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>
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
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.
43 #include <linux/module.h>
44 #include <linux/delay.h>
45 #include <linux/hardirq.h>
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>
54 #include <net/ieee80211_radiotap.h>
56 #include <asm/unaligned.h>
62 static int ath5k_calinterval = 10; /* Calibrate PHY every 10 secs (TODO: Fixme) */
63 static int modparam_nohwcrypt;
64 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
65 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
67 static int modparam_all_channels;
68 module_param_named(all_channels, modparam_all_channels, bool, S_IRUGO);
69 MODULE_PARM_DESC(all_channels, "Expose all channels the device can use.");
77 MODULE_AUTHOR("Jiri Slaby");
78 MODULE_AUTHOR("Nick Kossifidis");
79 MODULE_DESCRIPTION("Support for 5xxx series of Atheros 802.11 wireless LAN cards.");
80 MODULE_SUPPORTED_DEVICE("Atheros 5xxx WLAN cards");
81 MODULE_LICENSE("Dual BSD/GPL");
82 MODULE_VERSION("0.6.0 (EXPERIMENTAL)");
86 static const struct pci_device_id ath5k_pci_id_table[] = {
87 { PCI_VDEVICE(ATHEROS, 0x0207), .driver_data = AR5K_AR5210 }, /* 5210 early */
88 { PCI_VDEVICE(ATHEROS, 0x0007), .driver_data = AR5K_AR5210 }, /* 5210 */
89 { PCI_VDEVICE(ATHEROS, 0x0011), .driver_data = AR5K_AR5211 }, /* 5311 - this is on AHB bus !*/
90 { PCI_VDEVICE(ATHEROS, 0x0012), .driver_data = AR5K_AR5211 }, /* 5211 */
91 { PCI_VDEVICE(ATHEROS, 0x0013), .driver_data = AR5K_AR5212 }, /* 5212 */
92 { PCI_VDEVICE(3COM_2, 0x0013), .driver_data = AR5K_AR5212 }, /* 3com 5212 */
93 { PCI_VDEVICE(3COM, 0x0013), .driver_data = AR5K_AR5212 }, /* 3com 3CRDAG675 5212 */
94 { PCI_VDEVICE(ATHEROS, 0x1014), .driver_data = AR5K_AR5212 }, /* IBM minipci 5212 */
95 { PCI_VDEVICE(ATHEROS, 0x0014), .driver_data = AR5K_AR5212 }, /* 5212 combatible */
96 { PCI_VDEVICE(ATHEROS, 0x0015), .driver_data = AR5K_AR5212 }, /* 5212 combatible */
97 { PCI_VDEVICE(ATHEROS, 0x0016), .driver_data = AR5K_AR5212 }, /* 5212 combatible */
98 { PCI_VDEVICE(ATHEROS, 0x0017), .driver_data = AR5K_AR5212 }, /* 5212 combatible */
99 { PCI_VDEVICE(ATHEROS, 0x0018), .driver_data = AR5K_AR5212 }, /* 5212 combatible */
100 { PCI_VDEVICE(ATHEROS, 0x0019), .driver_data = AR5K_AR5212 }, /* 5212 combatible */
101 { PCI_VDEVICE(ATHEROS, 0x001a), .driver_data = AR5K_AR5212 }, /* 2413 Griffin-lite */
102 { PCI_VDEVICE(ATHEROS, 0x001b), .driver_data = AR5K_AR5212 }, /* 5413 Eagle */
103 { PCI_VDEVICE(ATHEROS, 0x001c), .driver_data = AR5K_AR5212 }, /* PCI-E cards */
104 { PCI_VDEVICE(ATHEROS, 0x001d), .driver_data = AR5K_AR5212 }, /* 2417 Nala */
107 MODULE_DEVICE_TABLE(pci, ath5k_pci_id_table);
110 static const struct ath5k_srev_name srev_names[] = {
111 { "5210", AR5K_VERSION_MAC, AR5K_SREV_AR5210 },
112 { "5311", AR5K_VERSION_MAC, AR5K_SREV_AR5311 },
113 { "5311A", AR5K_VERSION_MAC, AR5K_SREV_AR5311A },
114 { "5311B", AR5K_VERSION_MAC, AR5K_SREV_AR5311B },
115 { "5211", AR5K_VERSION_MAC, AR5K_SREV_AR5211 },
116 { "5212", AR5K_VERSION_MAC, AR5K_SREV_AR5212 },
117 { "5213", AR5K_VERSION_MAC, AR5K_SREV_AR5213 },
118 { "5213A", AR5K_VERSION_MAC, AR5K_SREV_AR5213A },
119 { "2413", AR5K_VERSION_MAC, AR5K_SREV_AR2413 },
120 { "2414", AR5K_VERSION_MAC, AR5K_SREV_AR2414 },
121 { "5424", AR5K_VERSION_MAC, AR5K_SREV_AR5424 },
122 { "5413", AR5K_VERSION_MAC, AR5K_SREV_AR5413 },
123 { "5414", AR5K_VERSION_MAC, AR5K_SREV_AR5414 },
124 { "2415", AR5K_VERSION_MAC, AR5K_SREV_AR2415 },
125 { "5416", AR5K_VERSION_MAC, AR5K_SREV_AR5416 },
126 { "5418", AR5K_VERSION_MAC, AR5K_SREV_AR5418 },
127 { "2425", AR5K_VERSION_MAC, AR5K_SREV_AR2425 },
128 { "2417", AR5K_VERSION_MAC, AR5K_SREV_AR2417 },
129 { "xxxxx", AR5K_VERSION_MAC, AR5K_SREV_UNKNOWN },
130 { "5110", AR5K_VERSION_RAD, AR5K_SREV_RAD_5110 },
131 { "5111", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111 },
132 { "5111A", AR5K_VERSION_RAD, AR5K_SREV_RAD_5111A },
133 { "2111", AR5K_VERSION_RAD, AR5K_SREV_RAD_2111 },
134 { "5112", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112 },
135 { "5112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112A },
136 { "5112B", AR5K_VERSION_RAD, AR5K_SREV_RAD_5112B },
137 { "2112", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112 },
138 { "2112A", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112A },
139 { "2112B", AR5K_VERSION_RAD, AR5K_SREV_RAD_2112B },
140 { "2413", AR5K_VERSION_RAD, AR5K_SREV_RAD_2413 },
141 { "5413", AR5K_VERSION_RAD, AR5K_SREV_RAD_5413 },
142 { "2316", AR5K_VERSION_RAD, AR5K_SREV_RAD_2316 },
143 { "2317", AR5K_VERSION_RAD, AR5K_SREV_RAD_2317 },
144 { "5424", AR5K_VERSION_RAD, AR5K_SREV_RAD_5424 },
145 { "5133", AR5K_VERSION_RAD, AR5K_SREV_RAD_5133 },
146 { "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN },
149 static const struct ieee80211_rate ath5k_rates[] = {
151 .hw_value = ATH5K_RATE_CODE_1M, },
153 .hw_value = ATH5K_RATE_CODE_2M,
154 .hw_value_short = ATH5K_RATE_CODE_2M | AR5K_SET_SHORT_PREAMBLE,
155 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
157 .hw_value = ATH5K_RATE_CODE_5_5M,
158 .hw_value_short = ATH5K_RATE_CODE_5_5M | AR5K_SET_SHORT_PREAMBLE,
159 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
161 .hw_value = ATH5K_RATE_CODE_11M,
162 .hw_value_short = ATH5K_RATE_CODE_11M | AR5K_SET_SHORT_PREAMBLE,
163 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
165 .hw_value = ATH5K_RATE_CODE_6M,
168 .hw_value = ATH5K_RATE_CODE_9M,
171 .hw_value = ATH5K_RATE_CODE_12M,
174 .hw_value = ATH5K_RATE_CODE_18M,
177 .hw_value = ATH5K_RATE_CODE_24M,
180 .hw_value = ATH5K_RATE_CODE_36M,
183 .hw_value = ATH5K_RATE_CODE_48M,
186 .hw_value = ATH5K_RATE_CODE_54M,
192 * Prototypes - PCI stack related functions
194 static int __devinit ath5k_pci_probe(struct pci_dev *pdev,
195 const struct pci_device_id *id);
196 static void __devexit ath5k_pci_remove(struct pci_dev *pdev);
198 static int ath5k_pci_suspend(struct pci_dev *pdev,
200 static int ath5k_pci_resume(struct pci_dev *pdev);
202 #define ath5k_pci_suspend NULL
203 #define ath5k_pci_resume NULL
204 #endif /* CONFIG_PM */
206 static struct pci_driver ath5k_pci_driver = {
207 .name = KBUILD_MODNAME,
208 .id_table = ath5k_pci_id_table,
209 .probe = ath5k_pci_probe,
210 .remove = __devexit_p(ath5k_pci_remove),
211 .suspend = ath5k_pci_suspend,
212 .resume = ath5k_pci_resume,
218 * Prototypes - MAC 802.11 stack related functions
220 static int ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
221 static int ath5k_reset(struct ath5k_softc *sc, bool stop, bool change_channel);
222 static int ath5k_reset_wake(struct ath5k_softc *sc);
223 static int ath5k_start(struct ieee80211_hw *hw);
224 static void ath5k_stop(struct ieee80211_hw *hw);
225 static int ath5k_add_interface(struct ieee80211_hw *hw,
226 struct ieee80211_if_init_conf *conf);
227 static void ath5k_remove_interface(struct ieee80211_hw *hw,
228 struct ieee80211_if_init_conf *conf);
229 static int ath5k_config(struct ieee80211_hw *hw, u32 changed);
230 static void ath5k_configure_filter(struct ieee80211_hw *hw,
231 unsigned int changed_flags,
232 unsigned int *new_flags,
233 int mc_count, struct dev_mc_list *mclist);
234 static int ath5k_set_key(struct ieee80211_hw *hw,
235 enum set_key_cmd cmd,
236 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
237 struct ieee80211_key_conf *key);
238 static int ath5k_get_stats(struct ieee80211_hw *hw,
239 struct ieee80211_low_level_stats *stats);
240 static int ath5k_get_tx_stats(struct ieee80211_hw *hw,
241 struct ieee80211_tx_queue_stats *stats);
242 static u64 ath5k_get_tsf(struct ieee80211_hw *hw);
243 static void ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf);
244 static void ath5k_reset_tsf(struct ieee80211_hw *hw);
245 static int ath5k_beacon_update(struct ath5k_softc *sc,
246 struct sk_buff *skb);
247 static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
248 struct ieee80211_vif *vif,
249 struct ieee80211_bss_conf *bss_conf,
252 static const struct ieee80211_ops ath5k_hw_ops = {
254 .start = ath5k_start,
256 .add_interface = ath5k_add_interface,
257 .remove_interface = ath5k_remove_interface,
258 .config = ath5k_config,
259 .configure_filter = ath5k_configure_filter,
260 .set_key = ath5k_set_key,
261 .get_stats = ath5k_get_stats,
263 .get_tx_stats = ath5k_get_tx_stats,
264 .get_tsf = ath5k_get_tsf,
265 .set_tsf = ath5k_set_tsf,
266 .reset_tsf = ath5k_reset_tsf,
267 .bss_info_changed = ath5k_bss_info_changed,
271 * Prototypes - Internal functions
274 static int ath5k_attach(struct pci_dev *pdev,
275 struct ieee80211_hw *hw);
276 static void ath5k_detach(struct pci_dev *pdev,
277 struct ieee80211_hw *hw);
278 /* Channel/mode setup */
279 static inline short ath5k_ieee2mhz(short chan);
280 static unsigned int ath5k_copy_channels(struct ath5k_hw *ah,
281 struct ieee80211_channel *channels,
284 static int ath5k_setup_bands(struct ieee80211_hw *hw);
285 static int ath5k_chan_set(struct ath5k_softc *sc,
286 struct ieee80211_channel *chan);
287 static void ath5k_setcurmode(struct ath5k_softc *sc,
289 static void ath5k_mode_setup(struct ath5k_softc *sc);
291 /* Descriptor setup */
292 static int ath5k_desc_alloc(struct ath5k_softc *sc,
293 struct pci_dev *pdev);
294 static void ath5k_desc_free(struct ath5k_softc *sc,
295 struct pci_dev *pdev);
297 static int ath5k_rxbuf_setup(struct ath5k_softc *sc,
298 struct ath5k_buf *bf);
299 static int ath5k_txbuf_setup(struct ath5k_softc *sc,
300 struct ath5k_buf *bf);
301 static inline void ath5k_txbuf_free(struct ath5k_softc *sc,
302 struct ath5k_buf *bf)
307 pci_unmap_single(sc->pdev, bf->skbaddr, bf->skb->len,
309 dev_kfree_skb_any(bf->skb);
313 static inline void ath5k_rxbuf_free(struct ath5k_softc *sc,
314 struct ath5k_buf *bf)
319 pci_unmap_single(sc->pdev, bf->skbaddr, sc->rxbufsize,
321 dev_kfree_skb_any(bf->skb);
