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/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/spinlock.h>
18 #include <linux/list.h>
19 #include <linux/pci.h>
20 #include <linux/delay.h>
21 #include <linux/completion.h>
22 #include <linux/etherdevice.h>
23 #include <linux/slab.h>
24 #include <net/mac80211.h>
25 #include <linux/moduleparam.h>
26 #include <linux/firmware.h>
27 #include <linux/workqueue.h>
28
29 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
30 #define MWL8K_NAME KBUILD_MODNAME
31 #define MWL8K_VERSION "0.13"
32
33 /* Module parameters */
34 static bool ap_mode_default;
35 module_param(ap_mode_default, bool, 0);
36 MODULE_PARM_DESC(ap_mode_default,
37 "Set to 1 to make ap mode the default instead of sta mode");
38
39 /* Register definitions */
40 #define MWL8K_HIU_GEN_PTR 0x00000c10
41 #define MWL8K_MODE_STA 0x0000005a
42 #define MWL8K_MODE_AP 0x000000a5
43 #define MWL8K_HIU_INT_CODE 0x00000c14
44 #define MWL8K_FWSTA_READY 0xf0f1f2f4
45 #define MWL8K_FWAP_READY 0xf1f2f4a5
46 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
47 #define MWL8K_HIU_SCRATCH 0x00000c40
48
49 /* Host->device communications */
50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
52 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
55 #define MWL8K_H2A_INT_DUMMY (1 << 20)
56 #define MWL8K_H2A_INT_RESET (1 << 15)
57 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
58 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
59
60 /* Device->host communications */
61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
63 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
66 #define MWL8K_A2H_INT_DUMMY (1 << 20)
67 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
68 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
69 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
70 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
71 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
72 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
73 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
74 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
75 #define MWL8K_A2H_INT_RX_READY (1 << 1)
76 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
77
78 /* HW micro second timer register
79 * located at offset 0xA600. This
80 * will be used to timestamp tx
81 * packets.
82 */
83
84 #define MWL8K_HW_TIMER_REGISTER 0x0000a600
85
86 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
87 MWL8K_A2H_INT_CHNL_SWITCHED | \
88 MWL8K_A2H_INT_QUEUE_EMPTY | \
89 MWL8K_A2H_INT_RADAR_DETECT | \
90 MWL8K_A2H_INT_RADIO_ON | \
91 MWL8K_A2H_INT_RADIO_OFF | \
92 MWL8K_A2H_INT_MAC_EVENT | \
93 MWL8K_A2H_INT_OPC_DONE | \
94 MWL8K_A2H_INT_RX_READY | \
95 MWL8K_A2H_INT_TX_DONE | \
96 MWL8K_A2H_INT_BA_WATCHDOG)
97
98 #define MWL8K_RX_QUEUES 1
99 #define MWL8K_TX_WMM_QUEUES 4
100 #define MWL8K_MAX_AMPDU_QUEUES 8
101 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
102 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
103
104 struct rxd_ops {
105 int rxd_size;
106 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
107 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
108 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
109 __le16 *qos, s8 *noise);
110 };
111
112 struct mwl8k_device_info {
113 char *part_name;
114 char *helper_image;
115 char *fw_image_sta;
116 char *fw_image_ap;
117 struct rxd_ops *ap_rxd_ops;
118 u32 fw_api_ap;
119 };
120
121 struct mwl8k_rx_queue {
122 int rxd_count;
123
124 /* hw receives here */
125 int head;
126
127 /* refill descs here */
128 int tail;
129
130 void *rxd;
131 dma_addr_t rxd_dma;
132 struct {
133 struct sk_buff *skb;
134 DEFINE_DMA_UNMAP_ADDR(dma);
135 } *buf;
136 };
137
138 struct mwl8k_tx_queue {
139 /* hw transmits here */
140 int head;
141
142 /* sw appends here */
143 int tail;
144
145 unsigned int len;
146 struct mwl8k_tx_desc *txd;
147 dma_addr_t txd_dma;
148 struct sk_buff **skb;
149 };
150
151 enum {
152 AMPDU_NO_STREAM,
153 AMPDU_STREAM_NEW,
154 AMPDU_STREAM_IN_PROGRESS,
155 AMPDU_STREAM_ACTIVE,
156 };
157
158 struct mwl8k_ampdu_stream {
159 struct ieee80211_sta *sta;
160 u8 tid;
161 u8 state;
162 u8 idx;
163 u8 txq_idx; /* index of this stream in priv->txq */
164 };
165
166 struct mwl8k_priv {
167 struct ieee80211_hw *hw;
168 struct pci_dev *pdev;
169 int irq;
170
171 struct mwl8k_device_info *device_info;
172
173 void __iomem *sram;
174 void __iomem *regs;
175
176 /* firmware */
177 const struct firmware *fw_helper;
178 const struct firmware *fw_ucode;
179
180 /* hardware/firmware parameters */
181 bool ap_fw;
182 struct rxd_ops *rxd_ops;
183 struct ieee80211_supported_band band_24;
184 struct ieee80211_channel channels_24[14];
185 struct ieee80211_rate rates_24[14];
186 struct ieee80211_supported_band band_50;
187 struct ieee80211_channel channels_50[4];
188 struct ieee80211_rate rates_50[9];
189 u32 ap_macids_supported;
190 u32 sta_macids_supported;
191
192 /* Ampdu stream information */
193 u8 num_ampdu_queues;
194 spinlock_t stream_lock;
195 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
196 struct work_struct watchdog_ba_handle;
197
198 /* firmware access */
199 struct mutex fw_mutex;
200 struct task_struct *fw_mutex_owner;
201 struct task_struct *hw_restart_owner;
202 int fw_mutex_depth;
203 struct completion *hostcmd_wait;
204
205 /* lock held over TX and TX reap */
206 spinlock_t tx_lock;
207
208 /* TX quiesce completion, protected by fw_mutex and tx_lock */
209 struct completion *tx_wait;
210
211 /* List of interfaces. */
212 u32 macids_used;
213 struct list_head vif_list;
214
215 /* power management status cookie from firmware */
216 u32 *cookie;
217 dma_addr_t cookie_dma;
218
219 u16 num_mcaddrs;
220 u8 hw_rev;
221 u32 fw_rev;
222
223 /*
224 * Running count of TX packets in flight, to avoid
225 * iterating over the transmit rings each time.
226 */
227 int pending_tx_pkts;
228
229 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
230 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
231 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
232
233 bool radio_on;
234 bool radio_short_preamble;
235 bool sniffer_enabled;
236 bool wmm_enabled;
237
238 /* XXX need to convert this to handle multiple interfaces */
239 bool capture_beacon;
240 u8 capture_bssid[ETH_ALEN];
241 struct sk_buff *beacon_skb;
242
243 /*
244 * This FJ worker has to be global as it is scheduled from the
245 * RX handler. At this point we don't know which interface it
246 * belongs to until the list of bssids waiting to complete join
247 * is checked.
248 */
249 struct work_struct finalize_join_worker;
250
251 /* Tasklet to perform TX reclaim. */
252 struct tasklet_struct poll_tx_task;
253
254 /* Tasklet to perform RX. */
255 struct tasklet_struct poll_rx_task;
256
257 /* Most recently reported noise in dBm */
258 s8 noise;
259
260 /*
261 * preserve the queue configurations so they can be restored if/when
262 * the firmware image is swapped.
263 */
264 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
265
266 /* To perform the task of reloading the firmware */
267 struct work_struct fw_reload;
268 bool hw_restart_in_progress;
269
270 /* async firmware loading state */
271 unsigned fw_state;
272 char *fw_pref;
273 char *fw_alt;
274 struct completion firmware_loading_complete;
275 };
276
277 #define MAX_WEP_KEY_LEN 13
278 #define NUM_WEP_KEYS 4
279
280 /* Per interface specific private data */
281 struct mwl8k_vif {
282 struct list_head list;
283 struct ieee80211_vif *vif;
284
285 /* Firmware macid for this vif. */
286 int macid;
287
288 /* Non AMPDU sequence number assigned by driver. */
289 u16 seqno;
290
291 /* Saved WEP keys */
292 struct {
293 u8 enabled;
294 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
295 } wep_key_conf[NUM_WEP_KEYS];
296
297 /* BSSID */
298 u8 bssid[ETH_ALEN];
299
300 /* A flag to indicate is HW crypto is enabled for this bssid */
301 bool is_hw_crypto_enabled;
302 };
303 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
304 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
305
306 struct tx_traffic_info {
307 u32 start_time;
308 u32 pkts;
309 };
310
311 #define MWL8K_MAX_TID 8
312 struct mwl8k_sta {
313 /* Index into station database. Returned by UPDATE_STADB. */
314 u8 peer_id;
315 u8 is_ampdu_allowed;
316 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
317 };
318 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
319
320 static const struct ieee80211_channel mwl8k_channels_24[] = {
321 { .center_freq = 2412, .hw_value = 1, },
322 { .center_freq = 2417, .hw_value = 2, },
323 { .center_freq = 2422, .hw_value = 3, },
324 { .center_freq = 2427, .hw_value = 4, },
325 { .center_freq = 2432, .hw_value = 5, },
326 { .center_freq = 2437, .hw_value = 6, },
327 { .center_freq = 2442, .hw_value = 7, },
328 { .center_freq = 2447, .hw_value = 8, },
329 { .center_freq = 2452, .hw_value = 9, },
330 { .center_freq = 2457, .hw_value = 10, },
331 { .center_freq = 2462, .hw_value = 11, },
332 { .center_freq = 2467, .hw_value = 12, },
333 { .center_freq = 2472, .hw_value = 13, },
334 { .center_freq = 2484, .hw_value = 14, },
335 };
336
337 static const struct ieee80211_rate mwl8k_rates_24[] = {
338 { .bitrate = 10, .hw_value = 2, },
339 { .bitrate = 20, .hw_value = 4, },
340 { .bitrate = 55, .hw_value = 11, },
341 { .bitrate = 110, .hw_value = 22, },
342 { .bitrate = 220, .hw_value = 44, },
343 { .bitrate = 60, .hw_value = 12, },
344 { .bitrate = 90, .hw_value = 18, },
345 { .bitrate = 120, .hw_value = 24, },
346 { .bitrate = 180, .hw_value = 36, },
347 { .bitrate = 240, .hw_value = 48, },
348 { .bitrate = 360, .hw_value = 72, },
349 { .bitrate = 480, .hw_value = 96, },
350 { .bitrate = 540, .hw_value = 108, },
351 { .bitrate = 720, .hw_value = 144, },
352 };
353
354 static const struct ieee80211_channel mwl8k_channels_50[] = {
355 { .center_freq = 5180, .hw_value = 36, },
356 { .center_freq = 5200, .hw_value = 40, },
357 { .center_freq = 5220, .hw_value = 44, },
358 { .center_freq = 5240, .hw_value = 48, },
359 };
360
361 static const struct ieee80211_rate mwl8k_rates_50[] = {
362 { .bitrate = 60, .hw_value = 12, },
363 { .bitrate = 90, .hw_value = 18, },
364 { .bitrate = 120, .hw_value = 24, },
365 { .bitrate = 180, .hw_value = 36, },
366 { .bitrate = 240, .hw_value = 48, },
367 { .bitrate = 360, .hw_value = 72, },
368 { .bitrate = 480, .hw_value = 96, },
369 { .bitrate = 540, .hw_value = 108, },
370 { .bitrate = 720, .hw_value = 144, },
371 };
372
373 /* Set or get info from Firmware */
374 #define MWL8K_CMD_GET 0x0000
375 #define MWL8K_CMD_SET 0x0001
376 #define MWL8K_CMD_SET_LIST 0x0002
377
378 /* Firmware command codes */
379 #define MWL8K_CMD_CODE_DNLD 0x0001
380 #define MWL8K_CMD_GET_HW_SPEC 0x0003
381 #define MWL8K_CMD_SET_HW_SPEC 0x0004
382 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
383 #define MWL8K_CMD_GET_STAT 0x0014
384 #define MWL8K_CMD_RADIO_CONTROL 0x001c
385 #define MWL8K_CMD_RF_TX_POWER 0x001e
386 #define MWL8K_CMD_TX_POWER 0x001f
387 #define MWL8K_CMD_RF_ANTENNA 0x0020
388 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
389 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
390 #define MWL8K_CMD_SET_POST_SCAN 0x0108
391 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
392 #define MWL8K_CMD_SET_AID 0x010d
393 #define MWL8K_CMD_SET_RATE 0x0110
394 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
395 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
396 #define MWL8K_CMD_SET_SLOT 0x0114
397 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
398 #define MWL8K_CMD_SET_WMM_MODE 0x0123
399 #define MWL8K_CMD_MIMO_CONFIG 0x0125
400 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
401 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
402 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
403 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
404 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
405 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
406 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
407 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
408 #define MWL8K_CMD_UPDATE_STADB 0x1123
409 #define MWL8K_CMD_BASTREAM 0x1125
410
mwl8k_cmd_name(__le16 cmd,char * buf,int bufsize)411 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
412 {
413 u16 command = le16_to_cpu(cmd);
414
415 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
416 snprintf(buf, bufsize, "%s", #x);\
417 return buf;\
418 } while (0)
419 switch (command & ~0x8000) {
420 MWL8K_CMDNAME(CODE_DNLD);
421 MWL8K_CMDNAME(GET_HW_SPEC);
422 MWL8K_CMDNAME(SET_HW_SPEC);
423 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
424 MWL8K_CMDNAME(GET_STAT);
425 MWL8K_CMDNAME(RADIO_CONTROL);
426 MWL8K_CMDNAME(RF_TX_POWER);
427 MWL8K_CMDNAME(TX_POWER);
428 MWL8K_CMDNAME(RF_ANTENNA);
429 MWL8K_CMDNAME(SET_BEACON);
430 MWL8K_CMDNAME(SET_PRE_SCAN);
431 MWL8K_CMDNAME(SET_POST_SCAN);
432 MWL8K_CMDNAME(SET_RF_CHANNEL);
433 MWL8K_CMDNAME(SET_AID);
434 MWL8K_CMDNAME(SET_RATE);
435 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
436 MWL8K_CMDNAME(RTS_THRESHOLD);
437 MWL8K_CMDNAME(SET_SLOT);
438 MWL8K_CMDNAME(SET_EDCA_PARAMS);
439 MWL8K_CMDNAME(SET_WMM_MODE);
440 MWL8K_CMDNAME(MIMO_CONFIG);
441 MWL8K_CMDNAME(USE_FIXED_RATE);
442 MWL8K_CMDNAME(ENABLE_SNIFFER);
443 MWL8K_CMDNAME(SET_MAC_ADDR);
444 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
445 MWL8K_CMDNAME(BSS_START);
446 MWL8K_CMDNAME(SET_NEW_STN);
447 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
448 MWL8K_CMDNAME(UPDATE_STADB);
449 MWL8K_CMDNAME(BASTREAM);
450 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
451 default:
452 snprintf(buf, bufsize, "0x%x", cmd);
453 }
454 #undef MWL8K_CMDNAME
455
456 return buf;
457 }
458
459 /* Hardware and firmware reset */
mwl8k_hw_reset(struct mwl8k_priv * priv)460 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
461 {
462 iowrite32(MWL8K_H2A_INT_RESET,
463 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
464 iowrite32(MWL8K_H2A_INT_RESET,
465 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
466 msleep(20);
467 }
468
469 /* Release fw image */
mwl8k_release_fw(const struct firmware ** fw)470 static void mwl8k_release_fw(const struct firmware **fw)
471 {
472 if (*fw == NULL)
473 return;
474 release_firmware(*fw);
475 *fw = NULL;
476 }
477
mwl8k_release_firmware(struct mwl8k_priv * priv)478 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
479 {
480 mwl8k_release_fw(&priv->fw_ucode);
481 mwl8k_release_fw(&priv->fw_helper);
482 }
483
484 /* states for asynchronous f/w loading */
485 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
486 enum {
487 FW_STATE_INIT = 0,
488 FW_STATE_LOADING_PREF,
489 FW_STATE_LOADING_ALT,
490 FW_STATE_ERROR,
491 };
492
493 /* Request fw image */
mwl8k_request_fw(struct mwl8k_priv * priv,const char * fname,const struct firmware ** fw,bool nowait)494 static int mwl8k_request_fw(struct mwl8k_priv *priv,
495 const char *fname, const struct firmware **fw,
496 bool nowait)
497 {
498 /* release current image */
499 if (*fw != NULL)
500 mwl8k_release_fw(fw);
501
502 if (nowait)
503 return request_firmware_nowait(THIS_MODULE, 1, fname,
504 &priv->pdev->dev, GFP_KERNEL,
505 priv, mwl8k_fw_state_machine);
506 else
507 return request_firmware(fw, fname, &priv->pdev->dev);
508 }
509
mwl8k_request_firmware(struct mwl8k_priv * priv,char * fw_image,bool nowait)510 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
511 bool nowait)
512 {
513 struct mwl8k_device_info *di = priv->device_info;
514 int rc;
515
516 if (di->helper_image != NULL) {
517 if (nowait)
518 rc = mwl8k_request_fw(priv, di->helper_image,
519 &priv->fw_helper, true);
520 else
521 rc = mwl8k_request_fw(priv, di->helper_image,
522 &priv->fw_helper, false);
523 if (rc)
524 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
525 pci_name(priv->pdev), di->helper_image);
526
527 if (rc || nowait)
528 return rc;
529 }
530
531 if (nowait) {
532 /*
533 * if we get here, no helper image is needed. Skip the
534 * FW_STATE_INIT state.
535 */
536 priv->fw_state = FW_STATE_LOADING_PREF;
537 rc = mwl8k_request_fw(priv, fw_image,
538 &priv->fw_ucode,
539 true);
540 } else
541 rc = mwl8k_request_fw(priv, fw_image,
542 &priv->fw_ucode, false);
543 if (rc) {
544 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
545 pci_name(priv->pdev), fw_image);
546 mwl8k_release_fw(&priv->fw_helper);
547 return rc;
548 }
549
550 return 0;
551 }
552
553 struct mwl8k_cmd_pkt {
554 __le16 code;
555 __le16 length;
556 __u8 seq_num;
557 __u8 macid;
558 __le16 result;
559 char payload[0];
560 } __packed;
561
562 /*
563 * Firmware loading.
