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b43legacy: drop invalid IMCFGLO workaround
[mirror_ubuntu-artful-kernel.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/module.h>
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
16 #include <linux/spinlock.h>
17 #include <linux/list.h>
18 #include <linux/pci.h>
19 #include <linux/delay.h>
20 #include <linux/completion.h>
21 #include <linux/etherdevice.h>
22 #include <linux/slab.h>
23 #include <net/mac80211.h>
24 #include <linux/moduleparam.h>
25 #include <linux/firmware.h>
26 #include <linux/workqueue.h>
27
28 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29 #define MWL8K_NAME KBUILD_MODNAME
30 #define MWL8K_VERSION "0.12"
31
32 /* Module parameters */
33 static unsigned ap_mode_default;
34 module_param(ap_mode_default, bool, 0);
35 MODULE_PARM_DESC(ap_mode_default,
36 "Set to 1 to make ap mode the default instead of sta mode");
37
38 /* Register definitions */
39 #define MWL8K_HIU_GEN_PTR 0x00000c10
40 #define MWL8K_MODE_STA 0x0000005a
41 #define MWL8K_MODE_AP 0x000000a5
42 #define MWL8K_HIU_INT_CODE 0x00000c14
43 #define MWL8K_FWSTA_READY 0xf0f1f2f4
44 #define MWL8K_FWAP_READY 0xf1f2f4a5
45 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
46 #define MWL8K_HIU_SCRATCH 0x00000c40
47
48 /* Host->device communications */
49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
51 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
54 #define MWL8K_H2A_INT_DUMMY (1 << 20)
55 #define MWL8K_H2A_INT_RESET (1 << 15)
56 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
57 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
58
59 /* Device->host communications */
60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
62 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
65 #define MWL8K_A2H_INT_DUMMY (1 << 20)
66 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
67 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
68 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
69 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
70 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
71 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
72 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
73 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
74 #define MWL8K_A2H_INT_RX_READY (1 << 1)
75 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
76
77 /* HW micro second timer register
78 * located at offset 0xA600. This
79 * will be used to timestamp tx
80 * packets.
81 */
82
83 #define MWL8K_HW_TIMER_REGISTER 0x0000a600
84
85 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
86 MWL8K_A2H_INT_CHNL_SWITCHED | \
87 MWL8K_A2H_INT_QUEUE_EMPTY | \
88 MWL8K_A2H_INT_RADAR_DETECT | \
89 MWL8K_A2H_INT_RADIO_ON | \
90 MWL8K_A2H_INT_RADIO_OFF | \
91 MWL8K_A2H_INT_MAC_EVENT | \
92 MWL8K_A2H_INT_OPC_DONE | \
93 MWL8K_A2H_INT_RX_READY | \
94 MWL8K_A2H_INT_TX_DONE | \
95 MWL8K_A2H_INT_BA_WATCHDOG)
96
97 #define MWL8K_RX_QUEUES 1
98 #define MWL8K_TX_WMM_QUEUES 4
99 #define MWL8K_MAX_AMPDU_QUEUES 8
100 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
101 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
102
103 struct rxd_ops {
104 int rxd_size;
105 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
106 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
107 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
108 __le16 *qos, s8 *noise);
109 };
110
111 struct mwl8k_device_info {
112 char *part_name;
113 char *helper_image;
114 char *fw_image_sta;
115 char *fw_image_ap;
116 struct rxd_ops *ap_rxd_ops;
117 u32 fw_api_ap;
118 };
119
120 struct mwl8k_rx_queue {
121 int rxd_count;
122
123 /* hw receives here */
124 int head;
125
126 /* refill descs here */
127 int tail;
128
129 void *rxd;
130 dma_addr_t rxd_dma;
131 struct {
132 struct sk_buff *skb;
133 DEFINE_DMA_UNMAP_ADDR(dma);
134 } *buf;
135 };
136
137 struct mwl8k_tx_queue {
138 /* hw transmits here */
139 int head;
140
141 /* sw appends here */
142 int tail;
143
144 unsigned int len;
145 struct mwl8k_tx_desc *txd;
146 dma_addr_t txd_dma;
147 struct sk_buff **skb;
148 };
149
150 enum {
151 AMPDU_NO_STREAM,
152 AMPDU_STREAM_NEW,
153 AMPDU_STREAM_IN_PROGRESS,
154 AMPDU_STREAM_ACTIVE,
155 };
156
157 struct mwl8k_ampdu_stream {
158 struct ieee80211_sta *sta;
159 u8 tid;
160 u8 state;
161 u8 idx;
162 u8 txq_idx; /* index of this stream in priv->txq */
163 };
164
165 struct mwl8k_priv {
166 struct ieee80211_hw *hw;
167 struct pci_dev *pdev;
168 int irq;
169
170 struct mwl8k_device_info *device_info;
171
172 void __iomem *sram;
173 void __iomem *regs;
174
175 /* firmware */
176 const struct firmware *fw_helper;
177 const struct firmware *fw_ucode;
178
179 /* hardware/firmware parameters */
180 bool ap_fw;
181 struct rxd_ops *rxd_ops;
182 struct ieee80211_supported_band band_24;
183 struct ieee80211_channel channels_24[14];
184 struct ieee80211_rate rates_24[14];
185 struct ieee80211_supported_band band_50;
186 struct ieee80211_channel channels_50[4];
187 struct ieee80211_rate rates_50[9];
188 u32 ap_macids_supported;
189 u32 sta_macids_supported;
190
191 /* Ampdu stream information */
192 u8 num_ampdu_queues;
193 spinlock_t stream_lock;
194 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
195 struct work_struct watchdog_ba_handle;
196
197 /* firmware access */
198 struct mutex fw_mutex;
199 struct task_struct *fw_mutex_owner;
200 int fw_mutex_depth;
201 struct completion *hostcmd_wait;
202
203 /* lock held over TX and TX reap */
204 spinlock_t tx_lock;
205
206 /* TX quiesce completion, protected by fw_mutex and tx_lock */
207 struct completion *tx_wait;
208
209 /* List of interfaces. */
210 u32 macids_used;
211 struct list_head vif_list;
212
213 /* power management status cookie from firmware */
214 u32 *cookie;
215 dma_addr_t cookie_dma;
216
217 u16 num_mcaddrs;
218 u8 hw_rev;
219 u32 fw_rev;
220
221 /*
222 * Running count of TX packets in flight, to avoid
223 * iterating over the transmit rings each time.
224 */
225 int pending_tx_pkts;
226
227 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
228 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
229 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
230
231 bool radio_on;
232 bool radio_short_preamble;
233 bool sniffer_enabled;
234 bool wmm_enabled;
235
236 /* XXX need to convert this to handle multiple interfaces */
237 bool capture_beacon;
238 u8 capture_bssid[ETH_ALEN];
239 struct sk_buff *beacon_skb;
240
241 /*
242 * This FJ worker has to be global as it is scheduled from the
243 * RX handler. At this point we don't know which interface it
244 * belongs to until the list of bssids waiting to complete join
245 * is checked.
246 */
247 struct work_struct finalize_join_worker;
248
249 /* Tasklet to perform TX reclaim. */
250 struct tasklet_struct poll_tx_task;
251
252 /* Tasklet to perform RX. */
253 struct tasklet_struct poll_rx_task;
254
255 /* Most recently reported noise in dBm */
256 s8 noise;
257
258 /*
259 * preserve the queue configurations so they can be restored if/when
260 * the firmware image is swapped.
261 */
262 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
263
264 /* async firmware loading state */
265 unsigned fw_state;
266 char *fw_pref;
267 char *fw_alt;
268 struct completion firmware_loading_complete;
269 };
270
271 #define MAX_WEP_KEY_LEN 13
272 #define NUM_WEP_KEYS 4
273
274 /* Per interface specific private data */
275 struct mwl8k_vif {
276 struct list_head list;
277 struct ieee80211_vif *vif;
278
279 /* Firmware macid for this vif. */
280 int macid;
281
282 /* Non AMPDU sequence number assigned by driver. */
283 u16 seqno;
284
285 /* Saved WEP keys */
286 struct {
287 u8 enabled;
288 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
289 } wep_key_conf[NUM_WEP_KEYS];
290
291 /* BSSID */
292 u8 bssid[ETH_ALEN];
293
294 /* A flag to indicate is HW crypto is enabled for this bssid */
295 bool is_hw_crypto_enabled;
296 };
297 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
298 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
299
300 struct tx_traffic_info {
301 u32 start_time;
302 u32 pkts;
303 };
304
305 #define MWL8K_MAX_TID 8
306 struct mwl8k_sta {
307 /* Index into station database. Returned by UPDATE_STADB. */
308 u8 peer_id;
309 u8 is_ampdu_allowed;
310 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
311 };
312 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
313
314 static const struct ieee80211_channel mwl8k_channels_24[] = {
315 { .center_freq = 2412, .hw_value = 1, },
316 { .center_freq = 2417, .hw_value = 2, },
317 { .center_freq = 2422, .hw_value = 3, },
318 { .center_freq = 2427, .hw_value = 4, },
319 { .center_freq = 2432, .hw_value = 5, },
320 { .center_freq = 2437, .hw_value = 6, },
321 { .center_freq = 2442, .hw_value = 7, },
322 { .center_freq = 2447, .hw_value = 8, },
323 { .center_freq = 2452, .hw_value = 9, },
324 { .center_freq = 2457, .hw_value = 10, },
325 { .center_freq = 2462, .hw_value = 11, },
326 { .center_freq = 2467, .hw_value = 12, },
327 { .center_freq = 2472, .hw_value = 13, },
328 { .center_freq = 2484, .hw_value = 14, },
329 };
330
331 static const struct ieee80211_rate mwl8k_rates_24[] = {
332 { .bitrate = 10, .hw_value = 2, },
333 { .bitrate = 20, .hw_value = 4, },
334 { .bitrate = 55, .hw_value = 11, },
335 { .bitrate = 110, .hw_value = 22, },
336 { .bitrate = 220, .hw_value = 44, },
337 { .bitrate = 60, .hw_value = 12, },
338 { .bitrate = 90, .hw_value = 18, },
339 { .bitrate = 120, .hw_value = 24, },
340 { .bitrate = 180, .hw_value = 36, },
341 { .bitrate = 240, .hw_value = 48, },
342 { .bitrate = 360, .hw_value = 72, },
343 { .bitrate = 480, .hw_value = 96, },
344 { .bitrate = 540, .hw_value = 108, },
345 { .bitrate = 720, .hw_value = 144, },
346 };
347
348 static const struct ieee80211_channel mwl8k_channels_50[] = {
349 { .center_freq = 5180, .hw_value = 36, },
350 { .center_freq = 5200, .hw_value = 40, },
351 { .center_freq = 5220, .hw_value = 44, },
352 { .center_freq = 5240, .hw_value = 48, },
353 };
354
355 static const struct ieee80211_rate mwl8k_rates_50[] = {
356 { .bitrate = 60, .hw_value = 12, },
357 { .bitrate = 90, .hw_value = 18, },
358 { .bitrate = 120, .hw_value = 24, },
359 { .bitrate = 180, .hw_value = 36, },
360 { .bitrate = 240, .hw_value = 48, },
361 { .bitrate = 360, .hw_value = 72, },
362 { .bitrate = 480, .hw_value = 96, },
363 { .bitrate = 540, .hw_value = 108, },
364 { .bitrate = 720, .hw_value = 144, },
365 };
366
367 /* Set or get info from Firmware */
368 #define MWL8K_CMD_GET 0x0000
369 #define MWL8K_CMD_SET 0x0001
370 #define MWL8K_CMD_SET_LIST 0x0002
371
372 /* Firmware command codes */
373 #define MWL8K_CMD_CODE_DNLD 0x0001
374 #define MWL8K_CMD_GET_HW_SPEC 0x0003
375 #define MWL8K_CMD_SET_HW_SPEC 0x0004
376 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
377 #define MWL8K_CMD_GET_STAT 0x0014
378 #define MWL8K_CMD_RADIO_CONTROL 0x001c
379 #define MWL8K_CMD_RF_TX_POWER 0x001e
380 #define MWL8K_CMD_TX_POWER 0x001f
381 #define MWL8K_CMD_RF_ANTENNA 0x0020
382 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
383 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
384 #define MWL8K_CMD_SET_POST_SCAN 0x0108
385 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
386 #define MWL8K_CMD_SET_AID 0x010d
387 #define MWL8K_CMD_SET_RATE 0x0110
388 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
389 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
390 #define MWL8K_CMD_SET_SLOT 0x0114
391 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
392 #define MWL8K_CMD_SET_WMM_MODE 0x0123
393 #define MWL8K_CMD_MIMO_CONFIG 0x0125
394 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
395 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
396 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
397 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
398 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
399 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
400 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
401 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
402 #define MWL8K_CMD_UPDATE_STADB 0x1123
403 #define MWL8K_CMD_BASTREAM 0x1125
404
405 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
406 {
407 u16 command = le16_to_cpu(cmd);
408
409 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
410 snprintf(buf, bufsize, "%s", #x);\
411 return buf;\
412 } while (0)
413 switch (command & ~0x8000) {
414 MWL8K_CMDNAME(CODE_DNLD);
415 MWL8K_CMDNAME(GET_HW_SPEC);
416 MWL8K_CMDNAME(SET_HW_SPEC);
417 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
418 MWL8K_CMDNAME(GET_STAT);
419 MWL8K_CMDNAME(RADIO_CONTROL);
420 MWL8K_CMDNAME(RF_TX_POWER);
421 MWL8K_CMDNAME(TX_POWER);
422 MWL8K_CMDNAME(RF_ANTENNA);
423 MWL8K_CMDNAME(SET_BEACON);
424 MWL8K_CMDNAME(SET_PRE_SCAN);
425 MWL8K_CMDNAME(SET_POST_SCAN);
426 MWL8K_CMDNAME(SET_RF_CHANNEL);
427 MWL8K_CMDNAME(SET_AID);
428 MWL8K_CMDNAME(SET_RATE);
429 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
430 MWL8K_CMDNAME(RTS_THRESHOLD);
431 MWL8K_CMDNAME(SET_SLOT);
432 MWL8K_CMDNAME(SET_EDCA_PARAMS);
433 MWL8K_CMDNAME(SET_WMM_MODE);
434 MWL8K_CMDNAME(MIMO_CONFIG);
435 MWL8K_CMDNAME(USE_FIXED_RATE);
436 MWL8K_CMDNAME(ENABLE_SNIFFER);
437 MWL8K_CMDNAME(SET_MAC_ADDR);
438 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
439 MWL8K_CMDNAME(BSS_START);
440 MWL8K_CMDNAME(SET_NEW_STN);
441 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
442 MWL8K_CMDNAME(UPDATE_STADB);
443 MWL8K_CMDNAME(BASTREAM);
444 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
445 default:
446 snprintf(buf, bufsize, "0x%x", cmd);
447 }
448 #undef MWL8K_CMDNAME
449
450 return buf;
451 }
452
453 /* Hardware and firmware reset */
454 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
455 {
456 iowrite32(MWL8K_H2A_INT_RESET,
457 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
458 iowrite32(MWL8K_H2A_INT_RESET,
459 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
460 msleep(20);
461 }
462
463 /* Release fw image */
464 static void mwl8k_release_fw(const struct firmware **fw)
465 {
466 if (*fw == NULL)
467 return;
468 release_firmware(*fw);
469 *fw = NULL;
470 }
471
472 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
473 {
474 mwl8k_release_fw(&priv->fw_ucode);
475 mwl8k_release_fw(&priv->fw_helper);
476 }
477
478 /* states for asynchronous f/w loading */
479 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
480 enum {
481 FW_STATE_INIT = 0,
482 FW_STATE_LOADING_PREF,
483 FW_STATE_LOADING_ALT,
484 FW_STATE_ERROR,
485 };
486
487 /* Request fw image */
488 static int mwl8k_request_fw(struct mwl8k_priv *priv,
489 const char *fname, const struct firmware **fw,
490 bool nowait)
491 {
492 /* release current image */
493 if (*fw != NULL)
494 mwl8k_release_fw(fw);
495
496 if (nowait)
497 return request_firmware_nowait(THIS_MODULE, 1, fname,
498 &priv->pdev->dev, GFP_KERNEL,
499 priv, mwl8k_fw_state_machine);
500 else
501 return request_firmware(fw, fname, &priv->pdev->dev);
502 }
503
504 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
505 bool nowait)
506 {
507 struct mwl8k_device_info *di = priv->device_info;
508 int rc;
509
510 if (di->helper_image != NULL) {
511 if (nowait)
512 rc = mwl8k_request_fw(priv, di->helper_image,
513 &priv->fw_helper, true);
514 else
515 rc = mwl8k_request_fw(priv, di->helper_image,
516 &priv->fw_helper, false);
517 if (rc)
518 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
519 pci_name(priv->pdev), di->helper_image);
520
521 if (rc || nowait)
522 return rc;
523 }
524
525 if (nowait) {
526 /*
527 * if we get here, no helper image is needed. Skip the
528 * FW_STATE_INIT state.
529 */
530 priv->fw_state = FW_STATE_LOADING_PREF;
531 rc = mwl8k_request_fw(priv, fw_image,
532 &priv->fw_ucode,
533 true);
534 } else
535 rc = mwl8k_request_fw(priv, fw_image,
536 &priv->fw_ucode, false);
537 if (rc) {
538 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
539 pci_name(priv->pdev), fw_image);
540 mwl8k_release_fw(&priv->fw_helper);
541 return rc;
542 }
543
544 return 0;
545 }
546
547 struct mwl8k_cmd_pkt {
548 __le16 code;
549 __le16 length;
550 __u8 seq_num;
551 __u8 macid;
552 __le16 result;
553 char payload[0];
554 } __packed;
555
556 /*
557 * Firmware loading.
558 */
559 static int
560 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
561 {
562 void __iomem *regs = priv->regs;
563 dma_addr_t dma_addr;
564 int loops;
565
566 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
567 if (pci_dma_mapping_error(priv->pdev, dma_addr))
568 return -ENOMEM;
569
570 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
571 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
572 iowrite32(MWL8K_H2A_INT_DOORBELL,
573 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
574 iowrite32(MWL8K_H2A_INT_DUMMY,
575 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
576
577 loops = 1000;
578 do {
579 u32 int_code;
580
581 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
582 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
583 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
584 break;
585 }
586
587 cond_resched();
588 udelay(1);
589 } while (--loops);
590
591 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
592
593 return loops ? 0 : -ETIMEDOUT;
594 }
595
596 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
597 const u8 *data, size_t length)
598 {
599 struct mwl8k_cmd_pkt *cmd;
600 int done;
601 int rc = 0;
602
603 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
604 if (cmd == NULL)
605 return -ENOMEM;
606
607 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
608 cmd->seq_num = 0;
609 cmd->macid = 0;
610 cmd->result = 0;
611
612 done = 0;
613 while (length) {
614 int block_size = length > 256 ? 256 : length;
615
616 memcpy(cmd->payload, data + done, block_size);
617 cmd->length = cpu_to_le16(block_size);
618
619 rc = mwl8k_send_fw_load_cmd(priv, cmd,
620 sizeof(*cmd) + block_size);
621 if (rc)
622 break;
623
624 done += block_size;
625 length -= block_size;
626 }
627
628 if (!rc) {
629 cmd->length = 0;
630 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
631 }
632
633 kfree(cmd);
634
635 return rc;
636 }
637
638 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
639 const u8 *data, size_t length)
640 {
641 unsigned char *buffer;
642 int may_continue, rc = 0;
643 u32 done, prev_block_size;
644
645 buffer = kmalloc(1024, GFP_KERNEL);
646 if (buffer == NULL)
647 return -ENOMEM;
648
649 done = 0;
650 prev_block_size = 0;
651 may_continue = 1000;
652 while (may_continue > 0) {
653 u32 block_size;
654
655 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
656 if (block_size & 1) {
657 block_size &= ~1;
658 may_continue--;
659 } else {
660 done += prev_block_size;
661 length -= prev_block_size;
662 }
663
664 if (block_size > 1024 || block_size > length) {
665 rc = -EOVERFLOW;
666 break;
667 }
668
669 if (length == 0) {
670 rc = 0;
671 break;
672 }
673
674 if (block_size == 0) {
675 rc = -EPROTO;
676 may_continue--;
677 udelay(1);
678 continue;
679 }
680
681 prev_block_size = block_size;
682 memcpy(buffer, data + done, block_size);
683
684 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
685 if (rc)
686 break;
687 }
688
689 if (!rc && length != 0)
690 rc = -EREMOTEIO;
691
692 kfree(buffer);
693
694 return rc;
695 }
696
697 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
698 {
699 struct mwl8k_priv *priv = hw->priv;
700 const struct firmware *fw = priv->fw_ucode;
701 int rc;
702 int loops;
703
704 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
705 const struct firmware *helper = priv->fw_helper;
706
707 if (helper == NULL) {
708 printk(KERN_ERR "%s: helper image needed but none "
709 "given\n", pci_name(priv->pdev));
710 return -EINVAL;
711 }
712
713 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
714 if (rc) {
715 printk(KERN_ERR "%s: unable to load firmware "
716 "helper image\n", pci_name(priv->pdev));
717 return rc;
718 }
719 msleep(20);
720
721 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
722 } else {
723 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
724 }
725
726 if (rc) {
727 printk(KERN_ERR "%s: unable to load firmware image\n",
728 pci_name(priv->pdev));
729 return rc;
730 }
731
732 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
733
734 loops = 500000;
735 do {
736 u32 ready_code;
737
738 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
739 if (ready_code == MWL8K_FWAP_READY) {
740 priv->ap_fw = 1;
741 break;
742 } else if (ready_code == MWL8K_FWSTA_READY) {
743 priv->ap_fw = 0;
744 break;
745 }
746
747 cond_resched();
748 udelay(1);
749 } while (--loops);
750
751 return loops ? 0 : -ETIMEDOUT;
752 }
753
754
755 /* DMA header used by firmware and hardware. */
756 struct mwl8k_dma_data {
757 __le16 fwlen;
758 struct ieee80211_hdr wh;
759 char data[0];
760 } __packed;
761
762 /* Routines to add/remove DMA header from skb. */
763 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
764 {
765 struct mwl8k_dma_data *tr;
766 int hdrlen;
767
768 tr = (struct mwl8k_dma_data *)skb->data;
769 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
770
771 if (hdrlen != sizeof(tr->wh)) {
772 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
773 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
774 *((__le16 *)(tr->data - 2)) = qos;
775 } else {
776 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
777 }
778 }
779
780 if (hdrlen != sizeof(*tr))
781 skb_pull(skb, sizeof(*tr) - hdrlen);
782 }
783
784 #define REDUCED_TX_HEADROOM 8
785
786 static void
787 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, int tail_pad)
788 {
789 struct ieee80211_hdr *wh;
790 int hdrlen;
791 int reqd_hdrlen;
792 struct mwl8k_dma_data *tr;
793
794 /*
795 * Add a firmware DMA header; the firmware requires that we
796 * present a 2-byte payload length followed by a 4-address
797 * header (without QoS field), followed (optionally) by any
798 * WEP/ExtIV header (but only filled in for CCMP).
799 */
800 wh = (struct ieee80211_hdr *)skb->data;
801
802 hdrlen = ieee80211_hdrlen(wh->frame_control);
803
804 /*
805 * Check if skb_resize is required because of
806 * tx_headroom adjustment.
807 */
808 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
809 + REDUCED_TX_HEADROOM))) {
810 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
811
812 wiphy_err(priv->hw->wiphy,
813 "Failed to reallocate TX buffer\n");
814 return;
815 }
816 skb->truesize += REDUCED_TX_HEADROOM;
817 }
818
819 reqd_hdrlen = sizeof(*tr);
820
821 if (hdrlen != reqd_hdrlen)
822 skb_push(skb, reqd_hdrlen - hdrlen);
823
824 if (ieee80211_is_data_qos(wh->frame_control))
825 hdrlen -= IEEE80211_QOS_CTL_LEN;
826
827 tr = (struct mwl8k_dma_data *)skb->data;
828 if (wh != &tr->wh)
829 memmove(&tr->wh, wh, hdrlen);
830 if (hdrlen != sizeof(tr->wh))
831 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
832
833 /*
834 * Firmware length is the length of the fully formed "802.11
835 * payload". That is, everything except for the 802.11 header.
836 * This includes all crypto material including the MIC.
837 */
838 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
839 }
840
841 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
842 struct sk_buff *skb)
843 {
844 struct ieee80211_hdr *wh;
845 struct ieee80211_tx_info *tx_info;
846 struct ieee80211_key_conf *key_conf;
847 int data_pad;
848
849 wh = (struct ieee80211_hdr *)skb->data;
850
851 tx_info = IEEE80211_SKB_CB(skb);
852
853 key_conf = NULL;
854 if (ieee80211_is_data(wh->frame_control))
855 key_conf = tx_info->control.hw_key;
856
857 /*
858 * Make sure the packet header is in the DMA header format (4-address
859 * without QoS), the necessary crypto padding between the header and the
860 * payload has already been provided by mac80211, but it doesn't add
861 * tail padding when HW crypto is enabled.
862 *
863 * We have the following trailer padding requirements:
864 * - WEP: 4 trailer bytes (ICV)
865 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
866 * - CCMP: 8 trailer bytes (MIC)
867 */
868 data_pad = 0;
869 if (key_conf != NULL) {
870 switch (key_conf->cipher) {
871 case WLAN_CIPHER_SUITE_WEP40:
872 case WLAN_CIPHER_SUITE_WEP104:
873 data_pad = 4;
874 break;
875 case WLAN_CIPHER_SUITE_TKIP:
876 data_pad = 12;
877 break;
878 case WLAN_CIPHER_SUITE_CCMP:
879 data_pad = 8;
880 break;
881 }
882 }
883 mwl8k_add_dma_header(priv, skb, data_pad);
884 }
885
886 /*
887 * Packet reception for 88w8366 AP firmware.
888 */
889 struct mwl8k_rxd_8366_ap {
890 __le16 pkt_len;
891 __u8 sq2;
892 __u8 rate;
893 __le32 pkt_phys_addr;
894 __le32 next_rxd_phys_addr;
895 __le16 qos_control;
896 __le16 htsig2;
897 __le32 hw_rssi_info;
898 __le32 hw_noise_floor_info;
899 __u8 noise_floor;
900 __u8 pad0[3];
901 __u8 rssi;
902 __u8 rx_status;
903 __u8 channel;
904 __u8 rx_ctrl;
905 } __packed;
906
907 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
908 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
909 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
910
911 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
912
913 /* 8366 AP rx_status bits */
914 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
915 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
916 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
917 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
918 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
919
920 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
921 {
922 struct mwl8k_rxd_8366_ap *rxd = _rxd;
923
924 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
925 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
926 }
927
928 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
929 {
930 struct mwl8k_rxd_8366_ap *rxd = _rxd;
931
932 rxd->pkt_len = cpu_to_le16(len);
933 rxd->pkt_phys_addr = cpu_to_le32(addr);
934 wmb();
935 rxd->rx_ctrl = 0;
936 }
937
938 static int
939 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
940 __le16 *qos, s8 *noise)
941 {
942 struct mwl8k_rxd_8366_ap *rxd = _rxd;
943
944 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
945 return -1;
946 rmb();
947
948 memset(status, 0, sizeof(*status));
949
950 status->signal = -rxd->rssi;
951 *noise = -rxd->noise_floor;
952
953 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
954 status->flag |= RX_FLAG_HT;
955 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
956 status->flag |= RX_FLAG_40MHZ;
957 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
958 } else {
959 int i;
960
961 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
962 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
963 status->rate_idx = i;
964 break;
965 }
966 }
967 }
968
969 if (rxd->channel > 14) {
970 status->band = IEEE80211_BAND_5GHZ;
971 if (!(status->flag & RX_FLAG_HT))
972 status->rate_idx -= 5;
973 } else {
974 status->band = IEEE80211_BAND_2GHZ;
975 }
976 status->freq = ieee80211_channel_to_frequency(rxd->channel,
977 status->band);
978
979 *qos = rxd->qos_control;
980
981 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
982 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
983 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
984 status->flag |= RX_FLAG_MMIC_ERROR;
985
986 return le16_to_cpu(rxd->pkt_len);
987 }
988
989 static struct rxd_ops rxd_8366_ap_ops = {
990 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
991 .rxd_init = mwl8k_rxd_8366_ap_init,
992 .rxd_refill = mwl8k_rxd_8366_ap_refill,
993 .rxd_process = mwl8k_rxd_8366_ap_process,
994 };
995
996 /*
997 * Packet reception for STA firmware.
998 */
999 struct mwl8k_rxd_sta {
1000 __le16 pkt_len;
1001 __u8 link_quality;
1002 __u8 noise_level;
1003 __le32 pkt_phys_addr;
1004 __le32 next_rxd_phys_addr;
1005 __le16 qos_control;
1006 __le16 rate_info;
1007 __le32 pad0[4];
1008 __u8 rssi;
1009 __u8 channel;
1010 __le16 pad1;
1011 __u8 rx_ctrl;
1012 __u8 rx_status;
1013 __u8 pad2[2];
1014 } __packed;
1015
1016 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1017 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1018 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1019 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1020 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1021 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1022
1023 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1024 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1025 /* ICV=0 or MIC=1 */
1026 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1027 /* Key is uploaded only in failure case */
1028 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1029
1030 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1031 {
1032 struct mwl8k_rxd_sta *rxd = _rxd;
1033
1034 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1035 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1036 }
1037
1038 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1039 {
1040 struct mwl8k_rxd_sta *rxd = _rxd;
1041
1042 rxd->pkt_len = cpu_to_le16(len);
1043 rxd->pkt_phys_addr = cpu_to_le32(addr);
1044 wmb();
1045 rxd->rx_ctrl = 0;
1046 }
1047
1048 static int
1049 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1050 __le16 *qos, s8 *noise)
1051 {
1052 struct mwl8k_rxd_sta *rxd = _rxd;
1053 u16 rate_info;
1054
1055 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1056 return -1;
1057 rmb();
1058
1059 rate_info = le16_to_cpu(rxd->rate_info);
1060
1061 memset(status, 0, sizeof(*status));
1062
1063 status->signal = -rxd->rssi;
1064 *noise = -rxd->noise_level;
1065 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1066 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1067
1068 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1069 status->flag |= RX_FLAG_SHORTPRE;
1070 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1071 status->flag |= RX_FLAG_40MHZ;
1072 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1073 status->flag |= RX_FLAG_SHORT_GI;
1074 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1075 status->flag |= RX_FLAG_HT;
1076
1077 if (rxd->channel > 14) {
1078 status->band = IEEE80211_BAND_5GHZ;
1079 if (!(status->flag & RX_FLAG_HT))
1080 status->rate_idx -= 5;
1081 } else {
1082 status->band = IEEE80211_BAND_2GHZ;
1083 }
1084 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1085 status->band);
1086
1087 *qos = rxd->qos_control;
1088 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1089 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1090 status->flag |= RX_FLAG_MMIC_ERROR;
1091
1092 return le16_to_cpu(rxd->pkt_len);
1093 }
1094
1095 static struct rxd_ops rxd_sta_ops = {
1096 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1097 .rxd_init = mwl8k_rxd_sta_init,
1098 .rxd_refill = mwl8k_rxd_sta_refill,
1099 .rxd_process = mwl8k_rxd_sta_process,
1100 };
1101
1102
1103 #define MWL8K_RX_DESCS 256
1104 #define MWL8K_RX_MAXSZ 3800
1105
1106 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1107 {
1108 struct mwl8k_priv *priv = hw->priv;
1109 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1110 int size;
1111 int i;
1112
1113 rxq->rxd_count = 0;
1114 rxq->head = 0;
1115 rxq->tail = 0;
1116
1117 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1118
1119 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1120 if (rxq->rxd == NULL) {
1121 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1122 return -ENOMEM;
1123 }
1124 memset(rxq->rxd, 0, size);
1125
1126 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1127 if (rxq->buf == NULL) {
1128 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1129 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1130 return -ENOMEM;
1131 }
1132
1133 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1134 int desc_size;
1135 void *rxd;
1136 int nexti;
1137 dma_addr_t next_dma_addr;
1138
1139 desc_size = priv->rxd_ops->rxd_size;
1140 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1141
1142 nexti = i + 1;
1143 if (nexti == MWL8K_RX_DESCS)
1144 nexti = 0;
1145 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1146
1147 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1148 }
1149
1150 return 0;
1151 }
1152
1153 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1154 {
1155 struct mwl8k_priv *priv = hw->priv;
1156 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1157 int refilled;
1158
1159 refilled = 0;
1160 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1161 struct sk_buff *skb;
1162 dma_addr_t addr;
1163 int rx;
1164 void *rxd;
1165
1166 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1167 if (skb == NULL)
1168 break;
1169
1170 addr = pci_map_single(priv->pdev, skb->data,
1171 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1172
1173 rxq->rxd_count++;
1174 rx = rxq->tail++;
1175 if (rxq->tail == MWL8K_RX_DESCS)
1176 rxq->tail = 0;
1177 rxq->buf[rx].skb = skb;
1178 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1179
1180 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1181 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1182
1183 refilled++;
1184 }
1185
1186 return refilled;
1187 }
1188
1189 /* Must be called only when the card's reception is completely halted */
1190 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1191 {
1192 struct mwl8k_priv *priv = hw->priv;
1193 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1194 int i;
1195
1196 if (rxq->rxd == NULL)
1197 return;
1198
1199 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1200 if (rxq->buf[i].skb != NULL) {
1201 pci_unmap_single(priv->pdev,
1202 dma_unmap_addr(&rxq->buf[i], dma),
1203 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1204 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1205
1206 kfree_skb(rxq->buf[i].skb);
1207 rxq->buf[i].skb = NULL;
1208 }
1209 }
1210
1211 kfree(rxq->buf);
1212 rxq->buf = NULL;
1213
1214 pci_free_consistent(priv->pdev,
1215 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1216 rxq->rxd, rxq->rxd_dma);
1217 rxq->rxd = NULL;
1218 }
1219
1220
1221 /*
1222 * Scan a list of BSSIDs to process for finalize join.
1223 * Allows for extension to process multiple BSSIDs.
1224 */
1225 static inline int
1226 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1227 {
1228 return priv->capture_beacon &&
1229 ieee80211_is_beacon(wh->frame_control) &&
1230 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1231 }
1232
1233 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1234 struct sk_buff *skb)
1235 {
1236 struct mwl8k_priv *priv = hw->priv;
1237
1238 priv->capture_beacon = false;
1239 memset(priv->capture_bssid, 0, ETH_ALEN);
1240
1241 /*
1242 * Use GFP_ATOMIC as rxq_process is called from
1243 * the primary interrupt handler, memory allocation call
1244 * must not sleep.
1245 */
1246 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1247 if (priv->beacon_skb != NULL)
1248 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1249 }
1250
1251 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1252 u8 *bssid)
1253 {
1254 struct mwl8k_vif *mwl8k_vif;
1255
1256 list_for_each_entry(mwl8k_vif,
1257 vif_list, list) {
1258 if (memcmp(bssid, mwl8k_vif->bssid,
1259 ETH_ALEN) == 0)
1260 return mwl8k_vif;
1261 }
1262
1263 return NULL;
1264 }
1265
1266 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1267 {
1268 struct mwl8k_priv *priv = hw->priv;
1269 struct mwl8k_vif *mwl8k_vif = NULL;
1270 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1271 int processed;
1272
1273 processed = 0;
1274 while (rxq->rxd_count && limit--) {
1275 struct sk_buff *skb;
1276 void *rxd;
1277 int pkt_len;
1278 struct ieee80211_rx_status status;
1279 struct ieee80211_hdr *wh;
1280 __le16 qos;
1281
1282 skb = rxq->buf[rxq->head].skb;
1283 if (skb == NULL)
1284 break;
1285
1286 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1287
1288 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1289 &priv->noise);
1290 if (pkt_len < 0)
1291 break;
1292
1293 rxq->buf[rxq->head].skb = NULL;
1294
1295 pci_unmap_single(priv->pdev,
1296 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1297 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1298 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1299
1300 rxq->head++;
1301 if (rxq->head == MWL8K_RX_DESCS)
1302 rxq->head = 0;
1303
1304 rxq->rxd_count--;
1305
1306 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1307
1308 /*
1309 * Check for a pending join operation. Save a
1310 * copy of the beacon and schedule a tasklet to
1311 * send a FINALIZE_JOIN command to the firmware.
1312 */
1313 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1314 mwl8k_save_beacon(hw, skb);
1315
1316 if (ieee80211_has_protected(wh->frame_control)) {
1317
1318 /* Check if hw crypto has been enabled for
1319 * this bss. If yes, set the status flags
1320 * accordingly
1321 */
1322 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1323 wh->addr1);
1324
1325 if (mwl8k_vif != NULL &&
1326 mwl8k_vif->is_hw_crypto_enabled == true) {
1327 /*
1328 * When MMIC ERROR is encountered
1329 * by the firmware, payload is
1330 * dropped and only 32 bytes of
1331 * mwl8k Firmware header is sent
1332 * to the host.
1333 *
1334 * We need to add four bytes of
1335 * key information. In it
1336 * MAC80211 expects keyidx set to
1337 * 0 for triggering Counter
1338 * Measure of MMIC failure.
1339 */
1340 if (status.flag & RX_FLAG_MMIC_ERROR) {
1341 struct mwl8k_dma_data *tr;
1342 tr = (struct mwl8k_dma_data *)skb->data;
1343 memset((void *)&(tr->data), 0, 4);
1344 pkt_len += 4;
1345 }
1346
1347 if (!ieee80211_is_auth(wh->frame_control))
1348 status.flag |= RX_FLAG_IV_STRIPPED |
1349 RX_FLAG_DECRYPTED |
1350 RX_FLAG_MMIC_STRIPPED;
1351 }
1352 }
1353
1354 skb_put(skb, pkt_len);
1355 mwl8k_remove_dma_header(skb, qos);
1356 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1357 ieee80211_rx_irqsafe(hw, skb);
1358
1359 processed++;
1360 }
1361
1362 return processed;
1363 }
1364
1365
1366 /*
1367 * Packet transmission.
1368 */
1369
1370 #define MWL8K_TXD_STATUS_OK 0x00000001
1371 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1372 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1373 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1374 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1375
1376 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1377 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1378 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1379 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1380 #define MWL8K_QOS_EOSP 0x0010
1381
1382 struct mwl8k_tx_desc {
1383 __le32 status;
1384 __u8 data_rate;
1385 __u8 tx_priority;
1386 __le16 qos_control;
1387 __le32 pkt_phys_addr;
1388 __le16 pkt_len;
1389 __u8 dest_MAC_addr[ETH_ALEN];
1390 __le32 next_txd_phys_addr;
1391 __le32 timestamp;
1392 __le16 rate_info;
1393 __u8 peer_id;
1394 __u8 tx_frag_cnt;
1395 } __packed;
1396
1397 #define MWL8K_TX_DESCS 128
1398
1399 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1400 {
1401 struct mwl8k_priv *priv = hw->priv;
1402 struct mwl8k_tx_queue *txq = priv->txq + index;
1403 int size;
1404 int i;
1405
1406 txq->len = 0;
1407 txq->head = 0;
1408 txq->tail = 0;
1409
1410 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1411
1412 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1413 if (txq->txd == NULL) {
1414 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1415 return -ENOMEM;
1416 }
1417 memset(txq->txd, 0, size);
1418
1419 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1420 if (txq->skb == NULL) {
1421 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1422 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1423 return -ENOMEM;
1424 }
1425
1426 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1427 struct mwl8k_tx_desc *tx_desc;
1428 int nexti;
1429
1430 tx_desc = txq->txd + i;
1431 nexti = (i + 1) % MWL8K_TX_DESCS;
1432
1433 tx_desc->status = 0;
1434 tx_desc->next_txd_phys_addr =
1435 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1436 }
1437
1438 return 0;
1439 }
1440
1441 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1442 {
1443 iowrite32(MWL8K_H2A_INT_PPA_READY,
1444 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1445 iowrite32(MWL8K_H2A_INT_DUMMY,
1446 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1447 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1448 }
1449
1450 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1451 {
1452 struct mwl8k_priv *priv = hw->priv;
1453 int i;
1454
1455 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1456 struct mwl8k_tx_queue *txq = priv->txq + i;
1457 int fw_owned = 0;
1458 int drv_owned = 0;
1459 int unused = 0;
1460 int desc;
1461
1462 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1463 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1464 u32 status;
1465
1466 status = le32_to_cpu(tx_desc->status);
1467 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1468 fw_owned++;
1469 else
1470 drv_owned++;
1471
1472 if (tx_desc->pkt_len == 0)
1473 unused++;
1474 }
1475
1476 wiphy_err(hw->wiphy,
1477 "txq[%d] len=%d head=%d tail=%d "
1478 "fw_owned=%d drv_owned=%d unused=%d\n",
1479 i,
1480 txq->len, txq->head, txq->tail,
1481 fw_owned, drv_owned, unused);
1482 }
1483 }
1484
1485 /*
1486 * Must be called with priv->fw_mutex held and tx queues stopped.
1487 */
1488 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1489
1490 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1491 {
1492 struct mwl8k_priv *priv = hw->priv;
1493 DECLARE_COMPLETION_ONSTACK(tx_wait);
1494 int retry;
1495 int rc;
1496
1497 might_sleep();
1498
1499 /*
1500 * The TX queues are stopped at this point, so this test
1501 * doesn't need to take ->tx_lock.
1502 */
1503 if (!priv->pending_tx_pkts)
1504 return 0;
1505
1506 retry = 0;
1507 rc = 0;
1508
1509 spin_lock_bh(&priv->tx_lock);
1510 priv->tx_wait = &tx_wait;
1511 while (!rc) {
1512 int oldcount;
1513 unsigned long timeout;
1514
1515 oldcount = priv->pending_tx_pkts;
1516
1517 spin_unlock_bh(&priv->tx_lock);
1518 timeout = wait_for_completion_timeout(&tx_wait,
1519 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1520 spin_lock_bh(&priv->tx_lock);
1521
1522 if (timeout) {
1523 WARN_ON(priv->pending_tx_pkts);
1524 if (retry)
1525 wiphy_notice(hw->wiphy, "tx rings drained\n");
1526 break;
1527 }
1528
1529 if (priv->pending_tx_pkts < oldcount) {
1530 wiphy_notice(hw->wiphy,
1531 "waiting for tx rings to drain (%d -> %d pkts)\n",
1532 oldcount, priv->pending_tx_pkts);
1533 retry = 1;
1534 continue;
1535 }
1536
1537 priv->tx_wait = NULL;
1538
1539 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1540 MWL8K_TX_WAIT_TIMEOUT_MS);
1541 mwl8k_dump_tx_rings(hw);
1542
1543 rc = -ETIMEDOUT;
1544 }
1545 spin_unlock_bh(&priv->tx_lock);
1546
1547 return rc;
1548 }
1549
1550 #define MWL8K_TXD_SUCCESS(status) \
1551 ((status) & (MWL8K_TXD_STATUS_OK | \
1552 MWL8K_TXD_STATUS_OK_RETRY | \
1553 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1554
1555 static int mwl8k_tid_queue_mapping(u8 tid)
1556 {
1557 BUG_ON(tid > 7);
1558
1559 switch (tid) {
1560 case 0:
1561 case 3:
1562 return IEEE80211_AC_BE;
1563 break;
1564 case 1:
1565 case 2:
1566 return IEEE80211_AC_BK;
1567 break;
1568 case 4:
1569 case 5:
1570 return IEEE80211_AC_VI;
1571 break;
1572 case 6:
1573 case 7:
1574 return IEEE80211_AC_VO;
1575 break;
1576 default:
1577 return -1;
1578 break;
1579 }
1580 }
1581
1582 /* The firmware will fill in the rate information
1583 * for each packet that gets queued in the hardware
1584 * and these macros will interpret that info.
1585 */
1586
1587 #define RI_FORMAT(a) (a & 0x0001)
1588 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1589
1590 static int
1591 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1592 {
1593 struct mwl8k_priv *priv = hw->priv;
1594 struct mwl8k_tx_queue *txq = priv->txq + index;
1595 int processed;
1596
1597 processed = 0;
1598 while (txq->len > 0 && limit--) {
1599 int tx;
1600 struct mwl8k_tx_desc *tx_desc;
1601 unsigned long addr;
1602 int size;
1603 struct sk_buff *skb;
1604 struct ieee80211_tx_info *info;
1605 u32 status;
1606 struct ieee80211_sta *sta;
1607 struct mwl8k_sta *sta_info = NULL;
1608 u16 rate_info;
1609 struct ieee80211_hdr *wh;
1610
1611 tx = txq->head;
1612 tx_desc = txq->txd + tx;
1613
1614 status = le32_to_cpu(tx_desc->status);
1615
1616 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1617 if (!force)
1618 break;
1619 tx_desc->status &=
1620 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1621 }
1622
1623 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1624 BUG_ON(txq->len == 0);
1625 txq->len--;
1626 priv->pending_tx_pkts--;
1627
1628 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1629 size = le16_to_cpu(tx_desc->pkt_len);
1630 skb = txq->skb[tx];
1631 txq->skb[tx] = NULL;
1632
1633 BUG_ON(skb == NULL);
1634 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1635
1636 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1637
1638 wh = (struct ieee80211_hdr *) skb->data;
1639
1640 /* Mark descriptor as unused */
1641 tx_desc->pkt_phys_addr = 0;
1642 tx_desc->pkt_len = 0;
1643
1644 info = IEEE80211_SKB_CB(skb);
1645 if (ieee80211_is_data(wh->frame_control)) {
1646 sta = info->control.sta;
1647 if (sta) {
1648 sta_info = MWL8K_STA(sta);
1649 BUG_ON(sta_info == NULL);
1650 rate_info = le16_to_cpu(tx_desc->rate_info);
1651 /* If rate is < 6.5 Mpbs for an ht station
1652 * do not form an ampdu. If the station is a
1653 * legacy station (format = 0), do not form an
1654 * ampdu
1655 */
1656 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1657 RI_FORMAT(rate_info) == 0) {
1658 sta_info->is_ampdu_allowed = false;
1659 } else {
1660 sta_info->is_ampdu_allowed = true;
1661 }
1662 }
1663 }
1664
1665 ieee80211_tx_info_clear_status(info);
1666
1667 /* Rate control is happening in the firmware.
1668 * Ensure no tx rate is being reported.
1669 */
1670 info->status.rates[0].idx = -1;
1671 info->status.rates[0].count = 1;
1672
1673 if (MWL8K_TXD_SUCCESS(status))
1674 info->flags |= IEEE80211_TX_STAT_ACK;
1675
1676 ieee80211_tx_status_irqsafe(hw, skb);
1677
1678 processed++;
1679 }
1680
1681 return processed;
1682 }
1683
1684 /* must be called only when the card's transmit is completely halted */
1685 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1686 {
1687 struct mwl8k_priv *priv = hw->priv;
1688 struct mwl8k_tx_queue *txq = priv->txq + index;
1689
1690 if (txq->txd == NULL)
1691 return;
1692
1693 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1694
1695 kfree(txq->skb);
1696 txq->skb = NULL;
1697
1698 pci_free_consistent(priv->pdev,
1699 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1700 txq->txd, txq->txd_dma);
1701 txq->txd = NULL;
1702 }
1703
1704 /* caller must hold priv->stream_lock when calling the stream functions */
1705 static struct mwl8k_ampdu_stream *
1706 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1707 {
1708 struct mwl8k_ampdu_stream *stream;
1709 struct mwl8k_priv *priv = hw->priv;
1710 int i;
1711
1712 for (i = 0; i < priv->num_ampdu_queues; i++) {
1713 stream = &priv->ampdu[i];
1714 if (stream->state == AMPDU_NO_STREAM) {
1715 stream->sta = sta;
1716 stream->state = AMPDU_STREAM_NEW;
1717 stream->tid = tid;
1718 stream->idx = i;
1719 stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1720 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1721 sta->addr, tid);
1722 return stream;
1723 }
1724 }
1725 return NULL;
1726 }
1727
1728 static int
1729 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1730 {
1731 int ret;
1732
1733 /* if the stream has already been started, don't start it again */
1734 if (stream->state != AMPDU_STREAM_NEW)
1735 return 0;
1736 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1737 if (ret)
1738 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1739 "%d\n", stream->sta->addr, stream->tid, ret);
1740 else
1741 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1742 stream->sta->addr, stream->tid);
1743 return ret;
1744 }
1745
1746 static void
1747 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1748 {
1749 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1750 stream->tid);
1751 memset(stream, 0, sizeof(*stream));
1752 }
1753
1754 static struct mwl8k_ampdu_stream *
1755 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1756 {
1757 struct mwl8k_priv *priv = hw->priv;
1758 int i;
1759
1760 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1761 struct mwl8k_ampdu_stream *stream;
1762 stream = &priv->ampdu[i];
1763 if (stream->state == AMPDU_NO_STREAM)
1764 continue;
1765 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1766 stream->tid == tid)
1767 return stream;
1768 }
1769 return NULL;
1770 }
1771
1772 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1773 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1774 {
1775 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1776 struct tx_traffic_info *tx_stats;
1777
1778 BUG_ON(tid >= MWL8K_MAX_TID);
1779 tx_stats = &sta_info->tx_stats[tid];
1780
1781 return sta_info->is_ampdu_allowed &&
1782 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1783 }
1784
1785 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1786 {
1787 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1788 struct tx_traffic_info *tx_stats;
1789
1790 BUG_ON(tid >= MWL8K_MAX_TID);
1791 tx_stats = &sta_info->tx_stats[tid];
1792
1793 if (tx_stats->start_time == 0)
1794 tx_stats->start_time = jiffies;
1795
1796 /* reset the packet count after each second elapses. If the number of
1797 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1798 * an ampdu stream to be started.
1799 */
1800 if (jiffies - tx_stats->start_time > HZ) {
1801 tx_stats->pkts = 0;
1802 tx_stats->start_time = 0;
1803 } else
1804 tx_stats->pkts++;
1805 }
1806
1807 static void
1808 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1809 {
1810 struct mwl8k_priv *priv = hw->priv;
1811 struct ieee80211_tx_info *tx_info;
1812 struct mwl8k_vif *mwl8k_vif;
1813 struct ieee80211_sta *sta;
1814 struct ieee80211_hdr *wh;
1815 struct mwl8k_tx_queue *txq;
1816 struct mwl8k_tx_desc *tx;
1817 dma_addr_t dma;
1818 u32 txstatus;
1819 u8 txdatarate;
1820 u16 qos;
1821 int txpriority;
1822 u8 tid = 0;
1823 struct mwl8k_ampdu_stream *stream = NULL;
1824 bool start_ba_session = false;
1825 bool mgmtframe = false;
1826 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1827
1828 wh = (struct ieee80211_hdr *)skb->data;
1829 if (ieee80211_is_data_qos(wh->frame_control))
1830 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1831 else
1832 qos = 0;
1833
1834 if (ieee80211_is_mgmt(wh->frame_control))
1835 mgmtframe = true;
1836
1837 if (priv->ap_fw)
1838 mwl8k_encapsulate_tx_frame(priv, skb);
1839 else
1840 mwl8k_add_dma_header(priv, skb, 0);
1841
1842 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1843
1844 tx_info = IEEE80211_SKB_CB(skb);
1845 sta = tx_info->control.sta;
1846 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1847
1848 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1849 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1850 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1851 mwl8k_vif->seqno += 0x10;
1852 }
1853
1854 /* Setup firmware control bit fields for each frame type. */
1855 txstatus = 0;
1856 txdatarate = 0;
1857 if (ieee80211_is_mgmt(wh->frame_control) ||
1858 ieee80211_is_ctl(wh->frame_control)) {
1859 txdatarate = 0;
1860 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1861 } else if (ieee80211_is_data(wh->frame_control)) {
1862 txdatarate = 1;
1863 if (is_multicast_ether_addr(wh->addr1))
1864 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1865
1866 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1867 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1868 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1869 else
1870 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1871 }
1872
1873 /* Queue ADDBA request in the respective data queue. While setting up
1874 * the ampdu stream, mac80211 queues further packets for that
1875 * particular ra/tid pair. However, packets piled up in the hardware
1876 * for that ra/tid pair will still go out. ADDBA request and the
1877 * related data packets going out from different queues asynchronously
1878 * will cause a shift in the receiver window which might result in
1879 * ampdu packets getting dropped at the receiver after the stream has
1880 * been setup.
1881 */
1882 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1883 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1884 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1885 priv->ap_fw)) {
1886 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1887 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1888 index = mwl8k_tid_queue_mapping(tid);
1889 }
1890
1891 txpriority = index;
1892
1893 if (ieee80211_is_data_qos(wh->frame_control) &&
1894 skb->protocol != cpu_to_be16(ETH_P_PAE) &&
1895 sta->ht_cap.ht_supported && priv->ap_fw) {
1896 tid = qos & 0xf;
1897 mwl8k_tx_count_packet(sta, tid);
1898 spin_lock(&priv->stream_lock);
1899 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1900 if (stream != NULL) {
1901 if (stream->state == AMPDU_STREAM_ACTIVE) {
1902 txpriority = stream->txq_idx;
1903 index = stream->txq_idx;
1904 } else if (stream->state == AMPDU_STREAM_NEW) {
1905 /* We get here if the driver sends us packets
1906 * after we've initiated a stream, but before
1907 * our ampdu_action routine has been called
1908 * with IEEE80211_AMPDU_TX_START to get the SSN
1909 * for the ADDBA request. So this packet can
1910 * go out with no risk of sequence number
1911 * mismatch. No special handling is required.
1912 */
1913 } else {
1914 /* Drop packets that would go out after the
1915 * ADDBA request was sent but before the ADDBA
1916 * response is received. If we don't do this,
1917 * the recipient would probably receive it
1918 * after the ADDBA request with SSN 0. This
1919 * will cause the recipient's BA receive window
1920 * to shift, which would cause the subsequent
1921 * packets in the BA stream to be discarded.
1922 * mac80211 queues our packets for us in this
1923 * case, so this is really just a safety check.
1924 */
1925 wiphy_warn(hw->wiphy,
1926 "Cannot send packet while ADDBA "
1927 "dialog is underway.\n");
1928 spin_unlock(&priv->stream_lock);
1929 dev_kfree_skb(skb);
1930 return;
1931 }
1932 } else {
1933 /* Defer calling mwl8k_start_stream so that the current
1934 * skb can go out before the ADDBA request. This
1935 * prevents sequence number mismatch at the recepient
1936 * as described above.
1937 */
1938 if (mwl8k_ampdu_allowed(sta, tid)) {
1939 stream = mwl8k_add_stream(hw, sta, tid);
1940 if (stream != NULL)
1941 start_ba_session = true;
1942 }
1943 }
1944 spin_unlock(&priv->stream_lock);
1945 }
1946
1947 dma = pci_map_single(priv->pdev, skb->data,
1948 skb->len, PCI_DMA_TODEVICE);
1949
1950 if (pci_dma_mapping_error(priv->pdev, dma)) {
1951 wiphy_debug(hw->wiphy,
1952 "failed to dma map skb, dropping TX frame.\n");
1953 if (start_ba_session) {
1954 spin_lock(&priv->stream_lock);
1955 mwl8k_remove_stream(hw, stream);
1956 spin_unlock(&priv->stream_lock);
1957 }
1958 dev_kfree_skb(skb);
1959 return;
1960 }
1961
1962 spin_lock_bh(&priv->tx_lock);
1963
1964 txq = priv->txq + index;
1965
1966 /* Mgmt frames that go out frequently are probe
1967 * responses. Other mgmt frames got out relatively
1968 * infrequently. Hence reserve 2 buffers so that
1969 * other mgmt frames do not get dropped due to an
1970 * already queued probe response in one of the
1971 * reserved buffers.
1972 */
1973
1974 if (txq->len >= MWL8K_TX_DESCS - 2) {
1975 if (mgmtframe == false ||
1976 txq->len == MWL8K_TX_DESCS) {
1977 if (start_ba_session) {
1978 spin_lock(&priv->stream_lock);
1979 mwl8k_remove_stream(hw, stream);
1980 spin_unlock(&priv->stream_lock);
1981 }
1982 spin_unlock_bh(&priv->tx_lock);
1983 dev_kfree_skb(skb);
1984 return;
1985 }
1986 }
1987
1988 BUG_ON(txq->skb[txq->tail] != NULL);
1989 txq->skb[txq->tail] = skb;
1990
1991 tx = txq->txd + txq->tail;
1992 tx->data_rate = txdatarate;
1993 tx->tx_priority = txpriority;
1994 tx->qos_control = cpu_to_le16(qos);
1995 tx->pkt_phys_addr = cpu_to_le32(dma);
1996 tx->pkt_len = cpu_to_le16(skb->len);
1997 tx->rate_info = 0;
1998 if (!priv->ap_fw && tx_info->control.sta != NULL)
1999 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2000 else
2001 tx->peer_id = 0;
2002
2003 if (priv->ap_fw)
2004 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2005 MWL8K_HW_TIMER_REGISTER));
2006
2007 wmb();
2008 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2009
2010 txq->len++;
2011 priv->pending_tx_pkts++;
2012
2013 txq->tail++;
2014 if (txq->tail == MWL8K_TX_DESCS)
2015 txq->tail = 0;
2016
2017 mwl8k_tx_start(priv);
2018
2019 spin_unlock_bh(&priv->tx_lock);
2020
2021 /* Initiate the ampdu session here */
2022 if (start_ba_session) {
2023 spin_lock(&priv->stream_lock);
2024 if (mwl8k_start_stream(hw, stream))
2025 mwl8k_remove_stream(hw, stream);
2026 spin_unlock(&priv->stream_lock);
2027 }
2028 }
2029
2030
2031 /*
2032 * Firmware access.
2033 *
2034 * We have the following requirements for issuing firmware commands:
2035 * - Some commands require that the packet transmit path is idle when
2036 * the command is issued. (For simplicity, we'll just quiesce the
2037 * transmit path for every command.)
2038 * - There are certain sequences of commands that need to be issued to
2039 * the hardware sequentially, with no other intervening commands.
2040 *
2041 * This leads to an implementation of a "firmware lock" as a mutex that
2042 * can be taken recursively, and which is taken by both the low-level
2043 * command submission function (mwl8k_post_cmd) as well as any users of
2044 * that function that require issuing of an atomic sequence of commands,
2045 * and quiesces the transmit path whenever it's taken.
2046 */
2047 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2048 {
2049 struct mwl8k_priv *priv = hw->priv;
2050
2051 if (priv->fw_mutex_owner != current) {
2052 int rc;
2053
2054 mutex_lock(&priv->fw_mutex);
2055 ieee80211_stop_queues(hw);
2056
2057 rc = mwl8k_tx_wait_empty(hw);
2058 if (rc) {
2059 ieee80211_wake_queues(hw);
2060 mutex_unlock(&priv->fw_mutex);
2061
2062 return rc;
2063 }
2064
2065 priv->fw_mutex_owner = current;
2066 }
2067
2068 priv->fw_mutex_depth++;
2069
2070 return 0;
2071 }
2072
2073 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2074 {
2075 struct mwl8k_priv *priv = hw->priv;
2076
2077 if (!--priv->fw_mutex_depth) {
2078 ieee80211_wake_queues(hw);
2079 priv->fw_mutex_owner = NULL;
2080 mutex_unlock(&priv->fw_mutex);
2081 }
2082 }
2083
2084
2085 /*
2086 * Command processing.
2087 */
2088
2089 /* Timeout firmware commands after 10s */
2090 #define MWL8K_CMD_TIMEOUT_MS 10000
2091
2092 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2093 {
2094 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2095 struct mwl8k_priv *priv = hw->priv;
2096 void __iomem *regs = priv->regs;
2097 dma_addr_t dma_addr;
2098 unsigned int dma_size;
2099 int rc;
2100 unsigned long timeout = 0;
2101 u8 buf[32];
2102
2103 cmd->result = (__force __le16) 0xffff;
2104 dma_size = le16_to_cpu(cmd->length);
2105 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2106 PCI_DMA_BIDIRECTIONAL);
2107 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2108 return -ENOMEM;
2109
2110 rc = mwl8k_fw_lock(hw);
2111 if (rc) {
2112 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2113 PCI_DMA_BIDIRECTIONAL);
2114 return rc;
2115 }
2116
2117 priv->hostcmd_wait = &cmd_wait;
2118 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2119 iowrite32(MWL8K_H2A_INT_DOORBELL,
2120 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2121 iowrite32(MWL8K_H2A_INT_DUMMY,
2122 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2123
2124 timeout = wait_for_completion_timeout(&cmd_wait,
2125 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2126
2127 priv->hostcmd_wait = NULL;
2128
2129 mwl8k_fw_unlock(hw);
2130
2131 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2132 PCI_DMA_BIDIRECTIONAL);
2133
2134 if (!timeout) {
2135 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2136 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2137 MWL8K_CMD_TIMEOUT_MS);
2138 rc = -ETIMEDOUT;
2139 } else {
2140 int ms;
2141
2142 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2143
2144 rc = cmd->result ? -EINVAL : 0;
2145 if (rc)
2146 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2147 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2148 le16_to_cpu(cmd->result));
2149 else if (ms > 2000)
2150 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2151 mwl8k_cmd_name(cmd->code,
2152 buf, sizeof(buf)),
2153 ms);
2154 }
2155
2156 return rc;
2157 }
2158
2159 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2160 struct ieee80211_vif *vif,
2161 struct mwl8k_cmd_pkt *cmd)
2162 {
2163 if (vif != NULL)
2164 cmd->macid = MWL8K_VIF(vif)->macid;
2165 return mwl8k_post_cmd(hw, cmd);
2166 }
2167
2168 /*
2169 * Setup code shared between STA and AP firmware images.
2170 */
2171 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2172 {
2173 struct mwl8k_priv *priv = hw->priv;
2174
2175 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2176 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2177
2178 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2179 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2180
2181 priv->band_24.band = IEEE80211_BAND_2GHZ;
2182 priv->band_24.channels = priv->channels_24;
2183 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2184 priv->band_24.bitrates = priv->rates_24;
2185 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2186
2187 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2188 }
2189
2190 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2191 {
2192 struct mwl8k_priv *priv = hw->priv;
2193
2194 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2195 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2196
2197 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2198 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2199
2200 priv->band_50.band = IEEE80211_BAND_5GHZ;
2201 priv->band_50.channels = priv->channels_50;
2202 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2203 priv->band_50.bitrates = priv->rates_50;
2204 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2205
2206 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2207 }
2208
2209 /*
2210 * CMD_GET_HW_SPEC (STA version).
2211 */
2212 struct mwl8k_cmd_get_hw_spec_sta {
2213 struct mwl8k_cmd_pkt header;
2214 __u8 hw_rev;
2215 __u8 host_interface;
2216 __le16 num_mcaddrs;
2217 __u8 perm_addr[ETH_ALEN];
2218 __le16 region_code;
2219 __le32 fw_rev;
2220 __le32 ps_cookie;
2221 __le32 caps;
2222 __u8 mcs_bitmap[16];
2223 __le32 rx_queue_ptr;
2224 __le32 num_tx_queues;
2225 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2226 __le32 caps2;
2227 __le32 num_tx_desc_per_queue;
2228 __le32 total_rxd;
2229 } __packed;
2230
2231 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2232 #define MWL8K_CAP_GREENFIELD 0x08000000
2233 #define MWL8K_CAP_AMPDU 0x04000000
2234 #define MWL8K_CAP_RX_STBC 0x01000000
2235 #define MWL8K_CAP_TX_STBC 0x00800000
2236 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2237 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2238 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2239 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2240 #define MWL8K_CAP_DELAY_BA 0x00003000
2241 #define MWL8K_CAP_MIMO 0x00000200
2242 #define MWL8K_CAP_40MHZ 0x00000100
2243 #define MWL8K_CAP_BAND_MASK 0x00000007
2244 #define MWL8K_CAP_5GHZ 0x00000004
2245 #define MWL8K_CAP_2GHZ4 0x00000001
2246
2247 static void
2248 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2249 struct ieee80211_supported_band *band, u32 cap)
2250 {
2251 int rx_streams;
2252 int tx_streams;
2253
2254 band->ht_cap.ht_supported = 1;
2255
2256 if (cap & MWL8K_CAP_MAX_AMSDU)
2257 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2258 if (cap & MWL8K_CAP_GREENFIELD)
2259 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2260 if (cap & MWL8K_CAP_AMPDU) {
2261 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2262 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2263 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2264 }
2265 if (cap & MWL8K_CAP_RX_STBC)
2266 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2267 if (cap & MWL8K_CAP_TX_STBC)
2268 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2269 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2270 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2271 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2272 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2273 if (cap & MWL8K_CAP_DELAY_BA)
2274 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2275 if (cap & MWL8K_CAP_40MHZ)
2276 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2277
2278 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2279 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2280
2281 band->ht_cap.mcs.rx_mask[0] = 0xff;
2282 if (rx_streams >= 2)
2283 band->ht_cap.mcs.rx_mask[1] = 0xff;
2284 if (rx_streams >= 3)
2285 band->ht_cap.mcs.rx_mask[2] = 0xff;
2286 band->ht_cap.mcs.rx_mask[4] = 0x01;
2287 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2288
2289 if (rx_streams != tx_streams) {
2290 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2291 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2292 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2293 }
2294 }
2295
2296 static void
2297 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2298 {
2299 struct mwl8k_priv *priv = hw->priv;
2300
2301 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2302 mwl8k_setup_2ghz_band(hw);
2303 if (caps & MWL8K_CAP_MIMO)
2304 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2305 }
2306
2307 if (caps & MWL8K_CAP_5GHZ) {
2308 mwl8k_setup_5ghz_band(hw);
2309 if (caps & MWL8K_CAP_MIMO)
2310 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2311 }
2312 }
2313
2314 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2315 {
2316 struct mwl8k_priv *priv = hw->priv;
2317 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2318 int rc;
2319 int i;
2320
2321 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2322 if (cmd == NULL)
2323 return -ENOMEM;
2324
2325 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2326 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2327
2328 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2329 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2330 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2331 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2332 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2333 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2334 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2335 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2336
2337 rc = mwl8k_post_cmd(hw, &cmd->header);
2338
2339 if (!rc) {
2340 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2341 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2342 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2343 priv->hw_rev = cmd->hw_rev;
2344 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2345 priv->ap_macids_supported = 0x00000000;
2346 priv->sta_macids_supported = 0x00000001;
2347 }
2348
2349 kfree(cmd);
2350 return rc;
2351 }
2352
2353 /*
2354 * CMD_GET_HW_SPEC (AP version).
2355 */
2356 struct mwl8k_cmd_get_hw_spec_ap {
2357 struct mwl8k_cmd_pkt header;
2358 __u8 hw_rev;
2359 __u8 host_interface;
2360 __le16 num_wcb;
2361 __le16 num_mcaddrs;
2362 __u8 perm_addr[ETH_ALEN];
2363 __le16 region_code;
2364 __le16 num_antenna;
2365 __le32 fw_rev;
2366 __le32 wcbbase0;
2367 __le32 rxwrptr;
2368 __le32 rxrdptr;
2369 __le32 ps_cookie;
2370 __le32 wcbbase1;
2371 __le32 wcbbase2;
2372 __le32 wcbbase3;
2373 __le32 fw_api_version;
2374 __le32 caps;
2375 __le32 num_of_ampdu_queues;
2376 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2377 } __packed;
2378
2379 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2380 {
2381 struct mwl8k_priv *priv = hw->priv;
2382 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2383 int rc, i;
2384 u32 api_version;
2385
2386 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2387 if (cmd == NULL)
2388 return -ENOMEM;
2389
2390 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2391 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2392
2393 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2394 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2395
2396 rc = mwl8k_post_cmd(hw, &cmd->header);
2397
2398 if (!rc) {
2399 int off;
2400
2401 api_version = le32_to_cpu(cmd->fw_api_version);
2402 if (priv->device_info->fw_api_ap != api_version) {
2403 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2404 " Expected %d got %d.\n", MWL8K_NAME,
2405 priv->device_info->part_name,
2406 priv->device_info->fw_api_ap,
2407 api_version);
2408 rc = -EINVAL;
2409 goto done;
2410 }
2411 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2412 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2413 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2414 priv->hw_rev = cmd->hw_rev;
2415 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2416 priv->ap_macids_supported = 0x000000ff;
2417 priv->sta_macids_supported = 0x00000000;
2418 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2419 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2420 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2421 " but we only support %d.\n",
2422 priv->num_ampdu_queues,
2423 MWL8K_MAX_AMPDU_QUEUES);
2424 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2425 }
2426 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2427 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2428
2429 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2430 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2431
2432 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2433 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2434 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2435 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2436
2437 for (i = 0; i < priv->num_ampdu_queues; i++)
2438 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2439 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2440 }
2441
2442 done:
2443 kfree(cmd);
2444 return rc;
2445 }
2446
2447 /*
2448 * CMD_SET_HW_SPEC.
2449 */
2450 struct mwl8k_cmd_set_hw_spec {
2451 struct mwl8k_cmd_pkt header;
2452 __u8 hw_rev;
2453 __u8 host_interface;
2454 __le16 num_mcaddrs;
2455 __u8 perm_addr[ETH_ALEN];
2456 __le16 region_code;
2457 __le32 fw_rev;
2458 __le32 ps_cookie;
2459 __le32 caps;
2460 __le32 rx_queue_ptr;
2461 __le32 num_tx_queues;
2462 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2463 __le32 flags;
2464 __le32 num_tx_desc_per_queue;
2465 __le32 total_rxd;
2466 } __packed;
2467
2468 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2469 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2470 * the packets that are queued for more than 500ms, will be dropped in the
2471 * hardware. This helps minimizing the issues caused due to head-of-line
2472 * blocking where a slow client can hog the bandwidth and affect traffic to a
2473 * faster client.
2474 */
2475 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2476 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2477 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2478 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2479
2480 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2481 {
2482 struct mwl8k_priv *priv = hw->priv;
2483 struct mwl8k_cmd_set_hw_spec *cmd;
2484 int rc;
2485 int i;
2486
2487 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2488 if (cmd == NULL)
2489 return -ENOMEM;
2490
2491 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2492 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2493
2494 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2495 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2496 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2497
2498 /*
2499 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2500 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2501 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2502 * priority is interpreted the right way in firmware.
2503 */
2504 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2505 int j = mwl8k_tx_queues(priv) - 1 - i;
2506 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2507 }
2508
2509 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2510 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2511 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2512 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY);
2513 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2514 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2515
2516 rc = mwl8k_post_cmd(hw, &cmd->header);
2517 kfree(cmd);
2518
2519 return rc;
2520 }
2521
2522 /*
2523 * CMD_MAC_MULTICAST_ADR.
2524 */
2525 struct mwl8k_cmd_mac_multicast_adr {
2526 struct mwl8k_cmd_pkt header;
2527 __le16 action;
2528 __le16 numaddr;
2529 __u8 addr[0][ETH_ALEN];
2530 };
2531
2532 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2533 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2534 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2535 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2536
2537 static struct mwl8k_cmd_pkt *
2538 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2539 struct netdev_hw_addr_list *mc_list)
2540 {
2541 struct mwl8k_priv *priv = hw->priv;
2542 struct mwl8k_cmd_mac_multicast_adr *cmd;
2543 int size;
2544 int mc_count = 0;
2545
2546 if (mc_list)
2547 mc_count = netdev_hw_addr_list_count(mc_list);
2548
2549 if (allmulti || mc_count > priv->num_mcaddrs) {
2550 allmulti = 1;
2551 mc_count = 0;
2552 }
2553
2554 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2555
2556 cmd = kzalloc(size, GFP_ATOMIC);
2557 if (cmd == NULL)
2558 return NULL;
2559
2560 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2561 cmd->header.length = cpu_to_le16(size);
2562 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2563 MWL8K_ENABLE_RX_BROADCAST);
2564
2565 if (allmulti) {
2566 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2567 } else if (mc_count) {
2568 struct netdev_hw_addr *ha;
2569 int i = 0;
2570
2571 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2572 cmd->numaddr = cpu_to_le16(mc_count);
2573 netdev_hw_addr_list_for_each(ha, mc_list) {
2574 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2575 }
2576 }
2577
2578 return &cmd->header;
2579 }
2580
2581 /*
2582 * CMD_GET_STAT.
2583 */
2584 struct mwl8k_cmd_get_stat {
2585 struct mwl8k_cmd_pkt header;
2586 __le32 stats[64];
2587 } __packed;
2588
2589 #define MWL8K_STAT_ACK_FAILURE 9
2590 #define MWL8K_STAT_RTS_FAILURE 12
2591 #define MWL8K_STAT_FCS_ERROR 24
2592 #define MWL8K_STAT_RTS_SUCCESS 11
2593
2594 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2595 struct ieee80211_low_level_stats *stats)
2596 {
2597 struct mwl8k_cmd_get_stat *cmd;
2598 int rc;
2599
2600 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2601 if (cmd == NULL)
2602 return -ENOMEM;
2603
2604 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2605 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2606
2607 rc = mwl8k_post_cmd(hw, &cmd->header);
2608 if (!rc) {
2609 stats->dot11ACKFailureCount =
2610 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2611 stats->dot11RTSFailureCount =
2612 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2613 stats->dot11FCSErrorCount =
2614 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2615 stats->dot11RTSSuccessCount =
2616 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2617 }
2618 kfree(cmd);
2619
2620 return rc;
2621 }
2622
2623 /*
2624 * CMD_RADIO_CONTROL.
2625 */
2626 struct mwl8k_cmd_radio_control {
2627 struct mwl8k_cmd_pkt header;
2628 __le16 action;
2629 __le16 control;
2630 __le16 radio_on;
2631 } __packed;
2632
2633 static int
2634 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2635 {
2636 struct mwl8k_priv *priv = hw->priv;
2637 struct mwl8k_cmd_radio_control *cmd;
2638 int rc;
2639
2640 if (enable == priv->radio_on && !force)
2641 return 0;
2642
2643 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2644 if (cmd == NULL)
2645 return -ENOMEM;
2646
2647 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2648 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2649 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2650 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2651 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2652
2653 rc = mwl8k_post_cmd(hw, &cmd->header);
2654 kfree(cmd);
2655
2656 if (!rc)
2657 priv->radio_on = enable;
2658
2659 return rc;
2660 }
2661
2662 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2663 {
2664 return mwl8k_cmd_radio_control(hw, 0, 0);
2665 }
2666
2667 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2668 {
2669 return mwl8k_cmd_radio_control(hw, 1, 0);
2670 }
2671
2672 static int
2673 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2674 {
2675 struct mwl8k_priv *priv = hw->priv;
2676
2677 priv->radio_short_preamble = short_preamble;
2678
2679 return mwl8k_cmd_radio_control(hw, 1, 1);
2680 }
2681
2682 /*
2683 * CMD_RF_TX_POWER.
2684 */
2685 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2686
2687 struct mwl8k_cmd_rf_tx_power {
2688 struct mwl8k_cmd_pkt header;
2689 __le16 action;
2690 __le16 support_level;
2691 __le16 current_level;
2692 __le16 reserved;
2693 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2694 } __packed;
2695
2696 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2697 {
2698 struct mwl8k_cmd_rf_tx_power *cmd;
2699 int rc;
2700
2701 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2702 if (cmd == NULL)
2703 return -ENOMEM;
2704
2705 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2706 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2707 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2708 cmd->support_level = cpu_to_le16(dBm);
2709
2710 rc = mwl8k_post_cmd(hw, &cmd->header);
2711 kfree(cmd);
2712
2713 return rc;
2714 }
2715
2716 /*
2717 * CMD_TX_POWER.
2718 */
2719 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2720
2721 struct mwl8k_cmd_tx_power {
2722 struct mwl8k_cmd_pkt header;
2723 __le16 action;
2724 __le16 band;
2725 __le16 channel;
2726 __le16 bw;
2727 __le16 sub_ch;
2728 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2729 } __packed;
2730
2731 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2732 struct ieee80211_conf *conf,
2733 unsigned short pwr)
2734 {
2735 struct ieee80211_channel *channel = conf->channel;
2736 struct mwl8k_cmd_tx_power *cmd;
2737 int rc;
2738 int i;
2739
2740 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2741 if (cmd == NULL)
2742 return -ENOMEM;
2743
2744 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2745 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2746 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2747
2748 if (channel->band == IEEE80211_BAND_2GHZ)
2749 cmd->band = cpu_to_le16(0x1);
2750 else if (channel->band == IEEE80211_BAND_5GHZ)
2751 cmd->band = cpu_to_le16(0x4);
2752
2753 cmd->channel = channel->hw_value;
2754
2755 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2756 conf->channel_type == NL80211_CHAN_HT20) {
2757 cmd->bw = cpu_to_le16(0x2);
2758 } else {
2759 cmd->bw = cpu_to_le16(0x4);
2760 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2761 cmd->sub_ch = cpu_to_le16(0x3);
2762 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2763 cmd->sub_ch = cpu_to_le16(0x1);
2764 }
2765
2766 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2767 cmd->power_level_list[i] = cpu_to_le16(pwr);
2768
2769 rc = mwl8k_post_cmd(hw, &cmd->header);
2770 kfree(cmd);
2771
2772 return rc;
2773 }
2774
2775 /*
2776 * CMD_RF_ANTENNA.
2777 */
2778 struct mwl8k_cmd_rf_antenna {
2779 struct mwl8k_cmd_pkt header;
2780 __le16 antenna;
2781 __le16 mode;
2782 } __packed;
2783
2784 #define MWL8K_RF_ANTENNA_RX 1
2785 #define MWL8K_RF_ANTENNA_TX 2
2786
2787 static int
2788 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2789 {
2790 struct mwl8k_cmd_rf_antenna *cmd;
2791 int rc;
2792
2793 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2794 if (cmd == NULL)
2795 return -ENOMEM;
2796
2797 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2798 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2799 cmd->antenna = cpu_to_le16(antenna);
2800 cmd->mode = cpu_to_le16(mask);
2801
2802 rc = mwl8k_post_cmd(hw, &cmd->header);
2803 kfree(cmd);
2804
2805 return rc;
2806 }
2807
2808 /*
2809 * CMD_SET_BEACON.
2810 */
2811 struct mwl8k_cmd_set_beacon {
2812 struct mwl8k_cmd_pkt header;
2813 __le16 beacon_len;
2814 __u8 beacon[0];
2815 };
2816
2817 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2818 struct ieee80211_vif *vif, u8 *beacon, int len)
2819 {
2820 struct mwl8k_cmd_set_beacon *cmd;
2821 int rc;
2822
2823 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2824 if (cmd == NULL)
2825 return -ENOMEM;
2826
2827 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2828 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2829 cmd->beacon_len = cpu_to_le16(len);
2830 memcpy(cmd->beacon, beacon, len);
2831
2832 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2833 kfree(cmd);
2834
2835 return rc;
2836 }
2837
2838 /*
2839 * CMD_SET_PRE_SCAN.
2840 */
2841 struct mwl8k_cmd_set_pre_scan {
2842 struct mwl8k_cmd_pkt header;
2843 } __packed;
2844
2845 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2846 {
2847 struct mwl8k_cmd_set_pre_scan *cmd;
2848 int rc;
2849
2850 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2851 if (cmd == NULL)
2852 return -ENOMEM;
2853
2854 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2855 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2856
2857 rc = mwl8k_post_cmd(hw, &cmd->header);
2858 kfree(cmd);
2859
2860 return rc;
2861 }
2862
2863 /*
2864 * CMD_SET_POST_SCAN.
2865 */
2866 struct mwl8k_cmd_set_post_scan {
2867 struct mwl8k_cmd_pkt header;
2868 __le32 isibss;
2869 __u8 bssid[ETH_ALEN];
2870 } __packed;
2871
2872 static int
2873 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2874 {
2875 struct mwl8k_cmd_set_post_scan *cmd;
2876 int rc;
2877
2878 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2879 if (cmd == NULL)
2880 return -ENOMEM;
2881
2882 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2883 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2884 cmd->isibss = 0;
2885 memcpy(cmd->bssid, mac, ETH_ALEN);
2886
2887 rc = mwl8k_post_cmd(hw, &cmd->header);
2888 kfree(cmd);
2889
2890 return rc;
2891 }
2892
2893 /*
2894 * CMD_SET_RF_CHANNEL.
2895 */
2896 struct mwl8k_cmd_set_rf_channel {
2897 struct mwl8k_cmd_pkt header;
2898 __le16 action;
2899 __u8 current_channel;
2900 __le32 channel_flags;
2901 } __packed;
2902
2903 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2904 struct ieee80211_conf *conf)
2905 {
2906 struct ieee80211_channel *channel = conf->channel;
2907 struct mwl8k_cmd_set_rf_channel *cmd;
2908 int rc;
2909
2910 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2911 if (cmd == NULL)
2912 return -ENOMEM;
2913
2914 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2915 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2916 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2917 cmd->current_channel = channel->hw_value;
2918
2919 if (channel->band == IEEE80211_BAND_2GHZ)
2920 cmd->channel_flags |= cpu_to_le32(0x00000001);
2921 else if (channel->band == IEEE80211_BAND_5GHZ)
2922 cmd->channel_flags |= cpu_to_le32(0x00000004);
2923
2924 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2925 conf->channel_type == NL80211_CHAN_HT20)
2926 cmd->channel_flags |= cpu_to_le32(0x00000080);
2927 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2928 cmd->channel_flags |= cpu_to_le32(0x000001900);
2929 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2930 cmd->channel_flags |= cpu_to_le32(0x000000900);
2931
2932 rc = mwl8k_post_cmd(hw, &cmd->header);
2933 kfree(cmd);
2934
2935 return rc;
2936 }
2937
2938 /*
2939 * CMD_SET_AID.
2940 */
2941 #define MWL8K_FRAME_PROT_DISABLED 0x00
2942 #define MWL8K_FRAME_PROT_11G 0x07
2943 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2944 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2945
2946 struct mwl8k_cmd_update_set_aid {
2947 struct mwl8k_cmd_pkt header;
2948 __le16 aid;
2949
2950 /* AP's MAC address (BSSID) */
2951 __u8 bssid[ETH_ALEN];
2952 __le16 protection_mode;
2953 __u8 supp_rates[14];
2954 } __packed;
2955
2956 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2957 {
2958 int i;
2959 int j;
2960
2961 /*
2962 * Clear nonstandard rates 4 and 13.
2963 */
2964 mask &= 0x1fef;
2965
2966 for (i = 0, j = 0; i < 14; i++) {
2967 if (mask & (1 << i))
2968 rates[j++] = mwl8k_rates_24[i].hw_value;
2969 }
2970 }
2971
2972 static int
2973 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2974 struct ieee80211_vif *vif, u32 legacy_rate_mask)
2975 {
2976 struct mwl8k_cmd_update_set_aid *cmd;
2977 u16 prot_mode;
2978 int rc;
2979
2980 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2981 if (cmd == NULL)
2982 return -ENOMEM;
2983
2984 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2985 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2986 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2987 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2988
2989 if (vif->bss_conf.use_cts_prot) {
2990 prot_mode = MWL8K_FRAME_PROT_11G;
2991 } else {
2992 switch (vif->bss_conf.ht_operation_mode &
2993 IEEE80211_HT_OP_MODE_PROTECTION) {
2994 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2995 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2996 break;
2997 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2998 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2999 break;
3000 default:
3001 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3002 break;
3003 }
3004 }
3005 cmd->protection_mode = cpu_to_le16(prot_mode);
3006
3007 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3008
3009 rc = mwl8k_post_cmd(hw, &cmd->header);
3010 kfree(cmd);
3011
3012 return rc;
3013 }
3014
3015 /*
3016 * CMD_SET_RATE.
3017 */
3018 struct mwl8k_cmd_set_rate {
3019 struct mwl8k_cmd_pkt header;
3020 __u8 legacy_rates[14];
3021
3022 /* Bitmap for supported MCS codes. */
3023 __u8 mcs_set[16];
3024 __u8 reserved[16];
3025 } __packed;
3026
3027 static int
3028 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3029 u32 legacy_rate_mask, u8 *mcs_rates)
3030 {
3031 struct mwl8k_cmd_set_rate *cmd;
3032 int rc;
3033
3034 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3035 if (cmd == NULL)
3036 return -ENOMEM;
3037
3038 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3039 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3040 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3041 memcpy(cmd->mcs_set, mcs_rates, 16);
3042
3043 rc = mwl8k_post_cmd(hw, &cmd->header);
3044 kfree(cmd);
3045
3046 return rc;
3047 }
3048
3049 /*
3050 * CMD_FINALIZE_JOIN.
3051 */
3052 #define MWL8K_FJ_BEACON_MAXLEN 128
3053
3054 struct mwl8k_cmd_finalize_join {
3055 struct mwl8k_cmd_pkt header;
3056 __le32 sleep_interval; /* Number of beacon periods to sleep */
3057 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3058 } __packed;
3059
3060 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3061 int framelen, int dtim)
3062 {
3063 struct mwl8k_cmd_finalize_join *cmd;
3064 struct ieee80211_mgmt *payload = frame;
3065 int payload_len;
3066 int rc;
3067
3068 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3069 if (cmd == NULL)
3070 return -ENOMEM;
3071
3072 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3073 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3074 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3075
3076 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3077 if (payload_len < 0)
3078 payload_len = 0;
3079 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3080 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3081
3082 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3083
3084 rc = mwl8k_post_cmd(hw, &cmd->header);
3085 kfree(cmd);
3086
3087 return rc;
3088 }
3089
3090 /*
3091 * CMD_SET_RTS_THRESHOLD.
3092 */
3093 struct mwl8k_cmd_set_rts_threshold {
3094 struct mwl8k_cmd_pkt header;
3095 __le16 action;
3096 __le16 threshold;
3097 } __packed;
3098
3099 static int
3100 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3101 {
3102 struct mwl8k_cmd_set_rts_threshold *cmd;
3103 int rc;
3104
3105 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3106 if (cmd == NULL)
3107 return -ENOMEM;
3108
3109 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3110 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3111 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3112 cmd->threshold = cpu_to_le16(rts_thresh);
3113
3114 rc = mwl8k_post_cmd(hw, &cmd->header);
3115 kfree(cmd);
3116
3117 return rc;
3118 }
3119
3120 /*
3121 * CMD_SET_SLOT.
3122 */
3123 struct mwl8k_cmd_set_slot {
3124 struct mwl8k_cmd_pkt header;
3125 __le16 action;
3126 __u8 short_slot;
3127 } __packed;
3128
3129 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3130 {
3131 struct mwl8k_cmd_set_slot *cmd;
3132 int rc;
3133
3134 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3135 if (cmd == NULL)
3136 return -ENOMEM;
3137
3138 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3139 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3140 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3141 cmd->short_slot = short_slot_time;
3142
3143 rc = mwl8k_post_cmd(hw, &cmd->header);
3144 kfree(cmd);
3145
3146 return rc;
3147 }
3148
3149 /*
3150 * CMD_SET_EDCA_PARAMS.
3151 */
3152 struct mwl8k_cmd_set_edca_params {
3153 struct mwl8k_cmd_pkt header;
3154
3155 /* See MWL8K_SET_EDCA_XXX below */
3156 __le16 action;
3157
3158 /* TX opportunity in units of 32 us */
3159 __le16 txop;
3160
3161 union {
3162 struct {
3163 /* Log exponent of max contention period: 0...15 */
3164 __le32 log_cw_max;
3165
3166 /* Log exponent of min contention period: 0...15 */
3167 __le32 log_cw_min;
3168
3169 /* Adaptive interframe spacing in units of 32us */
3170 __u8 aifs;
3171
3172 /* TX queue to configure */
3173 __u8 txq;
3174 } ap;
3175 struct {
3176 /* Log exponent of max contention period: 0...15 */
3177 __u8 log_cw_max;
3178
3179 /* Log exponent of min contention period: 0...15 */
3180 __u8 log_cw_min;
3181
3182 /* Adaptive interframe spacing in units of 32us */
3183 __u8 aifs;
3184
3185 /* TX queue to configure */
3186 __u8 txq;
3187 } sta;
3188 };
3189 } __packed;
3190
3191 #define MWL8K_SET_EDCA_CW 0x01
3192 #define MWL8K_SET_EDCA_TXOP 0x02
3193 #define MWL8K_SET_EDCA_AIFS 0x04
3194
3195 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3196 MWL8K_SET_EDCA_TXOP | \
3197 MWL8K_SET_EDCA_AIFS)
3198
3199 static int
3200 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3201 __u16 cw_min, __u16 cw_max,
3202 __u8 aifs, __u16 txop)
3203 {
3204 struct mwl8k_priv *priv = hw->priv;
3205 struct mwl8k_cmd_set_edca_params *cmd;
3206 int rc;
3207
3208 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3209 if (cmd == NULL)
3210 return -ENOMEM;
3211
3212 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3213 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3214 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3215 cmd->txop = cpu_to_le16(txop);
3216 if (priv->ap_fw) {
3217 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3218 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3219 cmd->ap.aifs = aifs;
3220 cmd->ap.txq = qnum;
3221 } else {
3222 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3223 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3224 cmd->sta.aifs = aifs;
3225 cmd->sta.txq = qnum;
3226 }
3227
3228 rc = mwl8k_post_cmd(hw, &cmd->header);
3229 kfree(cmd);
3230
3231 return rc;
3232 }
3233
3234 /*
3235 * CMD_SET_WMM_MODE.
3236 */
3237 struct mwl8k_cmd_set_wmm_mode {
3238 struct mwl8k_cmd_pkt header;
3239 __le16 action;
3240 } __packed;
3241
3242 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3243 {
3244 struct mwl8k_priv *priv = hw->priv;
3245 struct mwl8k_cmd_set_wmm_mode *cmd;
3246 int rc;
3247
3248 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3249 if (cmd == NULL)
3250 return -ENOMEM;
3251
3252 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3253 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3254 cmd->action = cpu_to_le16(!!enable);
3255
3256 rc = mwl8k_post_cmd(hw, &cmd->header);
3257 kfree(cmd);
3258
3259 if (!rc)
3260 priv->wmm_enabled = enable;
3261
3262 return rc;
3263 }
3264
3265 /*
3266 * CMD_MIMO_CONFIG.
3267 */
3268 struct mwl8k_cmd_mimo_config {
3269 struct mwl8k_cmd_pkt header;
3270 __le32 action;
3271 __u8 rx_antenna_map;
3272 __u8 tx_antenna_map;
3273 } __packed;
3274
3275 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3276 {
3277 struct mwl8k_cmd_mimo_config *cmd;
3278 int rc;
3279
3280 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3281 if (cmd == NULL)
3282 return -ENOMEM;
3283
3284 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3285 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3286 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3287 cmd->rx_antenna_map = rx;
3288 cmd->tx_antenna_map = tx;
3289
3290 rc = mwl8k_post_cmd(hw, &cmd->header);
3291 kfree(cmd);
3292
3293 return rc;
3294 }
3295
3296 /*
3297 * CMD_USE_FIXED_RATE (STA version).
3298 */
3299 struct mwl8k_cmd_use_fixed_rate_sta {
3300 struct mwl8k_cmd_pkt header;
3301 __le32 action;
3302 __le32 allow_rate_drop;
3303 __le32 num_rates;
3304 struct {
3305 __le32 is_ht_rate;
3306 __le32 enable_retry;
3307 __le32 rate;
3308 __le32 retry_count;
3309 } rate_entry[8];
3310 __le32 rate_type;
3311 __le32 reserved1;
3312 __le32 reserved2;
3313 } __packed;
3314
3315 #define MWL8K_USE_AUTO_RATE 0x0002
3316 #define MWL8K_UCAST_RATE 0
3317
3318 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3319 {
3320 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3321 int rc;
3322
3323 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3324 if (cmd == NULL)
3325 return -ENOMEM;
3326
3327 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3328 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3329 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3330 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3331
3332 rc = mwl8k_post_cmd(hw, &cmd->header);
3333 kfree(cmd);
3334
3335 return rc;
3336 }
3337
3338 /*
3339 * CMD_USE_FIXED_RATE (AP version).
3340 */
3341 struct mwl8k_cmd_use_fixed_rate_ap {
3342 struct mwl8k_cmd_pkt header;
3343 __le32 action;
3344 __le32 allow_rate_drop;
3345 __le32 num_rates;
3346 struct mwl8k_rate_entry_ap {
3347 __le32 is_ht_rate;
3348 __le32 enable_retry;
3349 __le32 rate;
3350 __le32 retry_count;
3351 } rate_entry[4];
3352 u8 multicast_rate;
3353 u8 multicast_rate_type;
3354 u8 management_rate;
3355 } __packed;
3356
3357 static int
3358 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3359 {
3360 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3361 int rc;
3362
3363 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3364 if (cmd == NULL)
3365 return -ENOMEM;
3366
3367 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3368 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3369 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3370 cmd->multicast_rate = mcast;
3371 cmd->management_rate = mgmt;
3372
3373 rc = mwl8k_post_cmd(hw, &cmd->header);
3374 kfree(cmd);
3375
3376 return rc;
3377 }
3378
3379 /*
3380 * CMD_ENABLE_SNIFFER.
3381 */
3382 struct mwl8k_cmd_enable_sniffer {
3383 struct mwl8k_cmd_pkt header;
3384 __le32 action;
3385 } __packed;
3386
3387 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3388 {
3389 struct mwl8k_cmd_enable_sniffer *cmd;
3390 int rc;
3391
3392 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3393 if (cmd == NULL)
3394 return -ENOMEM;
3395
3396 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3397 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3398 cmd->action = cpu_to_le32(!!enable);
3399
3400 rc = mwl8k_post_cmd(hw, &cmd->header);
3401 kfree(cmd);
3402
3403 return rc;
3404 }
3405
3406 /*
3407 * CMD_SET_MAC_ADDR.
3408 */
3409 struct mwl8k_cmd_set_mac_addr {
3410 struct mwl8k_cmd_pkt header;
3411 union {
3412 struct {
3413 __le16 mac_type;
3414 __u8 mac_addr[ETH_ALEN];
3415 } mbss;
3416 __u8 mac_addr[ETH_ALEN];
3417 };
3418 } __packed;
3419
3420 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3421 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3422 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3423 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3424
3425 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3426 struct ieee80211_vif *vif, u8 *mac)
3427 {
3428 struct mwl8k_priv *priv = hw->priv;
3429 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3430 struct mwl8k_cmd_set_mac_addr *cmd;
3431 int mac_type;
3432 int rc;
3433
3434 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3435 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3436 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3437 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3438 else
3439 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3440 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3441 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3442 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3443 else
3444 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3445 }
3446
3447 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3448 if (cmd == NULL)
3449 return -ENOMEM;
3450
3451 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3452 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3453 if (priv->ap_fw) {
3454 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3455 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3456 } else {
3457 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3458 }
3459
3460 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3461 kfree(cmd);
3462
3463 return rc;
3464 }
3465
3466 /*
3467 * CMD_SET_RATEADAPT_MODE.
3468 */
3469 struct mwl8k_cmd_set_rate_adapt_mode {
3470 struct mwl8k_cmd_pkt header;
3471 __le16 action;
3472 __le16 mode;
3473 } __packed;
3474
3475 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3476 {
3477 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3478 int rc;
3479
3480 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3481 if (cmd == NULL)
3482 return -ENOMEM;
3483
3484 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3485 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3486 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3487 cmd->mode = cpu_to_le16(mode);
3488
3489 rc = mwl8k_post_cmd(hw, &cmd->header);
3490 kfree(cmd);
3491
3492 return rc;
3493 }
3494
3495 /*
3496 * CMD_GET_WATCHDOG_BITMAP.
3497 */
3498 struct mwl8k_cmd_get_watchdog_bitmap {
3499 struct mwl8k_cmd_pkt header;
3500 u8 bitmap;
3501 } __packed;
3502
3503 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3504 {
3505 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3506 int rc;
3507
3508 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3509 if (cmd == NULL)
3510 return -ENOMEM;
3511
3512 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3513 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3514
3515 rc = mwl8k_post_cmd(hw, &cmd->header);
3516 if (!rc)
3517 *bitmap = cmd->bitmap;
3518
3519 kfree(cmd);
3520
3521 return rc;
3522 }
3523
3524 #define INVALID_BA 0xAA
3525 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3526 {
3527 int rc;
3528 u8 bitmap = 0, stream_index;
3529 struct mwl8k_ampdu_stream *streams;
3530 struct mwl8k_priv *priv =
3531 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3532
3533 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3534 if (rc)
3535 return;
3536
3537 if (bitmap == INVALID_BA)
3538 return;
3539
3540 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3541 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3542
3543 BUG_ON(stream_index >= priv->num_ampdu_queues);
3544
3545 streams = &priv->ampdu[stream_index];
3546
3547 if (streams->state == AMPDU_STREAM_ACTIVE)
3548 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3549
3550 return;
3551 }
3552
3553
3554 /*
3555 * CMD_BSS_START.
3556 */
3557 struct mwl8k_cmd_bss_start {
3558 struct mwl8k_cmd_pkt header;
3559 __le32 enable;
3560 } __packed;
3561
3562 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3563 struct ieee80211_vif *vif, int enable)
3564 {
3565 struct mwl8k_cmd_bss_start *cmd;
3566 int rc;
3567
3568 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3569 if (cmd == NULL)
3570 return -ENOMEM;
3571
3572 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3573 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3574 cmd->enable = cpu_to_le32(enable);
3575
3576 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3577 kfree(cmd);
3578
3579 return rc;
3580 }
3581
3582 /*
3583 * CMD_BASTREAM.
3584 */
3585
3586 /*
3587 * UPSTREAM is tx direction
3588 */
3589 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3590 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3591
3592 enum ba_stream_action_type {
3593 MWL8K_BA_CREATE,
3594 MWL8K_BA_UPDATE,
3595 MWL8K_BA_DESTROY,
3596 MWL8K_BA_FLUSH,
3597 MWL8K_BA_CHECK,
3598 };
3599
3600
3601 struct mwl8k_create_ba_stream {
3602 __le32 flags;
3603 __le32 idle_thrs;
3604 __le32 bar_thrs;
3605 __le32 window_size;
3606 u8 peer_mac_addr[6];
3607 u8 dialog_token;
3608 u8 tid;
3609 u8 queue_id;
3610 u8 param_info;
3611 __le32 ba_context;
3612 u8 reset_seq_no_flag;
3613 __le16 curr_seq_no;
3614 u8 sta_src_mac_addr[6];
3615 } __packed;
3616
3617 struct mwl8k_destroy_ba_stream {
3618 __le32 flags;
3619 __le32 ba_context;
3620 } __packed;
3621
3622 struct mwl8k_cmd_bastream {
3623 struct mwl8k_cmd_pkt header;
3624 __le32 action;
3625 union {
3626 struct mwl8k_create_ba_stream create_params;
3627 struct mwl8k_destroy_ba_stream destroy_params;
3628 };
3629 } __packed;
3630
3631 static int
3632 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3633 {
3634 struct mwl8k_cmd_bastream *cmd;
3635 int rc;
3636
3637 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3638 if (cmd == NULL)
3639 return -ENOMEM;
3640
3641 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3642 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3643
3644 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3645
3646 cmd->create_params.queue_id = stream->idx;
3647 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3648 ETH_ALEN);
3649 cmd->create_params.tid = stream->tid;
3650
3651 cmd->create_params.flags =
3652 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3653 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3654
3655 rc = mwl8k_post_cmd(hw, &cmd->header);
3656
3657 kfree(cmd);
3658
3659 return rc;
3660 }
3661
3662 static int
3663 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3664 u8 buf_size)
3665 {
3666 struct mwl8k_cmd_bastream *cmd;
3667 int rc;
3668
3669 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3670 if (cmd == NULL)
3671 return -ENOMEM;
3672
3673
3674 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3675 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3676
3677 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3678
3679 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3680 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3681 cmd->create_params.queue_id = stream->idx;
3682
3683 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3684 cmd->create_params.tid = stream->tid;
3685 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3686 cmd->create_params.reset_seq_no_flag = 1;
3687
3688 cmd->create_params.param_info =
3689 (stream->sta->ht_cap.ampdu_factor &
3690 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3691 ((stream->sta->ht_cap.ampdu_density << 2) &
3692 IEEE80211_HT_AMPDU_PARM_DENSITY);
3693
3694 cmd->create_params.flags =
3695 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3696 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3697
3698 rc = mwl8k_post_cmd(hw, &cmd->header);
3699
3700 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3701 stream->sta->addr, stream->tid);
3702 kfree(cmd);
3703
3704 return rc;
3705 }
3706
3707 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3708 struct mwl8k_ampdu_stream *stream)
3709 {
3710 struct mwl8k_cmd_bastream *cmd;
3711
3712 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3713 if (cmd == NULL)
3714 return;
3715
3716 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3717 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3718 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3719
3720 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3721 mwl8k_post_cmd(hw, &cmd->header);
3722
3723 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3724
3725 kfree(cmd);
3726 }
3727
3728 /*
3729 * CMD_SET_NEW_STN.
3730 */
3731 struct mwl8k_cmd_set_new_stn {
3732 struct mwl8k_cmd_pkt header;
3733 __le16 aid;
3734 __u8 mac_addr[6];
3735 __le16 stn_id;
3736 __le16 action;
3737 __le16 rsvd;
3738 __le32 legacy_rates;
3739 __u8 ht_rates[4];
3740 __le16 cap_info;
3741 __le16 ht_capabilities_info;
3742 __u8 mac_ht_param_info;
3743 __u8 rev;
3744 __u8 control_channel;
3745 __u8 add_channel;
3746 __le16 op_mode;
3747 __le16 stbc;
3748 __u8 add_qos_info;
3749 __u8 is_qos_sta;
3750 __le32 fw_sta_ptr;
3751 } __packed;
3752
3753 #define MWL8K_STA_ACTION_ADD 0
3754 #define MWL8K_STA_ACTION_REMOVE 2
3755
3756 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3757 struct ieee80211_vif *vif,
3758 struct ieee80211_sta *sta)
3759 {
3760 struct mwl8k_cmd_set_new_stn *cmd;
3761 u32 rates;
3762 int rc;
3763
3764 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3765 if (cmd == NULL)
3766 return -ENOMEM;
3767
3768 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3769 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3770 cmd->aid = cpu_to_le16(sta->aid);
3771 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3772 cmd->stn_id = cpu_to_le16(sta->aid);
3773 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3774 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3775 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3776 else
3777 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3778 cmd->legacy_rates = cpu_to_le32(rates);
3779 if (sta->ht_cap.ht_supported) {
3780 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3781 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3782 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3783 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3784 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3785 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3786 ((sta->ht_cap.ampdu_density & 7) << 2);
3787 cmd->is_qos_sta = 1;
3788 }
3789
3790 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3791 kfree(cmd);
3792
3793 return rc;
3794 }
3795
3796 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3797 struct ieee80211_vif *vif)
3798 {
3799 struct mwl8k_cmd_set_new_stn *cmd;
3800 int rc;
3801
3802 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3803 if (cmd == NULL)
3804 return -ENOMEM;
3805
3806 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3807 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3808 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3809
3810 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3811 kfree(cmd);
3812
3813 return rc;
3814 }
3815
3816 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3817 struct ieee80211_vif *vif, u8 *addr)
3818 {
3819 struct mwl8k_cmd_set_new_stn *cmd;
3820 int rc;
3821
3822 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3823 if (cmd == NULL)
3824 return -ENOMEM;
3825
3826 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3827 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3828 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3829 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3830
3831 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3832 kfree(cmd);
3833
3834 return rc;
3835 }
3836
3837 /*
3838 * CMD_UPDATE_ENCRYPTION.
3839 */
3840
3841 #define MAX_ENCR_KEY_LENGTH 16
3842 #define MIC_KEY_LENGTH 8
3843
3844 struct mwl8k_cmd_update_encryption {
3845 struct mwl8k_cmd_pkt header;
3846
3847 __le32 action;
3848 __le32 reserved;
3849 __u8 mac_addr[6];
3850 __u8 encr_type;
3851
3852 } __packed;
3853
3854 struct mwl8k_cmd_set_key {
3855 struct mwl8k_cmd_pkt header;
3856
3857 __le32 action;
3858 __le32 reserved;
3859 __le16 length;
3860 __le16 key_type_id;
3861 __le32 key_info;
3862 __le32 key_id;
3863 __le16 key_len;
3864 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3865 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3866 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3867 __le16 tkip_rsc_low;
3868 __le32 tkip_rsc_high;
3869 __le16 tkip_tsc_low;
3870 __le32 tkip_tsc_high;
3871 __u8 mac_addr[6];
3872 } __packed;
3873
3874 enum {
3875 MWL8K_ENCR_ENABLE,
3876 MWL8K_ENCR_SET_KEY,
3877 MWL8K_ENCR_REMOVE_KEY,
3878 MWL8K_ENCR_SET_GROUP_KEY,
3879 };
3880
3881 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3882 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3883 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3884 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3885 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3886
3887 enum {
3888 MWL8K_ALG_WEP,
3889 MWL8K_ALG_TKIP,
3890 MWL8K_ALG_CCMP,
3891 };
3892
3893 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3894 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3895 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3896 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3897 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3898
3899 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3900 struct ieee80211_vif *vif,
3901 u8 *addr,
3902 u8 encr_type)
3903 {
3904 struct mwl8k_cmd_update_encryption *cmd;
3905 int rc;
3906
3907 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3908 if (cmd == NULL)
3909 return -ENOMEM;
3910
3911 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3912 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3913 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3914 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3915 cmd->encr_type = encr_type;
3916
3917 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3918 kfree(cmd);
3919
3920 return rc;
3921 }
3922
3923 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3924 u8 *addr,
3925 struct ieee80211_key_conf *key)
3926 {
3927 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3928 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3929 cmd->length = cpu_to_le16(sizeof(*cmd) -
3930 offsetof(struct mwl8k_cmd_set_key, length));
3931 cmd->key_id = cpu_to_le32(key->keyidx);
3932 cmd->key_len = cpu_to_le16(key->keylen);
3933 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3934
3935 switch (key->cipher) {
3936 case WLAN_CIPHER_SUITE_WEP40:
3937 case WLAN_CIPHER_SUITE_WEP104:
3938 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3939 if (key->keyidx == 0)
3940 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3941
3942 break;
3943 case WLAN_CIPHER_SUITE_TKIP:
3944 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3945 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3946 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3947 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3948 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3949 | MWL8K_KEY_FLAG_TSC_VALID);
3950 break;
3951 case WLAN_CIPHER_SUITE_CCMP:
3952 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3953 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3954 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3955 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3956 break;
3957 default:
3958 return -ENOTSUPP;
3959 }
3960
3961 return 0;
3962 }
3963
3964 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3965 struct ieee80211_vif *vif,
3966 u8 *addr,
3967 struct ieee80211_key_conf *key)
3968 {
3969 struct mwl8k_cmd_set_key *cmd;
3970 int rc;
3971 int keymlen;
3972 u32 action;
3973 u8 idx;
3974 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3975
3976 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3977 if (cmd == NULL)
3978 return -ENOMEM;
3979
3980 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3981 if (rc < 0)
3982 goto done;
3983
3984 idx = key->keyidx;
3985
3986 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3987 action = MWL8K_ENCR_SET_KEY;
3988 else
3989 action = MWL8K_ENCR_SET_GROUP_KEY;
3990
3991 switch (key->cipher) {
3992 case WLAN_CIPHER_SUITE_WEP40:
3993 case WLAN_CIPHER_SUITE_WEP104:
3994 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3995 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3996 sizeof(*key) + key->keylen);
3997 mwl8k_vif->wep_key_conf[idx].enabled = 1;
3998 }
3999
4000 keymlen = key->keylen;
4001 action = MWL8K_ENCR_SET_KEY;
4002 break;
4003 case WLAN_CIPHER_SUITE_TKIP:
4004 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4005 break;
4006 case WLAN_CIPHER_SUITE_CCMP:
4007 keymlen = key->keylen;
4008 break;
4009 default:
4010 rc = -ENOTSUPP;
4011 goto done;
4012 }
4013
4014 memcpy(cmd->key_material, key->key, keymlen);
4015 cmd->action = cpu_to_le32(action);
4016
4017 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4018 done:
4019 kfree(cmd);
4020
4021 return rc;
4022 }
4023
4024 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4025 struct ieee80211_vif *vif,
4026 u8 *addr,
4027 struct ieee80211_key_conf *key)
4028 {
4029 struct mwl8k_cmd_set_key *cmd;
4030 int rc;
4031 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4032
4033 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4034 if (cmd == NULL)
4035 return -ENOMEM;
4036
4037 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4038 if (rc < 0)
4039 goto done;
4040
4041 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4042 WLAN_CIPHER_SUITE_WEP104)
4043 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4044
4045 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4046
4047 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4048 done:
4049 kfree(cmd);
4050
4051 return rc;
4052 }
4053
4054 static int mwl8k_set_key(struct ieee80211_hw *hw,
4055 enum set_key_cmd cmd_param,
4056 struct ieee80211_vif *vif,
4057 struct ieee80211_sta *sta,
4058 struct ieee80211_key_conf *key)
4059 {
4060 int rc = 0;
4061 u8 encr_type;
4062 u8 *addr;
4063 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4064
4065 if (vif->type == NL80211_IFTYPE_STATION)
4066 return -EOPNOTSUPP;
4067
4068 if (sta == NULL)
4069 addr = hw->wiphy->perm_addr;
4070 else
4071 addr = sta->addr;
4072
4073 if (cmd_param == SET_KEY) {
4074 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
4075 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4076 if (rc)
4077 goto out;
4078
4079 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4080 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4081 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4082 else
4083 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4084
4085 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4086 encr_type);
4087 if (rc)
4088 goto out;
4089
4090 mwl8k_vif->is_hw_crypto_enabled = true;
4091
4092 } else {
4093 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4094
4095 if (rc)
4096 goto out;
4097
4098 mwl8k_vif->is_hw_crypto_enabled = false;
4099
4100 }
4101 out:
4102 return rc;
4103 }
4104
4105 /*
4106 * CMD_UPDATE_STADB.
4107 */
4108 struct ewc_ht_info {
4109 __le16 control1;
4110 __le16 control2;
4111 __le16 control3;
4112 } __packed;
4113
4114 struct peer_capability_info {
4115 /* Peer type - AP vs. STA. */
4116 __u8 peer_type;
4117
4118 /* Basic 802.11 capabilities from assoc resp. */
4119 __le16 basic_caps;
4120
4121 /* Set if peer supports 802.11n high throughput (HT). */
4122 __u8 ht_support;
4123
4124 /* Valid if HT is supported. */
4125 __le16 ht_caps;
4126 __u8 extended_ht_caps;
4127 struct ewc_ht_info ewc_info;
4128
4129 /* Legacy rate table. Intersection of our rates and peer rates. */
4130 __u8 legacy_rates[12];
4131
4132 /* HT rate table. Intersection of our rates and peer rates. */
4133 __u8 ht_rates[16];
4134 __u8 pad[16];
4135
4136 /* If set, interoperability mode, no proprietary extensions. */
4137 __u8 interop;
4138 __u8 pad2;
4139 __u8 station_id;
4140 __le16 amsdu_enabled;
4141 } __packed;
4142
4143 struct mwl8k_cmd_update_stadb {
4144 struct mwl8k_cmd_pkt header;
4145
4146 /* See STADB_ACTION_TYPE */
4147 __le32 action;
4148
4149 /* Peer MAC address */
4150 __u8 peer_addr[ETH_ALEN];
4151
4152 __le32 reserved;
4153
4154 /* Peer info - valid during add/update. */
4155 struct peer_capability_info peer_info;
4156 } __packed;
4157
4158 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4159 #define MWL8K_STA_DB_DEL_ENTRY 2
4160
4161 /* Peer Entry flags - used to define the type of the peer node */
4162 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4163
4164 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4165 struct ieee80211_vif *vif,
4166 struct ieee80211_sta *sta)
4167 {
4168 struct mwl8k_cmd_update_stadb *cmd;
4169 struct peer_capability_info *p;
4170 u32 rates;
4171 int rc;
4172
4173 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4174 if (cmd == NULL)
4175 return -ENOMEM;
4176
4177 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4178 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4179 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4180 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4181
4182 p = &cmd->peer_info;
4183 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4184 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4185 p->ht_support = sta->ht_cap.ht_supported;
4186 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4187 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4188 ((sta->ht_cap.ampdu_density & 7) << 2);
4189 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4190 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4191 else
4192 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4193 legacy_rate_mask_to_array(p->legacy_rates, rates);
4194 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4195 p->interop = 1;
4196 p->amsdu_enabled = 0;
4197
4198 rc = mwl8k_post_cmd(hw, &cmd->header);
4199 kfree(cmd);
4200
4201 return rc ? rc : p->station_id;
4202 }
4203
4204 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4205 struct ieee80211_vif *vif, u8 *addr)
4206 {
4207 struct mwl8k_cmd_update_stadb *cmd;
4208 int rc;
4209
4210 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4211 if (cmd == NULL)
4212 return -ENOMEM;
4213
4214 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4215 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4216 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4217 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4218
4219 rc = mwl8k_post_cmd(hw, &cmd->header);
4220 kfree(cmd);
4221
4222 return rc;
4223 }
4224
4225
4226 /*
4227 * Interrupt handling.
4228 */
4229 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4230 {
4231 struct ieee80211_hw *hw = dev_id;
4232 struct mwl8k_priv *priv = hw->priv;
4233 u32 status;
4234
4235 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4236 if (!status)
4237 return IRQ_NONE;
4238
4239 if (status & MWL8K_A2H_INT_TX_DONE) {
4240 status &= ~MWL8K_A2H_INT_TX_DONE;
4241 tasklet_schedule(&priv->poll_tx_task);
4242 }
4243
4244 if (status & MWL8K_A2H_INT_RX_READY) {
4245 status &= ~MWL8K_A2H_INT_RX_READY;
4246 tasklet_schedule(&priv->poll_rx_task);
4247 }
4248
4249 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4250 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4251 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4252 }
4253
4254 if (status)
4255 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4256
4257 if (status & MWL8K_A2H_INT_OPC_DONE) {
4258 if (priv->hostcmd_wait != NULL)
4259 complete(priv->hostcmd_wait);
4260 }
4261
4262 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4263 if (!mutex_is_locked(&priv->fw_mutex) &&
4264 priv->radio_on && priv->pending_tx_pkts)
4265 mwl8k_tx_start(priv);
4266 }
4267
4268 return IRQ_HANDLED;
4269 }
4270
4271 static void mwl8k_tx_poll(unsigned long data)
4272 {
4273 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4274 struct mwl8k_priv *priv = hw->priv;
4275 int limit;
4276 int i;
4277
4278 limit = 32;
4279
4280 spin_lock_bh(&priv->tx_lock);
4281
4282 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4283 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4284
4285 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4286 complete(priv->tx_wait);
4287 priv->tx_wait = NULL;
4288 }
4289
4290 spin_unlock_bh(&priv->tx_lock);
4291
4292 if (limit) {
4293 writel(~MWL8K_A2H_INT_TX_DONE,
4294 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4295 } else {
4296 tasklet_schedule(&priv->poll_tx_task);
4297 }
4298 }
4299
4300 static void mwl8k_rx_poll(unsigned long data)
4301 {
4302 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4303 struct mwl8k_priv *priv = hw->priv;
4304 int limit;
4305
4306 limit = 32;
4307 limit -= rxq_process(hw, 0, limit);
4308 limit -= rxq_refill(hw, 0, limit);
4309
4310 if (limit) {
4311 writel(~MWL8K_A2H_INT_RX_READY,
4312 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4313 } else {
4314 tasklet_schedule(&priv->poll_rx_task);
4315 }
4316 }
4317
4318
4319 /*
4320 * Core driver operations.
4321 */
4322 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4323 {
4324 struct mwl8k_priv *priv = hw->priv;
4325 int index = skb_get_queue_mapping(skb);
4326
4327 if (!priv->radio_on) {
4328 wiphy_debug(hw->wiphy,
4329 "dropped TX frame since radio disabled\n");
4330 dev_kfree_skb(skb);
4331 return;
4332 }
4333
4334 mwl8k_txq_xmit(hw, index, skb);
4335 }
4336
4337 static int mwl8k_start(struct ieee80211_hw *hw)
4338 {
4339 struct mwl8k_priv *priv = hw->priv;
4340 int rc;
4341
4342 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4343 IRQF_SHARED, MWL8K_NAME, hw);
4344 if (rc) {
4345 priv->irq = -1;
4346 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4347 return -EIO;
4348 }
4349 priv->irq = priv->pdev->irq;
4350
4351 /* Enable TX reclaim and RX tasklets. */
4352 tasklet_enable(&priv->poll_tx_task);
4353 tasklet_enable(&priv->poll_rx_task);
4354
4355 /* Enable interrupts */
4356 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4357 iowrite32(MWL8K_A2H_EVENTS,
4358 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4359
4360 rc = mwl8k_fw_lock(hw);
4361 if (!rc) {
4362 rc = mwl8k_cmd_radio_enable(hw);
4363
4364 if (!priv->ap_fw) {
4365 if (!rc)
4366 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4367
4368 if (!rc)
4369 rc = mwl8k_cmd_set_pre_scan(hw);
4370
4371 if (!rc)
4372 rc = mwl8k_cmd_set_post_scan(hw,
4373 "\x00\x00\x00\x00\x00\x00");
4374 }
4375
4376 if (!rc)
4377 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4378
4379 if (!rc)
4380 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4381
4382 mwl8k_fw_unlock(hw);
4383 }
4384
4385 if (rc) {
4386 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4387 free_irq(priv->pdev->irq, hw);
4388 priv->irq = -1;
4389 tasklet_disable(&priv->poll_tx_task);
4390 tasklet_disable(&priv->poll_rx_task);
4391 }
4392
4393 return rc;
4394 }
4395
4396 static void mwl8k_stop(struct ieee80211_hw *hw)
4397 {
4398 struct mwl8k_priv *priv = hw->priv;
4399 int i;
4400
4401 mwl8k_cmd_radio_disable(hw);
4402
4403 ieee80211_stop_queues(hw);
4404
4405 /* Disable interrupts */
4406 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4407 if (priv->irq != -1) {
4408 free_irq(priv->pdev->irq, hw);
4409 priv->irq = -1;
4410 }
4411
4412 /* Stop finalize join worker */
4413 cancel_work_sync(&priv->finalize_join_worker);
4414 cancel_work_sync(&priv->watchdog_ba_handle);
4415 if (priv->beacon_skb != NULL)
4416 dev_kfree_skb(priv->beacon_skb);
4417
4418 /* Stop TX reclaim and RX tasklets. */
4419 tasklet_disable(&priv->poll_tx_task);
4420 tasklet_disable(&priv->poll_rx_task);
4421
4422 /* Return all skbs to mac80211 */
4423 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4424 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4425 }
4426
4427 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4428
4429 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4430 struct ieee80211_vif *vif)
4431 {
4432 struct mwl8k_priv *priv = hw->priv;
4433 struct mwl8k_vif *mwl8k_vif;
4434 u32 macids_supported;
4435 int macid, rc;
4436 struct mwl8k_device_info *di;
4437
4438 /*
4439 * Reject interface creation if sniffer mode is active, as
4440 * STA operation is mutually exclusive with hardware sniffer
4441 * mode. (Sniffer mode is only used on STA firmware.)
4442 */
4443 if (priv->sniffer_enabled) {
4444 wiphy_info(hw->wiphy,
4445 "unable to create STA interface because sniffer mode is enabled\n");
4446 return -EINVAL;
4447 }
4448
4449 di = priv->device_info;
4450 switch (vif->type) {
4451 case NL80211_IFTYPE_AP:
4452 if (!priv->ap_fw && di->fw_image_ap) {
4453 /* we must load the ap fw to meet this request */
4454 if (!list_empty(&priv->vif_list))
4455 return -EBUSY;
4456 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4457 if (rc)
4458 return rc;
4459 }
4460 macids_supported = priv->ap_macids_supported;
4461 break;
4462 case NL80211_IFTYPE_STATION:
4463 if (priv->ap_fw && di->fw_image_sta) {
4464 /* we must load the sta fw to meet this request */
4465 if (!list_empty(&priv->vif_list))
4466 return -EBUSY;
4467 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4468 if (rc)
4469 return rc;
4470 }
4471 macids_supported = priv->sta_macids_supported;
4472 break;
4473 default:
4474 return -EINVAL;
4475 }
4476
4477 macid = ffs(macids_supported & ~priv->macids_used);
4478 if (!macid--)
4479 return -EBUSY;
4480
4481 /* Setup driver private area. */
4482 mwl8k_vif = MWL8K_VIF(vif);
4483 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4484 mwl8k_vif->vif = vif;
4485 mwl8k_vif->macid = macid;
4486 mwl8k_vif->seqno = 0;
4487 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4488 mwl8k_vif->is_hw_crypto_enabled = false;
4489
4490 /* Set the mac address. */
4491 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4492
4493 if (priv->ap_fw)
4494 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4495
4496 priv->macids_used |= 1 << mwl8k_vif->macid;
4497 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4498
4499 return 0;
4500 }
4501
4502 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4503 struct ieee80211_vif *vif)
4504 {
4505 struct mwl8k_priv *priv = hw->priv;
4506 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4507
4508 if (priv->ap_fw)
4509 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4510
4511 mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4512
4513 priv->macids_used &= ~(1 << mwl8k_vif->macid);
4514 list_del(&mwl8k_vif->list);
4515 }
4516
4517 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4518 {
4519 struct ieee80211_conf *conf = &hw->conf;
4520 struct mwl8k_priv *priv = hw->priv;
4521 int rc;
4522
4523 if (conf->flags & IEEE80211_CONF_IDLE) {
4524 mwl8k_cmd_radio_disable(hw);
4525 return 0;
4526 }
4527
4528 rc = mwl8k_fw_lock(hw);
4529 if (rc)
4530 return rc;
4531
4532 rc = mwl8k_cmd_radio_enable(hw);
4533 if (rc)
4534 goto out;
4535
4536 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4537 if (rc)
4538 goto out;
4539
4540 if (conf->power_level > 18)
4541 conf->power_level = 18;
4542
4543 if (priv->ap_fw) {
4544
4545 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4546 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4547 if (rc)
4548 goto out;
4549 }
4550
4551 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4552 if (rc)
4553 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4554 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4555 if (rc)
4556 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4557
4558 } else {
4559 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4560 if (rc)
4561 goto out;
4562 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4563 }
4564
4565 out:
4566 mwl8k_fw_unlock(hw);
4567
4568 return rc;
4569 }
4570
4571 static void
4572 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4573 struct ieee80211_bss_conf *info, u32 changed)
4574 {
4575 struct mwl8k_priv *priv = hw->priv;
4576 u32 ap_legacy_rates = 0;
4577 u8 ap_mcs_rates[16];
4578 int rc;
4579
4580 if (mwl8k_fw_lock(hw))
4581 return;
4582
4583 /*
4584 * No need to capture a beacon if we're no longer associated.
4585 */
4586 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4587 priv->capture_beacon = false;
4588
4589 /*
4590 * Get the AP's legacy and MCS rates.
4591 */
4592 if (vif->bss_conf.assoc) {
4593 struct ieee80211_sta *ap;
4594
4595 rcu_read_lock();
4596
4597 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4598 if (ap == NULL) {
4599 rcu_read_unlock();
4600 goto out;
4601 }
4602
4603 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4604 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4605 } else {
4606 ap_legacy_rates =
4607 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4608 }
4609 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4610
4611 rcu_read_unlock();
4612 }
4613
4614 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4615 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4616 if (rc)
4617 goto out;
4618
4619 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4620 if (rc)
4621 goto out;
4622 }
4623
4624 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4625 rc = mwl8k_set_radio_preamble(hw,
4626 vif->bss_conf.use_short_preamble);
4627 if (rc)
4628 goto out;
4629 }
4630
4631 if (changed & BSS_CHANGED_ERP_SLOT) {
4632 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4633 if (rc)
4634 goto out;
4635 }
4636
4637 if (vif->bss_conf.assoc &&
4638 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4639 BSS_CHANGED_HT))) {
4640 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4641 if (rc)
4642 goto out;
4643 }
4644
4645 if (vif->bss_conf.assoc &&
4646 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4647 /*
4648 * Finalize the join. Tell rx handler to process
4649 * next beacon from our BSSID.
4650 */
4651 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4652 priv->capture_beacon = true;
4653 }
4654
4655 out:
4656 mwl8k_fw_unlock(hw);
4657 }
4658
4659 static void
4660 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4661 struct ieee80211_bss_conf *info, u32 changed)
4662 {
4663 int rc;
4664
4665 if (mwl8k_fw_lock(hw))
4666 return;
4667
4668 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4669 rc = mwl8k_set_radio_preamble(hw,
4670 vif->bss_conf.use_short_preamble);
4671 if (rc)
4672 goto out;
4673 }
4674
4675 if (changed & BSS_CHANGED_BASIC_RATES) {
4676 int idx;
4677 int rate;
4678
4679 /*
4680 * Use lowest supported basic rate for multicasts
4681 * and management frames (such as probe responses --
4682 * beacons will always go out at 1 Mb/s).
4683 */
4684 idx = ffs(vif->bss_conf.basic_rates);
4685 if (idx)
4686 idx--;
4687
4688 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4689 rate = mwl8k_rates_24[idx].hw_value;
4690 else
4691 rate = mwl8k_rates_50[idx].hw_value;
4692
4693 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4694 }
4695
4696 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4697 struct sk_buff *skb;
4698
4699 skb = ieee80211_beacon_get(hw, vif);
4700 if (skb != NULL) {
4701 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4702 kfree_skb(skb);
4703 }
4704 }
4705
4706 if (changed & BSS_CHANGED_BEACON_ENABLED)
4707 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4708
4709 out:
4710 mwl8k_fw_unlock(hw);
4711 }
4712
4713 static void
4714 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4715 struct ieee80211_bss_conf *info, u32 changed)
4716 {
4717 struct mwl8k_priv *priv = hw->priv;
4718
4719 if (!priv->ap_fw)
4720 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4721 else
4722 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4723 }
4724
4725 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4726 struct netdev_hw_addr_list *mc_list)
4727 {
4728 struct mwl8k_cmd_pkt *cmd;
4729
4730 /*
4731 * Synthesize and return a command packet that programs the
4732 * hardware multicast address filter. At this point we don't
4733 * know whether FIF_ALLMULTI is being requested, but if it is,
4734 * we'll end up throwing this packet away and creating a new
4735 * one in mwl8k_configure_filter().
4736 */
4737 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4738
4739 return (unsigned long)cmd;
4740 }
4741
4742 static int
4743 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4744 unsigned int changed_flags,
4745 unsigned int *total_flags)
4746 {
4747 struct mwl8k_priv *priv = hw->priv;
4748
4749 /*
4750 * Hardware sniffer mode is mutually exclusive with STA
4751 * operation, so refuse to enable sniffer mode if a STA
4752 * interface is active.
4753 */
4754 if (!list_empty(&priv->vif_list)) {
4755 if (net_ratelimit())
4756 wiphy_info(hw->wiphy,
4757 "not enabling sniffer mode because STA interface is active\n");
4758 return 0;
4759 }
4760
4761 if (!priv->sniffer_enabled) {
4762 if (mwl8k_cmd_enable_sniffer(hw, 1))
4763 return 0;
4764 priv->sniffer_enabled = true;
4765 }
4766
4767 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4768 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4769 FIF_OTHER_BSS;
4770
4771 return 1;
4772 }
4773
4774 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4775 {
4776 if (!list_empty(&priv->vif_list))
4777 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4778
4779 return NULL;
4780 }
4781
4782 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4783 unsigned int changed_flags,
4784 unsigned int *total_flags,
4785 u64 multicast)
4786 {
4787 struct mwl8k_priv *priv = hw->priv;
4788 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4789
4790 /*
4791 * AP firmware doesn't allow fine-grained control over
4792 * the receive filter.
4793 */
4794 if (priv->ap_fw) {
4795 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4796 kfree(cmd);
4797 return;
4798 }
4799
4800 /*
4801 * Enable hardware sniffer mode if FIF_CONTROL or
4802 * FIF_OTHER_BSS is requested.
4803 */
4804 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4805 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4806 kfree(cmd);
4807 return;
4808 }
4809
4810 /* Clear unsupported feature flags */
4811 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4812
4813 if (mwl8k_fw_lock(hw)) {
4814 kfree(cmd);
4815 return;
4816 }
4817
4818 if (priv->sniffer_enabled) {
4819 mwl8k_cmd_enable_sniffer(hw, 0);
4820 priv->sniffer_enabled = false;
4821 }
4822
4823 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4824 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4825 /*
4826 * Disable the BSS filter.
4827 */
4828 mwl8k_cmd_set_pre_scan(hw);
4829 } else {
4830 struct mwl8k_vif *mwl8k_vif;
4831 const u8 *bssid;
4832
4833 /*
4834 * Enable the BSS filter.
4835 *
4836 * If there is an active STA interface, use that
4837 * interface's BSSID, otherwise use a dummy one
4838 * (where the OUI part needs to be nonzero for
4839 * the BSSID to be accepted by POST_SCAN).
4840 */
4841 mwl8k_vif = mwl8k_first_vif(priv);
4842 if (mwl8k_vif != NULL)
4843 bssid = mwl8k_vif->vif->bss_conf.bssid;
4844 else
4845 bssid = "\x01\x00\x00\x00\x00\x00";
4846
4847 mwl8k_cmd_set_post_scan(hw, bssid);
4848 }
4849 }
4850
4851 /*
4852 * If FIF_ALLMULTI is being requested, throw away the command
4853 * packet that ->prepare_multicast() built and replace it with
4854 * a command packet that enables reception of all multicast
4855 * packets.
4856 */
4857 if (*total_flags & FIF_ALLMULTI) {
4858 kfree(cmd);
4859 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4860 }
4861
4862 if (cmd != NULL) {
4863 mwl8k_post_cmd(hw, cmd);
4864 kfree(cmd);
4865 }
4866
4867 mwl8k_fw_unlock(hw);
4868 }
4869
4870 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4871 {
4872 return mwl8k_cmd_set_rts_threshold(hw, value);
4873 }
4874
4875 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4876 struct ieee80211_vif *vif,
4877 struct ieee80211_sta *sta)
4878 {
4879 struct mwl8k_priv *priv = hw->priv;
4880
4881 if (priv->ap_fw)
4882 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4883 else
4884 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4885 }
4886
4887 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4888 struct ieee80211_vif *vif,
4889 struct ieee80211_sta *sta)
4890 {
4891 struct mwl8k_priv *priv = hw->priv;
4892 int ret;
4893 int i;
4894 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4895 struct ieee80211_key_conf *key;
4896
4897 if (!priv->ap_fw) {
4898 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4899 if (ret >= 0) {
4900 MWL8K_STA(sta)->peer_id = ret;
4901 if (sta->ht_cap.ht_supported)
4902 MWL8K_STA(sta)->is_ampdu_allowed = true;
4903 ret = 0;
4904 }
4905
4906 } else {
4907 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4908 }
4909
4910 for (i = 0; i < NUM_WEP_KEYS; i++) {
4911 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4912 if (mwl8k_vif->wep_key_conf[i].enabled)
4913 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4914 }
4915 return ret;
4916 }
4917
4918 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4919 const struct ieee80211_tx_queue_params *params)
4920 {
4921 struct mwl8k_priv *priv = hw->priv;
4922 int rc;
4923
4924 rc = mwl8k_fw_lock(hw);
4925 if (!rc) {
4926 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4927 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4928
4929 if (!priv->wmm_enabled)
4930 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4931
4932 if (!rc) {
4933 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4934 rc = mwl8k_cmd_set_edca_params(hw, q,
4935 params->cw_min,
4936 params->cw_max,
4937 params->aifs,
4938 params->txop);
4939 }
4940
4941 mwl8k_fw_unlock(hw);
4942 }
4943
4944 return rc;
4945 }
4946
4947 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4948 struct ieee80211_low_level_stats *stats)
4949 {
4950 return mwl8k_cmd_get_stat(hw, stats);
4951 }
4952
4953 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4954 struct survey_info *survey)
4955 {
4956 struct mwl8k_priv *priv = hw->priv;
4957 struct ieee80211_conf *conf = &hw->conf;
4958
4959 if (idx != 0)
4960 return -ENOENT;
4961
4962 survey->channel = conf->channel;
4963 survey->filled = SURVEY_INFO_NOISE_DBM;
4964 survey->noise = priv->noise;
4965
4966 return 0;
4967 }
4968
4969 #define MAX_AMPDU_ATTEMPTS 5
4970
4971 static int
4972 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4973 enum ieee80211_ampdu_mlme_action action,
4974 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4975 u8 buf_size)
4976 {
4977
4978 int i, rc = 0;
4979 struct mwl8k_priv *priv = hw->priv;
4980 struct mwl8k_ampdu_stream *stream;
4981 u8 *addr = sta->addr;
4982
4983 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4984 return -ENOTSUPP;
4985
4986 spin_lock(&priv->stream_lock);
4987 stream = mwl8k_lookup_stream(hw, addr, tid);
4988
4989 switch (action) {
4990 case IEEE80211_AMPDU_RX_START:
4991 case IEEE80211_AMPDU_RX_STOP:
4992 break;
4993 case IEEE80211_AMPDU_TX_START:
4994 /* By the time we get here the hw queues may contain outgoing
4995 * packets for this RA/TID that are not part of this BA
4996 * session. The hw will assign sequence numbers to these
4997 * packets as they go out. So if we query the hw for its next
4998 * sequence number and use that for the SSN here, it may end up
4999 * being wrong, which will lead to sequence number mismatch at
5000 * the recipient. To avoid this, we reset the sequence number
5001 * to O for the first MPDU in this BA stream.
5002 */
5003 *ssn = 0;
5004 if (stream == NULL) {
5005 /* This means that somebody outside this driver called
5006 * ieee80211_start_tx_ba_session. This is unexpected
5007 * because we do our own rate control. Just warn and
5008 * move on.
5009 */
5010 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5011 "Proceeding anyway.\n", __func__);
5012 stream = mwl8k_add_stream(hw, sta, tid);
5013 }
5014 if (stream == NULL) {
5015 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5016 rc = -EBUSY;
5017 break;
5018 }
5019 stream->state = AMPDU_STREAM_IN_PROGRESS;
5020
5021 /* Release the lock before we do the time consuming stuff */
5022 spin_unlock(&priv->stream_lock);
5023 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5024 rc = mwl8k_check_ba(hw, stream);
5025
5026 if (!rc)
5027 break;
5028 /*
5029 * HW queues take time to be flushed, give them
5030 * sufficient time
5031 */
5032
5033 msleep(1000);
5034 }
5035 spin_lock(&priv->stream_lock);
5036 if (rc) {
5037 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5038 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5039 mwl8k_remove_stream(hw, stream);
5040 rc = -EBUSY;
5041 break;
5042 }
5043 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5044 break;
5045 case IEEE80211_AMPDU_TX_STOP:
5046 if (stream == NULL)
5047 break;
5048 if (stream->state == AMPDU_STREAM_ACTIVE) {
5049 spin_unlock(&priv->stream_lock);
5050 mwl8k_destroy_ba(hw, stream);
5051 spin_lock(&priv->stream_lock);
5052 }
5053 mwl8k_remove_stream(hw, stream);
5054 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5055 break;
5056 case IEEE80211_AMPDU_TX_OPERATIONAL:
5057 BUG_ON(stream == NULL);
5058 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5059 spin_unlock(&priv->stream_lock);
5060 rc = mwl8k_create_ba(hw, stream, buf_size);
5061 spin_lock(&priv->stream_lock);
5062 if (!rc)
5063 stream->state = AMPDU_STREAM_ACTIVE;
5064 else {
5065 spin_unlock(&priv->stream_lock);
5066 mwl8k_destroy_ba(hw, stream);
5067 spin_lock(&priv->stream_lock);
5068 wiphy_debug(hw->wiphy,
5069 "Failed adding stream for sta %pM tid %d\n",
5070 addr, tid);
5071 mwl8k_remove_stream(hw, stream);
5072 }
5073 break;
5074
5075 default:
5076 rc = -ENOTSUPP;
5077 }
5078
5079 spin_unlock(&priv->stream_lock);
5080 return rc;
5081 }
5082
5083 static const struct ieee80211_ops mwl8k_ops = {
5084 .tx = mwl8k_tx,
5085 .start = mwl8k_start,
5086 .stop = mwl8k_stop,
5087 .add_interface = mwl8k_add_interface,
5088 .remove_interface = mwl8k_remove_interface,
5089 .config = mwl8k_config,
5090 .bss_info_changed = mwl8k_bss_info_changed,
5091 .prepare_multicast = mwl8k_prepare_multicast,
5092 .configure_filter = mwl8k_configure_filter,
5093 .set_key = mwl8k_set_key,
5094 .set_rts_threshold = mwl8k_set_rts_threshold,
5095 .sta_add = mwl8k_sta_add,
5096 .sta_remove = mwl8k_sta_remove,
5097 .conf_tx = mwl8k_conf_tx,
5098 .get_stats = mwl8k_get_stats,
5099 .get_survey = mwl8k_get_survey,
5100 .ampdu_action = mwl8k_ampdu_action,
5101 };
5102
5103 static void mwl8k_finalize_join_worker(struct work_struct *work)
5104 {
5105 struct mwl8k_priv *priv =
5106 container_of(work, struct mwl8k_priv, finalize_join_worker);
5107 struct sk_buff *skb = priv->beacon_skb;
5108 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5109 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5110 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5111 mgmt->u.beacon.variable, len);
5112 int dtim_period = 1;
5113
5114 if (tim && tim[1] >= 2)
5115 dtim_period = tim[3];
5116
5117 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5118
5119 dev_kfree_skb(skb);
5120 priv->beacon_skb = NULL;
5121 }
5122
5123 enum {
5124 MWL8363 = 0,
5125 MWL8687,
5126 MWL8366,
5127 };
5128
5129 #define MWL8K_8366_AP_FW_API 2
5130 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5131 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5132
5133 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5134 [MWL8363] = {
5135 .part_name = "88w8363",
5136 .helper_image = "mwl8k/helper_8363.fw",
5137 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5138 },
5139 [MWL8687] = {
5140 .part_name = "88w8687",
5141 .helper_image = "mwl8k/helper_8687.fw",
5142 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5143 },
5144 [MWL8366] = {
5145 .part_name = "88w8366",
5146 .helper_image = "mwl8k/helper_8366.fw",
5147 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5148 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5149 .fw_api_ap = MWL8K_8366_AP_FW_API,
5150 .ap_rxd_ops = &rxd_8366_ap_ops,
5151 },
5152 };
5153
5154 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5155 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5156 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5157 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5158 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5159 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5160 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5161
5162 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5163 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5164 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5165 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5166 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5167 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5168 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5169 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5170 { },
5171 };
5172 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5173
5174 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5175 {
5176 int rc;
5177 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5178 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5179 priv->fw_pref, priv->fw_alt);
5180 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5181 if (rc) {
5182 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5183 pci_name(priv->pdev), priv->fw_alt);
5184 return rc;
5185 }
5186 return 0;
5187 }
5188
5189 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5190 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5191 {
5192 struct mwl8k_priv *priv = context;
5193 struct mwl8k_device_info *di = priv->device_info;
5194 int rc;
5195
5196 switch (priv->fw_state) {
5197 case FW_STATE_INIT:
5198 if (!fw) {
5199 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5200 pci_name(priv->pdev), di->helper_image);
5201 goto fail;
5202 }
5203 priv->fw_helper = fw;
5204 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5205 true);
5206 if (rc && priv->fw_alt) {
5207 rc = mwl8k_request_alt_fw(priv);
5208 if (rc)
5209 goto fail;
5210 priv->fw_state = FW_STATE_LOADING_ALT;
5211 } else if (rc)
5212 goto fail;
5213 else
5214 priv->fw_state = FW_STATE_LOADING_PREF;
5215 break;
5216
5217 case FW_STATE_LOADING_PREF:
5218 if (!fw) {
5219 if (priv->fw_alt) {
5220 rc = mwl8k_request_alt_fw(priv);
5221 if (rc)
5222 goto fail;
5223 priv->fw_state = FW_STATE_LOADING_ALT;
5224 } else
5225 goto fail;
5226 } else {
5227 priv->fw_ucode = fw;
5228 rc = mwl8k_firmware_load_success(priv);
5229 if (rc)
5230 goto fail;
5231 else
5232 complete(&priv->firmware_loading_complete);
5233 }
5234 break;
5235
5236 case FW_STATE_LOADING_ALT:
5237 if (!fw) {
5238 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5239 pci_name(priv->pdev), di->helper_image);
5240 goto fail;
5241 }
5242 priv->fw_ucode = fw;
5243 rc = mwl8k_firmware_load_success(priv);
5244 if (rc)
5245 goto fail;
5246 else
5247 complete(&priv->firmware_loading_complete);
5248 break;
5249
5250 default:
5251 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5252 MWL8K_NAME, priv->fw_state);
5253 BUG_ON(1);
5254 }
5255
5256 return;
5257
5258 fail:
5259 priv->fw_state = FW_STATE_ERROR;
5260 complete(&priv->firmware_loading_complete);
5261 device_release_driver(&priv->pdev->dev);
5262 mwl8k_release_firmware(priv);
5263 }
5264
5265 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5266 bool nowait)
5267 {
5268 struct mwl8k_priv *priv = hw->priv;
5269 int rc;
5270
5271 /* Reset firmware and hardware */
5272 mwl8k_hw_reset(priv);
5273
5274 /* Ask userland hotplug daemon for the device firmware */
5275 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5276 if (rc) {
5277 wiphy_err(hw->wiphy, "Firmware files not found\n");
5278 return rc;
5279 }
5280
5281 if (nowait)
5282 return rc;
5283
5284 /* Load firmware into hardware */
5285 rc = mwl8k_load_firmware(hw);
5286 if (rc)
5287 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5288
5289 /* Reclaim memory once firmware is successfully loaded */
5290 mwl8k_release_firmware(priv);
5291
5292 return rc;
5293 }
5294
5295 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5296 {
5297 struct mwl8k_priv *priv = hw->priv;
5298 int rc = 0;
5299 int i;
5300
5301 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5302 rc = mwl8k_txq_init(hw, i);
5303 if (rc)
5304 break;
5305 if (priv->ap_fw)
5306 iowrite32(priv->txq[i].txd_dma,
5307 priv->sram + priv->txq_offset[i]);
5308 }
5309 return rc;
5310 }
5311
5312 /* initialize hw after successfully loading a firmware image */
5313 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5314 {
5315 struct mwl8k_priv *priv = hw->priv;
5316 int rc = 0;
5317 int i;
5318
5319 if (priv->ap_fw) {
5320 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5321 if (priv->rxd_ops == NULL) {
5322 wiphy_err(hw->wiphy,
5323 "Driver does not have AP firmware image support for this hardware\n");
5324 goto err_stop_firmware;
5325 }
5326 } else {
5327 priv->rxd_ops = &rxd_sta_ops;
5328 }
5329
5330 priv->sniffer_enabled = false;
5331 priv->wmm_enabled = false;
5332 priv->pending_tx_pkts = 0;
5333
5334 rc = mwl8k_rxq_init(hw, 0);
5335 if (rc)
5336 goto err_stop_firmware;
5337 rxq_refill(hw, 0, INT_MAX);
5338
5339 /* For the sta firmware, we need to know the dma addresses of tx queues
5340 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5341 * prior to issuing this command. But for the AP case, we learn the
5342 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5343 * case we must initialize the tx queues after.
5344 */
5345 priv->num_ampdu_queues = 0;
5346 if (!priv->ap_fw) {
5347 rc = mwl8k_init_txqs(hw);
5348 if (rc)
5349 goto err_free_queues;
5350 }
5351
5352 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5353 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5354 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5355 MWL8K_A2H_INT_BA_WATCHDOG,
5356 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5357 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5358 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5359
5360 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5361 IRQF_SHARED, MWL8K_NAME, hw);
5362 if (rc) {
5363 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5364 goto err_free_queues;
5365 }
5366
5367 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5368
5369 /*
5370 * Temporarily enable interrupts. Initial firmware host
5371 * commands use interrupts and avoid polling. Disable
5372 * interrupts when done.
5373 */
5374 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5375
5376 /* Get config data, mac addrs etc */
5377 if (priv->ap_fw) {
5378 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5379 if (!rc)
5380 rc = mwl8k_init_txqs(hw);
5381 if (!rc)
5382 rc = mwl8k_cmd_set_hw_spec(hw);
5383 } else {
5384 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5385 }
5386 if (rc) {
5387 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5388 goto err_free_irq;
5389 }
5390
5391 /* Turn radio off */
5392 rc = mwl8k_cmd_radio_disable(hw);
5393 if (rc) {
5394 wiphy_err(hw->wiphy, "Cannot disable\n");
5395 goto err_free_irq;
5396 }
5397
5398 /* Clear MAC address */
5399 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5400 if (rc) {
5401 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5402 goto err_free_irq;
5403 }
5404
5405 /* Disable interrupts */
5406 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5407 free_irq(priv->pdev->irq, hw);
5408
5409 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5410 priv->device_info->part_name,
5411 priv->hw_rev, hw->wiphy->perm_addr,
5412 priv->ap_fw ? "AP" : "STA",
5413 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5414 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5415
5416 return 0;
5417
5418 err_free_irq:
5419 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5420 free_irq(priv->pdev->irq, hw);
5421
5422 err_free_queues:
5423 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5424 mwl8k_txq_deinit(hw, i);
5425 mwl8k_rxq_deinit(hw, 0);
5426
5427 err_stop_firmware:
5428 mwl8k_hw_reset(priv);
5429
5430 return rc;
5431 }
5432
5433 /*
5434 * invoke mwl8k_reload_firmware to change the firmware image after the device
5435 * has already been registered
5436 */
5437 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5438 {
5439 int i, rc = 0;
5440 struct mwl8k_priv *priv = hw->priv;
5441
5442 mwl8k_stop(hw);
5443 mwl8k_rxq_deinit(hw, 0);
5444
5445 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5446 mwl8k_txq_deinit(hw, i);
5447
5448 rc = mwl8k_init_firmware(hw, fw_image, false);
5449 if (rc)
5450 goto fail;
5451
5452 rc = mwl8k_probe_hw(hw);
5453 if (rc)
5454 goto fail;
5455
5456 rc = mwl8k_start(hw);
5457 if (rc)
5458 goto fail;
5459
5460 rc = mwl8k_config(hw, ~0);
5461 if (rc)
5462 goto fail;
5463
5464 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5465 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
5466 if (rc)
5467 goto fail;
5468 }
5469
5470 return rc;
5471
5472 fail:
5473 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5474 return rc;
5475 }
5476
5477 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5478 {
5479 struct ieee80211_hw *hw = priv->hw;
5480 int i, rc;
5481
5482 rc = mwl8k_load_firmware(hw);
5483 mwl8k_release_firmware(priv);
5484 if (rc) {
5485 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5486 return rc;
5487 }
5488
5489 /*
5490 * Extra headroom is the size of the required DMA header
5491 * minus the size of the smallest 802.11 frame (CTS frame).
5492 */
5493 hw->extra_tx_headroom =
5494 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5495
5496 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5497
5498 hw->channel_change_time = 10;
5499
5500 hw->queues = MWL8K_TX_WMM_QUEUES;
5501
5502 /* Set rssi values to dBm */
5503 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5504 hw->vif_data_size = sizeof(struct mwl8k_vif);
5505 hw->sta_data_size = sizeof(struct mwl8k_sta);
5506
5507 priv->macids_used = 0;
5508 INIT_LIST_HEAD(&priv->vif_list);
5509
5510 /* Set default radio state and preamble */
5511 priv->radio_on = 0;
5512 priv->radio_short_preamble = 0;
5513
5514 /* Finalize join worker */
5515 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5516 /* Handle watchdog ba events */
5517 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5518
5519 /* TX reclaim and RX tasklets. */
5520 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5521 tasklet_disable(&priv->poll_tx_task);
5522 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5523 tasklet_disable(&priv->poll_rx_task);
5524
5525 /* Power management cookie */
5526 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5527 if (priv->cookie == NULL)
5528 return -ENOMEM;
5529
5530 mutex_init(&priv->fw_mutex);
5531 priv->fw_mutex_owner = NULL;
5532 priv->fw_mutex_depth = 0;
5533 priv->hostcmd_wait = NULL;
5534
5535 spin_lock_init(&priv->tx_lock);
5536
5537 spin_lock_init(&priv->stream_lock);
5538
5539 priv->tx_wait = NULL;
5540
5541 rc = mwl8k_probe_hw(hw);
5542 if (rc)
5543 goto err_free_cookie;
5544
5545 hw->wiphy->interface_modes = 0;
5546 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5547 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5548 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5549 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5550
5551 rc = ieee80211_register_hw(hw);
5552 if (rc) {
5553 wiphy_err(hw->wiphy, "Cannot register device\n");
5554 goto err_unprobe_hw;
5555 }
5556
5557 return 0;
5558
5559 err_unprobe_hw:
5560 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5561 mwl8k_txq_deinit(hw, i);
5562 mwl8k_rxq_deinit(hw, 0);
5563
5564 err_free_cookie:
5565 if (priv->cookie != NULL)
5566 pci_free_consistent(priv->pdev, 4,
5567 priv->cookie, priv->cookie_dma);
5568
5569 return rc;
5570 }
5571 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5572 const struct pci_device_id *id)
5573 {
5574 static int printed_version;
5575 struct ieee80211_hw *hw;
5576 struct mwl8k_priv *priv;
5577 struct mwl8k_device_info *di;
5578 int rc;
5579
5580 if (!printed_version) {
5581 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5582 printed_version = 1;
5583 }
5584
5585
5586 rc = pci_enable_device(pdev);
5587 if (rc) {
5588 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5589 MWL8K_NAME);
5590 return rc;
5591 }
5592
5593 rc = pci_request_regions(pdev, MWL8K_NAME);
5594 if (rc) {
5595 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5596 MWL8K_NAME);
5597 goto err_disable_device;
5598 }
5599
5600 pci_set_master(pdev);
5601
5602
5603 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5604 if (hw == NULL) {
5605 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5606 rc = -ENOMEM;
5607 goto err_free_reg;
5608 }
5609
5610 SET_IEEE80211_DEV(hw, &pdev->dev);
5611 pci_set_drvdata(pdev, hw);
5612
5613 priv = hw->priv;
5614 priv->hw = hw;
5615 priv->pdev = pdev;
5616 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5617
5618
5619 priv->sram = pci_iomap(pdev, 0, 0x10000);
5620 if (priv->sram == NULL) {
5621 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5622 goto err_iounmap;
5623 }
5624
5625 /*
5626 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5627 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5628 */
5629 priv->regs = pci_iomap(pdev, 1, 0x10000);
5630 if (priv->regs == NULL) {
5631 priv->regs = pci_iomap(pdev, 2, 0x10000);
5632 if (priv->regs == NULL) {
5633 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5634 goto err_iounmap;
5635 }
5636 }
5637
5638 /*
5639 * Choose the initial fw image depending on user input. If a second
5640 * image is available, make it the alternative image that will be
5641 * loaded if the first one fails.
5642 */
5643 init_completion(&priv->firmware_loading_complete);
5644 di = priv->device_info;
5645 if (ap_mode_default && di->fw_image_ap) {
5646 priv->fw_pref = di->fw_image_ap;
5647 priv->fw_alt = di->fw_image_sta;
5648 } else if (!ap_mode_default && di->fw_image_sta) {
5649 priv->fw_pref = di->fw_image_sta;
5650 priv->fw_alt = di->fw_image_ap;
5651 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5652 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5653 priv->fw_pref = di->fw_image_sta;
5654 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5655 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5656 priv->fw_pref = di->fw_image_ap;
5657 }
5658 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5659 if (rc)
5660 goto err_stop_firmware;
5661 return rc;
5662
5663 err_stop_firmware:
5664 mwl8k_hw_reset(priv);
5665
5666 err_iounmap:
5667 if (priv->regs != NULL)
5668 pci_iounmap(pdev, priv->regs);
5669
5670 if (priv->sram != NULL)
5671 pci_iounmap(pdev, priv->sram);
5672
5673 pci_set_drvdata(pdev, NULL);
5674 ieee80211_free_hw(hw);
5675
5676 err_free_reg:
5677 pci_release_regions(pdev);
5678
5679 err_disable_device:
5680 pci_disable_device(pdev);
5681
5682 return rc;
5683 }
5684
5685 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5686 {
5687 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5688 }
5689
5690 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5691 {
5692 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5693 struct mwl8k_priv *priv;
5694 int i;
5695
5696 if (hw == NULL)
5697 return;
5698 priv = hw->priv;
5699
5700 wait_for_completion(&priv->firmware_loading_complete);
5701
5702 if (priv->fw_state == FW_STATE_ERROR) {
5703 mwl8k_hw_reset(priv);
5704 goto unmap;
5705 }
5706
5707 ieee80211_stop_queues(hw);
5708
5709 ieee80211_unregister_hw(hw);
5710
5711 /* Remove TX reclaim and RX tasklets. */
5712 tasklet_kill(&priv->poll_tx_task);
5713 tasklet_kill(&priv->poll_rx_task);
5714
5715 /* Stop hardware */
5716 mwl8k_hw_reset(priv);
5717
5718 /* Return all skbs to mac80211 */
5719 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5720 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5721
5722 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5723 mwl8k_txq_deinit(hw, i);
5724
5725 mwl8k_rxq_deinit(hw, 0);
5726
5727 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5728
5729 unmap:
5730 pci_iounmap(pdev, priv->regs);
5731 pci_iounmap(pdev, priv->sram);
5732 pci_set_drvdata(pdev, NULL);
5733 ieee80211_free_hw(hw);
5734 pci_release_regions(pdev);
5735 pci_disable_device(pdev);
5736 }
5737
5738 static struct pci_driver mwl8k_driver = {
5739 .name = MWL8K_NAME,
5740 .id_table = mwl8k_pci_id_table,
5741 .probe = mwl8k_probe,
5742 .remove = __devexit_p(mwl8k_remove),
5743 .shutdown = __devexit_p(mwl8k_shutdown),
5744 };
5745
5746 static int __init mwl8k_init(void)
5747 {
5748 return pci_register_driver(&mwl8k_driver);
5749 }
5750
5751 static void __exit mwl8k_exit(void)
5752 {
5753 pci_unregister_driver(&mwl8k_driver);
5754 }
5755
5756 module_init(mwl8k_init);
5757 module_exit(mwl8k_exit);
5758
5759 MODULE_DESCRIPTION(MWL8K_DESC);
5760 MODULE_VERSION(MWL8K_VERSION);
5761 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5762 MODULE_LICENSE("GPL");
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