327 static struct ath5k_txq *ath5k_txq_setup(struct ath5k_softc *sc,
328 int qtype, int subtype);
329 static int ath5k_beaconq_setup(struct ath5k_hw *ah);
330 static int ath5k_beaconq_config(struct ath5k_softc *sc);
331 static void ath5k_txq_drainq(struct ath5k_softc *sc,
332 struct ath5k_txq *txq);
333 static void ath5k_txq_cleanup(struct ath5k_softc *sc);
334 static void ath5k_txq_release(struct ath5k_softc *sc);
336 static int ath5k_rx_start(struct ath5k_softc *sc);
337 static void ath5k_rx_stop(struct ath5k_softc *sc);
338 static unsigned int ath5k_rx_decrypted(struct ath5k_softc *sc,
339 struct ath5k_desc *ds,
341 struct ath5k_rx_status *rs);
342 static void ath5k_tasklet_rx(unsigned long data);
344 static void ath5k_tx_processq(struct ath5k_softc *sc,
345 struct ath5k_txq *txq);
346 static void ath5k_tasklet_tx(unsigned long data);
347 /* Beacon handling */
348 static int ath5k_beacon_setup(struct ath5k_softc *sc,
349 struct ath5k_buf *bf);
350 static void ath5k_beacon_send(struct ath5k_softc *sc);
351 static void ath5k_beacon_config(struct ath5k_softc *sc);
352 static void ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf);
353 static void ath5k_tasklet_beacon(unsigned long data);
355 static inline u64 ath5k_extend_tsf(struct ath5k_hw *ah, u32 rstamp)
357 u64 tsf = ath5k_hw_get_tsf64(ah);
359 if ((tsf & 0x7fff) < rstamp)
362 return (tsf & ~0x7fff) | rstamp;
365 /* Interrupt handling */
366 static int ath5k_init(struct ath5k_softc *sc);
367 static int ath5k_stop_locked(struct ath5k_softc *sc);
368 static int ath5k_stop_hw(struct ath5k_softc *sc);
369 static irqreturn_t ath5k_intr(int irq, void *dev_id);
370 static void ath5k_tasklet_reset(unsigned long data);
372 static void ath5k_calibrate(unsigned long data);
375 * Module init/exit functions
384 ret = pci_register_driver(&ath5k_pci_driver);
386 printk(KERN_ERR "ath5k_pci: can't register pci driver\n");
396 pci_unregister_driver(&ath5k_pci_driver);
398 ath5k_debug_finish();
401 module_init(init_ath5k_pci);
402 module_exit(exit_ath5k_pci);
405 /********************\
406 * PCI Initialization *
407 \********************/
410 ath5k_chip_name(enum ath5k_srev_type type, u_int16_t val)
412 const char *name = "xxxxx";
415 for (i = 0; i < ARRAY_SIZE(srev_names); i++) {
416 if (srev_names[i].sr_type != type)
419 if ((val & 0xf0) == srev_names[i].sr_val)
420 name = srev_names[i].sr_name;
422 if ((val & 0xff) == srev_names[i].sr_val) {
423 name = srev_names[i].sr_name;
432 ath5k_pci_probe(struct pci_dev *pdev,
433 const struct pci_device_id *id)
436 struct ath5k_softc *sc;
437 struct ieee80211_hw *hw;
441 ret = pci_enable_device(pdev);
443 dev_err(&pdev->dev, "can't enable device\n");
447 /* XXX 32-bit addressing only */
448 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
450 dev_err(&pdev->dev, "32-bit DMA not available\n");
455 * Cache line size is used to size and align various
456 * structures used to communicate with the hardware.
458 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz);
461 * Linux 2.4.18 (at least) writes the cache line size
462 * register as a 16-bit wide register which is wrong.
463 * We must have this setup properly for rx buffer
464 * DMA to work so force a reasonable value here if it
467 csz = L1_CACHE_BYTES / sizeof(u32);
468 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz);
471 * The default setting of latency timer yields poor results,
472 * set it to the value used by other systems. It may be worth
473 * tweaking this setting more.
475 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8);
477 /* Enable bus mastering */
478 pci_set_master(pdev);
481 * Disable the RETRY_TIMEOUT register (0x41) to keep
482 * PCI Tx retries from interfering with C3 CPU state.
484 pci_write_config_byte(pdev, 0x41, 0);
486 ret = pci_request_region(pdev, 0, "ath5k");
488 dev_err(&pdev->dev, "cannot reserve PCI memory region\n");
492 mem = pci_iomap(pdev, 0, 0);
494 dev_err(&pdev->dev, "cannot remap PCI memory region\n") ;
500 * Allocate hw (mac80211 main struct)
501 * and hw->priv (driver private data)
503 hw = ieee80211_alloc_hw(sizeof(*sc), &ath5k_hw_ops);
505 dev_err(&pdev->dev, "cannot allocate ieee80211_hw\n");
510 dev_info(&pdev->dev, "registered as '%s'\n", wiphy_name(hw->wiphy));
512 /* Initialize driver private data */
513 SET_IEEE80211_DEV(hw, &pdev->dev);
514 hw->flags = IEEE80211_HW_RX_INCLUDES_FCS |
515 IEEE80211_HW_SIGNAL_DBM |
516 IEEE80211_HW_NOISE_DBM;
518 hw->wiphy->interface_modes =
519 BIT(NL80211_IFTYPE_AP) |
520 BIT(NL80211_IFTYPE_STATION) |
521 BIT(NL80211_IFTYPE_ADHOC) |
522 BIT(NL80211_IFTYPE_MESH_POINT);
524 hw->extra_tx_headroom = 2;
525 hw->channel_change_time = 5000;
530 ath5k_debug_init_device(sc);
533 * Mark the device as detached to avoid processing
534 * interrupts until setup is complete.
536 __set_bit(ATH_STAT_INVALID, sc->status);
538 sc->iobase = mem; /* So we can unmap it on detach */
539 sc->cachelsz = csz * sizeof(u32); /* convert to bytes */
540 sc->opmode = NL80211_IFTYPE_STATION;
541 mutex_init(&sc->lock);
542 spin_lock_init(&sc->rxbuflock);
543 spin_lock_init(&sc->txbuflock);
544 spin_lock_init(&sc->block);
546 /* Set private data */
547 pci_set_drvdata(pdev, hw);
549 /* Setup interrupt handler */
550 ret = request_irq(pdev->irq, ath5k_intr, IRQF_SHARED, "ath", sc);
552 ATH5K_ERR(sc, "request_irq failed\n");
556 /* Initialize device */
557 sc->ah = ath5k_hw_attach(sc, id->driver_data);
558 if (IS_ERR(sc->ah)) {
559 ret = PTR_ERR(sc->ah);
563 /* set up multi-rate retry capabilities */
564 if (sc->ah->ah_version == AR5K_AR5212) {
566 hw->max_rate_tries = 11;
569 /* Finish private driver data initialization */
570 ret = ath5k_attach(pdev, hw);
574 ATH5K_INFO(sc, "Atheros AR%s chip found (MAC: 0x%x, PHY: 0x%x)\n",
575 ath5k_chip_name(AR5K_VERSION_MAC, sc->ah->ah_mac_srev),
577 sc->ah->ah_phy_revision);
579 if (!sc->ah->ah_single_chip) {
580 /* Single chip radio (!RF5111) */
581 if (sc->ah->ah_radio_5ghz_revision &&
582 !sc->ah->ah_radio_2ghz_revision) {
583 /* No 5GHz support -> report 2GHz radio */
584 if (!test_bit(AR5K_MODE_11A,
585 sc->ah->ah_capabilities.cap_mode)) {
586 ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n",
587 ath5k_chip_name(AR5K_VERSION_RAD,
588 sc->ah->ah_radio_5ghz_revision),
589 sc->ah->ah_radio_5ghz_revision);
590 /* No 2GHz support (5110 and some
591 * 5Ghz only cards) -> report 5Ghz radio */
592 } else if (!test_bit(AR5K_MODE_11B,
593 sc->ah->ah_capabilities.cap_mode)) {
594 ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n",
595 ath5k_chip_name(AR5K_VERSION_RAD,
596 sc->ah->ah_radio_5ghz_revision),
597 sc->ah->ah_radio_5ghz_revision);
598 /* Multiband radio */
600 ATH5K_INFO(sc, "RF%s multiband radio found"
602 ath5k_chip_name(AR5K_VERSION_RAD,
603 sc->ah->ah_radio_5ghz_revision),
604 sc->ah->ah_radio_5ghz_revision);
607 /* Multi chip radio (RF5111 - RF2111) ->
608 * report both 2GHz/5GHz radios */
609 else if (sc->ah->ah_radio_5ghz_revision &&
610 sc->ah->ah_radio_2ghz_revision){
611 ATH5K_INFO(sc, "RF%s 5GHz radio found (0x%x)\n",
612 ath5k_chip_name(AR5K_VERSION_RAD,
613 sc->ah->ah_radio_5ghz_revision),
614 sc->ah->ah_radio_5ghz_revision);
615 ATH5K_INFO(sc, "RF%s 2GHz radio found (0x%x)\n",
616 ath5k_chip_name(AR5K_VERSION_RAD,
617 sc->ah->ah_radio_2ghz_revision),
618 sc->ah->ah_radio_2ghz_revision);
623 /* ready to process interrupts */
624 __clear_bit(ATH_STAT_INVALID, sc->status);
628 ath5k_hw_detach(sc->ah);
630 free_irq(pdev->irq, sc);
632 ieee80211_free_hw(hw);
634 pci_iounmap(pdev, mem);
636 pci_release_region(pdev, 0);
638 pci_disable_device(pdev);
643 static void __devexit
644 ath5k_pci_remove(struct pci_dev *pdev)
646 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
647 struct ath5k_softc *sc = hw->priv;
649 ath5k_debug_finish_device(sc);
650 ath5k_detach(pdev, hw);
651 ath5k_hw_detach(sc->ah);
652 free_irq(pdev->irq, sc);
653 pci_iounmap(pdev, sc->iobase);
654 pci_release_region(pdev, 0);
655 pci_disable_device(pdev);
656 ieee80211_free_hw(hw);
661 ath5k_pci_suspend(struct pci_dev *pdev, pm_message_t state)
663 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
664 struct ath5k_softc *sc = hw->priv;
668 free_irq(pdev->irq, sc);
669 pci_save_state(pdev);
670 pci_disable_device(pdev);
671 pci_set_power_state(pdev, PCI_D3hot);
677 ath5k_pci_resume(struct pci_dev *pdev)
679 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
680 struct ath5k_softc *sc = hw->priv;
683 pci_restore_state(pdev);
685 err = pci_enable_device(pdev);
689 err = request_irq(pdev->irq, ath5k_intr, IRQF_SHARED, "ath", sc);
691 ATH5K_ERR(sc, "request_irq failed\n");
695 ath5k_led_enable(sc);
699 pci_disable_device(pdev);
702 #endif /* CONFIG_PM */
705 /***********************\
706 * Driver Initialization *
707 \***********************/
709 static int ath5k_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
711 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
712 struct ath5k_softc *sc = hw->priv;
713 struct ath_regulatory *reg = &sc->ah->ah_regulatory;
715 return ath_reg_notifier_apply(wiphy, request, reg);
719 ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw)
721 struct ath5k_softc *sc = hw->priv;
722 struct ath5k_hw *ah = sc->ah;
723 u8 mac[ETH_ALEN] = {};
726 ATH5K_DBG(sc, ATH5K_DEBUG_ANY, "devid 0x%x\n", pdev->device);
729 * Check if the MAC has multi-rate retry support.
730 * We do this by trying to setup a fake extended
731 * descriptor. MAC's that don't have support will
732 * return false w/o doing anything. MAC's that do
733 * support it will return true w/o doing anything.
735 ret = ah->ah_setup_mrr_tx_desc(ah, NULL, 0, 0, 0, 0, 0, 0);
739 __set_bit(ATH_STAT_MRRETRY, sc->status);
742 * Collect the channel list. The 802.11 layer
743 * is resposible for filtering this list based
744 * on settings like the phy mode and regulatory
745 * domain restrictions.
