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mwifiex: correction in MSDU padding logic
[deliverable/linux.git] / drivers / net / wireless / mwl8k.c
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_DEL_MAC_ADDR 0x0206 /* per-vif */
406 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
407 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
408 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
409 #define MWL8K_CMD_UPDATE_STADB 0x1123
410 #define MWL8K_CMD_BASTREAM 0x1125
411
412 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
413 {
414 u16 command = le16_to_cpu(cmd);
415
416 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
417 snprintf(buf, bufsize, "%s", #x);\
418 return buf;\
419 } while (0)
420 switch (command & ~0x8000) {
421 MWL8K_CMDNAME(CODE_DNLD);
422 MWL8K_CMDNAME(GET_HW_SPEC);
423 MWL8K_CMDNAME(SET_HW_SPEC);
424 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
425 MWL8K_CMDNAME(GET_STAT);
426 MWL8K_CMDNAME(RADIO_CONTROL);
427 MWL8K_CMDNAME(RF_TX_POWER);
428 MWL8K_CMDNAME(TX_POWER);
429 MWL8K_CMDNAME(RF_ANTENNA);
430 MWL8K_CMDNAME(SET_BEACON);
431 MWL8K_CMDNAME(SET_PRE_SCAN);
432 MWL8K_CMDNAME(SET_POST_SCAN);
433 MWL8K_CMDNAME(SET_RF_CHANNEL);
434 MWL8K_CMDNAME(SET_AID);
435 MWL8K_CMDNAME(SET_RATE);
436 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
437 MWL8K_CMDNAME(RTS_THRESHOLD);
438 MWL8K_CMDNAME(SET_SLOT);
439 MWL8K_CMDNAME(SET_EDCA_PARAMS);
440 MWL8K_CMDNAME(SET_WMM_MODE);
441 MWL8K_CMDNAME(MIMO_CONFIG);
442 MWL8K_CMDNAME(USE_FIXED_RATE);
443 MWL8K_CMDNAME(ENABLE_SNIFFER);
444 MWL8K_CMDNAME(SET_MAC_ADDR);
445 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
446 MWL8K_CMDNAME(BSS_START);
447 MWL8K_CMDNAME(SET_NEW_STN);
448 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
449 MWL8K_CMDNAME(UPDATE_STADB);
450 MWL8K_CMDNAME(BASTREAM);
451 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
452 default:
453 snprintf(buf, bufsize, "0x%x", cmd);
454 }
455 #undef MWL8K_CMDNAME
456
457 return buf;
458 }
459
460 /* Hardware and firmware reset */
461 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
462 {
463 iowrite32(MWL8K_H2A_INT_RESET,
464 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
465 iowrite32(MWL8K_H2A_INT_RESET,
466 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
467 msleep(20);
468 }
469
470 /* Release fw image */
471 static void mwl8k_release_fw(const struct firmware **fw)
472 {
473 if (*fw == NULL)
474 return;
475 release_firmware(*fw);
476 *fw = NULL;
477 }
478
479 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
480 {
481 mwl8k_release_fw(&priv->fw_ucode);
482 mwl8k_release_fw(&priv->fw_helper);
483 }
484
485 /* states for asynchronous f/w loading */
486 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
487 enum {
488 FW_STATE_INIT = 0,
489 FW_STATE_LOADING_PREF,
490 FW_STATE_LOADING_ALT,
491 FW_STATE_ERROR,
492 };
493
494 /* Request fw image */
495 static int mwl8k_request_fw(struct mwl8k_priv *priv,
496 const char *fname, const struct firmware **fw,
497 bool nowait)
498 {
499 /* release current image */
500 if (*fw != NULL)
501 mwl8k_release_fw(fw);
502
503 if (nowait)
504 return request_firmware_nowait(THIS_MODULE, 1, fname,
505 &priv->pdev->dev, GFP_KERNEL,
506 priv, mwl8k_fw_state_machine);
507 else
508 return request_firmware(fw, fname, &priv->pdev->dev);
509 }
510
511 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
512 bool nowait)
513 {
514 struct mwl8k_device_info *di = priv->device_info;
515 int rc;
516
517 if (di->helper_image != NULL) {
518 if (nowait)
519 rc = mwl8k_request_fw(priv, di->helper_image,
520 &priv->fw_helper, true);
521 else
522 rc = mwl8k_request_fw(priv, di->helper_image,
523 &priv->fw_helper, false);
524 if (rc)
525 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
526 pci_name(priv->pdev), di->helper_image);
527
528 if (rc || nowait)
529 return rc;
530 }
531
532 if (nowait) {
533 /*
534 * if we get here, no helper image is needed. Skip the
535 * FW_STATE_INIT state.
536 */
537 priv->fw_state = FW_STATE_LOADING_PREF;
538 rc = mwl8k_request_fw(priv, fw_image,
539 &priv->fw_ucode,
540 true);
541 } else
542 rc = mwl8k_request_fw(priv, fw_image,
543 &priv->fw_ucode, false);
544 if (rc) {
545 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
546 pci_name(priv->pdev), fw_image);
547 mwl8k_release_fw(&priv->fw_helper);
548 return rc;
549 }
550
551 return 0;
552 }
553
554 struct mwl8k_cmd_pkt {
555 __le16 code;
556 __le16 length;
557 __u8 seq_num;
558 __u8 macid;
559 __le16 result;
560 char payload[0];
561 } __packed;
562
563 /*
564 * Firmware loading.
565 */
566 static int
567 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
568 {
569 void __iomem *regs = priv->regs;
570 dma_addr_t dma_addr;
571 int loops;
572
573 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
574 if (pci_dma_mapping_error(priv->pdev, dma_addr))
575 return -ENOMEM;
576
577 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
578 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
579 iowrite32(MWL8K_H2A_INT_DOORBELL,
580 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
581 iowrite32(MWL8K_H2A_INT_DUMMY,
582 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
583
584 loops = 1000;
585 do {
586 u32 int_code;
587
588 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
589 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
590 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
591 break;
592 }
593
594 cond_resched();
595 udelay(1);
596 } while (--loops);
597
598 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
599
600 return loops ? 0 : -ETIMEDOUT;
601 }
602
603 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
604 const u8 *data, size_t length)
605 {
606 struct mwl8k_cmd_pkt *cmd;
607 int done;
608 int rc = 0;
609
610 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
611 if (cmd == NULL)
612 return -ENOMEM;
613
614 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
615 cmd->seq_num = 0;
616 cmd->macid = 0;
617 cmd->result = 0;
618
619 done = 0;
620 while (length) {
621 int block_size = length > 256 ? 256 : length;
622
623 memcpy(cmd->payload, data + done, block_size);
624 cmd->length = cpu_to_le16(block_size);
625
626 rc = mwl8k_send_fw_load_cmd(priv, cmd,
627 sizeof(*cmd) + block_size);
628 if (rc)
629 break;
630
631 done += block_size;
632 length -= block_size;
633 }
634
635 if (!rc) {
636 cmd->length = 0;
637 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
638 }
639
640 kfree(cmd);
641
642 return rc;
643 }
644
645 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
646 const u8 *data, size_t length)
647 {
648 unsigned char *buffer;
649 int may_continue, rc = 0;
650 u32 done, prev_block_size;
651
652 buffer = kmalloc(1024, GFP_KERNEL);
653 if (buffer == NULL)
654 return -ENOMEM;
655
656 done = 0;
657 prev_block_size = 0;
658 may_continue = 1000;
659 while (may_continue > 0) {
660 u32 block_size;
661
662 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
663 if (block_size & 1) {
664 block_size &= ~1;
665 may_continue--;
666 } else {
667 done += prev_block_size;
668 length -= prev_block_size;
669 }
670
671 if (block_size > 1024 || block_size > length) {
672 rc = -EOVERFLOW;
673 break;
674 }
675
676 if (length == 0) {
677 rc = 0;
678 break;
679 }
680
681 if (block_size == 0) {
682 rc = -EPROTO;
683 may_continue--;
684 udelay(1);
685 continue;
686 }
687
688 prev_block_size = block_size;
689 memcpy(buffer, data + done, block_size);
690
691 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
692 if (rc)
693 break;
694 }
695
696 if (!rc && length != 0)
697 rc = -EREMOTEIO;
698
699 kfree(buffer);
700
701 return rc;
702 }
703
704 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
705 {
706 struct mwl8k_priv *priv = hw->priv;
707 const struct firmware *fw = priv->fw_ucode;
708 int rc;
709 int loops;
710
711 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
712 const struct firmware *helper = priv->fw_helper;
713
714 if (helper == NULL) {
715 printk(KERN_ERR "%s: helper image needed but none "
716 "given\n", pci_name(priv->pdev));
717 return -EINVAL;
718 }
719
720 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
721 if (rc) {
722 printk(KERN_ERR "%s: unable to load firmware "
723 "helper image\n", pci_name(priv->pdev));
724 return rc;
725 }
726 msleep(20);
727
728 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
729 } else {
730 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
731 }
732
733 if (rc) {
734 printk(KERN_ERR "%s: unable to load firmware image\n",
735 pci_name(priv->pdev));
736 return rc;
737 }
738
739 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
740
741 loops = 500000;
742 do {
743 u32 ready_code;
744
745 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
746 if (ready_code == MWL8K_FWAP_READY) {
747 priv->ap_fw = true;
748 break;
749 } else if (ready_code == MWL8K_FWSTA_READY) {
750 priv->ap_fw = false;
751 break;
752 }
753
754 cond_resched();
755 udelay(1);
756 } while (--loops);
757
758 return loops ? 0 : -ETIMEDOUT;
759 }
760
761
762 /* DMA header used by firmware and hardware. */
763 struct mwl8k_dma_data {
764 __le16 fwlen;
765 struct ieee80211_hdr wh;
766 char data[0];
767 } __packed;
768
769 /* Routines to add/remove DMA header from skb. */
770 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
771 {
772 struct mwl8k_dma_data *tr;
773 int hdrlen;
774
775 tr = (struct mwl8k_dma_data *)skb->data;
776 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
777
778 if (hdrlen != sizeof(tr->wh)) {
779 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
780 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
781 *((__le16 *)(tr->data - 2)) = qos;
782 } else {
783 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
784 }
785 }
786
787 if (hdrlen != sizeof(*tr))
788 skb_pull(skb, sizeof(*tr) - hdrlen);
789 }
790
791 #define REDUCED_TX_HEADROOM 8
792
793 static void
794 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
795 int head_pad, int tail_pad)
796 {
797 struct ieee80211_hdr *wh;
798 int hdrlen;
799 int reqd_hdrlen;
800 struct mwl8k_dma_data *tr;
801
802 /*
803 * Add a firmware DMA header; the firmware requires that we
804 * present a 2-byte payload length followed by a 4-address
805 * header (without QoS field), followed (optionally) by any
806 * WEP/ExtIV header (but only filled in for CCMP).
807 */
808 wh = (struct ieee80211_hdr *)skb->data;
809
810 hdrlen = ieee80211_hdrlen(wh->frame_control);
811
812 /*
813 * Check if skb_resize is required because of
814 * tx_headroom adjustment.
815 */
816 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
817 + REDUCED_TX_HEADROOM))) {
818 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
819
820 wiphy_err(priv->hw->wiphy,
821 "Failed to reallocate TX buffer\n");
822 return;
823 }
824 skb->truesize += REDUCED_TX_HEADROOM;
825 }
826
827 reqd_hdrlen = sizeof(*tr) + head_pad;
828
829 if (hdrlen != reqd_hdrlen)
830 skb_push(skb, reqd_hdrlen - hdrlen);
831
832 if (ieee80211_is_data_qos(wh->frame_control))
833 hdrlen -= IEEE80211_QOS_CTL_LEN;
834
835 tr = (struct mwl8k_dma_data *)skb->data;
836 if (wh != &tr->wh)
837 memmove(&tr->wh, wh, hdrlen);
838 if (hdrlen != sizeof(tr->wh))
839 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
840
841 /*
842 * Firmware length is the length of the fully formed "802.11
843 * payload". That is, everything except for the 802.11 header.
844 * This includes all crypto material including the MIC.
845 */
846 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
847 }
848
849 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
850 struct sk_buff *skb)
851 {
852 struct ieee80211_hdr *wh;
853 struct ieee80211_tx_info *tx_info;
854 struct ieee80211_key_conf *key_conf;
855 int data_pad;
856 int head_pad = 0;
857
858 wh = (struct ieee80211_hdr *)skb->data;
859
860 tx_info = IEEE80211_SKB_CB(skb);
861
862 key_conf = NULL;
863 if (ieee80211_is_data(wh->frame_control))
864 key_conf = tx_info->control.hw_key;
865
866 /*
867 * Make sure the packet header is in the DMA header format (4-address
868 * without QoS), and add head & tail padding when HW crypto is enabled.
869 *
870 * We have the following trailer padding requirements:
871 * - WEP: 4 trailer bytes (ICV)
872 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
873 * - CCMP: 8 trailer bytes (MIC)
874 */
875 data_pad = 0;
876 if (key_conf != NULL) {
877 head_pad = key_conf->iv_len;
878 switch (key_conf->cipher) {
879 case WLAN_CIPHER_SUITE_WEP40:
880 case WLAN_CIPHER_SUITE_WEP104:
881 data_pad = 4;
882 break;
883 case WLAN_CIPHER_SUITE_TKIP:
884 data_pad = 12;
885 break;
886 case WLAN_CIPHER_SUITE_CCMP:
887 data_pad = 8;
888 break;
889 }
890 }
891 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
892 }
893
894 /*
895 * Packet reception for 88w8366 AP firmware.
896 */
897 struct mwl8k_rxd_8366_ap {
898 __le16 pkt_len;
899 __u8 sq2;
900 __u8 rate;
901 __le32 pkt_phys_addr;
902 __le32 next_rxd_phys_addr;
903 __le16 qos_control;
904 __le16 htsig2;
905 __le32 hw_rssi_info;
906 __le32 hw_noise_floor_info;
907 __u8 noise_floor;
908 __u8 pad0[3];
909 __u8 rssi;
910 __u8 rx_status;
911 __u8 channel;
912 __u8 rx_ctrl;
913 } __packed;
914
915 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
916 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
917 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
918
919 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
920
921 /* 8366 AP rx_status bits */
922 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
923 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
924 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
925 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
926 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
927
928 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
929 {
930 struct mwl8k_rxd_8366_ap *rxd = _rxd;
931
932 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
933 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
934 }
935
936 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
937 {
938 struct mwl8k_rxd_8366_ap *rxd = _rxd;
939
940 rxd->pkt_len = cpu_to_le16(len);
941 rxd->pkt_phys_addr = cpu_to_le32(addr);
942 wmb();
943 rxd->rx_ctrl = 0;
944 }
945
946 static int
947 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
948 __le16 *qos, s8 *noise)
949 {
950 struct mwl8k_rxd_8366_ap *rxd = _rxd;
951
952 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
953 return -1;
954 rmb();
955
956 memset(status, 0, sizeof(*status));
957
958 status->signal = -rxd->rssi;
959 *noise = -rxd->noise_floor;
960
961 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
962 status->flag |= RX_FLAG_HT;
963 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
964 status->flag |= RX_FLAG_40MHZ;
965 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
966 } else {
967 int i;
968
969 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
970 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
971 status->rate_idx = i;
972 break;
973 }
974 }
975 }
976
977 if (rxd->channel > 14) {
978 status->band = IEEE80211_BAND_5GHZ;
979 if (!(status->flag & RX_FLAG_HT))
980 status->rate_idx -= 5;
981 } else {
982 status->band = IEEE80211_BAND_2GHZ;
983 }
984 status->freq = ieee80211_channel_to_frequency(rxd->channel,
985 status->band);
986
987 *qos = rxd->qos_control;
988
989 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
990 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
991 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
992 status->flag |= RX_FLAG_MMIC_ERROR;
993
994 return le16_to_cpu(rxd->pkt_len);
995 }
996
997 static struct rxd_ops rxd_8366_ap_ops = {
998 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
999 .rxd_init = mwl8k_rxd_8366_ap_init,
1000 .rxd_refill = mwl8k_rxd_8366_ap_refill,
1001 .rxd_process = mwl8k_rxd_8366_ap_process,
1002 };
1003
1004 /*
1005 * Packet reception for STA firmware.
