1 /*
2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
4 *
5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12 #include <linux/interrupt.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
16 #include <linux/spinlock.h>
17 #include <linux/list.h>
18 #include <linux/pci.h>
19 #include <linux/delay.h>
20 #include <linux/completion.h>
21 #include <linux/etherdevice.h>
22 #include <linux/slab.h>
23 #include <net/mac80211.h>
24 #include <linux/moduleparam.h>
25 #include <linux/firmware.h>
26 #include <linux/workqueue.h>
27
28 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29 #define MWL8K_NAME KBUILD_MODNAME
30 #define MWL8K_VERSION "0.13"
31
32 /* Module parameters */
33 static bool ap_mode_default;
34 module_param(ap_mode_default, bool, 0);
35 MODULE_PARM_DESC(ap_mode_default,
36 "Set to 1 to make ap mode the default instead of sta mode");
37
38 /* Register definitions */
39 #define MWL8K_HIU_GEN_PTR 0x00000c10
40 #define MWL8K_MODE_STA 0x0000005a
41 #define MWL8K_MODE_AP 0x000000a5
42 #define MWL8K_HIU_INT_CODE 0x00000c14
43 #define MWL8K_FWSTA_READY 0xf0f1f2f4
44 #define MWL8K_FWAP_READY 0xf1f2f4a5
45 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
46 #define MWL8K_HIU_SCRATCH 0x00000c40
47
48 /* Host->device communications */
49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
51 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
54 #define MWL8K_H2A_INT_DUMMY (1 << 20)
55 #define MWL8K_H2A_INT_RESET (1 << 15)
56 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
57 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
58
59 /* Device->host communications */
60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
62 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
65 #define MWL8K_A2H_INT_DUMMY (1 << 20)
66 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
67 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
68 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
69 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
70 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
71 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
72 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
73 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
74 #define MWL8K_A2H_INT_RX_READY (1 << 1)
75 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
76
77 /* HW micro second timer register
78 * located at offset 0xA600. This
79 * will be used to timestamp tx
80 * packets.
81 */
82
83 #define MWL8K_HW_TIMER_REGISTER 0x0000a600
84 #define BBU_RXRDY_CNT_REG 0x0000a860
85 #define NOK_CCA_CNT_REG 0x0000a6a0
86 #define BBU_AVG_NOISE_VAL 0x67
87
88 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
89 MWL8K_A2H_INT_CHNL_SWITCHED | \
90 MWL8K_A2H_INT_QUEUE_EMPTY | \
91 MWL8K_A2H_INT_RADAR_DETECT | \
92 MWL8K_A2H_INT_RADIO_ON | \
93 MWL8K_A2H_INT_RADIO_OFF | \
94 MWL8K_A2H_INT_MAC_EVENT | \
95 MWL8K_A2H_INT_OPC_DONE | \
96 MWL8K_A2H_INT_RX_READY | \
97 MWL8K_A2H_INT_TX_DONE | \
98 MWL8K_A2H_INT_BA_WATCHDOG)
99
100 #define MWL8K_RX_QUEUES 1
101 #define MWL8K_TX_WMM_QUEUES 4
102 #define MWL8K_MAX_AMPDU_QUEUES 8
103 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
104 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
105
106 /* txpriorities are mapped with hw queues.
107 * Each hw queue has a txpriority.
108 */
109 #define TOTAL_HW_TX_QUEUES 8
110
111 /* Each HW queue can have one AMPDU stream.
112 * But, because one of the hw queue is reserved,
113 * maximum AMPDU queues that can be created are
114 * one short of total tx queues.
115 */
116 #define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
117
118 #define MWL8K_NUM_CHANS 18
119
120 struct rxd_ops {
121 int rxd_size;
122 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
123 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
124 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
125 __le16 *qos, s8 *noise);
126 };
127
128 struct mwl8k_device_info {
129 char *part_name;
130 char *helper_image;
131 char *fw_image_sta;
132 char *fw_image_ap;
133 struct rxd_ops *ap_rxd_ops;
134 u32 fw_api_ap;
135 };
136
137 struct mwl8k_rx_queue {
138 int rxd_count;
139
140 /* hw receives here */
141 int head;
142
143 /* refill descs here */
144 int tail;
145
146 void *rxd;
147 dma_addr_t rxd_dma;
148 struct {
149 struct sk_buff *skb;
150 DEFINE_DMA_UNMAP_ADDR(dma);
151 } *buf;
152 };
153
154 struct mwl8k_tx_queue {
155 /* hw transmits here */
156 int head;
157
158 /* sw appends here */
159 int tail;
160
161 unsigned int len;
162 struct mwl8k_tx_desc *txd;
163 dma_addr_t txd_dma;
164 struct sk_buff **skb;
165 };
166
167 enum {
168 AMPDU_NO_STREAM,
169 AMPDU_STREAM_NEW,
170 AMPDU_STREAM_IN_PROGRESS,
171 AMPDU_STREAM_ACTIVE,
172 };
173
174 struct mwl8k_ampdu_stream {
175 struct ieee80211_sta *sta;
176 u8 tid;
177 u8 state;
178 u8 idx;
179 };
180
181 struct mwl8k_priv {
182 struct ieee80211_hw *hw;
183 struct pci_dev *pdev;
184 int irq;
185
186 struct mwl8k_device_info *device_info;
187
188 void __iomem *sram;
189 void __iomem *regs;
190
191 /* firmware */
192 const struct firmware *fw_helper;
193 const struct firmware *fw_ucode;
194
195 /* hardware/firmware parameters */
196 bool ap_fw;
197 struct rxd_ops *rxd_ops;
198 struct ieee80211_supported_band band_24;
199 struct ieee80211_channel channels_24[14];
200 struct ieee80211_rate rates_24[13];
201 struct ieee80211_supported_band band_50;
202 struct ieee80211_channel channels_50[9];
203 struct ieee80211_rate rates_50[8];
204 u32 ap_macids_supported;
205 u32 sta_macids_supported;
206
207 /* Ampdu stream information */
208 u8 num_ampdu_queues;
209 spinlock_t stream_lock;
210 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
211 struct work_struct watchdog_ba_handle;
212
213 /* firmware access */
214 struct mutex fw_mutex;
215 struct task_struct *fw_mutex_owner;
216 struct task_struct *hw_restart_owner;
217 int fw_mutex_depth;
218 struct completion *hostcmd_wait;
219
220 atomic_t watchdog_event_pending;
221
222 /* lock held over TX and TX reap */
223 spinlock_t tx_lock;
224
225 /* TX quiesce completion, protected by fw_mutex and tx_lock */
226 struct completion *tx_wait;
227
228 /* List of interfaces. */
229 u32 macids_used;
230 struct list_head vif_list;
231
232 /* power management status cookie from firmware */
233 u32 *cookie;
234 dma_addr_t cookie_dma;
235
236 u16 num_mcaddrs;
237 u8 hw_rev;
238 u32 fw_rev;
239 u32 caps;
240
241 /*
242 * Running count of TX packets in flight, to avoid
243 * iterating over the transmit rings each time.
244 */
245 int pending_tx_pkts;
246
247 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
248 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
249 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
250
251 bool radio_on;
252 bool radio_short_preamble;
253 bool sniffer_enabled;
254 bool wmm_enabled;
255
256 /* XXX need to convert this to handle multiple interfaces */
257 bool capture_beacon;
258 u8 capture_bssid[ETH_ALEN];
259 struct sk_buff *beacon_skb;
260
261 /*
262 * This FJ worker has to be global as it is scheduled from the
263 * RX handler. At this point we don't know which interface it
264 * belongs to until the list of bssids waiting to complete join
265 * is checked.
266 */
267 struct work_struct finalize_join_worker;
268
269 /* Tasklet to perform TX reclaim. */
270 struct tasklet_struct poll_tx_task;
271
272 /* Tasklet to perform RX. */
273 struct tasklet_struct poll_rx_task;
274
275 /* Most recently reported noise in dBm */
276 s8 noise;
277
278 /*
279 * preserve the queue configurations so they can be restored if/when
280 * the firmware image is swapped.
281 */
282 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
283
284 /* To perform the task of reloading the firmware */
285 struct work_struct fw_reload;
286 bool hw_restart_in_progress;
287
288 /* async firmware loading state */
289 unsigned fw_state;
290 char *fw_pref;
291 char *fw_alt;
292 bool is_8764;
293 struct completion firmware_loading_complete;
294
295 /* bitmap of running BSSes */
296 u32 running_bsses;
297
298 /* ACS related */
299 bool sw_scan_start;
300 struct ieee80211_channel *acs_chan;
301 unsigned long channel_time;
302 struct survey_info survey[MWL8K_NUM_CHANS];
303 };
304
305 #define MAX_WEP_KEY_LEN 13
306 #define NUM_WEP_KEYS 4
307
308 /* Per interface specific private data */
309 struct mwl8k_vif {
310 struct list_head list;
311 struct ieee80211_vif *vif;
312
313 /* Firmware macid for this vif. */
314 int macid;
315
316 /* Non AMPDU sequence number assigned by driver. */
317 u16 seqno;
318
319 /* Saved WEP keys */
320 struct {
321 u8 enabled;
322 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
323 } wep_key_conf[NUM_WEP_KEYS];
324
325 /* BSSID */
326 u8 bssid[ETH_ALEN];
327
328 /* A flag to indicate is HW crypto is enabled for this bssid */
329 bool is_hw_crypto_enabled;
330 };
331 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
332 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
333
334 struct tx_traffic_info {
335 u32 start_time;
336 u32 pkts;
337 };
338
339 #define MWL8K_MAX_TID 8
340 struct mwl8k_sta {
341 /* Index into station database. Returned by UPDATE_STADB. */
342 u8 peer_id;
343 u8 is_ampdu_allowed;
344 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
345 };
346 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
347
348 static const struct ieee80211_channel mwl8k_channels_24[] = {
349 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
350 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
351 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
352 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
353 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
354 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
355 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
356 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
357 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
358 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
359 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
360 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
361 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
362 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
363 };
364
365 static const struct ieee80211_rate mwl8k_rates_24[] = {
366 { .bitrate = 10, .hw_value = 2, },
367 { .bitrate = 20, .hw_value = 4, },
368 { .bitrate = 55, .hw_value = 11, },
369 { .bitrate = 110, .hw_value = 22, },
370 { .bitrate = 220, .hw_value = 44, },
371 { .bitrate = 60, .hw_value = 12, },
372 { .bitrate = 90, .hw_value = 18, },
373 { .bitrate = 120, .hw_value = 24, },
374 { .bitrate = 180, .hw_value = 36, },
375 { .bitrate = 240, .hw_value = 48, },
376 { .bitrate = 360, .hw_value = 72, },
377 { .bitrate = 480, .hw_value = 96, },
378 { .bitrate = 540, .hw_value = 108, },
379 };
380
381 static const struct ieee80211_channel mwl8k_channels_50[] = {
382 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
383 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
384 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
385 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
386 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, .hw_value = 149, },
387 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, .hw_value = 153, },
388 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, .hw_value = 157, },
389 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, .hw_value = 161, },
390 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, .hw_value = 165, },
391 };
392
393 static const struct ieee80211_rate mwl8k_rates_50[] = {
394 { .bitrate = 60, .hw_value = 12, },
395 { .bitrate = 90, .hw_value = 18, },
396 { .bitrate = 120, .hw_value = 24, },
397 { .bitrate = 180, .hw_value = 36, },
398 { .bitrate = 240, .hw_value = 48, },
399 { .bitrate = 360, .hw_value = 72, },
400 { .bitrate = 480, .hw_value = 96, },
401 { .bitrate = 540, .hw_value = 108, },
402 };
403
404 /* Set or get info from Firmware */
405 #define MWL8K_CMD_GET 0x0000
406 #define MWL8K_CMD_SET 0x0001
407 #define MWL8K_CMD_SET_LIST 0x0002
408
409 /* Firmware command codes */
410 #define MWL8K_CMD_CODE_DNLD 0x0001
411 #define MWL8K_CMD_GET_HW_SPEC 0x0003
412 #define MWL8K_CMD_SET_HW_SPEC 0x0004
413 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
414 #define MWL8K_CMD_GET_STAT 0x0014
415 #define MWL8K_CMD_BBP_REG_ACCESS 0x001a
416 #define MWL8K_CMD_RADIO_CONTROL 0x001c
417 #define MWL8K_CMD_RF_TX_POWER 0x001e
418 #define MWL8K_CMD_TX_POWER 0x001f
419 #define MWL8K_CMD_RF_ANTENNA 0x0020
420 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
421 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
422 #define MWL8K_CMD_SET_POST_SCAN 0x0108
423 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
424 #define MWL8K_CMD_SET_AID 0x010d
425 #define MWL8K_CMD_SET_RATE 0x0110
426 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
427 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
428 #define MWL8K_CMD_SET_SLOT 0x0114
429 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
430 #define MWL8K_CMD_SET_WMM_MODE 0x0123
431 #define MWL8K_CMD_MIMO_CONFIG 0x0125
432 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
433 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
434 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
435 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
436 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
437 #define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
438 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
439 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
440 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
441 #define MWL8K_CMD_UPDATE_STADB 0x1123
442 #define MWL8K_CMD_BASTREAM 0x1125
443
444 #define MWL8K_LEGACY_5G_RATE_OFFSET \
445 (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50))
446
mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)447 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
448 {
449 u16 command = le16_to_cpu(cmd);
450
451 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
452 snprintf(buf, bufsize, "%s", #x);\
453 return buf;\
454 } while (0)
455 switch (command & ~0x8000) {
456 MWL8K_CMDNAME(CODE_DNLD);
457 MWL8K_CMDNAME(GET_HW_SPEC);
458 MWL8K_CMDNAME(SET_HW_SPEC);
459 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
460 MWL8K_CMDNAME(GET_STAT);
461 MWL8K_CMDNAME(RADIO_CONTROL);
462 MWL8K_CMDNAME(RF_TX_POWER);
463 MWL8K_CMDNAME(TX_POWER);
464 MWL8K_CMDNAME(RF_ANTENNA);
465 MWL8K_CMDNAME(SET_BEACON);
466 MWL8K_CMDNAME(SET_PRE_SCAN);
467 MWL8K_CMDNAME(SET_POST_SCAN);
468 MWL8K_CMDNAME(SET_RF_CHANNEL);
469 MWL8K_CMDNAME(SET_AID);
470 MWL8K_CMDNAME(SET_RATE);
471 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
472 MWL8K_CMDNAME(RTS_THRESHOLD);
473 MWL8K_CMDNAME(SET_SLOT);
474 MWL8K_CMDNAME(SET_EDCA_PARAMS);
475 MWL8K_CMDNAME(SET_WMM_MODE);
476 MWL8K_CMDNAME(MIMO_CONFIG);
477 MWL8K_CMDNAME(USE_FIXED_RATE);
478 MWL8K_CMDNAME(ENABLE_SNIFFER);
479 MWL8K_CMDNAME(SET_MAC_ADDR);
480 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
481 MWL8K_CMDNAME(BSS_START);
482 MWL8K_CMDNAME(SET_NEW_STN);
483 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
484 MWL8K_CMDNAME(UPDATE_STADB);
485 MWL8K_CMDNAME(BASTREAM);
486 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
487 default:
488 snprintf(buf, bufsize, "0x%x", cmd);
489 }
490 #undef MWL8K_CMDNAME
491
492 return buf;
493 }
494
495 /* Hardware and firmware reset */
mwl8k_hw_reset(struct mwl8k_priv *priv)496 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
497 {
498 iowrite32(MWL8K_H2A_INT_RESET,
499 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
500 iowrite32(MWL8K_H2A_INT_RESET,
501 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
502 msleep(20);
503 }
504
505 /* Release fw image */
mwl8k_release_fw(const struct firmware **fw)506 static void mwl8k_release_fw(const struct firmware **fw)
507 {
508 if (*fw == NULL)
509 return;
510 release_firmware(*fw);
511 *fw = NULL;
512 }
513
mwl8k_release_firmware(struct mwl8k_priv *priv)514 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
515 {
516 mwl8k_release_fw(&priv->fw_ucode);
517 mwl8k_release_fw(&priv->fw_helper);
518 }
519
520 /* states for asynchronous f/w loading */
521 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
522 enum {
523 FW_STATE_INIT = 0,
524 FW_STATE_LOADING_PREF,
525 FW_STATE_LOADING_ALT,
526 FW_STATE_ERROR,
527 };
528
529 /* Request fw image */
mwl8k_request_fw(struct mwl8k_priv *priv, const char *fname, const struct firmware **fw, bool nowait)530 static int mwl8k_request_fw(struct mwl8k_priv *priv,
531 const char *fname, const struct firmware **fw,
532 bool nowait)
533 {
534 /* release current image */
535 if (*fw != NULL)
536 mwl8k_release_fw(fw);
537
538 if (nowait)
539 return request_firmware_nowait(THIS_MODULE, 1, fname,
540 &priv->pdev->dev, GFP_KERNEL,
541 priv, mwl8k_fw_state_machine);
542 else
543 return request_firmware(fw, fname, &priv->pdev->dev);
544 }
545
mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image, bool nowait)546 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
547 bool nowait)
548 {
549 struct mwl8k_device_info *di = priv->device_info;
550 int rc;
551
552 if (di->helper_image != NULL) {
553 if (nowait)
554 rc = mwl8k_request_fw(priv, di->helper_image,
555 &priv->fw_helper, true);
556 else
557 rc = mwl8k_request_fw(priv, di->helper_image,
558 &priv->fw_helper, false);
559 if (rc)
560 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
561 pci_name(priv->pdev), di->helper_image);
562
563 if (rc || nowait)
564 return rc;
565 }
566
567 if (nowait) {
568 /*
569 * if we get here, no helper image is needed. Skip the
570 * FW_STATE_INIT state.
571 */
572 priv->fw_state = FW_STATE_LOADING_PREF;
573 rc = mwl8k_request_fw(priv, fw_image,
574 &priv->fw_ucode,
575 true);
576 } else
577 rc = mwl8k_request_fw(priv, fw_image,
578 &priv->fw_ucode, false);
579 if (rc) {
580 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
581 pci_name(priv->pdev), fw_image);
582 mwl8k_release_fw(&priv->fw_helper);
583 return rc;
584 }
585
586 return 0;
587 }
588
589 struct mwl8k_cmd_pkt {
590 __le16 code;
591 __le16 length;
592 __u8 seq_num;
593 __u8 macid;
594 __le16 result;
595 char payload[];
596 } __packed;
597
598 /*
599 * Firmware loading.
600 */
601 static int
mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)602 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
603 {
604 void __iomem *regs = priv->regs;
605 dma_addr_t dma_addr;
606 int loops;
607
608 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
609 if (pci_dma_mapping_error(priv->pdev, dma_addr))
610 return -ENOMEM;
611
612 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
613 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
614 iowrite32(MWL8K_H2A_INT_DOORBELL,
615 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
616 iowrite32(MWL8K_H2A_INT_DUMMY,
617 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
618
619 loops = 1000;
620 do {
621 u32 int_code;
622 if (priv->is_8764) {
623 int_code = ioread32(regs +
624 MWL8K_HIU_H2A_INTERRUPT_STATUS);
625 if (int_code == 0)
626 break;
627 } else {
628 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
629 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
630 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
631 break;
632 }
633 }
634 cond_resched();
635 udelay(1);
636 } while (--loops);
637
638 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
639
640 return loops ? 0 : -ETIMEDOUT;
641 }
642
mwl8k_load_fw_image(struct mwl8k_priv *priv, const u8 *data, size_t length)643 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
644 const u8 *data, size_t length)
645 {
646 struct mwl8k_cmd_pkt *cmd;
647 int done;
648 int rc = 0;
649
650 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
651 if (cmd == NULL)
652 return -ENOMEM;
653
654 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
655 cmd->seq_num = 0;
656 cmd->macid = 0;
657 cmd->result = 0;
658
659 done = 0;
660 while (length) {
661 int block_size = length > 256 ? 256 : length;
662
663 memcpy(cmd->payload, data + done, block_size);
664 cmd->length = cpu_to_le16(block_size);
665
666 rc = mwl8k_send_fw_load_cmd(priv, cmd,
667 sizeof(*cmd) + block_size);
668 if (rc)
669 break;
670
671 done += block_size;
672 length -= block_size;
673 }
674
675 if (!rc) {
676 cmd->length = 0;
677 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
678 }
679
680 kfree(cmd);
681
682 return rc;
683 }
684
mwl8k_feed_fw_image(struct mwl8k_priv *priv, const u8 *data, size_t length)685 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
686 const u8 *data, size_t length)
687 {
688 unsigned char *buffer;
689 int may_continue, rc = 0;
690 u32 done, prev_block_size;
691
692 buffer = kmalloc(1024, GFP_KERNEL);
693 if (buffer == NULL)
694 return -ENOMEM;
695
696 done = 0;
697 prev_block_size = 0;
698 may_continue = 1000;
699 while (may_continue > 0) {
700 u32 block_size;
701
702 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
703 if (block_size & 1) {
704 block_size &= ~1;
705 may_continue--;
706 } else {
707 done += prev_block_size;
708 length -= prev_block_size;
709 }
710
711 if (block_size > 1024 || block_size > length) {
712 rc = -EOVERFLOW;
713 break;
714 }
715
716 if (length == 0) {
717 rc = 0;
718 break;
719 }
720
721 if (block_size == 0) {
722 rc = -EPROTO;
723 may_continue--;
724 udelay(1);
725 continue;
726 }
727
728 prev_block_size = block_size;
729 memcpy(buffer, data + done, block_size);
730
731 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
732 if (rc)
733 break;
734 }
735
736 if (!rc && length != 0)
737 rc = -EREMOTEIO;
738
739 kfree(buffer);
740
741 return rc;
742 }
743
mwl8k_load_firmware(struct ieee80211_hw *hw)744 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
745 {
746 struct mwl8k_priv *priv = hw->priv;
747 const struct firmware *fw = priv->fw_ucode;
748 int rc;
749 int loops;
750
751 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
752 const struct firmware *helper = priv->fw_helper;
753
754 if (helper == NULL) {
755 printk(KERN_ERR "%s: helper image needed but none "
756 "given\n", pci_name(priv->pdev));
757 return -EINVAL;
758 }
759
760 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
761 if (rc) {
762 printk(KERN_ERR "%s: unable to load firmware "
763 "helper image\n", pci_name(priv->pdev));
764 return rc;
765 }
766 msleep(20);
767
768 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
769 } else {
770 if (priv->is_8764)
771 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
772 else
773 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
774 }
775
776 if (rc) {
777 printk(KERN_ERR "%s: unable to load firmware image\n",
778 pci_name(priv->pdev));
779 return rc;
780 }
781
782 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
783
784 loops = 500000;
785 do {
786 u32 ready_code;
787
788 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
789 if (ready_code == MWL8K_FWAP_READY) {
790 priv->ap_fw = true;
791 break;
792 } else if (ready_code == MWL8K_FWSTA_READY) {
793 priv->ap_fw = false;
794 break;
795 }
796
797 cond_resched();
798 udelay(1);
799 } while (--loops);
800
801 return loops ? 0 : -ETIMEDOUT;
802 }
803
804
805 /* DMA header used by firmware and hardware. */
806 struct mwl8k_dma_data {
807 __le16 fwlen;
808 struct ieee80211_hdr wh;
809 char data[];
810 } __packed;
811
812 /* Routines to add/remove DMA header from skb. */
mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)813 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
814 {
815 struct mwl8k_dma_data *tr;
816 int hdrlen;
817
818 tr = (struct mwl8k_dma_data *)skb->data;
819 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
820
821 if (hdrlen != sizeof(tr->wh)) {
822 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
823 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
824 *((__le16 *)(tr->data - 2)) = qos;
825 } else {
826 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
827 }
828 }
829
830 if (hdrlen != sizeof(*tr))
831 skb_pull(skb, sizeof(*tr) - hdrlen);
832 }
833
834 #define REDUCED_TX_HEADROOM 8
835
836 static void
mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, int head_pad, int tail_pad)837 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
838 int head_pad, int tail_pad)
839 {
840 struct ieee80211_hdr *wh;
841 int hdrlen;
842 int reqd_hdrlen;
843 struct mwl8k_dma_data *tr;
844
845 /*
846 * Add a firmware DMA header; the firmware requires that we
847 * present a 2-byte payload length followed by a 4-address
848 * header (without QoS field), followed (optionally) by any
849 * WEP/ExtIV header (but only filled in for CCMP).
