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zd1211rw: make 'handle_rx_packet: invalid, small RX packet' message debug-only
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / mwl8k.c
blob32261189bcef9065eac5cf14b961497a79a58f93
1 /*
2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
4 *
5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12 #include <linux/init.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
16 #include <linux/spinlock.h>
17 #include <linux/list.h>
18 #include <linux/pci.h>
19 #include <linux/delay.h>
20 #include <linux/completion.h>
21 #include <linux/etherdevice.h>
22 #include <linux/slab.h>
23 #include <net/mac80211.h>
24 #include <linux/moduleparam.h>
25 #include <linux/firmware.h>
26 #include <linux/workqueue.h>
27
28 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29 #define MWL8K_NAME KBUILD_MODNAME
30 #define MWL8K_VERSION "0.12"
31
32 /* Module parameters */
33 static unsigned ap_mode_default;
34 module_param(ap_mode_default, bool, 0);
35 MODULE_PARM_DESC(ap_mode_default,
36 "Set to 1 to make ap mode the default instead of sta mode");
37
38 /* Register definitions */
39 #define MWL8K_HIU_GEN_PTR 0x00000c10
40 #define MWL8K_MODE_STA 0x0000005a
41 #define MWL8K_MODE_AP 0x000000a5
42 #define MWL8K_HIU_INT_CODE 0x00000c14
43 #define MWL8K_FWSTA_READY 0xf0f1f2f4
44 #define MWL8K_FWAP_READY 0xf1f2f4a5
45 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
46 #define MWL8K_HIU_SCRATCH 0x00000c40
47
48 /* Host->device communications */
49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
51 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
54 #define MWL8K_H2A_INT_DUMMY (1 << 20)
55 #define MWL8K_H2A_INT_RESET (1 << 15)
56 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
57 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
58
59 /* Device->host communications */
60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
62 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
65 #define MWL8K_A2H_INT_DUMMY (1 << 20)
66 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
67 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
68 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
69 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
70 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
71 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
72 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
73 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
74 #define MWL8K_A2H_INT_RX_READY (1 << 1)
75 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
76
77 /* HW micro second timer register
78 * located at offset 0xA600. This
79 * will be used to timestamp tx
80 * packets.
81 */
82
83 #define MWL8K_HW_TIMER_REGISTER 0x0000a600
84
85 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
86 MWL8K_A2H_INT_CHNL_SWITCHED | \
87 MWL8K_A2H_INT_QUEUE_EMPTY | \
88 MWL8K_A2H_INT_RADAR_DETECT | \
89 MWL8K_A2H_INT_RADIO_ON | \
90 MWL8K_A2H_INT_RADIO_OFF | \
91 MWL8K_A2H_INT_MAC_EVENT | \
92 MWL8K_A2H_INT_OPC_DONE | \
93 MWL8K_A2H_INT_RX_READY | \
94 MWL8K_A2H_INT_TX_DONE | \
95 MWL8K_A2H_INT_BA_WATCHDOG)
96
97 #define MWL8K_RX_QUEUES 1
98 #define MWL8K_TX_WMM_QUEUES 4
99 #define MWL8K_MAX_AMPDU_QUEUES 8
100 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
101 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
102
103 struct rxd_ops {
104 int rxd_size;
105 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
106 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
107 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
108 __le16 *qos, s8 *noise);
109 };
110
111 struct mwl8k_device_info {
112 char *part_name;
113 char *helper_image;
114 char *fw_image_sta;
115 char *fw_image_ap;
116 struct rxd_ops *ap_rxd_ops;
117 u32 fw_api_ap;
118 };
119
120 struct mwl8k_rx_queue {
121 int rxd_count;
122
123 /* hw receives here */
124 int head;
125
126 /* refill descs here */
127 int tail;
128
129 void *rxd;
130 dma_addr_t rxd_dma;
131 struct {
132 struct sk_buff *skb;
133 DEFINE_DMA_UNMAP_ADDR(dma);
134 } *buf;
135 };
136
137 struct mwl8k_tx_queue {
138 /* hw transmits here */
139 int head;
140
141 /* sw appends here */
142 int tail;
143
144 unsigned int len;
145 struct mwl8k_tx_desc *txd;
146 dma_addr_t txd_dma;
147 struct sk_buff **skb;
148 };
149
150 enum {
151 AMPDU_NO_STREAM,
152 AMPDU_STREAM_NEW,
153 AMPDU_STREAM_IN_PROGRESS,
154 AMPDU_STREAM_ACTIVE,
155 };
156
157 struct mwl8k_ampdu_stream {
158 struct ieee80211_sta *sta;
159 u8 tid;
160 u8 state;
161 u8 idx;
162 u8 txq_idx; /* index of this stream in priv->txq */
163 };
164
165 struct mwl8k_priv {
166 struct ieee80211_hw *hw;
167 struct pci_dev *pdev;
168 int irq;
169
170 struct mwl8k_device_info *device_info;
171
172 void __iomem *sram;
173 void __iomem *regs;
174
175 /* firmware */
176 const struct firmware *fw_helper;
177 const struct firmware *fw_ucode;
178
179 /* hardware/firmware parameters */
180 bool ap_fw;
181 struct rxd_ops *rxd_ops;
182 struct ieee80211_supported_band band_24;
183 struct ieee80211_channel channels_24[14];
184 struct ieee80211_rate rates_24[14];
185 struct ieee80211_supported_band band_50;
186 struct ieee80211_channel channels_50[4];
187 struct ieee80211_rate rates_50[9];
188 u32 ap_macids_supported;
189 u32 sta_macids_supported;
190
191 /* Ampdu stream information */
192 u8 num_ampdu_queues;
193 spinlock_t stream_lock;
194 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
195 struct work_struct watchdog_ba_handle;
196
197 /* firmware access */
198 struct mutex fw_mutex;
199 struct task_struct *fw_mutex_owner;
200 int fw_mutex_depth;
201 struct completion *hostcmd_wait;
202
203 /* lock held over TX and TX reap */
204 spinlock_t tx_lock;
205
206 /* TX quiesce completion, protected by fw_mutex and tx_lock */
207 struct completion *tx_wait;
208
209 /* List of interfaces. */
210 u32 macids_used;
211 struct list_head vif_list;
212
213 /* power management status cookie from firmware */
214 u32 *cookie;
215 dma_addr_t cookie_dma;
216
217 u16 num_mcaddrs;
218 u8 hw_rev;
219 u32 fw_rev;
220
221 /*
222 * Running count of TX packets in flight, to avoid
223 * iterating over the transmit rings each time.
224 */
225 int pending_tx_pkts;
226
227 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
228 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
229 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
230
231 bool radio_on;
232 bool radio_short_preamble;
233 bool sniffer_enabled;
234 bool wmm_enabled;
235
236 /* XXX need to convert this to handle multiple interfaces */
237 bool capture_beacon;
238 u8 capture_bssid[ETH_ALEN];
239 struct sk_buff *beacon_skb;
240
241 /*
242 * This FJ worker has to be global as it is scheduled from the
243 * RX handler. At this point we don't know which interface it
244 * belongs to until the list of bssids waiting to complete join
245 * is checked.
246 */
247 struct work_struct finalize_join_worker;
248
249 /* Tasklet to perform TX reclaim. */
250 struct tasklet_struct poll_tx_task;
251
252 /* Tasklet to perform RX. */
253 struct tasklet_struct poll_rx_task;
254
255 /* Most recently reported noise in dBm */
256 s8 noise;
257
258 /*
259 * preserve the queue configurations so they can be restored if/when
260 * the firmware image is swapped.
261 */
262 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
263
264 /* async firmware loading state */
265 unsigned fw_state;
266 char *fw_pref;
267 char *fw_alt;
268 struct completion firmware_loading_complete;
269 };
270
271 #define MAX_WEP_KEY_LEN 13
272 #define NUM_WEP_KEYS 4
273
274 /* Per interface specific private data */
275 struct mwl8k_vif {
276 struct list_head list;
277 struct ieee80211_vif *vif;
278
279 /* Firmware macid for this vif. */
280 int macid;
281
282 /* Non AMPDU sequence number assigned by driver. */
283 u16 seqno;
284
285 /* Saved WEP keys */
286 struct {
287 u8 enabled;
288 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
289 } wep_key_conf[NUM_WEP_KEYS];
290
291 /* BSSID */
292 u8 bssid[ETH_ALEN];
293
294 /* A flag to indicate is HW crypto is enabled for this bssid */
295 bool is_hw_crypto_enabled;
296 };
297 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
298 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
299
300 struct tx_traffic_info {
301 u32 start_time;
302 u32 pkts;
303 };
304
305 #define MWL8K_MAX_TID 8
306 struct mwl8k_sta {
307 /* Index into station database. Returned by UPDATE_STADB. */
308 u8 peer_id;
309 u8 is_ampdu_allowed;
310 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
311 };
312 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
313
314 static const struct ieee80211_channel mwl8k_channels_24[] = {
315 { .center_freq = 2412, .hw_value = 1, },
316 { .center_freq = 2417, .hw_value = 2, },
317 { .center_freq = 2422, .hw_value = 3, },
318 { .center_freq = 2427, .hw_value = 4, },
319 { .center_freq = 2432, .hw_value = 5, },
320 { .center_freq = 2437, .hw_value = 6, },
321 { .center_freq = 2442, .hw_value = 7, },
322 { .center_freq = 2447, .hw_value = 8, },
323 { .center_freq = 2452, .hw_value = 9, },
324 { .center_freq = 2457, .hw_value = 10, },
325 { .center_freq = 2462, .hw_value = 11, },
326 { .center_freq = 2467, .hw_value = 12, },
327 { .center_freq = 2472, .hw_value = 13, },
328 { .center_freq = 2484, .hw_value = 14, },
329 };
330
331 static const struct ieee80211_rate mwl8k_rates_24[] = {
332 { .bitrate = 10, .hw_value = 2, },
333 { .bitrate = 20, .hw_value = 4, },
334 { .bitrate = 55, .hw_value = 11, },
335 { .bitrate = 110, .hw_value = 22, },
336 { .bitrate = 220, .hw_value = 44, },
337 { .bitrate = 60, .hw_value = 12, },
338 { .bitrate = 90, .hw_value = 18, },
339 { .bitrate = 120, .hw_value = 24, },
340 { .bitrate = 180, .hw_value = 36, },
341 { .bitrate = 240, .hw_value = 48, },
342 { .bitrate = 360, .hw_value = 72, },
343 { .bitrate = 480, .hw_value = 96, },
344 { .bitrate = 540, .hw_value = 108, },
345 { .bitrate = 720, .hw_value = 144, },
346 };
347
348 static const struct ieee80211_channel mwl8k_channels_50[] = {
349 { .center_freq = 5180, .hw_value = 36, },
350 { .center_freq = 5200, .hw_value = 40, },
351 { .center_freq = 5220, .hw_value = 44, },
352 { .center_freq = 5240, .hw_value = 48, },
353 };
354
355 static const struct ieee80211_rate mwl8k_rates_50[] = {
356 { .bitrate = 60, .hw_value = 12, },
357 { .bitrate = 90, .hw_value = 18, },
358 { .bitrate = 120, .hw_value = 24, },
359 { .bitrate = 180, .hw_value = 36, },
360 { .bitrate = 240, .hw_value = 48, },
361 { .bitrate = 360, .hw_value = 72, },
362 { .bitrate = 480, .hw_value = 96, },
363 { .bitrate = 540, .hw_value = 108, },
364 { .bitrate = 720, .hw_value = 144, },
365 };
366
367 /* Set or get info from Firmware */
368 #define MWL8K_CMD_GET 0x0000
369 #define MWL8K_CMD_SET 0x0001
370 #define MWL8K_CMD_SET_LIST 0x0002
371
372 /* Firmware command codes */
373 #define MWL8K_CMD_CODE_DNLD 0x0001
374 #define MWL8K_CMD_GET_HW_SPEC 0x0003
375 #define MWL8K_CMD_SET_HW_SPEC 0x0004
376 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
377 #define MWL8K_CMD_GET_STAT 0x0014
378 #define MWL8K_CMD_RADIO_CONTROL 0x001c
379 #define MWL8K_CMD_RF_TX_POWER 0x001e
380 #define MWL8K_CMD_TX_POWER 0x001f
381 #define MWL8K_CMD_RF_ANTENNA 0x0020
382 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
383 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
384 #define MWL8K_CMD_SET_POST_SCAN 0x0108
385 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
386 #define MWL8K_CMD_SET_AID 0x010d
387 #define MWL8K_CMD_SET_RATE 0x0110
388 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
389 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
390 #define MWL8K_CMD_SET_SLOT 0x0114
391 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
392 #define MWL8K_CMD_SET_WMM_MODE 0x0123
393 #define MWL8K_CMD_MIMO_CONFIG 0x0125
394 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
395 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
396 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
397 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
398 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
399 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
400 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
401 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
402 #define MWL8K_CMD_UPDATE_STADB 0x1123
403 #define MWL8K_CMD_BASTREAM 0x1125
404
405 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
406 {
407 u16 command = le16_to_cpu(cmd);
408
409 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
410 snprintf(buf, bufsize, "%s", #x);\
411 return buf;\
412 } while (0)
413 switch (command & ~0x8000) {
414 MWL8K_CMDNAME(CODE_DNLD);
415 MWL8K_CMDNAME(GET_HW_SPEC);
416 MWL8K_CMDNAME(SET_HW_SPEC);
417 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
418 MWL8K_CMDNAME(GET_STAT);
419 MWL8K_CMDNAME(RADIO_CONTROL);
420 MWL8K_CMDNAME(RF_TX_POWER);
421 MWL8K_CMDNAME(TX_POWER);
422 MWL8K_CMDNAME(RF_ANTENNA);
423 MWL8K_CMDNAME(SET_BEACON);
424 MWL8K_CMDNAME(SET_PRE_SCAN);
425 MWL8K_CMDNAME(SET_POST_SCAN);
426 MWL8K_CMDNAME(SET_RF_CHANNEL);
427 MWL8K_CMDNAME(SET_AID);
428 MWL8K_CMDNAME(SET_RATE);
429 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
430 MWL8K_CMDNAME(RTS_THRESHOLD);
431 MWL8K_CMDNAME(SET_SLOT);
432 MWL8K_CMDNAME(SET_EDCA_PARAMS);
433 MWL8K_CMDNAME(SET_WMM_MODE);
434 MWL8K_CMDNAME(MIMO_CONFIG);
435 MWL8K_CMDNAME(USE_FIXED_RATE);
436 MWL8K_CMDNAME(ENABLE_SNIFFER);
437 MWL8K_CMDNAME(SET_MAC_ADDR);
438 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
439 MWL8K_CMDNAME(BSS_START);
440 MWL8K_CMDNAME(SET_NEW_STN);
441 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
442 MWL8K_CMDNAME(UPDATE_STADB);
443 MWL8K_CMDNAME(BASTREAM);
444 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
445 default:
446 snprintf(buf, bufsize, "0x%x", cmd);
447 }
448 #undef MWL8K_CMDNAME
449
450 return buf;
451 }
452
453 /* Hardware and firmware reset */
454 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
455 {
456 iowrite32(MWL8K_H2A_INT_RESET,
457 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
458 iowrite32(MWL8K_H2A_INT_RESET,
459 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
460 msleep(20);
461 }
462
463 /* Release fw image */
464 static void mwl8k_release_fw(const struct firmware **fw)
465 {
466 if (*fw == NULL)
467 return;
468 release_firmware(*fw);
469 *fw = NULL;
470 }
471
472 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
473 {
474 mwl8k_release_fw(&priv->fw_ucode);
475 mwl8k_release_fw(&priv->fw_helper);
476 }
477
478 /* states for asynchronous f/w loading */
479 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
480 enum {
481 FW_STATE_INIT = 0,
482 FW_STATE_LOADING_PREF,
483 FW_STATE_LOADING_ALT,
484 FW_STATE_ERROR,
485 };
486
487 /* Request fw image */
488 static int mwl8k_request_fw(struct mwl8k_priv *priv,
489 const char *fname, const struct firmware **fw,
490 bool nowait)
491 {
492 /* release current image */
493 if (*fw != NULL)
494 mwl8k_release_fw(fw);
495
496 if (nowait)
497 return request_firmware_nowait(THIS_MODULE, 1, fname,
498 &priv->pdev->dev, GFP_KERNEL,
499 priv, mwl8k_fw_state_machine);
500 else
501 return request_firmware(fw, fname, &priv->pdev->dev);
502 }
503
504 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
505 bool nowait)
506 {
507 struct mwl8k_device_info *di = priv->device_info;
508 int rc;
509
510 if (di->helper_image != NULL) {
511 if (nowait)
512 rc = mwl8k_request_fw(priv, di->helper_image,
513 &priv->fw_helper, true);
514 else
515 rc = mwl8k_request_fw(priv, di->helper_image,
516 &priv->fw_helper, false);
517 if (rc)
518 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
519 pci_name(priv->pdev), di->helper_image);
520
521 if (rc || nowait)
522 return rc;
523 }
524
525 if (nowait) {
526 /*
527 * if we get here, no helper image is needed. Skip the
528 * FW_STATE_INIT state.
529 */
530 priv->fw_state = FW_STATE_LOADING_PREF;
531 rc = mwl8k_request_fw(priv, fw_image,
532 &priv->fw_ucode,
533 true);
534 } else
535 rc = mwl8k_request_fw(priv, fw_image,
536 &priv->fw_ucode, false);
537 if (rc) {
538 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
539 pci_name(priv->pdev), fw_image);
540 mwl8k_release_fw(&priv->fw_helper);
541 return rc;
542 }
543
544 return 0;
545 }
546
547 struct mwl8k_cmd_pkt {
548 __le16 code;
549 __le16 length;
550 __u8 seq_num;
551 __u8 macid;
552 __le16 result;
553 char payload[0];
554 } __packed;
555
556 /*
557 * Firmware loading.
