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drm/rockchip: Don't change hdmi reference clock rate
[drm/drm-misc.git] / drivers / net / wireless / marvell / mwl8k.c
blobbab9ef37a1ab80e83e2426b27db842a80f01e413
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
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 */
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 */
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
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 */
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
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 /* New members MUST be added within the __struct_group() macro below. */
591 __struct_group(mwl8k_cmd_pkt_hdr, hdr, __packed,
592 __le16 code;
593 __le16 length;
594 __u8 seq_num;
595 __u8 macid;
596 __le16 result;
597 );
598 char payload[];
599 } __packed;
600 static_assert(offsetof(struct mwl8k_cmd_pkt, payload) == sizeof(struct mwl8k_cmd_pkt_hdr),
601 "struct member likely outside of __struct_group()");
602
603 /*
604 * Firmware loading.
605 */
606 static int
607 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
608 {
609 void __iomem *regs = priv->regs;
610 dma_addr_t dma_addr;
611 int loops;
612
613 dma_addr = dma_map_single(&priv->pdev->dev, data, length,
614 DMA_TO_DEVICE);
615 if (dma_mapping_error(&priv->pdev->dev, dma_addr))
616 return -ENOMEM;
617
618 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
619 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
620 iowrite32(MWL8K_H2A_INT_DOORBELL,
621 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
622 iowrite32(MWL8K_H2A_INT_DUMMY,
623 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
624
625 loops = 1000;
626 do {
627 u32 int_code;
628 if (priv->is_8764) {
629 int_code = ioread32(regs +
630 MWL8K_HIU_H2A_INTERRUPT_STATUS);
631 if (int_code == 0)
632 break;
633 } else {
634 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
635 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
636 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
637 break;
638 }
639 }
640 cond_resched();
641 udelay(1);
642 } while (--loops);
643
644 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE);
645
646 return loops ? 0 : -ETIMEDOUT;
647 }
648
649 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
650 const u8 *data, size_t length)
651 {
652 struct mwl8k_cmd_pkt *cmd;
653 int done;
654 int rc = 0;
655
656 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
657 if (cmd == NULL)
658 return -ENOMEM;
659
660 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
661 cmd->seq_num = 0;
662 cmd->macid = 0;
663 cmd->result = 0;
664
665 done = 0;
666 while (length) {
667 int block_size = length > 256 ? 256 : length;
668
669 memcpy(cmd->payload, data + done, block_size);
670 cmd->length = cpu_to_le16(block_size);
671
672 rc = mwl8k_send_fw_load_cmd(priv, cmd,
673 sizeof(*cmd) + block_size);
674 if (rc)
675 break;
676
677 done += block_size;
678 length -= block_size;
679 }
680
681 if (!rc) {
682 cmd->length = 0;
683 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
684 }
685
686 kfree(cmd);
687
688 return rc;
689 }
690
691 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
692 const u8 *data, size_t length)
693 {
694 unsigned char *buffer;
695 int may_continue, rc = 0;
696 u32 done, prev_block_size;
697
698 buffer = kmalloc(1024, GFP_KERNEL);
699 if (buffer == NULL)
700 return -ENOMEM;
701
702 done = 0;
703 prev_block_size = 0;
704 may_continue = 1000;
705 while (may_continue > 0) {
706 u32 block_size;
707
708 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
709 if (block_size & 1) {
710 block_size &= ~1;
711 may_continue--;
712 } else {
713 done += prev_block_size;
714 length -= prev_block_size;
715 }
716
717 if (block_size > 1024 || block_size > length) {
718 rc = -EOVERFLOW;
719 break;
720 }
721
722 if (length == 0) {
723 rc = 0;
724 break;
725 }
726
727 if (block_size == 0) {
728 rc = -EPROTO;
729 may_continue--;
730 udelay(1);
731 continue;
732 }
733
734 prev_block_size = block_size;
735 memcpy(buffer, data + done, block_size);
736
737 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
738 if (rc)
739 break;
740 }
741
742 if (!rc && length != 0)
743 rc = -EREMOTEIO;
744
745 kfree(buffer);
746
747 return rc;
748 }
749
750 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
751 {
752 struct mwl8k_priv *priv = hw->priv;
753 const struct firmware *fw = priv->fw_ucode;
754 int rc;
755 int loops;
756
757 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
758 const struct firmware *helper = priv->fw_helper;
759
760 if (helper == NULL) {
761 printk(KERN_ERR "%s: helper image needed but none "
762 "given\n", pci_name(priv->pdev));
763 return -EINVAL;
764 }
765
766 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
767 if (rc) {
768 printk(KERN_ERR "%s: unable to load firmware "
769 "helper image\n", pci_name(priv->pdev));
770 return rc;
771 }
772 msleep(20);
773
774 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
775 } else {
776 if (priv->is_8764)
777 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
778 else
779 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
780 }
781
782 if (rc) {
783 printk(KERN_ERR "%s: unable to load firmware image\n",
784 pci_name(priv->pdev));
785 return rc;
786 }
787
788 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
789
790 loops = 500000;
791 do {
792 u32 ready_code;
793
794 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
795 if (ready_code == MWL8K_FWAP_READY) {
796 priv->ap_fw = true;
797 break;
798 } else if (ready_code == MWL8K_FWSTA_READY) {
799 priv->ap_fw = false;
800 break;
801 }
802
803 cond_resched();
804 udelay(1);
805 } while (--loops);
806
807 return loops ? 0 : -ETIMEDOUT;
808 }
809
810
811 /* DMA header used by firmware and hardware. */
812 struct mwl8k_dma_data {
813 __le16 fwlen;
814 struct ieee80211_hdr wh;
815 char data[];
816 } __packed __aligned(2);
817
818 /* Routines to add/remove DMA header from skb. */
819 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
820 {
821 struct mwl8k_dma_data *tr;
822 int hdrlen;
823
824 tr = (struct mwl8k_dma_data *)skb->data;
825 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
826
827 if (hdrlen != sizeof(tr->wh)) {
828 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
829 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
830 *((__le16 *)(tr->data - 2)) = qos;
831 } else {
832 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
833 }
834 }
835
836 if (hdrlen != sizeof(*tr))
837 skb_pull(skb, sizeof(*tr) - hdrlen);
838 }
839
840 #define REDUCED_TX_HEADROOM 8
841
842 static void
843 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
844 int head_pad, int tail_pad)
845 {
846 struct ieee80211_hdr *wh;
847 int hdrlen;
848 int reqd_hdrlen;
849 struct mwl8k_dma_data *tr;
850
851 /*
852 * Add a firmware DMA header; the firmware requires that we
853 * present a 2-byte payload length followed by a 4-address
854 * header (without QoS field), followed (optionally) by any
855 * WEP/ExtIV header (but only filled in for CCMP).
856 */
857 wh = (struct ieee80211_hdr *)skb->data;
858
859 hdrlen = ieee80211_hdrlen(wh->frame_control);
860
861 /*
862 * Check if skb_resize is required because of
863 * tx_headroom adjustment.
864 */
865 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
866 + REDUCED_TX_HEADROOM))) {
867 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
868
869 wiphy_err(priv->hw->wiphy,
870 "Failed to reallocate TX buffer\n");
871 return;
872 }
873 skb->truesize += REDUCED_TX_HEADROOM;
874 }
875
876 reqd_hdrlen = sizeof(*tr) + head_pad;
877
878 if (hdrlen != reqd_hdrlen)
879 skb_push(skb, reqd_hdrlen - hdrlen);
880
881 if (ieee80211_is_data_qos(wh->frame_control))
882 hdrlen -= IEEE80211_QOS_CTL_LEN;
883
884 tr = (struct mwl8k_dma_data *)skb->data;
885 if (wh != &tr->wh)
886 memmove(&tr->wh, wh, hdrlen);
887 if (hdrlen != sizeof(tr->wh))
888 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
889
890 /*
891 * Firmware length is the length of the fully formed "802.11
892 * payload". That is, everything except for the 802.11 header.
893 * This includes all crypto material including the MIC.
894 */
895 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
896 }
897
898 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
899 struct sk_buff *skb)
900 {
901 struct ieee80211_hdr *wh;
902 struct ieee80211_tx_info *tx_info;
903 struct ieee80211_key_conf *key_conf;
904 int data_pad;
905 int head_pad = 0;
906
907 wh = (struct ieee80211_hdr *)skb->data;
908
909 tx_info = IEEE80211_SKB_CB(skb);
910
911 key_conf = NULL;
912 if (ieee80211_is_data(wh->frame_control))
913 key_conf = tx_info->control.hw_key;
914
915 /*
916 * Make sure the packet header is in the DMA header format (4-address
917 * without QoS), and add head & tail padding when HW crypto is enabled.
918 *
919 * We have the following trailer padding requirements:
920 * - WEP: 4 trailer bytes (ICV)
921 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
922 * - CCMP: 8 trailer bytes (MIC)
923 */
924 data_pad = 0;
925 if (key_conf != NULL) {
926 head_pad = key_conf->iv_len;
927 switch (key_conf->cipher) {
928 case WLAN_CIPHER_SUITE_WEP40:
929 case WLAN_CIPHER_SUITE_WEP104:
930 data_pad = 4;
931 break;
932 case WLAN_CIPHER_SUITE_TKIP:
933 data_pad = 12;
934 break;
935 case WLAN_CIPHER_SUITE_CCMP:
936 data_pad = 8;
937 break;
938 }
939 }
940 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
941 }
942
943 /*
944 * Packet reception for 88w8366/88w8764 AP firmware.
945 */
946 struct mwl8k_rxd_ap {
947 __le16 pkt_len;
948 __u8 sq2;
949 __u8 rate;
950 __le32 pkt_phys_addr;
951 __le32 next_rxd_phys_addr;
952 __le16 qos_control;
953 __le16 htsig2;
954 __le32 hw_rssi_info;
955 __le32 hw_noise_floor_info;
956 __u8 noise_floor;
957 __u8 pad0[3];
958 __u8 rssi;
959 __u8 rx_status;
960 __u8 channel;
961 __u8 rx_ctrl;
962 } __packed;
963
964 #define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
965 #define MWL8K_AP_RATE_INFO_40MHZ 0x40
966 #define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
967
968 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
969
970 /* 8366/8764 AP rx_status bits */
971 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
972 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
973 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
974 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
975 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
976
977 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
978 {
979 struct mwl8k_rxd_ap *rxd = _rxd;
980
981 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
982 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
983 }
984
985 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
986 {
987 struct mwl8k_rxd_ap *rxd = _rxd;
988
989 rxd->pkt_len = cpu_to_le16(len);
990 rxd->pkt_phys_addr = cpu_to_le32(addr);
991 wmb();
992 rxd->rx_ctrl = 0;
993 }
994
995 static int
996 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
997 __le16 *qos, s8 *noise)
998 {
999 struct mwl8k_rxd_ap *rxd = _rxd;
1000
1001 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
1002 return -1;
1003 rmb();
1004
1005 memset(status, 0, sizeof(*status));
1006
1007 status->signal = -rxd->rssi;
1008 *noise = -rxd->noise_floor;
1009
1010 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
1011 status->encoding = RX_ENC_HT;
1012 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
1013 status->bw = RATE_INFO_BW_40;
1014 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
1015 } else {
1016 int i;
1017
1018 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
1019 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
1020 status->rate_idx = i;
1021 break;
1022 }
1023 }
1024 }
1025
1026 if (rxd->channel > 14) {
1027 status->band = NL80211_BAND_5GHZ;
1028 if (!(status->encoding == RX_ENC_HT) &&
1029 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1030 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1031 } else {
1032 status->band = NL80211_BAND_2GHZ;
1033 }
1034 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1035 status->band);
1036
1037 *qos = rxd->qos_control;
1038
1039 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1040 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1041 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1042 status->flag |= RX_FLAG_MMIC_ERROR;
1043
1044 return le16_to_cpu(rxd->pkt_len);
1045 }
1046
1047 static struct rxd_ops rxd_ap_ops = {
1048 .rxd_size = sizeof(struct mwl8k_rxd_ap),
1049 .rxd_init = mwl8k_rxd_ap_init,
1050 .rxd_refill = mwl8k_rxd_ap_refill,
1051 .rxd_process = mwl8k_rxd_ap_process,
1052 };
1053
1054 /*
1055 * Packet reception for STA firmware.
1056 */
1057 struct mwl8k_rxd_sta {
1058 __le16 pkt_len;
1059 __u8 link_quality;
1060 __u8 noise_level;
1061 __le32 pkt_phys_addr;
1062 __le32 next_rxd_phys_addr;
1063 __le16 qos_control;
1064 __le16 rate_info;
1065 __le32 pad0[4];
1066 __u8 rssi;
1067 __u8 channel;
1068 __le16 pad1;
1069 __u8 rx_ctrl;
1070 __u8 rx_status;
1071 __u8 pad2[2];
1072 } __packed;
1073
1074 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1075 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1076 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1077 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1078 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1079 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1080
1081 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1082 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1083 /* ICV=0 or MIC=1 */
1084 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1085 /* Key is uploaded only in failure case */
1086 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1087
1088 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1089 {
1090 struct mwl8k_rxd_sta *rxd = _rxd;
1091
1092 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1093 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1094 }
1095
1096 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1097 {
1098 struct mwl8k_rxd_sta *rxd = _rxd;
1099
1100 rxd->pkt_len = cpu_to_le16(len);
1101 rxd->pkt_phys_addr = cpu_to_le32(addr);
1102 wmb();
1103 rxd->rx_ctrl = 0;
1104 }
1105
1106 static int
1107 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1108 __le16 *qos, s8 *noise)
1109 {
1110 struct mwl8k_rxd_sta *rxd = _rxd;
1111 u16 rate_info;
1112
1113 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1114 return -1;
1115 rmb();
1116
1117 rate_info = le16_to_cpu(rxd->rate_info);
1118
1119 memset(status, 0, sizeof(*status));
1120
1121 status->signal = -rxd->rssi;
1122 *noise = -rxd->noise_level;
1123 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1124 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1125
1126 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1127 status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1128 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1129 status->bw = RATE_INFO_BW_40;
1130 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1131 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1132 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1133 status->encoding = RX_ENC_HT;
1134
1135 if (rxd->channel > 14) {
1136 status->band = NL80211_BAND_5GHZ;
1137 if (!(status->encoding == RX_ENC_HT) &&
1138 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1139 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1140 } else {
1141 status->band = NL80211_BAND_2GHZ;
1142 }
1143 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1144 status->band);
1145
1146 *qos = rxd->qos_control;
1147 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1148 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1149 status->flag |= RX_FLAG_MMIC_ERROR;
1150
1151 return le16_to_cpu(rxd->pkt_len);
1152 }
1153
1154 static struct rxd_ops rxd_sta_ops = {
1155 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1156 .rxd_init = mwl8k_rxd_sta_init,
1157 .rxd_refill = mwl8k_rxd_sta_refill,
1158 .rxd_process = mwl8k_rxd_sta_process,
1159 };
1160
1161
1162 #define MWL8K_RX_DESCS 256
1163 #define MWL8K_RX_MAXSZ 3800
1164
1165 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1166 {
1167 struct mwl8k_priv *priv = hw->priv;
1168 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1169 int size;
1170 int i;
1171
1172 rxq->rxd_count = 0;
1173 rxq->head = 0;
1174 rxq->tail = 0;
1175
1176 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1177
1178 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma,
1179 GFP_KERNEL);
1180 if (rxq->rxd == NULL) {
1181 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1182 return -ENOMEM;
1183 }
1184
1185 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1186 if (rxq->buf == NULL) {
1187 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd,
1188 rxq->rxd_dma);
1189 return -ENOMEM;
1190 }
1191
1192 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1193 int desc_size;
1194 void *rxd;
1195 int nexti;
1196 dma_addr_t next_dma_addr;
1197
1198 desc_size = priv->rxd_ops->rxd_size;
1199 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1200
1201 nexti = i + 1;
1202 if (nexti == MWL8K_RX_DESCS)
1203 nexti = 0;
1204 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1205
1206 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1207 }
1208
1209 return 0;
1210 }
1211
1212 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1213 {
1214 struct mwl8k_priv *priv = hw->priv;
1215 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1216 int refilled = 0;
1217
1218 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1219 struct sk_buff *skb;
1220 dma_addr_t addr;
1221 int rx;
1222 void *rxd;
1223
1224 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1225 if (skb == NULL)
1226 break;
1227
1228 addr = dma_map_single(&priv->pdev->dev, skb->data,
1229 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1230
1231 rxq->rxd_count++;
1232 rx = rxq->tail++;
1233 if (rxq->tail == MWL8K_RX_DESCS)
1234 rxq->tail = 0;
1235 rxq->buf[rx].skb = skb;
1236 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1237
1238 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1239 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1240
1241 refilled++;
1242 }
1243
1244 return refilled;
1245 }
1246
1247 /* Must be called only when the card's reception is completely halted */
1248 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1249 {
1250 struct mwl8k_priv *priv = hw->priv;
1251 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1252 int i;
1253
1254 if (rxq->rxd == NULL)
1255 return;
1256
1257 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1258 if (rxq->buf[i].skb != NULL) {
1259 dma_unmap_single(&priv->pdev->dev,
1260 dma_unmap_addr(&rxq->buf[i], dma),
1261 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1262 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1263
1264 kfree_skb(rxq->buf[i].skb);
1265 rxq->buf[i].skb = NULL;
1266 }
1267 }
1268
1269 kfree(rxq->buf);
1270 rxq->buf = NULL;
1271
1272 dma_free_coherent(&priv->pdev->dev,
1273 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd,
1274 rxq->rxd_dma);
1275 rxq->rxd = NULL;
1276 }
1277
1278
1279 /*
1280 * Scan a list of BSSIDs to process for finalize join.
1281 * Allows for extension to process multiple BSSIDs.
1282 */
1283 static inline int
1284 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1285 {
1286 return priv->capture_beacon &&
1287 ieee80211_is_beacon(wh->frame_control) &&
1288 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
1289 }
1290
1291 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1292 struct sk_buff *skb)
1293 {
1294 struct mwl8k_priv *priv = hw->priv;
1295
1296 priv->capture_beacon = false;
1297 eth_zero_addr(priv->capture_bssid);
1298
1299 /*
1300 * Use GFP_ATOMIC as rxq_process is called from
1301 * the primary interrupt handler, memory allocation call
1302 * must not sleep.
1303 */
1304 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1305 if (priv->beacon_skb != NULL)
1306 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1307 }
1308
1309 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1310 u8 *bssid)
1311 {
1312 struct mwl8k_vif *mwl8k_vif;
1313
1314 list_for_each_entry(mwl8k_vif,
1315 vif_list, list) {
1316 if (memcmp(bssid, mwl8k_vif->bssid,
1317 ETH_ALEN) == 0)
1318 return mwl8k_vif;
1319 }
1320
1321 return NULL;
1322 }
1323
1324 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1325 {
1326 struct mwl8k_priv *priv = hw->priv;
1327 struct mwl8k_vif *mwl8k_vif = NULL;
1328 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1329 int processed;
1330
1331 processed = 0;
1332 while (rxq->rxd_count && limit--) {
1333 struct sk_buff *skb;
1334 void *rxd;
1335 int pkt_len;
1336 struct ieee80211_rx_status status;
1337 struct ieee80211_hdr *wh;
1338 __le16 qos;
1339
1340 skb = rxq->buf[rxq->head].skb;
1341 if (skb == NULL)
1342 break;
1343
1344 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1345
1346 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1347 &priv->noise);
1348 if (pkt_len < 0)
1349 break;
1350
1351 rxq->buf[rxq->head].skb = NULL;
1352
1353 dma_unmap_single(&priv->pdev->dev,
1354 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1355 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1356 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1357
1358 rxq->head++;
1359 if (rxq->head == MWL8K_RX_DESCS)
1360 rxq->head = 0;
1361
1362 rxq->rxd_count--;
1363
1364 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1365
1366 /*
1367 * Check for a pending join operation. Save a
1368 * copy of the beacon and schedule a tasklet to
1369 * send a FINALIZE_JOIN command to the firmware.