564 */
565 static int
mwl8k_send_fw_load_cmd(struct mwl8k_priv * priv,void * data,int length)566 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
567 {
568 void __iomem *regs = priv->regs;
569 dma_addr_t dma_addr;
570 int loops;
571
572 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
573 if (pci_dma_mapping_error(priv->pdev, dma_addr))
574 return -ENOMEM;
575
576 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
577 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
578 iowrite32(MWL8K_H2A_INT_DOORBELL,
579 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
580 iowrite32(MWL8K_H2A_INT_DUMMY,
581 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
582
583 loops = 1000;
584 do {
585 u32 int_code;
586
587 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
588 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
589 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
590 break;
591 }
592
593 cond_resched();
594 udelay(1);
595 } while (--loops);
596
597 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
598
599 return loops ? 0 : -ETIMEDOUT;
600 }
601
mwl8k_load_fw_image(struct mwl8k_priv * priv,const u8 * data,size_t length)602 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
603 const u8 *data, size_t length)
604 {
605 struct mwl8k_cmd_pkt *cmd;
606 int done;
607 int rc = 0;
608
609 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
610 if (cmd == NULL)
611 return -ENOMEM;
612
613 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
614 cmd->seq_num = 0;
615 cmd->macid = 0;
616 cmd->result = 0;
617
618 done = 0;
619 while (length) {
620 int block_size = length > 256 ? 256 : length;
621
622 memcpy(cmd->payload, data + done, block_size);
623 cmd->length = cpu_to_le16(block_size);
624
625 rc = mwl8k_send_fw_load_cmd(priv, cmd,
626 sizeof(*cmd) + block_size);
627 if (rc)
628 break;
629
630 done += block_size;
631 length -= block_size;
632 }
633
634 if (!rc) {
635 cmd->length = 0;
636 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
637 }
638
639 kfree(cmd);
640
641 return rc;
642 }
643
mwl8k_feed_fw_image(struct mwl8k_priv * priv,const u8 * data,size_t length)644 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
645 const u8 *data, size_t length)
646 {
647 unsigned char *buffer;
648 int may_continue, rc = 0;
649 u32 done, prev_block_size;
650
651 buffer = kmalloc(1024, GFP_KERNEL);
652 if (buffer == NULL)
653 return -ENOMEM;
654
655 done = 0;
656 prev_block_size = 0;
657 may_continue = 1000;
658 while (may_continue > 0) {
659 u32 block_size;
660
661 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
662 if (block_size & 1) {
663 block_size &= ~1;
664 may_continue--;
665 } else {
666 done += prev_block_size;
667 length -= prev_block_size;
668 }
669
670 if (block_size > 1024 || block_size > length) {
671 rc = -EOVERFLOW;
672 break;
673 }
674
675 if (length == 0) {
676 rc = 0;
677 break;
678 }
679
680 if (block_size == 0) {
681 rc = -EPROTO;
682 may_continue--;
683 udelay(1);
684 continue;
685 }
686
687 prev_block_size = block_size;
688 memcpy(buffer, data + done, block_size);
689
690 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
691 if (rc)
692 break;
693 }
694
695 if (!rc && length != 0)
696 rc = -EREMOTEIO;
697
698 kfree(buffer);
699
700 return rc;
701 }
702
mwl8k_load_firmware(struct ieee80211_hw * hw)703 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
704 {
705 struct mwl8k_priv *priv = hw->priv;
706 const struct firmware *fw = priv->fw_ucode;
707 int rc;
708 int loops;
709
710 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
711 const struct firmware *helper = priv->fw_helper;
712
713 if (helper == NULL) {
714 printk(KERN_ERR "%s: helper image needed but none "
715 "given\n", pci_name(priv->pdev));
716 return -EINVAL;
717 }
718
719 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
720 if (rc) {
721 printk(KERN_ERR "%s: unable to load firmware "
722 "helper image\n", pci_name(priv->pdev));
723 return rc;
724 }
725 msleep(20);
726
727 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
728 } else {
729 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
730 }
731
732 if (rc) {
733 printk(KERN_ERR "%s: unable to load firmware image\n",
734 pci_name(priv->pdev));
735 return rc;
736 }
737
738 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
739
740 loops = 500000;
741 do {
742 u32 ready_code;
743
744 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
745 if (ready_code == MWL8K_FWAP_READY) {
746 priv->ap_fw = true;
747 break;
748 } else if (ready_code == MWL8K_FWSTA_READY) {
749 priv->ap_fw = false;
750 break;
751 }
752
753 cond_resched();
754 udelay(1);
755 } while (--loops);
756
757 return loops ? 0 : -ETIMEDOUT;
758 }
759
760
761 /* DMA header used by firmware and hardware. */
762 struct mwl8k_dma_data {
763 __le16 fwlen;
764 struct ieee80211_hdr wh;
765 char data[0];
766 } __packed;
767
768 /* Routines to add/remove DMA header from skb. */
mwl8k_remove_dma_header(struct sk_buff * skb,__le16 qos)769 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
770 {
771 struct mwl8k_dma_data *tr;
772 int hdrlen;
773
774 tr = (struct mwl8k_dma_data *)skb->data;
775 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
776
777 if (hdrlen != sizeof(tr->wh)) {
778 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
779 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
780 *((__le16 *)(tr->data - 2)) = qos;
781 } else {
782 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
783 }
784 }
785
786 if (hdrlen != sizeof(*tr))
787 skb_pull(skb, sizeof(*tr) - hdrlen);
788 }
789
790 #define REDUCED_TX_HEADROOM 8
791
792 static void
mwl8k_add_dma_header(struct mwl8k_priv * priv,struct sk_buff * skb,int head_pad,int tail_pad)793 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
794 int head_pad, int tail_pad)
795 {
796 struct ieee80211_hdr *wh;
797 int hdrlen;
798 int reqd_hdrlen;
799 struct mwl8k_dma_data *tr;
800
801 /*
802 * Add a firmware DMA header; the firmware requires that we
803 * present a 2-byte payload length followed by a 4-address
804 * header (without QoS field), followed (optionally) by any
805 * WEP/ExtIV header (but only filled in for CCMP).
806 */
807 wh = (struct ieee80211_hdr *)skb->data;
808
809 hdrlen = ieee80211_hdrlen(wh->frame_control);
810
811 /*
812 * Check if skb_resize is required because of
813 * tx_headroom adjustment.
814 */
815 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
816 + REDUCED_TX_HEADROOM))) {
817 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
818
819 wiphy_err(priv->hw->wiphy,
820 "Failed to reallocate TX buffer\n");
821 return;
822 }
823 skb->truesize += REDUCED_TX_HEADROOM;
824 }
825
826 reqd_hdrlen = sizeof(*tr) + head_pad;
827
828 if (hdrlen != reqd_hdrlen)
829 skb_push(skb, reqd_hdrlen - hdrlen);
830
831 if (ieee80211_is_data_qos(wh->frame_control))
832 hdrlen -= IEEE80211_QOS_CTL_LEN;
833
834 tr = (struct mwl8k_dma_data *)skb->data;
835 if (wh != &tr->wh)
836 memmove(&tr->wh, wh, hdrlen);
837 if (hdrlen != sizeof(tr->wh))
838 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
839
840 /*
841 * Firmware length is the length of the fully formed "802.11
842 * payload". That is, everything except for the 802.11 header.
843 * This includes all crypto material including the MIC.
844 */
845 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
846 }
847
mwl8k_encapsulate_tx_frame(struct mwl8k_priv * priv,struct sk_buff * skb)848 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
849 struct sk_buff *skb)
850 {
851 struct ieee80211_hdr *wh;
852 struct ieee80211_tx_info *tx_info;
853 struct ieee80211_key_conf *key_conf;
854 int data_pad;
855 int head_pad = 0;
856
857 wh = (struct ieee80211_hdr *)skb->data;
858
859 tx_info = IEEE80211_SKB_CB(skb);
860
861 key_conf = NULL;
862 if (ieee80211_is_data(wh->frame_control))
863 key_conf = tx_info->control.hw_key;
864
865 /*
866 * Make sure the packet header is in the DMA header format (4-address
867 * without QoS), and add head & tail padding when HW crypto is enabled.
868 *
869 * We have the following trailer padding requirements:
870 * - WEP: 4 trailer bytes (ICV)
871 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
872 * - CCMP: 8 trailer bytes (MIC)
873 */
874 data_pad = 0;
875 if (key_conf != NULL) {
876 head_pad = key_conf->iv_len;
877 switch (key_conf->cipher) {
878 case WLAN_CIPHER_SUITE_WEP40:
879 case WLAN_CIPHER_SUITE_WEP104:
880 data_pad = 4;
881 break;
882 case WLAN_CIPHER_SUITE_TKIP:
883 data_pad = 12;
884 break;
885 case WLAN_CIPHER_SUITE_CCMP:
886 data_pad = 8;
887 break;
888 }
889 }
890 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
891 }
892
893 /*
894 * Packet reception for 88w8366 AP firmware.
895 */
896 struct mwl8k_rxd_8366_ap {
897 __le16 pkt_len;
898 __u8 sq2;
899 __u8 rate;
900 __le32 pkt_phys_addr;
901 __le32 next_rxd_phys_addr;
902 __le16 qos_control;
903 __le16 htsig2;
904 __le32 hw_rssi_info;
905 __le32 hw_noise_floor_info;
906 __u8 noise_floor;
907 __u8 pad0[3];
908 __u8 rssi;
909 __u8 rx_status;
910 __u8 channel;
911 __u8 rx_ctrl;
912 } __packed;
913
914 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
915 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
916 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
917
918 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
919
920 /* 8366 AP rx_status bits */
921 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
922 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
923 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
924 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
925 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
926
mwl8k_rxd_8366_ap_init(void * _rxd,dma_addr_t next_dma_addr)927 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
928 {
929 struct mwl8k_rxd_8366_ap *rxd = _rxd;
930
931 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
932 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
933 }
934
mwl8k_rxd_8366_ap_refill(void * _rxd,dma_addr_t addr,int len)935 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
936 {
937 struct mwl8k_rxd_8366_ap *rxd = _rxd;
938
939 rxd->pkt_len = cpu_to_le16(len);
940 rxd->pkt_phys_addr = cpu_to_le32(addr);
941 wmb();
942 rxd->rx_ctrl = 0;
943 }
944
945 static int
mwl8k_rxd_8366_ap_process(void * _rxd,struct ieee80211_rx_status * status,__le16 * qos,s8 * noise)946 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
947 __le16 *qos, s8 *noise)
948 {
949 struct mwl8k_rxd_8366_ap *rxd = _rxd;
950
951 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
952 return -1;
953 rmb();
954
955 memset(status, 0, sizeof(*status));
956
957 status->signal = -rxd->rssi;
958 *noise = -rxd->noise_floor;
959
960 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
961 status->flag |= RX_FLAG_HT;
962 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
963 status->flag |= RX_FLAG_40MHZ;
964 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
965 } else {
966 int i;
967
968 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
969 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
970 status->rate_idx = i;
971 break;
972 }
973 }
974 }
975
976 if (rxd->channel > 14) {
977 status->band = IEEE80211_BAND_5GHZ;
978 if (!(status->flag & RX_FLAG_HT))
979 status->rate_idx -= 5;
980 } else {
981 status->band = IEEE80211_BAND_2GHZ;
982 }
983 status->freq = ieee80211_channel_to_frequency(rxd->channel,
984 status->band);
985
986 *qos = rxd->qos_control;
987
988 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
989 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
990 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
991 status->flag |= RX_FLAG_MMIC_ERROR;
992
993 return le16_to_cpu(rxd->pkt_len);
994 }
995
996 static struct rxd_ops rxd_8366_ap_ops = {
997 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
998 .rxd_init = mwl8k_rxd_8366_ap_init,
999 .rxd_refill = mwl8k_rxd_8366_ap_refill,
1000 .rxd_process = mwl8k_rxd_8366_ap_process,
1001 };
1002
1003 /*
1004 * Packet reception for STA firmware.
1005 */
1006 struct mwl8k_rxd_sta {
1007 __le16 pkt_len;
1008 __u8 link_quality;
1009 __u8 noise_level;
1010 __le32 pkt_phys_addr;
1011 __le32 next_rxd_phys_addr;
1012 __le16 qos_control;
1013 __le16 rate_info;
1014 __le32 pad0[4];
1015 __u8 rssi;
1016 __u8 channel;
1017 __le16 pad1;
1018 __u8 rx_ctrl;
1019 __u8 rx_status;
1020 __u8 pad2[2];
1021 } __packed;
1022
1023 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1024 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1025 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1026 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1027 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1028 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1029
1030 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1031 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1032 /* ICV=0 or MIC=1 */
1033 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1034 /* Key is uploaded only in failure case */
1035 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1036
mwl8k_rxd_sta_init(void * _rxd,dma_addr_t next_dma_addr)1037 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1038 {
1039 struct mwl8k_rxd_sta *rxd = _rxd;
1040
1041 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1042 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1043 }
1044
mwl8k_rxd_sta_refill(void * _rxd,dma_addr_t addr,int len)1045 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1046 {
1047 struct mwl8k_rxd_sta *rxd = _rxd;
1048
1049 rxd->pkt_len = cpu_to_le16(len);
1050 rxd->pkt_phys_addr = cpu_to_le32(addr);
1051 wmb();
1052 rxd->rx_ctrl = 0;
1053 }
1054
1055 static int
mwl8k_rxd_sta_process(void * _rxd,struct ieee80211_rx_status * status,__le16 * qos,s8 * noise)1056 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1057 __le16 *qos, s8 *noise)
1058 {
1059 struct mwl8k_rxd_sta *rxd = _rxd;
1060 u16 rate_info;
1061
1062 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1063 return -1;
1064 rmb();
1065
1066 rate_info = le16_to_cpu(rxd->rate_info);
1067
1068 memset(status, 0, sizeof(*status));
1069
1070 status->signal = -rxd->rssi;
1071 *noise = -rxd->noise_level;
1072 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1073 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1074
1075 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1076 status->flag |= RX_FLAG_SHORTPRE;
1077 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1078 status->flag |= RX_FLAG_40MHZ;
1079 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1080 status->flag |= RX_FLAG_SHORT_GI;
1081 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1082 status->flag |= RX_FLAG_HT;
1083
1084 if (rxd->channel > 14) {
1085 status->band = IEEE80211_BAND_5GHZ;
1086 if (!(status->flag & RX_FLAG_HT))
1087 status->rate_idx -= 5;
1088 } else {
1089 status->band = IEEE80211_BAND_2GHZ;
1090 }
1091 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1092 status->band);
1093
1094 *qos = rxd->qos_control;
1095 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1096 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1097 status->flag |= RX_FLAG_MMIC_ERROR;
1098
1099 return le16_to_cpu(rxd->pkt_len);
1100 }
1101
1102 static struct rxd_ops rxd_sta_ops = {
1103 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1104 .rxd_init = mwl8k_rxd_sta_init,
1105 .rxd_refill = mwl8k_rxd_sta_refill,
1106 .rxd_process = mwl8k_rxd_sta_process,
1107 };
1108
1109
1110 #define MWL8K_RX_DESCS 256
1111 #define MWL8K_RX_MAXSZ 3800
1112
mwl8k_rxq_init(struct ieee80211_hw * hw,int index)1113 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1114 {
1115 struct mwl8k_priv *priv = hw->priv;
1116 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1117 int size;
1118 int i;
1119
1120 rxq->rxd_count = 0;
1121 rxq->head = 0;
1122 rxq->tail = 0;
1123
1124 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1125
1126 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1127 if (rxq->rxd == NULL) {
1128 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1129 return -ENOMEM;
1130 }
1131 memset(rxq->rxd, 0, size);
1132
1133 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1134 if (rxq->buf == NULL) {
1135 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1136 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1137 return -ENOMEM;
1138 }
1139
1140 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1141 int desc_size;
1142 void *rxd;
1143 int nexti;
1144 dma_addr_t next_dma_addr;
1145
1146 desc_size = priv->rxd_ops->rxd_size;
1147 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1148
1149 nexti = i + 1;
1150 if (nexti == MWL8K_RX_DESCS)
1151 nexti = 0;
1152 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1153
1154 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1155 }
1156
1157 return 0;
1158 }
1159
rxq_refill(struct ieee80211_hw * hw,int index,int limit)1160 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1161 {
1162 struct mwl8k_priv *priv = hw->priv;
1163 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1164 int refilled;
1165
1166 refilled = 0;
1167 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1168 struct sk_buff *skb;
1169 dma_addr_t addr;
1170 int rx;
1171 void *rxd;
1172
1173 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1174 if (skb == NULL)
1175 break;
1176
1177 addr = pci_map_single(priv->pdev, skb->data,
1178 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1179
1180 rxq->rxd_count++;
1181 rx = rxq->tail++;
1182 if (rxq->tail == MWL8K_RX_DESCS)
1183 rxq->tail = 0;
1184 rxq->buf[rx].skb = skb;
1185 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1186
1187 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1188 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1189
1190 refilled++;
1191 }
1192
1193 return refilled;
1194 }
1195
1196 /* Must be called only when the card's reception is completely halted */
mwl8k_rxq_deinit(struct ieee80211_hw * hw,int index)1197 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1198 {
1199 struct mwl8k_priv *priv = hw->priv;
1200 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1201 int i;
1202
1203 if (rxq->rxd == NULL)
1204 return;
1205
1206 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1207 if (rxq->buf[i].skb != NULL) {
1208 pci_unmap_single(priv->pdev,
1209 dma_unmap_addr(&rxq->buf[i], dma),
1210 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1211 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1212
1213 kfree_skb(rxq->buf[i].skb);
1214 rxq->buf[i].skb = NULL;
1215 }
1216 }
1217
1218 kfree(rxq->buf);
1219 rxq->buf = NULL;
1220
1221 pci_free_consistent(priv->pdev,
1222 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1223 rxq->rxd, rxq->rxd_dma);
1224 rxq->rxd = NULL;
1225 }
1226
1227
1228 /*
1229 * Scan a list of BSSIDs to process for finalize join.
1230 * Allows for extension to process multiple BSSIDs.
1231 */
1232 static inline int
mwl8k_capture_bssid(struct mwl8k_priv * priv,struct ieee80211_hdr * wh)1233 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1234 {
1235 return priv->capture_beacon &&
1236 ieee80211_is_beacon(wh->frame_control) &&
1237 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1238 }
1239
mwl8k_save_beacon(struct ieee80211_hw * hw,struct sk_buff * skb)1240 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1241 struct sk_buff *skb)
1242 {
1243 struct mwl8k_priv *priv = hw->priv;
1244
1245 priv->capture_beacon = false;
1246 memset(priv->capture_bssid, 0, ETH_ALEN);
1247
1248 /*
1249 * Use GFP_ATOMIC as rxq_process is called from
1250 * the primary interrupt handler, memory allocation call
1251 * must not sleep.
1252 */
1253 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1254 if (priv->beacon_skb != NULL)
1255 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1256 }
1257
mwl8k_find_vif_bss(struct list_head * vif_list,u8 * bssid)1258 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1259 u8 *bssid)
1260 {
1261 struct mwl8k_vif *mwl8k_vif;
1262
1263 list_for_each_entry(mwl8k_vif,
1264 vif_list, list) {
1265 if (memcmp(bssid, mwl8k_vif->bssid,
1266 ETH_ALEN) == 0)
1267 return mwl8k_vif;
1268 }
1269
1270 return NULL;
1271 }
1272
rxq_process(struct ieee80211_hw * hw,int index,int limit)1273 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1274 {
1275 struct mwl8k_priv *priv = hw->priv;
1276 struct mwl8k_vif *mwl8k_vif = NULL;
1277 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1278 int processed;
1279
1280 processed = 0;
1281 while (rxq->rxd_count && limit--) {
1282 struct sk_buff *skb;
1283 void *rxd;
1284 int pkt_len;
1285 struct ieee80211_rx_status status;
1286 struct ieee80211_hdr *wh;
1287 __le16 qos;
1288
1289 skb = rxq->buf[rxq->head].skb;
1290 if (skb == NULL)
1291 break;
1292
1293 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1294
1295 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1296 &priv->noise);
1297 if (pkt_len < 0)
1298 break;
1299
1300 rxq->buf[rxq->head].skb = NULL;
1301
1302 pci_unmap_single(priv->pdev,
1303 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1304 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1305 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1306
1307 rxq->head++;
1308 if (rxq->head == MWL8K_RX_DESCS)
1309 rxq->head = 0;
1310
1311 rxq->rxd_count--;
1312
1313 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1314
1315 /*
1316 * Check for a pending join operation. Save a
1317 * copy of the beacon and schedule a tasklet to
1318 * send a FINALIZE_JOIN command to the firmware.
1319 */
1320 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1321 mwl8k_save_beacon(hw, skb);
1322
1323 if (ieee80211_has_protected(wh->frame_control)) {
1324
1325 /* Check if hw crypto has been enabled for
1326 * this bss. If yes, set the status flags
1327 * accordingly
1328 */
1329 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1330 wh->addr1);
1331
1332 if (mwl8k_vif != NULL &&
1333 mwl8k_vif->is_hw_crypto_enabled == true) {
1334 /*
1335 * When MMIC ERROR is encountered
1336 * by the firmware, payload is
1337 * dropped and only 32 bytes of
1338 * mwl8k Firmware header is sent
1339 * to the host.
1340 *
1341 * We need to add four bytes of
1342 * key information. In it
1343 * MAC80211 expects keyidx set to
1344 * 0 for triggering Counter
1345 * Measure of MMIC failure.
1346 */
1347 if (status.flag & RX_FLAG_MMIC_ERROR) {
1348 struct mwl8k_dma_data *tr;
1349 tr = (struct mwl8k_dma_data *)skb->data;
1350 memset((void *)&(tr->data), 0, 4);
1351 pkt_len += 4;
1352 }
1353
1354 if (!ieee80211_is_auth(wh->frame_control))
1355 status.flag |= RX_FLAG_IV_STRIPPED |
1356 RX_FLAG_DECRYPTED |
1357 RX_FLAG_MMIC_STRIPPED;
1358 }
1359 }
1360
1361 skb_put(skb, pkt_len);
1362 mwl8k_remove_dma_header(skb, qos);
1363 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1364 ieee80211_rx_irqsafe(hw, skb);
1365
1366 processed++;
1367 }
1368
1369 return processed;
1370 }
1371
1372
1373 /*
1374 * Packet transmission.