558 */
559 static int
560 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
561 {
562 void __iomem *regs = priv->regs;
563 dma_addr_t dma_addr;
564 int loops;
565
566 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
567 if (pci_dma_mapping_error(priv->pdev, dma_addr))
568 return -ENOMEM;
569
570 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
571 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
572 iowrite32(MWL8K_H2A_INT_DOORBELL,
573 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
574 iowrite32(MWL8K_H2A_INT_DUMMY,
575 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
576
577 loops = 1000;
578 do {
579 u32 int_code;
580
581 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
582 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
583 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
584 break;
585 }
586
587 cond_resched();
588 udelay(1);
589 } while (--loops);
590
591 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
592
593 return loops ? 0 : -ETIMEDOUT;
594 }
595
596 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
597 const u8 *data, size_t length)
598 {
599 struct mwl8k_cmd_pkt *cmd;
600 int done;
601 int rc = 0;
602
603 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
604 if (cmd == NULL)
605 return -ENOMEM;
606
607 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
608 cmd->seq_num = 0;
609 cmd->macid = 0;
610 cmd->result = 0;
611
612 done = 0;
613 while (length) {
614 int block_size = length > 256 ? 256 : length;
615
616 memcpy(cmd->payload, data + done, block_size);
617 cmd->length = cpu_to_le16(block_size);
618
619 rc = mwl8k_send_fw_load_cmd(priv, cmd,
620 sizeof(*cmd) + block_size);
621 if (rc)
622 break;
623
624 done += block_size;
625 length -= block_size;
626 }
627
628 if (!rc) {
629 cmd->length = 0;
630 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
631 }
632
633 kfree(cmd);
634
635 return rc;
636 }
637
638 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
639 const u8 *data, size_t length)
640 {
641 unsigned char *buffer;
642 int may_continue, rc = 0;
643 u32 done, prev_block_size;
644
645 buffer = kmalloc(1024, GFP_KERNEL);
646 if (buffer == NULL)
647 return -ENOMEM;
648
649 done = 0;
650 prev_block_size = 0;
651 may_continue = 1000;
652 while (may_continue > 0) {
653 u32 block_size;
654
655 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
656 if (block_size & 1) {
657 block_size &= ~1;
658 may_continue--;
659 } else {
660 done += prev_block_size;
661 length -= prev_block_size;
662 }
663
664 if (block_size > 1024 || block_size > length) {
665 rc = -EOVERFLOW;
666 break;
667 }
668
669 if (length == 0) {
670 rc = 0;
671 break;
672 }
673
674 if (block_size == 0) {
675 rc = -EPROTO;
676 may_continue--;
677 udelay(1);
678 continue;
679 }
680
681 prev_block_size = block_size;
682 memcpy(buffer, data + done, block_size);
683
684 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
685 if (rc)
686 break;
687 }
688
689 if (!rc && length != 0)
690 rc = -EREMOTEIO;
691
692 kfree(buffer);
693
694 return rc;
695 }
696
697 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
698 {
699 struct mwl8k_priv *priv = hw->priv;
700 const struct firmware *fw = priv->fw_ucode;
701 int rc;
702 int loops;
703
704 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
705 const struct firmware *helper = priv->fw_helper;
706
707 if (helper == NULL) {
708 printk(KERN_ERR "%s: helper image needed but none "
709 "given\n", pci_name(priv->pdev));
710 return -EINVAL;
711 }
712
713 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
714 if (rc) {
715 printk(KERN_ERR "%s: unable to load firmware "
716 "helper image\n", pci_name(priv->pdev));
717 return rc;
718 }
719 msleep(20);
720
721 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
722 } else {
723 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
724 }
725
726 if (rc) {
727 printk(KERN_ERR "%s: unable to load firmware image\n",
728 pci_name(priv->pdev));
729 return rc;
730 }
731
732 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
733
734 loops = 500000;
735 do {
736 u32 ready_code;
737
738 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
739 if (ready_code == MWL8K_FWAP_READY) {
740 priv->ap_fw = 1;
741 break;
742 } else if (ready_code == MWL8K_FWSTA_READY) {
743 priv->ap_fw = 0;
744 break;
745 }
746
747 cond_resched();
748 udelay(1);
749 } while (--loops);
750
751 return loops ? 0 : -ETIMEDOUT;
752 }
753
754
755 /* DMA header used by firmware and hardware. */
756 struct mwl8k_dma_data {
757 __le16 fwlen;
758 struct ieee80211_hdr wh;
759 char data[0];
760 } __packed;
761
762 /* Routines to add/remove DMA header from skb. */
763 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
764 {
765 struct mwl8k_dma_data *tr;
766 int hdrlen;
767
768 tr = (struct mwl8k_dma_data *)skb->data;
769 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
770
771 if (hdrlen != sizeof(tr->wh)) {
772 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
773 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
774 *((__le16 *)(tr->data - 2)) = qos;
775 } else {
776 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
777 }
778 }
779
780 if (hdrlen != sizeof(*tr))
781 skb_pull(skb, sizeof(*tr) - hdrlen);
782 }
783
784 #define REDUCED_TX_HEADROOM 8
785
786 static void
787 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
788 int head_pad, int tail_pad)
789 {
790 struct ieee80211_hdr *wh;
791 int hdrlen;
792 int reqd_hdrlen;
793 struct mwl8k_dma_data *tr;
794
795 /*
796 * Add a firmware DMA header; the firmware requires that we
797 * present a 2-byte payload length followed by a 4-address
798 * header (without QoS field), followed (optionally) by any
799 * WEP/ExtIV header (but only filled in for CCMP).
800 */
801 wh = (struct ieee80211_hdr *)skb->data;
802
803 hdrlen = ieee80211_hdrlen(wh->frame_control);
804
805 /*
806 * Check if skb_resize is required because of
807 * tx_headroom adjustment.
808 */
809 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
810 + REDUCED_TX_HEADROOM))) {
811 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
812
813 wiphy_err(priv->hw->wiphy,
814 "Failed to reallocate TX buffer\n");
815 return;
816 }
817 skb->truesize += REDUCED_TX_HEADROOM;
818 }
819
820 reqd_hdrlen = sizeof(*tr) + head_pad;
821
822 if (hdrlen != reqd_hdrlen)
823 skb_push(skb, reqd_hdrlen - hdrlen);
824
825 if (ieee80211_is_data_qos(wh->frame_control))
826 hdrlen -= IEEE80211_QOS_CTL_LEN;
827
828 tr = (struct mwl8k_dma_data *)skb->data;
829 if (wh != &tr->wh)
830 memmove(&tr->wh, wh, hdrlen);
831 if (hdrlen != sizeof(tr->wh))
832 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
833
834 /*
835 * Firmware length is the length of the fully formed "802.11
836 * payload". That is, everything except for the 802.11 header.
837 * This includes all crypto material including the MIC.
838 */
839 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
840 }
841
842 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
843 struct sk_buff *skb)
844 {
845 struct ieee80211_hdr *wh;
846 struct ieee80211_tx_info *tx_info;
847 struct ieee80211_key_conf *key_conf;
848 int data_pad;
849 int head_pad = 0;
850
851 wh = (struct ieee80211_hdr *)skb->data;
852
853 tx_info = IEEE80211_SKB_CB(skb);
854
855 key_conf = NULL;
856 if (ieee80211_is_data(wh->frame_control))
857 key_conf = tx_info->control.hw_key;
858
859 /*
860 * Make sure the packet header is in the DMA header format (4-address
861 * without QoS), and add head & tail padding when HW crypto is enabled.
862 *
863 * We have the following trailer padding requirements:
864 * - WEP: 4 trailer bytes (ICV)
865 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
866 * - CCMP: 8 trailer bytes (MIC)
867 */
868 data_pad = 0;
869 if (key_conf != NULL) {
870 head_pad = key_conf->iv_len;
871 switch (key_conf->cipher) {
872 case WLAN_CIPHER_SUITE_WEP40:
873 case WLAN_CIPHER_SUITE_WEP104:
874 data_pad = 4;
875 break;
876 case WLAN_CIPHER_SUITE_TKIP:
877 data_pad = 12;
878 break;
879 case WLAN_CIPHER_SUITE_CCMP:
880 data_pad = 8;
881 break;
882 }
883 }
884 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
885 }
886
887 /*
888 * Packet reception for 88w8366 AP firmware.
889 */
890 struct mwl8k_rxd_8366_ap {
891 __le16 pkt_len;
892 __u8 sq2;
893 __u8 rate;
894 __le32 pkt_phys_addr;
895 __le32 next_rxd_phys_addr;
896 __le16 qos_control;
897 __le16 htsig2;
898 __le32 hw_rssi_info;
899 __le32 hw_noise_floor_info;
900 __u8 noise_floor;
901 __u8 pad0[3];
902 __u8 rssi;
903 __u8 rx_status;
904 __u8 channel;
905 __u8 rx_ctrl;
906 } __packed;
907
908 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
909 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
910 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
911
912 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
913
914 /* 8366 AP rx_status bits */
915 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
916 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
917 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
918 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
919 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
920
921 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
922 {
923 struct mwl8k_rxd_8366_ap *rxd = _rxd;
924
925 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
926 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
927 }
928
929 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
930 {
931 struct mwl8k_rxd_8366_ap *rxd = _rxd;
932
933 rxd->pkt_len = cpu_to_le16(len);
934 rxd->pkt_phys_addr = cpu_to_le32(addr);
935 wmb();
936 rxd->rx_ctrl = 0;
937 }
938
939 static int
940 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
941 __le16 *qos, s8 *noise)
942 {
943 struct mwl8k_rxd_8366_ap *rxd = _rxd;
944
945 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
946 return -1;
947 rmb();
948
949 memset(status, 0, sizeof(*status));
950
951 status->signal = -rxd->rssi;
952 *noise = -rxd->noise_floor;
953
954 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
955 status->flag |= RX_FLAG_HT;
956 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
957 status->flag |= RX_FLAG_40MHZ;
958 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
959 } else {
960 int i;
961
962 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
963 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
964 status->rate_idx = i;
965 break;
966 }
967 }
968 }
969
970 if (rxd->channel > 14) {
971 status->band = IEEE80211_BAND_5GHZ;
972 if (!(status->flag & RX_FLAG_HT))
973 status->rate_idx -= 5;
974 } else {
975 status->band = IEEE80211_BAND_2GHZ;
976 }
977 status->freq = ieee80211_channel_to_frequency(rxd->channel,
978 status->band);
979
980 *qos = rxd->qos_control;
981
982 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
983 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
984 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
985 status->flag |= RX_FLAG_MMIC_ERROR;
986
987 return le16_to_cpu(rxd->pkt_len);
988 }
989
990 static struct rxd_ops rxd_8366_ap_ops = {
991 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
992 .rxd_init = mwl8k_rxd_8366_ap_init,
993 .rxd_refill = mwl8k_rxd_8366_ap_refill,
994 .rxd_process = mwl8k_rxd_8366_ap_process,
995 };
996
997 /*
998 * Packet reception for STA firmware.
999 */
1000 struct mwl8k_rxd_sta {
1001 __le16 pkt_len;
1002 __u8 link_quality;
1003 __u8 noise_level;
1004 __le32 pkt_phys_addr;
1005 __le32 next_rxd_phys_addr;
1006 __le16 qos_control;
1007 __le16 rate_info;
1008 __le32 pad0[4];
1009 __u8 rssi;
1010 __u8 channel;
1011 __le16 pad1;
1012 __u8 rx_ctrl;
1013 __u8 rx_status;
1014 __u8 pad2[2];
1015 } __packed;
1016
1017 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1018 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1019 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1020 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1021 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1022 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1023
1024 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1025 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1026 /* ICV=0 or MIC=1 */
1027 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1028 /* Key is uploaded only in failure case */
1029 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1030
1031 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1032 {
1033 struct mwl8k_rxd_sta *rxd = _rxd;
1034
1035 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1036 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1037 }
1038
1039 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1040 {
1041 struct mwl8k_rxd_sta *rxd = _rxd;
1042
1043 rxd->pkt_len = cpu_to_le16(len);
1044 rxd->pkt_phys_addr = cpu_to_le32(addr);
1045 wmb();
1046 rxd->rx_ctrl = 0;
1047 }
1048
1049 static int
1050 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1051 __le16 *qos, s8 *noise)
1052 {
1053 struct mwl8k_rxd_sta *rxd = _rxd;
1054 u16 rate_info;
1055
1056 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1057 return -1;
1058 rmb();
1059
1060 rate_info = le16_to_cpu(rxd->rate_info);
1061
1062 memset(status, 0, sizeof(*status));
1063
1064 status->signal = -rxd->rssi;
1065 *noise = -rxd->noise_level;
1066 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1067 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1068
1069 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1070 status->flag |= RX_FLAG_SHORTPRE;
1071 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1072 status->flag |= RX_FLAG_40MHZ;
1073 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1074 status->flag |= RX_FLAG_SHORT_GI;
1075 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1076 status->flag |= RX_FLAG_HT;
1077
1078 if (rxd->channel > 14) {
1079 status->band = IEEE80211_BAND_5GHZ;
1080 if (!(status->flag & RX_FLAG_HT))
1081 status->rate_idx -= 5;
1082 } else {
1083 status->band = IEEE80211_BAND_2GHZ;
1084 }
1085 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1086 status->band);
1087
1088 *qos = rxd->qos_control;
1089 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1090 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1091 status->flag |= RX_FLAG_MMIC_ERROR;
1092
1093 return le16_to_cpu(rxd->pkt_len);
1094 }
1095
1096 static struct rxd_ops rxd_sta_ops = {
1097 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1098 .rxd_init = mwl8k_rxd_sta_init,
1099 .rxd_refill = mwl8k_rxd_sta_refill,
1100 .rxd_process = mwl8k_rxd_sta_process,
1101 };
1102
1103
1104 #define MWL8K_RX_DESCS 256
1105 #define MWL8K_RX_MAXSZ 3800
1106
1107 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1108 {
1109 struct mwl8k_priv *priv = hw->priv;
1110 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1111 int size;
1112 int i;
1113
1114 rxq->rxd_count = 0;
1115 rxq->head = 0;
1116 rxq->tail = 0;
1117
1118 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1119
1120 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1121 if (rxq->rxd == NULL) {
1122 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1123 return -ENOMEM;
1124 }
1125 memset(rxq->rxd, 0, size);
1126
1127 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1128 if (rxq->buf == NULL) {
1129 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1130 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1131 return -ENOMEM;
1132 }
1133
1134 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1135 int desc_size;
1136 void *rxd;
1137 int nexti;
1138 dma_addr_t next_dma_addr;
1139
1140 desc_size = priv->rxd_ops->rxd_size;
1141 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1142
1143 nexti = i + 1;
1144 if (nexti == MWL8K_RX_DESCS)
1145 nexti = 0;
1146 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1147
1148 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1149 }
1150
1151 return 0;
1152 }
1153
1154 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1155 {
1156 struct mwl8k_priv *priv = hw->priv;
1157 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1158 int refilled;
1159
1160 refilled = 0;
1161 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1162 struct sk_buff *skb;
1163 dma_addr_t addr;
1164 int rx;
1165 void *rxd;
1166
1167 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1168 if (skb == NULL)
1169 break;
1170
1171 addr = pci_map_single(priv->pdev, skb->data,
1172 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1173
1174 rxq->rxd_count++;
1175 rx = rxq->tail++;
1176 if (rxq->tail == MWL8K_RX_DESCS)
1177 rxq->tail = 0;
1178 rxq->buf[rx].skb = skb;
1179 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1180
1181 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1182 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1183
1184 refilled++;
1185 }
1186
1187 return refilled;
1188 }
1189
1190 /* Must be called only when the card's reception is completely halted */
1191 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1192 {
1193 struct mwl8k_priv *priv = hw->priv;
1194 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1195 int i;
1196
1197 if (rxq->rxd == NULL)
1198 return;
1199
1200 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1201 if (rxq->buf[i].skb != NULL) {
1202 pci_unmap_single(priv->pdev,
1203 dma_unmap_addr(&rxq->buf[i], dma),
1204 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1205 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1206
1207 kfree_skb(rxq->buf[i].skb);
1208 rxq->buf[i].skb = NULL;
1209 }
1210 }
1211
1212 kfree(rxq->buf);
1213 rxq->buf = NULL;
1214
1215 pci_free_consistent(priv->pdev,
1216 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1217 rxq->rxd, rxq->rxd_dma);
1218 rxq->rxd = NULL;
1219 }
1220
1221
1222 /*
1223 * Scan a list of BSSIDs to process for finalize join.
1224 * Allows for extension to process multiple BSSIDs.
1225 */
1226 static inline int
1227 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1228 {
1229 return priv->capture_beacon &&
1230 ieee80211_is_beacon(wh->frame_control) &&
1231 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1232 }
1233
1234 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1235 struct sk_buff *skb)
1236 {
1237 struct mwl8k_priv *priv = hw->priv;
1238
1239 priv->capture_beacon = false;
1240 memset(priv->capture_bssid, 0, ETH_ALEN);
1241
1242 /*
1243 * Use GFP_ATOMIC as rxq_process is called from
1244 * the primary interrupt handler, memory allocation call
1245 * must not sleep.
1246 */
1247 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1248 if (priv->beacon_skb != NULL)
1249 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1250 }
1251
1252 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1253 u8 *bssid)
1254 {
1255 struct mwl8k_vif *mwl8k_vif;
1256
1257 list_for_each_entry(mwl8k_vif,
1258 vif_list, list) {
1259 if (memcmp(bssid, mwl8k_vif->bssid,
1260 ETH_ALEN) == 0)
1261 return mwl8k_vif;
1262 }
1263
1264 return NULL;
1265 }
1266
1267 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1268 {
1269 struct mwl8k_priv *priv = hw->priv;
1270 struct mwl8k_vif *mwl8k_vif = NULL;
1271 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1272 int processed;
1273
1274 processed = 0;
1275 while (rxq->rxd_count && limit--) {
1276 struct sk_buff *skb;
1277 void *rxd;
1278 int pkt_len;
1279 struct ieee80211_rx_status status;
1280 struct ieee80211_hdr *wh;
1281 __le16 qos;
1282
1283 skb = rxq->buf[rxq->head].skb;
1284 if (skb == NULL)
1285 break;
1286
1287 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1288
1289 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1290 &priv->noise);
1291 if (pkt_len < 0)
1292 break;
1293
1294 rxq->buf[rxq->head].skb = NULL;
1295
1296 pci_unmap_single(priv->pdev,
1297 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1298 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1299 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1300
1301 rxq->head++;
1302 if (rxq->head == MWL8K_RX_DESCS)
1303 rxq->head = 0;
1304
1305 rxq->rxd_count--;
1306
1307 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1308
1309 /*
1310 * Check for a pending join operation. Save a
1311 * copy of the beacon and schedule a tasklet to
1312 * send a FINALIZE_JOIN command to the firmware.
1313 */
1314 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1315 mwl8k_save_beacon(hw, skb);
1316
1317 if (ieee80211_has_protected(wh->frame_control)) {
1318
1319 /* Check if hw crypto has been enabled for
1320 * this bss. If yes, set the status flags
1321 * accordingly
1322 */
1323 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1324 wh->addr1);
1325
1326 if (mwl8k_vif != NULL &&
1327 mwl8k_vif->is_hw_crypto_enabled == true) {
1328 /*
1329 * When MMIC ERROR is encountered
1330 * by the firmware, payload is
1331 * dropped and only 32 bytes of
1332 * mwl8k Firmware header is sent
1333 * to the host.
1334 *
1335 * We need to add four bytes of
1336 * key information. In it
1337 * MAC80211 expects keyidx set to
1338 * 0 for triggering Counter
1339 * Measure of MMIC failure.
1340 */
1341 if (status.flag & RX_FLAG_MMIC_ERROR) {
1342 struct mwl8k_dma_data *tr;
1343 tr = (struct mwl8k_dma_data *)skb->data;
1344 memset((void *)&(tr->data), 0, 4);
1345 pkt_len += 4;
1346 }
1347
1348 if (!ieee80211_is_auth(wh->frame_control))
1349 status.flag |= RX_FLAG_IV_STRIPPED |
1350 RX_FLAG_DECRYPTED |
1351 RX_FLAG_MMIC_STRIPPED;
1352 }
1353 }
1354
1355 skb_put(skb, pkt_len);
1356 mwl8k_remove_dma_header(skb, qos);
1357 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1358 ieee80211_rx_irqsafe(hw, skb);
1359
1360 processed++;
1361 }
1362
1363 return processed;
1364 }
1365
1366
1367 /*
1368 * Packet transmission.