1370 */
1371 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1372 mwl8k_save_beacon(hw, skb);
1373
1374 if (ieee80211_has_protected(wh->frame_control)) {
1375
1376 /* Check if hw crypto has been enabled for
1377 * this bss. If yes, set the status flags
1378 * accordingly
1379 */
1380 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1381 wh->addr1);
1382
1383 if (mwl8k_vif != NULL &&
1384 mwl8k_vif->is_hw_crypto_enabled) {
1385 /*
1386 * When MMIC ERROR is encountered
1387 * by the firmware, payload is
1388 * dropped and only 32 bytes of
1389 * mwl8k Firmware header is sent
1390 * to the host.
1391 *
1392 * We need to add four bytes of
1393 * key information. In it
1394 * MAC80211 expects keyidx set to
1395 * 0 for triggering Counter
1396 * Measure of MMIC failure.
1397 */
1398 if (status.flag & RX_FLAG_MMIC_ERROR) {
1399 struct mwl8k_dma_data *tr;
1400 tr = (struct mwl8k_dma_data *)skb->data;
1401 memset((void *)&(tr->data), 0, 4);
1402 pkt_len += 4;
1403 }
1404
1405 if (!ieee80211_is_auth(wh->frame_control))
1406 status.flag |= RX_FLAG_IV_STRIPPED |
1407 RX_FLAG_DECRYPTED |
1408 RX_FLAG_MMIC_STRIPPED;
1409 }
1410 }
1411
1412 skb_put(skb, pkt_len);
1413 mwl8k_remove_dma_header(skb, qos);
1414 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1415 ieee80211_rx_irqsafe(hw, skb);
1416
1417 processed++;
1418 }
1419
1420 return processed;
1421 }
1422
1423
1424 /*
1425 * Packet transmission.
1426 */
1427
1428 #define MWL8K_TXD_STATUS_OK 0x00000001
1429 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1430 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1431 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1432 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1433
1434 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1435 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1436 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1437 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1438 #define MWL8K_QOS_EOSP 0x0010
1439
1440 struct mwl8k_tx_desc {
1441 __le32 status;
1442 __u8 data_rate;
1443 __u8 tx_priority;
1444 __le16 qos_control;
1445 __le32 pkt_phys_addr;
1446 __le16 pkt_len;
1447 __u8 dest_MAC_addr[ETH_ALEN];
1448 __le32 next_txd_phys_addr;
1449 __le32 timestamp;
1450 __le16 rate_info;
1451 __u8 peer_id;
1452 __u8 tx_frag_cnt;
1453 } __packed;
1454
1455 #define MWL8K_TX_DESCS 128
1456
1457 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1458 {
1459 struct mwl8k_priv *priv = hw->priv;
1460 struct mwl8k_tx_queue *txq = priv->txq + index;
1461 int size;
1462 int i;
1463
1464 txq->len = 0;
1465 txq->head = 0;
1466 txq->tail = 0;
1467
1468 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1469
1470 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma,
1471 GFP_KERNEL);
1472 if (txq->txd == NULL) {
1473 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1474 return -ENOMEM;
1475 }
1476
1477 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1478 if (txq->skb == NULL) {
1479 dma_free_coherent(&priv->pdev->dev, size, txq->txd,
1480 txq->txd_dma);
1481 txq->txd = NULL;
1482 return -ENOMEM;
1483 }
1484
1485 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1486 struct mwl8k_tx_desc *tx_desc;
1487 int nexti;
1488
1489 tx_desc = txq->txd + i;
1490 nexti = (i + 1) % MWL8K_TX_DESCS;
1491
1492 tx_desc->status = 0;
1493 tx_desc->next_txd_phys_addr =
1494 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1495 }
1496
1497 return 0;
1498 }
1499
1500 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1501 {
1502 iowrite32(MWL8K_H2A_INT_PPA_READY,
1503 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1504 iowrite32(MWL8K_H2A_INT_DUMMY,
1505 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1506 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1507 }
1508
1509 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1510 {
1511 struct mwl8k_priv *priv = hw->priv;
1512 int i;
1513
1514 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1515 struct mwl8k_tx_queue *txq = priv->txq + i;
1516 int fw_owned = 0;
1517 int drv_owned = 0;
1518 int unused = 0;
1519 int desc;
1520
1521 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1522 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1523 u32 status;
1524
1525 status = le32_to_cpu(tx_desc->status);
1526 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1527 fw_owned++;
1528 else
1529 drv_owned++;
1530
1531 if (tx_desc->pkt_len == 0)
1532 unused++;
1533 }
1534
1535 wiphy_err(hw->wiphy,
1536 "txq[%d] len=%d head=%d tail=%d "
1537 "fw_owned=%d drv_owned=%d unused=%d\n",
1538 i,
1539 txq->len, txq->head, txq->tail,
1540 fw_owned, drv_owned, unused);
1541 }
1542 }
1543
1544 /*
1545 * Must be called with priv->fw_mutex held and tx queues stopped.
1546 */
1547 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1548
1549 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1550 {
1551 struct mwl8k_priv *priv = hw->priv;
1552 DECLARE_COMPLETION_ONSTACK(tx_wait);
1553 int retry;
1554 int rc;
1555
1556 might_sleep();
1557
1558 /* Since fw restart is in progress, allow only the firmware
1559 * commands from the restart code and block the other
1560 * commands since they are going to fail in any case since
1561 * the firmware has crashed
1562 */
1563 if (priv->hw_restart_in_progress) {
1564 if (priv->hw_restart_owner == current)
1565 return 0;
1566 else
1567 return -EBUSY;
1568 }
1569
1570 if (atomic_read(&priv->watchdog_event_pending))
1571 return 0;
1572
1573 /*
1574 * The TX queues are stopped at this point, so this test
1575 * doesn't need to take ->tx_lock.
1576 */
1577 if (!priv->pending_tx_pkts)
1578 return 0;
1579
1580 retry = 1;
1581 rc = 0;
1582
1583 spin_lock_bh(&priv->tx_lock);
1584 priv->tx_wait = &tx_wait;
1585 while (!rc) {
1586 int oldcount;
1587 unsigned long timeout;
1588
1589 oldcount = priv->pending_tx_pkts;
1590
1591 spin_unlock_bh(&priv->tx_lock);
1592 timeout = wait_for_completion_timeout(&tx_wait,
1593 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1594
1595 if (atomic_read(&priv->watchdog_event_pending)) {
1596 spin_lock_bh(&priv->tx_lock);
1597 priv->tx_wait = NULL;
1598 spin_unlock_bh(&priv->tx_lock);
1599 return 0;
1600 }
1601
1602 spin_lock_bh(&priv->tx_lock);
1603
1604 if (timeout || !priv->pending_tx_pkts) {
1605 WARN_ON(priv->pending_tx_pkts);
1606 if (retry)
1607 wiphy_notice(hw->wiphy, "tx rings drained\n");
1608 break;
1609 }
1610
1611 if (retry) {
1612 mwl8k_tx_start(priv);
1613 retry = 0;
1614 continue;
1615 }
1616
1617 if (priv->pending_tx_pkts < oldcount) {
1618 wiphy_notice(hw->wiphy,
1619 "waiting for tx rings to drain (%d -> %d pkts)\n",
1620 oldcount, priv->pending_tx_pkts);
1621 retry = 1;
1622 continue;
1623 }
1624
1625 priv->tx_wait = NULL;
1626
1627 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1628 MWL8K_TX_WAIT_TIMEOUT_MS);
1629 mwl8k_dump_tx_rings(hw);
1630 priv->hw_restart_in_progress = true;
1631 ieee80211_queue_work(hw, &priv->fw_reload);
1632
1633 rc = -ETIMEDOUT;
1634 }
1635 priv->tx_wait = NULL;
1636 spin_unlock_bh(&priv->tx_lock);
1637
1638 return rc;
1639 }
1640
1641 #define MWL8K_TXD_SUCCESS(status) \
1642 ((status) & (MWL8K_TXD_STATUS_OK | \
1643 MWL8K_TXD_STATUS_OK_RETRY | \
1644 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1645
1646 static int mwl8k_tid_queue_mapping(u8 tid)
1647 {
1648 BUG_ON(tid > 7);
1649
1650 switch (tid) {
1651 case 0:
1652 case 3:
1653 return IEEE80211_AC_BE;
1654 case 1:
1655 case 2:
1656 return IEEE80211_AC_BK;
1657 case 4:
1658 case 5:
1659 return IEEE80211_AC_VI;
1660 case 6:
1661 case 7:
1662 return IEEE80211_AC_VO;
1663 default:
1664 return -1;
1665 }
1666 }
1667
1668 /* The firmware will fill in the rate information
1669 * for each packet that gets queued in the hardware
1670 * and these macros will interpret that info.
1671 */
1672
1673 #define RI_FORMAT(a) (a & 0x0001)
1674 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1675
1676 static int
1677 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1678 {
1679 struct mwl8k_priv *priv = hw->priv;
1680 struct mwl8k_tx_queue *txq = priv->txq + index;
1681 int processed;
1682
1683 processed = 0;
1684 while (txq->len > 0 && limit--) {
1685 int tx;
1686 struct mwl8k_tx_desc *tx_desc;
1687 unsigned long addr;
1688 int size;
1689 struct sk_buff *skb;
1690 struct ieee80211_tx_info *info;
1691 u32 status;
1692 struct ieee80211_sta *sta;
1693 struct mwl8k_sta *sta_info = NULL;
1694 u16 rate_info;
1695 struct ieee80211_hdr *wh;
1696
1697 tx = txq->head;
1698 tx_desc = txq->txd + tx;
1699
1700 status = le32_to_cpu(tx_desc->status);
1701
1702 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1703 if (!force)
1704 break;
1705 tx_desc->status &=
1706 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1707 }
1708
1709 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1710 BUG_ON(txq->len == 0);
1711 txq->len--;
1712 priv->pending_tx_pkts--;
1713
1714 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1715 size = le16_to_cpu(tx_desc->pkt_len);
1716 skb = txq->skb[tx];
1717 txq->skb[tx] = NULL;
1718
1719 BUG_ON(skb == NULL);
1720 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE);
1721
1722 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1723
1724 wh = (struct ieee80211_hdr *) skb->data;
1725
1726 /* Mark descriptor as unused */
1727 tx_desc->pkt_phys_addr = 0;
1728 tx_desc->pkt_len = 0;
1729
1730 info = IEEE80211_SKB_CB(skb);
1731 if (ieee80211_is_data(wh->frame_control)) {
1732 rcu_read_lock();
1733 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1734 wh->addr2);
1735 if (sta) {
1736 sta_info = MWL8K_STA(sta);
1737 BUG_ON(sta_info == NULL);
1738 rate_info = le16_to_cpu(tx_desc->rate_info);
1739 /* If rate is < 6.5 Mpbs for an ht station
1740 * do not form an ampdu. If the station is a
1741 * legacy station (format = 0), do not form an
1742 * ampdu
1743 */
1744 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1745 RI_FORMAT(rate_info) == 0) {
1746 sta_info->is_ampdu_allowed = false;
1747 } else {
1748 sta_info->is_ampdu_allowed = true;
1749 }
1750 }
1751 rcu_read_unlock();
1752 }
1753
1754 ieee80211_tx_info_clear_status(info);
1755
1756 /* Rate control is happening in the firmware.
1757 * Ensure no tx rate is being reported.
1758 */
1759 info->status.rates[0].idx = -1;
1760 info->status.rates[0].count = 1;
1761
1762 if (MWL8K_TXD_SUCCESS(status))
1763 info->flags |= IEEE80211_TX_STAT_ACK;
1764
1765 ieee80211_tx_status_irqsafe(hw, skb);
1766
1767 processed++;
1768 }
1769
1770 return processed;
1771 }
1772
1773 /* must be called only when the card's transmit is completely halted */
1774 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1775 {
1776 struct mwl8k_priv *priv = hw->priv;
1777 struct mwl8k_tx_queue *txq = priv->txq + index;
1778
1779 if (txq->txd == NULL)
1780 return;
1781
1782 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1783
1784 kfree(txq->skb);
1785 txq->skb = NULL;
1786
1787 dma_free_coherent(&priv->pdev->dev,
1788 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1789 txq->txd, txq->txd_dma);
1790 txq->txd = NULL;
1791 }
1792
1793 /* caller must hold priv->stream_lock when calling the stream functions */
1794 static struct mwl8k_ampdu_stream *
1795 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1796 {
1797 struct mwl8k_ampdu_stream *stream;
1798 struct mwl8k_priv *priv = hw->priv;
1799 int i;
1800
1801 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1802 stream = &priv->ampdu[i];
1803 if (stream->state == AMPDU_NO_STREAM) {
1804 stream->sta = sta;
1805 stream->state = AMPDU_STREAM_NEW;
1806 stream->tid = tid;
1807 stream->idx = i;
1808 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1809 sta->addr, tid);
1810 return stream;
1811 }
1812 }
1813 return NULL;
1814 }
1815
1816 static int
1817 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1818 {
1819 int ret;
1820
1821 /* if the stream has already been started, don't start it again */
1822 if (stream->state != AMPDU_STREAM_NEW)
1823 return 0;
1824 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1825 if (ret)
1826 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1827 "%d\n", stream->sta->addr, stream->tid, ret);
1828 else
1829 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1830 stream->sta->addr, stream->tid);
1831 return ret;
1832 }
1833
1834 static void
1835 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1836 {
1837 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1838 stream->tid);
1839 memset(stream, 0, sizeof(*stream));
1840 }
1841
1842 static struct mwl8k_ampdu_stream *
1843 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1844 {
1845 struct mwl8k_priv *priv = hw->priv;
1846 int i;
1847
1848 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1849 struct mwl8k_ampdu_stream *stream;
1850 stream = &priv->ampdu[i];
1851 if (stream->state == AMPDU_NO_STREAM)
1852 continue;
1853 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1854 stream->tid == tid)
1855 return stream;
1856 }
1857 return NULL;
1858 }
1859
1860 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1861 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1862 {
1863 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1864 struct tx_traffic_info *tx_stats;
1865
1866 BUG_ON(tid >= MWL8K_MAX_TID);
1867 tx_stats = &sta_info->tx_stats[tid];
1868
1869 return sta_info->is_ampdu_allowed &&
1870 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1871 }
1872
1873 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1874 {
1875 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1876 struct tx_traffic_info *tx_stats;
1877
1878 BUG_ON(tid >= MWL8K_MAX_TID);
1879 tx_stats = &sta_info->tx_stats[tid];
1880
1881 if (tx_stats->start_time == 0)
1882 tx_stats->start_time = jiffies;
1883
1884 /* reset the packet count after each second elapses. If the number of
1885 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1886 * an ampdu stream to be started.
1887 */
1888 if (time_after(jiffies, (unsigned long)tx_stats->start_time + HZ)) {
1889 tx_stats->pkts = 0;
1890 tx_stats->start_time = 0;
1891 } else
1892 tx_stats->pkts++;
1893 }
1894
1895 /* The hardware ampdu queues start from 5.
1896 * txpriorities for ampdu queues are
1897 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1898 * and queue 3 is lowest (queue 4 is reserved)
1899 */
1900 #define BA_QUEUE 5
1901
1902 static void
1903 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1904 int index,
1905 struct ieee80211_sta *sta,
1906 struct sk_buff *skb)
1907 {
1908 struct mwl8k_priv *priv = hw->priv;
1909 struct ieee80211_tx_info *tx_info;
1910 struct mwl8k_vif *mwl8k_vif;
1911 struct ieee80211_hdr *wh;
1912 struct mwl8k_tx_queue *txq;
1913 struct mwl8k_tx_desc *tx;
1914 dma_addr_t dma;
1915 u32 txstatus;
1916 u8 txdatarate;
1917 u16 qos;
1918 int txpriority;
1919 u8 tid = 0;
1920 struct mwl8k_ampdu_stream *stream = NULL;
1921 bool start_ba_session = false;
1922 bool mgmtframe = false;
1923 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1924 bool eapol_frame = false;
1925
1926 wh = (struct ieee80211_hdr *)skb->data;
1927 if (ieee80211_is_data_qos(wh->frame_control))
1928 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1929 else
1930 qos = 0;
1931
1932 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1933 eapol_frame = true;
1934
1935 if (ieee80211_is_mgmt(wh->frame_control))
1936 mgmtframe = true;
1937
1938 if (priv->ap_fw)
1939 mwl8k_encapsulate_tx_frame(priv, skb);
1940 else
1941 mwl8k_add_dma_header(priv, skb, 0, 0);
1942
1943 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1944
1945 tx_info = IEEE80211_SKB_CB(skb);
1946 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1947
1948 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1949 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1950 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1951 mwl8k_vif->seqno += 0x10;
1952 }
1953
1954 /* Setup firmware control bit fields for each frame type. */
1955 txstatus = 0;
1956 txdatarate = 0;
1957 if (ieee80211_is_mgmt(wh->frame_control) ||
1958 ieee80211_is_ctl(wh->frame_control)) {
1959 txdatarate = 0;
1960 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1961 } else if (ieee80211_is_data(wh->frame_control)) {
1962 txdatarate = 1;
1963 if (is_multicast_ether_addr(wh->addr1))
1964 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1965
1966 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1967 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1968 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1969 else
1970 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1971 }
1972
1973 /* Queue ADDBA request in the respective data queue. While setting up
1974 * the ampdu stream, mac80211 queues further packets for that
1975 * particular ra/tid pair. However, packets piled up in the hardware
1976 * for that ra/tid pair will still go out. ADDBA request and the
1977 * related data packets going out from different queues asynchronously
1978 * will cause a shift in the receiver window which might result in
1979 * ampdu packets getting dropped at the receiver after the stream has
1980 * been setup.
1981 */
1982 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1983 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1984 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1985 priv->ap_fw)) {
1986 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1987 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1988 index = mwl8k_tid_queue_mapping(tid);
1989 }
1990
1991 txpriority = index;
1992
1993 if (priv->ap_fw && sta && sta->deflink.ht_cap.ht_supported && !eapol_frame &&
1994 ieee80211_is_data_qos(wh->frame_control)) {
1995 tid = qos & 0xf;
1996 mwl8k_tx_count_packet(sta, tid);
1997 spin_lock(&priv->stream_lock);
1998 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1999 if (stream != NULL) {
2000 if (stream->state == AMPDU_STREAM_ACTIVE) {
2001 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
2002 txpriority = (BA_QUEUE + stream->idx) %
2003 TOTAL_HW_TX_QUEUES;
2004 if (stream->idx <= 1)
2005 index = stream->idx +
2006 MWL8K_TX_WMM_QUEUES;
2007
2008 } else if (stream->state == AMPDU_STREAM_NEW) {
2009 /* We get here if the driver sends us packets
2010 * after we've initiated a stream, but before
2011 * our ampdu_action routine has been called
2012 * with IEEE80211_AMPDU_TX_START to get the SSN
2013 * for the ADDBA request. So this packet can
2014 * go out with no risk of sequence number
2015 * mismatch. No special handling is required.
2016 */
2017 } else {
2018 /* Drop packets that would go out after the
2019 * ADDBA request was sent but before the ADDBA
2020 * response is received. If we don't do this,
2021 * the recipient would probably receive it
2022 * after the ADDBA request with SSN 0. This
2023 * will cause the recipient's BA receive window
2024 * to shift, which would cause the subsequent
2025 * packets in the BA stream to be discarded.
2026 * mac80211 queues our packets for us in this
2027 * case, so this is really just a safety check.
2028 */
2029 wiphy_warn(hw->wiphy,
2030 "Cannot send packet while ADDBA "
2031 "dialog is underway.\n");
2032 spin_unlock(&priv->stream_lock);
2033 dev_kfree_skb(skb);
2034 return;
2035 }
2036 } else {
2037 /* Defer calling mwl8k_start_stream so that the current
2038 * skb can go out before the ADDBA request. This
2039 * prevents sequence number mismatch at the recepient
2040 * as described above.