747 ret = ath5k_setup_bands(hw);
749 ATH5K_ERR(sc, "can't get channels\n");
753 /* NB: setup here so ath5k_rate_update is happy */
754 if (test_bit(AR5K_MODE_11A, ah->ah_modes))
755 ath5k_setcurmode(sc, AR5K_MODE_11A);
757 ath5k_setcurmode(sc, AR5K_MODE_11B);
760 * Allocate tx+rx descriptors and populate the lists.
762 ret = ath5k_desc_alloc(sc, pdev);
764 ATH5K_ERR(sc, "can't allocate descriptors\n");
769 * Allocate hardware transmit queues: one queue for
770 * beacon frames and one data queue for each QoS
771 * priority. Note that hw functions handle reseting
772 * these queues at the needed time.
774 ret = ath5k_beaconq_setup(ah);
776 ATH5K_ERR(sc, "can't setup a beacon xmit queue\n");
781 sc->txq = ath5k_txq_setup(sc, AR5K_TX_QUEUE_DATA, AR5K_WME_AC_BK);
782 if (IS_ERR(sc->txq)) {
783 ATH5K_ERR(sc, "can't setup xmit queue\n");
784 ret = PTR_ERR(sc->txq);
788 tasklet_init(&sc->rxtq, ath5k_tasklet_rx, (unsigned long)sc);
789 tasklet_init(&sc->txtq, ath5k_tasklet_tx, (unsigned long)sc);
790 tasklet_init(&sc->restq, ath5k_tasklet_reset, (unsigned long)sc);
791 tasklet_init(&sc->beacontq, ath5k_tasklet_beacon, (unsigned long)sc);
792 setup_timer(&sc->calib_tim, ath5k_calibrate, (unsigned long)sc);
794 ret = ath5k_eeprom_read_mac(ah, mac);
796 ATH5K_ERR(sc, "unable to read address from EEPROM: 0x%04x\n",
801 SET_IEEE80211_PERM_ADDR(hw, mac);
802 /* All MAC address bits matter for ACKs */
803 memset(sc->bssidmask, 0xff, ETH_ALEN);
804 ath5k_hw_set_bssid_mask(sc->ah, sc->bssidmask);
806 ah->ah_regulatory.current_rd =
807 ah->ah_capabilities.cap_eeprom.ee_regdomain;
808 ret = ath_regd_init(&ah->ah_regulatory, hw->wiphy, ath5k_reg_notifier);
810 ATH5K_ERR(sc, "can't initialize regulatory system\n");
814 ret = ieee80211_register_hw(hw);
816 ATH5K_ERR(sc, "can't register ieee80211 hw\n");
820 if (!ath_is_world_regd(&sc->ah->ah_regulatory))
821 regulatory_hint(hw->wiphy, sc->ah->ah_regulatory.alpha2);
827 ath5k_txq_release(sc);
829 ath5k_hw_release_tx_queue(ah, sc->bhalq);
831 ath5k_desc_free(sc, pdev);
837 ath5k_detach(struct pci_dev *pdev, struct ieee80211_hw *hw)
839 struct ath5k_softc *sc = hw->priv;
842 * NB: the order of these is important:
843 * o call the 802.11 layer before detaching ath5k_hw to
844 * insure callbacks into the driver to delete global
845 * key cache entries can be handled
846 * o reclaim the tx queue data structures after calling
847 * the 802.11 layer as we'll get called back to reclaim
848 * node state and potentially want to use them
849 * o to cleanup the tx queues the hal is called, so detach
851 * XXX: ??? detach ath5k_hw ???
852 * Other than that, it's straightforward...
854 ieee80211_unregister_hw(hw);
855 ath5k_desc_free(sc, pdev);
856 ath5k_txq_release(sc);
857 ath5k_hw_release_tx_queue(sc->ah, sc->bhalq);
858 ath5k_unregister_leds(sc);
861 * NB: can't reclaim these until after ieee80211_ifdetach
862 * returns because we'll get called back to reclaim node
863 * state and potentially want to use them.
870 /********************\
871 * Channel/mode setup *
872 \********************/
875 * Convert IEEE channel number to MHz frequency.
878 ath5k_ieee2mhz(short chan)
880 if (chan <= 14 || chan >= 27)
881 return ieee80211chan2mhz(chan);
883 return 2212 + chan * 20;
887 * Returns true for the channel numbers used without all_channels modparam.
889 static bool ath5k_is_standard_channel(short chan)
891 return ((chan <= 14) ||
893 ((chan & 3) == 0 && chan >= 36 && chan <= 64) ||
895 ((chan & 3) == 0 && chan >= 100 && chan <= 140) ||
897 ((chan & 3) == 1 && chan >= 149 && chan <= 165));
901 ath5k_copy_channels(struct ath5k_hw *ah,
902 struct ieee80211_channel *channels,
906 unsigned int i, count, size, chfreq, freq, ch;
908 if (!test_bit(mode, ah->ah_modes))
913 case AR5K_MODE_11A_TURBO:
914 /* 1..220, but 2GHz frequencies are filtered by check_channel */
916 chfreq = CHANNEL_5GHZ;
920 case AR5K_MODE_11G_TURBO:
922 chfreq = CHANNEL_2GHZ;
925 ATH5K_WARN(ah->ah_sc, "bad mode, not copying channels\n");
929 for (i = 0, count = 0; i < size && max > 0; i++) {
931 freq = ath5k_ieee2mhz(ch);
933 /* Check if channel is supported by the chipset */
934 if (!ath5k_channel_ok(ah, freq, chfreq))
937 if (!modparam_all_channels && !ath5k_is_standard_channel(ch))
940 /* Write channel info and increment counter */
941 channels[count].center_freq = freq;
942 channels[count].band = (chfreq == CHANNEL_2GHZ) ?
943 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
947 channels[count].hw_value = chfreq | CHANNEL_OFDM;
949 case AR5K_MODE_11A_TURBO:
950 case AR5K_MODE_11G_TURBO:
951 channels[count].hw_value = chfreq |
952 CHANNEL_OFDM | CHANNEL_TURBO;
955 channels[count].hw_value = CHANNEL_B;
966 ath5k_setup_rate_idx(struct ath5k_softc *sc, struct ieee80211_supported_band *b)
970 for (i = 0; i < AR5K_MAX_RATES; i++)
971 sc->rate_idx[b->band][i] = -1;
973 for (i = 0; i < b->n_bitrates; i++) {
974 sc->rate_idx[b->band][b->bitrates[i].hw_value] = i;
975 if (b->bitrates[i].hw_value_short)
976 sc->rate_idx[b->band][b->bitrates[i].hw_value_short] = i;
981 ath5k_setup_bands(struct ieee80211_hw *hw)
983 struct ath5k_softc *sc = hw->priv;
984 struct ath5k_hw *ah = sc->ah;
985 struct ieee80211_supported_band *sband;
986 int max_c, count_c = 0;
989 BUILD_BUG_ON(ARRAY_SIZE(sc->sbands) < IEEE80211_NUM_BANDS);
990 max_c = ARRAY_SIZE(sc->channels);
993 sband = &sc->sbands[IEEE80211_BAND_2GHZ];
994 sband->band = IEEE80211_BAND_2GHZ;
995 sband->bitrates = &sc->rates[IEEE80211_BAND_2GHZ][0];
997 if (test_bit(AR5K_MODE_11G, sc->ah->ah_capabilities.cap_mode)) {
999 memcpy(sband->bitrates, &ath5k_rates[0],
1000 sizeof(struct ieee80211_rate) * 12);
1001 sband->n_bitrates = 12;
1003 sband->channels = sc->channels;
1004 sband->n_channels = ath5k_copy_channels(ah, sband->channels,
1005 AR5K_MODE_11G, max_c);
1007 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
1008 count_c = sband->n_channels;
1010 } else if (test_bit(AR5K_MODE_11B, sc->ah->ah_capabilities.cap_mode)) {
1012 memcpy(sband->bitrates, &ath5k_rates[0],
1013 sizeof(struct ieee80211_rate) * 4);
1014 sband->n_bitrates = 4;
1016 /* 5211 only supports B rates and uses 4bit rate codes
1017 * (e.g normally we have 0x1B for 1M, but on 5211 we have 0x0B)
1020 if (ah->ah_version == AR5K_AR5211) {
1021 for (i = 0; i < 4; i++) {
1022 sband->bitrates[i].hw_value =
1023 sband->bitrates[i].hw_value & 0xF;
1024 sband->bitrates[i].hw_value_short =
1025 sband->bitrates[i].hw_value_short & 0xF;
1029 sband->channels = sc->channels;
1030 sband->n_channels = ath5k_copy_channels(ah, sband->channels,
1031 AR5K_MODE_11B, max_c);
1033 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
1034 count_c = sband->n_channels;
1037 ath5k_setup_rate_idx(sc, sband);
1039 /* 5GHz band, A mode */
1040 if (test_bit(AR5K_MODE_11A, sc->ah->ah_capabilities.cap_mode)) {
1041 sband = &sc->sbands[IEEE80211_BAND_5GHZ];
1042 sband->band = IEEE80211_BAND_5GHZ;
1043 sband->bitrates = &sc->rates[IEEE80211_BAND_5GHZ][0];
1045 memcpy(sband->bitrates, &ath5k_rates[4],
1046 sizeof(struct ieee80211_rate) * 8);
1047 sband->n_bitrates = 8;
1049 sband->channels = &sc->channels[count_c];
1050 sband->n_channels = ath5k_copy_channels(ah, sband->channels,
1051 AR5K_MODE_11A, max_c);
1053 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
1055 ath5k_setup_rate_idx(sc, sband);
1057 ath5k_debug_dump_bands(sc);
1063 * Set/change channels. If the channel is really being changed,
1064 * it's done by reseting the chip. To accomplish this we must
1065 * first cleanup any pending DMA, then restart stuff after a la
1068 * Called with sc->lock.
1071 ath5k_chan_set(struct ath5k_softc *sc, struct ieee80211_channel *chan)
1073 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "(%u MHz) -> (%u MHz)\n",
1074 sc->curchan->center_freq, chan->center_freq);
1076 if (chan->center_freq != sc->curchan->center_freq ||
1077 chan->hw_value != sc->curchan->hw_value) {
1080 sc->curband = &sc->sbands[chan->band];
1083 * To switch channels clear any pending DMA operations;
1084 * wait long enough for the RX fifo to drain, reset the
1085 * hardware at the new frequency, and then re-enable
1086 * the relevant bits of the h/w.
1088 return ath5k_reset(sc, true, true);
1095 ath5k_setcurmode(struct ath5k_softc *sc, unsigned int mode)
1099 if (mode == AR5K_MODE_11A) {
1100 sc->curband = &sc->sbands[IEEE80211_BAND_5GHZ];
1102 sc->curband = &sc->sbands[IEEE80211_BAND_2GHZ];
1107 ath5k_mode_setup(struct ath5k_softc *sc)
1109 struct ath5k_hw *ah = sc->ah;
1112 /* configure rx filter */
1113 rfilt = sc->filter_flags;
1114 ath5k_hw_set_rx_filter(ah, rfilt);
1116 if (ath5k_hw_hasbssidmask(ah))
1117 ath5k_hw_set_bssid_mask(ah, sc->bssidmask);
1119 /* configure operational mode */
1120 ath5k_hw_set_opmode(ah);
1122 ath5k_hw_set_mcast_filter(ah, 0, 0);
1123 ATH5K_DBG(sc, ATH5K_DEBUG_MODE, "RX filter 0x%x\n", rfilt);
1127 ath5k_hw_to_driver_rix(struct ath5k_softc *sc, int hw_rix)
1131 /* return base rate on errors */
1132 if (WARN(hw_rix < 0 || hw_rix >= AR5K_MAX_RATES,
1133 "hw_rix out of bounds: %x\n", hw_rix))
1136 rix = sc->rate_idx[sc->curband->band][hw_rix];
1137 if (WARN(rix < 0, "invalid hw_rix: %x\n", hw_rix))
1148 struct sk_buff *ath5k_rx_skb_alloc(struct ath5k_softc *sc, dma_addr_t *skb_addr)
1150 struct sk_buff *skb;
1154 * Allocate buffer with headroom_needed space for the
1155 * fake physical layer header at the start.