1369 */
1370
1371 #define MWL8K_TXD_STATUS_OK 0x00000001
1372 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1373 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1374 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1375 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1376
1377 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1378 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1379 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1380 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1381 #define MWL8K_QOS_EOSP 0x0010
1382
1383 struct mwl8k_tx_desc {
1384 __le32 status;
1385 __u8 data_rate;
1386 __u8 tx_priority;
1387 __le16 qos_control;
1388 __le32 pkt_phys_addr;
1389 __le16 pkt_len;
1390 __u8 dest_MAC_addr[ETH_ALEN];
1391 __le32 next_txd_phys_addr;
1392 __le32 timestamp;
1393 __le16 rate_info;
1394 __u8 peer_id;
1395 __u8 tx_frag_cnt;
1396 } __packed;
1397
1398 #define MWL8K_TX_DESCS 128
1399
1400 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1401 {
1402 struct mwl8k_priv *priv = hw->priv;
1403 struct mwl8k_tx_queue *txq = priv->txq + index;
1404 int size;
1405 int i;
1406
1407 txq->len = 0;
1408 txq->head = 0;
1409 txq->tail = 0;
1410
1411 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1412
1413 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1414 if (txq->txd == NULL) {
1415 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1416 return -ENOMEM;
1417 }
1418 memset(txq->txd, 0, size);
1419
1420 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1421 if (txq->skb == NULL) {
1422 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1423 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1424 return -ENOMEM;
1425 }
1426
1427 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1428 struct mwl8k_tx_desc *tx_desc;
1429 int nexti;
1430
1431 tx_desc = txq->txd + i;
1432 nexti = (i + 1) % MWL8K_TX_DESCS;
1433
1434 tx_desc->status = 0;
1435 tx_desc->next_txd_phys_addr =
1436 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1437 }
1438
1439 return 0;
1440 }
1441
1442 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1443 {
1444 iowrite32(MWL8K_H2A_INT_PPA_READY,
1445 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1446 iowrite32(MWL8K_H2A_INT_DUMMY,
1447 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1448 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1449 }
1450
1451 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1452 {
1453 struct mwl8k_priv *priv = hw->priv;
1454 int i;
1455
1456 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1457 struct mwl8k_tx_queue *txq = priv->txq + i;
1458 int fw_owned = 0;
1459 int drv_owned = 0;
1460 int unused = 0;
1461 int desc;
1462
1463 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1464 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1465 u32 status;
1466
1467 status = le32_to_cpu(tx_desc->status);
1468 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1469 fw_owned++;
1470 else
1471 drv_owned++;
1472
1473 if (tx_desc->pkt_len == 0)
1474 unused++;
1475 }
1476
1477 wiphy_err(hw->wiphy,
1478 "txq[%d] len=%d head=%d tail=%d "
1479 "fw_owned=%d drv_owned=%d unused=%d\n",
1480 i,
1481 txq->len, txq->head, txq->tail,
1482 fw_owned, drv_owned, unused);
1483 }
1484 }
1485
1486 /*
1487 * Must be called with priv->fw_mutex held and tx queues stopped.
1488 */
1489 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1490
1491 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1492 {
1493 struct mwl8k_priv *priv = hw->priv;
1494 DECLARE_COMPLETION_ONSTACK(tx_wait);
1495 int retry;
1496 int rc;
1497
1498 might_sleep();
1499
1500 /*
1501 * The TX queues are stopped at this point, so this test
1502 * doesn't need to take ->tx_lock.
1503 */
1504 if (!priv->pending_tx_pkts)
1505 return 0;
1506
1507 retry = 0;
1508 rc = 0;
1509
1510 spin_lock_bh(&priv->tx_lock);
1511 priv->tx_wait = &tx_wait;
1512 while (!rc) {
1513 int oldcount;
1514 unsigned long timeout;
1515
1516 oldcount = priv->pending_tx_pkts;
1517
1518 spin_unlock_bh(&priv->tx_lock);
1519 timeout = wait_for_completion_timeout(&tx_wait,
1520 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1521 spin_lock_bh(&priv->tx_lock);
1522
1523 if (timeout) {
1524 WARN_ON(priv->pending_tx_pkts);
1525 if (retry)
1526 wiphy_notice(hw->wiphy, "tx rings drained\n");
1527 break;
1528 }
1529
1530 if (priv->pending_tx_pkts < oldcount) {
1531 wiphy_notice(hw->wiphy,
1532 "waiting for tx rings to drain (%d -> %d pkts)\n",
1533 oldcount, priv->pending_tx_pkts);
1534 retry = 1;
1535 continue;
1536 }
1537
1538 priv->tx_wait = NULL;
1539
1540 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1541 MWL8K_TX_WAIT_TIMEOUT_MS);
1542 mwl8k_dump_tx_rings(hw);
1543
1544 rc = -ETIMEDOUT;
1545 }
1546 spin_unlock_bh(&priv->tx_lock);
1547
1548 return rc;
1549 }
1550
1551 #define MWL8K_TXD_SUCCESS(status) \
1552 ((status) & (MWL8K_TXD_STATUS_OK | \
1553 MWL8K_TXD_STATUS_OK_RETRY | \
1554 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1555
1556 static int mwl8k_tid_queue_mapping(u8 tid)
1557 {
1558 BUG_ON(tid > 7);
1559
1560 switch (tid) {
1561 case 0:
1562 case 3:
1563 return IEEE80211_AC_BE;
1564 break;
1565 case 1:
1566 case 2:
1567 return IEEE80211_AC_BK;
1568 break;
1569 case 4:
1570 case 5:
1571 return IEEE80211_AC_VI;
1572 break;
1573 case 6:
1574 case 7:
1575 return IEEE80211_AC_VO;
1576 break;
1577 default:
1578 return -1;
1579 break;
1580 }
1581 }
1582
1583 /* The firmware will fill in the rate information
1584 * for each packet that gets queued in the hardware
1585 * and these macros will interpret that info.
1586 */
1587
1588 #define RI_FORMAT(a) (a & 0x0001)
1589 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1590
1591 static int
1592 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1593 {
1594 struct mwl8k_priv *priv = hw->priv;
1595 struct mwl8k_tx_queue *txq = priv->txq + index;
1596 int processed;
1597
1598 processed = 0;
1599 while (txq->len > 0 && limit--) {
1600 int tx;
1601 struct mwl8k_tx_desc *tx_desc;
1602 unsigned long addr;
1603 int size;
1604 struct sk_buff *skb;
1605 struct ieee80211_tx_info *info;
1606 u32 status;
1607 struct ieee80211_sta *sta;
1608 struct mwl8k_sta *sta_info = NULL;
1609 u16 rate_info;
1610 struct ieee80211_hdr *wh;
1611
1612 tx = txq->head;
1613 tx_desc = txq->txd + tx;
1614
1615 status = le32_to_cpu(tx_desc->status);
1616
1617 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1618 if (!force)
1619 break;
1620 tx_desc->status &=
1621 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1622 }
1623
1624 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1625 BUG_ON(txq->len == 0);
1626 txq->len--;
1627 priv->pending_tx_pkts--;
1628
1629 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1630 size = le16_to_cpu(tx_desc->pkt_len);
1631 skb = txq->skb[tx];
1632 txq->skb[tx] = NULL;
1633
1634 BUG_ON(skb == NULL);
1635 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1636
1637 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1638
1639 wh = (struct ieee80211_hdr *) skb->data;
1640
1641 /* Mark descriptor as unused */
1642 tx_desc->pkt_phys_addr = 0;
1643 tx_desc->pkt_len = 0;
1644
1645 info = IEEE80211_SKB_CB(skb);
1646 if (ieee80211_is_data(wh->frame_control)) {
1647 sta = info->control.sta;
1648 if (sta) {
1649 sta_info = MWL8K_STA(sta);
1650 BUG_ON(sta_info == NULL);
1651 rate_info = le16_to_cpu(tx_desc->rate_info);
1652 /* If rate is < 6.5 Mpbs for an ht station
1653 * do not form an ampdu. If the station is a
1654 * legacy station (format = 0), do not form an
1655 * ampdu
1656 */
1657 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1658 RI_FORMAT(rate_info) == 0) {
1659 sta_info->is_ampdu_allowed = false;
1660 } else {
1661 sta_info->is_ampdu_allowed = true;
1662 }
1663 }
1664 }
1665
1666 ieee80211_tx_info_clear_status(info);
1667
1668 /* Rate control is happening in the firmware.
1669 * Ensure no tx rate is being reported.
1670 */
1671 info->status.rates[0].idx = -1;
1672 info->status.rates[0].count = 1;
1673
1674 if (MWL8K_TXD_SUCCESS(status))
1675 info->flags |= IEEE80211_TX_STAT_ACK;
1676
1677 ieee80211_tx_status_irqsafe(hw, skb);
1678
1679 processed++;
1680 }
1681
1682 return processed;
1683 }
1684
1685 /* must be called only when the card's transmit is completely halted */
1686 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1687 {
1688 struct mwl8k_priv *priv = hw->priv;
1689 struct mwl8k_tx_queue *txq = priv->txq + index;
1690
1691 if (txq->txd == NULL)
1692 return;
1693
1694 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1695
1696 kfree(txq->skb);
1697 txq->skb = NULL;
1698
1699 pci_free_consistent(priv->pdev,
1700 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1701 txq->txd, txq->txd_dma);
1702 txq->txd = NULL;
1703 }
1704
1705 /* caller must hold priv->stream_lock when calling the stream functions */
1706 static struct mwl8k_ampdu_stream *
1707 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1708 {
1709 struct mwl8k_ampdu_stream *stream;
1710 struct mwl8k_priv *priv = hw->priv;
1711 int i;
1712
1713 for (i = 0; i < priv->num_ampdu_queues; i++) {
1714 stream = &priv->ampdu[i];
1715 if (stream->state == AMPDU_NO_STREAM) {
1716 stream->sta = sta;
1717 stream->state = AMPDU_STREAM_NEW;
1718 stream->tid = tid;
1719 stream->idx = i;
1720 stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1721 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1722 sta->addr, tid);
1723 return stream;
1724 }
1725 }
1726 return NULL;
1727 }
1728
1729 static int
1730 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1731 {
1732 int ret;
1733
1734 /* if the stream has already been started, don't start it again */
1735 if (stream->state != AMPDU_STREAM_NEW)
1736 return 0;
1737 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1738 if (ret)
1739 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1740 "%d\n", stream->sta->addr, stream->tid, ret);
1741 else
1742 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1743 stream->sta->addr, stream->tid);
1744 return ret;
1745 }
1746
1747 static void
1748 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1749 {
1750 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1751 stream->tid);
1752 memset(stream, 0, sizeof(*stream));
1753 }
1754
1755 static struct mwl8k_ampdu_stream *
1756 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1757 {
1758 struct mwl8k_priv *priv = hw->priv;
1759 int i;
1760
1761 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1762 struct mwl8k_ampdu_stream *stream;
1763 stream = &priv->ampdu[i];
1764 if (stream->state == AMPDU_NO_STREAM)
1765 continue;
1766 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1767 stream->tid == tid)
1768 return stream;
1769 }
1770 return NULL;
1771 }
1772
1773 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1774 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1775 {
1776 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1777 struct tx_traffic_info *tx_stats;
1778
1779 BUG_ON(tid >= MWL8K_MAX_TID);
1780 tx_stats = &sta_info->tx_stats[tid];
1781
1782 return sta_info->is_ampdu_allowed &&
1783 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1784 }
1785
1786 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1787 {
1788 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1789 struct tx_traffic_info *tx_stats;
1790
1791 BUG_ON(tid >= MWL8K_MAX_TID);
1792 tx_stats = &sta_info->tx_stats[tid];
1793
1794 if (tx_stats->start_time == 0)
1795 tx_stats->start_time = jiffies;
1796
1797 /* reset the packet count after each second elapses. If the number of
1798 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1799 * an ampdu stream to be started.
1800 */
1801 if (jiffies - tx_stats->start_time > HZ) {
1802 tx_stats->pkts = 0;
1803 tx_stats->start_time = 0;
1804 } else
1805 tx_stats->pkts++;
1806 }
1807
1808 static void
1809 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1810 {
1811 struct mwl8k_priv *priv = hw->priv;
1812 struct ieee80211_tx_info *tx_info;
1813 struct mwl8k_vif *mwl8k_vif;
1814 struct ieee80211_sta *sta;
1815 struct ieee80211_hdr *wh;
1816 struct mwl8k_tx_queue *txq;
1817 struct mwl8k_tx_desc *tx;
1818 dma_addr_t dma;
1819 u32 txstatus;
1820 u8 txdatarate;
1821 u16 qos;
1822 int txpriority;
1823 u8 tid = 0;
1824 struct mwl8k_ampdu_stream *stream = NULL;
1825 bool start_ba_session = false;
1826 bool mgmtframe = false;
1827 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1828
1829 wh = (struct ieee80211_hdr *)skb->data;
1830 if (ieee80211_is_data_qos(wh->frame_control))
1831 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1832 else
1833 qos = 0;
1834
1835 if (ieee80211_is_mgmt(wh->frame_control))
1836 mgmtframe = true;
1837
1838 if (priv->ap_fw)
1839 mwl8k_encapsulate_tx_frame(priv, skb);
1840 else
1841 mwl8k_add_dma_header(priv, skb, 0, 0);
1842
1843 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1844
1845 tx_info = IEEE80211_SKB_CB(skb);
1846 sta = tx_info->control.sta;
1847 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1848
1849 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1850 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1851 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1852 mwl8k_vif->seqno += 0x10;
1853 }
1854
1855 /* Setup firmware control bit fields for each frame type. */
1856 txstatus = 0;
1857 txdatarate = 0;
1858 if (ieee80211_is_mgmt(wh->frame_control) ||
1859 ieee80211_is_ctl(wh->frame_control)) {
1860 txdatarate = 0;
1861 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1862 } else if (ieee80211_is_data(wh->frame_control)) {
1863 txdatarate = 1;
1864 if (is_multicast_ether_addr(wh->addr1))
1865 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1866
1867 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1868 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1869 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1870 else
1871 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1872 }
1873
1874 /* Queue ADDBA request in the respective data queue. While setting up
1875 * the ampdu stream, mac80211 queues further packets for that
1876 * particular ra/tid pair. However, packets piled up in the hardware
1877 * for that ra/tid pair will still go out. ADDBA request and the
1878 * related data packets going out from different queues asynchronously
1879 * will cause a shift in the receiver window which might result in
1880 * ampdu packets getting dropped at the receiver after the stream has
1881 * been setup.
1882 */
1883 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1884 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1885 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1886 priv->ap_fw)) {
1887 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1888 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1889 index = mwl8k_tid_queue_mapping(tid);
1890 }
1891
1892 txpriority = index;
1893
1894 if (ieee80211_is_data_qos(wh->frame_control) &&
1895 skb->protocol != cpu_to_be16(ETH_P_PAE) &&
1896 sta->ht_cap.ht_supported && priv->ap_fw) {
1897 tid = qos & 0xf;
1898 mwl8k_tx_count_packet(sta, tid);
1899 spin_lock(&priv->stream_lock);
1900 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1901 if (stream != NULL) {
1902 if (stream->state == AMPDU_STREAM_ACTIVE) {
1903 txpriority = stream->txq_idx;
1904 index = stream->txq_idx;
1905 } else if (stream->state == AMPDU_STREAM_NEW) {
1906 /* We get here if the driver sends us packets
1907 * after we've initiated a stream, but before
1908 * our ampdu_action routine has been called
1909 * with IEEE80211_AMPDU_TX_START to get the SSN
1910 * for the ADDBA request. So this packet can
1911 * go out with no risk of sequence number
1912 * mismatch. No special handling is required.
1913 */
1914 } else {
1915 /* Drop packets that would go out after the
1916 * ADDBA request was sent but before the ADDBA
1917 * response is received. If we don't do this,
1918 * the recipient would probably receive it
1919 * after the ADDBA request with SSN 0. This
1920 * will cause the recipient's BA receive window
1921 * to shift, which would cause the subsequent
1922 * packets in the BA stream to be discarded.
1923 * mac80211 queues our packets for us in this
1924 * case, so this is really just a safety check.
1925 */
1926 wiphy_warn(hw->wiphy,
1927 "Cannot send packet while ADDBA "
1928 "dialog is underway.\n");
1929 spin_unlock(&priv->stream_lock);
1930 dev_kfree_skb(skb);
1931 return;
1932 }
1933 } else {
1934 /* Defer calling mwl8k_start_stream so that the current
1935 * skb can go out before the ADDBA request. This
1936 * prevents sequence number mismatch at the recepient
1937 * as described above.
1938 */
1939 if (mwl8k_ampdu_allowed(sta, tid)) {
1940 stream = mwl8k_add_stream(hw, sta, tid);
1941 if (stream != NULL)
1942 start_ba_session = true;
1943 }
1944 }
1945 spin_unlock(&priv->stream_lock);
1946 }
1947
1948 dma = pci_map_single(priv->pdev, skb->data,
1949 skb->len, PCI_DMA_TODEVICE);
1950
1951 if (pci_dma_mapping_error(priv->pdev, dma)) {
1952 wiphy_debug(hw->wiphy,
1953 "failed to dma map skb, dropping TX frame.\n");
1954 if (start_ba_session) {
1955 spin_lock(&priv->stream_lock);
1956 mwl8k_remove_stream(hw, stream);
1957 spin_unlock(&priv->stream_lock);
1958 }
1959 dev_kfree_skb(skb);
1960 return;
1961 }
1962
1963 spin_lock_bh(&priv->tx_lock);
1964
1965 txq = priv->txq + index;
1966
1967 /* Mgmt frames that go out frequently are probe
1968 * responses. Other mgmt frames got out relatively
1969 * infrequently. Hence reserve 2 buffers so that
1970 * other mgmt frames do not get dropped due to an
1971 * already queued probe response in one of the
1972 * reserved buffers.
1973 */
1974
1975 if (txq->len >= MWL8K_TX_DESCS - 2) {
1976 if (mgmtframe == false ||
1977 txq->len == MWL8K_TX_DESCS) {
1978 if (start_ba_session) {
1979 spin_lock(&priv->stream_lock);
1980 mwl8k_remove_stream(hw, stream);
1981 spin_unlock(&priv->stream_lock);
1982 }
1983 spin_unlock_bh(&priv->tx_lock);
1984 dev_kfree_skb(skb);
1985 return;
1986 }
1987 }
1988
1989 BUG_ON(txq->skb[txq->tail] != NULL);
1990 txq->skb[txq->tail] = skb;
1991
1992 tx = txq->txd + txq->tail;
1993 tx->data_rate = txdatarate;
1994 tx->tx_priority = txpriority;
1995 tx->qos_control = cpu_to_le16(qos);
1996 tx->pkt_phys_addr = cpu_to_le32(dma);
1997 tx->pkt_len = cpu_to_le16(skb->len);
1998 tx->rate_info = 0;
1999 if (!priv->ap_fw && tx_info->control.sta != NULL)
2000 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
2001 else
2002 tx->peer_id = 0;
2003
2004 if (priv->ap_fw)
2005 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2006 MWL8K_HW_TIMER_REGISTER));
2007
2008 wmb();
2009 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2010
2011 txq->len++;
2012 priv->pending_tx_pkts++;
2013
2014 txq->tail++;
2015 if (txq->tail == MWL8K_TX_DESCS)
2016 txq->tail = 0;
2017
2018 mwl8k_tx_start(priv);
2019
2020 spin_unlock_bh(&priv->tx_lock);
2021
2022 /* Initiate the ampdu session here */
2023 if (start_ba_session) {
2024 spin_lock(&priv->stream_lock);
2025 if (mwl8k_start_stream(hw, stream))
2026 mwl8k_remove_stream(hw, stream);
2027 spin_unlock(&priv->stream_lock);
2028 }
2029 }
2030
2031
2032 /*
2033 * Firmware access.
2034 *
2035 * We have the following requirements for issuing firmware commands:
2036 * - Some commands require that the packet transmit path is idle when
2037 * the command is issued. (For simplicity, we'll just quiesce the
2038 * transmit path for every command.)
2039 * - There are certain sequences of commands that need to be issued to
2040 * the hardware sequentially, with no other intervening commands.