2041 */
2042 if (mwl8k_ampdu_allowed(sta, tid)) {
2043 stream = mwl8k_add_stream(hw, sta, tid);
2044 if (stream != NULL)
2045 start_ba_session = true;
2046 }
2047 }
2048 spin_unlock(&priv->stream_lock);
2049 } else {
2050 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2051 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2052 }
2053
2054 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
2055 DMA_TO_DEVICE);
2056
2057 if (dma_mapping_error(&priv->pdev->dev, dma)) {
2058 wiphy_debug(hw->wiphy,
2059 "failed to dma map skb, dropping TX frame.\n");
2060 if (start_ba_session) {
2061 spin_lock(&priv->stream_lock);
2062 mwl8k_remove_stream(hw, stream);
2063 spin_unlock(&priv->stream_lock);
2064 }
2065 dev_kfree_skb(skb);
2066 return;
2067 }
2068
2069 spin_lock_bh(&priv->tx_lock);
2070
2071 txq = priv->txq + index;
2072
2073 /* Mgmt frames that go out frequently are probe
2074 * responses. Other mgmt frames got out relatively
2075 * infrequently. Hence reserve 2 buffers so that
2076 * other mgmt frames do not get dropped due to an
2077 * already queued probe response in one of the
2078 * reserved buffers.
2079 */
2080
2081 if (txq->len >= MWL8K_TX_DESCS - 2) {
2082 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2083 if (start_ba_session) {
2084 spin_lock(&priv->stream_lock);
2085 mwl8k_remove_stream(hw, stream);
2086 spin_unlock(&priv->stream_lock);
2087 }
2088 mwl8k_tx_start(priv);
2089 spin_unlock_bh(&priv->tx_lock);
2090 dma_unmap_single(&priv->pdev->dev, dma, skb->len,
2091 DMA_TO_DEVICE);
2092 dev_kfree_skb(skb);
2093 return;
2094 }
2095 }
2096
2097 BUG_ON(txq->skb[txq->tail] != NULL);
2098 txq->skb[txq->tail] = skb;
2099
2100 tx = txq->txd + txq->tail;
2101 tx->data_rate = txdatarate;
2102 tx->tx_priority = txpriority;
2103 tx->qos_control = cpu_to_le16(qos);
2104 tx->pkt_phys_addr = cpu_to_le32(dma);
2105 tx->pkt_len = cpu_to_le16(skb->len);
2106 tx->rate_info = 0;
2107 if (!priv->ap_fw && sta != NULL)
2108 tx->peer_id = MWL8K_STA(sta)->peer_id;
2109 else
2110 tx->peer_id = 0;
2111
2112 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2113 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2114 MWL8K_HW_TIMER_REGISTER));
2115 else
2116 tx->timestamp = 0;
2117
2118 wmb();
2119 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2120
2121 txq->len++;
2122 priv->pending_tx_pkts++;
2123
2124 txq->tail++;
2125 if (txq->tail == MWL8K_TX_DESCS)
2126 txq->tail = 0;
2127
2128 mwl8k_tx_start(priv);
2129
2130 spin_unlock_bh(&priv->tx_lock);
2131
2132 /* Initiate the ampdu session here */
2133 if (start_ba_session) {
2134 spin_lock(&priv->stream_lock);
2135 if (mwl8k_start_stream(hw, stream))
2136 mwl8k_remove_stream(hw, stream);
2137 spin_unlock(&priv->stream_lock);
2138 }
2139 }
2140
2141
2142 /*
2143 * Firmware access.
2144 *
2145 * We have the following requirements for issuing firmware commands:
2146 * - Some commands require that the packet transmit path is idle when
2147 * the command is issued. (For simplicity, we'll just quiesce the
2148 * transmit path for every command.)
2149 * - There are certain sequences of commands that need to be issued to
2150 * the hardware sequentially, with no other intervening commands.
2151 *
2152 * This leads to an implementation of a "firmware lock" as a mutex that
2153 * can be taken recursively, and which is taken by both the low-level
2154 * command submission function (mwl8k_post_cmd) as well as any users of
2155 * that function that require issuing of an atomic sequence of commands,
2156 * and quiesces the transmit path whenever it's taken.
2157 */
2158 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2159 {
2160 struct mwl8k_priv *priv = hw->priv;
2161
2162 if (priv->fw_mutex_owner != current) {
2163 int rc;
2164
2165 mutex_lock(&priv->fw_mutex);
2166 ieee80211_stop_queues(hw);
2167
2168 rc = mwl8k_tx_wait_empty(hw);
2169 if (rc) {
2170 if (!priv->hw_restart_in_progress)
2171 ieee80211_wake_queues(hw);
2172
2173 mutex_unlock(&priv->fw_mutex);
2174
2175 return rc;
2176 }
2177
2178 priv->fw_mutex_owner = current;
2179 }
2180
2181 priv->fw_mutex_depth++;
2182
2183 return 0;
2184 }
2185
2186 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2187 {
2188 struct mwl8k_priv *priv = hw->priv;
2189
2190 if (!--priv->fw_mutex_depth) {
2191 if (!priv->hw_restart_in_progress)
2192 ieee80211_wake_queues(hw);
2193
2194 priv->fw_mutex_owner = NULL;
2195 mutex_unlock(&priv->fw_mutex);
2196 }
2197 }
2198
2199 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2200 u32 bitmap);
2201
2202 /*
2203 * Command processing.
2204 */
2205
2206 /* Timeout firmware commands after 10s */
2207 #define MWL8K_CMD_TIMEOUT_MS 10000
2208
2209 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt_hdr *cmd)
2210 {
2211 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2212 struct mwl8k_priv *priv = hw->priv;
2213 void __iomem *regs = priv->regs;
2214 dma_addr_t dma_addr;
2215 unsigned int dma_size;
2216 int rc;
2217 unsigned long time_left = 0;
2218 u8 buf[32];
2219 u32 bitmap = 0;
2220
2221 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2222 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2223
2224 /* Before posting firmware commands that could change the hardware
2225 * characteristics, make sure that all BSSes are stopped temporary.
2226 * Enable these stopped BSSes after completion of the commands
2227 */
2228
2229 rc = mwl8k_fw_lock(hw);
2230 if (rc)
2231 return rc;
2232
2233 if (priv->ap_fw && priv->running_bsses) {
2234 switch (le16_to_cpu(cmd->code)) {
2235 case MWL8K_CMD_SET_RF_CHANNEL:
2236 case MWL8K_CMD_RADIO_CONTROL:
2237 case MWL8K_CMD_RF_TX_POWER:
2238 case MWL8K_CMD_TX_POWER:
2239 case MWL8K_CMD_RF_ANTENNA:
2240 case MWL8K_CMD_RTS_THRESHOLD:
2241 case MWL8K_CMD_MIMO_CONFIG:
2242 bitmap = priv->running_bsses;
2243 mwl8k_enable_bsses(hw, false, bitmap);
2244 break;
2245 }
2246 }
2247
2248 cmd->result = (__force __le16) 0xffff;
2249 dma_size = le16_to_cpu(cmd->length);
2250 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size,
2251 DMA_BIDIRECTIONAL);
2252 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) {
2253 rc = -ENOMEM;
2254 goto exit;
2255 }
2256
2257 priv->hostcmd_wait = &cmd_wait;
2258 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2259 iowrite32(MWL8K_H2A_INT_DOORBELL,
2260 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2261 iowrite32(MWL8K_H2A_INT_DUMMY,
2262 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2263
2264 time_left = wait_for_completion_timeout(&cmd_wait,
2265 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2266
2267 priv->hostcmd_wait = NULL;
2268
2269
2270 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size,
2271 DMA_BIDIRECTIONAL);
2272
2273 if (!time_left) {
2274 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2275 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2276 MWL8K_CMD_TIMEOUT_MS);
2277 rc = -ETIMEDOUT;
2278 } else {
2279 int ms;
2280
2281 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(time_left);
2282
2283 rc = cmd->result ? -EINVAL : 0;
2284 if (rc)
2285 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2286 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2287 le16_to_cpu(cmd->result));
2288 else if (ms > 2000)
2289 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2290 mwl8k_cmd_name(cmd->code,
2291 buf, sizeof(buf)),
2292 ms);
2293 }
2294
2295 exit:
2296 if (bitmap)
2297 mwl8k_enable_bsses(hw, true, bitmap);
2298
2299 mwl8k_fw_unlock(hw);
2300
2301 return rc;
2302 }
2303
2304 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2305 struct ieee80211_vif *vif,
2306 struct mwl8k_cmd_pkt_hdr *cmd)
2307 {
2308 if (vif != NULL)
2309 cmd->macid = MWL8K_VIF(vif)->macid;
2310 return mwl8k_post_cmd(hw, cmd);
2311 }
2312
2313 /*
2314 * Setup code shared between STA and AP firmware images.
2315 */
2316 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2317 {
2318 struct mwl8k_priv *priv = hw->priv;
2319
2320 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2321 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2322
2323 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2324 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2325
2326 priv->band_24.band = NL80211_BAND_2GHZ;
2327 priv->band_24.channels = priv->channels_24;
2328 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2329 priv->band_24.bitrates = priv->rates_24;
2330 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2331
2332 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24;
2333 }
2334
2335 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2336 {
2337 struct mwl8k_priv *priv = hw->priv;
2338
2339 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2340 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2341
2342 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2343 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2344
2345 priv->band_50.band = NL80211_BAND_5GHZ;
2346 priv->band_50.channels = priv->channels_50;
2347 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2348 priv->band_50.bitrates = priv->rates_50;
2349 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2350
2351 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50;
2352 }
2353
2354 /*
2355 * CMD_GET_HW_SPEC (STA version).
2356 */
2357 struct mwl8k_cmd_get_hw_spec_sta {
2358 struct mwl8k_cmd_pkt_hdr header;
2359 __u8 hw_rev;
2360 __u8 host_interface;
2361 __le16 num_mcaddrs;
2362 __u8 perm_addr[ETH_ALEN];
2363 __le16 region_code;
2364 __le32 fw_rev;
2365 __le32 ps_cookie;
2366 __le32 caps;
2367 __u8 mcs_bitmap[16];
2368 __le32 rx_queue_ptr;
2369 __le32 num_tx_queues;
2370 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2371 __le32 caps2;
2372 __le32 num_tx_desc_per_queue;
2373 __le32 total_rxd;
2374 } __packed;
2375
2376 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2377 #define MWL8K_CAP_GREENFIELD 0x08000000
2378 #define MWL8K_CAP_AMPDU 0x04000000
2379 #define MWL8K_CAP_RX_STBC 0x01000000
2380 #define MWL8K_CAP_TX_STBC 0x00800000
2381 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2382 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2383 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2384 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2385 #define MWL8K_CAP_DELAY_BA 0x00003000
2386 #define MWL8K_CAP_MIMO 0x00000200
2387 #define MWL8K_CAP_40MHZ 0x00000100
2388 #define MWL8K_CAP_BAND_MASK 0x00000007
2389 #define MWL8K_CAP_5GHZ 0x00000004
2390 #define MWL8K_CAP_2GHZ4 0x00000001
2391
2392 static void
2393 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2394 struct ieee80211_supported_band *band, u32 cap)
2395 {
2396 int rx_streams;
2397 int tx_streams;
2398
2399 band->ht_cap.ht_supported = 1;
2400
2401 if (cap & MWL8K_CAP_MAX_AMSDU)
2402 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2403 if (cap & MWL8K_CAP_GREENFIELD)
2404 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2405 if (cap & MWL8K_CAP_AMPDU) {
2406 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2407 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2408 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2409 }
2410 if (cap & MWL8K_CAP_RX_STBC)
2411 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2412 if (cap & MWL8K_CAP_TX_STBC)
2413 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2414 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2415 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2416 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2417 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2418 if (cap & MWL8K_CAP_DELAY_BA)
2419 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2420 if (cap & MWL8K_CAP_40MHZ)
2421 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2422
2423 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2424 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2425
2426 band->ht_cap.mcs.rx_mask[0] = 0xff;
2427 if (rx_streams >= 2)
2428 band->ht_cap.mcs.rx_mask[1] = 0xff;
2429 if (rx_streams >= 3)
2430 band->ht_cap.mcs.rx_mask[2] = 0xff;
2431 band->ht_cap.mcs.rx_mask[4] = 0x01;
2432 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2433
2434 if (rx_streams != tx_streams) {
2435 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2436 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2437 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2438 }
2439 }
2440
2441 static void
2442 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2443 {
2444 struct mwl8k_priv *priv = hw->priv;
2445
2446 if (priv->caps)
2447 return;
2448
2449 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2450 mwl8k_setup_2ghz_band(hw);
2451 if (caps & MWL8K_CAP_MIMO)
2452 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2453 }
2454
2455 if (caps & MWL8K_CAP_5GHZ) {
2456 mwl8k_setup_5ghz_band(hw);
2457 if (caps & MWL8K_CAP_MIMO)
2458 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2459 }
2460
2461 priv->caps = caps;
2462 }
2463
2464 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2465 {
2466 struct mwl8k_priv *priv = hw->priv;
2467 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2468 int rc;
2469 int i;
2470
2471 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2472 if (cmd == NULL)
2473 return -ENOMEM;
2474
2475 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2476 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2477
2478 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2479 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2480 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2481 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2482 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2483 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2484 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2485 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2486
2487 rc = mwl8k_post_cmd(hw, &cmd->header);
2488
2489 if (!rc) {
2490 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2491 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2492 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2493 priv->hw_rev = cmd->hw_rev;
2494 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2495 priv->ap_macids_supported = 0x00000000;
2496 priv->sta_macids_supported = 0x00000001;
2497 }
2498
2499 kfree(cmd);
2500 return rc;
2501 }
2502
2503 /*
2504 * CMD_GET_HW_SPEC (AP version).
2505 */
2506 struct mwl8k_cmd_get_hw_spec_ap {
2507 struct mwl8k_cmd_pkt_hdr header;
2508 __u8 hw_rev;
2509 __u8 host_interface;
2510 __le16 num_wcb;
2511 __le16 num_mcaddrs;
2512 __u8 perm_addr[ETH_ALEN];
2513 __le16 region_code;
2514 __le16 num_antenna;
2515 __le32 fw_rev;
2516 __le32 wcbbase0;
2517 __le32 rxwrptr;
2518 __le32 rxrdptr;
2519 __le32 ps_cookie;
2520 __le32 wcbbase1;
2521 __le32 wcbbase2;
2522 __le32 wcbbase3;
2523 __le32 fw_api_version;
2524 __le32 caps;
2525 __le32 num_of_ampdu_queues;
2526 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2527 } __packed;
2528
2529 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2530 {
2531 struct mwl8k_priv *priv = hw->priv;
2532 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2533 int rc, i;
2534 u32 api_version;
2535
2536 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2537 if (cmd == NULL)
2538 return -ENOMEM;
2539
2540 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2541 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2542
2543 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2544 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2545
2546 rc = mwl8k_post_cmd(hw, &cmd->header);
2547
2548 if (!rc) {
2549 int off;
2550
2551 api_version = le32_to_cpu(cmd->fw_api_version);
2552 if (priv->device_info->fw_api_ap != api_version) {
2553 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2554 " Expected %d got %d.\n", MWL8K_NAME,
2555 priv->device_info->part_name,
2556 priv->device_info->fw_api_ap,
2557 api_version);
2558 rc = -EINVAL;
2559 goto done;
2560 }
2561 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2562 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2563 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2564 priv->hw_rev = cmd->hw_rev;
2565 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2566 priv->ap_macids_supported = 0x000000ff;
2567 priv->sta_macids_supported = 0x00000100;
2568 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2569 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2570 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2571 " but we only support %d.\n",
2572 priv->num_ampdu_queues,
2573 MWL8K_MAX_AMPDU_QUEUES);
2574 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2575 }
2576 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2577 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2578
2579 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2580 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2581
2582 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2583 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2584 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2585 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2586
2587 for (i = 0; i < priv->num_ampdu_queues; i++)
2588 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2589 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2590 }
2591
2592 done:
2593 kfree(cmd);
2594 return rc;
2595 }
2596
2597 /*
2598 * CMD_SET_HW_SPEC.
2599 */
2600 struct mwl8k_cmd_set_hw_spec {
2601 struct mwl8k_cmd_pkt_hdr header;
2602 __u8 hw_rev;
2603 __u8 host_interface;
2604 __le16 num_mcaddrs;
2605 __u8 perm_addr[ETH_ALEN];
2606 __le16 region_code;
2607 __le32 fw_rev;
2608 __le32 ps_cookie;
2609 __le32 caps;
2610 __le32 rx_queue_ptr;
2611 __le32 num_tx_queues;
2612 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2613 __le32 flags;
2614 __le32 num_tx_desc_per_queue;
2615 __le32 total_rxd;
2616 } __packed;
2617
2618 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2619 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2620 * the packets that are queued for more than 500ms, will be dropped in the
2621 * hardware. This helps minimizing the issues caused due to head-of-line
2622 * blocking where a slow client can hog the bandwidth and affect traffic to a
2623 * faster client.
2624 */
2625 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2626 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2627 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2628 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2629 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2630
2631 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2632 {
2633 struct mwl8k_priv *priv = hw->priv;
2634 struct mwl8k_cmd_set_hw_spec *cmd;
2635 int rc;
2636 int i;
2637
2638 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2639 if (cmd == NULL)
2640 return -ENOMEM;
2641
2642 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2643 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2644
2645 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2646 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2647 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2648
2649 /*
2650 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2651 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2652 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2653 * priority is interpreted the right way in firmware.
2654 */
2655 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2656 int j = mwl8k_tx_queues(priv) - 1 - i;
2657 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2658 }
2659
2660 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2661 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2662 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2663 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2664 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2665 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2666 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2667
2668 rc = mwl8k_post_cmd(hw, &cmd->header);
2669 kfree(cmd);
2670
2671 return rc;
2672 }
2673
2674 /*
2675 * CMD_MAC_MULTICAST_ADR.
2676 */
2677 struct mwl8k_cmd_mac_multicast_adr {
2678 struct mwl8k_cmd_pkt_hdr header;
2679 __le16 action;
2680 __le16 numaddr;
2681 __u8 addr[][ETH_ALEN];
2682 };
2683
2684 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2685 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2686 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2687 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2688
2689 static struct mwl8k_cmd_pkt_hdr *
2690 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2691 struct netdev_hw_addr_list *mc_list)
2692 {
2693 struct mwl8k_priv *priv = hw->priv;
2694 struct mwl8k_cmd_mac_multicast_adr *cmd;
2695 int size;
2696 int mc_count = 0;
2697
2698 if (mc_list)
2699 mc_count = netdev_hw_addr_list_count(mc_list);
2700
2701 if (allmulti || mc_count > priv->num_mcaddrs) {
2702 allmulti = 1;
2703 mc_count = 0;
2704 }
2705
2706 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2707
2708 cmd = kzalloc(size, GFP_ATOMIC);
2709 if (cmd == NULL)
2710 return NULL;
2711
2712 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2713 cmd->header.length = cpu_to_le16(size);
2714 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2715 MWL8K_ENABLE_RX_BROADCAST);
2716
2717 if (allmulti) {
2718 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2719 } else if (mc_count) {
2720 struct netdev_hw_addr *ha;
2721 int i = 0;
2722
2723 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2724 cmd->numaddr = cpu_to_le16(mc_count);
2725 netdev_hw_addr_list_for_each(ha, mc_list) {
2726 memcpy(cmd->addr[i++], ha->addr, ETH_ALEN);
2727 }
2728 }
2729
2730 return &cmd->header;
2731 }
2732
2733 /*
2734 * CMD_GET_STAT.
