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iwlwifi: don't mess up the SCD when removing a key
[GitHub/mt8127/android_kernel_alcatel_ttab.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 sta = info->control.sta;
1669 if (sta) {
1670 sta_info = MWL8K_STA(sta);
1671 BUG_ON(sta_info == NULL);
1672 rate_info = le16_to_cpu(tx_desc->rate_info);
1673 /* If rate is < 6.5 Mpbs for an ht station
1674 * do not form an ampdu. If the station is a
1675 * legacy station (format = 0), do not form an
1676 * ampdu
1677 */
1678 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1679 RI_FORMAT(rate_info) == 0) {
1680 sta_info->is_ampdu_allowed = false;
1681 } else {
1682 sta_info->is_ampdu_allowed = true;
1683 }
1684 }
1685 }
1686
1687 ieee80211_tx_info_clear_status(info);
1688
1689 /* Rate control is happening in the firmware.
1690 * Ensure no tx rate is being reported.
1691 */
1692 info->status.rates[0].idx = -1;
1693 info->status.rates[0].count = 1;
1694
1695 if (MWL8K_TXD_SUCCESS(status))
1696 info->flags |= IEEE80211_TX_STAT_ACK;
1697
1698 ieee80211_tx_status_irqsafe(hw, skb);
1699
1700 processed++;
1701 }
1702
1703 return processed;
1704 }
1705
1706 /* must be called only when the card's transmit is completely halted */
1707 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1708 {
1709 struct mwl8k_priv *priv = hw->priv;
1710 struct mwl8k_tx_queue *txq = priv->txq + index;
1711
1712 if (txq->txd == NULL)
1713 return;
1714
1715 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1716
1717 kfree(txq->skb);
1718 txq->skb = NULL;
1719
1720 pci_free_consistent(priv->pdev,
1721 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1722 txq->txd, txq->txd_dma);
1723 txq->txd = NULL;
1724 }
1725
1726 /* caller must hold priv->stream_lock when calling the stream functions */
1727 static struct mwl8k_ampdu_stream *
1728 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1729 {
1730 struct mwl8k_ampdu_stream *stream;
1731 struct mwl8k_priv *priv = hw->priv;
1732 int i;
1733
1734 for (i = 0; i < priv->num_ampdu_queues; i++) {
1735 stream = &priv->ampdu[i];
1736 if (stream->state == AMPDU_NO_STREAM) {
1737 stream->sta = sta;
1738 stream->state = AMPDU_STREAM_NEW;
1739 stream->tid = tid;
1740 stream->idx = i;
1741 stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1742 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1743 sta->addr, tid);
1744 return stream;
1745 }
1746 }
1747 return NULL;
1748 }
1749
1750 static int
1751 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1752 {
1753 int ret;
1754
1755 /* if the stream has already been started, don't start it again */
1756 if (stream->state != AMPDU_STREAM_NEW)
1757 return 0;
1758 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1759 if (ret)
1760 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1761 "%d\n", stream->sta->addr, stream->tid, ret);
1762 else
1763 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1764 stream->sta->addr, stream->tid);
1765 return ret;
1766 }
1767
1768 static void
1769 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1770 {
1771 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1772 stream->tid);
1773 memset(stream, 0, sizeof(*stream));
1774 }
1775
1776 static struct mwl8k_ampdu_stream *
1777 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1778 {
1779 struct mwl8k_priv *priv = hw->priv;
1780 int i;
1781
1782 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1783 struct mwl8k_ampdu_stream *stream;
1784 stream = &priv->ampdu[i];
1785 if (stream->state == AMPDU_NO_STREAM)
1786 continue;
1787 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1788 stream->tid == tid)
1789 return stream;
1790 }
1791 return NULL;
1792 }
1793
1794 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1795 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1796 {
1797 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1798 struct tx_traffic_info *tx_stats;
1799
1800 BUG_ON(tid >= MWL8K_MAX_TID);
1801 tx_stats = &sta_info->tx_stats[tid];
1802
1803 return sta_info->is_ampdu_allowed &&
1804 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1805 }
1806
1807 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1808 {
1809 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1810 struct tx_traffic_info *tx_stats;
1811
1812 BUG_ON(tid >= MWL8K_MAX_TID);
1813 tx_stats = &sta_info->tx_stats[tid];
1814
1815 if (tx_stats->start_time == 0)
1816 tx_stats->start_time = jiffies;
1817
1818 /* reset the packet count after each second elapses. If the number of
1819 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1820 * an ampdu stream to be started.
1821 */
1822 if (jiffies - tx_stats->start_time > HZ) {
1823 tx_stats->pkts = 0;
1824 tx_stats->start_time = 0;
1825 } else
1826 tx_stats->pkts++;
1827 }
1828
1829 static void
1830 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1831 {
1832 struct mwl8k_priv *priv = hw->priv;
1833 struct ieee80211_tx_info *tx_info;
1834 struct mwl8k_vif *mwl8k_vif;
1835 struct ieee80211_sta *sta;
1836 struct ieee80211_hdr *wh;
1837 struct mwl8k_tx_queue *txq;
1838 struct mwl8k_tx_desc *tx;
1839 dma_addr_t dma;
1840 u32 txstatus;
1841 u8 txdatarate;
1842 u16 qos;
1843 int txpriority;
1844 u8 tid = 0;
1845 struct mwl8k_ampdu_stream *stream = NULL;
1846 bool start_ba_session = false;
1847 bool mgmtframe = false;
1848 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1849
1850 wh = (struct ieee80211_hdr *)skb->data;
1851 if (ieee80211_is_data_qos(wh->frame_control))
1852 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1853 else
1854 qos = 0;
1855
1856 if (ieee80211_is_mgmt(wh->frame_control))
1857 mgmtframe = true;
1858
1859 if (priv->ap_fw)
1860 mwl8k_encapsulate_tx_frame(priv, skb);
1861 else
1862 mwl8k_add_dma_header(priv, skb, 0, 0);
1863
1864 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1865
1866 tx_info = IEEE80211_SKB_CB(skb);
1867 sta = tx_info->control.sta;
1868 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1869
1870 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1871 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1872 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1873 mwl8k_vif->seqno += 0x10;
1874 }
1875
1876 /* Setup firmware control bit fields for each frame type. */
1877 txstatus = 0;
1878 txdatarate = 0;
1879 if (ieee80211_is_mgmt(wh->frame_control) ||
1880 ieee80211_is_ctl(wh->frame_control)) {
1881 txdatarate = 0;
1882 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1883 } else if (ieee80211_is_data(wh->frame_control)) {
1884 txdatarate = 1;
1885 if (is_multicast_ether_addr(wh->addr1))
1886 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1887
1888 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1889 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1890 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1891 else
1892 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1893 }
1894
1895 /* Queue ADDBA request in the respective data queue. While setting up
1896 * the ampdu stream, mac80211 queues further packets for that
1897 * particular ra/tid pair. However, packets piled up in the hardware
1898 * for that ra/tid pair will still go out. ADDBA request and the
1899 * related data packets going out from different queues asynchronously
1900 * will cause a shift in the receiver window which might result in
1901 * ampdu packets getting dropped at the receiver after the stream has
1902 * been setup.
1903 */
1904 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1905 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1906 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1907 priv->ap_fw)) {
1908 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1909 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1910 index = mwl8k_tid_queue_mapping(tid);
1911 }
1912
1913 txpriority = index;
1914
1915 if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1916 && skb->protocol != cpu_to_be16(ETH_P_PAE)
1917 && ieee80211_is_data_qos(wh->frame_control)) {
1918 tid = qos & 0xf;
1919 mwl8k_tx_count_packet(sta, tid);
1920 spin_lock(&priv->stream_lock);
1921 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1922 if (stream != NULL) {
1923 if (stream->state == AMPDU_STREAM_ACTIVE) {
1924 txpriority = stream->txq_idx;
1925 index = stream->txq_idx;
1926 } else if (stream->state == AMPDU_STREAM_NEW) {
1927 /* We get here if the driver sends us packets
1928 * after we've initiated a stream, but before
1929 * our ampdu_action routine has been called
1930 * with IEEE80211_AMPDU_TX_START to get the SSN
1931 * for the ADDBA request. So this packet can
1932 * go out with no risk of sequence number
1933 * mismatch. No special handling is required.
1934 */
1935 } else {
1936 /* Drop packets that would go out after the
1937 * ADDBA request was sent but before the ADDBA
1938 * response is received. If we don't do this,
1939 * the recipient would probably receive it
1940 * after the ADDBA request with SSN 0. This
1941 * will cause the recipient's BA receive window
1942 * to shift, which would cause the subsequent
1943 * packets in the BA stream to be discarded.
1944 * mac80211 queues our packets for us in this
1945 * case, so this is really just a safety check.
1946 */
1947 wiphy_warn(hw->wiphy,
1948 "Cannot send packet while ADDBA "
1949 "dialog is underway.\n");
1950 spin_unlock(&priv->stream_lock);
1951 dev_kfree_skb(skb);
1952 return;
1953 }
1954 } else {
1955 /* Defer calling mwl8k_start_stream so that the current
1956 * skb can go out before the ADDBA request. This
1957 * prevents sequence number mismatch at the recepient
1958 * as described above.
1959 */
1960 if (mwl8k_ampdu_allowed(sta, tid)) {
1961 stream = mwl8k_add_stream(hw, sta, tid);
1962 if (stream != NULL)
1963 start_ba_session = true;
1964 }
1965 }
1966 spin_unlock(&priv->stream_lock);
1967 }
1968
1969 dma = pci_map_single(priv->pdev, skb->data,
1970 skb->len, PCI_DMA_TODEVICE);
1971
1972 if (pci_dma_mapping_error(priv->pdev, dma)) {
1973 wiphy_debug(hw->wiphy,
1974 "failed to dma map skb, dropping TX frame.\n");
1975 if (start_ba_session) {
1976 spin_lock(&priv->stream_lock);
1977 mwl8k_remove_stream(hw, stream);
1978 spin_unlock(&priv->stream_lock);
1979 }
1980 dev_kfree_skb(skb);
1981 return;
1982 }
1983
1984 spin_lock_bh(&priv->tx_lock);
1985
1986 txq = priv->txq + index;
1987
1988 /* Mgmt frames that go out frequently are probe
1989 * responses. Other mgmt frames got out relatively
1990 * infrequently. Hence reserve 2 buffers so that
1991 * other mgmt frames do not get dropped due to an
1992 * already queued probe response in one of the
1993 * reserved buffers.
1994 */
1995
1996 if (txq->len >= MWL8K_TX_DESCS - 2) {
1997 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
1998 if (start_ba_session) {
1999 spin_lock(&priv->stream_lock);
2000 mwl8k_remove_stream(hw, stream);
2001 spin_unlock(&priv->stream_lock);
2002 }
2003 spin_unlock_bh(&priv->tx_lock);
2004 dev_kfree_skb(skb);
2005 return;
2006 }
2007 }
2008
2009 BUG_ON(txq->skb[txq->tail] != NULL);
2010 txq->skb[txq->tail] = skb;
2011
2012 tx = txq->txd + txq->tail;
2013 tx->data_rate = txdatarate;
2014 tx->tx_priority = txpriority;
2015 tx->qos_control = cpu_to_le16(qos);
2016 tx->pkt_phys_addr = cpu_to_le32(dma);
2017 tx->pkt_len = cpu_to_le16(skb->len);
2018 tx->rate_info = 0;
2019 if (!priv->ap_fw && tx_info->control.sta != NULL)
2020 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2021 else
2022 tx->peer_id = 0;
2023
2024 if (priv->ap_fw)
2025 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2026 MWL8K_HW_TIMER_REGISTER));
2027
2028 wmb();
2029 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2030
2031 txq->len++;
2032 priv->pending_tx_pkts++;
2033
2034 txq->tail++;
2035 if (txq->tail == MWL8K_TX_DESCS)
2036 txq->tail = 0;
2037
2038 mwl8k_tx_start(priv);
2039
2040 spin_unlock_bh(&priv->tx_lock);
2041
2042 /* Initiate the ampdu session here */
2043 if (start_ba_session) {
2044 spin_lock(&priv->stream_lock);
2045 if (mwl8k_start_stream(hw, stream))
2046 mwl8k_remove_stream(hw, stream);
2047 spin_unlock(&priv->stream_lock);
2048 }
2049 }
2050
2051
2052 /*
2053 * Firmware access.
2054 *
2055 * We have the following requirements for issuing firmware commands:
2056 * - Some commands require that the packet transmit path is idle when
2057 * the command is issued. (For simplicity, we'll just quiesce the
2058 * transmit path for every command.)
2059 * - There are certain sequences of commands that need to be issued to
2060 * the hardware sequentially, with no other intervening commands.
2061 *
2062 * This leads to an implementation of a "firmware lock" as a mutex that
2063 * can be taken recursively, and which is taken by both the low-level
2064 * command submission function (mwl8k_post_cmd) as well as any users of
2065 * that function that require issuing of an atomic sequence of commands,
2066 * and quiesces the transmit path whenever it's taken.
2067 */
2068 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2069 {
2070 struct mwl8k_priv *priv = hw->priv;
2071
2072 if (priv->fw_mutex_owner != current) {
2073 int rc;
2074
2075 mutex_lock(&priv->fw_mutex);
2076 ieee80211_stop_queues(hw);
2077
2078 rc = mwl8k_tx_wait_empty(hw);
2079 if (rc) {
2080 if (!priv->hw_restart_in_progress)
2081 ieee80211_wake_queues(hw);
2082
2083 mutex_unlock(&priv->fw_mutex);
2084
2085 return rc;
2086 }
2087
2088 priv->fw_mutex_owner = current;
2089 }
2090
2091 priv->fw_mutex_depth++;
2092
2093 return 0;
2094 }
2095
2096 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2097 {
2098 struct mwl8k_priv *priv = hw->priv;
2099
2100 if (!--priv->fw_mutex_depth) {
2101 if (!priv->hw_restart_in_progress)
2102 ieee80211_wake_queues(hw);
2103
2104 priv->fw_mutex_owner = NULL;
2105 mutex_unlock(&priv->fw_mutex);
2106 }
2107 }
2108
2109
2110 /*
2111 * Command processing.