2041 *
2042 * This leads to an implementation of a "firmware lock" as a mutex that
2043 * can be taken recursively, and which is taken by both the low-level
2044 * command submission function (mwl8k_post_cmd) as well as any users of
2045 * that function that require issuing of an atomic sequence of commands,
2046 * and quiesces the transmit path whenever it's taken.
2047 */
2048 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2049 {
2050 struct mwl8k_priv *priv = hw->priv;
2051
2052 if (priv->fw_mutex_owner != current) {
2053 int rc;
2054
2055 mutex_lock(&priv->fw_mutex);
2056 ieee80211_stop_queues(hw);
2057
2058 rc = mwl8k_tx_wait_empty(hw);
2059 if (rc) {
2060 ieee80211_wake_queues(hw);
2061 mutex_unlock(&priv->fw_mutex);
2062
2063 return rc;
2064 }
2065
2066 priv->fw_mutex_owner = current;
2067 }
2068
2069 priv->fw_mutex_depth++;
2070
2071 return 0;
2072 }
2073
2074 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2075 {
2076 struct mwl8k_priv *priv = hw->priv;
2077
2078 if (!--priv->fw_mutex_depth) {
2079 ieee80211_wake_queues(hw);
2080 priv->fw_mutex_owner = NULL;
2081 mutex_unlock(&priv->fw_mutex);
2082 }
2083 }
2084
2085
2086 /*
2087 * Command processing.
2088 */
2089
2090 /* Timeout firmware commands after 10s */
2091 #define MWL8K_CMD_TIMEOUT_MS 10000
2092
2093 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2094 {
2095 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2096 struct mwl8k_priv *priv = hw->priv;
2097 void __iomem *regs = priv->regs;
2098 dma_addr_t dma_addr;
2099 unsigned int dma_size;
2100 int rc;
2101 unsigned long timeout = 0;
2102 u8 buf[32];
2103
2104 cmd->result = (__force __le16) 0xffff;
2105 dma_size = le16_to_cpu(cmd->length);
2106 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2107 PCI_DMA_BIDIRECTIONAL);
2108 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2109 return -ENOMEM;
2110
2111 rc = mwl8k_fw_lock(hw);
2112 if (rc) {
2113 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2114 PCI_DMA_BIDIRECTIONAL);
2115 return rc;
2116 }
2117
2118 priv->hostcmd_wait = &cmd_wait;
2119 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2120 iowrite32(MWL8K_H2A_INT_DOORBELL,
2121 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2122 iowrite32(MWL8K_H2A_INT_DUMMY,
2123 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2124
2125 timeout = wait_for_completion_timeout(&cmd_wait,
2126 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2127
2128 priv->hostcmd_wait = NULL;
2129
2130 mwl8k_fw_unlock(hw);
2131
2132 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2133 PCI_DMA_BIDIRECTIONAL);
2134
2135 if (!timeout) {
2136 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2137 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2138 MWL8K_CMD_TIMEOUT_MS);
2139 rc = -ETIMEDOUT;
2140 } else {
2141 int ms;
2142
2143 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2144
2145 rc = cmd->result ? -EINVAL : 0;
2146 if (rc)
2147 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2148 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2149 le16_to_cpu(cmd->result));
2150 else if (ms > 2000)
2151 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2152 mwl8k_cmd_name(cmd->code,
2153 buf, sizeof(buf)),
2154 ms);
2155 }
2156
2157 return rc;
2158 }
2159
2160 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2161 struct ieee80211_vif *vif,
2162 struct mwl8k_cmd_pkt *cmd)
2163 {
2164 if (vif != NULL)
2165 cmd->macid = MWL8K_VIF(vif)->macid;
2166 return mwl8k_post_cmd(hw, cmd);
2167 }
2168
2169 /*
2170 * Setup code shared between STA and AP firmware images.
2171 */
2172 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2173 {
2174 struct mwl8k_priv *priv = hw->priv;
2175
2176 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2177 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2178
2179 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2180 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2181
2182 priv->band_24.band = IEEE80211_BAND_2GHZ;
2183 priv->band_24.channels = priv->channels_24;
2184 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2185 priv->band_24.bitrates = priv->rates_24;
2186 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2187
2188 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2189 }
2190
2191 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2192 {
2193 struct mwl8k_priv *priv = hw->priv;
2194
2195 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2196 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2197
2198 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2199 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2200
2201 priv->band_50.band = IEEE80211_BAND_5GHZ;
2202 priv->band_50.channels = priv->channels_50;
2203 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2204 priv->band_50.bitrates = priv->rates_50;
2205 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2206
2207 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2208 }
2209
2210 /*
2211 * CMD_GET_HW_SPEC (STA version).
2212 */
2213 struct mwl8k_cmd_get_hw_spec_sta {
2214 struct mwl8k_cmd_pkt header;
2215 __u8 hw_rev;
2216 __u8 host_interface;
2217 __le16 num_mcaddrs;
2218 __u8 perm_addr[ETH_ALEN];
2219 __le16 region_code;
2220 __le32 fw_rev;
2221 __le32 ps_cookie;
2222 __le32 caps;
2223 __u8 mcs_bitmap[16];
2224 __le32 rx_queue_ptr;
2225 __le32 num_tx_queues;
2226 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2227 __le32 caps2;
2228 __le32 num_tx_desc_per_queue;
2229 __le32 total_rxd;
2230 } __packed;
2231
2232 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2233 #define MWL8K_CAP_GREENFIELD 0x08000000
2234 #define MWL8K_CAP_AMPDU 0x04000000
2235 #define MWL8K_CAP_RX_STBC 0x01000000
2236 #define MWL8K_CAP_TX_STBC 0x00800000
2237 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2238 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2239 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2240 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2241 #define MWL8K_CAP_DELAY_BA 0x00003000
2242 #define MWL8K_CAP_MIMO 0x00000200
2243 #define MWL8K_CAP_40MHZ 0x00000100
2244 #define MWL8K_CAP_BAND_MASK 0x00000007
2245 #define MWL8K_CAP_5GHZ 0x00000004
2246 #define MWL8K_CAP_2GHZ4 0x00000001
2247
2248 static void
2249 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2250 struct ieee80211_supported_band *band, u32 cap)
2251 {
2252 int rx_streams;
2253 int tx_streams;
2254
2255 band->ht_cap.ht_supported = 1;
2256
2257 if (cap & MWL8K_CAP_MAX_AMSDU)
2258 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2259 if (cap & MWL8K_CAP_GREENFIELD)
2260 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2261 if (cap & MWL8K_CAP_AMPDU) {
2262 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2263 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2264 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2265 }
2266 if (cap & MWL8K_CAP_RX_STBC)
2267 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2268 if (cap & MWL8K_CAP_TX_STBC)
2269 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2270 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2271 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2272 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2273 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2274 if (cap & MWL8K_CAP_DELAY_BA)
2275 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2276 if (cap & MWL8K_CAP_40MHZ)
2277 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2278
2279 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2280 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2281
2282 band->ht_cap.mcs.rx_mask[0] = 0xff;
2283 if (rx_streams >= 2)
2284 band->ht_cap.mcs.rx_mask[1] = 0xff;
2285 if (rx_streams >= 3)
2286 band->ht_cap.mcs.rx_mask[2] = 0xff;
2287 band->ht_cap.mcs.rx_mask[4] = 0x01;
2288 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2289
2290 if (rx_streams != tx_streams) {
2291 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2292 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2293 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2294 }
2295 }
2296
2297 static void
2298 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2299 {
2300 struct mwl8k_priv *priv = hw->priv;
2301
2302 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2303 mwl8k_setup_2ghz_band(hw);
2304 if (caps & MWL8K_CAP_MIMO)
2305 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2306 }
2307
2308 if (caps & MWL8K_CAP_5GHZ) {
2309 mwl8k_setup_5ghz_band(hw);
2310 if (caps & MWL8K_CAP_MIMO)
2311 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2312 }
2313 }
2314
2315 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2316 {
2317 struct mwl8k_priv *priv = hw->priv;
2318 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2319 int rc;
2320 int i;
2321
2322 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2323 if (cmd == NULL)
2324 return -ENOMEM;
2325
2326 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2327 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2328
2329 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2330 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2331 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2332 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2333 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2334 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2335 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2336 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2337
2338 rc = mwl8k_post_cmd(hw, &cmd->header);
2339
2340 if (!rc) {
2341 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2342 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2343 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2344 priv->hw_rev = cmd->hw_rev;
2345 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2346 priv->ap_macids_supported = 0x00000000;
2347 priv->sta_macids_supported = 0x00000001;
2348 }
2349
2350 kfree(cmd);
2351 return rc;
2352 }
2353
2354 /*
2355 * CMD_GET_HW_SPEC (AP version).
2356 */
2357 struct mwl8k_cmd_get_hw_spec_ap {
2358 struct mwl8k_cmd_pkt header;
2359 __u8 hw_rev;
2360 __u8 host_interface;
2361 __le16 num_wcb;
2362 __le16 num_mcaddrs;
2363 __u8 perm_addr[ETH_ALEN];
2364 __le16 region_code;
2365 __le16 num_antenna;
2366 __le32 fw_rev;
2367 __le32 wcbbase0;
2368 __le32 rxwrptr;
2369 __le32 rxrdptr;
2370 __le32 ps_cookie;
2371 __le32 wcbbase1;
2372 __le32 wcbbase2;
2373 __le32 wcbbase3;
2374 __le32 fw_api_version;
2375 __le32 caps;
2376 __le32 num_of_ampdu_queues;
2377 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2378 } __packed;
2379
2380 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2381 {
2382 struct mwl8k_priv *priv = hw->priv;
2383 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2384 int rc, i;
2385 u32 api_version;
2386
2387 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2388 if (cmd == NULL)
2389 return -ENOMEM;
2390
2391 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2392 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2393
2394 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2395 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2396
2397 rc = mwl8k_post_cmd(hw, &cmd->header);
2398
2399 if (!rc) {
2400 int off;
2401
2402 api_version = le32_to_cpu(cmd->fw_api_version);
2403 if (priv->device_info->fw_api_ap != api_version) {
2404 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2405 " Expected %d got %d.\n", MWL8K_NAME,
2406 priv->device_info->part_name,
2407 priv->device_info->fw_api_ap,
2408 api_version);
2409 rc = -EINVAL;
2410 goto done;
2411 }
2412 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2413 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2414 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2415 priv->hw_rev = cmd->hw_rev;
2416 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2417 priv->ap_macids_supported = 0x000000ff;
2418 priv->sta_macids_supported = 0x00000000;
2419 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2420 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2421 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2422 " but we only support %d.\n",
2423 priv->num_ampdu_queues,
2424 MWL8K_MAX_AMPDU_QUEUES);
2425 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2426 }
2427 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2428 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2429
2430 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2431 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2432
2433 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2434 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2435 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2436 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2437
2438 for (i = 0; i < priv->num_ampdu_queues; i++)
2439 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2440 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2441 }
2442
2443 done:
2444 kfree(cmd);
2445 return rc;
2446 }
2447
2448 /*
2449 * CMD_SET_HW_SPEC.
2450 */
2451 struct mwl8k_cmd_set_hw_spec {
2452 struct mwl8k_cmd_pkt header;
2453 __u8 hw_rev;
2454 __u8 host_interface;
2455 __le16 num_mcaddrs;
2456 __u8 perm_addr[ETH_ALEN];
2457 __le16 region_code;
2458 __le32 fw_rev;
2459 __le32 ps_cookie;
2460 __le32 caps;
2461 __le32 rx_queue_ptr;
2462 __le32 num_tx_queues;
2463 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2464 __le32 flags;
2465 __le32 num_tx_desc_per_queue;
2466 __le32 total_rxd;
2467 } __packed;
2468
2469 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2470 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2471 * the packets that are queued for more than 500ms, will be dropped in the
2472 * hardware. This helps minimizing the issues caused due to head-of-line
2473 * blocking where a slow client can hog the bandwidth and affect traffic to a
2474 * faster client.
2475 */
2476 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2477 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2478 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2479 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2480
2481 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2482 {
2483 struct mwl8k_priv *priv = hw->priv;
2484 struct mwl8k_cmd_set_hw_spec *cmd;
2485 int rc;
2486 int i;
2487
2488 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2489 if (cmd == NULL)
2490 return -ENOMEM;
2491
2492 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2493 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2494
2495 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2496 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2497 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2498
2499 /*
2500 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2501 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2502 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2503 * priority is interpreted the right way in firmware.
2504 */
2505 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2506 int j = mwl8k_tx_queues(priv) - 1 - i;
2507 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2508 }
2509
2510 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2511 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2512 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2513 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY);
2514 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2515 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2516
2517 rc = mwl8k_post_cmd(hw, &cmd->header);
2518 kfree(cmd);
2519
2520 return rc;
2521 }
2522
2523 /*
2524 * CMD_MAC_MULTICAST_ADR.
2525 */
2526 struct mwl8k_cmd_mac_multicast_adr {
2527 struct mwl8k_cmd_pkt header;
2528 __le16 action;
2529 __le16 numaddr;
2530 __u8 addr[0][ETH_ALEN];
2531 };
2532
2533 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2534 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2535 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2536 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2537
2538 static struct mwl8k_cmd_pkt *
2539 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2540 struct netdev_hw_addr_list *mc_list)
2541 {
2542 struct mwl8k_priv *priv = hw->priv;
2543 struct mwl8k_cmd_mac_multicast_adr *cmd;
2544 int size;
2545 int mc_count = 0;
2546
2547 if (mc_list)
2548 mc_count = netdev_hw_addr_list_count(mc_list);
2549
2550 if (allmulti || mc_count > priv->num_mcaddrs) {
2551 allmulti = 1;
2552 mc_count = 0;
2553 }
2554
2555 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2556
2557 cmd = kzalloc(size, GFP_ATOMIC);
2558 if (cmd == NULL)
2559 return NULL;
2560
2561 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2562 cmd->header.length = cpu_to_le16(size);
2563 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2564 MWL8K_ENABLE_RX_BROADCAST);
2565
2566 if (allmulti) {
2567 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2568 } else if (mc_count) {
2569 struct netdev_hw_addr *ha;
2570 int i = 0;
2571
2572 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2573 cmd->numaddr = cpu_to_le16(mc_count);
2574 netdev_hw_addr_list_for_each(ha, mc_list) {
2575 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2576 }
2577 }
2578
2579 return &cmd->header;
2580 }
2581
2582 /*
2583 * CMD_GET_STAT.
2584 */
2585 struct mwl8k_cmd_get_stat {
2586 struct mwl8k_cmd_pkt header;
2587 __le32 stats[64];
2588 } __packed;
2589
2590 #define MWL8K_STAT_ACK_FAILURE 9
2591 #define MWL8K_STAT_RTS_FAILURE 12
2592 #define MWL8K_STAT_FCS_ERROR 24
2593 #define MWL8K_STAT_RTS_SUCCESS 11
2594
2595 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2596 struct ieee80211_low_level_stats *stats)
2597 {
2598 struct mwl8k_cmd_get_stat *cmd;
2599 int rc;
2600
2601 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2602 if (cmd == NULL)
2603 return -ENOMEM;
2604
2605 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2606 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2607
2608 rc = mwl8k_post_cmd(hw, &cmd->header);
2609 if (!rc) {
2610 stats->dot11ACKFailureCount =
2611 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2612 stats->dot11RTSFailureCount =
2613 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2614 stats->dot11FCSErrorCount =
2615 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2616 stats->dot11RTSSuccessCount =
2617 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2618 }
2619 kfree(cmd);
2620
2621 return rc;
2622 }
2623
2624 /*
2625 * CMD_RADIO_CONTROL.
2626 */
2627 struct mwl8k_cmd_radio_control {
2628 struct mwl8k_cmd_pkt header;
2629 __le16 action;
2630 __le16 control;
2631 __le16 radio_on;
2632 } __packed;
2633
2634 static int
2635 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2636 {
2637 struct mwl8k_priv *priv = hw->priv;
2638 struct mwl8k_cmd_radio_control *cmd;
2639 int rc;
2640
2641 if (enable == priv->radio_on && !force)
2642 return 0;
2643
2644 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2645 if (cmd == NULL)
2646 return -ENOMEM;
2647
2648 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2649 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2650 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2651 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2652 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2653
2654 rc = mwl8k_post_cmd(hw, &cmd->header);
2655 kfree(cmd);
2656
2657 if (!rc)
2658 priv->radio_on = enable;
2659
2660 return rc;
2661 }
2662
2663 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2664 {
2665 return mwl8k_cmd_radio_control(hw, 0, 0);
2666 }
2667
2668 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2669 {
2670 return mwl8k_cmd_radio_control(hw, 1, 0);
2671 }
2672
2673 static int
2674 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2675 {
2676 struct mwl8k_priv *priv = hw->priv;
2677
2678 priv->radio_short_preamble = short_preamble;
2679
2680 return mwl8k_cmd_radio_control(hw, 1, 1);
2681 }
2682
2683 /*
2684 * CMD_RF_TX_POWER.
2685 */
2686 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2687
2688 struct mwl8k_cmd_rf_tx_power {
2689 struct mwl8k_cmd_pkt header;
2690 __le16 action;
2691 __le16 support_level;
2692 __le16 current_level;
2693 __le16 reserved;
2694 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2695 } __packed;
2696
2697 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2698 {
2699 struct mwl8k_cmd_rf_tx_power *cmd;
2700 int rc;
2701
2702 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2703 if (cmd == NULL)
2704 return -ENOMEM;
2705
2706 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2707 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2708 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2709 cmd->support_level = cpu_to_le16(dBm);
2710
2711 rc = mwl8k_post_cmd(hw, &cmd->header);
2712 kfree(cmd);
2713
2714 return rc;
2715 }
2716
2717 /*
2718 * CMD_TX_POWER.
2719 */
2720 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2721
2722 struct mwl8k_cmd_tx_power {
2723 struct mwl8k_cmd_pkt header;
2724 __le16 action;
2725 __le16 band;
2726 __le16 channel;
2727 __le16 bw;
2728 __le16 sub_ch;
2729 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2730 } __packed;
2731
2732 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2733 struct ieee80211_conf *conf,
2734 unsigned short pwr)
2735 {
2736 struct ieee80211_channel *channel = conf->channel;
2737 struct mwl8k_cmd_tx_power *cmd;
2738 int rc;
2739 int i;
2740
2741 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2742 if (cmd == NULL)
2743 return -ENOMEM;
2744
2745 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2746 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2747 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2748
2749 if (channel->band == IEEE80211_BAND_2GHZ)
2750 cmd->band = cpu_to_le16(0x1);
2751 else if (channel->band == IEEE80211_BAND_5GHZ)
2752 cmd->band = cpu_to_le16(0x4);
2753
2754 cmd->channel = channel->hw_value;
2755
2756 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2757 conf->channel_type == NL80211_CHAN_HT20) {
2758 cmd->bw = cpu_to_le16(0x2);
2759 } else {
2760 cmd->bw = cpu_to_le16(0x4);
2761 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2762 cmd->sub_ch = cpu_to_le16(0x3);
2763 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2764 cmd->sub_ch = cpu_to_le16(0x1);
2765 }
2766
2767 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2768 cmd->power_level_list[i] = cpu_to_le16(pwr);
2769
2770 rc = mwl8k_post_cmd(hw, &cmd->header);
2771 kfree(cmd);
2772
2773 return rc;
2774 }
2775
2776 /*
2777 * CMD_RF_ANTENNA.