2735 */
2736 struct mwl8k_cmd_get_stat {
2737 struct mwl8k_cmd_pkt_hdr header;
2738 __le32 stats[64];
2739 } __packed;
2740
2741 #define MWL8K_STAT_ACK_FAILURE 9
2742 #define MWL8K_STAT_RTS_FAILURE 12
2743 #define MWL8K_STAT_FCS_ERROR 24
2744 #define MWL8K_STAT_RTS_SUCCESS 11
2745
2746 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2747 struct ieee80211_low_level_stats *stats)
2748 {
2749 struct mwl8k_cmd_get_stat *cmd;
2750 int rc;
2751
2752 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2753 if (cmd == NULL)
2754 return -ENOMEM;
2755
2756 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2757 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2758
2759 rc = mwl8k_post_cmd(hw, &cmd->header);
2760 if (!rc) {
2761 stats->dot11ACKFailureCount =
2762 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2763 stats->dot11RTSFailureCount =
2764 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2765 stats->dot11FCSErrorCount =
2766 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2767 stats->dot11RTSSuccessCount =
2768 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2769 }
2770 kfree(cmd);
2771
2772 return rc;
2773 }
2774
2775 /*
2776 * CMD_RADIO_CONTROL.
2777 */
2778 struct mwl8k_cmd_radio_control {
2779 struct mwl8k_cmd_pkt_hdr header;
2780 __le16 action;
2781 __le16 control;
2782 __le16 radio_on;
2783 } __packed;
2784
2785 static int
2786 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2787 {
2788 struct mwl8k_priv *priv = hw->priv;
2789 struct mwl8k_cmd_radio_control *cmd;
2790 int rc;
2791
2792 if (enable == priv->radio_on && !force)
2793 return 0;
2794
2795 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2796 if (cmd == NULL)
2797 return -ENOMEM;
2798
2799 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2800 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2801 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2802 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2803 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2804
2805 rc = mwl8k_post_cmd(hw, &cmd->header);
2806 kfree(cmd);
2807
2808 if (!rc)
2809 priv->radio_on = enable;
2810
2811 return rc;
2812 }
2813
2814 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2815 {
2816 return mwl8k_cmd_radio_control(hw, 0, 0);
2817 }
2818
2819 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2820 {
2821 return mwl8k_cmd_radio_control(hw, 1, 0);
2822 }
2823
2824 static int
2825 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2826 {
2827 struct mwl8k_priv *priv = hw->priv;
2828
2829 priv->radio_short_preamble = short_preamble;
2830
2831 return mwl8k_cmd_radio_control(hw, 1, 1);
2832 }
2833
2834 /*
2835 * CMD_RF_TX_POWER.
2836 */
2837 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2838
2839 struct mwl8k_cmd_rf_tx_power {
2840 struct mwl8k_cmd_pkt_hdr header;
2841 __le16 action;
2842 __le16 support_level;
2843 __le16 current_level;
2844 __le16 reserved;
2845 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2846 } __packed;
2847
2848 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2849 {
2850 struct mwl8k_cmd_rf_tx_power *cmd;
2851 int rc;
2852
2853 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2854 if (cmd == NULL)
2855 return -ENOMEM;
2856
2857 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2858 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2859 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2860 cmd->support_level = cpu_to_le16(dBm);
2861
2862 rc = mwl8k_post_cmd(hw, &cmd->header);
2863 kfree(cmd);
2864
2865 return rc;
2866 }
2867
2868 /*
2869 * CMD_TX_POWER.
2870 */
2871 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2872
2873 struct mwl8k_cmd_tx_power {
2874 struct mwl8k_cmd_pkt_hdr header;
2875 __le16 action;
2876 __le16 band;
2877 __le16 channel;
2878 __le16 bw;
2879 __le16 sub_ch;
2880 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2881 } __packed;
2882
2883 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2884 struct ieee80211_conf *conf,
2885 unsigned short pwr)
2886 {
2887 struct ieee80211_channel *channel = conf->chandef.chan;
2888 enum nl80211_channel_type channel_type =
2889 cfg80211_get_chandef_type(&conf->chandef);
2890 struct mwl8k_cmd_tx_power *cmd;
2891 int rc;
2892 int i;
2893
2894 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2895 if (cmd == NULL)
2896 return -ENOMEM;
2897
2898 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2899 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2900 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2901
2902 if (channel->band == NL80211_BAND_2GHZ)
2903 cmd->band = cpu_to_le16(0x1);
2904 else if (channel->band == NL80211_BAND_5GHZ)
2905 cmd->band = cpu_to_le16(0x4);
2906
2907 cmd->channel = cpu_to_le16(channel->hw_value);
2908
2909 if (channel_type == NL80211_CHAN_NO_HT ||
2910 channel_type == NL80211_CHAN_HT20) {
2911 cmd->bw = cpu_to_le16(0x2);
2912 } else {
2913 cmd->bw = cpu_to_le16(0x4);
2914 if (channel_type == NL80211_CHAN_HT40MINUS)
2915 cmd->sub_ch = cpu_to_le16(0x3);
2916 else if (channel_type == NL80211_CHAN_HT40PLUS)
2917 cmd->sub_ch = cpu_to_le16(0x1);
2918 }
2919
2920 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2921 cmd->power_level_list[i] = cpu_to_le16(pwr);
2922
2923 rc = mwl8k_post_cmd(hw, &cmd->header);
2924 kfree(cmd);
2925
2926 return rc;
2927 }
2928
2929 /*
2930 * CMD_RF_ANTENNA.
2931 */
2932 struct mwl8k_cmd_rf_antenna {
2933 struct mwl8k_cmd_pkt_hdr header;
2934 __le16 antenna;
2935 __le16 mode;
2936 } __packed;
2937
2938 #define MWL8K_RF_ANTENNA_RX 1
2939 #define MWL8K_RF_ANTENNA_TX 2
2940
2941 static int
2942 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2943 {
2944 struct mwl8k_cmd_rf_antenna *cmd;
2945 int rc;
2946
2947 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2948 if (cmd == NULL)
2949 return -ENOMEM;
2950
2951 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2952 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2953 cmd->antenna = cpu_to_le16(antenna);
2954 cmd->mode = cpu_to_le16(mask);
2955
2956 rc = mwl8k_post_cmd(hw, &cmd->header);
2957 kfree(cmd);
2958
2959 return rc;
2960 }
2961
2962 /*
2963 * CMD_SET_BEACON.
2964 */
2965 struct mwl8k_cmd_set_beacon {
2966 struct mwl8k_cmd_pkt_hdr header;
2967 __le16 beacon_len;
2968 __u8 beacon[];
2969 };
2970
2971 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2972 struct ieee80211_vif *vif, u8 *beacon, int len)
2973 {
2974 struct mwl8k_cmd_set_beacon *cmd;
2975 int rc;
2976
2977 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2978 if (cmd == NULL)
2979 return -ENOMEM;
2980
2981 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2982 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2983 cmd->beacon_len = cpu_to_le16(len);
2984 memcpy(cmd->beacon, beacon, len);
2985
2986 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2987 kfree(cmd);
2988
2989 return rc;
2990 }
2991
2992 /*
2993 * CMD_SET_PRE_SCAN.
2994 */
2995 struct mwl8k_cmd_set_pre_scan {
2996 struct mwl8k_cmd_pkt_hdr header;
2997 } __packed;
2998
2999 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
3000 {
3001 struct mwl8k_cmd_set_pre_scan *cmd;
3002 int rc;
3003
3004 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3005 if (cmd == NULL)
3006 return -ENOMEM;
3007
3008 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
3009 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3010
3011 rc = mwl8k_post_cmd(hw, &cmd->header);
3012 kfree(cmd);
3013
3014 return rc;
3015 }
3016
3017 /*
3018 * CMD_BBP_REG_ACCESS.
3019 */
3020 struct mwl8k_cmd_bbp_reg_access {
3021 struct mwl8k_cmd_pkt_hdr header;
3022 __le16 action;
3023 __le16 offset;
3024 u8 value;
3025 u8 rsrv[3];
3026 } __packed;
3027
3028 static int
3029 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
3030 u16 action,
3031 u16 offset,
3032 u8 *value)
3033 {
3034 struct mwl8k_cmd_bbp_reg_access *cmd;
3035 int rc;
3036
3037 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3038 if (cmd == NULL)
3039 return -ENOMEM;
3040
3041 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
3042 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3043 cmd->action = cpu_to_le16(action);
3044 cmd->offset = cpu_to_le16(offset);
3045
3046 rc = mwl8k_post_cmd(hw, &cmd->header);
3047
3048 if (!rc)
3049 *value = cmd->value;
3050 else
3051 *value = 0;
3052
3053 kfree(cmd);
3054
3055 return rc;
3056 }
3057
3058 /*
3059 * CMD_SET_POST_SCAN.
3060 */
3061 struct mwl8k_cmd_set_post_scan {
3062 struct mwl8k_cmd_pkt_hdr header;
3063 __le32 isibss;
3064 __u8 bssid[ETH_ALEN];
3065 } __packed;
3066
3067 static int
3068 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
3069 {
3070 struct mwl8k_cmd_set_post_scan *cmd;
3071 int rc;
3072
3073 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3074 if (cmd == NULL)
3075 return -ENOMEM;
3076
3077 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3078 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3079 cmd->isibss = 0;
3080 memcpy(cmd->bssid, mac, ETH_ALEN);
3081
3082 rc = mwl8k_post_cmd(hw, &cmd->header);
3083 kfree(cmd);
3084
3085 return rc;
3086 }
3087
3088 static int freq_to_idx(struct mwl8k_priv *priv, int freq)
3089 {
3090 struct ieee80211_supported_band *sband;
3091 int band, ch, idx = 0;
3092
3093 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3094 sband = priv->hw->wiphy->bands[band];
3095 if (!sband)
3096 continue;
3097
3098 for (ch = 0; ch < sband->n_channels; ch++, idx++)
3099 if (sband->channels[ch].center_freq == freq)
3100 goto exit;
3101 }
3102
3103 exit:
3104 return idx;
3105 }
3106
3107 static void mwl8k_update_survey(struct mwl8k_priv *priv,
3108 struct ieee80211_channel *channel)
3109 {
3110 u32 cca_cnt, rx_rdy;
3111 s8 nf = 0, idx;
3112 struct survey_info *survey;
3113
3114 idx = freq_to_idx(priv, priv->acs_chan->center_freq);
3115 if (idx >= MWL8K_NUM_CHANS) {
3116 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
3117 return;
3118 }
3119
3120 survey = &priv->survey[idx];
3121
3122 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
3123 cca_cnt /= 1000; /* uSecs to mSecs */
3124 survey->time_busy = (u64) cca_cnt;
3125
3126 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
3127 rx_rdy /= 1000; /* uSecs to mSecs */
3128 survey->time_rx = (u64) rx_rdy;
3129
3130 priv->channel_time = jiffies - priv->channel_time;
3131 survey->time = jiffies_to_msecs(priv->channel_time);
3132
3133 survey->channel = channel;
3134
3135 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
3136
3137 /* Make sure sign is negative else ACS at hostapd fails */
3138 survey->noise = nf * -1;
3139
3140 survey->filled = SURVEY_INFO_NOISE_DBM |
3141 SURVEY_INFO_TIME |
3142 SURVEY_INFO_TIME_BUSY |
3143 SURVEY_INFO_TIME_RX;
3144 }
3145
3146 /*
3147 * CMD_SET_RF_CHANNEL.
3148 */
3149 struct mwl8k_cmd_set_rf_channel {
3150 struct mwl8k_cmd_pkt_hdr header;
3151 __le16 action;
3152 __u8 current_channel;
3153 __le32 channel_flags;
3154 } __packed;
3155
3156 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3157 struct ieee80211_conf *conf)
3158 {
3159 struct ieee80211_channel *channel = conf->chandef.chan;
3160 enum nl80211_channel_type channel_type =
3161 cfg80211_get_chandef_type(&conf->chandef);
3162 struct mwl8k_cmd_set_rf_channel *cmd;
3163 struct mwl8k_priv *priv = hw->priv;
3164 int rc;
3165
3166 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3167 if (cmd == NULL)
3168 return -ENOMEM;
3169
3170 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3171 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3172 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3173 cmd->current_channel = channel->hw_value;
3174
3175 if (channel->band == NL80211_BAND_2GHZ)
3176 cmd->channel_flags |= cpu_to_le32(0x00000001);
3177 else if (channel->band == NL80211_BAND_5GHZ)
3178 cmd->channel_flags |= cpu_to_le32(0x00000004);
3179
3180 if (!priv->sw_scan_start) {
3181 if (channel_type == NL80211_CHAN_NO_HT ||
3182 channel_type == NL80211_CHAN_HT20)
3183 cmd->channel_flags |= cpu_to_le32(0x00000080);
3184 else if (channel_type == NL80211_CHAN_HT40MINUS)
3185 cmd->channel_flags |= cpu_to_le32(0x000001900);
3186 else if (channel_type == NL80211_CHAN_HT40PLUS)
3187 cmd->channel_flags |= cpu_to_le32(0x000000900);
3188 } else {
3189 cmd->channel_flags |= cpu_to_le32(0x00000080);
3190 }
3191
3192 if (priv->sw_scan_start) {
3193 /* Store current channel stats
3194 * before switching to newer one.
3195 * This will be processed only for AP fw.
3196 */
3197 if (priv->channel_time != 0)
3198 mwl8k_update_survey(priv, priv->acs_chan);
3199
3200 priv->channel_time = jiffies;
3201 priv->acs_chan = channel;
3202 }
3203
3204 rc = mwl8k_post_cmd(hw, &cmd->header);
3205 kfree(cmd);
3206
3207 return rc;
3208 }
3209
3210 /*
3211 * CMD_SET_AID.
3212 */
3213 #define MWL8K_FRAME_PROT_DISABLED 0x00
3214 #define MWL8K_FRAME_PROT_11G 0x07
3215 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
3216 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
3217
3218 struct mwl8k_cmd_update_set_aid {
3219 struct mwl8k_cmd_pkt_hdr header;
3220 __le16 aid;
3221
3222 /* AP's MAC address (BSSID) */
3223 __u8 bssid[ETH_ALEN];
3224 __le16 protection_mode;
3225 __u8 supp_rates[14];
3226 } __packed;
3227
3228 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3229 {
3230 int i;
3231 int j;
3232
3233 /*
3234 * Clear nonstandard rate 4.
3235 */
3236 mask &= 0x1fef;
3237
3238 for (i = 0, j = 0; i < 13; i++) {
3239 if (mask & (1 << i))
3240 rates[j++] = mwl8k_rates_24[i].hw_value;
3241 }
3242 }
3243
3244 static int
3245 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3246 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3247 {
3248 struct mwl8k_cmd_update_set_aid *cmd;
3249 u16 prot_mode;
3250 int rc;
3251
3252 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3253 if (cmd == NULL)
3254 return -ENOMEM;
3255
3256 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3257 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3258 cmd->aid = cpu_to_le16(vif->cfg.aid);
3259 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3260
3261 if (vif->bss_conf.use_cts_prot) {
3262 prot_mode = MWL8K_FRAME_PROT_11G;
3263 } else {
3264 switch (vif->bss_conf.ht_operation_mode &
3265 IEEE80211_HT_OP_MODE_PROTECTION) {
3266 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3267 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3268 break;
3269 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3270 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3271 break;
3272 default:
3273 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3274 break;
3275 }
3276 }
3277 cmd->protection_mode = cpu_to_le16(prot_mode);
3278
3279 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3280
3281 rc = mwl8k_post_cmd(hw, &cmd->header);
3282 kfree(cmd);
3283
3284 return rc;
3285 }
3286
3287 /*
3288 * CMD_SET_RATE.
3289 */
3290 struct mwl8k_cmd_set_rate {
3291 struct mwl8k_cmd_pkt_hdr header;
3292 __u8 legacy_rates[14];
3293
3294 /* Bitmap for supported MCS codes. */
3295 __u8 mcs_set[16];
3296 __u8 reserved[16];
3297 } __packed;
3298
3299 static int
3300 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3301 u32 legacy_rate_mask, u8 *mcs_rates)
3302 {
3303 struct mwl8k_cmd_set_rate *cmd;
3304 int rc;
3305
3306 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3307 if (cmd == NULL)
3308 return -ENOMEM;
3309
3310 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3311 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3312 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3313 memcpy(cmd->mcs_set, mcs_rates, 16);
3314
3315 rc = mwl8k_post_cmd(hw, &cmd->header);
3316 kfree(cmd);
3317
3318 return rc;
3319 }
3320
3321 /*
3322 * CMD_FINALIZE_JOIN.
3323 */
3324 #define MWL8K_FJ_BEACON_MAXLEN 128
3325
3326 struct mwl8k_cmd_finalize_join {
3327 struct mwl8k_cmd_pkt_hdr header;
3328 __le32 sleep_interval; /* Number of beacon periods to sleep */
3329 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3330 } __packed;
3331
3332 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3333 int framelen, int dtim)
3334 {
3335 struct mwl8k_cmd_finalize_join *cmd;
3336 struct ieee80211_mgmt *payload = frame;
3337 int payload_len;
3338 int rc;
3339
3340 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3341 if (cmd == NULL)
3342 return -ENOMEM;
3343
3344 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3345 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3346 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3347
3348 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3349 if (payload_len < 0)
3350 payload_len = 0;
3351 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3352 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3353
3354 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3355
3356 rc = mwl8k_post_cmd(hw, &cmd->header);
3357 kfree(cmd);
3358
3359 return rc;
3360 }
3361
3362 /*
3363 * CMD_SET_RTS_THRESHOLD.
3364 */
3365 struct mwl8k_cmd_set_rts_threshold {
3366 struct mwl8k_cmd_pkt_hdr header;
3367 __le16 action;
3368 __le16 threshold;
3369 } __packed;
3370
3371 static int
3372 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3373 {
3374 struct mwl8k_cmd_set_rts_threshold *cmd;
3375 int rc;
3376
3377 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3378 if (cmd == NULL)
3379 return -ENOMEM;
3380
3381 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3382 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3383 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3384 cmd->threshold = cpu_to_le16(rts_thresh);
3385
3386 rc = mwl8k_post_cmd(hw, &cmd->header);
3387 kfree(cmd);
3388
3389 return rc;
3390 }
3391
3392 /*
3393 * CMD_SET_SLOT.
3394 */
3395 struct mwl8k_cmd_set_slot {
3396 struct mwl8k_cmd_pkt_hdr header;
3397 __le16 action;
3398 __u8 short_slot;
3399 } __packed;
3400
3401 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3402 {
3403 struct mwl8k_cmd_set_slot *cmd;
3404 int rc;
3405
3406 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3407 if (cmd == NULL)
3408 return -ENOMEM;
3409
3410 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3411 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3412 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3413 cmd->short_slot = short_slot_time;
3414
3415 rc = mwl8k_post_cmd(hw, &cmd->header);
3416 kfree(cmd);
3417
3418 return rc;
3419 }
3420
3421 /*
3422 * CMD_SET_EDCA_PARAMS.