2112 */
2113
2114 /* Timeout firmware commands after 10s */
2115 #define MWL8K_CMD_TIMEOUT_MS 10000
2116
2117 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2118 {
2119 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2120 struct mwl8k_priv *priv = hw->priv;
2121 void __iomem *regs = priv->regs;
2122 dma_addr_t dma_addr;
2123 unsigned int dma_size;
2124 int rc;
2125 unsigned long timeout = 0;
2126 u8 buf[32];
2127
2128 cmd->result = (__force __le16) 0xffff;
2129 dma_size = le16_to_cpu(cmd->length);
2130 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2131 PCI_DMA_BIDIRECTIONAL);
2132 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2133 return -ENOMEM;
2134
2135 rc = mwl8k_fw_lock(hw);
2136 if (rc) {
2137 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2138 PCI_DMA_BIDIRECTIONAL);
2139 return rc;
2140 }
2141
2142 priv->hostcmd_wait = &cmd_wait;
2143 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2144 iowrite32(MWL8K_H2A_INT_DOORBELL,
2145 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2146 iowrite32(MWL8K_H2A_INT_DUMMY,
2147 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2148
2149 timeout = wait_for_completion_timeout(&cmd_wait,
2150 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2151
2152 priv->hostcmd_wait = NULL;
2153
2154 mwl8k_fw_unlock(hw);
2155
2156 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2157 PCI_DMA_BIDIRECTIONAL);
2158
2159 if (!timeout) {
2160 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2161 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2162 MWL8K_CMD_TIMEOUT_MS);
2163 rc = -ETIMEDOUT;
2164 } else {
2165 int ms;
2166
2167 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2168
2169 rc = cmd->result ? -EINVAL : 0;
2170 if (rc)
2171 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2172 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2173 le16_to_cpu(cmd->result));
2174 else if (ms > 2000)
2175 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2176 mwl8k_cmd_name(cmd->code,
2177 buf, sizeof(buf)),
2178 ms);
2179 }
2180
2181 return rc;
2182 }
2183
2184 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2185 struct ieee80211_vif *vif,
2186 struct mwl8k_cmd_pkt *cmd)
2187 {
2188 if (vif != NULL)
2189 cmd->macid = MWL8K_VIF(vif)->macid;
2190 return mwl8k_post_cmd(hw, cmd);
2191 }
2192
2193 /*
2194 * Setup code shared between STA and AP firmware images.
2195 */
2196 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2197 {
2198 struct mwl8k_priv *priv = hw->priv;
2199
2200 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2201 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2202
2203 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2204 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2205
2206 priv->band_24.band = IEEE80211_BAND_2GHZ;
2207 priv->band_24.channels = priv->channels_24;
2208 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2209 priv->band_24.bitrates = priv->rates_24;
2210 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2211
2212 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2213 }
2214
2215 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2216 {
2217 struct mwl8k_priv *priv = hw->priv;
2218
2219 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2220 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2221
2222 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2223 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2224
2225 priv->band_50.band = IEEE80211_BAND_5GHZ;
2226 priv->band_50.channels = priv->channels_50;
2227 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2228 priv->band_50.bitrates = priv->rates_50;
2229 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2230
2231 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2232 }
2233
2234 /*
2235 * CMD_GET_HW_SPEC (STA version).
2236 */
2237 struct mwl8k_cmd_get_hw_spec_sta {
2238 struct mwl8k_cmd_pkt header;
2239 __u8 hw_rev;
2240 __u8 host_interface;
2241 __le16 num_mcaddrs;
2242 __u8 perm_addr[ETH_ALEN];
2243 __le16 region_code;
2244 __le32 fw_rev;
2245 __le32 ps_cookie;
2246 __le32 caps;
2247 __u8 mcs_bitmap[16];
2248 __le32 rx_queue_ptr;
2249 __le32 num_tx_queues;
2250 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2251 __le32 caps2;
2252 __le32 num_tx_desc_per_queue;
2253 __le32 total_rxd;
2254 } __packed;
2255
2256 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2257 #define MWL8K_CAP_GREENFIELD 0x08000000
2258 #define MWL8K_CAP_AMPDU 0x04000000
2259 #define MWL8K_CAP_RX_STBC 0x01000000
2260 #define MWL8K_CAP_TX_STBC 0x00800000
2261 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2262 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2263 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2264 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2265 #define MWL8K_CAP_DELAY_BA 0x00003000
2266 #define MWL8K_CAP_MIMO 0x00000200
2267 #define MWL8K_CAP_40MHZ 0x00000100
2268 #define MWL8K_CAP_BAND_MASK 0x00000007
2269 #define MWL8K_CAP_5GHZ 0x00000004
2270 #define MWL8K_CAP_2GHZ4 0x00000001
2271
2272 static void
2273 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2274 struct ieee80211_supported_band *band, u32 cap)
2275 {
2276 int rx_streams;
2277 int tx_streams;
2278
2279 band->ht_cap.ht_supported = 1;
2280
2281 if (cap & MWL8K_CAP_MAX_AMSDU)
2282 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2283 if (cap & MWL8K_CAP_GREENFIELD)
2284 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2285 if (cap & MWL8K_CAP_AMPDU) {
2286 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2287 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2288 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2289 }
2290 if (cap & MWL8K_CAP_RX_STBC)
2291 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2292 if (cap & MWL8K_CAP_TX_STBC)
2293 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2294 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2295 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2296 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2297 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2298 if (cap & MWL8K_CAP_DELAY_BA)
2299 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2300 if (cap & MWL8K_CAP_40MHZ)
2301 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2302
2303 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2304 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2305
2306 band->ht_cap.mcs.rx_mask[0] = 0xff;
2307 if (rx_streams >= 2)
2308 band->ht_cap.mcs.rx_mask[1] = 0xff;
2309 if (rx_streams >= 3)
2310 band->ht_cap.mcs.rx_mask[2] = 0xff;
2311 band->ht_cap.mcs.rx_mask[4] = 0x01;
2312 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2313
2314 if (rx_streams != tx_streams) {
2315 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2316 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2317 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2318 }
2319 }
2320
2321 static void
2322 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2323 {
2324 struct mwl8k_priv *priv = hw->priv;
2325
2326 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2327 mwl8k_setup_2ghz_band(hw);
2328 if (caps & MWL8K_CAP_MIMO)
2329 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2330 }
2331
2332 if (caps & MWL8K_CAP_5GHZ) {
2333 mwl8k_setup_5ghz_band(hw);
2334 if (caps & MWL8K_CAP_MIMO)
2335 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2336 }
2337 }
2338
2339 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2340 {
2341 struct mwl8k_priv *priv = hw->priv;
2342 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2343 int rc;
2344 int i;
2345
2346 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2347 if (cmd == NULL)
2348 return -ENOMEM;
2349
2350 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2351 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2352
2353 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2354 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2355 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2356 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2357 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2358 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2359 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2360 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2361
2362 rc = mwl8k_post_cmd(hw, &cmd->header);
2363
2364 if (!rc) {
2365 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2366 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2367 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2368 priv->hw_rev = cmd->hw_rev;
2369 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2370 priv->ap_macids_supported = 0x00000000;
2371 priv->sta_macids_supported = 0x00000001;
2372 }
2373
2374 kfree(cmd);
2375 return rc;
2376 }
2377
2378 /*
2379 * CMD_GET_HW_SPEC (AP version).
2380 */
2381 struct mwl8k_cmd_get_hw_spec_ap {
2382 struct mwl8k_cmd_pkt header;
2383 __u8 hw_rev;
2384 __u8 host_interface;
2385 __le16 num_wcb;
2386 __le16 num_mcaddrs;
2387 __u8 perm_addr[ETH_ALEN];
2388 __le16 region_code;
2389 __le16 num_antenna;
2390 __le32 fw_rev;
2391 __le32 wcbbase0;
2392 __le32 rxwrptr;
2393 __le32 rxrdptr;
2394 __le32 ps_cookie;
2395 __le32 wcbbase1;
2396 __le32 wcbbase2;
2397 __le32 wcbbase3;
2398 __le32 fw_api_version;
2399 __le32 caps;
2400 __le32 num_of_ampdu_queues;
2401 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2402 } __packed;
2403
2404 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2405 {
2406 struct mwl8k_priv *priv = hw->priv;
2407 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2408 int rc, i;
2409 u32 api_version;
2410
2411 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2412 if (cmd == NULL)
2413 return -ENOMEM;
2414
2415 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2416 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2417
2418 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2419 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2420
2421 rc = mwl8k_post_cmd(hw, &cmd->header);
2422
2423 if (!rc) {
2424 int off;
2425
2426 api_version = le32_to_cpu(cmd->fw_api_version);
2427 if (priv->device_info->fw_api_ap != api_version) {
2428 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2429 " Expected %d got %d.\n", MWL8K_NAME,
2430 priv->device_info->part_name,
2431 priv->device_info->fw_api_ap,
2432 api_version);
2433 rc = -EINVAL;
2434 goto done;
2435 }
2436 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2437 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2438 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2439 priv->hw_rev = cmd->hw_rev;
2440 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2441 priv->ap_macids_supported = 0x000000ff;
2442 priv->sta_macids_supported = 0x00000000;
2443 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2444 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2445 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2446 " but we only support %d.\n",
2447 priv->num_ampdu_queues,
2448 MWL8K_MAX_AMPDU_QUEUES);
2449 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2450 }
2451 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2452 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2453
2454 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2455 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2456
2457 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2458 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2459 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2460 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2461
2462 for (i = 0; i < priv->num_ampdu_queues; i++)
2463 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2464 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2465 }
2466
2467 done:
2468 kfree(cmd);
2469 return rc;
2470 }
2471
2472 /*
2473 * CMD_SET_HW_SPEC.
2474 */
2475 struct mwl8k_cmd_set_hw_spec {
2476 struct mwl8k_cmd_pkt header;
2477 __u8 hw_rev;
2478 __u8 host_interface;
2479 __le16 num_mcaddrs;
2480 __u8 perm_addr[ETH_ALEN];
2481 __le16 region_code;
2482 __le32 fw_rev;
2483 __le32 ps_cookie;
2484 __le32 caps;
2485 __le32 rx_queue_ptr;
2486 __le32 num_tx_queues;
2487 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2488 __le32 flags;
2489 __le32 num_tx_desc_per_queue;
2490 __le32 total_rxd;
2491 } __packed;
2492
2493 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2494 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2495 * the packets that are queued for more than 500ms, will be dropped in the
2496 * hardware. This helps minimizing the issues caused due to head-of-line
2497 * blocking where a slow client can hog the bandwidth and affect traffic to a
2498 * faster client.
2499 */
2500 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2501 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2502 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2503 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2504 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2505
2506 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2507 {
2508 struct mwl8k_priv *priv = hw->priv;
2509 struct mwl8k_cmd_set_hw_spec *cmd;
2510 int rc;
2511 int i;
2512
2513 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2514 if (cmd == NULL)
2515 return -ENOMEM;
2516
2517 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2518 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2519
2520 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2521 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2522 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2523
2524 /*
2525 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2526 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2527 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2528 * priority is interpreted the right way in firmware.
2529 */
2530 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2531 int j = mwl8k_tx_queues(priv) - 1 - i;
2532 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2533 }
2534
2535 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2536 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2537 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2538 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2539 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2540 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2541 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2542
2543 rc = mwl8k_post_cmd(hw, &cmd->header);
2544 kfree(cmd);
2545
2546 return rc;
2547 }
2548
2549 /*
2550 * CMD_MAC_MULTICAST_ADR.
2551 */
2552 struct mwl8k_cmd_mac_multicast_adr {
2553 struct mwl8k_cmd_pkt header;
2554 __le16 action;
2555 __le16 numaddr;
2556 __u8 addr[0][ETH_ALEN];
2557 };
2558
2559 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2560 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2561 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2562 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2563
2564 static struct mwl8k_cmd_pkt *
2565 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2566 struct netdev_hw_addr_list *mc_list)
2567 {
2568 struct mwl8k_priv *priv = hw->priv;
2569 struct mwl8k_cmd_mac_multicast_adr *cmd;
2570 int size;
2571 int mc_count = 0;
2572
2573 if (mc_list)
2574 mc_count = netdev_hw_addr_list_count(mc_list);
2575
2576 if (allmulti || mc_count > priv->num_mcaddrs) {
2577 allmulti = 1;
2578 mc_count = 0;
2579 }
2580
2581 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2582
2583 cmd = kzalloc(size, GFP_ATOMIC);
2584 if (cmd == NULL)
2585 return NULL;
2586
2587 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2588 cmd->header.length = cpu_to_le16(size);
2589 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2590 MWL8K_ENABLE_RX_BROADCAST);
2591
2592 if (allmulti) {
2593 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2594 } else if (mc_count) {
2595 struct netdev_hw_addr *ha;
2596 int i = 0;
2597
2598 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2599 cmd->numaddr = cpu_to_le16(mc_count);
2600 netdev_hw_addr_list_for_each(ha, mc_list) {
2601 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2602 }
2603 }
2604
2605 return &cmd->header;
2606 }
2607
2608 /*
2609 * CMD_GET_STAT.
2610 */
2611 struct mwl8k_cmd_get_stat {
2612 struct mwl8k_cmd_pkt header;
2613 __le32 stats[64];
2614 } __packed;
2615
2616 #define MWL8K_STAT_ACK_FAILURE 9
2617 #define MWL8K_STAT_RTS_FAILURE 12
2618 #define MWL8K_STAT_FCS_ERROR 24
2619 #define MWL8K_STAT_RTS_SUCCESS 11
2620
2621 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2622 struct ieee80211_low_level_stats *stats)
2623 {
2624 struct mwl8k_cmd_get_stat *cmd;
2625 int rc;
2626
2627 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2628 if (cmd == NULL)
2629 return -ENOMEM;
2630
2631 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2632 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2633
2634 rc = mwl8k_post_cmd(hw, &cmd->header);
2635 if (!rc) {
2636 stats->dot11ACKFailureCount =
2637 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2638 stats->dot11RTSFailureCount =
2639 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2640 stats->dot11FCSErrorCount =
2641 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2642 stats->dot11RTSSuccessCount =
2643 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2644 }
2645 kfree(cmd);
2646
2647 return rc;
2648 }
2649
2650 /*
2651 * CMD_RADIO_CONTROL.