1006 */
1007 struct mwl8k_rxd_sta {
1008 __le16 pkt_len;
1009 __u8 link_quality;
1010 __u8 noise_level;
1011 __le32 pkt_phys_addr;
1012 __le32 next_rxd_phys_addr;
1013 __le16 qos_control;
1014 __le16 rate_info;
1015 __le32 pad0[4];
1016 __u8 rssi;
1017 __u8 channel;
1018 __le16 pad1;
1019 __u8 rx_ctrl;
1020 __u8 rx_status;
1021 __u8 pad2[2];
1022 } __packed;
1023
1024 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1025 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1026 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1027 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1028 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1029 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1030
1031 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1032 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1033 /* ICV=0 or MIC=1 */
1034 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1035 /* Key is uploaded only in failure case */
1036 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1037
1038 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1039 {
1040 struct mwl8k_rxd_sta *rxd = _rxd;
1041
1042 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1043 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1044 }
1045
1046 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1047 {
1048 struct mwl8k_rxd_sta *rxd = _rxd;
1049
1050 rxd->pkt_len = cpu_to_le16(len);
1051 rxd->pkt_phys_addr = cpu_to_le32(addr);
1052 wmb();
1053 rxd->rx_ctrl = 0;
1054 }
1055
1056 static int
1057 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1058 __le16 *qos, s8 *noise)
1059 {
1060 struct mwl8k_rxd_sta *rxd = _rxd;
1061 u16 rate_info;
1062
1063 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1064 return -1;
1065 rmb();
1066
1067 rate_info = le16_to_cpu(rxd->rate_info);
1068
1069 memset(status, 0, sizeof(*status));
1070
1071 status->signal = -rxd->rssi;
1072 *noise = -rxd->noise_level;
1073 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1074 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1075
1076 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1077 status->flag |= RX_FLAG_SHORTPRE;
1078 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1079 status->flag |= RX_FLAG_40MHZ;
1080 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1081 status->flag |= RX_FLAG_SHORT_GI;
1082 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1083 status->flag |= RX_FLAG_HT;
1084
1085 if (rxd->channel > 14) {
1086 status->band = IEEE80211_BAND_5GHZ;
1087 if (!(status->flag & RX_FLAG_HT))
1088 status->rate_idx -= 5;
1089 } else {
1090 status->band = IEEE80211_BAND_2GHZ;
1091 }
1092 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1093 status->band);
1094
1095 *qos = rxd->qos_control;
1096 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1097 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1098 status->flag |= RX_FLAG_MMIC_ERROR;
1099
1100 return le16_to_cpu(rxd->pkt_len);
1101 }
1102
1103 static struct rxd_ops rxd_sta_ops = {
1104 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1105 .rxd_init = mwl8k_rxd_sta_init,
1106 .rxd_refill = mwl8k_rxd_sta_refill,
1107 .rxd_process = mwl8k_rxd_sta_process,
1108 };
1109
1110
1111 #define MWL8K_RX_DESCS 256
1112 #define MWL8K_RX_MAXSZ 3800
1113
1114 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1115 {
1116 struct mwl8k_priv *priv = hw->priv;
1117 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1118 int size;
1119 int i;
1120
1121 rxq->rxd_count = 0;
1122 rxq->head = 0;
1123 rxq->tail = 0;
1124
1125 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1126
1127 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1128 if (rxq->rxd == NULL) {
1129 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1130 return -ENOMEM;
1131 }
1132 memset(rxq->rxd, 0, size);
1133
1134 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1135 if (rxq->buf == NULL) {
1136 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1137 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1138 return -ENOMEM;
1139 }
1140
1141 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1142 int desc_size;
1143 void *rxd;
1144 int nexti;
1145 dma_addr_t next_dma_addr;
1146
1147 desc_size = priv->rxd_ops->rxd_size;
1148 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1149
1150 nexti = i + 1;
1151 if (nexti == MWL8K_RX_DESCS)
1152 nexti = 0;
1153 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1154
1155 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1156 }
1157
1158 return 0;
1159 }
1160
1161 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1162 {
1163 struct mwl8k_priv *priv = hw->priv;
1164 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1165 int refilled;
1166
1167 refilled = 0;
1168 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1169 struct sk_buff *skb;
1170 dma_addr_t addr;
1171 int rx;
1172 void *rxd;
1173
1174 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1175 if (skb == NULL)
1176 break;
1177
1178 addr = pci_map_single(priv->pdev, skb->data,
1179 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1180
1181 rxq->rxd_count++;
1182 rx = rxq->tail++;
1183 if (rxq->tail == MWL8K_RX_DESCS)
1184 rxq->tail = 0;
1185 rxq->buf[rx].skb = skb;
1186 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1187
1188 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1189 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1190
1191 refilled++;
1192 }
1193
1194 return refilled;
1195 }
1196
1197 /* Must be called only when the card's reception is completely halted */
1198 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1199 {
1200 struct mwl8k_priv *priv = hw->priv;
1201 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1202 int i;
1203
1204 if (rxq->rxd == NULL)
1205 return;
1206
1207 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1208 if (rxq->buf[i].skb != NULL) {
1209 pci_unmap_single(priv->pdev,
1210 dma_unmap_addr(&rxq->buf[i], dma),
1211 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1212 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1213
1214 kfree_skb(rxq->buf[i].skb);
1215 rxq->buf[i].skb = NULL;
1216 }
1217 }
1218
1219 kfree(rxq->buf);
1220 rxq->buf = NULL;
1221
1222 pci_free_consistent(priv->pdev,
1223 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1224 rxq->rxd, rxq->rxd_dma);
1225 rxq->rxd = NULL;
1226 }
1227
1228
1229 /*
1230 * Scan a list of BSSIDs to process for finalize join.
1231 * Allows for extension to process multiple BSSIDs.
1232 */
1233 static inline int
1234 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1235 {
1236 return priv->capture_beacon &&
1237 ieee80211_is_beacon(wh->frame_control) &&
1238 ether_addr_equal(wh->addr3, priv->capture_bssid);
1239 }
1240
1241 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1242 struct sk_buff *skb)
1243 {
1244 struct mwl8k_priv *priv = hw->priv;
1245
1246 priv->capture_beacon = false;
1247 memset(priv->capture_bssid, 0, ETH_ALEN);
1248
1249 /*
1250 * Use GFP_ATOMIC as rxq_process is called from
1251 * the primary interrupt handler, memory allocation call
1252 * must not sleep.
1253 */
1254 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1255 if (priv->beacon_skb != NULL)
1256 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1257 }
1258
1259 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1260 u8 *bssid)
1261 {
1262 struct mwl8k_vif *mwl8k_vif;
1263
1264 list_for_each_entry(mwl8k_vif,
1265 vif_list, list) {
1266 if (memcmp(bssid, mwl8k_vif->bssid,
1267 ETH_ALEN) == 0)
1268 return mwl8k_vif;
1269 }
1270
1271 return NULL;
1272 }
1273
1274 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1275 {
1276 struct mwl8k_priv *priv = hw->priv;
1277 struct mwl8k_vif *mwl8k_vif = NULL;
1278 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1279 int processed;
1280
1281 processed = 0;
1282 while (rxq->rxd_count && limit--) {
1283 struct sk_buff *skb;
1284 void *rxd;
1285 int pkt_len;
1286 struct ieee80211_rx_status status;
1287 struct ieee80211_hdr *wh;
1288 __le16 qos;
1289
1290 skb = rxq->buf[rxq->head].skb;
1291 if (skb == NULL)
1292 break;
1293
1294 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1295
1296 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1297 &priv->noise);
1298 if (pkt_len < 0)
1299 break;
1300
1301 rxq->buf[rxq->head].skb = NULL;
1302
1303 pci_unmap_single(priv->pdev,
1304 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1305 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1306 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1307
1308 rxq->head++;
1309 if (rxq->head == MWL8K_RX_DESCS)
1310 rxq->head = 0;
1311
1312 rxq->rxd_count--;
1313
1314 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1315
1316 /*
1317 * Check for a pending join operation. Save a
1318 * copy of the beacon and schedule a tasklet to
1319 * send a FINALIZE_JOIN command to the firmware.
1320 */
1321 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1322 mwl8k_save_beacon(hw, skb);
1323
1324 if (ieee80211_has_protected(wh->frame_control)) {
1325
1326 /* Check if hw crypto has been enabled for
1327 * this bss. If yes, set the status flags
1328 * accordingly
1329 */
1330 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1331 wh->addr1);
1332
1333 if (mwl8k_vif != NULL &&
1334 mwl8k_vif->is_hw_crypto_enabled) {
1335 /*
1336 * When MMIC ERROR is encountered
1337 * by the firmware, payload is
1338 * dropped and only 32 bytes of
1339 * mwl8k Firmware header is sent
1340 * to the host.
1341 *
1342 * We need to add four bytes of
1343 * key information. In it
1344 * MAC80211 expects keyidx set to
1345 * 0 for triggering Counter
1346 * Measure of MMIC failure.
1347 */
1348 if (status.flag & RX_FLAG_MMIC_ERROR) {
1349 struct mwl8k_dma_data *tr;
1350 tr = (struct mwl8k_dma_data *)skb->data;
1351 memset((void *)&(tr->data), 0, 4);
1352 pkt_len += 4;
1353 }
1354
1355 if (!ieee80211_is_auth(wh->frame_control))
1356 status.flag |= RX_FLAG_IV_STRIPPED |
1357 RX_FLAG_DECRYPTED |
1358 RX_FLAG_MMIC_STRIPPED;
1359 }
1360 }
1361
1362 skb_put(skb, pkt_len);
1363 mwl8k_remove_dma_header(skb, qos);
1364 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1365 ieee80211_rx_irqsafe(hw, skb);
1366
1367 processed++;
1368 }
1369
1370 return processed;
1371 }
1372
1373
1374 /*
1375 * Packet transmission.
1376 */
1377
1378 #define MWL8K_TXD_STATUS_OK 0x00000001
1379 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1380 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1381 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1382 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1383
1384 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1385 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1386 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1387 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1388 #define MWL8K_QOS_EOSP 0x0010
1389
1390 struct mwl8k_tx_desc {
1391 __le32 status;
1392 __u8 data_rate;
1393 __u8 tx_priority;
1394 __le16 qos_control;
1395 __le32 pkt_phys_addr;
1396 __le16 pkt_len;
1397 __u8 dest_MAC_addr[ETH_ALEN];
1398 __le32 next_txd_phys_addr;
1399 __le32 timestamp;
1400 __le16 rate_info;
1401 __u8 peer_id;
1402 __u8 tx_frag_cnt;
1403 } __packed;
1404
1405 #define MWL8K_TX_DESCS 128
1406
1407 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1408 {
1409 struct mwl8k_priv *priv = hw->priv;
1410 struct mwl8k_tx_queue *txq = priv->txq + index;
1411 int size;
1412 int i;
1413
1414 txq->len = 0;
1415 txq->head = 0;
1416 txq->tail = 0;
1417
1418 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1419
1420 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1421 if (txq->txd == NULL) {
1422 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1423 return -ENOMEM;
1424 }
1425 memset(txq->txd, 0, size);
1426
1427 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1428 if (txq->skb == NULL) {
1429 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1430 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1431 return -ENOMEM;
1432 }
1433
1434 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1435 struct mwl8k_tx_desc *tx_desc;
1436 int nexti;
1437
1438 tx_desc = txq->txd + i;
1439 nexti = (i + 1) % MWL8K_TX_DESCS;
1440
1441 tx_desc->status = 0;
1442 tx_desc->next_txd_phys_addr =
1443 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1444 }
1445
1446 return 0;
1447 }
1448
1449 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1450 {
1451 iowrite32(MWL8K_H2A_INT_PPA_READY,
1452 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1453 iowrite32(MWL8K_H2A_INT_DUMMY,
1454 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1455 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1456 }
1457
1458 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1459 {
1460 struct mwl8k_priv *priv = hw->priv;
1461 int i;
1462
1463 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1464 struct mwl8k_tx_queue *txq = priv->txq + i;
1465 int fw_owned = 0;
1466 int drv_owned = 0;
1467 int unused = 0;
1468 int desc;
1469
1470 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1471 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1472 u32 status;
1473
1474 status = le32_to_cpu(tx_desc->status);
1475 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1476 fw_owned++;
1477 else
1478 drv_owned++;
1479
1480 if (tx_desc->pkt_len == 0)
1481 unused++;
1482 }
1483
1484 wiphy_err(hw->wiphy,
1485 "txq[%d] len=%d head=%d tail=%d "
1486 "fw_owned=%d drv_owned=%d unused=%d\n",
1487 i,
1488 txq->len, txq->head, txq->tail,
1489 fw_owned, drv_owned, unused);
1490 }
1491 }
1492
1493 /*
1494 * Must be called with priv->fw_mutex held and tx queues stopped.
1495 */
1496 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1497
1498 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1499 {
1500 struct mwl8k_priv *priv = hw->priv;
1501 DECLARE_COMPLETION_ONSTACK(tx_wait);
1502 int retry;
1503 int rc;
1504
1505 might_sleep();
1506
1507 /* Since fw restart is in progress, allow only the firmware
1508 * commands from the restart code and block the other
1509 * commands since they are going to fail in any case since
1510 * the firmware has crashed
1511 */
1512 if (priv->hw_restart_in_progress) {
1513 if (priv->hw_restart_owner == current)
1514 return 0;
1515 else
1516 return -EBUSY;
1517 }
1518
1519 /*
1520 * The TX queues are stopped at this point, so this test
1521 * doesn't need to take ->tx_lock.
1522 */
1523 if (!priv->pending_tx_pkts)
1524 return 0;
1525
1526 retry = 0;
1527 rc = 0;
1528
1529 spin_lock_bh(&priv->tx_lock);
1530 priv->tx_wait = &tx_wait;
1531 while (!rc) {
1532 int oldcount;
1533 unsigned long timeout;
1534
1535 oldcount = priv->pending_tx_pkts;
1536
1537 spin_unlock_bh(&priv->tx_lock);
1538 timeout = wait_for_completion_timeout(&tx_wait,
1539 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1540 spin_lock_bh(&priv->tx_lock);
1541
1542 if (timeout) {
1543 WARN_ON(priv->pending_tx_pkts);
1544 if (retry)
1545 wiphy_notice(hw->wiphy, "tx rings drained\n");
1546 break;
1547 }
1548
1549 if (priv->pending_tx_pkts < oldcount) {
1550 wiphy_notice(hw->wiphy,
1551 "waiting for tx rings to drain (%d -> %d pkts)\n",
1552 oldcount, priv->pending_tx_pkts);
1553 retry = 1;
1554 continue;
1555 }
1556
1557 priv->tx_wait = NULL;
1558
1559 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1560 MWL8K_TX_WAIT_TIMEOUT_MS);
1561 mwl8k_dump_tx_rings(hw);
1562 priv->hw_restart_in_progress = true;
1563 ieee80211_queue_work(hw, &priv->fw_reload);
1564
1565 rc = -ETIMEDOUT;
1566 }
1567 spin_unlock_bh(&priv->tx_lock);
1568
1569 return rc;
1570 }
1571
1572 #define MWL8K_TXD_SUCCESS(status) \
1573 ((status) & (MWL8K_TXD_STATUS_OK | \
1574 MWL8K_TXD_STATUS_OK_RETRY | \
1575 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1576
1577 static int mwl8k_tid_queue_mapping(u8 tid)
1578 {
1579 BUG_ON(tid > 7);
1580
1581 switch (tid) {
1582 case 0:
1583 case 3:
1584 return IEEE80211_AC_BE;
1585 break;
1586 case 1:
1587 case 2:
1588 return IEEE80211_AC_BK;
1589 break;
1590 case 4:
1591 case 5:
1592 return IEEE80211_AC_VI;
1593 break;
1594 case 6:
1595 case 7:
1596 return IEEE80211_AC_VO;
1597 break;
1598 default:
1599 return -1;
1600 break;
1601 }
1602 }
1603
1604 /* The firmware will fill in the rate information
1605 * for each packet that gets queued in the hardware
1606 * and these macros will interpret that info.
1607 */
1608
1609 #define RI_FORMAT(a) (a & 0x0001)
1610 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1611
1612 static int
1613 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1614 {
1615 struct mwl8k_priv *priv = hw->priv;
1616 struct mwl8k_tx_queue *txq = priv->txq + index;
1617 int processed;
1618
1619 processed = 0;
1620 while (txq->len > 0 && limit--) {
1621 int tx;
1622 struct mwl8k_tx_desc *tx_desc;
1623 unsigned long addr;
1624 int size;
1625 struct sk_buff *skb;
1626 struct ieee80211_tx_info *info;
1627 u32 status;
1628 struct ieee80211_sta *sta;
1629 struct mwl8k_sta *sta_info = NULL;
1630 u16 rate_info;
1631 struct ieee80211_hdr *wh;
1632
1633 tx = txq->head;
1634 tx_desc = txq->txd + tx;
1635
1636 status = le32_to_cpu(tx_desc->status);
1637
1638 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1639 if (!force)
1640 break;
1641 tx_desc->status &=
1642 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1643 }
1644
1645 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1646 BUG_ON(txq->len == 0);
1647 txq->len--;
1648 priv->pending_tx_pkts--;
1649
1650 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1651 size = le16_to_cpu(tx_desc->pkt_len);
1652 skb = txq->skb[tx];
1653 txq->skb[tx] = NULL;
1654
1655 BUG_ON(skb == NULL);
1656 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1657
1658 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1659
1660 wh = (struct ieee80211_hdr *) skb->data;
1661
1662 /* Mark descriptor as unused */
1663 tx_desc->pkt_phys_addr = 0;
1664 tx_desc->pkt_len = 0;
1665
1666 info = IEEE80211_SKB_CB(skb);
1667 if (ieee80211_is_data(wh->frame_control)) {
1668 rcu_read_lock();
1669 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1670 wh->addr2);
1671 if (sta) {
1672 sta_info = MWL8K_STA(sta);
1673 BUG_ON(sta_info == NULL);
1674 rate_info = le16_to_cpu(tx_desc->rate_info);
1675 /* If rate is < 6.5 Mpbs for an ht station
1676 * do not form an ampdu. If the station is a
1677 * legacy station (format = 0), do not form an
1678 * ampdu
1679 */
1680 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1681 RI_FORMAT(rate_info) == 0) {
1682 sta_info->is_ampdu_allowed = false;
1683 } else {
1684 sta_info->is_ampdu_allowed = true;
1685 }
1686 }
1687 rcu_read_unlock();
1688 }
1689
1690 ieee80211_tx_info_clear_status(info);
1691
1692 /* Rate control is happening in the firmware.
1693 * Ensure no tx rate is being reported.
1694 */
1695 info->status.rates[0].idx = -1;
1696 info->status.rates[0].count = 1;
1697
1698 if (MWL8K_TXD_SUCCESS(status))
1699 info->flags |= IEEE80211_TX_STAT_ACK;
1700
1701 ieee80211_tx_status_irqsafe(hw, skb);
1702
1703 processed++;
1704 }
1705
1706 return processed;
1707 }
1708
1709 /* must be called only when the card's transmit is completely halted */
1710 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1711 {
1712 struct mwl8k_priv *priv = hw->priv;
1713 struct mwl8k_tx_queue *txq = priv->txq + index;
1714
1715 if (txq->txd == NULL)
1716 return;
1717
1718 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1719
1720 kfree(txq->skb);
1721 txq->skb = NULL;
1722
1723 pci_free_consistent(priv->pdev,
1724 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1725 txq->txd, txq->txd_dma);
1726 txq->txd = NULL;
1727 }
1728
1729 /* caller must hold priv->stream_lock when calling the stream functions */
1730 static struct mwl8k_ampdu_stream *
1731 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1732 {
1733 struct mwl8k_ampdu_stream *stream;
1734 struct mwl8k_priv *priv = hw->priv;
1735 int i;
1736
1737 for (i = 0; i < priv->num_ampdu_queues; i++) {
1738 stream = &priv->ampdu[i];
1739 if (stream->state == AMPDU_NO_STREAM) {
1740 stream->sta = sta;
1741 stream->state = AMPDU_STREAM_NEW;
1742 stream->tid = tid;
1743 stream->idx = i;
1744 stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1745 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1746 sta->addr, tid);
1747 return stream;
1748 }
1749 }
1750 return NULL;
1751 }
1752
1753 static int
1754 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1755 {
1756 int ret;
1757
1758 /* if the stream has already been started, don't start it again */
1759 if (stream->state != AMPDU_STREAM_NEW)
1760 return 0;
1761 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1762 if (ret)
1763 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1764 "%d\n", stream->sta->addr, stream->tid, ret);
1765 else
1766 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1767 stream->sta->addr, stream->tid);
1768 return ret;
1769 }
1770
1771 static void
1772 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1773 {
1774 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1775 stream->tid);
1776 memset(stream, 0, sizeof(*stream));
1777 }
1778
1779 static struct mwl8k_ampdu_stream *
1780 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1781 {
1782 struct mwl8k_priv *priv = hw->priv;
1783 int i;
1784
1785 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1786 struct mwl8k_ampdu_stream *stream;
1787 stream = &priv->ampdu[i];
1788 if (stream->state == AMPDU_NO_STREAM)
1789 continue;
1790 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1791 stream->tid == tid)
1792 return stream;
1793 }
1794 return NULL;
1795 }
1796
1797 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1798 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1799 {
1800 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1801 struct tx_traffic_info *tx_stats;
1802
1803 BUG_ON(tid >= MWL8K_MAX_TID);
1804 tx_stats = &sta_info->tx_stats[tid];
1805
1806 return sta_info->is_ampdu_allowed &&
1807 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1808 }
1809
1810 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1811 {
1812 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1813 struct tx_traffic_info *tx_stats;
1814
1815 BUG_ON(tid >= MWL8K_MAX_TID);
1816 tx_stats = &sta_info->tx_stats[tid];
1817
1818 if (tx_stats->start_time == 0)
1819 tx_stats->start_time = jiffies;
1820
1821 /* reset the packet count after each second elapses. If the number of
1822 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1823 * an ampdu stream to be started.
