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[mirror_ubuntu-bionic-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/interrupt.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/spinlock.h>
18 #include <linux/list.h>
19 #include <linux/pci.h>
20 #include <linux/delay.h>
21 #include <linux/completion.h>
22 #include <linux/etherdevice.h>
23 #include <linux/slab.h>
24 #include <net/mac80211.h>
25 #include <linux/moduleparam.h>
26 #include <linux/firmware.h>
27 #include <linux/workqueue.h>
28
29 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
30 #define MWL8K_NAME KBUILD_MODNAME
31 #define MWL8K_VERSION "0.12"
32
33 /* Module parameters */
34 static unsigned ap_mode_default;
35 module_param(ap_mode_default, bool, 0);
36 MODULE_PARM_DESC(ap_mode_default,
37 "Set to 1 to make ap mode the default instead of sta mode");
38
39 /* Register definitions */
40 #define MWL8K_HIU_GEN_PTR 0x00000c10
41 #define MWL8K_MODE_STA 0x0000005a
42 #define MWL8K_MODE_AP 0x000000a5
43 #define MWL8K_HIU_INT_CODE 0x00000c14
44 #define MWL8K_FWSTA_READY 0xf0f1f2f4
45 #define MWL8K_FWAP_READY 0xf1f2f4a5
46 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
47 #define MWL8K_HIU_SCRATCH 0x00000c40
48
49 /* Host->device communications */
50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
52 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
55 #define MWL8K_H2A_INT_DUMMY (1 << 20)
56 #define MWL8K_H2A_INT_RESET (1 << 15)
57 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
58 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
59
60 /* Device->host communications */
61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
63 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
66 #define MWL8K_A2H_INT_DUMMY (1 << 20)
67 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
68 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
69 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
70 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
71 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
72 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
73 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
74 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
75 #define MWL8K_A2H_INT_RX_READY (1 << 1)
76 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
77
78 /* HW micro second timer register
79 * located at offset 0xA600. This
80 * will be used to timestamp tx
81 * packets.
82 */
83
84 #define MWL8K_HW_TIMER_REGISTER 0x0000a600
85
86 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
87 MWL8K_A2H_INT_CHNL_SWITCHED | \
88 MWL8K_A2H_INT_QUEUE_EMPTY | \
89 MWL8K_A2H_INT_RADAR_DETECT | \
90 MWL8K_A2H_INT_RADIO_ON | \
91 MWL8K_A2H_INT_RADIO_OFF | \
92 MWL8K_A2H_INT_MAC_EVENT | \
93 MWL8K_A2H_INT_OPC_DONE | \
94 MWL8K_A2H_INT_RX_READY | \
95 MWL8K_A2H_INT_TX_DONE | \
96 MWL8K_A2H_INT_BA_WATCHDOG)
97
98 #define MWL8K_RX_QUEUES 1
99 #define MWL8K_TX_WMM_QUEUES 4
100 #define MWL8K_MAX_AMPDU_QUEUES 8
101 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
102 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
103
104 struct rxd_ops {
105 int rxd_size;
106 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
107 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
108 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
109 __le16 *qos, s8 *noise);
110 };
111
112 struct mwl8k_device_info {
113 char *part_name;
114 char *helper_image;
115 char *fw_image_sta;
116 char *fw_image_ap;
117 struct rxd_ops *ap_rxd_ops;
118 u32 fw_api_ap;
119 };
120
121 struct mwl8k_rx_queue {
122 int rxd_count;
123
124 /* hw receives here */
125 int head;
126
127 /* refill descs here */
128 int tail;
129
130 void *rxd;
131 dma_addr_t rxd_dma;
132 struct {
133 struct sk_buff *skb;
134 DEFINE_DMA_UNMAP_ADDR(dma);
135 } *buf;
136 };
137
138 struct mwl8k_tx_queue {
139 /* hw transmits here */
140 int head;
141
142 /* sw appends here */
143 int tail;
144
145 unsigned int len;
146 struct mwl8k_tx_desc *txd;
147 dma_addr_t txd_dma;
148 struct sk_buff **skb;
149 };
150
151 enum {
152 AMPDU_NO_STREAM,
153 AMPDU_STREAM_NEW,
154 AMPDU_STREAM_IN_PROGRESS,
155 AMPDU_STREAM_ACTIVE,
156 };
157
158 struct mwl8k_ampdu_stream {
159 struct ieee80211_sta *sta;
160 u8 tid;
161 u8 state;
162 u8 idx;
163 u8 txq_idx; /* index of this stream in priv->txq */
164 };
165
166 struct mwl8k_priv {
167 struct ieee80211_hw *hw;
168 struct pci_dev *pdev;
169 int irq;
170
171 struct mwl8k_device_info *device_info;
172
173 void __iomem *sram;
174 void __iomem *regs;
175
176 /* firmware */
177 const struct firmware *fw_helper;
178 const struct firmware *fw_ucode;
179
180 /* hardware/firmware parameters */
181 bool ap_fw;
182 struct rxd_ops *rxd_ops;
183 struct ieee80211_supported_band band_24;
184 struct ieee80211_channel channels_24[14];
185 struct ieee80211_rate rates_24[14];
186 struct ieee80211_supported_band band_50;
187 struct ieee80211_channel channels_50[4];
188 struct ieee80211_rate rates_50[9];
189 u32 ap_macids_supported;
190 u32 sta_macids_supported;
191
192 /* Ampdu stream information */
193 u8 num_ampdu_queues;
194 spinlock_t stream_lock;
195 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
196 struct work_struct watchdog_ba_handle;
197
198 /* firmware access */
199 struct mutex fw_mutex;
200 struct task_struct *fw_mutex_owner;
201 int fw_mutex_depth;
202 struct completion *hostcmd_wait;
203
204 /* lock held over TX and TX reap */
205 spinlock_t tx_lock;
206
207 /* TX quiesce completion, protected by fw_mutex and tx_lock */
208 struct completion *tx_wait;
209
210 /* List of interfaces. */
211 u32 macids_used;
212 struct list_head vif_list;
213
214 /* power management status cookie from firmware */
215 u32 *cookie;
216 dma_addr_t cookie_dma;
217
218 u16 num_mcaddrs;
219 u8 hw_rev;
220 u32 fw_rev;
221
222 /*
223 * Running count of TX packets in flight, to avoid
224 * iterating over the transmit rings each time.
225 */
226 int pending_tx_pkts;
227
228 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
229 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
230 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
231
232 bool radio_on;
233 bool radio_short_preamble;
234 bool sniffer_enabled;
235 bool wmm_enabled;
236
237 /* XXX need to convert this to handle multiple interfaces */
238 bool capture_beacon;
239 u8 capture_bssid[ETH_ALEN];
240 struct sk_buff *beacon_skb;
241
242 /*
243 * This FJ worker has to be global as it is scheduled from the
244 * RX handler. At this point we don't know which interface it
245 * belongs to until the list of bssids waiting to complete join
246 * is checked.
247 */
248 struct work_struct finalize_join_worker;
249
250 /* Tasklet to perform TX reclaim. */
251 struct tasklet_struct poll_tx_task;
252
253 /* Tasklet to perform RX. */
254 struct tasklet_struct poll_rx_task;
255
256 /* Most recently reported noise in dBm */
257 s8 noise;
258
259 /*
260 * preserve the queue configurations so they can be restored if/when
261 * the firmware image is swapped.
262 */
263 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
264
265 /* async firmware loading state */
266 unsigned fw_state;
267 char *fw_pref;
268 char *fw_alt;
269 struct completion firmware_loading_complete;
270 };
271
272 #define MAX_WEP_KEY_LEN 13
273 #define NUM_WEP_KEYS 4
274
275 /* Per interface specific private data */
276 struct mwl8k_vif {
277 struct list_head list;
278 struct ieee80211_vif *vif;
279
280 /* Firmware macid for this vif. */
281 int macid;
282
283 /* Non AMPDU sequence number assigned by driver. */
284 u16 seqno;
285
286 /* Saved WEP keys */
287 struct {
288 u8 enabled;
289 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
290 } wep_key_conf[NUM_WEP_KEYS];
291
292 /* BSSID */
293 u8 bssid[ETH_ALEN];
294
295 /* A flag to indicate is HW crypto is enabled for this bssid */
296 bool is_hw_crypto_enabled;
297 };
298 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
299 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
300
301 struct tx_traffic_info {
302 u32 start_time;
303 u32 pkts;
304 };
305
306 #define MWL8K_MAX_TID 8
307 struct mwl8k_sta {
308 /* Index into station database. Returned by UPDATE_STADB. */
309 u8 peer_id;
310 u8 is_ampdu_allowed;
311 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
312 };
313 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
314
315 static const struct ieee80211_channel mwl8k_channels_24[] = {
316 { .center_freq = 2412, .hw_value = 1, },
317 { .center_freq = 2417, .hw_value = 2, },
318 { .center_freq = 2422, .hw_value = 3, },
319 { .center_freq = 2427, .hw_value = 4, },
320 { .center_freq = 2432, .hw_value = 5, },
321 { .center_freq = 2437, .hw_value = 6, },
322 { .center_freq = 2442, .hw_value = 7, },
323 { .center_freq = 2447, .hw_value = 8, },
324 { .center_freq = 2452, .hw_value = 9, },
325 { .center_freq = 2457, .hw_value = 10, },
326 { .center_freq = 2462, .hw_value = 11, },
327 { .center_freq = 2467, .hw_value = 12, },
328 { .center_freq = 2472, .hw_value = 13, },
329 { .center_freq = 2484, .hw_value = 14, },
330 };
331
332 static const struct ieee80211_rate mwl8k_rates_24[] = {
333 { .bitrate = 10, .hw_value = 2, },
334 { .bitrate = 20, .hw_value = 4, },
335 { .bitrate = 55, .hw_value = 11, },
336 { .bitrate = 110, .hw_value = 22, },
337 { .bitrate = 220, .hw_value = 44, },
338 { .bitrate = 60, .hw_value = 12, },
339 { .bitrate = 90, .hw_value = 18, },
340 { .bitrate = 120, .hw_value = 24, },
341 { .bitrate = 180, .hw_value = 36, },
342 { .bitrate = 240, .hw_value = 48, },
343 { .bitrate = 360, .hw_value = 72, },
344 { .bitrate = 480, .hw_value = 96, },
345 { .bitrate = 540, .hw_value = 108, },
346 { .bitrate = 720, .hw_value = 144, },
347 };
348
349 static const struct ieee80211_channel mwl8k_channels_50[] = {
350 { .center_freq = 5180, .hw_value = 36, },
351 { .center_freq = 5200, .hw_value = 40, },
352 { .center_freq = 5220, .hw_value = 44, },
353 { .center_freq = 5240, .hw_value = 48, },
354 };
355
356 static const struct ieee80211_rate mwl8k_rates_50[] = {
357 { .bitrate = 60, .hw_value = 12, },
358 { .bitrate = 90, .hw_value = 18, },
359 { .bitrate = 120, .hw_value = 24, },
360 { .bitrate = 180, .hw_value = 36, },
361 { .bitrate = 240, .hw_value = 48, },
362 { .bitrate = 360, .hw_value = 72, },
363 { .bitrate = 480, .hw_value = 96, },
364 { .bitrate = 540, .hw_value = 108, },
365 { .bitrate = 720, .hw_value = 144, },
366 };
367
368 /* Set or get info from Firmware */
369 #define MWL8K_CMD_GET 0x0000
370 #define MWL8K_CMD_SET 0x0001
371 #define MWL8K_CMD_SET_LIST 0x0002
372
373 /* Firmware command codes */
374 #define MWL8K_CMD_CODE_DNLD 0x0001
375 #define MWL8K_CMD_GET_HW_SPEC 0x0003
376 #define MWL8K_CMD_SET_HW_SPEC 0x0004
377 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
378 #define MWL8K_CMD_GET_STAT 0x0014
379 #define MWL8K_CMD_RADIO_CONTROL 0x001c
380 #define MWL8K_CMD_RF_TX_POWER 0x001e
381 #define MWL8K_CMD_TX_POWER 0x001f
382 #define MWL8K_CMD_RF_ANTENNA 0x0020
383 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
384 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
385 #define MWL8K_CMD_SET_POST_SCAN 0x0108
386 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
387 #define MWL8K_CMD_SET_AID 0x010d
388 #define MWL8K_CMD_SET_RATE 0x0110
389 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
390 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
391 #define MWL8K_CMD_SET_SLOT 0x0114
392 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
393 #define MWL8K_CMD_SET_WMM_MODE 0x0123
394 #define MWL8K_CMD_MIMO_CONFIG 0x0125
395 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
396 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
397 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
398 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
399 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
400 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
401 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
402 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
403 #define MWL8K_CMD_UPDATE_STADB 0x1123
404 #define MWL8K_CMD_BASTREAM 0x1125
405
406 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
407 {
408 u16 command = le16_to_cpu(cmd);
409
410 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
411 snprintf(buf, bufsize, "%s", #x);\
412 return buf;\
413 } while (0)
414 switch (command & ~0x8000) {
415 MWL8K_CMDNAME(CODE_DNLD);
416 MWL8K_CMDNAME(GET_HW_SPEC);
417 MWL8K_CMDNAME(SET_HW_SPEC);
418 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
419 MWL8K_CMDNAME(GET_STAT);
420 MWL8K_CMDNAME(RADIO_CONTROL);
421 MWL8K_CMDNAME(RF_TX_POWER);
422 MWL8K_CMDNAME(TX_POWER);
423 MWL8K_CMDNAME(RF_ANTENNA);
424 MWL8K_CMDNAME(SET_BEACON);
425 MWL8K_CMDNAME(SET_PRE_SCAN);
426 MWL8K_CMDNAME(SET_POST_SCAN);
427 MWL8K_CMDNAME(SET_RF_CHANNEL);
428 MWL8K_CMDNAME(SET_AID);
429 MWL8K_CMDNAME(SET_RATE);
430 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
431 MWL8K_CMDNAME(RTS_THRESHOLD);
432 MWL8K_CMDNAME(SET_SLOT);
433 MWL8K_CMDNAME(SET_EDCA_PARAMS);
434 MWL8K_CMDNAME(SET_WMM_MODE);
435 MWL8K_CMDNAME(MIMO_CONFIG);
436 MWL8K_CMDNAME(USE_FIXED_RATE);
437 MWL8K_CMDNAME(ENABLE_SNIFFER);
438 MWL8K_CMDNAME(SET_MAC_ADDR);
439 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
440 MWL8K_CMDNAME(BSS_START);
441 MWL8K_CMDNAME(SET_NEW_STN);
442 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
443 MWL8K_CMDNAME(UPDATE_STADB);
444 MWL8K_CMDNAME(BASTREAM);
445 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
446 default:
447 snprintf(buf, bufsize, "0x%x", cmd);
448 }
449 #undef MWL8K_CMDNAME
450
451 return buf;
452 }
453
454 /* Hardware and firmware reset */
455 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
456 {
457 iowrite32(MWL8K_H2A_INT_RESET,
458 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
459 iowrite32(MWL8K_H2A_INT_RESET,
460 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
461 msleep(20);
462 }
463
464 /* Release fw image */
465 static void mwl8k_release_fw(const struct firmware **fw)
466 {
467 if (*fw == NULL)
468 return;
469 release_firmware(*fw);
470 *fw = NULL;
471 }
472
473 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
474 {
475 mwl8k_release_fw(&priv->fw_ucode);
476 mwl8k_release_fw(&priv->fw_helper);
477 }
478
479 /* states for asynchronous f/w loading */
480 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
481 enum {
482 FW_STATE_INIT = 0,
483 FW_STATE_LOADING_PREF,
484 FW_STATE_LOADING_ALT,
485 FW_STATE_ERROR,
486 };
487
488 /* Request fw image */
489 static int mwl8k_request_fw(struct mwl8k_priv *priv,
490 const char *fname, const struct firmware **fw,
491 bool nowait)
492 {
493 /* release current image */
494 if (*fw != NULL)
495 mwl8k_release_fw(fw);
496
497 if (nowait)
498 return request_firmware_nowait(THIS_MODULE, 1, fname,
499 &priv->pdev->dev, GFP_KERNEL,
500 priv, mwl8k_fw_state_machine);
501 else
502 return request_firmware(fw, fname, &priv->pdev->dev);
503 }
504
505 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
506 bool nowait)
507 {
508 struct mwl8k_device_info *di = priv->device_info;
509 int rc;
510
511 if (di->helper_image != NULL) {
512 if (nowait)
513 rc = mwl8k_request_fw(priv, di->helper_image,
514 &priv->fw_helper, true);
515 else
516 rc = mwl8k_request_fw(priv, di->helper_image,
517 &priv->fw_helper, false);
518 if (rc)
519 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
520 pci_name(priv->pdev), di->helper_image);
521
522 if (rc || nowait)
523 return rc;
524 }
525
526 if (nowait) {
527 /*
528 * if we get here, no helper image is needed. Skip the
529 * FW_STATE_INIT state.