1375 */
1376
1377 #define MWL8K_TXD_STATUS_OK 0x00000001
1378 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1379 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1380 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1381 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1382
1383 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1384 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1385 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1386 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1387 #define MWL8K_QOS_EOSP 0x0010
1388
1389 struct mwl8k_tx_desc {
1390 __le32 status;
1391 __u8 data_rate;
1392 __u8 tx_priority;
1393 __le16 qos_control;
1394 __le32 pkt_phys_addr;
1395 __le16 pkt_len;
1396 __u8 dest_MAC_addr[ETH_ALEN];
1397 __le32 next_txd_phys_addr;
1398 __le32 timestamp;
1399 __le16 rate_info;
1400 __u8 peer_id;
1401 __u8 tx_frag_cnt;
1402 } __packed;
1403
1404 #define MWL8K_TX_DESCS 128
1405
mwl8k_txq_init(struct ieee80211_hw * hw,int index)1406 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1407 {
1408 struct mwl8k_priv *priv = hw->priv;
1409 struct mwl8k_tx_queue *txq = priv->txq + index;
1410 int size;
1411 int i;
1412
1413 txq->len = 0;
1414 txq->head = 0;
1415 txq->tail = 0;
1416
1417 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1418
1419 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1420 if (txq->txd == NULL) {
1421 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1422 return -ENOMEM;
1423 }
1424 memset(txq->txd, 0, size);
1425
1426 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1427 if (txq->skb == NULL) {
1428 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1429 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1430 return -ENOMEM;
1431 }
1432
1433 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1434 struct mwl8k_tx_desc *tx_desc;
1435 int nexti;
1436
1437 tx_desc = txq->txd + i;
1438 nexti = (i + 1) % MWL8K_TX_DESCS;
1439
1440 tx_desc->status = 0;
1441 tx_desc->next_txd_phys_addr =
1442 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1443 }
1444
1445 return 0;
1446 }
1447
mwl8k_tx_start(struct mwl8k_priv * priv)1448 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1449 {
1450 iowrite32(MWL8K_H2A_INT_PPA_READY,
1451 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1452 iowrite32(MWL8K_H2A_INT_DUMMY,
1453 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1454 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1455 }
1456
mwl8k_dump_tx_rings(struct ieee80211_hw * hw)1457 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1458 {
1459 struct mwl8k_priv *priv = hw->priv;
1460 int i;
1461
1462 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1463 struct mwl8k_tx_queue *txq = priv->txq + i;
1464 int fw_owned = 0;
1465 int drv_owned = 0;
1466 int unused = 0;
1467 int desc;
1468
1469 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1470 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1471 u32 status;
1472
1473 status = le32_to_cpu(tx_desc->status);
1474 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1475 fw_owned++;
1476 else
1477 drv_owned++;
1478
1479 if (tx_desc->pkt_len == 0)
1480 unused++;
1481 }
1482
1483 wiphy_err(hw->wiphy,
1484 "txq[%d] len=%d head=%d tail=%d "
1485 "fw_owned=%d drv_owned=%d unused=%d\n",
1486 i,
1487 txq->len, txq->head, txq->tail,
1488 fw_owned, drv_owned, unused);
1489 }
1490 }
1491
1492 /*
1493 * Must be called with priv->fw_mutex held and tx queues stopped.
1494 */
1495 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1496
mwl8k_tx_wait_empty(struct ieee80211_hw * hw)1497 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1498 {
1499 struct mwl8k_priv *priv = hw->priv;
1500 DECLARE_COMPLETION_ONSTACK(tx_wait);
1501 int retry;
1502 int rc;
1503
1504 might_sleep();
1505
1506 /* Since fw restart is in progress, allow only the firmware
1507 * commands from the restart code and block the other
1508 * commands since they are going to fail in any case since
1509 * the firmware has crashed
1510 */
1511 if (priv->hw_restart_in_progress) {
1512 if (priv->hw_restart_owner == current)
1513 return 0;
1514 else
1515 return -EBUSY;
1516 }
1517
1518 /*
1519 * The TX queues are stopped at this point, so this test
1520 * doesn't need to take ->tx_lock.
1521 */
1522 if (!priv->pending_tx_pkts)
1523 return 0;
1524
1525 retry = 0;
1526 rc = 0;
1527
1528 spin_lock_bh(&priv->tx_lock);
1529 priv->tx_wait = &tx_wait;
1530 while (!rc) {
1531 int oldcount;
1532 unsigned long timeout;
1533
1534 oldcount = priv->pending_tx_pkts;
1535
1536 spin_unlock_bh(&priv->tx_lock);
1537 timeout = wait_for_completion_timeout(&tx_wait,
1538 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1539 spin_lock_bh(&priv->tx_lock);
1540
1541 if (timeout) {
1542 WARN_ON(priv->pending_tx_pkts);
1543 if (retry)
1544 wiphy_notice(hw->wiphy, "tx rings drained\n");
1545 break;
1546 }
1547
1548 if (priv->pending_tx_pkts < oldcount) {
1549 wiphy_notice(hw->wiphy,
1550 "waiting for tx rings to drain (%d -> %d pkts)\n",
1551 oldcount, priv->pending_tx_pkts);
1552 retry = 1;
1553 continue;
1554 }
1555
1556 priv->tx_wait = NULL;
1557
1558 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1559 MWL8K_TX_WAIT_TIMEOUT_MS);
1560 mwl8k_dump_tx_rings(hw);
1561 priv->hw_restart_in_progress = true;
1562 ieee80211_queue_work(hw, &priv->fw_reload);
1563
1564 rc = -ETIMEDOUT;
1565 }
1566 spin_unlock_bh(&priv->tx_lock);
1567
1568 return rc;
1569 }
1570
1571 #define MWL8K_TXD_SUCCESS(status) \
1572 ((status) & (MWL8K_TXD_STATUS_OK | \
1573 MWL8K_TXD_STATUS_OK_RETRY | \
1574 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1575
mwl8k_tid_queue_mapping(u8 tid)1576 static int mwl8k_tid_queue_mapping(u8 tid)
1577 {
1578 BUG_ON(tid > 7);
1579
1580 switch (tid) {
1581 case 0:
1582 case 3:
1583 return IEEE80211_AC_BE;
1584 break;
1585 case 1:
1586 case 2:
1587 return IEEE80211_AC_BK;
1588 break;
1589 case 4:
1590 case 5:
1591 return IEEE80211_AC_VI;
1592 break;
1593 case 6:
1594 case 7:
1595 return IEEE80211_AC_VO;
1596 break;
1597 default:
1598 return -1;
1599 break;
1600 }
1601 }
1602
1603 /* The firmware will fill in the rate information
1604 * for each packet that gets queued in the hardware
1605 * and these macros will interpret that info.
1606 */
1607
1608 #define RI_FORMAT(a) (a & 0x0001)
1609 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1610
1611 static int
mwl8k_txq_reclaim(struct ieee80211_hw * hw,int index,int limit,int force)1612 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1613 {
1614 struct mwl8k_priv *priv = hw->priv;
1615 struct mwl8k_tx_queue *txq = priv->txq + index;
1616 int processed;
1617
1618 processed = 0;
1619 while (txq->len > 0 && limit--) {
1620 int tx;
1621 struct mwl8k_tx_desc *tx_desc;
1622 unsigned long addr;
1623 int size;
1624 struct sk_buff *skb;
1625 struct ieee80211_tx_info *info;
1626 u32 status;
1627 struct ieee80211_sta *sta;
1628 struct mwl8k_sta *sta_info = NULL;
1629 u16 rate_info;
1630 struct ieee80211_hdr *wh;
1631
1632 tx = txq->head;
1633 tx_desc = txq->txd + tx;
1634
1635 status = le32_to_cpu(tx_desc->status);
1636
1637 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1638 if (!force)
1639 break;
1640 tx_desc->status &=
1641 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1642 }
1643
1644 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1645 BUG_ON(txq->len == 0);
1646 txq->len--;
1647 priv->pending_tx_pkts--;
1648
1649 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1650 size = le16_to_cpu(tx_desc->pkt_len);
1651 skb = txq->skb[tx];
1652 txq->skb[tx] = NULL;
1653
1654 BUG_ON(skb == NULL);
1655 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1656
1657 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1658
1659 wh = (struct ieee80211_hdr *) skb->data;
1660
1661 /* Mark descriptor as unused */
1662 tx_desc->pkt_phys_addr = 0;
1663 tx_desc->pkt_len = 0;
1664
1665 info = IEEE80211_SKB_CB(skb);
1666 if (ieee80211_is_data(wh->frame_control)) {
1667 sta = info->control.sta;
1668 if (sta) {
1669 sta_info = MWL8K_STA(sta);
1670 BUG_ON(sta_info == NULL);
1671 rate_info = le16_to_cpu(tx_desc->rate_info);
1672 /* If rate is < 6.5 Mpbs for an ht station
1673 * do not form an ampdu. If the station is a
1674 * legacy station (format = 0), do not form an
1675 * ampdu
1676 */
1677 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1678 RI_FORMAT(rate_info) == 0) {
1679 sta_info->is_ampdu_allowed = false;
1680 } else {
1681 sta_info->is_ampdu_allowed = true;
1682 }
1683 }
1684 }
1685
1686 ieee80211_tx_info_clear_status(info);
1687
1688 /* Rate control is happening in the firmware.
1689 * Ensure no tx rate is being reported.
1690 */
1691 info->status.rates[0].idx = -1;
1692 info->status.rates[0].count = 1;
1693
1694 if (MWL8K_TXD_SUCCESS(status))
1695 info->flags |= IEEE80211_TX_STAT_ACK;
1696
1697 ieee80211_tx_status_irqsafe(hw, skb);
1698
1699 processed++;
1700 }
1701
1702 return processed;
1703 }
1704
1705 /* must be called only when the card's transmit is completely halted */
mwl8k_txq_deinit(struct ieee80211_hw * hw,int index)1706 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1707 {
1708 struct mwl8k_priv *priv = hw->priv;
1709 struct mwl8k_tx_queue *txq = priv->txq + index;
1710
1711 if (txq->txd == NULL)
1712 return;
1713
1714 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1715
1716 kfree(txq->skb);
1717 txq->skb = NULL;
1718
1719 pci_free_consistent(priv->pdev,
1720 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1721 txq->txd, txq->txd_dma);
1722 txq->txd = NULL;
1723 }
1724
1725 /* caller must hold priv->stream_lock when calling the stream functions */
1726 static struct mwl8k_ampdu_stream *
mwl8k_add_stream(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u8 tid)1727 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1728 {
1729 struct mwl8k_ampdu_stream *stream;
1730 struct mwl8k_priv *priv = hw->priv;
1731 int i;
1732
1733 for (i = 0; i < priv->num_ampdu_queues; i++) {
1734 stream = &priv->ampdu[i];
1735 if (stream->state == AMPDU_NO_STREAM) {
1736 stream->sta = sta;
1737 stream->state = AMPDU_STREAM_NEW;
1738 stream->tid = tid;
1739 stream->idx = i;
1740 stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1741 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1742 sta->addr, tid);
1743 return stream;
1744 }
1745 }
1746 return NULL;
1747 }
1748
1749 static int
mwl8k_start_stream(struct ieee80211_hw * hw,struct mwl8k_ampdu_stream * stream)1750 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1751 {
1752 int ret;
1753
1754 /* if the stream has already been started, don't start it again */
1755 if (stream->state != AMPDU_STREAM_NEW)
1756 return 0;
1757 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1758 if (ret)
1759 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1760 "%d\n", stream->sta->addr, stream->tid, ret);
1761 else
1762 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1763 stream->sta->addr, stream->tid);
1764 return ret;
1765 }
1766
1767 static void
mwl8k_remove_stream(struct ieee80211_hw * hw,struct mwl8k_ampdu_stream * stream)1768 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1769 {
1770 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1771 stream->tid);
1772 memset(stream, 0, sizeof(*stream));
1773 }
1774
1775 static struct mwl8k_ampdu_stream *
mwl8k_lookup_stream(struct ieee80211_hw * hw,u8 * addr,u8 tid)1776 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1777 {
1778 struct mwl8k_priv *priv = hw->priv;
1779 int i;
1780
1781 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1782 struct mwl8k_ampdu_stream *stream;
1783 stream = &priv->ampdu[i];
1784 if (stream->state == AMPDU_NO_STREAM)
1785 continue;
1786 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1787 stream->tid == tid)
1788 return stream;
1789 }
1790 return NULL;
1791 }
1792
1793 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
mwl8k_ampdu_allowed(struct ieee80211_sta * sta,u8 tid)1794 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1795 {
1796 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1797 struct tx_traffic_info *tx_stats;
1798
1799 BUG_ON(tid >= MWL8K_MAX_TID);
1800 tx_stats = &sta_info->tx_stats[tid];
1801
1802 return sta_info->is_ampdu_allowed &&
1803 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1804 }
1805
mwl8k_tx_count_packet(struct ieee80211_sta * sta,u8 tid)1806 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1807 {
1808 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1809 struct tx_traffic_info *tx_stats;
1810
1811 BUG_ON(tid >= MWL8K_MAX_TID);
1812 tx_stats = &sta_info->tx_stats[tid];
1813
1814 if (tx_stats->start_time == 0)
1815 tx_stats->start_time = jiffies;
1816
1817 /* reset the packet count after each second elapses. If the number of
1818 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1819 * an ampdu stream to be started.
1820 */
1821 if (jiffies - tx_stats->start_time > HZ) {
1822 tx_stats->pkts = 0;
1823 tx_stats->start_time = 0;
1824 } else
1825 tx_stats->pkts++;
1826 }
1827
1828 static void
mwl8k_txq_xmit(struct ieee80211_hw * hw,int index,struct sk_buff * skb)1829 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1830 {
1831 struct mwl8k_priv *priv = hw->priv;
1832 struct ieee80211_tx_info *tx_info;
1833 struct mwl8k_vif *mwl8k_vif;
1834 struct ieee80211_sta *sta;
1835 struct ieee80211_hdr *wh;
1836 struct mwl8k_tx_queue *txq;
1837 struct mwl8k_tx_desc *tx;
1838 dma_addr_t dma;
1839 u32 txstatus;
1840 u8 txdatarate;
1841 u16 qos;
1842 int txpriority;
1843 u8 tid = 0;
1844 struct mwl8k_ampdu_stream *stream = NULL;
1845 bool start_ba_session = false;
1846 bool mgmtframe = false;
1847 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1848
1849 wh = (struct ieee80211_hdr *)skb->data;
1850 if (ieee80211_is_data_qos(wh->frame_control))
1851 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1852 else
1853 qos = 0;
1854
1855 if (ieee80211_is_mgmt(wh->frame_control))
1856 mgmtframe = true;
1857
1858 if (priv->ap_fw)
1859 mwl8k_encapsulate_tx_frame(priv, skb);
1860 else
1861 mwl8k_add_dma_header(priv, skb, 0, 0);
1862
1863 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1864
1865 tx_info = IEEE80211_SKB_CB(skb);
1866 sta = tx_info->control.sta;
1867 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1868
1869 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1870 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1871 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1872 mwl8k_vif->seqno += 0x10;
1873 }
1874
1875 /* Setup firmware control bit fields for each frame type. */
1876 txstatus = 0;
1877 txdatarate = 0;
1878 if (ieee80211_is_mgmt(wh->frame_control) ||
1879 ieee80211_is_ctl(wh->frame_control)) {
1880 txdatarate = 0;
1881 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1882 } else if (ieee80211_is_data(wh->frame_control)) {
1883 txdatarate = 1;
1884 if (is_multicast_ether_addr(wh->addr1))
1885 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1886
1887 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1888 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1889 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1890 else
1891 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1892 }
1893
1894 /* Queue ADDBA request in the respective data queue. While setting up
1895 * the ampdu stream, mac80211 queues further packets for that
1896 * particular ra/tid pair. However, packets piled up in the hardware
1897 * for that ra/tid pair will still go out. ADDBA request and the
1898 * related data packets going out from different queues asynchronously
1899 * will cause a shift in the receiver window which might result in
1900 * ampdu packets getting dropped at the receiver after the stream has
1901 * been setup.
1902 */
1903 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1904 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1905 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1906 priv->ap_fw)) {
1907 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1908 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1909 index = mwl8k_tid_queue_mapping(tid);
1910 }
1911
1912 txpriority = index;
1913
1914 if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1915 && skb->protocol != cpu_to_be16(ETH_P_PAE)
1916 && ieee80211_is_data_qos(wh->frame_control)) {
1917 tid = qos & 0xf;
1918 mwl8k_tx_count_packet(sta, tid);
1919 spin_lock(&priv->stream_lock);
1920 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1921 if (stream != NULL) {
1922 if (stream->state == AMPDU_STREAM_ACTIVE) {
1923 txpriority = stream->txq_idx;
1924 index = stream->txq_idx;
1925 } else if (stream->state == AMPDU_STREAM_NEW) {
1926 /* We get here if the driver sends us packets
1927 * after we've initiated a stream, but before
1928 * our ampdu_action routine has been called
1929 * with IEEE80211_AMPDU_TX_START to get the SSN
1930 * for the ADDBA request. So this packet can
1931 * go out with no risk of sequence number
1932 * mismatch. No special handling is required.
1933 */
1934 } else {
1935 /* Drop packets that would go out after the
1936 * ADDBA request was sent but before the ADDBA
1937 * response is received. If we don't do this,
1938 * the recipient would probably receive it
1939 * after the ADDBA request with SSN 0. This
1940 * will cause the recipient's BA receive window
1941 * to shift, which would cause the subsequent
1942 * packets in the BA stream to be discarded.
1943 * mac80211 queues our packets for us in this
1944 * case, so this is really just a safety check.
1945 */
1946 wiphy_warn(hw->wiphy,
1947 "Cannot send packet while ADDBA "
1948 "dialog is underway.\n");
1949 spin_unlock(&priv->stream_lock);
1950 dev_kfree_skb(skb);
1951 return;
1952 }
1953 } else {
1954 /* Defer calling mwl8k_start_stream so that the current
1955 * skb can go out before the ADDBA request. This
1956 * prevents sequence number mismatch at the recepient
1957 * as described above.
1958 */
1959 if (mwl8k_ampdu_allowed(sta, tid)) {
1960 stream = mwl8k_add_stream(hw, sta, tid);
1961 if (stream != NULL)
1962 start_ba_session = true;
1963 }
1964 }
1965 spin_unlock(&priv->stream_lock);
1966 }
1967
1968 dma = pci_map_single(priv->pdev, skb->data,
1969 skb->len, PCI_DMA_TODEVICE);
1970
1971 if (pci_dma_mapping_error(priv->pdev, dma)) {
1972 wiphy_debug(hw->wiphy,
1973 "failed to dma map skb, dropping TX frame.\n");
1974 if (start_ba_session) {
1975 spin_lock(&priv->stream_lock);
1976 mwl8k_remove_stream(hw, stream);
1977 spin_unlock(&priv->stream_lock);
1978 }
1979 dev_kfree_skb(skb);
1980 return;
1981 }
1982
1983 spin_lock_bh(&priv->tx_lock);
1984
1985 txq = priv->txq + index;
1986
1987 /* Mgmt frames that go out frequently are probe
1988 * responses. Other mgmt frames got out relatively
1989 * infrequently. Hence reserve 2 buffers so that
1990 * other mgmt frames do not get dropped due to an
1991 * already queued probe response in one of the
1992 * reserved buffers.
1993 */
1994
1995 if (txq->len >= MWL8K_TX_DESCS - 2) {
1996 if (mgmtframe == false ||
1997 txq->len == MWL8K_TX_DESCS) {
1998 if (start_ba_session) {
1999 spin_lock(&priv->stream_lock);
2000 mwl8k_remove_stream(hw, stream);
2001 spin_unlock(&priv->stream_lock);
2002 }
2003 spin_unlock_bh(&priv->tx_lock);
2004 dev_kfree_skb(skb);
2005 return;
2006 }
2007 }
2008
2009 BUG_ON(txq->skb[txq->tail] != NULL);
2010 txq->skb[txq->tail] = skb;
2011
2012 tx = txq->txd + txq->tail;
2013 tx->data_rate = txdatarate;
2014 tx->tx_priority = txpriority;
2015 tx->qos_control = cpu_to_le16(qos);
2016 tx->pkt_phys_addr = cpu_to_le32(dma);
2017 tx->pkt_len = cpu_to_le16(skb->len);
2018 tx->rate_info = 0;
2019 if (!priv->ap_fw && tx_info->control.sta != NULL)
2020 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2021 else
2022 tx->peer_id = 0;
2023
2024 if (priv->ap_fw)
2025 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2026 MWL8K_HW_TIMER_REGISTER));
2027
2028 wmb();
2029 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2030
2031 txq->len++;
2032 priv->pending_tx_pkts++;
2033
2034 txq->tail++;
2035 if (txq->tail == MWL8K_TX_DESCS)
2036 txq->tail = 0;
2037
2038 mwl8k_tx_start(priv);
2039
2040 spin_unlock_bh(&priv->tx_lock);
2041
2042 /* Initiate the ampdu session here */
2043 if (start_ba_session) {
2044 spin_lock(&priv->stream_lock);
2045 if (mwl8k_start_stream(hw, stream))
2046 mwl8k_remove_stream(hw, stream);
2047 spin_unlock(&priv->stream_lock);
2048 }
2049 }
2050
2051
2052 /*
2053 * Firmware access.
2054 *
2055 * We have the following requirements for issuing firmware commands:
2056 * - Some commands require that the packet transmit path is idle when
2057 * the command is issued. (For simplicity, we'll just quiesce the
2058 * transmit path for every command.)
2059 * - There are certain sequences of commands that need to be issued to
2060 * the hardware sequentially, with no other intervening commands.
2061 *
2062 * This leads to an implementation of a "firmware lock" as a mutex that
2063 * can be taken recursively, and which is taken by both the low-level
2064 * command submission function (mwl8k_post_cmd) as well as any users of
2065 * that function that require issuing of an atomic sequence of commands,
2066 * and quiesces the transmit path whenever it's taken.
2067 */
mwl8k_fw_lock(struct ieee80211_hw * hw)2068 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2069 {
2070 struct mwl8k_priv *priv = hw->priv;
2071
2072 if (priv->fw_mutex_owner != current) {
2073 int rc;
2074
2075 mutex_lock(&priv->fw_mutex);
2076 ieee80211_stop_queues(hw);
2077
2078 rc = mwl8k_tx_wait_empty(hw);
2079 if (rc) {
2080 if (!priv->hw_restart_in_progress)
2081 ieee80211_wake_queues(hw);
2082
2083 mutex_unlock(&priv->fw_mutex);
2084
2085 return rc;
2086 }
2087
2088 priv->fw_mutex_owner = current;
2089 }
2090
2091 priv->fw_mutex_depth++;
2092
2093 return 0;
2094 }
2095
mwl8k_fw_unlock(struct ieee80211_hw * hw)2096 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2097 {
2098 struct mwl8k_priv *priv = hw->priv;
2099
2100 if (!--priv->fw_mutex_depth) {
2101 if (!priv->hw_restart_in_progress)
2102 ieee80211_wake_queues(hw);
2103
2104 priv->fw_mutex_owner = NULL;
2105 mutex_unlock(&priv->fw_mutex);
2106 }
2107 }
2108
2109
2110 /*
2111 * Command processing.