1824 */
1825 if (jiffies - tx_stats->start_time > HZ) {
1826 tx_stats->pkts = 0;
1827 tx_stats->start_time = 0;
1828 } else
1829 tx_stats->pkts++;
1830 }
1831
1832 static void
1833 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1834 {
1835 struct mwl8k_priv *priv = hw->priv;
1836 struct ieee80211_tx_info *tx_info;
1837 struct mwl8k_vif *mwl8k_vif;
1838 struct ieee80211_sta *sta;
1839 struct ieee80211_hdr *wh;
1840 struct mwl8k_tx_queue *txq;
1841 struct mwl8k_tx_desc *tx;
1842 dma_addr_t dma;
1843 u32 txstatus;
1844 u8 txdatarate;
1845 u16 qos;
1846 int txpriority;
1847 u8 tid = 0;
1848 struct mwl8k_ampdu_stream *stream = NULL;
1849 bool start_ba_session = false;
1850 bool mgmtframe = false;
1851 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1852
1853 wh = (struct ieee80211_hdr *)skb->data;
1854 if (ieee80211_is_data_qos(wh->frame_control))
1855 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1856 else
1857 qos = 0;
1858
1859 if (ieee80211_is_mgmt(wh->frame_control))
1860 mgmtframe = true;
1861
1862 if (priv->ap_fw)
1863 mwl8k_encapsulate_tx_frame(priv, skb);
1864 else
1865 mwl8k_add_dma_header(priv, skb, 0, 0);
1866
1867 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1868
1869 tx_info = IEEE80211_SKB_CB(skb);
1870 sta = tx_info->control.sta;
1871 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1872
1873 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1874 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1875 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1876 mwl8k_vif->seqno += 0x10;
1877 }
1878
1879 /* Setup firmware control bit fields for each frame type. */
1880 txstatus = 0;
1881 txdatarate = 0;
1882 if (ieee80211_is_mgmt(wh->frame_control) ||
1883 ieee80211_is_ctl(wh->frame_control)) {
1884 txdatarate = 0;
1885 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1886 } else if (ieee80211_is_data(wh->frame_control)) {
1887 txdatarate = 1;
1888 if (is_multicast_ether_addr(wh->addr1))
1889 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1890
1891 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1892 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1893 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1894 else
1895 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1896 }
1897
1898 /* Queue ADDBA request in the respective data queue. While setting up
1899 * the ampdu stream, mac80211 queues further packets for that
1900 * particular ra/tid pair. However, packets piled up in the hardware
1901 * for that ra/tid pair will still go out. ADDBA request and the
1902 * related data packets going out from different queues asynchronously
1903 * will cause a shift in the receiver window which might result in
1904 * ampdu packets getting dropped at the receiver after the stream has
1905 * been setup.
1906 */
1907 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1908 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1909 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1910 priv->ap_fw)) {
1911 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1912 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1913 index = mwl8k_tid_queue_mapping(tid);
1914 }
1915
1916 txpriority = index;
1917
1918 if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1919 && skb->protocol != cpu_to_be16(ETH_P_PAE)
1920 && ieee80211_is_data_qos(wh->frame_control)) {
1921 tid = qos & 0xf;
1922 mwl8k_tx_count_packet(sta, tid);
1923 spin_lock(&priv->stream_lock);
1924 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1925 if (stream != NULL) {
1926 if (stream->state == AMPDU_STREAM_ACTIVE) {
1927 txpriority = stream->txq_idx;
1928 index = stream->txq_idx;
1929 } else if (stream->state == AMPDU_STREAM_NEW) {
1930 /* We get here if the driver sends us packets
1931 * after we've initiated a stream, but before
1932 * our ampdu_action routine has been called
1933 * with IEEE80211_AMPDU_TX_START to get the SSN
1934 * for the ADDBA request. So this packet can
1935 * go out with no risk of sequence number
1936 * mismatch. No special handling is required.
1937 */
1938 } else {
1939 /* Drop packets that would go out after the
1940 * ADDBA request was sent but before the ADDBA
1941 * response is received. If we don't do this,
1942 * the recipient would probably receive it
1943 * after the ADDBA request with SSN 0. This
1944 * will cause the recipient's BA receive window
1945 * to shift, which would cause the subsequent
1946 * packets in the BA stream to be discarded.
1947 * mac80211 queues our packets for us in this
1948 * case, so this is really just a safety check.
1949 */
1950 wiphy_warn(hw->wiphy,
1951 "Cannot send packet while ADDBA "
1952 "dialog is underway.\n");
1953 spin_unlock(&priv->stream_lock);
1954 dev_kfree_skb(skb);
1955 return;
1956 }
1957 } else {
1958 /* Defer calling mwl8k_start_stream so that the current
1959 * skb can go out before the ADDBA request. This
1960 * prevents sequence number mismatch at the recepient
1961 * as described above.
1962 */
1963 if (mwl8k_ampdu_allowed(sta, tid)) {
1964 stream = mwl8k_add_stream(hw, sta, tid);
1965 if (stream != NULL)
1966 start_ba_session = true;
1967 }
1968 }
1969 spin_unlock(&priv->stream_lock);
1970 }
1971
1972 dma = pci_map_single(priv->pdev, skb->data,
1973 skb->len, PCI_DMA_TODEVICE);
1974
1975 if (pci_dma_mapping_error(priv->pdev, dma)) {
1976 wiphy_debug(hw->wiphy,
1977 "failed to dma map skb, dropping TX frame.\n");
1978 if (start_ba_session) {
1979 spin_lock(&priv->stream_lock);
1980 mwl8k_remove_stream(hw, stream);
1981 spin_unlock(&priv->stream_lock);
1982 }
1983 dev_kfree_skb(skb);
1984 return;
1985 }
1986
1987 spin_lock_bh(&priv->tx_lock);
1988
1989 txq = priv->txq + index;
1990
1991 /* Mgmt frames that go out frequently are probe
1992 * responses. Other mgmt frames got out relatively
1993 * infrequently. Hence reserve 2 buffers so that
1994 * other mgmt frames do not get dropped due to an
1995 * already queued probe response in one of the
1996 * reserved buffers.
1997 */
1998
1999 if (txq->len >= MWL8K_TX_DESCS - 2) {
2000 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2001 if (start_ba_session) {
2002 spin_lock(&priv->stream_lock);
2003 mwl8k_remove_stream(hw, stream);
2004 spin_unlock(&priv->stream_lock);
2005 }
2006 spin_unlock_bh(&priv->tx_lock);
2007 dev_kfree_skb(skb);
2008 return;
2009 }
2010 }
2011
2012 BUG_ON(txq->skb[txq->tail] != NULL);
2013 txq->skb[txq->tail] = skb;
2014
2015 tx = txq->txd + txq->tail;
2016 tx->data_rate = txdatarate;
2017 tx->tx_priority = txpriority;
2018 tx->qos_control = cpu_to_le16(qos);
2019 tx->pkt_phys_addr = cpu_to_le32(dma);
2020 tx->pkt_len = cpu_to_le16(skb->len);
2021 tx->rate_info = 0;
2022 if (!priv->ap_fw && tx_info->control.sta != NULL)
2023 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2024 else
2025 tx->peer_id = 0;
2026
2027 if (priv->ap_fw)
2028 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2029 MWL8K_HW_TIMER_REGISTER));
2030
2031 wmb();
2032 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2033
2034 txq->len++;
2035 priv->pending_tx_pkts++;
2036
2037 txq->tail++;
2038 if (txq->tail == MWL8K_TX_DESCS)
2039 txq->tail = 0;
2040
2041 mwl8k_tx_start(priv);
2042
2043 spin_unlock_bh(&priv->tx_lock);
2044
2045 /* Initiate the ampdu session here */
2046 if (start_ba_session) {
2047 spin_lock(&priv->stream_lock);
2048 if (mwl8k_start_stream(hw, stream))
2049 mwl8k_remove_stream(hw, stream);
2050 spin_unlock(&priv->stream_lock);
2051 }
2052 }
2053
2054
2055 /*
2056 * Firmware access.
2057 *
2058 * We have the following requirements for issuing firmware commands:
2059 * - Some commands require that the packet transmit path is idle when
2060 * the command is issued. (For simplicity, we'll just quiesce the
2061 * transmit path for every command.)
2062 * - There are certain sequences of commands that need to be issued to
2063 * the hardware sequentially, with no other intervening commands.
2064 *
2065 * This leads to an implementation of a "firmware lock" as a mutex that
2066 * can be taken recursively, and which is taken by both the low-level
2067 * command submission function (mwl8k_post_cmd) as well as any users of
2068 * that function that require issuing of an atomic sequence of commands,
2069 * and quiesces the transmit path whenever it's taken.
2070 */
2071 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2072 {
2073 struct mwl8k_priv *priv = hw->priv;
2074
2075 if (priv->fw_mutex_owner != current) {
2076 int rc;
2077
2078 mutex_lock(&priv->fw_mutex);
2079 ieee80211_stop_queues(hw);
2080
2081 rc = mwl8k_tx_wait_empty(hw);
2082 if (rc) {
2083 if (!priv->hw_restart_in_progress)
2084 ieee80211_wake_queues(hw);
2085
2086 mutex_unlock(&priv->fw_mutex);
2087
2088 return rc;
2089 }
2090
2091 priv->fw_mutex_owner = current;
2092 }
2093
2094 priv->fw_mutex_depth++;
2095
2096 return 0;
2097 }
2098
2099 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2100 {
2101 struct mwl8k_priv *priv = hw->priv;
2102
2103 if (!--priv->fw_mutex_depth) {
2104 if (!priv->hw_restart_in_progress)
2105 ieee80211_wake_queues(hw);
2106
2107 priv->fw_mutex_owner = NULL;
2108 mutex_unlock(&priv->fw_mutex);
2109 }
2110 }
2111
2112
2113 /*
2114 * Command processing.
2115 */
2116
2117 /* Timeout firmware commands after 10s */
2118 #define MWL8K_CMD_TIMEOUT_MS 10000
2119
2120 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2121 {
2122 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2123 struct mwl8k_priv *priv = hw->priv;
2124 void __iomem *regs = priv->regs;
2125 dma_addr_t dma_addr;
2126 unsigned int dma_size;
2127 int rc;
2128 unsigned long timeout = 0;
2129 u8 buf[32];
2130
2131 cmd->result = (__force __le16) 0xffff;
2132 dma_size = le16_to_cpu(cmd->length);
2133 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2134 PCI_DMA_BIDIRECTIONAL);
2135 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2136 return -ENOMEM;
2137
2138 rc = mwl8k_fw_lock(hw);
2139 if (rc) {
2140 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2141 PCI_DMA_BIDIRECTIONAL);
2142 return rc;
2143 }
2144
2145 priv->hostcmd_wait = &cmd_wait;
2146 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2147 iowrite32(MWL8K_H2A_INT_DOORBELL,
2148 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2149 iowrite32(MWL8K_H2A_INT_DUMMY,
2150 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2151
2152 timeout = wait_for_completion_timeout(&cmd_wait,
2153 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2154
2155 priv->hostcmd_wait = NULL;
2156
2157 mwl8k_fw_unlock(hw);
2158
2159 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2160 PCI_DMA_BIDIRECTIONAL);
2161
2162 if (!timeout) {
2163 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2164 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2165 MWL8K_CMD_TIMEOUT_MS);
2166 rc = -ETIMEDOUT;
2167 } else {
2168 int ms;
2169
2170 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2171
2172 rc = cmd->result ? -EINVAL : 0;
2173 if (rc)
2174 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2175 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2176 le16_to_cpu(cmd->result));
2177 else if (ms > 2000)
2178 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2179 mwl8k_cmd_name(cmd->code,
2180 buf, sizeof(buf)),
2181 ms);
2182 }
2183
2184 return rc;
2185 }
2186
2187 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2188 struct ieee80211_vif *vif,
2189 struct mwl8k_cmd_pkt *cmd)
2190 {
2191 if (vif != NULL)
2192 cmd->macid = MWL8K_VIF(vif)->macid;
2193 return mwl8k_post_cmd(hw, cmd);
2194 }
2195
2196 /*
2197 * Setup code shared between STA and AP firmware images.
2198 */
2199 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2200 {
2201 struct mwl8k_priv *priv = hw->priv;
2202
2203 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2204 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2205
2206 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2207 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2208
2209 priv->band_24.band = IEEE80211_BAND_2GHZ;
2210 priv->band_24.channels = priv->channels_24;
2211 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2212 priv->band_24.bitrates = priv->rates_24;
2213 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2214
2215 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2216 }
2217
2218 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2219 {
2220 struct mwl8k_priv *priv = hw->priv;
2221
2222 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2223 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2224
2225 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2226 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2227
2228 priv->band_50.band = IEEE80211_BAND_5GHZ;
2229 priv->band_50.channels = priv->channels_50;
2230 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2231 priv->band_50.bitrates = priv->rates_50;
2232 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2233
2234 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2235 }
2236
2237 /*
2238 * CMD_GET_HW_SPEC (STA version).
2239 */
2240 struct mwl8k_cmd_get_hw_spec_sta {
2241 struct mwl8k_cmd_pkt header;
2242 __u8 hw_rev;
2243 __u8 host_interface;
2244 __le16 num_mcaddrs;
2245 __u8 perm_addr[ETH_ALEN];
2246 __le16 region_code;
2247 __le32 fw_rev;
2248 __le32 ps_cookie;
2249 __le32 caps;
2250 __u8 mcs_bitmap[16];
2251 __le32 rx_queue_ptr;
2252 __le32 num_tx_queues;
2253 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2254 __le32 caps2;
2255 __le32 num_tx_desc_per_queue;
2256 __le32 total_rxd;
2257 } __packed;
2258
2259 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2260 #define MWL8K_CAP_GREENFIELD 0x08000000
2261 #define MWL8K_CAP_AMPDU 0x04000000
2262 #define MWL8K_CAP_RX_STBC 0x01000000
2263 #define MWL8K_CAP_TX_STBC 0x00800000
2264 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2265 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2266 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2267 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2268 #define MWL8K_CAP_DELAY_BA 0x00003000
2269 #define MWL8K_CAP_MIMO 0x00000200
2270 #define MWL8K_CAP_40MHZ 0x00000100
2271 #define MWL8K_CAP_BAND_MASK 0x00000007
2272 #define MWL8K_CAP_5GHZ 0x00000004
2273 #define MWL8K_CAP_2GHZ4 0x00000001
2274
2275 static void
2276 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2277 struct ieee80211_supported_band *band, u32 cap)
2278 {
2279 int rx_streams;
2280 int tx_streams;
2281
2282 band->ht_cap.ht_supported = 1;
2283
2284 if (cap & MWL8K_CAP_MAX_AMSDU)
2285 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2286 if (cap & MWL8K_CAP_GREENFIELD)
2287 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2288 if (cap & MWL8K_CAP_AMPDU) {
2289 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2290 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2291 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2292 }
2293 if (cap & MWL8K_CAP_RX_STBC)
2294 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2295 if (cap & MWL8K_CAP_TX_STBC)
2296 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2297 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2298 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2299 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2300 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2301 if (cap & MWL8K_CAP_DELAY_BA)
2302 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2303 if (cap & MWL8K_CAP_40MHZ)
2304 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2305
2306 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2307 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2308
2309 band->ht_cap.mcs.rx_mask[0] = 0xff;
2310 if (rx_streams >= 2)
2311 band->ht_cap.mcs.rx_mask[1] = 0xff;
2312 if (rx_streams >= 3)
2313 band->ht_cap.mcs.rx_mask[2] = 0xff;
2314 band->ht_cap.mcs.rx_mask[4] = 0x01;
2315 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2316
2317 if (rx_streams != tx_streams) {
2318 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2319 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2320 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2321 }
2322 }
2323
2324 static void
2325 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2326 {
2327 struct mwl8k_priv *priv = hw->priv;
2328
2329 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2330 mwl8k_setup_2ghz_band(hw);
2331 if (caps & MWL8K_CAP_MIMO)
2332 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2333 }
2334
2335 if (caps & MWL8K_CAP_5GHZ) {
2336 mwl8k_setup_5ghz_band(hw);
2337 if (caps & MWL8K_CAP_MIMO)
2338 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2339 }
2340 }
2341
2342 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2343 {
2344 struct mwl8k_priv *priv = hw->priv;
2345 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2346 int rc;
2347 int i;
2348
2349 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2350 if (cmd == NULL)
2351 return -ENOMEM;
2352
2353 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2354 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2355
2356 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2357 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2358 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2359 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2360 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2361 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2362 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2363 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2364
2365 rc = mwl8k_post_cmd(hw, &cmd->header);
2366
2367 if (!rc) {
2368 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2369 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2370 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2371 priv->hw_rev = cmd->hw_rev;
2372 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2373 priv->ap_macids_supported = 0x00000000;
2374 priv->sta_macids_supported = 0x00000001;
2375 }
2376
2377 kfree(cmd);
2378 return rc;
2379 }
2380
2381 /*
2382 * CMD_GET_HW_SPEC (AP version).
