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mac80211: allow drivers to set default uAPSD parameters
[deliverable/linux.git] / drivers / net / wireless / mwl8k.c
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CommitLineData
1/*
2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
4 *
5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12#include <linux/init.h>
13#include <linux/interrupt.h>
14#include <linux/module.h>
15#include <linux/kernel.h>
16#include <linux/sched.h>
17#include <linux/spinlock.h>
18#include <linux/list.h>
19#include <linux/pci.h>
20#include <linux/delay.h>
21#include <linux/completion.h>
22#include <linux/etherdevice.h>
23#include <linux/slab.h>
24#include <net/mac80211.h>
25#include <linux/moduleparam.h>
26#include <linux/firmware.h>
27#include <linux/workqueue.h>
28
29#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
30#define MWL8K_NAME KBUILD_MODNAME
31#define MWL8K_VERSION "0.13"
32
33/* Module parameters */
34static bool ap_mode_default;
35module_param(ap_mode_default, bool, 0);
36MODULE_PARM_DESC(ap_mode_default,
37 "Set to 1 to make ap mode the default instead of sta mode");
38
39/* Register definitions */
40#define MWL8K_HIU_GEN_PTR 0x00000c10
41#define MWL8K_MODE_STA 0x0000005a
42#define MWL8K_MODE_AP 0x000000a5
43#define MWL8K_HIU_INT_CODE 0x00000c14
44#define MWL8K_FWSTA_READY 0xf0f1f2f4
45#define MWL8K_FWAP_READY 0xf1f2f4a5
46#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
47#define MWL8K_HIU_SCRATCH 0x00000c40
48
49/* Host->device communications */
50#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
51#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
52#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
53#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
54#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
55#define MWL8K_H2A_INT_DUMMY (1 << 20)
56#define MWL8K_H2A_INT_RESET (1 << 15)
57#define MWL8K_H2A_INT_DOORBELL (1 << 1)
58#define MWL8K_H2A_INT_PPA_READY (1 << 0)
59
60/* Device->host communications */
61#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
62#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
63#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
64#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
65#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
66#define MWL8K_A2H_INT_DUMMY (1 << 20)
67#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
68#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
69#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
70#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
71#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
72#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
73#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
74#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
75#define MWL8K_A2H_INT_RX_READY (1 << 1)
76#define MWL8K_A2H_INT_TX_DONE (1 << 0)
77
78/* HW micro second timer register
79 * located at offset 0xA600. This
80 * will be used to timestamp tx
81 * packets.
82 */
83
84#define MWL8K_HW_TIMER_REGISTER 0x0000a600
85
86#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
87 MWL8K_A2H_INT_CHNL_SWITCHED | \
88 MWL8K_A2H_INT_QUEUE_EMPTY | \
89 MWL8K_A2H_INT_RADAR_DETECT | \
90 MWL8K_A2H_INT_RADIO_ON | \
91 MWL8K_A2H_INT_RADIO_OFF | \
92 MWL8K_A2H_INT_MAC_EVENT | \
93 MWL8K_A2H_INT_OPC_DONE | \
94 MWL8K_A2H_INT_RX_READY | \
95 MWL8K_A2H_INT_TX_DONE | \
96 MWL8K_A2H_INT_BA_WATCHDOG)
97
98#define MWL8K_RX_QUEUES 1
99#define MWL8K_TX_WMM_QUEUES 4
100#define MWL8K_MAX_AMPDU_QUEUES 8
101#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
102#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
103
104/* txpriorities are mapped with hw queues.
105 * Each hw queue has a txpriority.
106 */
107#define TOTAL_HW_TX_QUEUES 8
108
109/* Each HW queue can have one AMPDU stream.
110 * But, because one of the hw queue is reserved,
111 * maximum AMPDU queues that can be created are
112 * one short of total tx queues.
113 */
114#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
115
116struct rxd_ops {
117 int rxd_size;
118 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
119 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
120 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
121 __le16 *qos, s8 *noise);
122};
123
124struct mwl8k_device_info {
125 char *part_name;
126 char *helper_image;
127 char *fw_image_sta;
128 char *fw_image_ap;
129 struct rxd_ops *ap_rxd_ops;
130 u32 fw_api_ap;
131};
132
133struct mwl8k_rx_queue {
134 int rxd_count;
135
136 /* hw receives here */
137 int head;
138
139 /* refill descs here */
140 int tail;
141
142 void *rxd;
143 dma_addr_t rxd_dma;
144 struct {
145 struct sk_buff *skb;
146 DEFINE_DMA_UNMAP_ADDR(dma);
147 } *buf;
148};
149
150struct mwl8k_tx_queue {
151 /* hw transmits here */
152 int head;
153
154 /* sw appends here */
155 int tail;
156
157 unsigned int len;
158 struct mwl8k_tx_desc *txd;
159 dma_addr_t txd_dma;
160 struct sk_buff **skb;
161};
162
163enum {
164 AMPDU_NO_STREAM,
165 AMPDU_STREAM_NEW,
166 AMPDU_STREAM_IN_PROGRESS,
167 AMPDU_STREAM_ACTIVE,
168};
169
170struct mwl8k_ampdu_stream {
171 struct ieee80211_sta *sta;
172 u8 tid;
173 u8 state;
174 u8 idx;
175};
176
177struct mwl8k_priv {
178 struct ieee80211_hw *hw;
179 struct pci_dev *pdev;
180 int irq;
181
182 struct mwl8k_device_info *device_info;
183
184 void __iomem *sram;
185 void __iomem *regs;
186
187 /* firmware */
188 const struct firmware *fw_helper;
189 const struct firmware *fw_ucode;
190
191 /* hardware/firmware parameters */
192 bool ap_fw;
193 struct rxd_ops *rxd_ops;
194 struct ieee80211_supported_band band_24;
195 struct ieee80211_channel channels_24[14];
196 struct ieee80211_rate rates_24[14];
197 struct ieee80211_supported_band band_50;
198 struct ieee80211_channel channels_50[4];
199 struct ieee80211_rate rates_50[9];
200 u32 ap_macids_supported;
201 u32 sta_macids_supported;
202
203 /* Ampdu stream information */
204 u8 num_ampdu_queues;
205 spinlock_t stream_lock;
206 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
207 struct work_struct watchdog_ba_handle;
208
209 /* firmware access */
210 struct mutex fw_mutex;
211 struct task_struct *fw_mutex_owner;
212 struct task_struct *hw_restart_owner;
213 int fw_mutex_depth;
214 struct completion *hostcmd_wait;
215
216 atomic_t watchdog_event_pending;
217
218 /* lock held over TX and TX reap */
219 spinlock_t tx_lock;
220
221 /* TX quiesce completion, protected by fw_mutex and tx_lock */
222 struct completion *tx_wait;
223
224 /* List of interfaces. */
225 u32 macids_used;
226 struct list_head vif_list;
227
228 /* power management status cookie from firmware */
229 u32 *cookie;
230 dma_addr_t cookie_dma;
231
232 u16 num_mcaddrs;
233 u8 hw_rev;
234 u32 fw_rev;
235
236 /*
237 * Running count of TX packets in flight, to avoid
238 * iterating over the transmit rings each time.
239 */
240 int pending_tx_pkts;
241
242 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
243 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
244 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
245
246 bool radio_on;
247 bool radio_short_preamble;
248 bool sniffer_enabled;
249 bool wmm_enabled;
250
251 /* XXX need to convert this to handle multiple interfaces */
252 bool capture_beacon;
253 u8 capture_bssid[ETH_ALEN];
254 struct sk_buff *beacon_skb;
255
256 /*
257 * This FJ worker has to be global as it is scheduled from the
258 * RX handler. At this point we don't know which interface it
259 * belongs to until the list of bssids waiting to complete join
260 * is checked.
261 */
262 struct work_struct finalize_join_worker;
263
264 /* Tasklet to perform TX reclaim. */
265 struct tasklet_struct poll_tx_task;
266
267 /* Tasklet to perform RX. */
268 struct tasklet_struct poll_rx_task;
269
270 /* Most recently reported noise in dBm */
271 s8 noise;
272
273 /*
274 * preserve the queue configurations so they can be restored if/when
275 * the firmware image is swapped.
276 */
277 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
278
279 /* To perform the task of reloading the firmware */
280 struct work_struct fw_reload;
281 bool hw_restart_in_progress;
282
283 /* async firmware loading state */
284 unsigned fw_state;
285 char *fw_pref;
286 char *fw_alt;
287 struct completion firmware_loading_complete;
288
289 /* bitmap of running BSSes */
290 u32 running_bsses;
291};
292
293#define MAX_WEP_KEY_LEN 13
294#define NUM_WEP_KEYS 4
295
296/* Per interface specific private data */
297struct mwl8k_vif {
298 struct list_head list;
299 struct ieee80211_vif *vif;
300
301 /* Firmware macid for this vif. */
302 int macid;
303
304 /* Non AMPDU sequence number assigned by driver. */
305 u16 seqno;
306
307 /* Saved WEP keys */
308 struct {
309 u8 enabled;
310 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
311 } wep_key_conf[NUM_WEP_KEYS];
312
313 /* BSSID */
314 u8 bssid[ETH_ALEN];
315
316 /* A flag to indicate is HW crypto is enabled for this bssid */
317 bool is_hw_crypto_enabled;
318};
319#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
320#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
321
322struct tx_traffic_info {
323 u32 start_time;
324 u32 pkts;
325};
326
327#define MWL8K_MAX_TID 8
328struct mwl8k_sta {
329 /* Index into station database. Returned by UPDATE_STADB. */
330 u8 peer_id;
331 u8 is_ampdu_allowed;
332 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
333};
334#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
335
336static const struct ieee80211_channel mwl8k_channels_24[] = {
337 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
338 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
339 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
340 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
341 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
342 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
343 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
344 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
345 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
346 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
347 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
348 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
349 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
350 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
351};
352
353static const struct ieee80211_rate mwl8k_rates_24[] = {
354 { .bitrate = 10, .hw_value = 2, },
355 { .bitrate = 20, .hw_value = 4, },
356 { .bitrate = 55, .hw_value = 11, },
357 { .bitrate = 110, .hw_value = 22, },
358 { .bitrate = 220, .hw_value = 44, },
359 { .bitrate = 60, .hw_value = 12, },
360 { .bitrate = 90, .hw_value = 18, },
361 { .bitrate = 120, .hw_value = 24, },
362 { .bitrate = 180, .hw_value = 36, },
363 { .bitrate = 240, .hw_value = 48, },
364 { .bitrate = 360, .hw_value = 72, },
365 { .bitrate = 480, .hw_value = 96, },
366 { .bitrate = 540, .hw_value = 108, },
367 { .bitrate = 720, .hw_value = 144, },
368};
369
370static const struct ieee80211_channel mwl8k_channels_50[] = {
371 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
372 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
373 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
374 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
375};
376
377static const struct ieee80211_rate mwl8k_rates_50[] = {
378 { .bitrate = 60, .hw_value = 12, },
379 { .bitrate = 90, .hw_value = 18, },
380 { .bitrate = 120, .hw_value = 24, },
381 { .bitrate = 180, .hw_value = 36, },
382 { .bitrate = 240, .hw_value = 48, },
383 { .bitrate = 360, .hw_value = 72, },
384 { .bitrate = 480, .hw_value = 96, },
385 { .bitrate = 540, .hw_value = 108, },
386 { .bitrate = 720, .hw_value = 144, },
387};
388
389/* Set or get info from Firmware */
390#define MWL8K_CMD_GET 0x0000
391#define MWL8K_CMD_SET 0x0001
392#define MWL8K_CMD_SET_LIST 0x0002
393
394/* Firmware command codes */
395#define MWL8K_CMD_CODE_DNLD 0x0001
396#define MWL8K_CMD_GET_HW_SPEC 0x0003
397#define MWL8K_CMD_SET_HW_SPEC 0x0004
398#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
399#define MWL8K_CMD_GET_STAT 0x0014
400#define MWL8K_CMD_RADIO_CONTROL 0x001c
401#define MWL8K_CMD_RF_TX_POWER 0x001e
402#define MWL8K_CMD_TX_POWER 0x001f
403#define MWL8K_CMD_RF_ANTENNA 0x0020
404#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
405#define MWL8K_CMD_SET_PRE_SCAN 0x0107
406#define MWL8K_CMD_SET_POST_SCAN 0x0108
407#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
408#define MWL8K_CMD_SET_AID 0x010d
409#define MWL8K_CMD_SET_RATE 0x0110
410#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
411#define MWL8K_CMD_RTS_THRESHOLD 0x0113
412#define MWL8K_CMD_SET_SLOT 0x0114
413#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
414#define MWL8K_CMD_SET_WMM_MODE 0x0123
415#define MWL8K_CMD_MIMO_CONFIG 0x0125
416#define MWL8K_CMD_USE_FIXED_RATE 0x0126
417#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
418#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
419#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
420#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
421#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
422#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
423#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
424#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
425#define MWL8K_CMD_UPDATE_STADB 0x1123
426#define MWL8K_CMD_BASTREAM 0x1125
427
428static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
429{
430 u16 command = le16_to_cpu(cmd);
431
432#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
433 snprintf(buf, bufsize, "%s", #x);\
434 return buf;\
435 } while (0)
436 switch (command & ~0x8000) {
437 MWL8K_CMDNAME(CODE_DNLD);
438 MWL8K_CMDNAME(GET_HW_SPEC);
439 MWL8K_CMDNAME(SET_HW_SPEC);
440 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
441 MWL8K_CMDNAME(GET_STAT);
442 MWL8K_CMDNAME(RADIO_CONTROL);
443 MWL8K_CMDNAME(RF_TX_POWER);
444 MWL8K_CMDNAME(TX_POWER);
445 MWL8K_CMDNAME(RF_ANTENNA);
446 MWL8K_CMDNAME(SET_BEACON);
447 MWL8K_CMDNAME(SET_PRE_SCAN);
448 MWL8K_CMDNAME(SET_POST_SCAN);
449 MWL8K_CMDNAME(SET_RF_CHANNEL);
450 MWL8K_CMDNAME(SET_AID);
451 MWL8K_CMDNAME(SET_RATE);
452 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
453 MWL8K_CMDNAME(RTS_THRESHOLD);
454 MWL8K_CMDNAME(SET_SLOT);
455 MWL8K_CMDNAME(SET_EDCA_PARAMS);
456 MWL8K_CMDNAME(SET_WMM_MODE);
457 MWL8K_CMDNAME(MIMO_CONFIG);
458 MWL8K_CMDNAME(USE_FIXED_RATE);
459 MWL8K_CMDNAME(ENABLE_SNIFFER);
460 MWL8K_CMDNAME(SET_MAC_ADDR);
461 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
462 MWL8K_CMDNAME(BSS_START);
463 MWL8K_CMDNAME(SET_NEW_STN);
464 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
465 MWL8K_CMDNAME(UPDATE_STADB);
466 MWL8K_CMDNAME(BASTREAM);
467 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
468 default:
469 snprintf(buf, bufsize, "0x%x", cmd);
470 }
471#undef MWL8K_CMDNAME
472
473 return buf;
474}
475
476/* Hardware and firmware reset */
477static void mwl8k_hw_reset(struct mwl8k_priv *priv)
478{
479 iowrite32(MWL8K_H2A_INT_RESET,
480 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
481 iowrite32(MWL8K_H2A_INT_RESET,
482 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
483 msleep(20);
484}
485
486/* Release fw image */
487static void mwl8k_release_fw(const struct firmware **fw)
488{
489 if (*fw == NULL)
490 return;
491 release_firmware(*fw);
492 *fw = NULL;
493}
494
495static void mwl8k_release_firmware(struct mwl8k_priv *priv)
496{
497 mwl8k_release_fw(&priv->fw_ucode);
498 mwl8k_release_fw(&priv->fw_helper);
499}
500
501/* states for asynchronous f/w loading */
502static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
503enum {
504 FW_STATE_INIT = 0,
505 FW_STATE_LOADING_PREF,
506 FW_STATE_LOADING_ALT,
507 FW_STATE_ERROR,
508};
509
510/* Request fw image */
511static int mwl8k_request_fw(struct mwl8k_priv *priv,
512 const char *fname, const struct firmware **fw,
513 bool nowait)
514{
515 /* release current image */
516 if (*fw != NULL)
517 mwl8k_release_fw(fw);
518
519 if (nowait)
520 return request_firmware_nowait(THIS_MODULE, 1, fname,
521 &priv->pdev->dev, GFP_KERNEL,
522 priv, mwl8k_fw_state_machine);
523 else
524 return request_firmware(fw, fname, &priv->pdev->dev);
525}
526
527static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
528 bool nowait)
529{
530 struct mwl8k_device_info *di = priv->device_info;
531 int rc;
532
533 if (di->helper_image != NULL) {
534 if (nowait)
535 rc = mwl8k_request_fw(priv, di->helper_image,
536 &priv->fw_helper, true);
537 else
538 rc = mwl8k_request_fw(priv, di->helper_image,
539 &priv->fw_helper, false);
540 if (rc)
541 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
542 pci_name(priv->pdev), di->helper_image);
543
544 if (rc || nowait)
545 return rc;
546 }
547
548 if (nowait) {
549 /*
550 * if we get here, no helper image is needed. Skip the
551 * FW_STATE_INIT state.
552 */
553 priv->fw_state = FW_STATE_LOADING_PREF;
554 rc = mwl8k_request_fw(priv, fw_image,
555 &priv->fw_ucode,
556 true);
557 } else
558 rc = mwl8k_request_fw(priv, fw_image,
559 &priv->fw_ucode, false);
560 if (rc) {
561 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
562 pci_name(priv->pdev), fw_image);
563 mwl8k_release_fw(&priv->fw_helper);
564 return rc;
565 }
566
567 return 0;
568}
569
570struct mwl8k_cmd_pkt {
571 __le16 code;
572 __le16 length;
573 __u8 seq_num;
574 __u8 macid;
575 __le16 result;
576 char payload[0];
577} __packed;
578
579/*
580 * Firmware loading.
581 */
582static int
583mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
584{
585 void __iomem *regs = priv->regs;
586 dma_addr_t dma_addr;
587 int loops;
588
589 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
590 if (pci_dma_mapping_error(priv->pdev, dma_addr))
591 return -ENOMEM;
592
593 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
594 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
595 iowrite32(MWL8K_H2A_INT_DOORBELL,
596 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
597 iowrite32(MWL8K_H2A_INT_DUMMY,
598 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
599
600 loops = 1000;
601 do {
602 u32 int_code;
603
604 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
605 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
606 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
607 break;
608 }
609
610 cond_resched();
611 udelay(1);
612 } while (--loops);
613
614 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
615
616 return loops ? 0 : -ETIMEDOUT;
617}
618
619static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
620 const u8 *data, size_t length)
621{
622 struct mwl8k_cmd_pkt *cmd;
623 int done;
624 int rc = 0;
625
626 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
627 if (cmd == NULL)
628 return -ENOMEM;
629
630 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
631 cmd->seq_num = 0;
632 cmd->macid = 0;
633 cmd->result = 0;
634
635 done = 0;
636 while (length) {
637 int block_size = length > 256 ? 256 : length;
638
639 memcpy(cmd->payload, data + done, block_size);
640 cmd->length = cpu_to_le16(block_size);
641
642 rc = mwl8k_send_fw_load_cmd(priv, cmd,
643 sizeof(*cmd) + block_size);
644 if (rc)
645 break;
646
647 done += block_size;
648 length -= block_size;
649 }
650
651 if (!rc) {
652 cmd->length = 0;
653 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
654 }
655
656 kfree(cmd);
657
658 return rc;
659}
660
661static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
662 const u8 *data, size_t length)
663{
664 unsigned char *buffer;
665 int may_continue, rc = 0;
666 u32 done, prev_block_size;
667
668 buffer = kmalloc(1024, GFP_KERNEL);
669 if (buffer == NULL)
670 return -ENOMEM;
671
672 done = 0;
673 prev_block_size = 0;
674 may_continue = 1000;
675 while (may_continue > 0) {
676 u32 block_size;
677
678 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
679 if (block_size & 1) {
680 block_size &= ~1;
681 may_continue--;
682 } else {
683 done += prev_block_size;
684 length -= prev_block_size;
685 }
686
687 if (block_size > 1024 || block_size > length) {
688 rc = -EOVERFLOW;
689 break;
690 }
691
692 if (length == 0) {
693 rc = 0;
694 break;
695 }
696
697 if (block_size == 0) {
698 rc = -EPROTO;
699 may_continue--;
700 udelay(1);
701 continue;
702 }
703
704 prev_block_size = block_size;
705 memcpy(buffer, data + done, block_size);
706
707 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
708 if (rc)
709 break;
710 }
711
712 if (!rc && length != 0)
713 rc = -EREMOTEIO;
714
715 kfree(buffer);
716
717 return rc;
718}
719
720static int mwl8k_load_firmware(struct ieee80211_hw *hw)
721{
722 struct mwl8k_priv *priv = hw->priv;
723 const struct firmware *fw = priv->fw_ucode;
724 int rc;
725 int loops;
726
727 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
728 const struct firmware *helper = priv->fw_helper;
729
730 if (helper == NULL) {
731 printk(KERN_ERR "%s: helper image needed but none "
732 "given\n", pci_name(priv->pdev));
733 return -EINVAL;
734 }
735
736 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
737 if (rc) {
738 printk(KERN_ERR "%s: unable to load firmware "
739 "helper image\n", pci_name(priv->pdev));
740 return rc;
741 }
742 msleep(20);
743
744 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
745 } else {
746 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
747 }
748
749 if (rc) {
750 printk(KERN_ERR "%s: unable to load firmware image\n",
751 pci_name(priv->pdev));
752 return rc;
753 }
754
755 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
756
757 loops = 500000;
758 do {
759 u32 ready_code;
760
761 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
762 if (ready_code == MWL8K_FWAP_READY) {
763 priv->ap_fw = true;
764 break;
765 } else if (ready_code == MWL8K_FWSTA_READY) {
766 priv->ap_fw = false;
767 break;
768 }
769
770 cond_resched();
771 udelay(1);
772 } while (--loops);
773
774 return loops ? 0 : -ETIMEDOUT;
775}
776
777
778/* DMA header used by firmware and hardware. */
779struct mwl8k_dma_data {
780 __le16 fwlen;
781 struct ieee80211_hdr wh;
782 char data[0];
783} __packed;
784
785/* Routines to add/remove DMA header from skb. */
786static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
787{
788 struct mwl8k_dma_data *tr;
789 int hdrlen;
790
791 tr = (struct mwl8k_dma_data *)skb->data;
792 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
793
794 if (hdrlen != sizeof(tr->wh)) {
795 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
796 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
797 *((__le16 *)(tr->data - 2)) = qos;
798 } else {
799 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
800 }
801 }
802
803 if (hdrlen != sizeof(*tr))
804 skb_pull(skb, sizeof(*tr) - hdrlen);
805}
806
807#define REDUCED_TX_HEADROOM 8
808
809static void
810mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
811 int head_pad, int tail_pad)
812{
813 struct ieee80211_hdr *wh;
814 int hdrlen;
815 int reqd_hdrlen;
816 struct mwl8k_dma_data *tr;
817
818 /*
819 * Add a firmware DMA header; the firmware requires that we
820 * present a 2-byte payload length followed by a 4-address
821 * header (without QoS field), followed (optionally) by any
822 * WEP/ExtIV header (but only filled in for CCMP).
