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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/interrupt.h>
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/sched.h>
16#include <linux/spinlock.h>
17#include <linux/list.h>
18#include <linux/pci.h>
19#include <linux/delay.h>
20#include <linux/completion.h>
21#include <linux/etherdevice.h>
22#include <linux/slab.h>
23#include <net/mac80211.h>
24#include <linux/moduleparam.h>
25#include <linux/firmware.h>
26#include <linux/workqueue.h>
27
28#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29#define MWL8K_NAME KBUILD_MODNAME
30#define MWL8K_VERSION "0.13"
31
32/* Module parameters */
33static bool ap_mode_default;
34module_param(ap_mode_default, bool, 0);
35MODULE_PARM_DESC(ap_mode_default,
36 "Set to 1 to make ap mode the default instead of sta mode");
37
38/* Register definitions */
39#define MWL8K_HIU_GEN_PTR 0x00000c10
40#define MWL8K_MODE_STA 0x0000005a
41#define MWL8K_MODE_AP 0x000000a5
42#define MWL8K_HIU_INT_CODE 0x00000c14
43#define MWL8K_FWSTA_READY 0xf0f1f2f4
44#define MWL8K_FWAP_READY 0xf1f2f4a5
45#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
46#define MWL8K_HIU_SCRATCH 0x00000c40
47
48/* Host->device communications */
49#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
50#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
51#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
52#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
53#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
54#define MWL8K_H2A_INT_DUMMY (1 << 20)
55#define MWL8K_H2A_INT_RESET (1 << 15)
56#define MWL8K_H2A_INT_DOORBELL (1 << 1)
57#define MWL8K_H2A_INT_PPA_READY (1 << 0)
58
59/* Device->host communications */
60#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
61#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
62#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
63#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
64#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
65#define MWL8K_A2H_INT_DUMMY (1 << 20)
66#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
67#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
68#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
69#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
70#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
71#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
72#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
73#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
74#define MWL8K_A2H_INT_RX_READY (1 << 1)
75#define MWL8K_A2H_INT_TX_DONE (1 << 0)
76
77/* HW micro second timer register
78 * located at offset 0xA600. This
79 * will be used to timestamp tx
80 * packets.
81 */
82
83#define MWL8K_HW_TIMER_REGISTER 0x0000a600
84#define BBU_RXRDY_CNT_REG 0x0000a860
85#define NOK_CCA_CNT_REG 0x0000a6a0
86#define BBU_AVG_NOISE_VAL 0x67
87
88#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
89 MWL8K_A2H_INT_CHNL_SWITCHED | \
90 MWL8K_A2H_INT_QUEUE_EMPTY | \
91 MWL8K_A2H_INT_RADAR_DETECT | \
92 MWL8K_A2H_INT_RADIO_ON | \
93 MWL8K_A2H_INT_RADIO_OFF | \
94 MWL8K_A2H_INT_MAC_EVENT | \
95 MWL8K_A2H_INT_OPC_DONE | \
96 MWL8K_A2H_INT_RX_READY | \
97 MWL8K_A2H_INT_TX_DONE | \
98 MWL8K_A2H_INT_BA_WATCHDOG)
99
100#define MWL8K_RX_QUEUES 1
101#define MWL8K_TX_WMM_QUEUES 4
102#define MWL8K_MAX_AMPDU_QUEUES 8
103#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
104#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
105
106/* txpriorities are mapped with hw queues.
107 * Each hw queue has a txpriority.
108 */
109#define TOTAL_HW_TX_QUEUES 8
110
111/* Each HW queue can have one AMPDU stream.
112 * But, because one of the hw queue is reserved,
113 * maximum AMPDU queues that can be created are
114 * one short of total tx queues.
115 */
116#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
117
118#define MWL8K_NUM_CHANS 18
119
120struct rxd_ops {
121 int rxd_size;
122 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
123 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
124 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
125 __le16 *qos, s8 *noise);
126};
127
128struct mwl8k_device_info {
129 char *part_name;
130 char *helper_image;
131 char *fw_image_sta;
132 char *fw_image_ap;
133 struct rxd_ops *ap_rxd_ops;
134 u32 fw_api_ap;
135};
136
137struct mwl8k_rx_queue {
138 int rxd_count;
139
140 /* hw receives here */
141 int head;
142
143 /* refill descs here */
144 int tail;
145
146 void *rxd;
147 dma_addr_t rxd_dma;
148 struct {
149 struct sk_buff *skb;
150 DEFINE_DMA_UNMAP_ADDR(dma);
151 } *buf;
152};
153
154struct mwl8k_tx_queue {
155 /* hw transmits here */
156 int head;
157
158 /* sw appends here */
159 int tail;
160
161 unsigned int len;
162 struct mwl8k_tx_desc *txd;
163 dma_addr_t txd_dma;
164 struct sk_buff **skb;
165};
166
167enum {
168 AMPDU_NO_STREAM,
169 AMPDU_STREAM_NEW,
170 AMPDU_STREAM_IN_PROGRESS,
171 AMPDU_STREAM_ACTIVE,
172};
173
174struct mwl8k_ampdu_stream {
175 struct ieee80211_sta *sta;
176 u8 tid;
177 u8 state;
178 u8 idx;
179};
180
181struct mwl8k_priv {
182 struct ieee80211_hw *hw;
183 struct pci_dev *pdev;
184 int irq;
185
186 struct mwl8k_device_info *device_info;
187
188 void __iomem *sram;
189 void __iomem *regs;
190
191 /* firmware */
192 const struct firmware *fw_helper;
193 const struct firmware *fw_ucode;
194
195 /* hardware/firmware parameters */
196 bool ap_fw;
197 struct rxd_ops *rxd_ops;
198 struct ieee80211_supported_band band_24;
199 struct ieee80211_channel channels_24[14];
200 struct ieee80211_rate rates_24[13];
201 struct ieee80211_supported_band band_50;
202 struct ieee80211_channel channels_50[9];
203 struct ieee80211_rate rates_50[8];
204 u32 ap_macids_supported;
205 u32 sta_macids_supported;
206
207 /* Ampdu stream information */
208 u8 num_ampdu_queues;
209 spinlock_t stream_lock;
210 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
211 struct work_struct watchdog_ba_handle;
212
213 /* firmware access */
214 struct mutex fw_mutex;
215 struct task_struct *fw_mutex_owner;
216 struct task_struct *hw_restart_owner;
217 int fw_mutex_depth;
218 struct completion *hostcmd_wait;
219
220 atomic_t watchdog_event_pending;
221
222 /* lock held over TX and TX reap */
223 spinlock_t tx_lock;
224
225 /* TX quiesce completion, protected by fw_mutex and tx_lock */
226 struct completion *tx_wait;
227
228 /* List of interfaces. */
229 u32 macids_used;
230 struct list_head vif_list;
231
232 /* power management status cookie from firmware */
233 u32 *cookie;
234 dma_addr_t cookie_dma;
235
236 u16 num_mcaddrs;
237 u8 hw_rev;
238 u32 fw_rev;
239 u32 caps;
240
241 /*
242 * Running count of TX packets in flight, to avoid
243 * iterating over the transmit rings each time.
244 */
245 int pending_tx_pkts;
246
247 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
248 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
249 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
250
251 bool radio_on;
252 bool radio_short_preamble;
253 bool sniffer_enabled;
254 bool wmm_enabled;
255
256 /* XXX need to convert this to handle multiple interfaces */
257 bool capture_beacon;
258 u8 capture_bssid[ETH_ALEN];
259 struct sk_buff *beacon_skb;
260
261 /*
262 * This FJ worker has to be global as it is scheduled from the
263 * RX handler. At this point we don't know which interface it
264 * belongs to until the list of bssids waiting to complete join
265 * is checked.
266 */
267 struct work_struct finalize_join_worker;
268
269 /* Tasklet to perform TX reclaim. */
270 struct tasklet_struct poll_tx_task;
271
272 /* Tasklet to perform RX. */
273 struct tasklet_struct poll_rx_task;
274
275 /* Most recently reported noise in dBm */
276 s8 noise;
277
278 /*
279 * preserve the queue configurations so they can be restored if/when
280 * the firmware image is swapped.
281 */
282 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
283
284 /* To perform the task of reloading the firmware */
285 struct work_struct fw_reload;
286 bool hw_restart_in_progress;
287
288 /* async firmware loading state */
289 unsigned fw_state;
290 char *fw_pref;
291 char *fw_alt;
292 bool is_8764;
293 struct completion firmware_loading_complete;
294
295 /* bitmap of running BSSes */
296 u32 running_bsses;
297
298 /* ACS related */
299 bool sw_scan_start;
300 struct ieee80211_channel *acs_chan;
301 unsigned long channel_time;
302 struct survey_info survey[MWL8K_NUM_CHANS];
303};
304
305#define MAX_WEP_KEY_LEN 13
306#define NUM_WEP_KEYS 4
307
308/* Per interface specific private data */
309struct mwl8k_vif {
310 struct list_head list;
311 struct ieee80211_vif *vif;
312
313 /* Firmware macid for this vif. */
314 int macid;
315
316 /* Non AMPDU sequence number assigned by driver. */
317 u16 seqno;
318
319 /* Saved WEP keys */
320 struct {
321 u8 enabled;
322 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
323 } wep_key_conf[NUM_WEP_KEYS];
324
325 /* BSSID */
326 u8 bssid[ETH_ALEN];
327
328 /* A flag to indicate is HW crypto is enabled for this bssid */
329 bool is_hw_crypto_enabled;
330};
331#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
332#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
333
334struct tx_traffic_info {
335 u32 start_time;
336 u32 pkts;
337};
338
339#define MWL8K_MAX_TID 8
340struct mwl8k_sta {
341 /* Index into station database. Returned by UPDATE_STADB. */
342 u8 peer_id;
343 u8 is_ampdu_allowed;
344 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
345};
346#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
347
348static const struct ieee80211_channel mwl8k_channels_24[] = {
349 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
350 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
351 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
352 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
353 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
354 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
355 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
356 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
357 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
358 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
359 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
360 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
361 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
362 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
363};
364
365static const struct ieee80211_rate mwl8k_rates_24[] = {
366 { .bitrate = 10, .hw_value = 2, },
367 { .bitrate = 20, .hw_value = 4, },
368 { .bitrate = 55, .hw_value = 11, },
369 { .bitrate = 110, .hw_value = 22, },
370 { .bitrate = 220, .hw_value = 44, },
371 { .bitrate = 60, .hw_value = 12, },
372 { .bitrate = 90, .hw_value = 18, },
373 { .bitrate = 120, .hw_value = 24, },
374 { .bitrate = 180, .hw_value = 36, },
375 { .bitrate = 240, .hw_value = 48, },
376 { .bitrate = 360, .hw_value = 72, },
377 { .bitrate = 480, .hw_value = 96, },
378 { .bitrate = 540, .hw_value = 108, },
379};
380
381static const struct ieee80211_channel mwl8k_channels_50[] = {
382 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
383 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
384 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
385 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
386 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, .hw_value = 149, },
387 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, .hw_value = 153, },
388 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, .hw_value = 157, },
389 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, .hw_value = 161, },
390 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, .hw_value = 165, },
391};
392
393static const struct ieee80211_rate mwl8k_rates_50[] = {
394 { .bitrate = 60, .hw_value = 12, },
395 { .bitrate = 90, .hw_value = 18, },
396 { .bitrate = 120, .hw_value = 24, },
397 { .bitrate = 180, .hw_value = 36, },
398 { .bitrate = 240, .hw_value = 48, },
399 { .bitrate = 360, .hw_value = 72, },
400 { .bitrate = 480, .hw_value = 96, },
401 { .bitrate = 540, .hw_value = 108, },
402};
403
404/* Set or get info from Firmware */
405#define MWL8K_CMD_GET 0x0000
406#define MWL8K_CMD_SET 0x0001
407#define MWL8K_CMD_SET_LIST 0x0002
408
409/* Firmware command codes */
410#define MWL8K_CMD_CODE_DNLD 0x0001
411#define MWL8K_CMD_GET_HW_SPEC 0x0003
412#define MWL8K_CMD_SET_HW_SPEC 0x0004
413#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
414#define MWL8K_CMD_GET_STAT 0x0014
415#define MWL8K_CMD_BBP_REG_ACCESS 0x001a
416#define MWL8K_CMD_RADIO_CONTROL 0x001c
417#define MWL8K_CMD_RF_TX_POWER 0x001e
418#define MWL8K_CMD_TX_POWER 0x001f
419#define MWL8K_CMD_RF_ANTENNA 0x0020
420#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
421#define MWL8K_CMD_SET_PRE_SCAN 0x0107
422#define MWL8K_CMD_SET_POST_SCAN 0x0108
423#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
424#define MWL8K_CMD_SET_AID 0x010d
425#define MWL8K_CMD_SET_RATE 0x0110
426#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
427#define MWL8K_CMD_RTS_THRESHOLD 0x0113
428#define MWL8K_CMD_SET_SLOT 0x0114
429#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
430#define MWL8K_CMD_SET_WMM_MODE 0x0123
431#define MWL8K_CMD_MIMO_CONFIG 0x0125
432#define MWL8K_CMD_USE_FIXED_RATE 0x0126
433#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
434#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
435#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
436#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
437#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
438#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
439#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
440#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
441#define MWL8K_CMD_UPDATE_STADB 0x1123
442#define MWL8K_CMD_BASTREAM 0x1125
443
444#define MWL8K_LEGACY_5G_RATE_OFFSET \
445 (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50))
446
447static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
448{
449 u16 command = le16_to_cpu(cmd);
450
451#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
452 snprintf(buf, bufsize, "%s", #x);\
453 return buf;\
454 } while (0)
455 switch (command & ~0x8000) {
456 MWL8K_CMDNAME(CODE_DNLD);
457 MWL8K_CMDNAME(GET_HW_SPEC);
458 MWL8K_CMDNAME(SET_HW_SPEC);
459 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
460 MWL8K_CMDNAME(GET_STAT);
461 MWL8K_CMDNAME(RADIO_CONTROL);
462 MWL8K_CMDNAME(RF_TX_POWER);
463 MWL8K_CMDNAME(TX_POWER);
464 MWL8K_CMDNAME(RF_ANTENNA);
465 MWL8K_CMDNAME(SET_BEACON);
466 MWL8K_CMDNAME(SET_PRE_SCAN);
467 MWL8K_CMDNAME(SET_POST_SCAN);
468 MWL8K_CMDNAME(SET_RF_CHANNEL);
469 MWL8K_CMDNAME(SET_AID);
470 MWL8K_CMDNAME(SET_RATE);
471 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
472 MWL8K_CMDNAME(RTS_THRESHOLD);
473 MWL8K_CMDNAME(SET_SLOT);
474 MWL8K_CMDNAME(SET_EDCA_PARAMS);
475 MWL8K_CMDNAME(SET_WMM_MODE);
476 MWL8K_CMDNAME(MIMO_CONFIG);
477 MWL8K_CMDNAME(USE_FIXED_RATE);
478 MWL8K_CMDNAME(ENABLE_SNIFFER);
479 MWL8K_CMDNAME(SET_MAC_ADDR);
480 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
481 MWL8K_CMDNAME(BSS_START);
482 MWL8K_CMDNAME(SET_NEW_STN);
483 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
484 MWL8K_CMDNAME(UPDATE_STADB);
485 MWL8K_CMDNAME(BASTREAM);
486 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
487 default:
488 snprintf(buf, bufsize, "0x%x", cmd);
489 }
490#undef MWL8K_CMDNAME
491
492 return buf;
493}
494
495/* Hardware and firmware reset */
496static void mwl8k_hw_reset(struct mwl8k_priv *priv)
497{
498 iowrite32(MWL8K_H2A_INT_RESET,
499 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
500 iowrite32(MWL8K_H2A_INT_RESET,
501 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
502 msleep(20);
503}
504
505/* Release fw image */
506static void mwl8k_release_fw(const struct firmware **fw)
507{
508 if (*fw == NULL)
509 return;
510 release_firmware(*fw);
511 *fw = NULL;
512}
513
514static void mwl8k_release_firmware(struct mwl8k_priv *priv)
515{
516 mwl8k_release_fw(&priv->fw_ucode);
517 mwl8k_release_fw(&priv->fw_helper);
518}
519
520/* states for asynchronous f/w loading */
521static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
522enum {
523 FW_STATE_INIT = 0,
524 FW_STATE_LOADING_PREF,
525 FW_STATE_LOADING_ALT,
526 FW_STATE_ERROR,
527};
528
529/* Request fw image */
530static int mwl8k_request_fw(struct mwl8k_priv *priv,
531 const char *fname, const struct firmware **fw,
532 bool nowait)
533{
534 /* release current image */
535 if (*fw != NULL)
536 mwl8k_release_fw(fw);
537
538 if (nowait)
539 return request_firmware_nowait(THIS_MODULE, 1, fname,
540 &priv->pdev->dev, GFP_KERNEL,
541 priv, mwl8k_fw_state_machine);
542 else
543 return request_firmware(fw, fname, &priv->pdev->dev);
544}
545
546static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
547 bool nowait)
548{
549 struct mwl8k_device_info *di = priv->device_info;
550 int rc;
551
552 if (di->helper_image != NULL) {
553 if (nowait)
554 rc = mwl8k_request_fw(priv, di->helper_image,
555 &priv->fw_helper, true);
556 else
557 rc = mwl8k_request_fw(priv, di->helper_image,
558 &priv->fw_helper, false);
559 if (rc)
560 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
561 pci_name(priv->pdev), di->helper_image);
562
563 if (rc || nowait)
564 return rc;
565 }
566
567 if (nowait) {
568 /*
569 * if we get here, no helper image is needed. Skip the
570 * FW_STATE_INIT state.
571 */
572 priv->fw_state = FW_STATE_LOADING_PREF;
573 rc = mwl8k_request_fw(priv, fw_image,
574 &priv->fw_ucode,
575 true);
576 } else
577 rc = mwl8k_request_fw(priv, fw_image,
578 &priv->fw_ucode, false);
579 if (rc) {
580 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
581 pci_name(priv->pdev), fw_image);
582 mwl8k_release_fw(&priv->fw_helper);
583 return rc;
584 }
585
586 return 0;
587}
588
589struct mwl8k_cmd_pkt {
590 __le16 code;
591 __le16 length;
592 __u8 seq_num;
593 __u8 macid;
594 __le16 result;
595 char payload[];
596} __packed;
597
598/*
599 * Firmware loading.
600 */
601static int
602mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
603{
604 void __iomem *regs = priv->regs;
605 dma_addr_t dma_addr;
606 int loops;
607
608 dma_addr = dma_map_single(&priv->pdev->dev, data, length,
609 DMA_TO_DEVICE);
610 if (dma_mapping_error(&priv->pdev->dev, dma_addr))
611 return -ENOMEM;
612
613 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
614 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
615 iowrite32(MWL8K_H2A_INT_DOORBELL,
616 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
617 iowrite32(MWL8K_H2A_INT_DUMMY,
618 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
619
620 loops = 1000;
621 do {
622 u32 int_code;
623 if (priv->is_8764) {
624 int_code = ioread32(regs +
625 MWL8K_HIU_H2A_INTERRUPT_STATUS);
626 if (int_code == 0)
627 break;
628 } else {
629 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
630 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
631 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
632 break;
633 }
634 }
635 cond_resched();
636 udelay(1);
637 } while (--loops);
638
639 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE);
640
641 return loops ? 0 : -ETIMEDOUT;
642}
643
644static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
645 const u8 *data, size_t length)
646{
647 struct mwl8k_cmd_pkt *cmd;
648 int done;
649 int rc = 0;
650
651 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
652 if (cmd == NULL)
653 return -ENOMEM;
654
655 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
656 cmd->seq_num = 0;
657 cmd->macid = 0;
658 cmd->result = 0;
659
660 done = 0;
661 while (length) {
662 int block_size = length > 256 ? 256 : length;
663
664 memcpy(cmd->payload, data + done, block_size);
665 cmd->length = cpu_to_le16(block_size);
666
667 rc = mwl8k_send_fw_load_cmd(priv, cmd,
668 sizeof(*cmd) + block_size);
669 if (rc)
670 break;
671
672 done += block_size;
673 length -= block_size;
674 }
675
676 if (!rc) {
677 cmd->length = 0;
678 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
679 }
680
681 kfree(cmd);
682
683 return rc;
684}
685
686static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
687 const u8 *data, size_t length)
688{
689 unsigned char *buffer;
690 int may_continue, rc = 0;
691 u32 done, prev_block_size;
692
693 buffer = kmalloc(1024, GFP_KERNEL);
694 if (buffer == NULL)
695 return -ENOMEM;
696
697 done = 0;
698 prev_block_size = 0;
699 may_continue = 1000;
700 while (may_continue > 0) {
701 u32 block_size;
702
703 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
704 if (block_size & 1) {
705 block_size &= ~1;
706 may_continue--;
707 } else {
708 done += prev_block_size;
709 length -= prev_block_size;
710 }
711
712 if (block_size > 1024 || block_size > length) {
713 rc = -EOVERFLOW;
714 break;
715 }
716
717 if (length == 0) {
718 rc = 0;
719 break;
720 }
721
722 if (block_size == 0) {
723 rc = -EPROTO;
724 may_continue--;
725 udelay(1);
726 continue;
727 }
728
729 prev_block_size = block_size;
730 memcpy(buffer, data + done, block_size);
731
732 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
733 if (rc)
734 break;
735 }
736
737 if (!rc && length != 0)
738 rc = -EREMOTEIO;
739
740 kfree(buffer);
741
742 return rc;
743}
744
745static int mwl8k_load_firmware(struct ieee80211_hw *hw)
746{
747 struct mwl8k_priv *priv = hw->priv;
748 const struct firmware *fw = priv->fw_ucode;
749 int rc;
750 int loops;
751
752 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
753 const struct firmware *helper = priv->fw_helper;
754
755 if (helper == NULL) {
756 printk(KERN_ERR "%s: helper image needed but none "
757 "given\n", pci_name(priv->pdev));
758 return -EINVAL;
759 }
760
761 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
762 if (rc) {
763 printk(KERN_ERR "%s: unable to load firmware "
764 "helper image\n", pci_name(priv->pdev));
765 return rc;
766 }
767 msleep(20);
768
769 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
770 } else {
771 if (priv->is_8764)
772 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
773 else
774 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
775 }
776
777 if (rc) {
778 printk(KERN_ERR "%s: unable to load firmware image\n",
779 pci_name(priv->pdev));
780 return rc;
781 }
782
783 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
784
785 loops = 500000;
786 do {
787 u32 ready_code;
788
789 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
790 if (ready_code == MWL8K_FWAP_READY) {
791 priv->ap_fw = true;
792 break;
793 } else if (ready_code == MWL8K_FWSTA_READY) {
794 priv->ap_fw = false;
795 break;
796 }
797
798 cond_resched();
799 udelay(1);
800 } while (--loops);
801
802 return loops ? 0 : -ETIMEDOUT;
803}
804
805
806/* DMA header used by firmware and hardware. */
807struct mwl8k_dma_data {
808 __le16 fwlen;
809 struct ieee80211_hdr wh;
810 char data[];
811} __packed __aligned(2);
812
813/* Routines to add/remove DMA header from skb. */
814static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
815{
816 struct mwl8k_dma_data *tr;
817 int hdrlen;
818
819 tr = (struct mwl8k_dma_data *)skb->data;
820 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
821
822 if (hdrlen != sizeof(tr->wh)) {
823 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
824 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
825 *((__le16 *)(tr->data - 2)) = qos;
826 } else {
827 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
828 }
829 }
830
831 if (hdrlen != sizeof(*tr))
832 skb_pull(skb, sizeof(*tr) - hdrlen);
833}
834
835#define REDUCED_TX_HEADROOM 8
836
837static void
838mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
839 int head_pad, int tail_pad)
840{
841 struct ieee80211_hdr *wh;
842 int hdrlen;
843 int reqd_hdrlen;
844 struct mwl8k_dma_data *tr;
845
846 /*
847 * Add a firmware DMA header; the firmware requires that we
848 * present a 2-byte payload length followed by a 4-address
849 * header (without QoS field), followed (optionally) by any
850 * WEP/ExtIV header (but only filled in for CCMP).
851 */
852 wh = (struct ieee80211_hdr *)skb->data;
853
854 hdrlen = ieee80211_hdrlen(wh->frame_control);
855
856 /*
857 * Check if skb_resize is required because of
858 * tx_headroom adjustment.
859 */
860 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
861 + REDUCED_TX_HEADROOM))) {
862 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
863
864 wiphy_err(priv->hw->wiphy,
865 "Failed to reallocate TX buffer\n");
866 return;
867 }
868 skb->truesize += REDUCED_TX_HEADROOM;
869 }
870
871 reqd_hdrlen = sizeof(*tr) + head_pad;
872
873 if (hdrlen != reqd_hdrlen)
874 skb_push(skb, reqd_hdrlen - hdrlen);
875
876 if (ieee80211_is_data_qos(wh->frame_control))
877 hdrlen -= IEEE80211_QOS_CTL_LEN;
878
879 tr = (struct mwl8k_dma_data *)skb->data;
880 if (wh != &tr->wh)
881 memmove(&tr->wh, wh, hdrlen);
882 if (hdrlen != sizeof(tr->wh))
883 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
884
885 /*
886 * Firmware length is the length of the fully formed "802.11
887 * payload". That is, everything except for the 802.11 header.
888 * This includes all crypto material including the MIC.
889 */
890 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
891}
892
893static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
894 struct sk_buff *skb)
895{
896 struct ieee80211_hdr *wh;
897 struct ieee80211_tx_info *tx_info;
898 struct ieee80211_key_conf *key_conf;
899 int data_pad;
900 int head_pad = 0;
901
902 wh = (struct ieee80211_hdr *)skb->data;
903
904 tx_info = IEEE80211_SKB_CB(skb);
905
906 key_conf = NULL;
907 if (ieee80211_is_data(wh->frame_control))
908 key_conf = tx_info->control.hw_key;
909
910 /*
911 * Make sure the packet header is in the DMA header format (4-address
912 * without QoS), and add head & tail padding when HW crypto is enabled.
913 *
914 * We have the following trailer padding requirements:
915 * - WEP: 4 trailer bytes (ICV)
916 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
917 * - CCMP: 8 trailer bytes (MIC)
918 */
919 data_pad = 0;
920 if (key_conf != NULL) {
921 head_pad = key_conf->iv_len;
922 switch (key_conf->cipher) {
923 case WLAN_CIPHER_SUITE_WEP40:
924 case WLAN_CIPHER_SUITE_WEP104:
925 data_pad = 4;
926 break;
927 case WLAN_CIPHER_SUITE_TKIP:
928 data_pad = 12;
929 break;
930 case WLAN_CIPHER_SUITE_CCMP:
931 data_pad = 8;
932 break;
933 }
934 }
935 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
936}
937
938/*
939 * Packet reception for 88w8366/88w8764 AP firmware.
940 */
941struct mwl8k_rxd_ap {
942 __le16 pkt_len;
943 __u8 sq2;
944 __u8 rate;
945 __le32 pkt_phys_addr;
946 __le32 next_rxd_phys_addr;
947 __le16 qos_control;
948 __le16 htsig2;
949 __le32 hw_rssi_info;
950 __le32 hw_noise_floor_info;
951 __u8 noise_floor;
952 __u8 pad0[3];
953 __u8 rssi;
954 __u8 rx_status;
955 __u8 channel;
956 __u8 rx_ctrl;
957} __packed;
958
959#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
960#define MWL8K_AP_RATE_INFO_40MHZ 0x40
961#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
962
963#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
964
965/* 8366/8764 AP rx_status bits */
966#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
967#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
968#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
969#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
970#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
971
972static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
973{
974 struct mwl8k_rxd_ap *rxd = _rxd;
975
976 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
977 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
978}
979
980static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
981{
982 struct mwl8k_rxd_ap *rxd = _rxd;
983
984 rxd->pkt_len = cpu_to_le16(len);
985 rxd->pkt_phys_addr = cpu_to_le32(addr);
986 wmb();
987 rxd->rx_ctrl = 0;
988}
989
990static int
991mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
992 __le16 *qos, s8 *noise)
993{
994 struct mwl8k_rxd_ap *rxd = _rxd;
995
996 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
997 return -1;
998 rmb();
999
1000 memset(status, 0, sizeof(*status));
1001
1002 status->signal = -rxd->rssi;
1003 *noise = -rxd->noise_floor;
1004
1005 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
1006 status->encoding = RX_ENC_HT;
1007 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
1008 status->bw = RATE_INFO_BW_40;
1009 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
1010 } else {
1011 int i;
1012
1013 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
1014 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
1015 status->rate_idx = i;
1016 break;
1017 }
1018 }
1019 }
1020
1021 if (rxd->channel > 14) {
1022 status->band = NL80211_BAND_5GHZ;
1023 if (!(status->encoding == RX_ENC_HT) &&
1024 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1025 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1026 } else {
1027 status->band = NL80211_BAND_2GHZ;
1028 }
1029 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1030 status->band);
1031
1032 *qos = rxd->qos_control;
1033
1034 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1035 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1036 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1037 status->flag |= RX_FLAG_MMIC_ERROR;
1038
1039 return le16_to_cpu(rxd->pkt_len);
1040}
1041
1042static struct rxd_ops rxd_ap_ops = {
1043 .rxd_size = sizeof(struct mwl8k_rxd_ap),
1044 .rxd_init = mwl8k_rxd_ap_init,
1045 .rxd_refill = mwl8k_rxd_ap_refill,
1046 .rxd_process = mwl8k_rxd_ap_process,
1047};
1048
1049/*
1050 * Packet reception for STA firmware.
1051 */
1052struct mwl8k_rxd_sta {
1053 __le16 pkt_len;
1054 __u8 link_quality;
1055 __u8 noise_level;
1056 __le32 pkt_phys_addr;
1057 __le32 next_rxd_phys_addr;
1058 __le16 qos_control;
1059 __le16 rate_info;
1060 __le32 pad0[4];
1061 __u8 rssi;
1062 __u8 channel;
1063 __le16 pad1;
1064 __u8 rx_ctrl;
1065 __u8 rx_status;
1066 __u8 pad2[2];
1067} __packed;
1068
1069#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1070#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1071#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1072#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1073#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1074#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1075
1076#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1077#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1078/* ICV=0 or MIC=1 */
1079#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1080/* Key is uploaded only in failure case */
1081#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1082
1083static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1084{
1085 struct mwl8k_rxd_sta *rxd = _rxd;
1086
1087 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1088 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1089}
1090
1091static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1092{
1093 struct mwl8k_rxd_sta *rxd = _rxd;
1094
1095 rxd->pkt_len = cpu_to_le16(len);
1096 rxd->pkt_phys_addr = cpu_to_le32(addr);
1097 wmb();
1098 rxd->rx_ctrl = 0;
1099}
1100
1101static int
1102mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1103 __le16 *qos, s8 *noise)
1104{
1105 struct mwl8k_rxd_sta *rxd = _rxd;
1106 u16 rate_info;
1107
1108 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1109 return -1;
1110 rmb();
1111
1112 rate_info = le16_to_cpu(rxd->rate_info);
1113
1114 memset(status, 0, sizeof(*status));
1115
1116 status->signal = -rxd->rssi;
1117 *noise = -rxd->noise_level;
1118 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1119 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1120
1121 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1122 status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1123 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1124 status->bw = RATE_INFO_BW_40;
1125 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1126 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1127 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1128 status->encoding = RX_ENC_HT;
1129
1130 if (rxd->channel > 14) {
1131 status->band = NL80211_BAND_5GHZ;
1132 if (!(status->encoding == RX_ENC_HT) &&
1133 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1134 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1135 } else {
1136 status->band = NL80211_BAND_2GHZ;
1137 }
1138 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1139 status->band);
1140
1141 *qos = rxd->qos_control;
1142 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1143 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1144 status->flag |= RX_FLAG_MMIC_ERROR;
1145
1146 return le16_to_cpu(rxd->pkt_len);
1147}
1148
1149static struct rxd_ops rxd_sta_ops = {
1150 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1151 .rxd_init = mwl8k_rxd_sta_init,
1152 .rxd_refill = mwl8k_rxd_sta_refill,
1153 .rxd_process = mwl8k_rxd_sta_process,
1154};
1155
1156
1157#define MWL8K_RX_DESCS 256
1158#define MWL8K_RX_MAXSZ 3800
1159
1160static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1161{
1162 struct mwl8k_priv *priv = hw->priv;
1163 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1164 int size;
1165 int i;
1166
1167 rxq->rxd_count = 0;
1168 rxq->head = 0;
1169 rxq->tail = 0;
1170
1171 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1172
1173 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma,
1174 GFP_KERNEL);
1175 if (rxq->rxd == NULL) {
1176 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1177 return -ENOMEM;
1178 }
1179
1180 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1181 if (rxq->buf == NULL) {
1182 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd,
1183 rxq->rxd_dma);
1184 return -ENOMEM;
1185 }
1186
1187 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1188 int desc_size;
1189 void *rxd;
1190 int nexti;
1191 dma_addr_t next_dma_addr;
1192
1193 desc_size = priv->rxd_ops->rxd_size;
1194 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1195
1196 nexti = i + 1;
1197 if (nexti == MWL8K_RX_DESCS)
1198 nexti = 0;
1199 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1200
1201 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1202 }
1203
1204 return 0;
1205}
1206
1207static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1208{
1209 struct mwl8k_priv *priv = hw->priv;
1210 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1211 int refilled = 0;
1212
1213 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1214 struct sk_buff *skb;
1215 dma_addr_t addr;
1216 int rx;
1217 void *rxd;
1218
1219 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1220 if (skb == NULL)
1221 break;
1222
1223 addr = dma_map_single(&priv->pdev->dev, skb->data,
1224 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1225
1226 rxq->rxd_count++;
1227 rx = rxq->tail++;
1228 if (rxq->tail == MWL8K_RX_DESCS)
1229 rxq->tail = 0;
1230 rxq->buf[rx].skb = skb;
1231 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1232
1233 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1234 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1235
1236 refilled++;
1237 }
1238
1239 return refilled;
1240}
1241
1242/* Must be called only when the card's reception is completely halted */
1243static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1244{
1245 struct mwl8k_priv *priv = hw->priv;
1246 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1247 int i;
1248
1249 if (rxq->rxd == NULL)
1250 return;
1251
1252 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1253 if (rxq->buf[i].skb != NULL) {
1254 dma_unmap_single(&priv->pdev->dev,
1255 dma_unmap_addr(&rxq->buf[i], dma),
1256 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1257 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1258
1259 kfree_skb(rxq->buf[i].skb);
1260 rxq->buf[i].skb = NULL;
1261 }
1262 }
1263
1264 kfree(rxq->buf);
1265 rxq->buf = NULL;
1266
1267 dma_free_coherent(&priv->pdev->dev,
1268 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd,
1269 rxq->rxd_dma);
1270 rxq->rxd = NULL;
1271}
1272
1273
1274/*
1275 * Scan a list of BSSIDs to process for finalize join.
1276 * Allows for extension to process multiple BSSIDs.
1277 */
1278static inline int
1279mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1280{
1281 return priv->capture_beacon &&
1282 ieee80211_is_beacon(wh->frame_control) &&
1283 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
1284}
1285
1286static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1287 struct sk_buff *skb)
1288{
1289 struct mwl8k_priv *priv = hw->priv;
1290
1291 priv->capture_beacon = false;
1292 eth_zero_addr(priv->capture_bssid);
1293
1294 /*
1295 * Use GFP_ATOMIC as rxq_process is called from
1296 * the primary interrupt handler, memory allocation call
1297 * must not sleep.
1298 */
1299 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1300 if (priv->beacon_skb != NULL)
1301 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1302}
1303
1304static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1305 u8 *bssid)
1306{
1307 struct mwl8k_vif *mwl8k_vif;
1308
1309 list_for_each_entry(mwl8k_vif,
1310 vif_list, list) {
1311 if (memcmp(bssid, mwl8k_vif->bssid,
1312 ETH_ALEN) == 0)
1313 return mwl8k_vif;
1314 }
1315
1316 return NULL;
1317}
1318
1319static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1320{
1321 struct mwl8k_priv *priv = hw->priv;
1322 struct mwl8k_vif *mwl8k_vif = NULL;
1323 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1324 int processed;
1325
1326 processed = 0;
1327 while (rxq->rxd_count && limit--) {
1328 struct sk_buff *skb;
1329 void *rxd;
1330 int pkt_len;
1331 struct ieee80211_rx_status status;
1332 struct ieee80211_hdr *wh;
1333 __le16 qos;
1334
1335 skb = rxq->buf[rxq->head].skb;
1336 if (skb == NULL)
1337 break;
1338
1339 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1340
1341 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1342 &priv->noise);
1343 if (pkt_len < 0)
1344 break;
1345
1346 rxq->buf[rxq->head].skb = NULL;
1347
1348 dma_unmap_single(&priv->pdev->dev,
1349 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1350 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1351 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1352
1353 rxq->head++;
1354 if (rxq->head == MWL8K_RX_DESCS)
1355 rxq->head = 0;
1356
1357 rxq->rxd_count--;
1358
1359 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1360
1361 /*
1362 * Check for a pending join operation. Save a
1363 * copy of the beacon and schedule a tasklet to
1364 * send a FINALIZE_JOIN command to the firmware.
1365 */
1366 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1367 mwl8k_save_beacon(hw, skb);
1368
1369 if (ieee80211_has_protected(wh->frame_control)) {
1370
1371 /* Check if hw crypto has been enabled for
1372 * this bss. If yes, set the status flags
1373 * accordingly
1374 */
1375 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1376 wh->addr1);
1377
1378 if (mwl8k_vif != NULL &&
1379 mwl8k_vif->is_hw_crypto_enabled) {
1380 /*
1381 * When MMIC ERROR is encountered
1382 * by the firmware, payload is
1383 * dropped and only 32 bytes of
1384 * mwl8k Firmware header is sent
1385 * to the host.
1386 *
1387 * We need to add four bytes of
1388 * key information. In it
1389 * MAC80211 expects keyidx set to
1390 * 0 for triggering Counter
1391 * Measure of MMIC failure.
1392 */
1393 if (status.flag & RX_FLAG_MMIC_ERROR) {
1394 struct mwl8k_dma_data *tr;
1395 tr = (struct mwl8k_dma_data *)skb->data;
1396 memset((void *)&(tr->data), 0, 4);
1397 pkt_len += 4;
1398 }
1399
1400 if (!ieee80211_is_auth(wh->frame_control))
1401 status.flag |= RX_FLAG_IV_STRIPPED |
1402 RX_FLAG_DECRYPTED |
1403 RX_FLAG_MMIC_STRIPPED;
1404 }
1405 }
1406
1407 skb_put(skb, pkt_len);
1408 mwl8k_remove_dma_header(skb, qos);
1409 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1410 ieee80211_rx_irqsafe(hw, skb);
1411
1412 processed++;
1413 }
1414
1415 return processed;
1416}
1417
1418
1419/*
1420 * Packet transmission.
1421 */
1422
1423#define MWL8K_TXD_STATUS_OK 0x00000001
1424#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1425#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1426#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1427#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1428
1429#define MWL8K_QOS_QLEN_UNSPEC 0xff00
1430#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1431#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1432#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1433#define MWL8K_QOS_EOSP 0x0010
1434
1435struct mwl8k_tx_desc {
1436 __le32 status;
1437 __u8 data_rate;
1438 __u8 tx_priority;
1439 __le16 qos_control;
1440 __le32 pkt_phys_addr;
1441 __le16 pkt_len;
1442 __u8 dest_MAC_addr[ETH_ALEN];
1443 __le32 next_txd_phys_addr;
1444 __le32 timestamp;
1445 __le16 rate_info;
1446 __u8 peer_id;
1447 __u8 tx_frag_cnt;
1448} __packed;
1449
1450#define MWL8K_TX_DESCS 128
1451
1452static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1453{
1454 struct mwl8k_priv *priv = hw->priv;
1455 struct mwl8k_tx_queue *txq = priv->txq + index;
1456 int size;
1457 int i;
1458
1459 txq->len = 0;
1460 txq->head = 0;
1461 txq->tail = 0;
1462
1463 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1464
1465 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma,
1466 GFP_KERNEL);
1467 if (txq->txd == NULL) {
1468 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1469 return -ENOMEM;
1470 }
1471
1472 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1473 if (txq->skb == NULL) {
1474 dma_free_coherent(&priv->pdev->dev, size, txq->txd,
1475 txq->txd_dma);
1476 txq->txd = NULL;
1477 return -ENOMEM;
1478 }
1479
1480 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1481 struct mwl8k_tx_desc *tx_desc;
1482 int nexti;
1483
1484 tx_desc = txq->txd + i;
1485 nexti = (i + 1) % MWL8K_TX_DESCS;
1486
1487 tx_desc->status = 0;
1488 tx_desc->next_txd_phys_addr =
1489 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1490 }
1491
1492 return 0;
1493}
1494
1495static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1496{
1497 iowrite32(MWL8K_H2A_INT_PPA_READY,
1498 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1499 iowrite32(MWL8K_H2A_INT_DUMMY,
1500 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1501 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1502}
1503
1504static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1505{
1506 struct mwl8k_priv *priv = hw->priv;
1507 int i;
1508
1509 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1510 struct mwl8k_tx_queue *txq = priv->txq + i;
1511 int fw_owned = 0;
1512 int drv_owned = 0;
1513 int unused = 0;
1514 int desc;
1515
1516 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1517 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1518 u32 status;
1519
1520 status = le32_to_cpu(tx_desc->status);
1521 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1522 fw_owned++;
1523 else
1524 drv_owned++;
1525
1526 if (tx_desc->pkt_len == 0)
1527 unused++;
1528 }
1529
1530 wiphy_err(hw->wiphy,
1531 "txq[%d] len=%d head=%d tail=%d "
1532 "fw_owned=%d drv_owned=%d unused=%d\n",
1533 i,
1534 txq->len, txq->head, txq->tail,
1535 fw_owned, drv_owned, unused);
1536 }
1537}
1538
1539/*
1540 * Must be called with priv->fw_mutex held and tx queues stopped.
1541 */
1542#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1543
1544static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1545{
1546 struct mwl8k_priv *priv = hw->priv;
1547 DECLARE_COMPLETION_ONSTACK(tx_wait);
1548 int retry;
1549 int rc;
1550
1551 might_sleep();
1552
1553 /* Since fw restart is in progress, allow only the firmware
1554 * commands from the restart code and block the other
1555 * commands since they are going to fail in any case since
1556 * the firmware has crashed
1557 */
1558 if (priv->hw_restart_in_progress) {
1559 if (priv->hw_restart_owner == current)
1560 return 0;
1561 else
1562 return -EBUSY;
1563 }
1564
1565 if (atomic_read(&priv->watchdog_event_pending))
1566 return 0;
1567
1568 /*
1569 * The TX queues are stopped at this point, so this test
1570 * doesn't need to take ->tx_lock.