1157 skb = dev_alloc_skb(sc->rxbufsize + sc->cachelsz - 1);
1160 ATH5K_ERR(sc, "can't alloc skbuff of size %u\n",
1161 sc->rxbufsize + sc->cachelsz - 1);
1165 * Cache-line-align. This is important (for the
1166 * 5210 at least) as not doing so causes bogus data
1169 off = ((unsigned long)skb->data) % sc->cachelsz;
1171 skb_reserve(skb, sc->cachelsz - off);
1173 *skb_addr = pci_map_single(sc->pdev,
1174 skb->data, sc->rxbufsize, PCI_DMA_FROMDEVICE);
1175 if (unlikely(pci_dma_mapping_error(sc->pdev, *skb_addr))) {
1176 ATH5K_ERR(sc, "%s: DMA mapping failed\n", __func__);
1184 ath5k_rxbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
1186 struct ath5k_hw *ah = sc->ah;
1187 struct sk_buff *skb = bf->skb;
1188 struct ath5k_desc *ds;
1191 skb = ath5k_rx_skb_alloc(sc, &bf->skbaddr);
1198 * Setup descriptors. For receive we always terminate
1199 * the descriptor list with a self-linked entry so we'll
1200 * not get overrun under high load (as can happen with a
1201 * 5212 when ANI processing enables PHY error frames).
1203 * To insure the last descriptor is self-linked we create
1204 * each descriptor as self-linked and add it to the end. As
1205 * each additional descriptor is added the previous self-linked
1206 * entry is ``fixed'' naturally. This should be safe even
1207 * if DMA is happening. When processing RX interrupts we
1208 * never remove/process the last, self-linked, entry on the
1209 * descriptor list. This insures the hardware always has
1210 * someplace to write a new frame.
1213 ds->ds_link = bf->daddr; /* link to self */
1214 ds->ds_data = bf->skbaddr;
1215 ah->ah_setup_rx_desc(ah, ds,
1216 skb_tailroom(skb), /* buffer size */
1219 if (sc->rxlink != NULL)
1220 *sc->rxlink = bf->daddr;
1221 sc->rxlink = &ds->ds_link;
1226 ath5k_txbuf_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
1228 struct ath5k_hw *ah = sc->ah;
1229 struct ath5k_txq *txq = sc->txq;
1230 struct ath5k_desc *ds = bf->desc;
1231 struct sk_buff *skb = bf->skb;
1232 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1233 unsigned int pktlen, flags, keyidx = AR5K_TXKEYIX_INVALID;
1234 struct ieee80211_rate *rate;
1235 unsigned int mrr_rate[3], mrr_tries[3];
1242 flags = AR5K_TXDESC_INTREQ | AR5K_TXDESC_CLRDMASK;
1244 /* XXX endianness */
1245 bf->skbaddr = pci_map_single(sc->pdev, skb->data, skb->len,
1248 rate = ieee80211_get_tx_rate(sc->hw, info);
1250 if (info->flags & IEEE80211_TX_CTL_NO_ACK)
1251 flags |= AR5K_TXDESC_NOACK;
1253 rc_flags = info->control.rates[0].flags;
1254 hw_rate = (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) ?
1255 rate->hw_value_short : rate->hw_value;
1259 /* FIXME: If we are in g mode and rate is a CCK rate
1260 * subtract ah->ah_txpower.txp_cck_ofdm_pwr_delta
1261 * from tx power (value is in dB units already) */
1262 if (info->control.hw_key) {
1263 keyidx = info->control.hw_key->hw_key_idx;
1264 pktlen += info->control.hw_key->icv_len;
1266 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
1267 flags |= AR5K_TXDESC_RTSENA;
1268 cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value;
1269 duration = le16_to_cpu(ieee80211_rts_duration(sc->hw,
1270 sc->vif, pktlen, info));
1272 if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
1273 flags |= AR5K_TXDESC_CTSENA;
1274 cts_rate = ieee80211_get_rts_cts_rate(sc->hw, info)->hw_value;
1275 duration = le16_to_cpu(ieee80211_ctstoself_duration(sc->hw,
1276 sc->vif, pktlen, info));
1278 ret = ah->ah_setup_tx_desc(ah, ds, pktlen,
1279 ieee80211_get_hdrlen_from_skb(skb), AR5K_PKT_TYPE_NORMAL,
1280 (sc->power_level * 2),
1282 info->control.rates[0].count, keyidx, ah->ah_tx_ant, flags,
1283 cts_rate, duration);
1287 memset(mrr_rate, 0, sizeof(mrr_rate));
1288 memset(mrr_tries, 0, sizeof(mrr_tries));
1289 for (i = 0; i < 3; i++) {
1290 rate = ieee80211_get_alt_retry_rate(sc->hw, info, i);
1294 mrr_rate[i] = rate->hw_value;
1295 mrr_tries[i] = info->control.rates[i + 1].count;
1298 ah->ah_setup_mrr_tx_desc(ah, ds,
1299 mrr_rate[0], mrr_tries[0],
1300 mrr_rate[1], mrr_tries[1],
1301 mrr_rate[2], mrr_tries[2]);
1304 ds->ds_data = bf->skbaddr;
1306 spin_lock_bh(&txq->lock);
1307 list_add_tail(&bf->list, &txq->q);
1308 sc->tx_stats[txq->qnum].len++;
1309 if (txq->link == NULL) /* is this first packet? */
1310 ath5k_hw_set_txdp(ah, txq->qnum, bf->daddr);
1311 else /* no, so only link it */
1312 *txq->link = bf->daddr;
1314 txq->link = &ds->ds_link;
1315 ath5k_hw_start_tx_dma(ah, txq->qnum);
1317 spin_unlock_bh(&txq->lock);
1321 pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, PCI_DMA_TODEVICE);
1325 /*******************\
1326 * Descriptors setup *
1327 \*******************/
1330 ath5k_desc_alloc(struct ath5k_softc *sc, struct pci_dev *pdev)
1332 struct ath5k_desc *ds;
1333 struct ath5k_buf *bf;
1338 /* allocate descriptors */
1339 sc->desc_len = sizeof(struct ath5k_desc) *
1340 (ATH_TXBUF + ATH_RXBUF + ATH_BCBUF + 1);
1341 sc->desc = pci_alloc_consistent(pdev, sc->desc_len, &sc->desc_daddr);
1342 if (sc->desc == NULL) {
1343 ATH5K_ERR(sc, "can't allocate descriptors\n");
1348 da = sc->desc_daddr;
1349 ATH5K_DBG(sc, ATH5K_DEBUG_ANY, "DMA map: %p (%zu) -> %llx\n",
1350 ds, sc->desc_len, (unsigned long long)sc->desc_daddr);
1352 bf = kcalloc(1 + ATH_TXBUF + ATH_RXBUF + ATH_BCBUF,
1353 sizeof(struct ath5k_buf), GFP_KERNEL);
1355 ATH5K_ERR(sc, "can't allocate bufptr\n");
1361 INIT_LIST_HEAD(&sc->rxbuf);
1362 for (i = 0; i < ATH_RXBUF; i++, bf++, ds++, da += sizeof(*ds)) {
1365 list_add_tail(&bf->list, &sc->rxbuf);
1368 INIT_LIST_HEAD(&sc->txbuf);
1369 sc->txbuf_len = ATH_TXBUF;
1370 for (i = 0; i < ATH_TXBUF; i++, bf++, ds++,
1371 da += sizeof(*ds)) {
1374 list_add_tail(&bf->list, &sc->txbuf);
1384 pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr);
1391 ath5k_desc_free(struct ath5k_softc *sc, struct pci_dev *pdev)
1393 struct ath5k_buf *bf;
1395 ath5k_txbuf_free(sc, sc->bbuf);
1396 list_for_each_entry(bf, &sc->txbuf, list)
1397 ath5k_txbuf_free(sc, bf);
1398 list_for_each_entry(bf, &sc->rxbuf, list)
1399 ath5k_rxbuf_free(sc, bf);
1401 /* Free memory associated with all descriptors */
1402 pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr);
1416 static struct ath5k_txq *
1417 ath5k_txq_setup(struct ath5k_softc *sc,
1418 int qtype, int subtype)
1420 struct ath5k_hw *ah = sc->ah;
1421 struct ath5k_txq *txq;
1422 struct ath5k_txq_info qi = {
1423 .tqi_subtype = subtype,
1424 .tqi_aifs = AR5K_TXQ_USEDEFAULT,
1425 .tqi_cw_min = AR5K_TXQ_USEDEFAULT,
1426 .tqi_cw_max = AR5K_TXQ_USEDEFAULT
1431 * Enable interrupts only for EOL and DESC conditions.
1432 * We mark tx descriptors to receive a DESC interrupt
1433 * when a tx queue gets deep; otherwise waiting for the
1434 * EOL to reap descriptors. Note that this is done to
1435 * reduce interrupt load and this only defers reaping
1436 * descriptors, never transmitting frames. Aside from
1437 * reducing interrupts this also permits more concurrency.
1438 * The only potential downside is if the tx queue backs
1439 * up in which case the top half of the kernel may backup
1440 * due to a lack of tx descriptors.
1442 qi.tqi_flags = AR5K_TXQ_FLAG_TXEOLINT_ENABLE |
1443 AR5K_TXQ_FLAG_TXDESCINT_ENABLE;
1444 qnum = ath5k_hw_setup_tx_queue(ah, qtype, &qi);
1447 * NB: don't print a message, this happens
1448 * normally on parts with too few tx queues
1450 return ERR_PTR(qnum);
1452 if (qnum >= ARRAY_SIZE(sc->txqs)) {
1453 ATH5K_ERR(sc, "hw qnum %u out of range, max %tu!\n",
1454 qnum, ARRAY_SIZE(sc->txqs));
1455 ath5k_hw_release_tx_queue(ah, qnum);
1456 return ERR_PTR(-EINVAL);
1458 txq = &sc->txqs[qnum];
1462 INIT_LIST_HEAD(&txq->q);
1463 spin_lock_init(&txq->lock);
1466 return &sc->txqs[qnum];
1470 ath5k_beaconq_setup(struct ath5k_hw *ah)
1472 struct ath5k_txq_info qi = {
1473 .tqi_aifs = AR5K_TXQ_USEDEFAULT,
1474 .tqi_cw_min = AR5K_TXQ_USEDEFAULT,
1475 .tqi_cw_max = AR5K_TXQ_USEDEFAULT,
1476 /* NB: for dynamic turbo, don't enable any other interrupts */
1477 .tqi_flags = AR5K_TXQ_FLAG_TXDESCINT_ENABLE
1480 return ath5k_hw_setup_tx_queue(ah, AR5K_TX_QUEUE_BEACON, &qi);
1484 ath5k_beaconq_config(struct ath5k_softc *sc)
1486 struct ath5k_hw *ah = sc->ah;
1487 struct ath5k_txq_info qi;
1490 ret = ath5k_hw_get_tx_queueprops(ah, sc->bhalq, &qi);
1493 if (sc->opmode == NL80211_IFTYPE_AP ||
1494 sc->opmode == NL80211_IFTYPE_MESH_POINT) {
1496 * Always burst out beacon and CAB traffic
1497 * (aifs = cwmin = cwmax = 0)
1502 } else if (sc->opmode == NL80211_IFTYPE_ADHOC) {
1504 * Adhoc mode; backoff between 0 and (2 * cw_min).
1508 qi.tqi_cw_max = 2 * ah->ah_cw_min;
1511 ATH5K_DBG(sc, ATH5K_DEBUG_BEACON,
1512 "beacon queueprops tqi_aifs:%d tqi_cw_min:%d tqi_cw_max:%d\n",
1513 qi.tqi_aifs, qi.tqi_cw_min, qi.tqi_cw_max);
1515 ret = ath5k_hw_set_tx_queueprops(ah, sc->bhalq, &qi);
1517 ATH5K_ERR(sc, "%s: unable to update parameters for beacon "
1518 "hardware queue!\n", __func__);
1522 return ath5k_hw_reset_tx_queue(ah, sc->bhalq); /* push to h/w */;
1526 ath5k_txq_drainq(struct ath5k_softc *sc, struct ath5k_txq *txq)
1528 struct ath5k_buf *bf, *bf0;
1531 * NB: this assumes output has been stopped and
1532 * we do not need to block ath5k_tx_tasklet
1534 spin_lock_bh(&txq->lock);
1535 list_for_each_entry_safe(bf, bf0, &txq->q, list) {
1536 ath5k_debug_printtxbuf(sc, bf);
1538 ath5k_txbuf_free(sc, bf);
1540 spin_lock_bh(&sc->txbuflock);
1541 sc->tx_stats[txq->qnum].len--;
1542 list_move_tail(&bf->list, &sc->txbuf);
1544 spin_unlock_bh(&sc->txbuflock);
1547 spin_unlock_bh(&txq->lock);
1551 * Drain the transmit queues and reclaim resources.