2383 */
2384 struct mwl8k_cmd_get_hw_spec_ap {
2385 struct mwl8k_cmd_pkt header;
2386 __u8 hw_rev;
2387 __u8 host_interface;
2388 __le16 num_wcb;
2389 __le16 num_mcaddrs;
2390 __u8 perm_addr[ETH_ALEN];
2391 __le16 region_code;
2392 __le16 num_antenna;
2393 __le32 fw_rev;
2394 __le32 wcbbase0;
2395 __le32 rxwrptr;
2396 __le32 rxrdptr;
2397 __le32 ps_cookie;
2398 __le32 wcbbase1;
2399 __le32 wcbbase2;
2400 __le32 wcbbase3;
2401 __le32 fw_api_version;
2402 __le32 caps;
2403 __le32 num_of_ampdu_queues;
2404 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2405 } __packed;
2406
2407 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2408 {
2409 struct mwl8k_priv *priv = hw->priv;
2410 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2411 int rc, i;
2412 u32 api_version;
2413
2414 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2415 if (cmd == NULL)
2416 return -ENOMEM;
2417
2418 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2419 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2420
2421 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2422 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2423
2424 rc = mwl8k_post_cmd(hw, &cmd->header);
2425
2426 if (!rc) {
2427 int off;
2428
2429 api_version = le32_to_cpu(cmd->fw_api_version);
2430 if (priv->device_info->fw_api_ap != api_version) {
2431 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2432 " Expected %d got %d.\n", MWL8K_NAME,
2433 priv->device_info->part_name,
2434 priv->device_info->fw_api_ap,
2435 api_version);
2436 rc = -EINVAL;
2437 goto done;
2438 }
2439 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2440 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2441 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2442 priv->hw_rev = cmd->hw_rev;
2443 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2444 priv->ap_macids_supported = 0x000000ff;
2445 priv->sta_macids_supported = 0x00000000;
2446 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2447 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2448 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2449 " but we only support %d.\n",
2450 priv->num_ampdu_queues,
2451 MWL8K_MAX_AMPDU_QUEUES);
2452 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2453 }
2454 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2455 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2456
2457 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2458 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2459
2460 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2461 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2462 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2463 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2464
2465 for (i = 0; i < priv->num_ampdu_queues; i++)
2466 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2467 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2468 }
2469
2470 done:
2471 kfree(cmd);
2472 return rc;
2473 }
2474
2475 /*
2476 * CMD_SET_HW_SPEC.
2477 */
2478 struct mwl8k_cmd_set_hw_spec {
2479 struct mwl8k_cmd_pkt header;
2480 __u8 hw_rev;
2481 __u8 host_interface;
2482 __le16 num_mcaddrs;
2483 __u8 perm_addr[ETH_ALEN];
2484 __le16 region_code;
2485 __le32 fw_rev;
2486 __le32 ps_cookie;
2487 __le32 caps;
2488 __le32 rx_queue_ptr;
2489 __le32 num_tx_queues;
2490 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2491 __le32 flags;
2492 __le32 num_tx_desc_per_queue;
2493 __le32 total_rxd;
2494 } __packed;
2495
2496 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2497 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2498 * the packets that are queued for more than 500ms, will be dropped in the
2499 * hardware. This helps minimizing the issues caused due to head-of-line
2500 * blocking where a slow client can hog the bandwidth and affect traffic to a
2501 * faster client.
2502 */
2503 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2504 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2505 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2506 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2507 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2508
2509 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2510 {
2511 struct mwl8k_priv *priv = hw->priv;
2512 struct mwl8k_cmd_set_hw_spec *cmd;
2513 int rc;
2514 int i;
2515
2516 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2517 if (cmd == NULL)
2518 return -ENOMEM;
2519
2520 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2521 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2522
2523 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2524 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2525 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2526
2527 /*
2528 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2529 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2530 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2531 * priority is interpreted the right way in firmware.
2532 */
2533 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2534 int j = mwl8k_tx_queues(priv) - 1 - i;
2535 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2536 }
2537
2538 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2539 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2540 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2541 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2542 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2543 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2544 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2545
2546 rc = mwl8k_post_cmd(hw, &cmd->header);
2547 kfree(cmd);
2548
2549 return rc;
2550 }
2551
2552 /*
2553 * CMD_MAC_MULTICAST_ADR.
2554 */
2555 struct mwl8k_cmd_mac_multicast_adr {
2556 struct mwl8k_cmd_pkt header;
2557 __le16 action;
2558 __le16 numaddr;
2559 __u8 addr[0][ETH_ALEN];
2560 };
2561
2562 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2563 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2564 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2565 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2566
2567 static struct mwl8k_cmd_pkt *
2568 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2569 struct netdev_hw_addr_list *mc_list)
2570 {
2571 struct mwl8k_priv *priv = hw->priv;
2572 struct mwl8k_cmd_mac_multicast_adr *cmd;
2573 int size;
2574 int mc_count = 0;
2575
2576 if (mc_list)
2577 mc_count = netdev_hw_addr_list_count(mc_list);
2578
2579 if (allmulti || mc_count > priv->num_mcaddrs) {
2580 allmulti = 1;
2581 mc_count = 0;
2582 }
2583
2584 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2585
2586 cmd = kzalloc(size, GFP_ATOMIC);
2587 if (cmd == NULL)
2588 return NULL;
2589
2590 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2591 cmd->header.length = cpu_to_le16(size);
2592 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2593 MWL8K_ENABLE_RX_BROADCAST);
2594
2595 if (allmulti) {
2596 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2597 } else if (mc_count) {
2598 struct netdev_hw_addr *ha;
2599 int i = 0;
2600
2601 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2602 cmd->numaddr = cpu_to_le16(mc_count);
2603 netdev_hw_addr_list_for_each(ha, mc_list) {
2604 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2605 }
2606 }
2607
2608 return &cmd->header;
2609 }
2610
2611 /*
2612 * CMD_GET_STAT.
2613 */
2614 struct mwl8k_cmd_get_stat {
2615 struct mwl8k_cmd_pkt header;
2616 __le32 stats[64];
2617 } __packed;
2618
2619 #define MWL8K_STAT_ACK_FAILURE 9
2620 #define MWL8K_STAT_RTS_FAILURE 12
2621 #define MWL8K_STAT_FCS_ERROR 24
2622 #define MWL8K_STAT_RTS_SUCCESS 11
2623
2624 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2625 struct ieee80211_low_level_stats *stats)
2626 {
2627 struct mwl8k_cmd_get_stat *cmd;
2628 int rc;
2629
2630 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2631 if (cmd == NULL)
2632 return -ENOMEM;
2633
2634 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2635 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2636
2637 rc = mwl8k_post_cmd(hw, &cmd->header);
2638 if (!rc) {
2639 stats->dot11ACKFailureCount =
2640 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2641 stats->dot11RTSFailureCount =
2642 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2643 stats->dot11FCSErrorCount =
2644 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2645 stats->dot11RTSSuccessCount =
2646 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2647 }
2648 kfree(cmd);
2649
2650 return rc;
2651 }
2652
2653 /*
2654 * CMD_RADIO_CONTROL.
2655 */
2656 struct mwl8k_cmd_radio_control {
2657 struct mwl8k_cmd_pkt header;
2658 __le16 action;
2659 __le16 control;
2660 __le16 radio_on;
2661 } __packed;
2662
2663 static int
2664 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2665 {
2666 struct mwl8k_priv *priv = hw->priv;
2667 struct mwl8k_cmd_radio_control *cmd;
2668 int rc;
2669
2670 if (enable == priv->radio_on && !force)
2671 return 0;
2672
2673 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2674 if (cmd == NULL)
2675 return -ENOMEM;
2676
2677 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2678 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2679 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2680 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2681 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2682
2683 rc = mwl8k_post_cmd(hw, &cmd->header);
2684 kfree(cmd);
2685
2686 if (!rc)
2687 priv->radio_on = enable;
2688
2689 return rc;
2690 }
2691
2692 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2693 {
2694 return mwl8k_cmd_radio_control(hw, 0, 0);
2695 }
2696
2697 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2698 {
2699 return mwl8k_cmd_radio_control(hw, 1, 0);
2700 }
2701
2702 static int
2703 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2704 {
2705 struct mwl8k_priv *priv = hw->priv;
2706
2707 priv->radio_short_preamble = short_preamble;
2708
2709 return mwl8k_cmd_radio_control(hw, 1, 1);
2710 }
2711
2712 /*
2713 * CMD_RF_TX_POWER.
2714 */
2715 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2716
2717 struct mwl8k_cmd_rf_tx_power {
2718 struct mwl8k_cmd_pkt header;
2719 __le16 action;
2720 __le16 support_level;
2721 __le16 current_level;
2722 __le16 reserved;
2723 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2724 } __packed;
2725
2726 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2727 {
2728 struct mwl8k_cmd_rf_tx_power *cmd;
2729 int rc;
2730
2731 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2732 if (cmd == NULL)
2733 return -ENOMEM;
2734
2735 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2736 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2737 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2738 cmd->support_level = cpu_to_le16(dBm);
2739
2740 rc = mwl8k_post_cmd(hw, &cmd->header);
2741 kfree(cmd);
2742
2743 return rc;
2744 }
2745
2746 /*
2747 * CMD_TX_POWER.
2748 */
2749 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2750
2751 struct mwl8k_cmd_tx_power {
2752 struct mwl8k_cmd_pkt header;
2753 __le16 action;
2754 __le16 band;
2755 __le16 channel;
2756 __le16 bw;
2757 __le16 sub_ch;
2758 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2759 } __packed;
2760
2761 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2762 struct ieee80211_conf *conf,
2763 unsigned short pwr)
2764 {
2765 struct ieee80211_channel *channel = conf->channel;
2766 struct mwl8k_cmd_tx_power *cmd;
2767 int rc;
2768 int i;
2769
2770 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2771 if (cmd == NULL)
2772 return -ENOMEM;
2773
2774 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2775 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2776 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2777
2778 if (channel->band == IEEE80211_BAND_2GHZ)
2779 cmd->band = cpu_to_le16(0x1);
2780 else if (channel->band == IEEE80211_BAND_5GHZ)
2781 cmd->band = cpu_to_le16(0x4);
2782
2783 cmd->channel = cpu_to_le16(channel->hw_value);
2784
2785 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2786 conf->channel_type == NL80211_CHAN_HT20) {
2787 cmd->bw = cpu_to_le16(0x2);
2788 } else {
2789 cmd->bw = cpu_to_le16(0x4);
2790 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2791 cmd->sub_ch = cpu_to_le16(0x3);
2792 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2793 cmd->sub_ch = cpu_to_le16(0x1);
2794 }
2795
2796 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2797 cmd->power_level_list[i] = cpu_to_le16(pwr);
2798
2799 rc = mwl8k_post_cmd(hw, &cmd->header);
2800 kfree(cmd);
2801
2802 return rc;
2803 }
2804
2805 /*
2806 * CMD_RF_ANTENNA.
2807 */
2808 struct mwl8k_cmd_rf_antenna {
2809 struct mwl8k_cmd_pkt header;
2810 __le16 antenna;
2811 __le16 mode;
2812 } __packed;
2813
2814 #define MWL8K_RF_ANTENNA_RX 1
2815 #define MWL8K_RF_ANTENNA_TX 2
2816
2817 static int
2818 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2819 {
2820 struct mwl8k_cmd_rf_antenna *cmd;
2821 int rc;
2822
2823 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2824 if (cmd == NULL)
2825 return -ENOMEM;
2826
2827 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2828 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2829 cmd->antenna = cpu_to_le16(antenna);
2830 cmd->mode = cpu_to_le16(mask);
2831
2832 rc = mwl8k_post_cmd(hw, &cmd->header);
2833 kfree(cmd);
2834
2835 return rc;
2836 }
2837
2838 /*
2839 * CMD_SET_BEACON.
2840 */
2841 struct mwl8k_cmd_set_beacon {
2842 struct mwl8k_cmd_pkt header;
2843 __le16 beacon_len;
2844 __u8 beacon[0];
2845 };
2846
2847 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2848 struct ieee80211_vif *vif, u8 *beacon, int len)
2849 {
2850 struct mwl8k_cmd_set_beacon *cmd;
2851 int rc;
2852
2853 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2854 if (cmd == NULL)
2855 return -ENOMEM;
2856
2857 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2858 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2859 cmd->beacon_len = cpu_to_le16(len);
2860 memcpy(cmd->beacon, beacon, len);
2861
2862 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2863 kfree(cmd);
2864
2865 return rc;
2866 }
2867
2868 /*
2869 * CMD_SET_PRE_SCAN.
2870 */
2871 struct mwl8k_cmd_set_pre_scan {
2872 struct mwl8k_cmd_pkt header;
2873 } __packed;
2874
2875 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2876 {
2877 struct mwl8k_cmd_set_pre_scan *cmd;
2878 int rc;
2879
2880 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2881 if (cmd == NULL)
2882 return -ENOMEM;
2883
2884 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2885 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2886
2887 rc = mwl8k_post_cmd(hw, &cmd->header);
2888 kfree(cmd);
2889
2890 return rc;
2891 }
2892
2893 /*
2894 * CMD_SET_POST_SCAN.
2895 */
2896 struct mwl8k_cmd_set_post_scan {
2897 struct mwl8k_cmd_pkt header;
2898 __le32 isibss;
2899 __u8 bssid[ETH_ALEN];
2900 } __packed;
2901
2902 static int
2903 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2904 {
2905 struct mwl8k_cmd_set_post_scan *cmd;
2906 int rc;
2907
2908 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2909 if (cmd == NULL)
2910 return -ENOMEM;
2911
2912 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2913 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2914 cmd->isibss = 0;
2915 memcpy(cmd->bssid, mac, ETH_ALEN);
2916
2917 rc = mwl8k_post_cmd(hw, &cmd->header);
2918 kfree(cmd);
2919
2920 return rc;
2921 }
2922
2923 /*
2924 * CMD_SET_RF_CHANNEL.
2925 */
2926 struct mwl8k_cmd_set_rf_channel {
2927 struct mwl8k_cmd_pkt header;
2928 __le16 action;
2929 __u8 current_channel;
2930 __le32 channel_flags;
2931 } __packed;
2932
2933 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2934 struct ieee80211_conf *conf)
2935 {
2936 struct ieee80211_channel *channel = conf->channel;
2937 struct mwl8k_cmd_set_rf_channel *cmd;
2938 int rc;
2939
2940 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2941 if (cmd == NULL)
2942 return -ENOMEM;
2943
2944 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2945 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2946 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2947 cmd->current_channel = channel->hw_value;
2948
2949 if (channel->band == IEEE80211_BAND_2GHZ)
2950 cmd->channel_flags |= cpu_to_le32(0x00000001);
2951 else if (channel->band == IEEE80211_BAND_5GHZ)
2952 cmd->channel_flags |= cpu_to_le32(0x00000004);
2953
2954 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2955 conf->channel_type == NL80211_CHAN_HT20)
2956 cmd->channel_flags |= cpu_to_le32(0x00000080);
2957 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2958 cmd->channel_flags |= cpu_to_le32(0x000001900);
2959 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2960 cmd->channel_flags |= cpu_to_le32(0x000000900);
2961
2962 rc = mwl8k_post_cmd(hw, &cmd->header);
2963 kfree(cmd);
2964
2965 return rc;
2966 }
2967
2968 /*
2969 * CMD_SET_AID.
2970 */
2971 #define MWL8K_FRAME_PROT_DISABLED 0x00
2972 #define MWL8K_FRAME_PROT_11G 0x07
2973 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2974 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2975
2976 struct mwl8k_cmd_update_set_aid {
2977 struct mwl8k_cmd_pkt header;
2978 __le16 aid;
2979
2980 /* AP's MAC address (BSSID) */
2981 __u8 bssid[ETH_ALEN];
2982 __le16 protection_mode;
2983 __u8 supp_rates[14];
2984 } __packed;
2985
2986 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2987 {
2988 int i;
2989 int j;
2990
2991 /*
2992 * Clear nonstandard rates 4 and 13.
2993 */
2994 mask &= 0x1fef;
2995
2996 for (i = 0, j = 0; i < 14; i++) {
2997 if (mask & (1 << i))
2998 rates[j++] = mwl8k_rates_24[i].hw_value;
2999 }
3000 }
3001
3002 static int
3003 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3004 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3005 {
3006 struct mwl8k_cmd_update_set_aid *cmd;
3007 u16 prot_mode;
3008 int rc;
3009
3010 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3011 if (cmd == NULL)
3012 return -ENOMEM;
3013
3014 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3015 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3016 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3017 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3018
3019 if (vif->bss_conf.use_cts_prot) {
3020 prot_mode = MWL8K_FRAME_PROT_11G;
3021 } else {
3022 switch (vif->bss_conf.ht_operation_mode &
3023 IEEE80211_HT_OP_MODE_PROTECTION) {
3024 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3025 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3026 break;
3027 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3028 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3029 break;
3030 default:
3031 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3032 break;
3033 }
3034 }
3035 cmd->protection_mode = cpu_to_le16(prot_mode);
3036
3037 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3038
3039 rc = mwl8k_post_cmd(hw, &cmd->header);
3040 kfree(cmd);
3041
3042 return rc;
3043 }
3044
3045 /*
3046 * CMD_SET_RATE.
3047 */
3048 struct mwl8k_cmd_set_rate {
3049 struct mwl8k_cmd_pkt header;
3050 __u8 legacy_rates[14];
3051
3052 /* Bitmap for supported MCS codes. */
3053 __u8 mcs_set[16];
3054 __u8 reserved[16];
3055 } __packed;
3056
3057 static int
3058 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3059 u32 legacy_rate_mask, u8 *mcs_rates)
3060 {
3061 struct mwl8k_cmd_set_rate *cmd;
3062 int rc;
3063
3064 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3065 if (cmd == NULL)
3066 return -ENOMEM;
3067
3068 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3069 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3070 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3071 memcpy(cmd->mcs_set, mcs_rates, 16);
3072
3073 rc = mwl8k_post_cmd(hw, &cmd->header);
3074 kfree(cmd);
3075
3076 return rc;
3077 }
3078
3079 /*
3080 * CMD_FINALIZE_JOIN.