1571 */
1572 if (!priv->pending_tx_pkts)
1573 return 0;
1574
1575 retry = 1;
1576 rc = 0;
1577
1578 spin_lock_bh(&priv->tx_lock);
1579 priv->tx_wait = &tx_wait;
1580 while (!rc) {
1581 int oldcount;
1582 unsigned long timeout;
1583
1584 oldcount = priv->pending_tx_pkts;
1585
1586 spin_unlock_bh(&priv->tx_lock);
1587 timeout = wait_for_completion_timeout(&tx_wait,
1588 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1589
1590 if (atomic_read(&priv->watchdog_event_pending)) {
1591 spin_lock_bh(&priv->tx_lock);
1592 priv->tx_wait = NULL;
1593 spin_unlock_bh(&priv->tx_lock);
1594 return 0;
1595 }
1596
1597 spin_lock_bh(&priv->tx_lock);
1598
1599 if (timeout || !priv->pending_tx_pkts) {
1600 WARN_ON(priv->pending_tx_pkts);
1601 if (retry)
1602 wiphy_notice(hw->wiphy, "tx rings drained\n");
1603 break;
1604 }
1605
1606 if (retry) {
1607 mwl8k_tx_start(priv);
1608 retry = 0;
1609 continue;
1610 }
1611
1612 if (priv->pending_tx_pkts < oldcount) {
1613 wiphy_notice(hw->wiphy,
1614 "waiting for tx rings to drain (%d -> %d pkts)\n",
1615 oldcount, priv->pending_tx_pkts);
1616 retry = 1;
1617 continue;
1618 }
1619
1620 priv->tx_wait = NULL;
1621
1622 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1623 MWL8K_TX_WAIT_TIMEOUT_MS);
1624 mwl8k_dump_tx_rings(hw);
1625 priv->hw_restart_in_progress = true;
1626 ieee80211_queue_work(hw, &priv->fw_reload);
1627
1628 rc = -ETIMEDOUT;
1629 }
1630 priv->tx_wait = NULL;
1631 spin_unlock_bh(&priv->tx_lock);
1632
1633 return rc;
1634}
1635
1636#define MWL8K_TXD_SUCCESS(status) \
1637 ((status) & (MWL8K_TXD_STATUS_OK | \
1638 MWL8K_TXD_STATUS_OK_RETRY | \
1639 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1640
1641static int mwl8k_tid_queue_mapping(u8 tid)
1642{
1643 BUG_ON(tid > 7);
1644
1645 switch (tid) {
1646 case 0:
1647 case 3:
1648 return IEEE80211_AC_BE;
1649 case 1:
1650 case 2:
1651 return IEEE80211_AC_BK;
1652 case 4:
1653 case 5:
1654 return IEEE80211_AC_VI;
1655 case 6:
1656 case 7:
1657 return IEEE80211_AC_VO;
1658 default:
1659 return -1;
1660 }
1661}
1662
1663/* The firmware will fill in the rate information
1664 * for each packet that gets queued in the hardware
1665 * and these macros will interpret that info.
1666 */
1667
1668#define RI_FORMAT(a) (a & 0x0001)
1669#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1670
1671static int
1672mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1673{
1674 struct mwl8k_priv *priv = hw->priv;
1675 struct mwl8k_tx_queue *txq = priv->txq + index;
1676 int processed;
1677
1678 processed = 0;
1679 while (txq->len > 0 && limit--) {
1680 int tx;
1681 struct mwl8k_tx_desc *tx_desc;
1682 unsigned long addr;
1683 int size;
1684 struct sk_buff *skb;
1685 struct ieee80211_tx_info *info;
1686 u32 status;
1687 struct ieee80211_sta *sta;
1688 struct mwl8k_sta *sta_info = NULL;
1689 u16 rate_info;
1690 struct ieee80211_hdr *wh;
1691
1692 tx = txq->head;
1693 tx_desc = txq->txd + tx;
1694
1695 status = le32_to_cpu(tx_desc->status);
1696
1697 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1698 if (!force)
1699 break;
1700 tx_desc->status &=
1701 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1702 }
1703
1704 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1705 BUG_ON(txq->len == 0);
1706 txq->len--;
1707 priv->pending_tx_pkts--;
1708
1709 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1710 size = le16_to_cpu(tx_desc->pkt_len);
1711 skb = txq->skb[tx];
1712 txq->skb[tx] = NULL;
1713
1714 BUG_ON(skb == NULL);
1715 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE);
1716
1717 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1718
1719 wh = (struct ieee80211_hdr *) skb->data;
1720
1721 /* Mark descriptor as unused */
1722 tx_desc->pkt_phys_addr = 0;
1723 tx_desc->pkt_len = 0;
1724
1725 info = IEEE80211_SKB_CB(skb);
1726 if (ieee80211_is_data(wh->frame_control)) {
1727 rcu_read_lock();
1728 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1729 wh->addr2);
1730 if (sta) {
1731 sta_info = MWL8K_STA(sta);
1732 BUG_ON(sta_info == NULL);
1733 rate_info = le16_to_cpu(tx_desc->rate_info);
1734 /* If rate is < 6.5 Mpbs for an ht station
1735 * do not form an ampdu. If the station is a
1736 * legacy station (format = 0), do not form an
1737 * ampdu
1738 */
1739 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1740 RI_FORMAT(rate_info) == 0) {
1741 sta_info->is_ampdu_allowed = false;
1742 } else {
1743 sta_info->is_ampdu_allowed = true;
1744 }
1745 }
1746 rcu_read_unlock();
1747 }
1748
1749 ieee80211_tx_info_clear_status(info);
1750
1751 /* Rate control is happening in the firmware.
1752 * Ensure no tx rate is being reported.
1753 */
1754 info->status.rates[0].idx = -1;
1755 info->status.rates[0].count = 1;
1756
1757 if (MWL8K_TXD_SUCCESS(status))
1758 info->flags |= IEEE80211_TX_STAT_ACK;
1759
1760 ieee80211_tx_status_irqsafe(hw, skb);
1761
1762 processed++;
1763 }
1764
1765 return processed;
1766}
1767
1768/* must be called only when the card's transmit is completely halted */
1769static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1770{
1771 struct mwl8k_priv *priv = hw->priv;
1772 struct mwl8k_tx_queue *txq = priv->txq + index;
1773
1774 if (txq->txd == NULL)
1775 return;
1776
1777 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1778
1779 kfree(txq->skb);
1780 txq->skb = NULL;
1781
1782 dma_free_coherent(&priv->pdev->dev,
1783 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1784 txq->txd, txq->txd_dma);
1785 txq->txd = NULL;
1786}
1787
1788/* caller must hold priv->stream_lock when calling the stream functions */
1789static struct mwl8k_ampdu_stream *
1790mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1791{
1792 struct mwl8k_ampdu_stream *stream;
1793 struct mwl8k_priv *priv = hw->priv;
1794 int i;
1795
1796 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1797 stream = &priv->ampdu[i];
1798 if (stream->state == AMPDU_NO_STREAM) {
1799 stream->sta = sta;
1800 stream->state = AMPDU_STREAM_NEW;
1801 stream->tid = tid;
1802 stream->idx = i;
1803 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1804 sta->addr, tid);
1805 return stream;
1806 }
1807 }
1808 return NULL;
1809}
1810
1811static int
1812mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1813{
1814 int ret;
1815
1816 /* if the stream has already been started, don't start it again */
1817 if (stream->state != AMPDU_STREAM_NEW)
1818 return 0;
1819 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1820 if (ret)
1821 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1822 "%d\n", stream->sta->addr, stream->tid, ret);
1823 else
1824 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1825 stream->sta->addr, stream->tid);
1826 return ret;
1827}
1828
1829static void
1830mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1831{
1832 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1833 stream->tid);
1834 memset(stream, 0, sizeof(*stream));
1835}
1836
1837static struct mwl8k_ampdu_stream *
1838mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1839{
1840 struct mwl8k_priv *priv = hw->priv;
1841 int i;
1842
1843 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1844 struct mwl8k_ampdu_stream *stream;
1845 stream = &priv->ampdu[i];
1846 if (stream->state == AMPDU_NO_STREAM)
1847 continue;
1848 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1849 stream->tid == tid)
1850 return stream;
1851 }
1852 return NULL;
1853}
1854
1855#define MWL8K_AMPDU_PACKET_THRESHOLD 64
1856static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1857{
1858 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1859 struct tx_traffic_info *tx_stats;
1860
1861 BUG_ON(tid >= MWL8K_MAX_TID);
1862 tx_stats = &sta_info->tx_stats[tid];
1863
1864 return sta_info->is_ampdu_allowed &&
1865 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1866}
1867
1868static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1869{
1870 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1871 struct tx_traffic_info *tx_stats;
1872
1873 BUG_ON(tid >= MWL8K_MAX_TID);
1874 tx_stats = &sta_info->tx_stats[tid];
1875
1876 if (tx_stats->start_time == 0)
1877 tx_stats->start_time = jiffies;
1878
1879 /* reset the packet count after each second elapses. If the number of
1880 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1881 * an ampdu stream to be started.
1882 */
1883 if (time_after(jiffies, (unsigned long)tx_stats->start_time + HZ)) {
1884 tx_stats->pkts = 0;
1885 tx_stats->start_time = 0;
1886 } else
1887 tx_stats->pkts++;
1888}
1889
1890/* The hardware ampdu queues start from 5.
1891 * txpriorities for ampdu queues are
1892 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1893 * and queue 3 is lowest (queue 4 is reserved)
1894 */
1895#define BA_QUEUE 5
1896
1897static void
1898mwl8k_txq_xmit(struct ieee80211_hw *hw,
1899 int index,
1900 struct ieee80211_sta *sta,
1901 struct sk_buff *skb)
1902{
1903 struct mwl8k_priv *priv = hw->priv;
1904 struct ieee80211_tx_info *tx_info;
1905 struct mwl8k_vif *mwl8k_vif;
1906 struct ieee80211_hdr *wh;
1907 struct mwl8k_tx_queue *txq;
1908 struct mwl8k_tx_desc *tx;
1909 dma_addr_t dma;
1910 u32 txstatus;
1911 u8 txdatarate;
1912 u16 qos;
1913 int txpriority;
1914 u8 tid = 0;
1915 struct mwl8k_ampdu_stream *stream = NULL;
1916 bool start_ba_session = false;
1917 bool mgmtframe = false;
1918 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1919 bool eapol_frame = false;
1920
1921 wh = (struct ieee80211_hdr *)skb->data;
1922 if (ieee80211_is_data_qos(wh->frame_control))
1923 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1924 else
1925 qos = 0;
1926
1927 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1928 eapol_frame = true;
1929
1930 if (ieee80211_is_mgmt(wh->frame_control))
1931 mgmtframe = true;
1932
1933 if (priv->ap_fw)
1934 mwl8k_encapsulate_tx_frame(priv, skb);
1935 else
1936 mwl8k_add_dma_header(priv, skb, 0, 0);
1937
1938 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1939
1940 tx_info = IEEE80211_SKB_CB(skb);
1941 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1942
1943 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1944 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1945 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1946 mwl8k_vif->seqno += 0x10;
1947 }
1948
1949 /* Setup firmware control bit fields for each frame type. */
1950 txstatus = 0;
1951 txdatarate = 0;
1952 if (ieee80211_is_mgmt(wh->frame_control) ||
1953 ieee80211_is_ctl(wh->frame_control)) {
1954 txdatarate = 0;
1955 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1956 } else if (ieee80211_is_data(wh->frame_control)) {
1957 txdatarate = 1;
1958 if (is_multicast_ether_addr(wh->addr1))
1959 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1960
1961 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1962 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1963 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1964 else
1965 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1966 }
1967
1968 /* Queue ADDBA request in the respective data queue. While setting up
1969 * the ampdu stream, mac80211 queues further packets for that
1970 * particular ra/tid pair. However, packets piled up in the hardware
1971 * for that ra/tid pair will still go out. ADDBA request and the
1972 * related data packets going out from different queues asynchronously
1973 * will cause a shift in the receiver window which might result in
1974 * ampdu packets getting dropped at the receiver after the stream has
1975 * been setup.
1976 */
1977 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1978 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1979 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1980 priv->ap_fw)) {
1981 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1982 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1983 index = mwl8k_tid_queue_mapping(tid);
1984 }
1985
1986 txpriority = index;
1987
1988 if (priv->ap_fw && sta && sta->deflink.ht_cap.ht_supported && !eapol_frame &&
1989 ieee80211_is_data_qos(wh->frame_control)) {
1990 tid = qos & 0xf;
1991 mwl8k_tx_count_packet(sta, tid);
1992 spin_lock(&priv->stream_lock);
1993 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1994 if (stream != NULL) {
1995 if (stream->state == AMPDU_STREAM_ACTIVE) {
1996 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1997 txpriority = (BA_QUEUE + stream->idx) %
1998 TOTAL_HW_TX_QUEUES;
1999 if (stream->idx <= 1)
2000 index = stream->idx +
2001 MWL8K_TX_WMM_QUEUES;
2002
2003 } else if (stream->state == AMPDU_STREAM_NEW) {
2004 /* We get here if the driver sends us packets
2005 * after we've initiated a stream, but before
2006 * our ampdu_action routine has been called
2007 * with IEEE80211_AMPDU_TX_START to get the SSN
2008 * for the ADDBA request. So this packet can
2009 * go out with no risk of sequence number
2010 * mismatch. No special handling is required.
2011 */
2012 } else {
2013 /* Drop packets that would go out after the
2014 * ADDBA request was sent but before the ADDBA
2015 * response is received. If we don't do this,
2016 * the recipient would probably receive it
2017 * after the ADDBA request with SSN 0. This
2018 * will cause the recipient's BA receive window
2019 * to shift, which would cause the subsequent
2020 * packets in the BA stream to be discarded.
2021 * mac80211 queues our packets for us in this
2022 * case, so this is really just a safety check.
2023 */
2024 wiphy_warn(hw->wiphy,
2025 "Cannot send packet while ADDBA "
2026 "dialog is underway.\n");
2027 spin_unlock(&priv->stream_lock);
2028 dev_kfree_skb(skb);
2029 return;
2030 }
2031 } else {
2032 /* Defer calling mwl8k_start_stream so that the current
2033 * skb can go out before the ADDBA request. This
2034 * prevents sequence number mismatch at the recepient
2035 * as described above.
2036 */
2037 if (mwl8k_ampdu_allowed(sta, tid)) {
2038 stream = mwl8k_add_stream(hw, sta, tid);
2039 if (stream != NULL)
2040 start_ba_session = true;
2041 }
2042 }
2043 spin_unlock(&priv->stream_lock);
2044 } else {
2045 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2046 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2047 }
2048
2049 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
2050 DMA_TO_DEVICE);
2051
2052 if (dma_mapping_error(&priv->pdev->dev, dma)) {
2053 wiphy_debug(hw->wiphy,
2054 "failed to dma map skb, dropping TX frame.\n");
2055 if (start_ba_session) {
2056 spin_lock(&priv->stream_lock);
2057 mwl8k_remove_stream(hw, stream);
2058 spin_unlock(&priv->stream_lock);
2059 }
2060 dev_kfree_skb(skb);
2061 return;
2062 }
2063
2064 spin_lock_bh(&priv->tx_lock);
2065
2066 txq = priv->txq + index;
2067
2068 /* Mgmt frames that go out frequently are probe
2069 * responses. Other mgmt frames got out relatively
2070 * infrequently. Hence reserve 2 buffers so that
2071 * other mgmt frames do not get dropped due to an
2072 * already queued probe response in one of the
2073 * reserved buffers.
2074 */
2075
2076 if (txq->len >= MWL8K_TX_DESCS - 2) {
2077 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2078 if (start_ba_session) {
2079 spin_lock(&priv->stream_lock);
2080 mwl8k_remove_stream(hw, stream);
2081 spin_unlock(&priv->stream_lock);
2082 }
2083 mwl8k_tx_start(priv);
2084 spin_unlock_bh(&priv->tx_lock);
2085 dma_unmap_single(&priv->pdev->dev, dma, skb->len,
2086 DMA_TO_DEVICE);
2087 dev_kfree_skb(skb);
2088 return;
2089 }
2090 }
2091
2092 BUG_ON(txq->skb[txq->tail] != NULL);
2093 txq->skb[txq->tail] = skb;
2094
2095 tx = txq->txd + txq->tail;
2096 tx->data_rate = txdatarate;
2097 tx->tx_priority = txpriority;
2098 tx->qos_control = cpu_to_le16(qos);
2099 tx->pkt_phys_addr = cpu_to_le32(dma);
2100 tx->pkt_len = cpu_to_le16(skb->len);
2101 tx->rate_info = 0;
2102 if (!priv->ap_fw && sta != NULL)
2103 tx->peer_id = MWL8K_STA(sta)->peer_id;
2104 else
2105 tx->peer_id = 0;
2106
2107 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2108 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2109 MWL8K_HW_TIMER_REGISTER));
2110 else
2111 tx->timestamp = 0;
2112
2113 wmb();
2114 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2115
2116 txq->len++;
2117 priv->pending_tx_pkts++;
2118
2119 txq->tail++;
2120 if (txq->tail == MWL8K_TX_DESCS)
2121 txq->tail = 0;
2122
2123 mwl8k_tx_start(priv);
2124
2125 spin_unlock_bh(&priv->tx_lock);
2126
2127 /* Initiate the ampdu session here */
2128 if (start_ba_session) {
2129 spin_lock(&priv->stream_lock);
2130 if (mwl8k_start_stream(hw, stream))
2131 mwl8k_remove_stream(hw, stream);
2132 spin_unlock(&priv->stream_lock);
2133 }
2134}
2135
2136
2137/*
2138 * Firmware access.
2139 *
2140 * We have the following requirements for issuing firmware commands:
2141 * - Some commands require that the packet transmit path is idle when
2142 * the command is issued. (For simplicity, we'll just quiesce the
2143 * transmit path for every command.)
2144 * - There are certain sequences of commands that need to be issued to
2145 * the hardware sequentially, with no other intervening commands.
2146 *
2147 * This leads to an implementation of a "firmware lock" as a mutex that
2148 * can be taken recursively, and which is taken by both the low-level
2149 * command submission function (mwl8k_post_cmd) as well as any users of
2150 * that function that require issuing of an atomic sequence of commands,
2151 * and quiesces the transmit path whenever it's taken.
2152 */
2153static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2154{
2155 struct mwl8k_priv *priv = hw->priv;
2156
2157 if (priv->fw_mutex_owner != current) {
2158 int rc;
2159
2160 mutex_lock(&priv->fw_mutex);
2161 ieee80211_stop_queues(hw);
2162
2163 rc = mwl8k_tx_wait_empty(hw);
2164 if (rc) {
2165 if (!priv->hw_restart_in_progress)
2166 ieee80211_wake_queues(hw);
2167
2168 mutex_unlock(&priv->fw_mutex);
2169
2170 return rc;
2171 }
2172
2173 priv->fw_mutex_owner = current;
2174 }
2175
2176 priv->fw_mutex_depth++;
2177
2178 return 0;
2179}
2180
2181static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2182{
2183 struct mwl8k_priv *priv = hw->priv;
2184
2185 if (!--priv->fw_mutex_depth) {
2186 if (!priv->hw_restart_in_progress)
2187 ieee80211_wake_queues(hw);
2188
2189 priv->fw_mutex_owner = NULL;
2190 mutex_unlock(&priv->fw_mutex);
2191 }
2192}
2193
2194static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2195 u32 bitmap);
2196
2197/*
2198 * Command processing.
2199 */
2200
2201/* Timeout firmware commands after 10s */
2202#define MWL8K_CMD_TIMEOUT_MS 10000
2203
2204static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2205{
2206 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2207 struct mwl8k_priv *priv = hw->priv;
2208 void __iomem *regs = priv->regs;
2209 dma_addr_t dma_addr;
2210 unsigned int dma_size;
2211 int rc;
2212 unsigned long timeout = 0;
2213 u8 buf[32];
2214 u32 bitmap = 0;
2215
2216 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2217 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2218
2219 /* Before posting firmware commands that could change the hardware
2220 * characteristics, make sure that all BSSes are stopped temporary.
2221 * Enable these stopped BSSes after completion of the commands
2222 */
2223
2224 rc = mwl8k_fw_lock(hw);
2225 if (rc)
2226 return rc;
2227
2228 if (priv->ap_fw && priv->running_bsses) {
2229 switch (le16_to_cpu(cmd->code)) {
2230 case MWL8K_CMD_SET_RF_CHANNEL:
2231 case MWL8K_CMD_RADIO_CONTROL:
2232 case MWL8K_CMD_RF_TX_POWER:
2233 case MWL8K_CMD_TX_POWER:
2234 case MWL8K_CMD_RF_ANTENNA:
2235 case MWL8K_CMD_RTS_THRESHOLD:
2236 case MWL8K_CMD_MIMO_CONFIG:
2237 bitmap = priv->running_bsses;
2238 mwl8k_enable_bsses(hw, false, bitmap);
2239 break;
2240 }
2241 }
2242
2243 cmd->result = (__force __le16) 0xffff;
2244 dma_size = le16_to_cpu(cmd->length);
2245 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size,
2246 DMA_BIDIRECTIONAL);
2247 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) {
2248 rc = -ENOMEM;
2249 goto exit;
2250 }
2251
2252 priv->hostcmd_wait = &cmd_wait;
2253 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2254 iowrite32(MWL8K_H2A_INT_DOORBELL,
2255 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2256 iowrite32(MWL8K_H2A_INT_DUMMY,
2257 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2258
2259 timeout = wait_for_completion_timeout(&cmd_wait,
2260 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2261
2262 priv->hostcmd_wait = NULL;
2263
2264
2265 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size,
2266 DMA_BIDIRECTIONAL);
2267
2268 if (!timeout) {
2269 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2270 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2271 MWL8K_CMD_TIMEOUT_MS);
2272 rc = -ETIMEDOUT;
2273 } else {
2274 int ms;
2275
2276 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2277
2278 rc = cmd->result ? -EINVAL : 0;
2279 if (rc)
2280 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2281 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2282 le16_to_cpu(cmd->result));
2283 else if (ms > 2000)
2284 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2285 mwl8k_cmd_name(cmd->code,
2286 buf, sizeof(buf)),
2287 ms);
2288 }
2289
2290exit:
2291 if (bitmap)
2292 mwl8k_enable_bsses(hw, true, bitmap);
2293
2294 mwl8k_fw_unlock(hw);
2295
2296 return rc;
2297}
2298
2299static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2300 struct ieee80211_vif *vif,
2301 struct mwl8k_cmd_pkt *cmd)
2302{
2303 if (vif != NULL)
2304 cmd->macid = MWL8K_VIF(vif)->macid;
2305 return mwl8k_post_cmd(hw, cmd);
2306}
2307
2308/*
2309 * Setup code shared between STA and AP firmware images.
2310 */
2311static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2312{
2313 struct mwl8k_priv *priv = hw->priv;
2314
2315 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2316 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2317
2318 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2319 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2320
2321 priv->band_24.band = NL80211_BAND_2GHZ;
2322 priv->band_24.channels = priv->channels_24;
2323 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2324 priv->band_24.bitrates = priv->rates_24;
2325 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2326
2327 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24;
2328}
2329
2330static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2331{
2332 struct mwl8k_priv *priv = hw->priv;
2333
2334 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2335 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2336
2337 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2338 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2339
2340 priv->band_50.band = NL80211_BAND_5GHZ;
2341 priv->band_50.channels = priv->channels_50;
2342 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2343 priv->band_50.bitrates = priv->rates_50;
2344 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2345
2346 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50;
2347}
2348
2349/*
2350 * CMD_GET_HW_SPEC (STA version).
2351 */
2352struct mwl8k_cmd_get_hw_spec_sta {
2353 struct mwl8k_cmd_pkt header;
2354 __u8 hw_rev;
2355 __u8 host_interface;
2356 __le16 num_mcaddrs;
2357 __u8 perm_addr[ETH_ALEN];
2358 __le16 region_code;
2359 __le32 fw_rev;
2360 __le32 ps_cookie;
2361 __le32 caps;
2362 __u8 mcs_bitmap[16];
2363 __le32 rx_queue_ptr;
2364 __le32 num_tx_queues;
2365 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2366 __le32 caps2;
2367 __le32 num_tx_desc_per_queue;
2368 __le32 total_rxd;
2369} __packed;
2370
2371#define MWL8K_CAP_MAX_AMSDU 0x20000000
2372#define MWL8K_CAP_GREENFIELD 0x08000000
2373#define MWL8K_CAP_AMPDU 0x04000000
2374#define MWL8K_CAP_RX_STBC 0x01000000
2375#define MWL8K_CAP_TX_STBC 0x00800000
2376#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2377#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2378#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2379#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2380#define MWL8K_CAP_DELAY_BA 0x00003000
2381#define MWL8K_CAP_MIMO 0x00000200
2382#define MWL8K_CAP_40MHZ 0x00000100
2383#define MWL8K_CAP_BAND_MASK 0x00000007
2384#define MWL8K_CAP_5GHZ 0x00000004
2385#define MWL8K_CAP_2GHZ4 0x00000001
2386
2387static void
2388mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2389 struct ieee80211_supported_band *band, u32 cap)
2390{
2391 int rx_streams;
2392 int tx_streams;
2393
2394 band->ht_cap.ht_supported = 1;
2395
2396 if (cap & MWL8K_CAP_MAX_AMSDU)
2397 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2398 if (cap & MWL8K_CAP_GREENFIELD)
2399 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2400 if (cap & MWL8K_CAP_AMPDU) {
2401 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2402 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2403 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2404 }
2405 if (cap & MWL8K_CAP_RX_STBC)
2406 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2407 if (cap & MWL8K_CAP_TX_STBC)
2408 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2409 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2410 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2411 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2412 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2413 if (cap & MWL8K_CAP_DELAY_BA)
2414 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2415 if (cap & MWL8K_CAP_40MHZ)
2416 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2417
2418 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2419 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2420
2421 band->ht_cap.mcs.rx_mask[0] = 0xff;
2422 if (rx_streams >= 2)
2423 band->ht_cap.mcs.rx_mask[1] = 0xff;
2424 if (rx_streams >= 3)
2425 band->ht_cap.mcs.rx_mask[2] = 0xff;
2426 band->ht_cap.mcs.rx_mask[4] = 0x01;
2427 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2428
2429 if (rx_streams != tx_streams) {
2430 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2431 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2432 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2433 }
2434}
2435
2436static void
2437mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2438{
2439 struct mwl8k_priv *priv = hw->priv;
2440
2441 if (priv->caps)
2442 return;
2443
2444 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2445 mwl8k_setup_2ghz_band(hw);
2446 if (caps & MWL8K_CAP_MIMO)
2447 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2448 }
2449
2450 if (caps & MWL8K_CAP_5GHZ) {
2451 mwl8k_setup_5ghz_band(hw);
2452 if (caps & MWL8K_CAP_MIMO)
2453 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2454 }
2455
2456 priv->caps = caps;
2457}
2458
2459static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2460{
2461 struct mwl8k_priv *priv = hw->priv;
2462 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2463 int rc;
2464 int i;
2465
2466 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2467 if (cmd == NULL)
2468 return -ENOMEM;
2469
2470 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2471 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2472
2473 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2474 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2475 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2476 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2477 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2478 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2479 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2480 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2481
2482 rc = mwl8k_post_cmd(hw, &cmd->header);
2483
2484 if (!rc) {
2485 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2486 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2487 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2488 priv->hw_rev = cmd->hw_rev;
2489 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2490 priv->ap_macids_supported = 0x00000000;
2491 priv->sta_macids_supported = 0x00000001;
2492 }
2493
2494 kfree(cmd);
2495 return rc;
2496}
2497
2498/*
2499 * CMD_GET_HW_SPEC (AP version).
2500 */
2501struct mwl8k_cmd_get_hw_spec_ap {
2502 struct mwl8k_cmd_pkt header;
2503 __u8 hw_rev;
2504 __u8 host_interface;
2505 __le16 num_wcb;
2506 __le16 num_mcaddrs;
2507 __u8 perm_addr[ETH_ALEN];
2508 __le16 region_code;
2509 __le16 num_antenna;
2510 __le32 fw_rev;
2511 __le32 wcbbase0;
2512 __le32 rxwrptr;
2513 __le32 rxrdptr;
2514 __le32 ps_cookie;
2515 __le32 wcbbase1;
2516 __le32 wcbbase2;
2517 __le32 wcbbase3;
2518 __le32 fw_api_version;
2519 __le32 caps;
2520 __le32 num_of_ampdu_queues;
2521 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2522} __packed;
2523
2524static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2525{
2526 struct mwl8k_priv *priv = hw->priv;
2527 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2528 int rc, i;
2529 u32 api_version;
2530
2531 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2532 if (cmd == NULL)
2533 return -ENOMEM;
2534
2535 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2536 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2537
2538 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2539 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2540
2541 rc = mwl8k_post_cmd(hw, &cmd->header);
2542
2543 if (!rc) {
2544 int off;
2545
2546 api_version = le32_to_cpu(cmd->fw_api_version);
2547 if (priv->device_info->fw_api_ap != api_version) {
2548 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2549 " Expected %d got %d.\n", MWL8K_NAME,
2550 priv->device_info->part_name,
2551 priv->device_info->fw_api_ap,
2552 api_version);
2553 rc = -EINVAL;
2554 goto done;
2555 }
2556 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2557 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2558 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2559 priv->hw_rev = cmd->hw_rev;
2560 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2561 priv->ap_macids_supported = 0x000000ff;
2562 priv->sta_macids_supported = 0x00000100;
2563 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2564 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2565 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2566 " but we only support %d.\n",
2567 priv->num_ampdu_queues,
2568 MWL8K_MAX_AMPDU_QUEUES);
2569 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2570 }
2571 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2572 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2573
2574 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2575 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2576
2577 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2578 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2579 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2580 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2581
2582 for (i = 0; i < priv->num_ampdu_queues; i++)
2583 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2584 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2585 }
2586
2587done:
2588 kfree(cmd);
2589 return rc;
2590}
2591
2592/*
2593 * CMD_SET_HW_SPEC.
2594 */
2595struct mwl8k_cmd_set_hw_spec {
2596 struct mwl8k_cmd_pkt header;
2597 __u8 hw_rev;
2598 __u8 host_interface;
2599 __le16 num_mcaddrs;
2600 __u8 perm_addr[ETH_ALEN];
2601 __le16 region_code;
2602 __le32 fw_rev;
2603 __le32 ps_cookie;
2604 __le32 caps;
2605 __le32 rx_queue_ptr;
2606 __le32 num_tx_queues;
2607 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2608 __le32 flags;
2609 __le32 num_tx_desc_per_queue;
2610 __le32 total_rxd;
2611} __packed;
2612
2613/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2614 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2615 * the packets that are queued for more than 500ms, will be dropped in the
2616 * hardware. This helps minimizing the issues caused due to head-of-line
2617 * blocking where a slow client can hog the bandwidth and affect traffic to a
2618 * faster client.
2619 */
2620#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2621#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2622#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2623#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2624#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2625
2626static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2627{
2628 struct mwl8k_priv *priv = hw->priv;
2629 struct mwl8k_cmd_set_hw_spec *cmd;
2630 int rc;
2631 int i;
2632
2633 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2634 if (cmd == NULL)
2635 return -ENOMEM;
2636
2637 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2638 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2639
2640 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2641 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2642 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2643
2644 /*
2645 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2646 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2647 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2648 * priority is interpreted the right way in firmware.
2649 */
2650 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2651 int j = mwl8k_tx_queues(priv) - 1 - i;
2652 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2653 }
2654
2655 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2656 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2657 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2658 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2659 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2660 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2661 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2662
2663 rc = mwl8k_post_cmd(hw, &cmd->header);
2664 kfree(cmd);
2665
2666 return rc;
2667}
2668
2669/*
2670 * CMD_MAC_MULTICAST_ADR.
2671 */
2672struct mwl8k_cmd_mac_multicast_adr {
2673 struct mwl8k_cmd_pkt header;
2674 __le16 action;
2675 __le16 numaddr;
2676 __u8 addr[][ETH_ALEN];
2677};
2678
2679#define MWL8K_ENABLE_RX_DIRECTED 0x0001
2680#define MWL8K_ENABLE_RX_MULTICAST 0x0002
2681#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2682#define MWL8K_ENABLE_RX_BROADCAST 0x0008
2683
2684static struct mwl8k_cmd_pkt *
2685__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2686 struct netdev_hw_addr_list *mc_list)
2687{
2688 struct mwl8k_priv *priv = hw->priv;
2689 struct mwl8k_cmd_mac_multicast_adr *cmd;
2690 int size;
2691 int mc_count = 0;
2692
2693 if (mc_list)
2694 mc_count = netdev_hw_addr_list_count(mc_list);
2695
2696 if (allmulti || mc_count > priv->num_mcaddrs) {
2697 allmulti = 1;
2698 mc_count = 0;
2699 }
2700
2701 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2702
2703 cmd = kzalloc(size, GFP_ATOMIC);
2704 if (cmd == NULL)
2705 return NULL;
2706
2707 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2708 cmd->header.length = cpu_to_le16(size);
2709 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2710 MWL8K_ENABLE_RX_BROADCAST);
2711
2712 if (allmulti) {
2713 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2714 } else if (mc_count) {
2715 struct netdev_hw_addr *ha;
2716 int i = 0;
2717
2718 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2719 cmd->numaddr = cpu_to_le16(mc_count);
2720 netdev_hw_addr_list_for_each(ha, mc_list) {
2721 memcpy(cmd->addr[i++], ha->addr, ETH_ALEN);
2722 }
2723 }
2724
2725 return &cmd->header;
2726}
2727
2728/*
2729 * CMD_GET_STAT.
2730 */
2731struct mwl8k_cmd_get_stat {
2732 struct mwl8k_cmd_pkt header;
2733 __le32 stats[64];
2734} __packed;
2735
2736#define MWL8K_STAT_ACK_FAILURE 9
2737#define MWL8K_STAT_RTS_FAILURE 12
2738#define MWL8K_STAT_FCS_ERROR 24
2739#define MWL8K_STAT_RTS_SUCCESS 11
2740
2741static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2742 struct ieee80211_low_level_stats *stats)
2743{
2744 struct mwl8k_cmd_get_stat *cmd;
2745 int rc;
2746
2747 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2748 if (cmd == NULL)
2749 return -ENOMEM;
2750
2751 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2752 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2753
2754 rc = mwl8k_post_cmd(hw, &cmd->header);
2755 if (!rc) {
2756 stats->dot11ACKFailureCount =
2757 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2758 stats->dot11RTSFailureCount =
2759 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2760 stats->dot11FCSErrorCount =
2761 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2762 stats->dot11RTSSuccessCount =
2763 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2764 }
2765 kfree(cmd);
2766
2767 return rc;
2768}
2769
2770/*
2771 * CMD_RADIO_CONTROL.
2772 */
2773struct mwl8k_cmd_radio_control {
2774 struct mwl8k_cmd_pkt header;
2775 __le16 action;
2776 __le16 control;
2777 __le16 radio_on;
2778} __packed;
2779
2780static int
2781mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2782{
2783 struct mwl8k_priv *priv = hw->priv;
2784 struct mwl8k_cmd_radio_control *cmd;
2785 int rc;
2786
2787 if (enable == priv->radio_on && !force)
2788 return 0;
2789
2790 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2791 if (cmd == NULL)
2792 return -ENOMEM;
2793
2794 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2795 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2796 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2797 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2798 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2799
2800 rc = mwl8k_post_cmd(hw, &cmd->header);
2801 kfree(cmd);
2802
2803 if (!rc)
2804 priv->radio_on = enable;
2805
2806 return rc;
2807}
2808
2809static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2810{
2811 return mwl8k_cmd_radio_control(hw, 0, 0);
2812}
2813
2814static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2815{
2816 return mwl8k_cmd_radio_control(hw, 1, 0);
2817}
2818
2819static int
2820mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2821{
2822 struct mwl8k_priv *priv = hw->priv;
2823
2824 priv->radio_short_preamble = short_preamble;
2825
2826 return mwl8k_cmd_radio_control(hw, 1, 1);
2827}
2828
2829/*
2830 * CMD_RF_TX_POWER.
2831 */
2832#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2833
2834struct mwl8k_cmd_rf_tx_power {
2835 struct mwl8k_cmd_pkt header;
2836 __le16 action;
2837 __le16 support_level;
2838 __le16 current_level;
2839 __le16 reserved;
2840 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2841} __packed;
2842
2843static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2844{
2845 struct mwl8k_cmd_rf_tx_power *cmd;
2846 int rc;
2847
2848 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2849 if (cmd == NULL)
2850 return -ENOMEM;
2851
2852 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2853 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2854 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2855 cmd->support_level = cpu_to_le16(dBm);
2856
2857 rc = mwl8k_post_cmd(hw, &cmd->header);
2858 kfree(cmd);
2859
2860 return rc;
2861}
2862
2863/*
2864 * CMD_TX_POWER.
2865 */
2866#define MWL8K_TX_POWER_LEVEL_TOTAL 12
2867
2868struct mwl8k_cmd_tx_power {
2869 struct mwl8k_cmd_pkt header;
2870 __le16 action;
2871 __le16 band;
2872 __le16 channel;
2873 __le16 bw;
2874 __le16 sub_ch;
2875 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2876} __packed;
2877
2878static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2879 struct ieee80211_conf *conf,
2880 unsigned short pwr)
2881{
2882 struct ieee80211_channel *channel = conf->chandef.chan;
2883 enum nl80211_channel_type channel_type =
2884 cfg80211_get_chandef_type(&conf->chandef);
2885 struct mwl8k_cmd_tx_power *cmd;
2886 int rc;
2887 int i;
2888
2889 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2890 if (cmd == NULL)
2891 return -ENOMEM;
2892
2893 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2894 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2895 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2896
2897 if (channel->band == NL80211_BAND_2GHZ)
2898 cmd->band = cpu_to_le16(0x1);
2899 else if (channel->band == NL80211_BAND_5GHZ)
2900 cmd->band = cpu_to_le16(0x4);
2901
2902 cmd->channel = cpu_to_le16(channel->hw_value);
2903
2904 if (channel_type == NL80211_CHAN_NO_HT ||
2905 channel_type == NL80211_CHAN_HT20) {
2906 cmd->bw = cpu_to_le16(0x2);
2907 } else {
2908 cmd->bw = cpu_to_le16(0x4);
2909 if (channel_type == NL80211_CHAN_HT40MINUS)
2910 cmd->sub_ch = cpu_to_le16(0x3);
2911 else if (channel_type == NL80211_CHAN_HT40PLUS)
2912 cmd->sub_ch = cpu_to_le16(0x1);
2913 }
2914
2915 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2916 cmd->power_level_list[i] = cpu_to_le16(pwr);
2917
2918 rc = mwl8k_post_cmd(hw, &cmd->header);
2919 kfree(cmd);
2920
2921 return rc;
2922}
2923
2924/*
2925 * CMD_RF_ANTENNA.
2926 */
2927struct mwl8k_cmd_rf_antenna {
2928 struct mwl8k_cmd_pkt header;
2929 __le16 antenna;
2930 __le16 mode;
2931} __packed;
2932
2933#define MWL8K_RF_ANTENNA_RX 1
2934#define MWL8K_RF_ANTENNA_TX 2
2935
2936static int
2937mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2938{
2939 struct mwl8k_cmd_rf_antenna *cmd;
2940 int rc;
2941
2942 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2943 if (cmd == NULL)
2944 return -ENOMEM;
2945
2946 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2947 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2948 cmd->antenna = cpu_to_le16(antenna);
2949 cmd->mode = cpu_to_le16(mask);
2950
2951 rc = mwl8k_post_cmd(hw, &cmd->header);
2952 kfree(cmd);
2953
2954 return rc;
2955}
2956
2957/*
2958 * CMD_SET_BEACON.
2959 */
2960struct mwl8k_cmd_set_beacon {
2961 struct mwl8k_cmd_pkt header;
2962 __le16 beacon_len;
2963 __u8 beacon[];
2964};
2965
2966static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2967 struct ieee80211_vif *vif, u8 *beacon, int len)
2968{
2969 struct mwl8k_cmd_set_beacon *cmd;
2970 int rc;
2971
2972 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2973 if (cmd == NULL)
2974 return -ENOMEM;
2975
2976 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2977 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2978 cmd->beacon_len = cpu_to_le16(len);
2979 memcpy(cmd->beacon, beacon, len);
2980
2981 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2982 kfree(cmd);
2983
2984 return rc;
2985}
2986
2987/*
2988 * CMD_SET_PRE_SCAN.
2989 */
2990struct mwl8k_cmd_set_pre_scan {
2991 struct mwl8k_cmd_pkt header;
2992} __packed;
2993
2994static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2995{
2996 struct mwl8k_cmd_set_pre_scan *cmd;
2997 int rc;
2998
2999 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3000 if (cmd == NULL)
3001 return -ENOMEM;
3002
3003 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
3004 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3005
3006 rc = mwl8k_post_cmd(hw, &cmd->header);
3007 kfree(cmd);
3008
3009 return rc;
3010}
3011
3012/*
3013 * CMD_BBP_REG_ACCESS.
3014 */
3015struct mwl8k_cmd_bbp_reg_access {
3016 struct mwl8k_cmd_pkt header;
3017 __le16 action;
3018 __le16 offset;
3019 u8 value;
3020 u8 rsrv[3];
3021} __packed;
3022
3023static int
3024mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
3025 u16 action,
3026 u16 offset,
3027 u8 *value)
3028{
3029 struct mwl8k_cmd_bbp_reg_access *cmd;
3030 int rc;
3031
3032 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3033 if (cmd == NULL)
3034 return -ENOMEM;
3035
3036 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
3037 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3038 cmd->action = cpu_to_le16(action);
3039 cmd->offset = cpu_to_le16(offset);
3040
3041 rc = mwl8k_post_cmd(hw, &cmd->header);
3042
3043 if (!rc)
3044 *value = cmd->value;
3045 else
3046 *value = 0;
3047
3048 kfree(cmd);
3049
3050 return rc;
3051}
3052
3053/*
3054 * CMD_SET_POST_SCAN.
3055 */
3056struct mwl8k_cmd_set_post_scan {
3057 struct mwl8k_cmd_pkt header;
3058 __le32 isibss;
3059 __u8 bssid[ETH_ALEN];
3060} __packed;
3061
3062static int
3063mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
3064{
3065 struct mwl8k_cmd_set_post_scan *cmd;
3066 int rc;
3067
3068 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3069 if (cmd == NULL)
3070 return -ENOMEM;
3071
3072 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3073 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3074 cmd->isibss = 0;
3075 memcpy(cmd->bssid, mac, ETH_ALEN);
3076
3077 rc = mwl8k_post_cmd(hw, &cmd->header);
3078 kfree(cmd);
3079
3080 return rc;
3081}
3082
3083static int freq_to_idx(struct mwl8k_priv *priv, int freq)
3084{
3085 struct ieee80211_supported_band *sband;
3086 int band, ch, idx = 0;
3087
3088 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3089 sband = priv->hw->wiphy->bands[band];
3090 if (!sband)
3091 continue;
3092
3093 for (ch = 0; ch < sband->n_channels; ch++, idx++)
3094 if (sband->channels[ch].center_freq == freq)
3095 goto exit;
3096 }
3097
3098exit:
3099 return idx;
3100}
3101
3102static void mwl8k_update_survey(struct mwl8k_priv *priv,
3103 struct ieee80211_channel *channel)
3104{
3105 u32 cca_cnt, rx_rdy;
3106 s8 nf = 0, idx;
3107 struct survey_info *survey;
3108
3109 idx = freq_to_idx(priv, priv->acs_chan->center_freq);
3110 if (idx >= MWL8K_NUM_CHANS) {
3111 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
3112 return;
3113 }
3114
3115 survey = &priv->survey[idx];
3116
3117 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
3118 cca_cnt /= 1000; /* uSecs to mSecs */
3119 survey->time_busy = (u64) cca_cnt;
3120
3121 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
3122 rx_rdy /= 1000; /* uSecs to mSecs */
3123 survey->time_rx = (u64) rx_rdy;
3124
3125 priv->channel_time = jiffies - priv->channel_time;
3126 survey->time = jiffies_to_msecs(priv->channel_time);
3127
3128 survey->channel = channel;
3129
3130 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
3131
3132 /* Make sure sign is negative else ACS at hostapd fails */
3133 survey->noise = nf * -1;
3134
3135 survey->filled = SURVEY_INFO_NOISE_DBM |
3136 SURVEY_INFO_TIME |
3137 SURVEY_INFO_TIME_BUSY |
3138 SURVEY_INFO_TIME_RX;
3139}
3140
3141/*
3142 * CMD_SET_RF_CHANNEL.