530 */
531 priv->fw_state = FW_STATE_LOADING_PREF;
532 rc = mwl8k_request_fw(priv, fw_image,
533 &priv->fw_ucode,
534 true);
535 } else
536 rc = mwl8k_request_fw(priv, fw_image,
537 &priv->fw_ucode, false);
538 if (rc) {
539 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
540 pci_name(priv->pdev), fw_image);
541 mwl8k_release_fw(&priv->fw_helper);
542 return rc;
543 }
544
545 return 0;
546 }
547
548 struct mwl8k_cmd_pkt {
549 __le16 code;
550 __le16 length;
551 __u8 seq_num;
552 __u8 macid;
553 __le16 result;
554 char payload[0];
555 } __packed;
556
557 /*
558 * Firmware loading.
559 */
560 static int
561 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
562 {
563 void __iomem *regs = priv->regs;
564 dma_addr_t dma_addr;
565 int loops;
566
567 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
568 if (pci_dma_mapping_error(priv->pdev, dma_addr))
569 return -ENOMEM;
570
571 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
572 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
573 iowrite32(MWL8K_H2A_INT_DOORBELL,
574 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
575 iowrite32(MWL8K_H2A_INT_DUMMY,
576 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
577
578 loops = 1000;
579 do {
580 u32 int_code;
581
582 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
583 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
584 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
585 break;
586 }
587
588 cond_resched();
589 udelay(1);
590 } while (--loops);
591
592 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
593
594 return loops ? 0 : -ETIMEDOUT;
595 }
596
597 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
598 const u8 *data, size_t length)
599 {
600 struct mwl8k_cmd_pkt *cmd;
601 int done;
602 int rc = 0;
603
604 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
605 if (cmd == NULL)
606 return -ENOMEM;
607
608 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
609 cmd->seq_num = 0;
610 cmd->macid = 0;
611 cmd->result = 0;
612
613 done = 0;
614 while (length) {
615 int block_size = length > 256 ? 256 : length;
616
617 memcpy(cmd->payload, data + done, block_size);
618 cmd->length = cpu_to_le16(block_size);
619
620 rc = mwl8k_send_fw_load_cmd(priv, cmd,
621 sizeof(*cmd) + block_size);
622 if (rc)
623 break;
624
625 done += block_size;
626 length -= block_size;
627 }
628
629 if (!rc) {
630 cmd->length = 0;
631 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
632 }
633
634 kfree(cmd);
635
636 return rc;
637 }
638
639 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
640 const u8 *data, size_t length)
641 {
642 unsigned char *buffer;
643 int may_continue, rc = 0;
644 u32 done, prev_block_size;
645
646 buffer = kmalloc(1024, GFP_KERNEL);
647 if (buffer == NULL)
648 return -ENOMEM;
649
650 done = 0;
651 prev_block_size = 0;
652 may_continue = 1000;
653 while (may_continue > 0) {
654 u32 block_size;
655
656 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
657 if (block_size & 1) {
658 block_size &= ~1;
659 may_continue--;
660 } else {
661 done += prev_block_size;
662 length -= prev_block_size;
663 }
664
665 if (block_size > 1024 || block_size > length) {
666 rc = -EOVERFLOW;
667 break;
668 }
669
670 if (length == 0) {
671 rc = 0;
672 break;
673 }
674
675 if (block_size == 0) {
676 rc = -EPROTO;
677 may_continue--;
678 udelay(1);
679 continue;
680 }
681
682 prev_block_size = block_size;
683 memcpy(buffer, data + done, block_size);
684
685 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
686 if (rc)
687 break;
688 }
689
690 if (!rc && length != 0)
691 rc = -EREMOTEIO;
692
693 kfree(buffer);
694
695 return rc;
696 }
697
698 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
699 {
700 struct mwl8k_priv *priv = hw->priv;
701 const struct firmware *fw = priv->fw_ucode;
702 int rc;
703 int loops;
704
705 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
706 const struct firmware *helper = priv->fw_helper;
707
708 if (helper == NULL) {
709 printk(KERN_ERR "%s: helper image needed but none "
710 "given\n", pci_name(priv->pdev));
711 return -EINVAL;
712 }
713
714 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
715 if (rc) {
716 printk(KERN_ERR "%s: unable to load firmware "
717 "helper image\n", pci_name(priv->pdev));
718 return rc;
719 }
720 msleep(20);
721
722 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
723 } else {
724 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
725 }
726
727 if (rc) {
728 printk(KERN_ERR "%s: unable to load firmware image\n",
729 pci_name(priv->pdev));
730 return rc;
731 }
732
733 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
734
735 loops = 500000;
736 do {
737 u32 ready_code;
738
739 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
740 if (ready_code == MWL8K_FWAP_READY) {
741 priv->ap_fw = 1;
742 break;
743 } else if (ready_code == MWL8K_FWSTA_READY) {
744 priv->ap_fw = 0;
745 break;
746 }
747
748 cond_resched();
749 udelay(1);
750 } while (--loops);
751
752 return loops ? 0 : -ETIMEDOUT;
753 }
754
755
756 /* DMA header used by firmware and hardware. */
757 struct mwl8k_dma_data {
758 __le16 fwlen;
759 struct ieee80211_hdr wh;
760 char data[0];
761 } __packed;
762
763 /* Routines to add/remove DMA header from skb. */
764 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
765 {
766 struct mwl8k_dma_data *tr;
767 int hdrlen;
768
769 tr = (struct mwl8k_dma_data *)skb->data;
770 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
771
772 if (hdrlen != sizeof(tr->wh)) {
773 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
774 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
775 *((__le16 *)(tr->data - 2)) = qos;
776 } else {
777 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
778 }
779 }
780
781 if (hdrlen != sizeof(*tr))
782 skb_pull(skb, sizeof(*tr) - hdrlen);
783 }
784
785 #define REDUCED_TX_HEADROOM 8
786
787 static void
788 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
789 int head_pad, int tail_pad)
790 {
791 struct ieee80211_hdr *wh;
792 int hdrlen;
793 int reqd_hdrlen;
794 struct mwl8k_dma_data *tr;
795
796 /*
797 * Add a firmware DMA header; the firmware requires that we
798 * present a 2-byte payload length followed by a 4-address
799 * header (without QoS field), followed (optionally) by any
800 * WEP/ExtIV header (but only filled in for CCMP).
801 */
802 wh = (struct ieee80211_hdr *)skb->data;
803
804 hdrlen = ieee80211_hdrlen(wh->frame_control);
805
806 /*
807 * Check if skb_resize is required because of
808 * tx_headroom adjustment.
809 */
810 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
811 + REDUCED_TX_HEADROOM))) {
812 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
813
814 wiphy_err(priv->hw->wiphy,
815 "Failed to reallocate TX buffer\n");
816 return;
817 }
818 skb->truesize += REDUCED_TX_HEADROOM;
819 }
820
821 reqd_hdrlen = sizeof(*tr) + head_pad;
822
823 if (hdrlen != reqd_hdrlen)
824 skb_push(skb, reqd_hdrlen - hdrlen);
825
826 if (ieee80211_is_data_qos(wh->frame_control))
827 hdrlen -= IEEE80211_QOS_CTL_LEN;
828
829 tr = (struct mwl8k_dma_data *)skb->data;
830 if (wh != &tr->wh)
831 memmove(&tr->wh, wh, hdrlen);
832 if (hdrlen != sizeof(tr->wh))
833 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
834
835 /*
836 * Firmware length is the length of the fully formed "802.11
837 * payload". That is, everything except for the 802.11 header.
838 * This includes all crypto material including the MIC.
839 */
840 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
841 }
842
843 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
844 struct sk_buff *skb)
845 {
846 struct ieee80211_hdr *wh;
847 struct ieee80211_tx_info *tx_info;
848 struct ieee80211_key_conf *key_conf;
849 int data_pad;
850 int head_pad = 0;
851
852 wh = (struct ieee80211_hdr *)skb->data;
853
854 tx_info = IEEE80211_SKB_CB(skb);
855
856 key_conf = NULL;
857 if (ieee80211_is_data(wh->frame_control))
858 key_conf = tx_info->control.hw_key;
859
860 /*
861 * Make sure the packet header is in the DMA header format (4-address
862 * without QoS), and add head & tail padding when HW crypto is enabled.
863 *
864 * We have the following trailer padding requirements:
865 * - WEP: 4 trailer bytes (ICV)
866 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
867 * - CCMP: 8 trailer bytes (MIC)
868 */
869 data_pad = 0;
870 if (key_conf != NULL) {
871 head_pad = key_conf->iv_len;
872 switch (key_conf->cipher) {
873 case WLAN_CIPHER_SUITE_WEP40:
874 case WLAN_CIPHER_SUITE_WEP104:
875 data_pad = 4;
876 break;
877 case WLAN_CIPHER_SUITE_TKIP:
878 data_pad = 12;
879 break;
880 case WLAN_CIPHER_SUITE_CCMP:
881 data_pad = 8;
882 break;
883 }
884 }
885 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
886 }
887
888 /*
889 * Packet reception for 88w8366 AP firmware.
890 */
891 struct mwl8k_rxd_8366_ap {
892 __le16 pkt_len;
893 __u8 sq2;
894 __u8 rate;
895 __le32 pkt_phys_addr;
896 __le32 next_rxd_phys_addr;
897 __le16 qos_control;
898 __le16 htsig2;
899 __le32 hw_rssi_info;
900 __le32 hw_noise_floor_info;
901 __u8 noise_floor;
902 __u8 pad0[3];
903 __u8 rssi;
904 __u8 rx_status;
905 __u8 channel;
906 __u8 rx_ctrl;
907 } __packed;
908
909 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
910 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
911 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
912
913 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
914
915 /* 8366 AP rx_status bits */
916 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
917 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
918 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
919 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
920 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
921
922 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
923 {
924 struct mwl8k_rxd_8366_ap *rxd = _rxd;
925
926 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
927 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
928 }
929
930 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
931 {
932 struct mwl8k_rxd_8366_ap *rxd = _rxd;
933
934 rxd->pkt_len = cpu_to_le16(len);
935 rxd->pkt_phys_addr = cpu_to_le32(addr);
936 wmb();
937 rxd->rx_ctrl = 0;
938 }
939
940 static int
941 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
942 __le16 *qos, s8 *noise)
943 {
944 struct mwl8k_rxd_8366_ap *rxd = _rxd;
945
946 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
947 return -1;
948 rmb();
949
950 memset(status, 0, sizeof(*status));
951
952 status->signal = -rxd->rssi;
953 *noise = -rxd->noise_floor;
954
955 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
956 status->flag |= RX_FLAG_HT;
957 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
958 status->flag |= RX_FLAG_40MHZ;
959 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
960 } else {
961 int i;
962
963 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
964 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
965 status->rate_idx = i;
966 break;
967 }
968 }
969 }
970
971 if (rxd->channel > 14) {
972 status->band = IEEE80211_BAND_5GHZ;
973 if (!(status->flag & RX_FLAG_HT))
974 status->rate_idx -= 5;
975 } else {
976 status->band = IEEE80211_BAND_2GHZ;
977 }
978 status->freq = ieee80211_channel_to_frequency(rxd->channel,
979 status->band);
980
981 *qos = rxd->qos_control;
982
983 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
984 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
985 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
986 status->flag |= RX_FLAG_MMIC_ERROR;
987
988 return le16_to_cpu(rxd->pkt_len);
989 }
990
991 static struct rxd_ops rxd_8366_ap_ops = {
992 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
993 .rxd_init = mwl8k_rxd_8366_ap_init,
994 .rxd_refill = mwl8k_rxd_8366_ap_refill,
995 .rxd_process = mwl8k_rxd_8366_ap_process,
996 };
997
998 /*
999 * Packet reception for STA firmware.
1000 */
1001 struct mwl8k_rxd_sta {
1002 __le16 pkt_len;
1003 __u8 link_quality;
1004 __u8 noise_level;
1005 __le32 pkt_phys_addr;
1006 __le32 next_rxd_phys_addr;
1007 __le16 qos_control;
1008 __le16 rate_info;
1009 __le32 pad0[4];
1010 __u8 rssi;
1011 __u8 channel;
1012 __le16 pad1;
1013 __u8 rx_ctrl;
1014 __u8 rx_status;
1015 __u8 pad2[2];
1016 } __packed;
1017
1018 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1019 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1020 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1021 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1022 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1023 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1024
1025 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1026 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1027 /* ICV=0 or MIC=1 */
1028 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1029 /* Key is uploaded only in failure case */
1030 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1031
1032 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1033 {
1034 struct mwl8k_rxd_sta *rxd = _rxd;
1035
1036 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1037 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1038 }
1039
1040 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1041 {
1042 struct mwl8k_rxd_sta *rxd = _rxd;
1043
1044 rxd->pkt_len = cpu_to_le16(len);
1045 rxd->pkt_phys_addr = cpu_to_le32(addr);
1046 wmb();
1047 rxd->rx_ctrl = 0;
1048 }
1049
1050 static int
1051 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1052 __le16 *qos, s8 *noise)
1053 {
1054 struct mwl8k_rxd_sta *rxd = _rxd;
1055 u16 rate_info;
1056
1057 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1058 return -1;
1059 rmb();
1060
1061 rate_info = le16_to_cpu(rxd->rate_info);
1062
1063 memset(status, 0, sizeof(*status));
1064
1065 status->signal = -rxd->rssi;
1066 *noise = -rxd->noise_level;
1067 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1068 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1069
1070 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1071 status->flag |= RX_FLAG_SHORTPRE;
1072 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1073 status->flag |= RX_FLAG_40MHZ;
1074 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1075 status->flag |= RX_FLAG_SHORT_GI;
1076 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1077 status->flag |= RX_FLAG_HT;
1078
1079 if (rxd->channel > 14) {
1080 status->band = IEEE80211_BAND_5GHZ;
1081 if (!(status->flag & RX_FLAG_HT))
1082 status->rate_idx -= 5;
1083 } else {
1084 status->band = IEEE80211_BAND_2GHZ;
1085 }
1086 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1087 status->band);
1088
1089 *qos = rxd->qos_control;
1090 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1091 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1092 status->flag |= RX_FLAG_MMIC_ERROR;
1093
1094 return le16_to_cpu(rxd->pkt_len);
1095 }
1096
1097 static struct rxd_ops rxd_sta_ops = {
1098 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1099 .rxd_init = mwl8k_rxd_sta_init,
1100 .rxd_refill = mwl8k_rxd_sta_refill,
1101 .rxd_process = mwl8k_rxd_sta_process,
1102 };
1103
1104
1105 #define MWL8K_RX_DESCS 256
1106 #define MWL8K_RX_MAXSZ 3800
1107
1108 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1109 {
1110 struct mwl8k_priv *priv = hw->priv;
1111 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1112 int size;
1113 int i;
1114
1115 rxq->rxd_count = 0;
1116 rxq->head = 0;
1117 rxq->tail = 0;
1118
1119 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1120
1121 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1122 if (rxq->rxd == NULL) {
1123 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1124 return -ENOMEM;
1125 }
1126 memset(rxq->rxd, 0, size);
1127
1128 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1129 if (rxq->buf == NULL) {
1130 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1131 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1132 return -ENOMEM;
1133 }
1134
1135 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1136 int desc_size;
1137 void *rxd;
1138 int nexti;
1139 dma_addr_t next_dma_addr;
1140
1141 desc_size = priv->rxd_ops->rxd_size;
1142 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1143
1144 nexti = i + 1;
1145 if (nexti == MWL8K_RX_DESCS)
1146 nexti = 0;
1147 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1148
1149 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1150 }
1151
1152 return 0;
1153 }
1154
1155 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1156 {
1157 struct mwl8k_priv *priv = hw->priv;
1158 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1159 int refilled;
1160
1161 refilled = 0;
1162 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1163 struct sk_buff *skb;
1164 dma_addr_t addr;
1165 int rx;
1166 void *rxd;
1167
1168 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1169 if (skb == NULL)
1170 break;
1171
1172 addr = pci_map_single(priv->pdev, skb->data,
1173 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1174
1175 rxq->rxd_count++;
1176 rx = rxq->tail++;
1177 if (rxq->tail == MWL8K_RX_DESCS)
1178 rxq->tail = 0;
1179 rxq->buf[rx].skb = skb;
1180 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1181
1182 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1183 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1184
1185 refilled++;
1186 }
1187
1188 return refilled;
1189 }
1190
1191 /* Must be called only when the card's reception is completely halted */
1192 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1193 {
1194 struct mwl8k_priv *priv = hw->priv;
1195 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1196 int i;
1197
1198 if (rxq->rxd == NULL)
1199 return;
1200
1201 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1202 if (rxq->buf[i].skb != NULL) {
1203 pci_unmap_single(priv->pdev,
1204 dma_unmap_addr(&rxq->buf[i], dma),
1205 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1206 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1207
1208 kfree_skb(rxq->buf[i].skb);
1209 rxq->buf[i].skb = NULL;
1210 }
1211 }
1212
1213 kfree(rxq->buf);
1214 rxq->buf = NULL;
1215
1216 pci_free_consistent(priv->pdev,
1217 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1218 rxq->rxd, rxq->rxd_dma);
1219 rxq->rxd = NULL;
1220 }
1221
1222
1223 /*
1224 * Scan a list of BSSIDs to process for finalize join.