3423 */
3424 struct mwl8k_cmd_set_edca_params {
3425 struct mwl8k_cmd_pkt_hdr header;
3426
3427 /* See MWL8K_SET_EDCA_XXX below */
3428 __le16 action;
3429
3430 /* TX opportunity in units of 32 us */
3431 __le16 txop;
3432
3433 union {
3434 struct {
3435 /* Log exponent of max contention period: 0...15 */
3436 __le32 log_cw_max;
3437
3438 /* Log exponent of min contention period: 0...15 */
3439 __le32 log_cw_min;
3440
3441 /* Adaptive interframe spacing in units of 32us */
3442 __u8 aifs;
3443
3444 /* TX queue to configure */
3445 __u8 txq;
3446 } ap;
3447 struct {
3448 /* Log exponent of max contention period: 0...15 */
3449 __u8 log_cw_max;
3450
3451 /* Log exponent of min contention period: 0...15 */
3452 __u8 log_cw_min;
3453
3454 /* Adaptive interframe spacing in units of 32us */
3455 __u8 aifs;
3456
3457 /* TX queue to configure */
3458 __u8 txq;
3459 } sta;
3460 };
3461 } __packed;
3462
3463 #define MWL8K_SET_EDCA_CW 0x01
3464 #define MWL8K_SET_EDCA_TXOP 0x02
3465 #define MWL8K_SET_EDCA_AIFS 0x04
3466
3467 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3468 MWL8K_SET_EDCA_TXOP | \
3469 MWL8K_SET_EDCA_AIFS)
3470
3471 static int
3472 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3473 __u16 cw_min, __u16 cw_max,
3474 __u8 aifs, __u16 txop)
3475 {
3476 struct mwl8k_priv *priv = hw->priv;
3477 struct mwl8k_cmd_set_edca_params *cmd;
3478 int rc;
3479
3480 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3481 if (cmd == NULL)
3482 return -ENOMEM;
3483
3484 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3485 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3486 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3487 cmd->txop = cpu_to_le16(txop);
3488 if (priv->ap_fw) {
3489 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3490 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3491 cmd->ap.aifs = aifs;
3492 cmd->ap.txq = qnum;
3493 } else {
3494 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3495 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3496 cmd->sta.aifs = aifs;
3497 cmd->sta.txq = qnum;
3498 }
3499
3500 rc = mwl8k_post_cmd(hw, &cmd->header);
3501 kfree(cmd);
3502
3503 return rc;
3504 }
3505
3506 /*
3507 * CMD_SET_WMM_MODE.
3508 */
3509 struct mwl8k_cmd_set_wmm_mode {
3510 struct mwl8k_cmd_pkt_hdr header;
3511 __le16 action;
3512 } __packed;
3513
3514 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3515 {
3516 struct mwl8k_priv *priv = hw->priv;
3517 struct mwl8k_cmd_set_wmm_mode *cmd;
3518 int rc;
3519
3520 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3521 if (cmd == NULL)
3522 return -ENOMEM;
3523
3524 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3525 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3526 cmd->action = cpu_to_le16(!!enable);
3527
3528 rc = mwl8k_post_cmd(hw, &cmd->header);
3529 kfree(cmd);
3530
3531 if (!rc)
3532 priv->wmm_enabled = enable;
3533
3534 return rc;
3535 }
3536
3537 /*
3538 * CMD_MIMO_CONFIG.
3539 */
3540 struct mwl8k_cmd_mimo_config {
3541 struct mwl8k_cmd_pkt_hdr header;
3542 __le32 action;
3543 __u8 rx_antenna_map;
3544 __u8 tx_antenna_map;
3545 } __packed;
3546
3547 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3548 {
3549 struct mwl8k_cmd_mimo_config *cmd;
3550 int rc;
3551
3552 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3553 if (cmd == NULL)
3554 return -ENOMEM;
3555
3556 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3557 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3558 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3559 cmd->rx_antenna_map = rx;
3560 cmd->tx_antenna_map = tx;
3561
3562 rc = mwl8k_post_cmd(hw, &cmd->header);
3563 kfree(cmd);
3564
3565 return rc;
3566 }
3567
3568 /*
3569 * CMD_USE_FIXED_RATE (STA version).
3570 */
3571 struct mwl8k_cmd_use_fixed_rate_sta {
3572 struct mwl8k_cmd_pkt_hdr header;
3573 __le32 action;
3574 __le32 allow_rate_drop;
3575 __le32 num_rates;
3576 struct {
3577 __le32 is_ht_rate;
3578 __le32 enable_retry;
3579 __le32 rate;
3580 __le32 retry_count;
3581 } rate_entry[8];
3582 __le32 rate_type;
3583 __le32 reserved1;
3584 __le32 reserved2;
3585 } __packed;
3586
3587 #define MWL8K_USE_AUTO_RATE 0x0002
3588 #define MWL8K_UCAST_RATE 0
3589
3590 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3591 {
3592 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3593 int rc;
3594
3595 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3596 if (cmd == NULL)
3597 return -ENOMEM;
3598
3599 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3600 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3601 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3602 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3603
3604 rc = mwl8k_post_cmd(hw, &cmd->header);
3605 kfree(cmd);
3606
3607 return rc;
3608 }
3609
3610 /*
3611 * CMD_USE_FIXED_RATE (AP version).
3612 */
3613 struct mwl8k_cmd_use_fixed_rate_ap {
3614 struct mwl8k_cmd_pkt_hdr header;
3615 __le32 action;
3616 __le32 allow_rate_drop;
3617 __le32 num_rates;
3618 struct mwl8k_rate_entry_ap {
3619 __le32 is_ht_rate;
3620 __le32 enable_retry;
3621 __le32 rate;
3622 __le32 retry_count;
3623 } rate_entry[4];
3624 u8 multicast_rate;
3625 u8 multicast_rate_type;
3626 u8 management_rate;
3627 } __packed;
3628
3629 static int
3630 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3631 {
3632 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3633 int rc;
3634
3635 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3636 if (cmd == NULL)
3637 return -ENOMEM;
3638
3639 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3640 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3641 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3642 cmd->multicast_rate = mcast;
3643 cmd->management_rate = mgmt;
3644
3645 rc = mwl8k_post_cmd(hw, &cmd->header);
3646 kfree(cmd);
3647
3648 return rc;
3649 }
3650
3651 /*
3652 * CMD_ENABLE_SNIFFER.
3653 */
3654 struct mwl8k_cmd_enable_sniffer {
3655 struct mwl8k_cmd_pkt_hdr header;
3656 __le32 action;
3657 } __packed;
3658
3659 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3660 {
3661 struct mwl8k_cmd_enable_sniffer *cmd;
3662 int rc;
3663
3664 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3665 if (cmd == NULL)
3666 return -ENOMEM;
3667
3668 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3669 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3670 cmd->action = cpu_to_le32(!!enable);
3671
3672 rc = mwl8k_post_cmd(hw, &cmd->header);
3673 kfree(cmd);
3674
3675 return rc;
3676 }
3677
3678 struct mwl8k_cmd_update_mac_addr {
3679 struct mwl8k_cmd_pkt_hdr header;
3680 union {
3681 struct {
3682 __le16 mac_type;
3683 __u8 mac_addr[ETH_ALEN];
3684 } mbss;
3685 __u8 mac_addr[ETH_ALEN];
3686 };
3687 } __packed;
3688
3689 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3690 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3691 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3692 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3693
3694 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3695 struct ieee80211_vif *vif, u8 *mac, bool set)
3696 {
3697 struct mwl8k_priv *priv = hw->priv;
3698 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3699 struct mwl8k_cmd_update_mac_addr *cmd;
3700 int mac_type;
3701 int rc;
3702
3703 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3704 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3705 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3706 if (priv->ap_fw)
3707 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3708 else
3709 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3710 else
3711 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3712 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3713 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3714 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3715 else
3716 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3717 }
3718
3719 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3720 if (cmd == NULL)
3721 return -ENOMEM;
3722
3723 if (set)
3724 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3725 else
3726 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3727
3728 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3729 if (priv->ap_fw) {
3730 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3731 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3732 } else {
3733 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3734 }
3735
3736 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3737 kfree(cmd);
3738
3739 return rc;
3740 }
3741
3742 /*
3743 * MWL8K_CMD_SET_MAC_ADDR.
3744 */
3745 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3746 struct ieee80211_vif *vif, u8 *mac)
3747 {
3748 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3749 }
3750
3751 /*
3752 * MWL8K_CMD_DEL_MAC_ADDR.
3753 */
3754 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3755 struct ieee80211_vif *vif, u8 *mac)
3756 {
3757 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3758 }
3759
3760 /*
3761 * CMD_SET_RATEADAPT_MODE.
3762 */
3763 struct mwl8k_cmd_set_rate_adapt_mode {
3764 struct mwl8k_cmd_pkt_hdr header;
3765 __le16 action;
3766 __le16 mode;
3767 } __packed;
3768
3769 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3770 {
3771 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3772 int rc;
3773
3774 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3775 if (cmd == NULL)
3776 return -ENOMEM;
3777
3778 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3779 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3780 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3781 cmd->mode = cpu_to_le16(mode);
3782
3783 rc = mwl8k_post_cmd(hw, &cmd->header);
3784 kfree(cmd);
3785
3786 return rc;
3787 }
3788
3789 /*
3790 * CMD_GET_WATCHDOG_BITMAP.
3791 */
3792 struct mwl8k_cmd_get_watchdog_bitmap {
3793 struct mwl8k_cmd_pkt_hdr header;
3794 u8 bitmap;
3795 } __packed;
3796
3797 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3798 {
3799 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3800 int rc;
3801
3802 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3803 if (cmd == NULL)
3804 return -ENOMEM;
3805
3806 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3807 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3808
3809 rc = mwl8k_post_cmd(hw, &cmd->header);
3810 if (!rc)
3811 *bitmap = cmd->bitmap;
3812
3813 kfree(cmd);
3814
3815 return rc;
3816 }
3817
3818 #define MWL8K_WMM_QUEUE_NUMBER 3
3819
3820 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3821 u8 idx);
3822
3823 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3824 {
3825 int rc;
3826 u8 bitmap = 0, stream_index;
3827 struct mwl8k_ampdu_stream *streams;
3828 struct mwl8k_priv *priv =
3829 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3830 struct ieee80211_hw *hw = priv->hw;
3831 int i;
3832 u32 status = 0;
3833
3834 mwl8k_fw_lock(hw);
3835
3836 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3837 if (rc)
3838 goto done;
3839
3840 spin_lock(&priv->stream_lock);
3841
3842 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3843 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3844 if (bitmap & (1 << i)) {
3845 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3846 TOTAL_HW_TX_QUEUES;
3847 streams = &priv->ampdu[stream_index];
3848 if (streams->state == AMPDU_STREAM_ACTIVE) {
3849 ieee80211_stop_tx_ba_session(streams->sta,
3850 streams->tid);
3851 spin_unlock(&priv->stream_lock);
3852 mwl8k_destroy_ba(hw, stream_index);
3853 spin_lock(&priv->stream_lock);
3854 }
3855 }
3856 }
3857
3858 spin_unlock(&priv->stream_lock);
3859 done:
3860 atomic_dec(&priv->watchdog_event_pending);
3861 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3862 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3863 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3864 mwl8k_fw_unlock(hw);
3865 return;
3866 }
3867
3868
3869 /*
3870 * CMD_BSS_START.
3871 */
3872 struct mwl8k_cmd_bss_start {
3873 struct mwl8k_cmd_pkt_hdr header;
3874 __le32 enable;
3875 } __packed;
3876
3877 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3878 struct ieee80211_vif *vif, int enable)
3879 {
3880 struct mwl8k_cmd_bss_start *cmd;
3881 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3882 struct mwl8k_priv *priv = hw->priv;
3883 int rc;
3884
3885 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3886 return 0;
3887
3888 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3889 return 0;
3890
3891 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3892 if (cmd == NULL)
3893 return -ENOMEM;
3894
3895 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3896 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3897 cmd->enable = cpu_to_le32(enable);
3898
3899 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3900 kfree(cmd);
3901
3902 if (!rc) {
3903 if (enable)
3904 priv->running_bsses |= (1 << mwl8k_vif->macid);
3905 else
3906 priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3907 }
3908 return rc;
3909 }
3910
3911 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3912 {
3913 struct mwl8k_priv *priv = hw->priv;
3914 struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3915 struct ieee80211_vif *vif;
3916
3917 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3918 vif = mwl8k_vif->vif;
3919
3920 if (!(bitmap & (1 << mwl8k_vif->macid)))
3921 continue;
3922
3923 if (vif->type == NL80211_IFTYPE_AP)
3924 mwl8k_cmd_bss_start(hw, vif, enable);
3925 }
3926 }
3927 /*
3928 * CMD_BASTREAM.
3929 */
3930
3931 /*
3932 * UPSTREAM is tx direction
3933 */
3934 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3935 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3936
3937 enum ba_stream_action_type {
3938 MWL8K_BA_CREATE,
3939 MWL8K_BA_UPDATE,
3940 MWL8K_BA_DESTROY,
3941 MWL8K_BA_FLUSH,
3942 MWL8K_BA_CHECK,
3943 };
3944
3945
3946 struct mwl8k_create_ba_stream {
3947 __le32 flags;
3948 __le32 idle_thrs;
3949 __le32 bar_thrs;
3950 __le32 window_size;
3951 u8 peer_mac_addr[6];
3952 u8 dialog_token;
3953 u8 tid;
3954 u8 queue_id;
3955 u8 param_info;
3956 __le32 ba_context;
3957 u8 reset_seq_no_flag;
3958 __le16 curr_seq_no;
3959 u8 sta_src_mac_addr[6];
3960 } __packed;
3961
3962 struct mwl8k_destroy_ba_stream {
3963 __le32 flags;
3964 __le32 ba_context;
3965 } __packed;
3966
3967 struct mwl8k_cmd_bastream {
3968 struct mwl8k_cmd_pkt_hdr header;
3969 __le32 action;
3970 union {
3971 struct mwl8k_create_ba_stream create_params;
3972 struct mwl8k_destroy_ba_stream destroy_params;
3973 };
3974 } __packed;
3975
3976 static int
3977 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3978 struct ieee80211_vif *vif)
3979 {
3980 struct mwl8k_cmd_bastream *cmd;
3981 int rc;
3982
3983 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3984 if (cmd == NULL)
3985 return -ENOMEM;
3986
3987 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3988 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3989
3990 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3991
3992 cmd->create_params.queue_id = stream->idx;
3993 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3994 ETH_ALEN);
3995 cmd->create_params.tid = stream->tid;
3996
3997 cmd->create_params.flags =
3998 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3999 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
4000
4001 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4002
4003 kfree(cmd);
4004
4005 return rc;
4006 }
4007
4008 static int
4009 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
4010 u8 buf_size, struct ieee80211_vif *vif)
4011 {
4012 struct mwl8k_cmd_bastream *cmd;
4013 int rc;
4014
4015 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4016 if (cmd == NULL)
4017 return -ENOMEM;
4018
4019
4020 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4021 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4022
4023 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
4024
4025 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
4026 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
4027 cmd->create_params.queue_id = stream->idx;
4028
4029 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
4030 cmd->create_params.tid = stream->tid;
4031 cmd->create_params.curr_seq_no = cpu_to_le16(0);
4032 cmd->create_params.reset_seq_no_flag = 1;
4033
4034 cmd->create_params.param_info =
4035 (stream->sta->deflink.ht_cap.ampdu_factor &
4036 IEEE80211_HT_AMPDU_PARM_FACTOR) |
4037 ((stream->sta->deflink.ht_cap.ampdu_density << 2) &
4038 IEEE80211_HT_AMPDU_PARM_DENSITY);
4039
4040 cmd->create_params.flags =
4041 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
4042 BASTREAM_FLAG_DIRECTION_UPSTREAM);
4043
4044 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4045
4046 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
4047 stream->sta->addr, stream->tid);
4048 kfree(cmd);
4049
4050 return rc;
4051 }
4052
4053 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
4054 u8 idx)
4055 {
4056 struct mwl8k_cmd_bastream *cmd;
4057
4058 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4059 if (cmd == NULL)
4060 return;
4061
4062 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4063 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4064 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
4065
4066 cmd->destroy_params.ba_context = cpu_to_le32(idx);
4067 mwl8k_post_cmd(hw, &cmd->header);
4068
4069 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
4070
4071 kfree(cmd);
4072 }
4073
4074 /*
4075 * CMD_SET_NEW_STN.
4076 */
4077 struct mwl8k_cmd_set_new_stn {
4078 struct mwl8k_cmd_pkt_hdr header;
4079 __le16 aid;
4080 __u8 mac_addr[6];
4081 __le16 stn_id;
4082 __le16 action;
4083 __le16 rsvd;
4084 __le32 legacy_rates;
4085 __u8 ht_rates[4];
4086 __le16 cap_info;
4087 __le16 ht_capabilities_info;
4088 __u8 mac_ht_param_info;
4089 __u8 rev;
4090 __u8 control_channel;
4091 __u8 add_channel;
4092 __le16 op_mode;
4093 __le16 stbc;
4094 __u8 add_qos_info;
4095 __u8 is_qos_sta;
4096 __le32 fw_sta_ptr;
4097 } __packed;
4098
4099 #define MWL8K_STA_ACTION_ADD 0
4100 #define MWL8K_STA_ACTION_REMOVE 2
4101
4102 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
4103 struct ieee80211_vif *vif,
4104 struct ieee80211_sta *sta)
4105 {
4106 struct mwl8k_cmd_set_new_stn *cmd;
4107 u32 rates;
4108 int rc;
4109
4110 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4111 if (cmd == NULL)
4112 return -ENOMEM;
4113
4114 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4115 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4116 cmd->aid = cpu_to_le16(sta->aid);
4117 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
4118 cmd->stn_id = cpu_to_le16(sta->aid);
4119 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
4120 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4121 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];
4122 else
4123 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
4124 cmd->legacy_rates = cpu_to_le32(rates);
4125 if (sta->deflink.ht_cap.ht_supported) {
4126 cmd->ht_rates[0] = sta->deflink.ht_cap.mcs.rx_mask[0];
4127 cmd->ht_rates[1] = sta->deflink.ht_cap.mcs.rx_mask[1];
4128 cmd->ht_rates[2] = sta->deflink.ht_cap.mcs.rx_mask[2];
4129 cmd->ht_rates[3] = sta->deflink.ht_cap.mcs.rx_mask[3];
4130 cmd->ht_capabilities_info = cpu_to_le16(sta->deflink.ht_cap.cap);
4131 cmd->mac_ht_param_info = (sta->deflink.ht_cap.ampdu_factor & 3) |
4132 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);
4133 cmd->is_qos_sta = 1;
4134 }
4135
4136 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4137 kfree(cmd);
4138
4139 return rc;
4140 }
4141
4142 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
4143 struct ieee80211_vif *vif)
4144 {
4145 struct mwl8k_cmd_set_new_stn *cmd;
4146 int rc;
4147
4148 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4149 if (cmd == NULL)
4150 return -ENOMEM;
4151
4152 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4153 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4154 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4155
4156 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4157 kfree(cmd);
4158
4159 return rc;
4160 }
4161
4162 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4163 struct ieee80211_vif *vif, u8 *addr)
4164 {
4165 struct mwl8k_cmd_set_new_stn *cmd;
4166 struct mwl8k_priv *priv = hw->priv;
4167 int rc, i;
4168 u8 idx;
4169
4170 spin_lock(&priv->stream_lock);
4171 /* Destroy any active ampdu streams for this sta */
4172 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4173 struct mwl8k_ampdu_stream *s;
4174 s = &priv->ampdu[i];
4175 if (s->state != AMPDU_NO_STREAM) {
4176 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4177 if (s->state == AMPDU_STREAM_ACTIVE) {
4178 idx = s->idx;
4179 spin_unlock(&priv->stream_lock);
4180 mwl8k_destroy_ba(hw, idx);
4181 spin_lock(&priv->stream_lock);
4182 } else if (s->state == AMPDU_STREAM_NEW) {
4183 mwl8k_remove_stream(hw, s);
4184 }
4185 }
4186 }
4187 }
4188
4189 spin_unlock(&priv->stream_lock);
4190
4191 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4192 if (cmd == NULL)
4193 return -ENOMEM;
4194
4195 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4196 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4197 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4198 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4199
4200 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4201 kfree(cmd);
4202
4203 return rc;
4204 }
4205
4206 /*
4207 * CMD_UPDATE_ENCRYPTION.