2112 */
2113
2114 /* Timeout firmware commands after 10s */
2115 #define MWL8K_CMD_TIMEOUT_MS 10000
2116
mwl8k_post_cmd(struct ieee80211_hw * hw,struct mwl8k_cmd_pkt * cmd)2117 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2118 {
2119 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2120 struct mwl8k_priv *priv = hw->priv;
2121 void __iomem *regs = priv->regs;
2122 dma_addr_t dma_addr;
2123 unsigned int dma_size;
2124 int rc;
2125 unsigned long timeout = 0;
2126 u8 buf[32];
2127
2128 cmd->result = (__force __le16) 0xffff;
2129 dma_size = le16_to_cpu(cmd->length);
2130 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2131 PCI_DMA_BIDIRECTIONAL);
2132 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2133 return -ENOMEM;
2134
2135 rc = mwl8k_fw_lock(hw);
2136 if (rc) {
2137 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2138 PCI_DMA_BIDIRECTIONAL);
2139 return rc;
2140 }
2141
2142 priv->hostcmd_wait = &cmd_wait;
2143 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2144 iowrite32(MWL8K_H2A_INT_DOORBELL,
2145 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2146 iowrite32(MWL8K_H2A_INT_DUMMY,
2147 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2148
2149 timeout = wait_for_completion_timeout(&cmd_wait,
2150 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2151
2152 priv->hostcmd_wait = NULL;
2153
2154 mwl8k_fw_unlock(hw);
2155
2156 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2157 PCI_DMA_BIDIRECTIONAL);
2158
2159 if (!timeout) {
2160 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2161 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2162 MWL8K_CMD_TIMEOUT_MS);
2163 rc = -ETIMEDOUT;
2164 } else {
2165 int ms;
2166
2167 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2168
2169 rc = cmd->result ? -EINVAL : 0;
2170 if (rc)
2171 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2172 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2173 le16_to_cpu(cmd->result));
2174 else if (ms > 2000)
2175 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2176 mwl8k_cmd_name(cmd->code,
2177 buf, sizeof(buf)),
2178 ms);
2179 }
2180
2181 return rc;
2182 }
2183
mwl8k_post_pervif_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct mwl8k_cmd_pkt * cmd)2184 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2185 struct ieee80211_vif *vif,
2186 struct mwl8k_cmd_pkt *cmd)
2187 {
2188 if (vif != NULL)
2189 cmd->macid = MWL8K_VIF(vif)->macid;
2190 return mwl8k_post_cmd(hw, cmd);
2191 }
2192
2193 /*
2194 * Setup code shared between STA and AP firmware images.
2195 */
mwl8k_setup_2ghz_band(struct ieee80211_hw * hw)2196 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2197 {
2198 struct mwl8k_priv *priv = hw->priv;
2199
2200 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2201 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2202
2203 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2204 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2205
2206 priv->band_24.band = IEEE80211_BAND_2GHZ;
2207 priv->band_24.channels = priv->channels_24;
2208 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2209 priv->band_24.bitrates = priv->rates_24;
2210 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2211
2212 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2213 }
2214
mwl8k_setup_5ghz_band(struct ieee80211_hw * hw)2215 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2216 {
2217 struct mwl8k_priv *priv = hw->priv;
2218
2219 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2220 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2221
2222 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2223 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2224
2225 priv->band_50.band = IEEE80211_BAND_5GHZ;
2226 priv->band_50.channels = priv->channels_50;
2227 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2228 priv->band_50.bitrates = priv->rates_50;
2229 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2230
2231 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2232 }
2233
2234 /*
2235 * CMD_GET_HW_SPEC (STA version).
2236 */
2237 struct mwl8k_cmd_get_hw_spec_sta {
2238 struct mwl8k_cmd_pkt header;
2239 __u8 hw_rev;
2240 __u8 host_interface;
2241 __le16 num_mcaddrs;
2242 __u8 perm_addr[ETH_ALEN];
2243 __le16 region_code;
2244 __le32 fw_rev;
2245 __le32 ps_cookie;
2246 __le32 caps;
2247 __u8 mcs_bitmap[16];
2248 __le32 rx_queue_ptr;
2249 __le32 num_tx_queues;
2250 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2251 __le32 caps2;
2252 __le32 num_tx_desc_per_queue;
2253 __le32 total_rxd;
2254 } __packed;
2255
2256 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2257 #define MWL8K_CAP_GREENFIELD 0x08000000
2258 #define MWL8K_CAP_AMPDU 0x04000000
2259 #define MWL8K_CAP_RX_STBC 0x01000000
2260 #define MWL8K_CAP_TX_STBC 0x00800000
2261 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2262 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2263 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2264 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2265 #define MWL8K_CAP_DELAY_BA 0x00003000
2266 #define MWL8K_CAP_MIMO 0x00000200
2267 #define MWL8K_CAP_40MHZ 0x00000100
2268 #define MWL8K_CAP_BAND_MASK 0x00000007
2269 #define MWL8K_CAP_5GHZ 0x00000004
2270 #define MWL8K_CAP_2GHZ4 0x00000001
2271
2272 static void
mwl8k_set_ht_caps(struct ieee80211_hw * hw,struct ieee80211_supported_band * band,u32 cap)2273 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2274 struct ieee80211_supported_band *band, u32 cap)
2275 {
2276 int rx_streams;
2277 int tx_streams;
2278
2279 band->ht_cap.ht_supported = 1;
2280
2281 if (cap & MWL8K_CAP_MAX_AMSDU)
2282 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2283 if (cap & MWL8K_CAP_GREENFIELD)
2284 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2285 if (cap & MWL8K_CAP_AMPDU) {
2286 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2287 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2288 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2289 }
2290 if (cap & MWL8K_CAP_RX_STBC)
2291 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2292 if (cap & MWL8K_CAP_TX_STBC)
2293 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2294 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2295 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2296 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2297 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2298 if (cap & MWL8K_CAP_DELAY_BA)
2299 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2300 if (cap & MWL8K_CAP_40MHZ)
2301 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2302
2303 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2304 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2305
2306 band->ht_cap.mcs.rx_mask[0] = 0xff;
2307 if (rx_streams >= 2)
2308 band->ht_cap.mcs.rx_mask[1] = 0xff;
2309 if (rx_streams >= 3)
2310 band->ht_cap.mcs.rx_mask[2] = 0xff;
2311 band->ht_cap.mcs.rx_mask[4] = 0x01;
2312 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2313
2314 if (rx_streams != tx_streams) {
2315 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2316 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2317 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2318 }
2319 }
2320
2321 static void
mwl8k_set_caps(struct ieee80211_hw * hw,u32 caps)2322 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2323 {
2324 struct mwl8k_priv *priv = hw->priv;
2325
2326 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2327 mwl8k_setup_2ghz_band(hw);
2328 if (caps & MWL8K_CAP_MIMO)
2329 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2330 }
2331
2332 if (caps & MWL8K_CAP_5GHZ) {
2333 mwl8k_setup_5ghz_band(hw);
2334 if (caps & MWL8K_CAP_MIMO)
2335 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2336 }
2337 }
2338
mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw * hw)2339 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2340 {
2341 struct mwl8k_priv *priv = hw->priv;
2342 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2343 int rc;
2344 int i;
2345
2346 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2347 if (cmd == NULL)
2348 return -ENOMEM;
2349
2350 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2351 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2352
2353 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2354 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2355 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2356 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2357 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2358 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2359 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2360 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2361
2362 rc = mwl8k_post_cmd(hw, &cmd->header);
2363
2364 if (!rc) {
2365 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2366 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2367 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2368 priv->hw_rev = cmd->hw_rev;
2369 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2370 priv->ap_macids_supported = 0x00000000;
2371 priv->sta_macids_supported = 0x00000001;
2372 }
2373
2374 kfree(cmd);
2375 return rc;
2376 }
2377
2378 /*
2379 * CMD_GET_HW_SPEC (AP version).
2380 */
2381 struct mwl8k_cmd_get_hw_spec_ap {
2382 struct mwl8k_cmd_pkt header;
2383 __u8 hw_rev;
2384 __u8 host_interface;
2385 __le16 num_wcb;
2386 __le16 num_mcaddrs;
2387 __u8 perm_addr[ETH_ALEN];
2388 __le16 region_code;
2389 __le16 num_antenna;
2390 __le32 fw_rev;
2391 __le32 wcbbase0;
2392 __le32 rxwrptr;
2393 __le32 rxrdptr;
2394 __le32 ps_cookie;
2395 __le32 wcbbase1;
2396 __le32 wcbbase2;
2397 __le32 wcbbase3;
2398 __le32 fw_api_version;
2399 __le32 caps;
2400 __le32 num_of_ampdu_queues;
2401 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2402 } __packed;
2403
mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw * hw)2404 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2405 {
2406 struct mwl8k_priv *priv = hw->priv;
2407 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2408 int rc, i;
2409 u32 api_version;
2410
2411 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2412 if (cmd == NULL)
2413 return -ENOMEM;
2414
2415 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2416 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2417
2418 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2419 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2420
2421 rc = mwl8k_post_cmd(hw, &cmd->header);
2422
2423 if (!rc) {
2424 int off;
2425
2426 api_version = le32_to_cpu(cmd->fw_api_version);
2427 if (priv->device_info->fw_api_ap != api_version) {
2428 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2429 " Expected %d got %d.\n", MWL8K_NAME,
2430 priv->device_info->part_name,
2431 priv->device_info->fw_api_ap,
2432 api_version);
2433 rc = -EINVAL;
2434 goto done;
2435 }
2436 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2437 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2438 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2439 priv->hw_rev = cmd->hw_rev;
2440 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2441 priv->ap_macids_supported = 0x000000ff;
2442 priv->sta_macids_supported = 0x00000000;
2443 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2444 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2445 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2446 " but we only support %d.\n",
2447 priv->num_ampdu_queues,
2448 MWL8K_MAX_AMPDU_QUEUES);
2449 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2450 }
2451 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2452 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2453
2454 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2455 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2456
2457 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2458 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2459 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2460 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2461
2462 for (i = 0; i < priv->num_ampdu_queues; i++)
2463 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2464 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2465 }
2466
2467 done:
2468 kfree(cmd);
2469 return rc;
2470 }
2471
2472 /*
2473 * CMD_SET_HW_SPEC.
2474 */
2475 struct mwl8k_cmd_set_hw_spec {
2476 struct mwl8k_cmd_pkt header;
2477 __u8 hw_rev;
2478 __u8 host_interface;
2479 __le16 num_mcaddrs;
2480 __u8 perm_addr[ETH_ALEN];
2481 __le16 region_code;
2482 __le32 fw_rev;
2483 __le32 ps_cookie;
2484 __le32 caps;
2485 __le32 rx_queue_ptr;
2486 __le32 num_tx_queues;
2487 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2488 __le32 flags;
2489 __le32 num_tx_desc_per_queue;
2490 __le32 total_rxd;
2491 } __packed;
2492
2493 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2494 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2495 * the packets that are queued for more than 500ms, will be dropped in the
2496 * hardware. This helps minimizing the issues caused due to head-of-line
2497 * blocking where a slow client can hog the bandwidth and affect traffic to a
2498 * faster client.
2499 */
2500 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2501 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2502 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2503 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2504 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2505
mwl8k_cmd_set_hw_spec(struct ieee80211_hw * hw)2506 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2507 {
2508 struct mwl8k_priv *priv = hw->priv;
2509 struct mwl8k_cmd_set_hw_spec *cmd;
2510 int rc;
2511 int i;
2512
2513 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2514 if (cmd == NULL)
2515 return -ENOMEM;
2516
2517 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2518 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2519
2520 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2521 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2522 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2523
2524 /*
2525 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2526 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2527 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2528 * priority is interpreted the right way in firmware.
2529 */
2530 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2531 int j = mwl8k_tx_queues(priv) - 1 - i;
2532 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2533 }
2534
2535 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2536 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2537 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2538 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2539 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2540 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2541 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2542
2543 rc = mwl8k_post_cmd(hw, &cmd->header);
2544 kfree(cmd);
2545
2546 return rc;
2547 }
2548
2549 /*
2550 * CMD_MAC_MULTICAST_ADR.
2551 */
2552 struct mwl8k_cmd_mac_multicast_adr {
2553 struct mwl8k_cmd_pkt header;
2554 __le16 action;
2555 __le16 numaddr;
2556 __u8 addr[0][ETH_ALEN];
2557 };
2558
2559 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2560 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2561 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2562 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2563
2564 static struct mwl8k_cmd_pkt *
__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw * hw,int allmulti,struct netdev_hw_addr_list * mc_list)2565 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2566 struct netdev_hw_addr_list *mc_list)
2567 {
2568 struct mwl8k_priv *priv = hw->priv;
2569 struct mwl8k_cmd_mac_multicast_adr *cmd;
2570 int size;
2571 int mc_count = 0;
2572
2573 if (mc_list)
2574 mc_count = netdev_hw_addr_list_count(mc_list);
2575
2576 if (allmulti || mc_count > priv->num_mcaddrs) {
2577 allmulti = 1;
2578 mc_count = 0;
2579 }
2580
2581 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2582
2583 cmd = kzalloc(size, GFP_ATOMIC);
2584 if (cmd == NULL)
2585 return NULL;
2586
2587 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2588 cmd->header.length = cpu_to_le16(size);
2589 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2590 MWL8K_ENABLE_RX_BROADCAST);
2591
2592 if (allmulti) {
2593 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2594 } else if (mc_count) {
2595 struct netdev_hw_addr *ha;
2596 int i = 0;
2597
2598 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2599 cmd->numaddr = cpu_to_le16(mc_count);
2600 netdev_hw_addr_list_for_each(ha, mc_list) {
2601 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2602 }
2603 }
2604
2605 return &cmd->header;
2606 }
2607
2608 /*
2609 * CMD_GET_STAT.
2610 */
2611 struct mwl8k_cmd_get_stat {
2612 struct mwl8k_cmd_pkt header;
2613 __le32 stats[64];
2614 } __packed;
2615
2616 #define MWL8K_STAT_ACK_FAILURE 9
2617 #define MWL8K_STAT_RTS_FAILURE 12
2618 #define MWL8K_STAT_FCS_ERROR 24
2619 #define MWL8K_STAT_RTS_SUCCESS 11
2620
mwl8k_cmd_get_stat(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)2621 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2622 struct ieee80211_low_level_stats *stats)
2623 {
2624 struct mwl8k_cmd_get_stat *cmd;
2625 int rc;
2626
2627 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2628 if (cmd == NULL)
2629 return -ENOMEM;
2630
2631 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2632 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2633
2634 rc = mwl8k_post_cmd(hw, &cmd->header);
2635 if (!rc) {
2636 stats->dot11ACKFailureCount =
2637 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2638 stats->dot11RTSFailureCount =
2639 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2640 stats->dot11FCSErrorCount =
2641 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2642 stats->dot11RTSSuccessCount =
2643 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2644 }
2645 kfree(cmd);
2646
2647 return rc;
2648 }
2649
2650 /*
2651 * CMD_RADIO_CONTROL.
2652 */
2653 struct mwl8k_cmd_radio_control {
2654 struct mwl8k_cmd_pkt header;
2655 __le16 action;
2656 __le16 control;
2657 __le16 radio_on;
2658 } __packed;
2659
2660 static int
mwl8k_cmd_radio_control(struct ieee80211_hw * hw,bool enable,bool force)2661 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2662 {
2663 struct mwl8k_priv *priv = hw->priv;
2664 struct mwl8k_cmd_radio_control *cmd;
2665 int rc;
2666
2667 if (enable == priv->radio_on && !force)
2668 return 0;
2669
2670 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2671 if (cmd == NULL)
2672 return -ENOMEM;
2673
2674 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2675 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2676 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2677 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2678 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2679
2680 rc = mwl8k_post_cmd(hw, &cmd->header);
2681 kfree(cmd);
2682
2683 if (!rc)
2684 priv->radio_on = enable;
2685
2686 return rc;
2687 }
2688
mwl8k_cmd_radio_disable(struct ieee80211_hw * hw)2689 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2690 {
2691 return mwl8k_cmd_radio_control(hw, 0, 0);
2692 }
2693
mwl8k_cmd_radio_enable(struct ieee80211_hw * hw)2694 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2695 {
2696 return mwl8k_cmd_radio_control(hw, 1, 0);
2697 }
2698
2699 static int
mwl8k_set_radio_preamble(struct ieee80211_hw * hw,bool short_preamble)2700 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2701 {
2702 struct mwl8k_priv *priv = hw->priv;
2703
2704 priv->radio_short_preamble = short_preamble;
2705
2706 return mwl8k_cmd_radio_control(hw, 1, 1);
2707 }
2708
2709 /*
2710 * CMD_RF_TX_POWER.
2711 */
2712 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2713
2714 struct mwl8k_cmd_rf_tx_power {
2715 struct mwl8k_cmd_pkt header;
2716 __le16 action;
2717 __le16 support_level;
2718 __le16 current_level;
2719 __le16 reserved;
2720 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2721 } __packed;
2722
mwl8k_cmd_rf_tx_power(struct ieee80211_hw * hw,int dBm)2723 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2724 {
2725 struct mwl8k_cmd_rf_tx_power *cmd;
2726 int rc;
2727
2728 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2729 if (cmd == NULL)
2730 return -ENOMEM;
2731
2732 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2733 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2734 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2735 cmd->support_level = cpu_to_le16(dBm);
2736
2737 rc = mwl8k_post_cmd(hw, &cmd->header);
2738 kfree(cmd);
2739
2740 return rc;
2741 }
2742
2743 /*
2744 * CMD_TX_POWER.
2745 */
2746 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2747
2748 struct mwl8k_cmd_tx_power {
2749 struct mwl8k_cmd_pkt header;
2750 __le16 action;
2751 __le16 band;
2752 __le16 channel;
2753 __le16 bw;
2754 __le16 sub_ch;
2755 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2756 } __packed;
2757
mwl8k_cmd_tx_power(struct ieee80211_hw * hw,struct ieee80211_conf * conf,unsigned short pwr)2758 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2759 struct ieee80211_conf *conf,
2760 unsigned short pwr)
2761 {
2762 struct ieee80211_channel *channel = conf->channel;
2763 struct mwl8k_cmd_tx_power *cmd;
2764 int rc;
2765 int i;
2766
2767 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2768 if (cmd == NULL)
2769 return -ENOMEM;
2770
2771 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2772 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2773 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2774
2775 if (channel->band == IEEE80211_BAND_2GHZ)
2776 cmd->band = cpu_to_le16(0x1);
2777 else if (channel->band == IEEE80211_BAND_5GHZ)
2778 cmd->band = cpu_to_le16(0x4);
2779
2780 cmd->channel = cpu_to_le16(channel->hw_value);
2781
2782 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2783 conf->channel_type == NL80211_CHAN_HT20) {
2784 cmd->bw = cpu_to_le16(0x2);
2785 } else {
2786 cmd->bw = cpu_to_le16(0x4);
2787 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2788 cmd->sub_ch = cpu_to_le16(0x3);
2789 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2790 cmd->sub_ch = cpu_to_le16(0x1);
2791 }
2792
2793 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2794 cmd->power_level_list[i] = cpu_to_le16(pwr);
2795
2796 rc = mwl8k_post_cmd(hw, &cmd->header);
2797 kfree(cmd);
2798
2799 return rc;
2800 }
2801
2802 /*
2803 * CMD_RF_ANTENNA.
2804 */
2805 struct mwl8k_cmd_rf_antenna {
2806 struct mwl8k_cmd_pkt header;
2807 __le16 antenna;
2808 __le16 mode;
2809 } __packed;
2810
2811 #define MWL8K_RF_ANTENNA_RX 1
2812 #define MWL8K_RF_ANTENNA_TX 2
2813
2814 static int
mwl8k_cmd_rf_antenna(struct ieee80211_hw * hw,int antenna,int mask)2815 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2816 {
2817 struct mwl8k_cmd_rf_antenna *cmd;
2818 int rc;
2819
2820 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2821 if (cmd == NULL)
2822 return -ENOMEM;
2823
2824 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2825 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2826 cmd->antenna = cpu_to_le16(antenna);
2827 cmd->mode = cpu_to_le16(mask);
2828
2829 rc = mwl8k_post_cmd(hw, &cmd->header);
2830 kfree(cmd);
2831
2832 return rc;
2833 }
2834
2835 /*
2836 * CMD_SET_BEACON.