3143 */
3144struct mwl8k_cmd_set_rf_channel {
3145 struct mwl8k_cmd_pkt header;
3146 __le16 action;
3147 __u8 current_channel;
3148 __le32 channel_flags;
3149} __packed;
3150
3151static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3152 struct ieee80211_conf *conf)
3153{
3154 struct ieee80211_channel *channel = conf->chandef.chan;
3155 enum nl80211_channel_type channel_type =
3156 cfg80211_get_chandef_type(&conf->chandef);
3157 struct mwl8k_cmd_set_rf_channel *cmd;
3158 struct mwl8k_priv *priv = hw->priv;
3159 int rc;
3160
3161 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3162 if (cmd == NULL)
3163 return -ENOMEM;
3164
3165 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3166 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3167 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3168 cmd->current_channel = channel->hw_value;
3169
3170 if (channel->band == NL80211_BAND_2GHZ)
3171 cmd->channel_flags |= cpu_to_le32(0x00000001);
3172 else if (channel->band == NL80211_BAND_5GHZ)
3173 cmd->channel_flags |= cpu_to_le32(0x00000004);
3174
3175 if (!priv->sw_scan_start) {
3176 if (channel_type == NL80211_CHAN_NO_HT ||
3177 channel_type == NL80211_CHAN_HT20)
3178 cmd->channel_flags |= cpu_to_le32(0x00000080);
3179 else if (channel_type == NL80211_CHAN_HT40MINUS)
3180 cmd->channel_flags |= cpu_to_le32(0x000001900);
3181 else if (channel_type == NL80211_CHAN_HT40PLUS)
3182 cmd->channel_flags |= cpu_to_le32(0x000000900);
3183 } else {
3184 cmd->channel_flags |= cpu_to_le32(0x00000080);
3185 }
3186
3187 if (priv->sw_scan_start) {
3188 /* Store current channel stats
3189 * before switching to newer one.
3190 * This will be processed only for AP fw.
3191 */
3192 if (priv->channel_time != 0)
3193 mwl8k_update_survey(priv, priv->acs_chan);
3194
3195 priv->channel_time = jiffies;
3196 priv->acs_chan = channel;
3197 }
3198
3199 rc = mwl8k_post_cmd(hw, &cmd->header);
3200 kfree(cmd);
3201
3202 return rc;
3203}
3204
3205/*
3206 * CMD_SET_AID.
3207 */
3208#define MWL8K_FRAME_PROT_DISABLED 0x00
3209#define MWL8K_FRAME_PROT_11G 0x07
3210#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
3211#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
3212
3213struct mwl8k_cmd_update_set_aid {
3214 struct mwl8k_cmd_pkt header;
3215 __le16 aid;
3216
3217 /* AP's MAC address (BSSID) */
3218 __u8 bssid[ETH_ALEN];
3219 __le16 protection_mode;
3220 __u8 supp_rates[14];
3221} __packed;
3222
3223static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3224{
3225 int i;
3226 int j;
3227
3228 /*
3229 * Clear nonstandard rate 4.
3230 */
3231 mask &= 0x1fef;
3232
3233 for (i = 0, j = 0; i < 13; i++) {
3234 if (mask & (1 << i))
3235 rates[j++] = mwl8k_rates_24[i].hw_value;
3236 }
3237}
3238
3239static int
3240mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3241 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3242{
3243 struct mwl8k_cmd_update_set_aid *cmd;
3244 u16 prot_mode;
3245 int rc;
3246
3247 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3248 if (cmd == NULL)
3249 return -ENOMEM;
3250
3251 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3252 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3253 cmd->aid = cpu_to_le16(vif->cfg.aid);
3254 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3255
3256 if (vif->bss_conf.use_cts_prot) {
3257 prot_mode = MWL8K_FRAME_PROT_11G;
3258 } else {
3259 switch (vif->bss_conf.ht_operation_mode &
3260 IEEE80211_HT_OP_MODE_PROTECTION) {
3261 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3262 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3263 break;
3264 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3265 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3266 break;
3267 default:
3268 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3269 break;
3270 }
3271 }
3272 cmd->protection_mode = cpu_to_le16(prot_mode);
3273
3274 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3275
3276 rc = mwl8k_post_cmd(hw, &cmd->header);
3277 kfree(cmd);
3278
3279 return rc;
3280}
3281
3282/*
3283 * CMD_SET_RATE.
3284 */
3285struct mwl8k_cmd_set_rate {
3286 struct mwl8k_cmd_pkt header;
3287 __u8 legacy_rates[14];
3288
3289 /* Bitmap for supported MCS codes. */
3290 __u8 mcs_set[16];
3291 __u8 reserved[16];
3292} __packed;
3293
3294static int
3295mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3296 u32 legacy_rate_mask, u8 *mcs_rates)
3297{
3298 struct mwl8k_cmd_set_rate *cmd;
3299 int rc;
3300
3301 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3302 if (cmd == NULL)
3303 return -ENOMEM;
3304
3305 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3306 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3307 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3308 memcpy(cmd->mcs_set, mcs_rates, 16);
3309
3310 rc = mwl8k_post_cmd(hw, &cmd->header);
3311 kfree(cmd);
3312
3313 return rc;
3314}
3315
3316/*
3317 * CMD_FINALIZE_JOIN.
3318 */
3319#define MWL8K_FJ_BEACON_MAXLEN 128
3320
3321struct mwl8k_cmd_finalize_join {
3322 struct mwl8k_cmd_pkt header;
3323 __le32 sleep_interval; /* Number of beacon periods to sleep */
3324 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3325} __packed;
3326
3327static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3328 int framelen, int dtim)
3329{
3330 struct mwl8k_cmd_finalize_join *cmd;
3331 struct ieee80211_mgmt *payload = frame;
3332 int payload_len;
3333 int rc;
3334
3335 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3336 if (cmd == NULL)
3337 return -ENOMEM;
3338
3339 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3340 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3341 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3342
3343 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3344 if (payload_len < 0)
3345 payload_len = 0;
3346 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3347 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3348
3349 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3350
3351 rc = mwl8k_post_cmd(hw, &cmd->header);
3352 kfree(cmd);
3353
3354 return rc;
3355}
3356
3357/*
3358 * CMD_SET_RTS_THRESHOLD.
3359 */
3360struct mwl8k_cmd_set_rts_threshold {
3361 struct mwl8k_cmd_pkt header;
3362 __le16 action;
3363 __le16 threshold;
3364} __packed;
3365
3366static int
3367mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3368{
3369 struct mwl8k_cmd_set_rts_threshold *cmd;
3370 int rc;
3371
3372 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3373 if (cmd == NULL)
3374 return -ENOMEM;
3375
3376 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3377 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3378 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3379 cmd->threshold = cpu_to_le16(rts_thresh);
3380
3381 rc = mwl8k_post_cmd(hw, &cmd->header);
3382 kfree(cmd);
3383
3384 return rc;
3385}
3386
3387/*
3388 * CMD_SET_SLOT.
3389 */
3390struct mwl8k_cmd_set_slot {
3391 struct mwl8k_cmd_pkt header;
3392 __le16 action;
3393 __u8 short_slot;
3394} __packed;
3395
3396static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3397{
3398 struct mwl8k_cmd_set_slot *cmd;
3399 int rc;
3400
3401 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3402 if (cmd == NULL)
3403 return -ENOMEM;
3404
3405 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3406 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3407 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3408 cmd->short_slot = short_slot_time;
3409
3410 rc = mwl8k_post_cmd(hw, &cmd->header);
3411 kfree(cmd);
3412
3413 return rc;
3414}
3415
3416/*
3417 * CMD_SET_EDCA_PARAMS.
3418 */
3419struct mwl8k_cmd_set_edca_params {
3420 struct mwl8k_cmd_pkt header;
3421
3422 /* See MWL8K_SET_EDCA_XXX below */
3423 __le16 action;
3424
3425 /* TX opportunity in units of 32 us */
3426 __le16 txop;
3427
3428 union {
3429 struct {
3430 /* Log exponent of max contention period: 0...15 */
3431 __le32 log_cw_max;
3432
3433 /* Log exponent of min contention period: 0...15 */
3434 __le32 log_cw_min;
3435
3436 /* Adaptive interframe spacing in units of 32us */
3437 __u8 aifs;
3438
3439 /* TX queue to configure */
3440 __u8 txq;
3441 } ap;
3442 struct {
3443 /* Log exponent of max contention period: 0...15 */
3444 __u8 log_cw_max;
3445
3446 /* Log exponent of min contention period: 0...15 */
3447 __u8 log_cw_min;
3448
3449 /* Adaptive interframe spacing in units of 32us */
3450 __u8 aifs;
3451
3452 /* TX queue to configure */
3453 __u8 txq;
3454 } sta;
3455 };
3456} __packed;
3457
3458#define MWL8K_SET_EDCA_CW 0x01
3459#define MWL8K_SET_EDCA_TXOP 0x02
3460#define MWL8K_SET_EDCA_AIFS 0x04
3461
3462#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3463 MWL8K_SET_EDCA_TXOP | \
3464 MWL8K_SET_EDCA_AIFS)
3465
3466static int
3467mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3468 __u16 cw_min, __u16 cw_max,
3469 __u8 aifs, __u16 txop)
3470{
3471 struct mwl8k_priv *priv = hw->priv;
3472 struct mwl8k_cmd_set_edca_params *cmd;
3473 int rc;
3474
3475 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3476 if (cmd == NULL)
3477 return -ENOMEM;
3478
3479 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3480 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3481 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3482 cmd->txop = cpu_to_le16(txop);
3483 if (priv->ap_fw) {
3484 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3485 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3486 cmd->ap.aifs = aifs;
3487 cmd->ap.txq = qnum;
3488 } else {
3489 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3490 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3491 cmd->sta.aifs = aifs;
3492 cmd->sta.txq = qnum;
3493 }
3494
3495 rc = mwl8k_post_cmd(hw, &cmd->header);
3496 kfree(cmd);
3497
3498 return rc;
3499}
3500
3501/*
3502 * CMD_SET_WMM_MODE.
3503 */
3504struct mwl8k_cmd_set_wmm_mode {
3505 struct mwl8k_cmd_pkt header;
3506 __le16 action;
3507} __packed;
3508
3509static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3510{
3511 struct mwl8k_priv *priv = hw->priv;
3512 struct mwl8k_cmd_set_wmm_mode *cmd;
3513 int rc;
3514
3515 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3516 if (cmd == NULL)
3517 return -ENOMEM;
3518
3519 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3520 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3521 cmd->action = cpu_to_le16(!!enable);
3522
3523 rc = mwl8k_post_cmd(hw, &cmd->header);
3524 kfree(cmd);
3525
3526 if (!rc)
3527 priv->wmm_enabled = enable;
3528
3529 return rc;
3530}
3531
3532/*
3533 * CMD_MIMO_CONFIG.
3534 */
3535struct mwl8k_cmd_mimo_config {
3536 struct mwl8k_cmd_pkt header;
3537 __le32 action;
3538 __u8 rx_antenna_map;
3539 __u8 tx_antenna_map;
3540} __packed;
3541
3542static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3543{
3544 struct mwl8k_cmd_mimo_config *cmd;
3545 int rc;
3546
3547 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3548 if (cmd == NULL)
3549 return -ENOMEM;
3550
3551 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3552 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3553 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3554 cmd->rx_antenna_map = rx;
3555 cmd->tx_antenna_map = tx;
3556
3557 rc = mwl8k_post_cmd(hw, &cmd->header);
3558 kfree(cmd);
3559
3560 return rc;
3561}
3562
3563/*
3564 * CMD_USE_FIXED_RATE (STA version).
3565 */
3566struct mwl8k_cmd_use_fixed_rate_sta {
3567 struct mwl8k_cmd_pkt header;
3568 __le32 action;
3569 __le32 allow_rate_drop;
3570 __le32 num_rates;
3571 struct {
3572 __le32 is_ht_rate;
3573 __le32 enable_retry;
3574 __le32 rate;
3575 __le32 retry_count;
3576 } rate_entry[8];
3577 __le32 rate_type;
3578 __le32 reserved1;
3579 __le32 reserved2;
3580} __packed;
3581
3582#define MWL8K_USE_AUTO_RATE 0x0002
3583#define MWL8K_UCAST_RATE 0
3584
3585static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3586{
3587 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3588 int rc;
3589
3590 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3591 if (cmd == NULL)
3592 return -ENOMEM;
3593
3594 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3595 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3596 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3597 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3598
3599 rc = mwl8k_post_cmd(hw, &cmd->header);
3600 kfree(cmd);
3601
3602 return rc;
3603}
3604
3605/*
3606 * CMD_USE_FIXED_RATE (AP version).
3607 */
3608struct mwl8k_cmd_use_fixed_rate_ap {
3609 struct mwl8k_cmd_pkt header;
3610 __le32 action;
3611 __le32 allow_rate_drop;
3612 __le32 num_rates;
3613 struct mwl8k_rate_entry_ap {
3614 __le32 is_ht_rate;
3615 __le32 enable_retry;
3616 __le32 rate;
3617 __le32 retry_count;
3618 } rate_entry[4];
3619 u8 multicast_rate;
3620 u8 multicast_rate_type;
3621 u8 management_rate;
3622} __packed;
3623
3624static int
3625mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3626{
3627 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3628 int rc;
3629
3630 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3631 if (cmd == NULL)
3632 return -ENOMEM;
3633
3634 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3635 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3636 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3637 cmd->multicast_rate = mcast;
3638 cmd->management_rate = mgmt;
3639
3640 rc = mwl8k_post_cmd(hw, &cmd->header);
3641 kfree(cmd);
3642
3643 return rc;
3644}
3645
3646/*
3647 * CMD_ENABLE_SNIFFER.
3648 */
3649struct mwl8k_cmd_enable_sniffer {
3650 struct mwl8k_cmd_pkt header;
3651 __le32 action;
3652} __packed;
3653
3654static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3655{
3656 struct mwl8k_cmd_enable_sniffer *cmd;
3657 int rc;
3658
3659 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3660 if (cmd == NULL)
3661 return -ENOMEM;
3662
3663 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3664 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3665 cmd->action = cpu_to_le32(!!enable);
3666
3667 rc = mwl8k_post_cmd(hw, &cmd->header);
3668 kfree(cmd);
3669
3670 return rc;
3671}
3672
3673struct mwl8k_cmd_update_mac_addr {
3674 struct mwl8k_cmd_pkt header;
3675 union {
3676 struct {
3677 __le16 mac_type;
3678 __u8 mac_addr[ETH_ALEN];
3679 } mbss;
3680 __u8 mac_addr[ETH_ALEN];
3681 };
3682} __packed;
3683
3684#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3685#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3686#define MWL8K_MAC_TYPE_PRIMARY_AP 2
3687#define MWL8K_MAC_TYPE_SECONDARY_AP 3
3688
3689static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3690 struct ieee80211_vif *vif, u8 *mac, bool set)
3691{
3692 struct mwl8k_priv *priv = hw->priv;
3693 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3694 struct mwl8k_cmd_update_mac_addr *cmd;
3695 int mac_type;
3696 int rc;
3697
3698 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3699 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3700 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3701 if (priv->ap_fw)
3702 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3703 else
3704 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3705 else
3706 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3707 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3708 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3709 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3710 else
3711 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3712 }
3713
3714 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3715 if (cmd == NULL)
3716 return -ENOMEM;
3717
3718 if (set)
3719 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3720 else
3721 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3722
3723 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3724 if (priv->ap_fw) {
3725 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3726 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3727 } else {
3728 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3729 }
3730
3731 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3732 kfree(cmd);
3733
3734 return rc;
3735}
3736
3737/*
3738 * MWL8K_CMD_SET_MAC_ADDR.
3739 */
3740static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3741 struct ieee80211_vif *vif, u8 *mac)
3742{
3743 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3744}
3745
3746/*
3747 * MWL8K_CMD_DEL_MAC_ADDR.
3748 */
3749static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3750 struct ieee80211_vif *vif, u8 *mac)
3751{
3752 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3753}
3754
3755/*
3756 * CMD_SET_RATEADAPT_MODE.
3757 */
3758struct mwl8k_cmd_set_rate_adapt_mode {
3759 struct mwl8k_cmd_pkt header;
3760 __le16 action;
3761 __le16 mode;
3762} __packed;
3763
3764static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3765{
3766 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3767 int rc;
3768
3769 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3770 if (cmd == NULL)
3771 return -ENOMEM;
3772
3773 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3774 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3775 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3776 cmd->mode = cpu_to_le16(mode);
3777
3778 rc = mwl8k_post_cmd(hw, &cmd->header);
3779 kfree(cmd);
3780
3781 return rc;
3782}
3783
3784/*
3785 * CMD_GET_WATCHDOG_BITMAP.
3786 */
3787struct mwl8k_cmd_get_watchdog_bitmap {
3788 struct mwl8k_cmd_pkt header;
3789 u8 bitmap;
3790} __packed;
3791
3792static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3793{
3794 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3795 int rc;
3796
3797 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3798 if (cmd == NULL)
3799 return -ENOMEM;
3800
3801 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3802 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3803
3804 rc = mwl8k_post_cmd(hw, &cmd->header);
3805 if (!rc)
3806 *bitmap = cmd->bitmap;
3807
3808 kfree(cmd);
3809
3810 return rc;
3811}
3812
3813#define MWL8K_WMM_QUEUE_NUMBER 3
3814
3815static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3816 u8 idx);
3817
3818static void mwl8k_watchdog_ba_events(struct work_struct *work)
3819{
3820 int rc;
3821 u8 bitmap = 0, stream_index;
3822 struct mwl8k_ampdu_stream *streams;
3823 struct mwl8k_priv *priv =
3824 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3825 struct ieee80211_hw *hw = priv->hw;
3826 int i;
3827 u32 status = 0;
3828
3829 mwl8k_fw_lock(hw);
3830
3831 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3832 if (rc)
3833 goto done;
3834
3835 spin_lock(&priv->stream_lock);
3836
3837 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3838 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3839 if (bitmap & (1 << i)) {
3840 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3841 TOTAL_HW_TX_QUEUES;
3842 streams = &priv->ampdu[stream_index];
3843 if (streams->state == AMPDU_STREAM_ACTIVE) {
3844 ieee80211_stop_tx_ba_session(streams->sta,
3845 streams->tid);
3846 spin_unlock(&priv->stream_lock);
3847 mwl8k_destroy_ba(hw, stream_index);
3848 spin_lock(&priv->stream_lock);
3849 }
3850 }
3851 }
3852
3853 spin_unlock(&priv->stream_lock);
3854done:
3855 atomic_dec(&priv->watchdog_event_pending);
3856 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3857 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3858 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3859 mwl8k_fw_unlock(hw);
3860 return;
3861}
3862
3863
3864/*
3865 * CMD_BSS_START.
3866 */
3867struct mwl8k_cmd_bss_start {
3868 struct mwl8k_cmd_pkt header;
3869 __le32 enable;
3870} __packed;
3871
3872static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3873 struct ieee80211_vif *vif, int enable)
3874{
3875 struct mwl8k_cmd_bss_start *cmd;
3876 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3877 struct mwl8k_priv *priv = hw->priv;
3878 int rc;
3879
3880 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3881 return 0;
3882
3883 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3884 return 0;
3885
3886 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3887 if (cmd == NULL)
3888 return -ENOMEM;
3889
3890 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3891 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3892 cmd->enable = cpu_to_le32(enable);
3893
3894 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3895 kfree(cmd);
3896
3897 if (!rc) {
3898 if (enable)
3899 priv->running_bsses |= (1 << mwl8k_vif->macid);
3900 else
3901 priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3902 }
3903 return rc;
3904}
3905
3906static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3907{
3908 struct mwl8k_priv *priv = hw->priv;
3909 struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3910 struct ieee80211_vif *vif;
3911
3912 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3913 vif = mwl8k_vif->vif;
3914
3915 if (!(bitmap & (1 << mwl8k_vif->macid)))
3916 continue;
3917
3918 if (vif->type == NL80211_IFTYPE_AP)
3919 mwl8k_cmd_bss_start(hw, vif, enable);
3920 }
3921}
3922/*
3923 * CMD_BASTREAM.
3924 */
3925
3926/*
3927 * UPSTREAM is tx direction
3928 */
3929#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3930#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3931
3932enum ba_stream_action_type {
3933 MWL8K_BA_CREATE,
3934 MWL8K_BA_UPDATE,
3935 MWL8K_BA_DESTROY,
3936 MWL8K_BA_FLUSH,
3937 MWL8K_BA_CHECK,
3938};
3939
3940
3941struct mwl8k_create_ba_stream {
3942 __le32 flags;
3943 __le32 idle_thrs;
3944 __le32 bar_thrs;
3945 __le32 window_size;
3946 u8 peer_mac_addr[6];
3947 u8 dialog_token;
3948 u8 tid;
3949 u8 queue_id;
3950 u8 param_info;
3951 __le32 ba_context;
3952 u8 reset_seq_no_flag;
3953 __le16 curr_seq_no;
3954 u8 sta_src_mac_addr[6];
3955} __packed;
3956
3957struct mwl8k_destroy_ba_stream {
3958 __le32 flags;
3959 __le32 ba_context;
3960} __packed;
3961
3962struct mwl8k_cmd_bastream {
3963 struct mwl8k_cmd_pkt header;
3964 __le32 action;
3965 union {
3966 struct mwl8k_create_ba_stream create_params;
3967 struct mwl8k_destroy_ba_stream destroy_params;
3968 };
3969} __packed;
3970
3971static int
3972mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3973 struct ieee80211_vif *vif)
3974{
3975 struct mwl8k_cmd_bastream *cmd;
3976 int rc;
3977
3978 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3979 if (cmd == NULL)
3980 return -ENOMEM;
3981
3982 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3983 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3984
3985 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3986
3987 cmd->create_params.queue_id = stream->idx;
3988 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3989 ETH_ALEN);
3990 cmd->create_params.tid = stream->tid;
3991
3992 cmd->create_params.flags =
3993 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3994 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3995
3996 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3997
3998 kfree(cmd);
3999
4000 return rc;
4001}
4002
4003static int
4004mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
4005 u8 buf_size, struct ieee80211_vif *vif)
4006{
4007 struct mwl8k_cmd_bastream *cmd;
4008 int rc;
4009
4010 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4011 if (cmd == NULL)
4012 return -ENOMEM;
4013
4014
4015 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4016 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4017
4018 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
4019
4020 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
4021 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
4022 cmd->create_params.queue_id = stream->idx;
4023
4024 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
4025 cmd->create_params.tid = stream->tid;
4026 cmd->create_params.curr_seq_no = cpu_to_le16(0);
4027 cmd->create_params.reset_seq_no_flag = 1;
4028
4029 cmd->create_params.param_info =
4030 (stream->sta->deflink.ht_cap.ampdu_factor &
4031 IEEE80211_HT_AMPDU_PARM_FACTOR) |
4032 ((stream->sta->deflink.ht_cap.ampdu_density << 2) &
4033 IEEE80211_HT_AMPDU_PARM_DENSITY);
4034
4035 cmd->create_params.flags =
4036 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
4037 BASTREAM_FLAG_DIRECTION_UPSTREAM);
4038
4039 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4040
4041 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
4042 stream->sta->addr, stream->tid);
4043 kfree(cmd);
4044
4045 return rc;
4046}
4047
4048static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
4049 u8 idx)
4050{
4051 struct mwl8k_cmd_bastream *cmd;
4052
4053 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4054 if (cmd == NULL)
4055 return;
4056
4057 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4058 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4059 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
4060
4061 cmd->destroy_params.ba_context = cpu_to_le32(idx);
4062 mwl8k_post_cmd(hw, &cmd->header);
4063
4064 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
4065
4066 kfree(cmd);
4067}
4068
4069/*
4070 * CMD_SET_NEW_STN.
4071 */
4072struct mwl8k_cmd_set_new_stn {
4073 struct mwl8k_cmd_pkt header;
4074 __le16 aid;
4075 __u8 mac_addr[6];
4076 __le16 stn_id;
4077 __le16 action;
4078 __le16 rsvd;
4079 __le32 legacy_rates;
4080 __u8 ht_rates[4];
4081 __le16 cap_info;
4082 __le16 ht_capabilities_info;
4083 __u8 mac_ht_param_info;
4084 __u8 rev;
4085 __u8 control_channel;
4086 __u8 add_channel;
4087 __le16 op_mode;
4088 __le16 stbc;
4089 __u8 add_qos_info;
4090 __u8 is_qos_sta;
4091 __le32 fw_sta_ptr;
4092} __packed;
4093
4094#define MWL8K_STA_ACTION_ADD 0
4095#define MWL8K_STA_ACTION_REMOVE 2
4096
4097static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
4098 struct ieee80211_vif *vif,
4099 struct ieee80211_sta *sta)
4100{
4101 struct mwl8k_cmd_set_new_stn *cmd;
4102 u32 rates;
4103 int rc;
4104
4105 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4106 if (cmd == NULL)
4107 return -ENOMEM;
4108
4109 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4110 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4111 cmd->aid = cpu_to_le16(sta->aid);
4112 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
4113 cmd->stn_id = cpu_to_le16(sta->aid);
4114 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
4115 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4116 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];
4117 else
4118 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
4119 cmd->legacy_rates = cpu_to_le32(rates);
4120 if (sta->deflink.ht_cap.ht_supported) {
4121 cmd->ht_rates[0] = sta->deflink.ht_cap.mcs.rx_mask[0];
4122 cmd->ht_rates[1] = sta->deflink.ht_cap.mcs.rx_mask[1];
4123 cmd->ht_rates[2] = sta->deflink.ht_cap.mcs.rx_mask[2];
4124 cmd->ht_rates[3] = sta->deflink.ht_cap.mcs.rx_mask[3];
4125 cmd->ht_capabilities_info = cpu_to_le16(sta->deflink.ht_cap.cap);
4126 cmd->mac_ht_param_info = (sta->deflink.ht_cap.ampdu_factor & 3) |
4127 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);
4128 cmd->is_qos_sta = 1;
4129 }
4130
4131 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4132 kfree(cmd);
4133
4134 return rc;
4135}
4136
4137static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
4138 struct ieee80211_vif *vif)
4139{
4140 struct mwl8k_cmd_set_new_stn *cmd;
4141 int rc;
4142
4143 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4144 if (cmd == NULL)
4145 return -ENOMEM;
4146
4147 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4148 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4149 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4150
4151 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4152 kfree(cmd);
4153
4154 return rc;
4155}
4156
4157static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4158 struct ieee80211_vif *vif, u8 *addr)
4159{
4160 struct mwl8k_cmd_set_new_stn *cmd;
4161 struct mwl8k_priv *priv = hw->priv;
4162 int rc, i;
4163 u8 idx;
4164
4165 spin_lock(&priv->stream_lock);
4166 /* Destroy any active ampdu streams for this sta */
4167 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4168 struct mwl8k_ampdu_stream *s;
4169 s = &priv->ampdu[i];
4170 if (s->state != AMPDU_NO_STREAM) {
4171 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4172 if (s->state == AMPDU_STREAM_ACTIVE) {
4173 idx = s->idx;
4174 spin_unlock(&priv->stream_lock);
4175 mwl8k_destroy_ba(hw, idx);
4176 spin_lock(&priv->stream_lock);
4177 } else if (s->state == AMPDU_STREAM_NEW) {
4178 mwl8k_remove_stream(hw, s);
4179 }
4180 }
4181 }
4182 }
4183
4184 spin_unlock(&priv->stream_lock);
4185
4186 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4187 if (cmd == NULL)
4188 return -ENOMEM;
4189
4190 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4191 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4192 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4193 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4194
4195 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4196 kfree(cmd);
4197
4198 return rc;
4199}
4200
4201/*
4202 * CMD_UPDATE_ENCRYPTION.
4203 */
4204
4205#define MAX_ENCR_KEY_LENGTH 16
4206#define MIC_KEY_LENGTH 8
4207
4208struct mwl8k_cmd_update_encryption {
4209 struct mwl8k_cmd_pkt header;
4210
4211 __le32 action;
4212 __le32 reserved;
4213 __u8 mac_addr[6];
4214 __u8 encr_type;
4215
4216} __packed;
4217
4218struct mwl8k_cmd_set_key {
4219 struct mwl8k_cmd_pkt header;
4220
4221 __le32 action;
4222 __le32 reserved;
4223 __le16 length;
4224 __le16 key_type_id;
4225 __le32 key_info;
4226 __le32 key_id;
4227 __le16 key_len;
4228 struct {
4229 __u8 key_material[MAX_ENCR_KEY_LENGTH];
4230 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4231 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4232 } tkip;
4233 __le16 tkip_rsc_low;
4234 __le32 tkip_rsc_high;
4235 __le16 tkip_tsc_low;
4236 __le32 tkip_tsc_high;
4237 __u8 mac_addr[6];
4238} __packed;
4239
4240enum {
4241 MWL8K_ENCR_ENABLE,
4242 MWL8K_ENCR_SET_KEY,
4243 MWL8K_ENCR_REMOVE_KEY,
4244 MWL8K_ENCR_SET_GROUP_KEY,
4245};
4246
4247#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
4248#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
4249#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
4250#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
4251#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
4252
4253enum {
4254 MWL8K_ALG_WEP,
4255 MWL8K_ALG_TKIP,
4256 MWL8K_ALG_CCMP,
4257};
4258
4259#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
4260#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
4261#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
4262#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
4263#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
4264
4265static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4266 struct ieee80211_vif *vif,
4267 u8 *addr,
4268 u8 encr_type)
4269{
4270 struct mwl8k_cmd_update_encryption *cmd;
4271 int rc;
4272
4273 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4274 if (cmd == NULL)
4275 return -ENOMEM;
4276
4277 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4278 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4279 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4280 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4281 cmd->encr_type = encr_type;
4282
4283 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4284 kfree(cmd);
4285
4286 return rc;
4287}
4288
4289static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4290 u8 *addr,
4291 struct ieee80211_key_conf *key)
4292{
4293 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4294 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4295 cmd->length = cpu_to_le16(sizeof(*cmd) -
4296 offsetof(struct mwl8k_cmd_set_key, length));
4297 cmd->key_id = cpu_to_le32(key->keyidx);
4298 cmd->key_len = cpu_to_le16(key->keylen);
4299 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4300
4301 switch (key->cipher) {
4302 case WLAN_CIPHER_SUITE_WEP40:
4303 case WLAN_CIPHER_SUITE_WEP104:
4304 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4305 if (key->keyidx == 0)
4306 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4307
4308 break;
4309 case WLAN_CIPHER_SUITE_TKIP:
4310 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4311 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4312 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4313 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4314 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4315 | MWL8K_KEY_FLAG_TSC_VALID);
4316 break;
4317 case WLAN_CIPHER_SUITE_CCMP:
4318 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4319 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4320 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4321 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4322 break;
4323 default:
4324 return -ENOTSUPP;
4325 }
4326
4327 return 0;
4328}
4329
4330static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4331 struct ieee80211_vif *vif,
4332 u8 *addr,
4333 struct ieee80211_key_conf *key)
4334{
4335 struct mwl8k_cmd_set_key *cmd;
4336 int rc;
4337 int keymlen;
4338 u32 action;
4339 u8 idx;
4340 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4341
4342 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4343 if (cmd == NULL)
4344 return -ENOMEM;
4345
4346 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4347 if (rc < 0)
4348 goto done;
4349
4350 idx = key->keyidx;
4351
4352 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4353 action = MWL8K_ENCR_SET_KEY;
4354 else
4355 action = MWL8K_ENCR_SET_GROUP_KEY;
4356
4357 switch (key->cipher) {
4358 case WLAN_CIPHER_SUITE_WEP40:
4359 case WLAN_CIPHER_SUITE_WEP104:
4360 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4361 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4362 sizeof(*key) + key->keylen);
4363 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4364 }
4365
4366 keymlen = key->keylen;
4367 action = MWL8K_ENCR_SET_KEY;
4368 break;
4369 case WLAN_CIPHER_SUITE_TKIP:
4370 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4371 break;
4372 case WLAN_CIPHER_SUITE_CCMP:
4373 keymlen = key->keylen;
4374 break;
4375 default:
4376 rc = -ENOTSUPP;
4377 goto done;
4378 }
4379
4380 memcpy(&cmd->tkip, key->key, keymlen);
4381 cmd->action = cpu_to_le32(action);
4382
4383 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4384done:
4385 kfree(cmd);
4386
4387 return rc;
4388}
4389
4390static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4391 struct ieee80211_vif *vif,
4392 u8 *addr,
4393 struct ieee80211_key_conf *key)
4394{
4395 struct mwl8k_cmd_set_key *cmd;
4396 int rc;
4397 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4398
4399 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4400 if (cmd == NULL)
4401 return -ENOMEM;
4402
4403 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4404 if (rc < 0)
4405 goto done;
4406
4407 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4408 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4409 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4410
4411 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4412
4413 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4414done:
4415 kfree(cmd);
4416
4417 return rc;
4418}
4419
4420static int mwl8k_set_key(struct ieee80211_hw *hw,
4421 enum set_key_cmd cmd_param,
4422 struct ieee80211_vif *vif,
4423 struct ieee80211_sta *sta,
4424 struct ieee80211_key_conf *key)
4425{
4426 int rc = 0;
4427 u8 encr_type;
4428 u8 *addr;
4429 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4430 struct mwl8k_priv *priv = hw->priv;
4431
4432 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4433 return -EOPNOTSUPP;
4434
4435 if (sta == NULL)
4436 addr = vif->addr;
4437 else
4438 addr = sta->addr;
4439
4440 if (cmd_param == SET_KEY) {
4441 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4442 if (rc)
4443 goto out;
4444
4445 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4446 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4447 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4448 else
4449 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4450
4451 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4452 encr_type);
4453 if (rc)
4454 goto out;
4455
4456 mwl8k_vif->is_hw_crypto_enabled = true;
4457
4458 } else {
4459 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4460
4461 if (rc)
4462 goto out;
4463 }
4464out:
4465 return rc;
4466}
4467
4468/*
4469 * CMD_UPDATE_STADB.
4470 */
4471struct ewc_ht_info {
4472 __le16 control1;
4473 __le16 control2;
4474 __le16 control3;
4475} __packed;
4476
4477struct peer_capability_info {
4478 /* Peer type - AP vs. STA. */
4479 __u8 peer_type;
4480
4481 /* Basic 802.11 capabilities from assoc resp. */
4482 __le16 basic_caps;
4483
4484 /* Set if peer supports 802.11n high throughput (HT). */
4485 __u8 ht_support;
4486
4487 /* Valid if HT is supported. */
4488 __le16 ht_caps;
4489 __u8 extended_ht_caps;
4490 struct ewc_ht_info ewc_info;
4491
4492 /* Legacy rate table. Intersection of our rates and peer rates. */
4493 __u8 legacy_rates[12];
4494
4495 /* HT rate table. Intersection of our rates and peer rates. */
4496 __u8 ht_rates[16];
4497 __u8 pad[16];
4498
4499 /* If set, interoperability mode, no proprietary extensions. */
4500 __u8 interop;
4501 __u8 pad2;
4502 __u8 station_id;
4503 __le16 amsdu_enabled;
4504} __packed;
4505
4506struct mwl8k_cmd_update_stadb {
4507 struct mwl8k_cmd_pkt header;
4508
4509 /* See STADB_ACTION_TYPE */
4510 __le32 action;
4511
4512 /* Peer MAC address */
4513 __u8 peer_addr[ETH_ALEN];
4514
4515 __le32 reserved;
4516
4517 /* Peer info - valid during add/update. */
4518 struct peer_capability_info peer_info;
4519} __packed;
4520
4521#define MWL8K_STA_DB_MODIFY_ENTRY 1
4522#define MWL8K_STA_DB_DEL_ENTRY 2
4523
4524/* Peer Entry flags - used to define the type of the peer node */
4525#define MWL8K_PEER_TYPE_ACCESSPOINT 2
4526
4527static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4528 struct ieee80211_vif *vif,
4529 struct ieee80211_sta *sta)
4530{
4531 struct mwl8k_cmd_update_stadb *cmd;
4532 struct peer_capability_info *p;
4533 u32 rates;
4534 int rc;
4535
4536 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4537 if (cmd == NULL)
4538 return -ENOMEM;
4539
4540 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4541 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4542 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4543 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4544
4545 p = &cmd->peer_info;
4546 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4547 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4548 p->ht_support = sta->deflink.ht_cap.ht_supported;
4549 p->ht_caps = cpu_to_le16(sta->deflink.ht_cap.cap);
4550 p->extended_ht_caps = (sta->deflink.ht_cap.ampdu_factor & 3) |
4551 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);
4552 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4553 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];
4554 else
4555 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
4556 legacy_rate_mask_to_array(p->legacy_rates, rates);
4557 memcpy(p->ht_rates, &sta->deflink.ht_cap.mcs, 16);
4558 p->interop = 1;
4559 p->amsdu_enabled = 0;
4560
4561 rc = mwl8k_post_cmd(hw, &cmd->header);
4562 if (!rc)
4563 rc = p->station_id;
4564 kfree(cmd);
4565
4566 return rc;
4567}
4568
4569static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4570 struct ieee80211_vif *vif, u8 *addr)
4571{
4572 struct mwl8k_cmd_update_stadb *cmd;
4573 int rc;
4574
4575 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4576 if (cmd == NULL)
4577 return -ENOMEM;
4578
4579 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4580 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4581 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4582 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4583
4584 rc = mwl8k_post_cmd(hw, &cmd->header);
4585 kfree(cmd);
4586
4587 return rc;
4588}
4589
4590
4591/*
4592 * Interrupt handling.
4593 */
4594static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4595{
4596 struct ieee80211_hw *hw = dev_id;
4597 struct mwl8k_priv *priv = hw->priv;
4598 u32 status;
4599
4600 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4601 if (!status)
4602 return IRQ_NONE;
4603
4604 if (status & MWL8K_A2H_INT_TX_DONE) {
4605 status &= ~MWL8K_A2H_INT_TX_DONE;
4606 tasklet_schedule(&priv->poll_tx_task);
4607 }
4608
4609 if (status & MWL8K_A2H_INT_RX_READY) {
4610 status &= ~MWL8K_A2H_INT_RX_READY;
4611 tasklet_schedule(&priv->poll_rx_task);
4612 }
4613
4614 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4615 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4616 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4617
4618 atomic_inc(&priv->watchdog_event_pending);
4619 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4620 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4621 }
4622
4623 if (status)
4624 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4625
4626 if (status & MWL8K_A2H_INT_OPC_DONE) {
4627 if (priv->hostcmd_wait != NULL)
4628 complete(priv->hostcmd_wait);
4629 }
4630
4631 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4632 if (!mutex_is_locked(&priv->fw_mutex) &&
4633 priv->radio_on && priv->pending_tx_pkts)
4634 mwl8k_tx_start(priv);
4635 }
4636
4637 return IRQ_HANDLED;
4638}
4639
4640static void mwl8k_tx_poll(struct tasklet_struct *t)
4641{
4642 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task);
4643 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4644 int limit;
4645 int i;
4646
4647 limit = 32;
4648
4649 spin_lock(&priv->tx_lock);
4650
4651 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4652 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4653
4654 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4655 complete(priv->tx_wait);
4656 priv->tx_wait = NULL;
4657 }
4658
4659 spin_unlock(&priv->tx_lock);
4660
4661 if (limit) {
4662 writel(~MWL8K_A2H_INT_TX_DONE,
4663 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4664 } else {
4665 tasklet_schedule(&priv->poll_tx_task);
4666 }
4667}
4668
4669static void mwl8k_rx_poll(struct tasklet_struct *t)
4670{
4671 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task);
4672 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4673 int limit;
4674
4675 limit = 32;
4676 limit -= rxq_process(hw, 0, limit);
4677 limit -= rxq_refill(hw, 0, limit);
4678
4679 if (limit) {
4680 writel(~MWL8K_A2H_INT_RX_READY,
4681 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4682 } else {
4683 tasklet_schedule(&priv->poll_rx_task);
4684 }
4685}
4686
4687
4688/*
4689 * Core driver operations.
4690 */
4691static void mwl8k_tx(struct ieee80211_hw *hw,
4692 struct ieee80211_tx_control *control,
4693 struct sk_buff *skb)
4694{
4695 struct mwl8k_priv *priv = hw->priv;
4696 int index = skb_get_queue_mapping(skb);
4697
4698 if (!priv->radio_on) {
4699 wiphy_debug(hw->wiphy,
4700 "dropped TX frame since radio disabled\n");
4701 dev_kfree_skb(skb);
4702 return;
4703 }
4704
4705 mwl8k_txq_xmit(hw, index, control->sta, skb);
4706}
4707
4708static int mwl8k_start(struct ieee80211_hw *hw)
4709{
4710 struct mwl8k_priv *priv = hw->priv;
4711 int rc;
4712
4713 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4714 IRQF_SHARED, MWL8K_NAME, hw);
4715 if (rc) {
4716 priv->irq = -1;
4717 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4718 return -EIO;
4719 }
4720 priv->irq = priv->pdev->irq;
4721
4722 /* Enable TX reclaim and RX tasklets. */
4723 tasklet_enable(&priv->poll_tx_task);
4724 tasklet_enable(&priv->poll_rx_task);
4725
4726 /* Enable interrupts */
4727 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4728 iowrite32(MWL8K_A2H_EVENTS,
4729 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4730
4731 rc = mwl8k_fw_lock(hw);
4732 if (!rc) {
4733 rc = mwl8k_cmd_radio_enable(hw);
4734
4735 if (!priv->ap_fw) {
4736 if (!rc)
4737 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4738
4739 if (!rc)
4740 rc = mwl8k_cmd_set_pre_scan(hw);
4741
4742 if (!rc)
4743 rc = mwl8k_cmd_set_post_scan(hw,
4744 "\x00\x00\x00\x00\x00\x00");
4745 }
4746
4747 if (!rc)
4748 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4749
4750 if (!rc)
4751 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4752
4753 mwl8k_fw_unlock(hw);
4754 }
4755
4756 if (rc) {
4757 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4758 free_irq(priv->pdev->irq, hw);
4759 priv->irq = -1;
4760 tasklet_disable(&priv->poll_tx_task);
4761 tasklet_disable(&priv->poll_rx_task);
4762 } else {
4763 ieee80211_wake_queues(hw);
4764 }
4765
4766 return rc;
4767}
4768
4769static void mwl8k_stop(struct ieee80211_hw *hw)
4770{
4771 struct mwl8k_priv *priv = hw->priv;
4772 int i;
4773
4774 if (!priv->hw_restart_in_progress)
4775 mwl8k_cmd_radio_disable(hw);
4776
4777 ieee80211_stop_queues(hw);
4778
4779 /* Disable interrupts */
4780 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4781 if (priv->irq != -1) {
4782 free_irq(priv->pdev->irq, hw);
4783 priv->irq = -1;
4784 }
4785
4786 /* Stop finalize join worker */
4787 cancel_work_sync(&priv->finalize_join_worker);
4788 cancel_work_sync(&priv->watchdog_ba_handle);
4789 if (priv->beacon_skb != NULL)
4790 dev_kfree_skb(priv->beacon_skb);
4791
4792 /* Stop TX reclaim and RX tasklets. */
4793 tasklet_disable(&priv->poll_tx_task);
4794 tasklet_disable(&priv->poll_rx_task);
4795
4796 /* Return all skbs to mac80211 */
4797 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4798 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4799}
4800
4801static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4802
4803static int mwl8k_add_interface(struct ieee80211_hw *hw,
4804 struct ieee80211_vif *vif)
4805{
4806 struct mwl8k_priv *priv = hw->priv;
4807 struct mwl8k_vif *mwl8k_vif;
4808 u32 macids_supported;
4809 int macid, rc;
4810 struct mwl8k_device_info *di;
4811
4812 /*
4813 * Reject interface creation if sniffer mode is active, as
4814 * STA operation is mutually exclusive with hardware sniffer
4815 * mode. (Sniffer mode is only used on STA firmware.)
4816 */
4817 if (priv->sniffer_enabled) {
4818 wiphy_info(hw->wiphy,
4819 "unable to create STA interface because sniffer mode is enabled\n");
4820 return -EINVAL;
4821 }
4822
4823 di = priv->device_info;
4824 switch (vif->type) {
4825 case NL80211_IFTYPE_AP:
4826 if (!priv->ap_fw && di->fw_image_ap) {
4827 /* we must load the ap fw to meet this request */
4828 if (!list_empty(&priv->vif_list))
4829 return -EBUSY;
4830 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4831 if (rc)
4832 return rc;
4833 }
4834 macids_supported = priv->ap_macids_supported;
4835 break;
4836 case NL80211_IFTYPE_STATION:
4837 if (priv->ap_fw && di->fw_image_sta) {
4838 if (!list_empty(&priv->vif_list)) {
4839 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4840 "Adding STA interface for WDS");
4841 } else {
4842 /* we must load the sta fw to
4843 * meet this request.