850 */
851 wh = (struct ieee80211_hdr *)skb->data;
852
853 hdrlen = ieee80211_hdrlen(wh->frame_control);
854
855 /*
856 * Check if skb_resize is required because of
857 * tx_headroom adjustment.
858 */
859 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
860 + REDUCED_TX_HEADROOM))) {
861 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
862
863 wiphy_err(priv->hw->wiphy,
864 "Failed to reallocate TX buffer\n");
865 return;
866 }
867 skb->truesize += REDUCED_TX_HEADROOM;
868 }
869
870 reqd_hdrlen = sizeof(*tr) + head_pad;
871
872 if (hdrlen != reqd_hdrlen)
873 skb_push(skb, reqd_hdrlen - hdrlen);
874
875 if (ieee80211_is_data_qos(wh->frame_control))
876 hdrlen -= IEEE80211_QOS_CTL_LEN;
877
878 tr = (struct mwl8k_dma_data *)skb->data;
879 if (wh != &tr->wh)
880 memmove(&tr->wh, wh, hdrlen);
881 if (hdrlen != sizeof(tr->wh))
882 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
883
884 /*
885 * Firmware length is the length of the fully formed "802.11
886 * payload". That is, everything except for the 802.11 header.
887 * This includes all crypto material including the MIC.
888 */
889 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
890 }
891
mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, struct sk_buff *skb)892 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
893 struct sk_buff *skb)
894 {
895 struct ieee80211_hdr *wh;
896 struct ieee80211_tx_info *tx_info;
897 struct ieee80211_key_conf *key_conf;
898 int data_pad;
899 int head_pad = 0;
900
901 wh = (struct ieee80211_hdr *)skb->data;
902
903 tx_info = IEEE80211_SKB_CB(skb);
904
905 key_conf = NULL;
906 if (ieee80211_is_data(wh->frame_control))
907 key_conf = tx_info->control.hw_key;
908
909 /*
910 * Make sure the packet header is in the DMA header format (4-address
911 * without QoS), and add head & tail padding when HW crypto is enabled.
912 *
913 * We have the following trailer padding requirements:
914 * - WEP: 4 trailer bytes (ICV)
915 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
916 * - CCMP: 8 trailer bytes (MIC)
917 */
918 data_pad = 0;
919 if (key_conf != NULL) {
920 head_pad = key_conf->iv_len;
921 switch (key_conf->cipher) {
922 case WLAN_CIPHER_SUITE_WEP40:
923 case WLAN_CIPHER_SUITE_WEP104:
924 data_pad = 4;
925 break;
926 case WLAN_CIPHER_SUITE_TKIP:
927 data_pad = 12;
928 break;
929 case WLAN_CIPHER_SUITE_CCMP:
930 data_pad = 8;
931 break;
932 }
933 }
934 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
935 }
936
937 /*
938 * Packet reception for 88w8366/88w8764 AP firmware.
939 */
940 struct mwl8k_rxd_ap {
941 __le16 pkt_len;
942 __u8 sq2;
943 __u8 rate;
944 __le32 pkt_phys_addr;
945 __le32 next_rxd_phys_addr;
946 __le16 qos_control;
947 __le16 htsig2;
948 __le32 hw_rssi_info;
949 __le32 hw_noise_floor_info;
950 __u8 noise_floor;
951 __u8 pad0[3];
952 __u8 rssi;
953 __u8 rx_status;
954 __u8 channel;
955 __u8 rx_ctrl;
956 } __packed;
957
958 #define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
959 #define MWL8K_AP_RATE_INFO_40MHZ 0x40
960 #define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
961
962 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
963
964 /* 8366/8764 AP rx_status bits */
965 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
966 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
967 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
968 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
969 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
970
mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)971 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
972 {
973 struct mwl8k_rxd_ap *rxd = _rxd;
974
975 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
976 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
977 }
978
mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)979 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
980 {
981 struct mwl8k_rxd_ap *rxd = _rxd;
982
983 rxd->pkt_len = cpu_to_le16(len);
984 rxd->pkt_phys_addr = cpu_to_le32(addr);
985 wmb();
986 rxd->rx_ctrl = 0;
987 }
988
989 static int
mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status, __le16 *qos, s8 *noise)990 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
991 __le16 *qos, s8 *noise)
992 {
993 struct mwl8k_rxd_ap *rxd = _rxd;
994
995 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
996 return -1;
997 rmb();
998
999 memset(status, 0, sizeof(*status));
1000
1001 status->signal = -rxd->rssi;
1002 *noise = -rxd->noise_floor;
1003
1004 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
1005 status->encoding = RX_ENC_HT;
1006 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
1007 status->bw = RATE_INFO_BW_40;
1008 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
1009 } else {
1010 int i;
1011
1012 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
1013 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
1014 status->rate_idx = i;
1015 break;
1016 }
1017 }
1018 }
1019
1020 if (rxd->channel > 14) {
1021 status->band = NL80211_BAND_5GHZ;
1022 if (!(status->encoding == RX_ENC_HT) &&
1023 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1024 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1025 } else {
1026 status->band = NL80211_BAND_2GHZ;
1027 }
1028 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1029 status->band);
1030
1031 *qos = rxd->qos_control;
1032
1033 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1034 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1035 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1036 status->flag |= RX_FLAG_MMIC_ERROR;
1037
1038 return le16_to_cpu(rxd->pkt_len);
1039 }
1040
1041 static struct rxd_ops rxd_ap_ops = {
1042 .rxd_size = sizeof(struct mwl8k_rxd_ap),
1043 .rxd_init = mwl8k_rxd_ap_init,
1044 .rxd_refill = mwl8k_rxd_ap_refill,
1045 .rxd_process = mwl8k_rxd_ap_process,
1046 };
1047
1048 /*
1049 * Packet reception for STA firmware.
1050 */
1051 struct mwl8k_rxd_sta {
1052 __le16 pkt_len;
1053 __u8 link_quality;
1054 __u8 noise_level;
1055 __le32 pkt_phys_addr;
1056 __le32 next_rxd_phys_addr;
1057 __le16 qos_control;
1058 __le16 rate_info;
1059 __le32 pad0[4];
1060 __u8 rssi;
1061 __u8 channel;
1062 __le16 pad1;
1063 __u8 rx_ctrl;
1064 __u8 rx_status;
1065 __u8 pad2[2];
1066 } __packed;
1067
1068 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1069 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1070 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1071 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1072 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1073 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1074
1075 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1076 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1077 /* ICV=0 or MIC=1 */
1078 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1079 /* Key is uploaded only in failure case */
1080 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1081
mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)1082 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1083 {
1084 struct mwl8k_rxd_sta *rxd = _rxd;
1085
1086 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1087 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1088 }
1089
mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)1090 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1091 {
1092 struct mwl8k_rxd_sta *rxd = _rxd;
1093
1094 rxd->pkt_len = cpu_to_le16(len);
1095 rxd->pkt_phys_addr = cpu_to_le32(addr);
1096 wmb();
1097 rxd->rx_ctrl = 0;
1098 }
1099
1100 static int
mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, __le16 *qos, s8 *noise)1101 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1102 __le16 *qos, s8 *noise)
1103 {
1104 struct mwl8k_rxd_sta *rxd = _rxd;
1105 u16 rate_info;
1106
1107 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1108 return -1;
1109 rmb();
1110
1111 rate_info = le16_to_cpu(rxd->rate_info);
1112
1113 memset(status, 0, sizeof(*status));
1114
1115 status->signal = -rxd->rssi;
1116 *noise = -rxd->noise_level;
1117 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1118 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1119
1120 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1121 status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1122 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1123 status->bw = RATE_INFO_BW_40;
1124 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1125 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1126 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1127 status->encoding = RX_ENC_HT;
1128
1129 if (rxd->channel > 14) {
1130 status->band = NL80211_BAND_5GHZ;
1131 if (!(status->encoding == RX_ENC_HT) &&
1132 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1133 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1134 } else {
1135 status->band = NL80211_BAND_2GHZ;
1136 }
1137 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1138 status->band);
1139
1140 *qos = rxd->qos_control;
1141 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1142 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1143 status->flag |= RX_FLAG_MMIC_ERROR;
1144
1145 return le16_to_cpu(rxd->pkt_len);
1146 }
1147
1148 static struct rxd_ops rxd_sta_ops = {
1149 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1150 .rxd_init = mwl8k_rxd_sta_init,
1151 .rxd_refill = mwl8k_rxd_sta_refill,
1152 .rxd_process = mwl8k_rxd_sta_process,
1153 };
1154
1155
1156 #define MWL8K_RX_DESCS 256
1157 #define MWL8K_RX_MAXSZ 3800
1158
mwl8k_rxq_init(struct ieee80211_hw *hw, int index)1159 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1160 {
1161 struct mwl8k_priv *priv = hw->priv;
1162 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1163 int size;
1164 int i;
1165
1166 rxq->rxd_count = 0;
1167 rxq->head = 0;
1168 rxq->tail = 0;
1169
1170 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1171
1172 rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1173 if (rxq->rxd == NULL) {
1174 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1175 return -ENOMEM;
1176 }
1177
1178 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1179 if (rxq->buf == NULL) {
1180 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1181 return -ENOMEM;
1182 }
1183
1184 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1185 int desc_size;
1186 void *rxd;
1187 int nexti;
1188 dma_addr_t next_dma_addr;
1189
1190 desc_size = priv->rxd_ops->rxd_size;
1191 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1192
1193 nexti = i + 1;
1194 if (nexti == MWL8K_RX_DESCS)
1195 nexti = 0;
1196 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1197
1198 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1199 }
1200
1201 return 0;
1202 }
1203
rxq_refill(struct ieee80211_hw *hw, int index, int limit)1204 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1205 {
1206 struct mwl8k_priv *priv = hw->priv;
1207 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1208 int refilled;
1209
1210 refilled = 0;
1211 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1212 struct sk_buff *skb;
1213 dma_addr_t addr;
1214 int rx;
1215 void *rxd;
1216
1217 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1218 if (skb == NULL)
1219 break;
1220
1221 addr = pci_map_single(priv->pdev, skb->data,
1222 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1223
1224 rxq->rxd_count++;
1225 rx = rxq->tail++;
1226 if (rxq->tail == MWL8K_RX_DESCS)
1227 rxq->tail = 0;
1228 rxq->buf[rx].skb = skb;
1229 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1230
1231 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1232 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1233
1234 refilled++;
1235 }
1236
1237 return refilled;
1238 }
1239
1240 /* Must be called only when the card's reception is completely halted */
mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)1241 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1242 {
1243 struct mwl8k_priv *priv = hw->priv;
1244 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1245 int i;
1246
1247 if (rxq->rxd == NULL)
1248 return;
1249
1250 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1251 if (rxq->buf[i].skb != NULL) {
1252 pci_unmap_single(priv->pdev,
1253 dma_unmap_addr(&rxq->buf[i], dma),
1254 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1255 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1256
1257 kfree_skb(rxq->buf[i].skb);
1258 rxq->buf[i].skb = NULL;
1259 }
1260 }
1261
1262 kfree(rxq->buf);
1263 rxq->buf = NULL;
1264
1265 pci_free_consistent(priv->pdev,
1266 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1267 rxq->rxd, rxq->rxd_dma);
1268 rxq->rxd = NULL;
1269 }
1270
1271
1272 /*
1273 * Scan a list of BSSIDs to process for finalize join.
1274 * Allows for extension to process multiple BSSIDs.
1275 */
1276 static inline int
mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)1277 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1278 {
1279 return priv->capture_beacon &&
1280 ieee80211_is_beacon(wh->frame_control) &&
1281 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
1282 }
1283
mwl8k_save_beacon(struct ieee80211_hw *hw, struct sk_buff *skb)1284 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1285 struct sk_buff *skb)
1286 {
1287 struct mwl8k_priv *priv = hw->priv;
1288
1289 priv->capture_beacon = false;
1290 eth_zero_addr(priv->capture_bssid);
1291
1292 /*
1293 * Use GFP_ATOMIC as rxq_process is called from
1294 * the primary interrupt handler, memory allocation call
1295 * must not sleep.
1296 */
1297 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1298 if (priv->beacon_skb != NULL)
1299 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1300 }
1301
mwl8k_find_vif_bss(struct list_head *vif_list, u8 *bssid)1302 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1303 u8 *bssid)
1304 {
1305 struct mwl8k_vif *mwl8k_vif;
1306
1307 list_for_each_entry(mwl8k_vif,
1308 vif_list, list) {
1309 if (memcmp(bssid, mwl8k_vif->bssid,
1310 ETH_ALEN) == 0)
1311 return mwl8k_vif;
1312 }
1313
1314 return NULL;
1315 }
1316
rxq_process(struct ieee80211_hw *hw, int index, int limit)1317 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1318 {
1319 struct mwl8k_priv *priv = hw->priv;
1320 struct mwl8k_vif *mwl8k_vif = NULL;
1321 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1322 int processed;
1323
1324 processed = 0;
1325 while (rxq->rxd_count && limit--) {
1326 struct sk_buff *skb;
1327 void *rxd;
1328 int pkt_len;
1329 struct ieee80211_rx_status status;
1330 struct ieee80211_hdr *wh;
1331 __le16 qos;
1332
1333 skb = rxq->buf[rxq->head].skb;
1334 if (skb == NULL)
1335 break;
1336
1337 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1338
1339 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1340 &priv->noise);
1341 if (pkt_len < 0)
1342 break;
1343
1344 rxq->buf[rxq->head].skb = NULL;
1345
1346 pci_unmap_single(priv->pdev,
1347 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1348 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1349 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1350
1351 rxq->head++;
1352 if (rxq->head == MWL8K_RX_DESCS)
1353 rxq->head = 0;
1354
1355 rxq->rxd_count--;
1356
1357 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1358
1359 /*
1360 * Check for a pending join operation. Save a
1361 * copy of the beacon and schedule a tasklet to
1362 * send a FINALIZE_JOIN command to the firmware.
1363 */
1364 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1365 mwl8k_save_beacon(hw, skb);
1366
1367 if (ieee80211_has_protected(wh->frame_control)) {
1368
1369 /* Check if hw crypto has been enabled for
1370 * this bss. If yes, set the status flags
1371 * accordingly
1372 */
1373 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1374 wh->addr1);
1375
1376 if (mwl8k_vif != NULL &&
1377 mwl8k_vif->is_hw_crypto_enabled) {
1378 /*
1379 * When MMIC ERROR is encountered
1380 * by the firmware, payload is
1381 * dropped and only 32 bytes of
1382 * mwl8k Firmware header is sent
1383 * to the host.
1384 *
1385 * We need to add four bytes of
1386 * key information. In it
1387 * MAC80211 expects keyidx set to
1388 * 0 for triggering Counter
1389 * Measure of MMIC failure.
1390 */
1391 if (status.flag & RX_FLAG_MMIC_ERROR) {
1392 struct mwl8k_dma_data *tr;
1393 tr = (struct mwl8k_dma_data *)skb->data;
1394 memset((void *)&(tr->data), 0, 4);
1395 pkt_len += 4;
1396 }
1397
1398 if (!ieee80211_is_auth(wh->frame_control))
1399 status.flag |= RX_FLAG_IV_STRIPPED |
1400 RX_FLAG_DECRYPTED |
1401 RX_FLAG_MMIC_STRIPPED;
1402 }
1403 }
1404
1405 skb_put(skb, pkt_len);
1406 mwl8k_remove_dma_header(skb, qos);
1407 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1408 ieee80211_rx_irqsafe(hw, skb);
1409
1410 processed++;
1411 }
1412
1413 return processed;
1414 }
1415
1416
1417 /*
1418 * Packet transmission.
1419 */
1420
1421 #define MWL8K_TXD_STATUS_OK 0x00000001
1422 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1423 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1424 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1425 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1426
1427 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1428 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1429 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1430 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1431 #define MWL8K_QOS_EOSP 0x0010
1432
1433 struct mwl8k_tx_desc {
1434 __le32 status;
1435 __u8 data_rate;
1436 __u8 tx_priority;
1437 __le16 qos_control;
1438 __le32 pkt_phys_addr;
1439 __le16 pkt_len;
1440 __u8 dest_MAC_addr[ETH_ALEN];
1441 __le32 next_txd_phys_addr;
1442 __le32 timestamp;
1443 __le16 rate_info;
1444 __u8 peer_id;
1445 __u8 tx_frag_cnt;
1446 } __packed;
1447
1448 #define MWL8K_TX_DESCS 128
1449
mwl8k_txq_init(struct ieee80211_hw *hw, int index)1450 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1451 {
1452 struct mwl8k_priv *priv = hw->priv;
1453 struct mwl8k_tx_queue *txq = priv->txq + index;
1454 int size;
1455 int i;
1456
1457 txq->len = 0;
1458 txq->head = 0;
1459 txq->tail = 0;
1460
1461 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1462
1463 txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma);
1464 if (txq->txd == NULL) {
1465 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1466 return -ENOMEM;
1467 }
1468
1469 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1470 if (txq->skb == NULL) {
1471 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1472 txq->txd = NULL;
1473 return -ENOMEM;
1474 }
1475
1476 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1477 struct mwl8k_tx_desc *tx_desc;
1478 int nexti;
1479
1480 tx_desc = txq->txd + i;
1481 nexti = (i + 1) % MWL8K_TX_DESCS;
1482
1483 tx_desc->status = 0;
1484 tx_desc->next_txd_phys_addr =
1485 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1486 }
1487
1488 return 0;
1489 }
1490
mwl8k_tx_start(struct mwl8k_priv *priv)1491 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1492 {
1493 iowrite32(MWL8K_H2A_INT_PPA_READY,
1494 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1495 iowrite32(MWL8K_H2A_INT_DUMMY,
1496 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1497 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1498 }
1499
mwl8k_dump_tx_rings(struct ieee80211_hw *hw)1500 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1501 {
1502 struct mwl8k_priv *priv = hw->priv;
1503 int i;
1504
1505 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1506 struct mwl8k_tx_queue *txq = priv->txq + i;
1507 int fw_owned = 0;
1508 int drv_owned = 0;
1509 int unused = 0;
1510 int desc;
1511
1512 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1513 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1514 u32 status;
1515
1516 status = le32_to_cpu(tx_desc->status);
1517 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1518 fw_owned++;
1519 else
1520 drv_owned++;
1521
1522 if (tx_desc->pkt_len == 0)
1523 unused++;
1524 }
1525
1526 wiphy_err(hw->wiphy,
1527 "txq[%d] len=%d head=%d tail=%d "
1528 "fw_owned=%d drv_owned=%d unused=%d\n",
1529 i,
1530 txq->len, txq->head, txq->tail,
1531 fw_owned, drv_owned, unused);
1532 }
1533 }
1534
1535 /*
1536 * Must be called with priv->fw_mutex held and tx queues stopped.
1537 */
1538 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1539
mwl8k_tx_wait_empty(struct ieee80211_hw *hw)1540 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1541 {
1542 struct mwl8k_priv *priv = hw->priv;
1543 DECLARE_COMPLETION_ONSTACK(tx_wait);
1544 int retry;
1545 int rc;
1546
1547 might_sleep();
1548
1549 /* Since fw restart is in progress, allow only the firmware
1550 * commands from the restart code and block the other
1551 * commands since they are going to fail in any case since
1552 * the firmware has crashed
1553 */
1554 if (priv->hw_restart_in_progress) {
1555 if (priv->hw_restart_owner == current)
1556 return 0;
1557 else
1558 return -EBUSY;
1559 }
1560
1561 if (atomic_read(&priv->watchdog_event_pending))
1562 return 0;
1563
1564 /*
1565 * The TX queues are stopped at this point, so this test
1566 * doesn't need to take ->tx_lock.