1554 ath5k_txq_cleanup(struct ath5k_softc *sc)
1556 struct ath5k_hw *ah = sc->ah;
1559 /* XXX return value */
1560 if (likely(!test_bit(ATH_STAT_INVALID, sc->status))) {
1561 /* don't touch the hardware if marked invalid */
1562 ath5k_hw_stop_tx_dma(ah, sc->bhalq);
1563 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "beacon queue %x\n",
1564 ath5k_hw_get_txdp(ah, sc->bhalq));
1565 for (i = 0; i < ARRAY_SIZE(sc->txqs); i++)
1566 if (sc->txqs[i].setup) {
1567 ath5k_hw_stop_tx_dma(ah, sc->txqs[i].qnum);
1568 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "txq [%u] %x, "
1571 ath5k_hw_get_txdp(ah,
1576 ieee80211_wake_queues(sc->hw); /* XXX move to callers */
1578 for (i = 0; i < ARRAY_SIZE(sc->txqs); i++)
1579 if (sc->txqs[i].setup)
1580 ath5k_txq_drainq(sc, &sc->txqs[i]);
1584 ath5k_txq_release(struct ath5k_softc *sc)
1586 struct ath5k_txq *txq = sc->txqs;
1589 for (i = 0; i < ARRAY_SIZE(sc->txqs); i++, txq++)
1591 ath5k_hw_release_tx_queue(sc->ah, txq->qnum);
1604 * Enable the receive h/w following a reset.
1607 ath5k_rx_start(struct ath5k_softc *sc)
1609 struct ath5k_hw *ah = sc->ah;
1610 struct ath5k_buf *bf;
1613 sc->rxbufsize = roundup(IEEE80211_MAX_LEN, sc->cachelsz);
1615 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "cachelsz %u rxbufsize %u\n",
1616 sc->cachelsz, sc->rxbufsize);
1618 spin_lock_bh(&sc->rxbuflock);
1620 list_for_each_entry(bf, &sc->rxbuf, list) {
1621 ret = ath5k_rxbuf_setup(sc, bf);
1623 spin_unlock_bh(&sc->rxbuflock);
1627 bf = list_first_entry(&sc->rxbuf, struct ath5k_buf, list);
1628 ath5k_hw_set_rxdp(ah, bf->daddr);
1629 spin_unlock_bh(&sc->rxbuflock);
1631 ath5k_hw_start_rx_dma(ah); /* enable recv descriptors */
1632 ath5k_mode_setup(sc); /* set filters, etc. */
1633 ath5k_hw_start_rx_pcu(ah); /* re-enable PCU/DMA engine */
1641 * Disable the receive h/w in preparation for a reset.
1644 ath5k_rx_stop(struct ath5k_softc *sc)
1646 struct ath5k_hw *ah = sc->ah;
1648 ath5k_hw_stop_rx_pcu(ah); /* disable PCU */
1649 ath5k_hw_set_rx_filter(ah, 0); /* clear recv filter */
1650 ath5k_hw_stop_rx_dma(ah); /* disable DMA engine */
1652 ath5k_debug_printrxbuffs(sc, ah);
1654 sc->rxlink = NULL; /* just in case */
1658 ath5k_rx_decrypted(struct ath5k_softc *sc, struct ath5k_desc *ds,
1659 struct sk_buff *skb, struct ath5k_rx_status *rs)
1661 struct ieee80211_hdr *hdr = (void *)skb->data;
1662 unsigned int keyix, hlen;
1664 if (!(rs->rs_status & AR5K_RXERR_DECRYPT) &&
1665 rs->rs_keyix != AR5K_RXKEYIX_INVALID)
1666 return RX_FLAG_DECRYPTED;
1668 /* Apparently when a default key is used to decrypt the packet
1669 the hw does not set the index used to decrypt. In such cases
1670 get the index from the packet. */
1671 hlen = ieee80211_hdrlen(hdr->frame_control);
1672 if (ieee80211_has_protected(hdr->frame_control) &&
1673 !(rs->rs_status & AR5K_RXERR_DECRYPT) &&
1674 skb->len >= hlen + 4) {
1675 keyix = skb->data[hlen + 3] >> 6;
1677 if (test_bit(keyix, sc->keymap))
1678 return RX_FLAG_DECRYPTED;
1686 ath5k_check_ibss_tsf(struct ath5k_softc *sc, struct sk_buff *skb,
1687 struct ieee80211_rx_status *rxs)
1691 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1693 if (ieee80211_is_beacon(mgmt->frame_control) &&
1694 le16_to_cpu(mgmt->u.beacon.capab_info) & WLAN_CAPABILITY_IBSS &&
1695 memcmp(mgmt->bssid, sc->ah->ah_bssid, ETH_ALEN) == 0) {
1697 * Received an IBSS beacon with the same BSSID. Hardware *must*
1698 * have updated the local TSF. We have to work around various
1699 * hardware bugs, though...
1701 tsf = ath5k_hw_get_tsf64(sc->ah);
1702 bc_tstamp = le64_to_cpu(mgmt->u.beacon.timestamp);
1703 hw_tu = TSF_TO_TU(tsf);
1705 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
1706 "beacon %llx mactime %llx (diff %lld) tsf now %llx\n",
1707 (unsigned long long)bc_tstamp,
1708 (unsigned long long)rxs->mactime,
1709 (unsigned long long)(rxs->mactime - bc_tstamp),
1710 (unsigned long long)tsf);
1713 * Sometimes the HW will give us a wrong tstamp in the rx
1714 * status, causing the timestamp extension to go wrong.
1715 * (This seems to happen especially with beacon frames bigger
1716 * than 78 byte (incl. FCS))
1717 * But we know that the receive timestamp must be later than the
1718 * timestamp of the beacon since HW must have synced to that.
1720 * NOTE: here we assume mactime to be after the frame was
1721 * received, not like mac80211 which defines it at the start.
1723 if (bc_tstamp > rxs->mactime) {
1724 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
1725 "fixing mactime from %llx to %llx\n",
1726 (unsigned long long)rxs->mactime,
1727 (unsigned long long)tsf);
1732 * Local TSF might have moved higher than our beacon timers,
1733 * in that case we have to update them to continue sending
1734 * beacons. This also takes care of synchronizing beacon sending
1735 * times with other stations.
1737 if (hw_tu >= sc->nexttbtt)
1738 ath5k_beacon_update_timers(sc, bc_tstamp);
1743 ath5k_tasklet_rx(unsigned long data)
1745 struct ieee80211_rx_status rxs = {};
1746 struct ath5k_rx_status rs = {};
1747 struct sk_buff *skb, *next_skb;
1748 dma_addr_t next_skb_addr;
1749 struct ath5k_softc *sc = (void *)data;
1750 struct ath5k_buf *bf;
1751 struct ath5k_desc *ds;
1756 spin_lock(&sc->rxbuflock);
1757 if (list_empty(&sc->rxbuf)) {
1758 ATH5K_WARN(sc, "empty rx buf pool\n");
1764 bf = list_first_entry(&sc->rxbuf, struct ath5k_buf, list);
1765 BUG_ON(bf->skb == NULL);
1769 /* bail if HW is still using self-linked descriptor */
1770 if (ath5k_hw_get_rxdp(sc->ah) == bf->daddr)
1773 ret = sc->ah->ah_proc_rx_desc(sc->ah, ds, &rs);
1774 if (unlikely(ret == -EINPROGRESS))
1776 else if (unlikely(ret)) {
1777 ATH5K_ERR(sc, "error in processing rx descriptor\n");
1778 spin_unlock(&sc->rxbuflock);
1782 if (unlikely(rs.rs_more)) {
1783 ATH5K_WARN(sc, "unsupported jumbo\n");
1787 if (unlikely(rs.rs_status)) {
1788 if (rs.rs_status & AR5K_RXERR_PHY)
1790 if (rs.rs_status & AR5K_RXERR_DECRYPT) {
1792 * Decrypt error. If the error occurred
1793 * because there was no hardware key, then
1794 * let the frame through so the upper layers
1795 * can process it. This is necessary for 5210
1796 * parts which have no way to setup a ``clear''
1799 * XXX do key cache faulting
1801 if (rs.rs_keyix == AR5K_RXKEYIX_INVALID &&
1802 !(rs.rs_status & AR5K_RXERR_CRC))
1805 if (rs.rs_status & AR5K_RXERR_MIC) {
1806 rxs.flag |= RX_FLAG_MMIC_ERROR;
1810 /* let crypto-error packets fall through in MNTR */
1812 ~(AR5K_RXERR_DECRYPT|AR5K_RXERR_MIC)) ||
1813 sc->opmode != NL80211_IFTYPE_MONITOR)
1817 next_skb = ath5k_rx_skb_alloc(sc, &next_skb_addr);
1820 * If we can't replace bf->skb with a new skb under memory
1821 * pressure, just skip this packet
1826 pci_unmap_single(sc->pdev, bf->skbaddr, sc->rxbufsize,
1827 PCI_DMA_FROMDEVICE);
1828 skb_put(skb, rs.rs_datalen);
1830 /* The MAC header is padded to have 32-bit boundary if the
1831 * packet payload is non-zero. The general calculation for
1832 * padsize would take into account odd header lengths:
1833 * padsize = (4 - hdrlen % 4) % 4; However, since only
1834 * even-length headers are used, padding can only be 0 or 2
1835 * bytes and we can optimize this a bit. In addition, we must
1836 * not try to remove padding from short control frames that do
1837 * not have payload. */
1838 hdrlen = ieee80211_get_hdrlen_from_skb(skb);
1839 padsize = ath5k_pad_size(hdrlen);
1841 memmove(skb->data + padsize, skb->data, hdrlen);
1842 skb_pull(skb, padsize);
1846 * always extend the mac timestamp, since this information is
1847 * also needed for proper IBSS merging.
1849 * XXX: it might be too late to do it here, since rs_tstamp is
1850 * 15bit only. that means TSF extension has to be done within
1851 * 32768usec (about 32ms). it might be necessary to move this to
1852 * the interrupt handler, like it is done in madwifi.
1854 * Unfortunately we don't know when the hardware takes the rx
1855 * timestamp (beginning of phy frame, data frame, end of rx?).
1856 * The only thing we know is that it is hardware specific...
1857 * On AR5213 it seems the rx timestamp is at the end of the
1858 * frame, but i'm not sure.
1860 * NOTE: mac80211 defines mactime at the beginning of the first
1861 * data symbol. Since we don't have any time references it's
1862 * impossible to comply to that. This affects IBSS merge only
1863 * right now, so it's not too bad...
1865 rxs.mactime = ath5k_extend_tsf(sc->ah, rs.rs_tstamp);
1866 rxs.flag |= RX_FLAG_TSFT;
1868 rxs.freq = sc->curchan->center_freq;
1869 rxs.band = sc->curband->band;
1871 rxs.noise = sc->ah->ah_noise_floor;
1872 rxs.signal = rxs.noise + rs.rs_rssi;
1874 /* An rssi of 35 indicates you should be able use
1875 * 54 Mbps reliably. A more elaborate scheme can be used
1876 * here but it requires a map of SNR/throughput for each
1877 * possible mode used */
1878 rxs.qual = rs.rs_rssi * 100 / 35;
1880 /* rssi can be more than 35 though, anything above that
1881 * should be considered at 100% */
1885 rxs.antenna = rs.rs_antenna;
1886 rxs.rate_idx = ath5k_hw_to_driver_rix(sc, rs.rs_rate);
1887 rxs.flag |= ath5k_rx_decrypted(sc, ds, skb, &rs);
1889 if (rxs.rate_idx >= 0 && rs.rs_rate ==
1890 sc->curband->bitrates[rxs.rate_idx].hw_value_short)
1891 rxs.flag |= RX_FLAG_SHORTPRE;
1893 ath5k_debug_dump_skb(sc, skb, "RX ", 0);
1895 /* check beacons in IBSS mode */
1896 if (sc->opmode == NL80211_IFTYPE_ADHOC)
1897 ath5k_check_ibss_tsf(sc, skb, &rxs);
1899 __ieee80211_rx(sc->hw, skb, &rxs);
1902 bf->skbaddr = next_skb_addr;
1904 list_move_tail(&bf->list, &sc->rxbuf);
1905 } while (ath5k_rxbuf_setup(sc, bf) == 0);
1907 spin_unlock(&sc->rxbuflock);
1918 ath5k_tx_processq(struct ath5k_softc *sc, struct ath5k_txq *txq)
1920 struct ath5k_tx_status ts = {};
1921 struct ath5k_buf *bf, *bf0;
1922 struct ath5k_desc *ds;
1923 struct sk_buff *skb;
1924 struct ieee80211_tx_info *info;
1927 spin_lock(&txq->lock);
1928 list_for_each_entry_safe(bf, bf0, &txq->q, list) {
1931 ret = sc->ah->ah_proc_tx_desc(sc->ah, ds, &ts);
1932 if (unlikely(ret == -EINPROGRESS))
1934 else if (unlikely(ret)) {
1935 ATH5K_ERR(sc, "error %d while processing queue %u\n",
1941 info = IEEE80211_SKB_CB(skb);
1944 pci_unmap_single(sc->pdev, bf->skbaddr, skb->len,
1947 ieee80211_tx_info_clear_status(info);
1948 for (i = 0; i < 4; i++) {
1949 struct ieee80211_tx_rate *r =
1950 &info->status.rates[i];
1952 if (ts.ts_rate[i]) {
1953 r->idx = ath5k_hw_to_driver_rix(sc, ts.ts_rate[i]);
1954 r->count = ts.ts_retry[i];
1961 /* count the successful attempt as well */
1962 info->status.rates[ts.ts_final_idx].count++;
1964 if (unlikely(ts.ts_status)) {
1965 sc->ll_stats.dot11ACKFailureCount++;
1966 if (ts.ts_status & AR5K_TXERR_FILT)
1967 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
1969 info->flags |= IEEE80211_TX_STAT_ACK;
1970 info->status.ack_signal = ts.ts_rssi;
1973 ieee80211_tx_status(sc->hw, skb);
1974 sc->tx_stats[txq->qnum].count++;
1976 spin_lock(&sc->txbuflock);
1977 sc->tx_stats[txq->qnum].len--;
1978 list_move_tail(&bf->list, &sc->txbuf);
1980 spin_unlock(&sc->txbuflock);
1982 if (likely(list_empty(&txq->q)))
1984 spin_unlock(&txq->lock);
1985 if (sc->txbuf_len > ATH_TXBUF / 5)
1986 ieee80211_wake_queues(sc->hw);
1990 ath5k_tasklet_tx(unsigned long data)
1992 struct ath5k_softc *sc = (void *)data;
1994 ath5k_tx_processq(sc, sc->txq);
2003 * Setup the beacon frame for transmit.