823 */
824 wh = (struct ieee80211_hdr *)skb->data;
825
826 hdrlen = ieee80211_hdrlen(wh->frame_control);
827
828 /*
829 * Check if skb_resize is required because of
830 * tx_headroom adjustment.
831 */
832 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
833 + REDUCED_TX_HEADROOM))) {
834 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
835
836 wiphy_err(priv->hw->wiphy,
837 "Failed to reallocate TX buffer\n");
838 return;
839 }
840 skb->truesize += REDUCED_TX_HEADROOM;
841 }
842
843 reqd_hdrlen = sizeof(*tr) + head_pad;
844
845 if (hdrlen != reqd_hdrlen)
846 skb_push(skb, reqd_hdrlen - hdrlen);
847
848 if (ieee80211_is_data_qos(wh->frame_control))
849 hdrlen -= IEEE80211_QOS_CTL_LEN;
850
851 tr = (struct mwl8k_dma_data *)skb->data;
852 if (wh != &tr->wh)
853 memmove(&tr->wh, wh, hdrlen);
854 if (hdrlen != sizeof(tr->wh))
855 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
856
857 /*
858 * Firmware length is the length of the fully formed "802.11
859 * payload". That is, everything except for the 802.11 header.
860 * This includes all crypto material including the MIC.
861 */
862 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
863}
864
865static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
866 struct sk_buff *skb)
867{
868 struct ieee80211_hdr *wh;
869 struct ieee80211_tx_info *tx_info;
870 struct ieee80211_key_conf *key_conf;
871 int data_pad;
872 int head_pad = 0;
873
874 wh = (struct ieee80211_hdr *)skb->data;
875
876 tx_info = IEEE80211_SKB_CB(skb);
877
878 key_conf = NULL;
879 if (ieee80211_is_data(wh->frame_control))
880 key_conf = tx_info->control.hw_key;
881
882 /*
883 * Make sure the packet header is in the DMA header format (4-address
884 * without QoS), and add head & tail padding when HW crypto is enabled.
885 *
886 * We have the following trailer padding requirements:
887 * - WEP: 4 trailer bytes (ICV)
888 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
889 * - CCMP: 8 trailer bytes (MIC)
890 */
891 data_pad = 0;
892 if (key_conf != NULL) {
893 head_pad = key_conf->iv_len;
894 switch (key_conf->cipher) {
895 case WLAN_CIPHER_SUITE_WEP40:
896 case WLAN_CIPHER_SUITE_WEP104:
897 data_pad = 4;
898 break;
899 case WLAN_CIPHER_SUITE_TKIP:
900 data_pad = 12;
901 break;
902 case WLAN_CIPHER_SUITE_CCMP:
903 data_pad = 8;
904 break;
905 }
906 }
907 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
908}
909
910/*
911 * Packet reception for 88w8366 AP firmware.
912 */
913struct mwl8k_rxd_8366_ap {
914 __le16 pkt_len;
915 __u8 sq2;
916 __u8 rate;
917 __le32 pkt_phys_addr;
918 __le32 next_rxd_phys_addr;
919 __le16 qos_control;
920 __le16 htsig2;
921 __le32 hw_rssi_info;
922 __le32 hw_noise_floor_info;
923 __u8 noise_floor;
924 __u8 pad0[3];
925 __u8 rssi;
926 __u8 rx_status;
927 __u8 channel;
928 __u8 rx_ctrl;
929} __packed;
930
931#define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
932#define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
933#define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
934
935#define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
936
937/* 8366 AP rx_status bits */
938#define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
939#define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
940#define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
941#define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
942#define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
943
944static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
945{
946 struct mwl8k_rxd_8366_ap *rxd = _rxd;
947
948 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
949 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
950}
951
952static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
953{
954 struct mwl8k_rxd_8366_ap *rxd = _rxd;
955
956 rxd->pkt_len = cpu_to_le16(len);
957 rxd->pkt_phys_addr = cpu_to_le32(addr);
958 wmb();
959 rxd->rx_ctrl = 0;
960}
961
962static int
963mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
964 __le16 *qos, s8 *noise)
965{
966 struct mwl8k_rxd_8366_ap *rxd = _rxd;
967
968 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
969 return -1;
970 rmb();
971
972 memset(status, 0, sizeof(*status));
973
974 status->signal = -rxd->rssi;
975 *noise = -rxd->noise_floor;
976
977 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
978 status->flag |= RX_FLAG_HT;
979 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
980 status->flag |= RX_FLAG_40MHZ;
981 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
982 } else {
983 int i;
984
985 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
986 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
987 status->rate_idx = i;
988 break;
989 }
990 }
991 }
992
993 if (rxd->channel > 14) {
994 status->band = IEEE80211_BAND_5GHZ;
995 if (!(status->flag & RX_FLAG_HT))
996 status->rate_idx -= 5;
997 } else {
998 status->band = IEEE80211_BAND_2GHZ;
999 }
1000 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1001 status->band);
1002
1003 *qos = rxd->qos_control;
1004
1005 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1006 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1007 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1008 status->flag |= RX_FLAG_MMIC_ERROR;
1009
1010 return le16_to_cpu(rxd->pkt_len);
1011}
1012
1013static struct rxd_ops rxd_8366_ap_ops = {
1014 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
1015 .rxd_init = mwl8k_rxd_8366_ap_init,
1016 .rxd_refill = mwl8k_rxd_8366_ap_refill,
1017 .rxd_process = mwl8k_rxd_8366_ap_process,
1018};
1019
1020/*
1021 * Packet reception for STA firmware.
1022 */
1023struct mwl8k_rxd_sta {
1024 __le16 pkt_len;
1025 __u8 link_quality;
1026 __u8 noise_level;
1027 __le32 pkt_phys_addr;
1028 __le32 next_rxd_phys_addr;
1029 __le16 qos_control;
1030 __le16 rate_info;
1031 __le32 pad0[4];
1032 __u8 rssi;
1033 __u8 channel;
1034 __le16 pad1;
1035 __u8 rx_ctrl;
1036 __u8 rx_status;
1037 __u8 pad2[2];
1038} __packed;
1039
1040#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1041#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1042#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1043#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1044#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1045#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1046
1047#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1048#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1049/* ICV=0 or MIC=1 */
1050#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1051/* Key is uploaded only in failure case */
1052#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1053
1054static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1055{
1056 struct mwl8k_rxd_sta *rxd = _rxd;
1057
1058 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1059 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1060}
1061
1062static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1063{
1064 struct mwl8k_rxd_sta *rxd = _rxd;
1065
1066 rxd->pkt_len = cpu_to_le16(len);
1067 rxd->pkt_phys_addr = cpu_to_le32(addr);
1068 wmb();
1069 rxd->rx_ctrl = 0;
1070}
1071
1072static int
1073mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1074 __le16 *qos, s8 *noise)
1075{
1076 struct mwl8k_rxd_sta *rxd = _rxd;
1077 u16 rate_info;
1078
1079 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1080 return -1;
1081 rmb();
1082
1083 rate_info = le16_to_cpu(rxd->rate_info);
1084
1085 memset(status, 0, sizeof(*status));
1086
1087 status->signal = -rxd->rssi;
1088 *noise = -rxd->noise_level;
1089 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1090 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1091
1092 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1093 status->flag |= RX_FLAG_SHORTPRE;
1094 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1095 status->flag |= RX_FLAG_40MHZ;
1096 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1097 status->flag |= RX_FLAG_SHORT_GI;
1098 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1099 status->flag |= RX_FLAG_HT;
1100
1101 if (rxd->channel > 14) {
1102 status->band = IEEE80211_BAND_5GHZ;
1103 if (!(status->flag & RX_FLAG_HT))
1104 status->rate_idx -= 5;
1105 } else {
1106 status->band = IEEE80211_BAND_2GHZ;
1107 }
1108 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1109 status->band);
1110
1111 *qos = rxd->qos_control;
1112 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1113 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1114 status->flag |= RX_FLAG_MMIC_ERROR;
1115
1116 return le16_to_cpu(rxd->pkt_len);
1117}
1118
1119static struct rxd_ops rxd_sta_ops = {
1120 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1121 .rxd_init = mwl8k_rxd_sta_init,
1122 .rxd_refill = mwl8k_rxd_sta_refill,
1123 .rxd_process = mwl8k_rxd_sta_process,
1124};
1125
1126
1127#define MWL8K_RX_DESCS 256
1128#define MWL8K_RX_MAXSZ 3800
1129
1130static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1131{
1132 struct mwl8k_priv *priv = hw->priv;
1133 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1134 int size;
1135 int i;
1136
1137 rxq->rxd_count = 0;
1138 rxq->head = 0;
1139 rxq->tail = 0;
1140
1141 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1142
1143 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1144 if (rxq->rxd == NULL) {
1145 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1146 return -ENOMEM;
1147 }
1148 memset(rxq->rxd, 0, size);
1149
1150 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1151 if (rxq->buf == NULL) {
1152 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1153 return -ENOMEM;
1154 }
1155
1156 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1157 int desc_size;
1158 void *rxd;
1159 int nexti;
1160 dma_addr_t next_dma_addr;
1161
1162 desc_size = priv->rxd_ops->rxd_size;
1163 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1164
1165 nexti = i + 1;
1166 if (nexti == MWL8K_RX_DESCS)
1167 nexti = 0;
1168 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1169
1170 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1171 }
1172
1173 return 0;
1174}
1175
1176static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1177{
1178 struct mwl8k_priv *priv = hw->priv;
1179 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1180 int refilled;
1181
1182 refilled = 0;
1183 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1184 struct sk_buff *skb;
1185 dma_addr_t addr;
1186 int rx;
1187 void *rxd;
1188
1189 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1190 if (skb == NULL)
1191 break;
1192
1193 addr = pci_map_single(priv->pdev, skb->data,
1194 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1195
1196 rxq->rxd_count++;
1197 rx = rxq->tail++;
1198 if (rxq->tail == MWL8K_RX_DESCS)
1199 rxq->tail = 0;
1200 rxq->buf[rx].skb = skb;
1201 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1202
1203 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1204 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1205
1206 refilled++;
1207 }
1208
1209 return refilled;
1210}
1211
1212/* Must be called only when the card's reception is completely halted */
1213static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1214{
1215 struct mwl8k_priv *priv = hw->priv;
1216 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1217 int i;
1218
1219 if (rxq->rxd == NULL)
1220 return;
1221
1222 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1223 if (rxq->buf[i].skb != NULL) {
1224 pci_unmap_single(priv->pdev,
1225 dma_unmap_addr(&rxq->buf[i], dma),
1226 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1227 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1228
1229 kfree_skb(rxq->buf[i].skb);
1230 rxq->buf[i].skb = NULL;
1231 }
1232 }
1233
1234 kfree(rxq->buf);
1235 rxq->buf = NULL;
1236
1237 pci_free_consistent(priv->pdev,
1238 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1239 rxq->rxd, rxq->rxd_dma);
1240 rxq->rxd = NULL;
1241}
1242
1243
1244/*
1245 * Scan a list of BSSIDs to process for finalize join.
1246 * Allows for extension to process multiple BSSIDs.
1247 */
1248static inline int
1249mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1250{
1251 return priv->capture_beacon &&
1252 ieee80211_is_beacon(wh->frame_control) &&
1253 ether_addr_equal(wh->addr3, priv->capture_bssid);
1254}
1255
1256static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1257 struct sk_buff *skb)
1258{
1259 struct mwl8k_priv *priv = hw->priv;
1260
1261 priv->capture_beacon = false;
1262 memset(priv->capture_bssid, 0, ETH_ALEN);
1263
1264 /*
1265 * Use GFP_ATOMIC as rxq_process is called from
1266 * the primary interrupt handler, memory allocation call
1267 * must not sleep.
1268 */
1269 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1270 if (priv->beacon_skb != NULL)
1271 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1272}
1273
1274static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1275 u8 *bssid)
1276{
1277 struct mwl8k_vif *mwl8k_vif;
1278
1279 list_for_each_entry(mwl8k_vif,
1280 vif_list, list) {
1281 if (memcmp(bssid, mwl8k_vif->bssid,
1282 ETH_ALEN) == 0)
1283 return mwl8k_vif;
1284 }
1285
1286 return NULL;
1287}
1288
1289static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1290{
1291 struct mwl8k_priv *priv = hw->priv;
1292 struct mwl8k_vif *mwl8k_vif = NULL;
1293 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1294 int processed;
1295
1296 processed = 0;
1297 while (rxq->rxd_count && limit--) {
1298 struct sk_buff *skb;
1299 void *rxd;
1300 int pkt_len;
1301 struct ieee80211_rx_status status;
1302 struct ieee80211_hdr *wh;
1303 __le16 qos;
1304
1305 skb = rxq->buf[rxq->head].skb;
1306 if (skb == NULL)
1307 break;
1308
1309 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1310
1311 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1312 &priv->noise);
1313 if (pkt_len < 0)
1314 break;
1315
1316 rxq->buf[rxq->head].skb = NULL;
1317
1318 pci_unmap_single(priv->pdev,
1319 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1320 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1321 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1322
1323 rxq->head++;
1324 if (rxq->head == MWL8K_RX_DESCS)
1325 rxq->head = 0;
1326
1327 rxq->rxd_count--;
1328
1329 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1330
1331 /*
1332 * Check for a pending join operation. Save a
1333 * copy of the beacon and schedule a tasklet to
1334 * send a FINALIZE_JOIN command to the firmware.
1335 */
1336 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1337 mwl8k_save_beacon(hw, skb);
1338
1339 if (ieee80211_has_protected(wh->frame_control)) {
1340
1341 /* Check if hw crypto has been enabled for
1342 * this bss. If yes, set the status flags
1343 * accordingly
1344 */
1345 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1346 wh->addr1);
1347
1348 if (mwl8k_vif != NULL &&
1349 mwl8k_vif->is_hw_crypto_enabled) {
1350 /*
1351 * When MMIC ERROR is encountered
1352 * by the firmware, payload is
1353 * dropped and only 32 bytes of
1354 * mwl8k Firmware header is sent
1355 * to the host.
1356 *
1357 * We need to add four bytes of
1358 * key information. In it
1359 * MAC80211 expects keyidx set to
1360 * 0 for triggering Counter
1361 * Measure of MMIC failure.
1362 */
1363 if (status.flag & RX_FLAG_MMIC_ERROR) {
1364 struct mwl8k_dma_data *tr;
1365 tr = (struct mwl8k_dma_data *)skb->data;
1366 memset((void *)&(tr->data), 0, 4);
1367 pkt_len += 4;
1368 }
1369
1370 if (!ieee80211_is_auth(wh->frame_control))
1371 status.flag |= RX_FLAG_IV_STRIPPED |
1372 RX_FLAG_DECRYPTED |
1373 RX_FLAG_MMIC_STRIPPED;
1374 }
1375 }
1376
1377 skb_put(skb, pkt_len);
1378 mwl8k_remove_dma_header(skb, qos);
1379 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1380 ieee80211_rx_irqsafe(hw, skb);
1381
1382 processed++;
1383 }
1384
1385 return processed;
1386}
1387
1388
1389/*
1390 * Packet transmission.
1391 */
1392
1393#define MWL8K_TXD_STATUS_OK 0x00000001
1394#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1395#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1396#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1397#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1398
1399#define MWL8K_QOS_QLEN_UNSPEC 0xff00
1400#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1401#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1402#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1403#define MWL8K_QOS_EOSP 0x0010
1404
1405struct mwl8k_tx_desc {
1406 __le32 status;
1407 __u8 data_rate;
1408 __u8 tx_priority;
1409 __le16 qos_control;
1410 __le32 pkt_phys_addr;
1411 __le16 pkt_len;
1412 __u8 dest_MAC_addr[ETH_ALEN];
1413 __le32 next_txd_phys_addr;
1414 __le32 timestamp;
1415 __le16 rate_info;
1416 __u8 peer_id;
1417 __u8 tx_frag_cnt;
1418} __packed;
1419
1420#define MWL8K_TX_DESCS 128
1421
1422static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1423{
1424 struct mwl8k_priv *priv = hw->priv;
1425 struct mwl8k_tx_queue *txq = priv->txq + index;
1426 int size;
1427 int i;
1428
1429 txq->len = 0;
1430 txq->head = 0;
1431 txq->tail = 0;
1432
1433 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1434
1435 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1436 if (txq->txd == NULL) {
1437 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1438 return -ENOMEM;
1439 }
1440 memset(txq->txd, 0, size);
1441
1442 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1443 if (txq->skb == NULL) {
1444 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1445 return -ENOMEM;
1446 }
1447
1448 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1449 struct mwl8k_tx_desc *tx_desc;
1450 int nexti;
1451
1452 tx_desc = txq->txd + i;
1453 nexti = (i + 1) % MWL8K_TX_DESCS;
1454
1455 tx_desc->status = 0;
1456 tx_desc->next_txd_phys_addr =
1457 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1458 }
1459
1460 return 0;
1461}
1462
1463static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1464{
1465 iowrite32(MWL8K_H2A_INT_PPA_READY,
1466 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1467 iowrite32(MWL8K_H2A_INT_DUMMY,
1468 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1469 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1470}
1471
1472static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1473{
1474 struct mwl8k_priv *priv = hw->priv;
1475 int i;
1476
1477 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1478 struct mwl8k_tx_queue *txq = priv->txq + i;
1479 int fw_owned = 0;
1480 int drv_owned = 0;
1481 int unused = 0;
1482 int desc;
1483
1484 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1485 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1486 u32 status;
1487
1488 status = le32_to_cpu(tx_desc->status);
1489 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1490 fw_owned++;
1491 else
1492 drv_owned++;
1493
1494 if (tx_desc->pkt_len == 0)
1495 unused++;
1496 }
1497
1498 wiphy_err(hw->wiphy,
1499 "txq[%d] len=%d head=%d tail=%d "
1500 "fw_owned=%d drv_owned=%d unused=%d\n",
1501 i,
1502 txq->len, txq->head, txq->tail,
1503 fw_owned, drv_owned, unused);
1504 }
1505}
1506
1507/*
1508 * Must be called with priv->fw_mutex held and tx queues stopped.
1509 */
1510#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1511
1512static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1513{
1514 struct mwl8k_priv *priv = hw->priv;
1515 DECLARE_COMPLETION_ONSTACK(tx_wait);
1516 int retry;
1517 int rc;
1518
1519 might_sleep();
1520
1521 /* Since fw restart is in progress, allow only the firmware
1522 * commands from the restart code and block the other
1523 * commands since they are going to fail in any case since
1524 * the firmware has crashed
1525 */
1526 if (priv->hw_restart_in_progress) {
1527 if (priv->hw_restart_owner == current)
1528 return 0;
1529 else
1530 return -EBUSY;
1531 }
1532
1533 if (atomic_read(&priv->watchdog_event_pending))
1534 return 0;
1535
1536 /*
1537 * The TX queues are stopped at this point, so this test
1538 * doesn't need to take ->tx_lock.
1539 */
1540 if (!priv->pending_tx_pkts)
1541 return 0;
1542
1543 retry = 0;
1544 rc = 0;
1545
1546 spin_lock_bh(&priv->tx_lock);
1547 priv->tx_wait = &tx_wait;
1548 while (!rc) {
1549 int oldcount;
1550 unsigned long timeout;
1551
1552 oldcount = priv->pending_tx_pkts;
1553
1554 spin_unlock_bh(&priv->tx_lock);
1555 timeout = wait_for_completion_timeout(&tx_wait,
1556 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1557
1558 if (atomic_read(&priv->watchdog_event_pending)) {
1559 spin_lock_bh(&priv->tx_lock);
1560 priv->tx_wait = NULL;
1561 spin_unlock_bh(&priv->tx_lock);
1562 return 0;
1563 }
1564
1565 spin_lock_bh(&priv->tx_lock);
1566
1567 if (timeout) {
1568 WARN_ON(priv->pending_tx_pkts);
1569 if (retry)
1570 wiphy_notice(hw->wiphy, "tx rings drained\n");
1571 break;
1572 }
1573
1574 if (priv->pending_tx_pkts < oldcount) {
1575 wiphy_notice(hw->wiphy,
1576 "waiting for tx rings to drain (%d -> %d pkts)\n",
1577 oldcount, priv->pending_tx_pkts);
1578 retry = 1;
1579 continue;
1580 }
1581
1582 priv->tx_wait = NULL;
1583
1584 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1585 MWL8K_TX_WAIT_TIMEOUT_MS);
1586 mwl8k_dump_tx_rings(hw);
1587 priv->hw_restart_in_progress = true;
1588 ieee80211_queue_work(hw, &priv->fw_reload);
1589
1590 rc = -ETIMEDOUT;
1591 }
1592 priv->tx_wait = NULL;
1593 spin_unlock_bh(&priv->tx_lock);
1594
1595 return rc;
1596}
1597
1598#define MWL8K_TXD_SUCCESS(status) \
1599 ((status) & (MWL8K_TXD_STATUS_OK | \
1600 MWL8K_TXD_STATUS_OK_RETRY | \
1601 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1602
1603static int mwl8k_tid_queue_mapping(u8 tid)
1604{
1605 BUG_ON(tid > 7);
1606
1607 switch (tid) {
1608 case 0:
1609 case 3:
1610 return IEEE80211_AC_BE;
1611 break;
1612 case 1:
1613 case 2:
1614 return IEEE80211_AC_BK;
1615 break;
1616 case 4:
1617 case 5:
1618 return IEEE80211_AC_VI;
1619 break;
1620 case 6:
1621 case 7:
1622 return IEEE80211_AC_VO;
1623 break;
1624 default:
1625 return -1;
1626 break;
1627 }
1628}
1629
1630/* The firmware will fill in the rate information
1631 * for each packet that gets queued in the hardware
1632 * and these macros will interpret that info.
1633 */
1634
1635#define RI_FORMAT(a) (a & 0x0001)
1636#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1637
1638static int
1639mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1640{
1641 struct mwl8k_priv *priv = hw->priv;
1642 struct mwl8k_tx_queue *txq = priv->txq + index;
1643 int processed;
1644
1645 processed = 0;
1646 while (txq->len > 0 && limit--) {
1647 int tx;
1648 struct mwl8k_tx_desc *tx_desc;
1649 unsigned long addr;
1650 int size;
1651 struct sk_buff *skb;
1652 struct ieee80211_tx_info *info;
1653 u32 status;
1654 struct ieee80211_sta *sta;
1655 struct mwl8k_sta *sta_info = NULL;
1656 u16 rate_info;
1657 struct ieee80211_hdr *wh;
1658
1659 tx = txq->head;
1660 tx_desc = txq->txd + tx;
1661
1662 status = le32_to_cpu(tx_desc->status);
1663
1664 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1665 if (!force)
1666 break;
1667 tx_desc->status &=
1668 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1669 }
1670
1671 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1672 BUG_ON(txq->len == 0);
1673 txq->len--;
1674 priv->pending_tx_pkts--;
1675
1676 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1677 size = le16_to_cpu(tx_desc->pkt_len);
1678 skb = txq->skb[tx];
1679 txq->skb[tx] = NULL;
1680
1681 BUG_ON(skb == NULL);
1682 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1683
1684 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1685
1686 wh = (struct ieee80211_hdr *) skb->data;
1687
1688 /* Mark descriptor as unused */
1689 tx_desc->pkt_phys_addr = 0;
1690 tx_desc->pkt_len = 0;
1691
1692 info = IEEE80211_SKB_CB(skb);
1693 if (ieee80211_is_data(wh->frame_control)) {
1694 rcu_read_lock();
1695 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1696 wh->addr2);
1697 if (sta) {
1698 sta_info = MWL8K_STA(sta);
1699 BUG_ON(sta_info == NULL);
1700 rate_info = le16_to_cpu(tx_desc->rate_info);
1701 /* If rate is < 6.5 Mpbs for an ht station
1702 * do not form an ampdu. If the station is a
1703 * legacy station (format = 0), do not form an
1704 * ampdu
1705 */
1706 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1707 RI_FORMAT(rate_info) == 0) {
1708 sta_info->is_ampdu_allowed = false;
1709 } else {
1710 sta_info->is_ampdu_allowed = true;
1711 }
1712 }
1713 rcu_read_unlock();
1714 }
1715
1716 ieee80211_tx_info_clear_status(info);
1717
1718 /* Rate control is happening in the firmware.
1719 * Ensure no tx rate is being reported.
1720 */
1721 info->status.rates[0].idx = -1;
1722 info->status.rates[0].count = 1;
1723
1724 if (MWL8K_TXD_SUCCESS(status))
1725 info->flags |= IEEE80211_TX_STAT_ACK;
1726
1727 ieee80211_tx_status_irqsafe(hw, skb);
1728
1729 processed++;
1730 }
1731
1732 return processed;
1733}
1734
1735/* must be called only when the card's transmit is completely halted */
1736static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1737{
1738 struct mwl8k_priv *priv = hw->priv;
1739 struct mwl8k_tx_queue *txq = priv->txq + index;
1740
1741 if (txq->txd == NULL)
1742 return;
1743
1744 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1745
1746 kfree(txq->skb);
1747 txq->skb = NULL;
1748
1749 pci_free_consistent(priv->pdev,
1750 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1751 txq->txd, txq->txd_dma);
1752 txq->txd = NULL;
1753}
1754
1755/* caller must hold priv->stream_lock when calling the stream functions */
1756static struct mwl8k_ampdu_stream *
1757mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1758{
1759 struct mwl8k_ampdu_stream *stream;
1760 struct mwl8k_priv *priv = hw->priv;
1761 int i;
1762
1763 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1764 stream = &priv->ampdu[i];
1765 if (stream->state == AMPDU_NO_STREAM) {
1766 stream->sta = sta;
1767 stream->state = AMPDU_STREAM_NEW;
1768 stream->tid = tid;
1769 stream->idx = i;
1770 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1771 sta->addr, tid);
1772 return stream;
1773 }
1774 }
1775 return NULL;
1776}
1777
1778static int
1779mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1780{
1781 int ret;
1782
1783 /* if the stream has already been started, don't start it again */
1784 if (stream->state != AMPDU_STREAM_NEW)
1785 return 0;
1786 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1787 if (ret)
1788 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1789 "%d\n", stream->sta->addr, stream->tid, ret);
1790 else
1791 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1792 stream->sta->addr, stream->tid);
1793 return ret;
1794}
1795
1796static void
1797mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1798{
1799 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1800 stream->tid);
1801 memset(stream, 0, sizeof(*stream));
1802}
1803
1804static struct mwl8k_ampdu_stream *
1805mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1806{
1807 struct mwl8k_priv *priv = hw->priv;
1808 int i;
1809
1810 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1811 struct mwl8k_ampdu_stream *stream;
1812 stream = &priv->ampdu[i];
1813 if (stream->state == AMPDU_NO_STREAM)
1814 continue;
1815 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1816 stream->tid == tid)
1817 return stream;
1818 }
1819 return NULL;
1820}
1821
1822#define MWL8K_AMPDU_PACKET_THRESHOLD 64
1823static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1824{
1825 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1826 struct tx_traffic_info *tx_stats;
1827
1828 BUG_ON(tid >= MWL8K_MAX_TID);
1829 tx_stats = &sta_info->tx_stats[tid];
1830
1831 return sta_info->is_ampdu_allowed &&
1832 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1833}
1834
1835static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1836{
1837 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1838 struct tx_traffic_info *tx_stats;
1839
1840 BUG_ON(tid >= MWL8K_MAX_TID);
1841 tx_stats = &sta_info->tx_stats[tid];
1842
1843 if (tx_stats->start_time == 0)
1844 tx_stats->start_time = jiffies;
1845
1846 /* reset the packet count after each second elapses. If the number of
1847 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1848 * an ampdu stream to be started.
1849 */
1850 if (jiffies - tx_stats->start_time > HZ) {
1851 tx_stats->pkts = 0;
1852 tx_stats->start_time = 0;
1853 } else
1854 tx_stats->pkts++;
1855}
1856
1857/* The hardware ampdu queues start from 5.
1858 * txpriorities for ampdu queues are
1859 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1860 * and queue 3 is lowest (queue 4 is reserved)
1861 */
1862#define BA_QUEUE 5
1863
1864static void
1865mwl8k_txq_xmit(struct ieee80211_hw *hw,
1866 int index,
1867 struct ieee80211_sta *sta,
1868 struct sk_buff *skb)
1869{
1870 struct mwl8k_priv *priv = hw->priv;
1871 struct ieee80211_tx_info *tx_info;
1872 struct mwl8k_vif *mwl8k_vif;
1873 struct ieee80211_hdr *wh;
1874 struct mwl8k_tx_queue *txq;
1875 struct mwl8k_tx_desc *tx;
1876 dma_addr_t dma;
1877 u32 txstatus;
1878 u8 txdatarate;
1879 u16 qos;
1880 int txpriority;
1881 u8 tid = 0;
1882 struct mwl8k_ampdu_stream *stream = NULL;
1883 bool start_ba_session = false;
1884 bool mgmtframe = false;
1885 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1886 bool eapol_frame = false;
1887
1888 wh = (struct ieee80211_hdr *)skb->data;
1889 if (ieee80211_is_data_qos(wh->frame_control))
1890 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1891 else
1892 qos = 0;
1893
1894 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1895 eapol_frame = true;
1896
1897 if (ieee80211_is_mgmt(wh->frame_control))
1898 mgmtframe = true;
1899
1900 if (priv->ap_fw)
1901 mwl8k_encapsulate_tx_frame(priv, skb);
1902 else
1903 mwl8k_add_dma_header(priv, skb, 0, 0);
1904
1905 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1906
1907 tx_info = IEEE80211_SKB_CB(skb);
1908 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1909
1910 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1911 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1912 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1913 mwl8k_vif->seqno += 0x10;
1914 }
1915
1916 /* Setup firmware control bit fields for each frame type. */
1917 txstatus = 0;
1918 txdatarate = 0;
1919 if (ieee80211_is_mgmt(wh->frame_control) ||
1920 ieee80211_is_ctl(wh->frame_control)) {
1921 txdatarate = 0;
1922 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1923 } else if (ieee80211_is_data(wh->frame_control)) {
1924 txdatarate = 1;
1925 if (is_multicast_ether_addr(wh->addr1))
1926 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1927
1928 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1929 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1930 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1931 else
1932 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1933 }
1934
1935 /* Queue ADDBA request in the respective data queue. While setting up
1936 * the ampdu stream, mac80211 queues further packets for that
1937 * particular ra/tid pair. However, packets piled up in the hardware
1938 * for that ra/tid pair will still go out. ADDBA request and the
1939 * related data packets going out from different queues asynchronously
1940 * will cause a shift in the receiver window which might result in
1941 * ampdu packets getting dropped at the receiver after the stream has
1942 * been setup.
1943 */
1944 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1945 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1946 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1947 priv->ap_fw)) {
1948 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1949 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1950 index = mwl8k_tid_queue_mapping(tid);
1951 }
1952
1953 txpriority = index;
1954
1955 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1956 ieee80211_is_data_qos(wh->frame_control)) {
1957 tid = qos & 0xf;
1958 mwl8k_tx_count_packet(sta, tid);
1959 spin_lock(&priv->stream_lock);
1960 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1961 if (stream != NULL) {
1962 if (stream->state == AMPDU_STREAM_ACTIVE) {
1963 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1964 txpriority = (BA_QUEUE + stream->idx) %
1965 TOTAL_HW_TX_QUEUES;
1966 if (stream->idx <= 1)
1967 index = stream->idx +
1968 MWL8K_TX_WMM_QUEUES;
1969
1970 } else if (stream->state == AMPDU_STREAM_NEW) {
1971 /* We get here if the driver sends us packets
1972 * after we've initiated a stream, but before
1973 * our ampdu_action routine has been called
1974 * with IEEE80211_AMPDU_TX_START to get the SSN
1975 * for the ADDBA request. So this packet can
1976 * go out with no risk of sequence number
1977 * mismatch. No special handling is required.
1978 */
1979 } else {
1980 /* Drop packets that would go out after the
1981 * ADDBA request was sent but before the ADDBA
1982 * response is received. If we don't do this,
1983 * the recipient would probably receive it
1984 * after the ADDBA request with SSN 0. This
1985 * will cause the recipient's BA receive window
1986 * to shift, which would cause the subsequent
1987 * packets in the BA stream to be discarded.
1988 * mac80211 queues our packets for us in this
1989 * case, so this is really just a safety check.
1990 */
1991 wiphy_warn(hw->wiphy,
1992 "Cannot send packet while ADDBA "
1993 "dialog is underway.\n");
1994 spin_unlock(&priv->stream_lock);
1995 dev_kfree_skb(skb);
1996 return;
1997 }
1998 } else {
1999 /* Defer calling mwl8k_start_stream so that the current
2000 * skb can go out before the ADDBA request. This
2001 * prevents sequence number mismatch at the recepient
2002 * as described above.
2003 */
2004 if (mwl8k_ampdu_allowed(sta, tid)) {
2005 stream = mwl8k_add_stream(hw, sta, tid);
2006 if (stream != NULL)
2007 start_ba_session = true;
2008 }
2009 }
2010 spin_unlock(&priv->stream_lock);
2011 } else {
2012 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2013 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2014 }
2015
2016 dma = pci_map_single(priv->pdev, skb->data,
2017 skb->len, PCI_DMA_TODEVICE);
2018
2019 if (pci_dma_mapping_error(priv->pdev, dma)) {
2020 wiphy_debug(hw->wiphy,
2021 "failed to dma map skb, dropping TX frame.\n");
2022 if (start_ba_session) {
2023 spin_lock(&priv->stream_lock);
2024 mwl8k_remove_stream(hw, stream);
2025 spin_unlock(&priv->stream_lock);
2026 }
2027 dev_kfree_skb(skb);
2028 return;
2029 }
2030
2031 spin_lock_bh(&priv->tx_lock);
2032
2033 txq = priv->txq + index;
2034
2035 /* Mgmt frames that go out frequently are probe
2036 * responses. Other mgmt frames got out relatively
2037 * infrequently. Hence reserve 2 buffers so that
2038 * other mgmt frames do not get dropped due to an
2039 * already queued probe response in one of the
2040 * reserved buffers.
2041 */
2042
2043 if (txq->len >= MWL8K_TX_DESCS - 2) {
2044 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2045 if (start_ba_session) {
2046 spin_lock(&priv->stream_lock);
2047 mwl8k_remove_stream(hw, stream);
2048 spin_unlock(&priv->stream_lock);
2049 }
2050 spin_unlock_bh(&priv->tx_lock);
2051 pci_unmap_single(priv->pdev, dma, skb->len,
2052 PCI_DMA_TODEVICE);
2053 dev_kfree_skb(skb);
2054 return;
2055 }
2056 }
2057
2058 BUG_ON(txq->skb[txq->tail] != NULL);
2059 txq->skb[txq->tail] = skb;
2060
2061 tx = txq->txd + txq->tail;
2062 tx->data_rate = txdatarate;
2063 tx->tx_priority = txpriority;
2064 tx->qos_control = cpu_to_le16(qos);
2065 tx->pkt_phys_addr = cpu_to_le32(dma);
2066 tx->pkt_len = cpu_to_le16(skb->len);
2067 tx->rate_info = 0;
2068 if (!priv->ap_fw && sta != NULL)
2069 tx->peer_id = MWL8K_STA(sta)->peer_id;
2070 else
2071 tx->peer_id = 0;
2072
2073 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2074 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2075 MWL8K_HW_TIMER_REGISTER));
2076 else
2077 tx->timestamp = 0;
2078
2079 wmb();
2080 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2081
2082 txq->len++;
2083 priv->pending_tx_pkts++;
2084
2085 txq->tail++;
2086 if (txq->tail == MWL8K_TX_DESCS)
2087 txq->tail = 0;
2088
2089 mwl8k_tx_start(priv);
2090
2091 spin_unlock_bh(&priv->tx_lock);
2092
2093 /* Initiate the ampdu session here */
2094 if (start_ba_session) {
2095 spin_lock(&priv->stream_lock);
2096 if (mwl8k_start_stream(hw, stream))
2097 mwl8k_remove_stream(hw, stream);
2098 spin_unlock(&priv->stream_lock);
2099 }
2100}
2101
2102
2103/*
2104 * Firmware access.
2105 *
2106 * We have the following requirements for issuing firmware commands:
2107 * - Some commands require that the packet transmit path is idle when
2108 * the command is issued. (For simplicity, we'll just quiesce the
2109 * transmit path for every command.)
2110 * - There are certain sequences of commands that need to be issued to
2111 * the hardware sequentially, with no other intervening commands.
2112 *
2113 * This leads to an implementation of a "firmware lock" as a mutex that
2114 * can be taken recursively, and which is taken by both the low-level
2115 * command submission function (mwl8k_post_cmd) as well as any users of
2116 * that function that require issuing of an atomic sequence of commands,
2117 * and quiesces the transmit path whenever it's taken.
2118 */
2119static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2120{
2121 struct mwl8k_priv *priv = hw->priv;
2122
2123 if (priv->fw_mutex_owner != current) {
2124 int rc;
2125
2126 mutex_lock(&priv->fw_mutex);
2127 ieee80211_stop_queues(hw);
2128
2129 rc = mwl8k_tx_wait_empty(hw);
2130 if (rc) {
2131 if (!priv->hw_restart_in_progress)
2132 ieee80211_wake_queues(hw);
2133
2134 mutex_unlock(&priv->fw_mutex);
2135
2136 return rc;
2137 }
2138
2139 priv->fw_mutex_owner = current;
2140 }
2141
2142 priv->fw_mutex_depth++;
2143
2144 return 0;
2145}
2146
2147static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2148{
2149 struct mwl8k_priv *priv = hw->priv;
2150
2151 if (!--priv->fw_mutex_depth) {
2152 if (!priv->hw_restart_in_progress)
2153 ieee80211_wake_queues(hw);
2154
2155 priv->fw_mutex_owner = NULL;
2156 mutex_unlock(&priv->fw_mutex);
2157 }
2158}
2159
2160static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2161 u32 bitmap);
2162
2163/*
2164 * Command processing.
2165 */
2166
2167/* Timeout firmware commands after 10s */
2168#define MWL8K_CMD_TIMEOUT_MS 10000
2169
2170static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2171{
2172 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2173 struct mwl8k_priv *priv = hw->priv;
2174 void __iomem *regs = priv->regs;
2175 dma_addr_t dma_addr;
2176 unsigned int dma_size;
2177 int rc;
2178 unsigned long timeout = 0;
2179 u8 buf[32];
2180 u32 bitmap = 0;
2181
2182 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2183 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2184
2185 /* Before posting firmware commands that could change the hardware
2186 * characteristics, make sure that all BSSes are stopped temporary.
2187 * Enable these stopped BSSes after completion of the commands
2188 */
2189
2190 rc = mwl8k_fw_lock(hw);
2191 if (rc)
2192 return rc;
2193
2194 if (priv->ap_fw && priv->running_bsses) {
2195 switch (le16_to_cpu(cmd->code)) {
2196 case MWL8K_CMD_SET_RF_CHANNEL:
2197 case MWL8K_CMD_RADIO_CONTROL:
2198 case MWL8K_CMD_RF_TX_POWER:
2199 case MWL8K_CMD_TX_POWER:
2200 case MWL8K_CMD_RF_ANTENNA:
2201 case MWL8K_CMD_RTS_THRESHOLD:
2202 case MWL8K_CMD_MIMO_CONFIG:
2203 bitmap = priv->running_bsses;
2204 mwl8k_enable_bsses(hw, false, bitmap);
2205 break;
2206 }
2207 }
2208
2209 cmd->result = (__force __le16) 0xffff;
2210 dma_size = le16_to_cpu(cmd->length);
2211 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2212 PCI_DMA_BIDIRECTIONAL);
2213 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2214 return -ENOMEM;
2215
2216 priv->hostcmd_wait = &cmd_wait;
2217 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2218 iowrite32(MWL8K_H2A_INT_DOORBELL,
2219 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2220 iowrite32(MWL8K_H2A_INT_DUMMY,
2221 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2222
2223 timeout = wait_for_completion_timeout(&cmd_wait,
2224 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2225
2226 priv->hostcmd_wait = NULL;
2227
2228
2229 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2230 PCI_DMA_BIDIRECTIONAL);
2231
2232 if (!timeout) {
2233 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2234 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2235 MWL8K_CMD_TIMEOUT_MS);
2236 rc = -ETIMEDOUT;
2237 } else {
2238 int ms;
2239
2240 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2241
2242 rc = cmd->result ? -EINVAL : 0;
2243 if (rc)
2244 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2245 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2246 le16_to_cpu(cmd->result));
2247 else if (ms > 2000)
2248 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2249 mwl8k_cmd_name(cmd->code,
2250 buf, sizeof(buf)),
2251 ms);
2252 }
2253
2254 if (bitmap)
2255 mwl8k_enable_bsses(hw, true, bitmap);
2256
2257 mwl8k_fw_unlock(hw);
2258
2259 return rc;
2260}
2261
2262static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2263 struct ieee80211_vif *vif,
2264 struct mwl8k_cmd_pkt *cmd)
2265{
2266 if (vif != NULL)
2267 cmd->macid = MWL8K_VIF(vif)->macid;
2268 return mwl8k_post_cmd(hw, cmd);
2269}
2270
2271/*
2272 * Setup code shared between STA and AP firmware images.
2273 */
2274static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2275{
2276 struct mwl8k_priv *priv = hw->priv;
2277
2278 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2279 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2280
2281 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2282 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2283
2284 priv->band_24.band = IEEE80211_BAND_2GHZ;
2285 priv->band_24.channels = priv->channels_24;
2286 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2287 priv->band_24.bitrates = priv->rates_24;
2288 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2289
2290 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2291}
2292
2293static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2294{
2295 struct mwl8k_priv *priv = hw->priv;
2296
2297 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2298 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2299
2300 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2301 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2302
2303 priv->band_50.band = IEEE80211_BAND_5GHZ;
2304 priv->band_50.channels = priv->channels_50;
2305 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2306 priv->band_50.bitrates = priv->rates_50;
2307 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2308
2309 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2310}
2311
2312/*
2313 * CMD_GET_HW_SPEC (STA version).
2314 */
2315struct mwl8k_cmd_get_hw_spec_sta {
2316 struct mwl8k_cmd_pkt header;
2317 __u8 hw_rev;
2318 __u8 host_interface;
2319 __le16 num_mcaddrs;
2320 __u8 perm_addr[ETH_ALEN];
2321 __le16 region_code;
2322 __le32 fw_rev;
2323 __le32 ps_cookie;
2324 __le32 caps;
2325 __u8 mcs_bitmap[16];
2326 __le32 rx_queue_ptr;
2327 __le32 num_tx_queues;
2328 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2329 __le32 caps2;
2330 __le32 num_tx_desc_per_queue;
2331 __le32 total_rxd;
2332} __packed;
2333
2334#define MWL8K_CAP_MAX_AMSDU 0x20000000
2335#define MWL8K_CAP_GREENFIELD 0x08000000
2336#define MWL8K_CAP_AMPDU 0x04000000
2337#define MWL8K_CAP_RX_STBC 0x01000000
2338#define MWL8K_CAP_TX_STBC 0x00800000
2339#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2340#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2341#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2342#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2343#define MWL8K_CAP_DELAY_BA 0x00003000
2344#define MWL8K_CAP_MIMO 0x00000200
2345#define MWL8K_CAP_40MHZ 0x00000100
2346#define MWL8K_CAP_BAND_MASK 0x00000007
2347#define MWL8K_CAP_5GHZ 0x00000004
2348#define MWL8K_CAP_2GHZ4 0x00000001
2349
2350static void
2351mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2352 struct ieee80211_supported_band *band, u32 cap)
2353{
2354 int rx_streams;
2355 int tx_streams;
2356
2357 band->ht_cap.ht_supported = 1;
2358
2359 if (cap & MWL8K_CAP_MAX_AMSDU)
2360 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2361 if (cap & MWL8K_CAP_GREENFIELD)
2362 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2363 if (cap & MWL8K_CAP_AMPDU) {
2364 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2365 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2366 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2367 }
2368 if (cap & MWL8K_CAP_RX_STBC)
2369 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2370 if (cap & MWL8K_CAP_TX_STBC)
2371 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2372 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2373 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2374 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2375 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2376 if (cap & MWL8K_CAP_DELAY_BA)
2377 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2378 if (cap & MWL8K_CAP_40MHZ)
2379 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2380
2381 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2382 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2383
2384 band->ht_cap.mcs.rx_mask[0] = 0xff;
2385 if (rx_streams >= 2)
2386 band->ht_cap.mcs.rx_mask[1] = 0xff;
2387 if (rx_streams >= 3)
2388 band->ht_cap.mcs.rx_mask[2] = 0xff;
2389 band->ht_cap.mcs.rx_mask[4] = 0x01;
2390 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2391
2392 if (rx_streams != tx_streams) {
2393 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2394 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2395 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2396 }
2397}
2398
2399static void
2400mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2401{
2402 struct mwl8k_priv *priv = hw->priv;
2403
2404 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2405 mwl8k_setup_2ghz_band(hw);
2406 if (caps & MWL8K_CAP_MIMO)
2407 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2408 }
2409
2410 if (caps & MWL8K_CAP_5GHZ) {
2411 mwl8k_setup_5ghz_band(hw);
2412 if (caps & MWL8K_CAP_MIMO)
2413 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2414 }
2415}
2416
2417static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2418{
2419 struct mwl8k_priv *priv = hw->priv;
2420 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2421 int rc;
2422 int i;
2423
2424 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2425 if (cmd == NULL)
2426 return -ENOMEM;
2427
2428 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2429 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2430
2431 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2432 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2433 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2434 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2435 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2436 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2437 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2438 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2439
2440 rc = mwl8k_post_cmd(hw, &cmd->header);
2441
2442 if (!rc) {
2443 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2444 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2445 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2446 priv->hw_rev = cmd->hw_rev;
2447 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2448 priv->ap_macids_supported = 0x00000000;
2449 priv->sta_macids_supported = 0x00000001;
2450 }
2451
2452 kfree(cmd);
2453 return rc;
2454}
2455
2456/*
2457 * CMD_GET_HW_SPEC (AP version).
2458 */
2459struct mwl8k_cmd_get_hw_spec_ap {
2460 struct mwl8k_cmd_pkt header;
2461 __u8 hw_rev;
2462 __u8 host_interface;
2463 __le16 num_wcb;
2464 __le16 num_mcaddrs;
2465 __u8 perm_addr[ETH_ALEN];
2466 __le16 region_code;
2467 __le16 num_antenna;
2468 __le32 fw_rev;
2469 __le32 wcbbase0;
2470 __le32 rxwrptr;
2471 __le32 rxrdptr;
2472 __le32 ps_cookie;
2473 __le32 wcbbase1;
2474 __le32 wcbbase2;
2475 __le32 wcbbase3;
2476 __le32 fw_api_version;
2477 __le32 caps;
2478 __le32 num_of_ampdu_queues;
2479 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2480} __packed;
2481
2482static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2483{
2484 struct mwl8k_priv *priv = hw->priv;
2485 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2486 int rc, i;
2487 u32 api_version;
2488
2489 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2490 if (cmd == NULL)
2491 return -ENOMEM;
2492
2493 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2494 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2495
2496 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2497 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2498
2499 rc = mwl8k_post_cmd(hw, &cmd->header);
2500
2501 if (!rc) {
2502 int off;
2503
2504 api_version = le32_to_cpu(cmd->fw_api_version);
2505 if (priv->device_info->fw_api_ap != api_version) {
2506 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2507 " Expected %d got %d.\n", MWL8K_NAME,
2508 priv->device_info->part_name,
2509 priv->device_info->fw_api_ap,
2510 api_version);
2511 rc = -EINVAL;
2512 goto done;
2513 }
2514 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2515 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2516 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2517 priv->hw_rev = cmd->hw_rev;
2518 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2519 priv->ap_macids_supported = 0x000000ff;
2520 priv->sta_macids_supported = 0x00000100;
2521 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2522 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2523 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2524 " but we only support %d.\n",
2525 priv->num_ampdu_queues,
2526 MWL8K_MAX_AMPDU_QUEUES);
2527 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2528 }
2529 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2530 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2531
2532 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2533 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2534
2535 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2536 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2537 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2538 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2539
2540 for (i = 0; i < priv->num_ampdu_queues; i++)
2541 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2542 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2543 }
2544
2545done:
2546 kfree(cmd);
2547 return rc;
2548}
2549
2550/*
2551 * CMD_SET_HW_SPEC.
2552 */
2553struct mwl8k_cmd_set_hw_spec {
2554 struct mwl8k_cmd_pkt header;
2555 __u8 hw_rev;
2556 __u8 host_interface;
2557 __le16 num_mcaddrs;
2558 __u8 perm_addr[ETH_ALEN];
2559 __le16 region_code;
2560 __le32 fw_rev;
2561 __le32 ps_cookie;
2562 __le32 caps;
2563 __le32 rx_queue_ptr;
2564 __le32 num_tx_queues;
2565 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2566 __le32 flags;
2567 __le32 num_tx_desc_per_queue;
2568 __le32 total_rxd;
2569} __packed;
2570
2571/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2572 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2573 * the packets that are queued for more than 500ms, will be dropped in the
2574 * hardware. This helps minimizing the issues caused due to head-of-line
2575 * blocking where a slow client can hog the bandwidth and affect traffic to a
2576 * faster client.
2577 */
2578#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2579#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2580#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2581#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2582#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2583
2584static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2585{
2586 struct mwl8k_priv *priv = hw->priv;
2587 struct mwl8k_cmd_set_hw_spec *cmd;
2588 int rc;
2589 int i;
2590
2591 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2592 if (cmd == NULL)
2593 return -ENOMEM;
2594
2595 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2596 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2597
2598 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2599 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2600 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2601
2602 /*
2603 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2604 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2605 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2606 * priority is interpreted the right way in firmware.
2607 */
2608 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2609 int j = mwl8k_tx_queues(priv) - 1 - i;
2610 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2611 }
2612
2613 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2614 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2615 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2616 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2617 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2618 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2619 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2620
2621 rc = mwl8k_post_cmd(hw, &cmd->header);
2622 kfree(cmd);
2623
2624 return rc;
2625}
2626
2627/*
2628 * CMD_MAC_MULTICAST_ADR.
2629 */
2630struct mwl8k_cmd_mac_multicast_adr {
2631 struct mwl8k_cmd_pkt header;
2632 __le16 action;
2633 __le16 numaddr;
2634 __u8 addr[0][ETH_ALEN];
2635};
2636
2637#define MWL8K_ENABLE_RX_DIRECTED 0x0001
2638#define MWL8K_ENABLE_RX_MULTICAST 0x0002
2639#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2640#define MWL8K_ENABLE_RX_BROADCAST 0x0008
2641
2642static struct mwl8k_cmd_pkt *
2643__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2644 struct netdev_hw_addr_list *mc_list)
2645{
2646 struct mwl8k_priv *priv = hw->priv;
2647 struct mwl8k_cmd_mac_multicast_adr *cmd;
2648 int size;
2649 int mc_count = 0;
2650
2651 if (mc_list)
2652 mc_count = netdev_hw_addr_list_count(mc_list);
2653
2654 if (allmulti || mc_count > priv->num_mcaddrs) {
2655 allmulti = 1;
2656 mc_count = 0;
2657 }
2658
2659 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2660
2661 cmd = kzalloc(size, GFP_ATOMIC);
2662 if (cmd == NULL)
2663 return NULL;
2664
2665 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2666 cmd->header.length = cpu_to_le16(size);
2667 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2668 MWL8K_ENABLE_RX_BROADCAST);
2669
2670 if (allmulti) {
2671 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2672 } else if (mc_count) {
2673 struct netdev_hw_addr *ha;
2674 int i = 0;
2675
2676 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2677 cmd->numaddr = cpu_to_le16(mc_count);
2678 netdev_hw_addr_list_for_each(ha, mc_list) {
2679 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2680 }
2681 }
2682
2683 return &cmd->header;
2684}
2685
2686/*
2687 * CMD_GET_STAT.
2688 */
2689struct mwl8k_cmd_get_stat {
2690 struct mwl8k_cmd_pkt header;
2691 __le32 stats[64];
2692} __packed;
2693
2694#define MWL8K_STAT_ACK_FAILURE 9
2695#define MWL8K_STAT_RTS_FAILURE 12
2696#define MWL8K_STAT_FCS_ERROR 24
2697#define MWL8K_STAT_RTS_SUCCESS 11
2698
2699static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2700 struct ieee80211_low_level_stats *stats)
2701{
2702 struct mwl8k_cmd_get_stat *cmd;
2703 int rc;
2704
2705 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2706 if (cmd == NULL)
2707 return -ENOMEM;
2708
2709 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2710 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2711
2712 rc = mwl8k_post_cmd(hw, &cmd->header);
2713 if (!rc) {
2714 stats->dot11ACKFailureCount =
2715 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2716 stats->dot11RTSFailureCount =
2717 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2718 stats->dot11FCSErrorCount =
2719 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2720 stats->dot11RTSSuccessCount =
2721 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2722 }
2723 kfree(cmd);
2724
2725 return rc;
2726}
2727
2728/*
2729 * CMD_RADIO_CONTROL.
2730 */
2731struct mwl8k_cmd_radio_control {
2732 struct mwl8k_cmd_pkt header;
2733 __le16 action;
2734 __le16 control;
2735 __le16 radio_on;
2736} __packed;
2737
2738static int
2739mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2740{
2741 struct mwl8k_priv *priv = hw->priv;
2742 struct mwl8k_cmd_radio_control *cmd;
2743 int rc;
2744
2745 if (enable == priv->radio_on && !force)
2746 return 0;
2747
2748 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2749 if (cmd == NULL)
2750 return -ENOMEM;
2751
2752 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2753 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2754 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2755 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2756 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2757
2758 rc = mwl8k_post_cmd(hw, &cmd->header);
2759 kfree(cmd);
2760
2761 if (!rc)
2762 priv->radio_on = enable;
2763
2764 return rc;
2765}
2766
2767static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2768{
2769 return mwl8k_cmd_radio_control(hw, 0, 0);
2770}
2771
2772static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2773{
2774 return mwl8k_cmd_radio_control(hw, 1, 0);
2775}
2776
2777static int
2778mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2779{
2780 struct mwl8k_priv *priv = hw->priv;
2781
2782 priv->radio_short_preamble = short_preamble;
2783
2784 return mwl8k_cmd_radio_control(hw, 1, 1);
2785}
2786
2787/*
2788 * CMD_RF_TX_POWER.
2789 */
2790#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2791
2792struct mwl8k_cmd_rf_tx_power {
2793 struct mwl8k_cmd_pkt header;
2794 __le16 action;
2795 __le16 support_level;
2796 __le16 current_level;
2797 __le16 reserved;
2798 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2799} __packed;
2800
2801static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2802{
2803 struct mwl8k_cmd_rf_tx_power *cmd;
2804 int rc;
2805
2806 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2807 if (cmd == NULL)
2808 return -ENOMEM;
2809
2810 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2811 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2812 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2813 cmd->support_level = cpu_to_le16(dBm);
2814
2815 rc = mwl8k_post_cmd(hw, &cmd->header);
2816 kfree(cmd);
2817
2818 return rc;
2819}
2820
2821/*
2822 * CMD_TX_POWER.
2823 */
2824#define MWL8K_TX_POWER_LEVEL_TOTAL 12
2825
2826struct mwl8k_cmd_tx_power {
2827 struct mwl8k_cmd_pkt header;
2828 __le16 action;
2829 __le16 band;
2830 __le16 channel;
2831 __le16 bw;
2832 __le16 sub_ch;
2833 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2834} __packed;
2835
2836static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2837 struct ieee80211_conf *conf,
2838 unsigned short pwr)
2839{
2840 struct ieee80211_channel *channel = conf->channel;
2841 struct mwl8k_cmd_tx_power *cmd;
2842 int rc;
2843 int i;
2844
2845 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2846 if (cmd == NULL)
2847 return -ENOMEM;
2848
2849 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2850 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2851 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2852
2853 if (channel->band == IEEE80211_BAND_2GHZ)
2854 cmd->band = cpu_to_le16(0x1);
2855 else if (channel->band == IEEE80211_BAND_5GHZ)
2856 cmd->band = cpu_to_le16(0x4);
2857
2858 cmd->channel = cpu_to_le16(channel->hw_value);
2859
2860 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2861 conf->channel_type == NL80211_CHAN_HT20) {
2862 cmd->bw = cpu_to_le16(0x2);
2863 } else {
2864 cmd->bw = cpu_to_le16(0x4);
2865 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2866 cmd->sub_ch = cpu_to_le16(0x3);
2867 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2868 cmd->sub_ch = cpu_to_le16(0x1);
2869 }
2870
2871 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2872 cmd->power_level_list[i] = cpu_to_le16(pwr);
2873
2874 rc = mwl8k_post_cmd(hw, &cmd->header);
2875 kfree(cmd);
2876
2877 return rc;
2878}
2879
2880/*
2881 * CMD_RF_ANTENNA.
2882 */
2883struct mwl8k_cmd_rf_antenna {
2884 struct mwl8k_cmd_pkt header;
2885 __le16 antenna;
2886 __le16 mode;
2887} __packed;
2888
2889#define MWL8K_RF_ANTENNA_RX 1
2890#define MWL8K_RF_ANTENNA_TX 2
2891
2892static int
2893mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2894{
2895 struct mwl8k_cmd_rf_antenna *cmd;
2896 int rc;
2897
2898 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2899 if (cmd == NULL)
2900 return -ENOMEM;
2901
2902 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2903 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2904 cmd->antenna = cpu_to_le16(antenna);
2905 cmd->mode = cpu_to_le16(mask);
2906
2907 rc = mwl8k_post_cmd(hw, &cmd->header);
2908 kfree(cmd);
2909
2910 return rc;
2911}
2912
2913/*
2914 * CMD_SET_BEACON.
2915 */
2916struct mwl8k_cmd_set_beacon {
2917 struct mwl8k_cmd_pkt header;
2918 __le16 beacon_len;
2919 __u8 beacon[0];
2920};
2921
2922static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2923 struct ieee80211_vif *vif, u8 *beacon, int len)
2924{
2925 struct mwl8k_cmd_set_beacon *cmd;
2926 int rc;
2927
2928 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2929 if (cmd == NULL)
2930 return -ENOMEM;
2931
2932 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2933 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2934 cmd->beacon_len = cpu_to_le16(len);
2935 memcpy(cmd->beacon, beacon, len);
2936
2937 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2938 kfree(cmd);
2939
2940 return rc;
2941}
2942
2943/*
2944 * CMD_SET_PRE_SCAN.
2945 */
2946struct mwl8k_cmd_set_pre_scan {
2947 struct mwl8k_cmd_pkt header;
2948} __packed;
2949
2950static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2951{
2952 struct mwl8k_cmd_set_pre_scan *cmd;
2953 int rc;
2954
2955 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2956 if (cmd == NULL)
2957 return -ENOMEM;
2958
2959 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2960 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2961
2962 rc = mwl8k_post_cmd(hw, &cmd->header);
2963 kfree(cmd);
2964
2965 return rc;
2966}
2967
2968/*
2969 * CMD_SET_POST_SCAN.
2970 */
2971struct mwl8k_cmd_set_post_scan {
2972 struct mwl8k_cmd_pkt header;
2973 __le32 isibss;
2974 __u8 bssid[ETH_ALEN];
2975} __packed;
2976
2977static int
2978mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2979{
2980 struct mwl8k_cmd_set_post_scan *cmd;
2981 int rc;
2982
2983 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2984 if (cmd == NULL)
2985 return -ENOMEM;
2986
2987 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2988 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2989 cmd->isibss = 0;
2990 memcpy(cmd->bssid, mac, ETH_ALEN);
2991
2992 rc = mwl8k_post_cmd(hw, &cmd->header);
2993 kfree(cmd);
2994
2995 return rc;
2996}
2997
2998/*
2999 * CMD_SET_RF_CHANNEL.
3000 */
3001struct mwl8k_cmd_set_rf_channel {
3002 struct mwl8k_cmd_pkt header;
3003 __le16 action;
3004 __u8 current_channel;
3005 __le32 channel_flags;
3006} __packed;
3007
3008static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3009 struct ieee80211_conf *conf)
3010{
3011 struct ieee80211_channel *channel = conf->channel;
3012 struct mwl8k_cmd_set_rf_channel *cmd;
3013 int rc;
3014
3015 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3016 if (cmd == NULL)
3017 return -ENOMEM;
3018
3019 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3020 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3021 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3022 cmd->current_channel = channel->hw_value;
3023
3024 if (channel->band == IEEE80211_BAND_2GHZ)
3025 cmd->channel_flags |= cpu_to_le32(0x00000001);
3026 else if (channel->band == IEEE80211_BAND_5GHZ)
3027 cmd->channel_flags |= cpu_to_le32(0x00000004);
3028
3029 if (conf->channel_type == NL80211_CHAN_NO_HT ||
3030 conf->channel_type == NL80211_CHAN_HT20)
3031 cmd->channel_flags |= cpu_to_le32(0x00000080);
3032 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
3033 cmd->channel_flags |= cpu_to_le32(0x000001900);
3034 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
3035 cmd->channel_flags |= cpu_to_le32(0x000000900);
3036
3037 rc = mwl8k_post_cmd(hw, &cmd->header);
3038 kfree(cmd);
3039
3040 return rc;
3041}
3042
3043/*
3044 * CMD_SET_AID.
3045 */
3046#define MWL8K_FRAME_PROT_DISABLED 0x00
3047#define MWL8K_FRAME_PROT_11G 0x07
3048#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
3049#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
3050
3051struct mwl8k_cmd_update_set_aid {
3052 struct mwl8k_cmd_pkt header;
3053 __le16 aid;
3054
3055 /* AP's MAC address (BSSID) */
3056 __u8 bssid[ETH_ALEN];
3057 __le16 protection_mode;
3058 __u8 supp_rates[14];
3059} __packed;
3060
3061static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3062{
3063 int i;
3064 int j;
3065
3066 /*
3067 * Clear nonstandard rates 4 and 13.
3068 */
3069 mask &= 0x1fef;
3070
3071 for (i = 0, j = 0; i < 14; i++) {
3072 if (mask & (1 << i))
3073 rates[j++] = mwl8k_rates_24[i].hw_value;
3074 }
3075}
3076
3077static int
3078mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3079 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3080{
3081 struct mwl8k_cmd_update_set_aid *cmd;
3082 u16 prot_mode;
3083 int rc;
3084
3085 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3086 if (cmd == NULL)
3087 return -ENOMEM;
3088
3089 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3090 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3091 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3092 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3093
3094 if (vif->bss_conf.use_cts_prot) {
3095 prot_mode = MWL8K_FRAME_PROT_11G;
3096 } else {
3097 switch (vif->bss_conf.ht_operation_mode &
3098 IEEE80211_HT_OP_MODE_PROTECTION) {
3099 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3100 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3101 break;
3102 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3103 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3104 break;
3105 default:
3106 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3107 break;
3108 }
3109 }
3110 cmd->protection_mode = cpu_to_le16(prot_mode);
3111
3112 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3113
3114 rc = mwl8k_post_cmd(hw, &cmd->header);
3115 kfree(cmd);
3116
3117 return rc;
3118}
3119
3120/*
3121 * CMD_SET_RATE.
3122 */
3123struct mwl8k_cmd_set_rate {
3124 struct mwl8k_cmd_pkt header;
3125 __u8 legacy_rates[14];
3126
3127 /* Bitmap for supported MCS codes. */
3128 __u8 mcs_set[16];
3129 __u8 reserved[16];
3130} __packed;
3131
3132static int
3133mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3134 u32 legacy_rate_mask, u8 *mcs_rates)
3135{
3136 struct mwl8k_cmd_set_rate *cmd;
3137 int rc;
3138
3139 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3140 if (cmd == NULL)
3141 return -ENOMEM;
3142
3143 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3144 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3145 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3146 memcpy(cmd->mcs_set, mcs_rates, 16);
3147
3148 rc = mwl8k_post_cmd(hw, &cmd->header);
3149 kfree(cmd);
3150
3151 return rc;
3152}
3153
3154/*
3155 * CMD_FINALIZE_JOIN.
3156 */
3157#define MWL8K_FJ_BEACON_MAXLEN 128
3158
3159struct mwl8k_cmd_finalize_join {
3160 struct mwl8k_cmd_pkt header;
3161 __le32 sleep_interval; /* Number of beacon periods to sleep */
3162 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3163} __packed;
3164
3165static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3166 int framelen, int dtim)
3167{
3168 struct mwl8k_cmd_finalize_join *cmd;
3169 struct ieee80211_mgmt *payload = frame;
3170 int payload_len;
3171 int rc;
3172
3173 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3174 if (cmd == NULL)
3175 return -ENOMEM;
3176
3177 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3178 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3179 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3180
3181 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3182 if (payload_len < 0)
3183 payload_len = 0;
3184 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3185 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3186
3187 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3188
3189 rc = mwl8k_post_cmd(hw, &cmd->header);
3190 kfree(cmd);
3191
3192 return rc;
3193}
3194
3195/*
3196 * CMD_SET_RTS_THRESHOLD.
3197 */
3198struct mwl8k_cmd_set_rts_threshold {
3199 struct mwl8k_cmd_pkt header;
3200 __le16 action;
3201 __le16 threshold;
3202} __packed;
3203
3204static int
3205mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3206{
3207 struct mwl8k_cmd_set_rts_threshold *cmd;
3208 int rc;
3209
3210 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3211 if (cmd == NULL)
3212 return -ENOMEM;
3213
3214 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3215 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3216 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3217 cmd->threshold = cpu_to_le16(rts_thresh);
3218
3219 rc = mwl8k_post_cmd(hw, &cmd->header);
3220 kfree(cmd);
3221
3222 return rc;
3223}
3224
3225/*
3226 * CMD_SET_SLOT.
3227 */
3228struct mwl8k_cmd_set_slot {
3229 struct mwl8k_cmd_pkt header;
3230 __le16 action;
3231 __u8 short_slot;
3232} __packed;
3233
3234static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3235{
3236 struct mwl8k_cmd_set_slot *cmd;
3237 int rc;
3238
3239 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3240 if (cmd == NULL)
3241 return -ENOMEM;
3242
3243 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3244 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3245 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3246 cmd->short_slot = short_slot_time;
3247
3248 rc = mwl8k_post_cmd(hw, &cmd->header);
3249 kfree(cmd);
3250
3251 return rc;
3252}
3253
3254/*
3255 * CMD_SET_EDCA_PARAMS.
3256 */
3257struct mwl8k_cmd_set_edca_params {
3258 struct mwl8k_cmd_pkt header;
3259
3260 /* See MWL8K_SET_EDCA_XXX below */
3261 __le16 action;
3262
3263 /* TX opportunity in units of 32 us */
3264 __le16 txop;
3265
3266 union {
3267 struct {
3268 /* Log exponent of max contention period: 0...15 */
3269 __le32 log_cw_max;
3270
3271 /* Log exponent of min contention period: 0...15 */
3272 __le32 log_cw_min;
3273
3274 /* Adaptive interframe spacing in units of 32us */
3275 __u8 aifs;
3276
3277 /* TX queue to configure */
3278 __u8 txq;
3279 } ap;
3280 struct {
3281 /* Log exponent of max contention period: 0...15 */
3282 __u8 log_cw_max;
3283
3284 /* Log exponent of min contention period: 0...15 */
3285 __u8 log_cw_min;
3286
3287 /* Adaptive interframe spacing in units of 32us */
3288 __u8 aifs;
3289
3290 /* TX queue to configure */
3291 __u8 txq;
3292 } sta;
3293 };
3294} __packed;
3295
3296#define MWL8K_SET_EDCA_CW 0x01
3297#define MWL8K_SET_EDCA_TXOP 0x02
3298#define MWL8K_SET_EDCA_AIFS 0x04
3299
3300#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3301 MWL8K_SET_EDCA_TXOP | \
3302 MWL8K_SET_EDCA_AIFS)
3303
3304static int
3305mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3306 __u16 cw_min, __u16 cw_max,
3307 __u8 aifs, __u16 txop)
3308{
3309 struct mwl8k_priv *priv = hw->priv;
3310 struct mwl8k_cmd_set_edca_params *cmd;
3311 int rc;
3312
3313 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3314 if (cmd == NULL)
3315 return -ENOMEM;
3316
3317 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3318 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3319 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3320 cmd->txop = cpu_to_le16(txop);
3321 if (priv->ap_fw) {
3322 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3323 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3324 cmd->ap.aifs = aifs;
3325 cmd->ap.txq = qnum;
3326 } else {
3327 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3328 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3329 cmd->sta.aifs = aifs;
3330 cmd->sta.txq = qnum;
3331 }
3332
3333 rc = mwl8k_post_cmd(hw, &cmd->header);
3334 kfree(cmd);
3335
3336 return rc;
3337}
3338
3339/*
3340 * CMD_SET_WMM_MODE.
3341 */
3342struct mwl8k_cmd_set_wmm_mode {
3343 struct mwl8k_cmd_pkt header;
3344 __le16 action;
3345} __packed;
3346
3347static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3348{
3349 struct mwl8k_priv *priv = hw->priv;
3350 struct mwl8k_cmd_set_wmm_mode *cmd;
3351 int rc;
3352
3353 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3354 if (cmd == NULL)
3355 return -ENOMEM;
3356
3357 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3358 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3359 cmd->action = cpu_to_le16(!!enable);
3360
3361 rc = mwl8k_post_cmd(hw, &cmd->header);
3362 kfree(cmd);
3363
3364 if (!rc)
3365 priv->wmm_enabled = enable;
3366
3367 return rc;
3368}
3369
3370/*
3371 * CMD_MIMO_CONFIG.
3372 */
3373struct mwl8k_cmd_mimo_config {
3374 struct mwl8k_cmd_pkt header;
3375 __le32 action;
3376 __u8 rx_antenna_map;
3377 __u8 tx_antenna_map;
3378} __packed;
3379
3380static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3381{
3382 struct mwl8k_cmd_mimo_config *cmd;
3383 int rc;
3384
3385 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3386 if (cmd == NULL)
3387 return -ENOMEM;
3388
3389 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3390 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3391 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3392 cmd->rx_antenna_map = rx;
3393 cmd->tx_antenna_map = tx;
3394
3395 rc = mwl8k_post_cmd(hw, &cmd->header);
3396 kfree(cmd);
3397
3398 return rc;
3399}
3400
3401/*
3402 * CMD_USE_FIXED_RATE (STA version).
3403 */
3404struct mwl8k_cmd_use_fixed_rate_sta {
3405 struct mwl8k_cmd_pkt header;
3406 __le32 action;
3407 __le32 allow_rate_drop;
3408 __le32 num_rates;
3409 struct {
3410 __le32 is_ht_rate;
3411 __le32 enable_retry;
3412 __le32 rate;
3413 __le32 retry_count;
3414 } rate_entry[8];
3415 __le32 rate_type;
3416 __le32 reserved1;
3417 __le32 reserved2;
3418} __packed;
3419
3420#define MWL8K_USE_AUTO_RATE 0x0002
3421#define MWL8K_UCAST_RATE 0
3422
3423static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3424{
3425 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3426 int rc;
3427
3428 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3429 if (cmd == NULL)
3430 return -ENOMEM;
3431
3432 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3433 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3434 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3435 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3436
3437 rc = mwl8k_post_cmd(hw, &cmd->header);
3438 kfree(cmd);
3439
3440 return rc;
3441}
3442
3443/*
3444 * CMD_USE_FIXED_RATE (AP version).
3445 */
3446struct mwl8k_cmd_use_fixed_rate_ap {
3447 struct mwl8k_cmd_pkt header;
3448 __le32 action;
3449 __le32 allow_rate_drop;
3450 __le32 num_rates;
3451 struct mwl8k_rate_entry_ap {
3452 __le32 is_ht_rate;
3453 __le32 enable_retry;
3454 __le32 rate;
3455 __le32 retry_count;
3456 } rate_entry[4];
3457 u8 multicast_rate;
3458 u8 multicast_rate_type;
3459 u8 management_rate;
3460} __packed;
3461
3462static int
3463mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3464{
3465 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3466 int rc;
3467
3468 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3469 if (cmd == NULL)
3470 return -ENOMEM;
3471
3472 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3473 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3474 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3475 cmd->multicast_rate = mcast;
3476 cmd->management_rate = mgmt;
3477
3478 rc = mwl8k_post_cmd(hw, &cmd->header);
3479 kfree(cmd);
3480
3481 return rc;
3482}
3483
3484/*
3485 * CMD_ENABLE_SNIFFER.
3486 */
3487struct mwl8k_cmd_enable_sniffer {
3488 struct mwl8k_cmd_pkt header;
3489 __le32 action;
3490} __packed;
3491
3492static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3493{
3494 struct mwl8k_cmd_enable_sniffer *cmd;
3495 int rc;
3496
3497 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3498 if (cmd == NULL)
3499 return -ENOMEM;
3500
3501 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3502 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3503 cmd->action = cpu_to_le32(!!enable);
3504
3505 rc = mwl8k_post_cmd(hw, &cmd->header);
3506 kfree(cmd);
3507
3508 return rc;
3509}
3510
3511struct mwl8k_cmd_update_mac_addr {
3512 struct mwl8k_cmd_pkt header;
3513 union {
3514 struct {
3515 __le16 mac_type;
3516 __u8 mac_addr[ETH_ALEN];
3517 } mbss;
3518 __u8 mac_addr[ETH_ALEN];
3519 };
3520} __packed;
3521
3522#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3523#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3524#define MWL8K_MAC_TYPE_PRIMARY_AP 2
3525#define MWL8K_MAC_TYPE_SECONDARY_AP 3
3526
3527static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3528 struct ieee80211_vif *vif, u8 *mac, bool set)
3529{
3530 struct mwl8k_priv *priv = hw->priv;
3531 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3532 struct mwl8k_cmd_update_mac_addr *cmd;
3533 int mac_type;
3534 int rc;
3535
3536 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3537 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3538 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3539 if (priv->ap_fw)
3540 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3541 else
3542 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3543 else
3544 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3545 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3546 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3547 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3548 else
3549 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3550 }
3551
3552 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3553 if (cmd == NULL)
3554 return -ENOMEM;
3555
3556 if (set)
3557 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3558 else
3559 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3560
3561 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3562 if (priv->ap_fw) {
3563 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3564 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3565 } else {
3566 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3567 }
3568
3569 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3570 kfree(cmd);
3571
3572 return rc;
3573}
3574
3575/*
3576 * MWL8K_CMD_SET_MAC_ADDR.
3577 */
3578static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3579 struct ieee80211_vif *vif, u8 *mac)
3580{
3581 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3582}
3583
3584/*
3585 * MWL8K_CMD_DEL_MAC_ADDR.
3586 */
3587static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3588 struct ieee80211_vif *vif, u8 *mac)
3589{
3590 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3591}
3592
3593/*
3594 * CMD_SET_RATEADAPT_MODE.
3595 */
3596struct mwl8k_cmd_set_rate_adapt_mode {
3597 struct mwl8k_cmd_pkt header;
3598 __le16 action;
3599 __le16 mode;
3600} __packed;
3601
3602static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3603{
3604 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3605 int rc;
3606
3607 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3608 if (cmd == NULL)
3609 return -ENOMEM;
3610
3611 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3612 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3613 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3614 cmd->mode = cpu_to_le16(mode);
3615
3616 rc = mwl8k_post_cmd(hw, &cmd->header);
3617 kfree(cmd);
3618
3619 return rc;
3620}
3621
3622/*
3623 * CMD_GET_WATCHDOG_BITMAP.
3624 */
3625struct mwl8k_cmd_get_watchdog_bitmap {
3626 struct mwl8k_cmd_pkt header;
3627 u8 bitmap;
3628} __packed;
3629
3630static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3631{
3632 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3633 int rc;
3634
3635 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3636 if (cmd == NULL)
3637 return -ENOMEM;
3638
3639 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3640 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3641
3642 rc = mwl8k_post_cmd(hw, &cmd->header);
3643 if (!rc)
3644 *bitmap = cmd->bitmap;
3645
3646 kfree(cmd);
3647
3648 return rc;
3649}
3650
3651#define MWL8K_WMM_QUEUE_NUMBER 3
3652
3653static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3654 u8 idx);
3655
3656static void mwl8k_watchdog_ba_events(struct work_struct *work)
3657{
3658 int rc;
3659 u8 bitmap = 0, stream_index;
3660 struct mwl8k_ampdu_stream *streams;
3661 struct mwl8k_priv *priv =
3662 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3663 struct ieee80211_hw *hw = priv->hw;
3664 int i;
3665 u32 status = 0;
3666
3667 mwl8k_fw_lock(hw);
3668
3669 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3670 if (rc)
3671 goto done;
3672
3673 spin_lock(&priv->stream_lock);
3674
3675 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3676 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3677 if (bitmap & (1 << i)) {
3678 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3679 TOTAL_HW_TX_QUEUES;
3680 streams = &priv->ampdu[stream_index];
3681 if (streams->state == AMPDU_STREAM_ACTIVE) {
3682 ieee80211_stop_tx_ba_session(streams->sta,
3683 streams->tid);
3684 spin_unlock(&priv->stream_lock);
3685 mwl8k_destroy_ba(hw, stream_index);
3686 spin_lock(&priv->stream_lock);
3687 }
3688 }
3689 }
3690
3691 spin_unlock(&priv->stream_lock);
3692done:
3693 atomic_dec(&priv->watchdog_event_pending);
3694 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3695 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3696 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3697 mwl8k_fw_unlock(hw);
3698 return;
3699}
3700
3701
3702/*
3703 * CMD_BSS_START.
3704 */
3705struct mwl8k_cmd_bss_start {
3706 struct mwl8k_cmd_pkt header;
3707 __le32 enable;
3708} __packed;
3709
3710static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3711 struct ieee80211_vif *vif, int enable)
3712{
3713 struct mwl8k_cmd_bss_start *cmd;
3714 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3715 struct mwl8k_priv *priv = hw->priv;
3716 int rc;
3717
3718 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3719 return 0;
3720
3721 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3722 return 0;
3723
3724 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3725 if (cmd == NULL)
3726 return -ENOMEM;
3727
3728 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3729 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3730 cmd->enable = cpu_to_le32(enable);
3731
3732 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3733 kfree(cmd);
3734
3735 if (!rc) {
3736 if (enable)
3737 priv->running_bsses |= (1 << mwl8k_vif->macid);
3738 else
3739 priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3740 }
3741 return rc;
3742}
3743
3744static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3745{
3746 struct mwl8k_priv *priv = hw->priv;
3747 struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3748 struct ieee80211_vif *vif;
3749
3750 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3751 vif = mwl8k_vif->vif;
3752
3753 if (!(bitmap & (1 << mwl8k_vif->macid)))
3754 continue;
3755
3756 if (vif->type == NL80211_IFTYPE_AP)
3757 mwl8k_cmd_bss_start(hw, vif, enable);
3758 }
3759}
3760/*
3761 * CMD_BASTREAM.
3762 */
3763
3764/*
3765 * UPSTREAM is tx direction
3766 */
3767#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3768#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3769
3770enum ba_stream_action_type {
3771 MWL8K_BA_CREATE,
3772 MWL8K_BA_UPDATE,
3773 MWL8K_BA_DESTROY,
3774 MWL8K_BA_FLUSH,
3775 MWL8K_BA_CHECK,
3776};
3777
3778
3779struct mwl8k_create_ba_stream {
3780 __le32 flags;
3781 __le32 idle_thrs;
3782 __le32 bar_thrs;
3783 __le32 window_size;
3784 u8 peer_mac_addr[6];
3785 u8 dialog_token;
3786 u8 tid;
3787 u8 queue_id;
3788 u8 param_info;
3789 __le32 ba_context;
3790 u8 reset_seq_no_flag;
3791 __le16 curr_seq_no;
3792 u8 sta_src_mac_addr[6];
3793} __packed;
3794
3795struct mwl8k_destroy_ba_stream {
3796 __le32 flags;
3797 __le32 ba_context;
3798} __packed;
3799
3800struct mwl8k_cmd_bastream {
3801 struct mwl8k_cmd_pkt header;
3802 __le32 action;
3803 union {
3804 struct mwl8k_create_ba_stream create_params;
3805 struct mwl8k_destroy_ba_stream destroy_params;
3806 };
3807} __packed;
3808
3809static int
3810mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3811 struct ieee80211_vif *vif)
3812{
3813 struct mwl8k_cmd_bastream *cmd;
3814 int rc;
3815
3816 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3817 if (cmd == NULL)
3818 return -ENOMEM;
3819
3820 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3821 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3822
3823 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3824
3825 cmd->create_params.queue_id = stream->idx;
3826 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3827 ETH_ALEN);
3828 cmd->create_params.tid = stream->tid;
3829
3830 cmd->create_params.flags =
3831 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3832 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3833
3834 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3835
3836 kfree(cmd);
3837
3838 return rc;
3839}
3840
3841static int
3842mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3843 u8 buf_size, struct ieee80211_vif *vif)
3844{
3845 struct mwl8k_cmd_bastream *cmd;
3846 int rc;
3847
3848 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3849 if (cmd == NULL)
3850 return -ENOMEM;
3851
3852
3853 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3854 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3855
3856 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3857
3858 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3859 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3860 cmd->create_params.queue_id = stream->idx;
3861
3862 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3863 cmd->create_params.tid = stream->tid;
3864 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3865 cmd->create_params.reset_seq_no_flag = 1;
3866
3867 cmd->create_params.param_info =
3868 (stream->sta->ht_cap.ampdu_factor &
3869 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3870 ((stream->sta->ht_cap.ampdu_density << 2) &
3871 IEEE80211_HT_AMPDU_PARM_DENSITY);
3872
3873 cmd->create_params.flags =
3874 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3875 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3876
3877 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3878
3879 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3880 stream->sta->addr, stream->tid);
3881 kfree(cmd);
3882
3883 return rc;
3884}
3885
3886static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3887 u8 idx)
3888{
3889 struct mwl8k_cmd_bastream *cmd;
3890
3891 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3892 if (cmd == NULL)
3893 return;
3894
3895 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3896 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3897 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3898
3899 cmd->destroy_params.ba_context = cpu_to_le32(idx);
3900 mwl8k_post_cmd(hw, &cmd->header);
3901
3902 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
3903
3904 kfree(cmd);
3905}
3906
3907/*
3908 * CMD_SET_NEW_STN.
3909 */
3910struct mwl8k_cmd_set_new_stn {
3911 struct mwl8k_cmd_pkt header;
3912 __le16 aid;
3913 __u8 mac_addr[6];
3914 __le16 stn_id;
3915 __le16 action;
3916 __le16 rsvd;
3917 __le32 legacy_rates;
3918 __u8 ht_rates[4];
3919 __le16 cap_info;
3920 __le16 ht_capabilities_info;
3921 __u8 mac_ht_param_info;
3922 __u8 rev;
3923 __u8 control_channel;
3924 __u8 add_channel;
3925 __le16 op_mode;
3926 __le16 stbc;
3927 __u8 add_qos_info;
3928 __u8 is_qos_sta;
3929 __le32 fw_sta_ptr;
3930} __packed;
3931
3932#define MWL8K_STA_ACTION_ADD 0
3933#define MWL8K_STA_ACTION_REMOVE 2
3934
3935static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3936 struct ieee80211_vif *vif,
3937 struct ieee80211_sta *sta)
3938{
3939 struct mwl8k_cmd_set_new_stn *cmd;
3940 u32 rates;
3941 int rc;
3942
3943 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3944 if (cmd == NULL)
3945 return -ENOMEM;
3946
3947 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3948 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3949 cmd->aid = cpu_to_le16(sta->aid);
3950 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3951 cmd->stn_id = cpu_to_le16(sta->aid);
3952 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3953 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3954 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3955 else
3956 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3957 cmd->legacy_rates = cpu_to_le32(rates);
3958 if (sta->ht_cap.ht_supported) {
3959 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3960 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3961 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3962 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3963 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3964 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3965 ((sta->ht_cap.ampdu_density & 7) << 2);
3966 cmd->is_qos_sta = 1;
3967 }
3968
3969 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3970 kfree(cmd);
3971
3972 return rc;
3973}
3974
3975static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3976 struct ieee80211_vif *vif)
3977{
3978 struct mwl8k_cmd_set_new_stn *cmd;
3979 int rc;
3980
3981 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3982 if (cmd == NULL)
3983 return -ENOMEM;
3984
3985 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3986 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3987 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3988
3989 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3990 kfree(cmd);
3991
3992 return rc;
3993}
3994
3995static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3996 struct ieee80211_vif *vif, u8 *addr)
3997{
3998 struct mwl8k_cmd_set_new_stn *cmd;
3999 struct mwl8k_priv *priv = hw->priv;
4000 int rc, i;
4001 u8 idx;
4002
4003 spin_lock(&priv->stream_lock);
4004 /* Destroy any active ampdu streams for this sta */
4005 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4006 struct mwl8k_ampdu_stream *s;
4007 s = &priv->ampdu[i];
4008 if (s->state != AMPDU_NO_STREAM) {
4009 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4010 if (s->state == AMPDU_STREAM_ACTIVE) {
4011 idx = s->idx;
4012 spin_unlock(&priv->stream_lock);
4013 mwl8k_destroy_ba(hw, idx);
4014 spin_lock(&priv->stream_lock);
4015 } else if (s->state == AMPDU_STREAM_NEW) {
4016 mwl8k_remove_stream(hw, s);
4017 }
4018 }
4019 }
4020 }
4021
4022 spin_unlock(&priv->stream_lock);
4023
4024 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4025 if (cmd == NULL)
4026 return -ENOMEM;
4027
4028 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4029 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4030 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4031 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4032
4033 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4034 kfree(cmd);
4035
4036 return rc;
4037}
4038
4039/*
4040 * CMD_UPDATE_ENCRYPTION.
4041 */
4042
4043#define MAX_ENCR_KEY_LENGTH 16
4044#define MIC_KEY_LENGTH 8
4045
4046struct mwl8k_cmd_update_encryption {
4047 struct mwl8k_cmd_pkt header;
4048
4049 __le32 action;
4050 __le32 reserved;
4051 __u8 mac_addr[6];
4052 __u8 encr_type;
4053
4054} __packed;
4055
4056struct mwl8k_cmd_set_key {
4057 struct mwl8k_cmd_pkt header;
4058
4059 __le32 action;
4060 __le32 reserved;
4061 __le16 length;
4062 __le16 key_type_id;
4063 __le32 key_info;
4064 __le32 key_id;
4065 __le16 key_len;
4066 __u8 key_material[MAX_ENCR_KEY_LENGTH];
4067 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4068 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4069 __le16 tkip_rsc_low;
4070 __le32 tkip_rsc_high;
4071 __le16 tkip_tsc_low;
4072 __le32 tkip_tsc_high;
4073 __u8 mac_addr[6];
4074} __packed;
4075
4076enum {
4077 MWL8K_ENCR_ENABLE,
4078 MWL8K_ENCR_SET_KEY,
4079 MWL8K_ENCR_REMOVE_KEY,
4080 MWL8K_ENCR_SET_GROUP_KEY,
4081};
4082
4083#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
4084#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
4085#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
4086#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
4087#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
4088
4089enum {
4090 MWL8K_ALG_WEP,
4091 MWL8K_ALG_TKIP,
4092 MWL8K_ALG_CCMP,
4093};
4094
4095#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
4096#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
4097#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
4098#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
4099#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
4100
4101static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4102 struct ieee80211_vif *vif,
4103 u8 *addr,
4104 u8 encr_type)
4105{
4106 struct mwl8k_cmd_update_encryption *cmd;
4107 int rc;
4108
4109 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4110 if (cmd == NULL)
4111 return -ENOMEM;
4112
4113 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4114 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4115 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4116 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4117 cmd->encr_type = encr_type;
4118
4119 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4120 kfree(cmd);
4121
4122 return rc;
4123}
4124
4125static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4126 u8 *addr,
4127 struct ieee80211_key_conf *key)
4128{
4129 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4130 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4131 cmd->length = cpu_to_le16(sizeof(*cmd) -
4132 offsetof(struct mwl8k_cmd_set_key, length));
4133 cmd->key_id = cpu_to_le32(key->keyidx);
4134 cmd->key_len = cpu_to_le16(key->keylen);
4135 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4136
4137 switch (key->cipher) {
4138 case WLAN_CIPHER_SUITE_WEP40:
4139 case WLAN_CIPHER_SUITE_WEP104:
4140 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4141 if (key->keyidx == 0)
4142 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4143
4144 break;
4145 case WLAN_CIPHER_SUITE_TKIP:
4146 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4147 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4148 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4149 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4150 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4151 | MWL8K_KEY_FLAG_TSC_VALID);
4152 break;
4153 case WLAN_CIPHER_SUITE_CCMP:
4154 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4155 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4156 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4157 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4158 break;
4159 default:
4160 return -ENOTSUPP;
4161 }
4162
4163 return 0;
4164}
4165
4166static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4167 struct ieee80211_vif *vif,
4168 u8 *addr,
4169 struct ieee80211_key_conf *key)
4170{
4171 struct mwl8k_cmd_set_key *cmd;
4172 int rc;
4173 int keymlen;
4174 u32 action;
4175 u8 idx;
4176 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4177
4178 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4179 if (cmd == NULL)
4180 return -ENOMEM;
4181
4182 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4183 if (rc < 0)
4184 goto done;
4185
4186 idx = key->keyidx;
4187
4188 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4189 action = MWL8K_ENCR_SET_KEY;
4190 else
4191 action = MWL8K_ENCR_SET_GROUP_KEY;
4192
4193 switch (key->cipher) {
4194 case WLAN_CIPHER_SUITE_WEP40:
4195 case WLAN_CIPHER_SUITE_WEP104:
4196 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4197 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4198 sizeof(*key) + key->keylen);
4199 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4200 }
4201
4202 keymlen = key->keylen;
4203 action = MWL8K_ENCR_SET_KEY;
4204 break;
4205 case WLAN_CIPHER_SUITE_TKIP:
4206 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4207 break;
4208 case WLAN_CIPHER_SUITE_CCMP:
4209 keymlen = key->keylen;
4210 break;
4211 default:
4212 rc = -ENOTSUPP;
4213 goto done;
4214 }
4215
4216 memcpy(cmd->key_material, key->key, keymlen);
4217 cmd->action = cpu_to_le32(action);
4218
4219 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4220done:
4221 kfree(cmd);
4222
4223 return rc;
4224}
4225
4226static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4227 struct ieee80211_vif *vif,
4228 u8 *addr,
4229 struct ieee80211_key_conf *key)
4230{
4231 struct mwl8k_cmd_set_key *cmd;
4232 int rc;
4233 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4234
4235 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4236 if (cmd == NULL)
4237 return -ENOMEM;
4238
4239 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4240 if (rc < 0)
4241 goto done;
4242
4243 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4244 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4245 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4246
4247 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4248
4249 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4250done:
4251 kfree(cmd);
4252
4253 return rc;
4254}
4255
4256static int mwl8k_set_key(struct ieee80211_hw *hw,
4257 enum set_key_cmd cmd_param,
4258 struct ieee80211_vif *vif,
4259 struct ieee80211_sta *sta,
4260 struct ieee80211_key_conf *key)
4261{
4262 int rc = 0;
4263 u8 encr_type;
4264 u8 *addr;
4265 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4266 struct mwl8k_priv *priv = hw->priv;
4267
4268 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4269 return -EOPNOTSUPP;
4270
4271 if (sta == NULL)
4272 addr = vif->addr;
4273 else
4274 addr = sta->addr;
4275
4276 if (cmd_param == SET_KEY) {
4277 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4278 if (rc)
4279 goto out;
4280
4281 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4282 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4283 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4284 else
4285 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4286
4287 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4288 encr_type);
4289 if (rc)
4290 goto out;
4291
4292 mwl8k_vif->is_hw_crypto_enabled = true;
4293
4294 } else {
4295 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4296
4297 if (rc)
4298 goto out;
4299 }
4300out:
4301 return rc;
4302}
4303
4304/*
4305 * CMD_UPDATE_STADB.
4306 */
4307struct ewc_ht_info {
4308 __le16 control1;
4309 __le16 control2;
4310 __le16 control3;
4311} __packed;
4312
4313struct peer_capability_info {
4314 /* Peer type - AP vs. STA. */
4315 __u8 peer_type;
4316
4317 /* Basic 802.11 capabilities from assoc resp. */
4318 __le16 basic_caps;
4319
4320 /* Set if peer supports 802.11n high throughput (HT). */
4321 __u8 ht_support;
4322
4323 /* Valid if HT is supported. */
4324 __le16 ht_caps;
4325 __u8 extended_ht_caps;
4326 struct ewc_ht_info ewc_info;
4327
4328 /* Legacy rate table. Intersection of our rates and peer rates. */
4329 __u8 legacy_rates[12];
4330
4331 /* HT rate table. Intersection of our rates and peer rates. */
4332 __u8 ht_rates[16];
4333 __u8 pad[16];
4334
4335 /* If set, interoperability mode, no proprietary extensions. */
4336 __u8 interop;
4337 __u8 pad2;
4338 __u8 station_id;
4339 __le16 amsdu_enabled;
4340} __packed;
4341
4342struct mwl8k_cmd_update_stadb {
4343 struct mwl8k_cmd_pkt header;
4344
4345 /* See STADB_ACTION_TYPE */
4346 __le32 action;
4347
4348 /* Peer MAC address */
4349 __u8 peer_addr[ETH_ALEN];
4350
4351 __le32 reserved;
4352
4353 /* Peer info - valid during add/update. */
4354 struct peer_capability_info peer_info;
4355} __packed;
4356
4357#define MWL8K_STA_DB_MODIFY_ENTRY 1
4358#define MWL8K_STA_DB_DEL_ENTRY 2
4359
4360/* Peer Entry flags - used to define the type of the peer node */
4361#define MWL8K_PEER_TYPE_ACCESSPOINT 2
4362
4363static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4364 struct ieee80211_vif *vif,
4365 struct ieee80211_sta *sta)
4366{
4367 struct mwl8k_cmd_update_stadb *cmd;
4368 struct peer_capability_info *p;
4369 u32 rates;
4370 int rc;
4371
4372 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4373 if (cmd == NULL)
4374 return -ENOMEM;
4375
4376 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4377 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4378 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4379 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4380
4381 p = &cmd->peer_info;
4382 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4383 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4384 p->ht_support = sta->ht_cap.ht_supported;
4385 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4386 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4387 ((sta->ht_cap.ampdu_density & 7) << 2);
4388 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4389 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4390 else
4391 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4392 legacy_rate_mask_to_array(p->legacy_rates, rates);
4393 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4394 p->interop = 1;
4395 p->amsdu_enabled = 0;
4396
4397 rc = mwl8k_post_cmd(hw, &cmd->header);
4398 if (!rc)
4399 rc = p->station_id;
4400 kfree(cmd);
4401
4402 return rc;
4403}
4404
4405static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4406 struct ieee80211_vif *vif, u8 *addr)
4407{
4408 struct mwl8k_cmd_update_stadb *cmd;
4409 int rc;
4410
4411 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4412 if (cmd == NULL)
4413 return -ENOMEM;
4414
4415 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4416 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4417 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4418 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4419
4420 rc = mwl8k_post_cmd(hw, &cmd->header);
4421 kfree(cmd);
4422
4423 return rc;
4424}
4425
4426
4427/*
4428 * Interrupt handling.
4429 */
4430static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4431{
4432 struct ieee80211_hw *hw = dev_id;
4433 struct mwl8k_priv *priv = hw->priv;
4434 u32 status;
4435
4436 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4437 if (!status)
4438 return IRQ_NONE;
4439
4440 if (status & MWL8K_A2H_INT_TX_DONE) {
4441 status &= ~MWL8K_A2H_INT_TX_DONE;
4442 tasklet_schedule(&priv->poll_tx_task);
4443 }
4444
4445 if (status & MWL8K_A2H_INT_RX_READY) {
4446 status &= ~MWL8K_A2H_INT_RX_READY;
4447 tasklet_schedule(&priv->poll_rx_task);
4448 }
4449
4450 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4451 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4452 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4453
4454 atomic_inc(&priv->watchdog_event_pending);
4455 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4456 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4457 }
4458
4459 if (status)
4460 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4461
4462 if (status & MWL8K_A2H_INT_OPC_DONE) {
4463 if (priv->hostcmd_wait != NULL)
4464 complete(priv->hostcmd_wait);
4465 }
4466
4467 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4468 if (!mutex_is_locked(&priv->fw_mutex) &&
4469 priv->radio_on && priv->pending_tx_pkts)
4470 mwl8k_tx_start(priv);
4471 }
4472
4473 return IRQ_HANDLED;
4474}
4475
4476static void mwl8k_tx_poll(unsigned long data)
4477{
4478 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4479 struct mwl8k_priv *priv = hw->priv;
4480 int limit;
4481 int i;
4482
4483 limit = 32;
4484
4485 spin_lock_bh(&priv->tx_lock);
4486
4487 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4488 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4489
4490 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4491 complete(priv->tx_wait);
4492 priv->tx_wait = NULL;
4493 }
4494
4495 spin_unlock_bh(&priv->tx_lock);
4496
4497 if (limit) {
4498 writel(~MWL8K_A2H_INT_TX_DONE,
4499 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4500 } else {
4501 tasklet_schedule(&priv->poll_tx_task);
4502 }
4503}
4504
4505static void mwl8k_rx_poll(unsigned long data)
4506{
4507 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4508 struct mwl8k_priv *priv = hw->priv;
4509 int limit;
4510
4511 limit = 32;
4512 limit -= rxq_process(hw, 0, limit);
4513 limit -= rxq_refill(hw, 0, limit);
4514
4515 if (limit) {
4516 writel(~MWL8K_A2H_INT_RX_READY,
4517 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4518 } else {
4519 tasklet_schedule(&priv->poll_rx_task);
4520 }
4521}
4522
4523
4524/*
4525 * Core driver operations.
4526 */
4527static void mwl8k_tx(struct ieee80211_hw *hw,
4528 struct ieee80211_tx_control *control,
4529 struct sk_buff *skb)
4530{
4531 struct mwl8k_priv *priv = hw->priv;
4532 int index = skb_get_queue_mapping(skb);
4533
4534 if (!priv->radio_on) {
4535 wiphy_debug(hw->wiphy,
4536 "dropped TX frame since radio disabled\n");
4537 dev_kfree_skb(skb);
4538 return;
4539 }
4540
4541 mwl8k_txq_xmit(hw, index, control->sta, skb);
4542}
4543
4544static int mwl8k_start(struct ieee80211_hw *hw)
4545{
4546 struct mwl8k_priv *priv = hw->priv;
4547 int rc;
4548
4549 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4550 IRQF_SHARED, MWL8K_NAME, hw);
4551 if (rc) {
4552 priv->irq = -1;
4553 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4554 return -EIO;
4555 }
4556 priv->irq = priv->pdev->irq;
4557
4558 /* Enable TX reclaim and RX tasklets. */
4559 tasklet_enable(&priv->poll_tx_task);
4560 tasklet_enable(&priv->poll_rx_task);
4561
4562 /* Enable interrupts */
4563 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4564 iowrite32(MWL8K_A2H_EVENTS,
4565 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4566
4567 rc = mwl8k_fw_lock(hw);
4568 if (!rc) {
4569 rc = mwl8k_cmd_radio_enable(hw);
4570
4571 if (!priv->ap_fw) {
4572 if (!rc)
4573 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4574
4575 if (!rc)
4576 rc = mwl8k_cmd_set_pre_scan(hw);
4577
4578 if (!rc)
4579 rc = mwl8k_cmd_set_post_scan(hw,
4580 "\x00\x00\x00\x00\x00\x00");
4581 }
4582
4583 if (!rc)
4584 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4585
4586 if (!rc)
4587 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4588
4589 mwl8k_fw_unlock(hw);
4590 }
4591
4592 if (rc) {
4593 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4594 free_irq(priv->pdev->irq, hw);
4595 priv->irq = -1;
4596 tasklet_disable(&priv->poll_tx_task);
4597 tasklet_disable(&priv->poll_rx_task);
4598 } else {
4599 ieee80211_wake_queues(hw);
4600 }
4601
4602 return rc;
4603}
4604
4605static void mwl8k_stop(struct ieee80211_hw *hw)
4606{
4607 struct mwl8k_priv *priv = hw->priv;
4608 int i;
4609
4610 if (!priv->hw_restart_in_progress)
4611 mwl8k_cmd_radio_disable(hw);
4612
4613 ieee80211_stop_queues(hw);
4614
4615 /* Disable interrupts */
4616 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4617 if (priv->irq != -1) {
4618 free_irq(priv->pdev->irq, hw);
4619 priv->irq = -1;
4620 }
4621
4622 /* Stop finalize join worker */
4623 cancel_work_sync(&priv->finalize_join_worker);
4624 cancel_work_sync(&priv->watchdog_ba_handle);
4625 if (priv->beacon_skb != NULL)
4626 dev_kfree_skb(priv->beacon_skb);
4627
4628 /* Stop TX reclaim and RX tasklets. */
4629 tasklet_disable(&priv->poll_tx_task);
4630 tasklet_disable(&priv->poll_rx_task);
4631
4632 /* Return all skbs to mac80211 */
4633 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4634 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4635}
4636
4637static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4638
4639static int mwl8k_add_interface(struct ieee80211_hw *hw,
4640 struct ieee80211_vif *vif)
4641{
4642 struct mwl8k_priv *priv = hw->priv;
4643 struct mwl8k_vif *mwl8k_vif;
4644 u32 macids_supported;
4645 int macid, rc;
4646 struct mwl8k_device_info *di;
4647
4648 /*
4649 * Reject interface creation if sniffer mode is active, as
4650 * STA operation is mutually exclusive with hardware sniffer
4651 * mode. (Sniffer mode is only used on STA firmware.)
4652 */
4653 if (priv->sniffer_enabled) {
4654 wiphy_info(hw->wiphy,
4655 "unable to create STA interface because sniffer mode is enabled\n");
4656 return -EINVAL;
4657 }
4658
4659 di = priv->device_info;
4660 switch (vif->type) {
4661 case NL80211_IFTYPE_AP:
4662 if (!priv->ap_fw && di->fw_image_ap) {
4663 /* we must load the ap fw to meet this request */
4664 if (!list_empty(&priv->vif_list))
4665 return -EBUSY;
4666 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4667 if (rc)
4668 return rc;
4669 }
4670 macids_supported = priv->ap_macids_supported;
4671 break;
4672 case NL80211_IFTYPE_STATION:
4673 if (priv->ap_fw && di->fw_image_sta) {
4674 if (!list_empty(&priv->vif_list)) {
4675 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4676 "Adding STA interface for WDS");
4677 } else {
4678 /* we must load the sta fw to
4679 * meet this request.
4680 */
4681 rc = mwl8k_reload_firmware(hw,
4682 di->fw_image_sta);
4683 if (rc)
4684 return rc;
4685 }
4686 }
4687 macids_supported = priv->sta_macids_supported;
4688 break;
4689 default:
4690 return -EINVAL;
4691 }
4692
4693 macid = ffs(macids_supported & ~priv->macids_used);
4694 if (!macid--)
4695 return -EBUSY;
4696
4697 /* Setup driver private area. */
4698 mwl8k_vif = MWL8K_VIF(vif);
4699 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4700 mwl8k_vif->vif = vif;
4701 mwl8k_vif->macid = macid;
4702 mwl8k_vif->seqno = 0;
4703 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4704 mwl8k_vif->is_hw_crypto_enabled = false;
4705
4706 /* Set the mac address. */
4707 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4708
4709 if (vif->type == NL80211_IFTYPE_AP)
4710 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4711
4712 priv->macids_used |= 1 << mwl8k_vif->macid;
4713 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4714
4715 return 0;
4716}
4717
4718static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4719{
4720 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4721 if (!priv->macids_used)
4722 return;
4723
4724 priv->macids_used &= ~(1 << vif->macid);
4725 list_del(&vif->list);
4726}
4727
4728static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4729 struct ieee80211_vif *vif)
4730{
4731 struct mwl8k_priv *priv = hw->priv;
4732 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4733
4734 if (vif->type == NL80211_IFTYPE_AP)
4735 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4736
4737 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4738
4739 mwl8k_remove_vif(priv, mwl8k_vif);
4740}
4741
4742static void mwl8k_hw_restart_work(struct work_struct *work)
4743{
4744 struct mwl8k_priv *priv =
4745 container_of(work, struct mwl8k_priv, fw_reload);
4746 struct ieee80211_hw *hw = priv->hw;
4747 struct mwl8k_device_info *di;
4748 int rc;
4749
4750 /* If some command is waiting for a response, clear it */
4751 if (priv->hostcmd_wait != NULL) {
4752 complete(priv->hostcmd_wait);
4753 priv->hostcmd_wait = NULL;
4754 }
4755
4756 priv->hw_restart_owner = current;
4757 di = priv->device_info;
4758 mwl8k_fw_lock(hw);
4759
4760 if (priv->ap_fw)
4761 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4762 else
4763 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4764
4765 if (rc)
4766 goto fail;
4767
4768 priv->hw_restart_owner = NULL;
4769 priv->hw_restart_in_progress = false;
4770
4771 /*
4772 * This unlock will wake up the queues and
4773 * also opens the command path for other
4774 * commands
4775 */
4776 mwl8k_fw_unlock(hw);
4777
4778 ieee80211_restart_hw(hw);
4779
4780 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4781
4782 return;
4783fail:
4784 mwl8k_fw_unlock(hw);
4785
4786 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4787}
4788
4789static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4790{
4791 struct ieee80211_conf *conf = &hw->conf;
4792 struct mwl8k_priv *priv = hw->priv;
4793 int rc;
4794
4795 if (conf->flags & IEEE80211_CONF_IDLE) {
4796 mwl8k_cmd_radio_disable(hw);
4797 return 0;
4798 }
4799
4800 rc = mwl8k_fw_lock(hw);
4801 if (rc)
4802 return rc;
4803
4804 rc = mwl8k_cmd_radio_enable(hw);
4805 if (rc)
4806 goto out;
4807
4808 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4809 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4810 if (rc)
4811 goto out;
4812 }
4813
4814 if (conf->power_level > 18)
4815 conf->power_level = 18;
4816
4817 if (priv->ap_fw) {
4818
4819 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4820 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4821 if (rc)
4822 goto out;
4823 }
4824
4825
4826 } else {
4827 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4828 if (rc)
4829 goto out;
4830 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4831 }
4832
4833out:
4834 mwl8k_fw_unlock(hw);
4835
4836 return rc;
4837}
4838
4839static void
4840mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4841 struct ieee80211_bss_conf *info, u32 changed)
4842{
4843 struct mwl8k_priv *priv = hw->priv;
4844 u32 ap_legacy_rates = 0;
4845 u8 ap_mcs_rates[16];
4846 int rc;
4847
4848 if (mwl8k_fw_lock(hw))
4849 return;
4850
4851 /*
4852 * No need to capture a beacon if we're no longer associated.
4853 */
4854 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4855 priv->capture_beacon = false;
4856
4857 /*
4858 * Get the AP's legacy and MCS rates.
4859 */
4860 if (vif->bss_conf.assoc) {
4861 struct ieee80211_sta *ap;
4862
4863 rcu_read_lock();
4864
4865 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4866 if (ap == NULL) {
4867 rcu_read_unlock();
4868 goto out;
4869 }
4870
4871 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4872 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4873 } else {
4874 ap_legacy_rates =
4875 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4876 }
4877 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4878
4879 rcu_read_unlock();
4880 }
4881
4882 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
4883 !priv->ap_fw) {
4884 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4885 if (rc)
4886 goto out;
4887
4888 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4889 if (rc)
4890 goto out;
4891 } else {
4892 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
4893 priv->ap_fw) {
4894 int idx;
4895 int rate;
4896
4897 /* Use AP firmware specific rate command.
4898 */
4899 idx = ffs(vif->bss_conf.basic_rates);
4900 if (idx)
4901 idx--;
4902
4903 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4904 rate = mwl8k_rates_24[idx].hw_value;
4905 else
4906 rate = mwl8k_rates_50[idx].hw_value;
4907
4908 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4909 }
4910 }
4911
4912 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4913 rc = mwl8k_set_radio_preamble(hw,
4914 vif->bss_conf.use_short_preamble);
4915 if (rc)
4916 goto out;
4917 }
4918
4919 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
4920 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4921 if (rc)
4922 goto out;
4923 }
4924
4925 if (vif->bss_conf.assoc && !priv->ap_fw &&
4926 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4927 BSS_CHANGED_HT))) {
4928 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4929 if (rc)
4930 goto out;
4931 }
4932
4933 if (vif->bss_conf.assoc &&
4934 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4935 /*
4936 * Finalize the join. Tell rx handler to process
4937 * next beacon from our BSSID.
4938 */
4939 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4940 priv->capture_beacon = true;
4941 }
4942
4943out:
4944 mwl8k_fw_unlock(hw);
4945}
4946
4947static void
4948mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4949 struct ieee80211_bss_conf *info, u32 changed)
4950{
4951 int rc;
4952
4953 if (mwl8k_fw_lock(hw))
4954 return;
4955
4956 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4957 rc = mwl8k_set_radio_preamble(hw,
4958 vif->bss_conf.use_short_preamble);
4959 if (rc)
4960 goto out;
4961 }
4962
4963 if (changed & BSS_CHANGED_BASIC_RATES) {
4964 int idx;
4965 int rate;
4966
4967 /*
4968 * Use lowest supported basic rate for multicasts
4969 * and management frames (such as probe responses --
4970 * beacons will always go out at 1 Mb/s).
4971 */
4972 idx = ffs(vif->bss_conf.basic_rates);
4973 if (idx)
4974 idx--;
4975
4976 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4977 rate = mwl8k_rates_24[idx].hw_value;
4978 else
4979 rate = mwl8k_rates_50[idx].hw_value;
4980
4981 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4982 }
4983
4984 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4985 struct sk_buff *skb;
4986
4987 skb = ieee80211_beacon_get(hw, vif);
4988 if (skb != NULL) {
4989 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4990 kfree_skb(skb);
4991 }
4992 }
4993
4994 if (changed & BSS_CHANGED_BEACON_ENABLED)
4995 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4996
4997out:
4998 mwl8k_fw_unlock(hw);
4999}
5000
5001static void
5002mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5003 struct ieee80211_bss_conf *info, u32 changed)
5004{
5005 if (vif->type == NL80211_IFTYPE_STATION)
5006 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5007 if (vif->type == NL80211_IFTYPE_AP)
5008 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5009}
5010
5011static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5012 struct netdev_hw_addr_list *mc_list)
5013{
5014 struct mwl8k_cmd_pkt *cmd;
5015
5016 /*
5017 * Synthesize and return a command packet that programs the
5018 * hardware multicast address filter. At this point we don't
5019 * know whether FIF_ALLMULTI is being requested, but if it is,
5020 * we'll end up throwing this packet away and creating a new
5021 * one in mwl8k_configure_filter().
5022 */
5023 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5024
5025 return (unsigned long)cmd;
5026}
5027
5028static int
5029mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5030 unsigned int changed_flags,
5031 unsigned int *total_flags)
5032{
5033 struct mwl8k_priv *priv = hw->priv;
5034
5035 /*
5036 * Hardware sniffer mode is mutually exclusive with STA
5037 * operation, so refuse to enable sniffer mode if a STA
5038 * interface is active.
5039 */
5040 if (!list_empty(&priv->vif_list)) {
5041 if (net_ratelimit())
5042 wiphy_info(hw->wiphy,
5043 "not enabling sniffer mode because STA interface is active\n");
5044 return 0;
5045 }
5046
5047 if (!priv->sniffer_enabled) {
5048 if (mwl8k_cmd_enable_sniffer(hw, 1))
5049 return 0;
5050 priv->sniffer_enabled = true;
5051 }
5052
5053 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
5054 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5055 FIF_OTHER_BSS;
5056
5057 return 1;
5058}
5059
5060static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5061{
5062 if (!list_empty(&priv->vif_list))
5063 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5064
5065 return NULL;
5066}
5067
5068static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5069 unsigned int changed_flags,
5070 unsigned int *total_flags,
5071 u64 multicast)
5072{
5073 struct mwl8k_priv *priv = hw->priv;
5074 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5075
5076 /*
5077 * AP firmware doesn't allow fine-grained control over
5078 * the receive filter.
5079 */
5080 if (priv->ap_fw) {
5081 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5082 kfree(cmd);
5083 return;
5084 }
5085
5086 /*
5087 * Enable hardware sniffer mode if FIF_CONTROL or
5088 * FIF_OTHER_BSS is requested.
5089 */
5090 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5091 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5092 kfree(cmd);
5093 return;
5094 }
5095
5096 /* Clear unsupported feature flags */
5097 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5098
5099 if (mwl8k_fw_lock(hw)) {
5100 kfree(cmd);
5101 return;
5102 }
5103
5104 if (priv->sniffer_enabled) {
5105 mwl8k_cmd_enable_sniffer(hw, 0);
5106 priv->sniffer_enabled = false;
5107 }
5108
5109 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5110 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5111 /*
5112 * Disable the BSS filter.
5113 */
5114 mwl8k_cmd_set_pre_scan(hw);
5115 } else {
5116 struct mwl8k_vif *mwl8k_vif;
5117 const u8 *bssid;
5118
5119 /*
5120 * Enable the BSS filter.
5121 *
5122 * If there is an active STA interface, use that
5123 * interface's BSSID, otherwise use a dummy one
5124 * (where the OUI part needs to be nonzero for
5125 * the BSSID to be accepted by POST_SCAN).
5126 */
5127 mwl8k_vif = mwl8k_first_vif(priv);
5128 if (mwl8k_vif != NULL)
5129 bssid = mwl8k_vif->vif->bss_conf.bssid;
5130 else
5131 bssid = "\x01\x00\x00\x00\x00\x00";
5132
5133 mwl8k_cmd_set_post_scan(hw, bssid);
5134 }
5135 }
5136
5137 /*
5138 * If FIF_ALLMULTI is being requested, throw away the command
5139 * packet that ->prepare_multicast() built and replace it with
5140 * a command packet that enables reception of all multicast
5141 * packets.
5142 */
5143 if (*total_flags & FIF_ALLMULTI) {
5144 kfree(cmd);
5145 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5146 }
5147
5148 if (cmd != NULL) {
5149 mwl8k_post_cmd(hw, cmd);
5150 kfree(cmd);
5151 }
5152
5153 mwl8k_fw_unlock(hw);
5154}
5155
5156static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5157{
5158 return mwl8k_cmd_set_rts_threshold(hw, value);
5159}
5160
5161static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5162 struct ieee80211_vif *vif,
5163 struct ieee80211_sta *sta)
5164{
5165 struct mwl8k_priv *priv = hw->priv;
5166
5167 if (priv->ap_fw)
5168 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5169 else
5170 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5171}
5172
5173static int mwl8k_sta_add(struct ieee80211_hw *hw,
5174 struct ieee80211_vif *vif,
5175 struct ieee80211_sta *sta)
5176{
5177 struct mwl8k_priv *priv = hw->priv;
5178 int ret;
5179 int i;
5180 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5181 struct ieee80211_key_conf *key;
5182
5183 if (!priv->ap_fw) {
5184 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5185 if (ret >= 0) {
5186 MWL8K_STA(sta)->peer_id = ret;
5187 if (sta->ht_cap.ht_supported)
5188 MWL8K_STA(sta)->is_ampdu_allowed = true;
5189 ret = 0;
5190 }
5191
5192 } else {
5193 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5194 }
5195
5196 for (i = 0; i < NUM_WEP_KEYS; i++) {
5197 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5198 if (mwl8k_vif->wep_key_conf[i].enabled)
5199 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5200 }
5201 return ret;
5202}
5203
5204static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5205 struct ieee80211_vif *vif, u16 queue,
5206 const struct ieee80211_tx_queue_params *params)
5207{
5208 struct mwl8k_priv *priv = hw->priv;
5209 int rc;
5210
5211 rc = mwl8k_fw_lock(hw);
5212 if (!rc) {
5213 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5214 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5215
5216 if (!priv->wmm_enabled)
5217 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5218
5219 if (!rc) {
5220 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5221 rc = mwl8k_cmd_set_edca_params(hw, q,
5222 params->cw_min,
5223 params->cw_max,
5224 params->aifs,
5225 params->txop);
5226 }
5227
5228 mwl8k_fw_unlock(hw);
5229 }
5230
5231 return rc;
5232}
5233
5234static int mwl8k_get_stats(struct ieee80211_hw *hw,
5235 struct ieee80211_low_level_stats *stats)
5236{
5237 return mwl8k_cmd_get_stat(hw, stats);
5238}
5239
5240static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5241 struct survey_info *survey)
5242{
5243 struct mwl8k_priv *priv = hw->priv;
5244 struct ieee80211_conf *conf = &hw->conf;
5245
5246 if (idx != 0)
5247 return -ENOENT;
5248
5249 survey->channel = conf->channel;
5250 survey->filled = SURVEY_INFO_NOISE_DBM;
5251 survey->noise = priv->noise;
5252
5253 return 0;
5254}
5255
5256#define MAX_AMPDU_ATTEMPTS 5
5257
5258static int
5259mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5260 enum ieee80211_ampdu_mlme_action action,
5261 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5262 u8 buf_size)
5263{
5264
5265 int i, rc = 0;
5266 struct mwl8k_priv *priv = hw->priv;
5267 struct mwl8k_ampdu_stream *stream;
5268 u8 *addr = sta->addr, idx;
5269 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5270
5271 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5272 return -ENOTSUPP;
5273
5274 spin_lock(&priv->stream_lock);
5275 stream = mwl8k_lookup_stream(hw, addr, tid);
5276
5277 switch (action) {
5278 case IEEE80211_AMPDU_RX_START:
5279 case IEEE80211_AMPDU_RX_STOP:
5280 break;
5281 case IEEE80211_AMPDU_TX_START:
5282 /* By the time we get here the hw queues may contain outgoing
5283 * packets for this RA/TID that are not part of this BA
5284 * session. The hw will assign sequence numbers to these
5285 * packets as they go out. So if we query the hw for its next
5286 * sequence number and use that for the SSN here, it may end up
5287 * being wrong, which will lead to sequence number mismatch at
5288 * the recipient. To avoid this, we reset the sequence number
5289 * to O for the first MPDU in this BA stream.
5290 */
5291 *ssn = 0;
5292 if (stream == NULL) {
5293 /* This means that somebody outside this driver called
5294 * ieee80211_start_tx_ba_session. This is unexpected
5295 * because we do our own rate control. Just warn and
5296 * move on.
5297 */
5298 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5299 "Proceeding anyway.\n", __func__);
5300 stream = mwl8k_add_stream(hw, sta, tid);
5301 }
5302 if (stream == NULL) {
5303 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5304 rc = -EBUSY;
5305 break;
5306 }
5307 stream->state = AMPDU_STREAM_IN_PROGRESS;
5308
5309 /* Release the lock before we do the time consuming stuff */
5310 spin_unlock(&priv->stream_lock);
5311 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5312
5313 /* Check if link is still valid */
5314 if (!sta_info->is_ampdu_allowed) {
5315 spin_lock(&priv->stream_lock);
5316 mwl8k_remove_stream(hw, stream);
5317 spin_unlock(&priv->stream_lock);
5318 return -EBUSY;
5319 }
5320
5321 rc = mwl8k_check_ba(hw, stream, vif);
5322
5323 /* If HW restart is in progress mwl8k_post_cmd will
5324 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5325 * such cases
5326 */
5327 if (!rc || rc == -EBUSY)
5328 break;
5329 /*
5330 * HW queues take time to be flushed, give them
5331 * sufficient time
5332 */
5333
5334 msleep(1000);
5335 }
5336 spin_lock(&priv->stream_lock);
5337 if (rc) {
5338 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5339 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5340 mwl8k_remove_stream(hw, stream);
5341 rc = -EBUSY;
5342 break;
5343 }
5344 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5345 break;
5346 case IEEE80211_AMPDU_TX_STOP_CONT:
5347 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5348 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5349 if (stream) {
5350 if (stream->state == AMPDU_STREAM_ACTIVE) {
5351 idx = stream->idx;
5352 spin_unlock(&priv->stream_lock);
5353 mwl8k_destroy_ba(hw, idx);
5354 spin_lock(&priv->stream_lock);
5355 }
5356 mwl8k_remove_stream(hw, stream);
5357 }
5358 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5359 break;
5360 case IEEE80211_AMPDU_TX_OPERATIONAL:
5361 BUG_ON(stream == NULL);
5362 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5363 spin_unlock(&priv->stream_lock);
5364 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5365 spin_lock(&priv->stream_lock);
5366 if (!rc)
5367 stream->state = AMPDU_STREAM_ACTIVE;
5368 else {
5369 idx = stream->idx;
5370 spin_unlock(&priv->stream_lock);
5371 mwl8k_destroy_ba(hw, idx);
5372 spin_lock(&priv->stream_lock);
5373 wiphy_debug(hw->wiphy,
5374 "Failed adding stream for sta %pM tid %d\n",
5375 addr, tid);
5376 mwl8k_remove_stream(hw, stream);
5377 }
5378 break;
5379
5380 default:
5381 rc = -ENOTSUPP;
5382 }
5383
5384 spin_unlock(&priv->stream_lock);
5385 return rc;
5386}
5387
5388static const struct ieee80211_ops mwl8k_ops = {
5389 .tx = mwl8k_tx,
5390 .start = mwl8k_start,
5391 .stop = mwl8k_stop,
5392 .add_interface = mwl8k_add_interface,
5393 .remove_interface = mwl8k_remove_interface,
5394 .config = mwl8k_config,
5395 .bss_info_changed = mwl8k_bss_info_changed,
5396 .prepare_multicast = mwl8k_prepare_multicast,
5397 .configure_filter = mwl8k_configure_filter,
5398 .set_key = mwl8k_set_key,
5399 .set_rts_threshold = mwl8k_set_rts_threshold,
5400 .sta_add = mwl8k_sta_add,
5401 .sta_remove = mwl8k_sta_remove,
5402 .conf_tx = mwl8k_conf_tx,
5403 .get_stats = mwl8k_get_stats,
5404 .get_survey = mwl8k_get_survey,
5405 .ampdu_action = mwl8k_ampdu_action,
5406};
5407
5408static void mwl8k_finalize_join_worker(struct work_struct *work)
5409{
5410 struct mwl8k_priv *priv =
5411 container_of(work, struct mwl8k_priv, finalize_join_worker);
5412 struct sk_buff *skb = priv->beacon_skb;
5413 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5414 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5415 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5416 mgmt->u.beacon.variable, len);
5417 int dtim_period = 1;
5418
5419 if (tim && tim[1] >= 2)
5420 dtim_period = tim[3];
5421
5422 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5423
5424 dev_kfree_skb(skb);
5425 priv->beacon_skb = NULL;
5426}
5427
5428enum {
5429 MWL8363 = 0,
5430 MWL8687,
5431 MWL8366,
5432};
5433
5434#define MWL8K_8366_AP_FW_API 3
5435#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5436#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5437
5438static struct mwl8k_device_info mwl8k_info_tbl[] = {
5439 [MWL8363] = {
5440 .part_name = "88w8363",
5441 .helper_image = "mwl8k/helper_8363.fw",
5442 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5443 },
5444 [MWL8687] = {
5445 .part_name = "88w8687",
5446 .helper_image = "mwl8k/helper_8687.fw",
5447 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5448 },
5449 [MWL8366] = {
5450 .part_name = "88w8366",
5451 .helper_image = "mwl8k/helper_8366.fw",
5452 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5453 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5454 .fw_api_ap = MWL8K_8366_AP_FW_API,
5455 .ap_rxd_ops = &rxd_8366_ap_ops,
5456 },
5457};
5458
5459MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5460MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5461MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5462MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5463MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5464MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5465MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5466
5467static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5468 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5469 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5470 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5471 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5472 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5473 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5474 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5475 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5476 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5477 { },
5478};
5479MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5480
5481static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5482{
5483 int rc;
5484 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5485 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5486 priv->fw_pref, priv->fw_alt);
5487 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5488 if (rc) {
5489 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5490 pci_name(priv->pdev), priv->fw_alt);
5491 return rc;
5492 }
5493 return 0;
5494}
5495
5496static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5497static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5498{
5499 struct mwl8k_priv *priv = context;
5500 struct mwl8k_device_info *di = priv->device_info;
5501 int rc;
5502
5503 switch (priv->fw_state) {
5504 case FW_STATE_INIT:
5505 if (!fw) {
5506 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5507 pci_name(priv->pdev), di->helper_image);
5508 goto fail;
5509 }
5510 priv->fw_helper = fw;
5511 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5512 true);
5513 if (rc && priv->fw_alt) {
5514 rc = mwl8k_request_alt_fw(priv);
5515 if (rc)
5516 goto fail;
5517 priv->fw_state = FW_STATE_LOADING_ALT;
5518 } else if (rc)
5519 goto fail;
5520 else
5521 priv->fw_state = FW_STATE_LOADING_PREF;
5522 break;
5523
5524 case FW_STATE_LOADING_PREF:
5525 if (!fw) {
5526 if (priv->fw_alt) {
5527 rc = mwl8k_request_alt_fw(priv);
5528 if (rc)
5529 goto fail;
5530 priv->fw_state = FW_STATE_LOADING_ALT;
5531 } else
5532 goto fail;
5533 } else {
5534 priv->fw_ucode = fw;
5535 rc = mwl8k_firmware_load_success(priv);
5536 if (rc)
5537 goto fail;
5538 else
5539 complete(&priv->firmware_loading_complete);
5540 }
5541 break;
5542
5543 case FW_STATE_LOADING_ALT:
5544 if (!fw) {
5545 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5546 pci_name(priv->pdev), di->helper_image);
5547 goto fail;
5548 }
5549 priv->fw_ucode = fw;
5550 rc = mwl8k_firmware_load_success(priv);
5551 if (rc)
5552 goto fail;
5553 else
5554 complete(&priv->firmware_loading_complete);
5555 break;
5556
5557 default:
5558 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5559 MWL8K_NAME, priv->fw_state);
5560 BUG_ON(1);
5561 }
5562
5563 return;
5564
5565fail:
5566 priv->fw_state = FW_STATE_ERROR;
5567 complete(&priv->firmware_loading_complete);
5568 device_release_driver(&priv->pdev->dev);
5569 mwl8k_release_firmware(priv);
5570}
5571
5572#define MAX_RESTART_ATTEMPTS 1
5573static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5574 bool nowait)
5575{
5576 struct mwl8k_priv *priv = hw->priv;
5577 int rc;
5578 int count = MAX_RESTART_ATTEMPTS;
5579
5580retry:
5581 /* Reset firmware and hardware */
5582 mwl8k_hw_reset(priv);
5583
5584 /* Ask userland hotplug daemon for the device firmware */
5585 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5586 if (rc) {
5587 wiphy_err(hw->wiphy, "Firmware files not found\n");
5588 return rc;
5589 }
5590
5591 if (nowait)
5592 return rc;
5593
5594 /* Load firmware into hardware */
5595 rc = mwl8k_load_firmware(hw);
5596 if (rc)
5597 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5598
5599 /* Reclaim memory once firmware is successfully loaded */
5600 mwl8k_release_firmware(priv);
5601
5602 if (rc && count) {
5603 /* FW did not start successfully;
5604 * lets try one more time
5605 */
5606 count--;
5607 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5608 msleep(20);
5609 goto retry;
5610 }
5611
5612 return rc;
5613}
5614
5615static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5616{
5617 struct mwl8k_priv *priv = hw->priv;
5618 int rc = 0;
5619 int i;
5620
5621 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5622 rc = mwl8k_txq_init(hw, i);
5623 if (rc)
5624 break;
5625 if (priv->ap_fw)
5626 iowrite32(priv->txq[i].txd_dma,
5627 priv->sram + priv->txq_offset[i]);
5628 }
5629 return rc;
5630}
5631
5632/* initialize hw after successfully loading a firmware image */
5633static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5634{
5635 struct mwl8k_priv *priv = hw->priv;
5636 int rc = 0;
5637 int i;
5638
5639 if (priv->ap_fw) {
5640 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5641 if (priv->rxd_ops == NULL) {
5642 wiphy_err(hw->wiphy,
5643 "Driver does not have AP firmware image support for this hardware\n");
5644 rc = -ENOENT;
5645 goto err_stop_firmware;
5646 }
5647 } else {
5648 priv->rxd_ops = &rxd_sta_ops;
5649 }
5650
5651 priv->sniffer_enabled = false;
5652 priv->wmm_enabled = false;
5653 priv->pending_tx_pkts = 0;
5654 atomic_set(&priv->watchdog_event_pending, 0);
5655
5656 rc = mwl8k_rxq_init(hw, 0);
5657 if (rc)
5658 goto err_stop_firmware;
5659 rxq_refill(hw, 0, INT_MAX);
5660
5661 /* For the sta firmware, we need to know the dma addresses of tx queues
5662 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5663 * prior to issuing this command. But for the AP case, we learn the
5664 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5665 * case we must initialize the tx queues after.
5666 */
5667 priv->num_ampdu_queues = 0;
5668 if (!priv->ap_fw) {
5669 rc = mwl8k_init_txqs(hw);
5670 if (rc)
5671 goto err_free_queues;
5672 }
5673
5674 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5675 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5676 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5677 MWL8K_A2H_INT_BA_WATCHDOG,
5678 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5679 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5680 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5681
5682 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5683 IRQF_SHARED, MWL8K_NAME, hw);
5684 if (rc) {
5685 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5686 goto err_free_queues;
5687 }
5688
5689 /*
5690 * When hw restart is requested,
5691 * mac80211 will take care of clearing
5692 * the ampdu streams, so do not clear
5693 * the ampdu state here
5694 */
5695 if (!priv->hw_restart_in_progress)
5696 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5697
5698 /*
5699 * Temporarily enable interrupts. Initial firmware host
5700 * commands use interrupts and avoid polling. Disable
5701 * interrupts when done.
5702 */
5703 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5704
5705 /* Get config data, mac addrs etc */
5706 if (priv->ap_fw) {
5707 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5708 if (!rc)
5709 rc = mwl8k_init_txqs(hw);
5710 if (!rc)
5711 rc = mwl8k_cmd_set_hw_spec(hw);
5712 } else {
5713 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5714 }
5715 if (rc) {
5716 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5717 goto err_free_irq;
5718 }
5719
5720 /* Turn radio off */
5721 rc = mwl8k_cmd_radio_disable(hw);
5722 if (rc) {
5723 wiphy_err(hw->wiphy, "Cannot disable\n");
5724 goto err_free_irq;
5725 }
5726
5727 /* Clear MAC address */
5728 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5729 if (rc) {
5730 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5731 goto err_free_irq;
5732 }
5733
5734 /* Configure Antennas */
5735 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5736 if (rc)
5737 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5738 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5739 if (rc)
5740 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5741
5742
5743 /* Disable interrupts */
5744 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5745 free_irq(priv->pdev->irq, hw);
5746
5747 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5748 priv->device_info->part_name,
5749 priv->hw_rev, hw->wiphy->perm_addr,
5750 priv->ap_fw ? "AP" : "STA",
5751 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5752 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5753
5754 return 0;
5755
5756err_free_irq:
5757 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5758 free_irq(priv->pdev->irq, hw);
5759
5760err_free_queues:
5761 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5762 mwl8k_txq_deinit(hw, i);
5763 mwl8k_rxq_deinit(hw, 0);
5764
5765err_stop_firmware:
5766 mwl8k_hw_reset(priv);
5767
5768 return rc;
5769}
5770
5771/*
5772 * invoke mwl8k_reload_firmware to change the firmware image after the device
5773 * has already been registered
5774 */
5775static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5776{
5777 int i, rc = 0;
5778 struct mwl8k_priv *priv = hw->priv;
5779 struct mwl8k_vif *vif, *tmp_vif;
5780
5781 mwl8k_stop(hw);
5782 mwl8k_rxq_deinit(hw, 0);
5783
5784 /*
5785 * All the existing interfaces are re-added by the ieee80211_reconfig;
5786 * which means driver should remove existing interfaces before calling
5787 * ieee80211_restart_hw
5788 */
5789 if (priv->hw_restart_in_progress)
5790 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5791 mwl8k_remove_vif(priv, vif);
5792
5793 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5794 mwl8k_txq_deinit(hw, i);
5795
5796 rc = mwl8k_init_firmware(hw, fw_image, false);
5797 if (rc)
5798 goto fail;
5799
5800 rc = mwl8k_probe_hw(hw);
5801 if (rc)
5802 goto fail;
5803
5804 if (priv->hw_restart_in_progress)
5805 return rc;
5806
5807 rc = mwl8k_start(hw);
5808 if (rc)
5809 goto fail;
5810
5811 rc = mwl8k_config(hw, ~0);
5812 if (rc)
5813 goto fail;
5814
5815 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5816 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5817 if (rc)
5818 goto fail;
5819 }
5820
5821 return rc;
5822
5823fail:
5824 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5825 return rc;
5826}
5827
5828static const struct ieee80211_iface_limit ap_if_limits[] = {
5829 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
5830 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
5831};
5832
5833static const struct ieee80211_iface_combination ap_if_comb = {
5834 .limits = ap_if_limits,
5835 .n_limits = ARRAY_SIZE(ap_if_limits),
5836 .max_interfaces = 8,
5837 .num_different_channels = 1,
5838};
5839
5840
5841static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5842{
5843 struct ieee80211_hw *hw = priv->hw;
5844 int i, rc;
5845
5846 rc = mwl8k_load_firmware(hw);
5847 mwl8k_release_firmware(priv);
5848 if (rc) {
5849 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5850 return rc;
5851 }
5852
5853 /*
5854 * Extra headroom is the size of the required DMA header
5855 * minus the size of the smallest 802.11 frame (CTS frame).
5856 */
5857 hw->extra_tx_headroom =
5858 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5859
5860 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5861
5862 hw->channel_change_time = 10;
5863
5864 hw->queues = MWL8K_TX_WMM_QUEUES;
5865
5866 /* Set rssi values to dBm */
5867 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5868
5869 /*
5870 * Ask mac80211 to not to trigger PS mode
5871 * based on PM bit of incoming frames.
5872 */
5873 if (priv->ap_fw)
5874 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5875
5876 hw->vif_data_size = sizeof(struct mwl8k_vif);
5877 hw->sta_data_size = sizeof(struct mwl8k_sta);
5878
5879 priv->macids_used = 0;
5880 INIT_LIST_HEAD(&priv->vif_list);
5881
5882 /* Set default radio state and preamble */
5883 priv->radio_on = false;
5884 priv->radio_short_preamble = false;
5885
5886 /* Finalize join worker */
5887 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5888 /* Handle watchdog ba events */
5889 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5890 /* To reload the firmware if it crashes */
5891 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5892
5893 /* TX reclaim and RX tasklets. */
5894 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5895 tasklet_disable(&priv->poll_tx_task);
5896 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5897 tasklet_disable(&priv->poll_rx_task);
5898
5899 /* Power management cookie */
5900 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5901 if (priv->cookie == NULL)
5902 return -ENOMEM;
5903
5904 mutex_init(&priv->fw_mutex);
5905 priv->fw_mutex_owner = NULL;
5906 priv->fw_mutex_depth = 0;
5907 priv->hostcmd_wait = NULL;
5908
5909 spin_lock_init(&priv->tx_lock);
5910
5911 spin_lock_init(&priv->stream_lock);
5912
5913 priv->tx_wait = NULL;
5914
5915 rc = mwl8k_probe_hw(hw);
5916 if (rc)
5917 goto err_free_cookie;
5918
5919 hw->wiphy->interface_modes = 0;
5920
5921 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5922 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5923 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5924 hw->wiphy->iface_combinations = &ap_if_comb;
5925 hw->wiphy->n_iface_combinations = 1;
5926 }
5927
5928 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5929 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5930
5931 rc = ieee80211_register_hw(hw);
5932 if (rc) {
5933 wiphy_err(hw->wiphy, "Cannot register device\n");
5934 goto err_unprobe_hw;
5935 }
5936
5937 return 0;
5938
5939err_unprobe_hw:
5940 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5941 mwl8k_txq_deinit(hw, i);
5942 mwl8k_rxq_deinit(hw, 0);
5943
5944err_free_cookie:
5945 if (priv->cookie != NULL)
5946 pci_free_consistent(priv->pdev, 4,
5947 priv->cookie, priv->cookie_dma);
5948
5949 return rc;
5950}
5951static int mwl8k_probe(struct pci_dev *pdev,
5952 const struct pci_device_id *id)
5953{
5954 static int printed_version;
5955 struct ieee80211_hw *hw;
5956 struct mwl8k_priv *priv;
5957 struct mwl8k_device_info *di;
5958 int rc;
5959
5960 if (!printed_version) {
5961 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5962 printed_version = 1;
5963 }
5964
5965
5966 rc = pci_enable_device(pdev);
5967 if (rc) {
5968 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5969 MWL8K_NAME);
5970 return rc;
5971 }
5972
5973 rc = pci_request_regions(pdev, MWL8K_NAME);
5974 if (rc) {
5975 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5976 MWL8K_NAME);
5977 goto err_disable_device;
5978 }
5979
5980 pci_set_master(pdev);
5981
5982
5983 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5984 if (hw == NULL) {
5985 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5986 rc = -ENOMEM;
5987 goto err_free_reg;
5988 }
5989
5990 SET_IEEE80211_DEV(hw, &pdev->dev);
5991 pci_set_drvdata(pdev, hw);
5992
5993 priv = hw->priv;
5994 priv->hw = hw;
5995 priv->pdev = pdev;
5996 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5997
5998
5999 priv->sram = pci_iomap(pdev, 0, 0x10000);
6000 if (priv->sram == NULL) {
6001 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6002 rc = -EIO;
6003 goto err_iounmap;
6004 }
6005
6006 /*
6007 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6008 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6009 */
6010 priv->regs = pci_iomap(pdev, 1, 0x10000);
6011 if (priv->regs == NULL) {
6012 priv->regs = pci_iomap(pdev, 2, 0x10000);
6013 if (priv->regs == NULL) {
6014 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6015 rc = -EIO;
6016 goto err_iounmap;
6017 }
6018 }
6019
6020 /*
6021 * Choose the initial fw image depending on user input. If a second
6022 * image is available, make it the alternative image that will be
6023 * loaded if the first one fails.
6024 */
6025 init_completion(&priv->firmware_loading_complete);
6026 di = priv->device_info;
6027 if (ap_mode_default && di->fw_image_ap) {
6028 priv->fw_pref = di->fw_image_ap;
6029 priv->fw_alt = di->fw_image_sta;
6030 } else if (!ap_mode_default && di->fw_image_sta) {
6031 priv->fw_pref = di->fw_image_sta;
6032 priv->fw_alt = di->fw_image_ap;
6033 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6034 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6035 priv->fw_pref = di->fw_image_sta;
6036 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6037 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6038 priv->fw_pref = di->fw_image_ap;
6039 }
6040 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6041 if (rc)
6042 goto err_stop_firmware;
6043
6044 priv->hw_restart_in_progress = false;
6045
6046 priv->running_bsses = 0;
6047
6048 return rc;
6049
6050err_stop_firmware:
6051 mwl8k_hw_reset(priv);
6052
6053err_iounmap:
6054 if (priv->regs != NULL)
6055 pci_iounmap(pdev, priv->regs);
6056
6057 if (priv->sram != NULL)
6058 pci_iounmap(pdev, priv->sram);
6059
6060 pci_set_drvdata(pdev, NULL);
6061 ieee80211_free_hw(hw);
6062
6063err_free_reg:
6064 pci_release_regions(pdev);
6065
6066err_disable_device:
6067 pci_disable_device(pdev);
6068
6069 return rc;
6070}
6071
6072static void mwl8k_remove(struct pci_dev *pdev)
6073{
6074 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6075 struct mwl8k_priv *priv;
6076 int i;
6077
6078 if (hw == NULL)
6079 return;
6080 priv = hw->priv;
6081
6082 wait_for_completion(&priv->firmware_loading_complete);
6083
6084 if (priv->fw_state == FW_STATE_ERROR) {
6085 mwl8k_hw_reset(priv);
6086 goto unmap;
6087 }
6088
6089 ieee80211_stop_queues(hw);
6090
6091 ieee80211_unregister_hw(hw);
6092
6093 /* Remove TX reclaim and RX tasklets. */
6094 tasklet_kill(&priv->poll_tx_task);
6095 tasklet_kill(&priv->poll_rx_task);
6096
6097 /* Stop hardware */
6098 mwl8k_hw_reset(priv);
6099
6100 /* Return all skbs to mac80211 */
6101 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6102 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6103
6104 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6105 mwl8k_txq_deinit(hw, i);
6106
6107 mwl8k_rxq_deinit(hw, 0);
6108
6109 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6110
6111unmap:
6112 pci_iounmap(pdev, priv->regs);
6113 pci_iounmap(pdev, priv->sram);
6114 pci_set_drvdata(pdev, NULL);
6115 ieee80211_free_hw(hw);
6116 pci_release_regions(pdev);
6117 pci_disable_device(pdev);
6118}
6119
6120static struct pci_driver mwl8k_driver = {
6121 .name = MWL8K_NAME,
6122 .id_table = mwl8k_pci_id_table,
6123 .probe = mwl8k_probe,
6124 .remove = mwl8k_remove,
6125};
6126
6127module_pci_driver(mwl8k_driver);
6128
6129MODULE_DESCRIPTION(MWL8K_DESC);
6130MODULE_VERSION(MWL8K_VERSION);
6131MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6132MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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