1567 */
1568 if (!priv->pending_tx_pkts)
1569 return 0;
1570
1571 retry = 1;
1572 rc = 0;
1573
1574 spin_lock_bh(&priv->tx_lock);
1575 priv->tx_wait = &tx_wait;
1576 while (!rc) {
1577 int oldcount;
1578 unsigned long timeout;
1579
1580 oldcount = priv->pending_tx_pkts;
1581
1582 spin_unlock_bh(&priv->tx_lock);
1583 timeout = wait_for_completion_timeout(&tx_wait,
1584 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1585
1586 if (atomic_read(&priv->watchdog_event_pending)) {
1587 spin_lock_bh(&priv->tx_lock);
1588 priv->tx_wait = NULL;
1589 spin_unlock_bh(&priv->tx_lock);
1590 return 0;
1591 }
1592
1593 spin_lock_bh(&priv->tx_lock);
1594
1595 if (timeout || !priv->pending_tx_pkts) {
1596 WARN_ON(priv->pending_tx_pkts);
1597 if (retry)
1598 wiphy_notice(hw->wiphy, "tx rings drained\n");
1599 break;
1600 }
1601
1602 if (retry) {
1603 mwl8k_tx_start(priv);
1604 retry = 0;
1605 continue;
1606 }
1607
1608 if (priv->pending_tx_pkts < oldcount) {
1609 wiphy_notice(hw->wiphy,
1610 "waiting for tx rings to drain (%d -> %d pkts)\n",
1611 oldcount, priv->pending_tx_pkts);
1612 retry = 1;
1613 continue;
1614 }
1615
1616 priv->tx_wait = NULL;
1617
1618 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1619 MWL8K_TX_WAIT_TIMEOUT_MS);
1620 mwl8k_dump_tx_rings(hw);
1621 priv->hw_restart_in_progress = true;
1622 ieee80211_queue_work(hw, &priv->fw_reload);
1623
1624 rc = -ETIMEDOUT;
1625 }
1626 priv->tx_wait = NULL;
1627 spin_unlock_bh(&priv->tx_lock);
1628
1629 return rc;
1630 }
1631
1632 #define MWL8K_TXD_SUCCESS(status) \
1633 ((status) & (MWL8K_TXD_STATUS_OK | \
1634 MWL8K_TXD_STATUS_OK_RETRY | \
1635 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1636
mwl8k_tid_queue_mapping(u8 tid)1637 static int mwl8k_tid_queue_mapping(u8 tid)
1638 {
1639 BUG_ON(tid > 7);
1640
1641 switch (tid) {
1642 case 0:
1643 case 3:
1644 return IEEE80211_AC_BE;
1645 case 1:
1646 case 2:
1647 return IEEE80211_AC_BK;
1648 case 4:
1649 case 5:
1650 return IEEE80211_AC_VI;
1651 case 6:
1652 case 7:
1653 return IEEE80211_AC_VO;
1654 default:
1655 return -1;
1656 }
1657 }
1658
1659 /* The firmware will fill in the rate information
1660 * for each packet that gets queued in the hardware
1661 * and these macros will interpret that info.
1662 */
1663
1664 #define RI_FORMAT(a) (a & 0x0001)
1665 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1666
1667 static int
mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)1668 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1669 {
1670 struct mwl8k_priv *priv = hw->priv;
1671 struct mwl8k_tx_queue *txq = priv->txq + index;
1672 int processed;
1673
1674 processed = 0;
1675 while (txq->len > 0 && limit--) {
1676 int tx;
1677 struct mwl8k_tx_desc *tx_desc;
1678 unsigned long addr;
1679 int size;
1680 struct sk_buff *skb;
1681 struct ieee80211_tx_info *info;
1682 u32 status;
1683 struct ieee80211_sta *sta;
1684 struct mwl8k_sta *sta_info = NULL;
1685 u16 rate_info;
1686 struct ieee80211_hdr *wh;
1687
1688 tx = txq->head;
1689 tx_desc = txq->txd + tx;
1690
1691 status = le32_to_cpu(tx_desc->status);
1692
1693 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1694 if (!force)
1695 break;
1696 tx_desc->status &=
1697 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1698 }
1699
1700 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1701 BUG_ON(txq->len == 0);
1702 txq->len--;
1703 priv->pending_tx_pkts--;
1704
1705 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1706 size = le16_to_cpu(tx_desc->pkt_len);
1707 skb = txq->skb[tx];
1708 txq->skb[tx] = NULL;
1709
1710 BUG_ON(skb == NULL);
1711 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1712
1713 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1714
1715 wh = (struct ieee80211_hdr *) skb->data;
1716
1717 /* Mark descriptor as unused */
1718 tx_desc->pkt_phys_addr = 0;
1719 tx_desc->pkt_len = 0;
1720
1721 info = IEEE80211_SKB_CB(skb);
1722 if (ieee80211_is_data(wh->frame_control)) {
1723 rcu_read_lock();
1724 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1725 wh->addr2);
1726 if (sta) {
1727 sta_info = MWL8K_STA(sta);
1728 BUG_ON(sta_info == NULL);
1729 rate_info = le16_to_cpu(tx_desc->rate_info);
1730 /* If rate is < 6.5 Mpbs for an ht station
1731 * do not form an ampdu. If the station is a
1732 * legacy station (format = 0), do not form an
1733 * ampdu
1734 */
1735 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1736 RI_FORMAT(rate_info) == 0) {
1737 sta_info->is_ampdu_allowed = false;
1738 } else {
1739 sta_info->is_ampdu_allowed = true;
1740 }
1741 }
1742 rcu_read_unlock();
1743 }
1744
1745 ieee80211_tx_info_clear_status(info);
1746
1747 /* Rate control is happening in the firmware.
1748 * Ensure no tx rate is being reported.
1749 */
1750 info->status.rates[0].idx = -1;
1751 info->status.rates[0].count = 1;
1752
1753 if (MWL8K_TXD_SUCCESS(status))
1754 info->flags |= IEEE80211_TX_STAT_ACK;
1755
1756 ieee80211_tx_status_irqsafe(hw, skb);
1757
1758 processed++;
1759 }
1760
1761 return processed;
1762 }
1763
1764 /* must be called only when the card's transmit is completely halted */
mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)1765 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1766 {
1767 struct mwl8k_priv *priv = hw->priv;
1768 struct mwl8k_tx_queue *txq = priv->txq + index;
1769
1770 if (txq->txd == NULL)
1771 return;
1772
1773 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1774
1775 kfree(txq->skb);
1776 txq->skb = NULL;
1777
1778 pci_free_consistent(priv->pdev,
1779 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1780 txq->txd, txq->txd_dma);
1781 txq->txd = NULL;
1782 }
1783
1784 /* caller must hold priv->stream_lock when calling the stream functions */
1785 static struct mwl8k_ampdu_stream *
mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)1786 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1787 {
1788 struct mwl8k_ampdu_stream *stream;
1789 struct mwl8k_priv *priv = hw->priv;
1790 int i;
1791
1792 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1793 stream = &priv->ampdu[i];
1794 if (stream->state == AMPDU_NO_STREAM) {
1795 stream->sta = sta;
1796 stream->state = AMPDU_STREAM_NEW;
1797 stream->tid = tid;
1798 stream->idx = i;
1799 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1800 sta->addr, tid);
1801 return stream;
1802 }
1803 }
1804 return NULL;
1805 }
1806
1807 static int
mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)1808 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1809 {
1810 int ret;
1811
1812 /* if the stream has already been started, don't start it again */
1813 if (stream->state != AMPDU_STREAM_NEW)
1814 return 0;
1815 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1816 if (ret)
1817 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1818 "%d\n", stream->sta->addr, stream->tid, ret);
1819 else
1820 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1821 stream->sta->addr, stream->tid);
1822 return ret;
1823 }
1824
1825 static void
mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)1826 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1827 {
1828 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1829 stream->tid);
1830 memset(stream, 0, sizeof(*stream));
1831 }
1832
1833 static struct mwl8k_ampdu_stream *
mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)1834 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1835 {
1836 struct mwl8k_priv *priv = hw->priv;
1837 int i;
1838
1839 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1840 struct mwl8k_ampdu_stream *stream;
1841 stream = &priv->ampdu[i];
1842 if (stream->state == AMPDU_NO_STREAM)
1843 continue;
1844 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1845 stream->tid == tid)
1846 return stream;
1847 }
1848 return NULL;
1849 }
1850
1851 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)1852 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1853 {
1854 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1855 struct tx_traffic_info *tx_stats;
1856
1857 BUG_ON(tid >= MWL8K_MAX_TID);
1858 tx_stats = &sta_info->tx_stats[tid];
1859
1860 return sta_info->is_ampdu_allowed &&
1861 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1862 }
1863
mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)1864 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1865 {
1866 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1867 struct tx_traffic_info *tx_stats;
1868
1869 BUG_ON(tid >= MWL8K_MAX_TID);
1870 tx_stats = &sta_info->tx_stats[tid];
1871
1872 if (tx_stats->start_time == 0)
1873 tx_stats->start_time = jiffies;
1874
1875 /* reset the packet count after each second elapses. If the number of
1876 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1877 * an ampdu stream to be started.
1878 */
1879 if (jiffies - tx_stats->start_time > HZ) {
1880 tx_stats->pkts = 0;
1881 tx_stats->start_time = 0;
1882 } else
1883 tx_stats->pkts++;
1884 }
1885
1886 /* The hardware ampdu queues start from 5.
1887 * txpriorities for ampdu queues are
1888 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1889 * and queue 3 is lowest (queue 4 is reserved)
1890 */
1891 #define BA_QUEUE 5
1892
1893 static void
mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct ieee80211_sta *sta, struct sk_buff *skb)1894 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1895 int index,
1896 struct ieee80211_sta *sta,
1897 struct sk_buff *skb)
1898 {
1899 struct mwl8k_priv *priv = hw->priv;
1900 struct ieee80211_tx_info *tx_info;
1901 struct mwl8k_vif *mwl8k_vif;
1902 struct ieee80211_hdr *wh;
1903 struct mwl8k_tx_queue *txq;
1904 struct mwl8k_tx_desc *tx;
1905 dma_addr_t dma;
1906 u32 txstatus;
1907 u8 txdatarate;
1908 u16 qos;
1909 int txpriority;
1910 u8 tid = 0;
1911 struct mwl8k_ampdu_stream *stream = NULL;
1912 bool start_ba_session = false;
1913 bool mgmtframe = false;
1914 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1915 bool eapol_frame = false;
1916
1917 wh = (struct ieee80211_hdr *)skb->data;
1918 if (ieee80211_is_data_qos(wh->frame_control))
1919 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1920 else
1921 qos = 0;
1922
1923 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1924 eapol_frame = true;
1925
1926 if (ieee80211_is_mgmt(wh->frame_control))
1927 mgmtframe = true;
1928
1929 if (priv->ap_fw)
1930 mwl8k_encapsulate_tx_frame(priv, skb);
1931 else
1932 mwl8k_add_dma_header(priv, skb, 0, 0);
1933
1934 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1935
1936 tx_info = IEEE80211_SKB_CB(skb);
1937 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1938
1939 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1940 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1941 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1942 mwl8k_vif->seqno += 0x10;
1943 }
1944
1945 /* Setup firmware control bit fields for each frame type. */
1946 txstatus = 0;
1947 txdatarate = 0;
1948 if (ieee80211_is_mgmt(wh->frame_control) ||
1949 ieee80211_is_ctl(wh->frame_control)) {
1950 txdatarate = 0;
1951 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1952 } else if (ieee80211_is_data(wh->frame_control)) {
1953 txdatarate = 1;
1954 if (is_multicast_ether_addr(wh->addr1))
1955 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1956
1957 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1958 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1959 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1960 else
1961 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1962 }
1963
1964 /* Queue ADDBA request in the respective data queue. While setting up
1965 * the ampdu stream, mac80211 queues further packets for that
1966 * particular ra/tid pair. However, packets piled up in the hardware
1967 * for that ra/tid pair will still go out. ADDBA request and the
1968 * related data packets going out from different queues asynchronously
1969 * will cause a shift in the receiver window which might result in
1970 * ampdu packets getting dropped at the receiver after the stream has
1971 * been setup.
1972 */
1973 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1974 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1975 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1976 priv->ap_fw)) {
1977 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1978 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1979 index = mwl8k_tid_queue_mapping(tid);
1980 }
1981
1982 txpriority = index;
1983
1984 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1985 ieee80211_is_data_qos(wh->frame_control)) {
1986 tid = qos & 0xf;
1987 mwl8k_tx_count_packet(sta, tid);
1988 spin_lock(&priv->stream_lock);
1989 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1990 if (stream != NULL) {
1991 if (stream->state == AMPDU_STREAM_ACTIVE) {
1992 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1993 txpriority = (BA_QUEUE + stream->idx) %
1994 TOTAL_HW_TX_QUEUES;
1995 if (stream->idx <= 1)
1996 index = stream->idx +
1997 MWL8K_TX_WMM_QUEUES;
1998
1999 } else if (stream->state == AMPDU_STREAM_NEW) {
2000 /* We get here if the driver sends us packets
2001 * after we've initiated a stream, but before
2002 * our ampdu_action routine has been called
2003 * with IEEE80211_AMPDU_TX_START to get the SSN
2004 * for the ADDBA request. So this packet can
2005 * go out with no risk of sequence number
2006 * mismatch. No special handling is required.
2007 */
2008 } else {
2009 /* Drop packets that would go out after the
2010 * ADDBA request was sent but before the ADDBA
2011 * response is received. If we don't do this,
2012 * the recipient would probably receive it
2013 * after the ADDBA request with SSN 0. This
2014 * will cause the recipient's BA receive window
2015 * to shift, which would cause the subsequent
2016 * packets in the BA stream to be discarded.
2017 * mac80211 queues our packets for us in this
2018 * case, so this is really just a safety check.
2019 */
2020 wiphy_warn(hw->wiphy,
2021 "Cannot send packet while ADDBA "
2022 "dialog is underway.\n");
2023 spin_unlock(&priv->stream_lock);
2024 dev_kfree_skb(skb);
2025 return;
2026 }
2027 } else {
2028 /* Defer calling mwl8k_start_stream so that the current
2029 * skb can go out before the ADDBA request. This
2030 * prevents sequence number mismatch at the recepient
2031 * as described above.
2032 */
2033 if (mwl8k_ampdu_allowed(sta, tid)) {
2034 stream = mwl8k_add_stream(hw, sta, tid);
2035 if (stream != NULL)
2036 start_ba_session = true;
2037 }
2038 }
2039 spin_unlock(&priv->stream_lock);
2040 } else {
2041 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2042 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2043 }
2044
2045 dma = pci_map_single(priv->pdev, skb->data,
2046 skb->len, PCI_DMA_TODEVICE);
2047
2048 if (pci_dma_mapping_error(priv->pdev, dma)) {
2049 wiphy_debug(hw->wiphy,
2050 "failed to dma map skb, dropping TX frame.\n");
2051 if (start_ba_session) {
2052 spin_lock(&priv->stream_lock);
2053 mwl8k_remove_stream(hw, stream);
2054 spin_unlock(&priv->stream_lock);
2055 }
2056 dev_kfree_skb(skb);
2057 return;
2058 }
2059
2060 spin_lock_bh(&priv->tx_lock);
2061
2062 txq = priv->txq + index;
2063
2064 /* Mgmt frames that go out frequently are probe
2065 * responses. Other mgmt frames got out relatively
2066 * infrequently. Hence reserve 2 buffers so that
2067 * other mgmt frames do not get dropped due to an
2068 * already queued probe response in one of the
2069 * reserved buffers.
2070 */
2071
2072 if (txq->len >= MWL8K_TX_DESCS - 2) {
2073 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2074 if (start_ba_session) {
2075 spin_lock(&priv->stream_lock);
2076 mwl8k_remove_stream(hw, stream);
2077 spin_unlock(&priv->stream_lock);
2078 }
2079 mwl8k_tx_start(priv);
2080 spin_unlock_bh(&priv->tx_lock);
2081 pci_unmap_single(priv->pdev, dma, skb->len,
2082 PCI_DMA_TODEVICE);
2083 dev_kfree_skb(skb);
2084 return;
2085 }
2086 }
2087
2088 BUG_ON(txq->skb[txq->tail] != NULL);
2089 txq->skb[txq->tail] = skb;
2090
2091 tx = txq->txd + txq->tail;
2092 tx->data_rate = txdatarate;
2093 tx->tx_priority = txpriority;
2094 tx->qos_control = cpu_to_le16(qos);
2095 tx->pkt_phys_addr = cpu_to_le32(dma);
2096 tx->pkt_len = cpu_to_le16(skb->len);
2097 tx->rate_info = 0;
2098 if (!priv->ap_fw && sta != NULL)
2099 tx->peer_id = MWL8K_STA(sta)->peer_id;
2100 else
2101 tx->peer_id = 0;
2102
2103 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2104 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2105 MWL8K_HW_TIMER_REGISTER));
2106 else
2107 tx->timestamp = 0;
2108
2109 wmb();
2110 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2111
2112 txq->len++;
2113 priv->pending_tx_pkts++;
2114
2115 txq->tail++;
2116 if (txq->tail == MWL8K_TX_DESCS)
2117 txq->tail = 0;
2118
2119 mwl8k_tx_start(priv);
2120
2121 spin_unlock_bh(&priv->tx_lock);
2122
2123 /* Initiate the ampdu session here */
2124 if (start_ba_session) {
2125 spin_lock(&priv->stream_lock);
2126 if (mwl8k_start_stream(hw, stream))
2127 mwl8k_remove_stream(hw, stream);
2128 spin_unlock(&priv->stream_lock);
2129 }
2130 }
2131
2132
2133 /*
2134 * Firmware access.
2135 *
2136 * We have the following requirements for issuing firmware commands:
2137 * - Some commands require that the packet transmit path is idle when
2138 * the command is issued. (For simplicity, we'll just quiesce the
2139 * transmit path for every command.)
2140 * - There are certain sequences of commands that need to be issued to
2141 * the hardware sequentially, with no other intervening commands.
2142 *
2143 * This leads to an implementation of a "firmware lock" as a mutex that
2144 * can be taken recursively, and which is taken by both the low-level
2145 * command submission function (mwl8k_post_cmd) as well as any users of
2146 * that function that require issuing of an atomic sequence of commands,
2147 * and quiesces the transmit path whenever it's taken.
2148 */
mwl8k_fw_lock(struct ieee80211_hw *hw)2149 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2150 {
2151 struct mwl8k_priv *priv = hw->priv;
2152
2153 if (priv->fw_mutex_owner != current) {
2154 int rc;
2155
2156 mutex_lock(&priv->fw_mutex);
2157 ieee80211_stop_queues(hw);
2158
2159 rc = mwl8k_tx_wait_empty(hw);
2160 if (rc) {
2161 if (!priv->hw_restart_in_progress)
2162 ieee80211_wake_queues(hw);
2163
2164 mutex_unlock(&priv->fw_mutex);
2165
2166 return rc;
2167 }
2168
2169 priv->fw_mutex_owner = current;
2170 }
2171
2172 priv->fw_mutex_depth++;
2173
2174 return 0;
2175 }
2176
mwl8k_fw_unlock(struct ieee80211_hw *hw)2177 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2178 {
2179 struct mwl8k_priv *priv = hw->priv;
2180
2181 if (!--priv->fw_mutex_depth) {
2182 if (!priv->hw_restart_in_progress)
2183 ieee80211_wake_queues(hw);
2184
2185 priv->fw_mutex_owner = NULL;
2186 mutex_unlock(&priv->fw_mutex);
2187 }
2188 }
2189
2190 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2191 u32 bitmap);
2192
2193 /*
2194 * Command processing.
2195 */
2196
2197 /* Timeout firmware commands after 10s */
2198 #define MWL8K_CMD_TIMEOUT_MS 10000
2199
mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)2200 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2201 {
2202 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2203 struct mwl8k_priv *priv = hw->priv;
2204 void __iomem *regs = priv->regs;
2205 dma_addr_t dma_addr;
2206 unsigned int dma_size;
2207 int rc;
2208 unsigned long timeout = 0;
2209 u8 buf[32];
2210 u32 bitmap = 0;
2211
2212 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2213 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2214
2215 /* Before posting firmware commands that could change the hardware
2216 * characteristics, make sure that all BSSes are stopped temporary.
2217 * Enable these stopped BSSes after completion of the commands
2218 */
2219
2220 rc = mwl8k_fw_lock(hw);
2221 if (rc)
2222 return rc;
2223
2224 if (priv->ap_fw && priv->running_bsses) {
2225 switch (le16_to_cpu(cmd->code)) {
2226 case MWL8K_CMD_SET_RF_CHANNEL:
2227 case MWL8K_CMD_RADIO_CONTROL:
2228 case MWL8K_CMD_RF_TX_POWER:
2229 case MWL8K_CMD_TX_POWER:
2230 case MWL8K_CMD_RF_ANTENNA:
2231 case MWL8K_CMD_RTS_THRESHOLD:
2232 case MWL8K_CMD_MIMO_CONFIG:
2233 bitmap = priv->running_bsses;
2234 mwl8k_enable_bsses(hw, false, bitmap);
2235 break;
2236 }
2237 }
2238
2239 cmd->result = (__force __le16) 0xffff;
2240 dma_size = le16_to_cpu(cmd->length);
2241 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2242 PCI_DMA_BIDIRECTIONAL);
2243 if (pci_dma_mapping_error(priv->pdev, dma_addr)) {
2244 rc = -ENOMEM;
2245 goto exit;
2246 }
2247
2248 priv->hostcmd_wait = &cmd_wait;
2249 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2250 iowrite32(MWL8K_H2A_INT_DOORBELL,
2251 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2252 iowrite32(MWL8K_H2A_INT_DUMMY,
2253 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2254
2255 timeout = wait_for_completion_timeout(&cmd_wait,
2256 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2257
2258 priv->hostcmd_wait = NULL;
2259
2260
2261 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2262 PCI_DMA_BIDIRECTIONAL);
2263
2264 if (!timeout) {
2265 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2266 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2267 MWL8K_CMD_TIMEOUT_MS);
2268 rc = -ETIMEDOUT;
2269 } else {
2270 int ms;
2271
2272 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2273
2274 rc = cmd->result ? -EINVAL : 0;
2275 if (rc)
2276 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2277 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2278 le16_to_cpu(cmd->result));
2279 else if (ms > 2000)
2280 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2281 mwl8k_cmd_name(cmd->code,
2282 buf, sizeof(buf)),
2283 ms);
2284 }
2285
2286 exit:
2287 if (bitmap)
2288 mwl8k_enable_bsses(hw, true, bitmap);
2289
2290 mwl8k_fw_unlock(hw);
2291
2292 return rc;
2293 }
2294
mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct mwl8k_cmd_pkt *cmd)2295 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2296 struct ieee80211_vif *vif,
2297 struct mwl8k_cmd_pkt *cmd)
2298 {
2299 if (vif != NULL)
2300 cmd->macid = MWL8K_VIF(vif)->macid;
2301 return mwl8k_post_cmd(hw, cmd);
2302 }
2303
2304 /*
2305 * Setup code shared between STA and AP firmware images.