1225 * Allows for extension to process multiple BSSIDs.
1226 */
1227 static inline int
1228 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1229 {
1230 return priv->capture_beacon &&
1231 ieee80211_is_beacon(wh->frame_control) &&
1232 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1233 }
1234
1235 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1236 struct sk_buff *skb)
1237 {
1238 struct mwl8k_priv *priv = hw->priv;
1239
1240 priv->capture_beacon = false;
1241 memset(priv->capture_bssid, 0, ETH_ALEN);
1242
1243 /*
1244 * Use GFP_ATOMIC as rxq_process is called from
1245 * the primary interrupt handler, memory allocation call
1246 * must not sleep.
1247 */
1248 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1249 if (priv->beacon_skb != NULL)
1250 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1251 }
1252
1253 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1254 u8 *bssid)
1255 {
1256 struct mwl8k_vif *mwl8k_vif;
1257
1258 list_for_each_entry(mwl8k_vif,
1259 vif_list, list) {
1260 if (memcmp(bssid, mwl8k_vif->bssid,
1261 ETH_ALEN) == 0)
1262 return mwl8k_vif;
1263 }
1264
1265 return NULL;
1266 }
1267
1268 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1269 {
1270 struct mwl8k_priv *priv = hw->priv;
1271 struct mwl8k_vif *mwl8k_vif = NULL;
1272 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1273 int processed;
1274
1275 processed = 0;
1276 while (rxq->rxd_count && limit--) {
1277 struct sk_buff *skb;
1278 void *rxd;
1279 int pkt_len;
1280 struct ieee80211_rx_status status;
1281 struct ieee80211_hdr *wh;
1282 __le16 qos;
1283
1284 skb = rxq->buf[rxq->head].skb;
1285 if (skb == NULL)
1286 break;
1287
1288 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1289
1290 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1291 &priv->noise);
1292 if (pkt_len < 0)
1293 break;
1294
1295 rxq->buf[rxq->head].skb = NULL;
1296
1297 pci_unmap_single(priv->pdev,
1298 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1299 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1300 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1301
1302 rxq->head++;
1303 if (rxq->head == MWL8K_RX_DESCS)
1304 rxq->head = 0;
1305
1306 rxq->rxd_count--;
1307
1308 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1309
1310 /*
1311 * Check for a pending join operation. Save a
1312 * copy of the beacon and schedule a tasklet to
1313 * send a FINALIZE_JOIN command to the firmware.
1314 */
1315 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1316 mwl8k_save_beacon(hw, skb);
1317
1318 if (ieee80211_has_protected(wh->frame_control)) {
1319
1320 /* Check if hw crypto has been enabled for
1321 * this bss. If yes, set the status flags
1322 * accordingly
1323 */
1324 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1325 wh->addr1);
1326
1327 if (mwl8k_vif != NULL &&
1328 mwl8k_vif->is_hw_crypto_enabled == true) {
1329 /*
1330 * When MMIC ERROR is encountered
1331 * by the firmware, payload is
1332 * dropped and only 32 bytes of
1333 * mwl8k Firmware header is sent
1334 * to the host.
1335 *
1336 * We need to add four bytes of
1337 * key information. In it
1338 * MAC80211 expects keyidx set to
1339 * 0 for triggering Counter
1340 * Measure of MMIC failure.
1341 */
1342 if (status.flag & RX_FLAG_MMIC_ERROR) {
1343 struct mwl8k_dma_data *tr;
1344 tr = (struct mwl8k_dma_data *)skb->data;
1345 memset((void *)&(tr->data), 0, 4);
1346 pkt_len += 4;
1347 }
1348
1349 if (!ieee80211_is_auth(wh->frame_control))
1350 status.flag |= RX_FLAG_IV_STRIPPED |
1351 RX_FLAG_DECRYPTED |
1352 RX_FLAG_MMIC_STRIPPED;
1353 }
1354 }
1355
1356 skb_put(skb, pkt_len);
1357 mwl8k_remove_dma_header(skb, qos);
1358 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1359 ieee80211_rx_irqsafe(hw, skb);
1360
1361 processed++;
1362 }
1363
1364 return processed;
1365 }
1366
1367
1368 /*
1369 * Packet transmission.
1370 */
1371
1372 #define MWL8K_TXD_STATUS_OK 0x00000001
1373 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1374 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1375 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1376 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1377
1378 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1379 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1380 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1381 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1382 #define MWL8K_QOS_EOSP 0x0010
1383
1384 struct mwl8k_tx_desc {
1385 __le32 status;
1386 __u8 data_rate;
1387 __u8 tx_priority;
1388 __le16 qos_control;
1389 __le32 pkt_phys_addr;
1390 __le16 pkt_len;
1391 __u8 dest_MAC_addr[ETH_ALEN];
1392 __le32 next_txd_phys_addr;
1393 __le32 timestamp;
1394 __le16 rate_info;
1395 __u8 peer_id;
1396 __u8 tx_frag_cnt;
1397 } __packed;
1398
1399 #define MWL8K_TX_DESCS 128
1400
1401 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1402 {
1403 struct mwl8k_priv *priv = hw->priv;
1404 struct mwl8k_tx_queue *txq = priv->txq + index;
1405 int size;
1406 int i;
1407
1408 txq->len = 0;
1409 txq->head = 0;
1410 txq->tail = 0;
1411
1412 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1413
1414 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1415 if (txq->txd == NULL) {
1416 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1417 return -ENOMEM;
1418 }
1419 memset(txq->txd, 0, size);
1420
1421 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1422 if (txq->skb == NULL) {
1423 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1424 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1425 return -ENOMEM;
1426 }
1427
1428 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1429 struct mwl8k_tx_desc *tx_desc;
1430 int nexti;
1431
1432 tx_desc = txq->txd + i;
1433 nexti = (i + 1) % MWL8K_TX_DESCS;
1434
1435 tx_desc->status = 0;
1436 tx_desc->next_txd_phys_addr =
1437 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1438 }
1439
1440 return 0;
1441 }
1442
1443 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1444 {
1445 iowrite32(MWL8K_H2A_INT_PPA_READY,
1446 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1447 iowrite32(MWL8K_H2A_INT_DUMMY,
1448 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1449 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1450 }
1451
1452 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1453 {
1454 struct mwl8k_priv *priv = hw->priv;
1455 int i;
1456
1457 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1458 struct mwl8k_tx_queue *txq = priv->txq + i;
1459 int fw_owned = 0;
1460 int drv_owned = 0;
1461 int unused = 0;
1462 int desc;
1463
1464 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1465 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1466 u32 status;
1467
1468 status = le32_to_cpu(tx_desc->status);
1469 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1470 fw_owned++;
1471 else
1472 drv_owned++;
1473
1474 if (tx_desc->pkt_len == 0)
1475 unused++;
1476 }
1477
1478 wiphy_err(hw->wiphy,
1479 "txq[%d] len=%d head=%d tail=%d "
1480 "fw_owned=%d drv_owned=%d unused=%d\n",
1481 i,
1482 txq->len, txq->head, txq->tail,
1483 fw_owned, drv_owned, unused);
1484 }
1485 }
1486
1487 /*
1488 * Must be called with priv->fw_mutex held and tx queues stopped.
1489 */
1490 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1491
1492 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1493 {
1494 struct mwl8k_priv *priv = hw->priv;
1495 DECLARE_COMPLETION_ONSTACK(tx_wait);
1496 int retry;
1497 int rc;
1498
1499 might_sleep();
1500
1501 /*
1502 * The TX queues are stopped at this point, so this test
1503 * doesn't need to take ->tx_lock.
1504 */
1505 if (!priv->pending_tx_pkts)
1506 return 0;
1507
1508 retry = 0;
1509 rc = 0;
1510
1511 spin_lock_bh(&priv->tx_lock);
1512 priv->tx_wait = &tx_wait;
1513 while (!rc) {
1514 int oldcount;
1515 unsigned long timeout;
1516
1517 oldcount = priv->pending_tx_pkts;
1518
1519 spin_unlock_bh(&priv->tx_lock);
1520 timeout = wait_for_completion_timeout(&tx_wait,
1521 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1522 spin_lock_bh(&priv->tx_lock);
1523
1524 if (timeout) {
1525 WARN_ON(priv->pending_tx_pkts);
1526 if (retry)
1527 wiphy_notice(hw->wiphy, "tx rings drained\n");
1528 break;
1529 }
1530
1531 if (priv->pending_tx_pkts < oldcount) {
1532 wiphy_notice(hw->wiphy,
1533 "waiting for tx rings to drain (%d -> %d pkts)\n",
1534 oldcount, priv->pending_tx_pkts);
1535 retry = 1;
1536 continue;
1537 }
1538
1539 priv->tx_wait = NULL;
1540
1541 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1542 MWL8K_TX_WAIT_TIMEOUT_MS);
1543 mwl8k_dump_tx_rings(hw);
1544
1545 rc = -ETIMEDOUT;
1546 }
1547 spin_unlock_bh(&priv->tx_lock);
1548
1549 return rc;
1550 }
1551
1552 #define MWL8K_TXD_SUCCESS(status) \
1553 ((status) & (MWL8K_TXD_STATUS_OK | \
1554 MWL8K_TXD_STATUS_OK_RETRY | \
1555 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1556
1557 static int mwl8k_tid_queue_mapping(u8 tid)
1558 {
1559 BUG_ON(tid > 7);
1560
1561 switch (tid) {
1562 case 0:
1563 case 3:
1564 return IEEE80211_AC_BE;
1565 break;
1566 case 1:
1567 case 2:
1568 return IEEE80211_AC_BK;
1569 break;
1570 case 4:
1571 case 5:
1572 return IEEE80211_AC_VI;
1573 break;
1574 case 6:
1575 case 7:
1576 return IEEE80211_AC_VO;
1577 break;
1578 default:
1579 return -1;
1580 break;
1581 }
1582 }
1583
1584 /* The firmware will fill in the rate information
1585 * for each packet that gets queued in the hardware
1586 * and these macros will interpret that info.
1587 */
1588
1589 #define RI_FORMAT(a) (a & 0x0001)
1590 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1591
1592 static int
1593 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1594 {
1595 struct mwl8k_priv *priv = hw->priv;
1596 struct mwl8k_tx_queue *txq = priv->txq + index;
1597 int processed;
1598
1599 processed = 0;
1600 while (txq->len > 0 && limit--) {
1601 int tx;
1602 struct mwl8k_tx_desc *tx_desc;
1603 unsigned long addr;
1604 int size;
1605 struct sk_buff *skb;
1606 struct ieee80211_tx_info *info;
1607 u32 status;
1608 struct ieee80211_sta *sta;
1609 struct mwl8k_sta *sta_info = NULL;
1610 u16 rate_info;
1611 struct ieee80211_hdr *wh;
1612
1613 tx = txq->head;
1614 tx_desc = txq->txd + tx;
1615
1616 status = le32_to_cpu(tx_desc->status);
1617
1618 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1619 if (!force)
1620 break;
1621 tx_desc->status &=
1622 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1623 }
1624
1625 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1626 BUG_ON(txq->len == 0);
1627 txq->len--;
1628 priv->pending_tx_pkts--;
1629
1630 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1631 size = le16_to_cpu(tx_desc->pkt_len);
1632 skb = txq->skb[tx];
1633 txq->skb[tx] = NULL;
1634
1635 BUG_ON(skb == NULL);
1636 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1637
1638 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1639
1640 wh = (struct ieee80211_hdr *) skb->data;
1641
1642 /* Mark descriptor as unused */
1643 tx_desc->pkt_phys_addr = 0;
1644 tx_desc->pkt_len = 0;
1645
1646 info = IEEE80211_SKB_CB(skb);
1647 if (ieee80211_is_data(wh->frame_control)) {
1648 sta = info->control.sta;
1649 if (sta) {
1650 sta_info = MWL8K_STA(sta);
1651 BUG_ON(sta_info == NULL);
1652 rate_info = le16_to_cpu(tx_desc->rate_info);
1653 /* If rate is < 6.5 Mpbs for an ht station
1654 * do not form an ampdu. If the station is a
1655 * legacy station (format = 0), do not form an
1656 * ampdu
1657 */
1658 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1659 RI_FORMAT(rate_info) == 0) {
1660 sta_info->is_ampdu_allowed = false;
1661 } else {
1662 sta_info->is_ampdu_allowed = true;
1663 }
1664 }
1665 }
1666
1667 ieee80211_tx_info_clear_status(info);
1668
1669 /* Rate control is happening in the firmware.
1670 * Ensure no tx rate is being reported.
1671 */
1672 info->status.rates[0].idx = -1;
1673 info->status.rates[0].count = 1;
1674
1675 if (MWL8K_TXD_SUCCESS(status))
1676 info->flags |= IEEE80211_TX_STAT_ACK;
1677
1678 ieee80211_tx_status_irqsafe(hw, skb);
1679
1680 processed++;
1681 }
1682
1683 return processed;
1684 }
1685
1686 /* must be called only when the card's transmit is completely halted */
1687 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1688 {
1689 struct mwl8k_priv *priv = hw->priv;
1690 struct mwl8k_tx_queue *txq = priv->txq + index;
1691
1692 if (txq->txd == NULL)
1693 return;
1694
1695 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1696
1697 kfree(txq->skb);
1698 txq->skb = NULL;
1699
1700 pci_free_consistent(priv->pdev,
1701 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1702 txq->txd, txq->txd_dma);
1703 txq->txd = NULL;
1704 }
1705
1706 /* caller must hold priv->stream_lock when calling the stream functions */
1707 static struct mwl8k_ampdu_stream *
1708 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1709 {
1710 struct mwl8k_ampdu_stream *stream;
1711 struct mwl8k_priv *priv = hw->priv;
1712 int i;
1713
1714 for (i = 0; i < priv->num_ampdu_queues; i++) {
1715 stream = &priv->ampdu[i];
1716 if (stream->state == AMPDU_NO_STREAM) {
1717 stream->sta = sta;
1718 stream->state = AMPDU_STREAM_NEW;
1719 stream->tid = tid;
1720 stream->idx = i;
1721 stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1722 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1723 sta->addr, tid);
1724 return stream;
1725 }
1726 }
1727 return NULL;
1728 }
1729
1730 static int
1731 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1732 {
1733 int ret;
1734
1735 /* if the stream has already been started, don't start it again */
1736 if (stream->state != AMPDU_STREAM_NEW)
1737 return 0;
1738 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1739 if (ret)
1740 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1741 "%d\n", stream->sta->addr, stream->tid, ret);
1742 else
1743 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1744 stream->sta->addr, stream->tid);
1745 return ret;
1746 }
1747
1748 static void
1749 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1750 {
1751 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1752 stream->tid);
1753 memset(stream, 0, sizeof(*stream));
1754 }
1755
1756 static struct mwl8k_ampdu_stream *
1757 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1758 {
1759 struct mwl8k_priv *priv = hw->priv;
1760 int i;
1761
1762 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1763 struct mwl8k_ampdu_stream *stream;
1764 stream = &priv->ampdu[i];
1765 if (stream->state == AMPDU_NO_STREAM)
1766 continue;
1767 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1768 stream->tid == tid)
1769 return stream;
1770 }
1771 return NULL;
1772 }
1773
1774 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1775 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1776 {
1777 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1778 struct tx_traffic_info *tx_stats;
1779
1780 BUG_ON(tid >= MWL8K_MAX_TID);
1781 tx_stats = &sta_info->tx_stats[tid];
1782
1783 return sta_info->is_ampdu_allowed &&
1784 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1785 }
1786
1787 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1788 {
1789 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1790 struct tx_traffic_info *tx_stats;
1791
1792 BUG_ON(tid >= MWL8K_MAX_TID);
1793 tx_stats = &sta_info->tx_stats[tid];
1794
1795 if (tx_stats->start_time == 0)
1796 tx_stats->start_time = jiffies;
1797
1798 /* reset the packet count after each second elapses. If the number of
1799 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1800 * an ampdu stream to be started.