2652 */
2653 struct mwl8k_cmd_radio_control {
2654 struct mwl8k_cmd_pkt header;
2655 __le16 action;
2656 __le16 control;
2657 __le16 radio_on;
2658 } __packed;
2659
2660 static int
2661 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2662 {
2663 struct mwl8k_priv *priv = hw->priv;
2664 struct mwl8k_cmd_radio_control *cmd;
2665 int rc;
2666
2667 if (enable == priv->radio_on && !force)
2668 return 0;
2669
2670 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2671 if (cmd == NULL)
2672 return -ENOMEM;
2673
2674 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2675 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2676 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2677 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2678 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2679
2680 rc = mwl8k_post_cmd(hw, &cmd->header);
2681 kfree(cmd);
2682
2683 if (!rc)
2684 priv->radio_on = enable;
2685
2686 return rc;
2687 }
2688
2689 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2690 {
2691 return mwl8k_cmd_radio_control(hw, 0, 0);
2692 }
2693
2694 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2695 {
2696 return mwl8k_cmd_radio_control(hw, 1, 0);
2697 }
2698
2699 static int
2700 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2701 {
2702 struct mwl8k_priv *priv = hw->priv;
2703
2704 priv->radio_short_preamble = short_preamble;
2705
2706 return mwl8k_cmd_radio_control(hw, 1, 1);
2707 }
2708
2709 /*
2710 * CMD_RF_TX_POWER.
2711 */
2712 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2713
2714 struct mwl8k_cmd_rf_tx_power {
2715 struct mwl8k_cmd_pkt header;
2716 __le16 action;
2717 __le16 support_level;
2718 __le16 current_level;
2719 __le16 reserved;
2720 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2721 } __packed;
2722
2723 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2724 {
2725 struct mwl8k_cmd_rf_tx_power *cmd;
2726 int rc;
2727
2728 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2729 if (cmd == NULL)
2730 return -ENOMEM;
2731
2732 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2733 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2734 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2735 cmd->support_level = cpu_to_le16(dBm);
2736
2737 rc = mwl8k_post_cmd(hw, &cmd->header);
2738 kfree(cmd);
2739
2740 return rc;
2741 }
2742
2743 /*
2744 * CMD_TX_POWER.
2745 */
2746 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2747
2748 struct mwl8k_cmd_tx_power {
2749 struct mwl8k_cmd_pkt header;
2750 __le16 action;
2751 __le16 band;
2752 __le16 channel;
2753 __le16 bw;
2754 __le16 sub_ch;
2755 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2756 } __packed;
2757
2758 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2759 struct ieee80211_conf *conf,
2760 unsigned short pwr)
2761 {
2762 struct ieee80211_channel *channel = conf->channel;
2763 struct mwl8k_cmd_tx_power *cmd;
2764 int rc;
2765 int i;
2766
2767 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2768 if (cmd == NULL)
2769 return -ENOMEM;
2770
2771 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2772 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2773 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2774
2775 if (channel->band == IEEE80211_BAND_2GHZ)
2776 cmd->band = cpu_to_le16(0x1);
2777 else if (channel->band == IEEE80211_BAND_5GHZ)
2778 cmd->band = cpu_to_le16(0x4);
2779
2780 cmd->channel = cpu_to_le16(channel->hw_value);
2781
2782 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2783 conf->channel_type == NL80211_CHAN_HT20) {
2784 cmd->bw = cpu_to_le16(0x2);
2785 } else {
2786 cmd->bw = cpu_to_le16(0x4);
2787 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2788 cmd->sub_ch = cpu_to_le16(0x3);
2789 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2790 cmd->sub_ch = cpu_to_le16(0x1);
2791 }
2792
2793 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2794 cmd->power_level_list[i] = cpu_to_le16(pwr);
2795
2796 rc = mwl8k_post_cmd(hw, &cmd->header);
2797 kfree(cmd);
2798
2799 return rc;
2800 }
2801
2802 /*
2803 * CMD_RF_ANTENNA.
2804 */
2805 struct mwl8k_cmd_rf_antenna {
2806 struct mwl8k_cmd_pkt header;
2807 __le16 antenna;
2808 __le16 mode;
2809 } __packed;
2810
2811 #define MWL8K_RF_ANTENNA_RX 1
2812 #define MWL8K_RF_ANTENNA_TX 2
2813
2814 static int
2815 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2816 {
2817 struct mwl8k_cmd_rf_antenna *cmd;
2818 int rc;
2819
2820 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2821 if (cmd == NULL)
2822 return -ENOMEM;
2823
2824 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2825 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2826 cmd->antenna = cpu_to_le16(antenna);
2827 cmd->mode = cpu_to_le16(mask);
2828
2829 rc = mwl8k_post_cmd(hw, &cmd->header);
2830 kfree(cmd);
2831
2832 return rc;
2833 }
2834
2835 /*
2836 * CMD_SET_BEACON.
2837 */
2838 struct mwl8k_cmd_set_beacon {
2839 struct mwl8k_cmd_pkt header;
2840 __le16 beacon_len;
2841 __u8 beacon[0];
2842 };
2843
2844 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2845 struct ieee80211_vif *vif, u8 *beacon, int len)
2846 {
2847 struct mwl8k_cmd_set_beacon *cmd;
2848 int rc;
2849
2850 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2851 if (cmd == NULL)
2852 return -ENOMEM;
2853
2854 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2855 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2856 cmd->beacon_len = cpu_to_le16(len);
2857 memcpy(cmd->beacon, beacon, len);
2858
2859 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2860 kfree(cmd);
2861
2862 return rc;
2863 }
2864
2865 /*
2866 * CMD_SET_PRE_SCAN.
2867 */
2868 struct mwl8k_cmd_set_pre_scan {
2869 struct mwl8k_cmd_pkt header;
2870 } __packed;
2871
2872 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2873 {
2874 struct mwl8k_cmd_set_pre_scan *cmd;
2875 int rc;
2876
2877 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2878 if (cmd == NULL)
2879 return -ENOMEM;
2880
2881 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2882 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2883
2884 rc = mwl8k_post_cmd(hw, &cmd->header);
2885 kfree(cmd);
2886
2887 return rc;
2888 }
2889
2890 /*
2891 * CMD_SET_POST_SCAN.
2892 */
2893 struct mwl8k_cmd_set_post_scan {
2894 struct mwl8k_cmd_pkt header;
2895 __le32 isibss;
2896 __u8 bssid[ETH_ALEN];
2897 } __packed;
2898
2899 static int
2900 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2901 {
2902 struct mwl8k_cmd_set_post_scan *cmd;
2903 int rc;
2904
2905 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2906 if (cmd == NULL)
2907 return -ENOMEM;
2908
2909 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2910 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2911 cmd->isibss = 0;
2912 memcpy(cmd->bssid, mac, ETH_ALEN);
2913
2914 rc = mwl8k_post_cmd(hw, &cmd->header);
2915 kfree(cmd);
2916
2917 return rc;
2918 }
2919
2920 /*
2921 * CMD_SET_RF_CHANNEL.
2922 */
2923 struct mwl8k_cmd_set_rf_channel {
2924 struct mwl8k_cmd_pkt header;
2925 __le16 action;
2926 __u8 current_channel;
2927 __le32 channel_flags;
2928 } __packed;
2929
2930 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2931 struct ieee80211_conf *conf)
2932 {
2933 struct ieee80211_channel *channel = conf->channel;
2934 struct mwl8k_cmd_set_rf_channel *cmd;
2935 int rc;
2936
2937 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2938 if (cmd == NULL)
2939 return -ENOMEM;
2940
2941 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2942 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2943 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2944 cmd->current_channel = channel->hw_value;
2945
2946 if (channel->band == IEEE80211_BAND_2GHZ)
2947 cmd->channel_flags |= cpu_to_le32(0x00000001);
2948 else if (channel->band == IEEE80211_BAND_5GHZ)
2949 cmd->channel_flags |= cpu_to_le32(0x00000004);
2950
2951 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2952 conf->channel_type == NL80211_CHAN_HT20)
2953 cmd->channel_flags |= cpu_to_le32(0x00000080);
2954 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2955 cmd->channel_flags |= cpu_to_le32(0x000001900);
2956 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2957 cmd->channel_flags |= cpu_to_le32(0x000000900);
2958
2959 rc = mwl8k_post_cmd(hw, &cmd->header);
2960 kfree(cmd);
2961
2962 return rc;
2963 }
2964
2965 /*
2966 * CMD_SET_AID.
2967 */
2968 #define MWL8K_FRAME_PROT_DISABLED 0x00
2969 #define MWL8K_FRAME_PROT_11G 0x07
2970 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2971 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2972
2973 struct mwl8k_cmd_update_set_aid {
2974 struct mwl8k_cmd_pkt header;
2975 __le16 aid;
2976
2977 /* AP's MAC address (BSSID) */
2978 __u8 bssid[ETH_ALEN];
2979 __le16 protection_mode;
2980 __u8 supp_rates[14];
2981 } __packed;
2982
2983 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2984 {
2985 int i;
2986 int j;
2987
2988 /*
2989 * Clear nonstandard rates 4 and 13.
2990 */
2991 mask &= 0x1fef;
2992
2993 for (i = 0, j = 0; i < 14; i++) {
2994 if (mask & (1 << i))
2995 rates[j++] = mwl8k_rates_24[i].hw_value;
2996 }
2997 }
2998
2999 static int
3000 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3001 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3002 {
3003 struct mwl8k_cmd_update_set_aid *cmd;
3004 u16 prot_mode;
3005 int rc;
3006
3007 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3008 if (cmd == NULL)
3009 return -ENOMEM;
3010
3011 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3012 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3013 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3014 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3015
3016 if (vif->bss_conf.use_cts_prot) {
3017 prot_mode = MWL8K_FRAME_PROT_11G;
3018 } else {
3019 switch (vif->bss_conf.ht_operation_mode &
3020 IEEE80211_HT_OP_MODE_PROTECTION) {
3021 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3022 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3023 break;
3024 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3025 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3026 break;
3027 default:
3028 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3029 break;
3030 }
3031 }
3032 cmd->protection_mode = cpu_to_le16(prot_mode);
3033
3034 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3035
3036 rc = mwl8k_post_cmd(hw, &cmd->header);
3037 kfree(cmd);
3038
3039 return rc;
3040 }
3041
3042 /*
3043 * CMD_SET_RATE.
3044 */
3045 struct mwl8k_cmd_set_rate {
3046 struct mwl8k_cmd_pkt header;
3047 __u8 legacy_rates[14];
3048
3049 /* Bitmap for supported MCS codes. */
3050 __u8 mcs_set[16];
3051 __u8 reserved[16];
3052 } __packed;
3053
3054 static int
3055 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3056 u32 legacy_rate_mask, u8 *mcs_rates)
3057 {
3058 struct mwl8k_cmd_set_rate *cmd;
3059 int rc;
3060
3061 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3062 if (cmd == NULL)
3063 return -ENOMEM;
3064
3065 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3066 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3067 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3068 memcpy(cmd->mcs_set, mcs_rates, 16);
3069
3070 rc = mwl8k_post_cmd(hw, &cmd->header);
3071 kfree(cmd);
3072
3073 return rc;
3074 }
3075
3076 /*
3077 * CMD_FINALIZE_JOIN.
3078 */
3079 #define MWL8K_FJ_BEACON_MAXLEN 128
3080
3081 struct mwl8k_cmd_finalize_join {
3082 struct mwl8k_cmd_pkt header;
3083 __le32 sleep_interval; /* Number of beacon periods to sleep */
3084 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3085 } __packed;
3086
3087 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3088 int framelen, int dtim)
3089 {
3090 struct mwl8k_cmd_finalize_join *cmd;
3091 struct ieee80211_mgmt *payload = frame;
3092 int payload_len;
3093 int rc;
3094
3095 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3096 if (cmd == NULL)
3097 return -ENOMEM;
3098
3099 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3100 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3101 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3102
3103 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3104 if (payload_len < 0)
3105 payload_len = 0;
3106 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3107 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3108
3109 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3110
3111 rc = mwl8k_post_cmd(hw, &cmd->header);
3112 kfree(cmd);
3113
3114 return rc;
3115 }
3116
3117 /*
3118 * CMD_SET_RTS_THRESHOLD.
3119 */
3120 struct mwl8k_cmd_set_rts_threshold {
3121 struct mwl8k_cmd_pkt header;
3122 __le16 action;
3123 __le16 threshold;
3124 } __packed;
3125
3126 static int
3127 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3128 {
3129 struct mwl8k_cmd_set_rts_threshold *cmd;
3130 int rc;
3131
3132 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3133 if (cmd == NULL)
3134 return -ENOMEM;
3135
3136 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3137 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3138 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3139 cmd->threshold = cpu_to_le16(rts_thresh);
3140
3141 rc = mwl8k_post_cmd(hw, &cmd->header);
3142 kfree(cmd);
3143
3144 return rc;
3145 }
3146
3147 /*
3148 * CMD_SET_SLOT.
3149 */
3150 struct mwl8k_cmd_set_slot {
3151 struct mwl8k_cmd_pkt header;
3152 __le16 action;
3153 __u8 short_slot;
3154 } __packed;
3155
3156 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3157 {
3158 struct mwl8k_cmd_set_slot *cmd;
3159 int rc;
3160
3161 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3162 if (cmd == NULL)
3163 return -ENOMEM;
3164
3165 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3166 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3167 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3168 cmd->short_slot = short_slot_time;
3169
3170 rc = mwl8k_post_cmd(hw, &cmd->header);
3171 kfree(cmd);
3172
3173 return rc;
3174 }
3175
3176 /*
3177 * CMD_SET_EDCA_PARAMS.
