Loading...
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 .tx = mwl8k_tx,
5614 .wake_tx_queue = ieee80211_handle_wake_tx_queue,
5615 .start = mwl8k_start,
5616 .stop = mwl8k_stop,
5617 .add_interface = mwl8k_add_interface,
5618 .remove_interface = mwl8k_remove_interface,
5619 .config = mwl8k_config,
5620 .bss_info_changed = mwl8k_bss_info_changed,
5621 .prepare_multicast = mwl8k_prepare_multicast,
5622 .configure_filter = mwl8k_configure_filter,
5623 .set_key = mwl8k_set_key,
5624 .set_rts_threshold = mwl8k_set_rts_threshold,
5625 .sta_add = mwl8k_sta_add,
5626 .sta_remove = mwl8k_sta_remove,
5627 .conf_tx = mwl8k_conf_tx,
5628 .get_stats = mwl8k_get_stats,
5629 .get_survey = mwl8k_get_survey,
5630 .ampdu_action = mwl8k_ampdu_action,
5631 .sw_scan_start = mwl8k_sw_scan_start,
5632 .sw_scan_complete = mwl8k_sw_scan_complete,
5633};
5634
5635static void mwl8k_finalize_join_worker(struct work_struct *work)
5636{
5637 struct mwl8k_priv *priv =
5638 container_of(work, struct mwl8k_priv, finalize_join_worker);
5639 struct sk_buff *skb = priv->beacon_skb;
5640 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5641 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5642 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5643 mgmt->u.beacon.variable, len);
5644 int dtim_period = 1;
5645
5646 if (tim && tim[1] >= 2)
5647 dtim_period = tim[3];
5648
5649 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5650
5651 dev_kfree_skb(skb);
5652 priv->beacon_skb = NULL;
5653}
5654
5655enum {
5656 MWL8363 = 0,
5657 MWL8687,
5658 MWL8366,
5659 MWL8764,
5660};
5661
5662#define MWL8K_8366_AP_FW_API 3
5663#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5664#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5665
5666#define MWL8K_8764_AP_FW_API 1
5667#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5668#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5669
5670static struct mwl8k_device_info mwl8k_info_tbl[] = {
5671 [MWL8363] = {
5672 .part_name = "88w8363",
5673 .helper_image = "mwl8k/helper_8363.fw",
5674 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5675 },
5676 [MWL8687] = {
5677 .part_name = "88w8687",
5678 .helper_image = "mwl8k/helper_8687.fw",
5679 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5680 },
5681 [MWL8366] = {
5682 .part_name = "88w8366",
5683 .helper_image = "mwl8k/helper_8366.fw",
5684 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5685 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5686 .fw_api_ap = MWL8K_8366_AP_FW_API,
5687 .ap_rxd_ops = &rxd_ap_ops,
5688 },
5689 [MWL8764] = {
5690 .part_name = "88w8764",
5691 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5692 .fw_api_ap = MWL8K_8764_AP_FW_API,
5693 .ap_rxd_ops = &rxd_ap_ops,
5694 },
5695};
5696
5697MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5698MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5699MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5700MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5701MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5702MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5703MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5704
5705static const struct pci_device_id mwl8k_pci_id_table[] = {
5706 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5707 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5708 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5709 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5710 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5711 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5712 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5713 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5714 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5715 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5716 { },
5717};
5718MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5719
5720static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5721{
5722 int rc;
5723 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5724 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5725 priv->fw_pref, priv->fw_alt);
5726 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5727 if (rc) {
5728 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5729 pci_name(priv->pdev), priv->fw_alt);
5730 return rc;
5731 }
5732 return 0;
5733}
5734
5735static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5736static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5737{
5738 struct mwl8k_priv *priv = context;
5739 struct mwl8k_device_info *di = priv->device_info;
5740 int rc;
5741
5742 switch (priv->fw_state) {
5743 case FW_STATE_INIT:
5744 if (!fw) {
5745 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5746 pci_name(priv->pdev), di->helper_image);
5747 goto fail;
5748 }
5749 priv->fw_helper = fw;
5750 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5751 true);
5752 if (rc && priv->fw_alt) {
5753 rc = mwl8k_request_alt_fw(priv);
5754 if (rc)
5755 goto fail;
5756 priv->fw_state = FW_STATE_LOADING_ALT;
5757 } else if (rc)
5758 goto fail;
5759 else
5760 priv->fw_state = FW_STATE_LOADING_PREF;
5761 break;
5762
5763 case FW_STATE_LOADING_PREF:
5764 if (!fw) {
5765 if (priv->fw_alt) {
5766 rc = mwl8k_request_alt_fw(priv);
5767 if (rc)
5768 goto fail;
5769 priv->fw_state = FW_STATE_LOADING_ALT;
5770 } else
5771 goto fail;
5772 } else {
5773 priv->fw_ucode = fw;
5774 rc = mwl8k_firmware_load_success(priv);
5775 if (rc)
5776 goto fail;
5777 else
5778 complete(&priv->firmware_loading_complete);
5779 }
5780 break;
5781
5782 case FW_STATE_LOADING_ALT:
5783 if (!fw) {
5784 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5785 pci_name(priv->pdev), di->helper_image);
5786 goto fail;
5787 }
5788 priv->fw_ucode = fw;
5789 rc = mwl8k_firmware_load_success(priv);
5790 if (rc)
5791 goto fail;
5792 else
5793 complete(&priv->firmware_loading_complete);
5794 break;
5795
5796 default:
5797 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5798 MWL8K_NAME, priv->fw_state);
5799 BUG_ON(1);
5800 }
5801
5802 return;
5803
5804fail:
5805 priv->fw_state = FW_STATE_ERROR;
5806 complete(&priv->firmware_loading_complete);
5807 mwl8k_release_firmware(priv);
5808 device_release_driver(&priv->pdev->dev);
5809}
5810
5811#define MAX_RESTART_ATTEMPTS 1
5812static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5813 bool nowait)
5814{
5815 struct mwl8k_priv *priv = hw->priv;
5816 int rc;
5817 int count = MAX_RESTART_ATTEMPTS;
5818
5819retry:
5820 /* Reset firmware and hardware */
5821 mwl8k_hw_reset(priv);
5822
5823 /* Ask userland hotplug daemon for the device firmware */
5824 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5825 if (rc) {
5826 wiphy_err(hw->wiphy, "Firmware files not found\n");
5827 return rc;
5828 }
5829
5830 if (nowait)
5831 return rc;
5832
5833 /* Load firmware into hardware */
5834 rc = mwl8k_load_firmware(hw);
5835 if (rc)
5836 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5837
5838 /* Reclaim memory once firmware is successfully loaded */
5839 mwl8k_release_firmware(priv);
5840
5841 if (rc && count) {
5842 /* FW did not start successfully;
5843 * lets try one more time
5844 */
5845 count--;
5846 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5847 msleep(20);
5848 goto retry;
5849 }
5850
5851 return rc;
5852}
5853
5854static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5855{
5856 struct mwl8k_priv *priv = hw->priv;
5857 int rc = 0;
5858 int i;
5859
5860 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5861 rc = mwl8k_txq_init(hw, i);
5862 if (rc)
5863 break;
5864 if (priv->ap_fw)
5865 iowrite32(priv->txq[i].txd_dma,
5866 priv->sram + priv->txq_offset[i]);
5867 }
5868 return rc;
5869}
5870
5871/* initialize hw after successfully loading a firmware image */
5872static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5873{
5874 struct mwl8k_priv *priv = hw->priv;
5875 int rc = 0;
5876 int i;
5877
5878 if (priv->ap_fw) {
5879 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5880 if (priv->rxd_ops == NULL) {
5881 wiphy_err(hw->wiphy,
5882 "Driver does not have AP firmware image support for this hardware\n");
5883 rc = -ENOENT;
5884 goto err_stop_firmware;
5885 }
5886 } else {
5887 priv->rxd_ops = &rxd_sta_ops;
5888 }
5889
5890 priv->sniffer_enabled = false;
5891 priv->wmm_enabled = false;
5892 priv->pending_tx_pkts = 0;
5893 atomic_set(&priv->watchdog_event_pending, 0);
5894
5895 rc = mwl8k_rxq_init(hw, 0);
5896 if (rc)
5897 goto err_stop_firmware;
5898 rxq_refill(hw, 0, INT_MAX);
5899
5900 /* For the sta firmware, we need to know the dma addresses of tx queues
5901 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5902 * prior to issuing this command. But for the AP case, we learn the
5903 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5904 * case we must initialize the tx queues after.
5905 */
5906 priv->num_ampdu_queues = 0;
5907 if (!priv->ap_fw) {
5908 rc = mwl8k_init_txqs(hw);
5909 if (rc)
5910 goto err_free_queues;
5911 }
5912
5913 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5914 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5915 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5916 MWL8K_A2H_INT_BA_WATCHDOG,
5917 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5918 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5919 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5920
5921 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5922 IRQF_SHARED, MWL8K_NAME, hw);
5923 if (rc) {
5924 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5925 goto err_free_queues;
5926 }
5927
5928 /*
5929 * When hw restart is requested,
5930 * mac80211 will take care of clearing
5931 * the ampdu streams, so do not clear
5932 * the ampdu state here
5933 */
5934 if (!priv->hw_restart_in_progress)
5935 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5936
5937 /*
5938 * Temporarily enable interrupts. Initial firmware host
5939 * commands use interrupts and avoid polling. Disable
5940 * interrupts when done.
5941 */
5942 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5943
5944 /* Get config data, mac addrs etc */
5945 if (priv->ap_fw) {
5946 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5947 if (!rc)
5948 rc = mwl8k_init_txqs(hw);
5949 if (!rc)
5950 rc = mwl8k_cmd_set_hw_spec(hw);
5951 } else {
5952 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5953 }
5954 if (rc) {
5955 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5956 goto err_free_irq;
5957 }
5958
5959 /* Turn radio off */
5960 rc = mwl8k_cmd_radio_disable(hw);
5961 if (rc) {
5962 wiphy_err(hw->wiphy, "Cannot disable\n");
5963 goto err_free_irq;
5964 }
5965
5966 /* Clear MAC address */
5967 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5968 if (rc) {
5969 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5970 goto err_free_irq;
5971 }
5972
5973 /* Configure Antennas */
5974 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5975 if (rc)
5976 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5977 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5978 if (rc)
5979 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5980
5981
5982 /* Disable interrupts */
5983 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5984 free_irq(priv->pdev->irq, hw);
5985
5986 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5987 priv->device_info->part_name,
5988 priv->hw_rev, hw->wiphy->perm_addr,
5989 priv->ap_fw ? "AP" : "STA",
5990 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5991 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5992
5993 return 0;
5994
5995err_free_irq:
5996 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5997 free_irq(priv->pdev->irq, hw);
5998
5999err_free_queues:
6000 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6001 mwl8k_txq_deinit(hw, i);
6002 mwl8k_rxq_deinit(hw, 0);
6003
6004err_stop_firmware:
6005 mwl8k_hw_reset(priv);
6006
6007 return rc;
6008}
6009
6010/*
6011 * invoke mwl8k_reload_firmware to change the firmware image after the device
6012 * has already been registered
6013 */
6014static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
6015{
6016 int i, rc = 0;
6017 struct mwl8k_priv *priv = hw->priv;
6018 struct mwl8k_vif *vif, *tmp_vif;
6019
6020 mwl8k_stop(hw);
6021 mwl8k_rxq_deinit(hw, 0);
6022
6023 /*
6024 * All the existing interfaces are re-added by the ieee80211_reconfig;
6025 * which means driver should remove existing interfaces before calling
6026 * ieee80211_restart_hw
6027 */
6028 if (priv->hw_restart_in_progress)
6029 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6030 mwl8k_remove_vif(priv, vif);
6031
6032 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6033 mwl8k_txq_deinit(hw, i);
6034
6035 rc = mwl8k_init_firmware(hw, fw_image, false);
6036 if (rc)
6037 goto fail;
6038
6039 rc = mwl8k_probe_hw(hw);
6040 if (rc)
6041 goto fail;
6042
6043 if (priv->hw_restart_in_progress)
6044 return rc;
6045
6046 rc = mwl8k_start(hw);
6047 if (rc)
6048 goto fail;
6049
6050 rc = mwl8k_config(hw, ~0);
6051 if (rc)
6052 goto fail;
6053
6054 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6055 rc = mwl8k_conf_tx(hw, NULL, 0, i, &priv->wmm_params[i]);
6056 if (rc)
6057 goto fail;
6058 }
6059
6060 return rc;
6061
6062fail:
6063 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6064 return rc;
6065}
6066
6067static const struct ieee80211_iface_limit ap_if_limits[] = {
6068 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
6069 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
6070};
6071
6072static const struct ieee80211_iface_combination ap_if_comb = {
6073 .limits = ap_if_limits,
6074 .n_limits = ARRAY_SIZE(ap_if_limits),
6075 .max_interfaces = 8,
6076 .num_different_channels = 1,
6077};
6078
6079
6080static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6081{
6082 struct ieee80211_hw *hw = priv->hw;
6083 int i, rc;
6084
6085 rc = mwl8k_load_firmware(hw);
6086 mwl8k_release_firmware(priv);
6087 if (rc) {
6088 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6089 return rc;
6090 }
6091
6092 /*
6093 * Extra headroom is the size of the required DMA header
6094 * minus the size of the smallest 802.11 frame (CTS frame).
6095 */
6096 hw->extra_tx_headroom =
6097 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6098
6099 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6100
6101 hw->queues = MWL8K_TX_WMM_QUEUES;
6102
6103 /* Set rssi values to dBm */
6104 ieee80211_hw_set(hw, SIGNAL_DBM);
6105 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
6106
6107 /*
6108 * Ask mac80211 to not to trigger PS mode
6109 * based on PM bit of incoming frames.
6110 */
6111 if (priv->ap_fw)
6112 ieee80211_hw_set(hw, AP_LINK_PS);
6113
6114 hw->vif_data_size = sizeof(struct mwl8k_vif);
6115 hw->sta_data_size = sizeof(struct mwl8k_sta);
6116
6117 priv->macids_used = 0;
6118 INIT_LIST_HEAD(&priv->vif_list);
6119
6120 /* Set default radio state and preamble */
6121 priv->radio_on = false;
6122 priv->radio_short_preamble = false;
6123
6124 /* Finalize join worker */
6125 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6126 /* Handle watchdog ba events */
6127 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6128 /* To reload the firmware if it crashes */
6129 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6130
6131 /* TX reclaim and RX tasklets. */
6132 tasklet_setup(&priv->poll_tx_task, mwl8k_tx_poll);
6133 tasklet_disable(&priv->poll_tx_task);
6134 tasklet_setup(&priv->poll_rx_task, mwl8k_rx_poll);
6135 tasklet_disable(&priv->poll_rx_task);
6136
6137 /* Power management cookie */
6138 priv->cookie = dma_alloc_coherent(&priv->pdev->dev, 4,
6139 &priv->cookie_dma, GFP_KERNEL);
6140 if (priv->cookie == NULL)
6141 return -ENOMEM;
6142
6143 mutex_init(&priv->fw_mutex);
6144 priv->fw_mutex_owner = NULL;
6145 priv->fw_mutex_depth = 0;
6146 priv->hostcmd_wait = NULL;
6147
6148 spin_lock_init(&priv->tx_lock);
6149
6150 spin_lock_init(&priv->stream_lock);
6151
6152 priv->tx_wait = NULL;
6153
6154 rc = mwl8k_probe_hw(hw);
6155 if (rc)
6156 goto err_free_cookie;
6157
6158 hw->wiphy->interface_modes = 0;
6159
6160 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6161 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6162 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6163 hw->wiphy->iface_combinations = &ap_if_comb;
6164 hw->wiphy->n_iface_combinations = 1;
6165 }
6166
6167 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6168 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6169
6170 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
6171
6172 rc = ieee80211_register_hw(hw);
6173 if (rc) {
6174 wiphy_err(hw->wiphy, "Cannot register device\n");
6175 goto err_unprobe_hw;
6176 }
6177
6178 return 0;
6179
6180err_unprobe_hw:
6181 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6182 mwl8k_txq_deinit(hw, i);
6183 mwl8k_rxq_deinit(hw, 0);
6184
6185err_free_cookie:
6186 if (priv->cookie != NULL)
6187 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie,
6188 priv->cookie_dma);
6189
6190 return rc;
6191}
6192static int mwl8k_probe(struct pci_dev *pdev,
6193 const struct pci_device_id *id)
6194{
6195 static int printed_version;
6196 struct ieee80211_hw *hw;
6197 struct mwl8k_priv *priv;
6198 struct mwl8k_device_info *di;
6199 int rc;
6200
6201 if (!printed_version) {
6202 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6203 printed_version = 1;
6204 }
6205
6206
6207 rc = pci_enable_device(pdev);
6208 if (rc) {
6209 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6210 MWL8K_NAME);
6211 return rc;
6212 }
6213
6214 rc = pci_request_regions(pdev, MWL8K_NAME);
6215 if (rc) {
6216 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6217 MWL8K_NAME);
6218 goto err_disable_device;
6219 }
6220
6221 pci_set_master(pdev);
6222
6223
6224 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6225 if (hw == NULL) {
6226 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6227 rc = -ENOMEM;
6228 goto err_free_reg;
6229 }
6230
6231 SET_IEEE80211_DEV(hw, &pdev->dev);
6232 pci_set_drvdata(pdev, hw);
6233
6234 priv = hw->priv;
6235 priv->hw = hw;
6236 priv->pdev = pdev;
6237 priv->device_info = &mwl8k_info_tbl[id->driver_data];
6238
6239 if (id->driver_data == MWL8764)
6240 priv->is_8764 = true;
6241
6242 priv->sram = pci_iomap(pdev, 0, 0x10000);
6243 if (priv->sram == NULL) {
6244 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6245 rc = -EIO;
6246 goto err_iounmap;
6247 }
6248
6249 /*
6250 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6251 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6252 */
6253 priv->regs = pci_iomap(pdev, 1, 0x10000);
6254 if (priv->regs == NULL) {
6255 priv->regs = pci_iomap(pdev, 2, 0x10000);
6256 if (priv->regs == NULL) {
6257 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6258 rc = -EIO;
6259 goto err_iounmap;
6260 }
6261 }
6262
6263 /*
6264 * Choose the initial fw image depending on user input. If a second
6265 * image is available, make it the alternative image that will be
6266 * loaded if the first one fails.