4208 */
4209
4210 #define MAX_ENCR_KEY_LENGTH 16
4211 #define MIC_KEY_LENGTH 8
4212
4213 struct mwl8k_cmd_update_encryption {
4214 struct mwl8k_cmd_pkt_hdr header;
4215
4216 __le32 action;
4217 __le32 reserved;
4218 __u8 mac_addr[6];
4219 __u8 encr_type;
4220
4221 } __packed;
4222
4223 struct mwl8k_cmd_set_key {
4224 struct mwl8k_cmd_pkt_hdr header;
4225
4226 __le32 action;
4227 __le32 reserved;
4228 __le16 length;
4229 __le16 key_type_id;
4230 __le32 key_info;
4231 __le32 key_id;
4232 __le16 key_len;
4233 struct {
4234 __u8 key_material[MAX_ENCR_KEY_LENGTH];
4235 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4236 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4237 } tkip;
4238 __le16 tkip_rsc_low;
4239 __le32 tkip_rsc_high;
4240 __le16 tkip_tsc_low;
4241 __le32 tkip_tsc_high;
4242 __u8 mac_addr[6];
4243 } __packed;
4244
4245 enum {
4246 MWL8K_ENCR_ENABLE,
4247 MWL8K_ENCR_SET_KEY,
4248 MWL8K_ENCR_REMOVE_KEY,
4249 MWL8K_ENCR_SET_GROUP_KEY,
4250 };
4251
4252 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
4253 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
4254 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
4255 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
4256 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
4257
4258 enum {
4259 MWL8K_ALG_WEP,
4260 MWL8K_ALG_TKIP,
4261 MWL8K_ALG_CCMP,
4262 };
4263
4264 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
4265 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
4266 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
4267 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
4268 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
4269
4270 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4271 struct ieee80211_vif *vif,
4272 u8 *addr,
4273 u8 encr_type)
4274 {
4275 struct mwl8k_cmd_update_encryption *cmd;
4276 int rc;
4277
4278 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4279 if (cmd == NULL)
4280 return -ENOMEM;
4281
4282 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4283 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4284 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4285 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4286 cmd->encr_type = encr_type;
4287
4288 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4289 kfree(cmd);
4290
4291 return rc;
4292 }
4293
4294 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4295 u8 *addr,
4296 struct ieee80211_key_conf *key)
4297 {
4298 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4299 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4300 cmd->length = cpu_to_le16(sizeof(*cmd) -
4301 offsetof(struct mwl8k_cmd_set_key, length));
4302 cmd->key_id = cpu_to_le32(key->keyidx);
4303 cmd->key_len = cpu_to_le16(key->keylen);
4304 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4305
4306 switch (key->cipher) {
4307 case WLAN_CIPHER_SUITE_WEP40:
4308 case WLAN_CIPHER_SUITE_WEP104:
4309 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4310 if (key->keyidx == 0)
4311 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4312
4313 break;
4314 case WLAN_CIPHER_SUITE_TKIP:
4315 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4316 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4317 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4318 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4319 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4320 | MWL8K_KEY_FLAG_TSC_VALID);
4321 break;
4322 case WLAN_CIPHER_SUITE_CCMP:
4323 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4324 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4325 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4326 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4327 break;
4328 default:
4329 return -ENOTSUPP;
4330 }
4331
4332 return 0;
4333 }
4334
4335 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4336 struct ieee80211_vif *vif,
4337 u8 *addr,
4338 struct ieee80211_key_conf *key)
4339 {
4340 struct mwl8k_cmd_set_key *cmd;
4341 int rc;
4342 int keymlen;
4343 u32 action;
4344 u8 idx;
4345 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4346
4347 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4348 if (cmd == NULL)
4349 return -ENOMEM;
4350
4351 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4352 if (rc < 0)
4353 goto done;
4354
4355 idx = key->keyidx;
4356
4357 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4358 action = MWL8K_ENCR_SET_KEY;
4359 else
4360 action = MWL8K_ENCR_SET_GROUP_KEY;
4361
4362 switch (key->cipher) {
4363 case WLAN_CIPHER_SUITE_WEP40:
4364 case WLAN_CIPHER_SUITE_WEP104:
4365 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4366 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4367 sizeof(*key) + key->keylen);
4368 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4369 }
4370
4371 keymlen = key->keylen;
4372 action = MWL8K_ENCR_SET_KEY;
4373 break;
4374 case WLAN_CIPHER_SUITE_TKIP:
4375 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4376 break;
4377 case WLAN_CIPHER_SUITE_CCMP:
4378 keymlen = key->keylen;
4379 break;
4380 default:
4381 rc = -ENOTSUPP;
4382 goto done;
4383 }
4384
4385 memcpy(&cmd->tkip, key->key, keymlen);
4386 cmd->action = cpu_to_le32(action);
4387
4388 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4389 done:
4390 kfree(cmd);
4391
4392 return rc;
4393 }
4394
4395 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4396 struct ieee80211_vif *vif,
4397 u8 *addr,
4398 struct ieee80211_key_conf *key)
4399 {
4400 struct mwl8k_cmd_set_key *cmd;
4401 int rc;
4402 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4403
4404 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4405 if (cmd == NULL)
4406 return -ENOMEM;
4407
4408 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4409 if (rc < 0)
4410 goto done;
4411
4412 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4413 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4414 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4415
4416 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4417
4418 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4419 done:
4420 kfree(cmd);
4421
4422 return rc;
4423 }
4424
4425 static int mwl8k_set_key(struct ieee80211_hw *hw,
4426 enum set_key_cmd cmd_param,
4427 struct ieee80211_vif *vif,
4428 struct ieee80211_sta *sta,
4429 struct ieee80211_key_conf *key)
4430 {
4431 int rc = 0;
4432 u8 encr_type;
4433 u8 *addr;
4434 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4435 struct mwl8k_priv *priv = hw->priv;
4436
4437 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4438 return -EOPNOTSUPP;
4439
4440 if (sta == NULL)
4441 addr = vif->addr;
4442 else
4443 addr = sta->addr;
4444
4445 if (cmd_param == SET_KEY) {
4446 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4447 if (rc)
4448 goto out;
4449
4450 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4451 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4452 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4453 else
4454 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4455
4456 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4457 encr_type);
4458 if (rc)
4459 goto out;
4460
4461 mwl8k_vif->is_hw_crypto_enabled = true;
4462
4463 } else {
4464 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4465
4466 if (rc)
4467 goto out;
4468 }
4469 out:
4470 return rc;
4471 }
4472
4473 /*
4474 * CMD_UPDATE_STADB.
4475 */
4476 struct ewc_ht_info {
4477 __le16 control1;
4478 __le16 control2;
4479 __le16 control3;
4480 } __packed;
4481
4482 struct peer_capability_info {
4483 /* Peer type - AP vs. STA. */
4484 __u8 peer_type;
4485
4486 /* Basic 802.11 capabilities from assoc resp. */
4487 __le16 basic_caps;
4488
4489 /* Set if peer supports 802.11n high throughput (HT). */
4490 __u8 ht_support;
4491
4492 /* Valid if HT is supported. */
4493 __le16 ht_caps;
4494 __u8 extended_ht_caps;
4495 struct ewc_ht_info ewc_info;
4496
4497 /* Legacy rate table. Intersection of our rates and peer rates. */
4498 __u8 legacy_rates[12];
4499
4500 /* HT rate table. Intersection of our rates and peer rates. */
4501 __u8 ht_rates[16];
4502 __u8 pad[16];
4503
4504 /* If set, interoperability mode, no proprietary extensions. */
4505 __u8 interop;
4506 __u8 pad2;
4507 __u8 station_id;
4508 __le16 amsdu_enabled;
4509 } __packed;
4510
4511 struct mwl8k_cmd_update_stadb {
4512 struct mwl8k_cmd_pkt_hdr header;
4513
4514 /* See STADB_ACTION_TYPE */
4515 __le32 action;
4516
4517 /* Peer MAC address */
4518 __u8 peer_addr[ETH_ALEN];
4519
4520 __le32 reserved;
4521
4522 /* Peer info - valid during add/update. */
4523 struct peer_capability_info peer_info;
4524 } __packed;
4525
4526 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4527 #define MWL8K_STA_DB_DEL_ENTRY 2
4528
4529 /* Peer Entry flags - used to define the type of the peer node */
4530 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4531
4532 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4533 struct ieee80211_vif *vif,
4534 struct ieee80211_sta *sta)
4535 {
4536 struct mwl8k_cmd_update_stadb *cmd;
4537 struct peer_capability_info *p;
4538 u32 rates;
4539 int rc;
4540
4541 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4542 if (cmd == NULL)
4543 return -ENOMEM;
4544
4545 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4546 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4547 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4548 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4549
4550 p = &cmd->peer_info;
4551 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4552 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4553 p->ht_support = sta->deflink.ht_cap.ht_supported;
4554 p->ht_caps = cpu_to_le16(sta->deflink.ht_cap.cap);
4555 p->extended_ht_caps = (sta->deflink.ht_cap.ampdu_factor & 3) |
4556 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);
4557 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4558 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];
4559 else
4560 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
4561 legacy_rate_mask_to_array(p->legacy_rates, rates);
4562 memcpy(p->ht_rates, &sta->deflink.ht_cap.mcs, 16);
4563 p->interop = 1;
4564 p->amsdu_enabled = 0;
4565
4566 rc = mwl8k_post_cmd(hw, &cmd->header);
4567 if (!rc)
4568 rc = p->station_id;
4569 kfree(cmd);
4570
4571 return rc;
4572 }
4573
4574 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4575 struct ieee80211_vif *vif, u8 *addr)
4576 {
4577 struct mwl8k_cmd_update_stadb *cmd;
4578 int rc;
4579
4580 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4581 if (cmd == NULL)
4582 return -ENOMEM;
4583
4584 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4585 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4586 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4587 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4588
4589 rc = mwl8k_post_cmd(hw, &cmd->header);
4590 kfree(cmd);
4591
4592 return rc;
4593 }
4594
4595
4596 /*
4597 * Interrupt handling.
4598 */
4599 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4600 {
4601 struct ieee80211_hw *hw = dev_id;
4602 struct mwl8k_priv *priv = hw->priv;
4603 u32 status;
4604
4605 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4606 if (!status)
4607 return IRQ_NONE;
4608
4609 if (status & MWL8K_A2H_INT_TX_DONE) {
4610 status &= ~MWL8K_A2H_INT_TX_DONE;
4611 tasklet_schedule(&priv->poll_tx_task);
4612 }
4613
4614 if (status & MWL8K_A2H_INT_RX_READY) {
4615 status &= ~MWL8K_A2H_INT_RX_READY;
4616 tasklet_schedule(&priv->poll_rx_task);
4617 }
4618
4619 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4620 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4621 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4622
4623 atomic_inc(&priv->watchdog_event_pending);
4624 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4625 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4626 }
4627
4628 if (status)
4629 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4630
4631 if (status & MWL8K_A2H_INT_OPC_DONE) {
4632 if (priv->hostcmd_wait != NULL)
4633 complete(priv->hostcmd_wait);
4634 }
4635
4636 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4637 if (!mutex_is_locked(&priv->fw_mutex) &&
4638 priv->radio_on && priv->pending_tx_pkts)
4639 mwl8k_tx_start(priv);
4640 }
4641
4642 return IRQ_HANDLED;
4643 }
4644
4645 static void mwl8k_tx_poll(struct tasklet_struct *t)
4646 {
4647 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task);
4648 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4649 int limit;
4650 int i;
4651
4652 limit = 32;
4653
4654 spin_lock(&priv->tx_lock);
4655
4656 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4657 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4658
4659 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4660 complete(priv->tx_wait);
4661 priv->tx_wait = NULL;
4662 }
4663
4664 spin_unlock(&priv->tx_lock);
4665
4666 if (limit) {
4667 writel(~MWL8K_A2H_INT_TX_DONE,
4668 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4669 } else {
4670 tasklet_schedule(&priv->poll_tx_task);
4671 }
4672 }
4673
4674 static void mwl8k_rx_poll(struct tasklet_struct *t)
4675 {
4676 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task);
4677 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4678 int limit;
4679
4680 limit = 32;
4681 limit -= rxq_process(hw, 0, limit);
4682 limit -= rxq_refill(hw, 0, limit);
4683
4684 if (limit) {
4685 writel(~MWL8K_A2H_INT_RX_READY,
4686 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4687 } else {
4688 tasklet_schedule(&priv->poll_rx_task);
4689 }
4690 }
4691
4692
4693 /*
4694 * Core driver operations.
4695 */
4696 static void mwl8k_tx(struct ieee80211_hw *hw,
4697 struct ieee80211_tx_control *control,
4698 struct sk_buff *skb)
4699 {
4700 struct mwl8k_priv *priv = hw->priv;
4701 int index = skb_get_queue_mapping(skb);
4702
4703 if (!priv->radio_on) {
4704 wiphy_debug(hw->wiphy,
4705 "dropped TX frame since radio disabled\n");
4706 dev_kfree_skb(skb);
4707 return;
4708 }
4709
4710 mwl8k_txq_xmit(hw, index, control->sta, skb);
4711 }
4712
4713 static int mwl8k_start(struct ieee80211_hw *hw)
4714 {
4715 struct mwl8k_priv *priv = hw->priv;
4716 int rc;
4717
4718 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4719 IRQF_SHARED, MWL8K_NAME, hw);
4720 if (rc) {
4721 priv->irq = -1;
4722 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4723 return -EIO;
4724 }
4725 priv->irq = priv->pdev->irq;
4726
4727 /* Enable TX reclaim and RX tasklets. */
4728 tasklet_enable(&priv->poll_tx_task);
4729 tasklet_enable(&priv->poll_rx_task);
4730
4731 /* Enable interrupts */
4732 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4733 iowrite32(MWL8K_A2H_EVENTS,
4734 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4735
4736 rc = mwl8k_fw_lock(hw);
4737 if (!rc) {
4738 rc = mwl8k_cmd_radio_enable(hw);
4739
4740 if (!priv->ap_fw) {
4741 if (!rc)
4742 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4743
4744 if (!rc)
4745 rc = mwl8k_cmd_set_pre_scan(hw);
4746
4747 if (!rc)
4748 rc = mwl8k_cmd_set_post_scan(hw,
4749 "\x00\x00\x00\x00\x00\x00");
4750 }
4751
4752 if (!rc)
4753 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4754
4755 if (!rc)
4756 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4757
4758 mwl8k_fw_unlock(hw);
4759 }
4760
4761 if (rc) {
4762 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4763 free_irq(priv->pdev->irq, hw);
4764 priv->irq = -1;
4765 tasklet_disable(&priv->poll_tx_task);
4766 tasklet_disable(&priv->poll_rx_task);
4767 } else {
4768 ieee80211_wake_queues(hw);
4769 }
4770
4771 return rc;
4772 }
4773
4774 static void mwl8k_stop(struct ieee80211_hw *hw, bool suspend)
4775 {
4776 struct mwl8k_priv *priv = hw->priv;
4777 int i;
4778
4779 if (!priv->hw_restart_in_progress)
4780 mwl8k_cmd_radio_disable(hw);
4781
4782 ieee80211_stop_queues(hw);
4783
4784 /* Disable interrupts */
4785 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4786 if (priv->irq != -1) {
4787 free_irq(priv->pdev->irq, hw);
4788 priv->irq = -1;
4789 }
4790
4791 /* Stop finalize join worker */
4792 cancel_work_sync(&priv->finalize_join_worker);
4793 cancel_work_sync(&priv->watchdog_ba_handle);
4794 if (priv->beacon_skb != NULL)
4795 dev_kfree_skb(priv->beacon_skb);
4796
4797 /* Stop TX reclaim and RX tasklets. */
4798 tasklet_disable(&priv->poll_tx_task);
4799 tasklet_disable(&priv->poll_rx_task);
4800
4801 /* Return all skbs to mac80211 */
4802 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4803 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4804 }
4805
4806 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4807
4808 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4809 struct ieee80211_vif *vif)
4810 {
4811 struct mwl8k_priv *priv = hw->priv;
4812 struct mwl8k_vif *mwl8k_vif;
4813 u32 macids_supported;
4814 int macid, rc;
4815 struct mwl8k_device_info *di;
4816
4817 /*
4818 * Reject interface creation if sniffer mode is active, as
4819 * STA operation is mutually exclusive with hardware sniffer
4820 * mode. (Sniffer mode is only used on STA firmware.)
4821 */
4822 if (priv->sniffer_enabled) {
4823 wiphy_info(hw->wiphy,
4824 "unable to create STA interface because sniffer mode is enabled\n");
4825 return -EINVAL;
4826 }
4827
4828 di = priv->device_info;
4829 switch (vif->type) {
4830 case NL80211_IFTYPE_AP:
4831 if (!priv->ap_fw && di->fw_image_ap) {
4832 /* we must load the ap fw to meet this request */
4833 if (!list_empty(&priv->vif_list))
4834 return -EBUSY;
4835 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4836 if (rc)
4837 return rc;
4838 }
4839 macids_supported = priv->ap_macids_supported;
4840 break;
4841 case NL80211_IFTYPE_STATION:
4842 if (priv->ap_fw && di->fw_image_sta) {
4843 if (!list_empty(&priv->vif_list)) {
4844 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4845 "Adding STA interface for WDS");
4846 } else {
4847 /* we must load the sta fw to
4848 * meet this request.
4849 */
4850 rc = mwl8k_reload_firmware(hw,
4851 di->fw_image_sta);
4852 if (rc)
4853 return rc;
4854 }
4855 }
4856 macids_supported = priv->sta_macids_supported;
4857 break;
4858 default:
4859 return -EINVAL;
4860 }
4861
4862 macid = ffs(macids_supported & ~priv->macids_used);
4863 if (!macid--)
4864 return -EBUSY;
4865
4866 /* Setup driver private area. */
4867 mwl8k_vif = MWL8K_VIF(vif);
4868 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4869 mwl8k_vif->vif = vif;
4870 mwl8k_vif->macid = macid;
4871 mwl8k_vif->seqno = 0;
4872 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4873 mwl8k_vif->is_hw_crypto_enabled = false;
4874
4875 /* Set the mac address. */
4876 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4877
4878 if (vif->type == NL80211_IFTYPE_AP)
4879 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4880
4881 priv->macids_used |= 1 << mwl8k_vif->macid;
4882 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4883
4884 return 0;
4885 }
4886
4887 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4888 {
4889 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4890 if (!priv->macids_used)
4891 return;
4892
4893 priv->macids_used &= ~(1 << vif->macid);
4894 list_del(&vif->list);
4895 }
4896
4897 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4898 struct ieee80211_vif *vif)
4899 {
4900 struct mwl8k_priv *priv = hw->priv;
4901 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4902
4903 if (vif->type == NL80211_IFTYPE_AP)
4904 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4905
4906 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4907
4908 mwl8k_remove_vif(priv, mwl8k_vif);
4909 }
4910
4911 static void mwl8k_hw_restart_work(struct work_struct *work)
4912 {
4913 struct mwl8k_priv *priv =
4914 container_of(work, struct mwl8k_priv, fw_reload);
4915 struct ieee80211_hw *hw = priv->hw;
4916 struct mwl8k_device_info *di;
4917 int rc;
4918
4919 /* If some command is waiting for a response, clear it */
4920 if (priv->hostcmd_wait != NULL) {
4921 complete(priv->hostcmd_wait);
4922 priv->hostcmd_wait = NULL;
4923 }
4924
4925 priv->hw_restart_owner = current;
4926 di = priv->device_info;
4927 mwl8k_fw_lock(hw);
4928
4929 if (priv->ap_fw)
4930 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4931 else
4932 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4933
4934 if (rc)
4935 goto fail;
4936
4937 priv->hw_restart_owner = NULL;
4938 priv->hw_restart_in_progress = false;
4939
4940 /*
4941 * This unlock will wake up the queues and
4942 * also opens the command path for other
4943 * commands
4944 */
4945 mwl8k_fw_unlock(hw);
4946
4947 ieee80211_restart_hw(hw);
4948
4949 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4950
4951 return;
4952 fail:
4953 mwl8k_fw_unlock(hw);
4954
4955 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4956 }
4957
4958 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4959 {
4960 struct ieee80211_conf *conf = &hw->conf;
4961 struct mwl8k_priv *priv = hw->priv;
4962 int rc;
4963
4964 rc = mwl8k_fw_lock(hw);
4965 if (rc)
4966 return rc;
4967
4968 if (conf->flags & IEEE80211_CONF_IDLE)
4969 rc = mwl8k_cmd_radio_disable(hw);
4970 else
4971 rc = mwl8k_cmd_radio_enable(hw);
4972 if (rc)
4973 goto out;
4974
4975 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4976 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4977 if (rc)
4978 goto out;
4979 }
4980
4981 if (conf->power_level > 18)
4982 conf->power_level = 18;
4983
4984 if (priv->ap_fw) {
4985
4986 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4987 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4988 if (rc)
4989 goto out;
4990 }
4991
4992
4993 } else {
4994 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4995 if (rc)
4996 goto out;
4997 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4998 }
4999
5000 out:
5001 mwl8k_fw_unlock(hw);
5002
5003 return rc;
5004 }
5005
5006 static void
5007 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5008 struct ieee80211_bss_conf *info, u32 changed)
5009 {
5010 struct mwl8k_priv *priv = hw->priv;
5011 u32 ap_legacy_rates = 0;
5012 u8 ap_mcs_rates[16];
5013 int rc;
5014
5015 if (mwl8k_fw_lock(hw))
5016 return;
5017
5018 /*
5019 * No need to capture a beacon if we're no longer associated.