3178 */
3179 struct mwl8k_cmd_set_edca_params {
3180 struct mwl8k_cmd_pkt header;
3181
3182 /* See MWL8K_SET_EDCA_XXX below */
3183 __le16 action;
3184
3185 /* TX opportunity in units of 32 us */
3186 __le16 txop;
3187
3188 union {
3189 struct {
3190 /* Log exponent of max contention period: 0...15 */
3191 __le32 log_cw_max;
3192
3193 /* Log exponent of min contention period: 0...15 */
3194 __le32 log_cw_min;
3195
3196 /* Adaptive interframe spacing in units of 32us */
3197 __u8 aifs;
3198
3199 /* TX queue to configure */
3200 __u8 txq;
3201 } ap;
3202 struct {
3203 /* Log exponent of max contention period: 0...15 */
3204 __u8 log_cw_max;
3205
3206 /* Log exponent of min contention period: 0...15 */
3207 __u8 log_cw_min;
3208
3209 /* Adaptive interframe spacing in units of 32us */
3210 __u8 aifs;
3211
3212 /* TX queue to configure */
3213 __u8 txq;
3214 } sta;
3215 };
3216 } __packed;
3217
3218 #define MWL8K_SET_EDCA_CW 0x01
3219 #define MWL8K_SET_EDCA_TXOP 0x02
3220 #define MWL8K_SET_EDCA_AIFS 0x04
3221
3222 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3223 MWL8K_SET_EDCA_TXOP | \
3224 MWL8K_SET_EDCA_AIFS)
3225
3226 static int
3227 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3228 __u16 cw_min, __u16 cw_max,
3229 __u8 aifs, __u16 txop)
3230 {
3231 struct mwl8k_priv *priv = hw->priv;
3232 struct mwl8k_cmd_set_edca_params *cmd;
3233 int rc;
3234
3235 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3236 if (cmd == NULL)
3237 return -ENOMEM;
3238
3239 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3240 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3241 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3242 cmd->txop = cpu_to_le16(txop);
3243 if (priv->ap_fw) {
3244 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3245 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3246 cmd->ap.aifs = aifs;
3247 cmd->ap.txq = qnum;
3248 } else {
3249 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3250 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3251 cmd->sta.aifs = aifs;
3252 cmd->sta.txq = qnum;
3253 }
3254
3255 rc = mwl8k_post_cmd(hw, &cmd->header);
3256 kfree(cmd);
3257
3258 return rc;
3259 }
3260
3261 /*
3262 * CMD_SET_WMM_MODE.
3263 */
3264 struct mwl8k_cmd_set_wmm_mode {
3265 struct mwl8k_cmd_pkt header;
3266 __le16 action;
3267 } __packed;
3268
3269 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3270 {
3271 struct mwl8k_priv *priv = hw->priv;
3272 struct mwl8k_cmd_set_wmm_mode *cmd;
3273 int rc;
3274
3275 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3276 if (cmd == NULL)
3277 return -ENOMEM;
3278
3279 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3280 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3281 cmd->action = cpu_to_le16(!!enable);
3282
3283 rc = mwl8k_post_cmd(hw, &cmd->header);
3284 kfree(cmd);
3285
3286 if (!rc)
3287 priv->wmm_enabled = enable;
3288
3289 return rc;
3290 }
3291
3292 /*
3293 * CMD_MIMO_CONFIG.
3294 */
3295 struct mwl8k_cmd_mimo_config {
3296 struct mwl8k_cmd_pkt header;
3297 __le32 action;
3298 __u8 rx_antenna_map;
3299 __u8 tx_antenna_map;
3300 } __packed;
3301
3302 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3303 {
3304 struct mwl8k_cmd_mimo_config *cmd;
3305 int rc;
3306
3307 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3308 if (cmd == NULL)
3309 return -ENOMEM;
3310
3311 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3312 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3313 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3314 cmd->rx_antenna_map = rx;
3315 cmd->tx_antenna_map = tx;
3316
3317 rc = mwl8k_post_cmd(hw, &cmd->header);
3318 kfree(cmd);
3319
3320 return rc;
3321 }
3322
3323 /*
3324 * CMD_USE_FIXED_RATE (STA version).
3325 */
3326 struct mwl8k_cmd_use_fixed_rate_sta {
3327 struct mwl8k_cmd_pkt header;
3328 __le32 action;
3329 __le32 allow_rate_drop;
3330 __le32 num_rates;
3331 struct {
3332 __le32 is_ht_rate;
3333 __le32 enable_retry;
3334 __le32 rate;
3335 __le32 retry_count;
3336 } rate_entry[8];
3337 __le32 rate_type;
3338 __le32 reserved1;
3339 __le32 reserved2;
3340 } __packed;
3341
3342 #define MWL8K_USE_AUTO_RATE 0x0002
3343 #define MWL8K_UCAST_RATE 0
3344
3345 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3346 {
3347 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3348 int rc;
3349
3350 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3351 if (cmd == NULL)
3352 return -ENOMEM;
3353
3354 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3355 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3356 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3357 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3358
3359 rc = mwl8k_post_cmd(hw, &cmd->header);
3360 kfree(cmd);
3361
3362 return rc;
3363 }
3364
3365 /*
3366 * CMD_USE_FIXED_RATE (AP version).
3367 */
3368 struct mwl8k_cmd_use_fixed_rate_ap {
3369 struct mwl8k_cmd_pkt header;
3370 __le32 action;
3371 __le32 allow_rate_drop;
3372 __le32 num_rates;
3373 struct mwl8k_rate_entry_ap {
3374 __le32 is_ht_rate;
3375 __le32 enable_retry;
3376 __le32 rate;
3377 __le32 retry_count;
3378 } rate_entry[4];
3379 u8 multicast_rate;
3380 u8 multicast_rate_type;
3381 u8 management_rate;
3382 } __packed;
3383
3384 static int
3385 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3386 {
3387 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3388 int rc;
3389
3390 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3391 if (cmd == NULL)
3392 return -ENOMEM;
3393
3394 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3395 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3396 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3397 cmd->multicast_rate = mcast;
3398 cmd->management_rate = mgmt;
3399
3400 rc = mwl8k_post_cmd(hw, &cmd->header);
3401 kfree(cmd);
3402
3403 return rc;
3404 }
3405
3406 /*
3407 * CMD_ENABLE_SNIFFER.
3408 */
3409 struct mwl8k_cmd_enable_sniffer {
3410 struct mwl8k_cmd_pkt header;
3411 __le32 action;
3412 } __packed;
3413
3414 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3415 {
3416 struct mwl8k_cmd_enable_sniffer *cmd;
3417 int rc;
3418
3419 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3420 if (cmd == NULL)
3421 return -ENOMEM;
3422
3423 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3424 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3425 cmd->action = cpu_to_le32(!!enable);
3426
3427 rc = mwl8k_post_cmd(hw, &cmd->header);
3428 kfree(cmd);
3429
3430 return rc;
3431 }
3432
3433 struct mwl8k_cmd_update_mac_addr {
3434 struct mwl8k_cmd_pkt header;
3435 union {
3436 struct {
3437 __le16 mac_type;
3438 __u8 mac_addr[ETH_ALEN];
3439 } mbss;
3440 __u8 mac_addr[ETH_ALEN];
3441 };
3442 } __packed;
3443
3444 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3445 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3446 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3447 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3448
3449 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3450 struct ieee80211_vif *vif, u8 *mac, bool set)
3451 {
3452 struct mwl8k_priv *priv = hw->priv;
3453 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3454 struct mwl8k_cmd_update_mac_addr *cmd;
3455 int mac_type;
3456 int rc;
3457
3458 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3459 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3460 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3461 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3462 else
3463 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3464 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3465 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3466 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3467 else
3468 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3469 }
3470
3471 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3472 if (cmd == NULL)
3473 return -ENOMEM;
3474
3475 if (set)
3476 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3477 else
3478 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3479
3480 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3481 if (priv->ap_fw) {
3482 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3483 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3484 } else {
3485 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3486 }
3487
3488 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3489 kfree(cmd);
3490
3491 return rc;
3492 }
3493
3494 /*
3495 * MWL8K_CMD_SET_MAC_ADDR.
3496 */
3497 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3498 struct ieee80211_vif *vif, u8 *mac)
3499 {
3500 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3501 }
3502
3503 /*
3504 * MWL8K_CMD_DEL_MAC_ADDR.
3505 */
3506 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3507 struct ieee80211_vif *vif, u8 *mac)
3508 {
3509 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3510 }
3511
3512 /*
3513 * CMD_SET_RATEADAPT_MODE.
3514 */
3515 struct mwl8k_cmd_set_rate_adapt_mode {
3516 struct mwl8k_cmd_pkt header;
3517 __le16 action;
3518 __le16 mode;
3519 } __packed;
3520
3521 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3522 {
3523 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3524 int rc;
3525
3526 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3527 if (cmd == NULL)
3528 return -ENOMEM;
3529
3530 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3531 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3532 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3533 cmd->mode = cpu_to_le16(mode);
3534
3535 rc = mwl8k_post_cmd(hw, &cmd->header);
3536 kfree(cmd);
3537
3538 return rc;
3539 }
3540
3541 /*
3542 * CMD_GET_WATCHDOG_BITMAP.
3543 */
3544 struct mwl8k_cmd_get_watchdog_bitmap {
3545 struct mwl8k_cmd_pkt header;
3546 u8 bitmap;
3547 } __packed;
3548
3549 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3550 {
3551 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3552 int rc;
3553
3554 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3555 if (cmd == NULL)
3556 return -ENOMEM;
3557
3558 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3559 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3560
3561 rc = mwl8k_post_cmd(hw, &cmd->header);
3562 if (!rc)
3563 *bitmap = cmd->bitmap;
3564
3565 kfree(cmd);
3566
3567 return rc;
3568 }
3569
3570 #define INVALID_BA 0xAA
3571 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3572 {
3573 int rc;
3574 u8 bitmap = 0, stream_index;
3575 struct mwl8k_ampdu_stream *streams;
3576 struct mwl8k_priv *priv =
3577 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3578
3579 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3580 if (rc)
3581 return;
3582
3583 if (bitmap == INVALID_BA)
3584 return;
3585
3586 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3587 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3588
3589 BUG_ON(stream_index >= priv->num_ampdu_queues);
3590
3591 streams = &priv->ampdu[stream_index];
3592
3593 if (streams->state == AMPDU_STREAM_ACTIVE)
3594 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3595
3596 return;
3597 }
3598
3599
3600 /*
3601 * CMD_BSS_START.
3602 */
3603 struct mwl8k_cmd_bss_start {
3604 struct mwl8k_cmd_pkt header;
3605 __le32 enable;
3606 } __packed;
3607
3608 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3609 struct ieee80211_vif *vif, int enable)
3610 {
3611 struct mwl8k_cmd_bss_start *cmd;
3612 int rc;
3613
3614 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3615 if (cmd == NULL)
3616 return -ENOMEM;
3617
3618 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3619 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3620 cmd->enable = cpu_to_le32(enable);
3621
3622 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3623 kfree(cmd);
3624
3625 return rc;
3626 }
3627
3628 /*
3629 * CMD_BASTREAM.
3630 */
3631
3632 /*
3633 * UPSTREAM is tx direction
3634 */
3635 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3636 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3637
3638 enum ba_stream_action_type {
3639 MWL8K_BA_CREATE,
3640 MWL8K_BA_UPDATE,
3641 MWL8K_BA_DESTROY,
3642 MWL8K_BA_FLUSH,
3643 MWL8K_BA_CHECK,
3644 };
3645
3646
3647 struct mwl8k_create_ba_stream {
3648 __le32 flags;
3649 __le32 idle_thrs;
3650 __le32 bar_thrs;
3651 __le32 window_size;
3652 u8 peer_mac_addr[6];
3653 u8 dialog_token;
3654 u8 tid;
3655 u8 queue_id;
3656 u8 param_info;
3657 __le32 ba_context;
3658 u8 reset_seq_no_flag;
3659 __le16 curr_seq_no;
3660 u8 sta_src_mac_addr[6];
3661 } __packed;
3662
3663 struct mwl8k_destroy_ba_stream {
3664 __le32 flags;
3665 __le32 ba_context;
3666 } __packed;
3667
3668 struct mwl8k_cmd_bastream {
3669 struct mwl8k_cmd_pkt header;
3670 __le32 action;
3671 union {
3672 struct mwl8k_create_ba_stream create_params;
3673 struct mwl8k_destroy_ba_stream destroy_params;
3674 };
3675 } __packed;
3676
3677 static int
3678 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3679 {
3680 struct mwl8k_cmd_bastream *cmd;
3681 int rc;
3682
3683 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3684 if (cmd == NULL)
3685 return -ENOMEM;
3686
3687 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3688 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3689
3690 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3691
3692 cmd->create_params.queue_id = stream->idx;
3693 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3694 ETH_ALEN);
3695 cmd->create_params.tid = stream->tid;
3696
3697 cmd->create_params.flags =
3698 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3699 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3700
3701 rc = mwl8k_post_cmd(hw, &cmd->header);
3702
3703 kfree(cmd);
3704
3705 return rc;
3706 }
3707
3708 static int
3709 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3710 u8 buf_size)
3711 {
3712 struct mwl8k_cmd_bastream *cmd;
3713 int rc;
3714
3715 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3716 if (cmd == NULL)
3717 return -ENOMEM;
3718
3719
3720 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3721 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3722
3723 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3724
3725 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3726 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3727 cmd->create_params.queue_id = stream->idx;
3728
3729 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3730 cmd->create_params.tid = stream->tid;
3731 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3732 cmd->create_params.reset_seq_no_flag = 1;
3733
3734 cmd->create_params.param_info =
3735 (stream->sta->ht_cap.ampdu_factor &
3736 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3737 ((stream->sta->ht_cap.ampdu_density << 2) &
3738 IEEE80211_HT_AMPDU_PARM_DENSITY);
3739
3740 cmd->create_params.flags =
3741 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3742 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3743
3744 rc = mwl8k_post_cmd(hw, &cmd->header);
3745
3746 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3747 stream->sta->addr, stream->tid);
3748 kfree(cmd);
3749
3750 return rc;
3751 }
3752
3753 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3754 struct mwl8k_ampdu_stream *stream)
3755 {
3756 struct mwl8k_cmd_bastream *cmd;
3757
3758 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3759 if (cmd == NULL)
3760 return;
3761
3762 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3763 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3764 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3765
3766 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3767 mwl8k_post_cmd(hw, &cmd->header);
3768
3769 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3770
3771 kfree(cmd);
3772 }
3773
3774 /*
3775 * CMD_SET_NEW_STN.