6267 */
6268 init_completion(&priv->firmware_loading_complete);
6269 di = priv->device_info;
6270 if (ap_mode_default && di->fw_image_ap) {
6271 priv->fw_pref = di->fw_image_ap;
6272 priv->fw_alt = di->fw_image_sta;
6273 } else if (!ap_mode_default && di->fw_image_sta) {
6274 priv->fw_pref = di->fw_image_sta;
6275 priv->fw_alt = di->fw_image_ap;
6276 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6277 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6278 priv->fw_pref = di->fw_image_sta;
6279 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6280 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6281 priv->fw_pref = di->fw_image_ap;
6282 }
6283 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6284 if (rc)
6285 goto err_stop_firmware;
6286
6287 priv->hw_restart_in_progress = false;
6288
6289 priv->running_bsses = 0;
6290
6291 return rc;
6292
6293err_stop_firmware:
6294 mwl8k_hw_reset(priv);
6295
6296err_iounmap:
6297 if (priv->regs != NULL)
6298 pci_iounmap(pdev, priv->regs);
6299
6300 if (priv->sram != NULL)
6301 pci_iounmap(pdev, priv->sram);
6302
6303 ieee80211_free_hw(hw);
6304
6305err_free_reg:
6306 pci_release_regions(pdev);
6307
6308err_disable_device:
6309 pci_disable_device(pdev);
6310
6311 return rc;
6312}
6313
6314static void mwl8k_remove(struct pci_dev *pdev)
6315{
6316 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6317 struct mwl8k_priv *priv;
6318 int i;
6319
6320 if (hw == NULL)
6321 return;
6322 priv = hw->priv;
6323
6324 wait_for_completion(&priv->firmware_loading_complete);
6325
6326 if (priv->fw_state == FW_STATE_ERROR) {
6327 mwl8k_hw_reset(priv);
6328 goto unmap;
6329 }
6330
6331 ieee80211_stop_queues(hw);
6332
6333 ieee80211_unregister_hw(hw);
6334
6335 /* Remove TX reclaim and RX tasklets. */
6336 tasklet_kill(&priv->poll_tx_task);
6337 tasklet_kill(&priv->poll_rx_task);
6338
6339 /* Stop hardware */
6340 mwl8k_hw_reset(priv);
6341
6342 /* Return all skbs to mac80211 */
6343 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6344 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6345
6346 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6347 mwl8k_txq_deinit(hw, i);
6348
6349 mwl8k_rxq_deinit(hw, 0);
6350
6351 dma_free_coherent(&priv->pdev->dev, 4, priv->cookie, priv->cookie_dma);
6352
6353unmap:
6354 pci_iounmap(pdev, priv->regs);
6355 pci_iounmap(pdev, priv->sram);
6356 ieee80211_free_hw(hw);
6357 pci_release_regions(pdev);
6358 pci_disable_device(pdev);
6359}
6360
6361static struct pci_driver mwl8k_driver = {
6362 .name = MWL8K_NAME,
6363 .id_table = mwl8k_pci_id_table,
6364 .probe = mwl8k_probe,
6365 .remove = mwl8k_remove,
6366};
6367
6368module_pci_driver(mwl8k_driver);
6369
6370MODULE_DESCRIPTION(MWL8K_DESC);
6371MODULE_VERSION(MWL8K_VERSION);
6372MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6373MODULE_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[4];
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 = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
350 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
351 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
352 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
353 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
354 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
355 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
356 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
357 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
358 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
359 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
360 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
361 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
362 { .band = IEEE80211_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 = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
383 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
384 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
385 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
386};
387
388static const struct ieee80211_rate mwl8k_rates_50[] = {
389 { .bitrate = 60, .hw_value = 12, },
390 { .bitrate = 90, .hw_value = 18, },
391 { .bitrate = 120, .hw_value = 24, },
392 { .bitrate = 180, .hw_value = 36, },
393 { .bitrate = 240, .hw_value = 48, },
394 { .bitrate = 360, .hw_value = 72, },
395 { .bitrate = 480, .hw_value = 96, },
396 { .bitrate = 540, .hw_value = 108, },
397};
398
399/* Set or get info from Firmware */
400#define MWL8K_CMD_GET 0x0000
401#define MWL8K_CMD_SET 0x0001
402#define MWL8K_CMD_SET_LIST 0x0002
403
404/* Firmware command codes */
405#define MWL8K_CMD_CODE_DNLD 0x0001
406#define MWL8K_CMD_GET_HW_SPEC 0x0003
407#define MWL8K_CMD_SET_HW_SPEC 0x0004
408#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
409#define MWL8K_CMD_GET_STAT 0x0014
410#define MWL8K_CMD_BBP_REG_ACCESS 0x001a
411#define MWL8K_CMD_RADIO_CONTROL 0x001c
412#define MWL8K_CMD_RF_TX_POWER 0x001e
413#define MWL8K_CMD_TX_POWER 0x001f
414#define MWL8K_CMD_RF_ANTENNA 0x0020
415#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
416#define MWL8K_CMD_SET_PRE_SCAN 0x0107
417#define MWL8K_CMD_SET_POST_SCAN 0x0108
418#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
419#define MWL8K_CMD_SET_AID 0x010d
420#define MWL8K_CMD_SET_RATE 0x0110
421#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
422#define MWL8K_CMD_RTS_THRESHOLD 0x0113
423#define MWL8K_CMD_SET_SLOT 0x0114
424#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
425#define MWL8K_CMD_SET_WMM_MODE 0x0123
426#define MWL8K_CMD_MIMO_CONFIG 0x0125
427#define MWL8K_CMD_USE_FIXED_RATE 0x0126
428#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
429#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
430#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
431#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
432#define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
433#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
434#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
435#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
436#define MWL8K_CMD_UPDATE_STADB 0x1123
437#define MWL8K_CMD_BASTREAM 0x1125
438
439static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
440{
441 u16 command = le16_to_cpu(cmd);
442
443#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
444 snprintf(buf, bufsize, "%s", #x);\
445 return buf;\
446 } while (0)
447 switch (command & ~0x8000) {
448 MWL8K_CMDNAME(CODE_DNLD);
449 MWL8K_CMDNAME(GET_HW_SPEC);
450 MWL8K_CMDNAME(SET_HW_SPEC);
451 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
452 MWL8K_CMDNAME(GET_STAT);
453 MWL8K_CMDNAME(RADIO_CONTROL);
454 MWL8K_CMDNAME(RF_TX_POWER);
455 MWL8K_CMDNAME(TX_POWER);
456 MWL8K_CMDNAME(RF_ANTENNA);
457 MWL8K_CMDNAME(SET_BEACON);
458 MWL8K_CMDNAME(SET_PRE_SCAN);
459 MWL8K_CMDNAME(SET_POST_SCAN);
460 MWL8K_CMDNAME(SET_RF_CHANNEL);
461 MWL8K_CMDNAME(SET_AID);
462 MWL8K_CMDNAME(SET_RATE);
463 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
464 MWL8K_CMDNAME(RTS_THRESHOLD);
465 MWL8K_CMDNAME(SET_SLOT);
466 MWL8K_CMDNAME(SET_EDCA_PARAMS);
467 MWL8K_CMDNAME(SET_WMM_MODE);
468 MWL8K_CMDNAME(MIMO_CONFIG);
469 MWL8K_CMDNAME(USE_FIXED_RATE);
470 MWL8K_CMDNAME(ENABLE_SNIFFER);
471 MWL8K_CMDNAME(SET_MAC_ADDR);
472 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
473 MWL8K_CMDNAME(BSS_START);
474 MWL8K_CMDNAME(SET_NEW_STN);
475 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
476 MWL8K_CMDNAME(UPDATE_STADB);
477 MWL8K_CMDNAME(BASTREAM);
478 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
479 default:
480 snprintf(buf, bufsize, "0x%x", cmd);
481 }
482#undef MWL8K_CMDNAME
483
484 return buf;
485}
486
487/* Hardware and firmware reset */
488static void mwl8k_hw_reset(struct mwl8k_priv *priv)
489{
490 iowrite32(MWL8K_H2A_INT_RESET,
491 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
492 iowrite32(MWL8K_H2A_INT_RESET,
493 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
494 msleep(20);
495}
496
497/* Release fw image */
498static void mwl8k_release_fw(const struct firmware **fw)
499{
500 if (*fw == NULL)
501 return;
502 release_firmware(*fw);
503 *fw = NULL;
504}
505
506static void mwl8k_release_firmware(struct mwl8k_priv *priv)
507{
508 mwl8k_release_fw(&priv->fw_ucode);
509 mwl8k_release_fw(&priv->fw_helper);
510}
511
512/* states for asynchronous f/w loading */
513static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
514enum {
515 FW_STATE_INIT = 0,
516 FW_STATE_LOADING_PREF,
517 FW_STATE_LOADING_ALT,
518 FW_STATE_ERROR,
519};
520
521/* Request fw image */
522static int mwl8k_request_fw(struct mwl8k_priv *priv,
523 const char *fname, const struct firmware **fw,
524 bool nowait)
525{
526 /* release current image */
527 if (*fw != NULL)
528 mwl8k_release_fw(fw);
529
530 if (nowait)
531 return request_firmware_nowait(THIS_MODULE, 1, fname,
532 &priv->pdev->dev, GFP_KERNEL,
533 priv, mwl8k_fw_state_machine);
534 else
535 return request_firmware(fw, fname, &priv->pdev->dev);
536}
537
538static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
539 bool nowait)
540{
541 struct mwl8k_device_info *di = priv->device_info;
542 int rc;
543
544 if (di->helper_image != NULL) {
545 if (nowait)
546 rc = mwl8k_request_fw(priv, di->helper_image,
547 &priv->fw_helper, true);
548 else
549 rc = mwl8k_request_fw(priv, di->helper_image,
550 &priv->fw_helper, false);
551 if (rc)
552 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
553 pci_name(priv->pdev), di->helper_image);
554
555 if (rc || nowait)
556 return rc;
557 }
558
559 if (nowait) {
560 /*
561 * if we get here, no helper image is needed. Skip the
562 * FW_STATE_INIT state.
563 */
564 priv->fw_state = FW_STATE_LOADING_PREF;
565 rc = mwl8k_request_fw(priv, fw_image,
566 &priv->fw_ucode,
567 true);
568 } else
569 rc = mwl8k_request_fw(priv, fw_image,
570 &priv->fw_ucode, false);
571 if (rc) {
572 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
573 pci_name(priv->pdev), fw_image);
574 mwl8k_release_fw(&priv->fw_helper);
575 return rc;
576 }
577
578 return 0;
579}
580
581struct mwl8k_cmd_pkt {
582 __le16 code;
583 __le16 length;
584 __u8 seq_num;
585 __u8 macid;
586 __le16 result;
587 char payload[0];
588} __packed;
589
590/*
591 * Firmware loading.
592 */
593static int
594mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
595{
596 void __iomem *regs = priv->regs;
597 dma_addr_t dma_addr;
598 int loops;
599
600 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
601 if (pci_dma_mapping_error(priv->pdev, dma_addr))
602 return -ENOMEM;
603
604 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
605 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
606 iowrite32(MWL8K_H2A_INT_DOORBELL,
607 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
608 iowrite32(MWL8K_H2A_INT_DUMMY,
609 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
610
611 loops = 1000;
612 do {
613 u32 int_code;
614 if (priv->is_8764) {
615 int_code = ioread32(regs +
616 MWL8K_HIU_H2A_INTERRUPT_STATUS);
617 if (int_code == 0)
618 break;
619 } else {
620 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
621 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
622 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
623 break;
624 }
625 }
626 cond_resched();
627 udelay(1);
628 } while (--loops);
629
630 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
631
632 return loops ? 0 : -ETIMEDOUT;
633}
634
635static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
636 const u8 *data, size_t length)
637{
638 struct mwl8k_cmd_pkt *cmd;
639 int done;
640 int rc = 0;
641
642 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
643 if (cmd == NULL)
644 return -ENOMEM;
645
646 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
647 cmd->seq_num = 0;
648 cmd->macid = 0;
649 cmd->result = 0;
650
651 done = 0;
652 while (length) {
653 int block_size = length > 256 ? 256 : length;
654
655 memcpy(cmd->payload, data + done, block_size);
656 cmd->length = cpu_to_le16(block_size);
657
658 rc = mwl8k_send_fw_load_cmd(priv, cmd,
659 sizeof(*cmd) + block_size);
660 if (rc)
661 break;
662
663 done += block_size;
664 length -= block_size;
665 }
666
667 if (!rc) {
668 cmd->length = 0;
669 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
670 }
671
672 kfree(cmd);
673
674 return rc;
675}
676
677static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
678 const u8 *data, size_t length)
679{
680 unsigned char *buffer;
681 int may_continue, rc = 0;
682 u32 done, prev_block_size;
683
684 buffer = kmalloc(1024, GFP_KERNEL);
685 if (buffer == NULL)
686 return -ENOMEM;
687
688 done = 0;
689 prev_block_size = 0;
690 may_continue = 1000;
691 while (may_continue > 0) {
692 u32 block_size;
693
694 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
695 if (block_size & 1) {
696 block_size &= ~1;
697 may_continue--;
698 } else {
699 done += prev_block_size;
700 length -= prev_block_size;
701 }
702
703 if (block_size > 1024 || block_size > length) {
704 rc = -EOVERFLOW;
705 break;
706 }
707
708 if (length == 0) {
709 rc = 0;
710 break;
711 }
712
713 if (block_size == 0) {
714 rc = -EPROTO;
715 may_continue--;
716 udelay(1);
717 continue;
718 }
719
720 prev_block_size = block_size;
721 memcpy(buffer, data + done, block_size);
722
723 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
724 if (rc)
725 break;
726 }
727
728 if (!rc && length != 0)
729 rc = -EREMOTEIO;
730
731 kfree(buffer);
732
733 return rc;
734}
735
736static int mwl8k_load_firmware(struct ieee80211_hw *hw)
737{
738 struct mwl8k_priv *priv = hw->priv;
739 const struct firmware *fw = priv->fw_ucode;
740 int rc;
741 int loops;
742
743 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
744 const struct firmware *helper = priv->fw_helper;
745
746 if (helper == NULL) {
747 printk(KERN_ERR "%s: helper image needed but none "
748 "given\n", pci_name(priv->pdev));
749 return -EINVAL;
750 }
751
752 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
753 if (rc) {
754 printk(KERN_ERR "%s: unable to load firmware "
755 "helper image\n", pci_name(priv->pdev));
756 return rc;
757 }
758 msleep(20);
759
760 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
761 } else {
762 if (priv->is_8764)
763 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
764 else
765 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
766 }
767
768 if (rc) {
769 printk(KERN_ERR "%s: unable to load firmware image\n",
770 pci_name(priv->pdev));
771 return rc;
772 }
773
774 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
775
776 loops = 500000;
777 do {
778 u32 ready_code;
779
780 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
781 if (ready_code == MWL8K_FWAP_READY) {
782 priv->ap_fw = true;
783 break;
784 } else if (ready_code == MWL8K_FWSTA_READY) {
785 priv->ap_fw = false;
786 break;
787 }
788
789 cond_resched();
790 udelay(1);
791 } while (--loops);
792
793 return loops ? 0 : -ETIMEDOUT;
794}
795
796
797/* DMA header used by firmware and hardware. */
798struct mwl8k_dma_data {
799 __le16 fwlen;
800 struct ieee80211_hdr wh;
801 char data[0];
802} __packed;
803
804/* Routines to add/remove DMA header from skb. */
805static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
806{
807 struct mwl8k_dma_data *tr;
808 int hdrlen;
809
810 tr = (struct mwl8k_dma_data *)skb->data;
811 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
812
813 if (hdrlen != sizeof(tr->wh)) {
814 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
815 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
816 *((__le16 *)(tr->data - 2)) = qos;
817 } else {
818 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
819 }
820 }
821
822 if (hdrlen != sizeof(*tr))
823 skb_pull(skb, sizeof(*tr) - hdrlen);
824}
825
826#define REDUCED_TX_HEADROOM 8
827
828static void
829mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
830 int head_pad, int tail_pad)
831{
832 struct ieee80211_hdr *wh;
833 int hdrlen;
834 int reqd_hdrlen;
835 struct mwl8k_dma_data *tr;
836
837 /*
838 * Add a firmware DMA header; the firmware requires that we
839 * present a 2-byte payload length followed by a 4-address
840 * header (without QoS field), followed (optionally) by any
841 * WEP/ExtIV header (but only filled in for CCMP).
842 */
843 wh = (struct ieee80211_hdr *)skb->data;
844
845 hdrlen = ieee80211_hdrlen(wh->frame_control);
846
847 /*
848 * Check if skb_resize is required because of
849 * tx_headroom adjustment.
850 */
851 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
852 + REDUCED_TX_HEADROOM))) {
853 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
854
855 wiphy_err(priv->hw->wiphy,
856 "Failed to reallocate TX buffer\n");
857 return;
858 }
859 skb->truesize += REDUCED_TX_HEADROOM;
860 }
861
862 reqd_hdrlen = sizeof(*tr) + head_pad;
863
864 if (hdrlen != reqd_hdrlen)
865 skb_push(skb, reqd_hdrlen - hdrlen);
866
867 if (ieee80211_is_data_qos(wh->frame_control))
868 hdrlen -= IEEE80211_QOS_CTL_LEN;
869
870 tr = (struct mwl8k_dma_data *)skb->data;
871 if (wh != &tr->wh)
872 memmove(&tr->wh, wh, hdrlen);
873 if (hdrlen != sizeof(tr->wh))
874 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
875
876 /*
877 * Firmware length is the length of the fully formed "802.11
878 * payload". That is, everything except for the 802.11 header.
879 * This includes all crypto material including the MIC.
880 */
881 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
882}
883
884static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
885 struct sk_buff *skb)
886{
887 struct ieee80211_hdr *wh;
888 struct ieee80211_tx_info *tx_info;
889 struct ieee80211_key_conf *key_conf;
890 int data_pad;
891 int head_pad = 0;
892
893 wh = (struct ieee80211_hdr *)skb->data;
894
895 tx_info = IEEE80211_SKB_CB(skb);
896
897 key_conf = NULL;
898 if (ieee80211_is_data(wh->frame_control))
899 key_conf = tx_info->control.hw_key;
900
901 /*
902 * Make sure the packet header is in the DMA header format (4-address
903 * without QoS), and add head & tail padding when HW crypto is enabled.
904 *
905 * We have the following trailer padding requirements:
906 * - WEP: 4 trailer bytes (ICV)
907 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
908 * - CCMP: 8 trailer bytes (MIC)
909 */
910 data_pad = 0;
911 if (key_conf != NULL) {
912 head_pad = key_conf->iv_len;
913 switch (key_conf->cipher) {
914 case WLAN_CIPHER_SUITE_WEP40:
915 case WLAN_CIPHER_SUITE_WEP104:
916 data_pad = 4;
917 break;
918 case WLAN_CIPHER_SUITE_TKIP:
919 data_pad = 12;
920 break;
921 case WLAN_CIPHER_SUITE_CCMP:
922 data_pad = 8;
923 break;
924 }
925 }
926 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
927}
928
929/*
930 * Packet reception for 88w8366/88w8764 AP firmware.
931 */
932struct mwl8k_rxd_ap {
933 __le16 pkt_len;
934 __u8 sq2;
935 __u8 rate;
936 __le32 pkt_phys_addr;
937 __le32 next_rxd_phys_addr;
938 __le16 qos_control;
939 __le16 htsig2;
940 __le32 hw_rssi_info;
941 __le32 hw_noise_floor_info;
942 __u8 noise_floor;
943 __u8 pad0[3];
944 __u8 rssi;
945 __u8 rx_status;
946 __u8 channel;
947 __u8 rx_ctrl;
948} __packed;
949
950#define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
951#define MWL8K_AP_RATE_INFO_40MHZ 0x40
952#define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
953
954#define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
955
956/* 8366/8764 AP rx_status bits */
957#define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
958#define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
959#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
960#define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
961#define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
962
963static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
964{
965 struct mwl8k_rxd_ap *rxd = _rxd;
966
967 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
968 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
969}
970
971static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
972{
973 struct mwl8k_rxd_ap *rxd = _rxd;
974
975 rxd->pkt_len = cpu_to_le16(len);
976 rxd->pkt_phys_addr = cpu_to_le32(addr);
977 wmb();
978 rxd->rx_ctrl = 0;
979}
980
981static int
982mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
983 __le16 *qos, s8 *noise)
984{
985 struct mwl8k_rxd_ap *rxd = _rxd;
986
987 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
988 return -1;
989 rmb();
990
991 memset(status, 0, sizeof(*status));
992
993 status->signal = -rxd->rssi;
994 *noise = -rxd->noise_floor;
995
996 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
997 status->flag |= RX_FLAG_HT;
998 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
999 status->flag |= RX_FLAG_40MHZ;
1000 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
1001 } else {
1002 int i;
1003
1004 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
1005 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
1006 status->rate_idx = i;
1007 break;
1008 }
1009 }
1010 }
1011
1012 if (rxd->channel > 14) {
1013 status->band = IEEE80211_BAND_5GHZ;
1014 if (!(status->flag & RX_FLAG_HT))
1015 status->rate_idx -= 5;
1016 } else {
1017 status->band = IEEE80211_BAND_2GHZ;
1018 }
1019 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1020 status->band);
1021
1022 *qos = rxd->qos_control;
1023
1024 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1025 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1026 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1027 status->flag |= RX_FLAG_MMIC_ERROR;
1028
1029 return le16_to_cpu(rxd->pkt_len);
1030}
1031
1032static struct rxd_ops rxd_ap_ops = {
1033 .rxd_size = sizeof(struct mwl8k_rxd_ap),
1034 .rxd_init = mwl8k_rxd_ap_init,
1035 .rxd_refill = mwl8k_rxd_ap_refill,
1036 .rxd_process = mwl8k_rxd_ap_process,
1037};
1038
1039/*
1040 * Packet reception for STA firmware.
1041 */
1042struct mwl8k_rxd_sta {
1043 __le16 pkt_len;
1044 __u8 link_quality;
1045 __u8 noise_level;
1046 __le32 pkt_phys_addr;
1047 __le32 next_rxd_phys_addr;
1048 __le16 qos_control;
1049 __le16 rate_info;
1050 __le32 pad0[4];
1051 __u8 rssi;
1052 __u8 channel;
1053 __le16 pad1;
1054 __u8 rx_ctrl;
1055 __u8 rx_status;
1056 __u8 pad2[2];
1057} __packed;
1058
1059#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1060#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1061#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1062#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1063#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1064#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1065
1066#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1067#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1068/* ICV=0 or MIC=1 */
1069#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1070/* Key is uploaded only in failure case */
1071#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1072
1073static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1074{
1075 struct mwl8k_rxd_sta *rxd = _rxd;
1076
1077 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1078 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1079}
1080
1081static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1082{
1083 struct mwl8k_rxd_sta *rxd = _rxd;
1084
1085 rxd->pkt_len = cpu_to_le16(len);
1086 rxd->pkt_phys_addr = cpu_to_le32(addr);
1087 wmb();
1088 rxd->rx_ctrl = 0;
1089}
1090
1091static int
1092mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1093 __le16 *qos, s8 *noise)
1094{
1095 struct mwl8k_rxd_sta *rxd = _rxd;
1096 u16 rate_info;
1097
1098 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1099 return -1;
1100 rmb();
1101
1102 rate_info = le16_to_cpu(rxd->rate_info);
1103
1104 memset(status, 0, sizeof(*status));
1105
1106 status->signal = -rxd->rssi;
1107 *noise = -rxd->noise_level;
1108 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1109 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1110
1111 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1112 status->flag |= RX_FLAG_SHORTPRE;
1113 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1114 status->flag |= RX_FLAG_40MHZ;
1115 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1116 status->flag |= RX_FLAG_SHORT_GI;
1117 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1118 status->flag |= RX_FLAG_HT;
1119
1120 if (rxd->channel > 14) {
1121 status->band = IEEE80211_BAND_5GHZ;
1122 if (!(status->flag & RX_FLAG_HT))
1123 status->rate_idx -= 5;
1124 } else {
1125 status->band = IEEE80211_BAND_2GHZ;
1126 }
1127 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1128 status->band);
1129
1130 *qos = rxd->qos_control;
1131 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1132 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1133 status->flag |= RX_FLAG_MMIC_ERROR;
1134
1135 return le16_to_cpu(rxd->pkt_len);
1136}
1137
1138static struct rxd_ops rxd_sta_ops = {
1139 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1140 .rxd_init = mwl8k_rxd_sta_init,
1141 .rxd_refill = mwl8k_rxd_sta_refill,
1142 .rxd_process = mwl8k_rxd_sta_process,
1143};
1144
1145
1146#define MWL8K_RX_DESCS 256
1147#define MWL8K_RX_MAXSZ 3800
1148
1149static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1150{
1151 struct mwl8k_priv *priv = hw->priv;
1152 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1153 int size;
1154 int i;
1155
1156 rxq->rxd_count = 0;
1157 rxq->head = 0;
1158 rxq->tail = 0;
1159
1160 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1161
1162 rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1163 if (rxq->rxd == NULL) {
1164 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1165 return -ENOMEM;
1166 }
1167
1168 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1169 if (rxq->buf == NULL) {
1170 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1171 return -ENOMEM;
1172 }
1173
1174 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1175 int desc_size;
1176 void *rxd;
1177 int nexti;
1178 dma_addr_t next_dma_addr;
1179
1180 desc_size = priv->rxd_ops->rxd_size;
1181 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1182
1183 nexti = i + 1;
1184 if (nexti == MWL8K_RX_DESCS)
1185 nexti = 0;
1186 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1187
1188 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1189 }
1190
1191 return 0;
1192}
1193
1194static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1195{
1196 struct mwl8k_priv *priv = hw->priv;
1197 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1198 int refilled;
1199
1200 refilled = 0;
1201 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1202 struct sk_buff *skb;
1203 dma_addr_t addr;
1204 int rx;
1205 void *rxd;
1206
1207 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1208 if (skb == NULL)
1209 break;
1210
1211 addr = pci_map_single(priv->pdev, skb->data,
1212 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1213
1214 rxq->rxd_count++;
1215 rx = rxq->tail++;
1216 if (rxq->tail == MWL8K_RX_DESCS)
1217 rxq->tail = 0;
1218 rxq->buf[rx].skb = skb;
1219 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1220
1221 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1222 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1223
1224 refilled++;
1225 }
1226
1227 return refilled;
1228}
1229
1230/* Must be called only when the card's reception is completely halted */
1231static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1232{
1233 struct mwl8k_priv *priv = hw->priv;
1234 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1235 int i;
1236
1237 if (rxq->rxd == NULL)
1238 return;
1239
1240 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1241 if (rxq->buf[i].skb != NULL) {
1242 pci_unmap_single(priv->pdev,
1243 dma_unmap_addr(&rxq->buf[i], dma),
1244 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1245 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1246
1247 kfree_skb(rxq->buf[i].skb);
1248 rxq->buf[i].skb = NULL;
1249 }
1250 }
1251
1252 kfree(rxq->buf);
1253 rxq->buf = NULL;
1254
1255 pci_free_consistent(priv->pdev,
1256 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1257 rxq->rxd, rxq->rxd_dma);
1258 rxq->rxd = NULL;
1259}
1260
1261
1262/*
1263 * Scan a list of BSSIDs to process for finalize join.
1264 * Allows for extension to process multiple BSSIDs.
1265 */
1266static inline int
1267mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1268{
1269 return priv->capture_beacon &&
1270 ieee80211_is_beacon(wh->frame_control) &&
1271 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
1272}
1273
1274static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1275 struct sk_buff *skb)
1276{
1277 struct mwl8k_priv *priv = hw->priv;
1278
1279 priv->capture_beacon = false;
1280 eth_zero_addr(priv->capture_bssid);
1281
1282 /*
1283 * Use GFP_ATOMIC as rxq_process is called from
1284 * the primary interrupt handler, memory allocation call
1285 * must not sleep.