4844 */
4845 rc = mwl8k_reload_firmware(hw,
4846 di->fw_image_sta);
4847 if (rc)
4848 return rc;
4849 }
4850 }
4851 macids_supported = priv->sta_macids_supported;
4852 break;
4853 default:
4854 return -EINVAL;
4855 }
4856
4857 macid = ffs(macids_supported & ~priv->macids_used);
4858 if (!macid--)
4859 return -EBUSY;
4860
4861 /* Setup driver private area. */
4862 mwl8k_vif = MWL8K_VIF(vif);
4863 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4864 mwl8k_vif->vif = vif;
4865 mwl8k_vif->macid = macid;
4866 mwl8k_vif->seqno = 0;
4867 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4868 mwl8k_vif->is_hw_crypto_enabled = false;
4869
4870 /* Set the mac address. */
4871 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4872
4873 if (vif->type == NL80211_IFTYPE_AP)
4874 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4875
4876 priv->macids_used |= 1 << mwl8k_vif->macid;
4877 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4878
4879 return 0;
4880}
4881
4882static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4883{
4884 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4885 if (!priv->macids_used)
4886 return;
4887
4888 priv->macids_used &= ~(1 << vif->macid);
4889 list_del(&vif->list);
4890}
4891
4892static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4893 struct ieee80211_vif *vif)
4894{
4895 struct mwl8k_priv *priv = hw->priv;
4896 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4897
4898 if (vif->type == NL80211_IFTYPE_AP)
4899 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4900
4901 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4902
4903 mwl8k_remove_vif(priv, mwl8k_vif);
4904}
4905
4906static void mwl8k_hw_restart_work(struct work_struct *work)
4907{
4908 struct mwl8k_priv *priv =
4909 container_of(work, struct mwl8k_priv, fw_reload);
4910 struct ieee80211_hw *hw = priv->hw;
4911 struct mwl8k_device_info *di;
4912 int rc;
4913
4914 /* If some command is waiting for a response, clear it */
4915 if (priv->hostcmd_wait != NULL) {
4916 complete(priv->hostcmd_wait);
4917 priv->hostcmd_wait = NULL;
4918 }
4919
4920 priv->hw_restart_owner = current;
4921 di = priv->device_info;
4922 mwl8k_fw_lock(hw);
4923
4924 if (priv->ap_fw)
4925 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4926 else
4927 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4928
4929 if (rc)
4930 goto fail;
4931
4932 priv->hw_restart_owner = NULL;
4933 priv->hw_restart_in_progress = false;
4934
4935 /*
4936 * This unlock will wake up the queues and
4937 * also opens the command path for other
4938 * commands
4939 */
4940 mwl8k_fw_unlock(hw);
4941
4942 ieee80211_restart_hw(hw);
4943
4944 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4945
4946 return;
4947fail:
4948 mwl8k_fw_unlock(hw);
4949
4950 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4951}
4952
4953static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4954{
4955 struct ieee80211_conf *conf = &hw->conf;
4956 struct mwl8k_priv *priv = hw->priv;
4957 int rc;
4958
4959 rc = mwl8k_fw_lock(hw);
4960 if (rc)
4961 return rc;
4962
4963 if (conf->flags & IEEE80211_CONF_IDLE)
4964 rc = mwl8k_cmd_radio_disable(hw);
4965 else
4966 rc = mwl8k_cmd_radio_enable(hw);
4967 if (rc)
4968 goto out;
4969
4970 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4971 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4972 if (rc)
4973 goto out;
4974 }
4975
4976 if (conf->power_level > 18)
4977 conf->power_level = 18;
4978
4979 if (priv->ap_fw) {
4980
4981 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4982 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4983 if (rc)
4984 goto out;
4985 }
4986
4987
4988 } else {
4989 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4990 if (rc)
4991 goto out;
4992 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4993 }
4994
4995out:
4996 mwl8k_fw_unlock(hw);
4997
4998 return rc;
4999}
5000
5001static void
5002mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5003 struct ieee80211_bss_conf *info, u32 changed)
5004{
5005 struct mwl8k_priv *priv = hw->priv;
5006 u32 ap_legacy_rates = 0;
5007 u8 ap_mcs_rates[16];
5008 int rc;
5009
5010 if (mwl8k_fw_lock(hw))
5011 return;
5012
5013 /*
5014 * No need to capture a beacon if we're no longer associated.
5015 */
5016 if ((changed & BSS_CHANGED_ASSOC) && !vif->cfg.assoc)
5017 priv->capture_beacon = false;
5018
5019 /*
5020 * Get the AP's legacy and MCS rates.
5021 */
5022 if (vif->cfg.assoc) {
5023 struct ieee80211_sta *ap;
5024
5025 rcu_read_lock();
5026
5027 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
5028 if (ap == NULL) {
5029 rcu_read_unlock();
5030 goto out;
5031 }
5032
5033 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) {
5034 ap_legacy_rates = ap->deflink.supp_rates[NL80211_BAND_2GHZ];
5035 } else {
5036 ap_legacy_rates =
5037 ap->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
5038 }
5039 memcpy(ap_mcs_rates, &ap->deflink.ht_cap.mcs, 16);
5040
5041 rcu_read_unlock();
5042
5043 if (changed & BSS_CHANGED_ASSOC) {
5044 if (!priv->ap_fw) {
5045 rc = mwl8k_cmd_set_rate(hw, vif,
5046 ap_legacy_rates,
5047 ap_mcs_rates);
5048 if (rc)
5049 goto out;
5050
5051 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
5052 if (rc)
5053 goto out;
5054 } else {
5055 int idx;
5056 int rate;
5057
5058 /* Use AP firmware specific rate command.
5059 */
5060 idx = ffs(vif->bss_conf.basic_rates);
5061 if (idx)
5062 idx--;
5063
5064 if (hw->conf.chandef.chan->band ==
5065 NL80211_BAND_2GHZ)
5066 rate = mwl8k_rates_24[idx].hw_value;
5067 else
5068 rate = mwl8k_rates_50[idx].hw_value;
5069
5070 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5071 }
5072 }
5073 }
5074
5075 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5076 rc = mwl8k_set_radio_preamble(hw,
5077 vif->bss_conf.use_short_preamble);
5078 if (rc)
5079 goto out;
5080 }
5081
5082 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
5083 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
5084 if (rc)
5085 goto out;
5086 }
5087
5088 if (vif->cfg.assoc && !priv->ap_fw &&
5089 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
5090 BSS_CHANGED_HT))) {
5091 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
5092 if (rc)
5093 goto out;
5094 }
5095
5096 if (vif->cfg.assoc &&
5097 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
5098 /*
5099 * Finalize the join. Tell rx handler to process
5100 * next beacon from our BSSID.
5101 */
5102 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
5103 priv->capture_beacon = true;
5104 }
5105
5106out:
5107 mwl8k_fw_unlock(hw);
5108}
5109
5110static void
5111mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5112 struct ieee80211_bss_conf *info, u32 changed)
5113{
5114 int rc;
5115
5116 if (mwl8k_fw_lock(hw))
5117 return;
5118
5119 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5120 rc = mwl8k_set_radio_preamble(hw,
5121 vif->bss_conf.use_short_preamble);
5122 if (rc)
5123 goto out;
5124 }
5125
5126 if (changed & BSS_CHANGED_BASIC_RATES) {
5127 int idx;
5128 int rate;
5129
5130 /*
5131 * Use lowest supported basic rate for multicasts
5132 * and management frames (such as probe responses --
5133 * beacons will always go out at 1 Mb/s).
5134 */
5135 idx = ffs(vif->bss_conf.basic_rates);
5136 if (idx)
5137 idx--;
5138
5139 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
5140 rate = mwl8k_rates_24[idx].hw_value;
5141 else
5142 rate = mwl8k_rates_50[idx].hw_value;
5143
5144 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5145 }
5146
5147 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
5148 struct sk_buff *skb;
5149
5150 skb = ieee80211_beacon_get(hw, vif, 0);
5151 if (skb != NULL) {
5152 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5153 kfree_skb(skb);
5154 }
5155 }
5156
5157 if (changed & BSS_CHANGED_BEACON_ENABLED)
5158 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5159
5160out:
5161 mwl8k_fw_unlock(hw);
5162}
5163
5164static void
5165mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5166 struct ieee80211_bss_conf *info, u64 changed)
5167{
5168 if (vif->type == NL80211_IFTYPE_STATION)
5169 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5170 if (vif->type == NL80211_IFTYPE_AP)
5171 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5172}
5173
5174static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5175 struct netdev_hw_addr_list *mc_list)
5176{
5177 struct mwl8k_cmd_pkt *cmd;
5178
5179 /*
5180 * Synthesize and return a command packet that programs the
5181 * hardware multicast address filter. At this point we don't
5182 * know whether FIF_ALLMULTI is being requested, but if it is,
5183 * we'll end up throwing this packet away and creating a new
5184 * one in mwl8k_configure_filter().
5185 */
5186 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5187
5188 return (unsigned long)cmd;
5189}
5190
5191static int
5192mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5193 unsigned int changed_flags,
5194 unsigned int *total_flags)
5195{
5196 struct mwl8k_priv *priv = hw->priv;
5197
5198 /*
5199 * Hardware sniffer mode is mutually exclusive with STA
5200 * operation, so refuse to enable sniffer mode if a STA
5201 * interface is active.
5202 */
5203 if (!list_empty(&priv->vif_list)) {
5204 if (net_ratelimit())
5205 wiphy_info(hw->wiphy,
5206 "not enabling sniffer mode because STA interface is active\n");
5207 return 0;
5208 }
5209
5210 if (!priv->sniffer_enabled) {
5211 if (mwl8k_cmd_enable_sniffer(hw, 1))
5212 return 0;
5213 priv->sniffer_enabled = true;
5214 }
5215
5216 *total_flags &= FIF_ALLMULTI |
5217 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5218 FIF_OTHER_BSS;
5219
5220 return 1;
5221}
5222
5223static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5224{
5225 if (!list_empty(&priv->vif_list))
5226 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5227
5228 return NULL;
5229}
5230
5231static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5232 unsigned int changed_flags,
5233 unsigned int *total_flags,
5234 u64 multicast)
5235{
5236 struct mwl8k_priv *priv = hw->priv;
5237 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5238
5239 /*
5240 * AP firmware doesn't allow fine-grained control over
5241 * the receive filter.
5242 */
5243 if (priv->ap_fw) {
5244 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5245 kfree(cmd);
5246 return;
5247 }
5248
5249 /*
5250 * Enable hardware sniffer mode if FIF_CONTROL or
5251 * FIF_OTHER_BSS is requested.
5252 */
5253 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5254 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5255 kfree(cmd);
5256 return;
5257 }
5258
5259 /* Clear unsupported feature flags */
5260 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5261
5262 if (mwl8k_fw_lock(hw)) {
5263 kfree(cmd);
5264 return;
5265 }
5266
5267 if (priv->sniffer_enabled) {
5268 mwl8k_cmd_enable_sniffer(hw, 0);
5269 priv->sniffer_enabled = false;
5270 }
5271
5272 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5273 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5274 /*
5275 * Disable the BSS filter.
5276 */
5277 mwl8k_cmd_set_pre_scan(hw);
5278 } else {
5279 struct mwl8k_vif *mwl8k_vif;
5280 const u8 *bssid;
5281
5282 /*
5283 * Enable the BSS filter.
5284 *
5285 * If there is an active STA interface, use that
5286 * interface's BSSID, otherwise use a dummy one
5287 * (where the OUI part needs to be nonzero for
5288 * the BSSID to be accepted by POST_SCAN).
5289 */
5290 mwl8k_vif = mwl8k_first_vif(priv);
5291 if (mwl8k_vif != NULL)
5292 bssid = mwl8k_vif->vif->bss_conf.bssid;
5293 else
5294 bssid = "\x01\x00\x00\x00\x00\x00";
5295
5296 mwl8k_cmd_set_post_scan(hw, bssid);
5297 }
5298 }
5299
5300 /*
5301 * If FIF_ALLMULTI is being requested, throw away the command
5302 * packet that ->prepare_multicast() built and replace it with
5303 * a command packet that enables reception of all multicast
5304 * packets.
5305 */
5306 if (*total_flags & FIF_ALLMULTI) {
5307 kfree(cmd);
5308 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5309 }
5310
5311 if (cmd != NULL) {
5312 mwl8k_post_cmd(hw, cmd);
5313 kfree(cmd);
5314 }
5315
5316 mwl8k_fw_unlock(hw);
5317}
5318
5319static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5320{
5321 return mwl8k_cmd_set_rts_threshold(hw, value);
5322}
5323
5324static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5325 struct ieee80211_vif *vif,
5326 struct ieee80211_sta *sta)
5327{
5328 struct mwl8k_priv *priv = hw->priv;
5329
5330 if (priv->ap_fw)
5331 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5332 else
5333 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5334}
5335
5336static int mwl8k_sta_add(struct ieee80211_hw *hw,
5337 struct ieee80211_vif *vif,
5338 struct ieee80211_sta *sta)
5339{
5340 struct mwl8k_priv *priv = hw->priv;
5341 int ret;
5342 int i;
5343 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5344 struct ieee80211_key_conf *key;
5345
5346 if (!priv->ap_fw) {
5347 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5348 if (ret >= 0) {
5349 MWL8K_STA(sta)->peer_id = ret;
5350 if (sta->deflink.ht_cap.ht_supported)
5351 MWL8K_STA(sta)->is_ampdu_allowed = true;
5352 ret = 0;
5353 }
5354
5355 } else {
5356 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5357 }
5358
5359 for (i = 0; i < NUM_WEP_KEYS; i++) {
5360 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5361 if (mwl8k_vif->wep_key_conf[i].enabled)
5362 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5363 }
5364 return ret;
5365}
5366
5367static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5368 struct ieee80211_vif *vif,
5369 unsigned int link_id, u16 queue,
5370 const struct ieee80211_tx_queue_params *params)
5371{
5372 struct mwl8k_priv *priv = hw->priv;
5373 int rc;
5374
5375 rc = mwl8k_fw_lock(hw);
5376 if (!rc) {
5377 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5378 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5379
5380 if (!priv->wmm_enabled)
5381 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5382
5383 if (!rc) {
5384 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5385 rc = mwl8k_cmd_set_edca_params(hw, q,
5386 params->cw_min,
5387 params->cw_max,
5388 params->aifs,
5389 params->txop);
5390 }
5391
5392 mwl8k_fw_unlock(hw);
5393 }
5394
5395 return rc;
5396}
5397
5398static int mwl8k_get_stats(struct ieee80211_hw *hw,
5399 struct ieee80211_low_level_stats *stats)
5400{
5401 return mwl8k_cmd_get_stat(hw, stats);
5402}
5403
5404static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5405 struct survey_info *survey)
5406{
5407 struct mwl8k_priv *priv = hw->priv;
5408 struct ieee80211_conf *conf = &hw->conf;
5409 struct ieee80211_supported_band *sband;
5410
5411 if (priv->ap_fw) {
5412 sband = hw->wiphy->bands[NL80211_BAND_2GHZ];
5413
5414 if (sband && idx >= sband->n_channels) {
5415 idx -= sband->n_channels;
5416 sband = NULL;
5417 }
5418
5419 if (!sband)
5420 sband = hw->wiphy->bands[NL80211_BAND_5GHZ];
5421
5422 if (!sband || idx >= sband->n_channels)
5423 return -ENOENT;
5424
5425 memcpy(survey, &priv->survey[idx], sizeof(*survey));
5426 survey->channel = &sband->channels[idx];
5427
5428 return 0;
5429 }
5430
5431 if (idx != 0)
5432 return -ENOENT;
5433
5434 survey->channel = conf->chandef.chan;
5435 survey->filled = SURVEY_INFO_NOISE_DBM;
5436 survey->noise = priv->noise;
5437
5438 return 0;
5439}
5440
5441#define MAX_AMPDU_ATTEMPTS 5
5442
5443static int
5444mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5445 struct ieee80211_ampdu_params *params)
5446{
5447 struct ieee80211_sta *sta = params->sta;
5448 enum ieee80211_ampdu_mlme_action action = params->action;
5449 u16 tid = params->tid;
5450 u16 *ssn = ¶ms->ssn;
5451 u8 buf_size = params->buf_size;
5452 int i, rc = 0;
5453 struct mwl8k_priv *priv = hw->priv;
5454 struct mwl8k_ampdu_stream *stream;
5455 u8 *addr = sta->addr, idx;
5456 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5457
5458 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
5459 return -ENOTSUPP;
5460
5461 spin_lock(&priv->stream_lock);
5462 stream = mwl8k_lookup_stream(hw, addr, tid);
5463
5464 switch (action) {
5465 case IEEE80211_AMPDU_RX_START:
5466 case IEEE80211_AMPDU_RX_STOP:
5467 break;
5468 case IEEE80211_AMPDU_TX_START:
5469 /* By the time we get here the hw queues may contain outgoing
5470 * packets for this RA/TID that are not part of this BA
5471 * session. The hw will assign sequence numbers to these
5472 * packets as they go out. So if we query the hw for its next
5473 * sequence number and use that for the SSN here, it may end up
5474 * being wrong, which will lead to sequence number mismatch at
5475 * the recipient. To avoid this, we reset the sequence number
5476 * to O for the first MPDU in this BA stream.
5477 */
5478 *ssn = 0;
5479 if (stream == NULL) {
5480 /* This means that somebody outside this driver called
5481 * ieee80211_start_tx_ba_session. This is unexpected
5482 * because we do our own rate control. Just warn and
5483 * move on.
5484 */
5485 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5486 "Proceeding anyway.\n", __func__);
5487 stream = mwl8k_add_stream(hw, sta, tid);
5488 }
5489 if (stream == NULL) {
5490 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5491 rc = -EBUSY;
5492 break;
5493 }
5494 stream->state = AMPDU_STREAM_IN_PROGRESS;
5495
5496 /* Release the lock before we do the time consuming stuff */
5497 spin_unlock(&priv->stream_lock);
5498 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5499
5500 /* Check if link is still valid */
5501 if (!sta_info->is_ampdu_allowed) {
5502 spin_lock(&priv->stream_lock);
5503 mwl8k_remove_stream(hw, stream);
5504 spin_unlock(&priv->stream_lock);
5505 return -EBUSY;
5506 }
5507
5508 rc = mwl8k_check_ba(hw, stream, vif);
5509
5510 /* If HW restart is in progress mwl8k_post_cmd will
5511 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5512 * such cases
5513 */
5514 if (!rc || rc == -EBUSY)
5515 break;
5516 /*
5517 * HW queues take time to be flushed, give them
5518 * sufficient time
5519 */
5520
5521 msleep(1000);
5522 }
5523 spin_lock(&priv->stream_lock);
5524 if (rc) {
5525 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5526 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5527 mwl8k_remove_stream(hw, stream);
5528 rc = -EBUSY;
5529 break;
5530 }
5531 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE;
5532 break;
5533 case IEEE80211_AMPDU_TX_STOP_CONT:
5534 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5535 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5536 if (stream) {
5537 if (stream->state == AMPDU_STREAM_ACTIVE) {
5538 idx = stream->idx;
5539 spin_unlock(&priv->stream_lock);
5540 mwl8k_destroy_ba(hw, idx);
5541 spin_lock(&priv->stream_lock);
5542 }
5543 mwl8k_remove_stream(hw, stream);
5544 }
5545 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5546 break;
5547 case IEEE80211_AMPDU_TX_OPERATIONAL:
5548 BUG_ON(stream == NULL);
5549 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5550 spin_unlock(&priv->stream_lock);
5551 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5552 spin_lock(&priv->stream_lock);
5553 if (!rc)
5554 stream->state = AMPDU_STREAM_ACTIVE;
5555 else {
5556 idx = stream->idx;
5557 spin_unlock(&priv->stream_lock);
5558 mwl8k_destroy_ba(hw, idx);
5559 spin_lock(&priv->stream_lock);
5560 wiphy_debug(hw->wiphy,
5561 "Failed adding stream for sta %pM tid %d\n",
5562 addr, tid);
5563 mwl8k_remove_stream(hw, stream);
5564 }
5565 break;
5566
5567 default:
5568 rc = -ENOTSUPP;
5569 }
5570
5571 spin_unlock(&priv->stream_lock);
5572 return rc;
5573}
5574
5575static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
5576 struct ieee80211_vif *vif,
5577 const u8 *mac_addr)
5578{
5579 struct mwl8k_priv *priv = hw->priv;
5580 u8 tmp;
5581
5582 if (!priv->ap_fw)
5583 return;
5584
5585 /* clear all stats */
5586 priv->channel_time = 0;
5587 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5588 ioread32(priv->regs + NOK_CCA_CNT_REG);
5589 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5590
5591 priv->sw_scan_start = true;
5592}
5593
5594static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
5595 struct ieee80211_vif *vif)
5596{
5597 struct mwl8k_priv *priv = hw->priv;
5598 u8 tmp;
5599
5600 if (!priv->ap_fw)
5601 return;
5602
5603 priv->sw_scan_start = false;
5604
5605 /* clear all stats */
5606 priv->channel_time = 0;
5607 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5608 ioread32(priv->regs + NOK_CCA_CNT_REG);
5609 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5610}
5611
5612static const struct ieee80211_ops mwl8k_ops = {
5613 .add_chanctx = ieee80211_emulate_add_chanctx,
5614 .remove_chanctx = ieee80211_emulate_remove_chanctx,
5615 .change_chanctx = ieee80211_emulate_change_chanctx,
5616 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
5617 .tx = mwl8k_tx,
5618 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
5619 .start = mwl8k_start,
5620 .stop = mwl8k_stop,
5621 .add_interface = mwl8k_add_interface,
5622 .remove_interface = mwl8k_remove_interface,
5623 .config = mwl8k_config,
5624 .bss_info_changed = mwl8k_bss_info_changed,
5625 .prepare_multicast = mwl8k_prepare_multicast,
5626 .configure_filter = mwl8k_configure_filter,
5627 .set_key = mwl8k_set_key,
5628 .set_rts_threshold = mwl8k_set_rts_threshold,
5629 .sta_add = mwl8k_sta_add,
5630 .sta_remove = mwl8k_sta_remove,
5631 .conf_tx = mwl8k_conf_tx,
5632 .get_stats = mwl8k_get_stats,
5633 .get_survey = mwl8k_get_survey,
5634 .ampdu_action = mwl8k_ampdu_action,
5635 .sw_scan_start = mwl8k_sw_scan_start,
5636 .sw_scan_complete = mwl8k_sw_scan_complete,
5637};
5638
5639static void mwl8k_finalize_join_worker(struct work_struct *work)
5640{
5641 struct mwl8k_priv *priv =
5642 container_of(work, struct mwl8k_priv, finalize_join_worker);
5643 struct sk_buff *skb = priv->beacon_skb;
5644 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5645 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5646 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5647 mgmt->u.beacon.variable, len);
5648 int dtim_period = 1;
5649
5650 if (tim && tim[1] >= 2)
5651 dtim_period = tim[3];
5652
5653 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5654
5655 dev_kfree_skb(skb);
5656 priv->beacon_skb = NULL;
5657}
5658
5659enum {
5660 MWL8363 = 0,
5661 MWL8687,
5662 MWL8366,
5663 MWL8764,
5664};
5665
5666#define MWL8K_8366_AP_FW_API 3
5667#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5668#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5669
5670#define MWL8K_8764_AP_FW_API 1
5671#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5672#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5673
5674static struct mwl8k_device_info mwl8k_info_tbl[] = {
5675 [MWL8363] = {
5676 .part_name = "88w8363",
5677 .helper_image = "mwl8k/helper_8363.fw",
5678 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5679 },
5680 [MWL8687] = {
5681 .part_name = "88w8687",
5682 .helper_image = "mwl8k/helper_8687.fw",
5683 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5684 },
5685 [MWL8366] = {
5686 .part_name = "88w8366",
5687 .helper_image = "mwl8k/helper_8366.fw",
5688 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5689 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5690 .fw_api_ap = MWL8K_8366_AP_FW_API,
5691 .ap_rxd_ops = &rxd_ap_ops,
5692 },
5693 [MWL8764] = {
5694 .part_name = "88w8764",
5695 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5696 .fw_api_ap = MWL8K_8764_AP_FW_API,
5697 .ap_rxd_ops = &rxd_ap_ops,
5698 },
5699};
5700
5701MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5702MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5703MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5704MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5705MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5706MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5707MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5708
5709static const struct pci_device_id mwl8k_pci_id_table[] = {
5710 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5711 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5712 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5713 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5714 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5715 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5716 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5717 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5718 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5719 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5720 { },
5721};
5722MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5723
5724static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5725{
5726 int rc;
5727 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5728 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5729 priv->fw_pref, priv->fw_alt);
5730 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5731 if (rc) {
5732 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5733 pci_name(priv->pdev), priv->fw_alt);
5734 return rc;
5735 }
5736 return 0;
5737}
5738
5739static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5740static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5741{
5742 struct mwl8k_priv *priv = context;
5743 struct mwl8k_device_info *di = priv->device_info;
5744 int rc;
5745
5746 switch (priv->fw_state) {
5747 case FW_STATE_INIT:
5748 if (!fw) {
5749 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5750 pci_name(priv->pdev), di->helper_image);
5751 goto fail;
5752 }
5753 priv->fw_helper = fw;
5754 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5755 true);
5756 if (rc && priv->fw_alt) {
5757 rc = mwl8k_request_alt_fw(priv);
5758 if (rc)
5759 goto fail;
5760 priv->fw_state = FW_STATE_LOADING_ALT;
5761 } else if (rc)
5762 goto fail;
5763 else
5764 priv->fw_state = FW_STATE_LOADING_PREF;
5765 break;
5766
5767 case FW_STATE_LOADING_PREF:
5768 if (!fw) {
5769 if (priv->fw_alt) {
5770 rc = mwl8k_request_alt_fw(priv);
5771 if (rc)
5772 goto fail;
5773 priv->fw_state = FW_STATE_LOADING_ALT;
5774 } else
5775 goto fail;
5776 } else {
5777 priv->fw_ucode = fw;
5778 rc = mwl8k_firmware_load_success(priv);
5779 if (rc)
5780 goto fail;
5781 else
5782 complete(&priv->firmware_loading_complete);
5783 }
5784 break;
5785
5786 case FW_STATE_LOADING_ALT:
5787 if (!fw) {
5788 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5789 pci_name(priv->pdev), di->helper_image);
5790 goto fail;
5791 }
5792 priv->fw_ucode = fw;
5793 rc = mwl8k_firmware_load_success(priv);
5794 if (rc)
5795 goto fail;
5796 else
5797 complete(&priv->firmware_loading_complete);
5798 break;
5799
5800 default:
5801 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5802 MWL8K_NAME, priv->fw_state);
5803 BUG_ON(1);
5804 }
5805
5806 return;
5807
5808fail:
5809 priv->fw_state = FW_STATE_ERROR;
5810 complete(&priv->firmware_loading_complete);
5811 mwl8k_release_firmware(priv);
5812 device_release_driver(&priv->pdev->dev);
5813}
5814
5815#define MAX_RESTART_ATTEMPTS 1
5816static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5817 bool nowait)
5818{
5819 struct mwl8k_priv *priv = hw->priv;
5820 int rc;
5821 int count = MAX_RESTART_ATTEMPTS;
5822
5823retry:
5824 /* Reset firmware and hardware */
5825 mwl8k_hw_reset(priv);
5826
5827 /* Ask userland hotplug daemon for the device firmware */
5828 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5829 if (rc) {
5830 wiphy_err(hw->wiphy, "Firmware files not found\n");
5831 return rc;
5832 }
5833
5834 if (nowait)
5835 return rc;
5836
5837 /* Load firmware into hardware */
5838 rc = mwl8k_load_firmware(hw);
5839 if (rc)
5840 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5841
5842 /* Reclaim memory once firmware is successfully loaded */
5843 mwl8k_release_firmware(priv);
5844
5845 if (rc && count) {
5846 /* FW did not start successfully;
5847 * lets try one more time
5848 */
5849 count--;
5850 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5851 msleep(20);
5852 goto retry;
5853 }
5854
5855 return rc;
5856}
5857
5858static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5859{
5860 struct mwl8k_priv *priv = hw->priv;
5861 int rc = 0;
5862 int i;
5863
5864 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5865 rc = mwl8k_txq_init(hw, i);
5866 if (rc)
5867 break;
5868 if (priv->ap_fw)
5869 iowrite32(priv->txq[i].txd_dma,
5870 priv->sram + priv->txq_offset[i]);
5871 }
5872 return rc;
5873}
5874
5875/* initialize hw after successfully loading a firmware image */
5876static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5877{
5878 struct mwl8k_priv *priv = hw->priv;
5879 int rc = 0;
5880 int i;
5881
5882 if (priv->ap_fw) {
5883 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5884 if (priv->rxd_ops == NULL) {
5885 wiphy_err(hw->wiphy,
5886 "Driver does not have AP firmware image support for this hardware\n");
5887 rc = -ENOENT;
5888 goto err_stop_firmware;
5889 }
5890 } else {
5891 priv->rxd_ops = &rxd_sta_ops;
5892 }
5893
5894 priv->sniffer_enabled = false;
5895 priv->wmm_enabled = false;
5896 priv->pending_tx_pkts = 0;
5897 atomic_set(&priv->watchdog_event_pending, 0);
5898
5899 rc = mwl8k_rxq_init(hw, 0);
5900 if (rc)
5901 goto err_stop_firmware;
5902 rxq_refill(hw, 0, INT_MAX);
5903
5904 /* For the sta firmware, we need to know the dma addresses of tx queues
5905 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5906 * prior to issuing this command. But for the AP case, we learn the
5907 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5908 * case we must initialize the tx queues after.
5909 */
5910 priv->num_ampdu_queues = 0;
5911 if (!priv->ap_fw) {
5912 rc = mwl8k_init_txqs(hw);
5913 if (rc)
5914 goto err_free_queues;
5915 }
5916
5917 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5918 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5919 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5920 MWL8K_A2H_INT_BA_WATCHDOG,
5921 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5922 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5923 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5924
5925 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5926 IRQF_SHARED, MWL8K_NAME, hw);
5927 if (rc) {
5928 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5929 goto err_free_queues;
5930 }
5931
5932 /*
5933 * When hw restart is requested,
5934 * mac80211 will take care of clearing
5935 * the ampdu streams, so do not clear
5936 * the ampdu state here
5937 */
5938 if (!priv->hw_restart_in_progress)
5939 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5940
5941 /*
5942 * Temporarily enable interrupts. Initial firmware host
5943 * commands use interrupts and avoid polling. Disable
5944 * interrupts when done.
5945 */
5946 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5947
5948 /* Get config data, mac addrs etc */
5949 if (priv->ap_fw) {
5950 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5951 if (!rc)
5952 rc = mwl8k_init_txqs(hw);
5953 if (!rc)
5954 rc = mwl8k_cmd_set_hw_spec(hw);
5955 } else {
5956 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5957 }
5958 if (rc) {
5959 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5960 goto err_free_irq;
5961 }
5962
5963 /* Turn radio off */
5964 rc = mwl8k_cmd_radio_disable(hw);
5965 if (rc) {
5966 wiphy_err(hw->wiphy, "Cannot disable\n");
5967 goto err_free_irq;
5968 }
5969
5970 /* Clear MAC address */
5971 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5972 if (rc) {
5973 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5974 goto err_free_irq;
5975 }
5976
5977 /* Configure Antennas */
5978 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5979 if (rc)
5980 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5981 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5982 if (rc)
5983 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5984
5985
5986 /* Disable interrupts */
5987 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5988 free_irq(priv->pdev->irq, hw);
5989
5990 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5991 priv->device_info->part_name,
5992 priv->hw_rev, hw->wiphy->perm_addr,
5993 priv->ap_fw ? "AP" : "STA",
5994 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5995 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5996
5997 return 0;
5998
5999err_free_irq:
6000 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
6001 free_irq(priv->pdev->irq, hw);
6002
6003err_free_queues:
6004 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6005 mwl8k_txq_deinit(hw, i);
6006 mwl8k_rxq_deinit(hw, 0);
6007
6008err_stop_firmware:
6009 mwl8k_hw_reset(priv);
6010
6011 return rc;
6012}
6013
6014/*
6015 * invoke mwl8k_reload_firmware to change the firmware image after the device
6016 * has already been registered
6017 */
6018static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
6019{
6020 int i, rc = 0;
6021 struct mwl8k_priv *priv = hw->priv;
6022 struct mwl8k_vif *vif, *tmp_vif;
6023
6024 mwl8k_stop(hw);
6025 mwl8k_rxq_deinit(hw, 0);
6026
6027 /*
6028 * All the existing interfaces are re-added by the ieee80211_reconfig;
6029 * which means driver should remove existing interfaces before calling
6030 * ieee80211_restart_hw
6031 */
6032 if (priv->hw_restart_in_progress)
6033 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6034 mwl8k_remove_vif(priv, vif);
6035
6036 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6037 mwl8k_txq_deinit(hw, i);
6038
6039 rc = mwl8k_init_firmware(hw, fw_image, false);
6040 if (rc)
6041 goto fail;
6042
6043 rc = mwl8k_probe_hw(hw);
6044 if (rc)
6045 goto fail;
6046
6047 if (priv->hw_restart_in_progress)
6048 return rc;
6049
6050 rc = mwl8k_start(hw);
6051 if (rc)
6052 goto fail;
6053
6054 rc = mwl8k_config(hw, ~0);
6055 if (rc)
6056 goto fail;
6057
6058 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6059 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]);
6060 if (rc)
6061 goto fail;
6062 }
6063
6064 return rc;
6065
6066fail:
6067 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6068 return rc;
6069}
6070
6071static const struct ieee80211_iface_limit ap_if_limits[] = {
6072 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
6073 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
6074};
6075
6076static const struct ieee80211_iface_combination ap_if_comb = {
6077 .limits = ap_if_limits,
6078 .n_limits = ARRAY_SIZE(ap_if_limits),
6079 .max_interfaces = 8,
6080 .num_different_channels = 1,
6081};
6082
6083
6084static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6085{
6086 struct ieee80211_hw *hw = priv->hw;
6087 int i, rc;
6088
6089 rc = mwl8k_load_firmware(hw);
6090 mwl8k_release_firmware(priv);
6091 if (rc) {
6092 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6093 return rc;
6094 }
6095
6096 /*
6097 * Extra headroom is the size of the required DMA header
6098 * minus the size of the smallest 802.11 frame (CTS frame).
6099 */
6100 hw->extra_tx_headroom =
6101 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6102
6103 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6104
6105 hw->queues = MWL8K_TX_WMM_QUEUES;
6106
6107 /* Set rssi values to dBm */
6108 ieee80211_hw_set(hw, SIGNAL_DBM);
6109 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
6110
6111 /*
6112 * Ask mac80211 to not to trigger PS mode
6113 * based on PM bit of incoming frames.
6114 */
6115 if (priv->ap_fw)
6116 ieee80211_hw_set(hw, AP_LINK_PS);
6117
6118 hw->vif_data_size = sizeof(struct mwl8k_vif);
6119 hw->sta_data_size = sizeof(struct mwl8k_sta);
6120
6121 priv->macids_used = 0;
6122 INIT_LIST_HEAD(&priv->vif_list);
6123
6124 /* Set default radio state and preamble */
6125 priv->radio_on = false;
6126 priv->radio_short_preamble = false;
6127
6128 /* Finalize join worker */
6129 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6130 /* Handle watchdog ba events */
6131 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6132 /* To reload the firmware if it crashes */
6133 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6134
6135 /* TX reclaim and RX tasklets. */
6136 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll);
6137 tasklet_disable(&priv->poll_tx_task);
6138 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll);
6139 tasklet_disable(&priv->poll_rx_task);
6140
6141 /* Power management cookie */
6142 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4,
6143 &priv->cookie_dma, GFP_KERNEL);
6144 if (priv->cookie == NULL)
6145 return -ENOMEM;
6146
6147 mutex_init(&priv->fw_mutex);
6148 priv->fw_mutex_owner = NULL;
6149 priv->fw_mutex_depth = 0;
6150 priv->hostcmd_wait = NULL;
6151
6152 spin_lock_init(&priv->tx_lock);
6153
6154 spin_lock_init(&priv->stream_lock);
6155
6156 priv->tx_wait = NULL;
6157
6158 rc = mwl8k_probe_hw(hw);
6159 if (rc)
6160 goto err_free_cookie;
6161
6162 hw->wiphy->interface_modes = 0;
6163
6164 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6165 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6166 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6167 hw->wiphy->iface_combinations = &ap_if_comb;
6168 hw->wiphy->n_iface_combinations = 1;
6169 }
6170
6171 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6172 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6173
6174 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
6175
6176 rc = ieee80211_register_hw(hw);
6177 if (rc) {
6178 wiphy_err(hw->wiphy, "Cannot register device\n");
6179 goto err_unprobe_hw;
6180 }
6181
6182 return 0;
6183
6184err_unprobe_hw:
6185 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6186 mwl8k_txq_deinit(hw, i);
6187 mwl8k_rxq_deinit(hw, 0);
6188
6189err_free_cookie:
6190 if (priv->cookie != NULL)
6191 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie,
6192 priv->cookie_dma);
6193
6194 return rc;
6195}
6196static int mwl8k_probe(struct pci_dev *pdev,
6197 const struct pci_device_id *id)
6198{
6199 static int printed_version;
6200 struct ieee80211_hw *hw;
6201 struct mwl8k_priv *priv;
6202 struct mwl8k_device_info *di;
6203 int rc;
6204
6205 if (!printed_version) {
6206 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6207 printed_version = 1;
6208 }
6209
6210
6211 rc = pci_enable_device(pdev);
6212 if (rc) {
6213 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6214 MWL8K_NAME);
6215 return rc;
6216 }
6217
6218 rc = pci_request_regions(pdev, MWL8K_NAME);
6219 if (rc) {
6220 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6221 MWL8K_NAME);
6222 goto err_disable_device;
6223 }
6224
6225 pci_set_master(pdev);
6226
6227
6228 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6229 if (hw == NULL) {
6230 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6231 rc = -ENOMEM;
6232 goto err_free_reg;
6233 }
6234
6235 SET_IEEE80211_DEV(hw, &pdev->dev);
6236 pci_set_drvdata(pdev, hw);
6237
6238 priv = hw->priv;
6239 priv->hw = hw;
6240 priv->pdev = pdev;
6241 priv->device_info = &mwl8k_info_tbl[id->driver_data];
6242
6243 if (id->driver_data == MWL8764)
6244 priv->is_8764 = true;
6245
6246 priv->sram = pci_iomap(pdev, 0, 0x10000);
6247 if (priv->sram == NULL) {
6248 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6249 rc = -EIO;
6250 goto err_iounmap;
6251 }
6252
6253 /*
6254 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6255 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6256 */
6257 priv->regs = pci_iomap(pdev, 1, 0x10000);
6258 if (priv->regs == NULL) {
6259 priv->regs = pci_iomap(pdev, 2, 0x10000);
6260 if (priv->regs == NULL) {
6261 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6262 rc = -EIO;
6263 goto err_iounmap;
6264 }
6265 }
6266
6267 /*
6268 * Choose the initial fw image depending on user input. If a second
6269 * image is available, make it the alternative image that will be
6270 * loaded if the first one fails.
6271 */
6272 init_completion(&priv->firmware_loading_complete);
6273 di = priv->device_info;
6274 if (ap_mode_default && di->fw_image_ap) {
6275 priv->fw_pref = di->fw_image_ap;
6276 priv->fw_alt = di->fw_image_sta;
6277 } else if (!ap_mode_default && di->fw_image_sta) {
6278 priv->fw_pref = di->fw_image_sta;
6279 priv->fw_alt = di->fw_image_ap;
6280 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6281 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6282 priv->fw_pref = di->fw_image_sta;
6283 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6284 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6285 priv->fw_pref = di->fw_image_ap;
6286 }
6287 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6288 if (rc)
6289 goto err_stop_firmware;
6290
6291 priv->hw_restart_in_progress = false;
6292
6293 priv->running_bsses = 0;
6294
6295 return rc;
6296
6297err_stop_firmware:
6298 mwl8k_hw_reset(priv);
6299
6300err_iounmap:
6301 if (priv->regs != NULL)
6302 pci_iounmap(pdev, priv->regs);
6303
6304 if (priv->sram != NULL)
6305 pci_iounmap(pdev, priv->sram);
6306
6307 ieee80211_free_hw(hw);
6308
6309err_free_reg:
6310 pci_release_regions(pdev);
6311
6312err_disable_device:
6313 pci_disable_device(pdev);
6314
6315 return rc;
6316}
6317
6318static void mwl8k_remove(struct pci_dev *pdev)
6319{
6320 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6321 struct mwl8k_priv *priv;
6322 int i;
6323
6324 if (hw == NULL)
6325 return;
6326 priv = hw->priv;
6327
6328 wait_for_completion(&priv->firmware_loading_complete);
6329
6330 if (priv->fw_state == FW_STATE_ERROR) {
6331 mwl8k_hw_reset(priv);
6332 goto unmap;
6333 }
6334
6335 ieee80211_stop_queues(hw);
6336
6337 ieee80211_unregister_hw(hw);
6338
6339 /* Remove TX reclaim and RX tasklets. */
6340 tasklet_kill(&priv->poll_tx_task);
6341 tasklet_kill(&priv->poll_rx_task);
6342
6343 /* Stop hardware */
6344 mwl8k_hw_reset(priv);
6345
6346 /* Return all skbs to mac80211 */
6347 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6348 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6349
6350 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6351 mwl8k_txq_deinit(hw, i);
6352
6353 mwl8k_rxq_deinit(hw, 0);
6354
6355 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma);
6356
6357unmap:
6358 pci_iounmap(pdev, priv->regs);
6359 pci_iounmap(pdev, priv->sram);
6360 ieee80211_free_hw(hw);
6361 pci_release_regions(pdev);
6362 pci_disable_device(pdev);
6363}
6364
6365static struct pci_driver mwl8k_driver = {
6366 .name = MWL8K_NAME,
6367 .id_table = mwl8k_pci_id_table,
6368 .probe = mwl8k_probe,
6369 .remove = mwl8k_remove,
6370};
6371
6372module_pci_driver(mwl8k_driver);
6373
6374MODULE_DESCRIPTION(MWL8K_DESC);
6375MODULE_VERSION(MWL8K_VERSION);
6376MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6377MODULE_LICENSE("GPL");
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/interrupt.h>
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/sched.h>
16#include <linux/spinlock.h>
17#include <linux/list.h>
18#include <linux/pci.h>
19#include <linux/delay.h>
20#include <linux/completion.h>
21#include <linux/etherdevice.h>
22#include <linux/slab.h>
23#include <net/mac80211.h>
24#include <linux/moduleparam.h>
25#include <linux/firmware.h>
26#include <linux/workqueue.h>
27
28#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29#define MWL8K_NAME KBUILD_MODNAME
30#define MWL8K_VERSION "0.13"
31
32/* Module parameters */
33static bool ap_mode_default;
34module_param(ap_mode_default, bool, 0);
35MODULE_PARM_DESC(ap_mode_default,
36 "Set to 1 to make ap mode the default instead of sta mode");
37
38/* Register definitions */
39#define MWL8K_HIU_GEN_PTR 0x00000c10
40#define MWL8K_MODE_STA 0x0000005a
41#define MWL8K_MODE_AP 0x000000a5
42#define MWL8K_HIU_INT_CODE 0x00000c14
43#define MWL8K_FWSTA_READY 0xf0f1f2f4
44#define MWL8K_FWAP_READY 0xf1f2f4a5
45#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
46#define MWL8K_HIU_SCRATCH 0x00000c40
47
48/* Host->device communications */
49#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
50#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
51#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
52#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
53#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
54#define MWL8K_H2A_INT_DUMMY (1 << 20)
55#define MWL8K_H2A_INT_RESET (1 << 15)
56#define MWL8K_H2A_INT_DOORBELL (1 << 1)
57#define MWL8K_H2A_INT_PPA_READY (1 << 0)
58
59/* Device->host communications */
60#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
61#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
62#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
63#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
64#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
65#define MWL8K_A2H_INT_DUMMY (1 << 20)
66#define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
67#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
68#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
69#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
70#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
71#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
72#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
73#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
74#define MWL8K_A2H_INT_RX_READY (1 << 1)
75#define MWL8K_A2H_INT_TX_DONE (1 << 0)
76
77/* HW micro second timer register
78 * located at offset 0xA600. This
79 * will be used to timestamp tx
80 * packets.
81 */
82
83#define MWL8K_HW_TIMER_REGISTER 0x0000a600
84#define BBU_RXRDY_CNT_REG 0x0000a860
85#define NOK_CCA_CNT_REG 0x0000a6a0
86#define BBU_AVG_NOISE_VAL 0x67
87
88#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
89 MWL8K_A2H_INT_CHNL_SWITCHED | \
90 MWL8K_A2H_INT_QUEUE_EMPTY | \
91 MWL8K_A2H_INT_RADAR_DETECT | \
92 MWL8K_A2H_INT_RADIO_ON | \
93 MWL8K_A2H_INT_RADIO_OFF | \
94 MWL8K_A2H_INT_MAC_EVENT | \
95 MWL8K_A2H_INT_OPC_DONE | \
96 MWL8K_A2H_INT_RX_READY | \
97 MWL8K_A2H_INT_TX_DONE | \
98 MWL8K_A2H_INT_BA_WATCHDOG)
99
100#define MWL8K_RX_QUEUES 1
101#define MWL8K_TX_WMM_QUEUES 4
102#define MWL8K_MAX_AMPDU_QUEUES 8
103#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
104#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
105
106/* txpriorities are mapped with hw queues.
107 * Each hw queue has a txpriority.
108 */
109#define TOTAL_HW_TX_QUEUES 8
110
111/* Each HW queue can have one AMPDU stream.
112 * But, because one of the hw queue is reserved,
113 * maximum AMPDU queues that can be created are
114 * one short of total tx queues.
115 */
116#define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
117
118#define MWL8K_NUM_CHANS 18
119
120struct rxd_ops {
121 int rxd_size;
122 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
123 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
124 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
125 __le16 *qos, s8 *noise);
126};
127
128struct mwl8k_device_info {
129 char *part_name;
130 char *helper_image;
131 char *fw_image_sta;
132 char *fw_image_ap;
133 struct rxd_ops *ap_rxd_ops;
134 u32 fw_api_ap;
135};
136
137struct mwl8k_rx_queue {
138 int rxd_count;
139
140 /* hw receives here */
141 int head;
142
143 /* refill descs here */
144 int tail;
145
146 void *rxd;
147 dma_addr_t rxd_dma;
148 struct {
149 struct sk_buff *skb;
150 DEFINE_DMA_UNMAP_ADDR(dma);
151 } *buf;
152};
153
154struct mwl8k_tx_queue {
155 /* hw transmits here */
156 int head;
157
158 /* sw appends here */
159 int tail;
160
161 unsigned int len;
162 struct mwl8k_tx_desc *txd;
163 dma_addr_t txd_dma;
164 struct sk_buff **skb;
165};
166
167enum {
168 AMPDU_NO_STREAM,
169 AMPDU_STREAM_NEW,
170 AMPDU_STREAM_IN_PROGRESS,
171 AMPDU_STREAM_ACTIVE,
172};
173
174struct mwl8k_ampdu_stream {
175 struct ieee80211_sta *sta;
176 u8 tid;
177 u8 state;
178 u8 idx;
179};
180
181struct mwl8k_priv {
182 struct ieee80211_hw *hw;
183 struct pci_dev *pdev;
184 int irq;
185
186 struct mwl8k_device_info *device_info;
187
188 void __iomem *sram;
189 void __iomem *regs;
190
191 /* firmware */
192 const struct firmware *fw_helper;
193 const struct firmware *fw_ucode;
194
195 /* hardware/firmware parameters */
196 bool ap_fw;
197 struct rxd_ops *rxd_ops;
198 struct ieee80211_supported_band band_24;
199 struct ieee80211_channel channels_24[14];
200 struct ieee80211_rate rates_24[13];
201 struct ieee80211_supported_band band_50;
202 struct ieee80211_channel channels_50[9];
203 struct ieee80211_rate rates_50[8];
204 u32 ap_macids_supported;
205 u32 sta_macids_supported;
206
207 /* Ampdu stream information */
208 u8 num_ampdu_queues;
209 spinlock_t stream_lock;
210 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
211 struct work_struct watchdog_ba_handle;
212
213 /* firmware access */
214 struct mutex fw_mutex;
215 struct task_struct *fw_mutex_owner;
216 struct task_struct *hw_restart_owner;
217 int fw_mutex_depth;
218 struct completion *hostcmd_wait;
219
220 atomic_t watchdog_event_pending;
221
222 /* lock held over TX and TX reap */
223 spinlock_t tx_lock;
224
225 /* TX quiesce completion, protected by fw_mutex and tx_lock */
226 struct completion *tx_wait;
227
228 /* List of interfaces. */
229 u32 macids_used;
230 struct list_head vif_list;
231
232 /* power management status cookie from firmware */
233 u32 *cookie;
234 dma_addr_t cookie_dma;
235
236 u16 num_mcaddrs;
237 u8 hw_rev;
238 u32 fw_rev;
239 u32 caps;
240
241 /*
242 * Running count of TX packets in flight, to avoid
243 * iterating over the transmit rings each time.
244 */
245 int pending_tx_pkts;
246
247 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
248 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
249 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
250
251 bool radio_on;
252 bool radio_short_preamble;
253 bool sniffer_enabled;
254 bool wmm_enabled;
255
256 /* XXX need to convert this to handle multiple interfaces */
257 bool capture_beacon;
258 u8 capture_bssid[ETH_ALEN];
259 struct sk_buff *beacon_skb;
260
261 /*
262 * This FJ worker has to be global as it is scheduled from the
263 * RX handler. At this point we don't know which interface it
264 * belongs to until the list of bssids waiting to complete join
265 * is checked.
266 */
267 struct work_struct finalize_join_worker;
268
269 /* Tasklet to perform TX reclaim. */
270 struct tasklet_struct poll_tx_task;
271
272 /* Tasklet to perform RX. */
273 struct tasklet_struct poll_rx_task;
274
275 /* Most recently reported noise in dBm */
276 s8 noise;
277
278 /*
279 * preserve the queue configurations so they can be restored if/when
280 * the firmware image is swapped.
281 */
282 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
283
284 /* To perform the task of reloading the firmware */
285 struct work_struct fw_reload;
286 bool hw_restart_in_progress;
287
288 /* async firmware loading state */
289 unsigned fw_state;
290 char *fw_pref;
291 char *fw_alt;
292 bool is_8764;
293 struct completion firmware_loading_complete;
294
295 /* bitmap of running BSSes */
296 u32 running_bsses;
297
298 /* ACS related */
299 bool sw_scan_start;
300 struct ieee80211_channel *acs_chan;
301 unsigned long channel_time;
302 struct survey_info survey[MWL8K_NUM_CHANS];
303};
304
305#define MAX_WEP_KEY_LEN 13
306#define NUM_WEP_KEYS 4
307
308/* Per interface specific private data */
309struct mwl8k_vif {
310 struct list_head list;
311 struct ieee80211_vif *vif;
312
313 /* Firmware macid for this vif. */
314 int macid;
315
316 /* Non AMPDU sequence number assigned by driver. */
317 u16 seqno;
318
319 /* Saved WEP keys */
320 struct {
321 u8 enabled;
322 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
323 } wep_key_conf[NUM_WEP_KEYS];
324
325 /* BSSID */
326 u8 bssid[ETH_ALEN];
327
328 /* A flag to indicate is HW crypto is enabled for this bssid */
329 bool is_hw_crypto_enabled;
330};
331#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
332#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
333
334struct tx_traffic_info {
335 u32 start_time;
336 u32 pkts;
337};
338
339#define MWL8K_MAX_TID 8
340struct mwl8k_sta {
341 /* Index into station database. Returned by UPDATE_STADB. */
342 u8 peer_id;
343 u8 is_ampdu_allowed;
344 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
345};
346#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
347
348static const struct ieee80211_channel mwl8k_channels_24[] = {
349 { .band = NL80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
350 { .band = NL80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
351 { .band = NL80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
352 { .band = NL80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
353 { .band = NL80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
354 { .band = NL80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
355 { .band = NL80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
356 { .band = NL80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
357 { .band = NL80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
358 { .band = NL80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
359 { .band = NL80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
360 { .band = NL80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
361 { .band = NL80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
362 { .band = NL80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
363};
364
365static const struct ieee80211_rate mwl8k_rates_24[] = {
366 { .bitrate = 10, .hw_value = 2, },
367 { .bitrate = 20, .hw_value = 4, },
368 { .bitrate = 55, .hw_value = 11, },
369 { .bitrate = 110, .hw_value = 22, },
370 { .bitrate = 220, .hw_value = 44, },
371 { .bitrate = 60, .hw_value = 12, },
372 { .bitrate = 90, .hw_value = 18, },
373 { .bitrate = 120, .hw_value = 24, },
374 { .bitrate = 180, .hw_value = 36, },
375 { .bitrate = 240, .hw_value = 48, },
376 { .bitrate = 360, .hw_value = 72, },
377 { .bitrate = 480, .hw_value = 96, },
378 { .bitrate = 540, .hw_value = 108, },
379};
380
381static const struct ieee80211_channel mwl8k_channels_50[] = {
382 { .band = NL80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
383 { .band = NL80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
384 { .band = NL80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
385 { .band = NL80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
386 { .band = NL80211_BAND_5GHZ, .center_freq = 5745, .hw_value = 149, },
387 { .band = NL80211_BAND_5GHZ, .center_freq = 5765, .hw_value = 153, },
388 { .band = NL80211_BAND_5GHZ, .center_freq = 5785, .hw_value = 157, },
389 { .band = NL80211_BAND_5GHZ, .center_freq = 5805, .hw_value = 161, },
390 { .band = NL80211_BAND_5GHZ, .center_freq = 5825, .hw_value = 165, },
391};
392
393static const struct ieee80211_rate mwl8k_rates_50[] = {
394 { .bitrate = 60, .hw_value = 12, },
395 { .bitrate = 90, .hw_value = 18, },
396 { .bitrate = 120, .hw_value = 24, },
397 { .bitrate = 180, .hw_value = 36, },
398 { .bitrate = 240, .hw_value = 48, },
399 { .bitrate = 360, .hw_value = 72, },
400 { .bitrate = 480, .hw_value = 96, },
401 { .bitrate = 540, .hw_value = 108, },
402};
403
404/* Set or get info from Firmware */
405#define MWL8K_CMD_GET 0x0000
406#define MWL8K_CMD_SET 0x0001
407#define MWL8K_CMD_SET_LIST 0x0002
408
409/* Firmware command codes */
410#define MWL8K_CMD_CODE_DNLD 0x0001
411#define MWL8K_CMD_GET_HW_SPEC 0x0003
412#define MWL8K_CMD_SET_HW_SPEC 0x0004
413#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
414#define MWL8K_CMD_GET_STAT 0x0014
415#define MWL8K_CMD_BBP_REG_ACCESS 0x001a
416#define MWL8K_CMD_RADIO_CONTROL 0x001c
417#define MWL8K_CMD_RF_TX_POWER 0x001e
418#define MWL8K_CMD_TX_POWER 0x001f
419#define MWL8K_CMD_RF_ANTENNA 0x0020
420#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
421#define MWL8K_CMD_SET_PRE_SCAN 0x0107
422#define MWL8K_CMD_SET_POST_SCAN 0x0108
423#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
424#define MWL8K_CMD_SET_AID 0x010d
425#define MWL8K_CMD_SET_RATE 0x0110
426#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
427#define MWL8K_CMD_RTS_THRESHOLD 0x0113
428#define MWL8K_CMD_SET_SLOT 0x0114
429#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
430#define MWL8K_CMD_SET_WMM_MODE 0x0123
431#define MWL8K_CMD_MIMO_CONFIG 0x0125
432#define MWL8K_CMD_USE_FIXED_RATE 0x0126
433#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
434#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
435#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
436#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
437#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
438#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
439#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
440#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
441#define MWL8K_CMD_UPDATE_STADB 0x1123
442#define MWL8K_CMD_BASTREAM 0x1125
443
444#define MWL8K_LEGACY_5G_RATE_OFFSET \
445 (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50))
446
447static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
448{
449 u16 command = le16_to_cpu(cmd);
450
451#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
452 snprintf(buf, bufsize, "%s", #x);\
453 return buf;\
454 } while (0)
455 switch (command & ~0x8000) {
456 MWL8K_CMDNAME(CODE_DNLD);
457 MWL8K_CMDNAME(GET_HW_SPEC);
458 MWL8K_CMDNAME(SET_HW_SPEC);
459 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
460 MWL8K_CMDNAME(GET_STAT);
461 MWL8K_CMDNAME(RADIO_CONTROL);
462 MWL8K_CMDNAME(RF_TX_POWER);
463 MWL8K_CMDNAME(TX_POWER);
464 MWL8K_CMDNAME(RF_ANTENNA);
465 MWL8K_CMDNAME(SET_BEACON);
466 MWL8K_CMDNAME(SET_PRE_SCAN);
467 MWL8K_CMDNAME(SET_POST_SCAN);
468 MWL8K_CMDNAME(SET_RF_CHANNEL);
469 MWL8K_CMDNAME(SET_AID);
470 MWL8K_CMDNAME(SET_RATE);
471 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
472 MWL8K_CMDNAME(RTS_THRESHOLD);
473 MWL8K_CMDNAME(SET_SLOT);
474 MWL8K_CMDNAME(SET_EDCA_PARAMS);
475 MWL8K_CMDNAME(SET_WMM_MODE);
476 MWL8K_CMDNAME(MIMO_CONFIG);
477 MWL8K_CMDNAME(USE_FIXED_RATE);
478 MWL8K_CMDNAME(ENABLE_SNIFFER);
479 MWL8K_CMDNAME(SET_MAC_ADDR);
480 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
481 MWL8K_CMDNAME(BSS_START);
482 MWL8K_CMDNAME(SET_NEW_STN);
483 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
484 MWL8K_CMDNAME(UPDATE_STADB);
485 MWL8K_CMDNAME(BASTREAM);
486 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
487 default:
488 snprintf(buf, bufsize, "0x%x", cmd);
489 }
490#undef MWL8K_CMDNAME
491
492 return buf;
493}
494
495/* Hardware and firmware reset */
496static void mwl8k_hw_reset(struct mwl8k_priv *priv)
497{
498 iowrite32(MWL8K_H2A_INT_RESET,
499 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
500 iowrite32(MWL8K_H2A_INT_RESET,
501 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
502 msleep(20);
503}
504
505/* Release fw image */
506static void mwl8k_release_fw(const struct firmware **fw)
507{
508 if (*fw == NULL)
509 return;
510 release_firmware(*fw);
511 *fw = NULL;
512}
513
514static void mwl8k_release_firmware(struct mwl8k_priv *priv)
515{
516 mwl8k_release_fw(&priv->fw_ucode);
517 mwl8k_release_fw(&priv->fw_helper);
518}
519
520/* states for asynchronous f/w loading */
521static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
522enum {
523 FW_STATE_INIT = 0,
524 FW_STATE_LOADING_PREF,
525 FW_STATE_LOADING_ALT,
526 FW_STATE_ERROR,
527};
528
529/* Request fw image */
530static int mwl8k_request_fw(struct mwl8k_priv *priv,
531 const char *fname, const struct firmware **fw,
532 bool nowait)
533{
534 /* release current image */
535 if (*fw != NULL)
536 mwl8k_release_fw(fw);
537
538 if (nowait)
539 return request_firmware_nowait(THIS_MODULE, 1, fname,
540 &priv->pdev->dev, GFP_KERNEL,
541 priv, mwl8k_fw_state_machine);
542 else
543 return request_firmware(fw, fname, &priv->pdev->dev);
544}
545
546static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
547 bool nowait)
548{
549 struct mwl8k_device_info *di = priv->device_info;
550 int rc;
551
552 if (di->helper_image != NULL) {
553 if (nowait)
554 rc = mwl8k_request_fw(priv, di->helper_image,
555 &priv->fw_helper, true);
556 else
557 rc = mwl8k_request_fw(priv, di->helper_image,
558 &priv->fw_helper, false);
559 if (rc)
560 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
561 pci_name(priv->pdev), di->helper_image);
562
563 if (rc || nowait)
564 return rc;
565 }
566
567 if (nowait) {
568 /*
569 * if we get here, no helper image is needed. Skip the
570 * FW_STATE_INIT state.
571 */
572 priv->fw_state = FW_STATE_LOADING_PREF;
573 rc = mwl8k_request_fw(priv, fw_image,
574 &priv->fw_ucode,
575 true);
576 } else
577 rc = mwl8k_request_fw(priv, fw_image,
578 &priv->fw_ucode, false);
579 if (rc) {
580 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
581 pci_name(priv->pdev), fw_image);
582 mwl8k_release_fw(&priv->fw_helper);
583 return rc;
584 }
585
586 return 0;
587}
588
589struct mwl8k_cmd_pkt {
590 /* New members MUST be added within the __struct_group() macro below. */
591 __struct_group(mwl8k_cmd_pkt_hdr, hdr, __packed,
592 __le16 code;
593 __le16 length;
594 __u8 seq_num;
595 __u8 macid;
596 __le16 result;
597 );
598 char payload[];
599} __packed;
600static_assert(offsetof(struct mwl8k_cmd_pkt, payload) == sizeof(struct mwl8k_cmd_pkt_hdr),
601 "struct member likely outside of __struct_group()");
602
603/*
604 * Firmware loading.
605 */
606static int
607mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
608{
609 void __iomem *regs = priv->regs;
610 dma_addr_t dma_addr;
611 int loops;
612
613 dma_addr = dma_map_single(&priv->pdev->dev, data, length,
614 DMA_TO_DEVICE);
615 if (dma_mapping_error(&priv->pdev->dev, dma_addr))
616 return -ENOMEM;
617
618 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
619 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
620 iowrite32(MWL8K_H2A_INT_DOORBELL,
621 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
622 iowrite32(MWL8K_H2A_INT_DUMMY,
623 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
624
625 loops = 1000;
626 do {
627 u32 int_code;
628 if (priv->is_8764) {
629 int_code = ioread32(regs +
630 MWL8K_HIU_H2A_INTERRUPT_STATUS);
631 if (int_code == 0)
632 break;
633 } else {
634 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
635 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
636 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
637 break;
638 }
639 }
640 cond_resched();
641 udelay(1);
642 } while (--loops);
643
644 dma_unmap_single(&priv->pdev->dev, dma_addr, length, DMA_TO_DEVICE);
645
646 return loops ? 0 : -ETIMEDOUT;
647}
648
649static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
650 const u8 *data, size_t length)
651{
652 struct mwl8k_cmd_pkt *cmd;
653 int done;
654 int rc = 0;
655
656 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
657 if (cmd == NULL)
658 return -ENOMEM;
659
660 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
661 cmd->seq_num = 0;
662 cmd->macid = 0;
663 cmd->result = 0;
664
665 done = 0;
666 while (length) {
667 int block_size = length > 256 ? 256 : length;
668
669 memcpy(cmd->payload, data + done, block_size);
670 cmd->length = cpu_to_le16(block_size);
671
672 rc = mwl8k_send_fw_load_cmd(priv, cmd,
673 sizeof(*cmd) + block_size);
674 if (rc)
675 break;
676
677 done += block_size;
678 length -= block_size;
679 }
680
681 if (!rc) {
682 cmd->length = 0;
683 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
684 }
685
686 kfree(cmd);
687
688 return rc;
689}
690
691static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
692 const u8 *data, size_t length)
693{
694 unsigned char *buffer;
695 int may_continue, rc = 0;
696 u32 done, prev_block_size;
697
698 buffer = kmalloc(1024, GFP_KERNEL);
699 if (buffer == NULL)
700 return -ENOMEM;
701
702 done = 0;
703 prev_block_size = 0;
704 may_continue = 1000;
705 while (may_continue > 0) {
706 u32 block_size;
707
708 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
709 if (block_size & 1) {
710 block_size &= ~1;
711 may_continue--;
712 } else {
713 done += prev_block_size;
714 length -= prev_block_size;
715 }
716
717 if (block_size > 1024 || block_size > length) {
718 rc = -EOVERFLOW;
719 break;
720 }
721
722 if (length == 0) {
723 rc = 0;
724 break;
725 }
726
727 if (block_size == 0) {
728 rc = -EPROTO;
729 may_continue--;
730 udelay(1);
731 continue;
732 }
733
734 prev_block_size = block_size;
735 memcpy(buffer, data + done, block_size);
736
737 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
738 if (rc)
739 break;
740 }
741
742 if (!rc && length != 0)
743 rc = -EREMOTEIO;
744
745 kfree(buffer);
746
747 return rc;
748}
749
750static int mwl8k_load_firmware(struct ieee80211_hw *hw)
751{
752 struct mwl8k_priv *priv = hw->priv;
753 const struct firmware *fw = priv->fw_ucode;
754 int rc;
755 int loops;
756
757 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
758 const struct firmware *helper = priv->fw_helper;
759
760 if (helper == NULL) {
761 printk(KERN_ERR "%s: helper image needed but none "
762 "given\n", pci_name(priv->pdev));
763 return -EINVAL;
764 }
765
766 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
767 if (rc) {
768 printk(KERN_ERR "%s: unable to load firmware "
769 "helper image\n", pci_name(priv->pdev));
770 return rc;
771 }
772 msleep(20);
773
774 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
775 } else {
776 if (priv->is_8764)
777 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
778 else
779 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
780 }
781
782 if (rc) {
783 printk(KERN_ERR "%s: unable to load firmware image\n",
784 pci_name(priv->pdev));
785 return rc;
786 }
787
788 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
789
790 loops = 500000;
791 do {
792 u32 ready_code;
793
794 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
795 if (ready_code == MWL8K_FWAP_READY) {
796 priv->ap_fw = true;
797 break;
798 } else if (ready_code == MWL8K_FWSTA_READY) {
799 priv->ap_fw = false;
800 break;
801 }
802
803 cond_resched();
804 udelay(1);
805 } while (--loops);
806
807 return loops ? 0 : -ETIMEDOUT;
808}
809
810
811/* DMA header used by firmware and hardware. */
812struct mwl8k_dma_data {
813 __le16 fwlen;
814 struct ieee80211_hdr wh;
815 char data[];
816} __packed __aligned(2);
817
818/* Routines to add/remove DMA header from skb. */
819static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
820{
821 struct mwl8k_dma_data *tr;
822 int hdrlen;
823
824 tr = (struct mwl8k_dma_data *)skb->data;
825 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
826
827 if (hdrlen != sizeof(tr->wh)) {
828 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
829 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
830 *((__le16 *)(tr->data - 2)) = qos;
831 } else {
832 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
833 }
834 }
835
836 if (hdrlen != sizeof(*tr))
837 skb_pull(skb, sizeof(*tr) - hdrlen);
838}
839
840#define REDUCED_TX_HEADROOM 8
841
842static void
843mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
844 int head_pad, int tail_pad)
845{
846 struct ieee80211_hdr *wh;
847 int hdrlen;
848 int reqd_hdrlen;
849 struct mwl8k_dma_data *tr;
850
851 /*
852 * Add a firmware DMA header; the firmware requires that we
853 * present a 2-byte payload length followed by a 4-address
854 * header (without QoS field), followed (optionally) by any
855 * WEP/ExtIV header (but only filled in for CCMP).
856 */
857 wh = (struct ieee80211_hdr *)skb->data;
858
859 hdrlen = ieee80211_hdrlen(wh->frame_control);
860
861 /*
862 * Check if skb_resize is required because of
863 * tx_headroom adjustment.
864 */
865 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
866 + REDUCED_TX_HEADROOM))) {
867 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
868
869 wiphy_err(priv->hw->wiphy,
870 "Failed to reallocate TX buffer\n");
871 return;
872 }
873 skb->truesize += REDUCED_TX_HEADROOM;
874 }
875
876 reqd_hdrlen = sizeof(*tr) + head_pad;
877
878 if (hdrlen != reqd_hdrlen)
879 skb_push(skb, reqd_hdrlen - hdrlen);
880
881 if (ieee80211_is_data_qos(wh->frame_control))
882 hdrlen -= IEEE80211_QOS_CTL_LEN;
883
884 tr = (struct mwl8k_dma_data *)skb->data;
885 if (wh != &tr->wh)
886 memmove(&tr->wh, wh, hdrlen);
887 if (hdrlen != sizeof(tr->wh))
888 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
889
890 /*
891 * Firmware length is the length of the fully formed "802.11
892 * payload". That is, everything except for the 802.11 header.
893 * This includes all crypto material including the MIC.
894 */
895 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
896}
897
898static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
899 struct sk_buff *skb)
900{
901 struct ieee80211_hdr *wh;
902 struct ieee80211_tx_info *tx_info;
903 struct ieee80211_key_conf *key_conf;
904 int data_pad;
905 int head_pad = 0;
906
907 wh = (struct ieee80211_hdr *)skb->data;
908
909 tx_info = IEEE80211_SKB_CB(skb);
910
911 key_conf = NULL;
912 if (ieee80211_is_data(wh->frame_control))
913 key_conf = tx_info->control.hw_key;
914
915 /*
916 * Make sure the packet header is in the DMA header format (4-address
917 * without QoS), and add head & tail padding when HW crypto is enabled.
918 *
919 * We have the following trailer padding requirements:
920 * - WEP: 4 trailer bytes (ICV)
921 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
922 * - CCMP: 8 trailer bytes (MIC)
923 */
924 data_pad = 0;
925 if (key_conf != NULL) {
926 head_pad = key_conf->iv_len;
927 switch (key_conf->cipher) {
928 case WLAN_CIPHER_SUITE_WEP40:
929 case WLAN_CIPHER_SUITE_WEP104:
930 data_pad = 4;
931 break;
932 case WLAN_CIPHER_SUITE_TKIP:
933 data_pad = 12;
934 break;
935 case WLAN_CIPHER_SUITE_CCMP:
936 data_pad = 8;
937 break;
938 }
939 }
940 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
941}
942
943/*
944 * Packet reception for 88w8366/88w8764 AP firmware.
945 */
946struct mwl8k_rxd_ap {
947 __le16 pkt_len;
948 __u8 sq2;
949 __u8 rate;
950 __le32 pkt_phys_addr;
951 __le32 next_rxd_phys_addr;
952 __le16 qos_control;
953 __le16 htsig2;
954 __le32 hw_rssi_info;
955 __le32 hw_noise_floor_info;
956 __u8 noise_floor;
957 __u8 pad0[3];
958 __u8 rssi;
959 __u8 rx_status;
960 __u8 channel;
961 __u8 rx_ctrl;
962} __packed;
963
964#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
965#define MWL8K_AP_RATE_INFO_40MHZ 0x40
966#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
967
968#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
969
970/* 8366/8764 AP rx_status bits */
971#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
972#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
973#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
974#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
975#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
976
977static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
978{
979 struct mwl8k_rxd_ap *rxd = _rxd;
980
981 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
982 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
983}
984
985static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
986{
987 struct mwl8k_rxd_ap *rxd = _rxd;
988
989 rxd->pkt_len = cpu_to_le16(len);
990 rxd->pkt_phys_addr = cpu_to_le32(addr);
991 wmb();
992 rxd->rx_ctrl = 0;
993}
994
995static int
996mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
997 __le16 *qos, s8 *noise)
998{
999 struct mwl8k_rxd_ap *rxd = _rxd;
1000
1001 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
1002 return -1;
1003 rmb();
1004
1005 memset(status, 0, sizeof(*status));
1006
1007 status->signal = -rxd->rssi;
1008 *noise = -rxd->noise_floor;
1009
1010 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
1011 status->encoding = RX_ENC_HT;
1012 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
1013 status->bw = RATE_INFO_BW_40;
1014 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
1015 } else {
1016 int i;
1017
1018 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
1019 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
1020 status->rate_idx = i;
1021 break;
1022 }
1023 }
1024 }
1025
1026 if (rxd->channel > 14) {
1027 status->band = NL80211_BAND_5GHZ;
1028 if (!(status->encoding == RX_ENC_HT) &&
1029 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1030 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1031 } else {
1032 status->band = NL80211_BAND_2GHZ;
1033 }
1034 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1035 status->band);
1036
1037 *qos = rxd->qos_control;
1038
1039 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1040 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1041 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1042 status->flag |= RX_FLAG_MMIC_ERROR;
1043
1044 return le16_to_cpu(rxd->pkt_len);
1045}
1046
1047static struct rxd_ops rxd_ap_ops = {
1048 .rxd_size = sizeof(struct mwl8k_rxd_ap),
1049 .rxd_init = mwl8k_rxd_ap_init,
1050 .rxd_refill = mwl8k_rxd_ap_refill,
1051 .rxd_process = mwl8k_rxd_ap_process,
1052};
1053
1054/*
1055 * Packet reception for STA firmware.
1056 */
1057struct mwl8k_rxd_sta {
1058 __le16 pkt_len;
1059 __u8 link_quality;
1060 __u8 noise_level;
1061 __le32 pkt_phys_addr;
1062 __le32 next_rxd_phys_addr;
1063 __le16 qos_control;
1064 __le16 rate_info;
1065 __le32 pad0[4];
1066 __u8 rssi;
1067 __u8 channel;
1068 __le16 pad1;
1069 __u8 rx_ctrl;
1070 __u8 rx_status;
1071 __u8 pad2[2];
1072} __packed;
1073
1074#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1075#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1076#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1077#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1078#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1079#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1080
1081#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1082#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1083/* ICV=0 or MIC=1 */
1084#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1085/* Key is uploaded only in failure case */
1086#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1087
1088static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1089{
1090 struct mwl8k_rxd_sta *rxd = _rxd;
1091
1092 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1093 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1094}
1095
1096static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1097{
1098 struct mwl8k_rxd_sta *rxd = _rxd;
1099
1100 rxd->pkt_len = cpu_to_le16(len);
1101 rxd->pkt_phys_addr = cpu_to_le32(addr);
1102 wmb();
1103 rxd->rx_ctrl = 0;
1104}
1105
1106static int
1107mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1108 __le16 *qos, s8 *noise)
1109{
1110 struct mwl8k_rxd_sta *rxd = _rxd;
1111 u16 rate_info;
1112
1113 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1114 return -1;
1115 rmb();
1116
1117 rate_info = le16_to_cpu(rxd->rate_info);
1118
1119 memset(status, 0, sizeof(*status));
1120
1121 status->signal = -rxd->rssi;
1122 *noise = -rxd->noise_level;
1123 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1124 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1125
1126 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1127 status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
1128 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1129 status->bw = RATE_INFO_BW_40;
1130 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1131 status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
1132 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1133 status->encoding = RX_ENC_HT;
1134
1135 if (rxd->channel > 14) {
1136 status->band = NL80211_BAND_5GHZ;
1137 if (!(status->encoding == RX_ENC_HT) &&
1138 status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET)
1139 status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET;
1140 } else {
1141 status->band = NL80211_BAND_2GHZ;
1142 }
1143 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1144 status->band);
1145
1146 *qos = rxd->qos_control;
1147 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1148 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1149 status->flag |= RX_FLAG_MMIC_ERROR;
1150
1151 return le16_to_cpu(rxd->pkt_len);
1152}
1153
1154static struct rxd_ops rxd_sta_ops = {
1155 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1156 .rxd_init = mwl8k_rxd_sta_init,
1157 .rxd_refill = mwl8k_rxd_sta_refill,
1158 .rxd_process = mwl8k_rxd_sta_process,
1159};
1160
1161
1162#define MWL8K_RX_DESCS 256
1163#define MWL8K_RX_MAXSZ 3800
1164
1165static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1166{
1167 struct mwl8k_priv *priv = hw->priv;
1168 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1169 int size;
1170 int i;
1171
1172 rxq->rxd_count = 0;
1173 rxq->head = 0;
1174 rxq->tail = 0;
1175
1176 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1177
1178 rxq->rxd = dma_alloc_coherent(&priv->pdev->dev, size, &rxq->rxd_dma,
1179 GFP_KERNEL);
1180 if (rxq->rxd == NULL) {
1181 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1182 return -ENOMEM;
1183 }
1184
1185 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1186 if (rxq->buf == NULL) {
1187 dma_free_coherent(&priv->pdev->dev, size, rxq->rxd,
1188 rxq->rxd_dma);
1189 return -ENOMEM;
1190 }
1191
1192 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1193 int desc_size;
1194 void *rxd;
1195 int nexti;
1196 dma_addr_t next_dma_addr;
1197
1198 desc_size = priv->rxd_ops->rxd_size;
1199 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1200
1201 nexti = i + 1;
1202 if (nexti == MWL8K_RX_DESCS)
1203 nexti = 0;
1204 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1205
1206 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1207 }
1208
1209 return 0;
1210}
1211
1212static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1213{
1214 struct mwl8k_priv *priv = hw->priv;
1215 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1216 int refilled = 0;
1217
1218 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1219 struct sk_buff *skb;
1220 dma_addr_t addr;
1221 int rx;
1222 void *rxd;
1223
1224 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1225 if (skb == NULL)
1226 break;
1227
1228 addr = dma_map_single(&priv->pdev->dev, skb->data,
1229 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1230
1231 rxq->rxd_count++;
1232 rx = rxq->tail++;
1233 if (rxq->tail == MWL8K_RX_DESCS)
1234 rxq->tail = 0;
1235 rxq->buf[rx].skb = skb;
1236 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1237
1238 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1239 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1240
1241 refilled++;
1242 }
1243
1244 return refilled;
1245}
1246
1247/* Must be called only when the card's reception is completely halted */
1248static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1249{
1250 struct mwl8k_priv *priv = hw->priv;
1251 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1252 int i;
1253
1254 if (rxq->rxd == NULL)
1255 return;
1256
1257 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1258 if (rxq->buf[i].skb != NULL) {
1259 dma_unmap_single(&priv->pdev->dev,
1260 dma_unmap_addr(&rxq->buf[i], dma),
1261 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1262 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1263
1264 kfree_skb(rxq->buf[i].skb);
1265 rxq->buf[i].skb = NULL;
1266 }
1267 }
1268
1269 kfree(rxq->buf);
1270 rxq->buf = NULL;
1271
1272 dma_free_coherent(&priv->pdev->dev,
1273 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, rxq->rxd,
1274 rxq->rxd_dma);
1275 rxq->rxd = NULL;
1276}
1277
1278
1279/*
1280 * Scan a list of BSSIDs to process for finalize join.
1281 * Allows for extension to process multiple BSSIDs.
1282 */
1283static inline int
1284mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1285{
1286 return priv->capture_beacon &&
1287 ieee80211_is_beacon(wh->frame_control) &&
1288 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
1289}
1290
1291static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1292 struct sk_buff *skb)
1293{
1294 struct mwl8k_priv *priv = hw->priv;
1295
1296 priv->capture_beacon = false;
1297 eth_zero_addr(priv->capture_bssid);
1298
1299 /*
1300 * Use GFP_ATOMIC as rxq_process is called from
1301 * the primary interrupt handler, memory allocation call
1302 * must not sleep.
1303 */
1304 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1305 if (priv->beacon_skb != NULL)
1306 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1307}
1308
1309static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1310 u8 *bssid)
1311{
1312 struct mwl8k_vif *mwl8k_vif;
1313
1314 list_for_each_entry(mwl8k_vif,
1315 vif_list, list) {
1316 if (memcmp(bssid, mwl8k_vif->bssid,
1317 ETH_ALEN) == 0)
1318 return mwl8k_vif;
1319 }
1320
1321 return NULL;
1322}
1323
1324static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1325{
1326 struct mwl8k_priv *priv = hw->priv;
1327 struct mwl8k_vif *mwl8k_vif = NULL;
1328 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1329 int processed;
1330
1331 processed = 0;
1332 while (rxq->rxd_count && limit--) {
1333 struct sk_buff *skb;
1334 void *rxd;
1335 int pkt_len;
1336 struct ieee80211_rx_status status;
1337 struct ieee80211_hdr *wh;
1338 __le16 qos;
1339
1340 skb = rxq->buf[rxq->head].skb;
1341 if (skb == NULL)
1342 break;
1343
1344 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1345
1346 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1347 &priv->noise);
1348 if (pkt_len < 0)
1349 break;
1350
1351 rxq->buf[rxq->head].skb = NULL;
1352
1353 dma_unmap_single(&priv->pdev->dev,
1354 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1355 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1356 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1357
1358 rxq->head++;
1359 if (rxq->head == MWL8K_RX_DESCS)
1360 rxq->head = 0;
1361
1362 rxq->rxd_count--;
1363
1364 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1365
1366 /*
1367 * Check for a pending join operation. Save a
1368 * copy of the beacon and schedule a tasklet to
1369 * send a FINALIZE_JOIN command to the firmware.
1370 */
1371 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1372 mwl8k_save_beacon(hw, skb);
1373
1374 if (ieee80211_has_protected(wh->frame_control)) {
1375
1376 /* Check if hw crypto has been enabled for
1377 * this bss. If yes, set the status flags
1378 * accordingly
1379 */
1380 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1381 wh->addr1);
1382
1383 if (mwl8k_vif != NULL &&
1384 mwl8k_vif->is_hw_crypto_enabled) {
1385 /*
1386 * When MMIC ERROR is encountered
1387 * by the firmware, payload is
1388 * dropped and only 32 bytes of
1389 * mwl8k Firmware header is sent
1390 * to the host.
1391 *
1392 * We need to add four bytes of
1393 * key information. In it
1394 * MAC80211 expects keyidx set to
1395 * 0 for triggering Counter
1396 * Measure of MMIC failure.
1397 */
1398 if (status.flag & RX_FLAG_MMIC_ERROR) {
1399 struct mwl8k_dma_data *tr;
1400 tr = (struct mwl8k_dma_data *)skb->data;
1401 memset((void *)&(tr->data), 0, 4);
1402 pkt_len += 4;
1403 }
1404
1405 if (!ieee80211_is_auth(wh->frame_control))
1406 status.flag |= RX_FLAG_IV_STRIPPED |
1407 RX_FLAG_DECRYPTED |
1408 RX_FLAG_MMIC_STRIPPED;
1409 }
1410 }
1411
1412 skb_put(skb, pkt_len);
1413 mwl8k_remove_dma_header(skb, qos);
1414 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1415 ieee80211_rx_irqsafe(hw, skb);
1416
1417 processed++;
1418 }
1419
1420 return processed;
1421}
1422
1423
1424/*
1425 * Packet transmission.
1426 */
1427
1428#define MWL8K_TXD_STATUS_OK 0x00000001
1429#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1430#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1431#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1432#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1433
1434#define MWL8K_QOS_QLEN_UNSPEC 0xff00
1435#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1436#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1437#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1438#define MWL8K_QOS_EOSP 0x0010
1439
1440struct mwl8k_tx_desc {
1441 __le32 status;
1442 __u8 data_rate;
1443 __u8 tx_priority;
1444 __le16 qos_control;
1445 __le32 pkt_phys_addr;
1446 __le16 pkt_len;
1447 __u8 dest_MAC_addr[ETH_ALEN];
1448 __le32 next_txd_phys_addr;
1449 __le32 timestamp;
1450 __le16 rate_info;
1451 __u8 peer_id;
1452 __u8 tx_frag_cnt;
1453} __packed;
1454
1455#define MWL8K_TX_DESCS 128
1456
1457static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1458{
1459 struct mwl8k_priv *priv = hw->priv;
1460 struct mwl8k_tx_queue *txq = priv->txq + index;
1461 int size;
1462 int i;
1463
1464 txq->len = 0;
1465 txq->head = 0;
1466 txq->tail = 0;
1467
1468 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1469
1470 txq->txd = dma_alloc_coherent(&priv->pdev->dev, size, &txq->txd_dma,
1471 GFP_KERNEL);
1472 if (txq->txd == NULL) {
1473 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1474 return -ENOMEM;
1475 }
1476
1477 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1478 if (txq->skb == NULL) {
1479 dma_free_coherent(&priv->pdev->dev, size, txq->txd,
1480 txq->txd_dma);
1481 txq->txd = NULL;
1482 return -ENOMEM;
1483 }
1484
1485 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1486 struct mwl8k_tx_desc *tx_desc;
1487 int nexti;
1488
1489 tx_desc = txq->txd + i;
1490 nexti = (i + 1) % MWL8K_TX_DESCS;
1491
1492 tx_desc->status = 0;
1493 tx_desc->next_txd_phys_addr =
1494 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1495 }
1496
1497 return 0;
1498}
1499
1500static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1501{
1502 iowrite32(MWL8K_H2A_INT_PPA_READY,
1503 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1504 iowrite32(MWL8K_H2A_INT_DUMMY,
1505 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1506 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1507}
1508
1509static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1510{
1511 struct mwl8k_priv *priv = hw->priv;
1512 int i;
1513
1514 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1515 struct mwl8k_tx_queue *txq = priv->txq + i;
1516 int fw_owned = 0;
1517 int drv_owned = 0;
1518 int unused = 0;
1519 int desc;
1520
1521 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1522 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1523 u32 status;
1524
1525 status = le32_to_cpu(tx_desc->status);
1526 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1527 fw_owned++;
1528 else
1529 drv_owned++;
1530
1531 if (tx_desc->pkt_len == 0)
1532 unused++;
1533 }
1534
1535 wiphy_err(hw->wiphy,
1536 "txq[%d] len=%d head=%d tail=%d "
1537 "fw_owned=%d drv_owned=%d unused=%d\n",
1538 i,
1539 txq->len, txq->head, txq->tail,
1540 fw_owned, drv_owned, unused);
1541 }
1542}
1543
1544/*
1545 * Must be called with priv->fw_mutex held and tx queues stopped.
1546 */
1547#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1548
1549static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1550{
1551 struct mwl8k_priv *priv = hw->priv;
1552 DECLARE_COMPLETION_ONSTACK(tx_wait);
1553 int retry;
1554 int rc;
1555
1556 might_sleep();
1557
1558 /* Since fw restart is in progress, allow only the firmware
1559 * commands from the restart code and block the other
1560 * commands since they are going to fail in any case since
1561 * the firmware has crashed
1562 */
1563 if (priv->hw_restart_in_progress) {
1564 if (priv->hw_restart_owner == current)
1565 return 0;
1566 else
1567 return -EBUSY;
1568 }
1569
1570 if (atomic_read(&priv->watchdog_event_pending))
1571 return 0;
1572
1573 /*
1574 * The TX queues are stopped at this point, so this test
1575 * doesn't need to take ->tx_lock.
1576 */
1577 if (!priv->pending_tx_pkts)
1578 return 0;
1579
1580 retry = 1;
1581 rc = 0;
1582
1583 spin_lock_bh(&priv->tx_lock);
1584 priv->tx_wait = &tx_wait;
1585 while (!rc) {
1586 int oldcount;
1587 unsigned long timeout;
1588
1589 oldcount = priv->pending_tx_pkts;
1590
1591 spin_unlock_bh(&priv->tx_lock);
1592 timeout = wait_for_completion_timeout(&tx_wait,
1593 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1594
1595 if (atomic_read(&priv->watchdog_event_pending)) {
1596 spin_lock_bh(&priv->tx_lock);
1597 priv->tx_wait = NULL;
1598 spin_unlock_bh(&priv->tx_lock);
1599 return 0;
1600 }
1601
1602 spin_lock_bh(&priv->tx_lock);
1603
1604 if (timeout || !priv->pending_tx_pkts) {
1605 WARN_ON(priv->pending_tx_pkts);
1606 if (retry)
1607 wiphy_notice(hw->wiphy, "tx rings drained\n");
1608 break;
1609 }
1610
1611 if (retry) {
1612 mwl8k_tx_start(priv);
1613 retry = 0;
1614 continue;
1615 }
1616
1617 if (priv->pending_tx_pkts < oldcount) {
1618 wiphy_notice(hw->wiphy,
1619 "waiting for tx rings to drain (%d -> %d pkts)\n",
1620 oldcount, priv->pending_tx_pkts);
1621 retry = 1;
1622 continue;
1623 }
1624
1625 priv->tx_wait = NULL;
1626
1627 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1628 MWL8K_TX_WAIT_TIMEOUT_MS);
1629 mwl8k_dump_tx_rings(hw);
1630 priv->hw_restart_in_progress = true;
1631 ieee80211_queue_work(hw, &priv->fw_reload);
1632
1633 rc = -ETIMEDOUT;
1634 }
1635 priv->tx_wait = NULL;
1636 spin_unlock_bh(&priv->tx_lock);
1637
1638 return rc;
1639}
1640
1641#define MWL8K_TXD_SUCCESS(status) \
1642 ((status) & (MWL8K_TXD_STATUS_OK | \
1643 MWL8K_TXD_STATUS_OK_RETRY | \
1644 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1645
1646static int mwl8k_tid_queue_mapping(u8 tid)
1647{
1648 BUG_ON(tid > 7);
1649
1650 switch (tid) {
1651 case 0:
1652 case 3:
1653 return IEEE80211_AC_BE;
1654 case 1:
1655 case 2:
1656 return IEEE80211_AC_BK;
1657 case 4:
1658 case 5:
1659 return IEEE80211_AC_VI;
1660 case 6:
1661 case 7:
1662 return IEEE80211_AC_VO;
1663 default:
1664 return -1;
1665 }
1666}
1667
1668/* The firmware will fill in the rate information
1669 * for each packet that gets queued in the hardware
1670 * and these macros will interpret that info.
1671 */
1672
1673#define RI_FORMAT(a) (a & 0x0001)
1674#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1675
1676static int
1677mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1678{
1679 struct mwl8k_priv *priv = hw->priv;
1680 struct mwl8k_tx_queue *txq = priv->txq + index;
1681 int processed;
1682
1683 processed = 0;
1684 while (txq->len > 0 && limit--) {
1685 int tx;
1686 struct mwl8k_tx_desc *tx_desc;
1687 unsigned long addr;
1688 int size;
1689 struct sk_buff *skb;
1690 struct ieee80211_tx_info *info;
1691 u32 status;
1692 struct ieee80211_sta *sta;
1693 struct mwl8k_sta *sta_info = NULL;
1694 u16 rate_info;
1695 struct ieee80211_hdr *wh;
1696
1697 tx = txq->head;
1698 tx_desc = txq->txd + tx;
1699
1700 status = le32_to_cpu(tx_desc->status);
1701
1702 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1703 if (!force)
1704 break;
1705 tx_desc->status &=
1706 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1707 }
1708
1709 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1710 BUG_ON(txq->len == 0);
1711 txq->len--;
1712 priv->pending_tx_pkts--;
1713
1714 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1715 size = le16_to_cpu(tx_desc->pkt_len);
1716 skb = txq->skb[tx];
1717 txq->skb[tx] = NULL;
1718
1719 BUG_ON(skb == NULL);
1720 dma_unmap_single(&priv->pdev->dev, addr, size, DMA_TO_DEVICE);
1721
1722 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1723
1724 wh = (struct ieee80211_hdr *) skb->data;
1725
1726 /* Mark descriptor as unused */
1727 tx_desc->pkt_phys_addr = 0;
1728 tx_desc->pkt_len = 0;
1729
1730 info = IEEE80211_SKB_CB(skb);
1731 if (ieee80211_is_data(wh->frame_control)) {
1732 rcu_read_lock();
1733 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1734 wh->addr2);
1735 if (sta) {
1736 sta_info = MWL8K_STA(sta);
1737 BUG_ON(sta_info == NULL);
1738 rate_info = le16_to_cpu(tx_desc->rate_info);
1739 /* If rate is < 6.5 Mpbs for an ht station
1740 * do not form an ampdu. If the station is a
1741 * legacy station (format = 0), do not form an
1742 * ampdu
1743 */
1744 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1745 RI_FORMAT(rate_info) == 0) {
1746 sta_info->is_ampdu_allowed = false;
1747 } else {
1748 sta_info->is_ampdu_allowed = true;
1749 }
1750 }
1751 rcu_read_unlock();
1752 }
1753
1754 ieee80211_tx_info_clear_status(info);
1755
1756 /* Rate control is happening in the firmware.
1757 * Ensure no tx rate is being reported.
1758 */
1759 info->status.rates[0].idx = -1;
1760 info->status.rates[0].count = 1;
1761
1762 if (MWL8K_TXD_SUCCESS(status))
1763 info->flags |= IEEE80211_TX_STAT_ACK;
1764
1765 ieee80211_tx_status_irqsafe(hw, skb);
1766
1767 processed++;
1768 }
1769
1770 return processed;
1771}
1772
1773/* must be called only when the card's transmit is completely halted */
1774static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1775{
1776 struct mwl8k_priv *priv = hw->priv;
1777 struct mwl8k_tx_queue *txq = priv->txq + index;
1778
1779 if (txq->txd == NULL)
1780 return;
1781
1782 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1783
1784 kfree(txq->skb);
1785 txq->skb = NULL;
1786
1787 dma_free_coherent(&priv->pdev->dev,
1788 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1789 txq->txd, txq->txd_dma);
1790 txq->txd = NULL;
1791}
1792
1793/* caller must hold priv->stream_lock when calling the stream functions */
1794static struct mwl8k_ampdu_stream *
1795mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1796{
1797 struct mwl8k_ampdu_stream *stream;
1798 struct mwl8k_priv *priv = hw->priv;
1799 int i;
1800
1801 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1802 stream = &priv->ampdu[i];
1803 if (stream->state == AMPDU_NO_STREAM) {
1804 stream->sta = sta;
1805 stream->state = AMPDU_STREAM_NEW;
1806 stream->tid = tid;
1807 stream->idx = i;
1808 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1809 sta->addr, tid);
1810 return stream;
1811 }
1812 }
1813 return NULL;
1814}
1815
1816static int
1817mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1818{
1819 int ret;
1820
1821 /* if the stream has already been started, don't start it again */
1822 if (stream->state != AMPDU_STREAM_NEW)
1823 return 0;
1824 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1825 if (ret)
1826 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1827 "%d\n", stream->sta->addr, stream->tid, ret);
1828 else
1829 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1830 stream->sta->addr, stream->tid);
1831 return ret;
1832}
1833
1834static void
1835mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1836{
1837 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1838 stream->tid);
1839 memset(stream, 0, sizeof(*stream));
1840}
1841
1842static struct mwl8k_ampdu_stream *
1843mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1844{
1845 struct mwl8k_priv *priv = hw->priv;
1846 int i;
1847
1848 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1849 struct mwl8k_ampdu_stream *stream;
1850 stream = &priv->ampdu[i];
1851 if (stream->state == AMPDU_NO_STREAM)
1852 continue;
1853 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1854 stream->tid == tid)
1855 return stream;
1856 }
1857 return NULL;
1858}
1859
1860#define MWL8K_AMPDU_PACKET_THRESHOLD 64
1861static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1862{
1863 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1864 struct tx_traffic_info *tx_stats;
1865
1866 BUG_ON(tid >= MWL8K_MAX_TID);
1867 tx_stats = &sta_info->tx_stats[tid];
1868
1869 return sta_info->is_ampdu_allowed &&
1870 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1871}
1872
1873static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1874{
1875 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1876 struct tx_traffic_info *tx_stats;
1877
1878 BUG_ON(tid >= MWL8K_MAX_TID);
1879 tx_stats = &sta_info->tx_stats[tid];
1880
1881 if (tx_stats->start_time == 0)
1882 tx_stats->start_time = jiffies;
1883
1884 /* reset the packet count after each second elapses. If the number of
1885 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1886 * an ampdu stream to be started.
1887 */
1888 if (time_after(jiffies, (unsigned long)tx_stats->start_time + HZ)) {
1889 tx_stats->pkts = 0;
1890 tx_stats->start_time = 0;
1891 } else
1892 tx_stats->pkts++;
1893}
1894
1895/* The hardware ampdu queues start from 5.
1896 * txpriorities for ampdu queues are
1897 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1898 * and queue 3 is lowest (queue 4 is reserved)
1899 */
1900#define BA_QUEUE 5
1901
1902static void
1903mwl8k_txq_xmit(struct ieee80211_hw *hw,
1904 int index,
1905 struct ieee80211_sta *sta,
1906 struct sk_buff *skb)
1907{
1908 struct mwl8k_priv *priv = hw->priv;
1909 struct ieee80211_tx_info *tx_info;
1910 struct mwl8k_vif *mwl8k_vif;
1911 struct ieee80211_hdr *wh;
1912 struct mwl8k_tx_queue *txq;
1913 struct mwl8k_tx_desc *tx;
1914 dma_addr_t dma;
1915 u32 txstatus;
1916 u8 txdatarate;
1917 u16 qos;
1918 int txpriority;
1919 u8 tid = 0;
1920 struct mwl8k_ampdu_stream *stream = NULL;
1921 bool start_ba_session = false;
1922 bool mgmtframe = false;
1923 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1924 bool eapol_frame = false;
1925
1926 wh = (struct ieee80211_hdr *)skb->data;
1927 if (ieee80211_is_data_qos(wh->frame_control))
1928 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1929 else
1930 qos = 0;
1931
1932 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1933 eapol_frame = true;
1934
1935 if (ieee80211_is_mgmt(wh->frame_control))
1936 mgmtframe = true;
1937
1938 if (priv->ap_fw)
1939 mwl8k_encapsulate_tx_frame(priv, skb);
1940 else
1941 mwl8k_add_dma_header(priv, skb, 0, 0);
1942
1943 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1944
1945 tx_info = IEEE80211_SKB_CB(skb);
1946 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1947
1948 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1949 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1950 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1951 mwl8k_vif->seqno += 0x10;
1952 }
1953
1954 /* Setup firmware control bit fields for each frame type. */
1955 txstatus = 0;
1956 txdatarate = 0;
1957 if (ieee80211_is_mgmt(wh->frame_control) ||
1958 ieee80211_is_ctl(wh->frame_control)) {
1959 txdatarate = 0;
1960 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1961 } else if (ieee80211_is_data(wh->frame_control)) {
1962 txdatarate = 1;
1963 if (is_multicast_ether_addr(wh->addr1))
1964 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1965
1966 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1967 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1968 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1969 else
1970 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1971 }
1972
1973 /* Queue ADDBA request in the respective data queue. While setting up
1974 * the ampdu stream, mac80211 queues further packets for that
1975 * particular ra/tid pair. However, packets piled up in the hardware
1976 * for that ra/tid pair will still go out. ADDBA request and the
1977 * related data packets going out from different queues asynchronously
1978 * will cause a shift in the receiver window which might result in
1979 * ampdu packets getting dropped at the receiver after the stream has
1980 * been setup.
1981 */
1982 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1983 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1984 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1985 priv->ap_fw)) {
1986 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1987 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1988 index = mwl8k_tid_queue_mapping(tid);
1989 }
1990
1991 txpriority = index;
1992
1993 if (priv->ap_fw && sta && sta->deflink.ht_cap.ht_supported && !eapol_frame &&
1994 ieee80211_is_data_qos(wh->frame_control)) {
1995 tid = qos & 0xf;
1996 mwl8k_tx_count_packet(sta, tid);
1997 spin_lock(&priv->stream_lock);
1998 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1999 if (stream != NULL) {
2000 if (stream->state == AMPDU_STREAM_ACTIVE) {
2001 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
2002 txpriority = (BA_QUEUE + stream->idx) %
2003 TOTAL_HW_TX_QUEUES;
2004 if (stream->idx <= 1)
2005 index = stream->idx +
2006 MWL8K_TX_WMM_QUEUES;
2007
2008 } else if (stream->state == AMPDU_STREAM_NEW) {
2009 /* We get here if the driver sends us packets
2010 * after we've initiated a stream, but before
2011 * our ampdu_action routine has been called
2012 * with IEEE80211_AMPDU_TX_START to get the SSN
2013 * for the ADDBA request. So this packet can
2014 * go out with no risk of sequence number
2015 * mismatch. No special handling is required.
2016 */
2017 } else {
2018 /* Drop packets that would go out after the
2019 * ADDBA request was sent but before the ADDBA
2020 * response is received. If we don't do this,
2021 * the recipient would probably receive it
2022 * after the ADDBA request with SSN 0. This
2023 * will cause the recipient's BA receive window
2024 * to shift, which would cause the subsequent
2025 * packets in the BA stream to be discarded.
2026 * mac80211 queues our packets for us in this
2027 * case, so this is really just a safety check.
2028 */
2029 wiphy_warn(hw->wiphy,
2030 "Cannot send packet while ADDBA "
2031 "dialog is underway.\n");
2032 spin_unlock(&priv->stream_lock);
2033 dev_kfree_skb(skb);
2034 return;
2035 }
2036 } else {
2037 /* Defer calling mwl8k_start_stream so that the current
2038 * skb can go out before the ADDBA request. This
2039 * prevents sequence number mismatch at the recepient
2040 * as described above.
2041 */
2042 if (mwl8k_ampdu_allowed(sta, tid)) {
2043 stream = mwl8k_add_stream(hw, sta, tid);
2044 if (stream != NULL)
2045 start_ba_session = true;
2046 }
2047 }
2048 spin_unlock(&priv->stream_lock);
2049 } else {
2050 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2051 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2052 }
2053
2054 dma = dma_map_single(&priv->pdev->dev, skb->data, skb->len,
2055 DMA_TO_DEVICE);
2056
2057 if (dma_mapping_error(&priv->pdev->dev, dma)) {
2058 wiphy_debug(hw->wiphy,
2059 "failed to dma map skb, dropping TX frame.\n");
2060 if (start_ba_session) {
2061 spin_lock(&priv->stream_lock);
2062 mwl8k_remove_stream(hw, stream);
2063 spin_unlock(&priv->stream_lock);
2064 }
2065 dev_kfree_skb(skb);
2066 return;
2067 }
2068
2069 spin_lock_bh(&priv->tx_lock);
2070
2071 txq = priv->txq + index;
2072
2073 /* Mgmt frames that go out frequently are probe
2074 * responses. Other mgmt frames got out relatively
2075 * infrequently. Hence reserve 2 buffers so that
2076 * other mgmt frames do not get dropped due to an
2077 * already queued probe response in one of the
2078 * reserved buffers.
2079 */
2080
2081 if (txq->len >= MWL8K_TX_DESCS - 2) {
2082 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2083 if (start_ba_session) {
2084 spin_lock(&priv->stream_lock);
2085 mwl8k_remove_stream(hw, stream);
2086 spin_unlock(&priv->stream_lock);
2087 }
2088 mwl8k_tx_start(priv);
2089 spin_unlock_bh(&priv->tx_lock);
2090 dma_unmap_single(&priv->pdev->dev, dma, skb->len,
2091 DMA_TO_DEVICE);
2092 dev_kfree_skb(skb);
2093 return;
2094 }
2095 }
2096
2097 BUG_ON(txq->skb[txq->tail] != NULL);
2098 txq->skb[txq->tail] = skb;
2099
2100 tx = txq->txd + txq->tail;
2101 tx->data_rate = txdatarate;
2102 tx->tx_priority = txpriority;
2103 tx->qos_control = cpu_to_le16(qos);
2104 tx->pkt_phys_addr = cpu_to_le32(dma);
2105 tx->pkt_len = cpu_to_le16(skb->len);
2106 tx->rate_info = 0;
2107 if (!priv->ap_fw && sta != NULL)
2108 tx->peer_id = MWL8K_STA(sta)->peer_id;
2109 else
2110 tx->peer_id = 0;
2111
2112 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2113 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2114 MWL8K_HW_TIMER_REGISTER));
2115 else
2116 tx->timestamp = 0;
2117
2118 wmb();
2119 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2120
2121 txq->len++;
2122 priv->pending_tx_pkts++;
2123
2124 txq->tail++;
2125 if (txq->tail == MWL8K_TX_DESCS)
2126 txq->tail = 0;
2127
2128 mwl8k_tx_start(priv);
2129
2130 spin_unlock_bh(&priv->tx_lock);
2131
2132 /* Initiate the ampdu session here */
2133 if (start_ba_session) {
2134 spin_lock(&priv->stream_lock);
2135 if (mwl8k_start_stream(hw, stream))
2136 mwl8k_remove_stream(hw, stream);
2137 spin_unlock(&priv->stream_lock);
2138 }
2139}
2140
2141
2142/*
2143 * Firmware access.
2144 *
2145 * We have the following requirements for issuing firmware commands:
2146 * - Some commands require that the packet transmit path is idle when
2147 * the command is issued. (For simplicity, we'll just quiesce the
2148 * transmit path for every command.)
2149 * - There are certain sequences of commands that need to be issued to
2150 * the hardware sequentially, with no other intervening commands.
2151 *
2152 * This leads to an implementation of a "firmware lock" as a mutex that
2153 * can be taken recursively, and which is taken by both the low-level
2154 * command submission function (mwl8k_post_cmd) as well as any users of
2155 * that function that require issuing of an atomic sequence of commands,
2156 * and quiesces the transmit path whenever it's taken.
2157 */
2158static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2159{
2160 struct mwl8k_priv *priv = hw->priv;
2161
2162 if (priv->fw_mutex_owner != current) {
2163 int rc;
2164
2165 mutex_lock(&priv->fw_mutex);
2166 ieee80211_stop_queues(hw);
2167
2168 rc = mwl8k_tx_wait_empty(hw);
2169 if (rc) {
2170 if (!priv->hw_restart_in_progress)
2171 ieee80211_wake_queues(hw);
2172
2173 mutex_unlock(&priv->fw_mutex);
2174
2175 return rc;
2176 }
2177
2178 priv->fw_mutex_owner = current;
2179 }
2180
2181 priv->fw_mutex_depth++;
2182
2183 return 0;
2184}
2185
2186static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2187{
2188 struct mwl8k_priv *priv = hw->priv;
2189
2190 if (!--priv->fw_mutex_depth) {
2191 if (!priv->hw_restart_in_progress)
2192 ieee80211_wake_queues(hw);
2193
2194 priv->fw_mutex_owner = NULL;
2195 mutex_unlock(&priv->fw_mutex);
2196 }
2197}
2198
2199static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2200 u32 bitmap);
2201
2202/*
2203 * Command processing.
2204 */
2205
2206/* Timeout firmware commands after 10s */
2207#define MWL8K_CMD_TIMEOUT_MS 10000
2208
2209static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt_hdr *cmd)
2210{
2211 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2212 struct mwl8k_priv *priv = hw->priv;
2213 void __iomem *regs = priv->regs;
2214 dma_addr_t dma_addr;
2215 unsigned int dma_size;
2216 int rc;
2217 unsigned long time_left = 0;
2218 u8 buf[32];
2219 u32 bitmap = 0;
2220
2221 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2222 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2223
2224 /* Before posting firmware commands that could change the hardware
2225 * characteristics, make sure that all BSSes are stopped temporary.
2226 * Enable these stopped BSSes after completion of the commands
2227 */
2228
2229 rc = mwl8k_fw_lock(hw);
2230 if (rc)
2231 return rc;
2232
2233 if (priv->ap_fw && priv->running_bsses) {
2234 switch (le16_to_cpu(cmd->code)) {
2235 case MWL8K_CMD_SET_RF_CHANNEL:
2236 case MWL8K_CMD_RADIO_CONTROL:
2237 case MWL8K_CMD_RF_TX_POWER:
2238 case MWL8K_CMD_TX_POWER:
2239 case MWL8K_CMD_RF_ANTENNA:
2240 case MWL8K_CMD_RTS_THRESHOLD:
2241 case MWL8K_CMD_MIMO_CONFIG:
2242 bitmap = priv->running_bsses;
2243 mwl8k_enable_bsses(hw, false, bitmap);
2244 break;
2245 }
2246 }
2247
2248 cmd->result = (__force __le16) 0xffff;
2249 dma_size = le16_to_cpu(cmd->length);
2250 dma_addr = dma_map_single(&priv->pdev->dev, cmd, dma_size,
2251 DMA_BIDIRECTIONAL);
2252 if (dma_mapping_error(&priv->pdev->dev, dma_addr)) {
2253 rc = -ENOMEM;
2254 goto exit;
2255 }
2256
2257 priv->hostcmd_wait = &cmd_wait;
2258 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2259 iowrite32(MWL8K_H2A_INT_DOORBELL,
2260 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2261 iowrite32(MWL8K_H2A_INT_DUMMY,
2262 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2263
2264 time_left = wait_for_completion_timeout(&cmd_wait,
2265 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2266
2267 priv->hostcmd_wait = NULL;
2268
2269
2270 dma_unmap_single(&priv->pdev->dev, dma_addr, dma_size,
2271 DMA_BIDIRECTIONAL);
2272
2273 if (!time_left) {
2274 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2275 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2276 MWL8K_CMD_TIMEOUT_MS);
2277 rc = -ETIMEDOUT;
2278 } else {
2279 int ms;
2280
2281 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(time_left);
2282
2283 rc = cmd->result ? -EINVAL : 0;
2284 if (rc)
2285 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2286 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2287 le16_to_cpu(cmd->result));
2288 else if (ms > 2000)
2289 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2290 mwl8k_cmd_name(cmd->code,
2291 buf, sizeof(buf)),
2292 ms);
2293 }
2294
2295exit:
2296 if (bitmap)
2297 mwl8k_enable_bsses(hw, true, bitmap);
2298
2299 mwl8k_fw_unlock(hw);
2300
2301 return rc;
2302}
2303
2304static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2305 struct ieee80211_vif *vif,
2306 struct mwl8k_cmd_pkt_hdr *cmd)
2307{
2308 if (vif != NULL)
2309 cmd->macid = MWL8K_VIF(vif)->macid;
2310 return mwl8k_post_cmd(hw, cmd);
2311}
2312
2313/*
2314 * Setup code shared between STA and AP firmware images.
2315 */
2316static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2317{
2318 struct mwl8k_priv *priv = hw->priv;
2319
2320 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2321 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2322
2323 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2324 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2325
2326 priv->band_24.band = NL80211_BAND_2GHZ;
2327 priv->band_24.channels = priv->channels_24;
2328 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2329 priv->band_24.bitrates = priv->rates_24;
2330 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2331
2332 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band_24;
2333}
2334
2335static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2336{
2337 struct mwl8k_priv *priv = hw->priv;
2338
2339 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2340 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2341
2342 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2343 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2344
2345 priv->band_50.band = NL80211_BAND_5GHZ;
2346 priv->band_50.channels = priv->channels_50;
2347 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2348 priv->band_50.bitrates = priv->rates_50;
2349 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2350
2351 hw->wiphy->bands[NL80211_BAND_5GHZ] = &priv->band_50;
2352}
2353
2354/*
2355 * CMD_GET_HW_SPEC (STA version).
2356 */
2357struct mwl8k_cmd_get_hw_spec_sta {
2358 struct mwl8k_cmd_pkt_hdr header;
2359 __u8 hw_rev;
2360 __u8 host_interface;
2361 __le16 num_mcaddrs;
2362 __u8 perm_addr[ETH_ALEN];
2363 __le16 region_code;
2364 __le32 fw_rev;
2365 __le32 ps_cookie;
2366 __le32 caps;
2367 __u8 mcs_bitmap[16];
2368 __le32 rx_queue_ptr;
2369 __le32 num_tx_queues;
2370 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2371 __le32 caps2;
2372 __le32 num_tx_desc_per_queue;
2373 __le32 total_rxd;
2374} __packed;
2375
2376#define MWL8K_CAP_MAX_AMSDU 0x20000000
2377#define MWL8K_CAP_GREENFIELD 0x08000000
2378#define MWL8K_CAP_AMPDU 0x04000000
2379#define MWL8K_CAP_RX_STBC 0x01000000
2380#define MWL8K_CAP_TX_STBC 0x00800000
2381#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2382#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2383#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2384#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2385#define MWL8K_CAP_DELAY_BA 0x00003000
2386#define MWL8K_CAP_MIMO 0x00000200
2387#define MWL8K_CAP_40MHZ 0x00000100
2388#define MWL8K_CAP_BAND_MASK 0x00000007
2389#define MWL8K_CAP_5GHZ 0x00000004
2390#define MWL8K_CAP_2GHZ4 0x00000001
2391
2392static void
2393mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2394 struct ieee80211_supported_band *band, u32 cap)
2395{
2396 int rx_streams;
2397 int tx_streams;
2398
2399 band->ht_cap.ht_supported = 1;
2400
2401 if (cap & MWL8K_CAP_MAX_AMSDU)
2402 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2403 if (cap & MWL8K_CAP_GREENFIELD)
2404 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2405 if (cap & MWL8K_CAP_AMPDU) {
2406 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2407 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2408 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2409 }
2410 if (cap & MWL8K_CAP_RX_STBC)
2411 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2412 if (cap & MWL8K_CAP_TX_STBC)
2413 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2414 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2415 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2416 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2417 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2418 if (cap & MWL8K_CAP_DELAY_BA)
2419 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2420 if (cap & MWL8K_CAP_40MHZ)
2421 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2422
2423 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2424 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2425
2426 band->ht_cap.mcs.rx_mask[0] = 0xff;
2427 if (rx_streams >= 2)
2428 band->ht_cap.mcs.rx_mask[1] = 0xff;
2429 if (rx_streams >= 3)
2430 band->ht_cap.mcs.rx_mask[2] = 0xff;
2431 band->ht_cap.mcs.rx_mask[4] = 0x01;
2432 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2433
2434 if (rx_streams != tx_streams) {
2435 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2436 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2437 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2438 }
2439}
2440
2441static void
2442mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2443{
2444 struct mwl8k_priv *priv = hw->priv;
2445
2446 if (priv->caps)
2447 return;
2448
2449 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2450 mwl8k_setup_2ghz_band(hw);
2451 if (caps & MWL8K_CAP_MIMO)
2452 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2453 }
2454
2455 if (caps & MWL8K_CAP_5GHZ) {
2456 mwl8k_setup_5ghz_band(hw);
2457 if (caps & MWL8K_CAP_MIMO)
2458 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2459 }
2460
2461 priv->caps = caps;
2462}
2463
2464static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2465{
2466 struct mwl8k_priv *priv = hw->priv;
2467 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2468 int rc;
2469 int i;
2470
2471 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2472 if (cmd == NULL)
2473 return -ENOMEM;
2474
2475 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2476 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2477
2478 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2479 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2480 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2481 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2482 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2483 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2484 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2485 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2486
2487 rc = mwl8k_post_cmd(hw, &cmd->header);
2488
2489 if (!rc) {
2490 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2491 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2492 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2493 priv->hw_rev = cmd->hw_rev;
2494 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2495 priv->ap_macids_supported = 0x00000000;
2496 priv->sta_macids_supported = 0x00000001;
2497 }
2498
2499 kfree(cmd);
2500 return rc;
2501}
2502
2503/*
2504 * CMD_GET_HW_SPEC (AP version).
2505 */
2506struct mwl8k_cmd_get_hw_spec_ap {
2507 struct mwl8k_cmd_pkt_hdr header;
2508 __u8 hw_rev;
2509 __u8 host_interface;
2510 __le16 num_wcb;
2511 __le16 num_mcaddrs;
2512 __u8 perm_addr[ETH_ALEN];
2513 __le16 region_code;
2514 __le16 num_antenna;
2515 __le32 fw_rev;
2516 __le32 wcbbase0;
2517 __le32 rxwrptr;
2518 __le32 rxrdptr;
2519 __le32 ps_cookie;
2520 __le32 wcbbase1;
2521 __le32 wcbbase2;
2522 __le32 wcbbase3;
2523 __le32 fw_api_version;
2524 __le32 caps;
2525 __le32 num_of_ampdu_queues;
2526 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2527} __packed;
2528
2529static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2530{
2531 struct mwl8k_priv *priv = hw->priv;
2532 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2533 int rc, i;
2534 u32 api_version;
2535
2536 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2537 if (cmd == NULL)
2538 return -ENOMEM;
2539
2540 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2541 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2542
2543 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2544 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2545
2546 rc = mwl8k_post_cmd(hw, &cmd->header);
2547
2548 if (!rc) {
2549 int off;
2550
2551 api_version = le32_to_cpu(cmd->fw_api_version);
2552 if (priv->device_info->fw_api_ap != api_version) {
2553 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2554 " Expected %d got %d.\n", MWL8K_NAME,
2555 priv->device_info->part_name,
2556 priv->device_info->fw_api_ap,
2557 api_version);
2558 rc = -EINVAL;
2559 goto done;
2560 }
2561 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2562 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2563 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2564 priv->hw_rev = cmd->hw_rev;
2565 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2566 priv->ap_macids_supported = 0x000000ff;
2567 priv->sta_macids_supported = 0x00000100;
2568 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2569 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2570 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2571 " but we only support %d.\n",
2572 priv->num_ampdu_queues,
2573 MWL8K_MAX_AMPDU_QUEUES);
2574 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2575 }
2576 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2577 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2578
2579 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2580 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2581
2582 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2583 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2584 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2585 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2586
2587 for (i = 0; i < priv->num_ampdu_queues; i++)
2588 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2589 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2590 }
2591
2592done:
2593 kfree(cmd);
2594 return rc;
2595}
2596
2597/*
2598 * CMD_SET_HW_SPEC.
2599 */
2600struct mwl8k_cmd_set_hw_spec {
2601 struct mwl8k_cmd_pkt_hdr header;
2602 __u8 hw_rev;
2603 __u8 host_interface;
2604 __le16 num_mcaddrs;
2605 __u8 perm_addr[ETH_ALEN];
2606 __le16 region_code;
2607 __le32 fw_rev;
2608 __le32 ps_cookie;
2609 __le32 caps;
2610 __le32 rx_queue_ptr;
2611 __le32 num_tx_queues;
2612 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2613 __le32 flags;
2614 __le32 num_tx_desc_per_queue;
2615 __le32 total_rxd;
2616} __packed;
2617
2618/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2619 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2620 * the packets that are queued for more than 500ms, will be dropped in the
2621 * hardware. This helps minimizing the issues caused due to head-of-line
2622 * blocking where a slow client can hog the bandwidth and affect traffic to a
2623 * faster client.
2624 */
2625#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2626#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2627#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2628#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2629#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2630
2631static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2632{
2633 struct mwl8k_priv *priv = hw->priv;
2634 struct mwl8k_cmd_set_hw_spec *cmd;
2635 int rc;
2636 int i;
2637
2638 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2639 if (cmd == NULL)
2640 return -ENOMEM;
2641
2642 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2643 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2644
2645 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2646 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2647 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2648
2649 /*
2650 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2651 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2652 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2653 * priority is interpreted the right way in firmware.
2654 */
2655 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2656 int j = mwl8k_tx_queues(priv) - 1 - i;
2657 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2658 }
2659
2660 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2661 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2662 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2663 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2664 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2665 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2666 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2667
2668 rc = mwl8k_post_cmd(hw, &cmd->header);
2669 kfree(cmd);
2670
2671 return rc;
2672}
2673
2674/*
2675 * CMD_MAC_MULTICAST_ADR.
2676 */
2677struct mwl8k_cmd_mac_multicast_adr {
2678 struct mwl8k_cmd_pkt_hdr header;
2679 __le16 action;
2680 __le16 numaddr;
2681 __u8 addr[][ETH_ALEN];
2682};
2683
2684#define MWL8K_ENABLE_RX_DIRECTED 0x0001
2685#define MWL8K_ENABLE_RX_MULTICAST 0x0002
2686#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2687#define MWL8K_ENABLE_RX_BROADCAST 0x0008
2688
2689static struct mwl8k_cmd_pkt_hdr *
2690__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2691 struct netdev_hw_addr_list *mc_list)
2692{
2693 struct mwl8k_priv *priv = hw->priv;
2694 struct mwl8k_cmd_mac_multicast_adr *cmd;
2695 int size;
2696 int mc_count = 0;
2697
2698 if (mc_list)
2699 mc_count = netdev_hw_addr_list_count(mc_list);
2700
2701 if (allmulti || mc_count > priv->num_mcaddrs) {
2702 allmulti = 1;
2703 mc_count = 0;
2704 }
2705
2706 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2707
2708 cmd = kzalloc(size, GFP_ATOMIC);
2709 if (cmd == NULL)
2710 return NULL;
2711
2712 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2713 cmd->header.length = cpu_to_le16(size);
2714 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2715 MWL8K_ENABLE_RX_BROADCAST);
2716
2717 if (allmulti) {
2718 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2719 } else if (mc_count) {
2720 struct netdev_hw_addr *ha;
2721 int i = 0;
2722
2723 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2724 cmd->numaddr = cpu_to_le16(mc_count);
2725 netdev_hw_addr_list_for_each(ha, mc_list) {
2726 memcpy(cmd->addr[i++], ha->addr, ETH_ALEN);
2727 }
2728 }
2729
2730 return &cmd->header;
2731}
2732
2733/*
2734 * CMD_GET_STAT.
2735 */
2736struct mwl8k_cmd_get_stat {
2737 struct mwl8k_cmd_pkt_hdr header;
2738 __le32 stats[64];
2739} __packed;
2740
2741#define MWL8K_STAT_ACK_FAILURE 9
2742#define MWL8K_STAT_RTS_FAILURE 12
2743#define MWL8K_STAT_FCS_ERROR 24
2744#define MWL8K_STAT_RTS_SUCCESS 11
2745
2746static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2747 struct ieee80211_low_level_stats *stats)
2748{
2749 struct mwl8k_cmd_get_stat *cmd;
2750 int rc;
2751
2752 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2753 if (cmd == NULL)
2754 return -ENOMEM;
2755
2756 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2757 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2758
2759 rc = mwl8k_post_cmd(hw, &cmd->header);
2760 if (!rc) {
2761 stats->dot11ACKFailureCount =
2762 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2763 stats->dot11RTSFailureCount =
2764 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2765 stats->dot11FCSErrorCount =
2766 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2767 stats->dot11RTSSuccessCount =
2768 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2769 }
2770 kfree(cmd);
2771
2772 return rc;
2773}
2774
2775/*
2776 * CMD_RADIO_CONTROL.
2777 */
2778struct mwl8k_cmd_radio_control {
2779 struct mwl8k_cmd_pkt_hdr header;
2780 __le16 action;
2781 __le16 control;
2782 __le16 radio_on;
2783} __packed;
2784
2785static int
2786mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2787{
2788 struct mwl8k_priv *priv = hw->priv;
2789 struct mwl8k_cmd_radio_control *cmd;
2790 int rc;
2791
2792 if (enable == priv->radio_on && !force)
2793 return 0;
2794
2795 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2796 if (cmd == NULL)
2797 return -ENOMEM;
2798
2799 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2800 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2801 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2802 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2803 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2804
2805 rc = mwl8k_post_cmd(hw, &cmd->header);
2806 kfree(cmd);
2807
2808 if (!rc)
2809 priv->radio_on = enable;
2810
2811 return rc;
2812}
2813
2814static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2815{
2816 return mwl8k_cmd_radio_control(hw, 0, 0);
2817}
2818
2819static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2820{
2821 return mwl8k_cmd_radio_control(hw, 1, 0);
2822}
2823
2824static int
2825mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2826{
2827 struct mwl8k_priv *priv = hw->priv;
2828
2829 priv->radio_short_preamble = short_preamble;
2830
2831 return mwl8k_cmd_radio_control(hw, 1, 1);
2832}
2833
2834/*
2835 * CMD_RF_TX_POWER.
2836 */
2837#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2838
2839struct mwl8k_cmd_rf_tx_power {
2840 struct mwl8k_cmd_pkt_hdr header;
2841 __le16 action;
2842 __le16 support_level;
2843 __le16 current_level;
2844 __le16 reserved;
2845 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2846} __packed;
2847
2848static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2849{
2850 struct mwl8k_cmd_rf_tx_power *cmd;
2851 int rc;
2852
2853 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2854 if (cmd == NULL)
2855 return -ENOMEM;
2856
2857 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2858 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2859 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2860 cmd->support_level = cpu_to_le16(dBm);
2861
2862 rc = mwl8k_post_cmd(hw, &cmd->header);
2863 kfree(cmd);
2864
2865 return rc;
2866}
2867
2868/*
2869 * CMD_TX_POWER.
2870 */
2871#define MWL8K_TX_POWER_LEVEL_TOTAL 12
2872
2873struct mwl8k_cmd_tx_power {
2874 struct mwl8k_cmd_pkt_hdr header;
2875 __le16 action;
2876 __le16 band;
2877 __le16 channel;
2878 __le16 bw;
2879 __le16 sub_ch;
2880 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2881} __packed;
2882
2883static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2884 struct ieee80211_conf *conf,
2885 unsigned short pwr)
2886{
2887 struct ieee80211_channel *channel = conf->chandef.chan;
2888 enum nl80211_channel_type channel_type =
2889 cfg80211_get_chandef_type(&conf->chandef);
2890 struct mwl8k_cmd_tx_power *cmd;
2891 int rc;
2892 int i;
2893
2894 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2895 if (cmd == NULL)
2896 return -ENOMEM;
2897
2898 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2899 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2900 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2901
2902 if (channel->band == NL80211_BAND_2GHZ)
2903 cmd->band = cpu_to_le16(0x1);
2904 else if (channel->band == NL80211_BAND_5GHZ)
2905 cmd->band = cpu_to_le16(0x4);
2906
2907 cmd->channel = cpu_to_le16(channel->hw_value);
2908
2909 if (channel_type == NL80211_CHAN_NO_HT ||
2910 channel_type == NL80211_CHAN_HT20) {
2911 cmd->bw = cpu_to_le16(0x2);
2912 } else {
2913 cmd->bw = cpu_to_le16(0x4);
2914 if (channel_type == NL80211_CHAN_HT40MINUS)
2915 cmd->sub_ch = cpu_to_le16(0x3);
2916 else if (channel_type == NL80211_CHAN_HT40PLUS)
2917 cmd->sub_ch = cpu_to_le16(0x1);
2918 }
2919
2920 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2921 cmd->power_level_list[i] = cpu_to_le16(pwr);
2922
2923 rc = mwl8k_post_cmd(hw, &cmd->header);
2924 kfree(cmd);
2925
2926 return rc;
2927}
2928
2929/*
2930 * CMD_RF_ANTENNA.
2931 */
2932struct mwl8k_cmd_rf_antenna {
2933 struct mwl8k_cmd_pkt_hdr header;
2934 __le16 antenna;
2935 __le16 mode;
2936} __packed;
2937
2938#define MWL8K_RF_ANTENNA_RX 1
2939#define MWL8K_RF_ANTENNA_TX 2
2940
2941static int
2942mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2943{
2944 struct mwl8k_cmd_rf_antenna *cmd;
2945 int rc;
2946
2947 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2948 if (cmd == NULL)
2949 return -ENOMEM;
2950
2951 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2952 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2953 cmd->antenna = cpu_to_le16(antenna);
2954 cmd->mode = cpu_to_le16(mask);
2955
2956 rc = mwl8k_post_cmd(hw, &cmd->header);
2957 kfree(cmd);
2958
2959 return rc;
2960}
2961
2962/*
2963 * CMD_SET_BEACON.
2964 */
2965struct mwl8k_cmd_set_beacon {
2966 struct mwl8k_cmd_pkt_hdr header;
2967 __le16 beacon_len;
2968 __u8 beacon[];
2969};
2970
2971static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2972 struct ieee80211_vif *vif, u8 *beacon, int len)
2973{
2974 struct mwl8k_cmd_set_beacon *cmd;
2975 int rc;
2976
2977 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2978 if (cmd == NULL)
2979 return -ENOMEM;
2980
2981 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2982 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2983 cmd->beacon_len = cpu_to_le16(len);
2984 memcpy(cmd->beacon, beacon, len);
2985
2986 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2987 kfree(cmd);
2988
2989 return rc;
2990}
2991
2992/*
2993 * CMD_SET_PRE_SCAN.
2994 */
2995struct mwl8k_cmd_set_pre_scan {
2996 struct mwl8k_cmd_pkt_hdr header;
2997} __packed;
2998
2999static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
3000{
3001 struct mwl8k_cmd_set_pre_scan *cmd;
3002 int rc;
3003
3004 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3005 if (cmd == NULL)
3006 return -ENOMEM;
3007
3008 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
3009 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3010
3011 rc = mwl8k_post_cmd(hw, &cmd->header);
3012 kfree(cmd);
3013
3014 return rc;
3015}
3016
3017/*
3018 * CMD_BBP_REG_ACCESS.
3019 */
3020struct mwl8k_cmd_bbp_reg_access {
3021 struct mwl8k_cmd_pkt_hdr header;
3022 __le16 action;
3023 __le16 offset;
3024 u8 value;
3025 u8 rsrv[3];
3026} __packed;
3027
3028static int
3029mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
3030 u16 action,
3031 u16 offset,
3032 u8 *value)
3033{
3034 struct mwl8k_cmd_bbp_reg_access *cmd;
3035 int rc;
3036
3037 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3038 if (cmd == NULL)
3039 return -ENOMEM;
3040
3041 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
3042 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3043 cmd->action = cpu_to_le16(action);
3044 cmd->offset = cpu_to_le16(offset);
3045
3046 rc = mwl8k_post_cmd(hw, &cmd->header);
3047
3048 if (!rc)
3049 *value = cmd->value;
3050 else
3051 *value = 0;
3052
3053 kfree(cmd);
3054
3055 return rc;
3056}
3057
3058/*
3059 * CMD_SET_POST_SCAN.
3060 */
3061struct mwl8k_cmd_set_post_scan {
3062 struct mwl8k_cmd_pkt_hdr header;
3063 __le32 isibss;
3064 __u8 bssid[ETH_ALEN];
3065} __packed;
3066
3067static int
3068mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
3069{
3070 struct mwl8k_cmd_set_post_scan *cmd;
3071 int rc;
3072
3073 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3074 if (cmd == NULL)
3075 return -ENOMEM;
3076
3077 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3078 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3079 cmd->isibss = 0;
3080 memcpy(cmd->bssid, mac, ETH_ALEN);
3081
3082 rc = mwl8k_post_cmd(hw, &cmd->header);
3083 kfree(cmd);
3084
3085 return rc;
3086}
3087
3088static int freq_to_idx(struct mwl8k_priv *priv, int freq)
3089{
3090 struct ieee80211_supported_band *sband;
3091 int band, ch, idx = 0;
3092
3093 for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
3094 sband = priv->hw->wiphy->bands[band];
3095 if (!sband)
3096 continue;
3097
3098 for (ch = 0; ch < sband->n_channels; ch++, idx++)
3099 if (sband->channels[ch].center_freq == freq)
3100 goto exit;
3101 }
3102
3103exit:
3104 return idx;
3105}
3106
3107static void mwl8k_update_survey(struct mwl8k_priv *priv,
3108 struct ieee80211_channel *channel)
3109{
3110 u32 cca_cnt, rx_rdy;
3111 s8 nf = 0, idx;
3112 struct survey_info *survey;
3113
3114 idx = freq_to_idx(priv, priv->acs_chan->center_freq);
3115 if (idx >= MWL8K_NUM_CHANS) {
3116 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
3117 return;
3118 }
3119
3120 survey = &priv->survey[idx];
3121
3122 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
3123 cca_cnt /= 1000; /* uSecs to mSecs */
3124 survey->time_busy = (u64) cca_cnt;
3125
3126 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
3127 rx_rdy /= 1000; /* uSecs to mSecs */
3128 survey->time_rx = (u64) rx_rdy;
3129
3130 priv->channel_time = jiffies - priv->channel_time;
3131 survey->time = jiffies_to_msecs(priv->channel_time);
3132
3133 survey->channel = channel;
3134
3135 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
3136
3137 /* Make sure sign is negative else ACS at hostapd fails */
3138 survey->noise = nf * -1;
3139
3140 survey->filled = SURVEY_INFO_NOISE_DBM |
3141 SURVEY_INFO_TIME |
3142 SURVEY_INFO_TIME_BUSY |
3143 SURVEY_INFO_TIME_RX;
3144}
3145
3146/*
3147 * CMD_SET_RF_CHANNEL.