2306 */
mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)2307 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2308 {
2309 struct mwl8k_priv *priv = hw->priv;
2310
2311 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2312 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2313
2314 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2315 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2316
2317 priv->band_24.band = NL80211_BAND_2GHZ;
2318 priv->band_24.channels = priv->channels_24;
2319 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2320 priv->band_24.bitrates = priv->rates_24;
2321 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2322
2323 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24;
2324 }
2325
mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)2326 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2327 {
2328 struct mwl8k_priv *priv = hw->priv;
2329
2330 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2331 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2332
2333 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2334 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2335
2336 priv->band_50.band = NL80211_BAND_5GHZ;
2337 priv->band_50.channels = priv->channels_50;
2338 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2339 priv->band_50.bitrates = priv->rates_50;
2340 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2341
2342 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50;
2343 }
2344
2345 /*
2346 * CMD_GET_HW_SPEC (STA version).
2347 */
2348 struct mwl8k_cmd_get_hw_spec_sta {
2349 struct mwl8k_cmd_pkt header;
2350 __u8 hw_rev;
2351 __u8 host_interface;
2352 __le16 num_mcaddrs;
2353 __u8 perm_addr[ETH_ALEN];
2354 __le16 region_code;
2355 __le32 fw_rev;
2356 __le32 ps_cookie;
2357 __le32 caps;
2358 __u8 mcs_bitmap[16];
2359 __le32 rx_queue_ptr;
2360 __le32 num_tx_queues;
2361 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2362 __le32 caps2;
2363 __le32 num_tx_desc_per_queue;
2364 __le32 total_rxd;
2365 } __packed;
2366
2367 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2368 #define MWL8K_CAP_GREENFIELD 0x08000000
2369 #define MWL8K_CAP_AMPDU 0x04000000
2370 #define MWL8K_CAP_RX_STBC 0x01000000
2371 #define MWL8K_CAP_TX_STBC 0x00800000
2372 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2373 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2374 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2375 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2376 #define MWL8K_CAP_DELAY_BA 0x00003000
2377 #define MWL8K_CAP_MIMO 0x00000200
2378 #define MWL8K_CAP_40MHZ 0x00000100
2379 #define MWL8K_CAP_BAND_MASK 0x00000007
2380 #define MWL8K_CAP_5GHZ 0x00000004
2381 #define MWL8K_CAP_2GHZ4 0x00000001
2382
2383 static void
mwl8k_set_ht_caps(struct ieee80211_hw *hw, struct ieee80211_supported_band *band, u32 cap)2384 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2385 struct ieee80211_supported_band *band, u32 cap)
2386 {
2387 int rx_streams;
2388 int tx_streams;
2389
2390 band->ht_cap.ht_supported = 1;
2391
2392 if (cap & MWL8K_CAP_MAX_AMSDU)
2393 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2394 if (cap & MWL8K_CAP_GREENFIELD)
2395 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2396 if (cap & MWL8K_CAP_AMPDU) {
2397 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2398 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2399 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2400 }
2401 if (cap & MWL8K_CAP_RX_STBC)
2402 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2403 if (cap & MWL8K_CAP_TX_STBC)
2404 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2405 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2406 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2407 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2408 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2409 if (cap & MWL8K_CAP_DELAY_BA)
2410 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2411 if (cap & MWL8K_CAP_40MHZ)
2412 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2413
2414 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2415 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2416
2417 band->ht_cap.mcs.rx_mask[0] = 0xff;
2418 if (rx_streams >= 2)
2419 band->ht_cap.mcs.rx_mask[1] = 0xff;
2420 if (rx_streams >= 3)
2421 band->ht_cap.mcs.rx_mask[2] = 0xff;
2422 band->ht_cap.mcs.rx_mask[4] = 0x01;
2423 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2424
2425 if (rx_streams != tx_streams) {
2426 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2427 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2428 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2429 }
2430 }
2431
2432 static void
mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)2433 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2434 {
2435 struct mwl8k_priv *priv = hw->priv;
2436
2437 if (priv->caps)
2438 return;
2439
2440 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2441 mwl8k_setup_2ghz_band(hw);
2442 if (caps & MWL8K_CAP_MIMO)
2443 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2444 }
2445
2446 if (caps & MWL8K_CAP_5GHZ) {
2447 mwl8k_setup_5ghz_band(hw);
2448 if (caps & MWL8K_CAP_MIMO)
2449 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2450 }
2451
2452 priv->caps = caps;
2453 }
2454
mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)2455 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2456 {
2457 struct mwl8k_priv *priv = hw->priv;
2458 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2459 int rc;
2460 int i;
2461
2462 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2463 if (cmd == NULL)
2464 return -ENOMEM;
2465
2466 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2467 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2468
2469 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2470 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2471 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2472 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2473 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2474 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2475 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2476 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2477
2478 rc = mwl8k_post_cmd(hw, &cmd->header);
2479
2480 if (!rc) {
2481 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2482 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2483 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2484 priv->hw_rev = cmd->hw_rev;
2485 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2486 priv->ap_macids_supported = 0x00000000;
2487 priv->sta_macids_supported = 0x00000001;
2488 }
2489
2490 kfree(cmd);
2491 return rc;
2492 }
2493
2494 /*
2495 * CMD_GET_HW_SPEC (AP version).
2496 */
2497 struct mwl8k_cmd_get_hw_spec_ap {
2498 struct mwl8k_cmd_pkt header;
2499 __u8 hw_rev;
2500 __u8 host_interface;
2501 __le16 num_wcb;
2502 __le16 num_mcaddrs;
2503 __u8 perm_addr[ETH_ALEN];
2504 __le16 region_code;
2505 __le16 num_antenna;
2506 __le32 fw_rev;
2507 __le32 wcbbase0;
2508 __le32 rxwrptr;
2509 __le32 rxrdptr;
2510 __le32 ps_cookie;
2511 __le32 wcbbase1;
2512 __le32 wcbbase2;
2513 __le32 wcbbase3;
2514 __le32 fw_api_version;
2515 __le32 caps;
2516 __le32 num_of_ampdu_queues;
2517 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2518 } __packed;
2519
mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)2520 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2521 {
2522 struct mwl8k_priv *priv = hw->priv;
2523 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2524 int rc, i;
2525 u32 api_version;
2526
2527 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2528 if (cmd == NULL)
2529 return -ENOMEM;
2530
2531 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2532 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2533
2534 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2535 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2536
2537 rc = mwl8k_post_cmd(hw, &cmd->header);
2538
2539 if (!rc) {
2540 int off;
2541
2542 api_version = le32_to_cpu(cmd->fw_api_version);
2543 if (priv->device_info->fw_api_ap != api_version) {
2544 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2545 " Expected %d got %d.\n", MWL8K_NAME,
2546 priv->device_info->part_name,
2547 priv->device_info->fw_api_ap,
2548 api_version);
2549 rc = -EINVAL;
2550 goto done;
2551 }
2552 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2553 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2554 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2555 priv->hw_rev = cmd->hw_rev;
2556 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2557 priv->ap_macids_supported = 0x000000ff;
2558 priv->sta_macids_supported = 0x00000100;
2559 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2560 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2561 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2562 " but we only support %d.\n",
2563 priv->num_ampdu_queues,
2564 MWL8K_MAX_AMPDU_QUEUES);
2565 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2566 }
2567 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2568 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2569
2570 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2571 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2572
2573 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2574 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2575 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2576 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2577
2578 for (i = 0; i < priv->num_ampdu_queues; i++)
2579 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2580 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2581 }
2582
2583 done:
2584 kfree(cmd);
2585 return rc;
2586 }
2587
2588 /*
2589 * CMD_SET_HW_SPEC.
2590 */
2591 struct mwl8k_cmd_set_hw_spec {
2592 struct mwl8k_cmd_pkt header;
2593 __u8 hw_rev;
2594 __u8 host_interface;
2595 __le16 num_mcaddrs;
2596 __u8 perm_addr[ETH_ALEN];
2597 __le16 region_code;
2598 __le32 fw_rev;
2599 __le32 ps_cookie;
2600 __le32 caps;
2601 __le32 rx_queue_ptr;
2602 __le32 num_tx_queues;
2603 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2604 __le32 flags;
2605 __le32 num_tx_desc_per_queue;
2606 __le32 total_rxd;
2607 } __packed;
2608
2609 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2610 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2611 * the packets that are queued for more than 500ms, will be dropped in the
2612 * hardware. This helps minimizing the issues caused due to head-of-line
2613 * blocking where a slow client can hog the bandwidth and affect traffic to a
2614 * faster client.
2615 */
2616 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2617 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2618 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2619 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2620 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2621
mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)2622 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2623 {
2624 struct mwl8k_priv *priv = hw->priv;
2625 struct mwl8k_cmd_set_hw_spec *cmd;
2626 int rc;
2627 int i;
2628
2629 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2630 if (cmd == NULL)
2631 return -ENOMEM;
2632
2633 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2634 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2635
2636 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2637 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2638 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2639
2640 /*
2641 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2642 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2643 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2644 * priority is interpreted the right way in firmware.
2645 */
2646 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2647 int j = mwl8k_tx_queues(priv) - 1 - i;
2648 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2649 }
2650
2651 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2652 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2653 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2654 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2655 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2656 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2657 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2658
2659 rc = mwl8k_post_cmd(hw, &cmd->header);
2660 kfree(cmd);
2661
2662 return rc;
2663 }
2664
2665 /*
2666 * CMD_MAC_MULTICAST_ADR.
2667 */
2668 struct mwl8k_cmd_mac_multicast_adr {
2669 struct mwl8k_cmd_pkt header;
2670 __le16 action;
2671 __le16 numaddr;
2672 __u8 addr[][ETH_ALEN];
2673 };
2674
2675 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2676 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2677 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2678 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2679
2680 static struct mwl8k_cmd_pkt *
__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, struct netdev_hw_addr_list *mc_list)2681 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2682 struct netdev_hw_addr_list *mc_list)
2683 {
2684 struct mwl8k_priv *priv = hw->priv;
2685 struct mwl8k_cmd_mac_multicast_adr *cmd;
2686 int size;
2687 int mc_count = 0;
2688
2689 if (mc_list)
2690 mc_count = netdev_hw_addr_list_count(mc_list);
2691
2692 if (allmulti || mc_count > priv->num_mcaddrs) {
2693 allmulti = 1;
2694 mc_count = 0;
2695 }
2696
2697 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2698
2699 cmd = kzalloc(size, GFP_ATOMIC);
2700 if (cmd == NULL)
2701 return NULL;
2702
2703 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2704 cmd->header.length = cpu_to_le16(size);
2705 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2706 MWL8K_ENABLE_RX_BROADCAST);
2707
2708 if (allmulti) {
2709 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2710 } else if (mc_count) {
2711 struct netdev_hw_addr *ha;
2712 int i = 0;
2713
2714 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2715 cmd->numaddr = cpu_to_le16(mc_count);
2716 netdev_hw_addr_list_for_each(ha, mc_list) {
2717 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2718 }
2719 }
2720
2721 return &cmd->header;
2722 }
2723
2724 /*
2725 * CMD_GET_STAT.
2726 */
2727 struct mwl8k_cmd_get_stat {
2728 struct mwl8k_cmd_pkt header;
2729 __le32 stats[64];
2730 } __packed;
2731
2732 #define MWL8K_STAT_ACK_FAILURE 9
2733 #define MWL8K_STAT_RTS_FAILURE 12
2734 #define MWL8K_STAT_FCS_ERROR 24
2735 #define MWL8K_STAT_RTS_SUCCESS 11
2736
mwl8k_cmd_get_stat(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats)2737 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2738 struct ieee80211_low_level_stats *stats)
2739 {
2740 struct mwl8k_cmd_get_stat *cmd;
2741 int rc;
2742
2743 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2744 if (cmd == NULL)
2745 return -ENOMEM;
2746
2747 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2748 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2749
2750 rc = mwl8k_post_cmd(hw, &cmd->header);
2751 if (!rc) {
2752 stats->dot11ACKFailureCount =
2753 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2754 stats->dot11RTSFailureCount =
2755 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2756 stats->dot11FCSErrorCount =
2757 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2758 stats->dot11RTSSuccessCount =
2759 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2760 }
2761 kfree(cmd);
2762
2763 return rc;
2764 }
2765
2766 /*
2767 * CMD_RADIO_CONTROL.
2768 */
2769 struct mwl8k_cmd_radio_control {
2770 struct mwl8k_cmd_pkt header;
2771 __le16 action;
2772 __le16 control;
2773 __le16 radio_on;
2774 } __packed;
2775
2776 static int
mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)2777 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2778 {
2779 struct mwl8k_priv *priv = hw->priv;
2780 struct mwl8k_cmd_radio_control *cmd;
2781 int rc;
2782
2783 if (enable == priv->radio_on && !force)
2784 return 0;
2785
2786 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2787 if (cmd == NULL)
2788 return -ENOMEM;
2789
2790 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2791 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2792 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2793 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2794 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2795
2796 rc = mwl8k_post_cmd(hw, &cmd->header);
2797 kfree(cmd);
2798
2799 if (!rc)
2800 priv->radio_on = enable;
2801
2802 return rc;
2803 }
2804
mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)2805 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2806 {
2807 return mwl8k_cmd_radio_control(hw, 0, 0);
2808 }
2809
mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)2810 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2811 {
2812 return mwl8k_cmd_radio_control(hw, 1, 0);
2813 }
2814
2815 static int
mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)2816 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2817 {
2818 struct mwl8k_priv *priv = hw->priv;
2819
2820 priv->radio_short_preamble = short_preamble;
2821
2822 return mwl8k_cmd_radio_control(hw, 1, 1);
2823 }
2824
2825 /*
2826 * CMD_RF_TX_POWER.
2827 */
2828 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2829
2830 struct mwl8k_cmd_rf_tx_power {
2831 struct mwl8k_cmd_pkt header;
2832 __le16 action;
2833 __le16 support_level;
2834 __le16 current_level;
2835 __le16 reserved;
2836 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2837 } __packed;
2838
mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)2839 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2840 {
2841 struct mwl8k_cmd_rf_tx_power *cmd;
2842 int rc;
2843
2844 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2845 if (cmd == NULL)
2846 return -ENOMEM;
2847
2848 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2849 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2850 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2851 cmd->support_level = cpu_to_le16(dBm);
2852
2853 rc = mwl8k_post_cmd(hw, &cmd->header);
2854 kfree(cmd);
2855
2856 return rc;
2857 }
2858
2859 /*
2860 * CMD_TX_POWER.
2861 */
2862 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2863
2864 struct mwl8k_cmd_tx_power {
2865 struct mwl8k_cmd_pkt header;
2866 __le16 action;
2867 __le16 band;
2868 __le16 channel;
2869 __le16 bw;
2870 __le16 sub_ch;
2871 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2872 } __packed;
2873
mwl8k_cmd_tx_power(struct ieee80211_hw *hw, struct ieee80211_conf *conf, unsigned short pwr)2874 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2875 struct ieee80211_conf *conf,
2876 unsigned short pwr)
2877 {
2878 struct ieee80211_channel *channel = conf->chandef.chan;
2879 enum nl80211_channel_type channel_type =
2880 cfg80211_get_chandef_type(&conf->chandef);
2881 struct mwl8k_cmd_tx_power *cmd;
2882 int rc;
2883 int i;
2884
2885 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2886 if (cmd == NULL)
2887 return -ENOMEM;
2888
2889 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2890 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2891 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2892
2893 if (channel->band == NL80211_BAND_2GHZ)
2894 cmd->band = cpu_to_le16(0x1);
2895 else if (channel->band == NL80211_BAND_5GHZ)
2896 cmd->band = cpu_to_le16(0x4);
2897
2898 cmd->channel = cpu_to_le16(channel->hw_value);
2899
2900 if (channel_type == NL80211_CHAN_NO_HT ||
2901 channel_type == NL80211_CHAN_HT20) {
2902 cmd->bw = cpu_to_le16(0x2);
2903 } else {
2904 cmd->bw = cpu_to_le16(0x4);
2905 if (channel_type == NL80211_CHAN_HT40MINUS)
2906 cmd->sub_ch = cpu_to_le16(0x3);
2907 else if (channel_type == NL80211_CHAN_HT40PLUS)
2908 cmd->sub_ch = cpu_to_le16(0x1);
2909 }
2910
2911 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2912 cmd->power_level_list[i] = cpu_to_le16(pwr);
2913
2914 rc = mwl8k_post_cmd(hw, &cmd->header);
2915 kfree(cmd);
2916
2917 return rc;
2918 }
2919
2920 /*
2921 * CMD_RF_ANTENNA.
2922 */
2923 struct mwl8k_cmd_rf_antenna {
2924 struct mwl8k_cmd_pkt header;
2925 __le16 antenna;
2926 __le16 mode;
2927 } __packed;
2928
2929 #define MWL8K_RF_ANTENNA_RX 1
2930 #define MWL8K_RF_ANTENNA_TX 2
2931
2932 static int
mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)2933 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2934 {
2935 struct mwl8k_cmd_rf_antenna *cmd;
2936 int rc;
2937
2938 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2939 if (cmd == NULL)
2940 return -ENOMEM;
2941
2942 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2943 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2944 cmd->antenna = cpu_to_le16(antenna);
2945 cmd->mode = cpu_to_le16(mask);
2946
2947 rc = mwl8k_post_cmd(hw, &cmd->header);
2948 kfree(cmd);
2949
2950 return rc;
2951 }
2952
2953 /*
2954 * CMD_SET_BEACON.
2955 */
2956 struct mwl8k_cmd_set_beacon {
2957 struct mwl8k_cmd_pkt header;
2958 __le16 beacon_len;
2959 __u8 beacon[];
2960 };
2961
mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *beacon, int len)2962 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2963 struct ieee80211_vif *vif, u8 *beacon, int len)
2964 {
2965 struct mwl8k_cmd_set_beacon *cmd;
2966 int rc;
2967
2968 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2969 if (cmd == NULL)
2970 return -ENOMEM;
2971
2972 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2973 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2974 cmd->beacon_len = cpu_to_le16(len);
2975 memcpy(cmd->beacon, beacon, len);
2976
2977 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2978 kfree(cmd);
2979
2980 return rc;
2981 }
2982
2983 /*
2984 * CMD_SET_PRE_SCAN.
2985 */
2986 struct mwl8k_cmd_set_pre_scan {
2987 struct mwl8k_cmd_pkt header;
2988 } __packed;
2989
mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)2990 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2991 {
2992 struct mwl8k_cmd_set_pre_scan *cmd;
2993 int rc;
2994
2995 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2996 if (cmd == NULL)
2997 return -ENOMEM;
2998
2999 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
3000 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3001
3002 rc = mwl8k_post_cmd(hw, &cmd->header);
3003 kfree(cmd);
3004
3005 return rc;
3006 }
3007
3008 /*
3009 * CMD_BBP_REG_ACCESS.
3010 */
3011 struct mwl8k_cmd_bbp_reg_access {
3012 struct mwl8k_cmd_pkt header;
3013 __le16 action;
3014 __le16 offset;
3015 u8 value;
3016 u8 rsrv[3];
3017 } __packed;
3018
3019 static int
mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw, u16 action, u16 offset, u8 *value)3020 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
3021 u16 action,
3022 u16 offset,
3023 u8 *value)
3024 {
3025 struct mwl8k_cmd_bbp_reg_access *cmd;
3026 int rc;
3027
3028 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3029 if (cmd == NULL)
3030 return -ENOMEM;
3031
3032 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
3033 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3034 cmd->action = cpu_to_le16(action);
3035 cmd->offset = cpu_to_le16(offset);
3036
3037 rc = mwl8k_post_cmd(hw, &cmd->header);
3038
3039 if (!rc)
3040 *value = cmd->value;
3041 else
3042 *value = 0;
3043
3044 kfree(cmd);
3045
3046 return rc;
3047 }
3048
3049 /*
3050 * CMD_SET_POST_SCAN.
3051 */
3052 struct mwl8k_cmd_set_post_scan {
3053 struct mwl8k_cmd_pkt header;
3054 __le32 isibss;
3055 __u8 bssid[ETH_ALEN];
3056 } __packed;
3057
3058 static int
mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)3059 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
3060 {
3061 struct mwl8k_cmd_set_post_scan *cmd;
3062 int rc;
3063
3064 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3065 if (cmd == NULL)
3066 return -ENOMEM;
3067
3068 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3069 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3070 cmd->isibss = 0;
3071 memcpy(cmd->bssid, mac, ETH_ALEN);
3072
3073 rc = mwl8k_post_cmd(hw, &cmd->header);
3074 kfree(cmd);
3075
3076 return rc;
3077 }
3078
freq_to_idx(struct mwl8k_priv *priv, int freq)3079 static int freq_to_idx(struct mwl8k_priv *priv, int freq)
3080 {
3081 struct ieee80211_supported_band *sband;
3082 int band, ch, idx = 0;
3083
3084 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3085 sband = priv->hw->wiphy->bands[band];
3086 if (!sband)
3087 continue;
3088
3089 for (ch = 0; ch < sband->n_channels; ch++, idx++)
3090 if (sband->channels[ch].center_freq == freq)
3091 goto exit;
3092 }
3093
3094 exit:
3095 return idx;
3096 }
3097
mwl8k_update_survey(struct mwl8k_priv *priv, struct ieee80211_channel *channel)3098 static void mwl8k_update_survey(struct mwl8k_priv *priv,
3099 struct ieee80211_channel *channel)
3100 {
3101 u32 cca_cnt, rx_rdy;
3102 s8 nf = 0, idx;
3103 struct survey_info *survey;
3104
3105 idx = freq_to_idx(priv, priv->acs_chan->center_freq);
3106 if (idx >= MWL8K_NUM_CHANS) {
3107 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
3108 return;
3109 }
3110
3111 survey = &priv->survey[idx];
3112
3113 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
3114 cca_cnt /= 1000; /* uSecs to mSecs */
3115 survey->time_busy = (u64) cca_cnt;
3116
3117 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
3118 rx_rdy /= 1000; /* uSecs to mSecs */
3119 survey->time_rx = (u64) rx_rdy;
3120
3121 priv->channel_time = jiffies - priv->channel_time;
3122 survey->time = jiffies_to_msecs(priv->channel_time);
3123
3124 survey->channel = channel;
3125
3126 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
3127
3128 /* Make sure sign is negative else ACS at hostapd fails */
3129 survey->noise = nf * -1;
3130
3131 survey->filled = SURVEY_INFO_NOISE_DBM |
3132 SURVEY_INFO_TIME |
3133 SURVEY_INFO_TIME_BUSY |
3134 SURVEY_INFO_TIME_RX;
3135 }
3136
3137 /*
3138 * CMD_SET_RF_CHANNEL.