2837 */
2838 struct mwl8k_cmd_set_beacon {
2839 struct mwl8k_cmd_pkt header;
2840 __le16 beacon_len;
2841 __u8 beacon[0];
2842 };
2843
mwl8k_cmd_set_beacon(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u8 * beacon,int len)2844 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2845 struct ieee80211_vif *vif, u8 *beacon, int len)
2846 {
2847 struct mwl8k_cmd_set_beacon *cmd;
2848 int rc;
2849
2850 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2851 if (cmd == NULL)
2852 return -ENOMEM;
2853
2854 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2855 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2856 cmd->beacon_len = cpu_to_le16(len);
2857 memcpy(cmd->beacon, beacon, len);
2858
2859 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2860 kfree(cmd);
2861
2862 return rc;
2863 }
2864
2865 /*
2866 * CMD_SET_PRE_SCAN.
2867 */
2868 struct mwl8k_cmd_set_pre_scan {
2869 struct mwl8k_cmd_pkt header;
2870 } __packed;
2871
mwl8k_cmd_set_pre_scan(struct ieee80211_hw * hw)2872 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2873 {
2874 struct mwl8k_cmd_set_pre_scan *cmd;
2875 int rc;
2876
2877 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2878 if (cmd == NULL)
2879 return -ENOMEM;
2880
2881 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2882 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2883
2884 rc = mwl8k_post_cmd(hw, &cmd->header);
2885 kfree(cmd);
2886
2887 return rc;
2888 }
2889
2890 /*
2891 * CMD_SET_POST_SCAN.
2892 */
2893 struct mwl8k_cmd_set_post_scan {
2894 struct mwl8k_cmd_pkt header;
2895 __le32 isibss;
2896 __u8 bssid[ETH_ALEN];
2897 } __packed;
2898
2899 static int
mwl8k_cmd_set_post_scan(struct ieee80211_hw * hw,const __u8 * mac)2900 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2901 {
2902 struct mwl8k_cmd_set_post_scan *cmd;
2903 int rc;
2904
2905 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2906 if (cmd == NULL)
2907 return -ENOMEM;
2908
2909 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2910 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2911 cmd->isibss = 0;
2912 memcpy(cmd->bssid, mac, ETH_ALEN);
2913
2914 rc = mwl8k_post_cmd(hw, &cmd->header);
2915 kfree(cmd);
2916
2917 return rc;
2918 }
2919
2920 /*
2921 * CMD_SET_RF_CHANNEL.
2922 */
2923 struct mwl8k_cmd_set_rf_channel {
2924 struct mwl8k_cmd_pkt header;
2925 __le16 action;
2926 __u8 current_channel;
2927 __le32 channel_flags;
2928 } __packed;
2929
mwl8k_cmd_set_rf_channel(struct ieee80211_hw * hw,struct ieee80211_conf * conf)2930 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2931 struct ieee80211_conf *conf)
2932 {
2933 struct ieee80211_channel *channel = conf->channel;
2934 struct mwl8k_cmd_set_rf_channel *cmd;
2935 int rc;
2936
2937 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2938 if (cmd == NULL)
2939 return -ENOMEM;
2940
2941 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2942 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2943 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2944 cmd->current_channel = channel->hw_value;
2945
2946 if (channel->band == IEEE80211_BAND_2GHZ)
2947 cmd->channel_flags |= cpu_to_le32(0x00000001);
2948 else if (channel->band == IEEE80211_BAND_5GHZ)
2949 cmd->channel_flags |= cpu_to_le32(0x00000004);
2950
2951 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2952 conf->channel_type == NL80211_CHAN_HT20)
2953 cmd->channel_flags |= cpu_to_le32(0x00000080);
2954 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2955 cmd->channel_flags |= cpu_to_le32(0x000001900);
2956 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2957 cmd->channel_flags |= cpu_to_le32(0x000000900);
2958
2959 rc = mwl8k_post_cmd(hw, &cmd->header);
2960 kfree(cmd);
2961
2962 return rc;
2963 }
2964
2965 /*
2966 * CMD_SET_AID.
2967 */
2968 #define MWL8K_FRAME_PROT_DISABLED 0x00
2969 #define MWL8K_FRAME_PROT_11G 0x07
2970 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2971 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2972
2973 struct mwl8k_cmd_update_set_aid {
2974 struct mwl8k_cmd_pkt header;
2975 __le16 aid;
2976
2977 /* AP's MAC address (BSSID) */
2978 __u8 bssid[ETH_ALEN];
2979 __le16 protection_mode;
2980 __u8 supp_rates[14];
2981 } __packed;
2982
legacy_rate_mask_to_array(u8 * rates,u32 mask)2983 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2984 {
2985 int i;
2986 int j;
2987
2988 /*
2989 * Clear nonstandard rates 4 and 13.
2990 */
2991 mask &= 0x1fef;
2992
2993 for (i = 0, j = 0; i < 14; i++) {
2994 if (mask & (1 << i))
2995 rates[j++] = mwl8k_rates_24[i].hw_value;
2996 }
2997 }
2998
2999 static int
mwl8k_cmd_set_aid(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 legacy_rate_mask)3000 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3001 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3002 {
3003 struct mwl8k_cmd_update_set_aid *cmd;
3004 u16 prot_mode;
3005 int rc;
3006
3007 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3008 if (cmd == NULL)
3009 return -ENOMEM;
3010
3011 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3012 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3013 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3014 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3015
3016 if (vif->bss_conf.use_cts_prot) {
3017 prot_mode = MWL8K_FRAME_PROT_11G;
3018 } else {
3019 switch (vif->bss_conf.ht_operation_mode &
3020 IEEE80211_HT_OP_MODE_PROTECTION) {
3021 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3022 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3023 break;
3024 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3025 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3026 break;
3027 default:
3028 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3029 break;
3030 }
3031 }
3032 cmd->protection_mode = cpu_to_le16(prot_mode);
3033
3034 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3035
3036 rc = mwl8k_post_cmd(hw, &cmd->header);
3037 kfree(cmd);
3038
3039 return rc;
3040 }
3041
3042 /*
3043 * CMD_SET_RATE.
3044 */
3045 struct mwl8k_cmd_set_rate {
3046 struct mwl8k_cmd_pkt header;
3047 __u8 legacy_rates[14];
3048
3049 /* Bitmap for supported MCS codes. */
3050 __u8 mcs_set[16];
3051 __u8 reserved[16];
3052 } __packed;
3053
3054 static int
mwl8k_cmd_set_rate(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 legacy_rate_mask,u8 * mcs_rates)3055 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3056 u32 legacy_rate_mask, u8 *mcs_rates)
3057 {
3058 struct mwl8k_cmd_set_rate *cmd;
3059 int rc;
3060
3061 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3062 if (cmd == NULL)
3063 return -ENOMEM;
3064
3065 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3066 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3067 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3068 memcpy(cmd->mcs_set, mcs_rates, 16);
3069
3070 rc = mwl8k_post_cmd(hw, &cmd->header);
3071 kfree(cmd);
3072
3073 return rc;
3074 }
3075
3076 /*
3077 * CMD_FINALIZE_JOIN.
3078 */
3079 #define MWL8K_FJ_BEACON_MAXLEN 128
3080
3081 struct mwl8k_cmd_finalize_join {
3082 struct mwl8k_cmd_pkt header;
3083 __le32 sleep_interval; /* Number of beacon periods to sleep */
3084 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3085 } __packed;
3086
mwl8k_cmd_finalize_join(struct ieee80211_hw * hw,void * frame,int framelen,int dtim)3087 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3088 int framelen, int dtim)
3089 {
3090 struct mwl8k_cmd_finalize_join *cmd;
3091 struct ieee80211_mgmt *payload = frame;
3092 int payload_len;
3093 int rc;
3094
3095 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3096 if (cmd == NULL)
3097 return -ENOMEM;
3098
3099 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3100 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3101 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3102
3103 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3104 if (payload_len < 0)
3105 payload_len = 0;
3106 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3107 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3108
3109 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3110
3111 rc = mwl8k_post_cmd(hw, &cmd->header);
3112 kfree(cmd);
3113
3114 return rc;
3115 }
3116
3117 /*
3118 * CMD_SET_RTS_THRESHOLD.
3119 */
3120 struct mwl8k_cmd_set_rts_threshold {
3121 struct mwl8k_cmd_pkt header;
3122 __le16 action;
3123 __le16 threshold;
3124 } __packed;
3125
3126 static int
mwl8k_cmd_set_rts_threshold(struct ieee80211_hw * hw,int rts_thresh)3127 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3128 {
3129 struct mwl8k_cmd_set_rts_threshold *cmd;
3130 int rc;
3131
3132 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3133 if (cmd == NULL)
3134 return -ENOMEM;
3135
3136 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3137 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3138 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3139 cmd->threshold = cpu_to_le16(rts_thresh);
3140
3141 rc = mwl8k_post_cmd(hw, &cmd->header);
3142 kfree(cmd);
3143
3144 return rc;
3145 }
3146
3147 /*
3148 * CMD_SET_SLOT.
3149 */
3150 struct mwl8k_cmd_set_slot {
3151 struct mwl8k_cmd_pkt header;
3152 __le16 action;
3153 __u8 short_slot;
3154 } __packed;
3155
mwl8k_cmd_set_slot(struct ieee80211_hw * hw,bool short_slot_time)3156 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3157 {
3158 struct mwl8k_cmd_set_slot *cmd;
3159 int rc;
3160
3161 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3162 if (cmd == NULL)
3163 return -ENOMEM;
3164
3165 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3166 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3167 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3168 cmd->short_slot = short_slot_time;
3169
3170 rc = mwl8k_post_cmd(hw, &cmd->header);
3171 kfree(cmd);
3172
3173 return rc;
3174 }
3175
3176 /*
3177 * CMD_SET_EDCA_PARAMS.
3178 */
3179 struct mwl8k_cmd_set_edca_params {
3180 struct mwl8k_cmd_pkt header;
3181
3182 /* See MWL8K_SET_EDCA_XXX below */
3183 __le16 action;
3184
3185 /* TX opportunity in units of 32 us */
3186 __le16 txop;
3187
3188 union {
3189 struct {
3190 /* Log exponent of max contention period: 0...15 */
3191 __le32 log_cw_max;
3192
3193 /* Log exponent of min contention period: 0...15 */
3194 __le32 log_cw_min;
3195
3196 /* Adaptive interframe spacing in units of 32us */
3197 __u8 aifs;
3198
3199 /* TX queue to configure */
3200 __u8 txq;
3201 } ap;
3202 struct {
3203 /* Log exponent of max contention period: 0...15 */
3204 __u8 log_cw_max;
3205
3206 /* Log exponent of min contention period: 0...15 */
3207 __u8 log_cw_min;
3208
3209 /* Adaptive interframe spacing in units of 32us */
3210 __u8 aifs;
3211
3212 /* TX queue to configure */
3213 __u8 txq;
3214 } sta;
3215 };
3216 } __packed;
3217
3218 #define MWL8K_SET_EDCA_CW 0x01
3219 #define MWL8K_SET_EDCA_TXOP 0x02
3220 #define MWL8K_SET_EDCA_AIFS 0x04
3221
3222 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3223 MWL8K_SET_EDCA_TXOP | \
3224 MWL8K_SET_EDCA_AIFS)
3225
3226 static int
mwl8k_cmd_set_edca_params(struct ieee80211_hw * hw,__u8 qnum,__u16 cw_min,__u16 cw_max,__u8 aifs,__u16 txop)3227 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3228 __u16 cw_min, __u16 cw_max,
3229 __u8 aifs, __u16 txop)
3230 {
3231 struct mwl8k_priv *priv = hw->priv;
3232 struct mwl8k_cmd_set_edca_params *cmd;
3233 int rc;
3234
3235 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3236 if (cmd == NULL)
3237 return -ENOMEM;
3238
3239 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3240 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3241 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3242 cmd->txop = cpu_to_le16(txop);
3243 if (priv->ap_fw) {
3244 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3245 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3246 cmd->ap.aifs = aifs;
3247 cmd->ap.txq = qnum;
3248 } else {
3249 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3250 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3251 cmd->sta.aifs = aifs;
3252 cmd->sta.txq = qnum;
3253 }
3254
3255 rc = mwl8k_post_cmd(hw, &cmd->header);
3256 kfree(cmd);
3257
3258 return rc;
3259 }
3260
3261 /*
3262 * CMD_SET_WMM_MODE.
3263 */
3264 struct mwl8k_cmd_set_wmm_mode {
3265 struct mwl8k_cmd_pkt header;
3266 __le16 action;
3267 } __packed;
3268
mwl8k_cmd_set_wmm_mode(struct ieee80211_hw * hw,bool enable)3269 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3270 {
3271 struct mwl8k_priv *priv = hw->priv;
3272 struct mwl8k_cmd_set_wmm_mode *cmd;
3273 int rc;
3274
3275 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3276 if (cmd == NULL)
3277 return -ENOMEM;
3278
3279 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3280 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3281 cmd->action = cpu_to_le16(!!enable);
3282
3283 rc = mwl8k_post_cmd(hw, &cmd->header);
3284 kfree(cmd);
3285
3286 if (!rc)
3287 priv->wmm_enabled = enable;
3288
3289 return rc;
3290 }
3291
3292 /*
3293 * CMD_MIMO_CONFIG.
3294 */
3295 struct mwl8k_cmd_mimo_config {
3296 struct mwl8k_cmd_pkt header;
3297 __le32 action;
3298 __u8 rx_antenna_map;
3299 __u8 tx_antenna_map;
3300 } __packed;
3301
mwl8k_cmd_mimo_config(struct ieee80211_hw * hw,__u8 rx,__u8 tx)3302 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3303 {
3304 struct mwl8k_cmd_mimo_config *cmd;
3305 int rc;
3306
3307 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3308 if (cmd == NULL)
3309 return -ENOMEM;
3310
3311 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3312 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3313 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3314 cmd->rx_antenna_map = rx;
3315 cmd->tx_antenna_map = tx;
3316
3317 rc = mwl8k_post_cmd(hw, &cmd->header);
3318 kfree(cmd);
3319
3320 return rc;
3321 }
3322
3323 /*
3324 * CMD_USE_FIXED_RATE (STA version).
3325 */
3326 struct mwl8k_cmd_use_fixed_rate_sta {
3327 struct mwl8k_cmd_pkt header;
3328 __le32 action;
3329 __le32 allow_rate_drop;
3330 __le32 num_rates;
3331 struct {
3332 __le32 is_ht_rate;
3333 __le32 enable_retry;
3334 __le32 rate;
3335 __le32 retry_count;
3336 } rate_entry[8];
3337 __le32 rate_type;
3338 __le32 reserved1;
3339 __le32 reserved2;
3340 } __packed;
3341
3342 #define MWL8K_USE_AUTO_RATE 0x0002
3343 #define MWL8K_UCAST_RATE 0
3344
mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw * hw)3345 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3346 {
3347 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3348 int rc;
3349
3350 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3351 if (cmd == NULL)
3352 return -ENOMEM;
3353
3354 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3355 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3356 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3357 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3358
3359 rc = mwl8k_post_cmd(hw, &cmd->header);
3360 kfree(cmd);
3361
3362 return rc;
3363 }
3364
3365 /*
3366 * CMD_USE_FIXED_RATE (AP version).
3367 */
3368 struct mwl8k_cmd_use_fixed_rate_ap {
3369 struct mwl8k_cmd_pkt header;
3370 __le32 action;
3371 __le32 allow_rate_drop;
3372 __le32 num_rates;
3373 struct mwl8k_rate_entry_ap {
3374 __le32 is_ht_rate;
3375 __le32 enable_retry;
3376 __le32 rate;
3377 __le32 retry_count;
3378 } rate_entry[4];
3379 u8 multicast_rate;
3380 u8 multicast_rate_type;
3381 u8 management_rate;
3382 } __packed;
3383
3384 static int
mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw * hw,int mcast,int mgmt)3385 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3386 {
3387 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3388 int rc;
3389
3390 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3391 if (cmd == NULL)
3392 return -ENOMEM;
3393
3394 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3395 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3396 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3397 cmd->multicast_rate = mcast;
3398 cmd->management_rate = mgmt;
3399
3400 rc = mwl8k_post_cmd(hw, &cmd->header);
3401 kfree(cmd);
3402
3403 return rc;
3404 }
3405
3406 /*
3407 * CMD_ENABLE_SNIFFER.
3408 */
3409 struct mwl8k_cmd_enable_sniffer {
3410 struct mwl8k_cmd_pkt header;
3411 __le32 action;
3412 } __packed;
3413
mwl8k_cmd_enable_sniffer(struct ieee80211_hw * hw,bool enable)3414 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3415 {
3416 struct mwl8k_cmd_enable_sniffer *cmd;
3417 int rc;
3418
3419 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3420 if (cmd == NULL)
3421 return -ENOMEM;
3422
3423 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3424 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3425 cmd->action = cpu_to_le32(!!enable);
3426
3427 rc = mwl8k_post_cmd(hw, &cmd->header);
3428 kfree(cmd);
3429
3430 return rc;
3431 }
3432
3433 /*
3434 * CMD_SET_MAC_ADDR.
3435 */
3436 struct mwl8k_cmd_set_mac_addr {
3437 struct mwl8k_cmd_pkt header;
3438 union {
3439 struct {
3440 __le16 mac_type;
3441 __u8 mac_addr[ETH_ALEN];
3442 } mbss;
3443 __u8 mac_addr[ETH_ALEN];
3444 };
3445 } __packed;
3446
3447 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3448 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3449 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3450 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3451
mwl8k_cmd_set_mac_addr(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u8 * mac)3452 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3453 struct ieee80211_vif *vif, u8 *mac)
3454 {
3455 struct mwl8k_priv *priv = hw->priv;
3456 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3457 struct mwl8k_cmd_set_mac_addr *cmd;
3458 int mac_type;
3459 int rc;
3460
3461 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3462 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3463 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3464 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3465 else
3466 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3467 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3468 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3469 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3470 else
3471 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3472 }
3473
3474 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3475 if (cmd == NULL)
3476 return -ENOMEM;
3477
3478 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3479 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3480 if (priv->ap_fw) {
3481 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3482 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3483 } else {
3484 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3485 }
3486
3487 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3488 kfree(cmd);
3489
3490 return rc;
3491 }
3492
3493 /*
3494 * CMD_SET_RATEADAPT_MODE.
3495 */
3496 struct mwl8k_cmd_set_rate_adapt_mode {
3497 struct mwl8k_cmd_pkt header;
3498 __le16 action;
3499 __le16 mode;
3500 } __packed;
3501
mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw * hw,__u16 mode)3502 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3503 {
3504 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3505 int rc;
3506
3507 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3508 if (cmd == NULL)
3509 return -ENOMEM;
3510
3511 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3512 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3513 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3514 cmd->mode = cpu_to_le16(mode);
3515
3516 rc = mwl8k_post_cmd(hw, &cmd->header);
3517 kfree(cmd);
3518
3519 return rc;
3520 }
3521
3522 /*
3523 * CMD_GET_WATCHDOG_BITMAP.
3524 */
3525 struct mwl8k_cmd_get_watchdog_bitmap {
3526 struct mwl8k_cmd_pkt header;
3527 u8 bitmap;
3528 } __packed;
3529
mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw * hw,u8 * bitmap)3530 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3531 {
3532 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3533 int rc;
3534
3535 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3536 if (cmd == NULL)
3537 return -ENOMEM;
3538
3539 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3540 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3541
3542 rc = mwl8k_post_cmd(hw, &cmd->header);
3543 if (!rc)
3544 *bitmap = cmd->bitmap;
3545
3546 kfree(cmd);
3547
3548 return rc;
3549 }
3550
3551 #define INVALID_BA 0xAA
mwl8k_watchdog_ba_events(struct work_struct * work)3552 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3553 {
3554 int rc;
3555 u8 bitmap = 0, stream_index;
3556 struct mwl8k_ampdu_stream *streams;
3557 struct mwl8k_priv *priv =
3558 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3559
3560 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3561 if (rc)
3562 return;
3563
3564 if (bitmap == INVALID_BA)
3565 return;
3566
3567 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3568 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3569
3570 BUG_ON(stream_index >= priv->num_ampdu_queues);
3571
3572 streams = &priv->ampdu[stream_index];
3573
3574 if (streams->state == AMPDU_STREAM_ACTIVE)
3575 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3576
3577 return;
3578 }
3579
3580
3581 /*
3582 * CMD_BSS_START.
3583 */
3584 struct mwl8k_cmd_bss_start {
3585 struct mwl8k_cmd_pkt header;
3586 __le32 enable;
3587 } __packed;
3588
mwl8k_cmd_bss_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int enable)3589 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3590 struct ieee80211_vif *vif, int enable)
3591 {
3592 struct mwl8k_cmd_bss_start *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_BSS_START);
3600 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3601 cmd->enable = cpu_to_le32(enable);
3602
3603 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3604 kfree(cmd);
3605
3606 return rc;
3607 }
3608
3609 /*
3610 * CMD_BASTREAM.