2006 ath5k_beacon_setup(struct ath5k_softc *sc, struct ath5k_buf *bf)
2008 struct sk_buff *skb = bf->skb;
2009 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2010 struct ath5k_hw *ah = sc->ah;
2011 struct ath5k_desc *ds;
2016 bf->skbaddr = pci_map_single(sc->pdev, skb->data, skb->len,
2018 ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "skb %p [data %p len %u] "
2019 "skbaddr %llx\n", skb, skb->data, skb->len,
2020 (unsigned long long)bf->skbaddr);
2021 if (pci_dma_mapping_error(sc->pdev, bf->skbaddr)) {
2022 ATH5K_ERR(sc, "beacon DMA mapping failed\n");
2027 antenna = ah->ah_tx_ant;
2029 flags = AR5K_TXDESC_NOACK;
2030 if (sc->opmode == NL80211_IFTYPE_ADHOC && ath5k_hw_hasveol(ah)) {
2031 ds->ds_link = bf->daddr; /* self-linked */
2032 flags |= AR5K_TXDESC_VEOL;
2037 * If we use multiple antennas on AP and use
2038 * the Sectored AP scenario, switch antenna every
2039 * 4 beacons to make sure everybody hears our AP.
2040 * When a client tries to associate, hw will keep
2041 * track of the tx antenna to be used for this client
2042 * automaticaly, based on ACKed packets.
2044 * Note: AP still listens and transmits RTS on the
2045 * default antenna which is supposed to be an omni.
2047 * Note2: On sectored scenarios it's possible to have
2048 * multiple antennas (1omni -the default- and 14 sectors)
2049 * so if we choose to actually support this mode we need
2050 * to allow user to set how many antennas we have and tweak
2051 * the code below to send beacons on all of them.
2053 if (ah->ah_ant_mode == AR5K_ANTMODE_SECTOR_AP)
2054 antenna = sc->bsent & 4 ? 2 : 1;
2057 /* FIXME: If we are in g mode and rate is a CCK rate
2058 * subtract ah->ah_txpower.txp_cck_ofdm_pwr_delta
2059 * from tx power (value is in dB units already) */
2060 ds->ds_data = bf->skbaddr;
2061 ret = ah->ah_setup_tx_desc(ah, ds, skb->len,
2062 ieee80211_get_hdrlen_from_skb(skb),
2063 AR5K_PKT_TYPE_BEACON, (sc->power_level * 2),
2064 ieee80211_get_tx_rate(sc->hw, info)->hw_value,
2065 1, AR5K_TXKEYIX_INVALID,
2066 antenna, flags, 0, 0);
2072 pci_unmap_single(sc->pdev, bf->skbaddr, skb->len, PCI_DMA_TODEVICE);
2077 * Transmit a beacon frame at SWBA. Dynamic updates to the
2078 * frame contents are done as needed and the slot time is
2079 * also adjusted based on current state.
2081 * This is called from software irq context (beacontq or restq
2082 * tasklets) or user context from ath5k_beacon_config.
2085 ath5k_beacon_send(struct ath5k_softc *sc)
2087 struct ath5k_buf *bf = sc->bbuf;
2088 struct ath5k_hw *ah = sc->ah;
2090 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, "in beacon_send\n");
2092 if (unlikely(bf->skb == NULL || sc->opmode == NL80211_IFTYPE_STATION ||
2093 sc->opmode == NL80211_IFTYPE_MONITOR)) {
2094 ATH5K_WARN(sc, "bf=%p bf_skb=%p\n", bf, bf ? bf->skb : NULL);
2098 * Check if the previous beacon has gone out. If
2099 * not don't don't try to post another, skip this
2100 * period and wait for the next. Missed beacons
2101 * indicate a problem and should not occur. If we
2102 * miss too many consecutive beacons reset the device.
2104 if (unlikely(ath5k_hw_num_tx_pending(ah, sc->bhalq) != 0)) {
2106 ATH5K_DBG(sc, ATH5K_DEBUG_BEACON,
2107 "missed %u consecutive beacons\n", sc->bmisscount);
2108 if (sc->bmisscount > 10) { /* NB: 10 is a guess */
2109 ATH5K_DBG(sc, ATH5K_DEBUG_BEACON,
2110 "stuck beacon time (%u missed)\n",
2112 tasklet_schedule(&sc->restq);
2116 if (unlikely(sc->bmisscount != 0)) {
2117 ATH5K_DBG(sc, ATH5K_DEBUG_BEACON,
2118 "resume beacon xmit after %u misses\n",
2124 * Stop any current dma and put the new frame on the queue.
2125 * This should never fail since we check above that no frames
2126 * are still pending on the queue.
2128 if (unlikely(ath5k_hw_stop_tx_dma(ah, sc->bhalq))) {
2129 ATH5K_WARN(sc, "beacon queue %u didn't start/stop ?\n", sc->bhalq);
2130 /* NB: hw still stops DMA, so proceed */
2133 /* Note: Beacon buffer is updated on beacon_update when mac80211
2134 * calls config_interface */
2135 ath5k_hw_set_txdp(ah, sc->bhalq, bf->daddr);
2136 ath5k_hw_start_tx_dma(ah, sc->bhalq);
2137 ATH5K_DBG(sc, ATH5K_DEBUG_BEACON, "TXDP[%u] = %llx (%p)\n",
2138 sc->bhalq, (unsigned long long)bf->daddr, bf->desc);
2145 * ath5k_beacon_update_timers - update beacon timers
2147 * @sc: struct ath5k_softc pointer we are operating on
2148 * @bc_tsf: the timestamp of the beacon. 0 to reset the TSF. -1 to perform a
2149 * beacon timer update based on the current HW TSF.
2151 * Calculate the next target beacon transmit time (TBTT) based on the timestamp
2152 * of a received beacon or the current local hardware TSF and write it to the
2153 * beacon timer registers.
2155 * This is called in a variety of situations, e.g. when a beacon is received,
2156 * when a TSF update has been detected, but also when an new IBSS is created or
2157 * when we otherwise know we have to update the timers, but we keep it in this
2158 * function to have it all together in one place.
2161 ath5k_beacon_update_timers(struct ath5k_softc *sc, u64 bc_tsf)
2163 struct ath5k_hw *ah = sc->ah;
2164 u32 nexttbtt, intval, hw_tu, bc_tu;
2167 intval = sc->bintval & AR5K_BEACON_PERIOD;
2168 if (WARN_ON(!intval))
2171 /* beacon TSF converted to TU */
2172 bc_tu = TSF_TO_TU(bc_tsf);
2174 /* current TSF converted to TU */
2175 hw_tsf = ath5k_hw_get_tsf64(ah);
2176 hw_tu = TSF_TO_TU(hw_tsf);
2179 /* we use FUDGE to make sure the next TBTT is ahead of the current TU */
2182 * no beacons received, called internally.
2183 * just need to refresh timers based on HW TSF.
2185 nexttbtt = roundup(hw_tu + FUDGE, intval);
2186 } else if (bc_tsf == 0) {
2188 * no beacon received, probably called by ath5k_reset_tsf().
2189 * reset TSF to start with 0.
2192 intval |= AR5K_BEACON_RESET_TSF;
2193 } else if (bc_tsf > hw_tsf) {
2195 * beacon received, SW merge happend but HW TSF not yet updated.
2196 * not possible to reconfigure timers yet, but next time we
2197 * receive a beacon with the same BSSID, the hardware will
2198 * automatically update the TSF and then we need to reconfigure
2201 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
2202 "need to wait for HW TSF sync\n");
2206 * most important case for beacon synchronization between STA.
2208 * beacon received and HW TSF has been already updated by HW.
2209 * update next TBTT based on the TSF of the beacon, but make
2210 * sure it is ahead of our local TSF timer.
2212 nexttbtt = bc_tu + roundup(hw_tu + FUDGE - bc_tu, intval);
2216 sc->nexttbtt = nexttbtt;
2218 intval |= AR5K_BEACON_ENA;
2219 ath5k_hw_init_beacon(ah, nexttbtt, intval);
2222 * debugging output last in order to preserve the time critical aspect
2226 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
2227 "reconfigured timers based on HW TSF\n");
2228 else if (bc_tsf == 0)
2229 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
2230 "reset HW TSF and timers\n");
2232 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
2233 "updated timers based on beacon TSF\n");
2235 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON,
2236 "bc_tsf %llx hw_tsf %llx bc_tu %u hw_tu %u nexttbtt %u\n",
2237 (unsigned long long) bc_tsf,
2238 (unsigned long long) hw_tsf, bc_tu, hw_tu, nexttbtt);
2239 ATH5K_DBG_UNLIMIT(sc, ATH5K_DEBUG_BEACON, "intval %u %s %s\n",
2240 intval & AR5K_BEACON_PERIOD,
2241 intval & AR5K_BEACON_ENA ? "AR5K_BEACON_ENA" : "",
2242 intval & AR5K_BEACON_RESET_TSF ? "AR5K_BEACON_RESET_TSF" : "");
2247 * ath5k_beacon_config - Configure the beacon queues and interrupts
2249 * @sc: struct ath5k_softc pointer we are operating on
2251 * In IBSS mode we use a self-linked tx descriptor if possible. We enable SWBA
2252 * interrupts to detect TSF updates only.
2255 ath5k_beacon_config(struct ath5k_softc *sc)
2257 struct ath5k_hw *ah = sc->ah;
2258 unsigned long flags;
2260 ath5k_hw_set_imr(ah, 0);
2262 sc->imask &= ~(AR5K_INT_BMISS | AR5K_INT_SWBA);
2264 if (sc->opmode == NL80211_IFTYPE_ADHOC ||
2265 sc->opmode == NL80211_IFTYPE_MESH_POINT ||
2266 sc->opmode == NL80211_IFTYPE_AP) {
2268 * In IBSS mode we use a self-linked tx descriptor and let the
2269 * hardware send the beacons automatically. We have to load it
2271 * We use the SWBA interrupt only to keep track of the beacon
2272 * timers in order to detect automatic TSF updates.
2274 ath5k_beaconq_config(sc);
2276 sc->imask |= AR5K_INT_SWBA;
2278 if (sc->opmode == NL80211_IFTYPE_ADHOC) {
2279 if (ath5k_hw_hasveol(ah)) {
2280 spin_lock_irqsave(&sc->block, flags);
2281 ath5k_beacon_send(sc);
2282 spin_unlock_irqrestore(&sc->block, flags);
2285 ath5k_beacon_update_timers(sc, -1);
2288 ath5k_hw_set_imr(ah, sc->imask);
2291 static void ath5k_tasklet_beacon(unsigned long data)
2293 struct ath5k_softc *sc = (struct ath5k_softc *) data;
2296 * Software beacon alert--time to send a beacon.