3139 */
3140 struct mwl8k_cmd_set_rf_channel {
3141 struct mwl8k_cmd_pkt header;
3142 __le16 action;
3143 __u8 current_channel;
3144 __le32 channel_flags;
3145 } __packed;
3146
mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, struct ieee80211_conf *conf)3147 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3148 struct ieee80211_conf *conf)
3149 {
3150 struct ieee80211_channel *channel = conf->chandef.chan;
3151 enum nl80211_channel_type channel_type =
3152 cfg80211_get_chandef_type(&conf->chandef);
3153 struct mwl8k_cmd_set_rf_channel *cmd;
3154 struct mwl8k_priv *priv = hw->priv;
3155 int rc;
3156
3157 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3158 if (cmd == NULL)
3159 return -ENOMEM;
3160
3161 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3162 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3163 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3164 cmd->current_channel = channel->hw_value;
3165
3166 if (channel->band == NL80211_BAND_2GHZ)
3167 cmd->channel_flags |= cpu_to_le32(0x00000001);
3168 else if (channel->band == NL80211_BAND_5GHZ)
3169 cmd->channel_flags |= cpu_to_le32(0x00000004);
3170
3171 if (!priv->sw_scan_start) {
3172 if (channel_type == NL80211_CHAN_NO_HT ||
3173 channel_type == NL80211_CHAN_HT20)
3174 cmd->channel_flags |= cpu_to_le32(0x00000080);
3175 else if (channel_type == NL80211_CHAN_HT40MINUS)
3176 cmd->channel_flags |= cpu_to_le32(0x000001900);
3177 else if (channel_type == NL80211_CHAN_HT40PLUS)
3178 cmd->channel_flags |= cpu_to_le32(0x000000900);
3179 } else {
3180 cmd->channel_flags |= cpu_to_le32(0x00000080);
3181 }
3182
3183 if (priv->sw_scan_start) {
3184 /* Store current channel stats
3185 * before switching to newer one.
3186 * This will be processed only for AP fw.
3187 */
3188 if (priv->channel_time != 0)
3189 mwl8k_update_survey(priv, priv->acs_chan);
3190
3191 priv->channel_time = jiffies;
3192 priv->acs_chan = channel;
3193 }
3194
3195 rc = mwl8k_post_cmd(hw, &cmd->header);
3196 kfree(cmd);
3197
3198 return rc;
3199 }
3200
3201 /*
3202 * CMD_SET_AID.
3203 */
3204 #define MWL8K_FRAME_PROT_DISABLED 0x00
3205 #define MWL8K_FRAME_PROT_11G 0x07
3206 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
3207 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
3208
3209 struct mwl8k_cmd_update_set_aid {
3210 struct mwl8k_cmd_pkt header;
3211 __le16 aid;
3212
3213 /* AP's MAC address (BSSID) */
3214 __u8 bssid[ETH_ALEN];
3215 __le16 protection_mode;
3216 __u8 supp_rates[14];
3217 } __packed;
3218
legacy_rate_mask_to_array(u8 *rates, u32 mask)3219 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3220 {
3221 int i;
3222 int j;
3223
3224 /*
3225 * Clear nonstandard rate 4.
3226 */
3227 mask &= 0x1fef;
3228
3229 for (i = 0, j = 0; i < 13; i++) {
3230 if (mask & (1 << i))
3231 rates[j++] = mwl8k_rates_24[i].hw_value;
3232 }
3233 }
3234
3235 static int
mwl8k_cmd_set_aid(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 legacy_rate_mask)3236 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3237 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3238 {
3239 struct mwl8k_cmd_update_set_aid *cmd;
3240 u16 prot_mode;
3241 int rc;
3242
3243 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3244 if (cmd == NULL)
3245 return -ENOMEM;
3246
3247 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3248 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3249 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3250 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3251
3252 if (vif->bss_conf.use_cts_prot) {
3253 prot_mode = MWL8K_FRAME_PROT_11G;
3254 } else {
3255 switch (vif->bss_conf.ht_operation_mode &
3256 IEEE80211_HT_OP_MODE_PROTECTION) {
3257 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3258 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3259 break;
3260 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3261 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3262 break;
3263 default:
3264 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3265 break;
3266 }
3267 }
3268 cmd->protection_mode = cpu_to_le16(prot_mode);
3269
3270 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3271
3272 rc = mwl8k_post_cmd(hw, &cmd->header);
3273 kfree(cmd);
3274
3275 return rc;
3276 }
3277
3278 /*
3279 * CMD_SET_RATE.
3280 */
3281 struct mwl8k_cmd_set_rate {
3282 struct mwl8k_cmd_pkt header;
3283 __u8 legacy_rates[14];
3284
3285 /* Bitmap for supported MCS codes. */
3286 __u8 mcs_set[16];
3287 __u8 reserved[16];
3288 } __packed;
3289
3290 static int
mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 legacy_rate_mask, u8 *mcs_rates)3291 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3292 u32 legacy_rate_mask, u8 *mcs_rates)
3293 {
3294 struct mwl8k_cmd_set_rate *cmd;
3295 int rc;
3296
3297 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3298 if (cmd == NULL)
3299 return -ENOMEM;
3300
3301 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3302 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3303 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3304 memcpy(cmd->mcs_set, mcs_rates, 16);
3305
3306 rc = mwl8k_post_cmd(hw, &cmd->header);
3307 kfree(cmd);
3308
3309 return rc;
3310 }
3311
3312 /*
3313 * CMD_FINALIZE_JOIN.
3314 */
3315 #define MWL8K_FJ_BEACON_MAXLEN 128
3316
3317 struct mwl8k_cmd_finalize_join {
3318 struct mwl8k_cmd_pkt header;
3319 __le32 sleep_interval; /* Number of beacon periods to sleep */
3320 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3321 } __packed;
3322
mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, int framelen, int dtim)3323 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3324 int framelen, int dtim)
3325 {
3326 struct mwl8k_cmd_finalize_join *cmd;
3327 struct ieee80211_mgmt *payload = frame;
3328 int payload_len;
3329 int rc;
3330
3331 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3332 if (cmd == NULL)
3333 return -ENOMEM;
3334
3335 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3336 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3337 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3338
3339 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3340 if (payload_len < 0)
3341 payload_len = 0;
3342 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3343 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3344
3345 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3346
3347 rc = mwl8k_post_cmd(hw, &cmd->header);
3348 kfree(cmd);
3349
3350 return rc;
3351 }
3352
3353 /*
3354 * CMD_SET_RTS_THRESHOLD.
3355 */
3356 struct mwl8k_cmd_set_rts_threshold {
3357 struct mwl8k_cmd_pkt header;
3358 __le16 action;
3359 __le16 threshold;
3360 } __packed;
3361
3362 static int
mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)3363 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3364 {
3365 struct mwl8k_cmd_set_rts_threshold *cmd;
3366 int rc;
3367
3368 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3369 if (cmd == NULL)
3370 return -ENOMEM;
3371
3372 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3373 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3374 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3375 cmd->threshold = cpu_to_le16(rts_thresh);
3376
3377 rc = mwl8k_post_cmd(hw, &cmd->header);
3378 kfree(cmd);
3379
3380 return rc;
3381 }
3382
3383 /*
3384 * CMD_SET_SLOT.
3385 */
3386 struct mwl8k_cmd_set_slot {
3387 struct mwl8k_cmd_pkt header;
3388 __le16 action;
3389 __u8 short_slot;
3390 } __packed;
3391
mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)3392 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3393 {
3394 struct mwl8k_cmd_set_slot *cmd;
3395 int rc;
3396
3397 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3398 if (cmd == NULL)
3399 return -ENOMEM;
3400
3401 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3402 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3403 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3404 cmd->short_slot = short_slot_time;
3405
3406 rc = mwl8k_post_cmd(hw, &cmd->header);
3407 kfree(cmd);
3408
3409 return rc;
3410 }
3411
3412 /*
3413 * CMD_SET_EDCA_PARAMS.
3414 */
3415 struct mwl8k_cmd_set_edca_params {
3416 struct mwl8k_cmd_pkt header;
3417
3418 /* See MWL8K_SET_EDCA_XXX below */
3419 __le16 action;
3420
3421 /* TX opportunity in units of 32 us */
3422 __le16 txop;
3423
3424 union {
3425 struct {
3426 /* Log exponent of max contention period: 0...15 */
3427 __le32 log_cw_max;
3428
3429 /* Log exponent of min contention period: 0...15 */
3430 __le32 log_cw_min;
3431
3432 /* Adaptive interframe spacing in units of 32us */
3433 __u8 aifs;
3434
3435 /* TX queue to configure */
3436 __u8 txq;
3437 } ap;
3438 struct {
3439 /* Log exponent of max contention period: 0...15 */
3440 __u8 log_cw_max;
3441
3442 /* Log exponent of min contention period: 0...15 */
3443 __u8 log_cw_min;
3444
3445 /* Adaptive interframe spacing in units of 32us */
3446 __u8 aifs;
3447
3448 /* TX queue to configure */
3449 __u8 txq;
3450 } sta;
3451 };
3452 } __packed;
3453
3454 #define MWL8K_SET_EDCA_CW 0x01
3455 #define MWL8K_SET_EDCA_TXOP 0x02
3456 #define MWL8K_SET_EDCA_AIFS 0x04
3457
3458 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3459 MWL8K_SET_EDCA_TXOP | \
3460 MWL8K_SET_EDCA_AIFS)
3461
3462 static int
mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, __u16 cw_min, __u16 cw_max, __u8 aifs, __u16 txop)3463 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3464 __u16 cw_min, __u16 cw_max,
3465 __u8 aifs, __u16 txop)
3466 {
3467 struct mwl8k_priv *priv = hw->priv;
3468 struct mwl8k_cmd_set_edca_params *cmd;
3469 int rc;
3470
3471 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3472 if (cmd == NULL)
3473 return -ENOMEM;
3474
3475 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3476 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3477 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3478 cmd->txop = cpu_to_le16(txop);
3479 if (priv->ap_fw) {
3480 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3481 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3482 cmd->ap.aifs = aifs;
3483 cmd->ap.txq = qnum;
3484 } else {
3485 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3486 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3487 cmd->sta.aifs = aifs;
3488 cmd->sta.txq = qnum;
3489 }
3490
3491 rc = mwl8k_post_cmd(hw, &cmd->header);
3492 kfree(cmd);
3493
3494 return rc;
3495 }
3496
3497 /*
3498 * CMD_SET_WMM_MODE.
3499 */
3500 struct mwl8k_cmd_set_wmm_mode {
3501 struct mwl8k_cmd_pkt header;
3502 __le16 action;
3503 } __packed;
3504
mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)3505 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3506 {
3507 struct mwl8k_priv *priv = hw->priv;
3508 struct mwl8k_cmd_set_wmm_mode *cmd;
3509 int rc;
3510
3511 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3512 if (cmd == NULL)
3513 return -ENOMEM;
3514
3515 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3516 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3517 cmd->action = cpu_to_le16(!!enable);
3518
3519 rc = mwl8k_post_cmd(hw, &cmd->header);
3520 kfree(cmd);
3521
3522 if (!rc)
3523 priv->wmm_enabled = enable;
3524
3525 return rc;
3526 }
3527
3528 /*
3529 * CMD_MIMO_CONFIG.
3530 */
3531 struct mwl8k_cmd_mimo_config {
3532 struct mwl8k_cmd_pkt header;
3533 __le32 action;
3534 __u8 rx_antenna_map;
3535 __u8 tx_antenna_map;
3536 } __packed;
3537
mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)3538 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3539 {
3540 struct mwl8k_cmd_mimo_config *cmd;
3541 int rc;
3542
3543 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3544 if (cmd == NULL)
3545 return -ENOMEM;
3546
3547 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3548 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3549 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3550 cmd->rx_antenna_map = rx;
3551 cmd->tx_antenna_map = tx;
3552
3553 rc = mwl8k_post_cmd(hw, &cmd->header);
3554 kfree(cmd);
3555
3556 return rc;
3557 }
3558
3559 /*
3560 * CMD_USE_FIXED_RATE (STA version).
3561 */
3562 struct mwl8k_cmd_use_fixed_rate_sta {
3563 struct mwl8k_cmd_pkt header;
3564 __le32 action;
3565 __le32 allow_rate_drop;
3566 __le32 num_rates;
3567 struct {
3568 __le32 is_ht_rate;
3569 __le32 enable_retry;
3570 __le32 rate;
3571 __le32 retry_count;
3572 } rate_entry[8];
3573 __le32 rate_type;
3574 __le32 reserved1;
3575 __le32 reserved2;
3576 } __packed;
3577
3578 #define MWL8K_USE_AUTO_RATE 0x0002
3579 #define MWL8K_UCAST_RATE 0
3580
mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)3581 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3582 {
3583 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3584 int rc;
3585
3586 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3587 if (cmd == NULL)
3588 return -ENOMEM;
3589
3590 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3591 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3592 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3593 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3594
3595 rc = mwl8k_post_cmd(hw, &cmd->header);
3596 kfree(cmd);
3597
3598 return rc;
3599 }
3600
3601 /*
3602 * CMD_USE_FIXED_RATE (AP version).
3603 */
3604 struct mwl8k_cmd_use_fixed_rate_ap {
3605 struct mwl8k_cmd_pkt header;
3606 __le32 action;
3607 __le32 allow_rate_drop;
3608 __le32 num_rates;
3609 struct mwl8k_rate_entry_ap {
3610 __le32 is_ht_rate;
3611 __le32 enable_retry;
3612 __le32 rate;
3613 __le32 retry_count;
3614 } rate_entry[4];
3615 u8 multicast_rate;
3616 u8 multicast_rate_type;
3617 u8 management_rate;
3618 } __packed;
3619
3620 static int
mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)3621 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3622 {
3623 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3624 int rc;
3625
3626 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3627 if (cmd == NULL)
3628 return -ENOMEM;
3629
3630 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3631 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3632 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3633 cmd->multicast_rate = mcast;
3634 cmd->management_rate = mgmt;
3635
3636 rc = mwl8k_post_cmd(hw, &cmd->header);
3637 kfree(cmd);
3638
3639 return rc;
3640 }
3641
3642 /*
3643 * CMD_ENABLE_SNIFFER.
3644 */
3645 struct mwl8k_cmd_enable_sniffer {
3646 struct mwl8k_cmd_pkt header;
3647 __le32 action;
3648 } __packed;
3649
mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)3650 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3651 {
3652 struct mwl8k_cmd_enable_sniffer *cmd;
3653 int rc;
3654
3655 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3656 if (cmd == NULL)
3657 return -ENOMEM;
3658
3659 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3660 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3661 cmd->action = cpu_to_le32(!!enable);
3662
3663 rc = mwl8k_post_cmd(hw, &cmd->header);
3664 kfree(cmd);
3665
3666 return rc;
3667 }
3668
3669 struct mwl8k_cmd_update_mac_addr {
3670 struct mwl8k_cmd_pkt header;
3671 union {
3672 struct {
3673 __le16 mac_type;
3674 __u8 mac_addr[ETH_ALEN];
3675 } mbss;
3676 __u8 mac_addr[ETH_ALEN];
3677 };
3678 } __packed;
3679
3680 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3681 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3682 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3683 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3684
mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *mac, bool set)3685 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3686 struct ieee80211_vif *vif, u8 *mac, bool set)
3687 {
3688 struct mwl8k_priv *priv = hw->priv;
3689 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3690 struct mwl8k_cmd_update_mac_addr *cmd;
3691 int mac_type;
3692 int rc;
3693
3694 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3695 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3696 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3697 if (priv->ap_fw)
3698 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3699 else
3700 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3701 else
3702 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3703 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3704 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3705 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3706 else
3707 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3708 }
3709
3710 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3711 if (cmd == NULL)
3712 return -ENOMEM;
3713
3714 if (set)
3715 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3716 else
3717 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3718
3719 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3720 if (priv->ap_fw) {
3721 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3722 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3723 } else {
3724 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3725 }
3726
3727 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3728 kfree(cmd);
3729
3730 return rc;
3731 }
3732
3733 /*
3734 * MWL8K_CMD_SET_MAC_ADDR.
3735 */
mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *mac)3736 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3737 struct ieee80211_vif *vif, u8 *mac)
3738 {
3739 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3740 }
3741
3742 /*
3743 * MWL8K_CMD_DEL_MAC_ADDR.
3744 */
mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *mac)3745 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3746 struct ieee80211_vif *vif, u8 *mac)
3747 {
3748 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3749 }
3750
3751 /*
3752 * CMD_SET_RATEADAPT_MODE.
3753 */
3754 struct mwl8k_cmd_set_rate_adapt_mode {
3755 struct mwl8k_cmd_pkt header;
3756 __le16 action;
3757 __le16 mode;
3758 } __packed;
3759
mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)3760 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3761 {
3762 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3763 int rc;
3764
3765 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3766 if (cmd == NULL)
3767 return -ENOMEM;
3768
3769 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3770 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3771 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3772 cmd->mode = cpu_to_le16(mode);
3773
3774 rc = mwl8k_post_cmd(hw, &cmd->header);
3775 kfree(cmd);
3776
3777 return rc;
3778 }
3779
3780 /*
3781 * CMD_GET_WATCHDOG_BITMAP.
3782 */
3783 struct mwl8k_cmd_get_watchdog_bitmap {
3784 struct mwl8k_cmd_pkt header;
3785 u8 bitmap;
3786 } __packed;
3787
mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)3788 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3789 {
3790 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3791 int rc;
3792
3793 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3794 if (cmd == NULL)
3795 return -ENOMEM;
3796
3797 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3798 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3799
3800 rc = mwl8k_post_cmd(hw, &cmd->header);
3801 if (!rc)
3802 *bitmap = cmd->bitmap;
3803
3804 kfree(cmd);
3805
3806 return rc;
3807 }
3808
3809 #define MWL8K_WMM_QUEUE_NUMBER 3
3810
3811 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3812 u8 idx);
3813
mwl8k_watchdog_ba_events(struct work_struct *work)3814 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3815 {
3816 int rc;
3817 u8 bitmap = 0, stream_index;
3818 struct mwl8k_ampdu_stream *streams;
3819 struct mwl8k_priv *priv =
3820 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3821 struct ieee80211_hw *hw = priv->hw;
3822 int i;
3823 u32 status = 0;
3824
3825 mwl8k_fw_lock(hw);
3826
3827 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3828 if (rc)
3829 goto done;
3830
3831 spin_lock(&priv->stream_lock);
3832
3833 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3834 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3835 if (bitmap & (1 << i)) {
3836 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3837 TOTAL_HW_TX_QUEUES;
3838 streams = &priv->ampdu[stream_index];
3839 if (streams->state == AMPDU_STREAM_ACTIVE) {
3840 ieee80211_stop_tx_ba_session(streams->sta,
3841 streams->tid);
3842 spin_unlock(&priv->stream_lock);
3843 mwl8k_destroy_ba(hw, stream_index);
3844 spin_lock(&priv->stream_lock);
3845 }
3846 }
3847 }
3848
3849 spin_unlock(&priv->stream_lock);
3850 done:
3851 atomic_dec(&priv->watchdog_event_pending);
3852 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3853 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3854 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3855 mwl8k_fw_unlock(hw);
3856 return;
3857 }
3858
3859
3860 /*
3861 * CMD_BSS_START.
3862 */
3863 struct mwl8k_cmd_bss_start {
3864 struct mwl8k_cmd_pkt header;
3865 __le32 enable;
3866 } __packed;
3867
mwl8k_cmd_bss_start(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int enable)3868 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3869 struct ieee80211_vif *vif, int enable)
3870 {
3871 struct mwl8k_cmd_bss_start *cmd;
3872 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3873 struct mwl8k_priv *priv = hw->priv;
3874 int rc;
3875
3876 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3877 return 0;
3878
3879 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3880 return 0;
3881
3882 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3883 if (cmd == NULL)
3884 return -ENOMEM;
3885
3886 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3887 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3888 cmd->enable = cpu_to_le32(enable);
3889
3890 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3891 kfree(cmd);
3892
3893 if (!rc) {
3894 if (enable)
3895 priv->running_bsses |= (1 << mwl8k_vif->macid);
3896 else
3897 priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3898 }
3899 return rc;
3900 }
3901
mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)3902 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3903 {
3904 struct mwl8k_priv *priv = hw->priv;
3905 struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3906 struct ieee80211_vif *vif;
3907
3908 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3909 vif = mwl8k_vif->vif;
3910
3911 if (!(bitmap & (1 << mwl8k_vif->macid)))
3912 continue;
3913
3914 if (vif->type == NL80211_IFTYPE_AP)
3915 mwl8k_cmd_bss_start(hw, vif, enable);
3916 }
3917 }
3918 /*
3919 * CMD_BASTREAM.