3776 */
3777 struct mwl8k_cmd_set_new_stn {
3778 struct mwl8k_cmd_pkt header;
3779 __le16 aid;
3780 __u8 mac_addr[6];
3781 __le16 stn_id;
3782 __le16 action;
3783 __le16 rsvd;
3784 __le32 legacy_rates;
3785 __u8 ht_rates[4];
3786 __le16 cap_info;
3787 __le16 ht_capabilities_info;
3788 __u8 mac_ht_param_info;
3789 __u8 rev;
3790 __u8 control_channel;
3791 __u8 add_channel;
3792 __le16 op_mode;
3793 __le16 stbc;
3794 __u8 add_qos_info;
3795 __u8 is_qos_sta;
3796 __le32 fw_sta_ptr;
3797 } __packed;
3798
3799 #define MWL8K_STA_ACTION_ADD 0
3800 #define MWL8K_STA_ACTION_REMOVE 2
3801
3802 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3803 struct ieee80211_vif *vif,
3804 struct ieee80211_sta *sta)
3805 {
3806 struct mwl8k_cmd_set_new_stn *cmd;
3807 u32 rates;
3808 int rc;
3809
3810 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3811 if (cmd == NULL)
3812 return -ENOMEM;
3813
3814 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3815 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3816 cmd->aid = cpu_to_le16(sta->aid);
3817 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3818 cmd->stn_id = cpu_to_le16(sta->aid);
3819 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3820 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3821 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3822 else
3823 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3824 cmd->legacy_rates = cpu_to_le32(rates);
3825 if (sta->ht_cap.ht_supported) {
3826 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3827 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3828 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3829 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3830 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3831 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3832 ((sta->ht_cap.ampdu_density & 7) << 2);
3833 cmd->is_qos_sta = 1;
3834 }
3835
3836 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3837 kfree(cmd);
3838
3839 return rc;
3840 }
3841
3842 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3843 struct ieee80211_vif *vif)
3844 {
3845 struct mwl8k_cmd_set_new_stn *cmd;
3846 int rc;
3847
3848 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3849 if (cmd == NULL)
3850 return -ENOMEM;
3851
3852 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3853 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3854 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3855
3856 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3857 kfree(cmd);
3858
3859 return rc;
3860 }
3861
3862 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3863 struct ieee80211_vif *vif, u8 *addr)
3864 {
3865 struct mwl8k_cmd_set_new_stn *cmd;
3866 int rc;
3867
3868 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3869 if (cmd == NULL)
3870 return -ENOMEM;
3871
3872 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3873 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3874 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3875 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3876
3877 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3878 kfree(cmd);
3879
3880 return rc;
3881 }
3882
3883 /*
3884 * CMD_UPDATE_ENCRYPTION.
3885 */
3886
3887 #define MAX_ENCR_KEY_LENGTH 16
3888 #define MIC_KEY_LENGTH 8
3889
3890 struct mwl8k_cmd_update_encryption {
3891 struct mwl8k_cmd_pkt header;
3892
3893 __le32 action;
3894 __le32 reserved;
3895 __u8 mac_addr[6];
3896 __u8 encr_type;
3897
3898 } __packed;
3899
3900 struct mwl8k_cmd_set_key {
3901 struct mwl8k_cmd_pkt header;
3902
3903 __le32 action;
3904 __le32 reserved;
3905 __le16 length;
3906 __le16 key_type_id;
3907 __le32 key_info;
3908 __le32 key_id;
3909 __le16 key_len;
3910 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3911 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3912 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3913 __le16 tkip_rsc_low;
3914 __le32 tkip_rsc_high;
3915 __le16 tkip_tsc_low;
3916 __le32 tkip_tsc_high;
3917 __u8 mac_addr[6];
3918 } __packed;
3919
3920 enum {
3921 MWL8K_ENCR_ENABLE,
3922 MWL8K_ENCR_SET_KEY,
3923 MWL8K_ENCR_REMOVE_KEY,
3924 MWL8K_ENCR_SET_GROUP_KEY,
3925 };
3926
3927 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3928 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3929 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3930 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3931 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3932
3933 enum {
3934 MWL8K_ALG_WEP,
3935 MWL8K_ALG_TKIP,
3936 MWL8K_ALG_CCMP,
3937 };
3938
3939 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3940 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3941 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3942 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3943 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3944
3945 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3946 struct ieee80211_vif *vif,
3947 u8 *addr,
3948 u8 encr_type)
3949 {
3950 struct mwl8k_cmd_update_encryption *cmd;
3951 int rc;
3952
3953 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3954 if (cmd == NULL)
3955 return -ENOMEM;
3956
3957 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3958 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3959 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3960 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3961 cmd->encr_type = encr_type;
3962
3963 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3964 kfree(cmd);
3965
3966 return rc;
3967 }
3968
3969 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3970 u8 *addr,
3971 struct ieee80211_key_conf *key)
3972 {
3973 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3974 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3975 cmd->length = cpu_to_le16(sizeof(*cmd) -
3976 offsetof(struct mwl8k_cmd_set_key, length));
3977 cmd->key_id = cpu_to_le32(key->keyidx);
3978 cmd->key_len = cpu_to_le16(key->keylen);
3979 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3980
3981 switch (key->cipher) {
3982 case WLAN_CIPHER_SUITE_WEP40:
3983 case WLAN_CIPHER_SUITE_WEP104:
3984 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3985 if (key->keyidx == 0)
3986 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3987
3988 break;
3989 case WLAN_CIPHER_SUITE_TKIP:
3990 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3991 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3992 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3993 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3994 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3995 | MWL8K_KEY_FLAG_TSC_VALID);
3996 break;
3997 case WLAN_CIPHER_SUITE_CCMP:
3998 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3999 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4000 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4001 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4002 break;
4003 default:
4004 return -ENOTSUPP;
4005 }
4006
4007 return 0;
4008 }
4009
4010 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4011 struct ieee80211_vif *vif,
4012 u8 *addr,
4013 struct ieee80211_key_conf *key)
4014 {
4015 struct mwl8k_cmd_set_key *cmd;
4016 int rc;
4017 int keymlen;
4018 u32 action;
4019 u8 idx;
4020 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4021
4022 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4023 if (cmd == NULL)
4024 return -ENOMEM;
4025
4026 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4027 if (rc < 0)
4028 goto done;
4029
4030 idx = key->keyidx;
4031
4032 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4033 action = MWL8K_ENCR_SET_KEY;
4034 else
4035 action = MWL8K_ENCR_SET_GROUP_KEY;
4036
4037 switch (key->cipher) {
4038 case WLAN_CIPHER_SUITE_WEP40:
4039 case WLAN_CIPHER_SUITE_WEP104:
4040 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4041 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4042 sizeof(*key) + key->keylen);
4043 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4044 }
4045
4046 keymlen = key->keylen;
4047 action = MWL8K_ENCR_SET_KEY;
4048 break;
4049 case WLAN_CIPHER_SUITE_TKIP:
4050 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4051 break;
4052 case WLAN_CIPHER_SUITE_CCMP:
4053 keymlen = key->keylen;
4054 break;
4055 default:
4056 rc = -ENOTSUPP;
4057 goto done;
4058 }
4059
4060 memcpy(cmd->key_material, key->key, keymlen);
4061 cmd->action = cpu_to_le32(action);
4062
4063 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4064 done:
4065 kfree(cmd);
4066
4067 return rc;
4068 }
4069
4070 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4071 struct ieee80211_vif *vif,
4072 u8 *addr,
4073 struct ieee80211_key_conf *key)
4074 {
4075 struct mwl8k_cmd_set_key *cmd;
4076 int rc;
4077 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4078
4079 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4080 if (cmd == NULL)
4081 return -ENOMEM;
4082
4083 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4084 if (rc < 0)
4085 goto done;
4086
4087 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4088 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4089 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4090
4091 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4092
4093 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4094 done:
4095 kfree(cmd);
4096
4097 return rc;
4098 }
4099
4100 static int mwl8k_set_key(struct ieee80211_hw *hw,
4101 enum set_key_cmd cmd_param,
4102 struct ieee80211_vif *vif,
4103 struct ieee80211_sta *sta,
4104 struct ieee80211_key_conf *key)
4105 {
4106 int rc = 0;
4107 u8 encr_type;
4108 u8 *addr;
4109 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4110
4111 if (vif->type == NL80211_IFTYPE_STATION)
4112 return -EOPNOTSUPP;
4113
4114 if (sta == NULL)
4115 addr = vif->addr;
4116 else
4117 addr = sta->addr;
4118
4119 if (cmd_param == SET_KEY) {
4120 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4121 if (rc)
4122 goto out;
4123
4124 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4125 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4126 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4127 else
4128 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4129
4130 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4131 encr_type);
4132 if (rc)
4133 goto out;
4134
4135 mwl8k_vif->is_hw_crypto_enabled = true;
4136
4137 } else {
4138 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4139
4140 if (rc)
4141 goto out;
4142 }
4143 out:
4144 return rc;
4145 }
4146
4147 /*
4148 * CMD_UPDATE_STADB.
4149 */
4150 struct ewc_ht_info {
4151 __le16 control1;
4152 __le16 control2;
4153 __le16 control3;
4154 } __packed;
4155
4156 struct peer_capability_info {
4157 /* Peer type - AP vs. STA. */
4158 __u8 peer_type;
4159
4160 /* Basic 802.11 capabilities from assoc resp. */
4161 __le16 basic_caps;
4162
4163 /* Set if peer supports 802.11n high throughput (HT). */
4164 __u8 ht_support;
4165
4166 /* Valid if HT is supported. */
4167 __le16 ht_caps;
4168 __u8 extended_ht_caps;
4169 struct ewc_ht_info ewc_info;
4170
4171 /* Legacy rate table. Intersection of our rates and peer rates. */
4172 __u8 legacy_rates[12];
4173
4174 /* HT rate table. Intersection of our rates and peer rates. */
4175 __u8 ht_rates[16];
4176 __u8 pad[16];
4177
4178 /* If set, interoperability mode, no proprietary extensions. */
4179 __u8 interop;
4180 __u8 pad2;
4181 __u8 station_id;
4182 __le16 amsdu_enabled;
4183 } __packed;
4184
4185 struct mwl8k_cmd_update_stadb {
4186 struct mwl8k_cmd_pkt header;
4187
4188 /* See STADB_ACTION_TYPE */
4189 __le32 action;
4190
4191 /* Peer MAC address */
4192 __u8 peer_addr[ETH_ALEN];
4193
4194 __le32 reserved;
4195
4196 /* Peer info - valid during add/update. */
4197 struct peer_capability_info peer_info;
4198 } __packed;
4199
4200 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4201 #define MWL8K_STA_DB_DEL_ENTRY 2
4202
4203 /* Peer Entry flags - used to define the type of the peer node */
4204 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4205
4206 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4207 struct ieee80211_vif *vif,
4208 struct ieee80211_sta *sta)
4209 {
4210 struct mwl8k_cmd_update_stadb *cmd;
4211 struct peer_capability_info *p;
4212 u32 rates;
4213 int rc;
4214
4215 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4216 if (cmd == NULL)
4217 return -ENOMEM;
4218
4219 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4220 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4221 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4222 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4223
4224 p = &cmd->peer_info;
4225 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4226 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4227 p->ht_support = sta->ht_cap.ht_supported;
4228 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4229 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4230 ((sta->ht_cap.ampdu_density & 7) << 2);
4231 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4232 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4233 else
4234 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4235 legacy_rate_mask_to_array(p->legacy_rates, rates);
4236 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4237 p->interop = 1;
4238 p->amsdu_enabled = 0;
4239
4240 rc = mwl8k_post_cmd(hw, &cmd->header);
4241 kfree(cmd);
4242
4243 return rc ? rc : p->station_id;
4244 }
4245
4246 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4247 struct ieee80211_vif *vif, u8 *addr)
4248 {
4249 struct mwl8k_cmd_update_stadb *cmd;
4250 int rc;
4251
4252 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4253 if (cmd == NULL)
4254 return -ENOMEM;
4255
4256 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4257 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4258 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4259 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4260
4261 rc = mwl8k_post_cmd(hw, &cmd->header);
4262 kfree(cmd);
4263
4264 return rc;
4265 }
4266
4267
4268 /*
4269 * Interrupt handling.
4270 */
4271 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4272 {
4273 struct ieee80211_hw *hw = dev_id;
4274 struct mwl8k_priv *priv = hw->priv;
4275 u32 status;
4276
4277 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4278 if (!status)
4279 return IRQ_NONE;
4280
4281 if (status & MWL8K_A2H_INT_TX_DONE) {
4282 status &= ~MWL8K_A2H_INT_TX_DONE;
4283 tasklet_schedule(&priv->poll_tx_task);
4284 }
4285
4286 if (status & MWL8K_A2H_INT_RX_READY) {
4287 status &= ~MWL8K_A2H_INT_RX_READY;
4288 tasklet_schedule(&priv->poll_rx_task);
4289 }
4290
4291 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4292 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4293 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4294 }
4295
4296 if (status)
4297 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4298
4299 if (status & MWL8K_A2H_INT_OPC_DONE) {
4300 if (priv->hostcmd_wait != NULL)
4301 complete(priv->hostcmd_wait);
4302 }
4303
4304 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4305 if (!mutex_is_locked(&priv->fw_mutex) &&
4306 priv->radio_on && priv->pending_tx_pkts)
4307 mwl8k_tx_start(priv);
4308 }
4309
4310 return IRQ_HANDLED;
4311 }
4312
4313 static void mwl8k_tx_poll(unsigned long data)
4314 {
4315 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4316 struct mwl8k_priv *priv = hw->priv;
4317 int limit;
4318 int i;
4319
4320 limit = 32;
4321
4322 spin_lock_bh(&priv->tx_lock);
4323
4324 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4325 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4326
4327 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4328 complete(priv->tx_wait);
4329 priv->tx_wait = NULL;
4330 }
4331
4332 spin_unlock_bh(&priv->tx_lock);
4333
4334 if (limit) {
4335 writel(~MWL8K_A2H_INT_TX_DONE,
4336 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4337 } else {
4338 tasklet_schedule(&priv->poll_tx_task);
4339 }
4340 }
4341
4342 static void mwl8k_rx_poll(unsigned long data)
4343 {
4344 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4345 struct mwl8k_priv *priv = hw->priv;
4346 int limit;
4347
4348 limit = 32;
4349 limit -= rxq_process(hw, 0, limit);
4350 limit -= rxq_refill(hw, 0, limit);
4351
4352 if (limit) {
4353 writel(~MWL8K_A2H_INT_RX_READY,
4354 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4355 } else {
4356 tasklet_schedule(&priv->poll_rx_task);
4357 }
4358 }
4359
4360
4361 /*
4362 * Core driver operations.