2778 */
2779 struct mwl8k_cmd_rf_antenna {
2780 struct mwl8k_cmd_pkt header;
2781 __le16 antenna;
2782 __le16 mode;
2783 } __packed;
2784
2785 #define MWL8K_RF_ANTENNA_RX 1
2786 #define MWL8K_RF_ANTENNA_TX 2
2787
2788 static int
2789 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2790 {
2791 struct mwl8k_cmd_rf_antenna *cmd;
2792 int rc;
2793
2794 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2795 if (cmd == NULL)
2796 return -ENOMEM;
2797
2798 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2799 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2800 cmd->antenna = cpu_to_le16(antenna);
2801 cmd->mode = cpu_to_le16(mask);
2802
2803 rc = mwl8k_post_cmd(hw, &cmd->header);
2804 kfree(cmd);
2805
2806 return rc;
2807 }
2808
2809 /*
2810 * CMD_SET_BEACON.
2811 */
2812 struct mwl8k_cmd_set_beacon {
2813 struct mwl8k_cmd_pkt header;
2814 __le16 beacon_len;
2815 __u8 beacon[0];
2816 };
2817
2818 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2819 struct ieee80211_vif *vif, u8 *beacon, int len)
2820 {
2821 struct mwl8k_cmd_set_beacon *cmd;
2822 int rc;
2823
2824 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2825 if (cmd == NULL)
2826 return -ENOMEM;
2827
2828 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2829 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2830 cmd->beacon_len = cpu_to_le16(len);
2831 memcpy(cmd->beacon, beacon, len);
2832
2833 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2834 kfree(cmd);
2835
2836 return rc;
2837 }
2838
2839 /*
2840 * CMD_SET_PRE_SCAN.
2841 */
2842 struct mwl8k_cmd_set_pre_scan {
2843 struct mwl8k_cmd_pkt header;
2844 } __packed;
2845
2846 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2847 {
2848 struct mwl8k_cmd_set_pre_scan *cmd;
2849 int rc;
2850
2851 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2852 if (cmd == NULL)
2853 return -ENOMEM;
2854
2855 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2856 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2857
2858 rc = mwl8k_post_cmd(hw, &cmd->header);
2859 kfree(cmd);
2860
2861 return rc;
2862 }
2863
2864 /*
2865 * CMD_SET_POST_SCAN.
2866 */
2867 struct mwl8k_cmd_set_post_scan {
2868 struct mwl8k_cmd_pkt header;
2869 __le32 isibss;
2870 __u8 bssid[ETH_ALEN];
2871 } __packed;
2872
2873 static int
2874 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2875 {
2876 struct mwl8k_cmd_set_post_scan *cmd;
2877 int rc;
2878
2879 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2880 if (cmd == NULL)
2881 return -ENOMEM;
2882
2883 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2884 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2885 cmd->isibss = 0;
2886 memcpy(cmd->bssid, mac, ETH_ALEN);
2887
2888 rc = mwl8k_post_cmd(hw, &cmd->header);
2889 kfree(cmd);
2890
2891 return rc;
2892 }
2893
2894 /*
2895 * CMD_SET_RF_CHANNEL.
2896 */
2897 struct mwl8k_cmd_set_rf_channel {
2898 struct mwl8k_cmd_pkt header;
2899 __le16 action;
2900 __u8 current_channel;
2901 __le32 channel_flags;
2902 } __packed;
2903
2904 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2905 struct ieee80211_conf *conf)
2906 {
2907 struct ieee80211_channel *channel = conf->channel;
2908 struct mwl8k_cmd_set_rf_channel *cmd;
2909 int rc;
2910
2911 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2912 if (cmd == NULL)
2913 return -ENOMEM;
2914
2915 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2916 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2917 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2918 cmd->current_channel = channel->hw_value;
2919
2920 if (channel->band == IEEE80211_BAND_2GHZ)
2921 cmd->channel_flags |= cpu_to_le32(0x00000001);
2922 else if (channel->band == IEEE80211_BAND_5GHZ)
2923 cmd->channel_flags |= cpu_to_le32(0x00000004);
2924
2925 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2926 conf->channel_type == NL80211_CHAN_HT20)
2927 cmd->channel_flags |= cpu_to_le32(0x00000080);
2928 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2929 cmd->channel_flags |= cpu_to_le32(0x000001900);
2930 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2931 cmd->channel_flags |= cpu_to_le32(0x000000900);
2932
2933 rc = mwl8k_post_cmd(hw, &cmd->header);
2934 kfree(cmd);
2935
2936 return rc;
2937 }
2938
2939 /*
2940 * CMD_SET_AID.
2941 */
2942 #define MWL8K_FRAME_PROT_DISABLED 0x00
2943 #define MWL8K_FRAME_PROT_11G 0x07
2944 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2945 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2946
2947 struct mwl8k_cmd_update_set_aid {
2948 struct mwl8k_cmd_pkt header;
2949 __le16 aid;
2950
2951 /* AP's MAC address (BSSID) */
2952 __u8 bssid[ETH_ALEN];
2953 __le16 protection_mode;
2954 __u8 supp_rates[14];
2955 } __packed;
2956
2957 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2958 {
2959 int i;
2960 int j;
2961
2962 /*
2963 * Clear nonstandard rates 4 and 13.
2964 */
2965 mask &= 0x1fef;
2966
2967 for (i = 0, j = 0; i < 14; i++) {
2968 if (mask & (1 << i))
2969 rates[j++] = mwl8k_rates_24[i].hw_value;
2970 }
2971 }
2972
2973 static int
2974 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2975 struct ieee80211_vif *vif, u32 legacy_rate_mask)
2976 {
2977 struct mwl8k_cmd_update_set_aid *cmd;
2978 u16 prot_mode;
2979 int rc;
2980
2981 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2982 if (cmd == NULL)
2983 return -ENOMEM;
2984
2985 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2986 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2987 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2988 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2989
2990 if (vif->bss_conf.use_cts_prot) {
2991 prot_mode = MWL8K_FRAME_PROT_11G;
2992 } else {
2993 switch (vif->bss_conf.ht_operation_mode &
2994 IEEE80211_HT_OP_MODE_PROTECTION) {
2995 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2996 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2997 break;
2998 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2999 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3000 break;
3001 default:
3002 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3003 break;
3004 }
3005 }
3006 cmd->protection_mode = cpu_to_le16(prot_mode);
3007
3008 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3009
3010 rc = mwl8k_post_cmd(hw, &cmd->header);
3011 kfree(cmd);
3012
3013 return rc;
3014 }
3015
3016 /*
3017 * CMD_SET_RATE.
3018 */
3019 struct mwl8k_cmd_set_rate {
3020 struct mwl8k_cmd_pkt header;
3021 __u8 legacy_rates[14];
3022
3023 /* Bitmap for supported MCS codes. */
3024 __u8 mcs_set[16];
3025 __u8 reserved[16];
3026 } __packed;
3027
3028 static int
3029 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3030 u32 legacy_rate_mask, u8 *mcs_rates)
3031 {
3032 struct mwl8k_cmd_set_rate *cmd;
3033 int rc;
3034
3035 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3036 if (cmd == NULL)
3037 return -ENOMEM;
3038
3039 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3040 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3041 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3042 memcpy(cmd->mcs_set, mcs_rates, 16);
3043
3044 rc = mwl8k_post_cmd(hw, &cmd->header);
3045 kfree(cmd);
3046
3047 return rc;
3048 }
3049
3050 /*
3051 * CMD_FINALIZE_JOIN.
3052 */
3053 #define MWL8K_FJ_BEACON_MAXLEN 128
3054
3055 struct mwl8k_cmd_finalize_join {
3056 struct mwl8k_cmd_pkt header;
3057 __le32 sleep_interval; /* Number of beacon periods to sleep */
3058 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3059 } __packed;
3060
3061 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3062 int framelen, int dtim)
3063 {
3064 struct mwl8k_cmd_finalize_join *cmd;
3065 struct ieee80211_mgmt *payload = frame;
3066 int payload_len;
3067 int rc;
3068
3069 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3070 if (cmd == NULL)
3071 return -ENOMEM;
3072
3073 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3074 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3075 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3076
3077 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3078 if (payload_len < 0)
3079 payload_len = 0;
3080 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3081 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3082
3083 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3084
3085 rc = mwl8k_post_cmd(hw, &cmd->header);
3086 kfree(cmd);
3087
3088 return rc;
3089 }
3090
3091 /*
3092 * CMD_SET_RTS_THRESHOLD.
3093 */
3094 struct mwl8k_cmd_set_rts_threshold {
3095 struct mwl8k_cmd_pkt header;
3096 __le16 action;
3097 __le16 threshold;
3098 } __packed;
3099
3100 static int
3101 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3102 {
3103 struct mwl8k_cmd_set_rts_threshold *cmd;
3104 int rc;
3105
3106 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3107 if (cmd == NULL)
3108 return -ENOMEM;
3109
3110 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3111 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3112 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3113 cmd->threshold = cpu_to_le16(rts_thresh);
3114
3115 rc = mwl8k_post_cmd(hw, &cmd->header);
3116 kfree(cmd);
3117
3118 return rc;
3119 }
3120
3121 /*
3122 * CMD_SET_SLOT.
3123 */
3124 struct mwl8k_cmd_set_slot {
3125 struct mwl8k_cmd_pkt header;
3126 __le16 action;
3127 __u8 short_slot;
3128 } __packed;
3129
3130 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3131 {
3132 struct mwl8k_cmd_set_slot *cmd;
3133 int rc;
3134
3135 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3136 if (cmd == NULL)
3137 return -ENOMEM;
3138
3139 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3140 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3141 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3142 cmd->short_slot = short_slot_time;
3143
3144 rc = mwl8k_post_cmd(hw, &cmd->header);
3145 kfree(cmd);
3146
3147 return rc;
3148 }
3149
3150 /*
3151 * CMD_SET_EDCA_PARAMS.
3152 */
3153 struct mwl8k_cmd_set_edca_params {
3154 struct mwl8k_cmd_pkt header;
3155
3156 /* See MWL8K_SET_EDCA_XXX below */
3157 __le16 action;
3158
3159 /* TX opportunity in units of 32 us */
3160 __le16 txop;
3161
3162 union {
3163 struct {
3164 /* Log exponent of max contention period: 0...15 */
3165 __le32 log_cw_max;
3166
3167 /* Log exponent of min contention period: 0...15 */
3168 __le32 log_cw_min;
3169
3170 /* Adaptive interframe spacing in units of 32us */
3171 __u8 aifs;
3172
3173 /* TX queue to configure */
3174 __u8 txq;
3175 } ap;
3176 struct {
3177 /* Log exponent of max contention period: 0...15 */
3178 __u8 log_cw_max;
3179
3180 /* Log exponent of min contention period: 0...15 */
3181 __u8 log_cw_min;
3182
3183 /* Adaptive interframe spacing in units of 32us */
3184 __u8 aifs;
3185
3186 /* TX queue to configure */
3187 __u8 txq;
3188 } sta;
3189 };
3190 } __packed;
3191
3192 #define MWL8K_SET_EDCA_CW 0x01
3193 #define MWL8K_SET_EDCA_TXOP 0x02
3194 #define MWL8K_SET_EDCA_AIFS 0x04
3195
3196 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3197 MWL8K_SET_EDCA_TXOP | \
3198 MWL8K_SET_EDCA_AIFS)
3199
3200 static int
3201 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3202 __u16 cw_min, __u16 cw_max,
3203 __u8 aifs, __u16 txop)
3204 {
3205 struct mwl8k_priv *priv = hw->priv;
3206 struct mwl8k_cmd_set_edca_params *cmd;
3207 int rc;
3208
3209 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3210 if (cmd == NULL)
3211 return -ENOMEM;
3212
3213 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3214 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3215 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3216 cmd->txop = cpu_to_le16(txop);
3217 if (priv->ap_fw) {
3218 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3219 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3220 cmd->ap.aifs = aifs;
3221 cmd->ap.txq = qnum;
3222 } else {
3223 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3224 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3225 cmd->sta.aifs = aifs;
3226 cmd->sta.txq = qnum;
3227 }
3228
3229 rc = mwl8k_post_cmd(hw, &cmd->header);
3230 kfree(cmd);
3231
3232 return rc;
3233 }
3234
3235 /*
3236 * CMD_SET_WMM_MODE.
3237 */
3238 struct mwl8k_cmd_set_wmm_mode {
3239 struct mwl8k_cmd_pkt header;
3240 __le16 action;
3241 } __packed;
3242
3243 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3244 {
3245 struct mwl8k_priv *priv = hw->priv;
3246 struct mwl8k_cmd_set_wmm_mode *cmd;
3247 int rc;
3248
3249 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3250 if (cmd == NULL)
3251 return -ENOMEM;
3252
3253 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3254 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3255 cmd->action = cpu_to_le16(!!enable);
3256
3257 rc = mwl8k_post_cmd(hw, &cmd->header);
3258 kfree(cmd);
3259
3260 if (!rc)
3261 priv->wmm_enabled = enable;
3262
3263 return rc;
3264 }
3265
3266 /*
3267 * CMD_MIMO_CONFIG.
3268 */
3269 struct mwl8k_cmd_mimo_config {
3270 struct mwl8k_cmd_pkt header;
3271 __le32 action;
3272 __u8 rx_antenna_map;
3273 __u8 tx_antenna_map;
3274 } __packed;
3275
3276 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3277 {
3278 struct mwl8k_cmd_mimo_config *cmd;
3279 int rc;
3280
3281 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3282 if (cmd == NULL)
3283 return -ENOMEM;
3284
3285 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3286 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3287 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3288 cmd->rx_antenna_map = rx;
3289 cmd->tx_antenna_map = tx;
3290
3291 rc = mwl8k_post_cmd(hw, &cmd->header);
3292 kfree(cmd);
3293
3294 return rc;
3295 }
3296
3297 /*
3298 * CMD_USE_FIXED_RATE (STA version).
3299 */
3300 struct mwl8k_cmd_use_fixed_rate_sta {
3301 struct mwl8k_cmd_pkt header;
3302 __le32 action;
3303 __le32 allow_rate_drop;
3304 __le32 num_rates;
3305 struct {
3306 __le32 is_ht_rate;
3307 __le32 enable_retry;
3308 __le32 rate;
3309 __le32 retry_count;
3310 } rate_entry[8];
3311 __le32 rate_type;
3312 __le32 reserved1;
3313 __le32 reserved2;
3314 } __packed;
3315
3316 #define MWL8K_USE_AUTO_RATE 0x0002
3317 #define MWL8K_UCAST_RATE 0
3318
3319 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3320 {
3321 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3322 int rc;
3323
3324 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3325 if (cmd == NULL)
3326 return -ENOMEM;
3327
3328 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3329 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3330 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3331 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3332
3333 rc = mwl8k_post_cmd(hw, &cmd->header);
3334 kfree(cmd);
3335
3336 return rc;
3337 }
3338
3339 /*
3340 * CMD_USE_FIXED_RATE (AP version).
3341 */
3342 struct mwl8k_cmd_use_fixed_rate_ap {
3343 struct mwl8k_cmd_pkt header;
3344 __le32 action;
3345 __le32 allow_rate_drop;
3346 __le32 num_rates;
3347 struct mwl8k_rate_entry_ap {
3348 __le32 is_ht_rate;
3349 __le32 enable_retry;
3350 __le32 rate;
3351 __le32 retry_count;
3352 } rate_entry[4];
3353 u8 multicast_rate;
3354 u8 multicast_rate_type;
3355 u8 management_rate;
3356 } __packed;
3357
3358 static int
3359 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3360 {
3361 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3362 int rc;
3363
3364 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3365 if (cmd == NULL)
3366 return -ENOMEM;
3367
3368 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3369 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3370 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3371 cmd->multicast_rate = mcast;
3372 cmd->management_rate = mgmt;
3373
3374 rc = mwl8k_post_cmd(hw, &cmd->header);
3375 kfree(cmd);
3376
3377 return rc;
3378 }
3379
3380 /*
3381 * CMD_ENABLE_SNIFFER.
3382 */
3383 struct mwl8k_cmd_enable_sniffer {
3384 struct mwl8k_cmd_pkt header;
3385 __le32 action;
3386 } __packed;
3387
3388 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3389 {
3390 struct mwl8k_cmd_enable_sniffer *cmd;
3391 int rc;
3392
3393 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3394 if (cmd == NULL)
3395 return -ENOMEM;
3396
3397 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3398 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3399 cmd->action = cpu_to_le32(!!enable);
3400
3401 rc = mwl8k_post_cmd(hw, &cmd->header);
3402 kfree(cmd);
3403
3404 return rc;
3405 }
3406
3407 /*
3408 * CMD_SET_MAC_ADDR.
3409 */
3410 struct mwl8k_cmd_set_mac_addr {
3411 struct mwl8k_cmd_pkt header;
3412 union {
3413 struct {
3414 __le16 mac_type;
3415 __u8 mac_addr[ETH_ALEN];
3416 } mbss;
3417 __u8 mac_addr[ETH_ALEN];
3418 };
3419 } __packed;
3420
3421 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3422 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3423 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3424 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3425
3426 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3427 struct ieee80211_vif *vif, u8 *mac)
3428 {
3429 struct mwl8k_priv *priv = hw->priv;
3430 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3431 struct mwl8k_cmd_set_mac_addr *cmd;
3432 int mac_type;
3433 int rc;
3434
3435 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3436 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3437 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3438 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3439 else
3440 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3441 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3442 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3443 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3444 else
3445 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3446 }
3447
3448 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3449 if (cmd == NULL)
3450 return -ENOMEM;
3451
3452 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3453 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3454 if (priv->ap_fw) {
3455 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3456 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3457 } else {
3458 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3459 }
3460
3461 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3462 kfree(cmd);
3463
3464 return rc;
3465 }
3466
3467 /*
3468 * CMD_SET_RATEADAPT_MODE.
3469 */
3470 struct mwl8k_cmd_set_rate_adapt_mode {
3471 struct mwl8k_cmd_pkt header;
3472 __le16 action;
3473 __le16 mode;
3474 } __packed;
3475
3476 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3477 {
3478 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3479 int rc;
3480
3481 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3482 if (cmd == NULL)
3483 return -ENOMEM;
3484
3485 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3486 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3487 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3488 cmd->mode = cpu_to_le16(mode);
3489
3490 rc = mwl8k_post_cmd(hw, &cmd->header);
3491 kfree(cmd);
3492
3493 return rc;
3494 }
3495
3496 /*
3497 * CMD_GET_WATCHDOG_BITMAP.
3498 */
3499 struct mwl8k_cmd_get_watchdog_bitmap {
3500 struct mwl8k_cmd_pkt header;
3501 u8 bitmap;
3502 } __packed;
3503
3504 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3505 {
3506 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3507 int rc;
3508
3509 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3510 if (cmd == NULL)
3511 return -ENOMEM;
3512
3513 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3514 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3515
3516 rc = mwl8k_post_cmd(hw, &cmd->header);
3517 if (!rc)
3518 *bitmap = cmd->bitmap;
3519
3520 kfree(cmd);
3521
3522 return rc;
3523 }
3524
3525 #define INVALID_BA 0xAA
3526 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3527 {
3528 int rc;
3529 u8 bitmap = 0, stream_index;
3530 struct mwl8k_ampdu_stream *streams;
3531 struct mwl8k_priv *priv =
3532 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3533
3534 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3535 if (rc)
3536 return;
3537
3538 if (bitmap == INVALID_BA)
3539 return;
3540
3541 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3542 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3543
3544 BUG_ON(stream_index >= priv->num_ampdu_queues);
3545
3546 streams = &priv->ampdu[stream_index];
3547
3548 if (streams->state == AMPDU_STREAM_ACTIVE)
3549 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3550
3551 return;
3552 }
3553
3554
3555 /*
3556 * CMD_BSS_START.