1801 */
1802 if (jiffies - tx_stats->start_time > HZ) {
1803 tx_stats->pkts = 0;
1804 tx_stats->start_time = 0;
1805 } else
1806 tx_stats->pkts++;
1807 }
1808
1809 static void
1810 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1811 {
1812 struct mwl8k_priv *priv = hw->priv;
1813 struct ieee80211_tx_info *tx_info;
1814 struct mwl8k_vif *mwl8k_vif;
1815 struct ieee80211_sta *sta;
1816 struct ieee80211_hdr *wh;
1817 struct mwl8k_tx_queue *txq;
1818 struct mwl8k_tx_desc *tx;
1819 dma_addr_t dma;
1820 u32 txstatus;
1821 u8 txdatarate;
1822 u16 qos;
1823 int txpriority;
1824 u8 tid = 0;
1825 struct mwl8k_ampdu_stream *stream = NULL;
1826 bool start_ba_session = false;
1827 bool mgmtframe = false;
1828 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1829
1830 wh = (struct ieee80211_hdr *)skb->data;
1831 if (ieee80211_is_data_qos(wh->frame_control))
1832 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1833 else
1834 qos = 0;
1835
1836 if (ieee80211_is_mgmt(wh->frame_control))
1837 mgmtframe = true;
1838
1839 if (priv->ap_fw)
1840 mwl8k_encapsulate_tx_frame(priv, skb);
1841 else
1842 mwl8k_add_dma_header(priv, skb, 0, 0);
1843
1844 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1845
1846 tx_info = IEEE80211_SKB_CB(skb);
1847 sta = tx_info->control.sta;
1848 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1849
1850 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1851 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1852 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1853 mwl8k_vif->seqno += 0x10;
1854 }
1855
1856 /* Setup firmware control bit fields for each frame type. */
1857 txstatus = 0;
1858 txdatarate = 0;
1859 if (ieee80211_is_mgmt(wh->frame_control) ||
1860 ieee80211_is_ctl(wh->frame_control)) {
1861 txdatarate = 0;
1862 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1863 } else if (ieee80211_is_data(wh->frame_control)) {
1864 txdatarate = 1;
1865 if (is_multicast_ether_addr(wh->addr1))
1866 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1867
1868 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1869 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1870 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1871 else
1872 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1873 }
1874
1875 /* Queue ADDBA request in the respective data queue. While setting up
1876 * the ampdu stream, mac80211 queues further packets for that
1877 * particular ra/tid pair. However, packets piled up in the hardware
1878 * for that ra/tid pair will still go out. ADDBA request and the
1879 * related data packets going out from different queues asynchronously
1880 * will cause a shift in the receiver window which might result in
1881 * ampdu packets getting dropped at the receiver after the stream has
1882 * been setup.
1883 */
1884 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1885 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1886 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1887 priv->ap_fw)) {
1888 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1889 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1890 index = mwl8k_tid_queue_mapping(tid);
1891 }
1892
1893 txpriority = index;
1894
1895 if (priv->ap_fw && sta && sta->ht_cap.ht_supported
1896 && skb->protocol != cpu_to_be16(ETH_P_PAE)
1897 && ieee80211_is_data_qos(wh->frame_control)) {
1898 tid = qos & 0xf;
1899 mwl8k_tx_count_packet(sta, tid);
1900 spin_lock(&priv->stream_lock);
1901 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1902 if (stream != NULL) {
1903 if (stream->state == AMPDU_STREAM_ACTIVE) {
1904 txpriority = stream->txq_idx;
1905 index = stream->txq_idx;
1906 } else if (stream->state == AMPDU_STREAM_NEW) {
1907 /* We get here if the driver sends us packets
1908 * after we've initiated a stream, but before
1909 * our ampdu_action routine has been called
1910 * with IEEE80211_AMPDU_TX_START to get the SSN
1911 * for the ADDBA request. So this packet can
1912 * go out with no risk of sequence number
1913 * mismatch. No special handling is required.
1914 */
1915 } else {
1916 /* Drop packets that would go out after the
1917 * ADDBA request was sent but before the ADDBA
1918 * response is received. If we don't do this,
1919 * the recipient would probably receive it
1920 * after the ADDBA request with SSN 0. This
1921 * will cause the recipient's BA receive window
1922 * to shift, which would cause the subsequent
1923 * packets in the BA stream to be discarded.
1924 * mac80211 queues our packets for us in this
1925 * case, so this is really just a safety check.
1926 */
1927 wiphy_warn(hw->wiphy,
1928 "Cannot send packet while ADDBA "
1929 "dialog is underway.\n");
1930 spin_unlock(&priv->stream_lock);
1931 dev_kfree_skb(skb);
1932 return;
1933 }
1934 } else {
1935 /* Defer calling mwl8k_start_stream so that the current
1936 * skb can go out before the ADDBA request. This
1937 * prevents sequence number mismatch at the recepient
1938 * as described above.
1939 */
1940 if (mwl8k_ampdu_allowed(sta, tid)) {
1941 stream = mwl8k_add_stream(hw, sta, tid);
1942 if (stream != NULL)
1943 start_ba_session = true;
1944 }
1945 }
1946 spin_unlock(&priv->stream_lock);
1947 }
1948
1949 dma = pci_map_single(priv->pdev, skb->data,
1950 skb->len, PCI_DMA_TODEVICE);
1951
1952 if (pci_dma_mapping_error(priv->pdev, dma)) {
1953 wiphy_debug(hw->wiphy,
1954 "failed to dma map skb, dropping TX frame.\n");
1955 if (start_ba_session) {
1956 spin_lock(&priv->stream_lock);
1957 mwl8k_remove_stream(hw, stream);
1958 spin_unlock(&priv->stream_lock);
1959 }
1960 dev_kfree_skb(skb);
1961 return;
1962 }
1963
1964 spin_lock_bh(&priv->tx_lock);
1965
1966 txq = priv->txq + index;
1967
1968 /* Mgmt frames that go out frequently are probe
1969 * responses. Other mgmt frames got out relatively
1970 * infrequently. Hence reserve 2 buffers so that
1971 * other mgmt frames do not get dropped due to an
1972 * already queued probe response in one of the
1973 * reserved buffers.
1974 */
1975
1976 if (txq->len >= MWL8K_TX_DESCS - 2) {
1977 if (mgmtframe == false ||
1978 txq->len == MWL8K_TX_DESCS) {
1979 if (start_ba_session) {
1980 spin_lock(&priv->stream_lock);
1981 mwl8k_remove_stream(hw, stream);
1982 spin_unlock(&priv->stream_lock);
1983 }
1984 spin_unlock_bh(&priv->tx_lock);
1985 dev_kfree_skb(skb);
1986 return;
1987 }
1988 }
1989
1990 BUG_ON(txq->skb[txq->tail] != NULL);
1991 txq->skb[txq->tail] = skb;
1992
1993 tx = txq->txd + txq->tail;
1994 tx->data_rate = txdatarate;
1995 tx->tx_priority = txpriority;
1996 tx->qos_control = cpu_to_le16(qos);
1997 tx->pkt_phys_addr = cpu_to_le32(dma);
1998 tx->pkt_len = cpu_to_le16(skb->len);
1999 tx->rate_info = 0;
2000 if (!priv->ap_fw && tx_info->control.sta != NULL)
2001 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2002 else
2003 tx->peer_id = 0;
2004
2005 if (priv->ap_fw)
2006 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2007 MWL8K_HW_TIMER_REGISTER));
2008
2009 wmb();
2010 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2011
2012 txq->len++;
2013 priv->pending_tx_pkts++;
2014
2015 txq->tail++;
2016 if (txq->tail == MWL8K_TX_DESCS)
2017 txq->tail = 0;
2018
2019 mwl8k_tx_start(priv);
2020
2021 spin_unlock_bh(&priv->tx_lock);
2022
2023 /* Initiate the ampdu session here */
2024 if (start_ba_session) {
2025 spin_lock(&priv->stream_lock);
2026 if (mwl8k_start_stream(hw, stream))
2027 mwl8k_remove_stream(hw, stream);
2028 spin_unlock(&priv->stream_lock);
2029 }
2030 }
2031
2032
2033 /*
2034 * Firmware access.
2035 *
2036 * We have the following requirements for issuing firmware commands:
2037 * - Some commands require that the packet transmit path is idle when
2038 * the command is issued. (For simplicity, we'll just quiesce the
2039 * transmit path for every command.)
2040 * - There are certain sequences of commands that need to be issued to
2041 * the hardware sequentially, with no other intervening commands.
2042 *
2043 * This leads to an implementation of a "firmware lock" as a mutex that
2044 * can be taken recursively, and which is taken by both the low-level
2045 * command submission function (mwl8k_post_cmd) as well as any users of
2046 * that function that require issuing of an atomic sequence of commands,
2047 * and quiesces the transmit path whenever it's taken.
2048 */
2049 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2050 {
2051 struct mwl8k_priv *priv = hw->priv;
2052
2053 if (priv->fw_mutex_owner != current) {
2054 int rc;
2055
2056 mutex_lock(&priv->fw_mutex);
2057 ieee80211_stop_queues(hw);
2058
2059 rc = mwl8k_tx_wait_empty(hw);
2060 if (rc) {
2061 ieee80211_wake_queues(hw);
2062 mutex_unlock(&priv->fw_mutex);
2063
2064 return rc;
2065 }
2066
2067 priv->fw_mutex_owner = current;
2068 }
2069
2070 priv->fw_mutex_depth++;
2071
2072 return 0;
2073 }
2074
2075 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2076 {
2077 struct mwl8k_priv *priv = hw->priv;
2078
2079 if (!--priv->fw_mutex_depth) {
2080 ieee80211_wake_queues(hw);
2081 priv->fw_mutex_owner = NULL;
2082 mutex_unlock(&priv->fw_mutex);
2083 }
2084 }
2085
2086
2087 /*
2088 * Command processing.
2089 */
2090
2091 /* Timeout firmware commands after 10s */
2092 #define MWL8K_CMD_TIMEOUT_MS 10000
2093
2094 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2095 {
2096 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2097 struct mwl8k_priv *priv = hw->priv;
2098 void __iomem *regs = priv->regs;
2099 dma_addr_t dma_addr;
2100 unsigned int dma_size;
2101 int rc;
2102 unsigned long timeout = 0;
2103 u8 buf[32];
2104
2105 cmd->result = (__force __le16) 0xffff;
2106 dma_size = le16_to_cpu(cmd->length);
2107 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2108 PCI_DMA_BIDIRECTIONAL);
2109 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2110 return -ENOMEM;
2111
2112 rc = mwl8k_fw_lock(hw);
2113 if (rc) {
2114 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2115 PCI_DMA_BIDIRECTIONAL);
2116 return rc;
2117 }
2118
2119 priv->hostcmd_wait = &cmd_wait;
2120 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2121 iowrite32(MWL8K_H2A_INT_DOORBELL,
2122 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2123 iowrite32(MWL8K_H2A_INT_DUMMY,
2124 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2125
2126 timeout = wait_for_completion_timeout(&cmd_wait,
2127 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2128
2129 priv->hostcmd_wait = NULL;
2130
2131 mwl8k_fw_unlock(hw);
2132
2133 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2134 PCI_DMA_BIDIRECTIONAL);
2135
2136 if (!timeout) {
2137 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2138 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2139 MWL8K_CMD_TIMEOUT_MS);
2140 rc = -ETIMEDOUT;
2141 } else {
2142 int ms;
2143
2144 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2145
2146 rc = cmd->result ? -EINVAL : 0;
2147 if (rc)
2148 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2149 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2150 le16_to_cpu(cmd->result));
2151 else if (ms > 2000)
2152 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2153 mwl8k_cmd_name(cmd->code,
2154 buf, sizeof(buf)),
2155 ms);
2156 }
2157
2158 return rc;
2159 }
2160
2161 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2162 struct ieee80211_vif *vif,
2163 struct mwl8k_cmd_pkt *cmd)
2164 {
2165 if (vif != NULL)
2166 cmd->macid = MWL8K_VIF(vif)->macid;
2167 return mwl8k_post_cmd(hw, cmd);
2168 }
2169
2170 /*
2171 * Setup code shared between STA and AP firmware images.
2172 */
2173 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2174 {
2175 struct mwl8k_priv *priv = hw->priv;
2176
2177 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2178 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2179
2180 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2181 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2182
2183 priv->band_24.band = IEEE80211_BAND_2GHZ;
2184 priv->band_24.channels = priv->channels_24;
2185 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2186 priv->band_24.bitrates = priv->rates_24;
2187 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2188
2189 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2190 }
2191
2192 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2193 {
2194 struct mwl8k_priv *priv = hw->priv;
2195
2196 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2197 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2198
2199 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2200 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2201
2202 priv->band_50.band = IEEE80211_BAND_5GHZ;
2203 priv->band_50.channels = priv->channels_50;
2204 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2205 priv->band_50.bitrates = priv->rates_50;
2206 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2207
2208 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2209 }
2210
2211 /*
2212 * CMD_GET_HW_SPEC (STA version).
2213 */
2214 struct mwl8k_cmd_get_hw_spec_sta {
2215 struct mwl8k_cmd_pkt header;
2216 __u8 hw_rev;
2217 __u8 host_interface;
2218 __le16 num_mcaddrs;
2219 __u8 perm_addr[ETH_ALEN];
2220 __le16 region_code;
2221 __le32 fw_rev;
2222 __le32 ps_cookie;
2223 __le32 caps;
2224 __u8 mcs_bitmap[16];
2225 __le32 rx_queue_ptr;
2226 __le32 num_tx_queues;
2227 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2228 __le32 caps2;
2229 __le32 num_tx_desc_per_queue;
2230 __le32 total_rxd;
2231 } __packed;
2232
2233 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2234 #define MWL8K_CAP_GREENFIELD 0x08000000
2235 #define MWL8K_CAP_AMPDU 0x04000000
2236 #define MWL8K_CAP_RX_STBC 0x01000000
2237 #define MWL8K_CAP_TX_STBC 0x00800000
2238 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2239 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2240 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2241 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2242 #define MWL8K_CAP_DELAY_BA 0x00003000
2243 #define MWL8K_CAP_MIMO 0x00000200
2244 #define MWL8K_CAP_40MHZ 0x00000100
2245 #define MWL8K_CAP_BAND_MASK 0x00000007
2246 #define MWL8K_CAP_5GHZ 0x00000004
2247 #define MWL8K_CAP_2GHZ4 0x00000001
2248
2249 static void
2250 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2251 struct ieee80211_supported_band *band, u32 cap)
2252 {
2253 int rx_streams;
2254 int tx_streams;
2255
2256 band->ht_cap.ht_supported = 1;
2257
2258 if (cap & MWL8K_CAP_MAX_AMSDU)
2259 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2260 if (cap & MWL8K_CAP_GREENFIELD)
2261 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2262 if (cap & MWL8K_CAP_AMPDU) {
2263 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2264 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2265 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2266 }
2267 if (cap & MWL8K_CAP_RX_STBC)
2268 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2269 if (cap & MWL8K_CAP_TX_STBC)
2270 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2271 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2272 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2273 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2274 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2275 if (cap & MWL8K_CAP_DELAY_BA)
2276 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2277 if (cap & MWL8K_CAP_40MHZ)
2278 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2279
2280 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2281 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2282
2283 band->ht_cap.mcs.rx_mask[0] = 0xff;
2284 if (rx_streams >= 2)
2285 band->ht_cap.mcs.rx_mask[1] = 0xff;
2286 if (rx_streams >= 3)
2287 band->ht_cap.mcs.rx_mask[2] = 0xff;
2288 band->ht_cap.mcs.rx_mask[4] = 0x01;
2289 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2290
2291 if (rx_streams != tx_streams) {
2292 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2293 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2294 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2295 }
2296 }
2297
2298 static void
2299 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2300 {
2301 struct mwl8k_priv *priv = hw->priv;
2302
2303 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2304 mwl8k_setup_2ghz_band(hw);
2305 if (caps & MWL8K_CAP_MIMO)
2306 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2307 }
2308
2309 if (caps & MWL8K_CAP_5GHZ) {
2310 mwl8k_setup_5ghz_band(hw);
2311 if (caps & MWL8K_CAP_MIMO)
2312 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2313 }
2314 }
2315
2316 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2317 {
2318 struct mwl8k_priv *priv = hw->priv;
2319 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2320 int rc;
2321 int i;
2322
2323 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2324 if (cmd == NULL)
2325 return -ENOMEM;
2326
2327 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2328 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2329
2330 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2331 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2332 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2333 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2334 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2335 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2336 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2337 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2338
2339 rc = mwl8k_post_cmd(hw, &cmd->header);
2340
2341 if (!rc) {
2342 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2343 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2344 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2345 priv->hw_rev = cmd->hw_rev;
2346 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2347 priv->ap_macids_supported = 0x00000000;
2348 priv->sta_macids_supported = 0x00000001;
2349 }
2350
2351 kfree(cmd);
2352 return rc;
2353 }
2354
2355 /*
2356 * CMD_GET_HW_SPEC (AP version).