3148 */
3149struct mwl8k_cmd_set_rf_channel {
3150 struct mwl8k_cmd_pkt_hdr header;
3151 __le16 action;
3152 __u8 current_channel;
3153 __le32 channel_flags;
3154} __packed;
3155
3156static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3157 struct ieee80211_conf *conf)
3158{
3159 struct ieee80211_channel *channel = conf->chandef.chan;
3160 enum nl80211_channel_type channel_type =
3161 cfg80211_get_chandef_type(&conf->chandef);
3162 struct mwl8k_cmd_set_rf_channel *cmd;
3163 struct mwl8k_priv *priv = hw->priv;
3164 int rc;
3165
3166 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3167 if (cmd == NULL)
3168 return -ENOMEM;
3169
3170 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3171 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3172 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3173 cmd->current_channel = channel->hw_value;
3174
3175 if (channel->band == NL80211_BAND_2GHZ)
3176 cmd->channel_flags |= cpu_to_le32(0x00000001);
3177 else if (channel->band == NL80211_BAND_5GHZ)
3178 cmd->channel_flags |= cpu_to_le32(0x00000004);
3179
3180 if (!priv->sw_scan_start) {
3181 if (channel_type == NL80211_CHAN_NO_HT ||
3182 channel_type == NL80211_CHAN_HT20)
3183 cmd->channel_flags |= cpu_to_le32(0x00000080);
3184 else if (channel_type == NL80211_CHAN_HT40MINUS)
3185 cmd->channel_flags |= cpu_to_le32(0x000001900);
3186 else if (channel_type == NL80211_CHAN_HT40PLUS)
3187 cmd->channel_flags |= cpu_to_le32(0x000000900);
3188 } else {
3189 cmd->channel_flags |= cpu_to_le32(0x00000080);
3190 }
3191
3192 if (priv->sw_scan_start) {
3193 /* Store current channel stats
3194 * before switching to newer one.
3195 * This will be processed only for AP fw.
3196 */
3197 if (priv->channel_time != 0)
3198 mwl8k_update_survey(priv, priv->acs_chan);
3199
3200 priv->channel_time = jiffies;
3201 priv->acs_chan = channel;
3202 }
3203
3204 rc = mwl8k_post_cmd(hw, &cmd->header);
3205 kfree(cmd);
3206
3207 return rc;
3208}
3209
3210/*
3211 * CMD_SET_AID.
3212 */
3213#define MWL8K_FRAME_PROT_DISABLED 0x00
3214#define MWL8K_FRAME_PROT_11G 0x07
3215#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
3216#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
3217
3218struct mwl8k_cmd_update_set_aid {
3219 struct mwl8k_cmd_pkt_hdr header;
3220 __le16 aid;
3221
3222 /* AP's MAC address (BSSID) */
3223 __u8 bssid[ETH_ALEN];
3224 __le16 protection_mode;
3225 __u8 supp_rates[14];
3226} __packed;
3227
3228static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3229{
3230 int i;
3231 int j;
3232
3233 /*
3234 * Clear nonstandard rate 4.
3235 */
3236 mask &= 0x1fef;
3237
3238 for (i = 0, j = 0; i < 13; i++) {
3239 if (mask & (1 << i))
3240 rates[j++] = mwl8k_rates_24[i].hw_value;
3241 }
3242}
3243
3244static int
3245mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3246 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3247{
3248 struct mwl8k_cmd_update_set_aid *cmd;
3249 u16 prot_mode;
3250 int rc;
3251
3252 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3253 if (cmd == NULL)
3254 return -ENOMEM;
3255
3256 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3257 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3258 cmd->aid = cpu_to_le16(vif->cfg.aid);
3259 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3260
3261 if (vif->bss_conf.use_cts_prot) {
3262 prot_mode = MWL8K_FRAME_PROT_11G;
3263 } else {
3264 switch (vif->bss_conf.ht_operation_mode &
3265 IEEE80211_HT_OP_MODE_PROTECTION) {
3266 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3267 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3268 break;
3269 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3270 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3271 break;
3272 default:
3273 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3274 break;
3275 }
3276 }
3277 cmd->protection_mode = cpu_to_le16(prot_mode);
3278
3279 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3280
3281 rc = mwl8k_post_cmd(hw, &cmd->header);
3282 kfree(cmd);
3283
3284 return rc;
3285}
3286
3287/*
3288 * CMD_SET_RATE.
3289 */
3290struct mwl8k_cmd_set_rate {
3291 struct mwl8k_cmd_pkt_hdr header;
3292 __u8 legacy_rates[14];
3293
3294 /* Bitmap for supported MCS codes. */
3295 __u8 mcs_set[16];
3296 __u8 reserved[16];
3297} __packed;
3298
3299static int
3300mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3301 u32 legacy_rate_mask, u8 *mcs_rates)
3302{
3303 struct mwl8k_cmd_set_rate *cmd;
3304 int rc;
3305
3306 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3307 if (cmd == NULL)
3308 return -ENOMEM;
3309
3310 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3311 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3312 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3313 memcpy(cmd->mcs_set, mcs_rates, 16);
3314
3315 rc = mwl8k_post_cmd(hw, &cmd->header);
3316 kfree(cmd);
3317
3318 return rc;
3319}
3320
3321/*
3322 * CMD_FINALIZE_JOIN.
3323 */
3324#define MWL8K_FJ_BEACON_MAXLEN 128
3325
3326struct mwl8k_cmd_finalize_join {
3327 struct mwl8k_cmd_pkt_hdr header;
3328 __le32 sleep_interval; /* Number of beacon periods to sleep */
3329 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3330} __packed;
3331
3332static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3333 int framelen, int dtim)
3334{
3335 struct mwl8k_cmd_finalize_join *cmd;
3336 struct ieee80211_mgmt *payload = frame;
3337 int payload_len;
3338 int rc;
3339
3340 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3341 if (cmd == NULL)
3342 return -ENOMEM;
3343
3344 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3345 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3346 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3347
3348 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3349 if (payload_len < 0)
3350 payload_len = 0;
3351 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3352 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3353
3354 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3355
3356 rc = mwl8k_post_cmd(hw, &cmd->header);
3357 kfree(cmd);
3358
3359 return rc;
3360}
3361
3362/*
3363 * CMD_SET_RTS_THRESHOLD.
3364 */
3365struct mwl8k_cmd_set_rts_threshold {
3366 struct mwl8k_cmd_pkt_hdr header;
3367 __le16 action;
3368 __le16 threshold;
3369} __packed;
3370
3371static int
3372mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3373{
3374 struct mwl8k_cmd_set_rts_threshold *cmd;
3375 int rc;
3376
3377 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3378 if (cmd == NULL)
3379 return -ENOMEM;
3380
3381 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3382 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3383 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3384 cmd->threshold = cpu_to_le16(rts_thresh);
3385
3386 rc = mwl8k_post_cmd(hw, &cmd->header);
3387 kfree(cmd);
3388
3389 return rc;
3390}
3391
3392/*
3393 * CMD_SET_SLOT.
3394 */
3395struct mwl8k_cmd_set_slot {
3396 struct mwl8k_cmd_pkt_hdr header;
3397 __le16 action;
3398 __u8 short_slot;
3399} __packed;
3400
3401static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3402{
3403 struct mwl8k_cmd_set_slot *cmd;
3404 int rc;
3405
3406 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3407 if (cmd == NULL)
3408 return -ENOMEM;
3409
3410 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3411 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3412 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3413 cmd->short_slot = short_slot_time;
3414
3415 rc = mwl8k_post_cmd(hw, &cmd->header);
3416 kfree(cmd);
3417
3418 return rc;
3419}
3420
3421/*
3422 * CMD_SET_EDCA_PARAMS.
3423 */
3424struct mwl8k_cmd_set_edca_params {
3425 struct mwl8k_cmd_pkt_hdr header;
3426
3427 /* See MWL8K_SET_EDCA_XXX below */
3428 __le16 action;
3429
3430 /* TX opportunity in units of 32 us */
3431 __le16 txop;
3432
3433 union {
3434 struct {
3435 /* Log exponent of max contention period: 0...15 */
3436 __le32 log_cw_max;
3437
3438 /* Log exponent of min contention period: 0...15 */
3439 __le32 log_cw_min;
3440
3441 /* Adaptive interframe spacing in units of 32us */
3442 __u8 aifs;
3443
3444 /* TX queue to configure */
3445 __u8 txq;
3446 } ap;
3447 struct {
3448 /* Log exponent of max contention period: 0...15 */
3449 __u8 log_cw_max;
3450
3451 /* Log exponent of min contention period: 0...15 */
3452 __u8 log_cw_min;
3453
3454 /* Adaptive interframe spacing in units of 32us */
3455 __u8 aifs;
3456
3457 /* TX queue to configure */
3458 __u8 txq;
3459 } sta;
3460 };
3461} __packed;
3462
3463#define MWL8K_SET_EDCA_CW 0x01
3464#define MWL8K_SET_EDCA_TXOP 0x02
3465#define MWL8K_SET_EDCA_AIFS 0x04
3466
3467#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3468 MWL8K_SET_EDCA_TXOP | \
3469 MWL8K_SET_EDCA_AIFS)
3470
3471static int
3472mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3473 __u16 cw_min, __u16 cw_max,
3474 __u8 aifs, __u16 txop)
3475{
3476 struct mwl8k_priv *priv = hw->priv;
3477 struct mwl8k_cmd_set_edca_params *cmd;
3478 int rc;
3479
3480 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3481 if (cmd == NULL)
3482 return -ENOMEM;
3483
3484 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3485 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3486 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3487 cmd->txop = cpu_to_le16(txop);
3488 if (priv->ap_fw) {
3489 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3490 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3491 cmd->ap.aifs = aifs;
3492 cmd->ap.txq = qnum;
3493 } else {
3494 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3495 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3496 cmd->sta.aifs = aifs;
3497 cmd->sta.txq = qnum;
3498 }
3499
3500 rc = mwl8k_post_cmd(hw, &cmd->header);
3501 kfree(cmd);
3502
3503 return rc;
3504}
3505
3506/*
3507 * CMD_SET_WMM_MODE.
3508 */
3509struct mwl8k_cmd_set_wmm_mode {
3510 struct mwl8k_cmd_pkt_hdr header;
3511 __le16 action;
3512} __packed;
3513
3514static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3515{
3516 struct mwl8k_priv *priv = hw->priv;
3517 struct mwl8k_cmd_set_wmm_mode *cmd;
3518 int rc;
3519
3520 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3521 if (cmd == NULL)
3522 return -ENOMEM;
3523
3524 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3525 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3526 cmd->action = cpu_to_le16(!!enable);
3527
3528 rc = mwl8k_post_cmd(hw, &cmd->header);
3529 kfree(cmd);
3530
3531 if (!rc)
3532 priv->wmm_enabled = enable;
3533
3534 return rc;
3535}
3536
3537/*
3538 * CMD_MIMO_CONFIG.
3539 */
3540struct mwl8k_cmd_mimo_config {
3541 struct mwl8k_cmd_pkt_hdr header;
3542 __le32 action;
3543 __u8 rx_antenna_map;
3544 __u8 tx_antenna_map;
3545} __packed;
3546
3547static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3548{
3549 struct mwl8k_cmd_mimo_config *cmd;
3550 int rc;
3551
3552 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3553 if (cmd == NULL)
3554 return -ENOMEM;
3555
3556 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3557 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3558 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3559 cmd->rx_antenna_map = rx;
3560 cmd->tx_antenna_map = tx;
3561
3562 rc = mwl8k_post_cmd(hw, &cmd->header);
3563 kfree(cmd);
3564
3565 return rc;
3566}
3567
3568/*
3569 * CMD_USE_FIXED_RATE (STA version).
3570 */
3571struct mwl8k_cmd_use_fixed_rate_sta {
3572 struct mwl8k_cmd_pkt_hdr header;
3573 __le32 action;
3574 __le32 allow_rate_drop;
3575 __le32 num_rates;
3576 struct {
3577 __le32 is_ht_rate;
3578 __le32 enable_retry;
3579 __le32 rate;
3580 __le32 retry_count;
3581 } rate_entry[8];
3582 __le32 rate_type;
3583 __le32 reserved1;
3584 __le32 reserved2;
3585} __packed;
3586
3587#define MWL8K_USE_AUTO_RATE 0x0002
3588#define MWL8K_UCAST_RATE 0
3589
3590static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3591{
3592 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3593 int rc;
3594
3595 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3596 if (cmd == NULL)
3597 return -ENOMEM;
3598
3599 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3600 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3601 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3602 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3603
3604 rc = mwl8k_post_cmd(hw, &cmd->header);
3605 kfree(cmd);
3606
3607 return rc;
3608}
3609
3610/*
3611 * CMD_USE_FIXED_RATE (AP version).
3612 */
3613struct mwl8k_cmd_use_fixed_rate_ap {
3614 struct mwl8k_cmd_pkt_hdr header;
3615 __le32 action;
3616 __le32 allow_rate_drop;
3617 __le32 num_rates;
3618 struct mwl8k_rate_entry_ap {
3619 __le32 is_ht_rate;
3620 __le32 enable_retry;
3621 __le32 rate;
3622 __le32 retry_count;
3623 } rate_entry[4];
3624 u8 multicast_rate;
3625 u8 multicast_rate_type;
3626 u8 management_rate;
3627} __packed;
3628
3629static int
3630mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3631{
3632 struct mwl8k_cmd_use_fixed_rate_ap *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_USE_FIXED_RATE);
3640 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3641 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3642 cmd->multicast_rate = mcast;
3643 cmd->management_rate = mgmt;
3644
3645 rc = mwl8k_post_cmd(hw, &cmd->header);
3646 kfree(cmd);
3647
3648 return rc;
3649}
3650
3651/*
3652 * CMD_ENABLE_SNIFFER.
3653 */
3654struct mwl8k_cmd_enable_sniffer {
3655 struct mwl8k_cmd_pkt_hdr header;
3656 __le32 action;
3657} __packed;
3658
3659static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3660{
3661 struct mwl8k_cmd_enable_sniffer *cmd;
3662 int rc;
3663
3664 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3665 if (cmd == NULL)
3666 return -ENOMEM;
3667
3668 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3669 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3670 cmd->action = cpu_to_le32(!!enable);
3671
3672 rc = mwl8k_post_cmd(hw, &cmd->header);
3673 kfree(cmd);
3674
3675 return rc;
3676}
3677
3678struct mwl8k_cmd_update_mac_addr {
3679 struct mwl8k_cmd_pkt_hdr header;
3680 union {
3681 struct {
3682 __le16 mac_type;
3683 __u8 mac_addr[ETH_ALEN];
3684 } mbss;
3685 __u8 mac_addr[ETH_ALEN];
3686 };
3687} __packed;
3688
3689#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3690#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3691#define MWL8K_MAC_TYPE_PRIMARY_AP 2
3692#define MWL8K_MAC_TYPE_SECONDARY_AP 3
3693
3694static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3695 struct ieee80211_vif *vif, u8 *mac, bool set)
3696{
3697 struct mwl8k_priv *priv = hw->priv;
3698 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3699 struct mwl8k_cmd_update_mac_addr *cmd;
3700 int mac_type;
3701 int rc;
3702
3703 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3704 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3705 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3706 if (priv->ap_fw)
3707 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3708 else
3709 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3710 else
3711 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3712 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3713 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3714 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3715 else
3716 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3717 }
3718
3719 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3720 if (cmd == NULL)
3721 return -ENOMEM;
3722
3723 if (set)
3724 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3725 else
3726 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3727
3728 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3729 if (priv->ap_fw) {
3730 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3731 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3732 } else {
3733 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3734 }
3735
3736 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3737 kfree(cmd);
3738
3739 return rc;
3740}
3741
3742/*
3743 * MWL8K_CMD_SET_MAC_ADDR.
3744 */
3745static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3746 struct ieee80211_vif *vif, u8 *mac)
3747{
3748 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3749}
3750
3751/*
3752 * MWL8K_CMD_DEL_MAC_ADDR.
3753 */
3754static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3755 struct ieee80211_vif *vif, u8 *mac)
3756{
3757 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3758}
3759
3760/*
3761 * CMD_SET_RATEADAPT_MODE.
3762 */
3763struct mwl8k_cmd_set_rate_adapt_mode {
3764 struct mwl8k_cmd_pkt_hdr header;
3765 __le16 action;
3766 __le16 mode;
3767} __packed;
3768
3769static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3770{
3771 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3772 int rc;
3773
3774 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3775 if (cmd == NULL)
3776 return -ENOMEM;
3777
3778 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3779 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3780 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3781 cmd->mode = cpu_to_le16(mode);
3782
3783 rc = mwl8k_post_cmd(hw, &cmd->header);
3784 kfree(cmd);
3785
3786 return rc;
3787}
3788
3789/*
3790 * CMD_GET_WATCHDOG_BITMAP.
3791 */
3792struct mwl8k_cmd_get_watchdog_bitmap {
3793 struct mwl8k_cmd_pkt_hdr header;
3794 u8 bitmap;
3795} __packed;
3796
3797static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3798{
3799 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3800 int rc;
3801
3802 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3803 if (cmd == NULL)
3804 return -ENOMEM;
3805
3806 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3807 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3808
3809 rc = mwl8k_post_cmd(hw, &cmd->header);
3810 if (!rc)
3811 *bitmap = cmd->bitmap;
3812
3813 kfree(cmd);
3814
3815 return rc;
3816}
3817
3818#define MWL8K_WMM_QUEUE_NUMBER 3
3819
3820static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3821 u8 idx);
3822
3823static void mwl8k_watchdog_ba_events(struct work_struct *work)
3824{
3825 int rc;
3826 u8 bitmap = 0, stream_index;
3827 struct mwl8k_ampdu_stream *streams;
3828 struct mwl8k_priv *priv =
3829 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3830 struct ieee80211_hw *hw = priv->hw;
3831 int i;
3832 u32 status = 0;
3833
3834 mwl8k_fw_lock(hw);
3835
3836 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3837 if (rc)
3838 goto done;
3839
3840 spin_lock(&priv->stream_lock);
3841
3842 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3843 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3844 if (bitmap & (1 << i)) {
3845 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3846 TOTAL_HW_TX_QUEUES;
3847 streams = &priv->ampdu[stream_index];
3848 if (streams->state == AMPDU_STREAM_ACTIVE) {
3849 ieee80211_stop_tx_ba_session(streams->sta,
3850 streams->tid);
3851 spin_unlock(&priv->stream_lock);
3852 mwl8k_destroy_ba(hw, stream_index);
3853 spin_lock(&priv->stream_lock);
3854 }
3855 }
3856 }
3857
3858 spin_unlock(&priv->stream_lock);
3859done:
3860 atomic_dec(&priv->watchdog_event_pending);
3861 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3862 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3863 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3864 mwl8k_fw_unlock(hw);
3865 return;
3866}
3867
3868
3869/*
3870 * CMD_BSS_START.
3871 */
3872struct mwl8k_cmd_bss_start {
3873 struct mwl8k_cmd_pkt_hdr header;
3874 __le32 enable;
3875} __packed;
3876
3877static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3878 struct ieee80211_vif *vif, int enable)
3879{
3880 struct mwl8k_cmd_bss_start *cmd;
3881 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3882 struct mwl8k_priv *priv = hw->priv;
3883 int rc;
3884
3885 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3886 return 0;
3887
3888 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3889 return 0;
3890
3891 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3892 if (cmd == NULL)
3893 return -ENOMEM;
3894
3895 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3896 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3897 cmd->enable = cpu_to_le32(enable);
3898
3899 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3900 kfree(cmd);
3901
3902 if (!rc) {
3903 if (enable)
3904 priv->running_bsses |= (1 << mwl8k_vif->macid);
3905 else
3906 priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3907 }
3908 return rc;
3909}
3910
3911static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3912{
3913 struct mwl8k_priv *priv = hw->priv;
3914 struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3915 struct ieee80211_vif *vif;
3916
3917 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3918 vif = mwl8k_vif->vif;
3919
3920 if (!(bitmap & (1 << mwl8k_vif->macid)))
3921 continue;
3922
3923 if (vif->type == NL80211_IFTYPE_AP)
3924 mwl8k_cmd_bss_start(hw, vif, enable);
3925 }
3926}
3927/*
3928 * CMD_BASTREAM.
3929 */
3930
3931/*
3932 * UPSTREAM is tx direction
3933 */
3934#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3935#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3936
3937enum ba_stream_action_type {
3938 MWL8K_BA_CREATE,
3939 MWL8K_BA_UPDATE,
3940 MWL8K_BA_DESTROY,
3941 MWL8K_BA_FLUSH,
3942 MWL8K_BA_CHECK,
3943};
3944
3945
3946struct mwl8k_create_ba_stream {
3947 __le32 flags;
3948 __le32 idle_thrs;
3949 __le32 bar_thrs;
3950 __le32 window_size;
3951 u8 peer_mac_addr[6];
3952 u8 dialog_token;
3953 u8 tid;
3954 u8 queue_id;
3955 u8 param_info;
3956 __le32 ba_context;
3957 u8 reset_seq_no_flag;
3958 __le16 curr_seq_no;
3959 u8 sta_src_mac_addr[6];
3960} __packed;
3961
3962struct mwl8k_destroy_ba_stream {
3963 __le32 flags;
3964 __le32 ba_context;
3965} __packed;
3966
3967struct mwl8k_cmd_bastream {
3968 struct mwl8k_cmd_pkt_hdr header;
3969 __le32 action;
3970 union {
3971 struct mwl8k_create_ba_stream create_params;
3972 struct mwl8k_destroy_ba_stream destroy_params;
3973 };
3974} __packed;
3975
3976static int
3977mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3978 struct ieee80211_vif *vif)
3979{
3980 struct mwl8k_cmd_bastream *cmd;
3981 int rc;
3982
3983 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3984 if (cmd == NULL)
3985 return -ENOMEM;
3986
3987 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3988 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3989
3990 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3991
3992 cmd->create_params.queue_id = stream->idx;
3993 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3994 ETH_ALEN);
3995 cmd->create_params.tid = stream->tid;
3996
3997 cmd->create_params.flags =
3998 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3999 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
4000
4001 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4002
4003 kfree(cmd);
4004
4005 return rc;
4006}
4007
4008static int
4009mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
4010 u8 buf_size, struct ieee80211_vif *vif)
4011{
4012 struct mwl8k_cmd_bastream *cmd;
4013 int rc;
4014
4015 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4016 if (cmd == NULL)
4017 return -ENOMEM;
4018
4019
4020 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4021 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4022
4023 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
4024
4025 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
4026 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
4027 cmd->create_params.queue_id = stream->idx;
4028
4029 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
4030 cmd->create_params.tid = stream->tid;
4031 cmd->create_params.curr_seq_no = cpu_to_le16(0);
4032 cmd->create_params.reset_seq_no_flag = 1;
4033
4034 cmd->create_params.param_info =
4035 (stream->sta->deflink.ht_cap.ampdu_factor &
4036 IEEE80211_HT_AMPDU_PARM_FACTOR) |
4037 ((stream->sta->deflink.ht_cap.ampdu_density << 2) &
4038 IEEE80211_HT_AMPDU_PARM_DENSITY);
4039
4040 cmd->create_params.flags =
4041 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
4042 BASTREAM_FLAG_DIRECTION_UPSTREAM);
4043
4044 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4045
4046 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
4047 stream->sta->addr, stream->tid);
4048 kfree(cmd);
4049
4050 return rc;
4051}
4052
4053static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
4054 u8 idx)
4055{
4056 struct mwl8k_cmd_bastream *cmd;
4057
4058 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4059 if (cmd == NULL)
4060 return;
4061
4062 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4063 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4064 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
4065
4066 cmd->destroy_params.ba_context = cpu_to_le32(idx);
4067 mwl8k_post_cmd(hw, &cmd->header);
4068
4069 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
4070
4071 kfree(cmd);
4072}
4073
4074/*
4075 * CMD_SET_NEW_STN.
4076 */
4077struct mwl8k_cmd_set_new_stn {
4078 struct mwl8k_cmd_pkt_hdr header;
4079 __le16 aid;
4080 __u8 mac_addr[6];
4081 __le16 stn_id;
4082 __le16 action;
4083 __le16 rsvd;
4084 __le32 legacy_rates;
4085 __u8 ht_rates[4];
4086 __le16 cap_info;
4087 __le16 ht_capabilities_info;
4088 __u8 mac_ht_param_info;
4089 __u8 rev;
4090 __u8 control_channel;
4091 __u8 add_channel;
4092 __le16 op_mode;
4093 __le16 stbc;
4094 __u8 add_qos_info;
4095 __u8 is_qos_sta;
4096 __le32 fw_sta_ptr;
4097} __packed;
4098
4099#define MWL8K_STA_ACTION_ADD 0
4100#define MWL8K_STA_ACTION_REMOVE 2
4101
4102static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
4103 struct ieee80211_vif *vif,
4104 struct ieee80211_sta *sta)
4105{
4106 struct mwl8k_cmd_set_new_stn *cmd;
4107 u32 rates;
4108 int rc;
4109
4110 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4111 if (cmd == NULL)
4112 return -ENOMEM;
4113
4114 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4115 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4116 cmd->aid = cpu_to_le16(sta->aid);
4117 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
4118 cmd->stn_id = cpu_to_le16(sta->aid);
4119 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
4120 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4121 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];
4122 else
4123 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
4124 cmd->legacy_rates = cpu_to_le32(rates);
4125 if (sta->deflink.ht_cap.ht_supported) {
4126 cmd->ht_rates[0] = sta->deflink.ht_cap.mcs.rx_mask[0];
4127 cmd->ht_rates[1] = sta->deflink.ht_cap.mcs.rx_mask[1];
4128 cmd->ht_rates[2] = sta->deflink.ht_cap.mcs.rx_mask[2];
4129 cmd->ht_rates[3] = sta->deflink.ht_cap.mcs.rx_mask[3];
4130 cmd->ht_capabilities_info = cpu_to_le16(sta->deflink.ht_cap.cap);
4131 cmd->mac_ht_param_info = (sta->deflink.ht_cap.ampdu_factor & 3) |
4132 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);
4133 cmd->is_qos_sta = 1;
4134 }
4135
4136 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4137 kfree(cmd);
4138
4139 return rc;
4140}
4141
4142static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
4143 struct ieee80211_vif *vif)
4144{
4145 struct mwl8k_cmd_set_new_stn *cmd;
4146 int rc;
4147
4148 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4149 if (cmd == NULL)
4150 return -ENOMEM;
4151
4152 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4153 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4154 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4155
4156 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4157 kfree(cmd);
4158
4159 return rc;
4160}
4161
4162static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4163 struct ieee80211_vif *vif, u8 *addr)
4164{
4165 struct mwl8k_cmd_set_new_stn *cmd;
4166 struct mwl8k_priv *priv = hw->priv;
4167 int rc, i;
4168 u8 idx;
4169
4170 spin_lock(&priv->stream_lock);
4171 /* Destroy any active ampdu streams for this sta */
4172 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4173 struct mwl8k_ampdu_stream *s;
4174 s = &priv->ampdu[i];
4175 if (s->state != AMPDU_NO_STREAM) {
4176 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4177 if (s->state == AMPDU_STREAM_ACTIVE) {
4178 idx = s->idx;
4179 spin_unlock(&priv->stream_lock);
4180 mwl8k_destroy_ba(hw, idx);
4181 spin_lock(&priv->stream_lock);
4182 } else if (s->state == AMPDU_STREAM_NEW) {
4183 mwl8k_remove_stream(hw, s);
4184 }
4185 }
4186 }
4187 }
4188
4189 spin_unlock(&priv->stream_lock);
4190
4191 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4192 if (cmd == NULL)
4193 return -ENOMEM;
4194
4195 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4196 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4197 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4198 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4199
4200 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4201 kfree(cmd);
4202
4203 return rc;
4204}
4205
4206/*
4207 * CMD_UPDATE_ENCRYPTION.
4208 */
4209
4210#define MAX_ENCR_KEY_LENGTH 16
4211#define MIC_KEY_LENGTH 8
4212
4213struct mwl8k_cmd_update_encryption {
4214 struct mwl8k_cmd_pkt_hdr header;
4215
4216 __le32 action;
4217 __le32 reserved;
4218 __u8 mac_addr[6];
4219 __u8 encr_type;
4220
4221} __packed;
4222
4223struct mwl8k_cmd_set_key {
4224 struct mwl8k_cmd_pkt_hdr header;
4225
4226 __le32 action;
4227 __le32 reserved;
4228 __le16 length;
4229 __le16 key_type_id;
4230 __le32 key_info;
4231 __le32 key_id;
4232 __le16 key_len;
4233 struct {
4234 __u8 key_material[MAX_ENCR_KEY_LENGTH];
4235 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4236 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4237 } tkip;
4238 __le16 tkip_rsc_low;
4239 __le32 tkip_rsc_high;
4240 __le16 tkip_tsc_low;
4241 __le32 tkip_tsc_high;
4242 __u8 mac_addr[6];
4243} __packed;
4244
4245enum {
4246 MWL8K_ENCR_ENABLE,
4247 MWL8K_ENCR_SET_KEY,
4248 MWL8K_ENCR_REMOVE_KEY,
4249 MWL8K_ENCR_SET_GROUP_KEY,
4250};
4251
4252#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
4253#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
4254#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
4255#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
4256#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
4257
4258enum {
4259 MWL8K_ALG_WEP,
4260 MWL8K_ALG_TKIP,
4261 MWL8K_ALG_CCMP,
4262};
4263
4264#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
4265#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
4266#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
4267#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
4268#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
4269
4270static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4271 struct ieee80211_vif *vif,
4272 u8 *addr,
4273 u8 encr_type)
4274{
4275 struct mwl8k_cmd_update_encryption *cmd;
4276 int rc;
4277
4278 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4279 if (cmd == NULL)
4280 return -ENOMEM;
4281
4282 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4283 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4284 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4285 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4286 cmd->encr_type = encr_type;
4287
4288 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4289 kfree(cmd);
4290
4291 return rc;
4292}
4293
4294static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4295 u8 *addr,
4296 struct ieee80211_key_conf *key)
4297{
4298 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4299 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4300 cmd->length = cpu_to_le16(sizeof(*cmd) -
4301 offsetof(struct mwl8k_cmd_set_key, length));
4302 cmd->key_id = cpu_to_le32(key->keyidx);
4303 cmd->key_len = cpu_to_le16(key->keylen);
4304 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4305
4306 switch (key->cipher) {
4307 case WLAN_CIPHER_SUITE_WEP40:
4308 case WLAN_CIPHER_SUITE_WEP104:
4309 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4310 if (key->keyidx == 0)
4311 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4312
4313 break;
4314 case WLAN_CIPHER_SUITE_TKIP:
4315 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4316 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4317 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4318 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4319 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4320 | MWL8K_KEY_FLAG_TSC_VALID);
4321 break;
4322 case WLAN_CIPHER_SUITE_CCMP:
4323 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4324 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4325 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4326 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4327 break;
4328 default:
4329 return -ENOTSUPP;
4330 }
4331
4332 return 0;
4333}
4334
4335static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4336 struct ieee80211_vif *vif,
4337 u8 *addr,
4338 struct ieee80211_key_conf *key)
4339{
4340 struct mwl8k_cmd_set_key *cmd;
4341 int rc;
4342 int keymlen;
4343 u32 action;
4344 u8 idx;
4345 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4346
4347 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4348 if (cmd == NULL)
4349 return -ENOMEM;
4350
4351 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4352 if (rc < 0)
4353 goto done;
4354
4355 idx = key->keyidx;
4356
4357 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4358 action = MWL8K_ENCR_SET_KEY;
4359 else
4360 action = MWL8K_ENCR_SET_GROUP_KEY;
4361
4362 switch (key->cipher) {
4363 case WLAN_CIPHER_SUITE_WEP40:
4364 case WLAN_CIPHER_SUITE_WEP104:
4365 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4366 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4367 sizeof(*key) + key->keylen);
4368 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4369 }
4370
4371 keymlen = key->keylen;
4372 action = MWL8K_ENCR_SET_KEY;
4373 break;
4374 case WLAN_CIPHER_SUITE_TKIP:
4375 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4376 break;
4377 case WLAN_CIPHER_SUITE_CCMP:
4378 keymlen = key->keylen;
4379 break;
4380 default:
4381 rc = -ENOTSUPP;
4382 goto done;
4383 }
4384
4385 memcpy(&cmd->tkip, key->key, keymlen);
4386 cmd->action = cpu_to_le32(action);
4387
4388 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4389done:
4390 kfree(cmd);
4391
4392 return rc;
4393}
4394
4395static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4396 struct ieee80211_vif *vif,
4397 u8 *addr,
4398 struct ieee80211_key_conf *key)
4399{
4400 struct mwl8k_cmd_set_key *cmd;
4401 int rc;
4402 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4403
4404 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4405 if (cmd == NULL)
4406 return -ENOMEM;
4407
4408 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4409 if (rc < 0)
4410 goto done;
4411
4412 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4413 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4414 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4415
4416 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4417
4418 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4419done:
4420 kfree(cmd);
4421
4422 return rc;
4423}
4424
4425static int mwl8k_set_key(struct ieee80211_hw *hw,
4426 enum set_key_cmd cmd_param,
4427 struct ieee80211_vif *vif,
4428 struct ieee80211_sta *sta,
4429 struct ieee80211_key_conf *key)
4430{
4431 int rc = 0;
4432 u8 encr_type;
4433 u8 *addr;
4434 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4435 struct mwl8k_priv *priv = hw->priv;
4436
4437 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4438 return -EOPNOTSUPP;
4439
4440 if (sta == NULL)
4441 addr = vif->addr;
4442 else
4443 addr = sta->addr;
4444
4445 if (cmd_param == SET_KEY) {
4446 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4447 if (rc)
4448 goto out;
4449
4450 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4451 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4452 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4453 else
4454 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4455
4456 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4457 encr_type);
4458 if (rc)
4459 goto out;
4460
4461 mwl8k_vif->is_hw_crypto_enabled = true;
4462
4463 } else {
4464 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4465
4466 if (rc)
4467 goto out;
4468 }
4469out:
4470 return rc;
4471}
4472
4473/*
4474 * CMD_UPDATE_STADB.
4475 */
4476struct ewc_ht_info {
4477 __le16 control1;
4478 __le16 control2;
4479 __le16 control3;
4480} __packed;
4481
4482struct peer_capability_info {
4483 /* Peer type - AP vs. STA. */
4484 __u8 peer_type;
4485
4486 /* Basic 802.11 capabilities from assoc resp. */
4487 __le16 basic_caps;
4488
4489 /* Set if peer supports 802.11n high throughput (HT). */
4490 __u8 ht_support;
4491
4492 /* Valid if HT is supported. */
4493 __le16 ht_caps;
4494 __u8 extended_ht_caps;
4495 struct ewc_ht_info ewc_info;
4496
4497 /* Legacy rate table. Intersection of our rates and peer rates. */
4498 __u8 legacy_rates[12];
4499
4500 /* HT rate table. Intersection of our rates and peer rates. */
4501 __u8 ht_rates[16];
4502 __u8 pad[16];
4503
4504 /* If set, interoperability mode, no proprietary extensions. */
4505 __u8 interop;
4506 __u8 pad2;
4507 __u8 station_id;
4508 __le16 amsdu_enabled;
4509} __packed;
4510
4511struct mwl8k_cmd_update_stadb {
4512 struct mwl8k_cmd_pkt_hdr header;
4513
4514 /* See STADB_ACTION_TYPE */
4515 __le32 action;
4516
4517 /* Peer MAC address */
4518 __u8 peer_addr[ETH_ALEN];
4519
4520 __le32 reserved;
4521
4522 /* Peer info - valid during add/update. */
4523 struct peer_capability_info peer_info;
4524} __packed;
4525
4526#define MWL8K_STA_DB_MODIFY_ENTRY 1
4527#define MWL8K_STA_DB_DEL_ENTRY 2
4528
4529/* Peer Entry flags - used to define the type of the peer node */
4530#define MWL8K_PEER_TYPE_ACCESSPOINT 2
4531
4532static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4533 struct ieee80211_vif *vif,
4534 struct ieee80211_sta *sta)
4535{
4536 struct mwl8k_cmd_update_stadb *cmd;
4537 struct peer_capability_info *p;
4538 u32 rates;
4539 int rc;
4540
4541 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4542 if (cmd == NULL)
4543 return -ENOMEM;
4544
4545 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4546 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4547 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4548 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4549
4550 p = &cmd->peer_info;
4551 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4552 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4553 p->ht_support = sta->deflink.ht_cap.ht_supported;
4554 p->ht_caps = cpu_to_le16(sta->deflink.ht_cap.cap);
4555 p->extended_ht_caps = (sta->deflink.ht_cap.ampdu_factor & 3) |
4556 ((sta->deflink.ht_cap.ampdu_density & 7) << 2);
4557 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
4558 rates = sta->deflink.supp_rates[NL80211_BAND_2GHZ];
4559 else
4560 rates = sta->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
4561 legacy_rate_mask_to_array(p->legacy_rates, rates);
4562 memcpy(p->ht_rates, &sta->deflink.ht_cap.mcs, 16);
4563 p->interop = 1;
4564 p->amsdu_enabled = 0;
4565
4566 rc = mwl8k_post_cmd(hw, &cmd->header);
4567 if (!rc)
4568 rc = p->station_id;
4569 kfree(cmd);
4570
4571 return rc;
4572}
4573
4574static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4575 struct ieee80211_vif *vif, u8 *addr)
4576{
4577 struct mwl8k_cmd_update_stadb *cmd;
4578 int rc;
4579
4580 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4581 if (cmd == NULL)
4582 return -ENOMEM;
4583
4584 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4585 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4586 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4587 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4588
4589 rc = mwl8k_post_cmd(hw, &cmd->header);
4590 kfree(cmd);
4591
4592 return rc;
4593}
4594
4595
4596/*
4597 * Interrupt handling.
4598 */
4599static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4600{
4601 struct ieee80211_hw *hw = dev_id;
4602 struct mwl8k_priv *priv = hw->priv;
4603 u32 status;
4604
4605 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4606 if (!status)
4607 return IRQ_NONE;
4608
4609 if (status & MWL8K_A2H_INT_TX_DONE) {
4610 status &= ~MWL8K_A2H_INT_TX_DONE;
4611 tasklet_schedule(&priv->poll_tx_task);
4612 }
4613
4614 if (status & MWL8K_A2H_INT_RX_READY) {
4615 status &= ~MWL8K_A2H_INT_RX_READY;
4616 tasklet_schedule(&priv->poll_rx_task);
4617 }
4618
4619 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4620 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4621 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4622
4623 atomic_inc(&priv->watchdog_event_pending);
4624 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4625 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4626 }
4627
4628 if (status)
4629 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4630
4631 if (status & MWL8K_A2H_INT_OPC_DONE) {
4632 if (priv->hostcmd_wait != NULL)
4633 complete(priv->hostcmd_wait);
4634 }
4635
4636 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4637 if (!mutex_is_locked(&priv->fw_mutex) &&
4638 priv->radio_on && priv->pending_tx_pkts)
4639 mwl8k_tx_start(priv);
4640 }
4641
4642 return IRQ_HANDLED;
4643}
4644
4645static void mwl8k_tx_poll(struct tasklet_struct *t)
4646{
4647 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_tx_task);
4648 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4649 int limit;
4650 int i;
4651
4652 limit = 32;
4653
4654 spin_lock(&priv->tx_lock);
4655
4656 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4657 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4658
4659 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4660 complete(priv->tx_wait);
4661 priv->tx_wait = NULL;
4662 }
4663
4664 spin_unlock(&priv->tx_lock);
4665
4666 if (limit) {
4667 writel(~MWL8K_A2H_INT_TX_DONE,
4668 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4669 } else {
4670 tasklet_schedule(&priv->poll_tx_task);
4671 }
4672}
4673
4674static void mwl8k_rx_poll(struct tasklet_struct *t)
4675{
4676 struct mwl8k_priv *priv = from_tasklet(priv, t, poll_rx_task);
4677 struct ieee80211_hw *hw = pci_get_drvdata(priv->pdev);
4678 int limit;
4679
4680 limit = 32;
4681 limit -= rxq_process(hw, 0, limit);
4682 limit -= rxq_refill(hw, 0, limit);
4683
4684 if (limit) {
4685 writel(~MWL8K_A2H_INT_RX_READY,
4686 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4687 } else {
4688 tasklet_schedule(&priv->poll_rx_task);
4689 }
4690}
4691
4692
4693/*
4694 * Core driver operations.
4695 */
4696static void mwl8k_tx(struct ieee80211_hw *hw,
4697 struct ieee80211_tx_control *control,
4698 struct sk_buff *skb)
4699{
4700 struct mwl8k_priv *priv = hw->priv;
4701 int index = skb_get_queue_mapping(skb);
4702
4703 if (!priv->radio_on) {
4704 wiphy_debug(hw->wiphy,
4705 "dropped TX frame since radio disabled\n");
4706 dev_kfree_skb(skb);
4707 return;
4708 }
4709
4710 mwl8k_txq_xmit(hw, index, control->sta, skb);
4711}
4712
4713static int mwl8k_start(struct ieee80211_hw *hw)
4714{
4715 struct mwl8k_priv *priv = hw->priv;
4716 int rc;
4717
4718 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4719 IRQF_SHARED, MWL8K_NAME, hw);
4720 if (rc) {
4721 priv->irq = -1;
4722 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4723 return -EIO;
4724 }
4725 priv->irq = priv->pdev->irq;
4726
4727 /* Enable TX reclaim and RX tasklets. */
4728 tasklet_enable(&priv->poll_tx_task);
4729 tasklet_enable(&priv->poll_rx_task);
4730
4731 /* Enable interrupts */
4732 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4733 iowrite32(MWL8K_A2H_EVENTS,
4734 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4735
4736 rc = mwl8k_fw_lock(hw);
4737 if (!rc) {
4738 rc = mwl8k_cmd_radio_enable(hw);
4739
4740 if (!priv->ap_fw) {
4741 if (!rc)
4742 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4743
4744 if (!rc)
4745 rc = mwl8k_cmd_set_pre_scan(hw);
4746
4747 if (!rc)
4748 rc = mwl8k_cmd_set_post_scan(hw,
4749 "\x00\x00\x00\x00\x00\x00");
4750 }
4751
4752 if (!rc)
4753 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4754
4755 if (!rc)
4756 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4757
4758 mwl8k_fw_unlock(hw);
4759 }
4760
4761 if (rc) {
4762 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4763 free_irq(priv->pdev->irq, hw);
4764 priv->irq = -1;
4765 tasklet_disable(&priv->poll_tx_task);
4766 tasklet_disable(&priv->poll_rx_task);
4767 } else {
4768 ieee80211_wake_queues(hw);
4769 }
4770
4771 return rc;
4772}
4773
4774static void mwl8k_stop(struct ieee80211_hw *hw, bool suspend)
4775{
4776 struct mwl8k_priv *priv = hw->priv;
4777 int i;
4778
4779 if (!priv->hw_restart_in_progress)
4780 mwl8k_cmd_radio_disable(hw);
4781
4782 ieee80211_stop_queues(hw);
4783
4784 /* Disable interrupts */
4785 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4786 if (priv->irq != -1) {
4787 free_irq(priv->pdev->irq, hw);
4788 priv->irq = -1;
4789 }
4790
4791 /* Stop finalize join worker */
4792 cancel_work_sync(&priv->finalize_join_worker);
4793 cancel_work_sync(&priv->watchdog_ba_handle);
4794 if (priv->beacon_skb != NULL)
4795 dev_kfree_skb(priv->beacon_skb);
4796
4797 /* Stop TX reclaim and RX tasklets. */
4798 tasklet_disable(&priv->poll_tx_task);
4799 tasklet_disable(&priv->poll_rx_task);
4800
4801 /* Return all skbs to mac80211 */
4802 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4803 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4804}
4805
4806static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4807
4808static int mwl8k_add_interface(struct ieee80211_hw *hw,
4809 struct ieee80211_vif *vif)
4810{
4811 struct mwl8k_priv *priv = hw->priv;
4812 struct mwl8k_vif *mwl8k_vif;
4813 u32 macids_supported;
4814 int macid, rc;
4815 struct mwl8k_device_info *di;
4816
4817 /*
4818 * Reject interface creation if sniffer mode is active, as
4819 * STA operation is mutually exclusive with hardware sniffer
4820 * mode. (Sniffer mode is only used on STA firmware.)