4363 */
4364 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4365 {
4366 struct mwl8k_priv *priv = hw->priv;
4367 int index = skb_get_queue_mapping(skb);
4368
4369 if (!priv->radio_on) {
4370 wiphy_debug(hw->wiphy,
4371 "dropped TX frame since radio disabled\n");
4372 dev_kfree_skb(skb);
4373 return;
4374 }
4375
4376 mwl8k_txq_xmit(hw, index, skb);
4377 }
4378
4379 static int mwl8k_start(struct ieee80211_hw *hw)
4380 {
4381 struct mwl8k_priv *priv = hw->priv;
4382 int rc;
4383
4384 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4385 IRQF_SHARED, MWL8K_NAME, hw);
4386 if (rc) {
4387 priv->irq = -1;
4388 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4389 return -EIO;
4390 }
4391 priv->irq = priv->pdev->irq;
4392
4393 /* Enable TX reclaim and RX tasklets. */
4394 tasklet_enable(&priv->poll_tx_task);
4395 tasklet_enable(&priv->poll_rx_task);
4396
4397 /* Enable interrupts */
4398 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4399 iowrite32(MWL8K_A2H_EVENTS,
4400 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4401
4402 rc = mwl8k_fw_lock(hw);
4403 if (!rc) {
4404 rc = mwl8k_cmd_radio_enable(hw);
4405
4406 if (!priv->ap_fw) {
4407 if (!rc)
4408 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4409
4410 if (!rc)
4411 rc = mwl8k_cmd_set_pre_scan(hw);
4412
4413 if (!rc)
4414 rc = mwl8k_cmd_set_post_scan(hw,
4415 "\x00\x00\x00\x00\x00\x00");
4416 }
4417
4418 if (!rc)
4419 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4420
4421 if (!rc)
4422 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4423
4424 mwl8k_fw_unlock(hw);
4425 }
4426
4427 if (rc) {
4428 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4429 free_irq(priv->pdev->irq, hw);
4430 priv->irq = -1;
4431 tasklet_disable(&priv->poll_tx_task);
4432 tasklet_disable(&priv->poll_rx_task);
4433 }
4434
4435 return rc;
4436 }
4437
4438 static void mwl8k_stop(struct ieee80211_hw *hw)
4439 {
4440 struct mwl8k_priv *priv = hw->priv;
4441 int i;
4442
4443 if (!priv->hw_restart_in_progress)
4444 mwl8k_cmd_radio_disable(hw);
4445
4446 ieee80211_stop_queues(hw);
4447
4448 /* Disable interrupts */
4449 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4450 if (priv->irq != -1) {
4451 free_irq(priv->pdev->irq, hw);
4452 priv->irq = -1;
4453 }
4454
4455 /* Stop finalize join worker */
4456 cancel_work_sync(&priv->finalize_join_worker);
4457 cancel_work_sync(&priv->watchdog_ba_handle);
4458 if (priv->beacon_skb != NULL)
4459 dev_kfree_skb(priv->beacon_skb);
4460
4461 /* Stop TX reclaim and RX tasklets. */
4462 tasklet_disable(&priv->poll_tx_task);
4463 tasklet_disable(&priv->poll_rx_task);
4464
4465 /* Return all skbs to mac80211 */
4466 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4467 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4468 }
4469
4470 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4471
4472 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4473 struct ieee80211_vif *vif)
4474 {
4475 struct mwl8k_priv *priv = hw->priv;
4476 struct mwl8k_vif *mwl8k_vif;
4477 u32 macids_supported;
4478 int macid, rc;
4479 struct mwl8k_device_info *di;
4480
4481 /*
4482 * Reject interface creation if sniffer mode is active, as
4483 * STA operation is mutually exclusive with hardware sniffer
4484 * mode. (Sniffer mode is only used on STA firmware.)
4485 */
4486 if (priv->sniffer_enabled) {
4487 wiphy_info(hw->wiphy,
4488 "unable to create STA interface because sniffer mode is enabled\n");
4489 return -EINVAL;
4490 }
4491
4492 di = priv->device_info;
4493 switch (vif->type) {
4494 case NL80211_IFTYPE_AP:
4495 if (!priv->ap_fw && di->fw_image_ap) {
4496 /* we must load the ap fw to meet this request */
4497 if (!list_empty(&priv->vif_list))
4498 return -EBUSY;
4499 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4500 if (rc)
4501 return rc;
4502 }
4503 macids_supported = priv->ap_macids_supported;
4504 break;
4505 case NL80211_IFTYPE_STATION:
4506 if (priv->ap_fw && di->fw_image_sta) {
4507 /* we must load the sta fw to meet this request */
4508 if (!list_empty(&priv->vif_list))
4509 return -EBUSY;
4510 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4511 if (rc)
4512 return rc;
4513 }
4514 macids_supported = priv->sta_macids_supported;
4515 break;
4516 default:
4517 return -EINVAL;
4518 }
4519
4520 macid = ffs(macids_supported & ~priv->macids_used);
4521 if (!macid--)
4522 return -EBUSY;
4523
4524 /* Setup driver private area. */
4525 mwl8k_vif = MWL8K_VIF(vif);
4526 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4527 mwl8k_vif->vif = vif;
4528 mwl8k_vif->macid = macid;
4529 mwl8k_vif->seqno = 0;
4530 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4531 mwl8k_vif->is_hw_crypto_enabled = false;
4532
4533 /* Set the mac address. */
4534 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4535
4536 if (priv->ap_fw)
4537 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4538
4539 priv->macids_used |= 1 << mwl8k_vif->macid;
4540 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4541
4542 return 0;
4543 }
4544
4545 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4546 {
4547 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4548 if (!priv->macids_used)
4549 return;
4550
4551 priv->macids_used &= ~(1 << vif->macid);
4552 list_del(&vif->list);
4553 }
4554
4555 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4556 struct ieee80211_vif *vif)
4557 {
4558 struct mwl8k_priv *priv = hw->priv;
4559 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4560
4561 if (priv->ap_fw)
4562 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4563
4564 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4565
4566 mwl8k_remove_vif(priv, mwl8k_vif);
4567 }
4568
4569 static void mwl8k_hw_restart_work(struct work_struct *work)
4570 {
4571 struct mwl8k_priv *priv =
4572 container_of(work, struct mwl8k_priv, fw_reload);
4573 struct ieee80211_hw *hw = priv->hw;
4574 struct mwl8k_device_info *di;
4575 int rc;
4576
4577 /* If some command is waiting for a response, clear it */
4578 if (priv->hostcmd_wait != NULL) {
4579 complete(priv->hostcmd_wait);
4580 priv->hostcmd_wait = NULL;
4581 }
4582
4583 priv->hw_restart_owner = current;
4584 di = priv->device_info;
4585 mwl8k_fw_lock(hw);
4586
4587 if (priv->ap_fw)
4588 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4589 else
4590 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4591
4592 if (rc)
4593 goto fail;
4594
4595 priv->hw_restart_owner = NULL;
4596 priv->hw_restart_in_progress = false;
4597
4598 /*
4599 * This unlock will wake up the queues and
4600 * also opens the command path for other
4601 * commands
4602 */
4603 mwl8k_fw_unlock(hw);
4604
4605 ieee80211_restart_hw(hw);
4606
4607 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4608
4609 return;
4610 fail:
4611 mwl8k_fw_unlock(hw);
4612
4613 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4614 }
4615
4616 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4617 {
4618 struct ieee80211_conf *conf = &hw->conf;
4619 struct mwl8k_priv *priv = hw->priv;
4620 int rc;
4621
4622 if (conf->flags & IEEE80211_CONF_IDLE) {
4623 mwl8k_cmd_radio_disable(hw);
4624 return 0;
4625 }
4626
4627 rc = mwl8k_fw_lock(hw);
4628 if (rc)
4629 return rc;
4630
4631 rc = mwl8k_cmd_radio_enable(hw);
4632 if (rc)
4633 goto out;
4634
4635 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4636 if (rc)
4637 goto out;
4638
4639 if (conf->power_level > 18)
4640 conf->power_level = 18;
4641
4642 if (priv->ap_fw) {
4643
4644 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4645 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4646 if (rc)
4647 goto out;
4648 }
4649
4650 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4651 if (rc)
4652 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4653 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4654 if (rc)
4655 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4656
4657 } else {
4658 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4659 if (rc)
4660 goto out;
4661 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4662 }
4663
4664 out:
4665 mwl8k_fw_unlock(hw);
4666
4667 return rc;
4668 }
4669
4670 static void
4671 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4672 struct ieee80211_bss_conf *info, u32 changed)
4673 {
4674 struct mwl8k_priv *priv = hw->priv;
4675 u32 ap_legacy_rates = 0;
4676 u8 ap_mcs_rates[16];
4677 int rc;
4678
4679 if (mwl8k_fw_lock(hw))
4680 return;
4681
4682 /*
4683 * No need to capture a beacon if we're no longer associated.
4684 */
4685 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4686 priv->capture_beacon = false;
4687
4688 /*
4689 * Get the AP's legacy and MCS rates.
4690 */
4691 if (vif->bss_conf.assoc) {
4692 struct ieee80211_sta *ap;
4693
4694 rcu_read_lock();
4695
4696 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4697 if (ap == NULL) {
4698 rcu_read_unlock();
4699 goto out;
4700 }
4701
4702 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4703 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4704 } else {
4705 ap_legacy_rates =
4706 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4707 }
4708 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4709
4710 rcu_read_unlock();
4711 }
4712
4713 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4714 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4715 if (rc)
4716 goto out;
4717
4718 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4719 if (rc)
4720 goto out;
4721 }
4722
4723 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4724 rc = mwl8k_set_radio_preamble(hw,
4725 vif->bss_conf.use_short_preamble);
4726 if (rc)
4727 goto out;
4728 }
4729
4730 if (changed & BSS_CHANGED_ERP_SLOT) {
4731 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4732 if (rc)
4733 goto out;
4734 }
4735
4736 if (vif->bss_conf.assoc &&
4737 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4738 BSS_CHANGED_HT))) {
4739 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4740 if (rc)
4741 goto out;
4742 }
4743
4744 if (vif->bss_conf.assoc &&
4745 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4746 /*
4747 * Finalize the join. Tell rx handler to process
4748 * next beacon from our BSSID.
4749 */
4750 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4751 priv->capture_beacon = true;
4752 }
4753
4754 out:
4755 mwl8k_fw_unlock(hw);
4756 }
4757
4758 static void
4759 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4760 struct ieee80211_bss_conf *info, u32 changed)
4761 {
4762 int rc;
4763
4764 if (mwl8k_fw_lock(hw))
4765 return;
4766
4767 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4768 rc = mwl8k_set_radio_preamble(hw,
4769 vif->bss_conf.use_short_preamble);
4770 if (rc)
4771 goto out;
4772 }
4773
4774 if (changed & BSS_CHANGED_BASIC_RATES) {
4775 int idx;
4776 int rate;
4777
4778 /*
4779 * Use lowest supported basic rate for multicasts
4780 * and management frames (such as probe responses --
4781 * beacons will always go out at 1 Mb/s).
4782 */
4783 idx = ffs(vif->bss_conf.basic_rates);
4784 if (idx)
4785 idx--;
4786
4787 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4788 rate = mwl8k_rates_24[idx].hw_value;
4789 else
4790 rate = mwl8k_rates_50[idx].hw_value;
4791
4792 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4793 }
4794
4795 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4796 struct sk_buff *skb;
4797
4798 skb = ieee80211_beacon_get(hw, vif);
4799 if (skb != NULL) {
4800 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4801 kfree_skb(skb);
4802 }
4803 }
4804
4805 if (changed & BSS_CHANGED_BEACON_ENABLED)
4806 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4807
4808 out:
4809 mwl8k_fw_unlock(hw);
4810 }
4811
4812 static void
4813 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4814 struct ieee80211_bss_conf *info, u32 changed)
4815 {
4816 struct mwl8k_priv *priv = hw->priv;
4817
4818 if (!priv->ap_fw)
4819 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4820 else
4821 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4822 }
4823
4824 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4825 struct netdev_hw_addr_list *mc_list)
4826 {
4827 struct mwl8k_cmd_pkt *cmd;
4828
4829 /*
4830 * Synthesize and return a command packet that programs the
4831 * hardware multicast address filter. At this point we don't
4832 * know whether FIF_ALLMULTI is being requested, but if it is,
4833 * we'll end up throwing this packet away and creating a new
4834 * one in mwl8k_configure_filter().
4835 */
4836 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4837
4838 return (unsigned long)cmd;
4839 }
4840
4841 static int
4842 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4843 unsigned int changed_flags,
4844 unsigned int *total_flags)
4845 {
4846 struct mwl8k_priv *priv = hw->priv;
4847
4848 /*
4849 * Hardware sniffer mode is mutually exclusive with STA
4850 * operation, so refuse to enable sniffer mode if a STA
4851 * interface is active.
4852 */
4853 if (!list_empty(&priv->vif_list)) {
4854 if (net_ratelimit())
4855 wiphy_info(hw->wiphy,
4856 "not enabling sniffer mode because STA interface is active\n");
4857 return 0;
4858 }
4859
4860 if (!priv->sniffer_enabled) {
4861 if (mwl8k_cmd_enable_sniffer(hw, 1))
4862 return 0;
4863 priv->sniffer_enabled = true;
4864 }
4865
4866 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4867 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4868 FIF_OTHER_BSS;
4869
4870 return 1;
4871 }
4872
4873 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4874 {
4875 if (!list_empty(&priv->vif_list))
4876 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4877
4878 return NULL;
4879 }
4880
4881 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4882 unsigned int changed_flags,
4883 unsigned int *total_flags,
4884 u64 multicast)
4885 {
4886 struct mwl8k_priv *priv = hw->priv;
4887 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4888
4889 /*
4890 * AP firmware doesn't allow fine-grained control over
4891 * the receive filter.