3557 */
3558 struct mwl8k_cmd_bss_start {
3559 struct mwl8k_cmd_pkt header;
3560 __le32 enable;
3561 } __packed;
3562
3563 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3564 struct ieee80211_vif *vif, int enable)
3565 {
3566 struct mwl8k_cmd_bss_start *cmd;
3567 int rc;
3568
3569 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3570 if (cmd == NULL)
3571 return -ENOMEM;
3572
3573 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3574 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3575 cmd->enable = cpu_to_le32(enable);
3576
3577 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3578 kfree(cmd);
3579
3580 return rc;
3581 }
3582
3583 /*
3584 * CMD_BASTREAM.
3585 */
3586
3587 /*
3588 * UPSTREAM is tx direction
3589 */
3590 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3591 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3592
3593 enum ba_stream_action_type {
3594 MWL8K_BA_CREATE,
3595 MWL8K_BA_UPDATE,
3596 MWL8K_BA_DESTROY,
3597 MWL8K_BA_FLUSH,
3598 MWL8K_BA_CHECK,
3599 };
3600
3601
3602 struct mwl8k_create_ba_stream {
3603 __le32 flags;
3604 __le32 idle_thrs;
3605 __le32 bar_thrs;
3606 __le32 window_size;
3607 u8 peer_mac_addr[6];
3608 u8 dialog_token;
3609 u8 tid;
3610 u8 queue_id;
3611 u8 param_info;
3612 __le32 ba_context;
3613 u8 reset_seq_no_flag;
3614 __le16 curr_seq_no;
3615 u8 sta_src_mac_addr[6];
3616 } __packed;
3617
3618 struct mwl8k_destroy_ba_stream {
3619 __le32 flags;
3620 __le32 ba_context;
3621 } __packed;
3622
3623 struct mwl8k_cmd_bastream {
3624 struct mwl8k_cmd_pkt header;
3625 __le32 action;
3626 union {
3627 struct mwl8k_create_ba_stream create_params;
3628 struct mwl8k_destroy_ba_stream destroy_params;
3629 };
3630 } __packed;
3631
3632 static int
3633 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3634 {
3635 struct mwl8k_cmd_bastream *cmd;
3636 int rc;
3637
3638 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3639 if (cmd == NULL)
3640 return -ENOMEM;
3641
3642 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3643 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3644
3645 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3646
3647 cmd->create_params.queue_id = stream->idx;
3648 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3649 ETH_ALEN);
3650 cmd->create_params.tid = stream->tid;
3651
3652 cmd->create_params.flags =
3653 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3654 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3655
3656 rc = mwl8k_post_cmd(hw, &cmd->header);
3657
3658 kfree(cmd);
3659
3660 return rc;
3661 }
3662
3663 static int
3664 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3665 u8 buf_size)
3666 {
3667 struct mwl8k_cmd_bastream *cmd;
3668 int rc;
3669
3670 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3671 if (cmd == NULL)
3672 return -ENOMEM;
3673
3674
3675 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3676 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3677
3678 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3679
3680 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3681 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3682 cmd->create_params.queue_id = stream->idx;
3683
3684 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3685 cmd->create_params.tid = stream->tid;
3686 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3687 cmd->create_params.reset_seq_no_flag = 1;
3688
3689 cmd->create_params.param_info =
3690 (stream->sta->ht_cap.ampdu_factor &
3691 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3692 ((stream->sta->ht_cap.ampdu_density << 2) &
3693 IEEE80211_HT_AMPDU_PARM_DENSITY);
3694
3695 cmd->create_params.flags =
3696 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3697 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3698
3699 rc = mwl8k_post_cmd(hw, &cmd->header);
3700
3701 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3702 stream->sta->addr, stream->tid);
3703 kfree(cmd);
3704
3705 return rc;
3706 }
3707
3708 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3709 struct mwl8k_ampdu_stream *stream)
3710 {
3711 struct mwl8k_cmd_bastream *cmd;
3712
3713 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3714 if (cmd == NULL)
3715 return;
3716
3717 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3718 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3719 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3720
3721 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3722 mwl8k_post_cmd(hw, &cmd->header);
3723
3724 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3725
3726 kfree(cmd);
3727 }
3728
3729 /*
3730 * CMD_SET_NEW_STN.
3731 */
3732 struct mwl8k_cmd_set_new_stn {
3733 struct mwl8k_cmd_pkt header;
3734 __le16 aid;
3735 __u8 mac_addr[6];
3736 __le16 stn_id;
3737 __le16 action;
3738 __le16 rsvd;
3739 __le32 legacy_rates;
3740 __u8 ht_rates[4];
3741 __le16 cap_info;
3742 __le16 ht_capabilities_info;
3743 __u8 mac_ht_param_info;
3744 __u8 rev;
3745 __u8 control_channel;
3746 __u8 add_channel;
3747 __le16 op_mode;
3748 __le16 stbc;
3749 __u8 add_qos_info;
3750 __u8 is_qos_sta;
3751 __le32 fw_sta_ptr;
3752 } __packed;
3753
3754 #define MWL8K_STA_ACTION_ADD 0
3755 #define MWL8K_STA_ACTION_REMOVE 2
3756
3757 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3758 struct ieee80211_vif *vif,
3759 struct ieee80211_sta *sta)
3760 {
3761 struct mwl8k_cmd_set_new_stn *cmd;
3762 u32 rates;
3763 int rc;
3764
3765 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3766 if (cmd == NULL)
3767 return -ENOMEM;
3768
3769 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3770 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3771 cmd->aid = cpu_to_le16(sta->aid);
3772 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3773 cmd->stn_id = cpu_to_le16(sta->aid);
3774 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3775 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3776 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3777 else
3778 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3779 cmd->legacy_rates = cpu_to_le32(rates);
3780 if (sta->ht_cap.ht_supported) {
3781 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3782 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3783 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3784 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3785 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3786 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3787 ((sta->ht_cap.ampdu_density & 7) << 2);
3788 cmd->is_qos_sta = 1;
3789 }
3790
3791 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3792 kfree(cmd);
3793
3794 return rc;
3795 }
3796
3797 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3798 struct ieee80211_vif *vif)
3799 {
3800 struct mwl8k_cmd_set_new_stn *cmd;
3801 int rc;
3802
3803 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3804 if (cmd == NULL)
3805 return -ENOMEM;
3806
3807 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3808 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3809 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3810
3811 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3812 kfree(cmd);
3813
3814 return rc;
3815 }
3816
3817 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3818 struct ieee80211_vif *vif, u8 *addr)
3819 {
3820 struct mwl8k_cmd_set_new_stn *cmd;
3821 int rc;
3822
3823 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3824 if (cmd == NULL)
3825 return -ENOMEM;
3826
3827 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3828 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3829 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3830 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3831
3832 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3833 kfree(cmd);
3834
3835 return rc;
3836 }
3837
3838 /*
3839 * CMD_UPDATE_ENCRYPTION.
3840 */
3841
3842 #define MAX_ENCR_KEY_LENGTH 16
3843 #define MIC_KEY_LENGTH 8
3844
3845 struct mwl8k_cmd_update_encryption {
3846 struct mwl8k_cmd_pkt header;
3847
3848 __le32 action;
3849 __le32 reserved;
3850 __u8 mac_addr[6];
3851 __u8 encr_type;
3852
3853 } __packed;
3854
3855 struct mwl8k_cmd_set_key {
3856 struct mwl8k_cmd_pkt header;
3857
3858 __le32 action;
3859 __le32 reserved;
3860 __le16 length;
3861 __le16 key_type_id;
3862 __le32 key_info;
3863 __le32 key_id;
3864 __le16 key_len;
3865 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3866 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3867 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3868 __le16 tkip_rsc_low;
3869 __le32 tkip_rsc_high;
3870 __le16 tkip_tsc_low;
3871 __le32 tkip_tsc_high;
3872 __u8 mac_addr[6];
3873 } __packed;
3874
3875 enum {
3876 MWL8K_ENCR_ENABLE,
3877 MWL8K_ENCR_SET_KEY,
3878 MWL8K_ENCR_REMOVE_KEY,
3879 MWL8K_ENCR_SET_GROUP_KEY,
3880 };
3881
3882 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3883 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3884 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3885 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3886 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3887
3888 enum {
3889 MWL8K_ALG_WEP,
3890 MWL8K_ALG_TKIP,
3891 MWL8K_ALG_CCMP,
3892 };
3893
3894 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3895 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3896 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3897 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3898 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3899
3900 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3901 struct ieee80211_vif *vif,
3902 u8 *addr,
3903 u8 encr_type)
3904 {
3905 struct mwl8k_cmd_update_encryption *cmd;
3906 int rc;
3907
3908 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3909 if (cmd == NULL)
3910 return -ENOMEM;
3911
3912 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3913 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3914 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3915 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3916 cmd->encr_type = encr_type;
3917
3918 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3919 kfree(cmd);
3920
3921 return rc;
3922 }
3923
3924 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3925 u8 *addr,
3926 struct ieee80211_key_conf *key)
3927 {
3928 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3929 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3930 cmd->length = cpu_to_le16(sizeof(*cmd) -
3931 offsetof(struct mwl8k_cmd_set_key, length));
3932 cmd->key_id = cpu_to_le32(key->keyidx);
3933 cmd->key_len = cpu_to_le16(key->keylen);
3934 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3935
3936 switch (key->cipher) {
3937 case WLAN_CIPHER_SUITE_WEP40:
3938 case WLAN_CIPHER_SUITE_WEP104:
3939 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3940 if (key->keyidx == 0)
3941 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3942
3943 break;
3944 case WLAN_CIPHER_SUITE_TKIP:
3945 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3946 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3947 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3948 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3949 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3950 | MWL8K_KEY_FLAG_TSC_VALID);
3951 break;
3952 case WLAN_CIPHER_SUITE_CCMP:
3953 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3954 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3955 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3956 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3957 break;
3958 default:
3959 return -ENOTSUPP;
3960 }
3961
3962 return 0;
3963 }
3964
3965 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3966 struct ieee80211_vif *vif,
3967 u8 *addr,
3968 struct ieee80211_key_conf *key)
3969 {
3970 struct mwl8k_cmd_set_key *cmd;
3971 int rc;
3972 int keymlen;
3973 u32 action;
3974 u8 idx;
3975 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3976
3977 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3978 if (cmd == NULL)
3979 return -ENOMEM;
3980
3981 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3982 if (rc < 0)
3983 goto done;
3984
3985 idx = key->keyidx;
3986
3987 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3988 action = MWL8K_ENCR_SET_KEY;
3989 else
3990 action = MWL8K_ENCR_SET_GROUP_KEY;
3991
3992 switch (key->cipher) {
3993 case WLAN_CIPHER_SUITE_WEP40:
3994 case WLAN_CIPHER_SUITE_WEP104:
3995 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3996 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3997 sizeof(*key) + key->keylen);
3998 mwl8k_vif->wep_key_conf[idx].enabled = 1;
3999 }
4000
4001 keymlen = key->keylen;
4002 action = MWL8K_ENCR_SET_KEY;
4003 break;
4004 case WLAN_CIPHER_SUITE_TKIP:
4005 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4006 break;
4007 case WLAN_CIPHER_SUITE_CCMP:
4008 keymlen = key->keylen;
4009 break;
4010 default:
4011 rc = -ENOTSUPP;
4012 goto done;
4013 }
4014
4015 memcpy(cmd->key_material, key->key, keymlen);
4016 cmd->action = cpu_to_le32(action);
4017
4018 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4019 done:
4020 kfree(cmd);
4021
4022 return rc;
4023 }
4024
4025 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4026 struct ieee80211_vif *vif,
4027 u8 *addr,
4028 struct ieee80211_key_conf *key)
4029 {
4030 struct mwl8k_cmd_set_key *cmd;
4031 int rc;
4032 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4033
4034 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4035 if (cmd == NULL)
4036 return -ENOMEM;
4037
4038 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4039 if (rc < 0)
4040 goto done;
4041
4042 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4043 WLAN_CIPHER_SUITE_WEP104)
4044 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4045
4046 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4047
4048 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4049 done:
4050 kfree(cmd);
4051
4052 return rc;
4053 }
4054
4055 static int mwl8k_set_key(struct ieee80211_hw *hw,
4056 enum set_key_cmd cmd_param,
4057 struct ieee80211_vif *vif,
4058 struct ieee80211_sta *sta,
4059 struct ieee80211_key_conf *key)
4060 {
4061 int rc = 0;
4062 u8 encr_type;
4063 u8 *addr;
4064 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4065
4066 if (vif->type == NL80211_IFTYPE_STATION)
4067 return -EOPNOTSUPP;
4068
4069 if (sta == NULL)
4070 addr = hw->wiphy->perm_addr;
4071 else
4072 addr = sta->addr;
4073
4074 if (cmd_param == SET_KEY) {
4075 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4076 if (rc)
4077 goto out;
4078
4079 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4080 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4081 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4082 else
4083 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4084
4085 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4086 encr_type);
4087 if (rc)
4088 goto out;
4089
4090 mwl8k_vif->is_hw_crypto_enabled = true;
4091
4092 } else {
4093 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4094
4095 if (rc)
4096 goto out;
4097
4098 mwl8k_vif->is_hw_crypto_enabled = false;
4099
4100 }
4101 out:
4102 return rc;
4103 }
4104
4105 /*
4106 * CMD_UPDATE_STADB.
4107 */
4108 struct ewc_ht_info {
4109 __le16 control1;
4110 __le16 control2;
4111 __le16 control3;
4112 } __packed;
4113
4114 struct peer_capability_info {
4115 /* Peer type - AP vs. STA. */
4116 __u8 peer_type;
4117
4118 /* Basic 802.11 capabilities from assoc resp. */
4119 __le16 basic_caps;
4120
4121 /* Set if peer supports 802.11n high throughput (HT). */
4122 __u8 ht_support;
4123
4124 /* Valid if HT is supported. */
4125 __le16 ht_caps;
4126 __u8 extended_ht_caps;
4127 struct ewc_ht_info ewc_info;
4128
4129 /* Legacy rate table. Intersection of our rates and peer rates. */
4130 __u8 legacy_rates[12];
4131
4132 /* HT rate table. Intersection of our rates and peer rates. */
4133 __u8 ht_rates[16];
4134 __u8 pad[16];
4135
4136 /* If set, interoperability mode, no proprietary extensions. */
4137 __u8 interop;
4138 __u8 pad2;
4139 __u8 station_id;
4140 __le16 amsdu_enabled;
4141 } __packed;
4142
4143 struct mwl8k_cmd_update_stadb {
4144 struct mwl8k_cmd_pkt header;
4145
4146 /* See STADB_ACTION_TYPE */
4147 __le32 action;
4148
4149 /* Peer MAC address */
4150 __u8 peer_addr[ETH_ALEN];
4151
4152 __le32 reserved;
4153
4154 /* Peer info - valid during add/update. */
4155 struct peer_capability_info peer_info;
4156 } __packed;
4157
4158 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4159 #define MWL8K_STA_DB_DEL_ENTRY 2
4160
4161 /* Peer Entry flags - used to define the type of the peer node */
4162 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4163
4164 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4165 struct ieee80211_vif *vif,
4166 struct ieee80211_sta *sta)
4167 {
4168 struct mwl8k_cmd_update_stadb *cmd;
4169 struct peer_capability_info *p;
4170 u32 rates;
4171 int rc;
4172
4173 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4174 if (cmd == NULL)
4175 return -ENOMEM;
4176
4177 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4178 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4179 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4180 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4181
4182 p = &cmd->peer_info;
4183 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4184 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4185 p->ht_support = sta->ht_cap.ht_supported;
4186 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4187 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4188 ((sta->ht_cap.ampdu_density & 7) << 2);
4189 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4190 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4191 else
4192 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4193 legacy_rate_mask_to_array(p->legacy_rates, rates);
4194 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4195 p->interop = 1;
4196 p->amsdu_enabled = 0;
4197
4198 rc = mwl8k_post_cmd(hw, &cmd->header);
4199 kfree(cmd);
4200
4201 return rc ? rc : p->station_id;
4202 }
4203
4204 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4205 struct ieee80211_vif *vif, u8 *addr)
4206 {
4207 struct mwl8k_cmd_update_stadb *cmd;
4208 int rc;
4209
4210 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4211 if (cmd == NULL)
4212 return -ENOMEM;
4213
4214 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4215 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4216 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4217 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4218
4219 rc = mwl8k_post_cmd(hw, &cmd->header);
4220 kfree(cmd);
4221
4222 return rc;
4223 }
4224
4225
4226 /*
4227 * Interrupt handling.
4228 */
4229 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4230 {
4231 struct ieee80211_hw *hw = dev_id;
4232 struct mwl8k_priv *priv = hw->priv;
4233 u32 status;
4234
4235 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4236 if (!status)
4237 return IRQ_NONE;
4238
4239 if (status & MWL8K_A2H_INT_TX_DONE) {
4240 status &= ~MWL8K_A2H_INT_TX_DONE;
4241 tasklet_schedule(&priv->poll_tx_task);
4242 }
4243
4244 if (status & MWL8K_A2H_INT_RX_READY) {
4245 status &= ~MWL8K_A2H_INT_RX_READY;
4246 tasklet_schedule(&priv->poll_rx_task);
4247 }
4248
4249 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4250 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4251 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4252 }
4253
4254 if (status)
4255 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4256
4257 if (status & MWL8K_A2H_INT_OPC_DONE) {
4258 if (priv->hostcmd_wait != NULL)
4259 complete(priv->hostcmd_wait);
4260 }
4261
4262 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4263 if (!mutex_is_locked(&priv->fw_mutex) &&
4264 priv->radio_on && priv->pending_tx_pkts)
4265 mwl8k_tx_start(priv);
4266 }
4267
4268 return IRQ_HANDLED;
4269 }
4270
4271 static void mwl8k_tx_poll(unsigned long data)
4272 {
4273 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4274 struct mwl8k_priv *priv = hw->priv;
4275 int limit;
4276 int i;
4277
4278 limit = 32;
4279
4280 spin_lock_bh(&priv->tx_lock);
4281
4282 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4283 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4284
4285 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4286 complete(priv->tx_wait);
4287 priv->tx_wait = NULL;
4288 }
4289
4290 spin_unlock_bh(&priv->tx_lock);
4291
4292 if (limit) {
4293 writel(~MWL8K_A2H_INT_TX_DONE,
4294 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4295 } else {
4296 tasklet_schedule(&priv->poll_tx_task);
4297 }
4298 }
4299
4300 static void mwl8k_rx_poll(unsigned long data)
4301 {
4302 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4303 struct mwl8k_priv *priv = hw->priv;
4304 int limit;
4305
4306 limit = 32;
4307 limit -= rxq_process(hw, 0, limit);
4308 limit -= rxq_refill(hw, 0, limit);
4309
4310 if (limit) {
4311 writel(~MWL8K_A2H_INT_RX_READY,
4312 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4313 } else {
4314 tasklet_schedule(&priv->poll_rx_task);
4315 }
4316 }
4317
4318
4319 /*
4320 * Core driver operations.