3081 */
3082 #define MWL8K_FJ_BEACON_MAXLEN 128
3083
3084 struct mwl8k_cmd_finalize_join {
3085 struct mwl8k_cmd_pkt header;
3086 __le32 sleep_interval; /* Number of beacon periods to sleep */
3087 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3088 } __packed;
3089
3090 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3091 int framelen, int dtim)
3092 {
3093 struct mwl8k_cmd_finalize_join *cmd;
3094 struct ieee80211_mgmt *payload = frame;
3095 int payload_len;
3096 int rc;
3097
3098 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3099 if (cmd == NULL)
3100 return -ENOMEM;
3101
3102 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3103 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3104 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3105
3106 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3107 if (payload_len < 0)
3108 payload_len = 0;
3109 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3110 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3111
3112 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3113
3114 rc = mwl8k_post_cmd(hw, &cmd->header);
3115 kfree(cmd);
3116
3117 return rc;
3118 }
3119
3120 /*
3121 * CMD_SET_RTS_THRESHOLD.
3122 */
3123 struct mwl8k_cmd_set_rts_threshold {
3124 struct mwl8k_cmd_pkt header;
3125 __le16 action;
3126 __le16 threshold;
3127 } __packed;
3128
3129 static int
3130 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3131 {
3132 struct mwl8k_cmd_set_rts_threshold *cmd;
3133 int rc;
3134
3135 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3136 if (cmd == NULL)
3137 return -ENOMEM;
3138
3139 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3140 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3141 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3142 cmd->threshold = cpu_to_le16(rts_thresh);
3143
3144 rc = mwl8k_post_cmd(hw, &cmd->header);
3145 kfree(cmd);
3146
3147 return rc;
3148 }
3149
3150 /*
3151 * CMD_SET_SLOT.
3152 */
3153 struct mwl8k_cmd_set_slot {
3154 struct mwl8k_cmd_pkt header;
3155 __le16 action;
3156 __u8 short_slot;
3157 } __packed;
3158
3159 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3160 {
3161 struct mwl8k_cmd_set_slot *cmd;
3162 int rc;
3163
3164 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3165 if (cmd == NULL)
3166 return -ENOMEM;
3167
3168 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3169 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3170 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3171 cmd->short_slot = short_slot_time;
3172
3173 rc = mwl8k_post_cmd(hw, &cmd->header);
3174 kfree(cmd);
3175
3176 return rc;
3177 }
3178
3179 /*
3180 * CMD_SET_EDCA_PARAMS.
3181 */
3182 struct mwl8k_cmd_set_edca_params {
3183 struct mwl8k_cmd_pkt header;
3184
3185 /* See MWL8K_SET_EDCA_XXX below */
3186 __le16 action;
3187
3188 /* TX opportunity in units of 32 us */
3189 __le16 txop;
3190
3191 union {
3192 struct {
3193 /* Log exponent of max contention period: 0...15 */
3194 __le32 log_cw_max;
3195
3196 /* Log exponent of min contention period: 0...15 */
3197 __le32 log_cw_min;
3198
3199 /* Adaptive interframe spacing in units of 32us */
3200 __u8 aifs;
3201
3202 /* TX queue to configure */
3203 __u8 txq;
3204 } ap;
3205 struct {
3206 /* Log exponent of max contention period: 0...15 */
3207 __u8 log_cw_max;
3208
3209 /* Log exponent of min contention period: 0...15 */
3210 __u8 log_cw_min;
3211
3212 /* Adaptive interframe spacing in units of 32us */
3213 __u8 aifs;
3214
3215 /* TX queue to configure */
3216 __u8 txq;
3217 } sta;
3218 };
3219 } __packed;
3220
3221 #define MWL8K_SET_EDCA_CW 0x01
3222 #define MWL8K_SET_EDCA_TXOP 0x02
3223 #define MWL8K_SET_EDCA_AIFS 0x04
3224
3225 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3226 MWL8K_SET_EDCA_TXOP | \
3227 MWL8K_SET_EDCA_AIFS)
3228
3229 static int
3230 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3231 __u16 cw_min, __u16 cw_max,
3232 __u8 aifs, __u16 txop)
3233 {
3234 struct mwl8k_priv *priv = hw->priv;
3235 struct mwl8k_cmd_set_edca_params *cmd;
3236 int rc;
3237
3238 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3239 if (cmd == NULL)
3240 return -ENOMEM;
3241
3242 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3243 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3244 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3245 cmd->txop = cpu_to_le16(txop);
3246 if (priv->ap_fw) {
3247 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3248 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3249 cmd->ap.aifs = aifs;
3250 cmd->ap.txq = qnum;
3251 } else {
3252 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3253 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3254 cmd->sta.aifs = aifs;
3255 cmd->sta.txq = qnum;
3256 }
3257
3258 rc = mwl8k_post_cmd(hw, &cmd->header);
3259 kfree(cmd);
3260
3261 return rc;
3262 }
3263
3264 /*
3265 * CMD_SET_WMM_MODE.
3266 */
3267 struct mwl8k_cmd_set_wmm_mode {
3268 struct mwl8k_cmd_pkt header;
3269 __le16 action;
3270 } __packed;
3271
3272 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3273 {
3274 struct mwl8k_priv *priv = hw->priv;
3275 struct mwl8k_cmd_set_wmm_mode *cmd;
3276 int rc;
3277
3278 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3279 if (cmd == NULL)
3280 return -ENOMEM;
3281
3282 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3283 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3284 cmd->action = cpu_to_le16(!!enable);
3285
3286 rc = mwl8k_post_cmd(hw, &cmd->header);
3287 kfree(cmd);
3288
3289 if (!rc)
3290 priv->wmm_enabled = enable;
3291
3292 return rc;
3293 }
3294
3295 /*
3296 * CMD_MIMO_CONFIG.
3297 */
3298 struct mwl8k_cmd_mimo_config {
3299 struct mwl8k_cmd_pkt header;
3300 __le32 action;
3301 __u8 rx_antenna_map;
3302 __u8 tx_antenna_map;
3303 } __packed;
3304
3305 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3306 {
3307 struct mwl8k_cmd_mimo_config *cmd;
3308 int rc;
3309
3310 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3311 if (cmd == NULL)
3312 return -ENOMEM;
3313
3314 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3315 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3316 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3317 cmd->rx_antenna_map = rx;
3318 cmd->tx_antenna_map = tx;
3319
3320 rc = mwl8k_post_cmd(hw, &cmd->header);
3321 kfree(cmd);
3322
3323 return rc;
3324 }
3325
3326 /*
3327 * CMD_USE_FIXED_RATE (STA version).
3328 */
3329 struct mwl8k_cmd_use_fixed_rate_sta {
3330 struct mwl8k_cmd_pkt header;
3331 __le32 action;
3332 __le32 allow_rate_drop;
3333 __le32 num_rates;
3334 struct {
3335 __le32 is_ht_rate;
3336 __le32 enable_retry;
3337 __le32 rate;
3338 __le32 retry_count;
3339 } rate_entry[8];
3340 __le32 rate_type;
3341 __le32 reserved1;
3342 __le32 reserved2;
3343 } __packed;
3344
3345 #define MWL8K_USE_AUTO_RATE 0x0002
3346 #define MWL8K_UCAST_RATE 0
3347
3348 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3349 {
3350 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3351 int rc;
3352
3353 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3354 if (cmd == NULL)
3355 return -ENOMEM;
3356
3357 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3358 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3359 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3360 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3361
3362 rc = mwl8k_post_cmd(hw, &cmd->header);
3363 kfree(cmd);
3364
3365 return rc;
3366 }
3367
3368 /*
3369 * CMD_USE_FIXED_RATE (AP version).
3370 */
3371 struct mwl8k_cmd_use_fixed_rate_ap {
3372 struct mwl8k_cmd_pkt header;
3373 __le32 action;
3374 __le32 allow_rate_drop;
3375 __le32 num_rates;
3376 struct mwl8k_rate_entry_ap {
3377 __le32 is_ht_rate;
3378 __le32 enable_retry;
3379 __le32 rate;
3380 __le32 retry_count;
3381 } rate_entry[4];
3382 u8 multicast_rate;
3383 u8 multicast_rate_type;
3384 u8 management_rate;
3385 } __packed;
3386
3387 static int
3388 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3389 {
3390 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3391 int rc;
3392
3393 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3394 if (cmd == NULL)
3395 return -ENOMEM;
3396
3397 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3398 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3399 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3400 cmd->multicast_rate = mcast;
3401 cmd->management_rate = mgmt;
3402
3403 rc = mwl8k_post_cmd(hw, &cmd->header);
3404 kfree(cmd);
3405
3406 return rc;
3407 }
3408
3409 /*
3410 * CMD_ENABLE_SNIFFER.
3411 */
3412 struct mwl8k_cmd_enable_sniffer {
3413 struct mwl8k_cmd_pkt header;
3414 __le32 action;
3415 } __packed;
3416
3417 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3418 {
3419 struct mwl8k_cmd_enable_sniffer *cmd;
3420 int rc;
3421
3422 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3423 if (cmd == NULL)
3424 return -ENOMEM;
3425
3426 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3427 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3428 cmd->action = cpu_to_le32(!!enable);
3429
3430 rc = mwl8k_post_cmd(hw, &cmd->header);
3431 kfree(cmd);
3432
3433 return rc;
3434 }
3435
3436 struct mwl8k_cmd_update_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
3452 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3453 struct ieee80211_vif *vif, u8 *mac, bool set)
3454 {
3455 struct mwl8k_priv *priv = hw->priv;
3456 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3457 struct mwl8k_cmd_update_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 if (set)
3479 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3480 else
3481 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3482
3483 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3484 if (priv->ap_fw) {
3485 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3486 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3487 } else {
3488 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3489 }
3490
3491 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3492 kfree(cmd);
3493
3494 return rc;
3495 }
3496
3497 /*
3498 * MWL8K_CMD_SET_MAC_ADDR.
3499 */
3500 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3501 struct ieee80211_vif *vif, u8 *mac)
3502 {
3503 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3504 }
3505
3506 /*
3507 * MWL8K_CMD_DEL_MAC_ADDR.
3508 */
3509 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3510 struct ieee80211_vif *vif, u8 *mac)
3511 {
3512 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3513 }
3514
3515 /*
3516 * CMD_SET_RATEADAPT_MODE.
3517 */
3518 struct mwl8k_cmd_set_rate_adapt_mode {
3519 struct mwl8k_cmd_pkt header;
3520 __le16 action;
3521 __le16 mode;
3522 } __packed;
3523
3524 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3525 {
3526 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3527 int rc;
3528
3529 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3530 if (cmd == NULL)
3531 return -ENOMEM;
3532
3533 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3534 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3535 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3536 cmd->mode = cpu_to_le16(mode);
3537
3538 rc = mwl8k_post_cmd(hw, &cmd->header);
3539 kfree(cmd);
3540
3541 return rc;
3542 }
3543
3544 /*
3545 * CMD_GET_WATCHDOG_BITMAP.
3546 */
3547 struct mwl8k_cmd_get_watchdog_bitmap {
3548 struct mwl8k_cmd_pkt header;
3549 u8 bitmap;
3550 } __packed;
3551
3552 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3553 {
3554 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3555 int rc;
3556
3557 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3558 if (cmd == NULL)
3559 return -ENOMEM;
3560
3561 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3562 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3563
3564 rc = mwl8k_post_cmd(hw, &cmd->header);
3565 if (!rc)
3566 *bitmap = cmd->bitmap;
3567
3568 kfree(cmd);
3569
3570 return rc;
3571 }
3572
3573 #define INVALID_BA 0xAA
3574 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3575 {
3576 int rc;
3577 u8 bitmap = 0, stream_index;
3578 struct mwl8k_ampdu_stream *streams;
3579 struct mwl8k_priv *priv =
3580 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3581
3582 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3583 if (rc)
3584 return;
3585
3586 if (bitmap == INVALID_BA)
3587 return;
3588
3589 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3590 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3591
3592 BUG_ON(stream_index >= priv->num_ampdu_queues);
3593
3594 streams = &priv->ampdu[stream_index];
3595
3596 if (streams->state == AMPDU_STREAM_ACTIVE)
3597 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3598
3599 return;
3600 }
3601
3602
3603 /*
3604 * CMD_BSS_START.
3605 */
3606 struct mwl8k_cmd_bss_start {
3607 struct mwl8k_cmd_pkt header;
3608 __le32 enable;
3609 } __packed;
3610
3611 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3612 struct ieee80211_vif *vif, int enable)
3613 {
3614 struct mwl8k_cmd_bss_start *cmd;
3615 int rc;
3616
3617 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3618 if (cmd == NULL)
3619 return -ENOMEM;
3620
3621 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3622 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3623 cmd->enable = cpu_to_le32(enable);
3624
3625 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3626 kfree(cmd);
3627
3628 return rc;
3629 }
3630
3631 /*
3632 * CMD_BASTREAM.
3633 */
3634
3635 /*
3636 * UPSTREAM is tx direction
3637 */
3638 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3639 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3640
3641 enum ba_stream_action_type {
3642 MWL8K_BA_CREATE,
3643 MWL8K_BA_UPDATE,
3644 MWL8K_BA_DESTROY,
3645 MWL8K_BA_FLUSH,
3646 MWL8K_BA_CHECK,
3647 };
3648
3649
3650 struct mwl8k_create_ba_stream {
3651 __le32 flags;
3652 __le32 idle_thrs;
3653 __le32 bar_thrs;
3654 __le32 window_size;
3655 u8 peer_mac_addr[6];
3656 u8 dialog_token;
3657 u8 tid;
3658 u8 queue_id;
3659 u8 param_info;
3660 __le32 ba_context;
3661 u8 reset_seq_no_flag;
3662 __le16 curr_seq_no;
3663 u8 sta_src_mac_addr[6];
3664 } __packed;
3665
3666 struct mwl8k_destroy_ba_stream {
3667 __le32 flags;
3668 __le32 ba_context;
3669 } __packed;
3670
3671 struct mwl8k_cmd_bastream {
3672 struct mwl8k_cmd_pkt header;
3673 __le32 action;
3674 union {
3675 struct mwl8k_create_ba_stream create_params;
3676 struct mwl8k_destroy_ba_stream destroy_params;
3677 };
3678 } __packed;
3679
3680 static int
3681 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3682 {
3683 struct mwl8k_cmd_bastream *cmd;
3684 int rc;
3685
3686 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3687 if (cmd == NULL)
3688 return -ENOMEM;
3689
3690 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3691 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3692
3693 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3694
3695 cmd->create_params.queue_id = stream->idx;
3696 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3697 ETH_ALEN);
3698 cmd->create_params.tid = stream->tid;
3699
3700 cmd->create_params.flags =
3701 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3702 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3703
3704 rc = mwl8k_post_cmd(hw, &cmd->header);
3705
3706 kfree(cmd);
3707
3708 return rc;
3709 }
3710
3711 static int
3712 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3713 u8 buf_size)
3714 {
3715 struct mwl8k_cmd_bastream *cmd;
3716 int rc;
3717
3718 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3719 if (cmd == NULL)
3720 return -ENOMEM;
3721
3722
3723 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3724 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3725
3726 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3727
3728 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3729 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3730 cmd->create_params.queue_id = stream->idx;
3731
3732 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3733 cmd->create_params.tid = stream->tid;
3734 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3735 cmd->create_params.reset_seq_no_flag = 1;
3736
3737 cmd->create_params.param_info =
3738 (stream->sta->ht_cap.ampdu_factor &
3739 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3740 ((stream->sta->ht_cap.ampdu_density << 2) &
3741 IEEE80211_HT_AMPDU_PARM_DENSITY);
3742
3743 cmd->create_params.flags =
3744 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3745 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3746
3747 rc = mwl8k_post_cmd(hw, &cmd->header);
3748
3749 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3750 stream->sta->addr, stream->tid);
3751 kfree(cmd);
3752
3753 return rc;
3754 }
3755
3756 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3757 struct mwl8k_ampdu_stream *stream)
3758 {
3759 struct mwl8k_cmd_bastream *cmd;
3760
3761 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3762 if (cmd == NULL)
3763 return;
3764
3765 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3766 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3767 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3768
3769 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3770 mwl8k_post_cmd(hw, &cmd->header);
3771
3772 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3773
3774 kfree(cmd);
3775 }
3776
3777 /*
3778 * CMD_SET_NEW_STN.
3779 */
3780 struct mwl8k_cmd_set_new_stn {
3781 struct mwl8k_cmd_pkt header;
3782 __le16 aid;
3783 __u8 mac_addr[6];
3784 __le16 stn_id;
3785 __le16 action;
3786 __le16 rsvd;
3787 __le32 legacy_rates;
3788 __u8 ht_rates[4];
3789 __le16 cap_info;
3790 __le16 ht_capabilities_info;
3791 __u8 mac_ht_param_info;
3792 __u8 rev;
3793 __u8 control_channel;
3794 __u8 add_channel;
3795 __le16 op_mode;
3796 __le16 stbc;
3797 __u8 add_qos_info;
3798 __u8 is_qos_sta;
3799 __le32 fw_sta_ptr;
3800 } __packed;
3801
3802 #define MWL8K_STA_ACTION_ADD 0
3803 #define MWL8K_STA_ACTION_REMOVE 2
3804
3805 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3806 struct ieee80211_vif *vif,
3807 struct ieee80211_sta *sta)
3808 {
3809 struct mwl8k_cmd_set_new_stn *cmd;
3810 u32 rates;
3811 int rc;
3812
3813 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3814 if (cmd == NULL)
3815 return -ENOMEM;
3816
3817 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3818 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3819 cmd->aid = cpu_to_le16(sta->aid);
3820 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3821 cmd->stn_id = cpu_to_le16(sta->aid);
3822 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3823 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3824 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3825 else
3826 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3827 cmd->legacy_rates = cpu_to_le32(rates);
3828 if (sta->ht_cap.ht_supported) {
3829 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3830 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3831 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3832 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3833 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3834 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3835 ((sta->ht_cap.ampdu_density & 7) << 2);
3836 cmd->is_qos_sta = 1;
3837 }
3838
3839 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3840 kfree(cmd);
3841
3842 return rc;
3843 }
3844
3845 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3846 struct ieee80211_vif *vif)
3847 {
3848 struct mwl8k_cmd_set_new_stn *cmd;
3849 int rc;
3850
3851 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3852 if (cmd == NULL)
3853 return -ENOMEM;
3854
3855 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3856 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3857 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3858
3859 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3860 kfree(cmd);
3861
3862 return rc;
3863 }
3864
3865 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3866 struct ieee80211_vif *vif, u8 *addr)
3867 {
3868 struct mwl8k_cmd_set_new_stn *cmd;
3869 int rc;
3870
3871 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3872 if (cmd == NULL)
3873 return -ENOMEM;
3874
3875 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3876 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3877 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3878 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3879
3880 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3881 kfree(cmd);
3882
3883 return rc;
3884 }
3885
3886 /*
3887 * CMD_UPDATE_ENCRYPTION.