2357 */
2358 struct mwl8k_cmd_get_hw_spec_ap {
2359 struct mwl8k_cmd_pkt header;
2360 __u8 hw_rev;
2361 __u8 host_interface;
2362 __le16 num_wcb;
2363 __le16 num_mcaddrs;
2364 __u8 perm_addr[ETH_ALEN];
2365 __le16 region_code;
2366 __le16 num_antenna;
2367 __le32 fw_rev;
2368 __le32 wcbbase0;
2369 __le32 rxwrptr;
2370 __le32 rxrdptr;
2371 __le32 ps_cookie;
2372 __le32 wcbbase1;
2373 __le32 wcbbase2;
2374 __le32 wcbbase3;
2375 __le32 fw_api_version;
2376 __le32 caps;
2377 __le32 num_of_ampdu_queues;
2378 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2379 } __packed;
2380
2381 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2382 {
2383 struct mwl8k_priv *priv = hw->priv;
2384 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2385 int rc, i;
2386 u32 api_version;
2387
2388 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2389 if (cmd == NULL)
2390 return -ENOMEM;
2391
2392 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2393 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2394
2395 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2396 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2397
2398 rc = mwl8k_post_cmd(hw, &cmd->header);
2399
2400 if (!rc) {
2401 int off;
2402
2403 api_version = le32_to_cpu(cmd->fw_api_version);
2404 if (priv->device_info->fw_api_ap != api_version) {
2405 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2406 " Expected %d got %d.\n", MWL8K_NAME,
2407 priv->device_info->part_name,
2408 priv->device_info->fw_api_ap,
2409 api_version);
2410 rc = -EINVAL;
2411 goto done;
2412 }
2413 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2414 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2415 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2416 priv->hw_rev = cmd->hw_rev;
2417 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2418 priv->ap_macids_supported = 0x000000ff;
2419 priv->sta_macids_supported = 0x00000000;
2420 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2421 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2422 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2423 " but we only support %d.\n",
2424 priv->num_ampdu_queues,
2425 MWL8K_MAX_AMPDU_QUEUES);
2426 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2427 }
2428 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2429 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2430
2431 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2432 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2433
2434 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2435 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2436 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2437 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2438
2439 for (i = 0; i < priv->num_ampdu_queues; i++)
2440 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2441 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2442 }
2443
2444 done:
2445 kfree(cmd);
2446 return rc;
2447 }
2448
2449 /*
2450 * CMD_SET_HW_SPEC.
2451 */
2452 struct mwl8k_cmd_set_hw_spec {
2453 struct mwl8k_cmd_pkt header;
2454 __u8 hw_rev;
2455 __u8 host_interface;
2456 __le16 num_mcaddrs;
2457 __u8 perm_addr[ETH_ALEN];
2458 __le16 region_code;
2459 __le32 fw_rev;
2460 __le32 ps_cookie;
2461 __le32 caps;
2462 __le32 rx_queue_ptr;
2463 __le32 num_tx_queues;
2464 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2465 __le32 flags;
2466 __le32 num_tx_desc_per_queue;
2467 __le32 total_rxd;
2468 } __packed;
2469
2470 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2471 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2472 * the packets that are queued for more than 500ms, will be dropped in the
2473 * hardware. This helps minimizing the issues caused due to head-of-line
2474 * blocking where a slow client can hog the bandwidth and affect traffic to a
2475 * faster client.
2476 */
2477 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2478 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2479 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2480 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2481 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2482
2483 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2484 {
2485 struct mwl8k_priv *priv = hw->priv;
2486 struct mwl8k_cmd_set_hw_spec *cmd;
2487 int rc;
2488 int i;
2489
2490 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2491 if (cmd == NULL)
2492 return -ENOMEM;
2493
2494 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2495 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2496
2497 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2498 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2499 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2500
2501 /*
2502 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2503 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2504 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2505 * priority is interpreted the right way in firmware.
2506 */
2507 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2508 int j = mwl8k_tx_queues(priv) - 1 - i;
2509 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2510 }
2511
2512 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2513 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2514 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2515 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2516 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2517 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2518 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2519
2520 rc = mwl8k_post_cmd(hw, &cmd->header);
2521 kfree(cmd);
2522
2523 return rc;
2524 }
2525
2526 /*
2527 * CMD_MAC_MULTICAST_ADR.
2528 */
2529 struct mwl8k_cmd_mac_multicast_adr {
2530 struct mwl8k_cmd_pkt header;
2531 __le16 action;
2532 __le16 numaddr;
2533 __u8 addr[0][ETH_ALEN];
2534 };
2535
2536 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2537 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2538 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2539 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2540
2541 static struct mwl8k_cmd_pkt *
2542 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2543 struct netdev_hw_addr_list *mc_list)
2544 {
2545 struct mwl8k_priv *priv = hw->priv;
2546 struct mwl8k_cmd_mac_multicast_adr *cmd;
2547 int size;
2548 int mc_count = 0;
2549
2550 if (mc_list)
2551 mc_count = netdev_hw_addr_list_count(mc_list);
2552
2553 if (allmulti || mc_count > priv->num_mcaddrs) {
2554 allmulti = 1;
2555 mc_count = 0;
2556 }
2557
2558 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2559
2560 cmd = kzalloc(size, GFP_ATOMIC);
2561 if (cmd == NULL)
2562 return NULL;
2563
2564 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2565 cmd->header.length = cpu_to_le16(size);
2566 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2567 MWL8K_ENABLE_RX_BROADCAST);
2568
2569 if (allmulti) {
2570 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2571 } else if (mc_count) {
2572 struct netdev_hw_addr *ha;
2573 int i = 0;
2574
2575 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2576 cmd->numaddr = cpu_to_le16(mc_count);
2577 netdev_hw_addr_list_for_each(ha, mc_list) {
2578 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2579 }
2580 }
2581
2582 return &cmd->header;
2583 }
2584
2585 /*
2586 * CMD_GET_STAT.
2587 */
2588 struct mwl8k_cmd_get_stat {
2589 struct mwl8k_cmd_pkt header;
2590 __le32 stats[64];
2591 } __packed;
2592
2593 #define MWL8K_STAT_ACK_FAILURE 9
2594 #define MWL8K_STAT_RTS_FAILURE 12
2595 #define MWL8K_STAT_FCS_ERROR 24
2596 #define MWL8K_STAT_RTS_SUCCESS 11
2597
2598 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2599 struct ieee80211_low_level_stats *stats)
2600 {
2601 struct mwl8k_cmd_get_stat *cmd;
2602 int rc;
2603
2604 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2605 if (cmd == NULL)
2606 return -ENOMEM;
2607
2608 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2609 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2610
2611 rc = mwl8k_post_cmd(hw, &cmd->header);
2612 if (!rc) {
2613 stats->dot11ACKFailureCount =
2614 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2615 stats->dot11RTSFailureCount =
2616 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2617 stats->dot11FCSErrorCount =
2618 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2619 stats->dot11RTSSuccessCount =
2620 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2621 }
2622 kfree(cmd);
2623
2624 return rc;
2625 }
2626
2627 /*
2628 * CMD_RADIO_CONTROL.
2629 */
2630 struct mwl8k_cmd_radio_control {
2631 struct mwl8k_cmd_pkt header;
2632 __le16 action;
2633 __le16 control;
2634 __le16 radio_on;
2635 } __packed;
2636
2637 static int
2638 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2639 {
2640 struct mwl8k_priv *priv = hw->priv;
2641 struct mwl8k_cmd_radio_control *cmd;
2642 int rc;
2643
2644 if (enable == priv->radio_on && !force)
2645 return 0;
2646
2647 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2648 if (cmd == NULL)
2649 return -ENOMEM;
2650
2651 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2652 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2653 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2654 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2655 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2656
2657 rc = mwl8k_post_cmd(hw, &cmd->header);
2658 kfree(cmd);
2659
2660 if (!rc)
2661 priv->radio_on = enable;
2662
2663 return rc;
2664 }
2665
2666 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2667 {
2668 return mwl8k_cmd_radio_control(hw, 0, 0);
2669 }
2670
2671 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2672 {
2673 return mwl8k_cmd_radio_control(hw, 1, 0);
2674 }
2675
2676 static int
2677 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2678 {
2679 struct mwl8k_priv *priv = hw->priv;
2680
2681 priv->radio_short_preamble = short_preamble;
2682
2683 return mwl8k_cmd_radio_control(hw, 1, 1);
2684 }
2685
2686 /*
2687 * CMD_RF_TX_POWER.
2688 */
2689 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2690
2691 struct mwl8k_cmd_rf_tx_power {
2692 struct mwl8k_cmd_pkt header;
2693 __le16 action;
2694 __le16 support_level;
2695 __le16 current_level;
2696 __le16 reserved;
2697 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2698 } __packed;
2699
2700 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2701 {
2702 struct mwl8k_cmd_rf_tx_power *cmd;
2703 int rc;
2704
2705 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2706 if (cmd == NULL)
2707 return -ENOMEM;
2708
2709 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2710 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2711 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2712 cmd->support_level = cpu_to_le16(dBm);
2713
2714 rc = mwl8k_post_cmd(hw, &cmd->header);
2715 kfree(cmd);
2716
2717 return rc;
2718 }
2719
2720 /*
2721 * CMD_TX_POWER.
2722 */
2723 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2724
2725 struct mwl8k_cmd_tx_power {
2726 struct mwl8k_cmd_pkt header;
2727 __le16 action;
2728 __le16 band;
2729 __le16 channel;
2730 __le16 bw;
2731 __le16 sub_ch;
2732 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2733 } __packed;
2734
2735 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2736 struct ieee80211_conf *conf,
2737 unsigned short pwr)
2738 {
2739 struct ieee80211_channel *channel = conf->channel;
2740 struct mwl8k_cmd_tx_power *cmd;
2741 int rc;
2742 int i;
2743
2744 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2745 if (cmd == NULL)
2746 return -ENOMEM;
2747
2748 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2749 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2750 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2751
2752 if (channel->band == IEEE80211_BAND_2GHZ)
2753 cmd->band = cpu_to_le16(0x1);
2754 else if (channel->band == IEEE80211_BAND_5GHZ)
2755 cmd->band = cpu_to_le16(0x4);
2756
2757 cmd->channel = channel->hw_value;
2758
2759 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2760 conf->channel_type == NL80211_CHAN_HT20) {
2761 cmd->bw = cpu_to_le16(0x2);
2762 } else {
2763 cmd->bw = cpu_to_le16(0x4);
2764 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2765 cmd->sub_ch = cpu_to_le16(0x3);
2766 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2767 cmd->sub_ch = cpu_to_le16(0x1);
2768 }
2769
2770 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2771 cmd->power_level_list[i] = cpu_to_le16(pwr);
2772
2773 rc = mwl8k_post_cmd(hw, &cmd->header);
2774 kfree(cmd);
2775
2776 return rc;
2777 }
2778
2779 /*
2780 * CMD_RF_ANTENNA.
2781 */
2782 struct mwl8k_cmd_rf_antenna {
2783 struct mwl8k_cmd_pkt header;
2784 __le16 antenna;
2785 __le16 mode;
2786 } __packed;
2787
2788 #define MWL8K_RF_ANTENNA_RX 1
2789 #define MWL8K_RF_ANTENNA_TX 2
2790
2791 static int
2792 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2793 {
2794 struct mwl8k_cmd_rf_antenna *cmd;
2795 int rc;
2796
2797 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2798 if (cmd == NULL)
2799 return -ENOMEM;
2800
2801 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2802 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2803 cmd->antenna = cpu_to_le16(antenna);
2804 cmd->mode = cpu_to_le16(mask);
2805
2806 rc = mwl8k_post_cmd(hw, &cmd->header);
2807 kfree(cmd);
2808
2809 return rc;
2810 }
2811
2812 /*
2813 * CMD_SET_BEACON.
2814 */
2815 struct mwl8k_cmd_set_beacon {
2816 struct mwl8k_cmd_pkt header;
2817 __le16 beacon_len;
2818 __u8 beacon[0];
2819 };
2820
2821 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2822 struct ieee80211_vif *vif, u8 *beacon, int len)
2823 {
2824 struct mwl8k_cmd_set_beacon *cmd;
2825 int rc;
2826
2827 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2828 if (cmd == NULL)
2829 return -ENOMEM;
2830
2831 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2832 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2833 cmd->beacon_len = cpu_to_le16(len);
2834 memcpy(cmd->beacon, beacon, len);
2835
2836 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2837 kfree(cmd);
2838
2839 return rc;
2840 }
2841
2842 /*
2843 * CMD_SET_PRE_SCAN.
2844 */
2845 struct mwl8k_cmd_set_pre_scan {
2846 struct mwl8k_cmd_pkt header;
2847 } __packed;
2848
2849 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2850 {
2851 struct mwl8k_cmd_set_pre_scan *cmd;
2852 int rc;
2853
2854 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2855 if (cmd == NULL)
2856 return -ENOMEM;
2857
2858 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2859 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2860
2861 rc = mwl8k_post_cmd(hw, &cmd->header);
2862 kfree(cmd);
2863
2864 return rc;
2865 }
2866
2867 /*
2868 * CMD_SET_POST_SCAN.
2869 */
2870 struct mwl8k_cmd_set_post_scan {
2871 struct mwl8k_cmd_pkt header;
2872 __le32 isibss;
2873 __u8 bssid[ETH_ALEN];
2874 } __packed;
2875
2876 static int
2877 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2878 {
2879 struct mwl8k_cmd_set_post_scan *cmd;
2880 int rc;
2881
2882 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2883 if (cmd == NULL)
2884 return -ENOMEM;
2885
2886 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2887 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2888 cmd->isibss = 0;
2889 memcpy(cmd->bssid, mac, ETH_ALEN);
2890
2891 rc = mwl8k_post_cmd(hw, &cmd->header);
2892 kfree(cmd);
2893
2894 return rc;
2895 }
2896
2897 /*
2898 * CMD_SET_RF_CHANNEL.
2899 */
2900 struct mwl8k_cmd_set_rf_channel {
2901 struct mwl8k_cmd_pkt header;
2902 __le16 action;
2903 __u8 current_channel;
2904 __le32 channel_flags;
2905 } __packed;
2906
2907 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2908 struct ieee80211_conf *conf)
2909 {
2910 struct ieee80211_channel *channel = conf->channel;
2911 struct mwl8k_cmd_set_rf_channel *cmd;
2912 int rc;
2913
2914 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2915 if (cmd == NULL)
2916 return -ENOMEM;
2917
2918 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2919 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2920 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2921 cmd->current_channel = channel->hw_value;
2922
2923 if (channel->band == IEEE80211_BAND_2GHZ)
2924 cmd->channel_flags |= cpu_to_le32(0x00000001);
2925 else if (channel->band == IEEE80211_BAND_5GHZ)
2926 cmd->channel_flags |= cpu_to_le32(0x00000004);
2927
2928 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2929 conf->channel_type == NL80211_CHAN_HT20)
2930 cmd->channel_flags |= cpu_to_le32(0x00000080);
2931 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2932 cmd->channel_flags |= cpu_to_le32(0x000001900);
2933 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2934 cmd->channel_flags |= cpu_to_le32(0x000000900);
2935
2936 rc = mwl8k_post_cmd(hw, &cmd->header);
2937 kfree(cmd);
2938
2939 return rc;
2940 }
2941
2942 /*
2943 * CMD_SET_AID.
2944 */
2945 #define MWL8K_FRAME_PROT_DISABLED 0x00
2946 #define MWL8K_FRAME_PROT_11G 0x07
2947 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2948 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2949
2950 struct mwl8k_cmd_update_set_aid {
2951 struct mwl8k_cmd_pkt header;
2952 __le16 aid;
2953
2954 /* AP's MAC address (BSSID) */
2955 __u8 bssid[ETH_ALEN];
2956 __le16 protection_mode;
2957 __u8 supp_rates[14];
2958 } __packed;
2959
2960 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2961 {
2962 int i;
2963 int j;
2964
2965 /*
2966 * Clear nonstandard rates 4 and 13.
2967 */
2968 mask &= 0x1fef;
2969
2970 for (i = 0, j = 0; i < 14; i++) {
2971 if (mask & (1 << i))
2972 rates[j++] = mwl8k_rates_24[i].hw_value;
2973 }
2974 }
2975
2976 static int
2977 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2978 struct ieee80211_vif *vif, u32 legacy_rate_mask)
2979 {
2980 struct mwl8k_cmd_update_set_aid *cmd;
2981 u16 prot_mode;
2982 int rc;
2983
2984 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2985 if (cmd == NULL)
2986 return -ENOMEM;
2987
2988 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2989 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2990 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2991 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2992
2993 if (vif->bss_conf.use_cts_prot) {
2994 prot_mode = MWL8K_FRAME_PROT_11G;
2995 } else {
2996 switch (vif->bss_conf.ht_operation_mode &
2997 IEEE80211_HT_OP_MODE_PROTECTION) {
2998 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2999 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3000 break;
3001 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3002 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3003 break;
3004 default:
3005 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3006 break;
3007 }
3008 }
3009 cmd->protection_mode = cpu_to_le16(prot_mode);
3010
3011 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3012
3013 rc = mwl8k_post_cmd(hw, &cmd->header);
3014 kfree(cmd);
3015
3016 return rc;
3017 }
3018
3019 /*
3020 * CMD_SET_RATE.