4892 */
4893 if (priv->ap_fw) {
4894 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4895 kfree(cmd);
4896 return;
4897 }
4898
4899 /*
4900 * Enable hardware sniffer mode if FIF_CONTROL or
4901 * FIF_OTHER_BSS is requested.
4902 */
4903 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4904 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4905 kfree(cmd);
4906 return;
4907 }
4908
4909 /* Clear unsupported feature flags */
4910 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4911
4912 if (mwl8k_fw_lock(hw)) {
4913 kfree(cmd);
4914 return;
4915 }
4916
4917 if (priv->sniffer_enabled) {
4918 mwl8k_cmd_enable_sniffer(hw, 0);
4919 priv->sniffer_enabled = false;
4920 }
4921
4922 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4923 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4924 /*
4925 * Disable the BSS filter.
4926 */
4927 mwl8k_cmd_set_pre_scan(hw);
4928 } else {
4929 struct mwl8k_vif *mwl8k_vif;
4930 const u8 *bssid;
4931
4932 /*
4933 * Enable the BSS filter.
4934 *
4935 * If there is an active STA interface, use that
4936 * interface's BSSID, otherwise use a dummy one
4937 * (where the OUI part needs to be nonzero for
4938 * the BSSID to be accepted by POST_SCAN).
4939 */
4940 mwl8k_vif = mwl8k_first_vif(priv);
4941 if (mwl8k_vif != NULL)
4942 bssid = mwl8k_vif->vif->bss_conf.bssid;
4943 else
4944 bssid = "\x01\x00\x00\x00\x00\x00";
4945
4946 mwl8k_cmd_set_post_scan(hw, bssid);
4947 }
4948 }
4949
4950 /*
4951 * If FIF_ALLMULTI is being requested, throw away the command
4952 * packet that ->prepare_multicast() built and replace it with
4953 * a command packet that enables reception of all multicast
4954 * packets.
4955 */
4956 if (*total_flags & FIF_ALLMULTI) {
4957 kfree(cmd);
4958 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4959 }
4960
4961 if (cmd != NULL) {
4962 mwl8k_post_cmd(hw, cmd);
4963 kfree(cmd);
4964 }
4965
4966 mwl8k_fw_unlock(hw);
4967 }
4968
4969 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4970 {
4971 return mwl8k_cmd_set_rts_threshold(hw, value);
4972 }
4973
4974 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4975 struct ieee80211_vif *vif,
4976 struct ieee80211_sta *sta)
4977 {
4978 struct mwl8k_priv *priv = hw->priv;
4979
4980 if (priv->ap_fw)
4981 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4982 else
4983 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4984 }
4985
4986 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4987 struct ieee80211_vif *vif,
4988 struct ieee80211_sta *sta)
4989 {
4990 struct mwl8k_priv *priv = hw->priv;
4991 int ret;
4992 int i;
4993 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4994 struct ieee80211_key_conf *key;
4995
4996 if (!priv->ap_fw) {
4997 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4998 if (ret >= 0) {
4999 MWL8K_STA(sta)->peer_id = ret;
5000 if (sta->ht_cap.ht_supported)
5001 MWL8K_STA(sta)->is_ampdu_allowed = true;
5002 ret = 0;
5003 }
5004
5005 } else {
5006 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5007 }
5008
5009 for (i = 0; i < NUM_WEP_KEYS; i++) {
5010 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5011 if (mwl8k_vif->wep_key_conf[i].enabled)
5012 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5013 }
5014 return ret;
5015 }
5016
5017 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5018 struct ieee80211_vif *vif, u16 queue,
5019 const struct ieee80211_tx_queue_params *params)
5020 {
5021 struct mwl8k_priv *priv = hw->priv;
5022 int rc;
5023
5024 rc = mwl8k_fw_lock(hw);
5025 if (!rc) {
5026 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5027 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5028
5029 if (!priv->wmm_enabled)
5030 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5031
5032 if (!rc) {
5033 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5034 rc = mwl8k_cmd_set_edca_params(hw, q,
5035 params->cw_min,
5036 params->cw_max,
5037 params->aifs,
5038 params->txop);
5039 }
5040
5041 mwl8k_fw_unlock(hw);
5042 }
5043
5044 return rc;
5045 }
5046
5047 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5048 struct ieee80211_low_level_stats *stats)
5049 {
5050 return mwl8k_cmd_get_stat(hw, stats);
5051 }
5052
5053 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5054 struct survey_info *survey)
5055 {
5056 struct mwl8k_priv *priv = hw->priv;
5057 struct ieee80211_conf *conf = &hw->conf;
5058
5059 if (idx != 0)
5060 return -ENOENT;
5061
5062 survey->channel = conf->channel;
5063 survey->filled = SURVEY_INFO_NOISE_DBM;
5064 survey->noise = priv->noise;
5065
5066 return 0;
5067 }
5068
5069 #define MAX_AMPDU_ATTEMPTS 5
5070
5071 static int
5072 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5073 enum ieee80211_ampdu_mlme_action action,
5074 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5075 u8 buf_size)
5076 {
5077
5078 int i, rc = 0;
5079 struct mwl8k_priv *priv = hw->priv;
5080 struct mwl8k_ampdu_stream *stream;
5081 u8 *addr = sta->addr;
5082
5083 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5084 return -ENOTSUPP;
5085
5086 spin_lock(&priv->stream_lock);
5087 stream = mwl8k_lookup_stream(hw, addr, tid);
5088
5089 switch (action) {
5090 case IEEE80211_AMPDU_RX_START:
5091 case IEEE80211_AMPDU_RX_STOP:
5092 break;
5093 case IEEE80211_AMPDU_TX_START:
5094 /* By the time we get here the hw queues may contain outgoing
5095 * packets for this RA/TID that are not part of this BA
5096 * session. The hw will assign sequence numbers to these
5097 * packets as they go out. So if we query the hw for its next
5098 * sequence number and use that for the SSN here, it may end up
5099 * being wrong, which will lead to sequence number mismatch at
5100 * the recipient. To avoid this, we reset the sequence number
5101 * to O for the first MPDU in this BA stream.
5102 */
5103 *ssn = 0;
5104 if (stream == NULL) {
5105 /* This means that somebody outside this driver called
5106 * ieee80211_start_tx_ba_session. This is unexpected
5107 * because we do our own rate control. Just warn and
5108 * move on.
5109 */
5110 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5111 "Proceeding anyway.\n", __func__);
5112 stream = mwl8k_add_stream(hw, sta, tid);
5113 }
5114 if (stream == NULL) {
5115 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5116 rc = -EBUSY;
5117 break;
5118 }
5119 stream->state = AMPDU_STREAM_IN_PROGRESS;
5120
5121 /* Release the lock before we do the time consuming stuff */
5122 spin_unlock(&priv->stream_lock);
5123 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5124 rc = mwl8k_check_ba(hw, stream);
5125
5126 /* If HW restart is in progress mwl8k_post_cmd will
5127 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5128 * such cases
5129 */
5130 if (!rc || rc == -EBUSY)
5131 break;
5132 /*
5133 * HW queues take time to be flushed, give them
5134 * sufficient time
5135 */
5136
5137 msleep(1000);
5138 }
5139 spin_lock(&priv->stream_lock);
5140 if (rc) {
5141 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5142 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5143 mwl8k_remove_stream(hw, stream);
5144 rc = -EBUSY;
5145 break;
5146 }
5147 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5148 break;
5149 case IEEE80211_AMPDU_TX_STOP:
5150 if (stream) {
5151 if (stream->state == AMPDU_STREAM_ACTIVE) {
5152 spin_unlock(&priv->stream_lock);
5153 mwl8k_destroy_ba(hw, stream);
5154 spin_lock(&priv->stream_lock);
5155 }
5156 mwl8k_remove_stream(hw, stream);
5157 }
5158 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5159 break;
5160 case IEEE80211_AMPDU_TX_OPERATIONAL:
5161 BUG_ON(stream == NULL);
5162 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5163 spin_unlock(&priv->stream_lock);
5164 rc = mwl8k_create_ba(hw, stream, buf_size);
5165 spin_lock(&priv->stream_lock);
5166 if (!rc)
5167 stream->state = AMPDU_STREAM_ACTIVE;
5168 else {
5169 spin_unlock(&priv->stream_lock);
5170 mwl8k_destroy_ba(hw, stream);
5171 spin_lock(&priv->stream_lock);
5172 wiphy_debug(hw->wiphy,
5173 "Failed adding stream for sta %pM tid %d\n",
5174 addr, tid);
5175 mwl8k_remove_stream(hw, stream);
5176 }
5177 break;
5178
5179 default:
5180 rc = -ENOTSUPP;
5181 }
5182
5183 spin_unlock(&priv->stream_lock);
5184 return rc;
5185 }
5186
5187 static const struct ieee80211_ops mwl8k_ops = {
5188 .tx = mwl8k_tx,
5189 .start = mwl8k_start,
5190 .stop = mwl8k_stop,
5191 .add_interface = mwl8k_add_interface,
5192 .remove_interface = mwl8k_remove_interface,
5193 .config = mwl8k_config,
5194 .bss_info_changed = mwl8k_bss_info_changed,
5195 .prepare_multicast = mwl8k_prepare_multicast,
5196 .configure_filter = mwl8k_configure_filter,
5197 .set_key = mwl8k_set_key,
5198 .set_rts_threshold = mwl8k_set_rts_threshold,
5199 .sta_add = mwl8k_sta_add,
5200 .sta_remove = mwl8k_sta_remove,
5201 .conf_tx = mwl8k_conf_tx,
5202 .get_stats = mwl8k_get_stats,
5203 .get_survey = mwl8k_get_survey,
5204 .ampdu_action = mwl8k_ampdu_action,
5205 };
5206
5207 static void mwl8k_finalize_join_worker(struct work_struct *work)
5208 {
5209 struct mwl8k_priv *priv =
5210 container_of(work, struct mwl8k_priv, finalize_join_worker);
5211 struct sk_buff *skb = priv->beacon_skb;
5212 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5213 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5214 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5215 mgmt->u.beacon.variable, len);
5216 int dtim_period = 1;
5217
5218 if (tim && tim[1] >= 2)
5219 dtim_period = tim[3];
5220
5221 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5222
5223 dev_kfree_skb(skb);
5224 priv->beacon_skb = NULL;
5225 }
5226
5227 enum {
5228 MWL8363 = 0,
5229 MWL8687,
5230 MWL8366,
5231 };
5232
5233 #define MWL8K_8366_AP_FW_API 2
5234 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5235 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5236
5237 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5238 [MWL8363] = {
5239 .part_name = "88w8363",
5240 .helper_image = "mwl8k/helper_8363.fw",
5241 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5242 },
5243 [MWL8687] = {
5244 .part_name = "88w8687",
5245 .helper_image = "mwl8k/helper_8687.fw",
5246 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5247 },
5248 [MWL8366] = {
5249 .part_name = "88w8366",
5250 .helper_image = "mwl8k/helper_8366.fw",
5251 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5252 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5253 .fw_api_ap = MWL8K_8366_AP_FW_API,
5254 .ap_rxd_ops = &rxd_8366_ap_ops,
5255 },
5256 };
5257
5258 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5259 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5260 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5261 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5262 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5263 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5264 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5265
5266 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5267 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5268 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5269 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5270 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5271 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5272 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5273 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5274 { },
5275 };
5276 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5277
5278 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5279 {
5280 int rc;
5281 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5282 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5283 priv->fw_pref, priv->fw_alt);
5284 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5285 if (rc) {
5286 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5287 pci_name(priv->pdev), priv->fw_alt);
5288 return rc;
5289 }
5290 return 0;
5291 }
5292
5293 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5294 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5295 {
5296 struct mwl8k_priv *priv = context;
5297 struct mwl8k_device_info *di = priv->device_info;
5298 int rc;
5299
5300 switch (priv->fw_state) {
5301 case FW_STATE_INIT:
5302 if (!fw) {
5303 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5304 pci_name(priv->pdev), di->helper_image);
5305 goto fail;
5306 }
5307 priv->fw_helper = fw;
5308 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5309 true);
5310 if (rc && priv->fw_alt) {
5311 rc = mwl8k_request_alt_fw(priv);
5312 if (rc)
5313 goto fail;
5314 priv->fw_state = FW_STATE_LOADING_ALT;
5315 } else if (rc)
5316 goto fail;
5317 else
5318 priv->fw_state = FW_STATE_LOADING_PREF;
5319 break;
5320
5321 case FW_STATE_LOADING_PREF:
5322 if (!fw) {
5323 if (priv->fw_alt) {
5324 rc = mwl8k_request_alt_fw(priv);
5325 if (rc)
5326 goto fail;
5327 priv->fw_state = FW_STATE_LOADING_ALT;
5328 } else
5329 goto fail;
5330 } else {
5331 priv->fw_ucode = fw;
5332 rc = mwl8k_firmware_load_success(priv);
5333 if (rc)
5334 goto fail;
5335 else
5336 complete(&priv->firmware_loading_complete);
5337 }
5338 break;
5339
5340 case FW_STATE_LOADING_ALT:
5341 if (!fw) {
5342 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5343 pci_name(priv->pdev), di->helper_image);
5344 goto fail;
5345 }
5346 priv->fw_ucode = fw;
5347 rc = mwl8k_firmware_load_success(priv);
5348 if (rc)
5349 goto fail;
5350 else
5351 complete(&priv->firmware_loading_complete);
5352 break;
5353
5354 default:
5355 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5356 MWL8K_NAME, priv->fw_state);
5357 BUG_ON(1);
5358 }
5359
5360 return;
5361
5362 fail:
5363 priv->fw_state = FW_STATE_ERROR;
5364 complete(&priv->firmware_loading_complete);
5365 device_release_driver(&priv->pdev->dev);
5366 mwl8k_release_firmware(priv);
5367 }
5368
5369 #define MAX_RESTART_ATTEMPTS 1
5370 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5371 bool nowait)
5372 {
5373 struct mwl8k_priv *priv = hw->priv;
5374 int rc;
5375 int count = MAX_RESTART_ATTEMPTS;
5376
5377 retry:
5378 /* Reset firmware and hardware */
5379 mwl8k_hw_reset(priv);
5380
5381 /* Ask userland hotplug daemon for the device firmware */
5382 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5383 if (rc) {
5384 wiphy_err(hw->wiphy, "Firmware files not found\n");
5385 return rc;
5386 }
5387
5388 if (nowait)
5389 return rc;
5390
5391 /* Load firmware into hardware */
5392 rc = mwl8k_load_firmware(hw);
5393 if (rc)
5394 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5395
5396 /* Reclaim memory once firmware is successfully loaded */
5397 mwl8k_release_firmware(priv);
5398
5399 if (rc && count) {
5400 /* FW did not start successfully;
5401 * lets try one more time
5402 */
5403 count--;
5404 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5405 msleep(20);
5406 goto retry;
5407 }
5408
5409 return rc;
5410 }
5411
5412 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5413 {
5414 struct mwl8k_priv *priv = hw->priv;
5415 int rc = 0;
5416 int i;
5417
5418 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5419 rc = mwl8k_txq_init(hw, i);
5420 if (rc)
5421 break;
5422 if (priv->ap_fw)
5423 iowrite32(priv->txq[i].txd_dma,
5424 priv->sram + priv->txq_offset[i]);
5425 }
5426 return rc;
5427 }
5428
5429 /* initialize hw after successfully loading a firmware image */
5430 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5431 {
5432 struct mwl8k_priv *priv = hw->priv;
5433 int rc = 0;
5434 int i;
5435
5436 if (priv->ap_fw) {
5437 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5438 if (priv->rxd_ops == NULL) {
5439 wiphy_err(hw->wiphy,
5440 "Driver does not have AP firmware image support for this hardware\n");
5441 goto err_stop_firmware;
5442 }
5443 } else {
5444 priv->rxd_ops = &rxd_sta_ops;
5445 }
5446
5447 priv->sniffer_enabled = false;
5448 priv->wmm_enabled = false;
5449 priv->pending_tx_pkts = 0;
5450
5451 rc = mwl8k_rxq_init(hw, 0);
5452 if (rc)
5453 goto err_stop_firmware;
5454 rxq_refill(hw, 0, INT_MAX);
5455
5456 /* For the sta firmware, we need to know the dma addresses of tx queues
5457 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5458 * prior to issuing this command. But for the AP case, we learn the
5459 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5460 * case we must initialize the tx queues after.