1286 */
1287 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1288 if (priv->beacon_skb != NULL)
1289 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1290}
1291
1292static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1293 u8 *bssid)
1294{
1295 struct mwl8k_vif *mwl8k_vif;
1296
1297 list_for_each_entry(mwl8k_vif,
1298 vif_list, list) {
1299 if (memcmp(bssid, mwl8k_vif->bssid,
1300 ETH_ALEN) == 0)
1301 return mwl8k_vif;
1302 }
1303
1304 return NULL;
1305}
1306
1307static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1308{
1309 struct mwl8k_priv *priv = hw->priv;
1310 struct mwl8k_vif *mwl8k_vif = NULL;
1311 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1312 int processed;
1313
1314 processed = 0;
1315 while (rxq->rxd_count && limit--) {
1316 struct sk_buff *skb;
1317 void *rxd;
1318 int pkt_len;
1319 struct ieee80211_rx_status status;
1320 struct ieee80211_hdr *wh;
1321 __le16 qos;
1322
1323 skb = rxq->buf[rxq->head].skb;
1324 if (skb == NULL)
1325 break;
1326
1327 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1328
1329 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1330 &priv->noise);
1331 if (pkt_len < 0)
1332 break;
1333
1334 rxq->buf[rxq->head].skb = NULL;
1335
1336 pci_unmap_single(priv->pdev,
1337 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1338 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1339 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1340
1341 rxq->head++;
1342 if (rxq->head == MWL8K_RX_DESCS)
1343 rxq->head = 0;
1344
1345 rxq->rxd_count--;
1346
1347 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1348
1349 /*
1350 * Check for a pending join operation. Save a
1351 * copy of the beacon and schedule a tasklet to
1352 * send a FINALIZE_JOIN command to the firmware.
1353 */
1354 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1355 mwl8k_save_beacon(hw, skb);
1356
1357 if (ieee80211_has_protected(wh->frame_control)) {
1358
1359 /* Check if hw crypto has been enabled for
1360 * this bss. If yes, set the status flags
1361 * accordingly
1362 */
1363 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1364 wh->addr1);
1365
1366 if (mwl8k_vif != NULL &&
1367 mwl8k_vif->is_hw_crypto_enabled) {
1368 /*
1369 * When MMIC ERROR is encountered
1370 * by the firmware, payload is
1371 * dropped and only 32 bytes of
1372 * mwl8k Firmware header is sent
1373 * to the host.
1374 *
1375 * We need to add four bytes of
1376 * key information. In it
1377 * MAC80211 expects keyidx set to
1378 * 0 for triggering Counter
1379 * Measure of MMIC failure.
1380 */
1381 if (status.flag & RX_FLAG_MMIC_ERROR) {
1382 struct mwl8k_dma_data *tr;
1383 tr = (struct mwl8k_dma_data *)skb->data;
1384 memset((void *)&(tr->data), 0, 4);
1385 pkt_len += 4;
1386 }
1387
1388 if (!ieee80211_is_auth(wh->frame_control))
1389 status.flag |= RX_FLAG_IV_STRIPPED |
1390 RX_FLAG_DECRYPTED |
1391 RX_FLAG_MMIC_STRIPPED;
1392 }
1393 }
1394
1395 skb_put(skb, pkt_len);
1396 mwl8k_remove_dma_header(skb, qos);
1397 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1398 ieee80211_rx_irqsafe(hw, skb);
1399
1400 processed++;
1401 }
1402
1403 return processed;
1404}
1405
1406
1407/*
1408 * Packet transmission.
1409 */
1410
1411#define MWL8K_TXD_STATUS_OK 0x00000001
1412#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1413#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1414#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1415#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1416
1417#define MWL8K_QOS_QLEN_UNSPEC 0xff00
1418#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1419#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1420#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1421#define MWL8K_QOS_EOSP 0x0010
1422
1423struct mwl8k_tx_desc {
1424 __le32 status;
1425 __u8 data_rate;
1426 __u8 tx_priority;
1427 __le16 qos_control;
1428 __le32 pkt_phys_addr;
1429 __le16 pkt_len;
1430 __u8 dest_MAC_addr[ETH_ALEN];
1431 __le32 next_txd_phys_addr;
1432 __le32 timestamp;
1433 __le16 rate_info;
1434 __u8 peer_id;
1435 __u8 tx_frag_cnt;
1436} __packed;
1437
1438#define MWL8K_TX_DESCS 128
1439
1440static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1441{
1442 struct mwl8k_priv *priv = hw->priv;
1443 struct mwl8k_tx_queue *txq = priv->txq + index;
1444 int size;
1445 int i;
1446
1447 txq->len = 0;
1448 txq->head = 0;
1449 txq->tail = 0;
1450
1451 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1452
1453 txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma);
1454 if (txq->txd == NULL) {
1455 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1456 return -ENOMEM;
1457 }
1458
1459 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1460 if (txq->skb == NULL) {
1461 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1462 return -ENOMEM;
1463 }
1464
1465 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1466 struct mwl8k_tx_desc *tx_desc;
1467 int nexti;
1468
1469 tx_desc = txq->txd + i;
1470 nexti = (i + 1) % MWL8K_TX_DESCS;
1471
1472 tx_desc->status = 0;
1473 tx_desc->next_txd_phys_addr =
1474 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1475 }
1476
1477 return 0;
1478}
1479
1480static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1481{
1482 iowrite32(MWL8K_H2A_INT_PPA_READY,
1483 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1484 iowrite32(MWL8K_H2A_INT_DUMMY,
1485 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1486 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1487}
1488
1489static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1490{
1491 struct mwl8k_priv *priv = hw->priv;
1492 int i;
1493
1494 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1495 struct mwl8k_tx_queue *txq = priv->txq + i;
1496 int fw_owned = 0;
1497 int drv_owned = 0;
1498 int unused = 0;
1499 int desc;
1500
1501 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1502 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1503 u32 status;
1504
1505 status = le32_to_cpu(tx_desc->status);
1506 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1507 fw_owned++;
1508 else
1509 drv_owned++;
1510
1511 if (tx_desc->pkt_len == 0)
1512 unused++;
1513 }
1514
1515 wiphy_err(hw->wiphy,
1516 "txq[%d] len=%d head=%d tail=%d "
1517 "fw_owned=%d drv_owned=%d unused=%d\n",
1518 i,
1519 txq->len, txq->head, txq->tail,
1520 fw_owned, drv_owned, unused);
1521 }
1522}
1523
1524/*
1525 * Must be called with priv->fw_mutex held and tx queues stopped.
1526 */
1527#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1528
1529static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1530{
1531 struct mwl8k_priv *priv = hw->priv;
1532 DECLARE_COMPLETION_ONSTACK(tx_wait);
1533 int retry;
1534 int rc;
1535
1536 might_sleep();
1537
1538 /* Since fw restart is in progress, allow only the firmware
1539 * commands from the restart code and block the other
1540 * commands since they are going to fail in any case since
1541 * the firmware has crashed
1542 */
1543 if (priv->hw_restart_in_progress) {
1544 if (priv->hw_restart_owner == current)
1545 return 0;
1546 else
1547 return -EBUSY;
1548 }
1549
1550 if (atomic_read(&priv->watchdog_event_pending))
1551 return 0;
1552
1553 /*
1554 * The TX queues are stopped at this point, so this test
1555 * doesn't need to take ->tx_lock.
1556 */
1557 if (!priv->pending_tx_pkts)
1558 return 0;
1559
1560 retry = 1;
1561 rc = 0;
1562
1563 spin_lock_bh(&priv->tx_lock);
1564 priv->tx_wait = &tx_wait;
1565 while (!rc) {
1566 int oldcount;
1567 unsigned long timeout;
1568
1569 oldcount = priv->pending_tx_pkts;
1570
1571 spin_unlock_bh(&priv->tx_lock);
1572 timeout = wait_for_completion_timeout(&tx_wait,
1573 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1574
1575 if (atomic_read(&priv->watchdog_event_pending)) {
1576 spin_lock_bh(&priv->tx_lock);
1577 priv->tx_wait = NULL;
1578 spin_unlock_bh(&priv->tx_lock);
1579 return 0;
1580 }
1581
1582 spin_lock_bh(&priv->tx_lock);
1583
1584 if (timeout || !priv->pending_tx_pkts) {
1585 WARN_ON(priv->pending_tx_pkts);
1586 if (retry)
1587 wiphy_notice(hw->wiphy, "tx rings drained\n");
1588 break;
1589 }
1590
1591 if (retry) {
1592 mwl8k_tx_start(priv);
1593 retry = 0;
1594 continue;
1595 }
1596
1597 if (priv->pending_tx_pkts < oldcount) {
1598 wiphy_notice(hw->wiphy,
1599 "waiting for tx rings to drain (%d -> %d pkts)\n",
1600 oldcount, priv->pending_tx_pkts);
1601 retry = 1;
1602 continue;
1603 }
1604
1605 priv->tx_wait = NULL;
1606
1607 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1608 MWL8K_TX_WAIT_TIMEOUT_MS);
1609 mwl8k_dump_tx_rings(hw);
1610 priv->hw_restart_in_progress = true;
1611 ieee80211_queue_work(hw, &priv->fw_reload);
1612
1613 rc = -ETIMEDOUT;
1614 }
1615 priv->tx_wait = NULL;
1616 spin_unlock_bh(&priv->tx_lock);
1617
1618 return rc;
1619}
1620
1621#define MWL8K_TXD_SUCCESS(status) \
1622 ((status) & (MWL8K_TXD_STATUS_OK | \
1623 MWL8K_TXD_STATUS_OK_RETRY | \
1624 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1625
1626static int mwl8k_tid_queue_mapping(u8 tid)
1627{
1628 BUG_ON(tid > 7);
1629
1630 switch (tid) {
1631 case 0:
1632 case 3:
1633 return IEEE80211_AC_BE;
1634 case 1:
1635 case 2:
1636 return IEEE80211_AC_BK;
1637 case 4:
1638 case 5:
1639 return IEEE80211_AC_VI;
1640 case 6:
1641 case 7:
1642 return IEEE80211_AC_VO;
1643 default:
1644 return -1;
1645 }
1646}
1647
1648/* The firmware will fill in the rate information
1649 * for each packet that gets queued in the hardware
1650 * and these macros will interpret that info.
1651 */
1652
1653#define RI_FORMAT(a) (a & 0x0001)
1654#define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1655
1656static int
1657mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1658{
1659 struct mwl8k_priv *priv = hw->priv;
1660 struct mwl8k_tx_queue *txq = priv->txq + index;
1661 int processed;
1662
1663 processed = 0;
1664 while (txq->len > 0 && limit--) {
1665 int tx;
1666 struct mwl8k_tx_desc *tx_desc;
1667 unsigned long addr;
1668 int size;
1669 struct sk_buff *skb;
1670 struct ieee80211_tx_info *info;
1671 u32 status;
1672 struct ieee80211_sta *sta;
1673 struct mwl8k_sta *sta_info = NULL;
1674 u16 rate_info;
1675 struct ieee80211_hdr *wh;
1676
1677 tx = txq->head;
1678 tx_desc = txq->txd + tx;
1679
1680 status = le32_to_cpu(tx_desc->status);
1681
1682 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1683 if (!force)
1684 break;
1685 tx_desc->status &=
1686 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1687 }
1688
1689 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1690 BUG_ON(txq->len == 0);
1691 txq->len--;
1692 priv->pending_tx_pkts--;
1693
1694 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1695 size = le16_to_cpu(tx_desc->pkt_len);
1696 skb = txq->skb[tx];
1697 txq->skb[tx] = NULL;
1698
1699 BUG_ON(skb == NULL);
1700 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1701
1702 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1703
1704 wh = (struct ieee80211_hdr *) skb->data;
1705
1706 /* Mark descriptor as unused */
1707 tx_desc->pkt_phys_addr = 0;
1708 tx_desc->pkt_len = 0;
1709
1710 info = IEEE80211_SKB_CB(skb);
1711 if (ieee80211_is_data(wh->frame_control)) {
1712 rcu_read_lock();
1713 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1714 wh->addr2);
1715 if (sta) {
1716 sta_info = MWL8K_STA(sta);
1717 BUG_ON(sta_info == NULL);
1718 rate_info = le16_to_cpu(tx_desc->rate_info);
1719 /* If rate is < 6.5 Mpbs for an ht station
1720 * do not form an ampdu. If the station is a
1721 * legacy station (format = 0), do not form an
1722 * ampdu
1723 */
1724 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1725 RI_FORMAT(rate_info) == 0) {
1726 sta_info->is_ampdu_allowed = false;
1727 } else {
1728 sta_info->is_ampdu_allowed = true;
1729 }
1730 }
1731 rcu_read_unlock();
1732 }
1733
1734 ieee80211_tx_info_clear_status(info);
1735
1736 /* Rate control is happening in the firmware.
1737 * Ensure no tx rate is being reported.
1738 */
1739 info->status.rates[0].idx = -1;
1740 info->status.rates[0].count = 1;
1741
1742 if (MWL8K_TXD_SUCCESS(status))
1743 info->flags |= IEEE80211_TX_STAT_ACK;
1744
1745 ieee80211_tx_status_irqsafe(hw, skb);
1746
1747 processed++;
1748 }
1749
1750 return processed;
1751}
1752
1753/* must be called only when the card's transmit is completely halted */
1754static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1755{
1756 struct mwl8k_priv *priv = hw->priv;
1757 struct mwl8k_tx_queue *txq = priv->txq + index;
1758
1759 if (txq->txd == NULL)
1760 return;
1761
1762 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1763
1764 kfree(txq->skb);
1765 txq->skb = NULL;
1766
1767 pci_free_consistent(priv->pdev,
1768 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1769 txq->txd, txq->txd_dma);
1770 txq->txd = NULL;
1771}
1772
1773/* caller must hold priv->stream_lock when calling the stream functions */
1774static struct mwl8k_ampdu_stream *
1775mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1776{
1777 struct mwl8k_ampdu_stream *stream;
1778 struct mwl8k_priv *priv = hw->priv;
1779 int i;
1780
1781 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1782 stream = &priv->ampdu[i];
1783 if (stream->state == AMPDU_NO_STREAM) {
1784 stream->sta = sta;
1785 stream->state = AMPDU_STREAM_NEW;
1786 stream->tid = tid;
1787 stream->idx = i;
1788 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1789 sta->addr, tid);
1790 return stream;
1791 }
1792 }
1793 return NULL;
1794}
1795
1796static int
1797mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1798{
1799 int ret;
1800
1801 /* if the stream has already been started, don't start it again */
1802 if (stream->state != AMPDU_STREAM_NEW)
1803 return 0;
1804 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1805 if (ret)
1806 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1807 "%d\n", stream->sta->addr, stream->tid, ret);
1808 else
1809 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1810 stream->sta->addr, stream->tid);
1811 return ret;
1812}
1813
1814static void
1815mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1816{
1817 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1818 stream->tid);
1819 memset(stream, 0, sizeof(*stream));
1820}
1821
1822static struct mwl8k_ampdu_stream *
1823mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1824{
1825 struct mwl8k_priv *priv = hw->priv;
1826 int i;
1827
1828 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1829 struct mwl8k_ampdu_stream *stream;
1830 stream = &priv->ampdu[i];
1831 if (stream->state == AMPDU_NO_STREAM)
1832 continue;
1833 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1834 stream->tid == tid)
1835 return stream;
1836 }
1837 return NULL;
1838}
1839
1840#define MWL8K_AMPDU_PACKET_THRESHOLD 64
1841static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1842{
1843 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1844 struct tx_traffic_info *tx_stats;
1845
1846 BUG_ON(tid >= MWL8K_MAX_TID);
1847 tx_stats = &sta_info->tx_stats[tid];
1848
1849 return sta_info->is_ampdu_allowed &&
1850 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1851}
1852
1853static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1854{
1855 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1856 struct tx_traffic_info *tx_stats;
1857
1858 BUG_ON(tid >= MWL8K_MAX_TID);
1859 tx_stats = &sta_info->tx_stats[tid];
1860
1861 if (tx_stats->start_time == 0)
1862 tx_stats->start_time = jiffies;
1863
1864 /* reset the packet count after each second elapses. If the number of
1865 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1866 * an ampdu stream to be started.
1867 */
1868 if (jiffies - tx_stats->start_time > HZ) {
1869 tx_stats->pkts = 0;
1870 tx_stats->start_time = 0;
1871 } else
1872 tx_stats->pkts++;
1873}
1874
1875/* The hardware ampdu queues start from 5.
1876 * txpriorities for ampdu queues are
1877 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1878 * and queue 3 is lowest (queue 4 is reserved)
1879 */
1880#define BA_QUEUE 5
1881
1882static void
1883mwl8k_txq_xmit(struct ieee80211_hw *hw,
1884 int index,
1885 struct ieee80211_sta *sta,
1886 struct sk_buff *skb)
1887{
1888 struct mwl8k_priv *priv = hw->priv;
1889 struct ieee80211_tx_info *tx_info;
1890 struct mwl8k_vif *mwl8k_vif;
1891 struct ieee80211_hdr *wh;
1892 struct mwl8k_tx_queue *txq;
1893 struct mwl8k_tx_desc *tx;
1894 dma_addr_t dma;
1895 u32 txstatus;
1896 u8 txdatarate;
1897 u16 qos;
1898 int txpriority;
1899 u8 tid = 0;
1900 struct mwl8k_ampdu_stream *stream = NULL;
1901 bool start_ba_session = false;
1902 bool mgmtframe = false;
1903 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1904 bool eapol_frame = false;
1905
1906 wh = (struct ieee80211_hdr *)skb->data;
1907 if (ieee80211_is_data_qos(wh->frame_control))
1908 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1909 else
1910 qos = 0;
1911
1912 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1913 eapol_frame = true;
1914
1915 if (ieee80211_is_mgmt(wh->frame_control))
1916 mgmtframe = true;
1917
1918 if (priv->ap_fw)
1919 mwl8k_encapsulate_tx_frame(priv, skb);
1920 else
1921 mwl8k_add_dma_header(priv, skb, 0, 0);
1922
1923 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1924
1925 tx_info = IEEE80211_SKB_CB(skb);
1926 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1927
1928 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1929 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1930 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1931 mwl8k_vif->seqno += 0x10;
1932 }
1933
1934 /* Setup firmware control bit fields for each frame type. */
1935 txstatus = 0;
1936 txdatarate = 0;
1937 if (ieee80211_is_mgmt(wh->frame_control) ||
1938 ieee80211_is_ctl(wh->frame_control)) {
1939 txdatarate = 0;
1940 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1941 } else if (ieee80211_is_data(wh->frame_control)) {
1942 txdatarate = 1;
1943 if (is_multicast_ether_addr(wh->addr1))
1944 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1945
1946 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1947 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1948 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1949 else
1950 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1951 }
1952
1953 /* Queue ADDBA request in the respective data queue. While setting up
1954 * the ampdu stream, mac80211 queues further packets for that
1955 * particular ra/tid pair. However, packets piled up in the hardware
1956 * for that ra/tid pair will still go out. ADDBA request and the
1957 * related data packets going out from different queues asynchronously
1958 * will cause a shift in the receiver window which might result in
1959 * ampdu packets getting dropped at the receiver after the stream has
1960 * been setup.
1961 */
1962 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1963 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1964 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1965 priv->ap_fw)) {
1966 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1967 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1968 index = mwl8k_tid_queue_mapping(tid);
1969 }
1970
1971 txpriority = index;
1972
1973 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1974 ieee80211_is_data_qos(wh->frame_control)) {
1975 tid = qos & 0xf;
1976 mwl8k_tx_count_packet(sta, tid);
1977 spin_lock(&priv->stream_lock);
1978 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1979 if (stream != NULL) {
1980 if (stream->state == AMPDU_STREAM_ACTIVE) {
1981 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1982 txpriority = (BA_QUEUE + stream->idx) %
1983 TOTAL_HW_TX_QUEUES;
1984 if (stream->idx <= 1)
1985 index = stream->idx +
1986 MWL8K_TX_WMM_QUEUES;
1987
1988 } else if (stream->state == AMPDU_STREAM_NEW) {
1989 /* We get here if the driver sends us packets
1990 * after we've initiated a stream, but before
1991 * our ampdu_action routine has been called
1992 * with IEEE80211_AMPDU_TX_START to get the SSN
1993 * for the ADDBA request. So this packet can
1994 * go out with no risk of sequence number
1995 * mismatch. No special handling is required.
1996 */
1997 } else {
1998 /* Drop packets that would go out after the
1999 * ADDBA request was sent but before the ADDBA
2000 * response is received. If we don't do this,
2001 * the recipient would probably receive it
2002 * after the ADDBA request with SSN 0. This
2003 * will cause the recipient's BA receive window
2004 * to shift, which would cause the subsequent
2005 * packets in the BA stream to be discarded.
2006 * mac80211 queues our packets for us in this
2007 * case, so this is really just a safety check.
2008 */
2009 wiphy_warn(hw->wiphy,
2010 "Cannot send packet while ADDBA "
2011 "dialog is underway.\n");
2012 spin_unlock(&priv->stream_lock);
2013 dev_kfree_skb(skb);
2014 return;
2015 }
2016 } else {
2017 /* Defer calling mwl8k_start_stream so that the current
2018 * skb can go out before the ADDBA request. This
2019 * prevents sequence number mismatch at the recepient
2020 * as described above.
2021 */
2022 if (mwl8k_ampdu_allowed(sta, tid)) {
2023 stream = mwl8k_add_stream(hw, sta, tid);
2024 if (stream != NULL)
2025 start_ba_session = true;
2026 }
2027 }
2028 spin_unlock(&priv->stream_lock);
2029 } else {
2030 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2031 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2032 }
2033
2034 dma = pci_map_single(priv->pdev, skb->data,
2035 skb->len, PCI_DMA_TODEVICE);
2036
2037 if (pci_dma_mapping_error(priv->pdev, dma)) {
2038 wiphy_debug(hw->wiphy,
2039 "failed to dma map skb, dropping TX frame.\n");
2040 if (start_ba_session) {
2041 spin_lock(&priv->stream_lock);
2042 mwl8k_remove_stream(hw, stream);
2043 spin_unlock(&priv->stream_lock);
2044 }
2045 dev_kfree_skb(skb);
2046 return;
2047 }
2048
2049 spin_lock_bh(&priv->tx_lock);
2050
2051 txq = priv->txq + index;
2052
2053 /* Mgmt frames that go out frequently are probe
2054 * responses. Other mgmt frames got out relatively
2055 * infrequently. Hence reserve 2 buffers so that
2056 * other mgmt frames do not get dropped due to an
2057 * already queued probe response in one of the
2058 * reserved buffers.