3021 */
3022 struct mwl8k_cmd_set_rate {
3023 struct mwl8k_cmd_pkt header;
3024 __u8 legacy_rates[14];
3025
3026 /* Bitmap for supported MCS codes. */
3027 __u8 mcs_set[16];
3028 __u8 reserved[16];
3029 } __packed;
3030
3031 static int
3032 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3033 u32 legacy_rate_mask, u8 *mcs_rates)
3034 {
3035 struct mwl8k_cmd_set_rate *cmd;
3036 int rc;
3037
3038 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3039 if (cmd == NULL)
3040 return -ENOMEM;
3041
3042 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3043 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3044 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3045 memcpy(cmd->mcs_set, mcs_rates, 16);
3046
3047 rc = mwl8k_post_cmd(hw, &cmd->header);
3048 kfree(cmd);
3049
3050 return rc;
3051 }
3052
3053 /*
3054 * CMD_FINALIZE_JOIN.
3055 */
3056 #define MWL8K_FJ_BEACON_MAXLEN 128
3057
3058 struct mwl8k_cmd_finalize_join {
3059 struct mwl8k_cmd_pkt header;
3060 __le32 sleep_interval; /* Number of beacon periods to sleep */
3061 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3062 } __packed;
3063
3064 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3065 int framelen, int dtim)
3066 {
3067 struct mwl8k_cmd_finalize_join *cmd;
3068 struct ieee80211_mgmt *payload = frame;
3069 int payload_len;
3070 int rc;
3071
3072 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3073 if (cmd == NULL)
3074 return -ENOMEM;
3075
3076 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3077 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3078 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3079
3080 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3081 if (payload_len < 0)
3082 payload_len = 0;
3083 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3084 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3085
3086 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3087
3088 rc = mwl8k_post_cmd(hw, &cmd->header);
3089 kfree(cmd);
3090
3091 return rc;
3092 }
3093
3094 /*
3095 * CMD_SET_RTS_THRESHOLD.
3096 */
3097 struct mwl8k_cmd_set_rts_threshold {
3098 struct mwl8k_cmd_pkt header;
3099 __le16 action;
3100 __le16 threshold;
3101 } __packed;
3102
3103 static int
3104 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3105 {
3106 struct mwl8k_cmd_set_rts_threshold *cmd;
3107 int rc;
3108
3109 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3110 if (cmd == NULL)
3111 return -ENOMEM;
3112
3113 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3114 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3115 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3116 cmd->threshold = cpu_to_le16(rts_thresh);
3117
3118 rc = mwl8k_post_cmd(hw, &cmd->header);
3119 kfree(cmd);
3120
3121 return rc;
3122 }
3123
3124 /*
3125 * CMD_SET_SLOT.
3126 */
3127 struct mwl8k_cmd_set_slot {
3128 struct mwl8k_cmd_pkt header;
3129 __le16 action;
3130 __u8 short_slot;
3131 } __packed;
3132
3133 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3134 {
3135 struct mwl8k_cmd_set_slot *cmd;
3136 int rc;
3137
3138 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3139 if (cmd == NULL)
3140 return -ENOMEM;
3141
3142 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3143 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3144 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3145 cmd->short_slot = short_slot_time;
3146
3147 rc = mwl8k_post_cmd(hw, &cmd->header);
3148 kfree(cmd);
3149
3150 return rc;
3151 }
3152
3153 /*
3154 * CMD_SET_EDCA_PARAMS.
3155 */
3156 struct mwl8k_cmd_set_edca_params {
3157 struct mwl8k_cmd_pkt header;
3158
3159 /* See MWL8K_SET_EDCA_XXX below */
3160 __le16 action;
3161
3162 /* TX opportunity in units of 32 us */
3163 __le16 txop;
3164
3165 union {
3166 struct {
3167 /* Log exponent of max contention period: 0...15 */
3168 __le32 log_cw_max;
3169
3170 /* Log exponent of min contention period: 0...15 */
3171 __le32 log_cw_min;
3172
3173 /* Adaptive interframe spacing in units of 32us */
3174 __u8 aifs;
3175
3176 /* TX queue to configure */
3177 __u8 txq;
3178 } ap;
3179 struct {
3180 /* Log exponent of max contention period: 0...15 */
3181 __u8 log_cw_max;
3182
3183 /* Log exponent of min contention period: 0...15 */
3184 __u8 log_cw_min;
3185
3186 /* Adaptive interframe spacing in units of 32us */
3187 __u8 aifs;
3188
3189 /* TX queue to configure */
3190 __u8 txq;
3191 } sta;
3192 };
3193 } __packed;
3194
3195 #define MWL8K_SET_EDCA_CW 0x01
3196 #define MWL8K_SET_EDCA_TXOP 0x02
3197 #define MWL8K_SET_EDCA_AIFS 0x04
3198
3199 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3200 MWL8K_SET_EDCA_TXOP | \
3201 MWL8K_SET_EDCA_AIFS)
3202
3203 static int
3204 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3205 __u16 cw_min, __u16 cw_max,
3206 __u8 aifs, __u16 txop)
3207 {
3208 struct mwl8k_priv *priv = hw->priv;
3209 struct mwl8k_cmd_set_edca_params *cmd;
3210 int rc;
3211
3212 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3213 if (cmd == NULL)
3214 return -ENOMEM;
3215
3216 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3217 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3218 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3219 cmd->txop = cpu_to_le16(txop);
3220 if (priv->ap_fw) {
3221 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3222 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3223 cmd->ap.aifs = aifs;
3224 cmd->ap.txq = qnum;
3225 } else {
3226 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3227 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3228 cmd->sta.aifs = aifs;
3229 cmd->sta.txq = qnum;
3230 }
3231
3232 rc = mwl8k_post_cmd(hw, &cmd->header);
3233 kfree(cmd);
3234
3235 return rc;
3236 }
3237
3238 /*
3239 * CMD_SET_WMM_MODE.
3240 */
3241 struct mwl8k_cmd_set_wmm_mode {
3242 struct mwl8k_cmd_pkt header;
3243 __le16 action;
3244 } __packed;
3245
3246 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3247 {
3248 struct mwl8k_priv *priv = hw->priv;
3249 struct mwl8k_cmd_set_wmm_mode *cmd;
3250 int rc;
3251
3252 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3253 if (cmd == NULL)
3254 return -ENOMEM;
3255
3256 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3257 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3258 cmd->action = cpu_to_le16(!!enable);
3259
3260 rc = mwl8k_post_cmd(hw, &cmd->header);
3261 kfree(cmd);
3262
3263 if (!rc)
3264 priv->wmm_enabled = enable;
3265
3266 return rc;
3267 }
3268
3269 /*
3270 * CMD_MIMO_CONFIG.
3271 */
3272 struct mwl8k_cmd_mimo_config {
3273 struct mwl8k_cmd_pkt header;
3274 __le32 action;
3275 __u8 rx_antenna_map;
3276 __u8 tx_antenna_map;
3277 } __packed;
3278
3279 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3280 {
3281 struct mwl8k_cmd_mimo_config *cmd;
3282 int rc;
3283
3284 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3285 if (cmd == NULL)
3286 return -ENOMEM;
3287
3288 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3289 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3290 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3291 cmd->rx_antenna_map = rx;
3292 cmd->tx_antenna_map = tx;
3293
3294 rc = mwl8k_post_cmd(hw, &cmd->header);
3295 kfree(cmd);
3296
3297 return rc;
3298 }
3299
3300 /*
3301 * CMD_USE_FIXED_RATE (STA version).
3302 */
3303 struct mwl8k_cmd_use_fixed_rate_sta {
3304 struct mwl8k_cmd_pkt header;
3305 __le32 action;
3306 __le32 allow_rate_drop;
3307 __le32 num_rates;
3308 struct {
3309 __le32 is_ht_rate;
3310 __le32 enable_retry;
3311 __le32 rate;
3312 __le32 retry_count;
3313 } rate_entry[8];
3314 __le32 rate_type;
3315 __le32 reserved1;
3316 __le32 reserved2;
3317 } __packed;
3318
3319 #define MWL8K_USE_AUTO_RATE 0x0002
3320 #define MWL8K_UCAST_RATE 0
3321
3322 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3323 {
3324 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3325 int rc;
3326
3327 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3328 if (cmd == NULL)
3329 return -ENOMEM;
3330
3331 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3332 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3333 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3334 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3335
3336 rc = mwl8k_post_cmd(hw, &cmd->header);
3337 kfree(cmd);
3338
3339 return rc;
3340 }
3341
3342 /*
3343 * CMD_USE_FIXED_RATE (AP version).
3344 */
3345 struct mwl8k_cmd_use_fixed_rate_ap {
3346 struct mwl8k_cmd_pkt header;
3347 __le32 action;
3348 __le32 allow_rate_drop;
3349 __le32 num_rates;
3350 struct mwl8k_rate_entry_ap {
3351 __le32 is_ht_rate;
3352 __le32 enable_retry;
3353 __le32 rate;
3354 __le32 retry_count;
3355 } rate_entry[4];
3356 u8 multicast_rate;
3357 u8 multicast_rate_type;
3358 u8 management_rate;
3359 } __packed;
3360
3361 static int
3362 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3363 {
3364 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3365 int rc;
3366
3367 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3368 if (cmd == NULL)
3369 return -ENOMEM;
3370
3371 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3372 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3373 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3374 cmd->multicast_rate = mcast;
3375 cmd->management_rate = mgmt;
3376
3377 rc = mwl8k_post_cmd(hw, &cmd->header);
3378 kfree(cmd);
3379
3380 return rc;
3381 }
3382
3383 /*
3384 * CMD_ENABLE_SNIFFER.
3385 */
3386 struct mwl8k_cmd_enable_sniffer {
3387 struct mwl8k_cmd_pkt header;
3388 __le32 action;
3389 } __packed;
3390
3391 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3392 {
3393 struct mwl8k_cmd_enable_sniffer *cmd;
3394 int rc;
3395
3396 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3397 if (cmd == NULL)
3398 return -ENOMEM;
3399
3400 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3401 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3402 cmd->action = cpu_to_le32(!!enable);
3403
3404 rc = mwl8k_post_cmd(hw, &cmd->header);
3405 kfree(cmd);
3406
3407 return rc;
3408 }
3409
3410 /*
3411 * CMD_SET_MAC_ADDR.
3412 */
3413 struct mwl8k_cmd_set_mac_addr {
3414 struct mwl8k_cmd_pkt header;
3415 union {
3416 struct {
3417 __le16 mac_type;
3418 __u8 mac_addr[ETH_ALEN];
3419 } mbss;
3420 __u8 mac_addr[ETH_ALEN];
3421 };
3422 } __packed;
3423
3424 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3425 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3426 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3427 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3428
3429 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3430 struct ieee80211_vif *vif, u8 *mac)
3431 {
3432 struct mwl8k_priv *priv = hw->priv;
3433 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3434 struct mwl8k_cmd_set_mac_addr *cmd;
3435 int mac_type;
3436 int rc;
3437
3438 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3439 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3440 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3441 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3442 else
3443 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3444 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3445 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3446 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3447 else
3448 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3449 }
3450
3451 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3452 if (cmd == NULL)
3453 return -ENOMEM;
3454
3455 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3456 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3457 if (priv->ap_fw) {
3458 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3459 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3460 } else {
3461 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3462 }
3463
3464 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3465 kfree(cmd);
3466
3467 return rc;
3468 }
3469
3470 /*
3471 * CMD_SET_RATEADAPT_MODE.
3472 */
3473 struct mwl8k_cmd_set_rate_adapt_mode {
3474 struct mwl8k_cmd_pkt header;
3475 __le16 action;
3476 __le16 mode;
3477 } __packed;
3478
3479 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3480 {
3481 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3482 int rc;
3483
3484 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3485 if (cmd == NULL)
3486 return -ENOMEM;
3487
3488 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3489 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3490 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3491 cmd->mode = cpu_to_le16(mode);
3492
3493 rc = mwl8k_post_cmd(hw, &cmd->header);
3494 kfree(cmd);
3495
3496 return rc;
3497 }
3498
3499 /*
3500 * CMD_GET_WATCHDOG_BITMAP.
3501 */
3502 struct mwl8k_cmd_get_watchdog_bitmap {
3503 struct mwl8k_cmd_pkt header;
3504 u8 bitmap;
3505 } __packed;
3506
3507 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3508 {
3509 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3510 int rc;
3511
3512 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3513 if (cmd == NULL)
3514 return -ENOMEM;
3515
3516 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3517 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3518
3519 rc = mwl8k_post_cmd(hw, &cmd->header);
3520 if (!rc)
3521 *bitmap = cmd->bitmap;
3522
3523 kfree(cmd);
3524
3525 return rc;
3526 }
3527
3528 #define INVALID_BA 0xAA
3529 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3530 {
3531 int rc;
3532 u8 bitmap = 0, stream_index;
3533 struct mwl8k_ampdu_stream *streams;
3534 struct mwl8k_priv *priv =
3535 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3536
3537 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3538 if (rc)
3539 return;
3540
3541 if (bitmap == INVALID_BA)
3542 return;
3543
3544 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3545 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3546
3547 BUG_ON(stream_index >= priv->num_ampdu_queues);
3548
3549 streams = &priv->ampdu[stream_index];
3550
3551 if (streams->state == AMPDU_STREAM_ACTIVE)
3552 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3553
3554 return;
3555 }
3556
3557
3558 /*
3559 * CMD_BSS_START.
3560 */
3561 struct mwl8k_cmd_bss_start {
3562 struct mwl8k_cmd_pkt header;
3563 __le32 enable;
3564 } __packed;
3565
3566 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3567 struct ieee80211_vif *vif, int enable)
3568 {
3569 struct mwl8k_cmd_bss_start *cmd;
3570 int rc;
3571
3572 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3573 if (cmd == NULL)
3574 return -ENOMEM;
3575
3576 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3577 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3578 cmd->enable = cpu_to_le32(enable);
3579
3580 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3581 kfree(cmd);
3582
3583 return rc;
3584 }
3585
3586 /*
3587 * CMD_BASTREAM.
3588 */
3589
3590 /*
3591 * UPSTREAM is tx direction
3592 */
3593 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3594 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3595
3596 enum ba_stream_action_type {
3597 MWL8K_BA_CREATE,
3598 MWL8K_BA_UPDATE,
3599 MWL8K_BA_DESTROY,
3600 MWL8K_BA_FLUSH,
3601 MWL8K_BA_CHECK,
3602 };
3603
3604
3605 struct mwl8k_create_ba_stream {
3606 __le32 flags;
3607 __le32 idle_thrs;
3608 __le32 bar_thrs;
3609 __le32 window_size;
3610 u8 peer_mac_addr[6];
3611 u8 dialog_token;
3612 u8 tid;
3613 u8 queue_id;
3614 u8 param_info;
3615 __le32 ba_context;
3616 u8 reset_seq_no_flag;
3617 __le16 curr_seq_no;
3618 u8 sta_src_mac_addr[6];
3619 } __packed;
3620
3621 struct mwl8k_destroy_ba_stream {
3622 __le32 flags;
3623 __le32 ba_context;
3624 } __packed;
3625
3626 struct mwl8k_cmd_bastream {
3627 struct mwl8k_cmd_pkt header;
3628 __le32 action;
3629 union {
3630 struct mwl8k_create_ba_stream create_params;
3631 struct mwl8k_destroy_ba_stream destroy_params;
3632 };
3633 } __packed;
3634
3635 static int
3636 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3637 {
3638 struct mwl8k_cmd_bastream *cmd;
3639 int rc;
3640
3641 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3642 if (cmd == NULL)
3643 return -ENOMEM;
3644
3645 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3646 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3647
3648 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3649
3650 cmd->create_params.queue_id = stream->idx;
3651 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3652 ETH_ALEN);
3653 cmd->create_params.tid = stream->tid;
3654
3655 cmd->create_params.flags =
3656 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3657 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3658
3659 rc = mwl8k_post_cmd(hw, &cmd->header);
3660
3661 kfree(cmd);
3662
3663 return rc;
3664 }
3665
3666 static int
3667 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3668 u8 buf_size)
3669 {
3670 struct mwl8k_cmd_bastream *cmd;
3671 int rc;
3672
3673 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3674 if (cmd == NULL)
3675 return -ENOMEM;
3676
3677
3678 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3679 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3680
3681 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3682
3683 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3684 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3685 cmd->create_params.queue_id = stream->idx;
3686
3687 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3688 cmd->create_params.tid = stream->tid;
3689 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3690 cmd->create_params.reset_seq_no_flag = 1;
3691
3692 cmd->create_params.param_info =
3693 (stream->sta->ht_cap.ampdu_factor &
3694 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3695 ((stream->sta->ht_cap.ampdu_density << 2) &
3696 IEEE80211_HT_AMPDU_PARM_DENSITY);
3697
3698 cmd->create_params.flags =
3699 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3700 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3701
3702 rc = mwl8k_post_cmd(hw, &cmd->header);
3703
3704 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3705 stream->sta->addr, stream->tid);
3706 kfree(cmd);
3707
3708 return rc;
3709 }
3710
3711 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3712 struct mwl8k_ampdu_stream *stream)
3713 {
3714 struct mwl8k_cmd_bastream *cmd;
3715
3716 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3717 if (cmd == NULL)
3718 return;
3719
3720 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3721 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3722 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3723
3724 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3725 mwl8k_post_cmd(hw, &cmd->header);
3726
3727 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3728
3729 kfree(cmd);
3730 }
3731
3732 /*
3733 * CMD_SET_NEW_STN.