3611 */
3612
3613 /*
3614 * UPSTREAM is tx direction
3615 */
3616 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3617 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3618
3619 enum ba_stream_action_type {
3620 MWL8K_BA_CREATE,
3621 MWL8K_BA_UPDATE,
3622 MWL8K_BA_DESTROY,
3623 MWL8K_BA_FLUSH,
3624 MWL8K_BA_CHECK,
3625 };
3626
3627
3628 struct mwl8k_create_ba_stream {
3629 __le32 flags;
3630 __le32 idle_thrs;
3631 __le32 bar_thrs;
3632 __le32 window_size;
3633 u8 peer_mac_addr[6];
3634 u8 dialog_token;
3635 u8 tid;
3636 u8 queue_id;
3637 u8 param_info;
3638 __le32 ba_context;
3639 u8 reset_seq_no_flag;
3640 __le16 curr_seq_no;
3641 u8 sta_src_mac_addr[6];
3642 } __packed;
3643
3644 struct mwl8k_destroy_ba_stream {
3645 __le32 flags;
3646 __le32 ba_context;
3647 } __packed;
3648
3649 struct mwl8k_cmd_bastream {
3650 struct mwl8k_cmd_pkt header;
3651 __le32 action;
3652 union {
3653 struct mwl8k_create_ba_stream create_params;
3654 struct mwl8k_destroy_ba_stream destroy_params;
3655 };
3656 } __packed;
3657
3658 static int
mwl8k_check_ba(struct ieee80211_hw * hw,struct mwl8k_ampdu_stream * stream)3659 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3660 {
3661 struct mwl8k_cmd_bastream *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_BASTREAM);
3669 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3670
3671 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3672
3673 cmd->create_params.queue_id = stream->idx;
3674 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3675 ETH_ALEN);
3676 cmd->create_params.tid = stream->tid;
3677
3678 cmd->create_params.flags =
3679 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3680 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3681
3682 rc = mwl8k_post_cmd(hw, &cmd->header);
3683
3684 kfree(cmd);
3685
3686 return rc;
3687 }
3688
3689 static int
mwl8k_create_ba(struct ieee80211_hw * hw,struct mwl8k_ampdu_stream * stream,u8 buf_size)3690 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3691 u8 buf_size)
3692 {
3693 struct mwl8k_cmd_bastream *cmd;
3694 int rc;
3695
3696 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3697 if (cmd == NULL)
3698 return -ENOMEM;
3699
3700
3701 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3702 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3703
3704 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3705
3706 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3707 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3708 cmd->create_params.queue_id = stream->idx;
3709
3710 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3711 cmd->create_params.tid = stream->tid;
3712 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3713 cmd->create_params.reset_seq_no_flag = 1;
3714
3715 cmd->create_params.param_info =
3716 (stream->sta->ht_cap.ampdu_factor &
3717 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3718 ((stream->sta->ht_cap.ampdu_density << 2) &
3719 IEEE80211_HT_AMPDU_PARM_DENSITY);
3720
3721 cmd->create_params.flags =
3722 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3723 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3724
3725 rc = mwl8k_post_cmd(hw, &cmd->header);
3726
3727 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3728 stream->sta->addr, stream->tid);
3729 kfree(cmd);
3730
3731 return rc;
3732 }
3733
mwl8k_destroy_ba(struct ieee80211_hw * hw,struct mwl8k_ampdu_stream * stream)3734 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3735 struct mwl8k_ampdu_stream *stream)
3736 {
3737 struct mwl8k_cmd_bastream *cmd;
3738
3739 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3740 if (cmd == NULL)
3741 return;
3742
3743 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3744 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3745 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3746
3747 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3748 mwl8k_post_cmd(hw, &cmd->header);
3749
3750 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3751
3752 kfree(cmd);
3753 }
3754
3755 /*
3756 * CMD_SET_NEW_STN.
3757 */
3758 struct mwl8k_cmd_set_new_stn {
3759 struct mwl8k_cmd_pkt header;
3760 __le16 aid;
3761 __u8 mac_addr[6];
3762 __le16 stn_id;
3763 __le16 action;
3764 __le16 rsvd;
3765 __le32 legacy_rates;
3766 __u8 ht_rates[4];
3767 __le16 cap_info;
3768 __le16 ht_capabilities_info;
3769 __u8 mac_ht_param_info;
3770 __u8 rev;
3771 __u8 control_channel;
3772 __u8 add_channel;
3773 __le16 op_mode;
3774 __le16 stbc;
3775 __u8 add_qos_info;
3776 __u8 is_qos_sta;
3777 __le32 fw_sta_ptr;
3778 } __packed;
3779
3780 #define MWL8K_STA_ACTION_ADD 0
3781 #define MWL8K_STA_ACTION_REMOVE 2
3782
mwl8k_cmd_set_new_stn_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)3783 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3784 struct ieee80211_vif *vif,
3785 struct ieee80211_sta *sta)
3786 {
3787 struct mwl8k_cmd_set_new_stn *cmd;
3788 u32 rates;
3789 int rc;
3790
3791 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3792 if (cmd == NULL)
3793 return -ENOMEM;
3794
3795 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3796 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3797 cmd->aid = cpu_to_le16(sta->aid);
3798 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3799 cmd->stn_id = cpu_to_le16(sta->aid);
3800 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3801 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3802 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3803 else
3804 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3805 cmd->legacy_rates = cpu_to_le32(rates);
3806 if (sta->ht_cap.ht_supported) {
3807 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3808 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3809 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3810 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3811 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3812 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3813 ((sta->ht_cap.ampdu_density & 7) << 2);
3814 cmd->is_qos_sta = 1;
3815 }
3816
3817 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3818 kfree(cmd);
3819
3820 return rc;
3821 }
3822
mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3823 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3824 struct ieee80211_vif *vif)
3825 {
3826 struct mwl8k_cmd_set_new_stn *cmd;
3827 int rc;
3828
3829 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3830 if (cmd == NULL)
3831 return -ENOMEM;
3832
3833 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3834 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3835 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3836
3837 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3838 kfree(cmd);
3839
3840 return rc;
3841 }
3842
mwl8k_cmd_set_new_stn_del(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u8 * addr)3843 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3844 struct ieee80211_vif *vif, u8 *addr)
3845 {
3846 struct mwl8k_cmd_set_new_stn *cmd;
3847 int rc;
3848
3849 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3850 if (cmd == NULL)
3851 return -ENOMEM;
3852
3853 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3854 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3855 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3856 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3857
3858 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3859 kfree(cmd);
3860
3861 return rc;
3862 }
3863
3864 /*
3865 * CMD_UPDATE_ENCRYPTION.
3866 */
3867
3868 #define MAX_ENCR_KEY_LENGTH 16
3869 #define MIC_KEY_LENGTH 8
3870
3871 struct mwl8k_cmd_update_encryption {
3872 struct mwl8k_cmd_pkt header;
3873
3874 __le32 action;
3875 __le32 reserved;
3876 __u8 mac_addr[6];
3877 __u8 encr_type;
3878
3879 } __packed;
3880
3881 struct mwl8k_cmd_set_key {
3882 struct mwl8k_cmd_pkt header;
3883
3884 __le32 action;
3885 __le32 reserved;
3886 __le16 length;
3887 __le16 key_type_id;
3888 __le32 key_info;
3889 __le32 key_id;
3890 __le16 key_len;
3891 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3892 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3893 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3894 __le16 tkip_rsc_low;
3895 __le32 tkip_rsc_high;
3896 __le16 tkip_tsc_low;
3897 __le32 tkip_tsc_high;
3898 __u8 mac_addr[6];
3899 } __packed;
3900
3901 enum {
3902 MWL8K_ENCR_ENABLE,
3903 MWL8K_ENCR_SET_KEY,
3904 MWL8K_ENCR_REMOVE_KEY,
3905 MWL8K_ENCR_SET_GROUP_KEY,
3906 };
3907
3908 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3909 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3910 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3911 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3912 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3913
3914 enum {
3915 MWL8K_ALG_WEP,
3916 MWL8K_ALG_TKIP,
3917 MWL8K_ALG_CCMP,
3918 };
3919
3920 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3921 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3922 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3923 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3924 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3925
mwl8k_cmd_update_encryption_enable(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u8 * addr,u8 encr_type)3926 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3927 struct ieee80211_vif *vif,
3928 u8 *addr,
3929 u8 encr_type)
3930 {
3931 struct mwl8k_cmd_update_encryption *cmd;
3932 int rc;
3933
3934 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3935 if (cmd == NULL)
3936 return -ENOMEM;
3937
3938 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3939 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3940 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3941 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3942 cmd->encr_type = encr_type;
3943
3944 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3945 kfree(cmd);
3946
3947 return rc;
3948 }
3949
mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key * cmd,u8 * addr,struct ieee80211_key_conf * key)3950 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3951 u8 *addr,
3952 struct ieee80211_key_conf *key)
3953 {
3954 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3955 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3956 cmd->length = cpu_to_le16(sizeof(*cmd) -
3957 offsetof(struct mwl8k_cmd_set_key, length));
3958 cmd->key_id = cpu_to_le32(key->keyidx);
3959 cmd->key_len = cpu_to_le16(key->keylen);
3960 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3961
3962 switch (key->cipher) {
3963 case WLAN_CIPHER_SUITE_WEP40:
3964 case WLAN_CIPHER_SUITE_WEP104:
3965 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3966 if (key->keyidx == 0)
3967 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3968
3969 break;
3970 case WLAN_CIPHER_SUITE_TKIP:
3971 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3972 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3973 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3974 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3975 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3976 | MWL8K_KEY_FLAG_TSC_VALID);
3977 break;
3978 case WLAN_CIPHER_SUITE_CCMP:
3979 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3980 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3981 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3982 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3983 break;
3984 default:
3985 return -ENOTSUPP;
3986 }
3987
3988 return 0;
3989 }
3990
mwl8k_cmd_encryption_set_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u8 * addr,struct ieee80211_key_conf * key)3991 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3992 struct ieee80211_vif *vif,
3993 u8 *addr,
3994 struct ieee80211_key_conf *key)
3995 {
3996 struct mwl8k_cmd_set_key *cmd;
3997 int rc;
3998 int keymlen;
3999 u32 action;
4000 u8 idx;
4001 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4002
4003 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4004 if (cmd == NULL)
4005 return -ENOMEM;
4006
4007 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4008 if (rc < 0)
4009 goto done;
4010
4011 idx = key->keyidx;
4012
4013 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4014 action = MWL8K_ENCR_SET_KEY;
4015 else
4016 action = MWL8K_ENCR_SET_GROUP_KEY;
4017
4018 switch (key->cipher) {
4019 case WLAN_CIPHER_SUITE_WEP40:
4020 case WLAN_CIPHER_SUITE_WEP104:
4021 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4022 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4023 sizeof(*key) + key->keylen);
4024 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4025 }
4026
4027 keymlen = key->keylen;
4028 action = MWL8K_ENCR_SET_KEY;
4029 break;
4030 case WLAN_CIPHER_SUITE_TKIP:
4031 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4032 break;
4033 case WLAN_CIPHER_SUITE_CCMP:
4034 keymlen = key->keylen;
4035 break;
4036 default:
4037 rc = -ENOTSUPP;
4038 goto done;
4039 }
4040
4041 memcpy(cmd->key_material, key->key, keymlen);
4042 cmd->action = cpu_to_le32(action);
4043
4044 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4045 done:
4046 kfree(cmd);
4047
4048 return rc;
4049 }
4050
mwl8k_cmd_encryption_remove_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u8 * addr,struct ieee80211_key_conf * key)4051 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4052 struct ieee80211_vif *vif,
4053 u8 *addr,
4054 struct ieee80211_key_conf *key)
4055 {
4056 struct mwl8k_cmd_set_key *cmd;
4057 int rc;
4058 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4059
4060 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4061 if (cmd == NULL)
4062 return -ENOMEM;
4063
4064 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4065 if (rc < 0)
4066 goto done;
4067
4068 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4069 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4070 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4071
4072 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4073
4074 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4075 done:
4076 kfree(cmd);
4077
4078 return rc;
4079 }
4080
mwl8k_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd_param,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)4081 static int mwl8k_set_key(struct ieee80211_hw *hw,
4082 enum set_key_cmd cmd_param,
4083 struct ieee80211_vif *vif,
4084 struct ieee80211_sta *sta,
4085 struct ieee80211_key_conf *key)
4086 {
4087 int rc = 0;
4088 u8 encr_type;
4089 u8 *addr;
4090 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4091
4092 if (vif->type == NL80211_IFTYPE_STATION)
4093 return -EOPNOTSUPP;
4094
4095 if (sta == NULL)
4096 addr = hw->wiphy->perm_addr;
4097 else
4098 addr = sta->addr;
4099
4100 if (cmd_param == SET_KEY) {
4101 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4102 if (rc)
4103 goto out;
4104
4105 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4106 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4107 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4108 else
4109 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4110
4111 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4112 encr_type);
4113 if (rc)
4114 goto out;
4115
4116 mwl8k_vif->is_hw_crypto_enabled = true;
4117
4118 } else {
4119 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4120
4121 if (rc)
4122 goto out;
4123 }
4124 out:
4125 return rc;
4126 }
4127
4128 /*
4129 * CMD_UPDATE_STADB.
4130 */
4131 struct ewc_ht_info {
4132 __le16 control1;
4133 __le16 control2;
4134 __le16 control3;
4135 } __packed;
4136
4137 struct peer_capability_info {
4138 /* Peer type - AP vs. STA. */
4139 __u8 peer_type;
4140
4141 /* Basic 802.11 capabilities from assoc resp. */
4142 __le16 basic_caps;
4143
4144 /* Set if peer supports 802.11n high throughput (HT). */
4145 __u8 ht_support;
4146
4147 /* Valid if HT is supported. */
4148 __le16 ht_caps;
4149 __u8 extended_ht_caps;
4150 struct ewc_ht_info ewc_info;
4151
4152 /* Legacy rate table. Intersection of our rates and peer rates. */
4153 __u8 legacy_rates[12];
4154
4155 /* HT rate table. Intersection of our rates and peer rates. */
4156 __u8 ht_rates[16];
4157 __u8 pad[16];
4158
4159 /* If set, interoperability mode, no proprietary extensions. */
4160 __u8 interop;
4161 __u8 pad2;
4162 __u8 station_id;
4163 __le16 amsdu_enabled;
4164 } __packed;
4165
4166 struct mwl8k_cmd_update_stadb {
4167 struct mwl8k_cmd_pkt header;
4168
4169 /* See STADB_ACTION_TYPE */
4170 __le32 action;
4171
4172 /* Peer MAC address */
4173 __u8 peer_addr[ETH_ALEN];
4174
4175 __le32 reserved;
4176
4177 /* Peer info - valid during add/update. */
4178 struct peer_capability_info peer_info;
4179 } __packed;
4180
4181 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4182 #define MWL8K_STA_DB_DEL_ENTRY 2
4183
4184 /* Peer Entry flags - used to define the type of the peer node */
4185 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4186
mwl8k_cmd_update_stadb_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)4187 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4188 struct ieee80211_vif *vif,
4189 struct ieee80211_sta *sta)
4190 {
4191 struct mwl8k_cmd_update_stadb *cmd;
4192 struct peer_capability_info *p;
4193 u32 rates;
4194 int rc;
4195
4196 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4197 if (cmd == NULL)
4198 return -ENOMEM;
4199
4200 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4201 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4202 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4203 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4204
4205 p = &cmd->peer_info;
4206 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4207 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4208 p->ht_support = sta->ht_cap.ht_supported;
4209 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4210 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4211 ((sta->ht_cap.ampdu_density & 7) << 2);
4212 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4213 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4214 else
4215 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4216 legacy_rate_mask_to_array(p->legacy_rates, rates);
4217 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4218 p->interop = 1;
4219 p->amsdu_enabled = 0;
4220
4221 rc = mwl8k_post_cmd(hw, &cmd->header);
4222 kfree(cmd);
4223
4224 return rc ? rc : p->station_id;
4225 }
4226
mwl8k_cmd_update_stadb_del(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u8 * addr)4227 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4228 struct ieee80211_vif *vif, u8 *addr)
4229 {
4230 struct mwl8k_cmd_update_stadb *cmd;
4231 int rc;
4232
4233 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4234 if (cmd == NULL)
4235 return -ENOMEM;
4236
4237 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4238 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4239 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4240 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4241
4242 rc = mwl8k_post_cmd(hw, &cmd->header);
4243 kfree(cmd);
4244
4245 return rc;
4246 }
4247
4248
4249 /*
4250 * Interrupt handling.
4251 */
mwl8k_interrupt(int irq,void * dev_id)4252 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4253 {
4254 struct ieee80211_hw *hw = dev_id;
4255 struct mwl8k_priv *priv = hw->priv;
4256 u32 status;
4257
4258 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4259 if (!status)
4260 return IRQ_NONE;
4261
4262 if (status & MWL8K_A2H_INT_TX_DONE) {
4263 status &= ~MWL8K_A2H_INT_TX_DONE;
4264 tasklet_schedule(&priv->poll_tx_task);
4265 }
4266
4267 if (status & MWL8K_A2H_INT_RX_READY) {
4268 status &= ~MWL8K_A2H_INT_RX_READY;
4269 tasklet_schedule(&priv->poll_rx_task);
4270 }
4271
4272 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4273 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4274 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4275 }
4276
4277 if (status)
4278 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4279
4280 if (status & MWL8K_A2H_INT_OPC_DONE) {
4281 if (priv->hostcmd_wait != NULL)
4282 complete(priv->hostcmd_wait);
4283 }
4284
4285 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4286 if (!mutex_is_locked(&priv->fw_mutex) &&
4287 priv->radio_on && priv->pending_tx_pkts)
4288 mwl8k_tx_start(priv);
4289 }
4290
4291 return IRQ_HANDLED;
4292 }
4293
mwl8k_tx_poll(unsigned long data)4294 static void mwl8k_tx_poll(unsigned long data)
4295 {
4296 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4297 struct mwl8k_priv *priv = hw->priv;
4298 int limit;
4299 int i;
4300
4301 limit = 32;
4302
4303 spin_lock_bh(&priv->tx_lock);
4304
4305 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4306 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4307
4308 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4309 complete(priv->tx_wait);
4310 priv->tx_wait = NULL;
4311 }
4312
4313 spin_unlock_bh(&priv->tx_lock);
4314
4315 if (limit) {
4316 writel(~MWL8K_A2H_INT_TX_DONE,
4317 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4318 } else {
4319 tasklet_schedule(&priv->poll_tx_task);
4320 }
4321 }
4322
mwl8k_rx_poll(unsigned long data)4323 static void mwl8k_rx_poll(unsigned long data)
4324 {
4325 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4326 struct mwl8k_priv *priv = hw->priv;
4327 int limit;
4328
4329 limit = 32;
4330 limit -= rxq_process(hw, 0, limit);
4331 limit -= rxq_refill(hw, 0, limit);
4332
4333 if (limit) {
4334 writel(~MWL8K_A2H_INT_RX_READY,
4335 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4336 } else {
4337 tasklet_schedule(&priv->poll_rx_task);
4338 }
4339 }
4340
4341
4342 /*
4343 * Core driver operations.
4344 */
mwl8k_tx(struct ieee80211_hw * hw,struct sk_buff * skb)4345 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4346 {
4347 struct mwl8k_priv *priv = hw->priv;
4348 int index = skb_get_queue_mapping(skb);
4349
4350 if (!priv->radio_on) {
4351 wiphy_debug(hw->wiphy,
4352 "dropped TX frame since radio disabled\n");
4353 dev_kfree_skb(skb);
4354 return;
4355 }
4356
4357 mwl8k_txq_xmit(hw, index, skb);
4358 }
4359
mwl8k_start(struct ieee80211_hw * hw)4360 static int mwl8k_start(struct ieee80211_hw *hw)
4361 {
4362 struct mwl8k_priv *priv = hw->priv;
4363 int rc;
4364
4365 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4366 IRQF_SHARED, MWL8K_NAME, hw);
4367 if (rc) {
4368 priv->irq = -1;
4369 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4370 return -EIO;
4371 }
4372 priv->irq = priv->pdev->irq;
4373
4374 /* Enable TX reclaim and RX tasklets. */
4375 tasklet_enable(&priv->poll_tx_task);
4376 tasklet_enable(&priv->poll_rx_task);
4377
4378 /* Enable interrupts */
4379 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4380 iowrite32(MWL8K_A2H_EVENTS,
4381 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4382
4383 rc = mwl8k_fw_lock(hw);
4384 if (!rc) {
4385 rc = mwl8k_cmd_radio_enable(hw);
4386
4387 if (!priv->ap_fw) {
4388 if (!rc)
4389 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4390
4391 if (!rc)
4392 rc = mwl8k_cmd_set_pre_scan(hw);
4393
4394 if (!rc)
4395 rc = mwl8k_cmd_set_post_scan(hw,
4396 "\x00\x00\x00\x00\x00\x00");
4397 }
4398
4399 if (!rc)
4400 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4401
4402 if (!rc)
4403 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4404
4405 mwl8k_fw_unlock(hw);
4406 }
4407
4408 if (rc) {
4409 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4410 free_irq(priv->pdev->irq, hw);
4411 priv->irq = -1;
4412 tasklet_disable(&priv->poll_tx_task);
4413 tasklet_disable(&priv->poll_rx_task);
4414 }
4415
4416 return rc;
4417 }
4418
mwl8k_stop(struct ieee80211_hw * hw)4419 static void mwl8k_stop(struct ieee80211_hw *hw)
4420 {
4421 struct mwl8k_priv *priv = hw->priv;
4422 int i;
4423
4424 if (!priv->hw_restart_in_progress)
4425 mwl8k_cmd_radio_disable(hw);
4426
4427 ieee80211_stop_queues(hw);
4428
4429 /* Disable interrupts */
4430 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4431 if (priv->irq != -1) {
4432 free_irq(priv->pdev->irq, hw);
4433 priv->irq = -1;
4434 }
4435
4436 /* Stop finalize join worker */
4437 cancel_work_sync(&priv->finalize_join_worker);
4438 cancel_work_sync(&priv->watchdog_ba_handle);
4439 if (priv->beacon_skb != NULL)
4440 dev_kfree_skb(priv->beacon_skb);
4441
4442 /* Stop TX reclaim and RX tasklets. */
4443 tasklet_disable(&priv->poll_tx_task);
4444 tasklet_disable(&priv->poll_rx_task);
4445
4446 /* Return all skbs to mac80211 */
4447 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4448 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4449 }
4450
4451 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4452
mwl8k_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)4453 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4454 struct ieee80211_vif *vif)
4455 {
4456 struct mwl8k_priv *priv = hw->priv;
4457 struct mwl8k_vif *mwl8k_vif;
4458 u32 macids_supported;
4459 int macid, rc;
4460 struct mwl8k_device_info *di;
4461
4462 /*
4463 * Reject interface creation if sniffer mode is active, as
4464 * STA operation is mutually exclusive with hardware sniffer
4465 * mode. (Sniffer mode is only used on STA firmware.)