2059 */
2060
2061 if (txq->len >= MWL8K_TX_DESCS - 2) {
2062 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2063 if (start_ba_session) {
2064 spin_lock(&priv->stream_lock);
2065 mwl8k_remove_stream(hw, stream);
2066 spin_unlock(&priv->stream_lock);
2067 }
2068 mwl8k_tx_start(priv);
2069 spin_unlock_bh(&priv->tx_lock);
2070 pci_unmap_single(priv->pdev, dma, skb->len,
2071 PCI_DMA_TODEVICE);
2072 dev_kfree_skb(skb);
2073 return;
2074 }
2075 }
2076
2077 BUG_ON(txq->skb[txq->tail] != NULL);
2078 txq->skb[txq->tail] = skb;
2079
2080 tx = txq->txd + txq->tail;
2081 tx->data_rate = txdatarate;
2082 tx->tx_priority = txpriority;
2083 tx->qos_control = cpu_to_le16(qos);
2084 tx->pkt_phys_addr = cpu_to_le32(dma);
2085 tx->pkt_len = cpu_to_le16(skb->len);
2086 tx->rate_info = 0;
2087 if (!priv->ap_fw && sta != NULL)
2088 tx->peer_id = MWL8K_STA(sta)->peer_id;
2089 else
2090 tx->peer_id = 0;
2091
2092 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2093 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2094 MWL8K_HW_TIMER_REGISTER));
2095 else
2096 tx->timestamp = 0;
2097
2098 wmb();
2099 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2100
2101 txq->len++;
2102 priv->pending_tx_pkts++;
2103
2104 txq->tail++;
2105 if (txq->tail == MWL8K_TX_DESCS)
2106 txq->tail = 0;
2107
2108 mwl8k_tx_start(priv);
2109
2110 spin_unlock_bh(&priv->tx_lock);
2111
2112 /* Initiate the ampdu session here */
2113 if (start_ba_session) {
2114 spin_lock(&priv->stream_lock);
2115 if (mwl8k_start_stream(hw, stream))
2116 mwl8k_remove_stream(hw, stream);
2117 spin_unlock(&priv->stream_lock);
2118 }
2119}
2120
2121
2122/*
2123 * Firmware access.
2124 *
2125 * We have the following requirements for issuing firmware commands:
2126 * - Some commands require that the packet transmit path is idle when
2127 * the command is issued. (For simplicity, we'll just quiesce the
2128 * transmit path for every command.)
2129 * - There are certain sequences of commands that need to be issued to
2130 * the hardware sequentially, with no other intervening commands.
2131 *
2132 * This leads to an implementation of a "firmware lock" as a mutex that
2133 * can be taken recursively, and which is taken by both the low-level
2134 * command submission function (mwl8k_post_cmd) as well as any users of
2135 * that function that require issuing of an atomic sequence of commands,
2136 * and quiesces the transmit path whenever it's taken.
2137 */
2138static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2139{
2140 struct mwl8k_priv *priv = hw->priv;
2141
2142 if (priv->fw_mutex_owner != current) {
2143 int rc;
2144
2145 mutex_lock(&priv->fw_mutex);
2146 ieee80211_stop_queues(hw);
2147
2148 rc = mwl8k_tx_wait_empty(hw);
2149 if (rc) {
2150 if (!priv->hw_restart_in_progress)
2151 ieee80211_wake_queues(hw);
2152
2153 mutex_unlock(&priv->fw_mutex);
2154
2155 return rc;
2156 }
2157
2158 priv->fw_mutex_owner = current;
2159 }
2160
2161 priv->fw_mutex_depth++;
2162
2163 return 0;
2164}
2165
2166static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2167{
2168 struct mwl8k_priv *priv = hw->priv;
2169
2170 if (!--priv->fw_mutex_depth) {
2171 if (!priv->hw_restart_in_progress)
2172 ieee80211_wake_queues(hw);
2173
2174 priv->fw_mutex_owner = NULL;
2175 mutex_unlock(&priv->fw_mutex);
2176 }
2177}
2178
2179static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2180 u32 bitmap);
2181
2182/*
2183 * Command processing.
2184 */
2185
2186/* Timeout firmware commands after 10s */
2187#define MWL8K_CMD_TIMEOUT_MS 10000
2188
2189static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2190{
2191 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2192 struct mwl8k_priv *priv = hw->priv;
2193 void __iomem *regs = priv->regs;
2194 dma_addr_t dma_addr;
2195 unsigned int dma_size;
2196 int rc;
2197 unsigned long timeout = 0;
2198 u8 buf[32];
2199 u32 bitmap = 0;
2200
2201 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2202 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2203
2204 /* Before posting firmware commands that could change the hardware
2205 * characteristics, make sure that all BSSes are stopped temporary.
2206 * Enable these stopped BSSes after completion of the commands
2207 */
2208
2209 rc = mwl8k_fw_lock(hw);
2210 if (rc)
2211 return rc;
2212
2213 if (priv->ap_fw && priv->running_bsses) {
2214 switch (le16_to_cpu(cmd->code)) {
2215 case MWL8K_CMD_SET_RF_CHANNEL:
2216 case MWL8K_CMD_RADIO_CONTROL:
2217 case MWL8K_CMD_RF_TX_POWER:
2218 case MWL8K_CMD_TX_POWER:
2219 case MWL8K_CMD_RF_ANTENNA:
2220 case MWL8K_CMD_RTS_THRESHOLD:
2221 case MWL8K_CMD_MIMO_CONFIG:
2222 bitmap = priv->running_bsses;
2223 mwl8k_enable_bsses(hw, false, bitmap);
2224 break;
2225 }
2226 }
2227
2228 cmd->result = (__force __le16) 0xffff;
2229 dma_size = le16_to_cpu(cmd->length);
2230 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2231 PCI_DMA_BIDIRECTIONAL);
2232 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2233 return -ENOMEM;
2234
2235 priv->hostcmd_wait = &cmd_wait;
2236 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2237 iowrite32(MWL8K_H2A_INT_DOORBELL,
2238 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2239 iowrite32(MWL8K_H2A_INT_DUMMY,
2240 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2241
2242 timeout = wait_for_completion_timeout(&cmd_wait,
2243 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2244
2245 priv->hostcmd_wait = NULL;
2246
2247
2248 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2249 PCI_DMA_BIDIRECTIONAL);
2250
2251 if (!timeout) {
2252 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2253 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2254 MWL8K_CMD_TIMEOUT_MS);
2255 rc = -ETIMEDOUT;
2256 } else {
2257 int ms;
2258
2259 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2260
2261 rc = cmd->result ? -EINVAL : 0;
2262 if (rc)
2263 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2264 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2265 le16_to_cpu(cmd->result));
2266 else if (ms > 2000)
2267 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2268 mwl8k_cmd_name(cmd->code,
2269 buf, sizeof(buf)),
2270 ms);
2271 }
2272
2273 if (bitmap)
2274 mwl8k_enable_bsses(hw, true, bitmap);
2275
2276 mwl8k_fw_unlock(hw);
2277
2278 return rc;
2279}
2280
2281static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2282 struct ieee80211_vif *vif,
2283 struct mwl8k_cmd_pkt *cmd)
2284{
2285 if (vif != NULL)
2286 cmd->macid = MWL8K_VIF(vif)->macid;
2287 return mwl8k_post_cmd(hw, cmd);
2288}
2289
2290/*
2291 * Setup code shared between STA and AP firmware images.
2292 */
2293static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2294{
2295 struct mwl8k_priv *priv = hw->priv;
2296
2297 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2298 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2299
2300 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2301 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2302
2303 priv->band_24.band = IEEE80211_BAND_2GHZ;
2304 priv->band_24.channels = priv->channels_24;
2305 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2306 priv->band_24.bitrates = priv->rates_24;
2307 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2308
2309 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2310}
2311
2312static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2313{
2314 struct mwl8k_priv *priv = hw->priv;
2315
2316 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2317 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2318
2319 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2320 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2321
2322 priv->band_50.band = IEEE80211_BAND_5GHZ;
2323 priv->band_50.channels = priv->channels_50;
2324 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2325 priv->band_50.bitrates = priv->rates_50;
2326 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2327
2328 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2329}
2330
2331/*
2332 * CMD_GET_HW_SPEC (STA version).
2333 */
2334struct mwl8k_cmd_get_hw_spec_sta {
2335 struct mwl8k_cmd_pkt header;
2336 __u8 hw_rev;
2337 __u8 host_interface;
2338 __le16 num_mcaddrs;
2339 __u8 perm_addr[ETH_ALEN];
2340 __le16 region_code;
2341 __le32 fw_rev;
2342 __le32 ps_cookie;
2343 __le32 caps;
2344 __u8 mcs_bitmap[16];
2345 __le32 rx_queue_ptr;
2346 __le32 num_tx_queues;
2347 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2348 __le32 caps2;
2349 __le32 num_tx_desc_per_queue;
2350 __le32 total_rxd;
2351} __packed;
2352
2353#define MWL8K_CAP_MAX_AMSDU 0x20000000
2354#define MWL8K_CAP_GREENFIELD 0x08000000
2355#define MWL8K_CAP_AMPDU 0x04000000
2356#define MWL8K_CAP_RX_STBC 0x01000000
2357#define MWL8K_CAP_TX_STBC 0x00800000
2358#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2359#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2360#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2361#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2362#define MWL8K_CAP_DELAY_BA 0x00003000
2363#define MWL8K_CAP_MIMO 0x00000200
2364#define MWL8K_CAP_40MHZ 0x00000100
2365#define MWL8K_CAP_BAND_MASK 0x00000007
2366#define MWL8K_CAP_5GHZ 0x00000004
2367#define MWL8K_CAP_2GHZ4 0x00000001
2368
2369static void
2370mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2371 struct ieee80211_supported_band *band, u32 cap)
2372{
2373 int rx_streams;
2374 int tx_streams;
2375
2376 band->ht_cap.ht_supported = 1;
2377
2378 if (cap & MWL8K_CAP_MAX_AMSDU)
2379 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2380 if (cap & MWL8K_CAP_GREENFIELD)
2381 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2382 if (cap & MWL8K_CAP_AMPDU) {
2383 ieee80211_hw_set(hw, AMPDU_AGGREGATION);
2384 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2385 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2386 }
2387 if (cap & MWL8K_CAP_RX_STBC)
2388 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2389 if (cap & MWL8K_CAP_TX_STBC)
2390 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2391 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2392 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2393 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2394 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2395 if (cap & MWL8K_CAP_DELAY_BA)
2396 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2397 if (cap & MWL8K_CAP_40MHZ)
2398 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2399
2400 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2401 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2402
2403 band->ht_cap.mcs.rx_mask[0] = 0xff;
2404 if (rx_streams >= 2)
2405 band->ht_cap.mcs.rx_mask[1] = 0xff;
2406 if (rx_streams >= 3)
2407 band->ht_cap.mcs.rx_mask[2] = 0xff;
2408 band->ht_cap.mcs.rx_mask[4] = 0x01;
2409 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2410
2411 if (rx_streams != tx_streams) {
2412 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2413 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2414 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2415 }
2416}
2417
2418static void
2419mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2420{
2421 struct mwl8k_priv *priv = hw->priv;
2422
2423 if (priv->caps)
2424 return;
2425
2426 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2427 mwl8k_setup_2ghz_band(hw);
2428 if (caps & MWL8K_CAP_MIMO)
2429 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2430 }
2431
2432 if (caps & MWL8K_CAP_5GHZ) {
2433 mwl8k_setup_5ghz_band(hw);
2434 if (caps & MWL8K_CAP_MIMO)
2435 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2436 }
2437
2438 priv->caps = caps;
2439}
2440
2441static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2442{
2443 struct mwl8k_priv *priv = hw->priv;
2444 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2445 int rc;
2446 int i;
2447
2448 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2449 if (cmd == NULL)
2450 return -ENOMEM;
2451
2452 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2453 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2454
2455 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2456 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2457 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2458 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2459 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2460 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2461 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2462 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2463
2464 rc = mwl8k_post_cmd(hw, &cmd->header);
2465
2466 if (!rc) {
2467 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2468 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2469 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2470 priv->hw_rev = cmd->hw_rev;
2471 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2472 priv->ap_macids_supported = 0x00000000;
2473 priv->sta_macids_supported = 0x00000001;
2474 }
2475
2476 kfree(cmd);
2477 return rc;
2478}
2479
2480/*
2481 * CMD_GET_HW_SPEC (AP version).
2482 */
2483struct mwl8k_cmd_get_hw_spec_ap {
2484 struct mwl8k_cmd_pkt header;
2485 __u8 hw_rev;
2486 __u8 host_interface;
2487 __le16 num_wcb;
2488 __le16 num_mcaddrs;
2489 __u8 perm_addr[ETH_ALEN];
2490 __le16 region_code;
2491 __le16 num_antenna;
2492 __le32 fw_rev;
2493 __le32 wcbbase0;
2494 __le32 rxwrptr;
2495 __le32 rxrdptr;
2496 __le32 ps_cookie;
2497 __le32 wcbbase1;
2498 __le32 wcbbase2;
2499 __le32 wcbbase3;
2500 __le32 fw_api_version;
2501 __le32 caps;
2502 __le32 num_of_ampdu_queues;
2503 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2504} __packed;
2505
2506static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2507{
2508 struct mwl8k_priv *priv = hw->priv;
2509 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2510 int rc, i;
2511 u32 api_version;
2512
2513 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2514 if (cmd == NULL)
2515 return -ENOMEM;
2516
2517 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2518 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2519
2520 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2521 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2522
2523 rc = mwl8k_post_cmd(hw, &cmd->header);
2524
2525 if (!rc) {
2526 int off;
2527
2528 api_version = le32_to_cpu(cmd->fw_api_version);
2529 if (priv->device_info->fw_api_ap != api_version) {
2530 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2531 " Expected %d got %d.\n", MWL8K_NAME,
2532 priv->device_info->part_name,
2533 priv->device_info->fw_api_ap,
2534 api_version);
2535 rc = -EINVAL;
2536 goto done;
2537 }
2538 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2539 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2540 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2541 priv->hw_rev = cmd->hw_rev;
2542 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2543 priv->ap_macids_supported = 0x000000ff;
2544 priv->sta_macids_supported = 0x00000100;
2545 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2546 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2547 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2548 " but we only support %d.\n",
2549 priv->num_ampdu_queues,
2550 MWL8K_MAX_AMPDU_QUEUES);
2551 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2552 }
2553 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2554 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2555
2556 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2557 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2558
2559 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2560 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2561 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2562 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2563
2564 for (i = 0; i < priv->num_ampdu_queues; i++)
2565 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2566 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2567 }
2568
2569done:
2570 kfree(cmd);
2571 return rc;
2572}
2573
2574/*
2575 * CMD_SET_HW_SPEC.
2576 */
2577struct mwl8k_cmd_set_hw_spec {
2578 struct mwl8k_cmd_pkt header;
2579 __u8 hw_rev;
2580 __u8 host_interface;
2581 __le16 num_mcaddrs;
2582 __u8 perm_addr[ETH_ALEN];
2583 __le16 region_code;
2584 __le32 fw_rev;
2585 __le32 ps_cookie;
2586 __le32 caps;
2587 __le32 rx_queue_ptr;
2588 __le32 num_tx_queues;
2589 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2590 __le32 flags;
2591 __le32 num_tx_desc_per_queue;
2592 __le32 total_rxd;
2593} __packed;
2594
2595/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2596 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2597 * the packets that are queued for more than 500ms, will be dropped in the
2598 * hardware. This helps minimizing the issues caused due to head-of-line
2599 * blocking where a slow client can hog the bandwidth and affect traffic to a
2600 * faster client.
2601 */
2602#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2603#define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2604#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2605#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2606#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2607
2608static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2609{
2610 struct mwl8k_priv *priv = hw->priv;
2611 struct mwl8k_cmd_set_hw_spec *cmd;
2612 int rc;
2613 int i;
2614
2615 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2616 if (cmd == NULL)
2617 return -ENOMEM;
2618
2619 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2620 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2621
2622 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2623 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2624 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2625
2626 /*
2627 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2628 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2629 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2630 * priority is interpreted the right way in firmware.
2631 */
2632 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2633 int j = mwl8k_tx_queues(priv) - 1 - i;
2634 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2635 }
2636
2637 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2638 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2639 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2640 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2641 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2642 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2643 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2644
2645 rc = mwl8k_post_cmd(hw, &cmd->header);
2646 kfree(cmd);
2647
2648 return rc;
2649}
2650
2651/*
2652 * CMD_MAC_MULTICAST_ADR.
2653 */
2654struct mwl8k_cmd_mac_multicast_adr {
2655 struct mwl8k_cmd_pkt header;
2656 __le16 action;
2657 __le16 numaddr;
2658 __u8 addr[0][ETH_ALEN];
2659};
2660
2661#define MWL8K_ENABLE_RX_DIRECTED 0x0001
2662#define MWL8K_ENABLE_RX_MULTICAST 0x0002
2663#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2664#define MWL8K_ENABLE_RX_BROADCAST 0x0008
2665
2666static struct mwl8k_cmd_pkt *
2667__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2668 struct netdev_hw_addr_list *mc_list)
2669{
2670 struct mwl8k_priv *priv = hw->priv;
2671 struct mwl8k_cmd_mac_multicast_adr *cmd;
2672 int size;
2673 int mc_count = 0;
2674
2675 if (mc_list)
2676 mc_count = netdev_hw_addr_list_count(mc_list);
2677
2678 if (allmulti || mc_count > priv->num_mcaddrs) {
2679 allmulti = 1;
2680 mc_count = 0;
2681 }
2682
2683 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2684
2685 cmd = kzalloc(size, GFP_ATOMIC);
2686 if (cmd == NULL)
2687 return NULL;
2688
2689 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2690 cmd->header.length = cpu_to_le16(size);
2691 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2692 MWL8K_ENABLE_RX_BROADCAST);
2693
2694 if (allmulti) {
2695 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2696 } else if (mc_count) {
2697 struct netdev_hw_addr *ha;
2698 int i = 0;
2699
2700 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2701 cmd->numaddr = cpu_to_le16(mc_count);
2702 netdev_hw_addr_list_for_each(ha, mc_list) {
2703 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2704 }
2705 }
2706
2707 return &cmd->header;
2708}
2709
2710/*
2711 * CMD_GET_STAT.
2712 */
2713struct mwl8k_cmd_get_stat {
2714 struct mwl8k_cmd_pkt header;
2715 __le32 stats[64];
2716} __packed;
2717
2718#define MWL8K_STAT_ACK_FAILURE 9
2719#define MWL8K_STAT_RTS_FAILURE 12
2720#define MWL8K_STAT_FCS_ERROR 24
2721#define MWL8K_STAT_RTS_SUCCESS 11
2722
2723static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2724 struct ieee80211_low_level_stats *stats)
2725{
2726 struct mwl8k_cmd_get_stat *cmd;
2727 int rc;
2728
2729 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2730 if (cmd == NULL)
2731 return -ENOMEM;
2732
2733 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2734 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2735
2736 rc = mwl8k_post_cmd(hw, &cmd->header);
2737 if (!rc) {
2738 stats->dot11ACKFailureCount =
2739 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2740 stats->dot11RTSFailureCount =
2741 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2742 stats->dot11FCSErrorCount =
2743 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2744 stats->dot11RTSSuccessCount =
2745 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2746 }
2747 kfree(cmd);
2748
2749 return rc;
2750}
2751
2752/*
2753 * CMD_RADIO_CONTROL.
2754 */
2755struct mwl8k_cmd_radio_control {
2756 struct mwl8k_cmd_pkt header;
2757 __le16 action;
2758 __le16 control;
2759 __le16 radio_on;
2760} __packed;
2761
2762static int
2763mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2764{
2765 struct mwl8k_priv *priv = hw->priv;
2766 struct mwl8k_cmd_radio_control *cmd;
2767 int rc;
2768
2769 if (enable == priv->radio_on && !force)
2770 return 0;
2771
2772 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2773 if (cmd == NULL)
2774 return -ENOMEM;
2775
2776 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2777 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2778 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2779 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2780 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2781
2782 rc = mwl8k_post_cmd(hw, &cmd->header);
2783 kfree(cmd);
2784
2785 if (!rc)
2786 priv->radio_on = enable;
2787
2788 return rc;
2789}
2790
2791static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2792{
2793 return mwl8k_cmd_radio_control(hw, 0, 0);
2794}
2795
2796static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2797{
2798 return mwl8k_cmd_radio_control(hw, 1, 0);
2799}
2800
2801static int
2802mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2803{
2804 struct mwl8k_priv *priv = hw->priv;
2805
2806 priv->radio_short_preamble = short_preamble;
2807
2808 return mwl8k_cmd_radio_control(hw, 1, 1);
2809}
2810
2811/*
2812 * CMD_RF_TX_POWER.
2813 */
2814#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2815
2816struct mwl8k_cmd_rf_tx_power {
2817 struct mwl8k_cmd_pkt header;
2818 __le16 action;
2819 __le16 support_level;
2820 __le16 current_level;
2821 __le16 reserved;
2822 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2823} __packed;
2824
2825static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2826{
2827 struct mwl8k_cmd_rf_tx_power *cmd;
2828 int rc;
2829
2830 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2831 if (cmd == NULL)
2832 return -ENOMEM;
2833
2834 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2835 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2836 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2837 cmd->support_level = cpu_to_le16(dBm);
2838
2839 rc = mwl8k_post_cmd(hw, &cmd->header);
2840 kfree(cmd);
2841
2842 return rc;
2843}
2844
2845/*
2846 * CMD_TX_POWER.
2847 */
2848#define MWL8K_TX_POWER_LEVEL_TOTAL 12
2849
2850struct mwl8k_cmd_tx_power {
2851 struct mwl8k_cmd_pkt header;
2852 __le16 action;
2853 __le16 band;
2854 __le16 channel;
2855 __le16 bw;
2856 __le16 sub_ch;
2857 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2858} __packed;
2859
2860static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2861 struct ieee80211_conf *conf,
2862 unsigned short pwr)
2863{
2864 struct ieee80211_channel *channel = conf->chandef.chan;
2865 enum nl80211_channel_type channel_type =
2866 cfg80211_get_chandef_type(&conf->chandef);
2867 struct mwl8k_cmd_tx_power *cmd;
2868 int rc;
2869 int i;
2870
2871 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2872 if (cmd == NULL)
2873 return -ENOMEM;
2874
2875 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2876 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2877 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2878
2879 if (channel->band == IEEE80211_BAND_2GHZ)
2880 cmd->band = cpu_to_le16(0x1);
2881 else if (channel->band == IEEE80211_BAND_5GHZ)
2882 cmd->band = cpu_to_le16(0x4);
2883
2884 cmd->channel = cpu_to_le16(channel->hw_value);
2885
2886 if (channel_type == NL80211_CHAN_NO_HT ||
2887 channel_type == NL80211_CHAN_HT20) {
2888 cmd->bw = cpu_to_le16(0x2);
2889 } else {
2890 cmd->bw = cpu_to_le16(0x4);
2891 if (channel_type == NL80211_CHAN_HT40MINUS)
2892 cmd->sub_ch = cpu_to_le16(0x3);
2893 else if (channel_type == NL80211_CHAN_HT40PLUS)
2894 cmd->sub_ch = cpu_to_le16(0x1);
2895 }
2896
2897 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2898 cmd->power_level_list[i] = cpu_to_le16(pwr);
2899
2900 rc = mwl8k_post_cmd(hw, &cmd->header);
2901 kfree(cmd);
2902
2903 return rc;
2904}
2905
2906/*
2907 * CMD_RF_ANTENNA.