3888 */
3889
3890 #define MAX_ENCR_KEY_LENGTH 16
3891 #define MIC_KEY_LENGTH 8
3892
3893 struct mwl8k_cmd_update_encryption {
3894 struct mwl8k_cmd_pkt header;
3895
3896 __le32 action;
3897 __le32 reserved;
3898 __u8 mac_addr[6];
3899 __u8 encr_type;
3900
3901 } __packed;
3902
3903 struct mwl8k_cmd_set_key {
3904 struct mwl8k_cmd_pkt header;
3905
3906 __le32 action;
3907 __le32 reserved;
3908 __le16 length;
3909 __le16 key_type_id;
3910 __le32 key_info;
3911 __le32 key_id;
3912 __le16 key_len;
3913 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3914 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3915 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3916 __le16 tkip_rsc_low;
3917 __le32 tkip_rsc_high;
3918 __le16 tkip_tsc_low;
3919 __le32 tkip_tsc_high;
3920 __u8 mac_addr[6];
3921 } __packed;
3922
3923 enum {
3924 MWL8K_ENCR_ENABLE,
3925 MWL8K_ENCR_SET_KEY,
3926 MWL8K_ENCR_REMOVE_KEY,
3927 MWL8K_ENCR_SET_GROUP_KEY,
3928 };
3929
3930 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3931 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3932 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3933 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3934 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3935
3936 enum {
3937 MWL8K_ALG_WEP,
3938 MWL8K_ALG_TKIP,
3939 MWL8K_ALG_CCMP,
3940 };
3941
3942 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3943 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3944 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3945 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3946 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3947
3948 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3949 struct ieee80211_vif *vif,
3950 u8 *addr,
3951 u8 encr_type)
3952 {
3953 struct mwl8k_cmd_update_encryption *cmd;
3954 int rc;
3955
3956 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3957 if (cmd == NULL)
3958 return -ENOMEM;
3959
3960 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3961 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3962 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3963 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3964 cmd->encr_type = encr_type;
3965
3966 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3967 kfree(cmd);
3968
3969 return rc;
3970 }
3971
3972 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3973 u8 *addr,
3974 struct ieee80211_key_conf *key)
3975 {
3976 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3977 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3978 cmd->length = cpu_to_le16(sizeof(*cmd) -
3979 offsetof(struct mwl8k_cmd_set_key, length));
3980 cmd->key_id = cpu_to_le32(key->keyidx);
3981 cmd->key_len = cpu_to_le16(key->keylen);
3982 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3983
3984 switch (key->cipher) {
3985 case WLAN_CIPHER_SUITE_WEP40:
3986 case WLAN_CIPHER_SUITE_WEP104:
3987 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3988 if (key->keyidx == 0)
3989 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3990
3991 break;
3992 case WLAN_CIPHER_SUITE_TKIP:
3993 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3994 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3995 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3996 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3997 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3998 | MWL8K_KEY_FLAG_TSC_VALID);
3999 break;
4000 case WLAN_CIPHER_SUITE_CCMP:
4001 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4002 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4003 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4004 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4005 break;
4006 default:
4007 return -ENOTSUPP;
4008 }
4009
4010 return 0;
4011 }
4012
4013 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4014 struct ieee80211_vif *vif,
4015 u8 *addr,
4016 struct ieee80211_key_conf *key)
4017 {
4018 struct mwl8k_cmd_set_key *cmd;
4019 int rc;
4020 int keymlen;
4021 u32 action;
4022 u8 idx;
4023 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4024
4025 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4026 if (cmd == NULL)
4027 return -ENOMEM;
4028
4029 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4030 if (rc < 0)
4031 goto done;
4032
4033 idx = key->keyidx;
4034
4035 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4036 action = MWL8K_ENCR_SET_KEY;
4037 else
4038 action = MWL8K_ENCR_SET_GROUP_KEY;
4039
4040 switch (key->cipher) {
4041 case WLAN_CIPHER_SUITE_WEP40:
4042 case WLAN_CIPHER_SUITE_WEP104:
4043 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4044 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4045 sizeof(*key) + key->keylen);
4046 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4047 }
4048
4049 keymlen = key->keylen;
4050 action = MWL8K_ENCR_SET_KEY;
4051 break;
4052 case WLAN_CIPHER_SUITE_TKIP:
4053 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4054 break;
4055 case WLAN_CIPHER_SUITE_CCMP:
4056 keymlen = key->keylen;
4057 break;
4058 default:
4059 rc = -ENOTSUPP;
4060 goto done;
4061 }
4062
4063 memcpy(cmd->key_material, key->key, keymlen);
4064 cmd->action = cpu_to_le32(action);
4065
4066 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4067 done:
4068 kfree(cmd);
4069
4070 return rc;
4071 }
4072
4073 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4074 struct ieee80211_vif *vif,
4075 u8 *addr,
4076 struct ieee80211_key_conf *key)
4077 {
4078 struct mwl8k_cmd_set_key *cmd;
4079 int rc;
4080 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4081
4082 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4083 if (cmd == NULL)
4084 return -ENOMEM;
4085
4086 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4087 if (rc < 0)
4088 goto done;
4089
4090 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4091 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4092 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4093
4094 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4095
4096 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4097 done:
4098 kfree(cmd);
4099
4100 return rc;
4101 }
4102
4103 static int mwl8k_set_key(struct ieee80211_hw *hw,
4104 enum set_key_cmd cmd_param,
4105 struct ieee80211_vif *vif,
4106 struct ieee80211_sta *sta,
4107 struct ieee80211_key_conf *key)
4108 {
4109 int rc = 0;
4110 u8 encr_type;
4111 u8 *addr;
4112 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4113
4114 if (vif->type == NL80211_IFTYPE_STATION)
4115 return -EOPNOTSUPP;
4116
4117 if (sta == NULL)
4118 addr = vif->addr;
4119 else
4120 addr = sta->addr;
4121
4122 if (cmd_param == SET_KEY) {
4123 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4124 if (rc)
4125 goto out;
4126
4127 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4128 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4129 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4130 else
4131 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4132
4133 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4134 encr_type);
4135 if (rc)
4136 goto out;
4137
4138 mwl8k_vif->is_hw_crypto_enabled = true;
4139
4140 } else {
4141 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4142
4143 if (rc)
4144 goto out;
4145 }
4146 out:
4147 return rc;
4148 }
4149
4150 /*
4151 * CMD_UPDATE_STADB.
4152 */
4153 struct ewc_ht_info {
4154 __le16 control1;
4155 __le16 control2;
4156 __le16 control3;
4157 } __packed;
4158
4159 struct peer_capability_info {
4160 /* Peer type - AP vs. STA. */
4161 __u8 peer_type;
4162
4163 /* Basic 802.11 capabilities from assoc resp. */
4164 __le16 basic_caps;
4165
4166 /* Set if peer supports 802.11n high throughput (HT). */
4167 __u8 ht_support;
4168
4169 /* Valid if HT is supported. */
4170 __le16 ht_caps;
4171 __u8 extended_ht_caps;
4172 struct ewc_ht_info ewc_info;
4173
4174 /* Legacy rate table. Intersection of our rates and peer rates. */
4175 __u8 legacy_rates[12];
4176
4177 /* HT rate table. Intersection of our rates and peer rates. */
4178 __u8 ht_rates[16];
4179 __u8 pad[16];
4180
4181 /* If set, interoperability mode, no proprietary extensions. */
4182 __u8 interop;
4183 __u8 pad2;
4184 __u8 station_id;
4185 __le16 amsdu_enabled;
4186 } __packed;
4187
4188 struct mwl8k_cmd_update_stadb {
4189 struct mwl8k_cmd_pkt header;
4190
4191 /* See STADB_ACTION_TYPE */
4192 __le32 action;
4193
4194 /* Peer MAC address */
4195 __u8 peer_addr[ETH_ALEN];
4196
4197 __le32 reserved;
4198
4199 /* Peer info - valid during add/update. */
4200 struct peer_capability_info peer_info;
4201 } __packed;
4202
4203 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4204 #define MWL8K_STA_DB_DEL_ENTRY 2
4205
4206 /* Peer Entry flags - used to define the type of the peer node */
4207 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4208
4209 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4210 struct ieee80211_vif *vif,
4211 struct ieee80211_sta *sta)
4212 {
4213 struct mwl8k_cmd_update_stadb *cmd;
4214 struct peer_capability_info *p;
4215 u32 rates;
4216 int rc;
4217
4218 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4219 if (cmd == NULL)
4220 return -ENOMEM;
4221
4222 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4223 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4224 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4225 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4226
4227 p = &cmd->peer_info;
4228 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4229 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4230 p->ht_support = sta->ht_cap.ht_supported;
4231 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4232 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4233 ((sta->ht_cap.ampdu_density & 7) << 2);
4234 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4235 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4236 else
4237 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4238 legacy_rate_mask_to_array(p->legacy_rates, rates);
4239 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4240 p->interop = 1;
4241 p->amsdu_enabled = 0;
4242
4243 rc = mwl8k_post_cmd(hw, &cmd->header);
4244 kfree(cmd);
4245
4246 return rc ? rc : p->station_id;
4247 }
4248
4249 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4250 struct ieee80211_vif *vif, u8 *addr)
4251 {
4252 struct mwl8k_cmd_update_stadb *cmd;
4253 int rc;
4254
4255 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4256 if (cmd == NULL)
4257 return -ENOMEM;
4258
4259 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4260 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4261 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4262 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4263
4264 rc = mwl8k_post_cmd(hw, &cmd->header);
4265 kfree(cmd);
4266
4267 return rc;
4268 }
4269
4270
4271 /*
4272 * Interrupt handling.
4273 */
4274 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4275 {
4276 struct ieee80211_hw *hw = dev_id;
4277 struct mwl8k_priv *priv = hw->priv;
4278 u32 status;
4279
4280 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4281 if (!status)
4282 return IRQ_NONE;
4283
4284 if (status & MWL8K_A2H_INT_TX_DONE) {
4285 status &= ~MWL8K_A2H_INT_TX_DONE;
4286 tasklet_schedule(&priv->poll_tx_task);
4287 }
4288
4289 if (status & MWL8K_A2H_INT_RX_READY) {
4290 status &= ~MWL8K_A2H_INT_RX_READY;
4291 tasklet_schedule(&priv->poll_rx_task);
4292 }
4293
4294 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4295 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4296 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4297 }
4298
4299 if (status)
4300 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4301
4302 if (status & MWL8K_A2H_INT_OPC_DONE) {
4303 if (priv->hostcmd_wait != NULL)
4304 complete(priv->hostcmd_wait);
4305 }
4306
4307 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4308 if (!mutex_is_locked(&priv->fw_mutex) &&
4309 priv->radio_on && priv->pending_tx_pkts)
4310 mwl8k_tx_start(priv);
4311 }
4312
4313 return IRQ_HANDLED;
4314 }
4315
4316 static void mwl8k_tx_poll(unsigned long data)
4317 {
4318 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4319 struct mwl8k_priv *priv = hw->priv;
4320 int limit;
4321 int i;
4322
4323 limit = 32;
4324
4325 spin_lock_bh(&priv->tx_lock);
4326
4327 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4328 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4329
4330 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4331 complete(priv->tx_wait);
4332 priv->tx_wait = NULL;
4333 }
4334
4335 spin_unlock_bh(&priv->tx_lock);
4336
4337 if (limit) {
4338 writel(~MWL8K_A2H_INT_TX_DONE,
4339 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4340 } else {
4341 tasklet_schedule(&priv->poll_tx_task);
4342 }
4343 }
4344
4345 static void mwl8k_rx_poll(unsigned long data)
4346 {
4347 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4348 struct mwl8k_priv *priv = hw->priv;
4349 int limit;
4350
4351 limit = 32;
4352 limit -= rxq_process(hw, 0, limit);
4353 limit -= rxq_refill(hw, 0, limit);
4354
4355 if (limit) {
4356 writel(~MWL8K_A2H_INT_RX_READY,
4357 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4358 } else {
4359 tasklet_schedule(&priv->poll_rx_task);
4360 }
4361 }
4362
4363
4364 /*
4365 * Core driver operations.
4366 */
4367 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4368 {
4369 struct mwl8k_priv *priv = hw->priv;
4370 int index = skb_get_queue_mapping(skb);
4371
4372 if (!priv->radio_on) {
4373 wiphy_debug(hw->wiphy,
4374 "dropped TX frame since radio disabled\n");
4375 dev_kfree_skb(skb);
4376 return;
4377 }
4378
4379 mwl8k_txq_xmit(hw, index, skb);
4380 }
4381
4382 static int mwl8k_start(struct ieee80211_hw *hw)
4383 {
4384 struct mwl8k_priv *priv = hw->priv;
4385 int rc;
4386
4387 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4388 IRQF_SHARED, MWL8K_NAME, hw);
4389 if (rc) {
4390 priv->irq = -1;
4391 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4392 return -EIO;
4393 }
4394 priv->irq = priv->pdev->irq;
4395
4396 /* Enable TX reclaim and RX tasklets. */
4397 tasklet_enable(&priv->poll_tx_task);
4398 tasklet_enable(&priv->poll_rx_task);
4399
4400 /* Enable interrupts */
4401 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4402 iowrite32(MWL8K_A2H_EVENTS,
4403 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4404
4405 rc = mwl8k_fw_lock(hw);
4406 if (!rc) {
4407 rc = mwl8k_cmd_radio_enable(hw);
4408
4409 if (!priv->ap_fw) {
4410 if (!rc)
4411 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4412
4413 if (!rc)
4414 rc = mwl8k_cmd_set_pre_scan(hw);
4415
4416 if (!rc)
4417 rc = mwl8k_cmd_set_post_scan(hw,
4418 "\x00\x00\x00\x00\x00\x00");
4419 }
4420
4421 if (!rc)
4422 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4423
4424 if (!rc)
4425 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4426
4427 mwl8k_fw_unlock(hw);
4428 }
4429
4430 if (rc) {
4431 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4432 free_irq(priv->pdev->irq, hw);
4433 priv->irq = -1;
4434 tasklet_disable(&priv->poll_tx_task);
4435 tasklet_disable(&priv->poll_rx_task);
4436 }
4437
4438 return rc;
4439 }
4440
4441 static void mwl8k_stop(struct ieee80211_hw *hw)
4442 {
4443 struct mwl8k_priv *priv = hw->priv;
4444 int i;
4445
4446 if (!priv->hw_restart_in_progress)
4447 mwl8k_cmd_radio_disable(hw);
4448
4449 ieee80211_stop_queues(hw);
4450
4451 /* Disable interrupts */
4452 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4453 if (priv->irq != -1) {
4454 free_irq(priv->pdev->irq, hw);
4455 priv->irq = -1;
4456 }
4457
4458 /* Stop finalize join worker */
4459 cancel_work_sync(&priv->finalize_join_worker);
4460 cancel_work_sync(&priv->watchdog_ba_handle);
4461 if (priv->beacon_skb != NULL)
4462 dev_kfree_skb(priv->beacon_skb);
4463
4464 /* Stop TX reclaim and RX tasklets. */
4465 tasklet_disable(&priv->poll_tx_task);
4466 tasklet_disable(&priv->poll_rx_task);
4467
4468 /* Return all skbs to mac80211 */
4469 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4470 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4471 }
4472
4473 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4474
4475 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4476 struct ieee80211_vif *vif)
4477 {
4478 struct mwl8k_priv *priv = hw->priv;
4479 struct mwl8k_vif *mwl8k_vif;
4480 u32 macids_supported;
4481 int macid, rc;
4482 struct mwl8k_device_info *di;
4483
4484 /*
4485 * Reject interface creation if sniffer mode is active, as
4486 * STA operation is mutually exclusive with hardware sniffer
4487 * mode. (Sniffer mode is only used on STA firmware.)