4466 */
4467 if (priv->sniffer_enabled) {
4468 wiphy_info(hw->wiphy,
4469 "unable to create STA interface because sniffer mode is enabled\n");
4470 return -EINVAL;
4471 }
4472
4473 di = priv->device_info;
4474 switch (vif->type) {
4475 case NL80211_IFTYPE_AP:
4476 if (!priv->ap_fw && di->fw_image_ap) {
4477 /* we must load the ap fw to meet this request */
4478 if (!list_empty(&priv->vif_list))
4479 return -EBUSY;
4480 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4481 if (rc)
4482 return rc;
4483 }
4484 macids_supported = priv->ap_macids_supported;
4485 break;
4486 case NL80211_IFTYPE_STATION:
4487 if (priv->ap_fw && di->fw_image_sta) {
4488 /* we must load the sta fw to meet this request */
4489 if (!list_empty(&priv->vif_list))
4490 return -EBUSY;
4491 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4492 if (rc)
4493 return rc;
4494 }
4495 macids_supported = priv->sta_macids_supported;
4496 break;
4497 default:
4498 return -EINVAL;
4499 }
4500
4501 macid = ffs(macids_supported & ~priv->macids_used);
4502 if (!macid--)
4503 return -EBUSY;
4504
4505 /* Setup driver private area. */
4506 mwl8k_vif = MWL8K_VIF(vif);
4507 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4508 mwl8k_vif->vif = vif;
4509 mwl8k_vif->macid = macid;
4510 mwl8k_vif->seqno = 0;
4511 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4512 mwl8k_vif->is_hw_crypto_enabled = false;
4513
4514 /* Set the mac address. */
4515 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4516
4517 if (priv->ap_fw)
4518 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4519
4520 priv->macids_used |= 1 << mwl8k_vif->macid;
4521 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4522
4523 return 0;
4524 }
4525
mwl8k_remove_vif(struct mwl8k_priv * priv,struct mwl8k_vif * vif)4526 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4527 {
4528 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4529 if (!priv->macids_used)
4530 return;
4531
4532 priv->macids_used &= ~(1 << vif->macid);
4533 list_del(&vif->list);
4534 }
4535
mwl8k_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)4536 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4537 struct ieee80211_vif *vif)
4538 {
4539 struct mwl8k_priv *priv = hw->priv;
4540 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4541
4542 if (priv->ap_fw)
4543 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4544
4545 mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4546
4547 mwl8k_remove_vif(priv, mwl8k_vif);
4548 }
4549
mwl8k_hw_restart_work(struct work_struct * work)4550 static void mwl8k_hw_restart_work(struct work_struct *work)
4551 {
4552 struct mwl8k_priv *priv =
4553 container_of(work, struct mwl8k_priv, fw_reload);
4554 struct ieee80211_hw *hw = priv->hw;
4555 struct mwl8k_device_info *di;
4556 int rc;
4557
4558 /* If some command is waiting for a response, clear it */
4559 if (priv->hostcmd_wait != NULL) {
4560 complete(priv->hostcmd_wait);
4561 priv->hostcmd_wait = NULL;
4562 }
4563
4564 priv->hw_restart_owner = current;
4565 di = priv->device_info;
4566 mwl8k_fw_lock(hw);
4567
4568 if (priv->ap_fw)
4569 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4570 else
4571 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4572
4573 if (rc)
4574 goto fail;
4575
4576 priv->hw_restart_owner = NULL;
4577 priv->hw_restart_in_progress = false;
4578
4579 /*
4580 * This unlock will wake up the queues and
4581 * also opens the command path for other
4582 * commands
4583 */
4584 mwl8k_fw_unlock(hw);
4585
4586 ieee80211_restart_hw(hw);
4587
4588 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4589
4590 return;
4591 fail:
4592 mwl8k_fw_unlock(hw);
4593
4594 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4595 }
4596
mwl8k_config(struct ieee80211_hw * hw,u32 changed)4597 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4598 {
4599 struct ieee80211_conf *conf = &hw->conf;
4600 struct mwl8k_priv *priv = hw->priv;
4601 int rc;
4602
4603 if (conf->flags & IEEE80211_CONF_IDLE) {
4604 mwl8k_cmd_radio_disable(hw);
4605 return 0;
4606 }
4607
4608 rc = mwl8k_fw_lock(hw);
4609 if (rc)
4610 return rc;
4611
4612 rc = mwl8k_cmd_radio_enable(hw);
4613 if (rc)
4614 goto out;
4615
4616 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4617 if (rc)
4618 goto out;
4619
4620 if (conf->power_level > 18)
4621 conf->power_level = 18;
4622
4623 if (priv->ap_fw) {
4624
4625 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4626 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4627 if (rc)
4628 goto out;
4629 }
4630
4631 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4632 if (rc)
4633 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4634 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4635 if (rc)
4636 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4637
4638 } else {
4639 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4640 if (rc)
4641 goto out;
4642 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4643 }
4644
4645 out:
4646 mwl8k_fw_unlock(hw);
4647
4648 return rc;
4649 }
4650
4651 static void
mwl8k_bss_info_changed_sta(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)4652 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4653 struct ieee80211_bss_conf *info, u32 changed)
4654 {
4655 struct mwl8k_priv *priv = hw->priv;
4656 u32 ap_legacy_rates = 0;
4657 u8 ap_mcs_rates[16];
4658 int rc;
4659
4660 if (mwl8k_fw_lock(hw))
4661 return;
4662
4663 /*
4664 * No need to capture a beacon if we're no longer associated.
4665 */
4666 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4667 priv->capture_beacon = false;
4668
4669 /*
4670 * Get the AP's legacy and MCS rates.
4671 */
4672 if (vif->bss_conf.assoc) {
4673 struct ieee80211_sta *ap;
4674
4675 rcu_read_lock();
4676
4677 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4678 if (ap == NULL) {
4679 rcu_read_unlock();
4680 goto out;
4681 }
4682
4683 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4684 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4685 } else {
4686 ap_legacy_rates =
4687 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4688 }
4689 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4690
4691 rcu_read_unlock();
4692 }
4693
4694 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4695 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4696 if (rc)
4697 goto out;
4698
4699 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4700 if (rc)
4701 goto out;
4702 }
4703
4704 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4705 rc = mwl8k_set_radio_preamble(hw,
4706 vif->bss_conf.use_short_preamble);
4707 if (rc)
4708 goto out;
4709 }
4710
4711 if (changed & BSS_CHANGED_ERP_SLOT) {
4712 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4713 if (rc)
4714 goto out;
4715 }
4716
4717 if (vif->bss_conf.assoc &&
4718 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4719 BSS_CHANGED_HT))) {
4720 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4721 if (rc)
4722 goto out;
4723 }
4724
4725 if (vif->bss_conf.assoc &&
4726 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4727 /*
4728 * Finalize the join. Tell rx handler to process
4729 * next beacon from our BSSID.
4730 */
4731 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4732 priv->capture_beacon = true;
4733 }
4734
4735 out:
4736 mwl8k_fw_unlock(hw);
4737 }
4738
4739 static void
mwl8k_bss_info_changed_ap(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)4740 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4741 struct ieee80211_bss_conf *info, u32 changed)
4742 {
4743 int rc;
4744
4745 if (mwl8k_fw_lock(hw))
4746 return;
4747
4748 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4749 rc = mwl8k_set_radio_preamble(hw,
4750 vif->bss_conf.use_short_preamble);
4751 if (rc)
4752 goto out;
4753 }
4754
4755 if (changed & BSS_CHANGED_BASIC_RATES) {
4756 int idx;
4757 int rate;
4758
4759 /*
4760 * Use lowest supported basic rate for multicasts
4761 * and management frames (such as probe responses --
4762 * beacons will always go out at 1 Mb/s).
4763 */
4764 idx = ffs(vif->bss_conf.basic_rates);
4765 if (idx)
4766 idx--;
4767
4768 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4769 rate = mwl8k_rates_24[idx].hw_value;
4770 else
4771 rate = mwl8k_rates_50[idx].hw_value;
4772
4773 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4774 }
4775
4776 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4777 struct sk_buff *skb;
4778
4779 skb = ieee80211_beacon_get(hw, vif);
4780 if (skb != NULL) {
4781 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4782 kfree_skb(skb);
4783 }
4784 }
4785
4786 if (changed & BSS_CHANGED_BEACON_ENABLED)
4787 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4788
4789 out:
4790 mwl8k_fw_unlock(hw);
4791 }
4792
4793 static void
mwl8k_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * info,u32 changed)4794 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4795 struct ieee80211_bss_conf *info, u32 changed)
4796 {
4797 struct mwl8k_priv *priv = hw->priv;
4798
4799 if (!priv->ap_fw)
4800 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4801 else
4802 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4803 }
4804
mwl8k_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)4805 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4806 struct netdev_hw_addr_list *mc_list)
4807 {
4808 struct mwl8k_cmd_pkt *cmd;
4809
4810 /*
4811 * Synthesize and return a command packet that programs the
4812 * hardware multicast address filter. At this point we don't
4813 * know whether FIF_ALLMULTI is being requested, but if it is,
4814 * we'll end up throwing this packet away and creating a new
4815 * one in mwl8k_configure_filter().
4816 */
4817 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4818
4819 return (unsigned long)cmd;
4820 }
4821
4822 static int
mwl8k_configure_filter_sniffer(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags)4823 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4824 unsigned int changed_flags,
4825 unsigned int *total_flags)
4826 {
4827 struct mwl8k_priv *priv = hw->priv;
4828
4829 /*
4830 * Hardware sniffer mode is mutually exclusive with STA
4831 * operation, so refuse to enable sniffer mode if a STA
4832 * interface is active.
4833 */
4834 if (!list_empty(&priv->vif_list)) {
4835 if (net_ratelimit())
4836 wiphy_info(hw->wiphy,
4837 "not enabling sniffer mode because STA interface is active\n");
4838 return 0;
4839 }
4840
4841 if (!priv->sniffer_enabled) {
4842 if (mwl8k_cmd_enable_sniffer(hw, 1))
4843 return 0;
4844 priv->sniffer_enabled = true;
4845 }
4846
4847 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4848 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4849 FIF_OTHER_BSS;
4850
4851 return 1;
4852 }
4853
mwl8k_first_vif(struct mwl8k_priv * priv)4854 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4855 {
4856 if (!list_empty(&priv->vif_list))
4857 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4858
4859 return NULL;
4860 }
4861
mwl8k_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)4862 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4863 unsigned int changed_flags,
4864 unsigned int *total_flags,
4865 u64 multicast)
4866 {
4867 struct mwl8k_priv *priv = hw->priv;
4868 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4869
4870 /*
4871 * AP firmware doesn't allow fine-grained control over
4872 * the receive filter.
4873 */
4874 if (priv->ap_fw) {
4875 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4876 kfree(cmd);
4877 return;
4878 }
4879
4880 /*
4881 * Enable hardware sniffer mode if FIF_CONTROL or
4882 * FIF_OTHER_BSS is requested.
4883 */
4884 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4885 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4886 kfree(cmd);
4887 return;
4888 }
4889
4890 /* Clear unsupported feature flags */
4891 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4892
4893 if (mwl8k_fw_lock(hw)) {
4894 kfree(cmd);
4895 return;
4896 }
4897
4898 if (priv->sniffer_enabled) {
4899 mwl8k_cmd_enable_sniffer(hw, 0);
4900 priv->sniffer_enabled = false;
4901 }
4902
4903 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4904 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4905 /*
4906 * Disable the BSS filter.
4907 */
4908 mwl8k_cmd_set_pre_scan(hw);
4909 } else {
4910 struct mwl8k_vif *mwl8k_vif;
4911 const u8 *bssid;
4912
4913 /*
4914 * Enable the BSS filter.
4915 *
4916 * If there is an active STA interface, use that
4917 * interface's BSSID, otherwise use a dummy one
4918 * (where the OUI part needs to be nonzero for
4919 * the BSSID to be accepted by POST_SCAN).
4920 */
4921 mwl8k_vif = mwl8k_first_vif(priv);
4922 if (mwl8k_vif != NULL)
4923 bssid = mwl8k_vif->vif->bss_conf.bssid;
4924 else
4925 bssid = "\x01\x00\x00\x00\x00\x00";
4926
4927 mwl8k_cmd_set_post_scan(hw, bssid);
4928 }
4929 }
4930
4931 /*
4932 * If FIF_ALLMULTI is being requested, throw away the command
4933 * packet that ->prepare_multicast() built and replace it with
4934 * a command packet that enables reception of all multicast
4935 * packets.
4936 */
4937 if (*total_flags & FIF_ALLMULTI) {
4938 kfree(cmd);
4939 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4940 }
4941
4942 if (cmd != NULL) {
4943 mwl8k_post_cmd(hw, cmd);
4944 kfree(cmd);
4945 }
4946
4947 mwl8k_fw_unlock(hw);
4948 }
4949
mwl8k_set_rts_threshold(struct ieee80211_hw * hw,u32 value)4950 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4951 {
4952 return mwl8k_cmd_set_rts_threshold(hw, value);
4953 }
4954
mwl8k_sta_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)4955 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4956 struct ieee80211_vif *vif,
4957 struct ieee80211_sta *sta)
4958 {
4959 struct mwl8k_priv *priv = hw->priv;
4960
4961 if (priv->ap_fw)
4962 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4963 else
4964 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4965 }
4966
mwl8k_sta_add(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)4967 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4968 struct ieee80211_vif *vif,
4969 struct ieee80211_sta *sta)
4970 {
4971 struct mwl8k_priv *priv = hw->priv;
4972 int ret;
4973 int i;
4974 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4975 struct ieee80211_key_conf *key;
4976
4977 if (!priv->ap_fw) {
4978 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4979 if (ret >= 0) {
4980 MWL8K_STA(sta)->peer_id = ret;
4981 if (sta->ht_cap.ht_supported)
4982 MWL8K_STA(sta)->is_ampdu_allowed = true;
4983 ret = 0;
4984 }
4985
4986 } else {
4987 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4988 }
4989
4990 for (i = 0; i < NUM_WEP_KEYS; i++) {
4991 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4992 if (mwl8k_vif->wep_key_conf[i].enabled)
4993 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4994 }
4995 return ret;
4996 }
4997
mwl8k_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)4998 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
4999 struct ieee80211_vif *vif, u16 queue,
5000 const struct ieee80211_tx_queue_params *params)
5001 {
5002 struct mwl8k_priv *priv = hw->priv;
5003 int rc;
5004
5005 rc = mwl8k_fw_lock(hw);
5006 if (!rc) {
5007 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5008 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5009
5010 if (!priv->wmm_enabled)
5011 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5012
5013 if (!rc) {
5014 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5015 rc = mwl8k_cmd_set_edca_params(hw, q,
5016 params->cw_min,
5017 params->cw_max,
5018 params->aifs,
5019 params->txop);
5020 }
5021
5022 mwl8k_fw_unlock(hw);
5023 }
5024
5025 return rc;
5026 }
5027
mwl8k_get_stats(struct ieee80211_hw * hw,struct ieee80211_low_level_stats * stats)5028 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5029 struct ieee80211_low_level_stats *stats)
5030 {
5031 return mwl8k_cmd_get_stat(hw, stats);
5032 }
5033
mwl8k_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)5034 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5035 struct survey_info *survey)
5036 {
5037 struct mwl8k_priv *priv = hw->priv;
5038 struct ieee80211_conf *conf = &hw->conf;
5039
5040 if (idx != 0)
5041 return -ENOENT;
5042
5043 survey->channel = conf->channel;
5044 survey->filled = SURVEY_INFO_NOISE_DBM;
5045 survey->noise = priv->noise;
5046
5047 return 0;
5048 }
5049
5050 #define MAX_AMPDU_ATTEMPTS 5
5051
5052 static int
mwl8k_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum ieee80211_ampdu_mlme_action action,struct ieee80211_sta * sta,u16 tid,u16 * ssn,u8 buf_size)5053 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5054 enum ieee80211_ampdu_mlme_action action,
5055 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5056 u8 buf_size)
5057 {
5058
5059 int i, rc = 0;
5060 struct mwl8k_priv *priv = hw->priv;
5061 struct mwl8k_ampdu_stream *stream;
5062 u8 *addr = sta->addr;
5063
5064 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5065 return -ENOTSUPP;
5066
5067 spin_lock(&priv->stream_lock);
5068 stream = mwl8k_lookup_stream(hw, addr, tid);
5069
5070 switch (action) {
5071 case IEEE80211_AMPDU_RX_START:
5072 case IEEE80211_AMPDU_RX_STOP:
5073 break;
5074 case IEEE80211_AMPDU_TX_START:
5075 /* By the time we get here the hw queues may contain outgoing
5076 * packets for this RA/TID that are not part of this BA
5077 * session. The hw will assign sequence numbers to these
5078 * packets as they go out. So if we query the hw for its next
5079 * sequence number and use that for the SSN here, it may end up
5080 * being wrong, which will lead to sequence number mismatch at
5081 * the recipient. To avoid this, we reset the sequence number
5082 * to O for the first MPDU in this BA stream.
5083 */
5084 *ssn = 0;
5085 if (stream == NULL) {
5086 /* This means that somebody outside this driver called
5087 * ieee80211_start_tx_ba_session. This is unexpected
5088 * because we do our own rate control. Just warn and
5089 * move on.