2298 * In IBSS mode we use this interrupt just to
2299 * keep track of the next TBTT (target beacon
2300 * transmission time) in order to detect wether
2301 * automatic TSF updates happened.
2303 if (sc->opmode == NL80211_IFTYPE_ADHOC) {
2304 /* XXX: only if VEOL suppported */
2305 u64 tsf = ath5k_hw_get_tsf64(sc->ah);
2306 sc->nexttbtt += sc->bintval;
2307 ATH5K_DBG(sc, ATH5K_DEBUG_BEACON,
2308 "SWBA nexttbtt: %x hw_tu: %x "
2312 (unsigned long long) tsf);
2314 spin_lock(&sc->block);
2315 ath5k_beacon_send(sc);
2316 spin_unlock(&sc->block);
2321 /********************\
2322 * Interrupt handling *
2323 \********************/
2326 ath5k_init(struct ath5k_softc *sc)
2328 struct ath5k_hw *ah = sc->ah;
2331 mutex_lock(&sc->lock);
2333 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "mode %d\n", sc->opmode);
2336 * Stop anything previously setup. This is safe
2337 * no matter this is the first time through or not.
2339 ath5k_stop_locked(sc);
2342 * The basic interface to setting the hardware in a good
2343 * state is ``reset''. On return the hardware is known to
2344 * be powered up and with interrupts disabled. This must
2345 * be followed by initialization of the appropriate bits
2346 * and then setup of the interrupt mask.
2348 sc->curchan = sc->hw->conf.channel;
2349 sc->curband = &sc->sbands[sc->curchan->band];
2350 sc->imask = AR5K_INT_RXOK | AR5K_INT_RXERR | AR5K_INT_RXEOL |
2351 AR5K_INT_RXORN | AR5K_INT_TXDESC | AR5K_INT_TXEOL |
2352 AR5K_INT_FATAL | AR5K_INT_GLOBAL;
2353 ret = ath5k_reset(sc, false, false);
2358 * Reset the key cache since some parts do not reset the
2359 * contents on initial power up or resume from suspend.
2361 for (i = 0; i < AR5K_KEYTABLE_SIZE; i++)
2362 ath5k_hw_reset_key(ah, i);
2364 /* Set ack to be sent at low bit-rates */
2365 ath5k_hw_set_ack_bitrate_high(ah, false);
2367 mod_timer(&sc->calib_tim, round_jiffies(jiffies +
2368 msecs_to_jiffies(ath5k_calinterval * 1000)));
2373 mutex_unlock(&sc->lock);
2378 ath5k_stop_locked(struct ath5k_softc *sc)
2380 struct ath5k_hw *ah = sc->ah;
2382 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "invalid %u\n",
2383 test_bit(ATH_STAT_INVALID, sc->status));
2386 * Shutdown the hardware and driver:
2387 * stop output from above
2388 * disable interrupts
2390 * turn off the radio
2391 * clear transmit machinery
2392 * clear receive machinery
2393 * drain and release tx queues
2394 * reclaim beacon resources
2395 * power down hardware
2397 * Note that some of this work is not possible if the
2398 * hardware is gone (invalid).
2400 ieee80211_stop_queues(sc->hw);
2402 if (!test_bit(ATH_STAT_INVALID, sc->status)) {
2404 ath5k_hw_set_imr(ah, 0);
2405 synchronize_irq(sc->pdev->irq);
2407 ath5k_txq_cleanup(sc);
2408 if (!test_bit(ATH_STAT_INVALID, sc->status)) {
2410 ath5k_hw_phy_disable(ah);
2418 * Stop the device, grabbing the top-level lock to protect
2419 * against concurrent entry through ath5k_init (which can happen
2420 * if another thread does a system call and the thread doing the
2421 * stop is preempted).
2424 ath5k_stop_hw(struct ath5k_softc *sc)
2428 mutex_lock(&sc->lock);
2429 ret = ath5k_stop_locked(sc);
2430 if (ret == 0 && !test_bit(ATH_STAT_INVALID, sc->status)) {
2432 * Set the chip in full sleep mode. Note that we are
2433 * careful to do this only when bringing the interface
2434 * completely to a stop. When the chip is in this state
2435 * it must be carefully woken up or references to
2436 * registers in the PCI clock domain may freeze the bus
2437 * (and system). This varies by chip and is mostly an
2438 * issue with newer parts that go to sleep more quickly.
2440 if (sc->ah->ah_mac_srev >= 0x78) {
2443 * don't put newer MAC revisions > 7.8 to sleep because
2444 * of the above mentioned problems
2446 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "mac version > 7.8, "
2447 "not putting device to sleep\n");
2449 ATH5K_DBG(sc, ATH5K_DEBUG_RESET,
2450 "putting device to full sleep\n");
2451 ath5k_hw_set_power(sc->ah, AR5K_PM_FULL_SLEEP, true, 0);
2454 ath5k_txbuf_free(sc, sc->bbuf);
2457 mutex_unlock(&sc->lock);
2459 del_timer_sync(&sc->calib_tim);
2460 tasklet_kill(&sc->rxtq);
2461 tasklet_kill(&sc->txtq);
2462 tasklet_kill(&sc->restq);
2463 tasklet_kill(&sc->beacontq);
2469 ath5k_intr(int irq, void *dev_id)
2471 struct ath5k_softc *sc = dev_id;
2472 struct ath5k_hw *ah = sc->ah;
2473 enum ath5k_int status;
2474 unsigned int counter = 1000;
2476 if (unlikely(test_bit(ATH_STAT_INVALID, sc->status) ||
2477 !ath5k_hw_is_intr_pending(ah)))
2481 ath5k_hw_get_isr(ah, &status); /* NB: clears IRQ too */
2482 ATH5K_DBG(sc, ATH5K_DEBUG_INTR, "status 0x%x/0x%x\n",
2484 if (unlikely(status & AR5K_INT_FATAL)) {
2486 * Fatal errors are unrecoverable.
2487 * Typically these are caused by DMA errors.
2489 tasklet_schedule(&sc->restq);
2490 } else if (unlikely(status & AR5K_INT_RXORN)) {
2491 tasklet_schedule(&sc->restq);
2493 if (status & AR5K_INT_SWBA) {
2494 tasklet_hi_schedule(&sc->beacontq);
2496 if (status & AR5K_INT_RXEOL) {
2498 * NB: the hardware should re-read the link when
2499 * RXE bit is written, but it doesn't work at
2500 * least on older hardware revs.
2504 if (status & AR5K_INT_TXURN) {
2505 /* bump tx trigger level */
2506 ath5k_hw_update_tx_triglevel(ah, true);
2508 if (status & (AR5K_INT_RXOK | AR5K_INT_RXERR))
2509 tasklet_schedule(&sc->rxtq);
2510 if (status & (AR5K_INT_TXOK | AR5K_INT_TXDESC
2511 | AR5K_INT_TXERR | AR5K_INT_TXEOL))
2512 tasklet_schedule(&sc->txtq);
2513 if (status & AR5K_INT_BMISS) {
2516 if (status & AR5K_INT_MIB) {
2518 * These stats are also used for ANI i think
2519 * so how about updating them more often ?
2521 ath5k_hw_update_mib_counters(ah, &sc->ll_stats);
2524 } while (ath5k_hw_is_intr_pending(ah) && --counter > 0);
2526 if (unlikely(!counter))
2527 ATH5K_WARN(sc, "too many interrupts, giving up for now\n");
2533 ath5k_tasklet_reset(unsigned long data)
2535 struct ath5k_softc *sc = (void *)data;
2537 ath5k_reset_wake(sc);
2541 * Periodically recalibrate the PHY to account
2542 * for temperature/environment changes.
2545 ath5k_calibrate(unsigned long data)
2547 struct ath5k_softc *sc = (void *)data;
2548 struct ath5k_hw *ah = sc->ah;
2550 ATH5K_DBG(sc, ATH5K_DEBUG_CALIBRATE, "channel %u/%x\n",
2551 ieee80211_frequency_to_channel(sc->curchan->center_freq),
2552 sc->curchan->hw_value);
2554 if (ath5k_hw_gainf_calibrate(ah) == AR5K_RFGAIN_NEED_CHANGE) {
2556 * Rfgain is out of bounds, reset the chip
2557 * to load new gain values.
2559 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "calibration, resetting\n");
2560 ath5k_reset_wake(sc);
2562 if (ath5k_hw_phy_calibrate(ah, sc->curchan))
2563 ATH5K_ERR(sc, "calibration of channel %u failed\n",
2564 ieee80211_frequency_to_channel(
2565 sc->curchan->center_freq));
2567 mod_timer(&sc->calib_tim, round_jiffies(jiffies +
2568 msecs_to_jiffies(ath5k_calinterval * 1000)));
2572 /********************\
2573 * Mac80211 functions *
2574 \********************/
2577 ath5k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2579 struct ath5k_softc *sc = hw->priv;
2580 struct ath5k_buf *bf;
2581 unsigned long flags;
2585 ath5k_debug_dump_skb(sc, skb, "TX ", 1);
2587 if (sc->opmode == NL80211_IFTYPE_MONITOR)
2588 ATH5K_DBG(sc, ATH5K_DEBUG_XMIT, "tx in monitor (scan?)\n");
2591 * the hardware expects the header padded to 4 byte boundaries
2592 * if this is not the case we add the padding after the header
2594 hdrlen = ieee80211_get_hdrlen_from_skb(skb);
2595 padsize = ath5k_pad_size(hdrlen);
2598 if (skb_headroom(skb) < padsize) {
2599 ATH5K_ERR(sc, "tx hdrlen not %%4: %d not enough"
2600 " headroom to pad %d\n", hdrlen, padsize);
2603 skb_push(skb, padsize);
2604 memmove(skb->data, skb->data+padsize, hdrlen);
2607 spin_lock_irqsave(&sc->txbuflock, flags);
2608 if (list_empty(&sc->txbuf)) {
2609 ATH5K_ERR(sc, "no further txbuf available, dropping packet\n");
2610 spin_unlock_irqrestore(&sc->txbuflock, flags);
2611 ieee80211_stop_queue(hw, skb_get_queue_mapping(skb));
2614 bf = list_first_entry(&sc->txbuf, struct ath5k_buf, list);
2615 list_del(&bf->list);
2617 if (list_empty(&sc->txbuf))
2618 ieee80211_stop_queues(hw);
2619 spin_unlock_irqrestore(&sc->txbuflock, flags);
2623 if (ath5k_txbuf_setup(sc, bf)) {
2625 spin_lock_irqsave(&sc->txbuflock, flags);
2626 list_add_tail(&bf->list, &sc->txbuf);
2628 spin_unlock_irqrestore(&sc->txbuflock, flags);
2631 return NETDEV_TX_OK;
2634 dev_kfree_skb_any(skb);
2635 return NETDEV_TX_OK;
2639 ath5k_reset(struct ath5k_softc *sc, bool stop, bool change_channel)
2641 struct ath5k_hw *ah = sc->ah;
2644 ATH5K_DBG(sc, ATH5K_DEBUG_RESET, "resetting\n");
2647 ath5k_hw_set_imr(ah, 0);
2648 ath5k_txq_cleanup(sc);
2651 ret = ath5k_hw_reset(ah, sc->opmode, sc->curchan, true);
2653 ATH5K_ERR(sc, "can't reset hardware (%d)\n", ret);
2657 ret = ath5k_rx_start(sc);
2659 ATH5K_ERR(sc, "can't start recv logic\n");
2664 * Change channels and update the h/w rate map if we're switching;
2665 * e.g. 11a to 11b/g.
2667 * We may be doing a reset in response to an ioctl that changes the
2668 * channel so update any state that might change as a result.