4488 */
4489 if (priv->sniffer_enabled) {
4490 wiphy_info(hw->wiphy,
4491 "unable to create STA interface because sniffer mode is enabled\n");
4492 return -EINVAL;
4493 }
4494
4495 di = priv->device_info;
4496 switch (vif->type) {
4497 case NL80211_IFTYPE_AP:
4498 if (!priv->ap_fw && di->fw_image_ap) {
4499 /* we must load the ap fw to meet this request */
4500 if (!list_empty(&priv->vif_list))
4501 return -EBUSY;
4502 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4503 if (rc)
4504 return rc;
4505 }
4506 macids_supported = priv->ap_macids_supported;
4507 break;
4508 case NL80211_IFTYPE_STATION:
4509 if (priv->ap_fw && di->fw_image_sta) {
4510 /* we must load the sta fw to meet this request */
4511 if (!list_empty(&priv->vif_list))
4512 return -EBUSY;
4513 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4514 if (rc)
4515 return rc;
4516 }
4517 macids_supported = priv->sta_macids_supported;
4518 break;
4519 default:
4520 return -EINVAL;
4521 }
4522
4523 macid = ffs(macids_supported & ~priv->macids_used);
4524 if (!macid--)
4525 return -EBUSY;
4526
4527 /* Setup driver private area. */
4528 mwl8k_vif = MWL8K_VIF(vif);
4529 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4530 mwl8k_vif->vif = vif;
4531 mwl8k_vif->macid = macid;
4532 mwl8k_vif->seqno = 0;
4533 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4534 mwl8k_vif->is_hw_crypto_enabled = false;
4535
4536 /* Set the mac address. */
4537 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4538
4539 if (priv->ap_fw)
4540 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4541
4542 priv->macids_used |= 1 << mwl8k_vif->macid;
4543 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4544
4545 return 0;
4546 }
4547
4548 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4549 {
4550 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4551 if (!priv->macids_used)
4552 return;
4553
4554 priv->macids_used &= ~(1 << vif->macid);
4555 list_del(&vif->list);
4556 }
4557
4558 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4559 struct ieee80211_vif *vif)
4560 {
4561 struct mwl8k_priv *priv = hw->priv;
4562 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4563
4564 if (priv->ap_fw)
4565 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4566
4567 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4568
4569 mwl8k_remove_vif(priv, mwl8k_vif);
4570 }
4571
4572 static void mwl8k_hw_restart_work(struct work_struct *work)
4573 {
4574 struct mwl8k_priv *priv =
4575 container_of(work, struct mwl8k_priv, fw_reload);
4576 struct ieee80211_hw *hw = priv->hw;
4577 struct mwl8k_device_info *di;
4578 int rc;
4579
4580 /* If some command is waiting for a response, clear it */
4581 if (priv->hostcmd_wait != NULL) {
4582 complete(priv->hostcmd_wait);
4583 priv->hostcmd_wait = NULL;
4584 }
4585
4586 priv->hw_restart_owner = current;
4587 di = priv->device_info;
4588 mwl8k_fw_lock(hw);
4589
4590 if (priv->ap_fw)
4591 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4592 else
4593 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4594
4595 if (rc)
4596 goto fail;
4597
4598 priv->hw_restart_owner = NULL;
4599 priv->hw_restart_in_progress = false;
4600
4601 /*
4602 * This unlock will wake up the queues and
4603 * also opens the command path for other
4604 * commands
4605 */
4606 mwl8k_fw_unlock(hw);
4607
4608 ieee80211_restart_hw(hw);
4609
4610 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4611
4612 return;
4613 fail:
4614 mwl8k_fw_unlock(hw);
4615
4616 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4617 }
4618
4619 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4620 {
4621 struct ieee80211_conf *conf = &hw->conf;
4622 struct mwl8k_priv *priv = hw->priv;
4623 int rc;
4624
4625 if (conf->flags & IEEE80211_CONF_IDLE) {
4626 mwl8k_cmd_radio_disable(hw);
4627 return 0;
4628 }
4629
4630 rc = mwl8k_fw_lock(hw);
4631 if (rc)
4632 return rc;
4633
4634 rc = mwl8k_cmd_radio_enable(hw);
4635 if (rc)
4636 goto out;
4637
4638 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4639 if (rc)
4640 goto out;
4641
4642 if (conf->power_level > 18)
4643 conf->power_level = 18;
4644
4645 if (priv->ap_fw) {
4646
4647 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4648 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4649 if (rc)
4650 goto out;
4651 }
4652
4653 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4654 if (rc)
4655 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4656 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4657 if (rc)
4658 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4659
4660 } else {
4661 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4662 if (rc)
4663 goto out;
4664 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4665 }
4666
4667 out:
4668 mwl8k_fw_unlock(hw);
4669
4670 return rc;
4671 }
4672
4673 static void
4674 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4675 struct ieee80211_bss_conf *info, u32 changed)
4676 {
4677 struct mwl8k_priv *priv = hw->priv;
4678 u32 ap_legacy_rates = 0;
4679 u8 ap_mcs_rates[16];
4680 int rc;
4681
4682 if (mwl8k_fw_lock(hw))
4683 return;
4684
4685 /*
4686 * No need to capture a beacon if we're no longer associated.
4687 */
4688 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4689 priv->capture_beacon = false;
4690
4691 /*
4692 * Get the AP's legacy and MCS rates.
4693 */
4694 if (vif->bss_conf.assoc) {
4695 struct ieee80211_sta *ap;
4696
4697 rcu_read_lock();
4698
4699 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4700 if (ap == NULL) {
4701 rcu_read_unlock();
4702 goto out;
4703 }
4704
4705 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4706 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4707 } else {
4708 ap_legacy_rates =
4709 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4710 }
4711 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4712
4713 rcu_read_unlock();
4714 }
4715
4716 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4717 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4718 if (rc)
4719 goto out;
4720
4721 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4722 if (rc)
4723 goto out;
4724 }
4725
4726 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4727 rc = mwl8k_set_radio_preamble(hw,
4728 vif->bss_conf.use_short_preamble);
4729 if (rc)
4730 goto out;
4731 }
4732
4733 if (changed & BSS_CHANGED_ERP_SLOT) {
4734 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4735 if (rc)
4736 goto out;
4737 }
4738
4739 if (vif->bss_conf.assoc &&
4740 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4741 BSS_CHANGED_HT))) {
4742 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4743 if (rc)
4744 goto out;
4745 }
4746
4747 if (vif->bss_conf.assoc &&
4748 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4749 /*
4750 * Finalize the join. Tell rx handler to process
4751 * next beacon from our BSSID.
4752 */
4753 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4754 priv->capture_beacon = true;
4755 }
4756
4757 out:
4758 mwl8k_fw_unlock(hw);
4759 }
4760
4761 static void
4762 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4763 struct ieee80211_bss_conf *info, u32 changed)
4764 {
4765 int rc;
4766
4767 if (mwl8k_fw_lock(hw))
4768 return;
4769
4770 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4771 rc = mwl8k_set_radio_preamble(hw,
4772 vif->bss_conf.use_short_preamble);
4773 if (rc)
4774 goto out;
4775 }
4776
4777 if (changed & BSS_CHANGED_BASIC_RATES) {
4778 int idx;
4779 int rate;
4780
4781 /*
4782 * Use lowest supported basic rate for multicasts
4783 * and management frames (such as probe responses --
4784 * beacons will always go out at 1 Mb/s).
4785 */
4786 idx = ffs(vif->bss_conf.basic_rates);
4787 if (idx)
4788 idx--;
4789
4790 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4791 rate = mwl8k_rates_24[idx].hw_value;
4792 else
4793 rate = mwl8k_rates_50[idx].hw_value;
4794
4795 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4796 }
4797
4798 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4799 struct sk_buff *skb;
4800
4801 skb = ieee80211_beacon_get(hw, vif);
4802 if (skb != NULL) {
4803 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4804 kfree_skb(skb);
4805 }
4806 }
4807
4808 if (changed & BSS_CHANGED_BEACON_ENABLED)
4809 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4810
4811 out:
4812 mwl8k_fw_unlock(hw);
4813 }
4814
4815 static void
4816 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4817 struct ieee80211_bss_conf *info, u32 changed)
4818 {
4819 struct mwl8k_priv *priv = hw->priv;
4820
4821 if (!priv->ap_fw)
4822 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4823 else
4824 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4825 }
4826
4827 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4828 struct netdev_hw_addr_list *mc_list)
4829 {
4830 struct mwl8k_cmd_pkt *cmd;
4831
4832 /*
4833 * Synthesize and return a command packet that programs the
4834 * hardware multicast address filter. At this point we don't
4835 * know whether FIF_ALLMULTI is being requested, but if it is,
4836 * we'll end up throwing this packet away and creating a new
4837 * one in mwl8k_configure_filter().
4838 */
4839 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4840
4841 return (unsigned long)cmd;
4842 }
4843
4844 static int
4845 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4846 unsigned int changed_flags,
4847 unsigned int *total_flags)
4848 {
4849 struct mwl8k_priv *priv = hw->priv;
4850
4851 /*
4852 * Hardware sniffer mode is mutually exclusive with STA
4853 * operation, so refuse to enable sniffer mode if a STA
4854 * interface is active.
4855 */
4856 if (!list_empty(&priv->vif_list)) {
4857 if (net_ratelimit())
4858 wiphy_info(hw->wiphy,
4859 "not enabling sniffer mode because STA interface is active\n");
4860 return 0;
4861 }
4862
4863 if (!priv->sniffer_enabled) {
4864 if (mwl8k_cmd_enable_sniffer(hw, 1))
4865 return 0;
4866 priv->sniffer_enabled = true;
4867 }
4868
4869 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4870 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4871 FIF_OTHER_BSS;
4872
4873 return 1;
4874 }
4875
4876 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4877 {
4878 if (!list_empty(&priv->vif_list))
4879 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4880
4881 return NULL;
4882 }
4883
4884 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4885 unsigned int changed_flags,
4886 unsigned int *total_flags,
4887 u64 multicast)
4888 {
4889 struct mwl8k_priv *priv = hw->priv;
4890 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4891
4892 /*
4893 * AP firmware doesn't allow fine-grained control over
4894 * the receive filter.
4895 */
4896 if (priv->ap_fw) {
4897 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4898 kfree(cmd);
4899 return;
4900 }
4901
4902 /*
4903 * Enable hardware sniffer mode if FIF_CONTROL or
4904 * FIF_OTHER_BSS is requested.
4905 */
4906 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4907 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4908 kfree(cmd);
4909 return;
4910 }
4911
4912 /* Clear unsupported feature flags */
4913 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4914
4915 if (mwl8k_fw_lock(hw)) {
4916 kfree(cmd);
4917 return;
4918 }
4919
4920 if (priv->sniffer_enabled) {
4921 mwl8k_cmd_enable_sniffer(hw, 0);
4922 priv->sniffer_enabled = false;
4923 }
4924
4925 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4926 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4927 /*
4928 * Disable the BSS filter.
4929 */
4930 mwl8k_cmd_set_pre_scan(hw);
4931 } else {
4932 struct mwl8k_vif *mwl8k_vif;
4933 const u8 *bssid;
4934
4935 /*
4936 * Enable the BSS filter.
4937 *
4938 * If there is an active STA interface, use that
4939 * interface's BSSID, otherwise use a dummy one
4940 * (where the OUI part needs to be nonzero for
4941 * the BSSID to be accepted by POST_SCAN).
4942 */
4943 mwl8k_vif = mwl8k_first_vif(priv);
4944 if (mwl8k_vif != NULL)
4945 bssid = mwl8k_vif->vif->bss_conf.bssid;
4946 else
4947 bssid = "\x01\x00\x00\x00\x00\x00";
4948
4949 mwl8k_cmd_set_post_scan(hw, bssid);
4950 }
4951 }
4952
4953 /*
4954 * If FIF_ALLMULTI is being requested, throw away the command
4955 * packet that ->prepare_multicast() built and replace it with
4956 * a command packet that enables reception of all multicast
4957 * packets.
4958 */
4959 if (*total_flags & FIF_ALLMULTI) {
4960 kfree(cmd);
4961 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4962 }
4963
4964 if (cmd != NULL) {
4965 mwl8k_post_cmd(hw, cmd);
4966 kfree(cmd);
4967 }
4968
4969 mwl8k_fw_unlock(hw);
4970 }
4971
4972 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4973 {
4974 return mwl8k_cmd_set_rts_threshold(hw, value);
4975 }
4976
4977 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4978 struct ieee80211_vif *vif,
4979 struct ieee80211_sta *sta)
4980 {
4981 struct mwl8k_priv *priv = hw->priv;
4982
4983 if (priv->ap_fw)
4984 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4985 else
4986 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4987 }
4988
4989 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4990 struct ieee80211_vif *vif,
4991 struct ieee80211_sta *sta)
4992 {
4993 struct mwl8k_priv *priv = hw->priv;
4994 int ret;
4995 int i;
4996 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4997 struct ieee80211_key_conf *key;
4998
4999 if (!priv->ap_fw) {
5000 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5001 if (ret >= 0) {
5002 MWL8K_STA(sta)->peer_id = ret;
5003 if (sta->ht_cap.ht_supported)
5004 MWL8K_STA(sta)->is_ampdu_allowed = true;
5005 ret = 0;
5006 }
5007
5008 } else {
5009 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5010 }
5011
5012 for (i = 0; i < NUM_WEP_KEYS; i++) {
5013 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5014 if (mwl8k_vif->wep_key_conf[i].enabled)
5015 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5016 }
5017 return ret;
5018 }
5019
5020 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5021 struct ieee80211_vif *vif, u16 queue,
5022 const struct ieee80211_tx_queue_params *params)
5023 {
5024 struct mwl8k_priv *priv = hw->priv;
5025 int rc;
5026
5027 rc = mwl8k_fw_lock(hw);
5028 if (!rc) {
5029 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5030 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5031
5032 if (!priv->wmm_enabled)
5033 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5034
5035 if (!rc) {
5036 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5037 rc = mwl8k_cmd_set_edca_params(hw, q,
5038 params->cw_min,
5039 params->cw_max,
5040 params->aifs,
5041 params->txop);
5042 }
5043
5044 mwl8k_fw_unlock(hw);
5045 }
5046
5047 return rc;
5048 }
5049
5050 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5051 struct ieee80211_low_level_stats *stats)
5052 {
5053 return mwl8k_cmd_get_stat(hw, stats);
5054 }
5055
5056 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5057 struct survey_info *survey)
5058 {
5059 struct mwl8k_priv *priv = hw->priv;
5060 struct ieee80211_conf *conf = &hw->conf;
5061
5062 if (idx != 0)
5063 return -ENOENT;
5064
5065 survey->channel = conf->channel;
5066 survey->filled = SURVEY_INFO_NOISE_DBM;
5067 survey->noise = priv->noise;
5068
5069 return 0;
5070 }
5071
5072 #define MAX_AMPDU_ATTEMPTS 5
5073
5074 static int
5075 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5076 enum ieee80211_ampdu_mlme_action action,
5077 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5078 u8 buf_size)
5079 {
5080
5081 int i, rc = 0;
5082 struct mwl8k_priv *priv = hw->priv;
5083 struct mwl8k_ampdu_stream *stream;
5084 u8 *addr = sta->addr;
5085
5086 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5087 return -ENOTSUPP;
5088
5089 spin_lock(&priv->stream_lock);
5090 stream = mwl8k_lookup_stream(hw, addr, tid);
5091
5092 switch (action) {
5093 case IEEE80211_AMPDU_RX_START:
5094 case IEEE80211_AMPDU_RX_STOP:
5095 break;
5096 case IEEE80211_AMPDU_TX_START:
5097 /* By the time we get here the hw queues may contain outgoing
5098 * packets for this RA/TID that are not part of this BA
5099 * session. The hw will assign sequence numbers to these
5100 * packets as they go out. So if we query the hw for its next
5101 * sequence number and use that for the SSN here, it may end up
5102 * being wrong, which will lead to sequence number mismatch at
5103 * the recipient. To avoid this, we reset the sequence number
5104 * to O for the first MPDU in this BA stream.
5105 */
5106 *ssn = 0;
5107 if (stream == NULL) {
5108 /* This means that somebody outside this driver called
5109 * ieee80211_start_tx_ba_session. This is unexpected
5110 * because we do our own rate control. Just warn and
5111 * move on.