4821 */
4822 if (priv->sniffer_enabled) {
4823 wiphy_info(hw->wiphy,
4824 "unable to create STA interface because sniffer mode is enabled\n");
4825 return -EINVAL;
4826 }
4827
4828 di = priv->device_info;
4829 switch (vif->type) {
4830 case NL80211_IFTYPE_AP:
4831 if (!priv->ap_fw && di->fw_image_ap) {
4832 /* we must load the ap fw to meet this request */
4833 if (!list_empty(&priv->vif_list))
4834 return -EBUSY;
4835 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4836 if (rc)
4837 return rc;
4838 }
4839 macids_supported = priv->ap_macids_supported;
4840 break;
4841 case NL80211_IFTYPE_STATION:
4842 if (priv->ap_fw && di->fw_image_sta) {
4843 if (!list_empty(&priv->vif_list)) {
4844 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4845 "Adding STA interface for WDS");
4846 } else {
4847 /* we must load the sta fw to
4848 * meet this request.
4849 */
4850 rc = mwl8k_reload_firmware(hw,
4851 di->fw_image_sta);
4852 if (rc)
4853 return rc;
4854 }
4855 }
4856 macids_supported = priv->sta_macids_supported;
4857 break;
4858 default:
4859 return -EINVAL;
4860 }
4861
4862 macid = ffs(macids_supported & ~priv->macids_used);
4863 if (!macid--)
4864 return -EBUSY;
4865
4866 /* Setup driver private area. */
4867 mwl8k_vif = MWL8K_VIF(vif);
4868 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4869 mwl8k_vif->vif = vif;
4870 mwl8k_vif->macid = macid;
4871 mwl8k_vif->seqno = 0;
4872 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4873 mwl8k_vif->is_hw_crypto_enabled = false;
4874
4875 /* Set the mac address. */
4876 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4877
4878 if (vif->type == NL80211_IFTYPE_AP)
4879 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4880
4881 priv->macids_used |= 1 << mwl8k_vif->macid;
4882 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4883
4884 return 0;
4885}
4886
4887static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4888{
4889 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4890 if (!priv->macids_used)
4891 return;
4892
4893 priv->macids_used &= ~(1 << vif->macid);
4894 list_del(&vif->list);
4895}
4896
4897static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4898 struct ieee80211_vif *vif)
4899{
4900 struct mwl8k_priv *priv = hw->priv;
4901 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4902
4903 if (vif->type == NL80211_IFTYPE_AP)
4904 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4905
4906 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4907
4908 mwl8k_remove_vif(priv, mwl8k_vif);
4909}
4910
4911static void mwl8k_hw_restart_work(struct work_struct *work)
4912{
4913 struct mwl8k_priv *priv =
4914 container_of(work, struct mwl8k_priv, fw_reload);
4915 struct ieee80211_hw *hw = priv->hw;
4916 struct mwl8k_device_info *di;
4917 int rc;
4918
4919 /* If some command is waiting for a response, clear it */
4920 if (priv->hostcmd_wait != NULL) {
4921 complete(priv->hostcmd_wait);
4922 priv->hostcmd_wait = NULL;
4923 }
4924
4925 priv->hw_restart_owner = current;
4926 di = priv->device_info;
4927 mwl8k_fw_lock(hw);
4928
4929 if (priv->ap_fw)
4930 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4931 else
4932 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4933
4934 if (rc)
4935 goto fail;
4936
4937 priv->hw_restart_owner = NULL;
4938 priv->hw_restart_in_progress = false;
4939
4940 /*
4941 * This unlock will wake up the queues and
4942 * also opens the command path for other
4943 * commands
4944 */
4945 mwl8k_fw_unlock(hw);
4946
4947 ieee80211_restart_hw(hw);
4948
4949 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4950
4951 return;
4952fail:
4953 mwl8k_fw_unlock(hw);
4954
4955 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4956}
4957
4958static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4959{
4960 struct ieee80211_conf *conf = &hw->conf;
4961 struct mwl8k_priv *priv = hw->priv;
4962 int rc;
4963
4964 rc = mwl8k_fw_lock(hw);
4965 if (rc)
4966 return rc;
4967
4968 if (conf->flags & IEEE80211_CONF_IDLE)
4969 rc = mwl8k_cmd_radio_disable(hw);
4970 else
4971 rc = mwl8k_cmd_radio_enable(hw);
4972 if (rc)
4973 goto out;
4974
4975 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4976 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4977 if (rc)
4978 goto out;
4979 }
4980
4981 if (conf->power_level > 18)
4982 conf->power_level = 18;
4983
4984 if (priv->ap_fw) {
4985
4986 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4987 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4988 if (rc)
4989 goto out;
4990 }
4991
4992
4993 } else {
4994 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4995 if (rc)
4996 goto out;
4997 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4998 }
4999
5000out:
5001 mwl8k_fw_unlock(hw);
5002
5003 return rc;
5004}
5005
5006static void
5007mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5008 struct ieee80211_bss_conf *info, u32 changed)
5009{
5010 struct mwl8k_priv *priv = hw->priv;
5011 u32 ap_legacy_rates = 0;
5012 u8 ap_mcs_rates[16];
5013 int rc;
5014
5015 if (mwl8k_fw_lock(hw))
5016 return;
5017
5018 /*
5019 * No need to capture a beacon if we're no longer associated.
5020 */
5021 if ((changed & BSS_CHANGED_ASSOC) && !vif->cfg.assoc)
5022 priv->capture_beacon = false;
5023
5024 /*
5025 * Get the AP's legacy and MCS rates.
5026 */
5027 if (vif->cfg.assoc) {
5028 struct ieee80211_sta *ap;
5029
5030 rcu_read_lock();
5031
5032 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
5033 if (ap == NULL) {
5034 rcu_read_unlock();
5035 goto out;
5036 }
5037
5038 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ) {
5039 ap_legacy_rates = ap->deflink.supp_rates[NL80211_BAND_2GHZ];
5040 } else {
5041 ap_legacy_rates =
5042 ap->deflink.supp_rates[NL80211_BAND_5GHZ] << 5;
5043 }
5044 memcpy(ap_mcs_rates, &ap->deflink.ht_cap.mcs, 16);
5045
5046 rcu_read_unlock();
5047
5048 if (changed & BSS_CHANGED_ASSOC) {
5049 if (!priv->ap_fw) {
5050 rc = mwl8k_cmd_set_rate(hw, vif,
5051 ap_legacy_rates,
5052 ap_mcs_rates);
5053 if (rc)
5054 goto out;
5055
5056 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
5057 if (rc)
5058 goto out;
5059 } else {
5060 int idx;
5061 int rate;
5062
5063 /* Use AP firmware specific rate command.
5064 */
5065 idx = ffs(vif->bss_conf.basic_rates);
5066 if (idx)
5067 idx--;
5068
5069 if (hw->conf.chandef.chan->band ==
5070 NL80211_BAND_2GHZ)
5071 rate = mwl8k_rates_24[idx].hw_value;
5072 else
5073 rate = mwl8k_rates_50[idx].hw_value;
5074
5075 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5076 }
5077 }
5078 }
5079
5080 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5081 rc = mwl8k_set_radio_preamble(hw,
5082 vif->bss_conf.use_short_preamble);
5083 if (rc)
5084 goto out;
5085 }
5086
5087 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
5088 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
5089 if (rc)
5090 goto out;
5091 }
5092
5093 if (vif->cfg.assoc && !priv->ap_fw &&
5094 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
5095 BSS_CHANGED_HT))) {
5096 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
5097 if (rc)
5098 goto out;
5099 }
5100
5101 if (vif->cfg.assoc &&
5102 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
5103 /*
5104 * Finalize the join. Tell rx handler to process
5105 * next beacon from our BSSID.
5106 */
5107 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
5108 priv->capture_beacon = true;
5109 }
5110
5111out:
5112 mwl8k_fw_unlock(hw);
5113}
5114
5115static void
5116mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5117 struct ieee80211_bss_conf *info, u32 changed)
5118{
5119 int rc;
5120
5121 if (mwl8k_fw_lock(hw))
5122 return;
5123
5124 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5125 rc = mwl8k_set_radio_preamble(hw,
5126 vif->bss_conf.use_short_preamble);
5127 if (rc)
5128 goto out;
5129 }
5130
5131 if (changed & BSS_CHANGED_BASIC_RATES) {
5132 int idx;
5133 int rate;
5134
5135 /*
5136 * Use lowest supported basic rate for multicasts
5137 * and management frames (such as probe responses --
5138 * beacons will always go out at 1 Mb/s).
5139 */
5140 idx = ffs(vif->bss_conf.basic_rates);
5141 if (idx)
5142 idx--;
5143
5144 if (hw->conf.chandef.chan->band == NL80211_BAND_2GHZ)
5145 rate = mwl8k_rates_24[idx].hw_value;
5146 else
5147 rate = mwl8k_rates_50[idx].hw_value;
5148
5149 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5150 }
5151
5152 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
5153 struct sk_buff *skb;
5154
5155 skb = ieee80211_beacon_get(hw, vif, 0);
5156 if (skb != NULL) {
5157 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5158 kfree_skb(skb);
5159 }
5160 }
5161
5162 if (changed & BSS_CHANGED_BEACON_ENABLED)
5163 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5164
5165out:
5166 mwl8k_fw_unlock(hw);
5167}
5168
5169static void
5170mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5171 struct ieee80211_bss_conf *info, u64 changed)
5172{
5173 if (vif->type == NL80211_IFTYPE_STATION)
5174 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5175 if (vif->type == NL80211_IFTYPE_AP)
5176 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5177}
5178
5179static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5180 struct netdev_hw_addr_list *mc_list)
5181{
5182 struct mwl8k_cmd_pkt_hdr *cmd;
5183
5184 /*
5185 * Synthesize and return a command packet that programs the
5186 * hardware multicast address filter. At this point we don't
5187 * know whether FIF_ALLMULTI is being requested, but if it is,
5188 * we'll end up throwing this packet away and creating a new
5189 * one in mwl8k_configure_filter().
5190 */
5191 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5192
5193 return (unsigned long)cmd;
5194}
5195
5196static int
5197mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5198 unsigned int changed_flags,
5199 unsigned int *total_flags)
5200{
5201 struct mwl8k_priv *priv = hw->priv;
5202
5203 /*
5204 * Hardware sniffer mode is mutually exclusive with STA
5205 * operation, so refuse to enable sniffer mode if a STA
5206 * interface is active.
5207 */
5208 if (!list_empty(&priv->vif_list)) {
5209 if (net_ratelimit())
5210 wiphy_info(hw->wiphy,
5211 "not enabling sniffer mode because STA interface is active\n");
5212 return 0;
5213 }
5214
5215 if (!priv->sniffer_enabled) {
5216 if (mwl8k_cmd_enable_sniffer(hw, 1))
5217 return 0;
5218 priv->sniffer_enabled = true;
5219 }
5220
5221 *total_flags &= FIF_ALLMULTI |
5222 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5223 FIF_OTHER_BSS;
5224
5225 return 1;
5226}
5227
5228static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5229{
5230 if (!list_empty(&priv->vif_list))
5231 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5232
5233 return NULL;
5234}
5235
5236static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5237 unsigned int changed_flags,
5238 unsigned int *total_flags,
5239 u64 multicast)
5240{
5241 struct mwl8k_priv *priv = hw->priv;
5242 struct mwl8k_cmd_pkt_hdr *cmd = (void *)(unsigned long)multicast;
5243
5244 /*
5245 * AP firmware doesn't allow fine-grained control over
5246 * the receive filter.
5247 */
5248 if (priv->ap_fw) {
5249 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5250 kfree(cmd);
5251 return;
5252 }
5253
5254 /*
5255 * Enable hardware sniffer mode if FIF_CONTROL or
5256 * FIF_OTHER_BSS is requested.
5257 */
5258 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5259 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5260 kfree(cmd);
5261 return;
5262 }
5263
5264 /* Clear unsupported feature flags */
5265 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5266
5267 if (mwl8k_fw_lock(hw)) {
5268 kfree(cmd);
5269 return;
5270 }
5271
5272 if (priv->sniffer_enabled) {
5273 mwl8k_cmd_enable_sniffer(hw, 0);
5274 priv->sniffer_enabled = false;
5275 }
5276
5277 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5278 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5279 /*
5280 * Disable the BSS filter.
5281 */
5282 mwl8k_cmd_set_pre_scan(hw);
5283 } else {
5284 struct mwl8k_vif *mwl8k_vif;
5285 const u8 *bssid;
5286
5287 /*
5288 * Enable the BSS filter.
5289 *
5290 * If there is an active STA interface, use that
5291 * interface's BSSID, otherwise use a dummy one
5292 * (where the OUI part needs to be nonzero for
5293 * the BSSID to be accepted by POST_SCAN).
5294 */
5295 mwl8k_vif = mwl8k_first_vif(priv);
5296 if (mwl8k_vif != NULL)
5297 bssid = mwl8k_vif->vif->bss_conf.bssid;
5298 else
5299 bssid = "\x01\x00\x00\x00\x00\x00";
5300
5301 mwl8k_cmd_set_post_scan(hw, bssid);
5302 }
5303 }
5304
5305 /*
5306 * If FIF_ALLMULTI is being requested, throw away the command
5307 * packet that ->prepare_multicast() built and replace it with
5308 * a command packet that enables reception of all multicast
5309 * packets.
5310 */
5311 if (*total_flags & FIF_ALLMULTI) {
5312 kfree(cmd);
5313 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5314 }
5315
5316 if (cmd != NULL) {
5317 mwl8k_post_cmd(hw, cmd);
5318 kfree(cmd);
5319 }
5320
5321 mwl8k_fw_unlock(hw);
5322}
5323
5324static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5325{
5326 return mwl8k_cmd_set_rts_threshold(hw, value);
5327}
5328
5329static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5330 struct ieee80211_vif *vif,
5331 struct ieee80211_sta *sta)
5332{
5333 struct mwl8k_priv *priv = hw->priv;
5334
5335 if (priv->ap_fw)
5336 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5337 else
5338 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5339}
5340
5341static int mwl8k_sta_add(struct ieee80211_hw *hw,
5342 struct ieee80211_vif *vif,
5343 struct ieee80211_sta *sta)
5344{
5345 struct mwl8k_priv *priv = hw->priv;
5346 int ret;
5347 int i;
5348 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5349 struct ieee80211_key_conf *key;
5350
5351 if (!priv->ap_fw) {
5352 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5353 if (ret >= 0) {
5354 MWL8K_STA(sta)->peer_id = ret;
5355 if (sta->deflink.ht_cap.ht_supported)
5356 MWL8K_STA(sta)->is_ampdu_allowed = true;
5357 ret = 0;
5358 }
5359
5360 } else {
5361 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5362 }
5363
5364 for (i = 0; i < NUM_WEP_KEYS; i++) {
5365 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5366 if (mwl8k_vif->wep_key_conf[i].enabled)
5367 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5368 }
5369 return ret;
5370}
5371
5372static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5373 struct ieee80211_vif *vif,
5374 unsigned int link_id, u16 queue,
5375 const struct ieee80211_tx_queue_params *params)
5376{
5377 struct mwl8k_priv *priv = hw->priv;
5378 int rc;
5379
5380 rc = mwl8k_fw_lock(hw);
5381 if (!rc) {
5382 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5383 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5384
5385 if (!priv->wmm_enabled)
5386 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5387
5388 if (!rc) {
5389 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5390 rc = mwl8k_cmd_set_edca_params(hw, q,
5391 params->cw_min,
5392 params->cw_max,
5393 params->aifs,
5394 params->txop);
5395 }
5396
5397 mwl8k_fw_unlock(hw);
5398 }
5399
5400 return rc;
5401}
5402
5403static int mwl8k_get_stats(struct ieee80211_hw *hw,
5404 struct ieee80211_low_level_stats *stats)
5405{
5406 return mwl8k_cmd_get_stat(hw, stats);
5407}
5408
5409static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5410 struct survey_info *survey)
5411{
5412 struct mwl8k_priv *priv = hw->priv;
5413 struct ieee80211_conf *conf = &hw->conf;
5414 struct ieee80211_supported_band *sband;
5415
5416 if (priv->ap_fw) {
5417 sband = hw->wiphy->bands[NL80211_BAND_2GHZ];
5418
5419 if (sband && idx >= sband->n_channels) {
5420 idx -= sband->n_channels;
5421 sband = NULL;
5422 }
5423
5424 if (!sband)
5425 sband = hw->wiphy->bands[NL80211_BAND_5GHZ];
5426
5427 if (!sband || idx >= sband->n_channels)
5428 return -ENOENT;
5429
5430 memcpy(survey, &priv->survey[idx], sizeof(*survey));
5431 survey->channel = &sband->channels[idx];
5432
5433 return 0;
5434 }
5435
5436 if (idx != 0)
5437 return -ENOENT;
5438
5439 survey->channel = conf->chandef.chan;
5440 survey->filled = SURVEY_INFO_NOISE_DBM;
5441 survey->noise = priv->noise;
5442
5443 return 0;
5444}
5445
5446#define MAX_AMPDU_ATTEMPTS 5
5447
5448static int
5449mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5450 struct ieee80211_ampdu_params *params)
5451{
5452 struct ieee80211_sta *sta = params->sta;
5453 enum ieee80211_ampdu_mlme_action action = params->action;
5454 u16 tid = params->tid;
5455 u16 *ssn = ¶ms->ssn;
5456 u8 buf_size = params->buf_size;
5457 int i, rc = 0;
5458 struct mwl8k_priv *priv = hw->priv;
5459 struct mwl8k_ampdu_stream *stream;
5460 u8 *addr = sta->addr, idx;
5461 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5462
5463 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
5464 return -ENOTSUPP;
5465
5466 spin_lock(&priv->stream_lock);
5467 stream = mwl8k_lookup_stream(hw, addr, tid);
5468
5469 switch (action) {
5470 case IEEE80211_AMPDU_RX_START:
5471 case IEEE80211_AMPDU_RX_STOP:
5472 break;
5473 case IEEE80211_AMPDU_TX_START:
5474 /* By the time we get here the hw queues may contain outgoing
5475 * packets for this RA/TID that are not part of this BA
5476 * session. The hw will assign sequence numbers to these
5477 * packets as they go out. So if we query the hw for its next
5478 * sequence number and use that for the SSN here, it may end up
5479 * being wrong, which will lead to sequence number mismatch at
5480 * the recipient. To avoid this, we reset the sequence number
5481 * to O for the first MPDU in this BA stream.
5482 */
5483 *ssn = 0;
5484 if (stream == NULL) {
5485 /* This means that somebody outside this driver called
5486 * ieee80211_start_tx_ba_session. This is unexpected
5487 * because we do our own rate control. Just warn and
5488 * move on.
5489 */
5490 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5491 "Proceeding anyway.\n", __func__);
5492 stream = mwl8k_add_stream(hw, sta, tid);
5493 }
5494 if (stream == NULL) {
5495 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5496 rc = -EBUSY;
5497 break;
5498 }
5499 stream->state = AMPDU_STREAM_IN_PROGRESS;
5500
5501 /* Release the lock before we do the time consuming stuff */
5502 spin_unlock(&priv->stream_lock);
5503 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5504
5505 /* Check if link is still valid */
5506 if (!sta_info->is_ampdu_allowed) {
5507 spin_lock(&priv->stream_lock);
5508 mwl8k_remove_stream(hw, stream);
5509 spin_unlock(&priv->stream_lock);
5510 return -EBUSY;
5511 }
5512
5513 rc = mwl8k_check_ba(hw, stream, vif);
5514
5515 /* If HW restart is in progress mwl8k_post_cmd will
5516 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5517 * such cases
5518 */
5519 if (!rc || rc == -EBUSY)
5520 break;
5521 /*
5522 * HW queues take time to be flushed, give them
5523 * sufficient time
5524 */
5525
5526 msleep(1000);
5527 }
5528 spin_lock(&priv->stream_lock);
5529 if (rc) {
5530 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5531 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5532 mwl8k_remove_stream(hw, stream);
5533 rc = -EBUSY;
5534 break;
5535 }
5536 rc = IEEE80211_AMPDU_TX_START_IMMEDIATE;
5537 break;
5538 case IEEE80211_AMPDU_TX_STOP_CONT:
5539 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5540 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5541 if (stream) {
5542 if (stream->state == AMPDU_STREAM_ACTIVE) {
5543 idx = stream->idx;
5544 spin_unlock(&priv->stream_lock);
5545 mwl8k_destroy_ba(hw, idx);
5546 spin_lock(&priv->stream_lock);
5547 }
5548 mwl8k_remove_stream(hw, stream);
5549 }
5550 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5551 break;
5552 case IEEE80211_AMPDU_TX_OPERATIONAL:
5553 BUG_ON(stream == NULL);
5554 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5555 spin_unlock(&priv->stream_lock);
5556 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5557 spin_lock(&priv->stream_lock);
5558 if (!rc)
5559 stream->state = AMPDU_STREAM_ACTIVE;
5560 else {
5561 idx = stream->idx;
5562 spin_unlock(&priv->stream_lock);
5563 mwl8k_destroy_ba(hw, idx);
5564 spin_lock(&priv->stream_lock);
5565 wiphy_debug(hw->wiphy,
5566 "Failed adding stream for sta %pM tid %d\n",
5567 addr, tid);
5568 mwl8k_remove_stream(hw, stream);
5569 }
5570 break;
5571
5572 default:
5573 rc = -ENOTSUPP;
5574 }
5575
5576 spin_unlock(&priv->stream_lock);
5577 return rc;
5578}
5579
5580static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
5581 struct ieee80211_vif *vif,
5582 const u8 *mac_addr)
5583{
5584 struct mwl8k_priv *priv = hw->priv;
5585 u8 tmp;
5586
5587 if (!priv->ap_fw)
5588 return;
5589
5590 /* clear all stats */
5591 priv->channel_time = 0;
5592 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5593 ioread32(priv->regs + NOK_CCA_CNT_REG);
5594 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5595
5596 priv->sw_scan_start = true;
5597}
5598
5599static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
5600 struct ieee80211_vif *vif)
5601{
5602 struct mwl8k_priv *priv = hw->priv;
5603 u8 tmp;
5604
5605 if (!priv->ap_fw)
5606 return;
5607
5608 priv->sw_scan_start = false;
5609
5610 /* clear all stats */
5611 priv->channel_time = 0;
5612 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5613 ioread32(priv->regs + NOK_CCA_CNT_REG);
5614 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5615}
5616
5617static const struct ieee80211_ops mwl8k_ops = {
5618 .add_chanctx = ieee80211_emulate_add_chanctx,
5619 .remove_chanctx = ieee80211_emulate_remove_chanctx,
5620 .change_chanctx = ieee80211_emulate_change_chanctx,
5621 .switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
5622 .tx = mwl8k_tx,
5623 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
5624 .start = mwl8k_start,
5625 .stop = mwl8k_stop,
5626 .add_interface = mwl8k_add_interface,
5627 .remove_interface = mwl8k_remove_interface,
5628 .config = mwl8k_config,
5629 .bss_info_changed = mwl8k_bss_info_changed,
5630 .prepare_multicast = mwl8k_prepare_multicast,
5631 .configure_filter = mwl8k_configure_filter,
5632 .set_key = mwl8k_set_key,
5633 .set_rts_threshold = mwl8k_set_rts_threshold,
5634 .sta_add = mwl8k_sta_add,
5635 .sta_remove = mwl8k_sta_remove,
5636 .conf_tx = mwl8k_conf_tx,
5637 .get_stats = mwl8k_get_stats,
5638 .get_survey = mwl8k_get_survey,
5639 .ampdu_action = mwl8k_ampdu_action,
5640 .sw_scan_start = mwl8k_sw_scan_start,
5641 .sw_scan_complete = mwl8k_sw_scan_complete,
5642};
5643
5644static void mwl8k_finalize_join_worker(struct work_struct *work)
5645{
5646 struct mwl8k_priv *priv =
5647 container_of(work, struct mwl8k_priv, finalize_join_worker);
5648 struct sk_buff *skb = priv->beacon_skb;
5649 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5650 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5651 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5652 mgmt->u.beacon.variable, len);
5653 int dtim_period = 1;
5654
5655 if (tim && tim[1] >= 2)
5656 dtim_period = tim[3];
5657
5658 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5659
5660 dev_kfree_skb(skb);
5661 priv->beacon_skb = NULL;
5662}
5663
5664enum {
5665 MWL8363 = 0,
5666 MWL8687,
5667 MWL8366,
5668 MWL8764,
5669};
5670
5671#define MWL8K_8366_AP_FW_API 3
5672#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5673#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5674
5675#define MWL8K_8764_AP_FW_API 1
5676#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5677#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5678
5679static struct mwl8k_device_info mwl8k_info_tbl[] = {
5680 [MWL8363] = {
5681 .part_name = "88w8363",
5682 .helper_image = "mwl8k/helper_8363.fw",
5683 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5684 },
5685 [MWL8687] = {
5686 .part_name = "88w8687",
5687 .helper_image = "mwl8k/helper_8687.fw",
5688 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5689 },
5690 [MWL8366] = {
5691 .part_name = "88w8366",
5692 .helper_image = "mwl8k/helper_8366.fw",
5693 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5694 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5695 .fw_api_ap = MWL8K_8366_AP_FW_API,
5696 .ap_rxd_ops = &rxd_ap_ops,
5697 },
5698 [MWL8764] = {
5699 .part_name = "88w8764",
5700 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5701 .fw_api_ap = MWL8K_8764_AP_FW_API,
5702 .ap_rxd_ops = &rxd_ap_ops,
5703 },
5704};
5705
5706MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5707MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5708MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5709MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5710MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5711MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5712MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5713
5714static const struct pci_device_id mwl8k_pci_id_table[] = {
5715 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5716 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5717 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5718 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5719 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5720 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5721 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5722 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5723 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5724 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5725 { },
5726};
5727MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5728
5729static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5730{
5731 int rc;
5732 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5733 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5734 priv->fw_pref, priv->fw_alt);
5735 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5736 if (rc) {
5737 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5738 pci_name(priv->pdev), priv->fw_alt);
5739 return rc;
5740 }
5741 return 0;
5742}
5743
5744static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5745static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5746{
5747 struct mwl8k_priv *priv = context;
5748 struct mwl8k_device_info *di = priv->device_info;
5749 int rc;
5750
5751 switch (priv->fw_state) {
5752 case FW_STATE_INIT:
5753 if (!fw) {
5754 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5755 pci_name(priv->pdev), di->helper_image);
5756 goto fail;
5757 }
5758 priv->fw_helper = fw;
5759 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5760 true);
5761 if (rc && priv->fw_alt) {
5762 rc = mwl8k_request_alt_fw(priv);
5763 if (rc)
5764 goto fail;
5765 priv->fw_state = FW_STATE_LOADING_ALT;
5766 } else if (rc)
5767 goto fail;
5768 else
5769 priv->fw_state = FW_STATE_LOADING_PREF;
5770 break;
5771
5772 case FW_STATE_LOADING_PREF:
5773 if (!fw) {
5774 if (priv->fw_alt) {
5775 rc = mwl8k_request_alt_fw(priv);
5776 if (rc)
5777 goto fail;
5778 priv->fw_state = FW_STATE_LOADING_ALT;
5779 } else
5780 goto fail;
5781 } else {
5782 priv->fw_ucode = fw;
5783 rc = mwl8k_firmware_load_success(priv);
5784 if (rc)
5785 goto fail;
5786 else
5787 complete(&priv->firmware_loading_complete);
5788 }
5789 break;
5790
5791 case FW_STATE_LOADING_ALT:
5792 if (!fw) {
5793 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5794 pci_name(priv->pdev), di->helper_image);
5795 goto fail;
5796 }
5797 priv->fw_ucode = fw;
5798 rc = mwl8k_firmware_load_success(priv);
5799 if (rc)
5800 goto fail;
5801 else
5802 complete(&priv->firmware_loading_complete);
5803 break;
5804
5805 default:
5806 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5807 MWL8K_NAME, priv->fw_state);
5808 BUG_ON(1);
5809 }
5810
5811 return;
5812
5813fail:
5814 priv->fw_state = FW_STATE_ERROR;
5815 complete(&priv->firmware_loading_complete);
5816 mwl8k_release_firmware(priv);
5817 device_release_driver(&priv->pdev->dev);
5818}
5819
5820#define MAX_RESTART_ATTEMPTS 1
5821static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5822 bool nowait)
5823{
5824 struct mwl8k_priv *priv = hw->priv;
5825 int rc;
5826 int count = MAX_RESTART_ATTEMPTS;
5827
5828retry:
5829 /* Reset firmware and hardware */
5830 mwl8k_hw_reset(priv);
5831
5832 /* Ask userland hotplug daemon for the device firmware */
5833 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5834 if (rc) {
5835 wiphy_err(hw->wiphy, "Firmware files not found\n");
5836 return rc;
5837 }
5838
5839 if (nowait)
5840 return rc;
5841
5842 /* Load firmware into hardware */
5843 rc = mwl8k_load_firmware(hw);
5844 if (rc)
5845 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5846
5847 /* Reclaim memory once firmware is successfully loaded */
5848 mwl8k_release_firmware(priv);
5849
5850 if (rc && count) {
5851 /* FW did not start successfully;
5852 * lets try one more time
5853 */
5854 count--;
5855 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5856 msleep(20);
5857 goto retry;
5858 }
5859
5860 return rc;
5861}
5862
5863static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5864{
5865 struct mwl8k_priv *priv = hw->priv;
5866 int rc = 0;
5867 int i;
5868
5869 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5870 rc = mwl8k_txq_init(hw, i);
5871 if (rc)
5872 break;
5873 if (priv->ap_fw)
5874 iowrite32(priv->txq[i].txd_dma,
5875 priv->sram + priv->txq_offset[i]);
5876 }
5877 return rc;
5878}
5879
5880/* initialize hw after successfully loading a firmware image */
5881static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5882{
5883 struct mwl8k_priv *priv = hw->priv;
5884 int rc = 0;
5885 int i;
5886
5887 if (priv->ap_fw) {
5888 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5889 if (priv->rxd_ops == NULL) {
5890 wiphy_err(hw->wiphy,
5891 "Driver does not have AP firmware image support for this hardware\n");
5892 rc = -ENOENT;
5893 goto err_stop_firmware;
5894 }
5895 } else {
5896 priv->rxd_ops = &rxd_sta_ops;
5897 }
5898
5899 priv->sniffer_enabled = false;
5900 priv->wmm_enabled = false;
5901 priv->pending_tx_pkts = 0;
5902 atomic_set(&priv->watchdog_event_pending, 0);
5903
5904 rc = mwl8k_rxq_init(hw, 0);
5905 if (rc)
5906 goto err_stop_firmware;
5907 rxq_refill(hw, 0, INT_MAX);
5908
5909 /* For the sta firmware, we need to know the dma addresses of tx queues
5910 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5911 * prior to issuing this command. But for the AP case, we learn the
5912 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5913 * case we must initialize the tx queues after.
5914 */
5915 priv->num_ampdu_queues = 0;
5916 if (!priv->ap_fw) {
5917 rc = mwl8k_init_txqs(hw);
5918 if (rc)
5919 goto err_free_queues;
5920 }
5921
5922 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5923 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5924 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5925 MWL8K_A2H_INT_BA_WATCHDOG,
5926 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5927 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5928 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5929
5930 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5931 IRQF_SHARED, MWL8K_NAME, hw);
5932 if (rc) {
5933 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5934 goto err_free_queues;
5935 }
5936
5937 /*
5938 * When hw restart is requested,
5939 * mac80211 will take care of clearing
5940 * the ampdu streams, so do not clear
5941 * the ampdu state here
5942 */
5943 if (!priv->hw_restart_in_progress)
5944 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5945
5946 /*
5947 * Temporarily enable interrupts. Initial firmware host
5948 * commands use interrupts and avoid polling. Disable
5949 * interrupts when done.
5950 */
5951 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5952
5953 /* Get config data, mac addrs etc */
5954 if (priv->ap_fw) {
5955 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5956 if (!rc)
5957 rc = mwl8k_init_txqs(hw);
5958 if (!rc)
5959 rc = mwl8k_cmd_set_hw_spec(hw);
5960 } else {
5961 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5962 }
5963 if (rc) {
5964 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5965 goto err_free_irq;
5966 }
5967
5968 /* Turn radio off */
5969 rc = mwl8k_cmd_radio_disable(hw);
5970 if (rc) {
5971 wiphy_err(hw->wiphy, "Cannot disable\n");
5972 goto err_free_irq;
5973 }
5974
5975 /* Clear MAC address */
5976 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5977 if (rc) {
5978 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5979 goto err_free_irq;
5980 }
5981
5982 /* Configure Antennas */
5983 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5984 if (rc)
5985 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5986 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5987 if (rc)
5988 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5989
5990
5991 /* Disable interrupts */
5992 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5993 free_irq(priv->pdev->irq, hw);
5994
5995 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5996 priv->device_info->part_name,
5997 priv->hw_rev, hw->wiphy->perm_addr,
5998 priv->ap_fw ? "AP" : "STA",
5999 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
6000 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
6001
6002 return 0;
6003
6004err_free_irq:
6005 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
6006 free_irq(priv->pdev->irq, hw);
6007
6008err_free_queues:
6009 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6010 mwl8k_txq_deinit(hw, i);
6011 mwl8k_rxq_deinit(hw, 0);
6012
6013err_stop_firmware:
6014 mwl8k_hw_reset(priv);
6015
6016 return rc;
6017}
6018
6019/*
6020 * invoke mwl8k_reload_firmware to change the firmware image after the device
6021 * has already been registered
6022 */
6023static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
6024{
6025 int i, rc = 0;
6026 struct mwl8k_priv *priv = hw->priv;
6027 struct mwl8k_vif *vif, *tmp_vif;
6028
6029 mwl8k_stop(hw, false);
6030 mwl8k_rxq_deinit(hw, 0);
6031
6032 /*
6033 * All the existing interfaces are re-added by the ieee80211_reconfig;
6034 * which means driver should remove existing interfaces before calling
6035 * ieee80211_restart_hw
6036 */
6037 if (priv->hw_restart_in_progress)
6038 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6039 mwl8k_remove_vif(priv, vif);
6040
6041 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6042 mwl8k_txq_deinit(hw, i);
6043
6044 rc = mwl8k_init_firmware(hw, fw_image, false);
6045 if (rc)
6046 goto fail;
6047
6048 rc = mwl8k_probe_hw(hw);
6049 if (rc)
6050 goto fail;
6051
6052 if (priv->hw_restart_in_progress)
6053 return rc;
6054
6055 rc = mwl8k_start(hw);
6056 if (rc)
6057 goto fail;
6058
6059 rc = mwl8k_config(hw, ~0);
6060 if (rc)
6061 goto fail;
6062
6063 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6064 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]);
6065 if (rc)
6066 goto fail;
6067 }
6068
6069 return rc;
6070
6071fail:
6072 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6073 return rc;
6074}
6075
6076static const struct ieee80211_iface_limit ap_if_limits[] = {
6077 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
6078 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
6079};
6080
6081static const struct ieee80211_iface_combination ap_if_comb = {
6082 .limits = ap_if_limits,
6083 .n_limits = ARRAY_SIZE(ap_if_limits),
6084 .max_interfaces = 8,
6085 .num_different_channels = 1,
6086};
6087
6088
6089static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6090{
6091 struct ieee80211_hw *hw = priv->hw;
6092 int i, rc;
6093
6094 rc = mwl8k_load_firmware(hw);
6095 mwl8k_release_firmware(priv);
6096 if (rc) {
6097 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6098 return rc;
6099 }
6100
6101 /*
6102 * Extra headroom is the size of the required DMA header
6103 * minus the size of the smallest 802.11 frame (CTS frame).
6104 */
6105 hw->extra_tx_headroom =
6106 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6107
6108 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6109
6110 hw->queues = MWL8K_TX_WMM_QUEUES;
6111
6112 /* Set rssi values to dBm */
6113 ieee80211_hw_set(hw, SIGNAL_DBM);
6114 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
6115
6116 /*
6117 * Ask mac80211 to not to trigger PS mode
6118 * based on PM bit of incoming frames.
6119 */
6120 if (priv->ap_fw)
6121 ieee80211_hw_set(hw, AP_LINK_PS);
6122
6123 hw->vif_data_size = sizeof(struct mwl8k_vif);
6124 hw->sta_data_size = sizeof(struct mwl8k_sta);
6125
6126 priv->macids_used = 0;
6127 INIT_LIST_HEAD(&priv->vif_list);
6128
6129 /* Set default radio state and preamble */
6130 priv->radio_on = false;
6131 priv->radio_short_preamble = false;
6132
6133 /* Finalize join worker */
6134 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6135 /* Handle watchdog ba events */
6136 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6137 /* To reload the firmware if it crashes */
6138 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6139
6140 /* TX reclaim and RX tasklets. */
6141 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll);
6142 tasklet_disable(&priv->poll_tx_task);
6143 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll);
6144 tasklet_disable(&priv->poll_rx_task);
6145
6146 /* Power management cookie */
6147 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4,
6148 &priv->cookie_dma, GFP_KERNEL);
6149 if (priv->cookie == NULL)
6150 return -ENOMEM;
6151
6152 mutex_init(&priv->fw_mutex);
6153 priv->fw_mutex_owner = NULL;
6154 priv->fw_mutex_depth = 0;
6155 priv->hostcmd_wait = NULL;
6156
6157 spin_lock_init(&priv->tx_lock);
6158
6159 spin_lock_init(&priv->stream_lock);
6160
6161 priv->tx_wait = NULL;
6162
6163 rc = mwl8k_probe_hw(hw);
6164 if (rc)
6165 goto err_free_cookie;
6166
6167 hw->wiphy->interface_modes = 0;
6168
6169 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6170 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6171 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6172 hw->wiphy->iface_combinations = &ap_if_comb;
6173 hw->wiphy->n_iface_combinations = 1;
6174 }
6175
6176 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6177 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6178
6179 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
6180
6181 rc = ieee80211_register_hw(hw);
6182 if (rc) {
6183 wiphy_err(hw->wiphy, "Cannot register device\n");
6184 goto err_unprobe_hw;
6185 }
6186
6187 return 0;
6188
6189err_unprobe_hw:
6190 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6191 mwl8k_txq_deinit(hw, i);
6192 mwl8k_rxq_deinit(hw, 0);
6193
6194err_free_cookie:
6195 if (priv->cookie != NULL)
6196 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie,
6197 priv->cookie_dma);
6198
6199 return rc;
6200}
6201static int mwl8k_probe(struct pci_dev *pdev,
6202 const struct pci_device_id *id)
6203{
6204 static int printed_version;
6205 struct ieee80211_hw *hw;
6206 struct mwl8k_priv *priv;
6207 struct mwl8k_device_info *di;
6208 int rc;
6209
6210 if (!printed_version) {
6211 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6212 printed_version = 1;
6213 }
6214
6215
6216 rc = pci_enable_device(pdev);
6217 if (rc) {
6218 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6219 MWL8K_NAME);
6220 return rc;
6221 }
6222
6223 rc = pci_request_regions(pdev, MWL8K_NAME);
6224 if (rc) {
6225 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6226 MWL8K_NAME);
6227 goto err_disable_device;
6228 }
6229
6230 pci_set_master(pdev);
6231
6232
6233 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6234 if (hw == NULL) {
6235 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6236 rc = -ENOMEM;
6237 goto err_free_reg;
6238 }
6239
6240 SET_IEEE80211_DEV(hw, &pdev->dev);
6241 pci_set_drvdata(pdev, hw);
6242
6243 priv = hw->priv;
6244 priv->hw = hw;
6245 priv->pdev = pdev;
6246 priv->device_info = &mwl8k_info_tbl[id->driver_data];
6247
6248 if (id->driver_data == MWL8764)
6249 priv->is_8764 = true;
6250
6251 priv->sram = pci_iomap(pdev, 0, 0x10000);
6252 if (priv->sram == NULL) {
6253 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6254 rc = -EIO;
6255 goto err_iounmap;
6256 }
6257
6258 /*
6259 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6260 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6261 */
6262 priv->regs = pci_iomap(pdev, 1, 0x10000);
6263 if (priv->regs == NULL) {
6264 priv->regs = pci_iomap(pdev, 2, 0x10000);
6265 if (priv->regs == NULL) {
6266 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6267 rc = -EIO;
6268 goto err_iounmap;
6269 }
6270 }
6271
6272 /*
6273 * Choose the initial fw image depending on user input. If a second
6274 * image is available, make it the alternative image that will be
6275 * loaded if the first one fails.
6276 */
6277 init_completion(&priv->firmware_loading_complete);
6278 di = priv->device_info;
6279 if (ap_mode_default && di->fw_image_ap) {
6280 priv->fw_pref = di->fw_image_ap;
6281 priv->fw_alt = di->fw_image_sta;
6282 } else if (!ap_mode_default && di->fw_image_sta) {
6283 priv->fw_pref = di->fw_image_sta;
6284 priv->fw_alt = di->fw_image_ap;
6285 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6286 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6287 priv->fw_pref = di->fw_image_sta;
6288 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6289 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6290 priv->fw_pref = di->fw_image_ap;
6291 }
6292 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6293 if (rc)
6294 goto err_stop_firmware;
6295
6296 priv->hw_restart_in_progress = false;
6297
6298 priv->running_bsses = 0;
6299
6300 return rc;
6301
6302err_stop_firmware:
6303 mwl8k_hw_reset(priv);
6304
6305err_iounmap:
6306 if (priv->regs != NULL)
6307 pci_iounmap(pdev, priv->regs);
6308
6309 if (priv->sram != NULL)
6310 pci_iounmap(pdev, priv->sram);
6311
6312 ieee80211_free_hw(hw);
6313
6314err_free_reg:
6315 pci_release_regions(pdev);
6316
6317err_disable_device:
6318 pci_disable_device(pdev);
6319
6320 return rc;
6321}
6322
6323static void mwl8k_remove(struct pci_dev *pdev)
6324{
6325 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6326 struct mwl8k_priv *priv;
6327 int i;
6328
6329 if (hw == NULL)
6330 return;
6331 priv = hw->priv;
6332
6333 wait_for_completion(&priv->firmware_loading_complete);
6334
6335 if (priv->fw_state == FW_STATE_ERROR) {
6336 mwl8k_hw_reset(priv);
6337 goto unmap;
6338 }
6339
6340 ieee80211_stop_queues(hw);
6341
6342 ieee80211_unregister_hw(hw);
6343
6344 /* Remove TX reclaim and RX tasklets. */
6345 tasklet_kill(&priv->poll_tx_task);
6346 tasklet_kill(&priv->poll_rx_task);
6347
6348 /* Stop hardware */
6349 mwl8k_hw_reset(priv);
6350
6351 /* Return all skbs to mac80211 */
6352 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6353 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6354
6355 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6356 mwl8k_txq_deinit(hw, i);
6357
6358 mwl8k_rxq_deinit(hw, 0);
6359
6360 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma);
6361
6362unmap:
6363 pci_iounmap(pdev, priv->regs);
6364 pci_iounmap(pdev, priv->sram);
6365 ieee80211_free_hw(hw);
6366 pci_release_regions(pdev);
6367 pci_disable_device(pdev);
6368}
6369
6370static struct pci_driver mwl8k_driver = {
6371 .name = MWL8K_NAME,
6372 .id_table = mwl8k_pci_id_table,
6373 .probe = mwl8k_probe,
6374 .remove = mwl8k_remove,
6375};
6376
6377module_pci_driver(mwl8k_driver);
6378
6379MODULE_DESCRIPTION(MWL8K_DESC);
6380MODULE_VERSION(MWL8K_VERSION);
6381MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6382MODULE_LICENSE("GPL");