2908 */
2909struct mwl8k_cmd_rf_antenna {
2910 struct mwl8k_cmd_pkt header;
2911 __le16 antenna;
2912 __le16 mode;
2913} __packed;
2914
2915#define MWL8K_RF_ANTENNA_RX 1
2916#define MWL8K_RF_ANTENNA_TX 2
2917
2918static int
2919mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2920{
2921 struct mwl8k_cmd_rf_antenna *cmd;
2922 int rc;
2923
2924 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2925 if (cmd == NULL)
2926 return -ENOMEM;
2927
2928 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2929 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2930 cmd->antenna = cpu_to_le16(antenna);
2931 cmd->mode = cpu_to_le16(mask);
2932
2933 rc = mwl8k_post_cmd(hw, &cmd->header);
2934 kfree(cmd);
2935
2936 return rc;
2937}
2938
2939/*
2940 * CMD_SET_BEACON.
2941 */
2942struct mwl8k_cmd_set_beacon {
2943 struct mwl8k_cmd_pkt header;
2944 __le16 beacon_len;
2945 __u8 beacon[0];
2946};
2947
2948static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2949 struct ieee80211_vif *vif, u8 *beacon, int len)
2950{
2951 struct mwl8k_cmd_set_beacon *cmd;
2952 int rc;
2953
2954 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2955 if (cmd == NULL)
2956 return -ENOMEM;
2957
2958 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2959 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2960 cmd->beacon_len = cpu_to_le16(len);
2961 memcpy(cmd->beacon, beacon, len);
2962
2963 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2964 kfree(cmd);
2965
2966 return rc;
2967}
2968
2969/*
2970 * CMD_SET_PRE_SCAN.
2971 */
2972struct mwl8k_cmd_set_pre_scan {
2973 struct mwl8k_cmd_pkt header;
2974} __packed;
2975
2976static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2977{
2978 struct mwl8k_cmd_set_pre_scan *cmd;
2979 int rc;
2980
2981 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2982 if (cmd == NULL)
2983 return -ENOMEM;
2984
2985 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2986 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2987
2988 rc = mwl8k_post_cmd(hw, &cmd->header);
2989 kfree(cmd);
2990
2991 return rc;
2992}
2993
2994/*
2995 * CMD_BBP_REG_ACCESS.
2996 */
2997struct mwl8k_cmd_bbp_reg_access {
2998 struct mwl8k_cmd_pkt header;
2999 __le16 action;
3000 __le16 offset;
3001 u8 value;
3002 u8 rsrv[3];
3003} __packed;
3004
3005static int
3006mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
3007 u16 action,
3008 u16 offset,
3009 u8 *value)
3010{
3011 struct mwl8k_cmd_bbp_reg_access *cmd;
3012 int rc;
3013
3014 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3015 if (cmd == NULL)
3016 return -ENOMEM;
3017
3018 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
3019 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3020 cmd->action = cpu_to_le16(action);
3021 cmd->offset = cpu_to_le16(offset);
3022
3023 rc = mwl8k_post_cmd(hw, &cmd->header);
3024
3025 if (!rc)
3026 *value = cmd->value;
3027 else
3028 *value = 0;
3029
3030 kfree(cmd);
3031
3032 return rc;
3033}
3034
3035/*
3036 * CMD_SET_POST_SCAN.
3037 */
3038struct mwl8k_cmd_set_post_scan {
3039 struct mwl8k_cmd_pkt header;
3040 __le32 isibss;
3041 __u8 bssid[ETH_ALEN];
3042} __packed;
3043
3044static int
3045mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
3046{
3047 struct mwl8k_cmd_set_post_scan *cmd;
3048 int rc;
3049
3050 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3051 if (cmd == NULL)
3052 return -ENOMEM;
3053
3054 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3055 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3056 cmd->isibss = 0;
3057 memcpy(cmd->bssid, mac, ETH_ALEN);
3058
3059 rc = mwl8k_post_cmd(hw, &cmd->header);
3060 kfree(cmd);
3061
3062 return rc;
3063}
3064
3065static int freq_to_idx(struct mwl8k_priv *priv, int freq)
3066{
3067 struct ieee80211_supported_band *sband;
3068 int band, ch, idx = 0;
3069
3070 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
3071 sband = priv->hw->wiphy->bands[band];
3072 if (!sband)
3073 continue;
3074
3075 for (ch = 0; ch < sband->n_channels; ch++, idx++)
3076 if (sband->channels[ch].center_freq == freq)
3077 goto exit;
3078 }
3079
3080exit:
3081 return idx;
3082}
3083
3084static void mwl8k_update_survey(struct mwl8k_priv *priv,
3085 struct ieee80211_channel *channel)
3086{
3087 u32 cca_cnt, rx_rdy;
3088 s8 nf = 0, idx;
3089 struct survey_info *survey;
3090
3091 idx = freq_to_idx(priv, priv->acs_chan->center_freq);
3092 if (idx >= MWL8K_NUM_CHANS) {
3093 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
3094 return;
3095 }
3096
3097 survey = &priv->survey[idx];
3098
3099 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
3100 cca_cnt /= 1000; /* uSecs to mSecs */
3101 survey->time_busy = (u64) cca_cnt;
3102
3103 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
3104 rx_rdy /= 1000; /* uSecs to mSecs */
3105 survey->time_rx = (u64) rx_rdy;
3106
3107 priv->channel_time = jiffies - priv->channel_time;
3108 survey->time = jiffies_to_msecs(priv->channel_time);
3109
3110 survey->channel = channel;
3111
3112 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
3113
3114 /* Make sure sign is negative else ACS at hostapd fails */
3115 survey->noise = nf * -1;
3116
3117 survey->filled = SURVEY_INFO_NOISE_DBM |
3118 SURVEY_INFO_TIME |
3119 SURVEY_INFO_TIME_BUSY |
3120 SURVEY_INFO_TIME_RX;
3121}
3122
3123/*
3124 * CMD_SET_RF_CHANNEL.
3125 */
3126struct mwl8k_cmd_set_rf_channel {
3127 struct mwl8k_cmd_pkt header;
3128 __le16 action;
3129 __u8 current_channel;
3130 __le32 channel_flags;
3131} __packed;
3132
3133static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3134 struct ieee80211_conf *conf)
3135{
3136 struct ieee80211_channel *channel = conf->chandef.chan;
3137 enum nl80211_channel_type channel_type =
3138 cfg80211_get_chandef_type(&conf->chandef);
3139 struct mwl8k_cmd_set_rf_channel *cmd;
3140 struct mwl8k_priv *priv = hw->priv;
3141 int rc;
3142
3143 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3144 if (cmd == NULL)
3145 return -ENOMEM;
3146
3147 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3148 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3149 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3150 cmd->current_channel = channel->hw_value;
3151
3152 if (channel->band == IEEE80211_BAND_2GHZ)
3153 cmd->channel_flags |= cpu_to_le32(0x00000001);
3154 else if (channel->band == IEEE80211_BAND_5GHZ)
3155 cmd->channel_flags |= cpu_to_le32(0x00000004);
3156
3157 if (!priv->sw_scan_start) {
3158 if (channel_type == NL80211_CHAN_NO_HT ||
3159 channel_type == NL80211_CHAN_HT20)
3160 cmd->channel_flags |= cpu_to_le32(0x00000080);
3161 else if (channel_type == NL80211_CHAN_HT40MINUS)
3162 cmd->channel_flags |= cpu_to_le32(0x000001900);
3163 else if (channel_type == NL80211_CHAN_HT40PLUS)
3164 cmd->channel_flags |= cpu_to_le32(0x000000900);
3165 } else {
3166 cmd->channel_flags |= cpu_to_le32(0x00000080);
3167 }
3168
3169 if (priv->sw_scan_start) {
3170 /* Store current channel stats
3171 * before switching to newer one.
3172 * This will be processed only for AP fw.
3173 */
3174 if (priv->channel_time != 0)
3175 mwl8k_update_survey(priv, priv->acs_chan);
3176
3177 priv->channel_time = jiffies;
3178 priv->acs_chan = channel;
3179 }
3180
3181 rc = mwl8k_post_cmd(hw, &cmd->header);
3182 kfree(cmd);
3183
3184 return rc;
3185}
3186
3187/*
3188 * CMD_SET_AID.
3189 */
3190#define MWL8K_FRAME_PROT_DISABLED 0x00
3191#define MWL8K_FRAME_PROT_11G 0x07
3192#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
3193#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
3194
3195struct mwl8k_cmd_update_set_aid {
3196 struct mwl8k_cmd_pkt header;
3197 __le16 aid;
3198
3199 /* AP's MAC address (BSSID) */
3200 __u8 bssid[ETH_ALEN];
3201 __le16 protection_mode;
3202 __u8 supp_rates[14];
3203} __packed;
3204
3205static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3206{
3207 int i;
3208 int j;
3209
3210 /*
3211 * Clear nonstandard rate 4.
3212 */
3213 mask &= 0x1fef;
3214
3215 for (i = 0, j = 0; i < 13; i++) {
3216 if (mask & (1 << i))
3217 rates[j++] = mwl8k_rates_24[i].hw_value;
3218 }
3219}
3220
3221static int
3222mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3223 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3224{
3225 struct mwl8k_cmd_update_set_aid *cmd;
3226 u16 prot_mode;
3227 int rc;
3228
3229 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3230 if (cmd == NULL)
3231 return -ENOMEM;
3232
3233 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3234 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3235 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3236 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3237
3238 if (vif->bss_conf.use_cts_prot) {
3239 prot_mode = MWL8K_FRAME_PROT_11G;
3240 } else {
3241 switch (vif->bss_conf.ht_operation_mode &
3242 IEEE80211_HT_OP_MODE_PROTECTION) {
3243 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3244 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3245 break;
3246 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3247 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3248 break;
3249 default:
3250 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3251 break;
3252 }
3253 }
3254 cmd->protection_mode = cpu_to_le16(prot_mode);
3255
3256 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3257
3258 rc = mwl8k_post_cmd(hw, &cmd->header);
3259 kfree(cmd);
3260
3261 return rc;
3262}
3263
3264/*
3265 * CMD_SET_RATE.
3266 */
3267struct mwl8k_cmd_set_rate {
3268 struct mwl8k_cmd_pkt header;
3269 __u8 legacy_rates[14];
3270
3271 /* Bitmap for supported MCS codes. */
3272 __u8 mcs_set[16];
3273 __u8 reserved[16];
3274} __packed;
3275
3276static int
3277mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3278 u32 legacy_rate_mask, u8 *mcs_rates)
3279{
3280 struct mwl8k_cmd_set_rate *cmd;
3281 int rc;
3282
3283 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3284 if (cmd == NULL)
3285 return -ENOMEM;
3286
3287 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3288 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3289 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3290 memcpy(cmd->mcs_set, mcs_rates, 16);
3291
3292 rc = mwl8k_post_cmd(hw, &cmd->header);
3293 kfree(cmd);
3294
3295 return rc;
3296}
3297
3298/*
3299 * CMD_FINALIZE_JOIN.
3300 */
3301#define MWL8K_FJ_BEACON_MAXLEN 128
3302
3303struct mwl8k_cmd_finalize_join {
3304 struct mwl8k_cmd_pkt header;
3305 __le32 sleep_interval; /* Number of beacon periods to sleep */
3306 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3307} __packed;
3308
3309static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3310 int framelen, int dtim)
3311{
3312 struct mwl8k_cmd_finalize_join *cmd;
3313 struct ieee80211_mgmt *payload = frame;
3314 int payload_len;
3315 int rc;
3316
3317 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3318 if (cmd == NULL)
3319 return -ENOMEM;
3320
3321 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3322 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3323 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3324
3325 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3326 if (payload_len < 0)
3327 payload_len = 0;
3328 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3329 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3330
3331 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3332
3333 rc = mwl8k_post_cmd(hw, &cmd->header);
3334 kfree(cmd);
3335
3336 return rc;
3337}
3338
3339/*
3340 * CMD_SET_RTS_THRESHOLD.
3341 */
3342struct mwl8k_cmd_set_rts_threshold {
3343 struct mwl8k_cmd_pkt header;
3344 __le16 action;
3345 __le16 threshold;
3346} __packed;
3347
3348static int
3349mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3350{
3351 struct mwl8k_cmd_set_rts_threshold *cmd;
3352 int rc;
3353
3354 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3355 if (cmd == NULL)
3356 return -ENOMEM;
3357
3358 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3359 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3360 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3361 cmd->threshold = cpu_to_le16(rts_thresh);
3362
3363 rc = mwl8k_post_cmd(hw, &cmd->header);
3364 kfree(cmd);
3365
3366 return rc;
3367}
3368
3369/*
3370 * CMD_SET_SLOT.
3371 */
3372struct mwl8k_cmd_set_slot {
3373 struct mwl8k_cmd_pkt header;
3374 __le16 action;
3375 __u8 short_slot;
3376} __packed;
3377
3378static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3379{
3380 struct mwl8k_cmd_set_slot *cmd;
3381 int rc;
3382
3383 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3384 if (cmd == NULL)
3385 return -ENOMEM;
3386
3387 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3388 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3389 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3390 cmd->short_slot = short_slot_time;
3391
3392 rc = mwl8k_post_cmd(hw, &cmd->header);
3393 kfree(cmd);
3394
3395 return rc;
3396}
3397
3398/*
3399 * CMD_SET_EDCA_PARAMS.
3400 */
3401struct mwl8k_cmd_set_edca_params {
3402 struct mwl8k_cmd_pkt header;
3403
3404 /* See MWL8K_SET_EDCA_XXX below */
3405 __le16 action;
3406
3407 /* TX opportunity in units of 32 us */
3408 __le16 txop;
3409
3410 union {
3411 struct {
3412 /* Log exponent of max contention period: 0...15 */
3413 __le32 log_cw_max;
3414
3415 /* Log exponent of min contention period: 0...15 */
3416 __le32 log_cw_min;
3417
3418 /* Adaptive interframe spacing in units of 32us */
3419 __u8 aifs;
3420
3421 /* TX queue to configure */
3422 __u8 txq;
3423 } ap;
3424 struct {
3425 /* Log exponent of max contention period: 0...15 */
3426 __u8 log_cw_max;
3427
3428 /* Log exponent of min contention period: 0...15 */
3429 __u8 log_cw_min;
3430
3431 /* Adaptive interframe spacing in units of 32us */
3432 __u8 aifs;
3433
3434 /* TX queue to configure */
3435 __u8 txq;
3436 } sta;
3437 };
3438} __packed;
3439
3440#define MWL8K_SET_EDCA_CW 0x01
3441#define MWL8K_SET_EDCA_TXOP 0x02
3442#define MWL8K_SET_EDCA_AIFS 0x04
3443
3444#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3445 MWL8K_SET_EDCA_TXOP | \
3446 MWL8K_SET_EDCA_AIFS)
3447
3448static int
3449mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3450 __u16 cw_min, __u16 cw_max,
3451 __u8 aifs, __u16 txop)
3452{
3453 struct mwl8k_priv *priv = hw->priv;
3454 struct mwl8k_cmd_set_edca_params *cmd;
3455 int rc;
3456
3457 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3458 if (cmd == NULL)
3459 return -ENOMEM;
3460
3461 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3462 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3463 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3464 cmd->txop = cpu_to_le16(txop);
3465 if (priv->ap_fw) {
3466 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3467 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3468 cmd->ap.aifs = aifs;
3469 cmd->ap.txq = qnum;
3470 } else {
3471 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3472 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3473 cmd->sta.aifs = aifs;
3474 cmd->sta.txq = qnum;
3475 }
3476
3477 rc = mwl8k_post_cmd(hw, &cmd->header);
3478 kfree(cmd);
3479
3480 return rc;
3481}
3482
3483/*
3484 * CMD_SET_WMM_MODE.
3485 */
3486struct mwl8k_cmd_set_wmm_mode {
3487 struct mwl8k_cmd_pkt header;
3488 __le16 action;
3489} __packed;
3490
3491static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3492{
3493 struct mwl8k_priv *priv = hw->priv;
3494 struct mwl8k_cmd_set_wmm_mode *cmd;
3495 int rc;
3496
3497 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3498 if (cmd == NULL)
3499 return -ENOMEM;
3500
3501 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3502 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3503 cmd->action = cpu_to_le16(!!enable);
3504
3505 rc = mwl8k_post_cmd(hw, &cmd->header);
3506 kfree(cmd);
3507
3508 if (!rc)
3509 priv->wmm_enabled = enable;
3510
3511 return rc;
3512}
3513
3514/*
3515 * CMD_MIMO_CONFIG.
3516 */
3517struct mwl8k_cmd_mimo_config {
3518 struct mwl8k_cmd_pkt header;
3519 __le32 action;
3520 __u8 rx_antenna_map;
3521 __u8 tx_antenna_map;
3522} __packed;
3523
3524static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3525{
3526 struct mwl8k_cmd_mimo_config *cmd;
3527 int rc;
3528
3529 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3530 if (cmd == NULL)
3531 return -ENOMEM;
3532
3533 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3534 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3535 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3536 cmd->rx_antenna_map = rx;
3537 cmd->tx_antenna_map = tx;
3538
3539 rc = mwl8k_post_cmd(hw, &cmd->header);
3540 kfree(cmd);
3541
3542 return rc;
3543}
3544
3545/*
3546 * CMD_USE_FIXED_RATE (STA version).
3547 */
3548struct mwl8k_cmd_use_fixed_rate_sta {
3549 struct mwl8k_cmd_pkt header;
3550 __le32 action;
3551 __le32 allow_rate_drop;
3552 __le32 num_rates;
3553 struct {
3554 __le32 is_ht_rate;
3555 __le32 enable_retry;
3556 __le32 rate;
3557 __le32 retry_count;
3558 } rate_entry[8];
3559 __le32 rate_type;
3560 __le32 reserved1;
3561 __le32 reserved2;
3562} __packed;
3563
3564#define MWL8K_USE_AUTO_RATE 0x0002
3565#define MWL8K_UCAST_RATE 0
3566
3567static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3568{
3569 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3570 int rc;
3571
3572 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3573 if (cmd == NULL)
3574 return -ENOMEM;
3575
3576 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3577 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3578 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3579 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3580
3581 rc = mwl8k_post_cmd(hw, &cmd->header);
3582 kfree(cmd);
3583
3584 return rc;
3585}
3586
3587/*
3588 * CMD_USE_FIXED_RATE (AP version).
3589 */
3590struct mwl8k_cmd_use_fixed_rate_ap {
3591 struct mwl8k_cmd_pkt header;
3592 __le32 action;
3593 __le32 allow_rate_drop;
3594 __le32 num_rates;
3595 struct mwl8k_rate_entry_ap {
3596 __le32 is_ht_rate;
3597 __le32 enable_retry;
3598 __le32 rate;
3599 __le32 retry_count;
3600 } rate_entry[4];
3601 u8 multicast_rate;
3602 u8 multicast_rate_type;
3603 u8 management_rate;
3604} __packed;
3605
3606static int
3607mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3608{
3609 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3610 int rc;
3611
3612 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3613 if (cmd == NULL)
3614 return -ENOMEM;
3615
3616 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3617 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3618 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3619 cmd->multicast_rate = mcast;
3620 cmd->management_rate = mgmt;
3621
3622 rc = mwl8k_post_cmd(hw, &cmd->header);
3623 kfree(cmd);
3624
3625 return rc;
3626}
3627
3628/*
3629 * CMD_ENABLE_SNIFFER.
3630 */
3631struct mwl8k_cmd_enable_sniffer {
3632 struct mwl8k_cmd_pkt header;
3633 __le32 action;
3634} __packed;
3635
3636static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3637{
3638 struct mwl8k_cmd_enable_sniffer *cmd;
3639 int rc;
3640
3641 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3642 if (cmd == NULL)
3643 return -ENOMEM;
3644
3645 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3646 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3647 cmd->action = cpu_to_le32(!!enable);
3648
3649 rc = mwl8k_post_cmd(hw, &cmd->header);
3650 kfree(cmd);
3651
3652 return rc;
3653}
3654
3655struct mwl8k_cmd_update_mac_addr {
3656 struct mwl8k_cmd_pkt header;
3657 union {
3658 struct {
3659 __le16 mac_type;
3660 __u8 mac_addr[ETH_ALEN];
3661 } mbss;
3662 __u8 mac_addr[ETH_ALEN];
3663 };
3664} __packed;
3665
3666#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3667#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3668#define MWL8K_MAC_TYPE_PRIMARY_AP 2
3669#define MWL8K_MAC_TYPE_SECONDARY_AP 3
3670
3671static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3672 struct ieee80211_vif *vif, u8 *mac, bool set)
3673{
3674 struct mwl8k_priv *priv = hw->priv;
3675 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3676 struct mwl8k_cmd_update_mac_addr *cmd;
3677 int mac_type;
3678 int rc;
3679
3680 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3681 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3682 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3683 if (priv->ap_fw)
3684 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3685 else
3686 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3687 else
3688 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3689 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3690 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3691 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3692 else
3693 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3694 }
3695
3696 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3697 if (cmd == NULL)
3698 return -ENOMEM;
3699
3700 if (set)
3701 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3702 else
3703 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3704
3705 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3706 if (priv->ap_fw) {
3707 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3708 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3709 } else {
3710 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3711 }
3712
3713 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3714 kfree(cmd);
3715
3716 return rc;
3717}
3718
3719/*
3720 * MWL8K_CMD_SET_MAC_ADDR.
3721 */
3722static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3723 struct ieee80211_vif *vif, u8 *mac)
3724{
3725 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3726}
3727
3728/*
3729 * MWL8K_CMD_DEL_MAC_ADDR.
3730 */
3731static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3732 struct ieee80211_vif *vif, u8 *mac)
3733{
3734 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3735}
3736
3737/*
3738 * CMD_SET_RATEADAPT_MODE.
3739 */
3740struct mwl8k_cmd_set_rate_adapt_mode {
3741 struct mwl8k_cmd_pkt header;
3742 __le16 action;
3743 __le16 mode;
3744} __packed;
3745
3746static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3747{
3748 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3749 int rc;
3750
3751 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3752 if (cmd == NULL)
3753 return -ENOMEM;
3754
3755 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3756 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3757 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3758 cmd->mode = cpu_to_le16(mode);
3759
3760 rc = mwl8k_post_cmd(hw, &cmd->header);
3761 kfree(cmd);
3762
3763 return rc;
3764}
3765
3766/*
3767 * CMD_GET_WATCHDOG_BITMAP.