5112 */
5113 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5114 "Proceeding anyway.\n", __func__);
5115 stream = mwl8k_add_stream(hw, sta, tid);
5116 }
5117 if (stream == NULL) {
5118 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5119 rc = -EBUSY;
5120 break;
5121 }
5122 stream->state = AMPDU_STREAM_IN_PROGRESS;
5123
5124 /* Release the lock before we do the time consuming stuff */
5125 spin_unlock(&priv->stream_lock);
5126 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5127 rc = mwl8k_check_ba(hw, stream);
5128
5129 /* If HW restart is in progress mwl8k_post_cmd will
5130 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5131 * such cases
5132 */
5133 if (!rc || rc == -EBUSY)
5134 break;
5135 /*
5136 * HW queues take time to be flushed, give them
5137 * sufficient time
5138 */
5139
5140 msleep(1000);
5141 }
5142 spin_lock(&priv->stream_lock);
5143 if (rc) {
5144 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5145 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5146 mwl8k_remove_stream(hw, stream);
5147 rc = -EBUSY;
5148 break;
5149 }
5150 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5151 break;
5152 case IEEE80211_AMPDU_TX_STOP:
5153 if (stream) {
5154 if (stream->state == AMPDU_STREAM_ACTIVE) {
5155 spin_unlock(&priv->stream_lock);
5156 mwl8k_destroy_ba(hw, stream);
5157 spin_lock(&priv->stream_lock);
5158 }
5159 mwl8k_remove_stream(hw, stream);
5160 }
5161 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5162 break;
5163 case IEEE80211_AMPDU_TX_OPERATIONAL:
5164 BUG_ON(stream == NULL);
5165 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5166 spin_unlock(&priv->stream_lock);
5167 rc = mwl8k_create_ba(hw, stream, buf_size);
5168 spin_lock(&priv->stream_lock);
5169 if (!rc)
5170 stream->state = AMPDU_STREAM_ACTIVE;
5171 else {
5172 spin_unlock(&priv->stream_lock);
5173 mwl8k_destroy_ba(hw, stream);
5174 spin_lock(&priv->stream_lock);
5175 wiphy_debug(hw->wiphy,
5176 "Failed adding stream for sta %pM tid %d\n",
5177 addr, tid);
5178 mwl8k_remove_stream(hw, stream);
5179 }
5180 break;
5181
5182 default:
5183 rc = -ENOTSUPP;
5184 }
5185
5186 spin_unlock(&priv->stream_lock);
5187 return rc;
5188 }
5189
5190 static const struct ieee80211_ops mwl8k_ops = {
5191 .tx = mwl8k_tx,
5192 .start = mwl8k_start,
5193 .stop = mwl8k_stop,
5194 .add_interface = mwl8k_add_interface,
5195 .remove_interface = mwl8k_remove_interface,
5196 .config = mwl8k_config,
5197 .bss_info_changed = mwl8k_bss_info_changed,
5198 .prepare_multicast = mwl8k_prepare_multicast,
5199 .configure_filter = mwl8k_configure_filter,
5200 .set_key = mwl8k_set_key,
5201 .set_rts_threshold = mwl8k_set_rts_threshold,
5202 .sta_add = mwl8k_sta_add,
5203 .sta_remove = mwl8k_sta_remove,
5204 .conf_tx = mwl8k_conf_tx,
5205 .get_stats = mwl8k_get_stats,
5206 .get_survey = mwl8k_get_survey,
5207 .ampdu_action = mwl8k_ampdu_action,
5208 };
5209
5210 static void mwl8k_finalize_join_worker(struct work_struct *work)
5211 {
5212 struct mwl8k_priv *priv =
5213 container_of(work, struct mwl8k_priv, finalize_join_worker);
5214 struct sk_buff *skb = priv->beacon_skb;
5215 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5216 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5217 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5218 mgmt->u.beacon.variable, len);
5219 int dtim_period = 1;
5220
5221 if (tim && tim[1] >= 2)
5222 dtim_period = tim[3];
5223
5224 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5225
5226 dev_kfree_skb(skb);
5227 priv->beacon_skb = NULL;
5228 }
5229
5230 enum {
5231 MWL8363 = 0,
5232 MWL8687,
5233 MWL8366,
5234 };
5235
5236 #define MWL8K_8366_AP_FW_API 2
5237 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5238 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5239
5240 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5241 [MWL8363] = {
5242 .part_name = "88w8363",
5243 .helper_image = "mwl8k/helper_8363.fw",
5244 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5245 },
5246 [MWL8687] = {
5247 .part_name = "88w8687",
5248 .helper_image = "mwl8k/helper_8687.fw",
5249 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5250 },
5251 [MWL8366] = {
5252 .part_name = "88w8366",
5253 .helper_image = "mwl8k/helper_8366.fw",
5254 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5255 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5256 .fw_api_ap = MWL8K_8366_AP_FW_API,
5257 .ap_rxd_ops = &rxd_8366_ap_ops,
5258 },
5259 };
5260
5261 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5262 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5263 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5264 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5265 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5266 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5267 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5268
5269 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5270 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5271 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5272 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5273 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5274 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5275 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5276 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5277 { },
5278 };
5279 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5280
5281 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5282 {
5283 int rc;
5284 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5285 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5286 priv->fw_pref, priv->fw_alt);
5287 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5288 if (rc) {
5289 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5290 pci_name(priv->pdev), priv->fw_alt);
5291 return rc;
5292 }
5293 return 0;
5294 }
5295
5296 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5297 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5298 {
5299 struct mwl8k_priv *priv = context;
5300 struct mwl8k_device_info *di = priv->device_info;
5301 int rc;
5302
5303 switch (priv->fw_state) {
5304 case FW_STATE_INIT:
5305 if (!fw) {
5306 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5307 pci_name(priv->pdev), di->helper_image);
5308 goto fail;
5309 }
5310 priv->fw_helper = fw;
5311 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5312 true);
5313 if (rc && priv->fw_alt) {
5314 rc = mwl8k_request_alt_fw(priv);
5315 if (rc)
5316 goto fail;
5317 priv->fw_state = FW_STATE_LOADING_ALT;
5318 } else if (rc)
5319 goto fail;
5320 else
5321 priv->fw_state = FW_STATE_LOADING_PREF;
5322 break;
5323
5324 case FW_STATE_LOADING_PREF:
5325 if (!fw) {
5326 if (priv->fw_alt) {
5327 rc = mwl8k_request_alt_fw(priv);
5328 if (rc)
5329 goto fail;
5330 priv->fw_state = FW_STATE_LOADING_ALT;
5331 } else
5332 goto fail;
5333 } else {
5334 priv->fw_ucode = fw;
5335 rc = mwl8k_firmware_load_success(priv);
5336 if (rc)
5337 goto fail;
5338 else
5339 complete(&priv->firmware_loading_complete);
5340 }
5341 break;
5342
5343 case FW_STATE_LOADING_ALT:
5344 if (!fw) {
5345 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5346 pci_name(priv->pdev), di->helper_image);
5347 goto fail;
5348 }
5349 priv->fw_ucode = fw;
5350 rc = mwl8k_firmware_load_success(priv);
5351 if (rc)
5352 goto fail;
5353 else
5354 complete(&priv->firmware_loading_complete);
5355 break;
5356
5357 default:
5358 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5359 MWL8K_NAME, priv->fw_state);
5360 BUG_ON(1);
5361 }
5362
5363 return;
5364
5365 fail:
5366 priv->fw_state = FW_STATE_ERROR;
5367 complete(&priv->firmware_loading_complete);
5368 device_release_driver(&priv->pdev->dev);
5369 mwl8k_release_firmware(priv);
5370 }
5371
5372 #define MAX_RESTART_ATTEMPTS 1
5373 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5374 bool nowait)
5375 {
5376 struct mwl8k_priv *priv = hw->priv;
5377 int rc;
5378 int count = MAX_RESTART_ATTEMPTS;
5379
5380 retry:
5381 /* Reset firmware and hardware */
5382 mwl8k_hw_reset(priv);
5383
5384 /* Ask userland hotplug daemon for the device firmware */
5385 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5386 if (rc) {
5387 wiphy_err(hw->wiphy, "Firmware files not found\n");
5388 return rc;
5389 }
5390
5391 if (nowait)
5392 return rc;
5393
5394 /* Load firmware into hardware */
5395 rc = mwl8k_load_firmware(hw);
5396 if (rc)
5397 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5398
5399 /* Reclaim memory once firmware is successfully loaded */
5400 mwl8k_release_firmware(priv);
5401
5402 if (rc && count) {
5403 /* FW did not start successfully;
5404 * lets try one more time
5405 */
5406 count--;
5407 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5408 msleep(20);
5409 goto retry;
5410 }
5411
5412 return rc;
5413 }
5414
5415 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5416 {
5417 struct mwl8k_priv *priv = hw->priv;
5418 int rc = 0;
5419 int i;
5420
5421 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5422 rc = mwl8k_txq_init(hw, i);
5423 if (rc)
5424 break;
5425 if (priv->ap_fw)
5426 iowrite32(priv->txq[i].txd_dma,
5427 priv->sram + priv->txq_offset[i]);
5428 }
5429 return rc;
5430 }
5431
5432 /* initialize hw after successfully loading a firmware image */
5433 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5434 {
5435 struct mwl8k_priv *priv = hw->priv;
5436 int rc = 0;
5437 int i;
5438
5439 if (priv->ap_fw) {
5440 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5441 if (priv->rxd_ops == NULL) {
5442 wiphy_err(hw->wiphy,
5443 "Driver does not have AP firmware image support for this hardware\n");
5444 goto err_stop_firmware;
5445 }
5446 } else {
5447 priv->rxd_ops = &rxd_sta_ops;
5448 }
5449
5450 priv->sniffer_enabled = false;
5451 priv->wmm_enabled = false;
5452 priv->pending_tx_pkts = 0;
5453
5454 rc = mwl8k_rxq_init(hw, 0);
5455 if (rc)
5456 goto err_stop_firmware;
5457 rxq_refill(hw, 0, INT_MAX);
5458
5459 /* For the sta firmware, we need to know the dma addresses of tx queues
5460 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5461 * prior to issuing this command. But for the AP case, we learn the
5462 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5463 * case we must initialize the tx queues after.
5464 */
5465 priv->num_ampdu_queues = 0;
5466 if (!priv->ap_fw) {
5467 rc = mwl8k_init_txqs(hw);
5468 if (rc)
5469 goto err_free_queues;
5470 }
5471
5472 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5473 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5474 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5475 MWL8K_A2H_INT_BA_WATCHDOG,
5476 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5477 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5478 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5479
5480 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5481 IRQF_SHARED, MWL8K_NAME, hw);
5482 if (rc) {
5483 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5484 goto err_free_queues;
5485 }
5486
5487 /*
5488 * When hw restart is requested,
5489 * mac80211 will take care of clearing
5490 * the ampdu streams, so do not clear
5491 * the ampdu state here
5492 */
5493 if (!priv->hw_restart_in_progress)
5494 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5495
5496 /*
5497 * Temporarily enable interrupts. Initial firmware host
5498 * commands use interrupts and avoid polling. Disable
5499 * interrupts when done.
5500 */
5501 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5502
5503 /* Get config data, mac addrs etc */
5504 if (priv->ap_fw) {
5505 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5506 if (!rc)
5507 rc = mwl8k_init_txqs(hw);
5508 if (!rc)
5509 rc = mwl8k_cmd_set_hw_spec(hw);
5510 } else {
5511 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5512 }
5513 if (rc) {
5514 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5515 goto err_free_irq;
5516 }
5517
5518 /* Turn radio off */
5519 rc = mwl8k_cmd_radio_disable(hw);
5520 if (rc) {
5521 wiphy_err(hw->wiphy, "Cannot disable\n");
5522 goto err_free_irq;
5523 }
5524
5525 /* Clear MAC address */
5526 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5527 if (rc) {
5528 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5529 goto err_free_irq;
5530 }
5531
5532 /* Disable interrupts */
5533 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5534 free_irq(priv->pdev->irq, hw);
5535
5536 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5537 priv->device_info->part_name,
5538 priv->hw_rev, hw->wiphy->perm_addr,
5539 priv->ap_fw ? "AP" : "STA",
5540 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5541 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5542
5543 return 0;
5544
5545 err_free_irq:
5546 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5547 free_irq(priv->pdev->irq, hw);
5548
5549 err_free_queues:
5550 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5551 mwl8k_txq_deinit(hw, i);
5552 mwl8k_rxq_deinit(hw, 0);
5553
5554 err_stop_firmware:
5555 mwl8k_hw_reset(priv);
5556
5557 return rc;
5558 }
5559
5560 /*
5561 * invoke mwl8k_reload_firmware to change the firmware image after the device
5562 * has already been registered
5563 */
5564 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5565 {
5566 int i, rc = 0;
5567 struct mwl8k_priv *priv = hw->priv;
5568 struct mwl8k_vif *vif, *tmp_vif;
5569
5570 mwl8k_stop(hw);
5571 mwl8k_rxq_deinit(hw, 0);
5572
5573 /*
5574 * All the existing interfaces are re-added by the ieee80211_reconfig;
5575 * which means driver should remove existing interfaces before calling
5576 * ieee80211_restart_hw
5577 */
5578 if (priv->hw_restart_in_progress)
5579 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5580 mwl8k_remove_vif(priv, vif);
5581
5582 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5583 mwl8k_txq_deinit(hw, i);
5584
5585 rc = mwl8k_init_firmware(hw, fw_image, false);
5586 if (rc)
5587 goto fail;
5588
5589 rc = mwl8k_probe_hw(hw);
5590 if (rc)
5591 goto fail;
5592
5593 if (priv->hw_restart_in_progress)
5594 return rc;
5595
5596 rc = mwl8k_start(hw);
5597 if (rc)
5598 goto fail;
5599
5600 rc = mwl8k_config(hw, ~0);
5601 if (rc)
5602 goto fail;
5603
5604 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5605 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5606 if (rc)
5607 goto fail;
5608 }
5609
5610 return rc;
5611
5612 fail:
5613 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5614 return rc;
5615 }
5616
5617 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5618 {
5619 struct ieee80211_hw *hw = priv->hw;
5620 int i, rc;
5621
5622 rc = mwl8k_load_firmware(hw);
5623 mwl8k_release_firmware(priv);
5624 if (rc) {
5625 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5626 return rc;
5627 }
5628
5629 /*
5630 * Extra headroom is the size of the required DMA header
5631 * minus the size of the smallest 802.11 frame (CTS frame).
5632 */
5633 hw->extra_tx_headroom =
5634 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5635
5636 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5637
5638 hw->channel_change_time = 10;
5639
5640 hw->queues = MWL8K_TX_WMM_QUEUES;
5641
5642 /* Set rssi values to dBm */
5643 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5644
5645 /*
5646 * Ask mac80211 to not to trigger PS mode
5647 * based on PM bit of incoming frames.
5648 */
5649 if (priv->ap_fw)
5650 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5651
5652 hw->vif_data_size = sizeof(struct mwl8k_vif);
5653 hw->sta_data_size = sizeof(struct mwl8k_sta);
5654
5655 priv->macids_used = 0;
5656 INIT_LIST_HEAD(&priv->vif_list);
5657
5658 /* Set default radio state and preamble */
5659 priv->radio_on = false;
5660 priv->radio_short_preamble = false;
5661
5662 /* Finalize join worker */
5663 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5664 /* Handle watchdog ba events */
5665 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5666 /* To reload the firmware if it crashes */
5667 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5668
5669 /* TX reclaim and RX tasklets. */
5670 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5671 tasklet_disable(&priv->poll_tx_task);
5672 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5673 tasklet_disable(&priv->poll_rx_task);
5674
5675 /* Power management cookie */
5676 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5677 if (priv->cookie == NULL)
5678 return -ENOMEM;
5679
5680 mutex_init(&priv->fw_mutex);
5681 priv->fw_mutex_owner = NULL;
5682 priv->fw_mutex_depth = 0;
5683 priv->hostcmd_wait = NULL;
5684
5685 spin_lock_init(&priv->tx_lock);
5686
5687 spin_lock_init(&priv->stream_lock);
5688
5689 priv->tx_wait = NULL;
5690
5691 rc = mwl8k_probe_hw(hw);
5692 if (rc)
5693 goto err_free_cookie;
5694
5695 hw->wiphy->interface_modes = 0;
5696 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5697 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5698 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5699 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5700
5701 rc = ieee80211_register_hw(hw);
5702 if (rc) {
5703 wiphy_err(hw->wiphy, "Cannot register device\n");
5704 goto err_unprobe_hw;
5705 }
5706
5707 return 0;
5708
5709 err_unprobe_hw:
5710 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5711 mwl8k_txq_deinit(hw, i);
5712 mwl8k_rxq_deinit(hw, 0);
5713
5714 err_free_cookie:
5715 if (priv->cookie != NULL)
5716 pci_free_consistent(priv->pdev, 4,
5717 priv->cookie, priv->cookie_dma);
5718
5719 return rc;
5720 }
5721 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5722 const struct pci_device_id *id)
5723 {
5724 static int printed_version;
5725 struct ieee80211_hw *hw;
5726 struct mwl8k_priv *priv;
5727 struct mwl8k_device_info *di;
5728 int rc;
5729
5730 if (!printed_version) {
5731 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5732 printed_version = 1;
5733 }
5734
5735
5736 rc = pci_enable_device(pdev);
5737 if (rc) {
5738 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5739 MWL8K_NAME);
5740 return rc;
5741 }
5742
5743 rc = pci_request_regions(pdev, MWL8K_NAME);
5744 if (rc) {
5745 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5746 MWL8K_NAME);
5747 goto err_disable_device;
5748 }
5749
5750 pci_set_master(pdev);
5751
5752
5753 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5754 if (hw == NULL) {
5755 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5756 rc = -ENOMEM;
5757 goto err_free_reg;
5758 }
5759
5760 SET_IEEE80211_DEV(hw, &pdev->dev);
5761 pci_set_drvdata(pdev, hw);
5762
5763 priv = hw->priv;
5764 priv->hw = hw;
5765 priv->pdev = pdev;
5766 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5767
5768
5769 priv->sram = pci_iomap(pdev, 0, 0x10000);
5770 if (priv->sram == NULL) {
5771 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5772 goto err_iounmap;
5773 }
5774
5775 /*
5776 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5777 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5778 */
5779 priv->regs = pci_iomap(pdev, 1, 0x10000);
5780 if (priv->regs == NULL) {
5781 priv->regs = pci_iomap(pdev, 2, 0x10000);
5782 if (priv->regs == NULL) {
5783 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5784 goto err_iounmap;
5785 }
5786 }
5787
5788 /*
5789 * Choose the initial fw image depending on user input. If a second
5790 * image is available, make it the alternative image that will be
5791 * loaded if the first one fails.
5792 */
5793 init_completion(&priv->firmware_loading_complete);
5794 di = priv->device_info;
5795 if (ap_mode_default && di->fw_image_ap) {
5796 priv->fw_pref = di->fw_image_ap;
5797 priv->fw_alt = di->fw_image_sta;
5798 } else if (!ap_mode_default && di->fw_image_sta) {
5799 priv->fw_pref = di->fw_image_sta;
5800 priv->fw_alt = di->fw_image_ap;
5801 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5802 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5803 priv->fw_pref = di->fw_image_sta;
5804 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5805 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5806 priv->fw_pref = di->fw_image_ap;
5807 }
5808 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5809 if (rc)
5810 goto err_stop_firmware;
5811
5812 priv->hw_restart_in_progress = false;
5813
5814 return rc;
5815
5816 err_stop_firmware:
5817 mwl8k_hw_reset(priv);
5818
5819 err_iounmap:
5820 if (priv->regs != NULL)
5821 pci_iounmap(pdev, priv->regs);
5822
5823 if (priv->sram != NULL)
5824 pci_iounmap(pdev, priv->sram);
5825
5826 pci_set_drvdata(pdev, NULL);
5827 ieee80211_free_hw(hw);
5828
5829 err_free_reg:
5830 pci_release_regions(pdev);
5831
5832 err_disable_device:
5833 pci_disable_device(pdev);
5834
5835 return rc;
5836 }
5837
5838 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5839 {
5840 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5841 }
5842
5843 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5844 {
5845 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5846 struct mwl8k_priv *priv;
5847 int i;
5848
5849 if (hw == NULL)
5850 return;
5851 priv = hw->priv;
5852
5853 wait_for_completion(&priv->firmware_loading_complete);
5854
5855 if (priv->fw_state == FW_STATE_ERROR) {
5856 mwl8k_hw_reset(priv);
5857 goto unmap;
5858 }
5859
5860 ieee80211_stop_queues(hw);
5861
5862 ieee80211_unregister_hw(hw);
5863
5864 /* Remove TX reclaim and RX tasklets. */
5865 tasklet_kill(&priv->poll_tx_task);
5866 tasklet_kill(&priv->poll_rx_task);
5867
5868 /* Stop hardware */
5869 mwl8k_hw_reset(priv);
5870
5871 /* Return all skbs to mac80211 */
5872 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5873 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5874
5875 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5876 mwl8k_txq_deinit(hw, i);
5877
5878 mwl8k_rxq_deinit(hw, 0);
5879
5880 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5881
5882 unmap:
5883 pci_iounmap(pdev, priv->regs);
5884 pci_iounmap(pdev, priv->sram);
5885 pci_set_drvdata(pdev, NULL);
5886 ieee80211_free_hw(hw);
5887 pci_release_regions(pdev);
5888 pci_disable_device(pdev);
5889 }
5890
5891 static struct pci_driver mwl8k_driver = {
5892 .name = MWL8K_NAME,
5893 .id_table = mwl8k_pci_id_table,
5894 .probe = mwl8k_probe,
5895 .remove = __devexit_p(mwl8k_remove),
5896 .shutdown = __devexit_p(mwl8k_shutdown),
5897 };
5898
5899 module_pci_driver(mwl8k_driver);
5900
5901 MODULE_DESCRIPTION(MWL8K_DESC);
5902 MODULE_VERSION(MWL8K_VERSION);
5903 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5904 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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