5461 */
5462 priv->num_ampdu_queues = 0;
5463 if (!priv->ap_fw) {
5464 rc = mwl8k_init_txqs(hw);
5465 if (rc)
5466 goto err_free_queues;
5467 }
5468
5469 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5470 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5471 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5472 MWL8K_A2H_INT_BA_WATCHDOG,
5473 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5474 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5475 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5476
5477 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5478 IRQF_SHARED, MWL8K_NAME, hw);
5479 if (rc) {
5480 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5481 goto err_free_queues;
5482 }
5483
5484 /*
5485 * When hw restart is requested,
5486 * mac80211 will take care of clearing
5487 * the ampdu streams, so do not clear
5488 * the ampdu state here
5489 */
5490 if (!priv->hw_restart_in_progress)
5491 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5492
5493 /*
5494 * Temporarily enable interrupts. Initial firmware host
5495 * commands use interrupts and avoid polling. Disable
5496 * interrupts when done.
5497 */
5498 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5499
5500 /* Get config data, mac addrs etc */
5501 if (priv->ap_fw) {
5502 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5503 if (!rc)
5504 rc = mwl8k_init_txqs(hw);
5505 if (!rc)
5506 rc = mwl8k_cmd_set_hw_spec(hw);
5507 } else {
5508 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5509 }
5510 if (rc) {
5511 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5512 goto err_free_irq;
5513 }
5514
5515 /* Turn radio off */
5516 rc = mwl8k_cmd_radio_disable(hw);
5517 if (rc) {
5518 wiphy_err(hw->wiphy, "Cannot disable\n");
5519 goto err_free_irq;
5520 }
5521
5522 /* Clear MAC address */
5523 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5524 if (rc) {
5525 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5526 goto err_free_irq;
5527 }
5528
5529 /* Disable interrupts */
5530 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5531 free_irq(priv->pdev->irq, hw);
5532
5533 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5534 priv->device_info->part_name,
5535 priv->hw_rev, hw->wiphy->perm_addr,
5536 priv->ap_fw ? "AP" : "STA",
5537 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5538 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5539
5540 return 0;
5541
5542 err_free_irq:
5543 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5544 free_irq(priv->pdev->irq, hw);
5545
5546 err_free_queues:
5547 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5548 mwl8k_txq_deinit(hw, i);
5549 mwl8k_rxq_deinit(hw, 0);
5550
5551 err_stop_firmware:
5552 mwl8k_hw_reset(priv);
5553
5554 return rc;
5555 }
5556
5557 /*
5558 * invoke mwl8k_reload_firmware to change the firmware image after the device
5559 * has already been registered
5560 */
5561 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5562 {
5563 int i, rc = 0;
5564 struct mwl8k_priv *priv = hw->priv;
5565 struct mwl8k_vif *vif, *tmp_vif;
5566
5567 mwl8k_stop(hw);
5568 mwl8k_rxq_deinit(hw, 0);
5569
5570 /*
5571 * All the existing interfaces are re-added by the ieee80211_reconfig;
5572 * which means driver should remove existing interfaces before calling
5573 * ieee80211_restart_hw
5574 */
5575 if (priv->hw_restart_in_progress)
5576 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5577 mwl8k_remove_vif(priv, vif);
5578
5579 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5580 mwl8k_txq_deinit(hw, i);
5581
5582 rc = mwl8k_init_firmware(hw, fw_image, false);
5583 if (rc)
5584 goto fail;
5585
5586 rc = mwl8k_probe_hw(hw);
5587 if (rc)
5588 goto fail;
5589
5590 if (priv->hw_restart_in_progress)
5591 return rc;
5592
5593 rc = mwl8k_start(hw);
5594 if (rc)
5595 goto fail;
5596
5597 rc = mwl8k_config(hw, ~0);
5598 if (rc)
5599 goto fail;
5600
5601 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5602 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5603 if (rc)
5604 goto fail;
5605 }
5606
5607 return rc;
5608
5609 fail:
5610 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5611 return rc;
5612 }
5613
5614 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5615 {
5616 struct ieee80211_hw *hw = priv->hw;
5617 int i, rc;
5618
5619 rc = mwl8k_load_firmware(hw);
5620 mwl8k_release_firmware(priv);
5621 if (rc) {
5622 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5623 return rc;
5624 }
5625
5626 /*
5627 * Extra headroom is the size of the required DMA header
5628 * minus the size of the smallest 802.11 frame (CTS frame).
5629 */
5630 hw->extra_tx_headroom =
5631 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5632
5633 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5634
5635 hw->channel_change_time = 10;
5636
5637 hw->queues = MWL8K_TX_WMM_QUEUES;
5638
5639 /* Set rssi values to dBm */
5640 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5641
5642 /*
5643 * Ask mac80211 to not to trigger PS mode
5644 * based on PM bit of incoming frames.
5645 */
5646 if (priv->ap_fw)
5647 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5648
5649 hw->vif_data_size = sizeof(struct mwl8k_vif);
5650 hw->sta_data_size = sizeof(struct mwl8k_sta);
5651
5652 priv->macids_used = 0;
5653 INIT_LIST_HEAD(&priv->vif_list);
5654
5655 /* Set default radio state and preamble */
5656 priv->radio_on = false;
5657 priv->radio_short_preamble = false;
5658
5659 /* Finalize join worker */
5660 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5661 /* Handle watchdog ba events */
5662 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5663 /* To reload the firmware if it crashes */
5664 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5665
5666 /* TX reclaim and RX tasklets. */
5667 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5668 tasklet_disable(&priv->poll_tx_task);
5669 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5670 tasklet_disable(&priv->poll_rx_task);
5671
5672 /* Power management cookie */
5673 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5674 if (priv->cookie == NULL)
5675 return -ENOMEM;
5676
5677 mutex_init(&priv->fw_mutex);
5678 priv->fw_mutex_owner = NULL;
5679 priv->fw_mutex_depth = 0;
5680 priv->hostcmd_wait = NULL;
5681
5682 spin_lock_init(&priv->tx_lock);
5683
5684 spin_lock_init(&priv->stream_lock);
5685
5686 priv->tx_wait = NULL;
5687
5688 rc = mwl8k_probe_hw(hw);
5689 if (rc)
5690 goto err_free_cookie;
5691
5692 hw->wiphy->interface_modes = 0;
5693 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5694 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5695 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5696 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5697
5698 rc = ieee80211_register_hw(hw);
5699 if (rc) {
5700 wiphy_err(hw->wiphy, "Cannot register device\n");
5701 goto err_unprobe_hw;
5702 }
5703
5704 return 0;
5705
5706 err_unprobe_hw:
5707 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5708 mwl8k_txq_deinit(hw, i);
5709 mwl8k_rxq_deinit(hw, 0);
5710
5711 err_free_cookie:
5712 if (priv->cookie != NULL)
5713 pci_free_consistent(priv->pdev, 4,
5714 priv->cookie, priv->cookie_dma);
5715
5716 return rc;
5717 }
5718 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5719 const struct pci_device_id *id)
5720 {
5721 static int printed_version;
5722 struct ieee80211_hw *hw;
5723 struct mwl8k_priv *priv;
5724 struct mwl8k_device_info *di;
5725 int rc;
5726
5727 if (!printed_version) {
5728 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5729 printed_version = 1;
5730 }
5731
5732
5733 rc = pci_enable_device(pdev);
5734 if (rc) {
5735 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5736 MWL8K_NAME);
5737 return rc;
5738 }
5739
5740 rc = pci_request_regions(pdev, MWL8K_NAME);
5741 if (rc) {
5742 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5743 MWL8K_NAME);
5744 goto err_disable_device;
5745 }
5746
5747 pci_set_master(pdev);
5748
5749
5750 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5751 if (hw == NULL) {
5752 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5753 rc = -ENOMEM;
5754 goto err_free_reg;
5755 }
5756
5757 SET_IEEE80211_DEV(hw, &pdev->dev);
5758 pci_set_drvdata(pdev, hw);
5759
5760 priv = hw->priv;
5761 priv->hw = hw;
5762 priv->pdev = pdev;
5763 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5764
5765
5766 priv->sram = pci_iomap(pdev, 0, 0x10000);
5767 if (priv->sram == NULL) {
5768 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5769 goto err_iounmap;
5770 }
5771
5772 /*
5773 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5774 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5775 */
5776 priv->regs = pci_iomap(pdev, 1, 0x10000);
5777 if (priv->regs == NULL) {
5778 priv->regs = pci_iomap(pdev, 2, 0x10000);
5779 if (priv->regs == NULL) {
5780 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5781 goto err_iounmap;
5782 }
5783 }
5784
5785 /*
5786 * Choose the initial fw image depending on user input. If a second
5787 * image is available, make it the alternative image that will be
5788 * loaded if the first one fails.
5789 */
5790 init_completion(&priv->firmware_loading_complete);
5791 di = priv->device_info;
5792 if (ap_mode_default && di->fw_image_ap) {
5793 priv->fw_pref = di->fw_image_ap;
5794 priv->fw_alt = di->fw_image_sta;
5795 } else if (!ap_mode_default && di->fw_image_sta) {
5796 priv->fw_pref = di->fw_image_sta;
5797 priv->fw_alt = di->fw_image_ap;
5798 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5799 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5800 priv->fw_pref = di->fw_image_sta;
5801 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5802 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5803 priv->fw_pref = di->fw_image_ap;
5804 }
5805 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5806 if (rc)
5807 goto err_stop_firmware;
5808
5809 priv->hw_restart_in_progress = false;
5810
5811 return rc;
5812
5813 err_stop_firmware:
5814 mwl8k_hw_reset(priv);
5815
5816 err_iounmap:
5817 if (priv->regs != NULL)
5818 pci_iounmap(pdev, priv->regs);
5819
5820 if (priv->sram != NULL)
5821 pci_iounmap(pdev, priv->sram);
5822
5823 pci_set_drvdata(pdev, NULL);
5824 ieee80211_free_hw(hw);
5825
5826 err_free_reg:
5827 pci_release_regions(pdev);
5828
5829 err_disable_device:
5830 pci_disable_device(pdev);
5831
5832 return rc;
5833 }
5834
5835 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5836 {
5837 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5838 }
5839
5840 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5841 {
5842 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5843 struct mwl8k_priv *priv;
5844 int i;
5845
5846 if (hw == NULL)
5847 return;
5848 priv = hw->priv;
5849
5850 wait_for_completion(&priv->firmware_loading_complete);
5851
5852 if (priv->fw_state == FW_STATE_ERROR) {
5853 mwl8k_hw_reset(priv);
5854 goto unmap;
5855 }
5856
5857 ieee80211_stop_queues(hw);
5858
5859 ieee80211_unregister_hw(hw);
5860
5861 /* Remove TX reclaim and RX tasklets. */
5862 tasklet_kill(&priv->poll_tx_task);
5863 tasklet_kill(&priv->poll_rx_task);
5864
5865 /* Stop hardware */
5866 mwl8k_hw_reset(priv);
5867
5868 /* Return all skbs to mac80211 */
5869 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5870 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5871
5872 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5873 mwl8k_txq_deinit(hw, i);
5874
5875 mwl8k_rxq_deinit(hw, 0);
5876
5877 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5878
5879 unmap:
5880 pci_iounmap(pdev, priv->regs);
5881 pci_iounmap(pdev, priv->sram);
5882 pci_set_drvdata(pdev, NULL);
5883 ieee80211_free_hw(hw);
5884 pci_release_regions(pdev);
5885 pci_disable_device(pdev);
5886 }
5887
5888 static struct pci_driver mwl8k_driver = {
5889 .name = MWL8K_NAME,
5890 .id_table = mwl8k_pci_id_table,
5891 .probe = mwl8k_probe,
5892 .remove = __devexit_p(mwl8k_remove),
5893 .shutdown = __devexit_p(mwl8k_shutdown),
5894 };
5895
5896 module_pci_driver(mwl8k_driver);
5897
5898 MODULE_DESCRIPTION(MWL8K_DESC);
5899 MODULE_VERSION(MWL8K_VERSION);
5900 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5901 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)