3734 */
3735 struct mwl8k_cmd_set_new_stn {
3736 struct mwl8k_cmd_pkt header;
3737 __le16 aid;
3738 __u8 mac_addr[6];
3739 __le16 stn_id;
3740 __le16 action;
3741 __le16 rsvd;
3742 __le32 legacy_rates;
3743 __u8 ht_rates[4];
3744 __le16 cap_info;
3745 __le16 ht_capabilities_info;
3746 __u8 mac_ht_param_info;
3747 __u8 rev;
3748 __u8 control_channel;
3749 __u8 add_channel;
3750 __le16 op_mode;
3751 __le16 stbc;
3752 __u8 add_qos_info;
3753 __u8 is_qos_sta;
3754 __le32 fw_sta_ptr;
3755 } __packed;
3756
3757 #define MWL8K_STA_ACTION_ADD 0
3758 #define MWL8K_STA_ACTION_REMOVE 2
3759
3760 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3761 struct ieee80211_vif *vif,
3762 struct ieee80211_sta *sta)
3763 {
3764 struct mwl8k_cmd_set_new_stn *cmd;
3765 u32 rates;
3766 int rc;
3767
3768 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3769 if (cmd == NULL)
3770 return -ENOMEM;
3771
3772 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3773 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3774 cmd->aid = cpu_to_le16(sta->aid);
3775 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3776 cmd->stn_id = cpu_to_le16(sta->aid);
3777 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3778 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3779 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3780 else
3781 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3782 cmd->legacy_rates = cpu_to_le32(rates);
3783 if (sta->ht_cap.ht_supported) {
3784 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3785 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3786 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3787 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3788 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3789 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3790 ((sta->ht_cap.ampdu_density & 7) << 2);
3791 cmd->is_qos_sta = 1;
3792 }
3793
3794 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3795 kfree(cmd);
3796
3797 return rc;
3798 }
3799
3800 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3801 struct ieee80211_vif *vif)
3802 {
3803 struct mwl8k_cmd_set_new_stn *cmd;
3804 int rc;
3805
3806 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3807 if (cmd == NULL)
3808 return -ENOMEM;
3809
3810 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3811 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3812 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3813
3814 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3815 kfree(cmd);
3816
3817 return rc;
3818 }
3819
3820 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3821 struct ieee80211_vif *vif, u8 *addr)
3822 {
3823 struct mwl8k_cmd_set_new_stn *cmd;
3824 int rc;
3825
3826 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3827 if (cmd == NULL)
3828 return -ENOMEM;
3829
3830 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3831 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3832 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3833 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3834
3835 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3836 kfree(cmd);
3837
3838 return rc;
3839 }
3840
3841 /*
3842 * CMD_UPDATE_ENCRYPTION.
3843 */
3844
3845 #define MAX_ENCR_KEY_LENGTH 16
3846 #define MIC_KEY_LENGTH 8
3847
3848 struct mwl8k_cmd_update_encryption {
3849 struct mwl8k_cmd_pkt header;
3850
3851 __le32 action;
3852 __le32 reserved;
3853 __u8 mac_addr[6];
3854 __u8 encr_type;
3855
3856 } __packed;
3857
3858 struct mwl8k_cmd_set_key {
3859 struct mwl8k_cmd_pkt header;
3860
3861 __le32 action;
3862 __le32 reserved;
3863 __le16 length;
3864 __le16 key_type_id;
3865 __le32 key_info;
3866 __le32 key_id;
3867 __le16 key_len;
3868 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3869 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3870 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3871 __le16 tkip_rsc_low;
3872 __le32 tkip_rsc_high;
3873 __le16 tkip_tsc_low;
3874 __le32 tkip_tsc_high;
3875 __u8 mac_addr[6];
3876 } __packed;
3877
3878 enum {
3879 MWL8K_ENCR_ENABLE,
3880 MWL8K_ENCR_SET_KEY,
3881 MWL8K_ENCR_REMOVE_KEY,
3882 MWL8K_ENCR_SET_GROUP_KEY,
3883 };
3884
3885 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3886 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3887 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3888 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3889 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3890
3891 enum {
3892 MWL8K_ALG_WEP,
3893 MWL8K_ALG_TKIP,
3894 MWL8K_ALG_CCMP,
3895 };
3896
3897 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3898 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3899 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3900 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3901 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3902
3903 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3904 struct ieee80211_vif *vif,
3905 u8 *addr,
3906 u8 encr_type)
3907 {
3908 struct mwl8k_cmd_update_encryption *cmd;
3909 int rc;
3910
3911 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3912 if (cmd == NULL)
3913 return -ENOMEM;
3914
3915 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3916 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3917 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3918 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3919 cmd->encr_type = encr_type;
3920
3921 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3922 kfree(cmd);
3923
3924 return rc;
3925 }
3926
3927 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3928 u8 *addr,
3929 struct ieee80211_key_conf *key)
3930 {
3931 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3932 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3933 cmd->length = cpu_to_le16(sizeof(*cmd) -
3934 offsetof(struct mwl8k_cmd_set_key, length));
3935 cmd->key_id = cpu_to_le32(key->keyidx);
3936 cmd->key_len = cpu_to_le16(key->keylen);
3937 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3938
3939 switch (key->cipher) {
3940 case WLAN_CIPHER_SUITE_WEP40:
3941 case WLAN_CIPHER_SUITE_WEP104:
3942 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3943 if (key->keyidx == 0)
3944 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3945
3946 break;
3947 case WLAN_CIPHER_SUITE_TKIP:
3948 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3949 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3950 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3951 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3952 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3953 | MWL8K_KEY_FLAG_TSC_VALID);
3954 break;
3955 case WLAN_CIPHER_SUITE_CCMP:
3956 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3957 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3958 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3959 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3960 break;
3961 default:
3962 return -ENOTSUPP;
3963 }
3964
3965 return 0;
3966 }
3967
3968 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3969 struct ieee80211_vif *vif,
3970 u8 *addr,
3971 struct ieee80211_key_conf *key)
3972 {
3973 struct mwl8k_cmd_set_key *cmd;
3974 int rc;
3975 int keymlen;
3976 u32 action;
3977 u8 idx;
3978 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3979
3980 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3981 if (cmd == NULL)
3982 return -ENOMEM;
3983
3984 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3985 if (rc < 0)
3986 goto done;
3987
3988 idx = key->keyidx;
3989
3990 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3991 action = MWL8K_ENCR_SET_KEY;
3992 else
3993 action = MWL8K_ENCR_SET_GROUP_KEY;
3994
3995 switch (key->cipher) {
3996 case WLAN_CIPHER_SUITE_WEP40:
3997 case WLAN_CIPHER_SUITE_WEP104:
3998 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3999 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4000 sizeof(*key) + key->keylen);
4001 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4002 }
4003
4004 keymlen = key->keylen;
4005 action = MWL8K_ENCR_SET_KEY;
4006 break;
4007 case WLAN_CIPHER_SUITE_TKIP:
4008 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4009 break;
4010 case WLAN_CIPHER_SUITE_CCMP:
4011 keymlen = key->keylen;
4012 break;
4013 default:
4014 rc = -ENOTSUPP;
4015 goto done;
4016 }
4017
4018 memcpy(cmd->key_material, key->key, keymlen);
4019 cmd->action = cpu_to_le32(action);
4020
4021 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4022 done:
4023 kfree(cmd);
4024
4025 return rc;
4026 }
4027
4028 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4029 struct ieee80211_vif *vif,
4030 u8 *addr,
4031 struct ieee80211_key_conf *key)
4032 {
4033 struct mwl8k_cmd_set_key *cmd;
4034 int rc;
4035 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4036
4037 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4038 if (cmd == NULL)
4039 return -ENOMEM;
4040
4041 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4042 if (rc < 0)
4043 goto done;
4044
4045 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4046 WLAN_CIPHER_SUITE_WEP104)
4047 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4048
4049 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4050
4051 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4052 done:
4053 kfree(cmd);
4054
4055 return rc;
4056 }
4057
4058 static int mwl8k_set_key(struct ieee80211_hw *hw,
4059 enum set_key_cmd cmd_param,
4060 struct ieee80211_vif *vif,
4061 struct ieee80211_sta *sta,
4062 struct ieee80211_key_conf *key)
4063 {
4064 int rc = 0;
4065 u8 encr_type;
4066 u8 *addr;
4067 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4068
4069 if (vif->type == NL80211_IFTYPE_STATION)
4070 return -EOPNOTSUPP;
4071
4072 if (sta == NULL)
4073 addr = hw->wiphy->perm_addr;
4074 else
4075 addr = sta->addr;
4076
4077 if (cmd_param == SET_KEY) {
4078 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4079 if (rc)
4080 goto out;
4081
4082 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4083 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4084 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4085 else
4086 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4087
4088 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4089 encr_type);
4090 if (rc)
4091 goto out;
4092
4093 mwl8k_vif->is_hw_crypto_enabled = true;
4094
4095 } else {
4096 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4097
4098 if (rc)
4099 goto out;
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,
4919 struct ieee80211_vif *vif, u16 queue,
4920 const struct ieee80211_tx_queue_params *params)
4921 {
4922 struct mwl8k_priv *priv = hw->priv;
4923 int rc;
4924
4925 rc = mwl8k_fw_lock(hw);
4926 if (!rc) {
4927 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4928 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4929
4930 if (!priv->wmm_enabled)
4931 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4932
4933 if (!rc) {
4934 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4935 rc = mwl8k_cmd_set_edca_params(hw, q,
4936 params->cw_min,
4937 params->cw_max,
4938 params->aifs,
4939 params->txop);
4940 }
4941
4942 mwl8k_fw_unlock(hw);
4943 }
4944
4945 return rc;
4946 }
4947
4948 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4949 struct ieee80211_low_level_stats *stats)
4950 {
4951 return mwl8k_cmd_get_stat(hw, stats);
4952 }
4953
4954 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4955 struct survey_info *survey)
4956 {
4957 struct mwl8k_priv *priv = hw->priv;
4958 struct ieee80211_conf *conf = &hw->conf;
4959
4960 if (idx != 0)
4961 return -ENOENT;
4962
4963 survey->channel = conf->channel;
4964 survey->filled = SURVEY_INFO_NOISE_DBM;
4965 survey->noise = priv->noise;
4966
4967 return 0;
4968 }
4969
4970 #define MAX_AMPDU_ATTEMPTS 5
4971
4972 static int
4973 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4974 enum ieee80211_ampdu_mlme_action action,
4975 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4976 u8 buf_size)
4977 {
4978
4979 int i, rc = 0;
4980 struct mwl8k_priv *priv = hw->priv;
4981 struct mwl8k_ampdu_stream *stream;
4982 u8 *addr = sta->addr;
4983
4984 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4985 return -ENOTSUPP;
4986
4987 spin_lock(&priv->stream_lock);
4988 stream = mwl8k_lookup_stream(hw, addr, tid);
4989
4990 switch (action) {
4991 case IEEE80211_AMPDU_RX_START:
4992 case IEEE80211_AMPDU_RX_STOP:
4993 break;
4994 case IEEE80211_AMPDU_TX_START:
4995 /* By the time we get here the hw queues may contain outgoing
4996 * packets for this RA/TID that are not part of this BA
4997 * session. The hw will assign sequence numbers to these
4998 * packets as they go out. So if we query the hw for its next
4999 * sequence number and use that for the SSN here, it may end up
5000 * being wrong, which will lead to sequence number mismatch at
5001 * the recipient. To avoid this, we reset the sequence number
5002 * to O for the first MPDU in this BA stream.
5003 */
5004 *ssn = 0;
5005 if (stream == NULL) {
5006 /* This means that somebody outside this driver called
5007 * ieee80211_start_tx_ba_session. This is unexpected
5008 * because we do our own rate control. Just warn and
5009 * move on.