3920 */
3921
3922 /*
3923 * UPSTREAM is tx direction
3924 */
3925 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3926 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3927
3928 enum ba_stream_action_type {
3929 MWL8K_BA_CREATE,
3930 MWL8K_BA_UPDATE,
3931 MWL8K_BA_DESTROY,
3932 MWL8K_BA_FLUSH,
3933 MWL8K_BA_CHECK,
3934 };
3935
3936
3937 struct mwl8k_create_ba_stream {
3938 __le32 flags;
3939 __le32 idle_thrs;
3940 __le32 bar_thrs;
3941 __le32 window_size;
3942 u8 peer_mac_addr[6];
3943 u8 dialog_token;
3944 u8 tid;
3945 u8 queue_id;
3946 u8 param_info;
3947 __le32 ba_context;
3948 u8 reset_seq_no_flag;
3949 __le16 curr_seq_no;
3950 u8 sta_src_mac_addr[6];
3951 } __packed;
3952
3953 struct mwl8k_destroy_ba_stream {
3954 __le32 flags;
3955 __le32 ba_context;
3956 } __packed;
3957
3958 struct mwl8k_cmd_bastream {
3959 struct mwl8k_cmd_pkt header;
3960 __le32 action;
3961 union {
3962 struct mwl8k_create_ba_stream create_params;
3963 struct mwl8k_destroy_ba_stream destroy_params;
3964 };
3965 } __packed;
3966
3967 static int
mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, struct ieee80211_vif *vif)3968 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3969 struct ieee80211_vif *vif)
3970 {
3971 struct mwl8k_cmd_bastream *cmd;
3972 int rc;
3973
3974 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3975 if (cmd == NULL)
3976 return -ENOMEM;
3977
3978 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3979 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3980
3981 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3982
3983 cmd->create_params.queue_id = stream->idx;
3984 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3985 ETH_ALEN);
3986 cmd->create_params.tid = stream->tid;
3987
3988 cmd->create_params.flags =
3989 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3990 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3991
3992 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3993
3994 kfree(cmd);
3995
3996 return rc;
3997 }
3998
3999 static int
mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, u8 buf_size, struct ieee80211_vif *vif)4000 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
4001 u8 buf_size, struct ieee80211_vif *vif)
4002 {
4003 struct mwl8k_cmd_bastream *cmd;
4004 int rc;
4005
4006 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4007 if (cmd == NULL)
4008 return -ENOMEM;
4009
4010
4011 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4012 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4013
4014 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
4015
4016 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
4017 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
4018 cmd->create_params.queue_id = stream->idx;
4019
4020 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
4021 cmd->create_params.tid = stream->tid;
4022 cmd->create_params.curr_seq_no = cpu_to_le16(0);
4023 cmd->create_params.reset_seq_no_flag = 1;
4024
4025 cmd->create_params.param_info =
4026 (stream->sta->ht_cap.ampdu_factor &
4027 IEEE80211_HT_AMPDU_PARM_FACTOR) |
4028 ((stream->sta->ht_cap.ampdu_density << 2) &
4029 IEEE80211_HT_AMPDU_PARM_DENSITY);
4030
4031 cmd->create_params.flags =
4032 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
4033 BASTREAM_FLAG_DIRECTION_UPSTREAM);
4034
4035 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4036
4037 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
4038 stream->sta->addr, stream->tid);
4039 kfree(cmd);
4040
4041 return rc;
4042 }
4043
mwl8k_destroy_ba(struct ieee80211_hw *hw, u8 idx)4044 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
4045 u8 idx)
4046 {
4047 struct mwl8k_cmd_bastream *cmd;
4048
4049 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4050 if (cmd == NULL)
4051 return;
4052
4053 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4054 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4055 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
4056
4057 cmd->destroy_params.ba_context = cpu_to_le32(idx);
4058 mwl8k_post_cmd(hw, &cmd->header);
4059
4060 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
4061
4062 kfree(cmd);
4063 }
4064
4065 /*
4066 * CMD_SET_NEW_STN.
4067 */
4068 struct mwl8k_cmd_set_new_stn {
4069 struct mwl8k_cmd_pkt header;
4070 __le16 aid;
4071 __u8 mac_addr[6];
4072 __le16 stn_id;
4073 __le16 action;
4074 __le16 rsvd;
4075 __le32 legacy_rates;
4076 __u8 ht_rates[4];
4077 __le16 cap_info;
4078 __le16 ht_capabilities_info;
4079 __u8 mac_ht_param_info;
4080 __u8 rev;
4081 __u8 control_channel;
4082 __u8 add_channel;
4083 __le16 op_mode;
4084 __le16 stbc;
4085 __u8 add_qos_info;
4086 __u8 is_qos_sta;
4087 __le32 fw_sta_ptr;
4088 } __packed;
4089
4090 #define MWL8K_STA_ACTION_ADD 0
4091 #define MWL8K_STA_ACTION_REMOVE 2
4092
mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)4093 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
4094 struct ieee80211_vif *vif,
4095 struct ieee80211_sta *sta)
4096 {
4097 struct mwl8k_cmd_set_new_stn *cmd;
4098 u32 rates;
4099 int rc;
4100
4101 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4102 if (cmd == NULL)
4103 return -ENOMEM;
4104
4105 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4106 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4107 cmd->aid = cpu_to_le16(sta->aid);
4108 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
4109 cmd->stn_id = cpu_to_le16(sta->aid);
4110 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
4111 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4112 rates = sta->supp_rates[NL80211_BAND_2GHZ];
4113 else
4114 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5;
4115 cmd->legacy_rates = cpu_to_le32(rates);
4116 if (sta->ht_cap.ht_supported) {
4117 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
4118 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
4119 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
4120 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
4121 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
4122 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
4123 ((sta->ht_cap.ampdu_density & 7) << 2);
4124 cmd->is_qos_sta = 1;
4125 }
4126
4127 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4128 kfree(cmd);
4129
4130 return rc;
4131 }
4132
mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, struct ieee80211_vif *vif)4133 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
4134 struct ieee80211_vif *vif)
4135 {
4136 struct mwl8k_cmd_set_new_stn *cmd;
4137 int rc;
4138
4139 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4140 if (cmd == NULL)
4141 return -ENOMEM;
4142
4143 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4144 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4145 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4146
4147 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4148 kfree(cmd);
4149
4150 return rc;
4151 }
4152
mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *addr)4153 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4154 struct ieee80211_vif *vif, u8 *addr)
4155 {
4156 struct mwl8k_cmd_set_new_stn *cmd;
4157 struct mwl8k_priv *priv = hw->priv;
4158 int rc, i;
4159 u8 idx;
4160
4161 spin_lock(&priv->stream_lock);
4162 /* Destroy any active ampdu streams for this sta */
4163 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4164 struct mwl8k_ampdu_stream *s;
4165 s = &priv->ampdu[i];
4166 if (s->state != AMPDU_NO_STREAM) {
4167 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4168 if (s->state == AMPDU_STREAM_ACTIVE) {
4169 idx = s->idx;
4170 spin_unlock(&priv->stream_lock);
4171 mwl8k_destroy_ba(hw, idx);
4172 spin_lock(&priv->stream_lock);
4173 } else if (s->state == AMPDU_STREAM_NEW) {
4174 mwl8k_remove_stream(hw, s);
4175 }
4176 }
4177 }
4178 }
4179
4180 spin_unlock(&priv->stream_lock);
4181
4182 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4183 if (cmd == NULL)
4184 return -ENOMEM;
4185
4186 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4187 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4188 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4189 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4190
4191 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4192 kfree(cmd);
4193
4194 return rc;
4195 }
4196
4197 /*
4198 * CMD_UPDATE_ENCRYPTION.
4199 */
4200
4201 #define MAX_ENCR_KEY_LENGTH 16
4202 #define MIC_KEY_LENGTH 8
4203
4204 struct mwl8k_cmd_update_encryption {
4205 struct mwl8k_cmd_pkt header;
4206
4207 __le32 action;
4208 __le32 reserved;
4209 __u8 mac_addr[6];
4210 __u8 encr_type;
4211
4212 } __packed;
4213
4214 struct mwl8k_cmd_set_key {
4215 struct mwl8k_cmd_pkt header;
4216
4217 __le32 action;
4218 __le32 reserved;
4219 __le16 length;
4220 __le16 key_type_id;
4221 __le32 key_info;
4222 __le32 key_id;
4223 __le16 key_len;
4224 __u8 key_material[MAX_ENCR_KEY_LENGTH];
4225 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4226 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4227 __le16 tkip_rsc_low;
4228 __le32 tkip_rsc_high;
4229 __le16 tkip_tsc_low;
4230 __le32 tkip_tsc_high;
4231 __u8 mac_addr[6];
4232 } __packed;
4233
4234 enum {
4235 MWL8K_ENCR_ENABLE,
4236 MWL8K_ENCR_SET_KEY,
4237 MWL8K_ENCR_REMOVE_KEY,
4238 MWL8K_ENCR_SET_GROUP_KEY,
4239 };
4240
4241 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
4242 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
4243 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
4244 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
4245 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
4246
4247 enum {
4248 MWL8K_ALG_WEP,
4249 MWL8K_ALG_TKIP,
4250 MWL8K_ALG_CCMP,
4251 };
4252
4253 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
4254 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
4255 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
4256 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
4257 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
4258
mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *addr, u8 encr_type)4259 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4260 struct ieee80211_vif *vif,
4261 u8 *addr,
4262 u8 encr_type)
4263 {
4264 struct mwl8k_cmd_update_encryption *cmd;
4265 int rc;
4266
4267 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4268 if (cmd == NULL)
4269 return -ENOMEM;
4270
4271 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4272 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4273 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4274 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4275 cmd->encr_type = encr_type;
4276
4277 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4278 kfree(cmd);
4279
4280 return rc;
4281 }
4282
mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, u8 *addr, struct ieee80211_key_conf *key)4283 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4284 u8 *addr,
4285 struct ieee80211_key_conf *key)
4286 {
4287 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4288 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4289 cmd->length = cpu_to_le16(sizeof(*cmd) -
4290 offsetof(struct mwl8k_cmd_set_key, length));
4291 cmd->key_id = cpu_to_le32(key->keyidx);
4292 cmd->key_len = cpu_to_le16(key->keylen);
4293 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4294
4295 switch (key->cipher) {
4296 case WLAN_CIPHER_SUITE_WEP40:
4297 case WLAN_CIPHER_SUITE_WEP104:
4298 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4299 if (key->keyidx == 0)
4300 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4301
4302 break;
4303 case WLAN_CIPHER_SUITE_TKIP:
4304 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4305 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4306 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4307 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4308 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4309 | MWL8K_KEY_FLAG_TSC_VALID);
4310 break;
4311 case WLAN_CIPHER_SUITE_CCMP:
4312 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4313 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4314 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4315 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4316 break;
4317 default:
4318 return -ENOTSUPP;
4319 }
4320
4321 return 0;
4322 }
4323
mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *addr, struct ieee80211_key_conf *key)4324 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4325 struct ieee80211_vif *vif,
4326 u8 *addr,
4327 struct ieee80211_key_conf *key)
4328 {
4329 struct mwl8k_cmd_set_key *cmd;
4330 int rc;
4331 int keymlen;
4332 u32 action;
4333 u8 idx;
4334 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4335
4336 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4337 if (cmd == NULL)
4338 return -ENOMEM;
4339
4340 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4341 if (rc < 0)
4342 goto done;
4343
4344 idx = key->keyidx;
4345
4346 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4347 action = MWL8K_ENCR_SET_KEY;
4348 else
4349 action = MWL8K_ENCR_SET_GROUP_KEY;
4350
4351 switch (key->cipher) {
4352 case WLAN_CIPHER_SUITE_WEP40:
4353 case WLAN_CIPHER_SUITE_WEP104:
4354 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4355 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4356 sizeof(*key) + key->keylen);
4357 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4358 }
4359
4360 keymlen = key->keylen;
4361 action = MWL8K_ENCR_SET_KEY;
4362 break;
4363 case WLAN_CIPHER_SUITE_TKIP:
4364 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4365 break;
4366 case WLAN_CIPHER_SUITE_CCMP:
4367 keymlen = key->keylen;
4368 break;
4369 default:
4370 rc = -ENOTSUPP;
4371 goto done;
4372 }
4373
4374 memcpy(cmd->key_material, key->key, keymlen);
4375 cmd->action = cpu_to_le32(action);
4376
4377 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4378 done:
4379 kfree(cmd);
4380
4381 return rc;
4382 }
4383
mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *addr, struct ieee80211_key_conf *key)4384 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4385 struct ieee80211_vif *vif,
4386 u8 *addr,
4387 struct ieee80211_key_conf *key)
4388 {
4389 struct mwl8k_cmd_set_key *cmd;
4390 int rc;
4391 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4392
4393 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4394 if (cmd == NULL)
4395 return -ENOMEM;
4396
4397 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4398 if (rc < 0)
4399 goto done;
4400
4401 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4402 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4403 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4404
4405 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4406
4407 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4408 done:
4409 kfree(cmd);
4410
4411 return rc;
4412 }
4413
mwl8k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd_param, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key)4414 static int mwl8k_set_key(struct ieee80211_hw *hw,
4415 enum set_key_cmd cmd_param,
4416 struct ieee80211_vif *vif,
4417 struct ieee80211_sta *sta,
4418 struct ieee80211_key_conf *key)
4419 {
4420 int rc = 0;
4421 u8 encr_type;
4422 u8 *addr;
4423 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4424 struct mwl8k_priv *priv = hw->priv;
4425
4426 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4427 return -EOPNOTSUPP;
4428
4429 if (sta == NULL)
4430 addr = vif->addr;
4431 else
4432 addr = sta->addr;
4433
4434 if (cmd_param == SET_KEY) {
4435 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4436 if (rc)
4437 goto out;
4438
4439 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4440 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4441 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4442 else
4443 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4444
4445 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4446 encr_type);
4447 if (rc)
4448 goto out;
4449
4450 mwl8k_vif->is_hw_crypto_enabled = true;
4451
4452 } else {
4453 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4454
4455 if (rc)
4456 goto out;
4457 }
4458 out:
4459 return rc;
4460 }
4461
4462 /*
4463 * CMD_UPDATE_STADB.
4464 */
4465 struct ewc_ht_info {
4466 __le16 control1;
4467 __le16 control2;
4468 __le16 control3;
4469 } __packed;
4470
4471 struct peer_capability_info {
4472 /* Peer type - AP vs. STA. */
4473 __u8 peer_type;
4474
4475 /* Basic 802.11 capabilities from assoc resp. */
4476 __le16 basic_caps;
4477
4478 /* Set if peer supports 802.11n high throughput (HT). */
4479 __u8 ht_support;
4480
4481 /* Valid if HT is supported. */
4482 __le16 ht_caps;
4483 __u8 extended_ht_caps;
4484 struct ewc_ht_info ewc_info;
4485
4486 /* Legacy rate table. Intersection of our rates and peer rates. */
4487 __u8 legacy_rates[12];
4488
4489 /* HT rate table. Intersection of our rates and peer rates. */
4490 __u8 ht_rates[16];
4491 __u8 pad[16];
4492
4493 /* If set, interoperability mode, no proprietary extensions. */
4494 __u8 interop;
4495 __u8 pad2;
4496 __u8 station_id;
4497 __le16 amsdu_enabled;
4498 } __packed;
4499
4500 struct mwl8k_cmd_update_stadb {
4501 struct mwl8k_cmd_pkt header;
4502
4503 /* See STADB_ACTION_TYPE */
4504 __le32 action;
4505
4506 /* Peer MAC address */
4507 __u8 peer_addr[ETH_ALEN];
4508
4509 __le32 reserved;
4510
4511 /* Peer info - valid during add/update. */
4512 struct peer_capability_info peer_info;
4513 } __packed;
4514
4515 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4516 #define MWL8K_STA_DB_DEL_ENTRY 2
4517
4518 /* Peer Entry flags - used to define the type of the peer node */
4519 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4520
mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)4521 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4522 struct ieee80211_vif *vif,
4523 struct ieee80211_sta *sta)
4524 {
4525 struct mwl8k_cmd_update_stadb *cmd;
4526 struct peer_capability_info *p;
4527 u32 rates;
4528 int rc;
4529
4530 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4531 if (cmd == NULL)
4532 return -ENOMEM;
4533
4534 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4535 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4536 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4537 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4538
4539 p = &cmd->peer_info;
4540 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4541 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4542 p->ht_support = sta->ht_cap.ht_supported;
4543 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4544 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4545 ((sta->ht_cap.ampdu_density & 7) << 2);
4546 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4547 rates = sta->supp_rates[NL80211_BAND_2GHZ];
4548 else
4549 rates = sta->supp_rates[NL80211_BAND_5GHZ] << 5;
4550 legacy_rate_mask_to_array(p->legacy_rates, rates);
4551 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4552 p->interop = 1;
4553 p->amsdu_enabled = 0;
4554
4555 rc = mwl8k_post_cmd(hw, &cmd->header);
4556 if (!rc)
4557 rc = p->station_id;
4558 kfree(cmd);
4559
4560 return rc;
4561 }
4562
mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u8 *addr)4563 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4564 struct ieee80211_vif *vif, u8 *addr)
4565 {
4566 struct mwl8k_cmd_update_stadb *cmd;
4567 int rc;
4568
4569 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4570 if (cmd == NULL)
4571 return -ENOMEM;
4572
4573 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4574 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4575 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4576 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4577
4578 rc = mwl8k_post_cmd(hw, &cmd->header);
4579 kfree(cmd);
4580
4581 return rc;
4582 }
4583
4584
4585 /*
4586 * Interrupt handling.
4587 */
mwl8k_interrupt(int irq, void *dev_id)4588 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4589 {
4590 struct ieee80211_hw *hw = dev_id;
4591 struct mwl8k_priv *priv = hw->priv;
4592 u32 status;
4593
4594 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4595 if (!status)
4596 return IRQ_NONE;
4597
4598 if (status & MWL8K_A2H_INT_TX_DONE) {
4599 status &= ~MWL8K_A2H_INT_TX_DONE;
4600 tasklet_schedule(&priv->poll_tx_task);
4601 }
4602
4603 if (status & MWL8K_A2H_INT_RX_READY) {
4604 status &= ~MWL8K_A2H_INT_RX_READY;
4605 tasklet_schedule(&priv->poll_rx_task);
4606 }
4607
4608 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4609 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4610 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4611
4612 atomic_inc(&priv->watchdog_event_pending);
4613 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4614 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4615 }
4616
4617 if (status)
4618 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4619
4620 if (status & MWL8K_A2H_INT_OPC_DONE) {
4621 if (priv->hostcmd_wait != NULL)
4622 complete(priv->hostcmd_wait);
4623 }
4624
4625 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4626 if (!mutex_is_locked(&priv->fw_mutex) &&
4627 priv->radio_on && priv->pending_tx_pkts)
4628 mwl8k_tx_start(priv);
4629 }
4630
4631 return IRQ_HANDLED;
4632 }
4633
mwl8k_tx_poll(struct tasklet_struct *t)4634 static void mwl8k_tx_poll(struct tasklet_struct *t)
4635 {
4636 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task);
4637 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4638 int limit;
4639 int i;
4640
4641 limit = 32;
4642
4643 spin_lock(&priv->tx_lock);
4644
4645 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4646 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4647
4648 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4649 complete(priv->tx_wait);
4650 priv->tx_wait = NULL;
4651 }
4652
4653 spin_unlock(&priv->tx_lock);
4654
4655 if (limit) {
4656 writel(~MWL8K_A2H_INT_TX_DONE,
4657 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4658 } else {
4659 tasklet_schedule(&priv->poll_tx_task);
4660 }
4661 }
4662
mwl8k_rx_poll(struct tasklet_struct *t)4663 static void mwl8k_rx_poll(struct tasklet_struct *t)
4664 {
4665 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task);
4666 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4667 int limit;
4668
4669 limit = 32;
4670 limit -= rxq_process(hw, 0, limit);
4671 limit -= rxq_refill(hw, 0, limit);
4672
4673 if (limit) {
4674 writel(~MWL8K_A2H_INT_RX_READY,
4675 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4676 } else {
4677 tasklet_schedule(&priv->poll_rx_task);
4678 }
4679 }
4680
4681
4682 /*
4683 * Core driver operations.
4684 */
mwl8k_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb)4685 static void mwl8k_tx(struct ieee80211_hw *hw,
4686 struct ieee80211_tx_control *control,
4687 struct sk_buff *skb)
4688 {
4689 struct mwl8k_priv *priv = hw->priv;
4690 int index = skb_get_queue_mapping(skb);
4691
4692 if (!priv->radio_on) {
4693 wiphy_debug(hw->wiphy,
4694 "dropped TX frame since radio disabled\n");
4695 dev_kfree_skb(skb);
4696 return;
4697 }
4698
4699 mwl8k_txq_xmit(hw, index, control->sta, skb);
4700 }
4701
mwl8k_start(struct ieee80211_hw *hw)4702 static int mwl8k_start(struct ieee80211_hw *hw)
4703 {
4704 struct mwl8k_priv *priv = hw->priv;
4705 int rc;
4706
4707 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4708 IRQF_SHARED, MWL8K_NAME, hw);
4709 if (rc) {
4710 priv->irq = -1;
4711 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4712 return -EIO;
4713 }
4714 priv->irq = priv->pdev->irq;
4715
4716 /* Enable TX reclaim and RX tasklets. */
4717 tasklet_enable(&priv->poll_tx_task);
4718 tasklet_enable(&priv->poll_rx_task);
4719
4720 /* Enable interrupts */
4721 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4722 iowrite32(MWL8K_A2H_EVENTS,
4723 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4724
4725 rc = mwl8k_fw_lock(hw);
4726 if (!rc) {
4727 rc = mwl8k_cmd_radio_enable(hw);
4728
4729 if (!priv->ap_fw) {
4730 if (!rc)
4731 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4732
4733 if (!rc)
4734 rc = mwl8k_cmd_set_pre_scan(hw);
4735
4736 if (!rc)
4737 rc = mwl8k_cmd_set_post_scan(hw,
4738 "\x00\x00\x00\x00\x00\x00");
4739 }
4740
4741 if (!rc)
4742 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4743
4744 if (!rc)
4745 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4746
4747 mwl8k_fw_unlock(hw);
4748 }
4749
4750 if (rc) {
4751 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4752 free_irq(priv->pdev->irq, hw);
4753 priv->irq = -1;
4754 tasklet_disable(&priv->poll_tx_task);
4755 tasklet_disable(&priv->poll_rx_task);
4756 } else {
4757 ieee80211_wake_queues(hw);
4758 }
4759
4760 return rc;
4761 }
4762
mwl8k_stop(struct ieee80211_hw *hw)4763 static void mwl8k_stop(struct ieee80211_hw *hw)
4764 {
4765 struct mwl8k_priv *priv = hw->priv;
4766 int i;
4767
4768 if (!priv->hw_restart_in_progress)
4769 mwl8k_cmd_radio_disable(hw);
4770
4771 ieee80211_stop_queues(hw);
4772
4773 /* Disable interrupts */
4774 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4775 if (priv->irq != -1) {
4776 free_irq(priv->pdev->irq, hw);
4777 priv->irq = -1;
4778 }
4779
4780 /* Stop finalize join worker */
4781 cancel_work_sync(&priv->finalize_join_worker);
4782 cancel_work_sync(&priv->watchdog_ba_handle);
4783 if (priv->beacon_skb != NULL)
4784 dev_kfree_skb(priv->beacon_skb);
4785
4786 /* Stop TX reclaim and RX tasklets. */
4787 tasklet_disable(&priv->poll_tx_task);
4788 tasklet_disable(&priv->poll_rx_task);
4789
4790 /* Return all skbs to mac80211 */
4791 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4792 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4793 }
4794
4795 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4796
mwl8k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)4797 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4798 struct ieee80211_vif *vif)
4799 {
4800 struct mwl8k_priv *priv = hw->priv;
4801 struct mwl8k_vif *mwl8k_vif;
4802 u32 macids_supported;
4803 int macid, rc;
4804 struct mwl8k_device_info *di;
4805
4806 /*
4807 * Reject interface creation if sniffer mode is active, as
4808 * STA operation is mutually exclusive with hardware sniffer
4809 * mode. (Sniffer mode is only used on STA firmware.)