4321 */
4322 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4323 {
4324 struct mwl8k_priv *priv = hw->priv;
4325 int index = skb_get_queue_mapping(skb);
4326
4327 if (!priv->radio_on) {
4328 wiphy_debug(hw->wiphy,
4329 "dropped TX frame since radio disabled\n");
4330 dev_kfree_skb(skb);
4331 return;
4332 }
4333
4334 mwl8k_txq_xmit(hw, index, skb);
4335 }
4336
4337 static int mwl8k_start(struct ieee80211_hw *hw)
4338 {
4339 struct mwl8k_priv *priv = hw->priv;
4340 int rc;
4341
4342 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4343 IRQF_SHARED, MWL8K_NAME, hw);
4344 if (rc) {
4345 priv->irq = -1;
4346 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4347 return -EIO;
4348 }
4349 priv->irq = priv->pdev->irq;
4350
4351 /* Enable TX reclaim and RX tasklets. */
4352 tasklet_enable(&priv->poll_tx_task);
4353 tasklet_enable(&priv->poll_rx_task);
4354
4355 /* Enable interrupts */
4356 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4357 iowrite32(MWL8K_A2H_EVENTS,
4358 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4359
4360 rc = mwl8k_fw_lock(hw);
4361 if (!rc) {
4362 rc = mwl8k_cmd_radio_enable(hw);
4363
4364 if (!priv->ap_fw) {
4365 if (!rc)
4366 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4367
4368 if (!rc)
4369 rc = mwl8k_cmd_set_pre_scan(hw);
4370
4371 if (!rc)
4372 rc = mwl8k_cmd_set_post_scan(hw,
4373 "\x00\x00\x00\x00\x00\x00");
4374 }
4375
4376 if (!rc)
4377 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4378
4379 if (!rc)
4380 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4381
4382 mwl8k_fw_unlock(hw);
4383 }
4384
4385 if (rc) {
4386 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4387 free_irq(priv->pdev->irq, hw);
4388 priv->irq = -1;
4389 tasklet_disable(&priv->poll_tx_task);
4390 tasklet_disable(&priv->poll_rx_task);
4391 }
4392
4393 return rc;
4394 }
4395
4396 static void mwl8k_stop(struct ieee80211_hw *hw)
4397 {
4398 struct mwl8k_priv *priv = hw->priv;
4399 int i;
4400
4401 mwl8k_cmd_radio_disable(hw);
4402
4403 ieee80211_stop_queues(hw);
4404
4405 /* Disable interrupts */
4406 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4407 if (priv->irq != -1) {
4408 free_irq(priv->pdev->irq, hw);
4409 priv->irq = -1;
4410 }
4411
4412 /* Stop finalize join worker */
4413 cancel_work_sync(&priv->finalize_join_worker);
4414 cancel_work_sync(&priv->watchdog_ba_handle);
4415 if (priv->beacon_skb != NULL)
4416 dev_kfree_skb(priv->beacon_skb);
4417
4418 /* Stop TX reclaim and RX tasklets. */
4419 tasklet_disable(&priv->poll_tx_task);
4420 tasklet_disable(&priv->poll_rx_task);
4421
4422 /* Return all skbs to mac80211 */
4423 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4424 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4425 }
4426
4427 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4428
4429 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4430 struct ieee80211_vif *vif)
4431 {
4432 struct mwl8k_priv *priv = hw->priv;
4433 struct mwl8k_vif *mwl8k_vif;
4434 u32 macids_supported;
4435 int macid, rc;
4436 struct mwl8k_device_info *di;
4437
4438 /*
4439 * Reject interface creation if sniffer mode is active, as
4440 * STA operation is mutually exclusive with hardware sniffer
4441 * mode. (Sniffer mode is only used on STA firmware.)
4442 */
4443 if (priv->sniffer_enabled) {
4444 wiphy_info(hw->wiphy,
4445 "unable to create STA interface because sniffer mode is enabled\n");
4446 return -EINVAL;
4447 }
4448
4449 di = priv->device_info;
4450 switch (vif->type) {
4451 case NL80211_IFTYPE_AP:
4452 if (!priv->ap_fw && di->fw_image_ap) {
4453 /* we must load the ap fw to meet this request */
4454 if (!list_empty(&priv->vif_list))
4455 return -EBUSY;
4456 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4457 if (rc)
4458 return rc;
4459 }
4460 macids_supported = priv->ap_macids_supported;
4461 break;
4462 case NL80211_IFTYPE_STATION:
4463 if (priv->ap_fw && di->fw_image_sta) {
4464 /* we must load the sta fw to meet this request */
4465 if (!list_empty(&priv->vif_list))
4466 return -EBUSY;
4467 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4468 if (rc)
4469 return rc;
4470 }
4471 macids_supported = priv->sta_macids_supported;
4472 break;
4473 default:
4474 return -EINVAL;
4475 }
4476
4477 macid = ffs(macids_supported & ~priv->macids_used);
4478 if (!macid--)
4479 return -EBUSY;
4480
4481 /* Setup driver private area. */
4482 mwl8k_vif = MWL8K_VIF(vif);
4483 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4484 mwl8k_vif->vif = vif;
4485 mwl8k_vif->macid = macid;
4486 mwl8k_vif->seqno = 0;
4487 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4488 mwl8k_vif->is_hw_crypto_enabled = false;
4489
4490 /* Set the mac address. */
4491 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4492
4493 if (priv->ap_fw)
4494 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4495
4496 priv->macids_used |= 1 << mwl8k_vif->macid;
4497 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4498
4499 return 0;
4500 }
4501
4502 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4503 struct ieee80211_vif *vif)
4504 {
4505 struct mwl8k_priv *priv = hw->priv;
4506 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4507
4508 if (priv->ap_fw)
4509 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4510
4511 mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4512
4513 priv->macids_used &= ~(1 << mwl8k_vif->macid);
4514 list_del(&mwl8k_vif->list);
4515 }
4516
4517 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4518 {
4519 struct ieee80211_conf *conf = &hw->conf;
4520 struct mwl8k_priv *priv = hw->priv;
4521 int rc;
4522
4523 if (conf->flags & IEEE80211_CONF_IDLE) {
4524 mwl8k_cmd_radio_disable(hw);
4525 return 0;
4526 }
4527
4528 rc = mwl8k_fw_lock(hw);
4529 if (rc)
4530 return rc;
4531
4532 rc = mwl8k_cmd_radio_enable(hw);
4533 if (rc)
4534 goto out;
4535
4536 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4537 if (rc)
4538 goto out;
4539
4540 if (conf->power_level > 18)
4541 conf->power_level = 18;
4542
4543 if (priv->ap_fw) {
4544
4545 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4546 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4547 if (rc)
4548 goto out;
4549 }
4550
4551 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4552 if (rc)
4553 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4554 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4555 if (rc)
4556 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4557
4558 } else {
4559 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4560 if (rc)
4561 goto out;
4562 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4563 }
4564
4565 out:
4566 mwl8k_fw_unlock(hw);
4567
4568 return rc;
4569 }
4570
4571 static void
4572 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4573 struct ieee80211_bss_conf *info, u32 changed)
4574 {
4575 struct mwl8k_priv *priv = hw->priv;
4576 u32 ap_legacy_rates = 0;
4577 u8 ap_mcs_rates[16];
4578 int rc;
4579
4580 if (mwl8k_fw_lock(hw))
4581 return;
4582
4583 /*
4584 * No need to capture a beacon if we're no longer associated.
4585 */
4586 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4587 priv->capture_beacon = false;
4588
4589 /*
4590 * Get the AP's legacy and MCS rates.
4591 */
4592 if (vif->bss_conf.assoc) {
4593 struct ieee80211_sta *ap;
4594
4595 rcu_read_lock();
4596
4597 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4598 if (ap == NULL) {
4599 rcu_read_unlock();
4600 goto out;
4601 }
4602
4603 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4604 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4605 } else {
4606 ap_legacy_rates =
4607 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4608 }
4609 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4610
4611 rcu_read_unlock();
4612 }
4613
4614 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4615 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4616 if (rc)
4617 goto out;
4618
4619 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4620 if (rc)
4621 goto out;
4622 }
4623
4624 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4625 rc = mwl8k_set_radio_preamble(hw,
4626 vif->bss_conf.use_short_preamble);
4627 if (rc)
4628 goto out;
4629 }
4630
4631 if (changed & BSS_CHANGED_ERP_SLOT) {
4632 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4633 if (rc)
4634 goto out;
4635 }
4636
4637 if (vif->bss_conf.assoc &&
4638 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4639 BSS_CHANGED_HT))) {
4640 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4641 if (rc)
4642 goto out;
4643 }
4644
4645 if (vif->bss_conf.assoc &&
4646 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4647 /*
4648 * Finalize the join. Tell rx handler to process
4649 * next beacon from our BSSID.
4650 */
4651 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4652 priv->capture_beacon = true;
4653 }
4654
4655 out:
4656 mwl8k_fw_unlock(hw);
4657 }
4658
4659 static void
4660 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4661 struct ieee80211_bss_conf *info, u32 changed)
4662 {
4663 int rc;
4664
4665 if (mwl8k_fw_lock(hw))
4666 return;
4667
4668 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4669 rc = mwl8k_set_radio_preamble(hw,
4670 vif->bss_conf.use_short_preamble);
4671 if (rc)
4672 goto out;
4673 }
4674
4675 if (changed & BSS_CHANGED_BASIC_RATES) {
4676 int idx;
4677 int rate;
4678
4679 /*
4680 * Use lowest supported basic rate for multicasts
4681 * and management frames (such as probe responses --
4682 * beacons will always go out at 1 Mb/s).
4683 */
4684 idx = ffs(vif->bss_conf.basic_rates);
4685 if (idx)
4686 idx--;
4687
4688 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4689 rate = mwl8k_rates_24[idx].hw_value;
4690 else
4691 rate = mwl8k_rates_50[idx].hw_value;
4692
4693 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4694 }
4695
4696 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4697 struct sk_buff *skb;
4698
4699 skb = ieee80211_beacon_get(hw, vif);
4700 if (skb != NULL) {
4701 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4702 kfree_skb(skb);
4703 }
4704 }
4705
4706 if (changed & BSS_CHANGED_BEACON_ENABLED)
4707 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4708
4709 out:
4710 mwl8k_fw_unlock(hw);
4711 }
4712
4713 static void
4714 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4715 struct ieee80211_bss_conf *info, u32 changed)
4716 {
4717 struct mwl8k_priv *priv = hw->priv;
4718
4719 if (!priv->ap_fw)
4720 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4721 else
4722 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4723 }
4724
4725 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4726 struct netdev_hw_addr_list *mc_list)
4727 {
4728 struct mwl8k_cmd_pkt *cmd;
4729
4730 /*
4731 * Synthesize and return a command packet that programs the
4732 * hardware multicast address filter. At this point we don't
4733 * know whether FIF_ALLMULTI is being requested, but if it is,
4734 * we'll end up throwing this packet away and creating a new
4735 * one in mwl8k_configure_filter().
4736 */
4737 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4738
4739 return (unsigned long)cmd;
4740 }
4741
4742 static int
4743 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4744 unsigned int changed_flags,
4745 unsigned int *total_flags)
4746 {
4747 struct mwl8k_priv *priv = hw->priv;
4748
4749 /*
4750 * Hardware sniffer mode is mutually exclusive with STA
4751 * operation, so refuse to enable sniffer mode if a STA
4752 * interface is active.
4753 */
4754 if (!list_empty(&priv->vif_list)) {
4755 if (net_ratelimit())
4756 wiphy_info(hw->wiphy,
4757 "not enabling sniffer mode because STA interface is active\n");
4758 return 0;
4759 }
4760
4761 if (!priv->sniffer_enabled) {
4762 if (mwl8k_cmd_enable_sniffer(hw, 1))
4763 return 0;
4764 priv->sniffer_enabled = true;
4765 }
4766
4767 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4768 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4769 FIF_OTHER_BSS;
4770
4771 return 1;
4772 }
4773
4774 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4775 {
4776 if (!list_empty(&priv->vif_list))
4777 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4778
4779 return NULL;
4780 }
4781
4782 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4783 unsigned int changed_flags,
4784 unsigned int *total_flags,
4785 u64 multicast)
4786 {
4787 struct mwl8k_priv *priv = hw->priv;
4788 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4789
4790 /*
4791 * AP firmware doesn't allow fine-grained control over
4792 * the receive filter.
4793 */
4794 if (priv->ap_fw) {
4795 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4796 kfree(cmd);
4797 return;
4798 }
4799
4800 /*
4801 * Enable hardware sniffer mode if FIF_CONTROL or
4802 * FIF_OTHER_BSS is requested.
4803 */
4804 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4805 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4806 kfree(cmd);
4807 return;
4808 }
4809
4810 /* Clear unsupported feature flags */
4811 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4812
4813 if (mwl8k_fw_lock(hw)) {
4814 kfree(cmd);
4815 return;
4816 }
4817
4818 if (priv->sniffer_enabled) {
4819 mwl8k_cmd_enable_sniffer(hw, 0);
4820 priv->sniffer_enabled = false;
4821 }
4822
4823 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4824 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4825 /*
4826 * Disable the BSS filter.
4827 */
4828 mwl8k_cmd_set_pre_scan(hw);
4829 } else {
4830 struct mwl8k_vif *mwl8k_vif;
4831 const u8 *bssid;
4832
4833 /*
4834 * Enable the BSS filter.
4835 *
4836 * If there is an active STA interface, use that
4837 * interface's BSSID, otherwise use a dummy one
4838 * (where the OUI part needs to be nonzero for
4839 * the BSSID to be accepted by POST_SCAN).
4840 */
4841 mwl8k_vif = mwl8k_first_vif(priv);
4842 if (mwl8k_vif != NULL)
4843 bssid = mwl8k_vif->vif->bss_conf.bssid;
4844 else
4845 bssid = "\x01\x00\x00\x00\x00\x00";
4846
4847 mwl8k_cmd_set_post_scan(hw, bssid);
4848 }
4849 }
4850
4851 /*
4852 * If FIF_ALLMULTI is being requested, throw away the command
4853 * packet that ->prepare_multicast() built and replace it with
4854 * a command packet that enables reception of all multicast
4855 * packets.
4856 */
4857 if (*total_flags & FIF_ALLMULTI) {
4858 kfree(cmd);
4859 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4860 }
4861
4862 if (cmd != NULL) {
4863 mwl8k_post_cmd(hw, cmd);
4864 kfree(cmd);
4865 }
4866
4867 mwl8k_fw_unlock(hw);
4868 }
4869
4870 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4871 {
4872 return mwl8k_cmd_set_rts_threshold(hw, value);
4873 }
4874
4875 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4876 struct ieee80211_vif *vif,
4877 struct ieee80211_sta *sta)
4878 {
4879 struct mwl8k_priv *priv = hw->priv;
4880
4881 if (priv->ap_fw)
4882 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4883 else
4884 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4885 }
4886
4887 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4888 struct ieee80211_vif *vif,
4889 struct ieee80211_sta *sta)
4890 {
4891 struct mwl8k_priv *priv = hw->priv;
4892 int ret;
4893 int i;
4894 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4895 struct ieee80211_key_conf *key;
4896
4897 if (!priv->ap_fw) {
4898 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4899 if (ret >= 0) {
4900 MWL8K_STA(sta)->peer_id = ret;
4901 if (sta->ht_cap.ht_supported)
4902 MWL8K_STA(sta)->is_ampdu_allowed = true;
4903 ret = 0;
4904 }
4905
4906 } else {
4907 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4908 }
4909
4910 for (i = 0; i < NUM_WEP_KEYS; i++) {
4911 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4912 if (mwl8k_vif->wep_key_conf[i].enabled)
4913 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4914 }
4915 return ret;
4916 }
4917
4918 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4919 const struct ieee80211_tx_queue_params *params)
4920 {
4921 struct mwl8k_priv *priv = hw->priv;
4922 int rc;
4923
4924 rc = mwl8k_fw_lock(hw);
4925 if (!rc) {
4926 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4927 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4928
4929 if (!priv->wmm_enabled)
4930 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4931
4932 if (!rc) {
4933 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4934 rc = mwl8k_cmd_set_edca_params(hw, q,
4935 params->cw_min,
4936 params->cw_max,
4937 params->aifs,
4938 params->txop);
4939 }
4940
4941 mwl8k_fw_unlock(hw);
4942 }
4943
4944 return rc;
4945 }
4946
4947 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4948 struct ieee80211_low_level_stats *stats)
4949 {
4950 return mwl8k_cmd_get_stat(hw, stats);
4951 }
4952
4953 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4954 struct survey_info *survey)
4955 {
4956 struct mwl8k_priv *priv = hw->priv;
4957 struct ieee80211_conf *conf = &hw->conf;
4958
4959 if (idx != 0)
4960 return -ENOENT;
4961
4962 survey->channel = conf->channel;
4963 survey->filled = SURVEY_INFO_NOISE_DBM;
4964 survey->noise = priv->noise;
4965
4966 return 0;
4967 }
4968
4969 #define MAX_AMPDU_ATTEMPTS 5
4970
4971 static int
4972 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4973 enum ieee80211_ampdu_mlme_action action,
4974 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4975 u8 buf_size)
4976 {
4977
4978 int i, rc = 0;
4979 struct mwl8k_priv *priv = hw->priv;
4980 struct mwl8k_ampdu_stream *stream;
4981 u8 *addr = sta->addr;
4982
4983 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4984 return -ENOTSUPP;
4985
4986 spin_lock(&priv->stream_lock);
4987 stream = mwl8k_lookup_stream(hw, addr, tid);
4988
4989 switch (action) {
4990 case IEEE80211_AMPDU_RX_START:
4991 case IEEE80211_AMPDU_RX_STOP:
4992 break;
4993 case IEEE80211_AMPDU_TX_START:
4994 /* By the time we get here the hw queues may contain outgoing
4995 * packets for this RA/TID that are not part of this BA
4996 * session. The hw will assign sequence numbers to these
4997 * packets as they go out. So if we query the hw for its next
4998 * sequence number and use that for the SSN here, it may end up
4999 * being wrong, which will lead to sequence number mismatch at
5000 * the recipient. To avoid this, we reset the sequence number
5001 * to O for the first MPDU in this BA stream.
5002 */
5003 *ssn = 0;
5004 if (stream == NULL) {
5005 /* This means that somebody outside this driver called
5006 * ieee80211_start_tx_ba_session. This is unexpected
5007 * because we do our own rate control. Just warn and
5008 * move on.