5010 */
5011 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5012 "Proceeding anyway.\n", __func__);
5013 stream = mwl8k_add_stream(hw, sta, tid);
5014 }
5015 if (stream == NULL) {
5016 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5017 rc = -EBUSY;
5018 break;
5019 }
5020 stream->state = AMPDU_STREAM_IN_PROGRESS;
5021
5022 /* Release the lock before we do the time consuming stuff */
5023 spin_unlock(&priv->stream_lock);
5024 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5025 rc = mwl8k_check_ba(hw, stream);
5026
5027 if (!rc)
5028 break;
5029 /*
5030 * HW queues take time to be flushed, give them
5031 * sufficient time
5032 */
5033
5034 msleep(1000);
5035 }
5036 spin_lock(&priv->stream_lock);
5037 if (rc) {
5038 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5039 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5040 mwl8k_remove_stream(hw, stream);
5041 rc = -EBUSY;
5042 break;
5043 }
5044 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5045 break;
5046 case IEEE80211_AMPDU_TX_STOP:
5047 if (stream == NULL)
5048 break;
5049 if (stream->state == AMPDU_STREAM_ACTIVE) {
5050 spin_unlock(&priv->stream_lock);
5051 mwl8k_destroy_ba(hw, stream);
5052 spin_lock(&priv->stream_lock);
5053 }
5054 mwl8k_remove_stream(hw, stream);
5055 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5056 break;
5057 case IEEE80211_AMPDU_TX_OPERATIONAL:
5058 BUG_ON(stream == NULL);
5059 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5060 spin_unlock(&priv->stream_lock);
5061 rc = mwl8k_create_ba(hw, stream, buf_size);
5062 spin_lock(&priv->stream_lock);
5063 if (!rc)
5064 stream->state = AMPDU_STREAM_ACTIVE;
5065 else {
5066 spin_unlock(&priv->stream_lock);
5067 mwl8k_destroy_ba(hw, stream);
5068 spin_lock(&priv->stream_lock);
5069 wiphy_debug(hw->wiphy,
5070 "Failed adding stream for sta %pM tid %d\n",
5071 addr, tid);
5072 mwl8k_remove_stream(hw, stream);
5073 }
5074 break;
5075
5076 default:
5077 rc = -ENOTSUPP;
5078 }
5079
5080 spin_unlock(&priv->stream_lock);
5081 return rc;
5082 }
5083
5084 static const struct ieee80211_ops mwl8k_ops = {
5085 .tx = mwl8k_tx,
5086 .start = mwl8k_start,
5087 .stop = mwl8k_stop,
5088 .add_interface = mwl8k_add_interface,
5089 .remove_interface = mwl8k_remove_interface,
5090 .config = mwl8k_config,
5091 .bss_info_changed = mwl8k_bss_info_changed,
5092 .prepare_multicast = mwl8k_prepare_multicast,
5093 .configure_filter = mwl8k_configure_filter,
5094 .set_key = mwl8k_set_key,
5095 .set_rts_threshold = mwl8k_set_rts_threshold,
5096 .sta_add = mwl8k_sta_add,
5097 .sta_remove = mwl8k_sta_remove,
5098 .conf_tx = mwl8k_conf_tx,
5099 .get_stats = mwl8k_get_stats,
5100 .get_survey = mwl8k_get_survey,
5101 .ampdu_action = mwl8k_ampdu_action,
5102 };
5103
5104 static void mwl8k_finalize_join_worker(struct work_struct *work)
5105 {
5106 struct mwl8k_priv *priv =
5107 container_of(work, struct mwl8k_priv, finalize_join_worker);
5108 struct sk_buff *skb = priv->beacon_skb;
5109 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5110 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5111 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5112 mgmt->u.beacon.variable, len);
5113 int dtim_period = 1;
5114
5115 if (tim && tim[1] >= 2)
5116 dtim_period = tim[3];
5117
5118 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5119
5120 dev_kfree_skb(skb);
5121 priv->beacon_skb = NULL;
5122 }
5123
5124 enum {
5125 MWL8363 = 0,
5126 MWL8687,
5127 MWL8366,
5128 };
5129
5130 #define MWL8K_8366_AP_FW_API 2
5131 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5132 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5133
5134 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5135 [MWL8363] = {
5136 .part_name = "88w8363",
5137 .helper_image = "mwl8k/helper_8363.fw",
5138 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5139 },
5140 [MWL8687] = {
5141 .part_name = "88w8687",
5142 .helper_image = "mwl8k/helper_8687.fw",
5143 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5144 },
5145 [MWL8366] = {
5146 .part_name = "88w8366",
5147 .helper_image = "mwl8k/helper_8366.fw",
5148 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5149 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5150 .fw_api_ap = MWL8K_8366_AP_FW_API,
5151 .ap_rxd_ops = &rxd_8366_ap_ops,
5152 },
5153 };
5154
5155 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5156 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5157 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5158 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5159 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5160 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5161 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5162
5163 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5164 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5165 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5166 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5167 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5168 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5169 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5170 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5171 { },
5172 };
5173 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5174
5175 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5176 {
5177 int rc;
5178 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5179 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5180 priv->fw_pref, priv->fw_alt);
5181 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5182 if (rc) {
5183 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5184 pci_name(priv->pdev), priv->fw_alt);
5185 return rc;
5186 }
5187 return 0;
5188 }
5189
5190 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5191 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5192 {
5193 struct mwl8k_priv *priv = context;
5194 struct mwl8k_device_info *di = priv->device_info;
5195 int rc;
5196
5197 switch (priv->fw_state) {
5198 case FW_STATE_INIT:
5199 if (!fw) {
5200 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5201 pci_name(priv->pdev), di->helper_image);
5202 goto fail;
5203 }
5204 priv->fw_helper = fw;
5205 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5206 true);
5207 if (rc && priv->fw_alt) {
5208 rc = mwl8k_request_alt_fw(priv);
5209 if (rc)
5210 goto fail;
5211 priv->fw_state = FW_STATE_LOADING_ALT;
5212 } else if (rc)
5213 goto fail;
5214 else
5215 priv->fw_state = FW_STATE_LOADING_PREF;
5216 break;
5217
5218 case FW_STATE_LOADING_PREF:
5219 if (!fw) {
5220 if (priv->fw_alt) {
5221 rc = mwl8k_request_alt_fw(priv);
5222 if (rc)
5223 goto fail;
5224 priv->fw_state = FW_STATE_LOADING_ALT;
5225 } else
5226 goto fail;
5227 } else {
5228 priv->fw_ucode = fw;
5229 rc = mwl8k_firmware_load_success(priv);
5230 if (rc)
5231 goto fail;
5232 else
5233 complete(&priv->firmware_loading_complete);
5234 }
5235 break;
5236
5237 case FW_STATE_LOADING_ALT:
5238 if (!fw) {
5239 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5240 pci_name(priv->pdev), di->helper_image);
5241 goto fail;
5242 }
5243 priv->fw_ucode = fw;
5244 rc = mwl8k_firmware_load_success(priv);
5245 if (rc)
5246 goto fail;
5247 else
5248 complete(&priv->firmware_loading_complete);
5249 break;
5250
5251 default:
5252 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5253 MWL8K_NAME, priv->fw_state);
5254 BUG_ON(1);
5255 }
5256
5257 return;
5258
5259 fail:
5260 priv->fw_state = FW_STATE_ERROR;
5261 complete(&priv->firmware_loading_complete);
5262 device_release_driver(&priv->pdev->dev);
5263 mwl8k_release_firmware(priv);
5264 }
5265
5266 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5267 bool nowait)
5268 {
5269 struct mwl8k_priv *priv = hw->priv;
5270 int rc;
5271
5272 /* Reset firmware and hardware */
5273 mwl8k_hw_reset(priv);
5274
5275 /* Ask userland hotplug daemon for the device firmware */
5276 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5277 if (rc) {
5278 wiphy_err(hw->wiphy, "Firmware files not found\n");
5279 return rc;
5280 }
5281
5282 if (nowait)
5283 return rc;
5284
5285 /* Load firmware into hardware */
5286 rc = mwl8k_load_firmware(hw);
5287 if (rc)
5288 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5289
5290 /* Reclaim memory once firmware is successfully loaded */
5291 mwl8k_release_firmware(priv);
5292
5293 return rc;
5294 }
5295
5296 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5297 {
5298 struct mwl8k_priv *priv = hw->priv;
5299 int rc = 0;
5300 int i;
5301
5302 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5303 rc = mwl8k_txq_init(hw, i);
5304 if (rc)
5305 break;
5306 if (priv->ap_fw)
5307 iowrite32(priv->txq[i].txd_dma,
5308 priv->sram + priv->txq_offset[i]);
5309 }
5310 return rc;
5311 }
5312
5313 /* initialize hw after successfully loading a firmware image */
5314 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5315 {
5316 struct mwl8k_priv *priv = hw->priv;
5317 int rc = 0;
5318 int i;
5319
5320 if (priv->ap_fw) {
5321 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5322 if (priv->rxd_ops == NULL) {
5323 wiphy_err(hw->wiphy,
5324 "Driver does not have AP firmware image support for this hardware\n");
5325 goto err_stop_firmware;
5326 }
5327 } else {
5328 priv->rxd_ops = &rxd_sta_ops;
5329 }
5330
5331 priv->sniffer_enabled = false;
5332 priv->wmm_enabled = false;
5333 priv->pending_tx_pkts = 0;
5334
5335 rc = mwl8k_rxq_init(hw, 0);
5336 if (rc)
5337 goto err_stop_firmware;
5338 rxq_refill(hw, 0, INT_MAX);
5339
5340 /* For the sta firmware, we need to know the dma addresses of tx queues
5341 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5342 * prior to issuing this command. But for the AP case, we learn the
5343 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5344 * case we must initialize the tx queues after.
5345 */
5346 priv->num_ampdu_queues = 0;
5347 if (!priv->ap_fw) {
5348 rc = mwl8k_init_txqs(hw);
5349 if (rc)
5350 goto err_free_queues;
5351 }
5352
5353 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5354 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5355 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5356 MWL8K_A2H_INT_BA_WATCHDOG,
5357 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5358 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5359 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5360
5361 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5362 IRQF_SHARED, MWL8K_NAME, hw);
5363 if (rc) {
5364 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5365 goto err_free_queues;
5366 }
5367
5368 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5369
5370 /*
5371 * Temporarily enable interrupts. Initial firmware host
5372 * commands use interrupts and avoid polling. Disable
5373 * interrupts when done.
5374 */
5375 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5376
5377 /* Get config data, mac addrs etc */
5378 if (priv->ap_fw) {
5379 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5380 if (!rc)
5381 rc = mwl8k_init_txqs(hw);
5382 if (!rc)
5383 rc = mwl8k_cmd_set_hw_spec(hw);
5384 } else {
5385 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5386 }
5387 if (rc) {
5388 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5389 goto err_free_irq;
5390 }
5391
5392 /* Turn radio off */
5393 rc = mwl8k_cmd_radio_disable(hw);
5394 if (rc) {
5395 wiphy_err(hw->wiphy, "Cannot disable\n");
5396 goto err_free_irq;
5397 }
5398
5399 /* Clear MAC address */
5400 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5401 if (rc) {
5402 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5403 goto err_free_irq;
5404 }
5405
5406 /* Disable interrupts */
5407 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5408 free_irq(priv->pdev->irq, hw);
5409
5410 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5411 priv->device_info->part_name,
5412 priv->hw_rev, hw->wiphy->perm_addr,
5413 priv->ap_fw ? "AP" : "STA",
5414 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5415 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5416
5417 return 0;
5418
5419 err_free_irq:
5420 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5421 free_irq(priv->pdev->irq, hw);
5422
5423 err_free_queues:
5424 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5425 mwl8k_txq_deinit(hw, i);
5426 mwl8k_rxq_deinit(hw, 0);
5427
5428 err_stop_firmware:
5429 mwl8k_hw_reset(priv);
5430
5431 return rc;
5432 }
5433
5434 /*
5435 * invoke mwl8k_reload_firmware to change the firmware image after the device
5436 * has already been registered
5437 */
5438 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5439 {
5440 int i, rc = 0;
5441 struct mwl8k_priv *priv = hw->priv;
5442
5443 mwl8k_stop(hw);
5444 mwl8k_rxq_deinit(hw, 0);
5445
5446 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5447 mwl8k_txq_deinit(hw, i);
5448
5449 rc = mwl8k_init_firmware(hw, fw_image, false);
5450 if (rc)
5451 goto fail;
5452
5453 rc = mwl8k_probe_hw(hw);
5454 if (rc)
5455 goto fail;
5456
5457 rc = mwl8k_start(hw);
5458 if (rc)
5459 goto fail;
5460
5461 rc = mwl8k_config(hw, ~0);
5462 if (rc)
5463 goto fail;
5464
5465 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5466 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5467 if (rc)
5468 goto fail;
5469 }
5470
5471 return rc;
5472
5473 fail:
5474 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5475 return rc;
5476 }
5477
5478 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5479 {
5480 struct ieee80211_hw *hw = priv->hw;
5481 int i, rc;
5482
5483 rc = mwl8k_load_firmware(hw);
5484 mwl8k_release_firmware(priv);
5485 if (rc) {
5486 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5487 return rc;
5488 }
5489
5490 /*
5491 * Extra headroom is the size of the required DMA header
5492 * minus the size of the smallest 802.11 frame (CTS frame).
5493 */
5494 hw->extra_tx_headroom =
5495 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5496
5497 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5498
5499 hw->channel_change_time = 10;
5500
5501 hw->queues = MWL8K_TX_WMM_QUEUES;
5502
5503 /* Set rssi values to dBm */
5504 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5505
5506 /*
5507 * Ask mac80211 to not to trigger PS mode
5508 * based on PM bit of incoming frames.
5509 */
5510 if (priv->ap_fw)
5511 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5512
5513 hw->vif_data_size = sizeof(struct mwl8k_vif);
5514 hw->sta_data_size = sizeof(struct mwl8k_sta);
5515
5516 priv->macids_used = 0;
5517 INIT_LIST_HEAD(&priv->vif_list);
5518
5519 /* Set default radio state and preamble */
5520 priv->radio_on = 0;
5521 priv->radio_short_preamble = 0;
5522
5523 /* Finalize join worker */
5524 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5525 /* Handle watchdog ba events */
5526 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5527
5528 /* TX reclaim and RX tasklets. */
5529 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5530 tasklet_disable(&priv->poll_tx_task);
5531 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5532 tasklet_disable(&priv->poll_rx_task);
5533
5534 /* Power management cookie */
5535 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5536 if (priv->cookie == NULL)
5537 return -ENOMEM;
5538
5539 mutex_init(&priv->fw_mutex);
5540 priv->fw_mutex_owner = NULL;
5541 priv->fw_mutex_depth = 0;
5542 priv->hostcmd_wait = NULL;
5543
5544 spin_lock_init(&priv->tx_lock);
5545
5546 spin_lock_init(&priv->stream_lock);
5547
5548 priv->tx_wait = NULL;
5549
5550 rc = mwl8k_probe_hw(hw);
5551 if (rc)
5552 goto err_free_cookie;
5553
5554 hw->wiphy->interface_modes = 0;
5555 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5556 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5557 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5558 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5559
5560 rc = ieee80211_register_hw(hw);
5561 if (rc) {
5562 wiphy_err(hw->wiphy, "Cannot register device\n");
5563 goto err_unprobe_hw;
5564 }
5565
5566 return 0;
5567
5568 err_unprobe_hw:
5569 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5570 mwl8k_txq_deinit(hw, i);
5571 mwl8k_rxq_deinit(hw, 0);
5572
5573 err_free_cookie:
5574 if (priv->cookie != NULL)
5575 pci_free_consistent(priv->pdev, 4,
5576 priv->cookie, priv->cookie_dma);
5577
5578 return rc;
5579 }
5580 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5581 const struct pci_device_id *id)
5582 {
5583 static int printed_version;
5584 struct ieee80211_hw *hw;
5585 struct mwl8k_priv *priv;
5586 struct mwl8k_device_info *di;
5587 int rc;
5588
5589 if (!printed_version) {
5590 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5591 printed_version = 1;
5592 }
5593
5594
5595 rc = pci_enable_device(pdev);
5596 if (rc) {
5597 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5598 MWL8K_NAME);
5599 return rc;
5600 }
5601
5602 rc = pci_request_regions(pdev, MWL8K_NAME);
5603 if (rc) {
5604 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5605 MWL8K_NAME);
5606 goto err_disable_device;
5607 }
5608
5609 pci_set_master(pdev);
5610
5611
5612 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5613 if (hw == NULL) {
5614 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5615 rc = -ENOMEM;
5616 goto err_free_reg;
5617 }
5618
5619 SET_IEEE80211_DEV(hw, &pdev->dev);
5620 pci_set_drvdata(pdev, hw);
5621
5622 priv = hw->priv;
5623 priv->hw = hw;
5624 priv->pdev = pdev;
5625 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5626
5627
5628 priv->sram = pci_iomap(pdev, 0, 0x10000);
5629 if (priv->sram == NULL) {
5630 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5631 goto err_iounmap;
5632 }
5633
5634 /*
5635 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5636 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5637 */
5638 priv->regs = pci_iomap(pdev, 1, 0x10000);
5639 if (priv->regs == NULL) {
5640 priv->regs = pci_iomap(pdev, 2, 0x10000);
5641 if (priv->regs == NULL) {
5642 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5643 goto err_iounmap;
5644 }
5645 }
5646
5647 /*
5648 * Choose the initial fw image depending on user input. If a second
5649 * image is available, make it the alternative image that will be
5650 * loaded if the first one fails.
5651 */
5652 init_completion(&priv->firmware_loading_complete);
5653 di = priv->device_info;
5654 if (ap_mode_default && di->fw_image_ap) {
5655 priv->fw_pref = di->fw_image_ap;
5656 priv->fw_alt = di->fw_image_sta;
5657 } else if (!ap_mode_default && di->fw_image_sta) {
5658 priv->fw_pref = di->fw_image_sta;
5659 priv->fw_alt = di->fw_image_ap;
5660 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5661 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5662 priv->fw_pref = di->fw_image_sta;
5663 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5664 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5665 priv->fw_pref = di->fw_image_ap;
5666 }
5667 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5668 if (rc)
5669 goto err_stop_firmware;
5670 return rc;
5671
5672 err_stop_firmware:
5673 mwl8k_hw_reset(priv);
5674
5675 err_iounmap:
5676 if (priv->regs != NULL)
5677 pci_iounmap(pdev, priv->regs);
5678
5679 if (priv->sram != NULL)
5680 pci_iounmap(pdev, priv->sram);
5681
5682 pci_set_drvdata(pdev, NULL);
5683 ieee80211_free_hw(hw);
5684
5685 err_free_reg:
5686 pci_release_regions(pdev);
5687
5688 err_disable_device:
5689 pci_disable_device(pdev);
5690
5691 return rc;
5692 }
5693
5694 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5695 {
5696 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5697 }
5698
5699 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5700 {
5701 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5702 struct mwl8k_priv *priv;
5703 int i;
5704
5705 if (hw == NULL)
5706 return;
5707 priv = hw->priv;
5708
5709 wait_for_completion(&priv->firmware_loading_complete);
5710
5711 if (priv->fw_state == FW_STATE_ERROR) {
5712 mwl8k_hw_reset(priv);
5713 goto unmap;
5714 }
5715
5716 ieee80211_stop_queues(hw);
5717
5718 ieee80211_unregister_hw(hw);
5719
5720 /* Remove TX reclaim and RX tasklets. */
5721 tasklet_kill(&priv->poll_tx_task);
5722 tasklet_kill(&priv->poll_rx_task);
5723
5724 /* Stop hardware */
5725 mwl8k_hw_reset(priv);
5726
5727 /* Return all skbs to mac80211 */
5728 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5729 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5730
5731 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5732 mwl8k_txq_deinit(hw, i);
5733
5734 mwl8k_rxq_deinit(hw, 0);
5735
5736 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5737
5738 unmap:
5739 pci_iounmap(pdev, priv->regs);
5740 pci_iounmap(pdev, priv->sram);
5741 pci_set_drvdata(pdev, NULL);
5742 ieee80211_free_hw(hw);
5743 pci_release_regions(pdev);
5744 pci_disable_device(pdev);
5745 }
5746
5747 static struct pci_driver mwl8k_driver = {
5748 .name = MWL8K_NAME,
5749 .id_table = mwl8k_pci_id_table,
5750 .probe = mwl8k_probe,
5751 .remove = __devexit_p(mwl8k_remove),
5752 .shutdown = __devexit_p(mwl8k_shutdown),
5753 };
5754
5755 static int __init mwl8k_init(void)
5756 {
5757 return pci_register_driver(&mwl8k_driver);
5758 }
5759
5760 static void __exit mwl8k_exit(void)
5761 {
5762 pci_unregister_driver(&mwl8k_driver);
5763 }
5764
5765 module_init(mwl8k_init);
5766 module_exit(mwl8k_exit);
5767
5768 MODULE_DESCRIPTION(MWL8K_DESC);
5769 MODULE_VERSION(MWL8K_VERSION);
5770 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5771 MODULE_LICENSE("GPL");
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