5090 */
5091 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5092 "Proceeding anyway.\n", __func__);
5093 stream = mwl8k_add_stream(hw, sta, tid);
5094 }
5095 if (stream == NULL) {
5096 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5097 rc = -EBUSY;
5098 break;
5099 }
5100 stream->state = AMPDU_STREAM_IN_PROGRESS;
5101
5102 /* Release the lock before we do the time consuming stuff */
5103 spin_unlock(&priv->stream_lock);
5104 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5105 rc = mwl8k_check_ba(hw, stream);
5106
5107 /* If HW restart is in progress mwl8k_post_cmd will
5108 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5109 * such cases
5110 */
5111 if (!rc || rc == -EBUSY)
5112 break;
5113 /*
5114 * HW queues take time to be flushed, give them
5115 * sufficient time
5116 */
5117
5118 msleep(1000);
5119 }
5120 spin_lock(&priv->stream_lock);
5121 if (rc) {
5122 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5123 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5124 mwl8k_remove_stream(hw, stream);
5125 rc = -EBUSY;
5126 break;
5127 }
5128 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5129 break;
5130 case IEEE80211_AMPDU_TX_STOP:
5131 if (stream) {
5132 if (stream->state == AMPDU_STREAM_ACTIVE) {
5133 spin_unlock(&priv->stream_lock);
5134 mwl8k_destroy_ba(hw, stream);
5135 spin_lock(&priv->stream_lock);
5136 }
5137 mwl8k_remove_stream(hw, stream);
5138 }
5139 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5140 break;
5141 case IEEE80211_AMPDU_TX_OPERATIONAL:
5142 BUG_ON(stream == NULL);
5143 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5144 spin_unlock(&priv->stream_lock);
5145 rc = mwl8k_create_ba(hw, stream, buf_size);
5146 spin_lock(&priv->stream_lock);
5147 if (!rc)
5148 stream->state = AMPDU_STREAM_ACTIVE;
5149 else {
5150 spin_unlock(&priv->stream_lock);
5151 mwl8k_destroy_ba(hw, stream);
5152 spin_lock(&priv->stream_lock);
5153 wiphy_debug(hw->wiphy,
5154 "Failed adding stream for sta %pM tid %d\n",
5155 addr, tid);
5156 mwl8k_remove_stream(hw, stream);
5157 }
5158 break;
5159
5160 default:
5161 rc = -ENOTSUPP;
5162 }
5163
5164 spin_unlock(&priv->stream_lock);
5165 return rc;
5166 }
5167
5168 static const struct ieee80211_ops mwl8k_ops = {
5169 .tx = mwl8k_tx,
5170 .start = mwl8k_start,
5171 .stop = mwl8k_stop,
5172 .add_interface = mwl8k_add_interface,
5173 .remove_interface = mwl8k_remove_interface,
5174 .config = mwl8k_config,
5175 .bss_info_changed = mwl8k_bss_info_changed,
5176 .prepare_multicast = mwl8k_prepare_multicast,
5177 .configure_filter = mwl8k_configure_filter,
5178 .set_key = mwl8k_set_key,
5179 .set_rts_threshold = mwl8k_set_rts_threshold,
5180 .sta_add = mwl8k_sta_add,
5181 .sta_remove = mwl8k_sta_remove,
5182 .conf_tx = mwl8k_conf_tx,
5183 .get_stats = mwl8k_get_stats,
5184 .get_survey = mwl8k_get_survey,
5185 .ampdu_action = mwl8k_ampdu_action,
5186 };
5187
mwl8k_finalize_join_worker(struct work_struct * work)5188 static void mwl8k_finalize_join_worker(struct work_struct *work)
5189 {
5190 struct mwl8k_priv *priv =
5191 container_of(work, struct mwl8k_priv, finalize_join_worker);
5192 struct sk_buff *skb = priv->beacon_skb;
5193 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5194 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5195 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5196 mgmt->u.beacon.variable, len);
5197 int dtim_period = 1;
5198
5199 if (tim && tim[1] >= 2)
5200 dtim_period = tim[3];
5201
5202 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5203
5204 dev_kfree_skb(skb);
5205 priv->beacon_skb = NULL;
5206 }
5207
5208 enum {
5209 MWL8363 = 0,
5210 MWL8687,
5211 MWL8366,
5212 };
5213
5214 #define MWL8K_8366_AP_FW_API 2
5215 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5216 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5217
5218 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5219 [MWL8363] = {
5220 .part_name = "88w8363",
5221 .helper_image = "mwl8k/helper_8363.fw",
5222 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5223 },
5224 [MWL8687] = {
5225 .part_name = "88w8687",
5226 .helper_image = "mwl8k/helper_8687.fw",
5227 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5228 },
5229 [MWL8366] = {
5230 .part_name = "88w8366",
5231 .helper_image = "mwl8k/helper_8366.fw",
5232 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5233 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5234 .fw_api_ap = MWL8K_8366_AP_FW_API,
5235 .ap_rxd_ops = &rxd_8366_ap_ops,
5236 },
5237 };
5238
5239 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5240 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5241 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5242 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5243 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5244 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5245 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5246
5247 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5248 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5249 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5250 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5251 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5252 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5253 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5254 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5255 { },
5256 };
5257 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5258
mwl8k_request_alt_fw(struct mwl8k_priv * priv)5259 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5260 {
5261 int rc;
5262 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5263 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5264 priv->fw_pref, priv->fw_alt);
5265 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5266 if (rc) {
5267 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5268 pci_name(priv->pdev), priv->fw_alt);
5269 return rc;
5270 }
5271 return 0;
5272 }
5273
5274 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
mwl8k_fw_state_machine(const struct firmware * fw,void * context)5275 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5276 {
5277 struct mwl8k_priv *priv = context;
5278 struct mwl8k_device_info *di = priv->device_info;
5279 int rc;
5280
5281 switch (priv->fw_state) {
5282 case FW_STATE_INIT:
5283 if (!fw) {
5284 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5285 pci_name(priv->pdev), di->helper_image);
5286 goto fail;
5287 }
5288 priv->fw_helper = fw;
5289 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5290 true);
5291 if (rc && priv->fw_alt) {
5292 rc = mwl8k_request_alt_fw(priv);
5293 if (rc)
5294 goto fail;
5295 priv->fw_state = FW_STATE_LOADING_ALT;
5296 } else if (rc)
5297 goto fail;
5298 else
5299 priv->fw_state = FW_STATE_LOADING_PREF;
5300 break;
5301
5302 case FW_STATE_LOADING_PREF:
5303 if (!fw) {
5304 if (priv->fw_alt) {
5305 rc = mwl8k_request_alt_fw(priv);
5306 if (rc)
5307 goto fail;
5308 priv->fw_state = FW_STATE_LOADING_ALT;
5309 } else
5310 goto fail;
5311 } else {
5312 priv->fw_ucode = fw;
5313 rc = mwl8k_firmware_load_success(priv);
5314 if (rc)
5315 goto fail;
5316 else
5317 complete(&priv->firmware_loading_complete);
5318 }
5319 break;
5320
5321 case FW_STATE_LOADING_ALT:
5322 if (!fw) {
5323 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5324 pci_name(priv->pdev), di->helper_image);
5325 goto fail;
5326 }
5327 priv->fw_ucode = fw;
5328 rc = mwl8k_firmware_load_success(priv);
5329 if (rc)
5330 goto fail;
5331 else
5332 complete(&priv->firmware_loading_complete);
5333 break;
5334
5335 default:
5336 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5337 MWL8K_NAME, priv->fw_state);
5338 BUG_ON(1);
5339 }
5340
5341 return;
5342
5343 fail:
5344 priv->fw_state = FW_STATE_ERROR;
5345 complete(&priv->firmware_loading_complete);
5346 device_release_driver(&priv->pdev->dev);
5347 mwl8k_release_firmware(priv);
5348 }
5349
5350 #define MAX_RESTART_ATTEMPTS 1
mwl8k_init_firmware(struct ieee80211_hw * hw,char * fw_image,bool nowait)5351 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5352 bool nowait)
5353 {
5354 struct mwl8k_priv *priv = hw->priv;
5355 int rc;
5356 int count = MAX_RESTART_ATTEMPTS;
5357
5358 retry:
5359 /* Reset firmware and hardware */
5360 mwl8k_hw_reset(priv);
5361
5362 /* Ask userland hotplug daemon for the device firmware */
5363 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5364 if (rc) {
5365 wiphy_err(hw->wiphy, "Firmware files not found\n");
5366 return rc;
5367 }
5368
5369 if (nowait)
5370 return rc;
5371
5372 /* Load firmware into hardware */
5373 rc = mwl8k_load_firmware(hw);
5374 if (rc)
5375 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5376
5377 /* Reclaim memory once firmware is successfully loaded */
5378 mwl8k_release_firmware(priv);
5379
5380 if (rc && count) {
5381 /* FW did not start successfully;
5382 * lets try one more time
5383 */
5384 count--;
5385 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5386 msleep(20);
5387 goto retry;
5388 }
5389
5390 return rc;
5391 }
5392
mwl8k_init_txqs(struct ieee80211_hw * hw)5393 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5394 {
5395 struct mwl8k_priv *priv = hw->priv;
5396 int rc = 0;
5397 int i;
5398
5399 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5400 rc = mwl8k_txq_init(hw, i);
5401 if (rc)
5402 break;
5403 if (priv->ap_fw)
5404 iowrite32(priv->txq[i].txd_dma,
5405 priv->sram + priv->txq_offset[i]);
5406 }
5407 return rc;
5408 }
5409
5410 /* initialize hw after successfully loading a firmware image */
mwl8k_probe_hw(struct ieee80211_hw * hw)5411 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5412 {
5413 struct mwl8k_priv *priv = hw->priv;
5414 int rc = 0;
5415 int i;
5416
5417 if (priv->ap_fw) {
5418 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5419 if (priv->rxd_ops == NULL) {
5420 wiphy_err(hw->wiphy,
5421 "Driver does not have AP firmware image support for this hardware\n");
5422 goto err_stop_firmware;
5423 }
5424 } else {
5425 priv->rxd_ops = &rxd_sta_ops;
5426 }
5427
5428 priv->sniffer_enabled = false;
5429 priv->wmm_enabled = false;
5430 priv->pending_tx_pkts = 0;
5431
5432 rc = mwl8k_rxq_init(hw, 0);
5433 if (rc)
5434 goto err_stop_firmware;
5435 rxq_refill(hw, 0, INT_MAX);
5436
5437 /* For the sta firmware, we need to know the dma addresses of tx queues
5438 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5439 * prior to issuing this command. But for the AP case, we learn the
5440 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5441 * case we must initialize the tx queues after.
5442 */
5443 priv->num_ampdu_queues = 0;
5444 if (!priv->ap_fw) {
5445 rc = mwl8k_init_txqs(hw);
5446 if (rc)
5447 goto err_free_queues;
5448 }
5449
5450 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5451 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5452 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5453 MWL8K_A2H_INT_BA_WATCHDOG,
5454 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5455 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5456 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5457
5458 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5459 IRQF_SHARED, MWL8K_NAME, hw);
5460 if (rc) {
5461 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5462 goto err_free_queues;
5463 }
5464
5465 /*
5466 * When hw restart is requested,
5467 * mac80211 will take care of clearing
5468 * the ampdu streams, so do not clear
5469 * the ampdu state here
5470 */
5471 if (!priv->hw_restart_in_progress)
5472 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5473
5474 /*
5475 * Temporarily enable interrupts. Initial firmware host
5476 * commands use interrupts and avoid polling. Disable
5477 * interrupts when done.
5478 */
5479 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5480
5481 /* Get config data, mac addrs etc */
5482 if (priv->ap_fw) {
5483 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5484 if (!rc)
5485 rc = mwl8k_init_txqs(hw);
5486 if (!rc)
5487 rc = mwl8k_cmd_set_hw_spec(hw);
5488 } else {
5489 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5490 }
5491 if (rc) {
5492 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5493 goto err_free_irq;
5494 }
5495
5496 /* Turn radio off */
5497 rc = mwl8k_cmd_radio_disable(hw);
5498 if (rc) {
5499 wiphy_err(hw->wiphy, "Cannot disable\n");
5500 goto err_free_irq;
5501 }
5502
5503 /* Clear MAC address */
5504 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5505 if (rc) {
5506 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5507 goto err_free_irq;
5508 }
5509
5510 /* Disable interrupts */
5511 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5512 free_irq(priv->pdev->irq, hw);
5513
5514 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5515 priv->device_info->part_name,
5516 priv->hw_rev, hw->wiphy->perm_addr,
5517 priv->ap_fw ? "AP" : "STA",
5518 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5519 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5520
5521 return 0;
5522
5523 err_free_irq:
5524 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5525 free_irq(priv->pdev->irq, hw);
5526
5527 err_free_queues:
5528 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5529 mwl8k_txq_deinit(hw, i);
5530 mwl8k_rxq_deinit(hw, 0);
5531
5532 err_stop_firmware:
5533 mwl8k_hw_reset(priv);
5534
5535 return rc;
5536 }
5537
5538 /*
5539 * invoke mwl8k_reload_firmware to change the firmware image after the device
5540 * has already been registered
5541 */
mwl8k_reload_firmware(struct ieee80211_hw * hw,char * fw_image)5542 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5543 {
5544 int i, rc = 0;
5545 struct mwl8k_priv *priv = hw->priv;
5546 struct mwl8k_vif *vif, *tmp_vif;
5547
5548 mwl8k_stop(hw);
5549 mwl8k_rxq_deinit(hw, 0);
5550
5551 /*
5552 * All the existing interfaces are re-added by the ieee80211_reconfig;
5553 * which means driver should remove existing interfaces before calling
5554 * ieee80211_restart_hw
5555 */
5556 if (priv->hw_restart_in_progress)
5557 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5558 mwl8k_remove_vif(priv, vif);
5559
5560 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5561 mwl8k_txq_deinit(hw, i);
5562
5563 rc = mwl8k_init_firmware(hw, fw_image, false);
5564 if (rc)
5565 goto fail;
5566
5567 rc = mwl8k_probe_hw(hw);
5568 if (rc)
5569 goto fail;
5570
5571 if (priv->hw_restart_in_progress)
5572 return rc;
5573
5574 rc = mwl8k_start(hw);
5575 if (rc)
5576 goto fail;
5577
5578 rc = mwl8k_config(hw, ~0);
5579 if (rc)
5580 goto fail;
5581
5582 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5583 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5584 if (rc)
5585 goto fail;
5586 }
5587
5588 return rc;
5589
5590 fail:
5591 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5592 return rc;
5593 }
5594
mwl8k_firmware_load_success(struct mwl8k_priv * priv)5595 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5596 {
5597 struct ieee80211_hw *hw = priv->hw;
5598 int i, rc;
5599
5600 rc = mwl8k_load_firmware(hw);
5601 mwl8k_release_firmware(priv);
5602 if (rc) {
5603 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5604 return rc;
5605 }
5606
5607 /*
5608 * Extra headroom is the size of the required DMA header
5609 * minus the size of the smallest 802.11 frame (CTS frame).
5610 */
5611 hw->extra_tx_headroom =
5612 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5613
5614 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5615
5616 hw->channel_change_time = 10;
5617
5618 hw->queues = MWL8K_TX_WMM_QUEUES;
5619
5620 /* Set rssi values to dBm */
5621 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5622
5623 /*
5624 * Ask mac80211 to not to trigger PS mode
5625 * based on PM bit of incoming frames.
5626 */
5627 if (priv->ap_fw)
5628 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5629
5630 hw->vif_data_size = sizeof(struct mwl8k_vif);
5631 hw->sta_data_size = sizeof(struct mwl8k_sta);
5632
5633 priv->macids_used = 0;
5634 INIT_LIST_HEAD(&priv->vif_list);
5635
5636 /* Set default radio state and preamble */
5637 priv->radio_on = false;
5638 priv->radio_short_preamble = false;
5639
5640 /* Finalize join worker */
5641 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5642 /* Handle watchdog ba events */
5643 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5644 /* To reload the firmware if it crashes */
5645 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5646
5647 /* TX reclaim and RX tasklets. */
5648 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5649 tasklet_disable(&priv->poll_tx_task);
5650 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5651 tasklet_disable(&priv->poll_rx_task);
5652
5653 /* Power management cookie */
5654 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5655 if (priv->cookie == NULL)
5656 return -ENOMEM;
5657
5658 mutex_init(&priv->fw_mutex);
5659 priv->fw_mutex_owner = NULL;
5660 priv->fw_mutex_depth = 0;
5661 priv->hostcmd_wait = NULL;
5662
5663 spin_lock_init(&priv->tx_lock);
5664
5665 spin_lock_init(&priv->stream_lock);
5666
5667 priv->tx_wait = NULL;
5668
5669 rc = mwl8k_probe_hw(hw);
5670 if (rc)
5671 goto err_free_cookie;
5672
5673 hw->wiphy->interface_modes = 0;
5674 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5675 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5676 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5677 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5678
5679 rc = ieee80211_register_hw(hw);
5680 if (rc) {
5681 wiphy_err(hw->wiphy, "Cannot register device\n");
5682 goto err_unprobe_hw;
5683 }
5684
5685 return 0;
5686
5687 err_unprobe_hw:
5688 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5689 mwl8k_txq_deinit(hw, i);
5690 mwl8k_rxq_deinit(hw, 0);
5691
5692 err_free_cookie:
5693 if (priv->cookie != NULL)
5694 pci_free_consistent(priv->pdev, 4,
5695 priv->cookie, priv->cookie_dma);
5696
5697 return rc;
5698 }
mwl8k_probe(struct pci_dev * pdev,const struct pci_device_id * id)5699 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5700 const struct pci_device_id *id)
5701 {
5702 static int printed_version;
5703 struct ieee80211_hw *hw;
5704 struct mwl8k_priv *priv;
5705 struct mwl8k_device_info *di;
5706 int rc;
5707
5708 if (!printed_version) {
5709 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5710 printed_version = 1;
5711 }
5712
5713
5714 rc = pci_enable_device(pdev);
5715 if (rc) {
5716 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5717 MWL8K_NAME);
5718 return rc;
5719 }
5720
5721 rc = pci_request_regions(pdev, MWL8K_NAME);
5722 if (rc) {
5723 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5724 MWL8K_NAME);
5725 goto err_disable_device;
5726 }
5727
5728 pci_set_master(pdev);
5729
5730
5731 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5732 if (hw == NULL) {
5733 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5734 rc = -ENOMEM;
5735 goto err_free_reg;
5736 }
5737
5738 SET_IEEE80211_DEV(hw, &pdev->dev);
5739 pci_set_drvdata(pdev, hw);
5740
5741 priv = hw->priv;
5742 priv->hw = hw;
5743 priv->pdev = pdev;
5744 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5745
5746
5747 priv->sram = pci_iomap(pdev, 0, 0x10000);
5748 if (priv->sram == NULL) {
5749 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5750 goto err_iounmap;
5751 }
5752
5753 /*
5754 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5755 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5756 */
5757 priv->regs = pci_iomap(pdev, 1, 0x10000);
5758 if (priv->regs == NULL) {
5759 priv->regs = pci_iomap(pdev, 2, 0x10000);
5760 if (priv->regs == NULL) {
5761 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5762 goto err_iounmap;
5763 }
5764 }
5765
5766 /*
5767 * Choose the initial fw image depending on user input. If a second
5768 * image is available, make it the alternative image that will be
5769 * loaded if the first one fails.
5770 */
5771 init_completion(&priv->firmware_loading_complete);
5772 di = priv->device_info;
5773 if (ap_mode_default && di->fw_image_ap) {
5774 priv->fw_pref = di->fw_image_ap;
5775 priv->fw_alt = di->fw_image_sta;
5776 } else if (!ap_mode_default && di->fw_image_sta) {
5777 priv->fw_pref = di->fw_image_sta;
5778 priv->fw_alt = di->fw_image_ap;
5779 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5780 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5781 priv->fw_pref = di->fw_image_sta;
5782 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5783 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5784 priv->fw_pref = di->fw_image_ap;
5785 }
5786 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5787 if (rc)
5788 goto err_stop_firmware;
5789
5790 priv->hw_restart_in_progress = false;
5791
5792 return rc;
5793
5794 err_stop_firmware:
5795 mwl8k_hw_reset(priv);
5796
5797 err_iounmap:
5798 if (priv->regs != NULL)
5799 pci_iounmap(pdev, priv->regs);
5800
5801 if (priv->sram != NULL)
5802 pci_iounmap(pdev, priv->sram);
5803
5804 pci_set_drvdata(pdev, NULL);
5805 ieee80211_free_hw(hw);
5806
5807 err_free_reg:
5808 pci_release_regions(pdev);
5809
5810 err_disable_device:
5811 pci_disable_device(pdev);
5812
5813 return rc;
5814 }
5815
mwl8k_shutdown(struct pci_dev * pdev)5816 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5817 {
5818 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5819 }
5820
mwl8k_remove(struct pci_dev * pdev)5821 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5822 {
5823 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5824 struct mwl8k_priv *priv;
5825 int i;
5826
5827 if (hw == NULL)
5828 return;
5829 priv = hw->priv;
5830
5831 wait_for_completion(&priv->firmware_loading_complete);
5832
5833 if (priv->fw_state == FW_STATE_ERROR) {
5834 mwl8k_hw_reset(priv);
5835 goto unmap;
5836 }
5837
5838 ieee80211_stop_queues(hw);
5839
5840 ieee80211_unregister_hw(hw);
5841
5842 /* Remove TX reclaim and RX tasklets. */
5843 tasklet_kill(&priv->poll_tx_task);
5844 tasklet_kill(&priv->poll_rx_task);
5845
5846 /* Stop hardware */
5847 mwl8k_hw_reset(priv);
5848
5849 /* Return all skbs to mac80211 */
5850 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5851 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5852
5853 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5854 mwl8k_txq_deinit(hw, i);
5855
5856 mwl8k_rxq_deinit(hw, 0);
5857
5858 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5859
5860 unmap:
5861 pci_iounmap(pdev, priv->regs);
5862 pci_iounmap(pdev, priv->sram);
5863 pci_set_drvdata(pdev, NULL);
5864 ieee80211_free_hw(hw);
5865 pci_release_regions(pdev);
5866 pci_disable_device(pdev);
5867 }
5868
5869 static struct pci_driver mwl8k_driver = {
5870 .name = MWL8K_NAME,
5871 .id_table = mwl8k_pci_id_table,
5872 .probe = mwl8k_probe,
5873 .remove = __devexit_p(mwl8k_remove),
5874 .shutdown = __devexit_p(mwl8k_shutdown),
5875 };
5876
mwl8k_init(void)5877 static int __init mwl8k_init(void)
5878 {
5879 return pci_register_driver(&mwl8k_driver);
5880 }
5881
mwl8k_exit(void)5882 static void __exit mwl8k_exit(void)
5883 {
5884 pci_unregister_driver(&mwl8k_driver);
5885 }
5886
5887 module_init(mwl8k_init);
5888 module_exit(mwl8k_exit);
5889
5890 MODULE_DESCRIPTION(MWL8K_DESC);
5891 MODULE_VERSION(MWL8K_VERSION);
5892 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5893 MODULE_LICENSE("GPL");
5894