2672 /* ath5k_chan_change(sc, c); */
2674 ath5k_beacon_config(sc);
2675 /* intrs are enabled by ath5k_beacon_config */
2683 ath5k_reset_wake(struct ath5k_softc *sc)
2687 ret = ath5k_reset(sc, true, true);
2689 ieee80211_wake_queues(sc->hw);
2694 static int ath5k_start(struct ieee80211_hw *hw)
2696 return ath5k_init(hw->priv);
2699 static void ath5k_stop(struct ieee80211_hw *hw)
2701 ath5k_stop_hw(hw->priv);
2704 static int ath5k_add_interface(struct ieee80211_hw *hw,
2705 struct ieee80211_if_init_conf *conf)
2707 struct ath5k_softc *sc = hw->priv;
2710 mutex_lock(&sc->lock);
2716 sc->vif = conf->vif;
2718 switch (conf->type) {
2719 case NL80211_IFTYPE_AP:
2720 case NL80211_IFTYPE_STATION:
2721 case NL80211_IFTYPE_ADHOC:
2722 case NL80211_IFTYPE_MESH_POINT:
2723 case NL80211_IFTYPE_MONITOR:
2724 sc->opmode = conf->type;
2731 /* Set to a reasonable value. Note that this will
2732 * be set to mac80211's value at ath5k_config(). */
2734 ath5k_hw_set_lladdr(sc->ah, conf->mac_addr);
2738 mutex_unlock(&sc->lock);
2743 ath5k_remove_interface(struct ieee80211_hw *hw,
2744 struct ieee80211_if_init_conf *conf)
2746 struct ath5k_softc *sc = hw->priv;
2747 u8 mac[ETH_ALEN] = {};
2749 mutex_lock(&sc->lock);
2750 if (sc->vif != conf->vif)
2753 ath5k_hw_set_lladdr(sc->ah, mac);
2756 mutex_unlock(&sc->lock);
2760 * TODO: Phy disable/diversity etc
2763 ath5k_config(struct ieee80211_hw *hw, u32 changed)
2765 struct ath5k_softc *sc = hw->priv;
2766 struct ath5k_hw *ah = sc->ah;
2767 struct ieee80211_conf *conf = &hw->conf;
2770 mutex_lock(&sc->lock);
2772 sc->bintval = conf->beacon_int;
2774 ret = ath5k_chan_set(sc, conf->channel);
2778 if ((changed & IEEE80211_CONF_CHANGE_POWER) &&
2779 (sc->power_level != conf->power_level)) {
2780 sc->power_level = conf->power_level;
2783 ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2));
2787 * 1) Move this on config_interface and handle each case
2788 * separately eg. when we have only one STA vif, use
2789 * AR5K_ANTMODE_SINGLE_AP
2791 * 2) Allow the user to change antenna mode eg. when only
2792 * one antenna is present
2794 * 3) Allow the user to set default/tx antenna when possible
2796 * 4) Default mode should handle 90% of the cases, together
2797 * with fixed a/b and single AP modes we should be able to
2798 * handle 99%. Sectored modes are extreme cases and i still
2799 * haven't found a usage for them. If we decide to support them,
2800 * then we must allow the user to set how many tx antennas we
2803 ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT);
2805 mutex_unlock(&sc->lock);
2809 #define SUPPORTED_FIF_FLAGS \
2810 FIF_PROMISC_IN_BSS | FIF_ALLMULTI | FIF_FCSFAIL | \
2811 FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \
2812 FIF_BCN_PRBRESP_PROMISC
2814 * o always accept unicast, broadcast, and multicast traffic
2815 * o multicast traffic for all BSSIDs will be enabled if mac80211
2817 * o maintain current state of phy ofdm or phy cck error reception.
2818 * If the hardware detects any of these type of errors then
2819 * ath5k_hw_get_rx_filter() will pass to us the respective
2820 * hardware filters to be able to receive these type of frames.
2821 * o probe request frames are accepted only when operating in
2822 * hostap, adhoc, or monitor modes
2823 * o enable promiscuous mode according to the interface state
2825 * - when operating in adhoc mode so the 802.11 layer creates
2826 * node table entries for peers,
2827 * - when operating in station mode for collecting rssi data when
2828 * the station is otherwise quiet, or
2831 static void ath5k_configure_filter(struct ieee80211_hw *hw,
2832 unsigned int changed_flags,
2833 unsigned int *new_flags,
2834 int mc_count, struct dev_mc_list *mclist)
2836 struct ath5k_softc *sc = hw->priv;
2837 struct ath5k_hw *ah = sc->ah;
2838 u32 mfilt[2], val, rfilt;
2845 /* Only deal with supported flags */
2846 changed_flags &= SUPPORTED_FIF_FLAGS;
2847 *new_flags &= SUPPORTED_FIF_FLAGS;
2849 /* If HW detects any phy or radar errors, leave those filters on.
2850 * Also, always enable Unicast, Broadcasts and Multicast
2851 * XXX: move unicast, bssid broadcasts and multicast to mac80211 */
2852 rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) |
2853 (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST |
2854 AR5K_RX_FILTER_MCAST);
2856 if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
2857 if (*new_flags & FIF_PROMISC_IN_BSS) {
2858 rfilt |= AR5K_RX_FILTER_PROM;
2859 __set_bit(ATH_STAT_PROMISC, sc->status);
2861 __clear_bit(ATH_STAT_PROMISC, sc->status);
2865 /* Note, AR5K_RX_FILTER_MCAST is already enabled */
2866 if (*new_flags & FIF_ALLMULTI) {
2870 for (i = 0; i < mc_count; i++) {
2873 /* calculate XOR of eight 6-bit values */
2874 val = get_unaligned_le32(mclist->dmi_addr + 0);
2875 pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val;
2876 val = get_unaligned_le32(mclist->dmi_addr + 3);
2877 pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val;
2879 mfilt[pos / 32] |= (1 << (pos % 32));
2880 /* XXX: we might be able to just do this instead,
2881 * but not sure, needs testing, if we do use this we'd
2882 * neet to inform below to not reset the mcast */
2883 /* ath5k_hw_set_mcast_filterindex(ah,
2884 * mclist->dmi_addr[5]); */
2885 mclist = mclist->next;
2889 /* This is the best we can do */
2890 if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL))
2891 rfilt |= AR5K_RX_FILTER_PHYERR;
2893 /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons
2894 * and probes for any BSSID, this needs testing */
2895 if (*new_flags & FIF_BCN_PRBRESP_PROMISC)
2896 rfilt |= AR5K_RX_FILTER_BEACON | AR5K_RX_FILTER_PROBEREQ;
2898 /* FIF_CONTROL doc says that if FIF_PROMISC_IN_BSS is not
2899 * set we should only pass on control frames for this
2900 * station. This needs testing. I believe right now this
2901 * enables *all* control frames, which is OK.. but
2902 * but we should see if we can improve on granularity */
2903 if (*new_flags & FIF_CONTROL)
2904 rfilt |= AR5K_RX_FILTER_CONTROL;
2906 /* Additional settings per mode -- this is per ath5k */
2908 /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */
2910 if (sc->opmode == NL80211_IFTYPE_MONITOR)
2911 rfilt |= AR5K_RX_FILTER_CONTROL | AR5K_RX_FILTER_BEACON |
2912 AR5K_RX_FILTER_PROBEREQ | AR5K_RX_FILTER_PROM;
2913 if (sc->opmode != NL80211_IFTYPE_STATION)
2914 rfilt |= AR5K_RX_FILTER_PROBEREQ;
2915 if (sc->opmode != NL80211_IFTYPE_AP &&
2916 sc->opmode != NL80211_IFTYPE_MESH_POINT &&
2917 test_bit(ATH_STAT_PROMISC, sc->status))
2918 rfilt |= AR5K_RX_FILTER_PROM;
2919 if ((sc->opmode == NL80211_IFTYPE_STATION && sc->assoc) ||
2920 sc->opmode == NL80211_IFTYPE_ADHOC ||
2921 sc->opmode == NL80211_IFTYPE_AP)
2922 rfilt |= AR5K_RX_FILTER_BEACON;
2923 if (sc->opmode == NL80211_IFTYPE_MESH_POINT)
2924 rfilt |= AR5K_RX_FILTER_CONTROL | AR5K_RX_FILTER_BEACON |
2925 AR5K_RX_FILTER_PROBEREQ | AR5K_RX_FILTER_PROM;
2928 ath5k_hw_set_rx_filter(ah, rfilt);
2930 /* Set multicast bits */
2931 ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]);
2932 /* Set the cached hw filter flags, this will alter actually
2934 sc->filter_flags = rfilt;
2938 ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2939 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2940 struct ieee80211_key_conf *key)
2942 struct ath5k_softc *sc = hw->priv;
2945 if (modparam_nohwcrypt)
2959 mutex_lock(&sc->lock);
2963 ret = ath5k_hw_set_key(sc->ah, key->keyidx, key,
2964 sta ? sta->addr : NULL);
2966 ATH5K_ERR(sc, "can't set the key\n");
2969 __set_bit(key->keyidx, sc->keymap);
2970 key->hw_key_idx = key->keyidx;
2971 key->flags |= (IEEE80211_KEY_FLAG_GENERATE_IV |
2972 IEEE80211_KEY_FLAG_GENERATE_MMIC);
2975 ath5k_hw_reset_key(sc->ah, key->keyidx);
2976 __clear_bit(key->keyidx, sc->keymap);
2985 mutex_unlock(&sc->lock);
2990 ath5k_get_stats(struct ieee80211_hw *hw,
2991 struct ieee80211_low_level_stats *stats)
2993 struct ath5k_softc *sc = hw->priv;
2994 struct ath5k_hw *ah = sc->ah;
2997 ath5k_hw_update_mib_counters(ah, &sc->ll_stats);
2999 memcpy(stats, &sc->ll_stats, sizeof(sc->ll_stats));
3005 ath5k_get_tx_stats(struct ieee80211_hw *hw,
3006 struct ieee80211_tx_queue_stats *stats)
3008 struct ath5k_softc *sc = hw->priv;
3010 memcpy(stats, &sc->tx_stats, sizeof(sc->tx_stats));
3016 ath5k_get_tsf(struct ieee80211_hw *hw)
3018 struct ath5k_softc *sc = hw->priv;
3020 return ath5k_hw_get_tsf64(sc->ah);
3024 ath5k_set_tsf(struct ieee80211_hw *hw, u64 tsf)
3026 struct ath5k_softc *sc = hw->priv;
3028 ath5k_hw_set_tsf64(sc->ah, tsf);
3032 ath5k_reset_tsf(struct ieee80211_hw *hw)
3034 struct ath5k_softc *sc = hw->priv;
3037 * in IBSS mode we need to update the beacon timers too.
3038 * this will also reset the TSF if we call it with 0
3040 if (sc->opmode == NL80211_IFTYPE_ADHOC)
3041 ath5k_beacon_update_timers(sc, 0);
3043 ath5k_hw_reset_tsf(sc->ah);
3047 ath5k_beacon_update(struct ath5k_softc *sc, struct sk_buff *skb)
3049 unsigned long flags;
3052 ath5k_debug_dump_skb(sc, skb, "BC ", 1);
3054 spin_lock_irqsave(&sc->block, flags);
3055 ath5k_txbuf_free(sc, sc->bbuf);
3056 sc->bbuf->skb = skb;
3057 ret = ath5k_beacon_setup(sc, sc->bbuf);
3059 sc->bbuf->skb = NULL;
3060 spin_unlock_irqrestore(&sc->block, flags);
3062 ath5k_beacon_config(sc);
3069 set_beacon_filter(struct ieee80211_hw *hw, bool enable)
3071 struct ath5k_softc *sc = hw->priv;
3072 struct ath5k_hw *ah = sc->ah;
3074 rfilt = ath5k_hw_get_rx_filter(ah);
3076 rfilt |= AR5K_RX_FILTER_BEACON;
3078 rfilt &= ~AR5K_RX_FILTER_BEACON;
3079 ath5k_hw_set_rx_filter(ah, rfilt);
3080 sc->filter_flags = rfilt;
3083 static void ath5k_bss_info_changed(struct ieee80211_hw *hw,
3084 struct ieee80211_vif *vif,
3085 struct ieee80211_bss_conf *bss_conf,
3088 struct ath5k_softc *sc = hw->priv;
3089 struct ath5k_hw *ah = sc->ah;
3091 mutex_lock(&sc->lock);
3092 if (WARN_ON(sc->vif != vif))
3095 if (changes & BSS_CHANGED_BSSID) {
3096 /* Cache for later use during resets */
3097 memcpy(ah->ah_bssid, bss_conf->bssid, ETH_ALEN);
3098 /* XXX: assoc id is set to 0 for now, mac80211 doesn't have
3099 * a clean way of letting us retrieve this yet. */
3100 ath5k_hw_set_associd(ah, ah->ah_bssid, 0);
3104 if (changes & BSS_CHANGED_BEACON_INT)
3105 sc->bintval = bss_conf->beacon_int;
3107 if (changes & BSS_CHANGED_ASSOC) {
3108 sc->assoc = bss_conf->assoc;
3109 if (sc->opmode == NL80211_IFTYPE_STATION)
3110 set_beacon_filter(hw, sc->assoc);
3113 if (changes & BSS_CHANGED_BEACON &&
3114 (vif->type == NL80211_IFTYPE_ADHOC ||
3115 vif->type == NL80211_IFTYPE_MESH_POINT ||
3116 vif->type == NL80211_IFTYPE_AP)) {
3117 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
3120 ath5k_beacon_update(sc, beacon);
3124 mutex_unlock(&sc->lock);