5020 */
5021 if ((changed & BSS_CHANGED_ASSOC) && !vif->cfg.assoc)
5022 priv->capture_beacon = false;
5023
5024 /*
5025 * Get the AP's legacy and MCS rates.
5026 */
5027 if (vif->cfg.assoc) {
5028 struct ieee80211_sta *ap;
5029
5030 rcu_read_lock();
5031
5032 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
5033 if (ap == NULL) {
5034 rcu_read_unlock();
5035 goto out;
5036 }
5037
5038 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) {
5039 ap_legacy_rates = ap->deflink.supp_rates[NL80211_BAND_2GHZ];
5040 } else {
5041 ap_legacy_rates =
5042 ap->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
5043 }
5044 memcpy(ap_mcs_rates, &ap->deflink.ht_cap.mcs, 16);
5045
5046 rcu_read_unlock();
5047
5048 if (changed & BSS_CHANGED_ASSOC) {
5049 if (!priv->ap_fw) {
5050 rc = mwl8k_cmd_set_rate(hw, vif,
5051 ap_legacy_rates,
5052 ap_mcs_rates);
5053 if (rc)
5054 goto out;
5055
5056 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
5057 if (rc)
5058 goto out;
5059 } else {
5060 int idx;
5061 int rate;
5062
5063 /* Use AP firmware specific rate command.
5064 */
5065 idx = ffs(vif->bss_conf.basic_rates);
5066 if (idx)
5067 idx--;
5068
5069 if (hw->conf.chandef.chan->band ==
5070 NL80211_BAND_2GHZ)
5071 rate = mwl8k_rates_24[idx].hw_value;
5072 else
5073 rate = mwl8k_rates_50[idx].hw_value;
5074
5075 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5076 }
5077 }
5078 }
5079
5080 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5081 rc = mwl8k_set_radio_preamble(hw,
5082 vif->bss_conf.use_short_preamble);
5083 if (rc)
5084 goto out;
5085 }
5086
5087 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
5088 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
5089 if (rc)
5090 goto out;
5091 }
5092
5093 if (vif->cfg.assoc && !priv->ap_fw &&
5094 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
5095 BSS_CHANGED_HT))) {
5096 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
5097 if (rc)
5098 goto out;
5099 }
5100
5101 if (vif->cfg.assoc &&
5102 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
5103 /*
5104 * Finalize the join. Tell rx handler to process
5105 * next beacon from our BSSID.
5106 */
5107 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
5108 priv->capture_beacon = true;
5109 }
5110
5111 out:
5112 mwl8k_fw_unlock(hw);
5113 }
5114
5115 static void
5116 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5117 struct ieee80211_bss_conf *info, u32 changed)
5118 {
5119 int rc;
5120
5121 if (mwl8k_fw_lock(hw))
5122 return;
5123
5124 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5125 rc = mwl8k_set_radio_preamble(hw,
5126 vif->bss_conf.use_short_preamble);
5127 if (rc)
5128 goto out;
5129 }
5130
5131 if (changed & BSS_CHANGED_BASIC_RATES) {
5132 int idx;
5133 int rate;
5134
5135 /*
5136 * Use lowest supported basic rate for multicasts
5137 * and management frames (such as probe responses --
5138 * beacons will always go out at 1 Mb/s).
5139 */
5140 idx = ffs(vif->bss_conf.basic_rates);
5141 if (idx)
5142 idx--;
5143
5144 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
5145 rate = mwl8k_rates_24[idx].hw_value;
5146 else
5147 rate = mwl8k_rates_50[idx].hw_value;
5148
5149 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5150 }
5151
5152 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
5153 struct sk_buff *skb;
5154
5155 skb = ieee80211_beacon_get(hw, vif, 0);
5156 if (skb != NULL) {
5157 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5158 kfree_skb(skb);
5159 }
5160 }
5161
5162 if (changed & BSS_CHANGED_BEACON_ENABLED)
5163 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5164
5165 out:
5166 mwl8k_fw_unlock(hw);
5167 }
5168
5169 static void
5170 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5171 struct ieee80211_bss_conf *info, u64 changed)
5172 {
5173 if (vif->type == NL80211_IFTYPE_STATION)
5174 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5175 if (vif->type == NL80211_IFTYPE_AP)
5176 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5177 }
5178
5179 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5180 struct netdev_hw_addr_list *mc_list)
5181 {
5182 struct mwl8k_cmd_pkt_hdr *cmd;
5183
5184 /*
5185 * Synthesize and return a command packet that programs the
5186 * hardware multicast address filter. At this point we don't
5187 * know whether FIF_ALLMULTI is being requested, but if it is,
5188 * we'll end up throwing this packet away and creating a new
5189 * one in mwl8k_configure_filter().
5190 */
5191 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5192
5193 return (unsigned long)cmd;
5194 }
5195
5196 static int
5197 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5198 unsigned int changed_flags,
5199 unsigned int *total_flags)
5200 {
5201 struct mwl8k_priv *priv = hw->priv;
5202
5203 /*
5204 * Hardware sniffer mode is mutually exclusive with STA
5205 * operation, so refuse to enable sniffer mode if a STA
5206 * interface is active.
5207 */
5208 if (!list_empty(&priv->vif_list)) {
5209 if (net_ratelimit())
5210 wiphy_info(hw->wiphy,
5211 "not enabling sniffer mode because STA interface is active\n");
5212 return 0;
5213 }
5214
5215 if (!priv->sniffer_enabled) {
5216 if (mwl8k_cmd_enable_sniffer(hw, 1))
5217 return 0;
5218 priv->sniffer_enabled = true;
5219 }
5220
5221 *total_flags &= FIF_ALLMULTI |
5222 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5223 FIF_OTHER_BSS;
5224
5225 return 1;
5226 }
5227
5228 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5229 {
5230 if (!list_empty(&priv->vif_list))
5231 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5232
5233 return NULL;
5234 }
5235
5236 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5237 unsigned int changed_flags,
5238 unsigned int *total_flags,
5239 u64 multicast)
5240 {
5241 struct mwl8k_priv *priv = hw->priv;
5242 struct mwl8k_cmd_pkt_hdr *cmd = (void *)(unsigned long)multicast;
5243
5244 /*
5245 * AP firmware doesn't allow fine-grained control over
5246 * the receive filter.
5247 */
5248 if (priv->ap_fw) {
5249 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5250 kfree(cmd);
5251 return;
5252 }
5253
5254 /*
5255 * Enable hardware sniffer mode if FIF_CONTROL or
5256 * FIF_OTHER_BSS is requested.
5257 */
5258 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5259 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5260 kfree(cmd);
5261 return;
5262 }
5263
5264 /* Clear unsupported feature flags */
5265 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5266
5267 if (mwl8k_fw_lock(hw)) {
5268 kfree(cmd);
5269 return;
5270 }
5271
5272 if (priv->sniffer_enabled) {
5273 mwl8k_cmd_enable_sniffer(hw, 0);
5274 priv->sniffer_enabled = false;
5275 }
5276
5277 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5278 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5279 /*
5280 * Disable the BSS filter.
5281 */
5282 mwl8k_cmd_set_pre_scan(hw);
5283 } else {
5284 struct mwl8k_vif *mwl8k_vif;
5285 const u8 *bssid;
5286
5287 /*
5288 * Enable the BSS filter.
5289 *
5290 * If there is an active STA interface, use that
5291 * interface's BSSID, otherwise use a dummy one
5292 * (where the OUI part needs to be nonzero for
5293 * the BSSID to be accepted by POST_SCAN).
5294 */
5295 mwl8k_vif = mwl8k_first_vif(priv);
5296 if (mwl8k_vif != NULL)
5297 bssid = mwl8k_vif->vif->bss_conf.bssid;
5298 else
5299 bssid = "\x01\x00\x00\x00\x00\x00";
5300
5301 mwl8k_cmd_set_post_scan(hw, bssid);
5302 }
5303 }
5304
5305 /*
5306 * If FIF_ALLMULTI is being requested, throw away the command
5307 * packet that ->prepare_multicast() built and replace it with
5308 * a command packet that enables reception of all multicast
5309 * packets.
5310 */
5311 if (*total_flags & FIF_ALLMULTI) {
5312 kfree(cmd);
5313 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5314 }
5315
5316 if (cmd != NULL) {
5317 mwl8k_post_cmd(hw, cmd);
5318 kfree(cmd);
5319 }
5320
5321 mwl8k_fw_unlock(hw);
5322 }
5323
5324 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5325 {
5326 return mwl8k_cmd_set_rts_threshold(hw, value);
5327 }
5328
5329 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5330 struct ieee80211_vif *vif,
5331 struct ieee80211_sta *sta)
5332 {
5333 struct mwl8k_priv *priv = hw->priv;
5334
5335 if (priv->ap_fw)
5336 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5337 else
5338 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5339 }
5340
5341 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5342 struct ieee80211_vif *vif,
5343 struct ieee80211_sta *sta)
5344 {
5345 struct mwl8k_priv *priv = hw->priv;
5346 int ret;
5347 int i;
5348 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5349 struct ieee80211_key_conf *key;
5350
5351 if (!priv->ap_fw) {
5352 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5353 if (ret >= 0) {
5354 MWL8K_STA(sta)->peer_id = ret;
5355 if (sta->deflink.ht_cap.ht_supported)
5356 MWL8K_STA(sta)->is_ampdu_allowed = true;
5357 ret = 0;
5358 }
5359
5360 } else {
5361 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5362 }
5363
5364 for (i = 0; i < NUM_WEP_KEYS; i++) {
5365 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5366 if (mwl8k_vif->wep_key_conf[i].enabled)
5367 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5368 }
5369 return ret;
5370 }
5371
5372 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5373 struct ieee80211_vif *vif,
5374 unsigned int link_id, u16 queue,
5375 const struct ieee80211_tx_queue_params *params)
5376 {
5377 struct mwl8k_priv *priv = hw->priv;
5378 int rc;
5379
5380 rc = mwl8k_fw_lock(hw);
5381 if (!rc) {
5382 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5383 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5384
5385 if (!priv->wmm_enabled)
5386 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5387
5388 if (!rc) {
5389 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5390 rc = mwl8k_cmd_set_edca_params(hw, q,
5391 params->cw_min,
5392 params->cw_max,
5393 params->aifs,
5394 params->txop);
5395 }
5396
5397 mwl8k_fw_unlock(hw);
5398 }
5399
5400 return rc;
5401 }
5402
5403 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5404 struct ieee80211_low_level_stats *stats)
5405 {
5406 return mwl8k_cmd_get_stat(hw, stats);
5407 }
5408
5409 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5410 struct survey_info *survey)
5411 {
5412 struct mwl8k_priv *priv = hw->priv;
5413 struct ieee80211_conf *conf = &hw->conf;
5414 struct ieee80211_supported_band *sband;
5415
5416 if (priv->ap_fw) {
5417 sband = hw->wiphy->bands[NL80211_BAND_2GHZ];
5418
5419 if (sband && idx >= sband->n_channels) {
5420 idx -= sband->n_channels;
5421 sband = NULL;
5422 }
5423
5424 if (!sband)
5425 sband = hw->wiphy->bands[NL80211_BAND_5GHZ];
5426
5427 if (!sband || idx >= sband->n_channels)
5428 return -ENOENT;
5429
5430 memcpy(survey, &priv->survey[idx], sizeof(*survey));
5431 survey->channel = &sband->channels[idx];
5432
5433 return 0;
5434 }
5435
5436 if (idx != 0)
5437 return -ENOENT;
5438
5439 survey->channel = conf->chandef.chan;
5440 survey->filled = SURVEY_INFO_NOISE_DBM;
5441 survey->noise = priv->noise;
5442
5443 return 0;
5444 }
5445
5446 #define MAX_AMPDU_ATTEMPTS 5
5447
5448 static int
5449 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5450 struct ieee80211_ampdu_params *params)
5451 {
5452 struct ieee80211_sta *sta = params->sta;
5453 enum ieee80211_ampdu_mlme_action action = params->action;
5454 u16 tid = params->tid;
5455 u16 *ssn = &params->ssn;
5456 u8 buf_size = params->buf_size;
5457 int i, rc = 0;
5458 struct mwl8k_priv *priv = hw->priv;
5459 struct mwl8k_ampdu_stream *stream;
5460 u8 *addr = sta->addr, idx;
5461 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5462
5463 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
5464 return -ENOTSUPP;
5465
5466 spin_lock(&priv->stream_lock);
5467 stream = mwl8k_lookup_stream(hw, addr, tid);
5468
5469 switch (action) {
5470 case IEEE80211_AMPDU_RX_START:
5471 case IEEE80211_AMPDU_RX_STOP:
5472 break;
5473 case IEEE80211_AMPDU_TX_START:
5474 /* By the time we get here the hw queues may contain outgoing
5475 * packets for this RA/TID that are not part of this BA
5476 * session. The hw will assign sequence numbers to these
5477 * packets as they go out. So if we query the hw for its next
5478 * sequence number and use that for the SSN here, it may end up
5479 * being wrong, which will lead to sequence number mismatch at
5480 * the recipient. To avoid this, we reset the sequence number
5481 * to O for the first MPDU in this BA stream.
5482 */
5483 *ssn = 0;
5484 if (stream == NULL) {
5485 /* This means that somebody outside this driver called
5486 * ieee80211_start_tx_ba_session. This is unexpected
5487 * because we do our own rate control. Just warn and
5488 * move on.