4810 */
4811 if (priv->sniffer_enabled) {
4812 wiphy_info(hw->wiphy,
4813 "unable to create STA interface because sniffer mode is enabled\n");
4814 return -EINVAL;
4815 }
4816
4817 di = priv->device_info;
4818 switch (vif->type) {
4819 case NL80211_IFTYPE_AP:
4820 if (!priv->ap_fw && di->fw_image_ap) {
4821 /* we must load the ap fw to meet this request */
4822 if (!list_empty(&priv->vif_list))
4823 return -EBUSY;
4824 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4825 if (rc)
4826 return rc;
4827 }
4828 macids_supported = priv->ap_macids_supported;
4829 break;
4830 case NL80211_IFTYPE_STATION:
4831 if (priv->ap_fw && di->fw_image_sta) {
4832 if (!list_empty(&priv->vif_list)) {
4833 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4834 "Adding STA interface for WDS");
4835 } else {
4836 /* we must load the sta fw to
4837 * meet this request.
4838 */
4839 rc = mwl8k_reload_firmware(hw,
4840 di->fw_image_sta);
4841 if (rc)
4842 return rc;
4843 }
4844 }
4845 macids_supported = priv->sta_macids_supported;
4846 break;
4847 default:
4848 return -EINVAL;
4849 }
4850
4851 macid = ffs(macids_supported & ~priv->macids_used);
4852 if (!macid--)
4853 return -EBUSY;
4854
4855 /* Setup driver private area. */
4856 mwl8k_vif = MWL8K_VIF(vif);
4857 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4858 mwl8k_vif->vif = vif;
4859 mwl8k_vif->macid = macid;
4860 mwl8k_vif->seqno = 0;
4861 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4862 mwl8k_vif->is_hw_crypto_enabled = false;
4863
4864 /* Set the mac address. */
4865 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4866
4867 if (vif->type == NL80211_IFTYPE_AP)
4868 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4869
4870 priv->macids_used |= 1 << mwl8k_vif->macid;
4871 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4872
4873 return 0;
4874 }
4875
mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)4876 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4877 {
4878 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4879 if (!priv->macids_used)
4880 return;
4881
4882 priv->macids_used &= ~(1 << vif->macid);
4883 list_del(&vif->list);
4884 }
4885
mwl8k_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)4886 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4887 struct ieee80211_vif *vif)
4888 {
4889 struct mwl8k_priv *priv = hw->priv;
4890 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4891
4892 if (vif->type == NL80211_IFTYPE_AP)
4893 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4894
4895 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4896
4897 mwl8k_remove_vif(priv, mwl8k_vif);
4898 }
4899
mwl8k_hw_restart_work(struct work_struct *work)4900 static void mwl8k_hw_restart_work(struct work_struct *work)
4901 {
4902 struct mwl8k_priv *priv =
4903 container_of(work, struct mwl8k_priv, fw_reload);
4904 struct ieee80211_hw *hw = priv->hw;
4905 struct mwl8k_device_info *di;
4906 int rc;
4907
4908 /* If some command is waiting for a response, clear it */
4909 if (priv->hostcmd_wait != NULL) {
4910 complete(priv->hostcmd_wait);
4911 priv->hostcmd_wait = NULL;
4912 }
4913
4914 priv->hw_restart_owner = current;
4915 di = priv->device_info;
4916 mwl8k_fw_lock(hw);
4917
4918 if (priv->ap_fw)
4919 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4920 else
4921 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4922
4923 if (rc)
4924 goto fail;
4925
4926 priv->hw_restart_owner = NULL;
4927 priv->hw_restart_in_progress = false;
4928
4929 /*
4930 * This unlock will wake up the queues and
4931 * also opens the command path for other
4932 * commands
4933 */
4934 mwl8k_fw_unlock(hw);
4935
4936 ieee80211_restart_hw(hw);
4937
4938 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4939
4940 return;
4941 fail:
4942 mwl8k_fw_unlock(hw);
4943
4944 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4945 }
4946
mwl8k_config(struct ieee80211_hw *hw, u32 changed)4947 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4948 {
4949 struct ieee80211_conf *conf = &hw->conf;
4950 struct mwl8k_priv *priv = hw->priv;
4951 int rc;
4952
4953 rc = mwl8k_fw_lock(hw);
4954 if (rc)
4955 return rc;
4956
4957 if (conf->flags & IEEE80211_CONF_IDLE)
4958 rc = mwl8k_cmd_radio_disable(hw);
4959 else
4960 rc = mwl8k_cmd_radio_enable(hw);
4961 if (rc)
4962 goto out;
4963
4964 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4965 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4966 if (rc)
4967 goto out;
4968 }
4969
4970 if (conf->power_level > 18)
4971 conf->power_level = 18;
4972
4973 if (priv->ap_fw) {
4974
4975 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4976 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4977 if (rc)
4978 goto out;
4979 }
4980
4981
4982 } else {
4983 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4984 if (rc)
4985 goto out;
4986 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4987 }
4988
4989 out:
4990 mwl8k_fw_unlock(hw);
4991
4992 return rc;
4993 }
4994
4995 static void
mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed)4996 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4997 struct ieee80211_bss_conf *info, u32 changed)
4998 {
4999 struct mwl8k_priv *priv = hw->priv;
5000 u32 ap_legacy_rates = 0;
5001 u8 ap_mcs_rates[16];
5002 int rc;
5003
5004 if (mwl8k_fw_lock(hw))
5005 return;
5006
5007 /*
5008 * No need to capture a beacon if we're no longer associated.
5009 */
5010 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
5011 priv->capture_beacon = false;
5012
5013 /*
5014 * Get the AP's legacy and MCS rates.
5015 */
5016 if (vif->bss_conf.assoc) {
5017 struct ieee80211_sta *ap;
5018
5019 rcu_read_lock();
5020
5021 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
5022 if (ap == NULL) {
5023 rcu_read_unlock();
5024 goto out;
5025 }
5026
5027 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) {
5028 ap_legacy_rates = ap->supp_rates[NL80211_BAND_2GHZ];
5029 } else {
5030 ap_legacy_rates =
5031 ap->supp_rates[NL80211_BAND_5GHZ] << 5;
5032 }
5033 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
5034
5035 rcu_read_unlock();
5036
5037 if (changed & BSS_CHANGED_ASSOC) {
5038 if (!priv->ap_fw) {
5039 rc = mwl8k_cmd_set_rate(hw, vif,
5040 ap_legacy_rates,
5041 ap_mcs_rates);
5042 if (rc)
5043 goto out;
5044
5045 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
5046 if (rc)
5047 goto out;
5048 } else {
5049 int idx;
5050 int rate;
5051
5052 /* Use AP firmware specific rate command.
5053 */
5054 idx = ffs(vif->bss_conf.basic_rates);
5055 if (idx)
5056 idx--;
5057
5058 if (hw->conf.chandef.chan->band ==
5059 NL80211_BAND_2GHZ)
5060 rate = mwl8k_rates_24[idx].hw_value;
5061 else
5062 rate = mwl8k_rates_50[idx].hw_value;
5063
5064 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5065 }
5066 }
5067 }
5068
5069 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5070 rc = mwl8k_set_radio_preamble(hw,
5071 vif->bss_conf.use_short_preamble);
5072 if (rc)
5073 goto out;
5074 }
5075
5076 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
5077 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
5078 if (rc)
5079 goto out;
5080 }
5081
5082 if (vif->bss_conf.assoc && !priv->ap_fw &&
5083 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
5084 BSS_CHANGED_HT))) {
5085 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
5086 if (rc)
5087 goto out;
5088 }
5089
5090 if (vif->bss_conf.assoc &&
5091 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
5092 /*
5093 * Finalize the join. Tell rx handler to process
5094 * next beacon from our BSSID.
5095 */
5096 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
5097 priv->capture_beacon = true;
5098 }
5099
5100 out:
5101 mwl8k_fw_unlock(hw);
5102 }
5103
5104 static void
mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed)5105 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5106 struct ieee80211_bss_conf *info, u32 changed)
5107 {
5108 int rc;
5109
5110 if (mwl8k_fw_lock(hw))
5111 return;
5112
5113 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5114 rc = mwl8k_set_radio_preamble(hw,
5115 vif->bss_conf.use_short_preamble);
5116 if (rc)
5117 goto out;
5118 }
5119
5120 if (changed & BSS_CHANGED_BASIC_RATES) {
5121 int idx;
5122 int rate;
5123
5124 /*
5125 * Use lowest supported basic rate for multicasts
5126 * and management frames (such as probe responses --
5127 * beacons will always go out at 1 Mb/s).
5128 */
5129 idx = ffs(vif->bss_conf.basic_rates);
5130 if (idx)
5131 idx--;
5132
5133 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
5134 rate = mwl8k_rates_24[idx].hw_value;
5135 else
5136 rate = mwl8k_rates_50[idx].hw_value;
5137
5138 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5139 }
5140
5141 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
5142 struct sk_buff *skb;
5143
5144 skb = ieee80211_beacon_get(hw, vif);
5145 if (skb != NULL) {
5146 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5147 kfree_skb(skb);
5148 }
5149 }
5150
5151 if (changed & BSS_CHANGED_BEACON_ENABLED)
5152 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5153
5154 out:
5155 mwl8k_fw_unlock(hw);
5156 }
5157
5158 static void
mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed)5159 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5160 struct ieee80211_bss_conf *info, u32 changed)
5161 {
5162 if (vif->type == NL80211_IFTYPE_STATION)
5163 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5164 if (vif->type == NL80211_IFTYPE_AP)
5165 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5166 }
5167
mwl8k_prepare_multicast(struct ieee80211_hw *hw, struct netdev_hw_addr_list *mc_list)5168 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5169 struct netdev_hw_addr_list *mc_list)
5170 {
5171 struct mwl8k_cmd_pkt *cmd;
5172
5173 /*
5174 * Synthesize and return a command packet that programs the
5175 * hardware multicast address filter. At this point we don't
5176 * know whether FIF_ALLMULTI is being requested, but if it is,
5177 * we'll end up throwing this packet away and creating a new
5178 * one in mwl8k_configure_filter().
5179 */
5180 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5181
5182 return (unsigned long)cmd;
5183 }
5184
5185 static int
mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags)5186 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5187 unsigned int changed_flags,
5188 unsigned int *total_flags)
5189 {
5190 struct mwl8k_priv *priv = hw->priv;
5191
5192 /*
5193 * Hardware sniffer mode is mutually exclusive with STA
5194 * operation, so refuse to enable sniffer mode if a STA
5195 * interface is active.
5196 */
5197 if (!list_empty(&priv->vif_list)) {
5198 if (net_ratelimit())
5199 wiphy_info(hw->wiphy,
5200 "not enabling sniffer mode because STA interface is active\n");
5201 return 0;
5202 }
5203
5204 if (!priv->sniffer_enabled) {
5205 if (mwl8k_cmd_enable_sniffer(hw, 1))
5206 return 0;
5207 priv->sniffer_enabled = true;
5208 }
5209
5210 *total_flags &= FIF_ALLMULTI |
5211 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5212 FIF_OTHER_BSS;
5213
5214 return 1;
5215 }
5216
mwl8k_first_vif(struct mwl8k_priv *priv)5217 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5218 {
5219 if (!list_empty(&priv->vif_list))
5220 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5221
5222 return NULL;
5223 }
5224
mwl8k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast)5225 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5226 unsigned int changed_flags,
5227 unsigned int *total_flags,
5228 u64 multicast)
5229 {
5230 struct mwl8k_priv *priv = hw->priv;
5231 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5232
5233 /*
5234 * AP firmware doesn't allow fine-grained control over
5235 * the receive filter.
5236 */
5237 if (priv->ap_fw) {
5238 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5239 kfree(cmd);
5240 return;
5241 }
5242
5243 /*
5244 * Enable hardware sniffer mode if FIF_CONTROL or
5245 * FIF_OTHER_BSS is requested.
5246 */
5247 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5248 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5249 kfree(cmd);
5250 return;
5251 }
5252
5253 /* Clear unsupported feature flags */
5254 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5255
5256 if (mwl8k_fw_lock(hw)) {
5257 kfree(cmd);
5258 return;
5259 }
5260
5261 if (priv->sniffer_enabled) {
5262 mwl8k_cmd_enable_sniffer(hw, 0);
5263 priv->sniffer_enabled = false;
5264 }
5265
5266 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5267 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5268 /*
5269 * Disable the BSS filter.
5270 */
5271 mwl8k_cmd_set_pre_scan(hw);
5272 } else {
5273 struct mwl8k_vif *mwl8k_vif;
5274 const u8 *bssid;
5275
5276 /*
5277 * Enable the BSS filter.
5278 *
5279 * If there is an active STA interface, use that
5280 * interface's BSSID, otherwise use a dummy one
5281 * (where the OUI part needs to be nonzero for
5282 * the BSSID to be accepted by POST_SCAN).
5283 */
5284 mwl8k_vif = mwl8k_first_vif(priv);
5285 if (mwl8k_vif != NULL)
5286 bssid = mwl8k_vif->vif->bss_conf.bssid;
5287 else
5288 bssid = "\x01\x00\x00\x00\x00\x00";
5289
5290 mwl8k_cmd_set_post_scan(hw, bssid);
5291 }
5292 }
5293
5294 /*
5295 * If FIF_ALLMULTI is being requested, throw away the command
5296 * packet that ->prepare_multicast() built and replace it with
5297 * a command packet that enables reception of all multicast
5298 * packets.
5299 */
5300 if (*total_flags & FIF_ALLMULTI) {
5301 kfree(cmd);
5302 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5303 }
5304
5305 if (cmd != NULL) {
5306 mwl8k_post_cmd(hw, cmd);
5307 kfree(cmd);
5308 }
5309
5310 mwl8k_fw_unlock(hw);
5311 }
5312
mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)5313 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5314 {
5315 return mwl8k_cmd_set_rts_threshold(hw, value);
5316 }
5317
mwl8k_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)5318 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5319 struct ieee80211_vif *vif,
5320 struct ieee80211_sta *sta)
5321 {
5322 struct mwl8k_priv *priv = hw->priv;
5323
5324 if (priv->ap_fw)
5325 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5326 else
5327 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5328 }
5329
mwl8k_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)5330 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5331 struct ieee80211_vif *vif,
5332 struct ieee80211_sta *sta)
5333 {
5334 struct mwl8k_priv *priv = hw->priv;
5335 int ret;
5336 int i;
5337 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5338 struct ieee80211_key_conf *key;
5339
5340 if (!priv->ap_fw) {
5341 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5342 if (ret >= 0) {
5343 MWL8K_STA(sta)->peer_id = ret;
5344 if (sta->ht_cap.ht_supported)
5345 MWL8K_STA(sta)->is_ampdu_allowed = true;
5346 ret = 0;
5347 }
5348
5349 } else {
5350 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5351 }
5352
5353 for (i = 0; i < NUM_WEP_KEYS; i++) {
5354 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5355 if (mwl8k_vif->wep_key_conf[i].enabled)
5356 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5357 }
5358 return ret;
5359 }
5360
mwl8k_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, const struct ieee80211_tx_queue_params *params)5361 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5362 struct ieee80211_vif *vif, u16 queue,
5363 const struct ieee80211_tx_queue_params *params)
5364 {
5365 struct mwl8k_priv *priv = hw->priv;
5366 int rc;
5367
5368 rc = mwl8k_fw_lock(hw);
5369 if (!rc) {
5370 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5371 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5372
5373 if (!priv->wmm_enabled)
5374 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5375
5376 if (!rc) {
5377 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5378 rc = mwl8k_cmd_set_edca_params(hw, q,
5379 params->cw_min,
5380 params->cw_max,
5381 params->aifs,
5382 params->txop);
5383 }
5384
5385 mwl8k_fw_unlock(hw);
5386 }
5387
5388 return rc;
5389 }
5390
mwl8k_get_stats(struct ieee80211_hw *hw, struct ieee80211_low_level_stats *stats)5391 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5392 struct ieee80211_low_level_stats *stats)
5393 {
5394 return mwl8k_cmd_get_stat(hw, stats);
5395 }
5396
mwl8k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey)5397 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5398 struct survey_info *survey)
5399 {
5400 struct mwl8k_priv *priv = hw->priv;
5401 struct ieee80211_conf *conf = &hw->conf;
5402 struct ieee80211_supported_band *sband;
5403
5404 if (priv->ap_fw) {
5405 sband = hw->wiphy->bands[NL80211_BAND_2GHZ];
5406
5407 if (sband && idx >= sband->n_channels) {
5408 idx -= sband->n_channels;
5409 sband = NULL;
5410 }
5411
5412 if (!sband)
5413 sband = hw->wiphy->bands[NL80211_BAND_5GHZ];
5414
5415 if (!sband || idx >= sband->n_channels)
5416 return -ENOENT;
5417
5418 memcpy(survey, &priv->survey[idx], sizeof(*survey));
5419 survey->channel = &sband->channels[idx];
5420
5421 return 0;
5422 }
5423
5424 if (idx != 0)
5425 return -ENOENT;
5426
5427 survey->channel = conf->chandef.chan;
5428 survey->filled = SURVEY_INFO_NOISE_DBM;
5429 survey->noise = priv->noise;
5430
5431 return 0;
5432 }
5433
5434 #define MAX_AMPDU_ATTEMPTS 5
5435
5436 static int
mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_ampdu_params *params)5437 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5438 struct ieee80211_ampdu_params *params)
5439 {
5440 struct ieee80211_sta *sta = params->sta;
5441 enum ieee80211_ampdu_mlme_action action = params->action;
5442 u16 tid = params->tid;
5443 u16 *ssn = ¶ms->ssn;
5444 u8 buf_size = params->buf_size;
5445 int i, rc = 0;
5446 struct mwl8k_priv *priv = hw->priv;
5447 struct mwl8k_ampdu_stream *stream;
5448 u8 *addr = sta->addr, idx;
5449 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5450
5451 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
5452 return -ENOTSUPP;
5453
5454 spin_lock(&priv->stream_lock);
5455 stream = mwl8k_lookup_stream(hw, addr, tid);
5456
5457 switch (action) {
5458 case IEEE80211_AMPDU_RX_START:
5459 case IEEE80211_AMPDU_RX_STOP:
5460 break;
5461 case IEEE80211_AMPDU_TX_START:
5462 /* By the time we get here the hw queues may contain outgoing
5463 * packets for this RA/TID that are not part of this BA
5464 * session. The hw will assign sequence numbers to these
5465 * packets as they go out. So if we query the hw for its next
5466 * sequence number and use that for the SSN here, it may end up
5467 * being wrong, which will lead to sequence number mismatch at
5468 * the recipient. To avoid this, we reset the sequence number
5469 * to O for the first MPDU in this BA stream.
5470 */
5471 *ssn = 0;
5472 if (stream == NULL) {
5473 /* This means that somebody outside this driver called
5474 * ieee80211_start_tx_ba_session. This is unexpected
5475 * because we do our own rate control. Just warn and
5476 * move on.
5477 */
5478 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5479 "Proceeding anyway.\n", __func__);
5480 stream = mwl8k_add_stream(hw, sta, tid);
5481 }
5482 if (stream == NULL) {
5483 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5484 rc = -EBUSY;
5485 break;
5486 }
5487 stream->state = AMPDU_STREAM_IN_PROGRESS;
5488
5489 /* Release the lock before we do the time consuming stuff */
5490 spin_unlock(&priv->stream_lock);
5491 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5492
5493 /* Check if link is still valid */
5494 if (!sta_info->is_ampdu_allowed) {
5495 spin_lock(&priv->stream_lock);
5496 mwl8k_remove_stream(hw, stream);
5497 spin_unlock(&priv->stream_lock);
5498 return -EBUSY;
5499 }
5500
5501 rc = mwl8k_check_ba(hw, stream, vif);
5502
5503 /* If HW restart is in progress mwl8k_post_cmd will
5504 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5505 * such cases
5506 */
5507 if (!rc || rc == -EBUSY)
5508 break;
5509 /*
5510 * HW queues take time to be flushed, give them
5511 * sufficient time
5512 */
5513
5514 msleep(1000);
5515 }
5516 spin_lock(&priv->stream_lock);
5517 if (rc) {
5518 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5519 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5520 mwl8k_remove_stream(hw, stream);
5521 rc = -EBUSY;
5522 break;
5523 }
5524 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE;
5525 break;
5526 case IEEE80211_AMPDU_TX_STOP_CONT:
5527 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5528 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5529 if (stream) {
5530 if (stream->state == AMPDU_STREAM_ACTIVE) {
5531 idx = stream->idx;
5532 spin_unlock(&priv->stream_lock);
5533 mwl8k_destroy_ba(hw, idx);
5534 spin_lock(&priv->stream_lock);
5535 }
5536 mwl8k_remove_stream(hw, stream);
5537 }
5538 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5539 break;
5540 case IEEE80211_AMPDU_TX_OPERATIONAL:
5541 BUG_ON(stream == NULL);
5542 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5543 spin_unlock(&priv->stream_lock);
5544 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5545 spin_lock(&priv->stream_lock);
5546 if (!rc)
5547 stream->state = AMPDU_STREAM_ACTIVE;
5548 else {
5549 idx = stream->idx;
5550 spin_unlock(&priv->stream_lock);
5551 mwl8k_destroy_ba(hw, idx);
5552 spin_lock(&priv->stream_lock);
5553 wiphy_debug(hw->wiphy,
5554 "Failed adding stream for sta %pM tid %d\n",
5555 addr, tid);
5556 mwl8k_remove_stream(hw, stream);
5557 }
5558 break;
5559
5560 default:
5561 rc = -ENOTSUPP;
5562 }
5563
5564 spin_unlock(&priv->stream_lock);
5565 return rc;
5566 }
5567
mwl8k_sw_scan_start(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const u8 *mac_addr)5568 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
5569 struct ieee80211_vif *vif,
5570 const u8 *mac_addr)
5571 {
5572 struct mwl8k_priv *priv = hw->priv;
5573 u8 tmp;
5574
5575 if (!priv->ap_fw)
5576 return;
5577
5578 /* clear all stats */
5579 priv->channel_time = 0;
5580 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5581 ioread32(priv->regs + NOK_CCA_CNT_REG);
5582 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5583
5584 priv->sw_scan_start = true;
5585 }
5586
mwl8k_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif)5587 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
5588 struct ieee80211_vif *vif)
5589 {
5590 struct mwl8k_priv *priv = hw->priv;
5591 u8 tmp;
5592
5593 if (!priv->ap_fw)
5594 return;
5595
5596 priv->sw_scan_start = false;
5597
5598 /* clear all stats */
5599 priv->channel_time = 0;
5600 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5601 ioread32(priv->regs + NOK_CCA_CNT_REG);
5602 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5603 }
5604
5605 static const struct ieee80211_ops mwl8k_ops = {
5606 .tx = mwl8k_tx,
5607 .start = mwl8k_start,
5608 .stop = mwl8k_stop,
5609 .add_interface = mwl8k_add_interface,
5610 .remove_interface = mwl8k_remove_interface,
5611 .config = mwl8k_config,
5612 .bss_info_changed = mwl8k_bss_info_changed,
5613 .prepare_multicast = mwl8k_prepare_multicast,
5614 .configure_filter = mwl8k_configure_filter,
5615 .set_key = mwl8k_set_key,
5616 .set_rts_threshold = mwl8k_set_rts_threshold,
5617 .sta_add = mwl8k_sta_add,
5618 .sta_remove = mwl8k_sta_remove,
5619 .conf_tx = mwl8k_conf_tx,
5620 .get_stats = mwl8k_get_stats,
5621 .get_survey = mwl8k_get_survey,
5622 .ampdu_action = mwl8k_ampdu_action,
5623 .sw_scan_start = mwl8k_sw_scan_start,
5624 .sw_scan_complete = mwl8k_sw_scan_complete,
5625 };
5626
mwl8k_finalize_join_worker(struct work_struct *work)5627 static void mwl8k_finalize_join_worker(struct work_struct *work)
5628 {
5629 struct mwl8k_priv *priv =
5630 container_of(work, struct mwl8k_priv, finalize_join_worker);
5631 struct sk_buff *skb = priv->beacon_skb;
5632 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5633 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5634 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5635 mgmt->u.beacon.variable, len);
5636 int dtim_period = 1;
5637
5638 if (tim && tim[1] >= 2)
5639 dtim_period = tim[3];
5640
5641 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5642
5643 dev_kfree_skb(skb);
5644 priv->beacon_skb = NULL;
5645 }
5646
5647 enum {
5648 MWL8363 = 0,
5649 MWL8687,
5650 MWL8366,
5651 MWL8764,
5652 };
5653
5654 #define MWL8K_8366_AP_FW_API 3
5655 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5656 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5657
5658 #define MWL8K_8764_AP_FW_API 1
5659 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5660 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5661
5662 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5663 [MWL8363] = {
5664 .part_name = "88w8363",
5665 .helper_image = "mwl8k/helper_8363.fw",
5666 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5667 },
5668 [MWL8687] = {
5669 .part_name = "88w8687",
5670 .helper_image = "mwl8k/helper_8687.fw",
5671 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5672 },
5673 [MWL8366] = {
5674 .part_name = "88w8366",
5675 .helper_image = "mwl8k/helper_8366.fw",
5676 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5677 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5678 .fw_api_ap = MWL8K_8366_AP_FW_API,
5679 .ap_rxd_ops = &rxd_ap_ops,
5680 },
5681 [MWL8764] = {
5682 .part_name = "88w8764",
5683 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5684 .fw_api_ap = MWL8K_8764_AP_FW_API,
5685 .ap_rxd_ops = &rxd_ap_ops,
5686 },
5687 };
5688
5689 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5690 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5691 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5692 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5693 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5694 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5695 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5696
5697 static const struct pci_device_id mwl8k_pci_id_table[] = {
5698 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5699 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5700 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5701 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5702 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5703 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5704 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5705 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5706 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5707 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5708 { },
5709 };
5710 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5711
mwl8k_request_alt_fw(struct mwl8k_priv *priv)5712 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5713 {
5714 int rc;
5715 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5716 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5717 priv->fw_pref, priv->fw_alt);
5718 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5719 if (rc) {
5720 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5721 pci_name(priv->pdev), priv->fw_alt);
5722 return rc;
5723 }
5724 return 0;
5725 }
5726
5727 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
mwl8k_fw_state_machine(const struct firmware *fw, void *context)5728 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5729 {
5730 struct mwl8k_priv *priv = context;
5731 struct mwl8k_device_info *di = priv->device_info;
5732 int rc;
5733
5734 switch (priv->fw_state) {
5735 case FW_STATE_INIT:
5736 if (!fw) {
5737 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5738 pci_name(priv->pdev), di->helper_image);
5739 goto fail;
5740 }
5741 priv->fw_helper = fw;
5742 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5743 true);
5744 if (rc && priv->fw_alt) {
5745 rc = mwl8k_request_alt_fw(priv);
5746 if (rc)
5747 goto fail;
5748 priv->fw_state = FW_STATE_LOADING_ALT;
5749 } else if (rc)
5750 goto fail;
5751 else
5752 priv->fw_state = FW_STATE_LOADING_PREF;
5753 break;
5754
5755 case FW_STATE_LOADING_PREF:
5756 if (!fw) {
5757 if (priv->fw_alt) {
5758 rc = mwl8k_request_alt_fw(priv);
5759 if (rc)
5760 goto fail;
5761 priv->fw_state = FW_STATE_LOADING_ALT;
5762 } else
5763 goto fail;
5764 } else {
5765 priv->fw_ucode = fw;
5766 rc = mwl8k_firmware_load_success(priv);
5767 if (rc)
5768 goto fail;
5769 else
5770 complete(&priv->firmware_loading_complete);
5771 }
5772 break;
5773
5774 case FW_STATE_LOADING_ALT:
5775 if (!fw) {
5776 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5777 pci_name(priv->pdev), di->helper_image);
5778 goto fail;
5779 }
5780 priv->fw_ucode = fw;
5781 rc = mwl8k_firmware_load_success(priv);
5782 if (rc)
5783 goto fail;
5784 else
5785 complete(&priv->firmware_loading_complete);
5786 break;
5787
5788 default:
5789 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5790 MWL8K_NAME, priv->fw_state);
5791 BUG_ON(1);
5792 }
5793
5794 return;
5795
5796 fail:
5797 priv->fw_state = FW_STATE_ERROR;
5798 complete(&priv->firmware_loading_complete);
5799 mwl8k_release_firmware(priv);
5800 device_release_driver(&priv->pdev->dev);
5801 }
5802
5803 #define MAX_RESTART_ATTEMPTS 1
mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, bool nowait)5804 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5805 bool nowait)
5806 {
5807 struct mwl8k_priv *priv = hw->priv;
5808 int rc;
5809 int count = MAX_RESTART_ATTEMPTS;
5810
5811 retry:
5812 /* Reset firmware and hardware */
5813 mwl8k_hw_reset(priv);
5814
5815 /* Ask userland hotplug daemon for the device firmware */
5816 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5817 if (rc) {
5818 wiphy_err(hw->wiphy, "Firmware files not found\n");
5819 return rc;
5820 }
5821
5822 if (nowait)
5823 return rc;
5824
5825 /* Load firmware into hardware */
5826 rc = mwl8k_load_firmware(hw);
5827 if (rc)
5828 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5829
5830 /* Reclaim memory once firmware is successfully loaded */
5831 mwl8k_release_firmware(priv);
5832
5833 if (rc && count) {
5834 /* FW did not start successfully;
5835 * lets try one more time
5836 */
5837 count--;
5838 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5839 msleep(20);
5840 goto retry;
5841 }
5842
5843 return rc;
5844 }
5845
mwl8k_init_txqs(struct ieee80211_hw *hw)5846 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5847 {
5848 struct mwl8k_priv *priv = hw->priv;
5849 int rc = 0;
5850 int i;
5851
5852 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5853 rc = mwl8k_txq_init(hw, i);
5854 if (rc)
5855 break;
5856 if (priv->ap_fw)
5857 iowrite32(priv->txq[i].txd_dma,
5858 priv->sram + priv->txq_offset[i]);
5859 }
5860 return rc;
5861 }
5862
5863 /* initialize hw after successfully loading a firmware image */
mwl8k_probe_hw(struct ieee80211_hw *hw)5864 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5865 {
5866 struct mwl8k_priv *priv = hw->priv;
5867 int rc = 0;
5868 int i;
5869
5870 if (priv->ap_fw) {
5871 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5872 if (priv->rxd_ops == NULL) {
5873 wiphy_err(hw->wiphy,
5874 "Driver does not have AP firmware image support for this hardware\n");
5875 rc = -ENOENT;
5876 goto err_stop_firmware;
5877 }
5878 } else {
5879 priv->rxd_ops = &rxd_sta_ops;
5880 }
5881
5882 priv->sniffer_enabled = false;
5883 priv->wmm_enabled = false;
5884 priv->pending_tx_pkts = 0;
5885 atomic_set(&priv->watchdog_event_pending, 0);
5886
5887 rc = mwl8k_rxq_init(hw, 0);
5888 if (rc)
5889 goto err_stop_firmware;
5890 rxq_refill(hw, 0, INT_MAX);
5891
5892 /* For the sta firmware, we need to know the dma addresses of tx queues
5893 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5894 * prior to issuing this command. But for the AP case, we learn the
5895 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5896 * case we must initialize the tx queues after.
5897 */
5898 priv->num_ampdu_queues = 0;
5899 if (!priv->ap_fw) {
5900 rc = mwl8k_init_txqs(hw);
5901 if (rc)
5902 goto err_free_queues;
5903 }
5904
5905 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5906 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5907 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5908 MWL8K_A2H_INT_BA_WATCHDOG,
5909 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5910 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5911 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5912
5913 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5914 IRQF_SHARED, MWL8K_NAME, hw);
5915 if (rc) {
5916 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5917 goto err_free_queues;
5918 }
5919
5920 /*
5921 * When hw restart is requested,
5922 * mac80211 will take care of clearing
5923 * the ampdu streams, so do not clear
5924 * the ampdu state here
5925 */
5926 if (!priv->hw_restart_in_progress)
5927 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5928
5929 /*
5930 * Temporarily enable interrupts. Initial firmware host
5931 * commands use interrupts and avoid polling. Disable
5932 * interrupts when done.
5933 */
5934 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5935
5936 /* Get config data, mac addrs etc */
5937 if (priv->ap_fw) {
5938 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5939 if (!rc)
5940 rc = mwl8k_init_txqs(hw);
5941 if (!rc)
5942 rc = mwl8k_cmd_set_hw_spec(hw);
5943 } else {
5944 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5945 }
5946 if (rc) {
5947 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5948 goto err_free_irq;
5949 }
5950
5951 /* Turn radio off */
5952 rc = mwl8k_cmd_radio_disable(hw);
5953 if (rc) {
5954 wiphy_err(hw->wiphy, "Cannot disable\n");
5955 goto err_free_irq;
5956 }
5957
5958 /* Clear MAC address */
5959 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5960 if (rc) {
5961 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5962 goto err_free_irq;
5963 }
5964
5965 /* Configure Antennas */
5966 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5967 if (rc)
5968 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5969 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5970 if (rc)
5971 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5972
5973
5974 /* Disable interrupts */
5975 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5976 free_irq(priv->pdev->irq, hw);
5977
5978 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5979 priv->device_info->part_name,
5980 priv->hw_rev, hw->wiphy->perm_addr,
5981 priv->ap_fw ? "AP" : "STA",
5982 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5983 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5984
5985 return 0;
5986
5987 err_free_irq:
5988 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5989 free_irq(priv->pdev->irq, hw);
5990
5991 err_free_queues:
5992 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5993 mwl8k_txq_deinit(hw, i);
5994 mwl8k_rxq_deinit(hw, 0);
5995
5996 err_stop_firmware:
5997 mwl8k_hw_reset(priv);
5998
5999 return rc;
6000 }
6001
6002 /*
6003 * invoke mwl8k_reload_firmware to change the firmware image after the device
6004 * has already been registered
6005 */
mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)6006 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
6007 {
6008 int i, rc = 0;
6009 struct mwl8k_priv *priv = hw->priv;
6010 struct mwl8k_vif *vif, *tmp_vif;
6011
6012 mwl8k_stop(hw);
6013 mwl8k_rxq_deinit(hw, 0);
6014
6015 /*
6016 * All the existing interfaces are re-added by the ieee80211_reconfig;
6017 * which means driver should remove existing interfaces before calling
6018 * ieee80211_restart_hw
6019 */
6020 if (priv->hw_restart_in_progress)
6021 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6022 mwl8k_remove_vif(priv, vif);
6023
6024 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6025 mwl8k_txq_deinit(hw, i);
6026
6027 rc = mwl8k_init_firmware(hw, fw_image, false);
6028 if (rc)
6029 goto fail;
6030
6031 rc = mwl8k_probe_hw(hw);
6032 if (rc)
6033 goto fail;
6034
6035 if (priv->hw_restart_in_progress)
6036 return rc;
6037
6038 rc = mwl8k_start(hw);
6039 if (rc)
6040 goto fail;
6041
6042 rc = mwl8k_config(hw, ~0);
6043 if (rc)
6044 goto fail;
6045
6046 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6047 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
6048 if (rc)
6049 goto fail;
6050 }
6051
6052 return rc;
6053
6054 fail:
6055 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6056 return rc;
6057 }
6058
6059 static const struct ieee80211_iface_limit ap_if_limits[] = {
6060 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
6061 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
6062 };
6063
6064 static const struct ieee80211_iface_combination ap_if_comb = {
6065 .limits = ap_if_limits,
6066 .n_limits = ARRAY_SIZE(ap_if_limits),
6067 .max_interfaces = 8,
6068 .num_different_channels = 1,
6069 };
6070
6071
mwl8k_firmware_load_success(struct mwl8k_priv *priv)6072 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6073 {
6074 struct ieee80211_hw *hw = priv->hw;
6075 int i, rc;
6076
6077 rc = mwl8k_load_firmware(hw);
6078 mwl8k_release_firmware(priv);
6079 if (rc) {
6080 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6081 return rc;
6082 }
6083
6084 /*
6085 * Extra headroom is the size of the required DMA header
6086 * minus the size of the smallest 802.11 frame (CTS frame).
6087 */
6088 hw->extra_tx_headroom =
6089 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6090
6091 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6092
6093 hw->queues = MWL8K_TX_WMM_QUEUES;
6094
6095 /* Set rssi values to dBm */
6096 ieee80211_hw_set(hw, SIGNAL_DBM);
6097 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
6098
6099 /*
6100 * Ask mac80211 to not to trigger PS mode
6101 * based on PM bit of incoming frames.
6102 */
6103 if (priv->ap_fw)
6104 ieee80211_hw_set(hw, AP_LINK_PS);
6105
6106 hw->vif_data_size = sizeof(struct mwl8k_vif);
6107 hw->sta_data_size = sizeof(struct mwl8k_sta);
6108
6109 priv->macids_used = 0;
6110 INIT_LIST_HEAD(&priv->vif_list);
6111
6112 /* Set default radio state and preamble */
6113 priv->radio_on = false;
6114 priv->radio_short_preamble = false;
6115
6116 /* Finalize join worker */
6117 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6118 /* Handle watchdog ba events */
6119 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6120 /* To reload the firmware if it crashes */
6121 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6122
6123 /* TX reclaim and RX tasklets. */
6124 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll);
6125 tasklet_disable(&priv->poll_tx_task);
6126 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll);
6127 tasklet_disable(&priv->poll_rx_task);
6128
6129 /* Power management cookie */
6130 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
6131 if (priv->cookie == NULL)
6132 return -ENOMEM;
6133
6134 mutex_init(&priv->fw_mutex);
6135 priv->fw_mutex_owner = NULL;
6136 priv->fw_mutex_depth = 0;
6137 priv->hostcmd_wait = NULL;
6138
6139 spin_lock_init(&priv->tx_lock);
6140
6141 spin_lock_init(&priv->stream_lock);
6142
6143 priv->tx_wait = NULL;
6144
6145 rc = mwl8k_probe_hw(hw);
6146 if (rc)
6147 goto err_free_cookie;
6148
6149 hw->wiphy->interface_modes = 0;
6150
6151 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6152 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6153 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6154 hw->wiphy->iface_combinations = &ap_if_comb;
6155 hw->wiphy->n_iface_combinations = 1;
6156 }
6157
6158 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6159 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6160
6161 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
6162
6163 rc = ieee80211_register_hw(hw);
6164 if (rc) {
6165 wiphy_err(hw->wiphy, "Cannot register device\n");
6166 goto err_unprobe_hw;
6167 }
6168
6169 return 0;
6170
6171 err_unprobe_hw:
6172 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6173 mwl8k_txq_deinit(hw, i);
6174 mwl8k_rxq_deinit(hw, 0);
6175
6176 err_free_cookie:
6177 if (priv->cookie != NULL)
6178 pci_free_consistent(priv->pdev, 4,
6179 priv->cookie, priv->cookie_dma);
6180
6181 return rc;
6182 }
mwl8k_probe(struct pci_dev *pdev, const struct pci_device_id *id)6183 static int mwl8k_probe(struct pci_dev *pdev,
6184 const struct pci_device_id *id)
6185 {
6186 static int printed_version;
6187 struct ieee80211_hw *hw;
6188 struct mwl8k_priv *priv;
6189 struct mwl8k_device_info *di;
6190 int rc;
6191
6192 if (!printed_version) {
6193 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6194 printed_version = 1;
6195 }
6196
6197
6198 rc = pci_enable_device(pdev);
6199 if (rc) {
6200 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6201 MWL8K_NAME);
6202 return rc;
6203 }
6204
6205 rc = pci_request_regions(pdev, MWL8K_NAME);
6206 if (rc) {
6207 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6208 MWL8K_NAME);
6209 goto err_disable_device;
6210 }
6211
6212 pci_set_master(pdev);
6213
6214
6215 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6216 if (hw == NULL) {
6217 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6218 rc = -ENOMEM;
6219 goto err_free_reg;
6220 }
6221
6222 SET_IEEE80211_DEV(hw, &pdev->dev);
6223 pci_set_drvdata(pdev, hw);
6224
6225 priv = hw->priv;
6226 priv->hw = hw;
6227 priv->pdev = pdev;
6228 priv->device_info = &mwl8k_info_tbl[id->driver_data];
6229
6230 if (id->driver_data == MWL8764)
6231 priv->is_8764 = true;
6232
6233 priv->sram = pci_iomap(pdev, 0, 0x10000);
6234 if (priv->sram == NULL) {
6235 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6236 rc = -EIO;
6237 goto err_iounmap;
6238 }
6239
6240 /*
6241 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6242 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6243 */
6244 priv->regs = pci_iomap(pdev, 1, 0x10000);
6245 if (priv->regs == NULL) {
6246 priv->regs = pci_iomap(pdev, 2, 0x10000);
6247 if (priv->regs == NULL) {
6248 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6249 rc = -EIO;
6250 goto err_iounmap;
6251 }
6252 }
6253
6254 /*
6255 * Choose the initial fw image depending on user input. If a second
6256 * image is available, make it the alternative image that will be
6257 * loaded if the first one fails.
6258 */
6259 init_completion(&priv->firmware_loading_complete);
6260 di = priv->device_info;
6261 if (ap_mode_default && di->fw_image_ap) {
6262 priv->fw_pref = di->fw_image_ap;
6263 priv->fw_alt = di->fw_image_sta;
6264 } else if (!ap_mode_default && di->fw_image_sta) {
6265 priv->fw_pref = di->fw_image_sta;
6266 priv->fw_alt = di->fw_image_ap;
6267 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6268 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6269 priv->fw_pref = di->fw_image_sta;
6270 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6271 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6272 priv->fw_pref = di->fw_image_ap;
6273 }
6274 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6275 if (rc)
6276 goto err_stop_firmware;
6277
6278 priv->hw_restart_in_progress = false;
6279
6280 priv->running_bsses = 0;
6281
6282 return rc;
6283
6284 err_stop_firmware:
6285 mwl8k_hw_reset(priv);
6286
6287 err_iounmap:
6288 if (priv->regs != NULL)
6289 pci_iounmap(pdev, priv->regs);
6290
6291 if (priv->sram != NULL)
6292 pci_iounmap(pdev, priv->sram);
6293
6294 ieee80211_free_hw(hw);
6295
6296 err_free_reg:
6297 pci_release_regions(pdev);
6298
6299 err_disable_device:
6300 pci_disable_device(pdev);
6301
6302 return rc;
6303 }
6304
mwl8k_remove(struct pci_dev *pdev)6305 static void mwl8k_remove(struct pci_dev *pdev)
6306 {
6307 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6308 struct mwl8k_priv *priv;
6309 int i;
6310
6311 if (hw == NULL)
6312 return;
6313 priv = hw->priv;
6314
6315 wait_for_completion(&priv->firmware_loading_complete);
6316
6317 if (priv->fw_state == FW_STATE_ERROR) {
6318 mwl8k_hw_reset(priv);
6319 goto unmap;
6320 }
6321
6322 ieee80211_stop_queues(hw);
6323
6324 ieee80211_unregister_hw(hw);
6325
6326 /* Remove TX reclaim and RX tasklets. */
6327 tasklet_kill(&priv->poll_tx_task);
6328 tasklet_kill(&priv->poll_rx_task);
6329
6330 /* Stop hardware */
6331 mwl8k_hw_reset(priv);
6332
6333 /* Return all skbs to mac80211 */
6334 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6335 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6336
6337 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6338 mwl8k_txq_deinit(hw, i);
6339
6340 mwl8k_rxq_deinit(hw, 0);
6341
6342 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6343
6344 unmap:
6345 pci_iounmap(pdev, priv->regs);
6346 pci_iounmap(pdev, priv->sram);
6347 ieee80211_free_hw(hw);
6348 pci_release_regions(pdev);
6349 pci_disable_device(pdev);
6350 }
6351
6352 static struct pci_driver mwl8k_driver = {
6353 .name = MWL8K_NAME,
6354 .id_table = mwl8k_pci_id_table,
6355 .probe = mwl8k_probe,
6356 .remove = mwl8k_remove,
6357 };
6358
6359 module_pci_driver(mwl8k_driver);
6360
6361 MODULE_DESCRIPTION(MWL8K_DESC);
6362 MODULE_VERSION(MWL8K_VERSION);
6363 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6364 MODULE_LICENSE("GPL");
6365