3768 */
3769struct mwl8k_cmd_get_watchdog_bitmap {
3770 struct mwl8k_cmd_pkt header;
3771 u8 bitmap;
3772} __packed;
3773
3774static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3775{
3776 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3777 int rc;
3778
3779 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3780 if (cmd == NULL)
3781 return -ENOMEM;
3782
3783 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3784 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3785
3786 rc = mwl8k_post_cmd(hw, &cmd->header);
3787 if (!rc)
3788 *bitmap = cmd->bitmap;
3789
3790 kfree(cmd);
3791
3792 return rc;
3793}
3794
3795#define MWL8K_WMM_QUEUE_NUMBER 3
3796
3797static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3798 u8 idx);
3799
3800static void mwl8k_watchdog_ba_events(struct work_struct *work)
3801{
3802 int rc;
3803 u8 bitmap = 0, stream_index;
3804 struct mwl8k_ampdu_stream *streams;
3805 struct mwl8k_priv *priv =
3806 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3807 struct ieee80211_hw *hw = priv->hw;
3808 int i;
3809 u32 status = 0;
3810
3811 mwl8k_fw_lock(hw);
3812
3813 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3814 if (rc)
3815 goto done;
3816
3817 spin_lock(&priv->stream_lock);
3818
3819 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3820 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3821 if (bitmap & (1 << i)) {
3822 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3823 TOTAL_HW_TX_QUEUES;
3824 streams = &priv->ampdu[stream_index];
3825 if (streams->state == AMPDU_STREAM_ACTIVE) {
3826 ieee80211_stop_tx_ba_session(streams->sta,
3827 streams->tid);
3828 spin_unlock(&priv->stream_lock);
3829 mwl8k_destroy_ba(hw, stream_index);
3830 spin_lock(&priv->stream_lock);
3831 }
3832 }
3833 }
3834
3835 spin_unlock(&priv->stream_lock);
3836done:
3837 atomic_dec(&priv->watchdog_event_pending);
3838 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3839 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3840 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3841 mwl8k_fw_unlock(hw);
3842 return;
3843}
3844
3845
3846/*
3847 * CMD_BSS_START.
3848 */
3849struct mwl8k_cmd_bss_start {
3850 struct mwl8k_cmd_pkt header;
3851 __le32 enable;
3852} __packed;
3853
3854static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3855 struct ieee80211_vif *vif, int enable)
3856{
3857 struct mwl8k_cmd_bss_start *cmd;
3858 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3859 struct mwl8k_priv *priv = hw->priv;
3860 int rc;
3861
3862 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3863 return 0;
3864
3865 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3866 return 0;
3867
3868 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3869 if (cmd == NULL)
3870 return -ENOMEM;
3871
3872 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3873 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3874 cmd->enable = cpu_to_le32(enable);
3875
3876 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3877 kfree(cmd);
3878
3879 if (!rc) {
3880 if (enable)
3881 priv->running_bsses |= (1 << mwl8k_vif->macid);
3882 else
3883 priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3884 }
3885 return rc;
3886}
3887
3888static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3889{
3890 struct mwl8k_priv *priv = hw->priv;
3891 struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3892 struct ieee80211_vif *vif;
3893
3894 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3895 vif = mwl8k_vif->vif;
3896
3897 if (!(bitmap & (1 << mwl8k_vif->macid)))
3898 continue;
3899
3900 if (vif->type == NL80211_IFTYPE_AP)
3901 mwl8k_cmd_bss_start(hw, vif, enable);
3902 }
3903}
3904/*
3905 * CMD_BASTREAM.
3906 */
3907
3908/*
3909 * UPSTREAM is tx direction
3910 */
3911#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3912#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3913
3914enum ba_stream_action_type {
3915 MWL8K_BA_CREATE,
3916 MWL8K_BA_UPDATE,
3917 MWL8K_BA_DESTROY,
3918 MWL8K_BA_FLUSH,
3919 MWL8K_BA_CHECK,
3920};
3921
3922
3923struct mwl8k_create_ba_stream {
3924 __le32 flags;
3925 __le32 idle_thrs;
3926 __le32 bar_thrs;
3927 __le32 window_size;
3928 u8 peer_mac_addr[6];
3929 u8 dialog_token;
3930 u8 tid;
3931 u8 queue_id;
3932 u8 param_info;
3933 __le32 ba_context;
3934 u8 reset_seq_no_flag;
3935 __le16 curr_seq_no;
3936 u8 sta_src_mac_addr[6];
3937} __packed;
3938
3939struct mwl8k_destroy_ba_stream {
3940 __le32 flags;
3941 __le32 ba_context;
3942} __packed;
3943
3944struct mwl8k_cmd_bastream {
3945 struct mwl8k_cmd_pkt header;
3946 __le32 action;
3947 union {
3948 struct mwl8k_create_ba_stream create_params;
3949 struct mwl8k_destroy_ba_stream destroy_params;
3950 };
3951} __packed;
3952
3953static int
3954mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3955 struct ieee80211_vif *vif)
3956{
3957 struct mwl8k_cmd_bastream *cmd;
3958 int rc;
3959
3960 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3961 if (cmd == NULL)
3962 return -ENOMEM;
3963
3964 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3965 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3966
3967 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3968
3969 cmd->create_params.queue_id = stream->idx;
3970 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3971 ETH_ALEN);
3972 cmd->create_params.tid = stream->tid;
3973
3974 cmd->create_params.flags =
3975 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3976 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3977
3978 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3979
3980 kfree(cmd);
3981
3982 return rc;
3983}
3984
3985static int
3986mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3987 u8 buf_size, struct ieee80211_vif *vif)
3988{
3989 struct mwl8k_cmd_bastream *cmd;
3990 int rc;
3991
3992 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3993 if (cmd == NULL)
3994 return -ENOMEM;
3995
3996
3997 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3998 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3999
4000 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
4001
4002 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
4003 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
4004 cmd->create_params.queue_id = stream->idx;
4005
4006 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
4007 cmd->create_params.tid = stream->tid;
4008 cmd->create_params.curr_seq_no = cpu_to_le16(0);
4009 cmd->create_params.reset_seq_no_flag = 1;
4010
4011 cmd->create_params.param_info =
4012 (stream->sta->ht_cap.ampdu_factor &
4013 IEEE80211_HT_AMPDU_PARM_FACTOR) |
4014 ((stream->sta->ht_cap.ampdu_density << 2) &
4015 IEEE80211_HT_AMPDU_PARM_DENSITY);
4016
4017 cmd->create_params.flags =
4018 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
4019 BASTREAM_FLAG_DIRECTION_UPSTREAM);
4020
4021 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4022
4023 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
4024 stream->sta->addr, stream->tid);
4025 kfree(cmd);
4026
4027 return rc;
4028}
4029
4030static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
4031 u8 idx)
4032{
4033 struct mwl8k_cmd_bastream *cmd;
4034
4035 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4036 if (cmd == NULL)
4037 return;
4038
4039 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4040 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4041 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
4042
4043 cmd->destroy_params.ba_context = cpu_to_le32(idx);
4044 mwl8k_post_cmd(hw, &cmd->header);
4045
4046 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
4047
4048 kfree(cmd);
4049}
4050
4051/*
4052 * CMD_SET_NEW_STN.
4053 */
4054struct mwl8k_cmd_set_new_stn {
4055 struct mwl8k_cmd_pkt header;
4056 __le16 aid;
4057 __u8 mac_addr[6];
4058 __le16 stn_id;
4059 __le16 action;
4060 __le16 rsvd;
4061 __le32 legacy_rates;
4062 __u8 ht_rates[4];
4063 __le16 cap_info;
4064 __le16 ht_capabilities_info;
4065 __u8 mac_ht_param_info;
4066 __u8 rev;
4067 __u8 control_channel;
4068 __u8 add_channel;
4069 __le16 op_mode;
4070 __le16 stbc;
4071 __u8 add_qos_info;
4072 __u8 is_qos_sta;
4073 __le32 fw_sta_ptr;
4074} __packed;
4075
4076#define MWL8K_STA_ACTION_ADD 0
4077#define MWL8K_STA_ACTION_REMOVE 2
4078
4079static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
4080 struct ieee80211_vif *vif,
4081 struct ieee80211_sta *sta)
4082{
4083 struct mwl8k_cmd_set_new_stn *cmd;
4084 u32 rates;
4085 int rc;
4086
4087 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4088 if (cmd == NULL)
4089 return -ENOMEM;
4090
4091 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4092 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4093 cmd->aid = cpu_to_le16(sta->aid);
4094 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
4095 cmd->stn_id = cpu_to_le16(sta->aid);
4096 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
4097 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
4098 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4099 else
4100 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4101 cmd->legacy_rates = cpu_to_le32(rates);
4102 if (sta->ht_cap.ht_supported) {
4103 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
4104 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
4105 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
4106 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
4107 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
4108 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
4109 ((sta->ht_cap.ampdu_density & 7) << 2);
4110 cmd->is_qos_sta = 1;
4111 }
4112
4113 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4114 kfree(cmd);
4115
4116 return rc;
4117}
4118
4119static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
4120 struct ieee80211_vif *vif)
4121{
4122 struct mwl8k_cmd_set_new_stn *cmd;
4123 int rc;
4124
4125 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4126 if (cmd == NULL)
4127 return -ENOMEM;
4128
4129 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4130 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4131 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4132
4133 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4134 kfree(cmd);
4135
4136 return rc;
4137}
4138
4139static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4140 struct ieee80211_vif *vif, u8 *addr)
4141{
4142 struct mwl8k_cmd_set_new_stn *cmd;
4143 struct mwl8k_priv *priv = hw->priv;
4144 int rc, i;
4145 u8 idx;
4146
4147 spin_lock(&priv->stream_lock);
4148 /* Destroy any active ampdu streams for this sta */
4149 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4150 struct mwl8k_ampdu_stream *s;
4151 s = &priv->ampdu[i];
4152 if (s->state != AMPDU_NO_STREAM) {
4153 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4154 if (s->state == AMPDU_STREAM_ACTIVE) {
4155 idx = s->idx;
4156 spin_unlock(&priv->stream_lock);
4157 mwl8k_destroy_ba(hw, idx);
4158 spin_lock(&priv->stream_lock);
4159 } else if (s->state == AMPDU_STREAM_NEW) {
4160 mwl8k_remove_stream(hw, s);
4161 }
4162 }
4163 }
4164 }
4165
4166 spin_unlock(&priv->stream_lock);
4167
4168 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4169 if (cmd == NULL)
4170 return -ENOMEM;
4171
4172 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4173 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4174 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4175 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4176
4177 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4178 kfree(cmd);
4179
4180 return rc;
4181}
4182
4183/*
4184 * CMD_UPDATE_ENCRYPTION.
4185 */
4186
4187#define MAX_ENCR_KEY_LENGTH 16
4188#define MIC_KEY_LENGTH 8
4189
4190struct mwl8k_cmd_update_encryption {
4191 struct mwl8k_cmd_pkt header;
4192
4193 __le32 action;
4194 __le32 reserved;
4195 __u8 mac_addr[6];
4196 __u8 encr_type;
4197
4198} __packed;
4199
4200struct mwl8k_cmd_set_key {
4201 struct mwl8k_cmd_pkt header;
4202
4203 __le32 action;
4204 __le32 reserved;
4205 __le16 length;
4206 __le16 key_type_id;
4207 __le32 key_info;
4208 __le32 key_id;
4209 __le16 key_len;
4210 __u8 key_material[MAX_ENCR_KEY_LENGTH];
4211 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4212 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4213 __le16 tkip_rsc_low;
4214 __le32 tkip_rsc_high;
4215 __le16 tkip_tsc_low;
4216 __le32 tkip_tsc_high;
4217 __u8 mac_addr[6];
4218} __packed;
4219
4220enum {
4221 MWL8K_ENCR_ENABLE,
4222 MWL8K_ENCR_SET_KEY,
4223 MWL8K_ENCR_REMOVE_KEY,
4224 MWL8K_ENCR_SET_GROUP_KEY,
4225};
4226
4227#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
4228#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
4229#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
4230#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
4231#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
4232
4233enum {
4234 MWL8K_ALG_WEP,
4235 MWL8K_ALG_TKIP,
4236 MWL8K_ALG_CCMP,
4237};
4238
4239#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
4240#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
4241#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
4242#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
4243#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
4244
4245static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4246 struct ieee80211_vif *vif,
4247 u8 *addr,
4248 u8 encr_type)
4249{
4250 struct mwl8k_cmd_update_encryption *cmd;
4251 int rc;
4252
4253 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4254 if (cmd == NULL)
4255 return -ENOMEM;
4256
4257 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4258 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4259 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4260 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4261 cmd->encr_type = encr_type;
4262
4263 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4264 kfree(cmd);
4265
4266 return rc;
4267}
4268
4269static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4270 u8 *addr,
4271 struct ieee80211_key_conf *key)
4272{
4273 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4274 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4275 cmd->length = cpu_to_le16(sizeof(*cmd) -
4276 offsetof(struct mwl8k_cmd_set_key, length));
4277 cmd->key_id = cpu_to_le32(key->keyidx);
4278 cmd->key_len = cpu_to_le16(key->keylen);
4279 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4280
4281 switch (key->cipher) {
4282 case WLAN_CIPHER_SUITE_WEP40:
4283 case WLAN_CIPHER_SUITE_WEP104:
4284 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4285 if (key->keyidx == 0)
4286 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4287
4288 break;
4289 case WLAN_CIPHER_SUITE_TKIP:
4290 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4291 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4292 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4293 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4294 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4295 | MWL8K_KEY_FLAG_TSC_VALID);
4296 break;
4297 case WLAN_CIPHER_SUITE_CCMP:
4298 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4299 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4300 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4301 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4302 break;
4303 default:
4304 return -ENOTSUPP;
4305 }
4306
4307 return 0;
4308}
4309
4310static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4311 struct ieee80211_vif *vif,
4312 u8 *addr,
4313 struct ieee80211_key_conf *key)
4314{
4315 struct mwl8k_cmd_set_key *cmd;
4316 int rc;
4317 int keymlen;
4318 u32 action;
4319 u8 idx;
4320 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4321
4322 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4323 if (cmd == NULL)
4324 return -ENOMEM;
4325
4326 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4327 if (rc < 0)
4328 goto done;
4329
4330 idx = key->keyidx;
4331
4332 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4333 action = MWL8K_ENCR_SET_KEY;
4334 else
4335 action = MWL8K_ENCR_SET_GROUP_KEY;
4336
4337 switch (key->cipher) {
4338 case WLAN_CIPHER_SUITE_WEP40:
4339 case WLAN_CIPHER_SUITE_WEP104:
4340 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4341 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4342 sizeof(*key) + key->keylen);
4343 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4344 }
4345
4346 keymlen = key->keylen;
4347 action = MWL8K_ENCR_SET_KEY;
4348 break;
4349 case WLAN_CIPHER_SUITE_TKIP:
4350 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4351 break;
4352 case WLAN_CIPHER_SUITE_CCMP:
4353 keymlen = key->keylen;
4354 break;
4355 default:
4356 rc = -ENOTSUPP;
4357 goto done;
4358 }
4359
4360 memcpy(cmd->key_material, key->key, keymlen);
4361 cmd->action = cpu_to_le32(action);
4362
4363 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4364done:
4365 kfree(cmd);
4366
4367 return rc;
4368}
4369
4370static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4371 struct ieee80211_vif *vif,
4372 u8 *addr,
4373 struct ieee80211_key_conf *key)
4374{
4375 struct mwl8k_cmd_set_key *cmd;
4376 int rc;
4377 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4378
4379 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4380 if (cmd == NULL)
4381 return -ENOMEM;
4382
4383 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4384 if (rc < 0)
4385 goto done;
4386
4387 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4388 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4389 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4390
4391 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4392
4393 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4394done:
4395 kfree(cmd);
4396
4397 return rc;
4398}
4399
4400static int mwl8k_set_key(struct ieee80211_hw *hw,
4401 enum set_key_cmd cmd_param,
4402 struct ieee80211_vif *vif,
4403 struct ieee80211_sta *sta,
4404 struct ieee80211_key_conf *key)
4405{
4406 int rc = 0;
4407 u8 encr_type;
4408 u8 *addr;
4409 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4410 struct mwl8k_priv *priv = hw->priv;
4411
4412 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4413 return -EOPNOTSUPP;
4414
4415 if (sta == NULL)
4416 addr = vif->addr;
4417 else
4418 addr = sta->addr;
4419
4420 if (cmd_param == SET_KEY) {
4421 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4422 if (rc)
4423 goto out;
4424
4425 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4426 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4427 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4428 else
4429 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4430
4431 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4432 encr_type);
4433 if (rc)
4434 goto out;
4435
4436 mwl8k_vif->is_hw_crypto_enabled = true;
4437
4438 } else {
4439 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4440
4441 if (rc)
4442 goto out;
4443 }
4444out:
4445 return rc;
4446}
4447
4448/*
4449 * CMD_UPDATE_STADB.
4450 */
4451struct ewc_ht_info {
4452 __le16 control1;
4453 __le16 control2;
4454 __le16 control3;
4455} __packed;
4456
4457struct peer_capability_info {
4458 /* Peer type - AP vs. STA. */
4459 __u8 peer_type;
4460
4461 /* Basic 802.11 capabilities from assoc resp. */
4462 __le16 basic_caps;
4463
4464 /* Set if peer supports 802.11n high throughput (HT). */
4465 __u8 ht_support;
4466
4467 /* Valid if HT is supported. */
4468 __le16 ht_caps;
4469 __u8 extended_ht_caps;
4470 struct ewc_ht_info ewc_info;
4471
4472 /* Legacy rate table. Intersection of our rates and peer rates. */
4473 __u8 legacy_rates[12];
4474
4475 /* HT rate table. Intersection of our rates and peer rates. */
4476 __u8 ht_rates[16];
4477 __u8 pad[16];
4478
4479 /* If set, interoperability mode, no proprietary extensions. */
4480 __u8 interop;
4481 __u8 pad2;
4482 __u8 station_id;
4483 __le16 amsdu_enabled;
4484} __packed;
4485
4486struct mwl8k_cmd_update_stadb {
4487 struct mwl8k_cmd_pkt header;
4488
4489 /* See STADB_ACTION_TYPE */
4490 __le32 action;
4491
4492 /* Peer MAC address */
4493 __u8 peer_addr[ETH_ALEN];
4494
4495 __le32 reserved;
4496
4497 /* Peer info - valid during add/update. */
4498 struct peer_capability_info peer_info;
4499} __packed;
4500
4501#define MWL8K_STA_DB_MODIFY_ENTRY 1
4502#define MWL8K_STA_DB_DEL_ENTRY 2
4503
4504/* Peer Entry flags - used to define the type of the peer node */
4505#define MWL8K_PEER_TYPE_ACCESSPOINT 2
4506
4507static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4508 struct ieee80211_vif *vif,
4509 struct ieee80211_sta *sta)
4510{
4511 struct mwl8k_cmd_update_stadb *cmd;
4512 struct peer_capability_info *p;
4513 u32 rates;
4514 int rc;
4515
4516 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4517 if (cmd == NULL)
4518 return -ENOMEM;
4519
4520 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4521 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4522 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4523 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4524
4525 p = &cmd->peer_info;
4526 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4527 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4528 p->ht_support = sta->ht_cap.ht_supported;
4529 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4530 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4531 ((sta->ht_cap.ampdu_density & 7) << 2);
4532 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
4533 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4534 else
4535 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4536 legacy_rate_mask_to_array(p->legacy_rates, rates);
4537 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4538 p->interop = 1;
4539 p->amsdu_enabled = 0;
4540
4541 rc = mwl8k_post_cmd(hw, &cmd->header);
4542 if (!rc)
4543 rc = p->station_id;
4544 kfree(cmd);
4545
4546 return rc;
4547}
4548
4549static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4550 struct ieee80211_vif *vif, u8 *addr)
4551{
4552 struct mwl8k_cmd_update_stadb *cmd;
4553 int rc;
4554
4555 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4556 if (cmd == NULL)
4557 return -ENOMEM;
4558
4559 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4560 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4561 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4562 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4563
4564 rc = mwl8k_post_cmd(hw, &cmd->header);
4565 kfree(cmd);
4566
4567 return rc;
4568}
4569
4570
4571/*
4572 * Interrupt handling.
4573 */
4574static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4575{
4576 struct ieee80211_hw *hw = dev_id;
4577 struct mwl8k_priv *priv = hw->priv;
4578 u32 status;
4579
4580 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4581 if (!status)
4582 return IRQ_NONE;
4583
4584 if (status & MWL8K_A2H_INT_TX_DONE) {
4585 status &= ~MWL8K_A2H_INT_TX_DONE;
4586 tasklet_schedule(&priv->poll_tx_task);
4587 }
4588
4589 if (status & MWL8K_A2H_INT_RX_READY) {
4590 status &= ~MWL8K_A2H_INT_RX_READY;
4591 tasklet_schedule(&priv->poll_rx_task);
4592 }
4593
4594 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4595 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4596 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4597
4598 atomic_inc(&priv->watchdog_event_pending);
4599 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4600 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4601 }
4602
4603 if (status)
4604 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4605
4606 if (status & MWL8K_A2H_INT_OPC_DONE) {
4607 if (priv->hostcmd_wait != NULL)
4608 complete(priv->hostcmd_wait);
4609 }
4610
4611 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4612 if (!mutex_is_locked(&priv->fw_mutex) &&
4613 priv->radio_on && priv->pending_tx_pkts)
4614 mwl8k_tx_start(priv);
4615 }
4616
4617 return IRQ_HANDLED;
4618}
4619
4620static void mwl8k_tx_poll(unsigned long data)
4621{
4622 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4623 struct mwl8k_priv *priv = hw->priv;
4624 int limit;
4625 int i;
4626
4627 limit = 32;
4628
4629 spin_lock_bh(&priv->tx_lock);
4630
4631 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4632 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4633
4634 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4635 complete(priv->tx_wait);
4636 priv->tx_wait = NULL;
4637 }
4638
4639 spin_unlock_bh(&priv->tx_lock);
4640
4641 if (limit) {
4642 writel(~MWL8K_A2H_INT_TX_DONE,
4643 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4644 } else {
4645 tasklet_schedule(&priv->poll_tx_task);
4646 }
4647}
4648
4649static void mwl8k_rx_poll(unsigned long data)
4650{
4651 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4652 struct mwl8k_priv *priv = hw->priv;
4653 int limit;
4654
4655 limit = 32;
4656 limit -= rxq_process(hw, 0, limit);
4657 limit -= rxq_refill(hw, 0, limit);
4658
4659 if (limit) {
4660 writel(~MWL8K_A2H_INT_RX_READY,
4661 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4662 } else {
4663 tasklet_schedule(&priv->poll_rx_task);
4664 }
4665}
4666
4667
4668/*
4669 * Core driver operations.
4670 */
4671static void mwl8k_tx(struct ieee80211_hw *hw,
4672 struct ieee80211_tx_control *control,
4673 struct sk_buff *skb)
4674{
4675 struct mwl8k_priv *priv = hw->priv;
4676 int index = skb_get_queue_mapping(skb);
4677
4678 if (!priv->radio_on) {
4679 wiphy_debug(hw->wiphy,
4680 "dropped TX frame since radio disabled\n");
4681 dev_kfree_skb(skb);
4682 return;
4683 }
4684
4685 mwl8k_txq_xmit(hw, index, control->sta, skb);
4686}
4687
4688static int mwl8k_start(struct ieee80211_hw *hw)
4689{
4690 struct mwl8k_priv *priv = hw->priv;
4691 int rc;
4692
4693 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4694 IRQF_SHARED, MWL8K_NAME, hw);
4695 if (rc) {
4696 priv->irq = -1;
4697 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4698 return -EIO;
4699 }
4700 priv->irq = priv->pdev->irq;
4701
4702 /* Enable TX reclaim and RX tasklets. */
4703 tasklet_enable(&priv->poll_tx_task);
4704 tasklet_enable(&priv->poll_rx_task);
4705
4706 /* Enable interrupts */
4707 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4708 iowrite32(MWL8K_A2H_EVENTS,
4709 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4710
4711 rc = mwl8k_fw_lock(hw);
4712 if (!rc) {
4713 rc = mwl8k_cmd_radio_enable(hw);
4714
4715 if (!priv->ap_fw) {
4716 if (!rc)
4717 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4718
4719 if (!rc)
4720 rc = mwl8k_cmd_set_pre_scan(hw);
4721
4722 if (!rc)
4723 rc = mwl8k_cmd_set_post_scan(hw,
4724 "\x00\x00\x00\x00\x00\x00");
4725 }
4726
4727 if (!rc)
4728 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4729
4730 if (!rc)
4731 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4732
4733 mwl8k_fw_unlock(hw);
4734 }
4735
4736 if (rc) {
4737 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4738 free_irq(priv->pdev->irq, hw);
4739 priv->irq = -1;
4740 tasklet_disable(&priv->poll_tx_task);
4741 tasklet_disable(&priv->poll_rx_task);
4742 } else {
4743 ieee80211_wake_queues(hw);
4744 }
4745
4746 return rc;
4747}
4748
4749static void mwl8k_stop(struct ieee80211_hw *hw)
4750{
4751 struct mwl8k_priv *priv = hw->priv;
4752 int i;
4753
4754 if (!priv->hw_restart_in_progress)
4755 mwl8k_cmd_radio_disable(hw);
4756
4757 ieee80211_stop_queues(hw);
4758
4759 /* Disable interrupts */
4760 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4761 if (priv->irq != -1) {
4762 free_irq(priv->pdev->irq, hw);
4763 priv->irq = -1;
4764 }
4765
4766 /* Stop finalize join worker */
4767 cancel_work_sync(&priv->finalize_join_worker);
4768 cancel_work_sync(&priv->watchdog_ba_handle);
4769 if (priv->beacon_skb != NULL)
4770 dev_kfree_skb(priv->beacon_skb);
4771
4772 /* Stop TX reclaim and RX tasklets. */
4773 tasklet_disable(&priv->poll_tx_task);
4774 tasklet_disable(&priv->poll_rx_task);
4775
4776 /* Return all skbs to mac80211 */
4777 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4778 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4779}
4780
4781static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4782
4783static int mwl8k_add_interface(struct ieee80211_hw *hw,
4784 struct ieee80211_vif *vif)
4785{
4786 struct mwl8k_priv *priv = hw->priv;
4787 struct mwl8k_vif *mwl8k_vif;
4788 u32 macids_supported;
4789 int macid, rc;
4790 struct mwl8k_device_info *di;
4791
4792 /*
4793 * Reject interface creation if sniffer mode is active, as
4794 * STA operation is mutually exclusive with hardware sniffer
4795 * mode. (Sniffer mode is only used on STA firmware.)
4796 */
4797 if (priv->sniffer_enabled) {
4798 wiphy_info(hw->wiphy,
4799 "unable to create STA interface because sniffer mode is enabled\n");
4800 return -EINVAL;
4801 }
4802
4803 di = priv->device_info;
4804 switch (vif->type) {
4805 case NL80211_IFTYPE_AP:
4806 if (!priv->ap_fw && di->fw_image_ap) {
4807 /* we must load the ap fw to meet this request */
4808 if (!list_empty(&priv->vif_list))
4809 return -EBUSY;
4810 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4811 if (rc)
4812 return rc;
4813 }
4814 macids_supported = priv->ap_macids_supported;
4815 break;
4816 case NL80211_IFTYPE_STATION:
4817 if (priv->ap_fw && di->fw_image_sta) {
4818 if (!list_empty(&priv->vif_list)) {
4819 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4820 "Adding STA interface for WDS");
4821 } else {
4822 /* we must load the sta fw to
4823 * meet this request.
4824 */
4825 rc = mwl8k_reload_firmware(hw,
4826 di->fw_image_sta);
4827 if (rc)
4828 return rc;
4829 }
4830 }
4831 macids_supported = priv->sta_macids_supported;
4832 break;
4833 default:
4834 return -EINVAL;
4835 }
4836
4837 macid = ffs(macids_supported & ~priv->macids_used);
4838 if (!macid--)
4839 return -EBUSY;
4840
4841 /* Setup driver private area. */
4842 mwl8k_vif = MWL8K_VIF(vif);
4843 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4844 mwl8k_vif->vif = vif;
4845 mwl8k_vif->macid = macid;
4846 mwl8k_vif->seqno = 0;
4847 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4848 mwl8k_vif->is_hw_crypto_enabled = false;
4849
4850 /* Set the mac address. */
4851 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4852
4853 if (vif->type == NL80211_IFTYPE_AP)
4854 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4855
4856 priv->macids_used |= 1 << mwl8k_vif->macid;
4857 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4858
4859 return 0;
4860}
4861
4862static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4863{
4864 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4865 if (!priv->macids_used)
4866 return;
4867
4868 priv->macids_used &= ~(1 << vif->macid);
4869 list_del(&vif->list);
4870}
4871
4872static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4873 struct ieee80211_vif *vif)
4874{
4875 struct mwl8k_priv *priv = hw->priv;
4876 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4877
4878 if (vif->type == NL80211_IFTYPE_AP)
4879 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4880
4881 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4882
4883 mwl8k_remove_vif(priv, mwl8k_vif);
4884}
4885
4886static void mwl8k_hw_restart_work(struct work_struct *work)
4887{
4888 struct mwl8k_priv *priv =
4889 container_of(work, struct mwl8k_priv, fw_reload);
4890 struct ieee80211_hw *hw = priv->hw;
4891 struct mwl8k_device_info *di;
4892 int rc;
4893
4894 /* If some command is waiting for a response, clear it */
4895 if (priv->hostcmd_wait != NULL) {
4896 complete(priv->hostcmd_wait);
4897 priv->hostcmd_wait = NULL;
4898 }
4899
4900 priv->hw_restart_owner = current;
4901 di = priv->device_info;
4902 mwl8k_fw_lock(hw);
4903
4904 if (priv->ap_fw)
4905 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4906 else
4907 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4908
4909 if (rc)
4910 goto fail;
4911
4912 priv->hw_restart_owner = NULL;
4913 priv->hw_restart_in_progress = false;
4914
4915 /*
4916 * This unlock will wake up the queues and
4917 * also opens the command path for other
4918 * commands
4919 */
4920 mwl8k_fw_unlock(hw);
4921
4922 ieee80211_restart_hw(hw);
4923
4924 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4925
4926 return;
4927fail:
4928 mwl8k_fw_unlock(hw);
4929
4930 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4931}
4932
4933static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4934{
4935 struct ieee80211_conf *conf = &hw->conf;
4936 struct mwl8k_priv *priv = hw->priv;
4937 int rc;
4938
4939 rc = mwl8k_fw_lock(hw);
4940 if (rc)
4941 return rc;
4942
4943 if (conf->flags & IEEE80211_CONF_IDLE)
4944 rc = mwl8k_cmd_radio_disable(hw);
4945 else
4946 rc = mwl8k_cmd_radio_enable(hw);
4947 if (rc)
4948 goto out;
4949
4950 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4951 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4952 if (rc)
4953 goto out;
4954 }
4955
4956 if (conf->power_level > 18)
4957 conf->power_level = 18;
4958
4959 if (priv->ap_fw) {
4960
4961 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4962 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4963 if (rc)
4964 goto out;
4965 }
4966
4967
4968 } else {
4969 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4970 if (rc)
4971 goto out;
4972 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4973 }
4974
4975out:
4976 mwl8k_fw_unlock(hw);
4977
4978 return rc;
4979}
4980
4981static void
4982mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4983 struct ieee80211_bss_conf *info, u32 changed)
4984{
4985 struct mwl8k_priv *priv = hw->priv;
4986 u32 ap_legacy_rates = 0;
4987 u8 ap_mcs_rates[16];
4988 int rc;
4989
4990 if (mwl8k_fw_lock(hw))
4991 return;
4992
4993 /*
4994 * No need to capture a beacon if we're no longer associated.
4995 */
4996 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4997 priv->capture_beacon = false;
4998
4999 /*
5000 * Get the AP's legacy and MCS rates.
5001 */
5002 if (vif->bss_conf.assoc) {
5003 struct ieee80211_sta *ap;
5004
5005 rcu_read_lock();
5006
5007 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
5008 if (ap == NULL) {
5009 rcu_read_unlock();
5010 goto out;
5011 }
5012
5013 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
5014 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
5015 } else {
5016 ap_legacy_rates =
5017 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
5018 }
5019 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
5020
5021 rcu_read_unlock();
5022
5023 if (changed & BSS_CHANGED_ASSOC) {
5024 if (!priv->ap_fw) {
5025 rc = mwl8k_cmd_set_rate(hw, vif,
5026 ap_legacy_rates,
5027 ap_mcs_rates);
5028 if (rc)
5029 goto out;
5030
5031 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
5032 if (rc)
5033 goto out;
5034 } else {
5035 int idx;
5036 int rate;
5037
5038 /* Use AP firmware specific rate command.
5039 */
5040 idx = ffs(vif->bss_conf.basic_rates);
5041 if (idx)
5042 idx--;
5043
5044 if (hw->conf.chandef.chan->band ==
5045 IEEE80211_BAND_2GHZ)
5046 rate = mwl8k_rates_24[idx].hw_value;
5047 else
5048 rate = mwl8k_rates_50[idx].hw_value;
5049
5050 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5051 }
5052 }
5053 }
5054
5055 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5056 rc = mwl8k_set_radio_preamble(hw,
5057 vif->bss_conf.use_short_preamble);
5058 if (rc)
5059 goto out;
5060 }
5061
5062 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
5063 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
5064 if (rc)
5065 goto out;
5066 }
5067
5068 if (vif->bss_conf.assoc && !priv->ap_fw &&
5069 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
5070 BSS_CHANGED_HT))) {
5071 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
5072 if (rc)
5073 goto out;
5074 }
5075
5076 if (vif->bss_conf.assoc &&
5077 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
5078 /*
5079 * Finalize the join. Tell rx handler to process
5080 * next beacon from our BSSID.
5081 */
5082 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
5083 priv->capture_beacon = true;
5084 }
5085
5086out:
5087 mwl8k_fw_unlock(hw);
5088}
5089
5090static void
5091mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5092 struct ieee80211_bss_conf *info, u32 changed)
5093{
5094 int rc;
5095
5096 if (mwl8k_fw_lock(hw))
5097 return;
5098
5099 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5100 rc = mwl8k_set_radio_preamble(hw,
5101 vif->bss_conf.use_short_preamble);
5102 if (rc)
5103 goto out;
5104 }
5105
5106 if (changed & BSS_CHANGED_BASIC_RATES) {
5107 int idx;
5108 int rate;
5109
5110 /*
5111 * Use lowest supported basic rate for multicasts
5112 * and management frames (such as probe responses --
5113 * beacons will always go out at 1 Mb/s).
5114 */
5115 idx = ffs(vif->bss_conf.basic_rates);
5116 if (idx)
5117 idx--;
5118
5119 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
5120 rate = mwl8k_rates_24[idx].hw_value;
5121 else
5122 rate = mwl8k_rates_50[idx].hw_value;
5123
5124 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5125 }
5126
5127 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
5128 struct sk_buff *skb;
5129
5130 skb = ieee80211_beacon_get(hw, vif);
5131 if (skb != NULL) {
5132 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5133 kfree_skb(skb);
5134 }
5135 }
5136
5137 if (changed & BSS_CHANGED_BEACON_ENABLED)
5138 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5139
5140out:
5141 mwl8k_fw_unlock(hw);
5142}
5143
5144static void
5145mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5146 struct ieee80211_bss_conf *info, u32 changed)
5147{
5148 if (vif->type == NL80211_IFTYPE_STATION)
5149 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5150 if (vif->type == NL80211_IFTYPE_AP)
5151 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5152}
5153
5154static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5155 struct netdev_hw_addr_list *mc_list)
5156{
5157 struct mwl8k_cmd_pkt *cmd;
5158
5159 /*
5160 * Synthesize and return a command packet that programs the
5161 * hardware multicast address filter. At this point we don't
5162 * know whether FIF_ALLMULTI is being requested, but if it is,
5163 * we'll end up throwing this packet away and creating a new
5164 * one in mwl8k_configure_filter().
5165 */
5166 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5167
5168 return (unsigned long)cmd;
5169}
5170
5171static int
5172mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5173 unsigned int changed_flags,
5174 unsigned int *total_flags)
5175{
5176 struct mwl8k_priv *priv = hw->priv;
5177
5178 /*
5179 * Hardware sniffer mode is mutually exclusive with STA
5180 * operation, so refuse to enable sniffer mode if a STA
5181 * interface is active.
5182 */
5183 if (!list_empty(&priv->vif_list)) {
5184 if (net_ratelimit())
5185 wiphy_info(hw->wiphy,
5186 "not enabling sniffer mode because STA interface is active\n");
5187 return 0;
5188 }
5189
5190 if (!priv->sniffer_enabled) {
5191 if (mwl8k_cmd_enable_sniffer(hw, 1))
5192 return 0;
5193 priv->sniffer_enabled = true;
5194 }
5195
5196 *total_flags &= FIF_ALLMULTI |
5197 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5198 FIF_OTHER_BSS;
5199
5200 return 1;
5201}
5202
5203static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5204{
5205 if (!list_empty(&priv->vif_list))
5206 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5207
5208 return NULL;
5209}
5210
5211static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5212 unsigned int changed_flags,
5213 unsigned int *total_flags,
5214 u64 multicast)
5215{
5216 struct mwl8k_priv *priv = hw->priv;
5217 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5218
5219 /*
5220 * AP firmware doesn't allow fine-grained control over
5221 * the receive filter.
5222 */
5223 if (priv->ap_fw) {
5224 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5225 kfree(cmd);
5226 return;
5227 }
5228
5229 /*
5230 * Enable hardware sniffer mode if FIF_CONTROL or
5231 * FIF_OTHER_BSS is requested.
5232 */
5233 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5234 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5235 kfree(cmd);
5236 return;
5237 }
5238
5239 /* Clear unsupported feature flags */
5240 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5241
5242 if (mwl8k_fw_lock(hw)) {
5243 kfree(cmd);
5244 return;
5245 }
5246
5247 if (priv->sniffer_enabled) {
5248 mwl8k_cmd_enable_sniffer(hw, 0);
5249 priv->sniffer_enabled = false;
5250 }
5251
5252 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5253 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5254 /*
5255 * Disable the BSS filter.
5256 */
5257 mwl8k_cmd_set_pre_scan(hw);
5258 } else {
5259 struct mwl8k_vif *mwl8k_vif;
5260 const u8 *bssid;
5261
5262 /*
5263 * Enable the BSS filter.
5264 *
5265 * If there is an active STA interface, use that
5266 * interface's BSSID, otherwise use a dummy one
5267 * (where the OUI part needs to be nonzero for
5268 * the BSSID to be accepted by POST_SCAN).
5269 */
5270 mwl8k_vif = mwl8k_first_vif(priv);
5271 if (mwl8k_vif != NULL)
5272 bssid = mwl8k_vif->vif->bss_conf.bssid;
5273 else
5274 bssid = "\x01\x00\x00\x00\x00\x00";
5275
5276 mwl8k_cmd_set_post_scan(hw, bssid);
5277 }
5278 }
5279
5280 /*
5281 * If FIF_ALLMULTI is being requested, throw away the command
5282 * packet that ->prepare_multicast() built and replace it with
5283 * a command packet that enables reception of all multicast
5284 * packets.
5285 */
5286 if (*total_flags & FIF_ALLMULTI) {
5287 kfree(cmd);
5288 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5289 }
5290
5291 if (cmd != NULL) {
5292 mwl8k_post_cmd(hw, cmd);
5293 kfree(cmd);
5294 }
5295
5296 mwl8k_fw_unlock(hw);
5297}
5298
5299static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5300{
5301 return mwl8k_cmd_set_rts_threshold(hw, value);
5302}
5303
5304static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5305 struct ieee80211_vif *vif,
5306 struct ieee80211_sta *sta)
5307{
5308 struct mwl8k_priv *priv = hw->priv;
5309
5310 if (priv->ap_fw)
5311 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5312 else
5313 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5314}
5315
5316static int mwl8k_sta_add(struct ieee80211_hw *hw,
5317 struct ieee80211_vif *vif,
5318 struct ieee80211_sta *sta)
5319{
5320 struct mwl8k_priv *priv = hw->priv;
5321 int ret;
5322 int i;
5323 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5324 struct ieee80211_key_conf *key;
5325
5326 if (!priv->ap_fw) {
5327 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5328 if (ret >= 0) {
5329 MWL8K_STA(sta)->peer_id = ret;
5330 if (sta->ht_cap.ht_supported)
5331 MWL8K_STA(sta)->is_ampdu_allowed = true;
5332 ret = 0;
5333 }
5334
5335 } else {
5336 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5337 }
5338
5339 for (i = 0; i < NUM_WEP_KEYS; i++) {
5340 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5341 if (mwl8k_vif->wep_key_conf[i].enabled)
5342 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5343 }
5344 return ret;
5345}
5346
5347static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5348 struct ieee80211_vif *vif, u16 queue,
5349 const struct ieee80211_tx_queue_params *params)
5350{
5351 struct mwl8k_priv *priv = hw->priv;
5352 int rc;
5353
5354 rc = mwl8k_fw_lock(hw);
5355 if (!rc) {
5356 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5357 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5358
5359 if (!priv->wmm_enabled)
5360 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5361
5362 if (!rc) {
5363 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5364 rc = mwl8k_cmd_set_edca_params(hw, q,
5365 params->cw_min,
5366 params->cw_max,
5367 params->aifs,
5368 params->txop);
5369 }
5370
5371 mwl8k_fw_unlock(hw);
5372 }
5373
5374 return rc;
5375}
5376
5377static int mwl8k_get_stats(struct ieee80211_hw *hw,
5378 struct ieee80211_low_level_stats *stats)
5379{
5380 return mwl8k_cmd_get_stat(hw, stats);
5381}
5382
5383static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5384 struct survey_info *survey)
5385{
5386 struct mwl8k_priv *priv = hw->priv;
5387 struct ieee80211_conf *conf = &hw->conf;
5388 struct ieee80211_supported_band *sband;
5389
5390 if (priv->ap_fw) {
5391 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
5392
5393 if (sband && idx >= sband->n_channels) {
5394 idx -= sband->n_channels;
5395 sband = NULL;
5396 }
5397
5398 if (!sband)
5399 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
5400
5401 if (!sband || idx >= sband->n_channels)
5402 return -ENOENT;
5403
5404 memcpy(survey, &priv->survey[idx], sizeof(*survey));
5405 survey->channel = &sband->channels[idx];
5406
5407 return 0;
5408 }
5409
5410 if (idx != 0)
5411 return -ENOENT;
5412
5413 survey->channel = conf->chandef.chan;
5414 survey->filled = SURVEY_INFO_NOISE_DBM;
5415 survey->noise = priv->noise;
5416
5417 return 0;
5418}
5419
5420#define MAX_AMPDU_ATTEMPTS 5
5421
5422static int
5423mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5424 struct ieee80211_ampdu_params *params)
5425{
5426 struct ieee80211_sta *sta = params->sta;
5427 enum ieee80211_ampdu_mlme_action action = params->action;
5428 u16 tid = params->tid;
5429 u16 *ssn = ¶ms->ssn;
5430 u8 buf_size = params->buf_size;
5431 int i, rc = 0;
5432 struct mwl8k_priv *priv = hw->priv;
5433 struct mwl8k_ampdu_stream *stream;
5434 u8 *addr = sta->addr, idx;
5435 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5436
5437 if (!ieee80211_hw_check(hw, AMPDU_AGGREGATION))
5438 return -ENOTSUPP;
5439
5440 spin_lock(&priv->stream_lock);
5441 stream = mwl8k_lookup_stream(hw, addr, tid);
5442
5443 switch (action) {
5444 case IEEE80211_AMPDU_RX_START:
5445 case IEEE80211_AMPDU_RX_STOP:
5446 break;
5447 case IEEE80211_AMPDU_TX_START:
5448 /* By the time we get here the hw queues may contain outgoing
5449 * packets for this RA/TID that are not part of this BA
5450 * session. The hw will assign sequence numbers to these
5451 * packets as they go out. So if we query the hw for its next
5452 * sequence number and use that for the SSN here, it may end up
5453 * being wrong, which will lead to sequence number mismatch at
5454 * the recipient. To avoid this, we reset the sequence number
5455 * to O for the first MPDU in this BA stream.
5456 */
5457 *ssn = 0;
5458 if (stream == NULL) {
5459 /* This means that somebody outside this driver called
5460 * ieee80211_start_tx_ba_session. This is unexpected
5461 * because we do our own rate control. Just warn and
5462 * move on.
5463 */
5464 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5465 "Proceeding anyway.\n", __func__);
5466 stream = mwl8k_add_stream(hw, sta, tid);
5467 }
5468 if (stream == NULL) {
5469 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5470 rc = -EBUSY;
5471 break;
5472 }
5473 stream->state = AMPDU_STREAM_IN_PROGRESS;
5474
5475 /* Release the lock before we do the time consuming stuff */
5476 spin_unlock(&priv->stream_lock);
5477 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5478
5479 /* Check if link is still valid */
5480 if (!sta_info->is_ampdu_allowed) {
5481 spin_lock(&priv->stream_lock);
5482 mwl8k_remove_stream(hw, stream);
5483 spin_unlock(&priv->stream_lock);
5484 return -EBUSY;
5485 }
5486
5487 rc = mwl8k_check_ba(hw, stream, vif);
5488
5489 /* If HW restart is in progress mwl8k_post_cmd will
5490 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5491 * such cases
5492 */
5493 if (!rc || rc == -EBUSY)
5494 break;
5495 /*
5496 * HW queues take time to be flushed, give them
5497 * sufficient time
5498 */
5499
5500 msleep(1000);
5501 }
5502 spin_lock(&priv->stream_lock);
5503 if (rc) {
5504 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5505 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5506 mwl8k_remove_stream(hw, stream);
5507 rc = -EBUSY;
5508 break;
5509 }
5510 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5511 break;
5512 case IEEE80211_AMPDU_TX_STOP_CONT:
5513 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5514 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5515 if (stream) {
5516 if (stream->state == AMPDU_STREAM_ACTIVE) {
5517 idx = stream->idx;
5518 spin_unlock(&priv->stream_lock);
5519 mwl8k_destroy_ba(hw, idx);
5520 spin_lock(&priv->stream_lock);
5521 }
5522 mwl8k_remove_stream(hw, stream);
5523 }
5524 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5525 break;
5526 case IEEE80211_AMPDU_TX_OPERATIONAL:
5527 BUG_ON(stream == NULL);
5528 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5529 spin_unlock(&priv->stream_lock);
5530 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5531 spin_lock(&priv->stream_lock);
5532 if (!rc)
5533 stream->state = AMPDU_STREAM_ACTIVE;
5534 else {
5535 idx = stream->idx;
5536 spin_unlock(&priv->stream_lock);
5537 mwl8k_destroy_ba(hw, idx);
5538 spin_lock(&priv->stream_lock);
5539 wiphy_debug(hw->wiphy,
5540 "Failed adding stream for sta %pM tid %d\n",
5541 addr, tid);
5542 mwl8k_remove_stream(hw, stream);
5543 }
5544 break;
5545
5546 default:
5547 rc = -ENOTSUPP;
5548 }
5549
5550 spin_unlock(&priv->stream_lock);
5551 return rc;
5552}
5553
5554static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
5555 struct ieee80211_vif *vif,
5556 const u8 *mac_addr)
5557{
5558 struct mwl8k_priv *priv = hw->priv;
5559 u8 tmp;
5560
5561 if (!priv->ap_fw)
5562 return;
5563
5564 /* clear all stats */
5565 priv->channel_time = 0;
5566 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5567 ioread32(priv->regs + NOK_CCA_CNT_REG);
5568 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5569
5570 priv->sw_scan_start = true;
5571}
5572
5573static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
5574 struct ieee80211_vif *vif)
5575{
5576 struct mwl8k_priv *priv = hw->priv;
5577 u8 tmp;
5578
5579 if (!priv->ap_fw)
5580 return;
5581
5582 priv->sw_scan_start = false;
5583
5584 /* clear all stats */
5585 priv->channel_time = 0;
5586 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5587 ioread32(priv->regs + NOK_CCA_CNT_REG);
5588 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5589}
5590
5591static const struct ieee80211_ops mwl8k_ops = {
5592 .tx = mwl8k_tx,
5593 .start = mwl8k_start,
5594 .stop = mwl8k_stop,
5595 .add_interface = mwl8k_add_interface,
5596 .remove_interface = mwl8k_remove_interface,
5597 .config = mwl8k_config,
5598 .bss_info_changed = mwl8k_bss_info_changed,
5599 .prepare_multicast = mwl8k_prepare_multicast,
5600 .configure_filter = mwl8k_configure_filter,
5601 .set_key = mwl8k_set_key,
5602 .set_rts_threshold = mwl8k_set_rts_threshold,
5603 .sta_add = mwl8k_sta_add,
5604 .sta_remove = mwl8k_sta_remove,
5605 .conf_tx = mwl8k_conf_tx,
5606 .get_stats = mwl8k_get_stats,
5607 .get_survey = mwl8k_get_survey,
5608 .ampdu_action = mwl8k_ampdu_action,
5609 .sw_scan_start = mwl8k_sw_scan_start,
5610 .sw_scan_complete = mwl8k_sw_scan_complete,
5611};
5612
5613static void mwl8k_finalize_join_worker(struct work_struct *work)
5614{
5615 struct mwl8k_priv *priv =
5616 container_of(work, struct mwl8k_priv, finalize_join_worker);
5617 struct sk_buff *skb = priv->beacon_skb;
5618 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5619 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5620 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5621 mgmt->u.beacon.variable, len);
5622 int dtim_period = 1;
5623
5624 if (tim && tim[1] >= 2)
5625 dtim_period = tim[3];
5626
5627 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5628
5629 dev_kfree_skb(skb);
5630 priv->beacon_skb = NULL;
5631}
5632
5633enum {
5634 MWL8363 = 0,
5635 MWL8687,
5636 MWL8366,
5637 MWL8764,
5638};
5639
5640#define MWL8K_8366_AP_FW_API 3
5641#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5642#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5643
5644#define MWL8K_8764_AP_FW_API 1
5645#define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5646#define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5647
5648static struct mwl8k_device_info mwl8k_info_tbl[] = {
5649 [MWL8363] = {
5650 .part_name = "88w8363",
5651 .helper_image = "mwl8k/helper_8363.fw",
5652 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5653 },
5654 [MWL8687] = {
5655 .part_name = "88w8687",
5656 .helper_image = "mwl8k/helper_8687.fw",
5657 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5658 },
5659 [MWL8366] = {
5660 .part_name = "88w8366",
5661 .helper_image = "mwl8k/helper_8366.fw",
5662 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5663 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5664 .fw_api_ap = MWL8K_8366_AP_FW_API,
5665 .ap_rxd_ops = &rxd_ap_ops,
5666 },
5667 [MWL8764] = {
5668 .part_name = "88w8764",
5669 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5670 .fw_api_ap = MWL8K_8764_AP_FW_API,
5671 .ap_rxd_ops = &rxd_ap_ops,
5672 },
5673};
5674
5675MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5676MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5677MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5678MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5679MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5680MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5681MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5682
5683static const struct pci_device_id mwl8k_pci_id_table[] = {
5684 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5685 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5686 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5687 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5688 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5689 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5690 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5691 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5692 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5693 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5694 { },
5695};
5696MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5697
5698static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5699{
5700 int rc;
5701 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5702 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5703 priv->fw_pref, priv->fw_alt);
5704 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5705 if (rc) {
5706 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5707 pci_name(priv->pdev), priv->fw_alt);
5708 return rc;
5709 }
5710 return 0;
5711}
5712
5713static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5714static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5715{
5716 struct mwl8k_priv *priv = context;
5717 struct mwl8k_device_info *di = priv->device_info;
5718 int rc;
5719
5720 switch (priv->fw_state) {
5721 case FW_STATE_INIT:
5722 if (!fw) {
5723 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5724 pci_name(priv->pdev), di->helper_image);
5725 goto fail;
5726 }
5727 priv->fw_helper = fw;
5728 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5729 true);
5730 if (rc && priv->fw_alt) {
5731 rc = mwl8k_request_alt_fw(priv);
5732 if (rc)
5733 goto fail;
5734 priv->fw_state = FW_STATE_LOADING_ALT;
5735 } else if (rc)
5736 goto fail;
5737 else
5738 priv->fw_state = FW_STATE_LOADING_PREF;
5739 break;
5740
5741 case FW_STATE_LOADING_PREF:
5742 if (!fw) {
5743 if (priv->fw_alt) {
5744 rc = mwl8k_request_alt_fw(priv);
5745 if (rc)
5746 goto fail;
5747 priv->fw_state = FW_STATE_LOADING_ALT;
5748 } else
5749 goto fail;
5750 } else {
5751 priv->fw_ucode = fw;
5752 rc = mwl8k_firmware_load_success(priv);
5753 if (rc)
5754 goto fail;
5755 else
5756 complete(&priv->firmware_loading_complete);
5757 }
5758 break;
5759
5760 case FW_STATE_LOADING_ALT:
5761 if (!fw) {
5762 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5763 pci_name(priv->pdev), di->helper_image);
5764 goto fail;
5765 }
5766 priv->fw_ucode = fw;
5767 rc = mwl8k_firmware_load_success(priv);
5768 if (rc)
5769 goto fail;
5770 else
5771 complete(&priv->firmware_loading_complete);
5772 break;
5773
5774 default:
5775 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5776 MWL8K_NAME, priv->fw_state);
5777 BUG_ON(1);
5778 }
5779
5780 return;
5781
5782fail:
5783 priv->fw_state = FW_STATE_ERROR;
5784 complete(&priv->firmware_loading_complete);
5785 device_release_driver(&priv->pdev->dev);
5786 mwl8k_release_firmware(priv);
5787}
5788
5789#define MAX_RESTART_ATTEMPTS 1
5790static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5791 bool nowait)
5792{
5793 struct mwl8k_priv *priv = hw->priv;
5794 int rc;
5795 int count = MAX_RESTART_ATTEMPTS;
5796
5797retry:
5798 /* Reset firmware and hardware */
5799 mwl8k_hw_reset(priv);
5800
5801 /* Ask userland hotplug daemon for the device firmware */
5802 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5803 if (rc) {
5804 wiphy_err(hw->wiphy, "Firmware files not found\n");
5805 return rc;
5806 }
5807
5808 if (nowait)
5809 return rc;
5810
5811 /* Load firmware into hardware */
5812 rc = mwl8k_load_firmware(hw);
5813 if (rc)
5814 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5815
5816 /* Reclaim memory once firmware is successfully loaded */
5817 mwl8k_release_firmware(priv);
5818
5819 if (rc && count) {
5820 /* FW did not start successfully;
5821 * lets try one more time
5822 */
5823 count--;
5824 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5825 msleep(20);
5826 goto retry;
5827 }
5828
5829 return rc;
5830}
5831
5832static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5833{
5834 struct mwl8k_priv *priv = hw->priv;
5835 int rc = 0;
5836 int i;
5837
5838 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5839 rc = mwl8k_txq_init(hw, i);
5840 if (rc)
5841 break;
5842 if (priv->ap_fw)
5843 iowrite32(priv->txq[i].txd_dma,
5844 priv->sram + priv->txq_offset[i]);
5845 }
5846 return rc;
5847}
5848
5849/* initialize hw after successfully loading a firmware image */
5850static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5851{
5852 struct mwl8k_priv *priv = hw->priv;
5853 int rc = 0;
5854 int i;
5855
5856 if (priv->ap_fw) {
5857 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5858 if (priv->rxd_ops == NULL) {
5859 wiphy_err(hw->wiphy,
5860 "Driver does not have AP firmware image support for this hardware\n");
5861 rc = -ENOENT;
5862 goto err_stop_firmware;
5863 }
5864 } else {
5865 priv->rxd_ops = &rxd_sta_ops;
5866 }
5867
5868 priv->sniffer_enabled = false;
5869 priv->wmm_enabled = false;
5870 priv->pending_tx_pkts = 0;
5871 atomic_set(&priv->watchdog_event_pending, 0);
5872
5873 rc = mwl8k_rxq_init(hw, 0);
5874 if (rc)
5875 goto err_stop_firmware;
5876 rxq_refill(hw, 0, INT_MAX);
5877
5878 /* For the sta firmware, we need to know the dma addresses of tx queues
5879 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5880 * prior to issuing this command. But for the AP case, we learn the
5881 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5882 * case we must initialize the tx queues after.
5883 */
5884 priv->num_ampdu_queues = 0;
5885 if (!priv->ap_fw) {
5886 rc = mwl8k_init_txqs(hw);
5887 if (rc)
5888 goto err_free_queues;
5889 }
5890
5891 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5892 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5893 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5894 MWL8K_A2H_INT_BA_WATCHDOG,
5895 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5896 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5897 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5898
5899 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5900 IRQF_SHARED, MWL8K_NAME, hw);
5901 if (rc) {
5902 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5903 goto err_free_queues;
5904 }
5905
5906 /*
5907 * When hw restart is requested,
5908 * mac80211 will take care of clearing
5909 * the ampdu streams, so do not clear
5910 * the ampdu state here
5911 */
5912 if (!priv->hw_restart_in_progress)
5913 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5914
5915 /*
5916 * Temporarily enable interrupts. Initial firmware host
5917 * commands use interrupts and avoid polling. Disable
5918 * interrupts when done.
5919 */
5920 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5921
5922 /* Get config data, mac addrs etc */
5923 if (priv->ap_fw) {
5924 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5925 if (!rc)
5926 rc = mwl8k_init_txqs(hw);
5927 if (!rc)
5928 rc = mwl8k_cmd_set_hw_spec(hw);
5929 } else {
5930 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5931 }
5932 if (rc) {
5933 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5934 goto err_free_irq;
5935 }
5936
5937 /* Turn radio off */
5938 rc = mwl8k_cmd_radio_disable(hw);
5939 if (rc) {
5940 wiphy_err(hw->wiphy, "Cannot disable\n");
5941 goto err_free_irq;
5942 }
5943
5944 /* Clear MAC address */
5945 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5946 if (rc) {
5947 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5948 goto err_free_irq;
5949 }
5950
5951 /* Configure Antennas */
5952 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5953 if (rc)
5954 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5955 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5956 if (rc)
5957 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5958
5959
5960 /* Disable interrupts */
5961 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5962 free_irq(priv->pdev->irq, hw);
5963
5964 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5965 priv->device_info->part_name,
5966 priv->hw_rev, hw->wiphy->perm_addr,
5967 priv->ap_fw ? "AP" : "STA",
5968 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5969 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5970
5971 return 0;
5972
5973err_free_irq:
5974 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5975 free_irq(priv->pdev->irq, hw);
5976
5977err_free_queues:
5978 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5979 mwl8k_txq_deinit(hw, i);
5980 mwl8k_rxq_deinit(hw, 0);
5981
5982err_stop_firmware:
5983 mwl8k_hw_reset(priv);
5984
5985 return rc;
5986}
5987
5988/*
5989 * invoke mwl8k_reload_firmware to change the firmware image after the device
5990 * has already been registered
5991 */
5992static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5993{
5994 int i, rc = 0;
5995 struct mwl8k_priv *priv = hw->priv;
5996 struct mwl8k_vif *vif, *tmp_vif;
5997
5998 mwl8k_stop(hw);
5999 mwl8k_rxq_deinit(hw, 0);
6000
6001 /*
6002 * All the existing interfaces are re-added by the ieee80211_reconfig;
6003 * which means driver should remove existing interfaces before calling
6004 * ieee80211_restart_hw
6005 */
6006 if (priv->hw_restart_in_progress)
6007 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6008 mwl8k_remove_vif(priv, vif);
6009
6010 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6011 mwl8k_txq_deinit(hw, i);
6012
6013 rc = mwl8k_init_firmware(hw, fw_image, false);
6014 if (rc)
6015 goto fail;
6016
6017 rc = mwl8k_probe_hw(hw);
6018 if (rc)
6019 goto fail;
6020
6021 if (priv->hw_restart_in_progress)
6022 return rc;
6023
6024 rc = mwl8k_start(hw);
6025 if (rc)
6026 goto fail;
6027
6028 rc = mwl8k_config(hw, ~0);
6029 if (rc)
6030 goto fail;
6031
6032 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6033 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
6034 if (rc)
6035 goto fail;
6036 }
6037
6038 return rc;
6039
6040fail:
6041 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6042 return rc;
6043}
6044
6045static const struct ieee80211_iface_limit ap_if_limits[] = {
6046 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
6047 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
6048};
6049
6050static const struct ieee80211_iface_combination ap_if_comb = {
6051 .limits = ap_if_limits,
6052 .n_limits = ARRAY_SIZE(ap_if_limits),
6053 .max_interfaces = 8,
6054 .num_different_channels = 1,
6055};
6056
6057
6058static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6059{
6060 struct ieee80211_hw *hw = priv->hw;
6061 int i, rc;
6062
6063 rc = mwl8k_load_firmware(hw);
6064 mwl8k_release_firmware(priv);
6065 if (rc) {
6066 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6067 return rc;
6068 }
6069
6070 /*
6071 * Extra headroom is the size of the required DMA header
6072 * minus the size of the smallest 802.11 frame (CTS frame).
6073 */
6074 hw->extra_tx_headroom =
6075 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6076
6077 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6078
6079 hw->queues = MWL8K_TX_WMM_QUEUES;
6080
6081 /* Set rssi values to dBm */
6082 ieee80211_hw_set(hw, SIGNAL_DBM);
6083 ieee80211_hw_set(hw, HAS_RATE_CONTROL);
6084
6085 /*
6086 * Ask mac80211 to not to trigger PS mode
6087 * based on PM bit of incoming frames.
6088 */
6089 if (priv->ap_fw)
6090 ieee80211_hw_set(hw, AP_LINK_PS);
6091
6092 hw->vif_data_size = sizeof(struct mwl8k_vif);
6093 hw->sta_data_size = sizeof(struct mwl8k_sta);
6094
6095 priv->macids_used = 0;
6096 INIT_LIST_HEAD(&priv->vif_list);
6097
6098 /* Set default radio state and preamble */
6099 priv->radio_on = false;
6100 priv->radio_short_preamble = false;
6101
6102 /* Finalize join worker */
6103 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6104 /* Handle watchdog ba events */
6105 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6106 /* To reload the firmware if it crashes */
6107 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6108
6109 /* TX reclaim and RX tasklets. */
6110 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
6111 tasklet_disable(&priv->poll_tx_task);
6112 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
6113 tasklet_disable(&priv->poll_rx_task);
6114
6115 /* Power management cookie */
6116 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
6117 if (priv->cookie == NULL)
6118 return -ENOMEM;
6119
6120 mutex_init(&priv->fw_mutex);
6121 priv->fw_mutex_owner = NULL;
6122 priv->fw_mutex_depth = 0;
6123 priv->hostcmd_wait = NULL;
6124
6125 spin_lock_init(&priv->tx_lock);
6126
6127 spin_lock_init(&priv->stream_lock);
6128
6129 priv->tx_wait = NULL;
6130
6131 rc = mwl8k_probe_hw(hw);
6132 if (rc)
6133 goto err_free_cookie;
6134
6135 hw->wiphy->interface_modes = 0;
6136
6137 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6138 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6139 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6140 hw->wiphy->iface_combinations = &ap_if_comb;
6141 hw->wiphy->n_iface_combinations = 1;
6142 }
6143
6144 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6145 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6146
6147 rc = ieee80211_register_hw(hw);
6148 if (rc) {
6149 wiphy_err(hw->wiphy, "Cannot register device\n");
6150 goto err_unprobe_hw;
6151 }
6152
6153 return 0;
6154
6155err_unprobe_hw:
6156 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6157 mwl8k_txq_deinit(hw, i);
6158 mwl8k_rxq_deinit(hw, 0);
6159
6160err_free_cookie:
6161 if (priv->cookie != NULL)
6162 pci_free_consistent(priv->pdev, 4,
6163 priv->cookie, priv->cookie_dma);
6164
6165 return rc;
6166}
6167static int mwl8k_probe(struct pci_dev *pdev,
6168 const struct pci_device_id *id)
6169{
6170 static int printed_version;
6171 struct ieee80211_hw *hw;
6172 struct mwl8k_priv *priv;
6173 struct mwl8k_device_info *di;
6174 int rc;
6175
6176 if (!printed_version) {
6177 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6178 printed_version = 1;
6179 }
6180
6181
6182 rc = pci_enable_device(pdev);
6183 if (rc) {
6184 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6185 MWL8K_NAME);
6186 return rc;
6187 }
6188
6189 rc = pci_request_regions(pdev, MWL8K_NAME);
6190 if (rc) {
6191 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6192 MWL8K_NAME);
6193 goto err_disable_device;
6194 }
6195
6196 pci_set_master(pdev);
6197
6198
6199 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6200 if (hw == NULL) {
6201 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6202 rc = -ENOMEM;
6203 goto err_free_reg;
6204 }
6205
6206 SET_IEEE80211_DEV(hw, &pdev->dev);
6207 pci_set_drvdata(pdev, hw);
6208
6209 priv = hw->priv;
6210 priv->hw = hw;
6211 priv->pdev = pdev;
6212 priv->device_info = &mwl8k_info_tbl[id->driver_data];
6213
6214 if (id->driver_data == MWL8764)
6215 priv->is_8764 = true;
6216
6217 priv->sram = pci_iomap(pdev, 0, 0x10000);
6218 if (priv->sram == NULL) {
6219 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6220 rc = -EIO;
6221 goto err_iounmap;
6222 }
6223
6224 /*
6225 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6226 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6227 */
6228 priv->regs = pci_iomap(pdev, 1, 0x10000);
6229 if (priv->regs == NULL) {
6230 priv->regs = pci_iomap(pdev, 2, 0x10000);
6231 if (priv->regs == NULL) {
6232 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6233 rc = -EIO;
6234 goto err_iounmap;
6235 }
6236 }
6237
6238 /*
6239 * Choose the initial fw image depending on user input. If a second
6240 * image is available, make it the alternative image that will be
6241 * loaded if the first one fails.
6242 */
6243 init_completion(&priv->firmware_loading_complete);
6244 di = priv->device_info;
6245 if (ap_mode_default && di->fw_image_ap) {
6246 priv->fw_pref = di->fw_image_ap;
6247 priv->fw_alt = di->fw_image_sta;
6248 } else if (!ap_mode_default && di->fw_image_sta) {
6249 priv->fw_pref = di->fw_image_sta;
6250 priv->fw_alt = di->fw_image_ap;
6251 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6252 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6253 priv->fw_pref = di->fw_image_sta;
6254 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6255 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6256 priv->fw_pref = di->fw_image_ap;
6257 }
6258 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6259 if (rc)
6260 goto err_stop_firmware;
6261
6262 priv->hw_restart_in_progress = false;
6263
6264 priv->running_bsses = 0;
6265
6266 return rc;
6267
6268err_stop_firmware:
6269 mwl8k_hw_reset(priv);
6270
6271err_iounmap:
6272 if (priv->regs != NULL)
6273 pci_iounmap(pdev, priv->regs);
6274
6275 if (priv->sram != NULL)
6276 pci_iounmap(pdev, priv->sram);
6277
6278 ieee80211_free_hw(hw);
6279
6280err_free_reg:
6281 pci_release_regions(pdev);
6282
6283err_disable_device:
6284 pci_disable_device(pdev);
6285
6286 return rc;
6287}
6288
6289static void mwl8k_remove(struct pci_dev *pdev)
6290{
6291 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6292 struct mwl8k_priv *priv;
6293 int i;
6294
6295 if (hw == NULL)
6296 return;
6297 priv = hw->priv;
6298
6299 wait_for_completion(&priv->firmware_loading_complete);
6300
6301 if (priv->fw_state == FW_STATE_ERROR) {
6302 mwl8k_hw_reset(priv);
6303 goto unmap;
6304 }
6305
6306 ieee80211_stop_queues(hw);
6307
6308 ieee80211_unregister_hw(hw);
6309
6310 /* Remove TX reclaim and RX tasklets. */
6311 tasklet_kill(&priv->poll_tx_task);
6312 tasklet_kill(&priv->poll_rx_task);
6313
6314 /* Stop hardware */
6315 mwl8k_hw_reset(priv);
6316
6317 /* Return all skbs to mac80211 */
6318 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6319 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6320
6321 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6322 mwl8k_txq_deinit(hw, i);
6323
6324 mwl8k_rxq_deinit(hw, 0);
6325
6326 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6327
6328unmap:
6329 pci_iounmap(pdev, priv->regs);
6330 pci_iounmap(pdev, priv->sram);
6331 ieee80211_free_hw(hw);
6332 pci_release_regions(pdev);
6333 pci_disable_device(pdev);
6334}
6335
6336static struct pci_driver mwl8k_driver = {
6337 .name = MWL8K_NAME,
6338 .id_table = mwl8k_pci_id_table,
6339 .probe = mwl8k_probe,
6340 .remove = mwl8k_remove,
6341};
6342
6343module_pci_driver(mwl8k_driver);
6344
6345MODULE_DESCRIPTION(MWL8K_DESC);
6346MODULE_VERSION(MWL8K_VERSION);
6347MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6348MODULE_LICENSE("GPL");