5489 */
5490 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5491 "Proceeding anyway.\n", __func__);
5492 stream = mwl8k_add_stream(hw, sta, tid);
5493 }
5494 if (stream == NULL) {
5495 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5496 rc = -EBUSY;
5497 break;
5498 }
5499 stream->state = AMPDU_STREAM_IN_PROGRESS;
5500
5501 /* Release the lock before we do the time consuming stuff */
5502 spin_unlock(&priv->stream_lock);
5503 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5504
5505 /* Check if link is still valid */
5506 if (!sta_info->is_ampdu_allowed) {
5507 spin_lock(&priv->stream_lock);
5508 mwl8k_remove_stream(hw, stream);
5509 spin_unlock(&priv->stream_lock);
5510 return -EBUSY;
5511 }
5512
5513 rc = mwl8k_check_ba(hw, stream, vif);
5514
5515 /* If HW restart is in progress mwl8k_post_cmd will
5516 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5517 * such cases
5518 */
5519 if (!rc || rc == -EBUSY)
5520 break;
5521 /*
5522 * HW queues take time to be flushed, give them
5523 * sufficient time
5524 */
5525
5526 msleep(1000);
5527 }
5528 spin_lock(&priv->stream_lock);
5529 if (rc) {
5530 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5531 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5532 mwl8k_remove_stream(hw, stream);
5533 rc = -EBUSY;
5534 break;
5535 }
5536 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE;
5537 break;
5538 case IEEE80211_AMPDU_TX_STOP_CONT:
5539 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5540 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5541 if (stream) {
5542 if (stream->state == AMPDU_STREAM_ACTIVE) {
5543 idx = stream->idx;
5544 spin_unlock(&priv->stream_lock);
5545 mwl8k_destroy_ba(hw, idx);
5546 spin_lock(&priv->stream_lock);
5547 }
5548 mwl8k_remove_stream(hw, stream);
5549 }
5550 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5551 break;
5552 case IEEE80211_AMPDU_TX_OPERATIONAL:
5553 BUG_ON(stream == NULL);
5554 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5555 spin_unlock(&priv->stream_lock);
5556 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5557 spin_lock(&priv->stream_lock);
5558 if (!rc)
5559 stream->state = AMPDU_STREAM_ACTIVE;
5560 else {
5561 idx = stream->idx;
5562 spin_unlock(&priv->stream_lock);
5563 mwl8k_destroy_ba(hw, idx);
5564 spin_lock(&priv->stream_lock);
5565 wiphy_debug(hw->wiphy,
5566 "Failed adding stream for sta %pM tid %d\n",
5567 addr, tid);
5568 mwl8k_remove_stream(hw, stream);
5569 }
5570 break;
5571
5572 default:
5573 rc = -ENOTSUPP;
5574 }
5575
5576 spin_unlock(&priv->stream_lock);
5577 return rc;
5578 }
5579
5580 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
5581 struct ieee80211_vif *vif,
5582 const u8 *mac_addr)
5583 {
5584 struct mwl8k_priv *priv = hw->priv;
5585 u8 tmp;
5586
5587 if (!priv->ap_fw)
5588 return;
5589
5590 /* clear all stats */
5591 priv->channel_time = 0;
5592 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5593 ioread32(priv->regs + NOK_CCA_CNT_REG);
5594 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5595
5596 priv->sw_scan_start = true;
5597 }
5598
5599 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
5600 struct ieee80211_vif *vif)
5601 {
5602 struct mwl8k_priv *priv = hw->priv;
5603 u8 tmp;
5604
5605 if (!priv->ap_fw)
5606 return;
5607
5608 priv->sw_scan_start = false;
5609
5610 /* clear all stats */
5611 priv->channel_time = 0;
5612 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5613 ioread32(priv->regs + NOK_CCA_CNT_REG);
5614 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5615 }
5616
5617 static const struct ieee80211_ops mwl8k_ops = {
5618 .add_chanctx = ieee80211_emulate_add_chanctx,
5619 .remove_chanctx = ieee80211_emulate_remove_chanctx,
5620 .change_chanctx = ieee80211_emulate_change_chanctx,
5621 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
5622 .tx = mwl8k_tx,
5623 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
5624 .start = mwl8k_start,
5625 .stop = mwl8k_stop,
5626 .add_interface = mwl8k_add_interface,
5627 .remove_interface = mwl8k_remove_interface,
5628 .config = mwl8k_config,
5629 .bss_info_changed = mwl8k_bss_info_changed,
5630 .prepare_multicast = mwl8k_prepare_multicast,
5631 .configure_filter = mwl8k_configure_filter,
5632 .set_key = mwl8k_set_key,
5633 .set_rts_threshold = mwl8k_set_rts_threshold,
5634 .sta_add = mwl8k_sta_add,
5635 .sta_remove = mwl8k_sta_remove,
5636 .conf_tx = mwl8k_conf_tx,
5637 .get_stats = mwl8k_get_stats,
5638 .get_survey = mwl8k_get_survey,
5639 .ampdu_action = mwl8k_ampdu_action,
5640 .sw_scan_start = mwl8k_sw_scan_start,
5641 .sw_scan_complete = mwl8k_sw_scan_complete,
5642 };
5643
5644 static void mwl8k_finalize_join_worker(struct work_struct *work)
5645 {
5646 struct mwl8k_priv *priv =
5647 container_of(work, struct mwl8k_priv, finalize_join_worker);
5648 struct sk_buff *skb = priv->beacon_skb;
5649 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5650 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5651 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5652 mgmt->u.beacon.variable, len);
5653 int dtim_period = 1;
5654
5655 if (tim && tim[1] >= 2)
5656 dtim_period = tim[3];
5657
5658 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5659
5660 dev_kfree_skb(skb);
5661 priv->beacon_skb = NULL;
5662 }
5663
5664 enum {
5665 MWL8363 = 0,
5666 MWL8687,
5667 MWL8366,
5668 MWL8764,
5669 };
5670
5671 #define MWL8K_8366_AP_FW_API 3
5672 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5673 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5674
5675 #define MWL8K_8764_AP_FW_API 1
5676 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5677 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5678
5679 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5680 [MWL8363] = {
5681 .part_name = "88w8363",
5682 .helper_image = "mwl8k/helper_8363.fw",
5683 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5684 },
5685 [MWL8687] = {
5686 .part_name = "88w8687",
5687 .helper_image = "mwl8k/helper_8687.fw",
5688 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5689 },
5690 [MWL8366] = {
5691 .part_name = "88w8366",
5692 .helper_image = "mwl8k/helper_8366.fw",
5693 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5694 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5695 .fw_api_ap = MWL8K_8366_AP_FW_API,
5696 .ap_rxd_ops = &rxd_ap_ops,
5697 },
5698 [MWL8764] = {
5699 .part_name = "88w8764",
5700 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5701 .fw_api_ap = MWL8K_8764_AP_FW_API,
5702 .ap_rxd_ops = &rxd_ap_ops,
5703 },
5704 };
5705
5706 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5707 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5708 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5709 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5710 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5711 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5712 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5713
5714 static const struct pci_device_id mwl8k_pci_id_table[] = {
5715 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5716 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5717 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5718 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5719 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5720 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5721 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5722 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5723 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5724 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5725 { },
5726 };
5727 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5728
5729 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5730 {
5731 int rc;
5732 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5733 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5734 priv->fw_pref, priv->fw_alt);
5735 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5736 if (rc) {
5737 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5738 pci_name(priv->pdev), priv->fw_alt);
5739 return rc;
5740 }
5741 return 0;
5742 }
5743
5744 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5745 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5746 {
5747 struct mwl8k_priv *priv = context;
5748 struct mwl8k_device_info *di = priv->device_info;
5749 int rc;
5750
5751 switch (priv->fw_state) {
5752 case FW_STATE_INIT:
5753 if (!fw) {
5754 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5755 pci_name(priv->pdev), di->helper_image);
5756 goto fail;
5757 }
5758 priv->fw_helper = fw;
5759 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5760 true);
5761 if (rc && priv->fw_alt) {
5762 rc = mwl8k_request_alt_fw(priv);
5763 if (rc)
5764 goto fail;
5765 priv->fw_state = FW_STATE_LOADING_ALT;
5766 } else if (rc)
5767 goto fail;
5768 else
5769 priv->fw_state = FW_STATE_LOADING_PREF;
5770 break;
5771
5772 case FW_STATE_LOADING_PREF:
5773 if (!fw) {
5774 if (priv->fw_alt) {
5775 rc = mwl8k_request_alt_fw(priv);
5776 if (rc)
5777 goto fail;
5778 priv->fw_state = FW_STATE_LOADING_ALT;
5779 } else
5780 goto fail;
5781 } else {
5782 priv->fw_ucode = fw;
5783 rc = mwl8k_firmware_load_success(priv);
5784 if (rc)
5785 goto fail;
5786 else
5787 complete(&priv->firmware_loading_complete);
5788 }
5789 break;
5790
5791 case FW_STATE_LOADING_ALT:
5792 if (!fw) {
5793 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5794 pci_name(priv->pdev), di->helper_image);
5795 goto fail;
5796 }
5797 priv->fw_ucode = fw;
5798 rc = mwl8k_firmware_load_success(priv);
5799 if (rc)
5800 goto fail;
5801 else
5802 complete(&priv->firmware_loading_complete);
5803 break;
5804
5805 default:
5806 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5807 MWL8K_NAME, priv->fw_state);
5808 BUG_ON(1);
5809 }
5810
5811 return;
5812
5813 fail:
5814 priv->fw_state = FW_STATE_ERROR;
5815 complete(&priv->firmware_loading_complete);
5816 mwl8k_release_firmware(priv);
5817 device_release_driver(&priv->pdev->dev);
5818 }
5819
5820 #define MAX_RESTART_ATTEMPTS 1
5821 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5822 bool nowait)
5823 {
5824 struct mwl8k_priv *priv = hw->priv;
5825 int rc;
5826 int count = MAX_RESTART_ATTEMPTS;
5827
5828 retry:
5829 /* Reset firmware and hardware */
5830 mwl8k_hw_reset(priv);
5831
5832 /* Ask userland hotplug daemon for the device firmware */
5833 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5834 if (rc) {
5835 wiphy_err(hw->wiphy, "Firmware files not found\n");
5836 return rc;
5837 }
5838
5839 if (nowait)
5840 return rc;
5841
5842 /* Load firmware into hardware */
5843 rc = mwl8k_load_firmware(hw);
5844 if (rc)
5845 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5846
5847 /* Reclaim memory once firmware is successfully loaded */
5848 mwl8k_release_firmware(priv);
5849
5850 if (rc && count) {
5851 /* FW did not start successfully;
5852 * lets try one more time
5853 */
5854 count--;
5855 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5856 msleep(20);
5857 goto retry;
5858 }
5859
5860 return rc;
5861 }
5862
5863 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5864 {
5865 struct mwl8k_priv *priv = hw->priv;
5866 int rc = 0;
5867 int i;
5868
5869 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5870 rc = mwl8k_txq_init(hw, i);
5871 if (rc)
5872 break;
5873 if (priv->ap_fw)
5874 iowrite32(priv->txq[i].txd_dma,
5875 priv->sram + priv->txq_offset[i]);
5876 }
5877 return rc;
5878 }
5879
5880 /* initialize hw after successfully loading a firmware image */
5881 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5882 {
5883 struct mwl8k_priv *priv = hw->priv;
5884 int rc = 0;
5885 int i;
5886
5887 if (priv->ap_fw) {
5888 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5889 if (priv->rxd_ops == NULL) {
5890 wiphy_err(hw->wiphy,
5891 "Driver does not have AP firmware image support for this hardware\n");
5892 rc = -ENOENT;
5893 goto err_stop_firmware;
5894 }
5895 } else {
5896 priv->rxd_ops = &rxd_sta_ops;
5897 }
5898
5899 priv->sniffer_enabled = false;
5900 priv->wmm_enabled = false;
5901 priv->pending_tx_pkts = 0;
5902 atomic_set(&priv->watchdog_event_pending, 0);
5903
5904 rc = mwl8k_rxq_init(hw, 0);
5905 if (rc)
5906 goto err_stop_firmware;
5907 rxq_refill(hw, 0, INT_MAX);
5908
5909 /* For the sta firmware, we need to know the dma addresses of tx queues
5910 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5911 * prior to issuing this command. But for the AP case, we learn the
5912 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5913 * case we must initialize the tx queues after.
5914 */
5915 priv->num_ampdu_queues = 0;
5916 if (!priv->ap_fw) {
5917 rc = mwl8k_init_txqs(hw);
5918 if (rc)
5919 goto err_free_queues;
5920 }
5921
5922 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5923 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5924 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5925 MWL8K_A2H_INT_BA_WATCHDOG,
5926 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5927 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5928 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5929
5930 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5931 IRQF_SHARED, MWL8K_NAME, hw);
5932 if (rc) {
5933 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5934 goto err_free_queues;
5935 }
5936
5937 /*
5938 * When hw restart is requested,
5939 * mac80211 will take care of clearing
5940 * the ampdu streams, so do not clear
5941 * the ampdu state here
5942 */
5943 if (!priv->hw_restart_in_progress)
5944 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5945
5946 /*
5947 * Temporarily enable interrupts. Initial firmware host
5948 * commands use interrupts and avoid polling. Disable
5949 * interrupts when done.
5950 */
5951 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5952
5953 /* Get config data, mac addrs etc */
5954 if (priv->ap_fw) {
5955 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5956 if (!rc)
5957 rc = mwl8k_init_txqs(hw);
5958 if (!rc)
5959 rc = mwl8k_cmd_set_hw_spec(hw);
5960 } else {
5961 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5962 }
5963 if (rc) {
5964 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5965 goto err_free_irq;
5966 }
5967
5968 /* Turn radio off */
5969 rc = mwl8k_cmd_radio_disable(hw);
5970 if (rc) {
5971 wiphy_err(hw->wiphy, "Cannot disable\n");
5972 goto err_free_irq;
5973 }
5974
5975 /* Clear MAC address */
5976 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5977 if (rc) {
5978 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5979 goto err_free_irq;
5980 }
5981
5982 /* Configure Antennas */
5983 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5984 if (rc)
5985 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5986 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5987 if (rc)
5988 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5989
5990
5991 /* Disable interrupts */
5992 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5993 free_irq(priv->pdev->irq, hw);
5994
5995 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5996 priv->device_info->part_name,
5997 priv->hw_rev, hw->wiphy->perm_addr,
5998 priv->ap_fw ? "AP" : "STA",
5999 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
6000 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
6001
6002 return 0;
6003
6004 err_free_irq:
6005 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
6006 free_irq(priv->pdev->irq, hw);
6007
6008 err_free_queues:
6009 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6010 mwl8k_txq_deinit(hw, i);
6011 mwl8k_rxq_deinit(hw, 0);
6012
6013 err_stop_firmware:
6014 mwl8k_hw_reset(priv);
6015
6016 return rc;
6017 }
6018
6019 /*
6020 * invoke mwl8k_reload_firmware to change the firmware image after the device
6021 * has already been registered
6022 */
6023 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
6024 {
6025 int i, rc = 0;
6026 struct mwl8k_priv *priv = hw->priv;
6027 struct mwl8k_vif *vif, *tmp_vif;
6028
6029 mwl8k_stop(hw, false);
6030 mwl8k_rxq_deinit(hw, 0);
6031
6032 /*
6033 * All the existing interfaces are re-added by the ieee80211_reconfig;
6034 * which means driver should remove existing interfaces before calling
6035 * ieee80211_restart_hw
6036 */
6037 if (priv->hw_restart_in_progress)
6038 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6039 mwl8k_remove_vif(priv, vif);
6040
6041 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6042 mwl8k_txq_deinit(hw, i);
6043
6044 rc = mwl8k_init_firmware(hw, fw_image, false);
6045 if (rc)
6046 goto fail;
6047
6048 rc = mwl8k_probe_hw(hw);
6049 if (rc)
6050 goto fail;
6051
6052 if (priv->hw_restart_in_progress)
6053 return rc;
6054
6055 rc = mwl8k_start(hw);
6056 if (rc)
6057 goto fail;
6058
6059 rc = mwl8k_config(hw, ~0);
6060 if (rc)
6061 goto fail;
6062
6063 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6064 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]);
6065 if (rc)
6066 goto fail;
6067 }
6068
6069 return rc;
6070
6071 fail:
6072 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6073 return rc;
6074 }
6075
6076 static const struct ieee80211_iface_limit ap_if_limits[] = {
6077 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
6078 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
6079 };
6080
6081 static const struct ieee80211_iface_combination ap_if_comb = {
6082 .limits = ap_if_limits,
6083 .n_limits = ARRAY_SIZE(ap_if_limits),
6084 .max_interfaces = 8,
6085 .num_different_channels = 1,
6086 };
6087
6088
6089 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6090 {
6091 struct ieee80211_hw *hw = priv->hw;
6092 int i, rc;
6093
6094 rc = mwl8k_load_firmware(hw);
6095 mwl8k_release_firmware(priv);
6096 if (rc) {
6097 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6098 return rc;
6099 }
6100
6101 /*
6102 * Extra headroom is the size of the required DMA header
6103 * minus the size of the smallest 802.11 frame (CTS frame).
6104 */
6105 hw->extra_tx_headroom =
6106 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6107
6108 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6109
6110 hw->queues = MWL8K_TX_WMM_QUEUES;
6111
6112 /* Set rssi values to dBm */
6113 ieee80211_hw_set(hw, SIGNAL_DBM);
6114 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
6115
6116 /*
6117 * Ask mac80211 to not to trigger PS mode
6118 * based on PM bit of incoming frames.
6119 */
6120 if (priv->ap_fw)
6121 ieee80211_hw_set(hw, AP_LINK_PS);
6122
6123 hw->vif_data_size = sizeof(struct mwl8k_vif);
6124 hw->sta_data_size = sizeof(struct mwl8k_sta);
6125
6126 priv->macids_used = 0;
6127 INIT_LIST_HEAD(&priv->vif_list);
6128
6129 /* Set default radio state and preamble */
6130 priv->radio_on = false;
6131 priv->radio_short_preamble = false;
6132
6133 /* Finalize join worker */
6134 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6135 /* Handle watchdog ba events */
6136 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6137 /* To reload the firmware if it crashes */
6138 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6139
6140 /* TX reclaim and RX tasklets. */
6141 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll);
6142 tasklet_disable(&priv->poll_tx_task);
6143 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll);
6144 tasklet_disable(&priv->poll_rx_task);
6145
6146 /* Power management cookie */
6147 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4,
6148 &priv->cookie_dma, GFP_KERNEL);
6149 if (priv->cookie == NULL)
6150 return -ENOMEM;
6151
6152 mutex_init(&priv->fw_mutex);
6153 priv->fw_mutex_owner = NULL;
6154 priv->fw_mutex_depth = 0;
6155 priv->hostcmd_wait = NULL;
6156
6157 spin_lock_init(&priv->tx_lock);
6158
6159 spin_lock_init(&priv->stream_lock);
6160
6161 priv->tx_wait = NULL;
6162
6163 rc = mwl8k_probe_hw(hw);
6164 if (rc)
6165 goto err_free_cookie;
6166
6167 hw->wiphy->interface_modes = 0;
6168
6169 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6170 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6171 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6172 hw->wiphy->iface_combinations = &ap_if_comb;
6173 hw->wiphy->n_iface_combinations = 1;
6174 }
6175
6176 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6177 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6178
6179 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
6180
6181 rc = ieee80211_register_hw(hw);
6182 if (rc) {
6183 wiphy_err(hw->wiphy, "Cannot register device\n");
6184 goto err_unprobe_hw;
6185 }
6186
6187 return 0;
6188
6189 err_unprobe_hw:
6190 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6191 mwl8k_txq_deinit(hw, i);
6192 mwl8k_rxq_deinit(hw, 0);
6193
6194 err_free_cookie:
6195 if (priv->cookie != NULL)
6196 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie,
6197 priv->cookie_dma);
6198
6199 return rc;
6200 }
6201 static int mwl8k_probe(struct pci_dev *pdev,
6202 const struct pci_device_id *id)
6203 {
6204 static int printed_version;
6205 struct ieee80211_hw *hw;
6206 struct mwl8k_priv *priv;
6207 struct mwl8k_device_info *di;
6208 int rc;
6209
6210 if (!printed_version) {
6211 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6212 printed_version = 1;
6213 }
6214
6215
6216 rc = pci_enable_device(pdev);
6217 if (rc) {
6218 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6219 MWL8K_NAME);
6220 return rc;
6221 }
6222
6223 rc = pci_request_regions(pdev, MWL8K_NAME);
6224 if (rc) {
6225 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6226 MWL8K_NAME);
6227 goto err_disable_device;
6228 }
6229
6230 pci_set_master(pdev);
6231
6232
6233 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6234 if (hw == NULL) {
6235 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6236 rc = -ENOMEM;
6237 goto err_free_reg;
6238 }
6239
6240 SET_IEEE80211_DEV(hw, &pdev->dev);
6241 pci_set_drvdata(pdev, hw);
6242
6243 priv = hw->priv;
6244 priv->hw = hw;
6245 priv->pdev = pdev;
6246 priv->device_info = &mwl8k_info_tbl[id->driver_data];
6247
6248 if (id->driver_data == MWL8764)
6249 priv->is_8764 = true;
6250
6251 priv->sram = pci_iomap(pdev, 0, 0x10000);
6252 if (priv->sram == NULL) {
6253 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6254 rc = -EIO;
6255 goto err_iounmap;
6256 }
6257
6258 /*
6259 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6260 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6261 */
6262 priv->regs = pci_iomap(pdev, 1, 0x10000);
6263 if (priv->regs == NULL) {
6264 priv->regs = pci_iomap(pdev, 2, 0x10000);
6265 if (priv->regs == NULL) {
6266 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6267 rc = -EIO;
6268 goto err_iounmap;
6269 }
6270 }
6271
6272 /*
6273 * Choose the initial fw image depending on user input. If a second
6274 * image is available, make it the alternative image that will be
6275 * loaded if the first one fails.
6276 */
6277 init_completion(&priv->firmware_loading_complete);
6278 di = priv->device_info;
6279 if (ap_mode_default && di->fw_image_ap) {
6280 priv->fw_pref = di->fw_image_ap;
6281 priv->fw_alt = di->fw_image_sta;
6282 } else if (!ap_mode_default && di->fw_image_sta) {
6283 priv->fw_pref = di->fw_image_sta;
6284 priv->fw_alt = di->fw_image_ap;
6285 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6286 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6287 priv->fw_pref = di->fw_image_sta;
6288 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6289 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6290 priv->fw_pref = di->fw_image_ap;
6291 }
6292 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6293 if (rc)
6294 goto err_stop_firmware;
6295
6296 priv->hw_restart_in_progress = false;
6297
6298 priv->running_bsses = 0;
6299
6300 return rc;
6301
6302 err_stop_firmware:
6303 mwl8k_hw_reset(priv);
6304
6305 err_iounmap:
6306 if (priv->regs != NULL)
6307 pci_iounmap(pdev, priv->regs);
6308
6309 if (priv->sram != NULL)
6310 pci_iounmap(pdev, priv->sram);
6311
6312 ieee80211_free_hw(hw);
6313
6314 err_free_reg:
6315 pci_release_regions(pdev);
6316
6317 err_disable_device:
6318 pci_disable_device(pdev);
6319
6320 return rc;
6321 }
6322
6323 static void mwl8k_remove(struct pci_dev *pdev)
6324 {
6325 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6326 struct mwl8k_priv *priv;
6327 int i;
6328
6329 if (hw == NULL)
6330 return;
6331 priv = hw->priv;
6332
6333 wait_for_completion(&priv->firmware_loading_complete);
6334
6335 if (priv->fw_state == FW_STATE_ERROR) {
6336 mwl8k_hw_reset(priv);
6337 goto unmap;
6338 }
6339
6340 ieee80211_stop_queues(hw);
6341
6342 ieee80211_unregister_hw(hw);
6343
6344 /* Remove TX reclaim and RX tasklets. */
6345 tasklet_kill(&priv->poll_tx_task);
6346 tasklet_kill(&priv->poll_rx_task);
6347
6348 /* Stop hardware */
6349 mwl8k_hw_reset(priv);
6350
6351 /* Return all skbs to mac80211 */
6352 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6353 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6354
6355 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6356 mwl8k_txq_deinit(hw, i);
6357
6358 mwl8k_rxq_deinit(hw, 0);
6359
6360 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma);
6361
6362 unmap:
6363 pci_iounmap(pdev, priv->regs);
6364 pci_iounmap(pdev, priv->sram);
6365 ieee80211_free_hw(hw);
6366 pci_release_regions(pdev);
6367 pci_disable_device(pdev);
6368 }
6369
6370 static struct pci_driver mwl8k_driver = {
6371 .name = MWL8K_NAME,
6372 .id_table = mwl8k_pci_id_table,
6373 .probe = mwl8k_probe,
6374 .remove = mwl8k_remove,
6375 };
6376
6377 module_pci_driver(mwl8k_driver);
6378
6379 MODULE_DESCRIPTION(MWL8K_DESC);
6380 MODULE_VERSION(MWL8K_VERSION);
6381 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6382 MODULE_LICENSE("GPL");
Kernel DRM miscellaneous fixes and cross-tree changes