5009 */
5010 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5011 "Proceeding anyway.\n", __func__);
5012 stream = mwl8k_add_stream(hw, sta, tid);
5013 }
5014 if (stream == NULL) {
5015 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5016 rc = -EBUSY;
5017 break;
5018 }
5019 stream->state = AMPDU_STREAM_IN_PROGRESS;
5020
5021 /* Release the lock before we do the time consuming stuff */
5022 spin_unlock(&priv->stream_lock);
5023 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5024 rc = mwl8k_check_ba(hw, stream);
5025
5026 if (!rc)
5027 break;
5028 /*
5029 * HW queues take time to be flushed, give them
5030 * sufficient time
5031 */
5032
5033 msleep(1000);
5034 }
5035 spin_lock(&priv->stream_lock);
5036 if (rc) {
5037 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5038 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5039 mwl8k_remove_stream(hw, stream);
5040 rc = -EBUSY;
5041 break;
5042 }
5043 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5044 break;
5045 case IEEE80211_AMPDU_TX_STOP:
5046 if (stream == NULL)
5047 break;
5048 if (stream->state == AMPDU_STREAM_ACTIVE) {
5049 spin_unlock(&priv->stream_lock);
5050 mwl8k_destroy_ba(hw, stream);
5051 spin_lock(&priv->stream_lock);
5052 }
5053 mwl8k_remove_stream(hw, stream);
5054 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5055 break;
5056 case IEEE80211_AMPDU_TX_OPERATIONAL:
5057 BUG_ON(stream == NULL);
5058 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5059 spin_unlock(&priv->stream_lock);
5060 rc = mwl8k_create_ba(hw, stream, buf_size);
5061 spin_lock(&priv->stream_lock);
5062 if (!rc)
5063 stream->state = AMPDU_STREAM_ACTIVE;
5064 else {
5065 spin_unlock(&priv->stream_lock);
5066 mwl8k_destroy_ba(hw, stream);
5067 spin_lock(&priv->stream_lock);
5068 wiphy_debug(hw->wiphy,
5069 "Failed adding stream for sta %pM tid %d\n",
5070 addr, tid);
5071 mwl8k_remove_stream(hw, stream);
5072 }
5073 break;
5074
5075 default:
5076 rc = -ENOTSUPP;
5077 }
5078
5079 spin_unlock(&priv->stream_lock);
5080 return rc;
5081 }
5082
5083 static const struct ieee80211_ops mwl8k_ops = {
5084 .tx = mwl8k_tx,
5085 .start = mwl8k_start,
5086 .stop = mwl8k_stop,
5087 .add_interface = mwl8k_add_interface,
5088 .remove_interface = mwl8k_remove_interface,
5089 .config = mwl8k_config,
5090 .bss_info_changed = mwl8k_bss_info_changed,
5091 .prepare_multicast = mwl8k_prepare_multicast,
5092 .configure_filter = mwl8k_configure_filter,
5093 .set_key = mwl8k_set_key,
5094 .set_rts_threshold = mwl8k_set_rts_threshold,
5095 .sta_add = mwl8k_sta_add,
5096 .sta_remove = mwl8k_sta_remove,
5097 .conf_tx = mwl8k_conf_tx,
5098 .get_stats = mwl8k_get_stats,
5099 .get_survey = mwl8k_get_survey,
5100 .ampdu_action = mwl8k_ampdu_action,
5101 };
5102
5103 static void mwl8k_finalize_join_worker(struct work_struct *work)
5104 {
5105 struct mwl8k_priv *priv =
5106 container_of(work, struct mwl8k_priv, finalize_join_worker);
5107 struct sk_buff *skb = priv->beacon_skb;
5108 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5109 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5110 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5111 mgmt->u.beacon.variable, len);
5112 int dtim_period = 1;
5113
5114 if (tim && tim[1] >= 2)
5115 dtim_period = tim[3];
5116
5117 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5118
5119 dev_kfree_skb(skb);
5120 priv->beacon_skb = NULL;
5121 }
5122
5123 enum {
5124 MWL8363 = 0,
5125 MWL8687,
5126 MWL8366,
5127 };
5128
5129 #define MWL8K_8366_AP_FW_API 2
5130 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5131 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5132
5133 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5134 [MWL8363] = {
5135 .part_name = "88w8363",
5136 .helper_image = "mwl8k/helper_8363.fw",
5137 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5138 },
5139 [MWL8687] = {
5140 .part_name = "88w8687",
5141 .helper_image = "mwl8k/helper_8687.fw",
5142 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5143 },
5144 [MWL8366] = {
5145 .part_name = "88w8366",
5146 .helper_image = "mwl8k/helper_8366.fw",
5147 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5148 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5149 .fw_api_ap = MWL8K_8366_AP_FW_API,
5150 .ap_rxd_ops = &rxd_8366_ap_ops,
5151 },
5152 };
5153
5154 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5155 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5156 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5157 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5158 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5159 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5160 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5161
5162 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5163 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5164 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5165 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5166 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5167 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5168 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5169 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5170 { },
5171 };
5172 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5173
5174 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5175 {
5176 int rc;
5177 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5178 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5179 priv->fw_pref, priv->fw_alt);
5180 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5181 if (rc) {
5182 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5183 pci_name(priv->pdev), priv->fw_alt);
5184 return rc;
5185 }
5186 return 0;
5187 }
5188
5189 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5190 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5191 {
5192 struct mwl8k_priv *priv = context;
5193 struct mwl8k_device_info *di = priv->device_info;
5194 int rc;
5195
5196 switch (priv->fw_state) {
5197 case FW_STATE_INIT:
5198 if (!fw) {
5199 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5200 pci_name(priv->pdev), di->helper_image);
5201 goto fail;
5202 }
5203 priv->fw_helper = fw;
5204 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5205 true);
5206 if (rc && priv->fw_alt) {
5207 rc = mwl8k_request_alt_fw(priv);
5208 if (rc)
5209 goto fail;
5210 priv->fw_state = FW_STATE_LOADING_ALT;
5211 } else if (rc)
5212 goto fail;
5213 else
5214 priv->fw_state = FW_STATE_LOADING_PREF;
5215 break;
5216
5217 case FW_STATE_LOADING_PREF:
5218 if (!fw) {
5219 if (priv->fw_alt) {
5220 rc = mwl8k_request_alt_fw(priv);
5221 if (rc)
5222 goto fail;
5223 priv->fw_state = FW_STATE_LOADING_ALT;
5224 } else
5225 goto fail;
5226 } else {
5227 priv->fw_ucode = fw;
5228 rc = mwl8k_firmware_load_success(priv);
5229 if (rc)
5230 goto fail;
5231 else
5232 complete(&priv->firmware_loading_complete);
5233 }
5234 break;
5235
5236 case FW_STATE_LOADING_ALT:
5237 if (!fw) {
5238 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5239 pci_name(priv->pdev), di->helper_image);
5240 goto fail;
5241 }
5242 priv->fw_ucode = fw;
5243 rc = mwl8k_firmware_load_success(priv);
5244 if (rc)
5245 goto fail;
5246 else
5247 complete(&priv->firmware_loading_complete);
5248 break;
5249
5250 default:
5251 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5252 MWL8K_NAME, priv->fw_state);
5253 BUG_ON(1);
5254 }
5255
5256 return;
5257
5258 fail:
5259 priv->fw_state = FW_STATE_ERROR;
5260 complete(&priv->firmware_loading_complete);
5261 device_release_driver(&priv->pdev->dev);
5262 mwl8k_release_firmware(priv);
5263 }
5264
5265 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5266 bool nowait)
5267 {
5268 struct mwl8k_priv *priv = hw->priv;
5269 int rc;
5270
5271 /* Reset firmware and hardware */
5272 mwl8k_hw_reset(priv);
5273
5274 /* Ask userland hotplug daemon for the device firmware */
5275 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5276 if (rc) {
5277 wiphy_err(hw->wiphy, "Firmware files not found\n");
5278 return rc;
5279 }
5280
5281 if (nowait)
5282 return rc;
5283
5284 /* Load firmware into hardware */
5285 rc = mwl8k_load_firmware(hw);
5286 if (rc)
5287 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5288
5289 /* Reclaim memory once firmware is successfully loaded */
5290 mwl8k_release_firmware(priv);
5291
5292 return rc;
5293 }
5294
5295 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5296 {
5297 struct mwl8k_priv *priv = hw->priv;
5298 int rc = 0;
5299 int i;
5300
5301 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5302 rc = mwl8k_txq_init(hw, i);
5303 if (rc)
5304 break;
5305 if (priv->ap_fw)
5306 iowrite32(priv->txq[i].txd_dma,
5307 priv->sram + priv->txq_offset[i]);
5308 }
5309 return rc;
5310 }
5311
5312 /* initialize hw after successfully loading a firmware image */
5313 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5314 {
5315 struct mwl8k_priv *priv = hw->priv;
5316 int rc = 0;
5317 int i;
5318
5319 if (priv->ap_fw) {
5320 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5321 if (priv->rxd_ops == NULL) {
5322 wiphy_err(hw->wiphy,
5323 "Driver does not have AP firmware image support for this hardware\n");
5324 goto err_stop_firmware;
5325 }
5326 } else {
5327 priv->rxd_ops = &rxd_sta_ops;
5328 }
5329
5330 priv->sniffer_enabled = false;
5331 priv->wmm_enabled = false;
5332 priv->pending_tx_pkts = 0;
5333
5334 rc = mwl8k_rxq_init(hw, 0);
5335 if (rc)
5336 goto err_stop_firmware;
5337 rxq_refill(hw, 0, INT_MAX);
5338
5339 /* For the sta firmware, we need to know the dma addresses of tx queues
5340 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5341 * prior to issuing this command. But for the AP case, we learn the
5342 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5343 * case we must initialize the tx queues after.
5344 */
5345 priv->num_ampdu_queues = 0;
5346 if (!priv->ap_fw) {
5347 rc = mwl8k_init_txqs(hw);
5348 if (rc)
5349 goto err_free_queues;
5350 }
5351
5352 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5353 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5354 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5355 MWL8K_A2H_INT_BA_WATCHDOG,
5356 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5357 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5358 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5359
5360 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5361 IRQF_SHARED, MWL8K_NAME, hw);
5362 if (rc) {
5363 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5364 goto err_free_queues;
5365 }
5366
5367 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5368
5369 /*
5370 * Temporarily enable interrupts. Initial firmware host
5371 * commands use interrupts and avoid polling. Disable
5372 * interrupts when done.
5373 */
5374 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5375
5376 /* Get config data, mac addrs etc */
5377 if (priv->ap_fw) {
5378 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5379 if (!rc)
5380 rc = mwl8k_init_txqs(hw);
5381 if (!rc)
5382 rc = mwl8k_cmd_set_hw_spec(hw);
5383 } else {
5384 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5385 }
5386 if (rc) {
5387 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5388 goto err_free_irq;
5389 }
5390
5391 /* Turn radio off */
5392 rc = mwl8k_cmd_radio_disable(hw);
5393 if (rc) {
5394 wiphy_err(hw->wiphy, "Cannot disable\n");
5395 goto err_free_irq;
5396 }
5397
5398 /* Clear MAC address */
5399 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5400 if (rc) {
5401 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5402 goto err_free_irq;
5403 }
5404
5405 /* Disable interrupts */
5406 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5407 free_irq(priv->pdev->irq, hw);
5408
5409 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5410 priv->device_info->part_name,
5411 priv->hw_rev, hw->wiphy->perm_addr,
5412 priv->ap_fw ? "AP" : "STA",
5413 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5414 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5415
5416 return 0;
5417
5418 err_free_irq:
5419 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5420 free_irq(priv->pdev->irq, hw);
5421
5422 err_free_queues:
5423 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5424 mwl8k_txq_deinit(hw, i);
5425 mwl8k_rxq_deinit(hw, 0);
5426
5427 err_stop_firmware:
5428 mwl8k_hw_reset(priv);
5429
5430 return rc;
5431 }
5432
5433 /*
5434 * invoke mwl8k_reload_firmware to change the firmware image after the device
5435 * has already been registered
5436 */
5437 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5438 {
5439 int i, rc = 0;
5440 struct mwl8k_priv *priv = hw->priv;
5441
5442 mwl8k_stop(hw);
5443 mwl8k_rxq_deinit(hw, 0);
5444
5445 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5446 mwl8k_txq_deinit(hw, i);
5447
5448 rc = mwl8k_init_firmware(hw, fw_image, false);
5449 if (rc)
5450 goto fail;
5451
5452 rc = mwl8k_probe_hw(hw);
5453 if (rc)
5454 goto fail;
5455
5456 rc = mwl8k_start(hw);
5457 if (rc)
5458 goto fail;
5459
5460 rc = mwl8k_config(hw, ~0);
5461 if (rc)
5462 goto fail;
5463
5464 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5465 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
5466 if (rc)
5467 goto fail;
5468 }
5469
5470 return rc;
5471
5472 fail:
5473 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5474 return rc;
5475 }
5476
5477 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5478 {
5479 struct ieee80211_hw *hw = priv->hw;
5480 int i, rc;
5481
5482 rc = mwl8k_load_firmware(hw);
5483 mwl8k_release_firmware(priv);
5484 if (rc) {
5485 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5486 return rc;
5487 }
5488
5489 /*
5490 * Extra headroom is the size of the required DMA header
5491 * minus the size of the smallest 802.11 frame (CTS frame).
5492 */
5493 hw->extra_tx_headroom =
5494 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5495
5496 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5497
5498 hw->channel_change_time = 10;
5499
5500 hw->queues = MWL8K_TX_WMM_QUEUES;
5501
5502 /* Set rssi values to dBm */
5503 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5504 hw->vif_data_size = sizeof(struct mwl8k_vif);
5505 hw->sta_data_size = sizeof(struct mwl8k_sta);
5506
5507 priv->macids_used = 0;
5508 INIT_LIST_HEAD(&priv->vif_list);
5509
5510 /* Set default radio state and preamble */
5511 priv->radio_on = 0;
5512 priv->radio_short_preamble = 0;
5513
5514 /* Finalize join worker */
5515 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5516 /* Handle watchdog ba events */
5517 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5518
5519 /* TX reclaim and RX tasklets. */
5520 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5521 tasklet_disable(&priv->poll_tx_task);
5522 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5523 tasklet_disable(&priv->poll_rx_task);
5524
5525 /* Power management cookie */
5526 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5527 if (priv->cookie == NULL)
5528 return -ENOMEM;
5529
5530 mutex_init(&priv->fw_mutex);
5531 priv->fw_mutex_owner = NULL;
5532 priv->fw_mutex_depth = 0;
5533 priv->hostcmd_wait = NULL;
5534
5535 spin_lock_init(&priv->tx_lock);
5536
5537 spin_lock_init(&priv->stream_lock);
5538
5539 priv->tx_wait = NULL;
5540
5541 rc = mwl8k_probe_hw(hw);
5542 if (rc)
5543 goto err_free_cookie;
5544
5545 hw->wiphy->interface_modes = 0;
5546 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5547 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5548 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5549 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5550
5551 rc = ieee80211_register_hw(hw);
5552 if (rc) {
5553 wiphy_err(hw->wiphy, "Cannot register device\n");
5554 goto err_unprobe_hw;
5555 }
5556
5557 return 0;
5558
5559 err_unprobe_hw:
5560 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5561 mwl8k_txq_deinit(hw, i);
5562 mwl8k_rxq_deinit(hw, 0);
5563
5564 err_free_cookie:
5565 if (priv->cookie != NULL)
5566 pci_free_consistent(priv->pdev, 4,
5567 priv->cookie, priv->cookie_dma);
5568
5569 return rc;
5570 }
5571 static int __devinit mwl8k_probe(struct pci_dev *pdev,
5572 const struct pci_device_id *id)
5573 {
5574 static int printed_version;
5575 struct ieee80211_hw *hw;
5576 struct mwl8k_priv *priv;
5577 struct mwl8k_device_info *di;
5578 int rc;
5579
5580 if (!printed_version) {
5581 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5582 printed_version = 1;
5583 }
5584
5585
5586 rc = pci_enable_device(pdev);
5587 if (rc) {
5588 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5589 MWL8K_NAME);
5590 return rc;
5591 }
5592
5593 rc = pci_request_regions(pdev, MWL8K_NAME);
5594 if (rc) {
5595 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5596 MWL8K_NAME);
5597 goto err_disable_device;
5598 }
5599
5600 pci_set_master(pdev);
5601
5602
5603 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5604 if (hw == NULL) {
5605 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5606 rc = -ENOMEM;
5607 goto err_free_reg;
5608 }
5609
5610 SET_IEEE80211_DEV(hw, &pdev->dev);
5611 pci_set_drvdata(pdev, hw);
5612
5613 priv = hw->priv;
5614 priv->hw = hw;
5615 priv->pdev = pdev;
5616 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5617
5618
5619 priv->sram = pci_iomap(pdev, 0, 0x10000);
5620 if (priv->sram == NULL) {
5621 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5622 goto err_iounmap;
5623 }
5624
5625 /*
5626 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5627 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5628 */
5629 priv->regs = pci_iomap(pdev, 1, 0x10000);
5630 if (priv->regs == NULL) {
5631 priv->regs = pci_iomap(pdev, 2, 0x10000);
5632 if (priv->regs == NULL) {
5633 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5634 goto err_iounmap;
5635 }
5636 }
5637
5638 /*
5639 * Choose the initial fw image depending on user input. If a second
5640 * image is available, make it the alternative image that will be
5641 * loaded if the first one fails.
5642 */
5643 init_completion(&priv->firmware_loading_complete);
5644 di = priv->device_info;
5645 if (ap_mode_default && di->fw_image_ap) {
5646 priv->fw_pref = di->fw_image_ap;
5647 priv->fw_alt = di->fw_image_sta;
5648 } else if (!ap_mode_default && di->fw_image_sta) {
5649 priv->fw_pref = di->fw_image_sta;
5650 priv->fw_alt = di->fw_image_ap;
5651 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5652 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5653 priv->fw_pref = di->fw_image_sta;
5654 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5655 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5656 priv->fw_pref = di->fw_image_ap;
5657 }
5658 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5659 if (rc)
5660 goto err_stop_firmware;
5661 return rc;
5662
5663 err_stop_firmware:
5664 mwl8k_hw_reset(priv);
5665
5666 err_iounmap:
5667 if (priv->regs != NULL)
5668 pci_iounmap(pdev, priv->regs);
5669
5670 if (priv->sram != NULL)
5671 pci_iounmap(pdev, priv->sram);
5672
5673 pci_set_drvdata(pdev, NULL);
5674 ieee80211_free_hw(hw);
5675
5676 err_free_reg:
5677 pci_release_regions(pdev);
5678
5679 err_disable_device:
5680 pci_disable_device(pdev);
5681
5682 return rc;
5683 }
5684
5685 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5686 {
5687 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5688 }
5689
5690 static void __devexit mwl8k_remove(struct pci_dev *pdev)
5691 {
5692 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5693 struct mwl8k_priv *priv;
5694 int i;
5695
5696 if (hw == NULL)
5697 return;
5698 priv = hw->priv;
5699
5700 wait_for_completion(&priv->firmware_loading_complete);
5701
5702 if (priv->fw_state == FW_STATE_ERROR) {
5703 mwl8k_hw_reset(priv);
5704 goto unmap;
5705 }
5706
5707 ieee80211_stop_queues(hw);
5708
5709 ieee80211_unregister_hw(hw);
5710
5711 /* Remove TX reclaim and RX tasklets. */
5712 tasklet_kill(&priv->poll_tx_task);
5713 tasklet_kill(&priv->poll_rx_task);
5714
5715 /* Stop hardware */
5716 mwl8k_hw_reset(priv);
5717
5718 /* Return all skbs to mac80211 */
5719 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5720 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5721
5722 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5723 mwl8k_txq_deinit(hw, i);
5724
5725 mwl8k_rxq_deinit(hw, 0);
5726
5727 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5728
5729 unmap:
5730 pci_iounmap(pdev, priv->regs);
5731 pci_iounmap(pdev, priv->sram);
5732 pci_set_drvdata(pdev, NULL);
5733 ieee80211_free_hw(hw);
5734 pci_release_regions(pdev);
5735 pci_disable_device(pdev);
5736 }
5737
5738 static struct pci_driver mwl8k_driver = {
5739 .name = MWL8K_NAME,
5740 .id_table = mwl8k_pci_id_table,
5741 .probe = mwl8k_probe,
5742 .remove = __devexit_p(mwl8k_remove),
5743 .shutdown = __devexit_p(mwl8k_shutdown),
5744 };
5745
5746 static int __init mwl8k_init(void)
5747 {
5748 return pci_register_driver(&mwl8k_driver);
5749 }
5750
5751 static void __exit mwl8k_exit(void)
5752 {
5753 pci_unregister_driver(&mwl8k_driver);
5754 }
5755
5756 module_init(mwl8k_init);
5757 module_exit(mwl8k_exit);
5758
5759 MODULE_DESCRIPTION(MWL8K_DESC);
5760 MODULE_VERSION(MWL8K_VERSION);
5761 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5762 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree