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mwl8k: Check outgoing rate for a station to decide if ampdu can be created
[deliverable/linux.git] / drivers / net / wireless / mwl8k.c
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CommitLineData
1/*
2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
4 *
5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12#include <linux/init.h>
13#include <linux/module.h>
14#include <linux/kernel.h>
15#include <linux/sched.h>
16#include <linux/spinlock.h>
17#include <linux/list.h>
18#include <linux/pci.h>
19#include <linux/delay.h>
20#include <linux/completion.h>
21#include <linux/etherdevice.h>
22#include <linux/slab.h>
23#include <net/mac80211.h>
24#include <linux/moduleparam.h>
25#include <linux/firmware.h>
26#include <linux/workqueue.h>
27
28#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29#define MWL8K_NAME KBUILD_MODNAME
30#define MWL8K_VERSION "0.12"
31
32/* Module parameters */
33static unsigned 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#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
78 MWL8K_A2H_INT_CHNL_SWITCHED | \
79 MWL8K_A2H_INT_QUEUE_EMPTY | \
80 MWL8K_A2H_INT_RADAR_DETECT | \
81 MWL8K_A2H_INT_RADIO_ON | \
82 MWL8K_A2H_INT_RADIO_OFF | \
83 MWL8K_A2H_INT_MAC_EVENT | \
84 MWL8K_A2H_INT_OPC_DONE | \
85 MWL8K_A2H_INT_RX_READY | \
86 MWL8K_A2H_INT_TX_DONE | \
87 MWL8K_A2H_INT_BA_WATCHDOG)
88
89#define MWL8K_RX_QUEUES 1
90#define MWL8K_TX_WMM_QUEUES 4
91#define MWL8K_MAX_AMPDU_QUEUES 8
92#define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
93#define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
94
95struct rxd_ops {
96 int rxd_size;
97 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
98 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
99 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
100 __le16 *qos, s8 *noise);
101};
102
103struct mwl8k_device_info {
104 char *part_name;
105 char *helper_image;
106 char *fw_image_sta;
107 char *fw_image_ap;
108 struct rxd_ops *ap_rxd_ops;
109 u32 fw_api_ap;
110};
111
112struct mwl8k_rx_queue {
113 int rxd_count;
114
115 /* hw receives here */
116 int head;
117
118 /* refill descs here */
119 int tail;
120
121 void *rxd;
122 dma_addr_t rxd_dma;
123 struct {
124 struct sk_buff *skb;
125 DEFINE_DMA_UNMAP_ADDR(dma);
126 } *buf;
127};
128
129struct mwl8k_tx_queue {
130 /* hw transmits here */
131 int head;
132
133 /* sw appends here */
134 int tail;
135
136 unsigned int len;
137 struct mwl8k_tx_desc *txd;
138 dma_addr_t txd_dma;
139 struct sk_buff **skb;
140};
141
142enum {
143 AMPDU_NO_STREAM,
144 AMPDU_STREAM_NEW,
145 AMPDU_STREAM_IN_PROGRESS,
146 AMPDU_STREAM_ACTIVE,
147};
148
149struct mwl8k_ampdu_stream {
150 struct ieee80211_sta *sta;
151 u8 tid;
152 u8 state;
153 u8 idx;
154 u8 txq_idx; /* index of this stream in priv->txq */
155};
156
157struct mwl8k_priv {
158 struct ieee80211_hw *hw;
159 struct pci_dev *pdev;
160
161 struct mwl8k_device_info *device_info;
162
163 void __iomem *sram;
164 void __iomem *regs;
165
166 /* firmware */
167 const struct firmware *fw_helper;
168 const struct firmware *fw_ucode;
169
170 /* hardware/firmware parameters */
171 bool ap_fw;
172 struct rxd_ops *rxd_ops;
173 struct ieee80211_supported_band band_24;
174 struct ieee80211_channel channels_24[14];
175 struct ieee80211_rate rates_24[14];
176 struct ieee80211_supported_band band_50;
177 struct ieee80211_channel channels_50[4];
178 struct ieee80211_rate rates_50[9];
179 u32 ap_macids_supported;
180 u32 sta_macids_supported;
181
182 /* Ampdu stream information */
183 u8 num_ampdu_queues;
184 spinlock_t stream_lock;
185 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
186 struct work_struct watchdog_ba_handle;
187
188 /* firmware access */
189 struct mutex fw_mutex;
190 struct task_struct *fw_mutex_owner;
191 int fw_mutex_depth;
192 struct completion *hostcmd_wait;
193
194 /* lock held over TX and TX reap */
195 spinlock_t tx_lock;
196
197 /* TX quiesce completion, protected by fw_mutex and tx_lock */
198 struct completion *tx_wait;
199
200 /* List of interfaces. */
201 u32 macids_used;
202 struct list_head vif_list;
203
204 /* power management status cookie from firmware */
205 u32 *cookie;
206 dma_addr_t cookie_dma;
207
208 u16 num_mcaddrs;
209 u8 hw_rev;
210 u32 fw_rev;
211
212 /*
213 * Running count of TX packets in flight, to avoid
214 * iterating over the transmit rings each time.
215 */
216 int pending_tx_pkts;
217
218 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
219 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
220 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
221
222 bool radio_on;
223 bool radio_short_preamble;
224 bool sniffer_enabled;
225 bool wmm_enabled;
226
227 /* XXX need to convert this to handle multiple interfaces */
228 bool capture_beacon;
229 u8 capture_bssid[ETH_ALEN];
230 struct sk_buff *beacon_skb;
231
232 /*
233 * This FJ worker has to be global as it is scheduled from the
234 * RX handler. At this point we don't know which interface it
235 * belongs to until the list of bssids waiting to complete join
236 * is checked.
237 */
238 struct work_struct finalize_join_worker;
239
240 /* Tasklet to perform TX reclaim. */
241 struct tasklet_struct poll_tx_task;
242
243 /* Tasklet to perform RX. */
244 struct tasklet_struct poll_rx_task;
245
246 /* Most recently reported noise in dBm */
247 s8 noise;
248
249 /*
250 * preserve the queue configurations so they can be restored if/when
251 * the firmware image is swapped.
252 */
253 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
254
255 /* async firmware loading state */
256 unsigned fw_state;
257 char *fw_pref;
258 char *fw_alt;
259 struct completion firmware_loading_complete;
260};
261
262#define MAX_WEP_KEY_LEN 13
263#define NUM_WEP_KEYS 4
264
265/* Per interface specific private data */
266struct mwl8k_vif {
267 struct list_head list;
268 struct ieee80211_vif *vif;
269
270 /* Firmware macid for this vif. */
271 int macid;
272
273 /* Non AMPDU sequence number assigned by driver. */
274 u16 seqno;
275
276 /* Saved WEP keys */
277 struct {
278 u8 enabled;
279 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
280 } wep_key_conf[NUM_WEP_KEYS];
281
282 /* BSSID */
283 u8 bssid[ETH_ALEN];
284
285 /* A flag to indicate is HW crypto is enabled for this bssid */
286 bool is_hw_crypto_enabled;
287};
288#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
289#define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
290
291struct mwl8k_sta {
292 /* Index into station database. Returned by UPDATE_STADB. */
293 u8 peer_id;
294 u8 is_ampdu_allowed;
295};
296#define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
297
298static const struct ieee80211_channel mwl8k_channels_24[] = {
299 { .center_freq = 2412, .hw_value = 1, },
300 { .center_freq = 2417, .hw_value = 2, },
301 { .center_freq = 2422, .hw_value = 3, },
302 { .center_freq = 2427, .hw_value = 4, },
303 { .center_freq = 2432, .hw_value = 5, },
304 { .center_freq = 2437, .hw_value = 6, },
305 { .center_freq = 2442, .hw_value = 7, },
306 { .center_freq = 2447, .hw_value = 8, },
307 { .center_freq = 2452, .hw_value = 9, },
308 { .center_freq = 2457, .hw_value = 10, },
309 { .center_freq = 2462, .hw_value = 11, },
310 { .center_freq = 2467, .hw_value = 12, },
311 { .center_freq = 2472, .hw_value = 13, },
312 { .center_freq = 2484, .hw_value = 14, },
313};
314
315static const struct ieee80211_rate mwl8k_rates_24[] = {
316 { .bitrate = 10, .hw_value = 2, },
317 { .bitrate = 20, .hw_value = 4, },
318 { .bitrate = 55, .hw_value = 11, },
319 { .bitrate = 110, .hw_value = 22, },
320 { .bitrate = 220, .hw_value = 44, },
321 { .bitrate = 60, .hw_value = 12, },
322 { .bitrate = 90, .hw_value = 18, },
323 { .bitrate = 120, .hw_value = 24, },
324 { .bitrate = 180, .hw_value = 36, },
325 { .bitrate = 240, .hw_value = 48, },
326 { .bitrate = 360, .hw_value = 72, },
327 { .bitrate = 480, .hw_value = 96, },
328 { .bitrate = 540, .hw_value = 108, },
329 { .bitrate = 720, .hw_value = 144, },
330};
331
332static const struct ieee80211_channel mwl8k_channels_50[] = {
333 { .center_freq = 5180, .hw_value = 36, },
334 { .center_freq = 5200, .hw_value = 40, },
335 { .center_freq = 5220, .hw_value = 44, },
336 { .center_freq = 5240, .hw_value = 48, },
337};
338
339static const struct ieee80211_rate mwl8k_rates_50[] = {
340 { .bitrate = 60, .hw_value = 12, },
341 { .bitrate = 90, .hw_value = 18, },
342 { .bitrate = 120, .hw_value = 24, },
343 { .bitrate = 180, .hw_value = 36, },
344 { .bitrate = 240, .hw_value = 48, },
345 { .bitrate = 360, .hw_value = 72, },
346 { .bitrate = 480, .hw_value = 96, },
347 { .bitrate = 540, .hw_value = 108, },
348 { .bitrate = 720, .hw_value = 144, },
349};
350
351/* Set or get info from Firmware */
352#define MWL8K_CMD_GET 0x0000
353#define MWL8K_CMD_SET 0x0001
354#define MWL8K_CMD_SET_LIST 0x0002
355
356/* Firmware command codes */
357#define MWL8K_CMD_CODE_DNLD 0x0001
358#define MWL8K_CMD_GET_HW_SPEC 0x0003
359#define MWL8K_CMD_SET_HW_SPEC 0x0004
360#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
361#define MWL8K_CMD_GET_STAT 0x0014
362#define MWL8K_CMD_RADIO_CONTROL 0x001c
363#define MWL8K_CMD_RF_TX_POWER 0x001e
364#define MWL8K_CMD_TX_POWER 0x001f
365#define MWL8K_CMD_RF_ANTENNA 0x0020
366#define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
367#define MWL8K_CMD_SET_PRE_SCAN 0x0107
368#define MWL8K_CMD_SET_POST_SCAN 0x0108
369#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
370#define MWL8K_CMD_SET_AID 0x010d
371#define MWL8K_CMD_SET_RATE 0x0110
372#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
373#define MWL8K_CMD_RTS_THRESHOLD 0x0113
374#define MWL8K_CMD_SET_SLOT 0x0114
375#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
376#define MWL8K_CMD_SET_WMM_MODE 0x0123
377#define MWL8K_CMD_MIMO_CONFIG 0x0125
378#define MWL8K_CMD_USE_FIXED_RATE 0x0126
379#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
380#define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
381#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
382#define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
383#define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
384#define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
385#define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
386#define MWL8K_CMD_UPDATE_STADB 0x1123
387#define MWL8K_CMD_BASTREAM 0x1125
388
389static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
390{
391 u16 command = le16_to_cpu(cmd);
392
393#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
394 snprintf(buf, bufsize, "%s", #x);\
395 return buf;\
396 } while (0)
397 switch (command & ~0x8000) {
398 MWL8K_CMDNAME(CODE_DNLD);
399 MWL8K_CMDNAME(GET_HW_SPEC);
400 MWL8K_CMDNAME(SET_HW_SPEC);
401 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
402 MWL8K_CMDNAME(GET_STAT);
403 MWL8K_CMDNAME(RADIO_CONTROL);
404 MWL8K_CMDNAME(RF_TX_POWER);
405 MWL8K_CMDNAME(TX_POWER);
406 MWL8K_CMDNAME(RF_ANTENNA);
407 MWL8K_CMDNAME(SET_BEACON);
408 MWL8K_CMDNAME(SET_PRE_SCAN);
409 MWL8K_CMDNAME(SET_POST_SCAN);
410 MWL8K_CMDNAME(SET_RF_CHANNEL);
411 MWL8K_CMDNAME(SET_AID);
412 MWL8K_CMDNAME(SET_RATE);
413 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
414 MWL8K_CMDNAME(RTS_THRESHOLD);
415 MWL8K_CMDNAME(SET_SLOT);
416 MWL8K_CMDNAME(SET_EDCA_PARAMS);
417 MWL8K_CMDNAME(SET_WMM_MODE);
418 MWL8K_CMDNAME(MIMO_CONFIG);
419 MWL8K_CMDNAME(USE_FIXED_RATE);
420 MWL8K_CMDNAME(ENABLE_SNIFFER);
421 MWL8K_CMDNAME(SET_MAC_ADDR);
422 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
423 MWL8K_CMDNAME(BSS_START);
424 MWL8K_CMDNAME(SET_NEW_STN);
425 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
426 MWL8K_CMDNAME(UPDATE_STADB);
427 MWL8K_CMDNAME(BASTREAM);
428 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
429 default:
430 snprintf(buf, bufsize, "0x%x", cmd);
431 }
432#undef MWL8K_CMDNAME
433
434 return buf;
435}
436
437/* Hardware and firmware reset */
438static void mwl8k_hw_reset(struct mwl8k_priv *priv)
439{
440 iowrite32(MWL8K_H2A_INT_RESET,
441 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
442 iowrite32(MWL8K_H2A_INT_RESET,
443 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
444 msleep(20);
445}
446
447/* Release fw image */
448static void mwl8k_release_fw(const struct firmware **fw)
449{
450 if (*fw == NULL)
451 return;
452 release_firmware(*fw);
453 *fw = NULL;
454}
455
456static void mwl8k_release_firmware(struct mwl8k_priv *priv)
457{
458 mwl8k_release_fw(&priv->fw_ucode);
459 mwl8k_release_fw(&priv->fw_helper);
460}
461
462/* states for asynchronous f/w loading */
463static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
464enum {
465 FW_STATE_INIT = 0,
466 FW_STATE_LOADING_PREF,
467 FW_STATE_LOADING_ALT,
468 FW_STATE_ERROR,
469};
470
471/* Request fw image */
472static int mwl8k_request_fw(struct mwl8k_priv *priv,
473 const char *fname, const struct firmware **fw,
474 bool nowait)
475{
476 /* release current image */
477 if (*fw != NULL)
478 mwl8k_release_fw(fw);
479
480 if (nowait)
481 return request_firmware_nowait(THIS_MODULE, 1, fname,
482 &priv->pdev->dev, GFP_KERNEL,
483 priv, mwl8k_fw_state_machine);
484 else
485 return request_firmware(fw, fname, &priv->pdev->dev);
486}
487
488static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
489 bool nowait)
490{
491 struct mwl8k_device_info *di = priv->device_info;
492 int rc;
493
494 if (di->helper_image != NULL) {
495 if (nowait)
496 rc = mwl8k_request_fw(priv, di->helper_image,
497 &priv->fw_helper, true);
498 else
499 rc = mwl8k_request_fw(priv, di->helper_image,
500 &priv->fw_helper, false);
501 if (rc)
502 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
503 pci_name(priv->pdev), di->helper_image);
504
505 if (rc || nowait)
506 return rc;
507 }
508
509 if (nowait) {
510 /*
511 * if we get here, no helper image is needed. Skip the
512 * FW_STATE_INIT state.
513 */
514 priv->fw_state = FW_STATE_LOADING_PREF;
515 rc = mwl8k_request_fw(priv, fw_image,
516 &priv->fw_ucode,
517 true);
518 } else
519 rc = mwl8k_request_fw(priv, fw_image,
520 &priv->fw_ucode, false);
521 if (rc) {
522 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
523 pci_name(priv->pdev), fw_image);
524 mwl8k_release_fw(&priv->fw_helper);
525 return rc;
526 }
527
528 return 0;
529}
530
531struct mwl8k_cmd_pkt {
532 __le16 code;
533 __le16 length;
534 __u8 seq_num;
535 __u8 macid;
536 __le16 result;
537 char payload[0];
538} __packed;
539
540/*
541 * Firmware loading.
542 */
543static int
544mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
545{
546 void __iomem *regs = priv->regs;
547 dma_addr_t dma_addr;
548 int loops;
549
550 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
551 if (pci_dma_mapping_error(priv->pdev, dma_addr))
552 return -ENOMEM;
553
554 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
555 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
556 iowrite32(MWL8K_H2A_INT_DOORBELL,
557 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
558 iowrite32(MWL8K_H2A_INT_DUMMY,
559 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
560
561 loops = 1000;
562 do {
563 u32 int_code;
564
565 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
566 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
567 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
568 break;
569 }
570
571 cond_resched();
572 udelay(1);
573 } while (--loops);
574
575 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
576
577 return loops ? 0 : -ETIMEDOUT;
578}
579
580static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
581 const u8 *data, size_t length)
582{
583 struct mwl8k_cmd_pkt *cmd;
584 int done;
585 int rc = 0;
586
587 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
588 if (cmd == NULL)
589 return -ENOMEM;
590
591 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
592 cmd->seq_num = 0;
593 cmd->macid = 0;
594 cmd->result = 0;
595
596 done = 0;
597 while (length) {
598 int block_size = length > 256 ? 256 : length;
599
600 memcpy(cmd->payload, data + done, block_size);
601 cmd->length = cpu_to_le16(block_size);
602
603 rc = mwl8k_send_fw_load_cmd(priv, cmd,
604 sizeof(*cmd) + block_size);
605 if (rc)
606 break;
607
608 done += block_size;
609 length -= block_size;
610 }
611
612 if (!rc) {
613 cmd->length = 0;
614 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
615 }
616
617 kfree(cmd);
618
619 return rc;
620}
621
622static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
623 const u8 *data, size_t length)
624{
625 unsigned char *buffer;
626 int may_continue, rc = 0;
627 u32 done, prev_block_size;
628
629 buffer = kmalloc(1024, GFP_KERNEL);
630 if (buffer == NULL)
631 return -ENOMEM;
632
633 done = 0;
634 prev_block_size = 0;
635 may_continue = 1000;
636 while (may_continue > 0) {
637 u32 block_size;
638
639 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
640 if (block_size & 1) {
641 block_size &= ~1;
642 may_continue--;
643 } else {
644 done += prev_block_size;
645 length -= prev_block_size;
646 }
647
648 if (block_size > 1024 || block_size > length) {
649 rc = -EOVERFLOW;
650 break;
651 }
652
653 if (length == 0) {
654 rc = 0;
655 break;
656 }
657
658 if (block_size == 0) {
659 rc = -EPROTO;
660 may_continue--;
661 udelay(1);
662 continue;
663 }
664
665 prev_block_size = block_size;
666 memcpy(buffer, data + done, block_size);
667
668 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
669 if (rc)
670 break;
671 }
672
673 if (!rc && length != 0)
674 rc = -EREMOTEIO;
675
676 kfree(buffer);
677
678 return rc;
679}
680
681static int mwl8k_load_firmware(struct ieee80211_hw *hw)
682{
683 struct mwl8k_priv *priv = hw->priv;
684 const struct firmware *fw = priv->fw_ucode;
685 int rc;
686 int loops;
687
688 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
689 const struct firmware *helper = priv->fw_helper;
690
691 if (helper == NULL) {
692 printk(KERN_ERR "%s: helper image needed but none "
693 "given\n", pci_name(priv->pdev));
694 return -EINVAL;
695 }
696
697 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
698 if (rc) {
699 printk(KERN_ERR "%s: unable to load firmware "
700 "helper image\n", pci_name(priv->pdev));
701 return rc;
702 }
703 msleep(5);
704
705 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
706 } else {
707 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
708 }
709
710 if (rc) {
711 printk(KERN_ERR "%s: unable to load firmware image\n",
712 pci_name(priv->pdev));
713 return rc;
714 }
715
716 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
717
718 loops = 500000;
719 do {
720 u32 ready_code;
721
722 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
723 if (ready_code == MWL8K_FWAP_READY) {
724 priv->ap_fw = 1;
725 break;
726 } else if (ready_code == MWL8K_FWSTA_READY) {
727 priv->ap_fw = 0;
728 break;
729 }
730
731 cond_resched();
732 udelay(1);
733 } while (--loops);
734
735 return loops ? 0 : -ETIMEDOUT;
736}
737
738
739/* DMA header used by firmware and hardware. */
740struct mwl8k_dma_data {
741 __le16 fwlen;
742 struct ieee80211_hdr wh;
743 char data[0];
744} __packed;
745
746/* Routines to add/remove DMA header from skb. */
747static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
748{
749 struct mwl8k_dma_data *tr;
750 int hdrlen;
751
752 tr = (struct mwl8k_dma_data *)skb->data;
753 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
754
755 if (hdrlen != sizeof(tr->wh)) {
756 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
757 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
758 *((__le16 *)(tr->data - 2)) = qos;
759 } else {
760 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
761 }
762 }
763
764 if (hdrlen != sizeof(*tr))
765 skb_pull(skb, sizeof(*tr) - hdrlen);
766}
767
768static void
769mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
770{
771 struct ieee80211_hdr *wh;
772 int hdrlen;
773 int reqd_hdrlen;
774 struct mwl8k_dma_data *tr;
775
776 /*
777 * Add a firmware DMA header; the firmware requires that we
778 * present a 2-byte payload length followed by a 4-address
779 * header (without QoS field), followed (optionally) by any
780 * WEP/ExtIV header (but only filled in for CCMP).
781 */
782 wh = (struct ieee80211_hdr *)skb->data;
783
784 hdrlen = ieee80211_hdrlen(wh->frame_control);
785 reqd_hdrlen = sizeof(*tr);
786
787 if (hdrlen != reqd_hdrlen)
788 skb_push(skb, reqd_hdrlen - hdrlen);
789
790 if (ieee80211_is_data_qos(wh->frame_control))
791 hdrlen -= IEEE80211_QOS_CTL_LEN;
792
793 tr = (struct mwl8k_dma_data *)skb->data;
794 if (wh != &tr->wh)
795 memmove(&tr->wh, wh, hdrlen);
796 if (hdrlen != sizeof(tr->wh))
797 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
798
799 /*
800 * Firmware length is the length of the fully formed "802.11
801 * payload". That is, everything except for the 802.11 header.
802 * This includes all crypto material including the MIC.
803 */
804 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
805}
806
807static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb)
808{
809 struct ieee80211_hdr *wh;
810 struct ieee80211_tx_info *tx_info;
811 struct ieee80211_key_conf *key_conf;
812 int data_pad;
813
814 wh = (struct ieee80211_hdr *)skb->data;
815
816 tx_info = IEEE80211_SKB_CB(skb);
817
818 key_conf = NULL;
819 if (ieee80211_is_data(wh->frame_control))
820 key_conf = tx_info->control.hw_key;
821
822 /*
823 * Make sure the packet header is in the DMA header format (4-address
824 * without QoS), the necessary crypto padding between the header and the
825 * payload has already been provided by mac80211, but it doesn't add tail
826 * padding when HW crypto is enabled.
827 *
828 * We have the following trailer padding requirements:
829 * - WEP: 4 trailer bytes (ICV)
830 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
831 * - CCMP: 8 trailer bytes (MIC)
832 */
833 data_pad = 0;
834 if (key_conf != NULL) {
835 switch (key_conf->cipher) {
836 case WLAN_CIPHER_SUITE_WEP40:
837 case WLAN_CIPHER_SUITE_WEP104:
838 data_pad = 4;
839 break;
840 case WLAN_CIPHER_SUITE_TKIP:
841 data_pad = 12;
842 break;
843 case WLAN_CIPHER_SUITE_CCMP:
844 data_pad = 8;
845 break;
846 }
847 }
848 mwl8k_add_dma_header(skb, data_pad);
849}
850
851/*
852 * Packet reception for 88w8366 AP firmware.
853 */
854struct mwl8k_rxd_8366_ap {
855 __le16 pkt_len;
856 __u8 sq2;
857 __u8 rate;
858 __le32 pkt_phys_addr;
859 __le32 next_rxd_phys_addr;
860 __le16 qos_control;
861 __le16 htsig2;
862 __le32 hw_rssi_info;
863 __le32 hw_noise_floor_info;
864 __u8 noise_floor;
865 __u8 pad0[3];
866 __u8 rssi;
867 __u8 rx_status;
868 __u8 channel;
869 __u8 rx_ctrl;
870} __packed;
871
872#define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
873#define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
874#define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
875
876#define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
877
878/* 8366 AP rx_status bits */
879#define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
880#define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
881#define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
882#define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
883#define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
884
885static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
886{
887 struct mwl8k_rxd_8366_ap *rxd = _rxd;
888
889 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
890 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
891}
892
893static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
894{
895 struct mwl8k_rxd_8366_ap *rxd = _rxd;
896
897 rxd->pkt_len = cpu_to_le16(len);
898 rxd->pkt_phys_addr = cpu_to_le32(addr);
899 wmb();
900 rxd->rx_ctrl = 0;
901}
902
903static int
904mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
905 __le16 *qos, s8 *noise)
906{
907 struct mwl8k_rxd_8366_ap *rxd = _rxd;
908
909 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
910 return -1;
911 rmb();
912
913 memset(status, 0, sizeof(*status));
914
915 status->signal = -rxd->rssi;
916 *noise = -rxd->noise_floor;
917
918 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
919 status->flag |= RX_FLAG_HT;
920 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
921 status->flag |= RX_FLAG_40MHZ;
922 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
923 } else {
924 int i;
925
926 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
927 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
928 status->rate_idx = i;
929 break;
930 }
931 }
932 }
933
934 if (rxd->channel > 14) {
935 status->band = IEEE80211_BAND_5GHZ;
936 if (!(status->flag & RX_FLAG_HT))
937 status->rate_idx -= 5;
938 } else {
939 status->band = IEEE80211_BAND_2GHZ;
940 }
941 status->freq = ieee80211_channel_to_frequency(rxd->channel,
942 status->band);
943
944 *qos = rxd->qos_control;
945
946 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
947 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
948 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
949 status->flag |= RX_FLAG_MMIC_ERROR;
950
951 return le16_to_cpu(rxd->pkt_len);
952}
953
954static struct rxd_ops rxd_8366_ap_ops = {
955 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
956 .rxd_init = mwl8k_rxd_8366_ap_init,
957 .rxd_refill = mwl8k_rxd_8366_ap_refill,
958 .rxd_process = mwl8k_rxd_8366_ap_process,
959};
960
961/*
962 * Packet reception for STA firmware.
963 */
964struct mwl8k_rxd_sta {
965 __le16 pkt_len;
966 __u8 link_quality;
967 __u8 noise_level;
968 __le32 pkt_phys_addr;
969 __le32 next_rxd_phys_addr;
970 __le16 qos_control;
971 __le16 rate_info;
972 __le32 pad0[4];
973 __u8 rssi;
974 __u8 channel;
975 __le16 pad1;
976 __u8 rx_ctrl;
977 __u8 rx_status;
978 __u8 pad2[2];
979} __packed;
980
981#define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
982#define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
983#define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
984#define MWL8K_STA_RATE_INFO_40MHZ 0x0004
985#define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
986#define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
987
988#define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
989#define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
990/* ICV=0 or MIC=1 */
991#define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
992/* Key is uploaded only in failure case */
993#define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
994
995static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
996{
997 struct mwl8k_rxd_sta *rxd = _rxd;
998
999 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1000 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1001}
1002
1003static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1004{
1005 struct mwl8k_rxd_sta *rxd = _rxd;
1006
1007 rxd->pkt_len = cpu_to_le16(len);
1008 rxd->pkt_phys_addr = cpu_to_le32(addr);
1009 wmb();
1010 rxd->rx_ctrl = 0;
1011}
1012
1013static int
1014mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1015 __le16 *qos, s8 *noise)
1016{
1017 struct mwl8k_rxd_sta *rxd = _rxd;
1018 u16 rate_info;
1019
1020 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1021 return -1;
1022 rmb();
1023
1024 rate_info = le16_to_cpu(rxd->rate_info);
1025
1026 memset(status, 0, sizeof(*status));
1027
1028 status->signal = -rxd->rssi;
1029 *noise = -rxd->noise_level;
1030 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1031 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1032
1033 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1034 status->flag |= RX_FLAG_SHORTPRE;
1035 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1036 status->flag |= RX_FLAG_40MHZ;
1037 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1038 status->flag |= RX_FLAG_SHORT_GI;
1039 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1040 status->flag |= RX_FLAG_HT;
1041
1042 if (rxd->channel > 14) {
1043 status->band = IEEE80211_BAND_5GHZ;
1044 if (!(status->flag & RX_FLAG_HT))
1045 status->rate_idx -= 5;
1046 } else {
1047 status->band = IEEE80211_BAND_2GHZ;
1048 }
1049 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1050 status->band);
1051
1052 *qos = rxd->qos_control;
1053 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1054 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1055 status->flag |= RX_FLAG_MMIC_ERROR;
1056
1057 return le16_to_cpu(rxd->pkt_len);
1058}
1059
1060static struct rxd_ops rxd_sta_ops = {
1061 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1062 .rxd_init = mwl8k_rxd_sta_init,
1063 .rxd_refill = mwl8k_rxd_sta_refill,
1064 .rxd_process = mwl8k_rxd_sta_process,
1065};
1066
1067
1068#define MWL8K_RX_DESCS 256
1069#define MWL8K_RX_MAXSZ 3800
1070
1071static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1072{
1073 struct mwl8k_priv *priv = hw->priv;
1074 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1075 int size;
1076 int i;
1077
1078 rxq->rxd_count = 0;
1079 rxq->head = 0;
1080 rxq->tail = 0;
1081
1082 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1083
1084 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1085 if (rxq->rxd == NULL) {
1086 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1087 return -ENOMEM;
1088 }
1089 memset(rxq->rxd, 0, size);
1090
1091 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1092 if (rxq->buf == NULL) {
1093 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1094 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1095 return -ENOMEM;
1096 }
1097
1098 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1099 int desc_size;
1100 void *rxd;
1101 int nexti;
1102 dma_addr_t next_dma_addr;
1103
1104 desc_size = priv->rxd_ops->rxd_size;
1105 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1106
1107 nexti = i + 1;
1108 if (nexti == MWL8K_RX_DESCS)
1109 nexti = 0;
1110 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1111
1112 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1113 }
1114
1115 return 0;
1116}
1117
1118static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1119{
1120 struct mwl8k_priv *priv = hw->priv;
1121 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1122 int refilled;
1123
1124 refilled = 0;
1125 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1126 struct sk_buff *skb;
1127 dma_addr_t addr;
1128 int rx;
1129 void *rxd;
1130
1131 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1132 if (skb == NULL)
1133 break;
1134
1135 addr = pci_map_single(priv->pdev, skb->data,
1136 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1137
1138 rxq->rxd_count++;
1139 rx = rxq->tail++;
1140 if (rxq->tail == MWL8K_RX_DESCS)
1141 rxq->tail = 0;
1142 rxq->buf[rx].skb = skb;
1143 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1144
1145 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1146 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1147
1148 refilled++;
1149 }
1150
1151 return refilled;
1152}
1153
1154/* Must be called only when the card's reception is completely halted */
1155static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1156{
1157 struct mwl8k_priv *priv = hw->priv;
1158 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1159 int i;
1160
1161 if (rxq->rxd == NULL)
1162 return;
1163
1164 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1165 if (rxq->buf[i].skb != NULL) {
1166 pci_unmap_single(priv->pdev,
1167 dma_unmap_addr(&rxq->buf[i], dma),
1168 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1169 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1170
1171 kfree_skb(rxq->buf[i].skb);
1172 rxq->buf[i].skb = NULL;
1173 }
1174 }
1175
1176 kfree(rxq->buf);
1177 rxq->buf = NULL;
1178
1179 pci_free_consistent(priv->pdev,
1180 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1181 rxq->rxd, rxq->rxd_dma);
1182 rxq->rxd = NULL;
1183}
1184
1185
1186/*
1187 * Scan a list of BSSIDs to process for finalize join.
1188 * Allows for extension to process multiple BSSIDs.
1189 */
1190static inline int
1191mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1192{
1193 return priv->capture_beacon &&
1194 ieee80211_is_beacon(wh->frame_control) &&
1195 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1196}
1197
1198static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1199 struct sk_buff *skb)
1200{
1201 struct mwl8k_priv *priv = hw->priv;
1202
1203 priv->capture_beacon = false;
1204 memset(priv->capture_bssid, 0, ETH_ALEN);
1205
1206 /*
1207 * Use GFP_ATOMIC as rxq_process is called from
1208 * the primary interrupt handler, memory allocation call
1209 * must not sleep.
1210 */
1211 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1212 if (priv->beacon_skb != NULL)
1213 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1214}
1215
1216static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1217 u8 *bssid)
1218{
1219 struct mwl8k_vif *mwl8k_vif;
1220
1221 list_for_each_entry(mwl8k_vif,
1222 vif_list, list) {
1223 if (memcmp(bssid, mwl8k_vif->bssid,
1224 ETH_ALEN) == 0)
1225 return mwl8k_vif;
1226 }
1227
1228 return NULL;
1229}
1230
1231static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1232{
1233 struct mwl8k_priv *priv = hw->priv;
1234 struct mwl8k_vif *mwl8k_vif = NULL;
1235 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1236 int processed;
1237
1238 processed = 0;
1239 while (rxq->rxd_count && limit--) {
1240 struct sk_buff *skb;
1241 void *rxd;
1242 int pkt_len;
1243 struct ieee80211_rx_status status;
1244 struct ieee80211_hdr *wh;
1245 __le16 qos;
1246
1247 skb = rxq->buf[rxq->head].skb;
1248 if (skb == NULL)
1249 break;
1250
1251 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1252
1253 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1254 &priv->noise);
1255 if (pkt_len < 0)
1256 break;
1257
1258 rxq->buf[rxq->head].skb = NULL;
1259
1260 pci_unmap_single(priv->pdev,
1261 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1262 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1263 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1264
1265 rxq->head++;
1266 if (rxq->head == MWL8K_RX_DESCS)
1267 rxq->head = 0;
1268
1269 rxq->rxd_count--;
1270
1271 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1272
1273 /*
1274 * Check for a pending join operation. Save a
1275 * copy of the beacon and schedule a tasklet to
1276 * send a FINALIZE_JOIN command to the firmware.
1277 */
1278 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1279 mwl8k_save_beacon(hw, skb);
1280
1281 if (ieee80211_has_protected(wh->frame_control)) {
1282
1283 /* Check if hw crypto has been enabled for
1284 * this bss. If yes, set the status flags
1285 * accordingly
1286 */
1287 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1288 wh->addr1);
1289
1290 if (mwl8k_vif != NULL &&
1291 mwl8k_vif->is_hw_crypto_enabled == true) {
1292 /*
1293 * When MMIC ERROR is encountered
1294 * by the firmware, payload is
1295 * dropped and only 32 bytes of
1296 * mwl8k Firmware header is sent
1297 * to the host.
1298 *
1299 * We need to add four bytes of
1300 * key information. In it
1301 * MAC80211 expects keyidx set to
1302 * 0 for triggering Counter
1303 * Measure of MMIC failure.
1304 */
1305 if (status.flag & RX_FLAG_MMIC_ERROR) {
1306 struct mwl8k_dma_data *tr;
1307 tr = (struct mwl8k_dma_data *)skb->data;
1308 memset((void *)&(tr->data), 0, 4);
1309 pkt_len += 4;
1310 }
1311
1312 if (!ieee80211_is_auth(wh->frame_control))
1313 status.flag |= RX_FLAG_IV_STRIPPED |
1314 RX_FLAG_DECRYPTED |
1315 RX_FLAG_MMIC_STRIPPED;
1316 }
1317 }
1318
1319 skb_put(skb, pkt_len);
1320 mwl8k_remove_dma_header(skb, qos);
1321 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1322 ieee80211_rx_irqsafe(hw, skb);
1323
1324 processed++;
1325 }
1326
1327 return processed;
1328}
1329
1330
1331/*
1332 * Packet transmission.
1333 */
1334
1335#define MWL8K_TXD_STATUS_OK 0x00000001
1336#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1337#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1338#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1339#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1340
1341#define MWL8K_QOS_QLEN_UNSPEC 0xff00
1342#define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1343#define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1344#define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1345#define MWL8K_QOS_EOSP 0x0010
1346
1347struct mwl8k_tx_desc {
1348 __le32 status;
1349 __u8 data_rate;
1350 __u8 tx_priority;
1351 __le16 qos_control;
1352 __le32 pkt_phys_addr;
1353 __le16 pkt_len;
1354 __u8 dest_MAC_addr[ETH_ALEN];
1355 __le32 next_txd_phys_addr;
1356 __le32 timestamp;
1357 __le16 rate_info;
1358 __u8 peer_id;
1359 __u8 tx_frag_cnt;
1360} __packed;
1361
1362#define MWL8K_TX_DESCS 128
1363
1364static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1365{
1366 struct mwl8k_priv *priv = hw->priv;
1367 struct mwl8k_tx_queue *txq = priv->txq + index;
1368 int size;
1369 int i;
1370
1371 txq->len = 0;
1372 txq->head = 0;
1373 txq->tail = 0;
1374
1375 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1376
1377 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1378 if (txq->txd == NULL) {
1379 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1380 return -ENOMEM;
1381 }
1382 memset(txq->txd, 0, size);
1383
1384 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1385 if (txq->skb == NULL) {
1386 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1387 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1388 return -ENOMEM;
1389 }
1390
1391 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1392 struct mwl8k_tx_desc *tx_desc;
1393 int nexti;
1394
1395 tx_desc = txq->txd + i;
1396 nexti = (i + 1) % MWL8K_TX_DESCS;
1397
1398 tx_desc->status = 0;
1399 tx_desc->next_txd_phys_addr =
1400 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1401 }
1402
1403 return 0;
1404}
1405
1406static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1407{
1408 iowrite32(MWL8K_H2A_INT_PPA_READY,
1409 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1410 iowrite32(MWL8K_H2A_INT_DUMMY,
1411 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1412 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1413}
1414
1415static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1416{
1417 struct mwl8k_priv *priv = hw->priv;
1418 int i;
1419
1420 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1421 struct mwl8k_tx_queue *txq = priv->txq + i;
1422 int fw_owned = 0;
1423 int drv_owned = 0;
1424 int unused = 0;
1425 int desc;
1426
1427 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1428 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1429 u32 status;
1430
1431 status = le32_to_cpu(tx_desc->status);
1432 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1433 fw_owned++;
1434 else
1435 drv_owned++;
1436
1437 if (tx_desc->pkt_len == 0)
1438 unused++;
1439 }
1440
1441 wiphy_err(hw->wiphy,
1442 "txq[%d] len=%d head=%d tail=%d "
1443 "fw_owned=%d drv_owned=%d unused=%d\n",
1444 i,
1445 txq->len, txq->head, txq->tail,
1446 fw_owned, drv_owned, unused);
1447 }
1448}
1449
1450/*
1451 * Must be called with priv->fw_mutex held and tx queues stopped.
1452 */
1453#define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1454
1455static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1456{
1457 struct mwl8k_priv *priv = hw->priv;
1458 DECLARE_COMPLETION_ONSTACK(tx_wait);
1459 int retry;
1460 int rc;
1461
1462 might_sleep();
1463
1464 /*
1465 * The TX queues are stopped at this point, so this test
1466 * doesn't need to take ->tx_lock.
1467 */
1468 if (!priv->pending_tx_pkts)
1469 return 0;
1470
1471 retry = 0;
1472 rc = 0;
1473
1474 spin_lock_bh(&priv->tx_lock);
1475 priv->tx_wait = &tx_wait;
1476 while (!rc) {
1477 int oldcount;
1478 unsigned long timeout;
1479
1480 oldcount = priv->pending_tx_pkts;
1481
1482 spin_unlock_bh(&priv->tx_lock);
1483 timeout = wait_for_completion_timeout(&tx_wait,
1484 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1485 spin_lock_bh(&priv->tx_lock);
1486
1487 if (timeout) {
1488 WARN_ON(priv->pending_tx_pkts);
1489 if (retry) {
1490 wiphy_notice(hw->wiphy, "tx rings drained\n");
1491 }
1492 break;
1493 }
1494
1495 if (priv->pending_tx_pkts < oldcount) {
1496 wiphy_notice(hw->wiphy,
1497 "waiting for tx rings to drain (%d -> %d pkts)\n",
1498 oldcount, priv->pending_tx_pkts);
1499 retry = 1;
1500 continue;
1501 }
1502
1503 priv->tx_wait = NULL;
1504
1505 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1506 MWL8K_TX_WAIT_TIMEOUT_MS);
1507 mwl8k_dump_tx_rings(hw);
1508
1509 rc = -ETIMEDOUT;
1510 }
1511 spin_unlock_bh(&priv->tx_lock);
1512
1513 return rc;
1514}
1515
1516#define MWL8K_TXD_SUCCESS(status) \
1517 ((status) & (MWL8K_TXD_STATUS_OK | \
1518 MWL8K_TXD_STATUS_OK_RETRY | \
1519 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1520
1521/* The firmware will fill in the rate information
1522 * for each packet that gets queued in the hardware
1523 * in this structure
1524 */
1525
1526struct rateinfo {
1527 __le16 format:1;
1528 __le16 short_gi:1;
1529 __le16 band_width:1;
1530 __le16 rate_id_mcs:6;
1531 __le16 adv_coding:2;
1532 __le16 antenna:2;
1533 __le16 act_sub_chan:2;
1534 __le16 preamble_type:1;
1535 __le16 power_id:4;
1536 __le16 antenna2:1;
1537 __le16 reserved:1;
1538 __le16 tx_bf_frame:1;
1539 __le16 green_field:1;
1540} __packed;
1541
1542static int
1543mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1544{
1545 struct mwl8k_priv *priv = hw->priv;
1546 struct mwl8k_tx_queue *txq = priv->txq + index;
1547 int processed;
1548
1549 processed = 0;
1550 while (txq->len > 0 && limit--) {
1551 int tx;
1552 struct mwl8k_tx_desc *tx_desc;
1553 unsigned long addr;
1554 int size;
1555 struct sk_buff *skb;
1556 struct ieee80211_tx_info *info;
1557 u32 status;
1558 struct ieee80211_sta *sta;
1559 struct mwl8k_sta *sta_info = NULL;
1560 u16 rate_info;
1561 struct rateinfo *rate;
1562 struct ieee80211_hdr *wh;
1563
1564 tx = txq->head;
1565 tx_desc = txq->txd + tx;
1566
1567 status = le32_to_cpu(tx_desc->status);
1568
1569 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1570 if (!force)
1571 break;
1572 tx_desc->status &=
1573 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1574 }
1575
1576 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1577 BUG_ON(txq->len == 0);
1578 txq->len--;
1579 priv->pending_tx_pkts--;
1580
1581 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1582 size = le16_to_cpu(tx_desc->pkt_len);
1583 skb = txq->skb[tx];
1584 txq->skb[tx] = NULL;
1585
1586 BUG_ON(skb == NULL);
1587 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1588
1589 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1590
1591 wh = (struct ieee80211_hdr *) skb->data;
1592
1593 /* Mark descriptor as unused */
1594 tx_desc->pkt_phys_addr = 0;
1595 tx_desc->pkt_len = 0;
1596
1597 info = IEEE80211_SKB_CB(skb);
1598 if (ieee80211_is_data(wh->frame_control)) {
1599 sta = info->control.sta;
1600 if (sta) {
1601 sta_info = MWL8K_STA(sta);
1602 BUG_ON(sta_info == NULL);
1603 rate_info = le16_to_cpu(tx_desc->rate_info);
1604 rate = (struct rateinfo *)&rate_info;
1605 /* If rate is < 6.5 Mpbs for an ht station
1606 * do not form an ampdu. If the station is a
1607 * legacy station (format = 0), do not form an
1608 * ampdu
1609 */
1610 if (rate->rate_id_mcs < 1 ||
1611 rate->format == 0) {
1612 sta_info->is_ampdu_allowed = false;
1613 } else {
1614 sta_info->is_ampdu_allowed = true;
1615 }
1616 }
1617 }
1618
1619 ieee80211_tx_info_clear_status(info);
1620
1621 /* Rate control is happening in the firmware.
1622 * Ensure no tx rate is being reported.
1623 */
1624 info->status.rates[0].idx = -1;
1625 info->status.rates[0].count = 1;
1626
1627 if (MWL8K_TXD_SUCCESS(status))
1628 info->flags |= IEEE80211_TX_STAT_ACK;
1629
1630 ieee80211_tx_status_irqsafe(hw, skb);
1631
1632 processed++;
1633 }
1634
1635 if (index < MWL8K_TX_WMM_QUEUES && processed && priv->radio_on &&
1636 !mutex_is_locked(&priv->fw_mutex))
1637 ieee80211_wake_queue(hw, index);
1638
1639 return processed;
1640}
1641
1642/* must be called only when the card's transmit is completely halted */
1643static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1644{
1645 struct mwl8k_priv *priv = hw->priv;
1646 struct mwl8k_tx_queue *txq = priv->txq + index;
1647
1648 if (txq->txd == NULL)
1649 return;
1650
1651 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1652
1653 kfree(txq->skb);
1654 txq->skb = NULL;
1655
1656 pci_free_consistent(priv->pdev,
1657 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1658 txq->txd, txq->txd_dma);
1659 txq->txd = NULL;
1660}
1661
1662/* caller must hold priv->stream_lock when calling the stream functions */
1663struct mwl8k_ampdu_stream *
1664mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1665{
1666 struct mwl8k_ampdu_stream *stream;
1667 struct mwl8k_priv *priv = hw->priv;
1668 int i;
1669
1670 for (i = 0; i < priv->num_ampdu_queues; i++) {
1671 stream = &priv->ampdu[i];
1672 if (stream->state == AMPDU_NO_STREAM) {
1673 stream->sta = sta;
1674 stream->state = AMPDU_STREAM_NEW;
1675 stream->tid = tid;
1676 stream->idx = i;
1677 stream->txq_idx = MWL8K_TX_WMM_QUEUES + i;
1678 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1679 sta->addr, tid);
1680 return stream;
1681 }
1682 }
1683 return NULL;
1684}
1685
1686static int
1687mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1688{
1689 int ret;
1690
1691 /* if the stream has already been started, don't start it again */
1692 if (stream->state != AMPDU_STREAM_NEW)
1693 return 0;
1694 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1695 if (ret)
1696 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1697 "%d\n", stream->sta->addr, stream->tid, ret);
1698 else
1699 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1700 stream->sta->addr, stream->tid);
1701 return ret;
1702}
1703
1704static void
1705mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1706{
1707 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1708 stream->tid);
1709 memset(stream, 0, sizeof(*stream));
1710}
1711
1712static struct mwl8k_ampdu_stream *
1713mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1714{
1715 struct mwl8k_priv *priv = hw->priv;
1716 int i;
1717
1718 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1719 struct mwl8k_ampdu_stream *stream;
1720 stream = &priv->ampdu[i];
1721 if (stream->state == AMPDU_NO_STREAM)
1722 continue;
1723 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1724 stream->tid == tid)
1725 return stream;
1726 }
1727 return NULL;
1728}
1729
1730static void
1731mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1732{
1733 struct mwl8k_priv *priv = hw->priv;
1734 struct ieee80211_tx_info *tx_info;
1735 struct mwl8k_vif *mwl8k_vif;
1736 struct ieee80211_sta *sta;
1737 struct ieee80211_hdr *wh;
1738 struct mwl8k_tx_queue *txq;
1739 struct mwl8k_tx_desc *tx;
1740 dma_addr_t dma;
1741 u32 txstatus;
1742 u8 txdatarate;
1743 u16 qos;
1744 int txpriority;
1745 u8 tid = 0;
1746 struct mwl8k_ampdu_stream *stream = NULL;
1747 bool start_ba_session = false;
1748
1749 wh = (struct ieee80211_hdr *)skb->data;
1750 if (ieee80211_is_data_qos(wh->frame_control))
1751 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1752 else
1753 qos = 0;
1754
1755 if (priv->ap_fw)
1756 mwl8k_encapsulate_tx_frame(skb);
1757 else
1758 mwl8k_add_dma_header(skb, 0);
1759
1760 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1761
1762 tx_info = IEEE80211_SKB_CB(skb);
1763 sta = tx_info->control.sta;
1764 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1765
1766 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1767 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1768 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1769 mwl8k_vif->seqno += 0x10;
1770 }
1771
1772 /* Setup firmware control bit fields for each frame type. */
1773 txstatus = 0;
1774 txdatarate = 0;
1775 if (ieee80211_is_mgmt(wh->frame_control) ||
1776 ieee80211_is_ctl(wh->frame_control)) {
1777 txdatarate = 0;
1778 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1779 } else if (ieee80211_is_data(wh->frame_control)) {
1780 txdatarate = 1;
1781 if (is_multicast_ether_addr(wh->addr1))
1782 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1783
1784 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1785 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1786 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1787 else
1788 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1789 }
1790
1791 txpriority = index;
1792
1793 if (ieee80211_is_data_qos(wh->frame_control) &&
1794 skb->protocol != cpu_to_be16(ETH_P_PAE) &&
1795 sta->ht_cap.ht_supported && priv->ap_fw) {
1796 tid = qos & 0xf;
1797 spin_lock(&priv->stream_lock);
1798 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1799 if (stream != NULL) {
1800 if (stream->state == AMPDU_STREAM_ACTIVE) {
1801 txpriority = stream->txq_idx;
1802 index = stream->txq_idx;
1803 } else if (stream->state == AMPDU_STREAM_NEW) {
1804 /* We get here if the driver sends us packets
1805 * after we've initiated a stream, but before
1806 * our ampdu_action routine has been called
1807 * with IEEE80211_AMPDU_TX_START to get the SSN
1808 * for the ADDBA request. So this packet can
1809 * go out with no risk of sequence number
1810 * mismatch. No special handling is required.
1811 */
1812 } else {
1813 /* Drop packets that would go out after the
1814 * ADDBA request was sent but before the ADDBA
1815 * response is received. If we don't do this,
1816 * the recipient would probably receive it
1817 * after the ADDBA request with SSN 0. This
1818 * will cause the recipient's BA receive window
1819 * to shift, which would cause the subsequent
1820 * packets in the BA stream to be discarded.
1821 * mac80211 queues our packets for us in this
1822 * case, so this is really just a safety check.
1823 */
1824 wiphy_warn(hw->wiphy,
1825 "Cannot send packet while ADDBA "
1826 "dialog is underway.\n");
1827 spin_unlock(&priv->stream_lock);
1828 dev_kfree_skb(skb);
1829 return;
1830 }
1831 } else {
1832 /* Defer calling mwl8k_start_stream so that the current
1833 * skb can go out before the ADDBA request. This
1834 * prevents sequence number mismatch at the recepient
1835 * as described above.
1836 */
1837 if (MWL8K_STA(sta)->is_ampdu_allowed) {
1838 stream = mwl8k_add_stream(hw, sta, tid);
1839 if (stream != NULL)
1840 start_ba_session = true;
1841 }
1842 }
1843 spin_unlock(&priv->stream_lock);
1844 }
1845
1846 dma = pci_map_single(priv->pdev, skb->data,
1847 skb->len, PCI_DMA_TODEVICE);
1848
1849 if (pci_dma_mapping_error(priv->pdev, dma)) {
1850 wiphy_debug(hw->wiphy,
1851 "failed to dma map skb, dropping TX frame.\n");
1852 if (start_ba_session) {
1853 spin_lock(&priv->stream_lock);
1854 mwl8k_remove_stream(hw, stream);
1855 spin_unlock(&priv->stream_lock);
1856 }
1857 dev_kfree_skb(skb);
1858 return;
1859 }
1860
1861 spin_lock_bh(&priv->tx_lock);
1862
1863 txq = priv->txq + index;
1864
1865 if (index >= MWL8K_TX_WMM_QUEUES && txq->len >= MWL8K_TX_DESCS) {
1866 /* This is the case in which the tx packet is destined for an
1867 * AMPDU queue and that AMPDU queue is full. Because we don't
1868 * start and stop the AMPDU queues, we must drop these packets.
1869 */
1870 dev_kfree_skb(skb);
1871 spin_unlock_bh(&priv->tx_lock);
1872 return;
1873 }
1874
1875 BUG_ON(txq->skb[txq->tail] != NULL);
1876 txq->skb[txq->tail] = skb;
1877
1878 tx = txq->txd + txq->tail;
1879 tx->data_rate = txdatarate;
1880 tx->tx_priority = txpriority;
1881 tx->qos_control = cpu_to_le16(qos);
1882 tx->pkt_phys_addr = cpu_to_le32(dma);
1883 tx->pkt_len = cpu_to_le16(skb->len);
1884 tx->rate_info = 0;
1885 if (!priv->ap_fw && tx_info->control.sta != NULL)
1886 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1887 else
1888 tx->peer_id = 0;
1889 wmb();
1890 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1891
1892 txq->len++;
1893 priv->pending_tx_pkts++;
1894
1895 txq->tail++;
1896 if (txq->tail == MWL8K_TX_DESCS)
1897 txq->tail = 0;
1898
1899 if (txq->head == txq->tail && index < MWL8K_TX_WMM_QUEUES)
1900 ieee80211_stop_queue(hw, index);
1901
1902 mwl8k_tx_start(priv);
1903
1904 spin_unlock_bh(&priv->tx_lock);
1905
1906 /* Initiate the ampdu session here */
1907 if (start_ba_session) {
1908 spin_lock(&priv->stream_lock);
1909 if (mwl8k_start_stream(hw, stream))
1910 mwl8k_remove_stream(hw, stream);
1911 spin_unlock(&priv->stream_lock);
1912 }
1913}
1914
1915
1916/*
1917 * Firmware access.
1918 *
1919 * We have the following requirements for issuing firmware commands:
1920 * - Some commands require that the packet transmit path is idle when
1921 * the command is issued. (For simplicity, we'll just quiesce the
1922 * transmit path for every command.)
1923 * - There are certain sequences of commands that need to be issued to
1924 * the hardware sequentially, with no other intervening commands.
1925 *
1926 * This leads to an implementation of a "firmware lock" as a mutex that
1927 * can be taken recursively, and which is taken by both the low-level
1928 * command submission function (mwl8k_post_cmd) as well as any users of
1929 * that function that require issuing of an atomic sequence of commands,
1930 * and quiesces the transmit path whenever it's taken.
1931 */
1932static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1933{
1934 struct mwl8k_priv *priv = hw->priv;
1935
1936 if (priv->fw_mutex_owner != current) {
1937 int rc;
1938
1939 mutex_lock(&priv->fw_mutex);
1940 ieee80211_stop_queues(hw);
1941
1942 rc = mwl8k_tx_wait_empty(hw);
1943 if (rc) {
1944 ieee80211_wake_queues(hw);
1945 mutex_unlock(&priv->fw_mutex);
1946
1947 return rc;
1948 }
1949
1950 priv->fw_mutex_owner = current;
1951 }
1952
1953 priv->fw_mutex_depth++;
1954
1955 return 0;
1956}
1957
1958static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1959{
1960 struct mwl8k_priv *priv = hw->priv;
1961
1962 if (!--priv->fw_mutex_depth) {
1963 ieee80211_wake_queues(hw);
1964 priv->fw_mutex_owner = NULL;
1965 mutex_unlock(&priv->fw_mutex);
1966 }
1967}
1968
1969
1970/*
1971 * Command processing.
1972 */
1973
1974/* Timeout firmware commands after 10s */
1975#define MWL8K_CMD_TIMEOUT_MS 10000
1976
1977static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1978{
1979 DECLARE_COMPLETION_ONSTACK(cmd_wait);
1980 struct mwl8k_priv *priv = hw->priv;
1981 void __iomem *regs = priv->regs;
1982 dma_addr_t dma_addr;
1983 unsigned int dma_size;
1984 int rc;
1985 unsigned long timeout = 0;
1986 u8 buf[32];
1987
1988 cmd->result = (__force __le16) 0xffff;
1989 dma_size = le16_to_cpu(cmd->length);
1990 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1991 PCI_DMA_BIDIRECTIONAL);
1992 if (pci_dma_mapping_error(priv->pdev, dma_addr))
1993 return -ENOMEM;
1994
1995 rc = mwl8k_fw_lock(hw);
1996 if (rc) {
1997 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1998 PCI_DMA_BIDIRECTIONAL);
1999 return rc;
2000 }
2001
2002 priv->hostcmd_wait = &cmd_wait;
2003 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2004 iowrite32(MWL8K_H2A_INT_DOORBELL,
2005 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2006 iowrite32(MWL8K_H2A_INT_DUMMY,
2007 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2008
2009 timeout = wait_for_completion_timeout(&cmd_wait,
2010 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2011
2012 priv->hostcmd_wait = NULL;
2013
2014 mwl8k_fw_unlock(hw);
2015
2016 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2017 PCI_DMA_BIDIRECTIONAL);
2018
2019 if (!timeout) {
2020 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2021 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2022 MWL8K_CMD_TIMEOUT_MS);
2023 rc = -ETIMEDOUT;
2024 } else {
2025 int ms;
2026
2027 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2028
2029 rc = cmd->result ? -EINVAL : 0;
2030 if (rc)
2031 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2032 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2033 le16_to_cpu(cmd->result));
2034 else if (ms > 2000)
2035 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2036 mwl8k_cmd_name(cmd->code,
2037 buf, sizeof(buf)),
2038 ms);
2039 }
2040
2041 return rc;
2042}
2043
2044static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2045 struct ieee80211_vif *vif,
2046 struct mwl8k_cmd_pkt *cmd)
2047{
2048 if (vif != NULL)
2049 cmd->macid = MWL8K_VIF(vif)->macid;
2050 return mwl8k_post_cmd(hw, cmd);
2051}
2052
2053/*
2054 * Setup code shared between STA and AP firmware images.
2055 */
2056static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2057{
2058 struct mwl8k_priv *priv = hw->priv;
2059
2060 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2061 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2062
2063 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2064 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2065
2066 priv->band_24.band = IEEE80211_BAND_2GHZ;
2067 priv->band_24.channels = priv->channels_24;
2068 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2069 priv->band_24.bitrates = priv->rates_24;
2070 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2071
2072 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2073}
2074
2075static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2076{
2077 struct mwl8k_priv *priv = hw->priv;
2078
2079 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2080 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2081
2082 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2083 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2084
2085 priv->band_50.band = IEEE80211_BAND_5GHZ;
2086 priv->band_50.channels = priv->channels_50;
2087 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2088 priv->band_50.bitrates = priv->rates_50;
2089 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2090
2091 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2092}
2093
2094/*
2095 * CMD_GET_HW_SPEC (STA version).
2096 */
2097struct mwl8k_cmd_get_hw_spec_sta {
2098 struct mwl8k_cmd_pkt header;
2099 __u8 hw_rev;
2100 __u8 host_interface;
2101 __le16 num_mcaddrs;
2102 __u8 perm_addr[ETH_ALEN];
2103 __le16 region_code;
2104 __le32 fw_rev;
2105 __le32 ps_cookie;
2106 __le32 caps;
2107 __u8 mcs_bitmap[16];
2108 __le32 rx_queue_ptr;
2109 __le32 num_tx_queues;
2110 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2111 __le32 caps2;
2112 __le32 num_tx_desc_per_queue;
2113 __le32 total_rxd;
2114} __packed;
2115
2116#define MWL8K_CAP_MAX_AMSDU 0x20000000
2117#define MWL8K_CAP_GREENFIELD 0x08000000
2118#define MWL8K_CAP_AMPDU 0x04000000
2119#define MWL8K_CAP_RX_STBC 0x01000000
2120#define MWL8K_CAP_TX_STBC 0x00800000
2121#define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2122#define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2123#define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2124#define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2125#define MWL8K_CAP_DELAY_BA 0x00003000
2126#define MWL8K_CAP_MIMO 0x00000200
2127#define MWL8K_CAP_40MHZ 0x00000100
2128#define MWL8K_CAP_BAND_MASK 0x00000007
2129#define MWL8K_CAP_5GHZ 0x00000004
2130#define MWL8K_CAP_2GHZ4 0x00000001
2131
2132static void
2133mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2134 struct ieee80211_supported_band *band, u32 cap)
2135{
2136 int rx_streams;
2137 int tx_streams;
2138
2139 band->ht_cap.ht_supported = 1;
2140
2141 if (cap & MWL8K_CAP_MAX_AMSDU)
2142 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2143 if (cap & MWL8K_CAP_GREENFIELD)
2144 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2145 if (cap & MWL8K_CAP_AMPDU) {
2146 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2147 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2148 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2149 }
2150 if (cap & MWL8K_CAP_RX_STBC)
2151 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2152 if (cap & MWL8K_CAP_TX_STBC)
2153 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2154 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2155 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2156 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2157 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2158 if (cap & MWL8K_CAP_DELAY_BA)
2159 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2160 if (cap & MWL8K_CAP_40MHZ)
2161 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2162
2163 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2164 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2165
2166 band->ht_cap.mcs.rx_mask[0] = 0xff;
2167 if (rx_streams >= 2)
2168 band->ht_cap.mcs.rx_mask[1] = 0xff;
2169 if (rx_streams >= 3)
2170 band->ht_cap.mcs.rx_mask[2] = 0xff;
2171 band->ht_cap.mcs.rx_mask[4] = 0x01;
2172 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2173
2174 if (rx_streams != tx_streams) {
2175 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2176 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2177 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2178 }
2179}
2180
2181static void
2182mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2183{
2184 struct mwl8k_priv *priv = hw->priv;
2185
2186 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2187 mwl8k_setup_2ghz_band(hw);
2188 if (caps & MWL8K_CAP_MIMO)
2189 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2190 }
2191
2192 if (caps & MWL8K_CAP_5GHZ) {
2193 mwl8k_setup_5ghz_band(hw);
2194 if (caps & MWL8K_CAP_MIMO)
2195 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2196 }
2197}
2198
2199static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2200{
2201 struct mwl8k_priv *priv = hw->priv;
2202 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2203 int rc;
2204 int i;
2205
2206 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2207 if (cmd == NULL)
2208 return -ENOMEM;
2209
2210 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2211 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2212
2213 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2214 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2215 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2216 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2217 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2218 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2219 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2220 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2221
2222 rc = mwl8k_post_cmd(hw, &cmd->header);
2223
2224 if (!rc) {
2225 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2226 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2227 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2228 priv->hw_rev = cmd->hw_rev;
2229 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2230 priv->ap_macids_supported = 0x00000000;
2231 priv->sta_macids_supported = 0x00000001;
2232 }
2233
2234 kfree(cmd);
2235 return rc;
2236}
2237
2238/*
2239 * CMD_GET_HW_SPEC (AP version).
2240 */
2241struct mwl8k_cmd_get_hw_spec_ap {
2242 struct mwl8k_cmd_pkt header;
2243 __u8 hw_rev;
2244 __u8 host_interface;
2245 __le16 num_wcb;
2246 __le16 num_mcaddrs;
2247 __u8 perm_addr[ETH_ALEN];
2248 __le16 region_code;
2249 __le16 num_antenna;
2250 __le32 fw_rev;
2251 __le32 wcbbase0;
2252 __le32 rxwrptr;
2253 __le32 rxrdptr;
2254 __le32 ps_cookie;
2255 __le32 wcbbase1;
2256 __le32 wcbbase2;
2257 __le32 wcbbase3;
2258 __le32 fw_api_version;
2259 __le32 caps;
2260 __le32 num_of_ampdu_queues;
2261 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2262} __packed;
2263
2264static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2265{
2266 struct mwl8k_priv *priv = hw->priv;
2267 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2268 int rc, i;
2269 u32 api_version;
2270
2271 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2272 if (cmd == NULL)
2273 return -ENOMEM;
2274
2275 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2276 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2277
2278 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2279 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2280
2281 rc = mwl8k_post_cmd(hw, &cmd->header);
2282
2283 if (!rc) {
2284 int off;
2285
2286 api_version = le32_to_cpu(cmd->fw_api_version);
2287 if (priv->device_info->fw_api_ap != api_version) {
2288 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2289 " Expected %d got %d.\n", MWL8K_NAME,
2290 priv->device_info->part_name,
2291 priv->device_info->fw_api_ap,
2292 api_version);
2293 rc = -EINVAL;
2294 goto done;
2295 }
2296 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2297 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2298 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2299 priv->hw_rev = cmd->hw_rev;
2300 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2301 priv->ap_macids_supported = 0x000000ff;
2302 priv->sta_macids_supported = 0x00000000;
2303 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2304 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2305 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2306 " but we only support %d.\n",
2307 priv->num_ampdu_queues,
2308 MWL8K_MAX_AMPDU_QUEUES);
2309 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2310 }
2311 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2312 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2313
2314 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2315 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2316
2317 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2318 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2319 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2320 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2321
2322 for (i = 0; i < priv->num_ampdu_queues; i++)
2323 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2324 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2325 }
2326
2327done:
2328 kfree(cmd);
2329 return rc;
2330}
2331
2332/*
2333 * CMD_SET_HW_SPEC.
2334 */
2335struct mwl8k_cmd_set_hw_spec {
2336 struct mwl8k_cmd_pkt header;
2337 __u8 hw_rev;
2338 __u8 host_interface;
2339 __le16 num_mcaddrs;
2340 __u8 perm_addr[ETH_ALEN];
2341 __le16 region_code;
2342 __le32 fw_rev;
2343 __le32 ps_cookie;
2344 __le32 caps;
2345 __le32 rx_queue_ptr;
2346 __le32 num_tx_queues;
2347 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2348 __le32 flags;
2349 __le32 num_tx_desc_per_queue;
2350 __le32 total_rxd;
2351} __packed;
2352
2353/* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2354 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2355 * the packets that are queued for more than 500ms, will be dropped in the
2356 * hardware. This helps minimizing the issues caused due to head-of-line
2357 * blocking where a slow client can hog the bandwidth and affect traffic to a
2358 * faster client.
2359 */
2360#define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2361#define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2362#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2363#define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2364
2365static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2366{
2367 struct mwl8k_priv *priv = hw->priv;
2368 struct mwl8k_cmd_set_hw_spec *cmd;
2369 int rc;
2370 int i;
2371
2372 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2373 if (cmd == NULL)
2374 return -ENOMEM;
2375
2376 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2377 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2378
2379 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2380 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2381 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2382
2383 /*
2384 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2385 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2386 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2387 * priority is interpreted the right way in firmware.
2388 */
2389 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2390 int j = mwl8k_tx_queues(priv) - 1 - i;
2391 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2392 }
2393
2394 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2395 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2396 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2397 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2398 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2399
2400 rc = mwl8k_post_cmd(hw, &cmd->header);
2401 kfree(cmd);
2402
2403 return rc;
2404}
2405
2406/*
2407 * CMD_MAC_MULTICAST_ADR.
2408 */
2409struct mwl8k_cmd_mac_multicast_adr {
2410 struct mwl8k_cmd_pkt header;
2411 __le16 action;
2412 __le16 numaddr;
2413 __u8 addr[0][ETH_ALEN];
2414};
2415
2416#define MWL8K_ENABLE_RX_DIRECTED 0x0001
2417#define MWL8K_ENABLE_RX_MULTICAST 0x0002
2418#define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2419#define MWL8K_ENABLE_RX_BROADCAST 0x0008
2420
2421static struct mwl8k_cmd_pkt *
2422__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2423 struct netdev_hw_addr_list *mc_list)
2424{
2425 struct mwl8k_priv *priv = hw->priv;
2426 struct mwl8k_cmd_mac_multicast_adr *cmd;
2427 int size;
2428 int mc_count = 0;
2429
2430 if (mc_list)
2431 mc_count = netdev_hw_addr_list_count(mc_list);
2432
2433 if (allmulti || mc_count > priv->num_mcaddrs) {
2434 allmulti = 1;
2435 mc_count = 0;
2436 }
2437
2438 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2439
2440 cmd = kzalloc(size, GFP_ATOMIC);
2441 if (cmd == NULL)
2442 return NULL;
2443
2444 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2445 cmd->header.length = cpu_to_le16(size);
2446 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2447 MWL8K_ENABLE_RX_BROADCAST);
2448
2449 if (allmulti) {
2450 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2451 } else if (mc_count) {
2452 struct netdev_hw_addr *ha;
2453 int i = 0;
2454
2455 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2456 cmd->numaddr = cpu_to_le16(mc_count);
2457 netdev_hw_addr_list_for_each(ha, mc_list) {
2458 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2459 }
2460 }
2461
2462 return &cmd->header;
2463}
2464
2465/*
2466 * CMD_GET_STAT.
2467 */
2468struct mwl8k_cmd_get_stat {
2469 struct mwl8k_cmd_pkt header;
2470 __le32 stats[64];
2471} __packed;
2472
2473#define MWL8K_STAT_ACK_FAILURE 9
2474#define MWL8K_STAT_RTS_FAILURE 12
2475#define MWL8K_STAT_FCS_ERROR 24
2476#define MWL8K_STAT_RTS_SUCCESS 11
2477
2478static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2479 struct ieee80211_low_level_stats *stats)
2480{
2481 struct mwl8k_cmd_get_stat *cmd;
2482 int rc;
2483
2484 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2485 if (cmd == NULL)
2486 return -ENOMEM;
2487
2488 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2489 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2490
2491 rc = mwl8k_post_cmd(hw, &cmd->header);
2492 if (!rc) {
2493 stats->dot11ACKFailureCount =
2494 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2495 stats->dot11RTSFailureCount =
2496 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2497 stats->dot11FCSErrorCount =
2498 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2499 stats->dot11RTSSuccessCount =
2500 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2501 }
2502 kfree(cmd);
2503
2504 return rc;
2505}
2506
2507/*
2508 * CMD_RADIO_CONTROL.
2509 */
2510struct mwl8k_cmd_radio_control {
2511 struct mwl8k_cmd_pkt header;
2512 __le16 action;
2513 __le16 control;
2514 __le16 radio_on;
2515} __packed;
2516
2517static int
2518mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2519{
2520 struct mwl8k_priv *priv = hw->priv;
2521 struct mwl8k_cmd_radio_control *cmd;
2522 int rc;
2523
2524 if (enable == priv->radio_on && !force)
2525 return 0;
2526
2527 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2528 if (cmd == NULL)
2529 return -ENOMEM;
2530
2531 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2532 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2533 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2534 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2535 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2536
2537 rc = mwl8k_post_cmd(hw, &cmd->header);
2538 kfree(cmd);
2539
2540 if (!rc)
2541 priv->radio_on = enable;
2542
2543 return rc;
2544}
2545
2546static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2547{
2548 return mwl8k_cmd_radio_control(hw, 0, 0);
2549}
2550
2551static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2552{
2553 return mwl8k_cmd_radio_control(hw, 1, 0);
2554}
2555
2556static int
2557mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2558{
2559 struct mwl8k_priv *priv = hw->priv;
2560
2561 priv->radio_short_preamble = short_preamble;
2562
2563 return mwl8k_cmd_radio_control(hw, 1, 1);
2564}
2565
2566/*
2567 * CMD_RF_TX_POWER.
2568 */
2569#define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2570
2571struct mwl8k_cmd_rf_tx_power {
2572 struct mwl8k_cmd_pkt header;
2573 __le16 action;
2574 __le16 support_level;
2575 __le16 current_level;
2576 __le16 reserved;
2577 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2578} __packed;
2579
2580static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2581{
2582 struct mwl8k_cmd_rf_tx_power *cmd;
2583 int rc;
2584
2585 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2586 if (cmd == NULL)
2587 return -ENOMEM;
2588
2589 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2590 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2591 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2592 cmd->support_level = cpu_to_le16(dBm);
2593
2594 rc = mwl8k_post_cmd(hw, &cmd->header);
2595 kfree(cmd);
2596
2597 return rc;
2598}
2599
2600/*
2601 * CMD_TX_POWER.
2602 */
2603#define MWL8K_TX_POWER_LEVEL_TOTAL 12
2604
2605struct mwl8k_cmd_tx_power {
2606 struct mwl8k_cmd_pkt header;
2607 __le16 action;
2608 __le16 band;
2609 __le16 channel;
2610 __le16 bw;
2611 __le16 sub_ch;
2612 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2613} __attribute__((packed));
2614
2615static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2616 struct ieee80211_conf *conf,
2617 unsigned short pwr)
2618{
2619 struct ieee80211_channel *channel = conf->channel;
2620 struct mwl8k_cmd_tx_power *cmd;
2621 int rc;
2622 int i;
2623
2624 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2625 if (cmd == NULL)
2626 return -ENOMEM;
2627
2628 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2629 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2630 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2631
2632 if (channel->band == IEEE80211_BAND_2GHZ)
2633 cmd->band = cpu_to_le16(0x1);
2634 else if (channel->band == IEEE80211_BAND_5GHZ)
2635 cmd->band = cpu_to_le16(0x4);
2636
2637 cmd->channel = channel->hw_value;
2638
2639 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2640 conf->channel_type == NL80211_CHAN_HT20) {
2641 cmd->bw = cpu_to_le16(0x2);
2642 } else {
2643 cmd->bw = cpu_to_le16(0x4);
2644 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2645 cmd->sub_ch = cpu_to_le16(0x3);
2646 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2647 cmd->sub_ch = cpu_to_le16(0x1);
2648 }
2649
2650 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2651 cmd->power_level_list[i] = cpu_to_le16(pwr);
2652
2653 rc = mwl8k_post_cmd(hw, &cmd->header);
2654 kfree(cmd);
2655
2656 return rc;
2657}
2658
2659/*
2660 * CMD_RF_ANTENNA.
2661 */
2662struct mwl8k_cmd_rf_antenna {
2663 struct mwl8k_cmd_pkt header;
2664 __le16 antenna;
2665 __le16 mode;
2666} __packed;
2667
2668#define MWL8K_RF_ANTENNA_RX 1
2669#define MWL8K_RF_ANTENNA_TX 2
2670
2671static int
2672mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2673{
2674 struct mwl8k_cmd_rf_antenna *cmd;
2675 int rc;
2676
2677 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2678 if (cmd == NULL)
2679 return -ENOMEM;
2680
2681 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2682 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2683 cmd->antenna = cpu_to_le16(antenna);
2684 cmd->mode = cpu_to_le16(mask);
2685
2686 rc = mwl8k_post_cmd(hw, &cmd->header);
2687 kfree(cmd);
2688
2689 return rc;
2690}
2691
2692/*
2693 * CMD_SET_BEACON.
2694 */
2695struct mwl8k_cmd_set_beacon {
2696 struct mwl8k_cmd_pkt header;
2697 __le16 beacon_len;
2698 __u8 beacon[0];
2699};
2700
2701static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2702 struct ieee80211_vif *vif, u8 *beacon, int len)
2703{
2704 struct mwl8k_cmd_set_beacon *cmd;
2705 int rc;
2706
2707 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2708 if (cmd == NULL)
2709 return -ENOMEM;
2710
2711 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2712 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2713 cmd->beacon_len = cpu_to_le16(len);
2714 memcpy(cmd->beacon, beacon, len);
2715
2716 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2717 kfree(cmd);
2718
2719 return rc;
2720}
2721
2722/*
2723 * CMD_SET_PRE_SCAN.
2724 */
2725struct mwl8k_cmd_set_pre_scan {
2726 struct mwl8k_cmd_pkt header;
2727} __packed;
2728
2729static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2730{
2731 struct mwl8k_cmd_set_pre_scan *cmd;
2732 int rc;
2733
2734 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2735 if (cmd == NULL)
2736 return -ENOMEM;
2737
2738 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2739 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2740
2741 rc = mwl8k_post_cmd(hw, &cmd->header);
2742 kfree(cmd);
2743
2744 return rc;
2745}
2746
2747/*
2748 * CMD_SET_POST_SCAN.
2749 */
2750struct mwl8k_cmd_set_post_scan {
2751 struct mwl8k_cmd_pkt header;
2752 __le32 isibss;
2753 __u8 bssid[ETH_ALEN];
2754} __packed;
2755
2756static int
2757mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2758{
2759 struct mwl8k_cmd_set_post_scan *cmd;
2760 int rc;
2761
2762 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2763 if (cmd == NULL)
2764 return -ENOMEM;
2765
2766 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2767 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2768 cmd->isibss = 0;
2769 memcpy(cmd->bssid, mac, ETH_ALEN);
2770
2771 rc = mwl8k_post_cmd(hw, &cmd->header);
2772 kfree(cmd);
2773
2774 return rc;
2775}
2776
2777/*
2778 * CMD_SET_RF_CHANNEL.
2779 */
2780struct mwl8k_cmd_set_rf_channel {
2781 struct mwl8k_cmd_pkt header;
2782 __le16 action;
2783 __u8 current_channel;
2784 __le32 channel_flags;
2785} __packed;
2786
2787static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2788 struct ieee80211_conf *conf)
2789{
2790 struct ieee80211_channel *channel = conf->channel;
2791 struct mwl8k_cmd_set_rf_channel *cmd;
2792 int rc;
2793
2794 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2795 if (cmd == NULL)
2796 return -ENOMEM;
2797
2798 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2799 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2800 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2801 cmd->current_channel = channel->hw_value;
2802
2803 if (channel->band == IEEE80211_BAND_2GHZ)
2804 cmd->channel_flags |= cpu_to_le32(0x00000001);
2805 else if (channel->band == IEEE80211_BAND_5GHZ)
2806 cmd->channel_flags |= cpu_to_le32(0x00000004);
2807
2808 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2809 conf->channel_type == NL80211_CHAN_HT20)
2810 cmd->channel_flags |= cpu_to_le32(0x00000080);
2811 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2812 cmd->channel_flags |= cpu_to_le32(0x000001900);
2813 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2814 cmd->channel_flags |= cpu_to_le32(0x000000900);
2815
2816 rc = mwl8k_post_cmd(hw, &cmd->header);
2817 kfree(cmd);
2818
2819 return rc;
2820}
2821
2822/*
2823 * CMD_SET_AID.
2824 */
2825#define MWL8K_FRAME_PROT_DISABLED 0x00
2826#define MWL8K_FRAME_PROT_11G 0x07
2827#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2828#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2829
2830struct mwl8k_cmd_update_set_aid {
2831 struct mwl8k_cmd_pkt header;
2832 __le16 aid;
2833
2834 /* AP's MAC address (BSSID) */
2835 __u8 bssid[ETH_ALEN];
2836 __le16 protection_mode;
2837 __u8 supp_rates[14];
2838} __packed;
2839
2840static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2841{
2842 int i;
2843 int j;
2844
2845 /*
2846 * Clear nonstandard rates 4 and 13.
2847 */
2848 mask &= 0x1fef;
2849
2850 for (i = 0, j = 0; i < 14; i++) {
2851 if (mask & (1 << i))
2852 rates[j++] = mwl8k_rates_24[i].hw_value;
2853 }
2854}
2855
2856static int
2857mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2858 struct ieee80211_vif *vif, u32 legacy_rate_mask)
2859{
2860 struct mwl8k_cmd_update_set_aid *cmd;
2861 u16 prot_mode;
2862 int rc;
2863
2864 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2865 if (cmd == NULL)
2866 return -ENOMEM;
2867
2868 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2869 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2870 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2871 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2872
2873 if (vif->bss_conf.use_cts_prot) {
2874 prot_mode = MWL8K_FRAME_PROT_11G;
2875 } else {
2876 switch (vif->bss_conf.ht_operation_mode &
2877 IEEE80211_HT_OP_MODE_PROTECTION) {
2878 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2879 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2880 break;
2881 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2882 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2883 break;
2884 default:
2885 prot_mode = MWL8K_FRAME_PROT_DISABLED;
2886 break;
2887 }
2888 }
2889 cmd->protection_mode = cpu_to_le16(prot_mode);
2890
2891 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2892
2893 rc = mwl8k_post_cmd(hw, &cmd->header);
2894 kfree(cmd);
2895
2896 return rc;
2897}
2898
2899/*
2900 * CMD_SET_RATE.
2901 */
2902struct mwl8k_cmd_set_rate {
2903 struct mwl8k_cmd_pkt header;
2904 __u8 legacy_rates[14];
2905
2906 /* Bitmap for supported MCS codes. */
2907 __u8 mcs_set[16];
2908 __u8 reserved[16];
2909} __packed;
2910
2911static int
2912mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2913 u32 legacy_rate_mask, u8 *mcs_rates)
2914{
2915 struct mwl8k_cmd_set_rate *cmd;
2916 int rc;
2917
2918 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2919 if (cmd == NULL)
2920 return -ENOMEM;
2921
2922 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2923 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2924 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2925 memcpy(cmd->mcs_set, mcs_rates, 16);
2926
2927 rc = mwl8k_post_cmd(hw, &cmd->header);
2928 kfree(cmd);
2929
2930 return rc;
2931}
2932
2933/*
2934 * CMD_FINALIZE_JOIN.
2935 */
2936#define MWL8K_FJ_BEACON_MAXLEN 128
2937
2938struct mwl8k_cmd_finalize_join {
2939 struct mwl8k_cmd_pkt header;
2940 __le32 sleep_interval; /* Number of beacon periods to sleep */
2941 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2942} __packed;
2943
2944static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2945 int framelen, int dtim)
2946{
2947 struct mwl8k_cmd_finalize_join *cmd;
2948 struct ieee80211_mgmt *payload = frame;
2949 int payload_len;
2950 int rc;
2951
2952 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2953 if (cmd == NULL)
2954 return -ENOMEM;
2955
2956 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2957 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2958 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2959
2960 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2961 if (payload_len < 0)
2962 payload_len = 0;
2963 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2964 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2965
2966 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2967
2968 rc = mwl8k_post_cmd(hw, &cmd->header);
2969 kfree(cmd);
2970
2971 return rc;
2972}
2973
2974/*
2975 * CMD_SET_RTS_THRESHOLD.
2976 */
2977struct mwl8k_cmd_set_rts_threshold {
2978 struct mwl8k_cmd_pkt header;
2979 __le16 action;
2980 __le16 threshold;
2981} __packed;
2982
2983static int
2984mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2985{
2986 struct mwl8k_cmd_set_rts_threshold *cmd;
2987 int rc;
2988
2989 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2990 if (cmd == NULL)
2991 return -ENOMEM;
2992
2993 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2994 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2995 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2996 cmd->threshold = cpu_to_le16(rts_thresh);
2997
2998 rc = mwl8k_post_cmd(hw, &cmd->header);
2999 kfree(cmd);
3000
3001 return rc;
3002}
3003
3004/*
3005 * CMD_SET_SLOT.
3006 */
3007struct mwl8k_cmd_set_slot {
3008 struct mwl8k_cmd_pkt header;
3009 __le16 action;
3010 __u8 short_slot;
3011} __packed;
3012
3013static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3014{
3015 struct mwl8k_cmd_set_slot *cmd;
3016 int rc;
3017
3018 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3019 if (cmd == NULL)
3020 return -ENOMEM;
3021
3022 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3023 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3024 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3025 cmd->short_slot = short_slot_time;
3026
3027 rc = mwl8k_post_cmd(hw, &cmd->header);
3028 kfree(cmd);
3029
3030 return rc;
3031}
3032
3033/*
3034 * CMD_SET_EDCA_PARAMS.
3035 */
3036struct mwl8k_cmd_set_edca_params {
3037 struct mwl8k_cmd_pkt header;
3038
3039 /* See MWL8K_SET_EDCA_XXX below */
3040 __le16 action;
3041
3042 /* TX opportunity in units of 32 us */
3043 __le16 txop;
3044
3045 union {
3046 struct {
3047 /* Log exponent of max contention period: 0...15 */
3048 __le32 log_cw_max;
3049
3050 /* Log exponent of min contention period: 0...15 */
3051 __le32 log_cw_min;
3052
3053 /* Adaptive interframe spacing in units of 32us */
3054 __u8 aifs;
3055
3056 /* TX queue to configure */
3057 __u8 txq;
3058 } ap;
3059 struct {
3060 /* Log exponent of max contention period: 0...15 */
3061 __u8 log_cw_max;
3062
3063 /* Log exponent of min contention period: 0...15 */
3064 __u8 log_cw_min;
3065
3066 /* Adaptive interframe spacing in units of 32us */
3067 __u8 aifs;
3068
3069 /* TX queue to configure */
3070 __u8 txq;
3071 } sta;
3072 };
3073} __packed;
3074
3075#define MWL8K_SET_EDCA_CW 0x01
3076#define MWL8K_SET_EDCA_TXOP 0x02
3077#define MWL8K_SET_EDCA_AIFS 0x04
3078
3079#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3080 MWL8K_SET_EDCA_TXOP | \
3081 MWL8K_SET_EDCA_AIFS)
3082
3083static int
3084mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3085 __u16 cw_min, __u16 cw_max,
3086 __u8 aifs, __u16 txop)
3087{
3088 struct mwl8k_priv *priv = hw->priv;
3089 struct mwl8k_cmd_set_edca_params *cmd;
3090 int rc;
3091
3092 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3093 if (cmd == NULL)
3094 return -ENOMEM;
3095
3096 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3097 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3098 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3099 cmd->txop = cpu_to_le16(txop);
3100 if (priv->ap_fw) {
3101 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3102 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3103 cmd->ap.aifs = aifs;
3104 cmd->ap.txq = qnum;
3105 } else {
3106 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3107 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3108 cmd->sta.aifs = aifs;
3109 cmd->sta.txq = qnum;
3110 }
3111
3112 rc = mwl8k_post_cmd(hw, &cmd->header);
3113 kfree(cmd);
3114
3115 return rc;
3116}
3117
3118/*
3119 * CMD_SET_WMM_MODE.
3120 */
3121struct mwl8k_cmd_set_wmm_mode {
3122 struct mwl8k_cmd_pkt header;
3123 __le16 action;
3124} __packed;
3125
3126static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3127{
3128 struct mwl8k_priv *priv = hw->priv;
3129 struct mwl8k_cmd_set_wmm_mode *cmd;
3130 int rc;
3131
3132 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3133 if (cmd == NULL)
3134 return -ENOMEM;
3135
3136 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3137 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3138 cmd->action = cpu_to_le16(!!enable);
3139
3140 rc = mwl8k_post_cmd(hw, &cmd->header);
3141 kfree(cmd);
3142
3143 if (!rc)
3144 priv->wmm_enabled = enable;
3145
3146 return rc;
3147}
3148
3149/*
3150 * CMD_MIMO_CONFIG.
3151 */
3152struct mwl8k_cmd_mimo_config {
3153 struct mwl8k_cmd_pkt header;
3154 __le32 action;
3155 __u8 rx_antenna_map;
3156 __u8 tx_antenna_map;
3157} __packed;
3158
3159static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3160{
3161 struct mwl8k_cmd_mimo_config *cmd;
3162 int rc;
3163
3164 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3165 if (cmd == NULL)
3166 return -ENOMEM;
3167
3168 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3169 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3170 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3171 cmd->rx_antenna_map = rx;
3172 cmd->tx_antenna_map = tx;
3173
3174 rc = mwl8k_post_cmd(hw, &cmd->header);
3175 kfree(cmd);
3176
3177 return rc;
3178}
3179
3180/*
3181 * CMD_USE_FIXED_RATE (STA version).
3182 */
3183struct mwl8k_cmd_use_fixed_rate_sta {
3184 struct mwl8k_cmd_pkt header;
3185 __le32 action;
3186 __le32 allow_rate_drop;
3187 __le32 num_rates;
3188 struct {
3189 __le32 is_ht_rate;
3190 __le32 enable_retry;
3191 __le32 rate;
3192 __le32 retry_count;
3193 } rate_entry[8];
3194 __le32 rate_type;
3195 __le32 reserved1;
3196 __le32 reserved2;
3197} __packed;
3198
3199#define MWL8K_USE_AUTO_RATE 0x0002
3200#define MWL8K_UCAST_RATE 0
3201
3202static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3203{
3204 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3205 int rc;
3206
3207 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3208 if (cmd == NULL)
3209 return -ENOMEM;
3210
3211 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3212 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3213 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3214 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3215
3216 rc = mwl8k_post_cmd(hw, &cmd->header);
3217 kfree(cmd);
3218
3219 return rc;
3220}
3221
3222/*
3223 * CMD_USE_FIXED_RATE (AP version).
3224 */
3225struct mwl8k_cmd_use_fixed_rate_ap {
3226 struct mwl8k_cmd_pkt header;
3227 __le32 action;
3228 __le32 allow_rate_drop;
3229 __le32 num_rates;
3230 struct mwl8k_rate_entry_ap {
3231 __le32 is_ht_rate;
3232 __le32 enable_retry;
3233 __le32 rate;
3234 __le32 retry_count;
3235 } rate_entry[4];
3236 u8 multicast_rate;
3237 u8 multicast_rate_type;
3238 u8 management_rate;
3239} __packed;
3240
3241static int
3242mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3243{
3244 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
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_USE_FIXED_RATE);
3252 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3253 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3254 cmd->multicast_rate = mcast;
3255 cmd->management_rate = mgmt;
3256
3257 rc = mwl8k_post_cmd(hw, &cmd->header);
3258 kfree(cmd);
3259
3260 return rc;
3261}
3262
3263/*
3264 * CMD_ENABLE_SNIFFER.
3265 */
3266struct mwl8k_cmd_enable_sniffer {
3267 struct mwl8k_cmd_pkt header;
3268 __le32 action;
3269} __packed;
3270
3271static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3272{
3273 struct mwl8k_cmd_enable_sniffer *cmd;
3274 int rc;
3275
3276 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3277 if (cmd == NULL)
3278 return -ENOMEM;
3279
3280 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3281 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3282 cmd->action = cpu_to_le32(!!enable);
3283
3284 rc = mwl8k_post_cmd(hw, &cmd->header);
3285 kfree(cmd);
3286
3287 return rc;
3288}
3289
3290/*
3291 * CMD_SET_MAC_ADDR.
3292 */
3293struct mwl8k_cmd_set_mac_addr {
3294 struct mwl8k_cmd_pkt header;
3295 union {
3296 struct {
3297 __le16 mac_type;
3298 __u8 mac_addr[ETH_ALEN];
3299 } mbss;
3300 __u8 mac_addr[ETH_ALEN];
3301 };
3302} __packed;
3303
3304#define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3305#define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3306#define MWL8K_MAC_TYPE_PRIMARY_AP 2
3307#define MWL8K_MAC_TYPE_SECONDARY_AP 3
3308
3309static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3310 struct ieee80211_vif *vif, u8 *mac)
3311{
3312 struct mwl8k_priv *priv = hw->priv;
3313 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3314 struct mwl8k_cmd_set_mac_addr *cmd;
3315 int mac_type;
3316 int rc;
3317
3318 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3319 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3320 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3321 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3322 else
3323 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3324 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3325 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3326 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3327 else
3328 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3329 }
3330
3331 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3332 if (cmd == NULL)
3333 return -ENOMEM;
3334
3335 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3336 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3337 if (priv->ap_fw) {
3338 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3339 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3340 } else {
3341 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3342 }
3343
3344 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3345 kfree(cmd);
3346
3347 return rc;
3348}
3349
3350/*
3351 * CMD_SET_RATEADAPT_MODE.
3352 */
3353struct mwl8k_cmd_set_rate_adapt_mode {
3354 struct mwl8k_cmd_pkt header;
3355 __le16 action;
3356 __le16 mode;
3357} __packed;
3358
3359static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3360{
3361 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3362 int rc;
3363
3364 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3365 if (cmd == NULL)
3366 return -ENOMEM;
3367
3368 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3369 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3370 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3371 cmd->mode = cpu_to_le16(mode);
3372
3373 rc = mwl8k_post_cmd(hw, &cmd->header);
3374 kfree(cmd);
3375
3376 return rc;
3377}
3378
3379/*
3380 * CMD_GET_WATCHDOG_BITMAP.
3381 */
3382struct mwl8k_cmd_get_watchdog_bitmap {
3383 struct mwl8k_cmd_pkt header;
3384 u8 bitmap;
3385} __packed;
3386
3387static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3388{
3389 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3390 int rc;
3391
3392 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3393 if (cmd == NULL)
3394 return -ENOMEM;
3395
3396 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3397 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3398
3399 rc = mwl8k_post_cmd(hw, &cmd->header);
3400 if (!rc)
3401 *bitmap = cmd->bitmap;
3402
3403 kfree(cmd);
3404
3405 return rc;
3406}
3407
3408#define INVALID_BA 0xAA
3409static void mwl8k_watchdog_ba_events(struct work_struct *work)
3410{
3411 int rc;
3412 u8 bitmap = 0, stream_index;
3413 struct mwl8k_ampdu_stream *streams;
3414 struct mwl8k_priv *priv =
3415 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3416
3417 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3418 if (rc)
3419 return;
3420
3421 if (bitmap == INVALID_BA)
3422 return;
3423
3424 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3425 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3426
3427 BUG_ON(stream_index >= priv->num_ampdu_queues);
3428
3429 streams = &priv->ampdu[stream_index];
3430
3431 if (streams->state == AMPDU_STREAM_ACTIVE)
3432 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3433
3434 return;
3435}
3436
3437
3438/*
3439 * CMD_BSS_START.
3440 */
3441struct mwl8k_cmd_bss_start {
3442 struct mwl8k_cmd_pkt header;
3443 __le32 enable;
3444} __packed;
3445
3446static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3447 struct ieee80211_vif *vif, int enable)
3448{
3449 struct mwl8k_cmd_bss_start *cmd;
3450 int rc;
3451
3452 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3453 if (cmd == NULL)
3454 return -ENOMEM;
3455
3456 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3457 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3458 cmd->enable = cpu_to_le32(enable);
3459
3460 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3461 kfree(cmd);
3462
3463 return rc;
3464}
3465
3466/*
3467 * CMD_BASTREAM.
3468 */
3469
3470/*
3471 * UPSTREAM is tx direction
3472 */
3473#define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3474#define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3475
3476enum {
3477 MWL8K_BA_CREATE,
3478 MWL8K_BA_UPDATE,
3479 MWL8K_BA_DESTROY,
3480 MWL8K_BA_FLUSH,
3481 MWL8K_BA_CHECK,
3482} ba_stream_action_type;
3483
3484
3485struct mwl8k_create_ba_stream {
3486 __le32 flags;
3487 __le32 idle_thrs;
3488 __le32 bar_thrs;
3489 __le32 window_size;
3490 u8 peer_mac_addr[6];
3491 u8 dialog_token;
3492 u8 tid;
3493 u8 queue_id;
3494 u8 param_info;
3495 __le32 ba_context;
3496 u8 reset_seq_no_flag;
3497 __le16 curr_seq_no;
3498 u8 sta_src_mac_addr[6];
3499} __packed;
3500
3501struct mwl8k_destroy_ba_stream {
3502 __le32 flags;
3503 __le32 ba_context;
3504} __packed;
3505
3506struct mwl8k_cmd_bastream {
3507 struct mwl8k_cmd_pkt header;
3508 __le32 action;
3509 union {
3510 struct mwl8k_create_ba_stream create_params;
3511 struct mwl8k_destroy_ba_stream destroy_params;
3512 };
3513} __packed;
3514
3515static int
3516mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
3517{
3518 struct mwl8k_cmd_bastream *cmd;
3519 int rc;
3520
3521 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3522 if (cmd == NULL)
3523 return -ENOMEM;
3524
3525 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3526 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3527
3528 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3529
3530 cmd->create_params.queue_id = stream->idx;
3531 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3532 ETH_ALEN);
3533 cmd->create_params.tid = stream->tid;
3534
3535 cmd->create_params.flags =
3536 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3537 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3538
3539 rc = mwl8k_post_cmd(hw, &cmd->header);
3540
3541 kfree(cmd);
3542
3543 return rc;
3544}
3545
3546static int
3547mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3548 u8 buf_size)
3549{
3550 struct mwl8k_cmd_bastream *cmd;
3551 int rc;
3552
3553 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3554 if (cmd == NULL)
3555 return -ENOMEM;
3556
3557
3558 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3559 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3560
3561 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3562
3563 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3564 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3565 cmd->create_params.queue_id = stream->idx;
3566
3567 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3568 cmd->create_params.tid = stream->tid;
3569 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3570 cmd->create_params.reset_seq_no_flag = 1;
3571
3572 cmd->create_params.param_info =
3573 (stream->sta->ht_cap.ampdu_factor &
3574 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3575 ((stream->sta->ht_cap.ampdu_density << 2) &
3576 IEEE80211_HT_AMPDU_PARM_DENSITY);
3577
3578 cmd->create_params.flags =
3579 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3580 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3581
3582 rc = mwl8k_post_cmd(hw, &cmd->header);
3583
3584 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3585 stream->sta->addr, stream->tid);
3586 kfree(cmd);
3587
3588 return rc;
3589}
3590
3591static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3592 struct mwl8k_ampdu_stream *stream)
3593{
3594 struct mwl8k_cmd_bastream *cmd;
3595
3596 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3597 if (cmd == NULL)
3598 return;
3599
3600 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3601 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3602 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3603
3604 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3605 mwl8k_post_cmd(hw, &cmd->header);
3606
3607 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3608
3609 kfree(cmd);
3610}
3611
3612/*
3613 * CMD_SET_NEW_STN.
3614 */
3615struct mwl8k_cmd_set_new_stn {
3616 struct mwl8k_cmd_pkt header;
3617 __le16 aid;
3618 __u8 mac_addr[6];
3619 __le16 stn_id;
3620 __le16 action;
3621 __le16 rsvd;
3622 __le32 legacy_rates;
3623 __u8 ht_rates[4];
3624 __le16 cap_info;
3625 __le16 ht_capabilities_info;
3626 __u8 mac_ht_param_info;
3627 __u8 rev;
3628 __u8 control_channel;
3629 __u8 add_channel;
3630 __le16 op_mode;
3631 __le16 stbc;
3632 __u8 add_qos_info;
3633 __u8 is_qos_sta;
3634 __le32 fw_sta_ptr;
3635} __packed;
3636
3637#define MWL8K_STA_ACTION_ADD 0
3638#define MWL8K_STA_ACTION_REMOVE 2
3639
3640static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3641 struct ieee80211_vif *vif,
3642 struct ieee80211_sta *sta)
3643{
3644 struct mwl8k_cmd_set_new_stn *cmd;
3645 u32 rates;
3646 int rc;
3647
3648 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3649 if (cmd == NULL)
3650 return -ENOMEM;
3651
3652 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3653 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3654 cmd->aid = cpu_to_le16(sta->aid);
3655 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3656 cmd->stn_id = cpu_to_le16(sta->aid);
3657 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3658 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3659 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3660 else
3661 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3662 cmd->legacy_rates = cpu_to_le32(rates);
3663 if (sta->ht_cap.ht_supported) {
3664 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3665 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3666 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3667 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3668 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3669 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3670 ((sta->ht_cap.ampdu_density & 7) << 2);
3671 cmd->is_qos_sta = 1;
3672 }
3673
3674 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3675 kfree(cmd);
3676
3677 return rc;
3678}
3679
3680static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3681 struct ieee80211_vif *vif)
3682{
3683 struct mwl8k_cmd_set_new_stn *cmd;
3684 int rc;
3685
3686 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3687 if (cmd == NULL)
3688 return -ENOMEM;
3689
3690 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3691 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3692 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3693
3694 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3695 kfree(cmd);
3696
3697 return rc;
3698}
3699
3700static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3701 struct ieee80211_vif *vif, u8 *addr)
3702{
3703 struct mwl8k_cmd_set_new_stn *cmd;
3704 int rc;
3705
3706 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3707 if (cmd == NULL)
3708 return -ENOMEM;
3709
3710 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3711 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3712 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3713 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3714
3715 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3716 kfree(cmd);
3717
3718 return rc;
3719}
3720
3721/*
3722 * CMD_UPDATE_ENCRYPTION.
3723 */
3724
3725#define MAX_ENCR_KEY_LENGTH 16
3726#define MIC_KEY_LENGTH 8
3727
3728struct mwl8k_cmd_update_encryption {
3729 struct mwl8k_cmd_pkt header;
3730
3731 __le32 action;
3732 __le32 reserved;
3733 __u8 mac_addr[6];
3734 __u8 encr_type;
3735
3736} __attribute__((packed));
3737
3738struct mwl8k_cmd_set_key {
3739 struct mwl8k_cmd_pkt header;
3740
3741 __le32 action;
3742 __le32 reserved;
3743 __le16 length;
3744 __le16 key_type_id;
3745 __le32 key_info;
3746 __le32 key_id;
3747 __le16 key_len;
3748 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3749 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3750 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3751 __le16 tkip_rsc_low;
3752 __le32 tkip_rsc_high;
3753 __le16 tkip_tsc_low;
3754 __le32 tkip_tsc_high;
3755 __u8 mac_addr[6];
3756} __attribute__((packed));
3757
3758enum {
3759 MWL8K_ENCR_ENABLE,
3760 MWL8K_ENCR_SET_KEY,
3761 MWL8K_ENCR_REMOVE_KEY,
3762 MWL8K_ENCR_SET_GROUP_KEY,
3763};
3764
3765#define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3766#define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3767#define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3768#define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3769#define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3770
3771enum {
3772 MWL8K_ALG_WEP,
3773 MWL8K_ALG_TKIP,
3774 MWL8K_ALG_CCMP,
3775};
3776
3777#define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3778#define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3779#define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3780#define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3781#define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3782
3783static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3784 struct ieee80211_vif *vif,
3785 u8 *addr,
3786 u8 encr_type)
3787{
3788 struct mwl8k_cmd_update_encryption *cmd;
3789 int rc;
3790
3791 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3792 if (cmd == NULL)
3793 return -ENOMEM;
3794
3795 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3796 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3797 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3798 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3799 cmd->encr_type = encr_type;
3800
3801 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3802 kfree(cmd);
3803
3804 return rc;
3805}
3806
3807static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3808 u8 *addr,
3809 struct ieee80211_key_conf *key)
3810{
3811 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3812 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3813 cmd->length = cpu_to_le16(sizeof(*cmd) -
3814 offsetof(struct mwl8k_cmd_set_key, length));
3815 cmd->key_id = cpu_to_le32(key->keyidx);
3816 cmd->key_len = cpu_to_le16(key->keylen);
3817 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3818
3819 switch (key->cipher) {
3820 case WLAN_CIPHER_SUITE_WEP40:
3821 case WLAN_CIPHER_SUITE_WEP104:
3822 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3823 if (key->keyidx == 0)
3824 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3825
3826 break;
3827 case WLAN_CIPHER_SUITE_TKIP:
3828 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3829 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3830 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3831 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3832 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3833 | MWL8K_KEY_FLAG_TSC_VALID);
3834 break;
3835 case WLAN_CIPHER_SUITE_CCMP:
3836 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3837 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3838 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3839 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3840 break;
3841 default:
3842 return -ENOTSUPP;
3843 }
3844
3845 return 0;
3846}
3847
3848static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3849 struct ieee80211_vif *vif,
3850 u8 *addr,
3851 struct ieee80211_key_conf *key)
3852{
3853 struct mwl8k_cmd_set_key *cmd;
3854 int rc;
3855 int keymlen;
3856 u32 action;
3857 u8 idx;
3858 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3859
3860 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3861 if (cmd == NULL)
3862 return -ENOMEM;
3863
3864 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3865 if (rc < 0)
3866 goto done;
3867
3868 idx = key->keyidx;
3869
3870 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3871 action = MWL8K_ENCR_SET_KEY;
3872 else
3873 action = MWL8K_ENCR_SET_GROUP_KEY;
3874
3875 switch (key->cipher) {
3876 case WLAN_CIPHER_SUITE_WEP40:
3877 case WLAN_CIPHER_SUITE_WEP104:
3878 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3879 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3880 sizeof(*key) + key->keylen);
3881 mwl8k_vif->wep_key_conf[idx].enabled = 1;
3882 }
3883
3884 keymlen = 0;
3885 action = MWL8K_ENCR_SET_KEY;
3886 break;
3887 case WLAN_CIPHER_SUITE_TKIP:
3888 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3889 break;
3890 case WLAN_CIPHER_SUITE_CCMP:
3891 keymlen = key->keylen;
3892 break;
3893 default:
3894 rc = -ENOTSUPP;
3895 goto done;
3896 }
3897
3898 memcpy(cmd->key_material, key->key, keymlen);
3899 cmd->action = cpu_to_le32(action);
3900
3901 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3902done:
3903 kfree(cmd);
3904
3905 return rc;
3906}
3907
3908static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3909 struct ieee80211_vif *vif,
3910 u8 *addr,
3911 struct ieee80211_key_conf *key)
3912{
3913 struct mwl8k_cmd_set_key *cmd;
3914 int rc;
3915 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3916
3917 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3918 if (cmd == NULL)
3919 return -ENOMEM;
3920
3921 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3922 if (rc < 0)
3923 goto done;
3924
3925 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3926 WLAN_CIPHER_SUITE_WEP104)
3927 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
3928
3929 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
3930
3931 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3932done:
3933 kfree(cmd);
3934
3935 return rc;
3936}
3937
3938static int mwl8k_set_key(struct ieee80211_hw *hw,
3939 enum set_key_cmd cmd_param,
3940 struct ieee80211_vif *vif,
3941 struct ieee80211_sta *sta,
3942 struct ieee80211_key_conf *key)
3943{
3944 int rc = 0;
3945 u8 encr_type;
3946 u8 *addr;
3947 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3948
3949 if (vif->type == NL80211_IFTYPE_STATION)
3950 return -EOPNOTSUPP;
3951
3952 if (sta == NULL)
3953 addr = hw->wiphy->perm_addr;
3954 else
3955 addr = sta->addr;
3956
3957 if (cmd_param == SET_KEY) {
3958 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3959 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
3960 if (rc)
3961 goto out;
3962
3963 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
3964 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
3965 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
3966 else
3967 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
3968
3969 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
3970 encr_type);
3971 if (rc)
3972 goto out;
3973
3974 mwl8k_vif->is_hw_crypto_enabled = true;
3975
3976 } else {
3977 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
3978
3979 if (rc)
3980 goto out;
3981
3982 mwl8k_vif->is_hw_crypto_enabled = false;
3983
3984 }
3985out:
3986 return rc;
3987}
3988
3989/*
3990 * CMD_UPDATE_STADB.
3991 */
3992struct ewc_ht_info {
3993 __le16 control1;
3994 __le16 control2;
3995 __le16 control3;
3996} __packed;
3997
3998struct peer_capability_info {
3999 /* Peer type - AP vs. STA. */
4000 __u8 peer_type;
4001
4002 /* Basic 802.11 capabilities from assoc resp. */
4003 __le16 basic_caps;
4004
4005 /* Set if peer supports 802.11n high throughput (HT). */
4006 __u8 ht_support;
4007
4008 /* Valid if HT is supported. */
4009 __le16 ht_caps;
4010 __u8 extended_ht_caps;
4011 struct ewc_ht_info ewc_info;
4012
4013 /* Legacy rate table. Intersection of our rates and peer rates. */
4014 __u8 legacy_rates[12];
4015
4016 /* HT rate table. Intersection of our rates and peer rates. */
4017 __u8 ht_rates[16];
4018 __u8 pad[16];
4019
4020 /* If set, interoperability mode, no proprietary extensions. */
4021 __u8 interop;
4022 __u8 pad2;
4023 __u8 station_id;
4024 __le16 amsdu_enabled;
4025} __packed;
4026
4027struct mwl8k_cmd_update_stadb {
4028 struct mwl8k_cmd_pkt header;
4029
4030 /* See STADB_ACTION_TYPE */
4031 __le32 action;
4032
4033 /* Peer MAC address */
4034 __u8 peer_addr[ETH_ALEN];
4035
4036 __le32 reserved;
4037
4038 /* Peer info - valid during add/update. */
4039 struct peer_capability_info peer_info;
4040} __packed;
4041
4042#define MWL8K_STA_DB_MODIFY_ENTRY 1
4043#define MWL8K_STA_DB_DEL_ENTRY 2
4044
4045/* Peer Entry flags - used to define the type of the peer node */
4046#define MWL8K_PEER_TYPE_ACCESSPOINT 2
4047
4048static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4049 struct ieee80211_vif *vif,
4050 struct ieee80211_sta *sta)
4051{
4052 struct mwl8k_cmd_update_stadb *cmd;
4053 struct peer_capability_info *p;
4054 u32 rates;
4055 int rc;
4056
4057 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4058 if (cmd == NULL)
4059 return -ENOMEM;
4060
4061 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4062 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4063 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4064 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4065
4066 p = &cmd->peer_info;
4067 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4068 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4069 p->ht_support = sta->ht_cap.ht_supported;
4070 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4071 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4072 ((sta->ht_cap.ampdu_density & 7) << 2);
4073 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4074 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4075 else
4076 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4077 legacy_rate_mask_to_array(p->legacy_rates, rates);
4078 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4079 p->interop = 1;
4080 p->amsdu_enabled = 0;
4081
4082 rc = mwl8k_post_cmd(hw, &cmd->header);
4083 kfree(cmd);
4084
4085 return rc ? rc : p->station_id;
4086}
4087
4088static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4089 struct ieee80211_vif *vif, u8 *addr)
4090{
4091 struct mwl8k_cmd_update_stadb *cmd;
4092 int rc;
4093
4094 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4095 if (cmd == NULL)
4096 return -ENOMEM;
4097
4098 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4099 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4100 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4101 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4102
4103 rc = mwl8k_post_cmd(hw, &cmd->header);
4104 kfree(cmd);
4105
4106 return rc;
4107}
4108
4109
4110/*
4111 * Interrupt handling.
4112 */
4113static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4114{
4115 struct ieee80211_hw *hw = dev_id;
4116 struct mwl8k_priv *priv = hw->priv;
4117 u32 status;
4118
4119 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4120 if (!status)
4121 return IRQ_NONE;
4122
4123 if (status & MWL8K_A2H_INT_TX_DONE) {
4124 status &= ~MWL8K_A2H_INT_TX_DONE;
4125 tasklet_schedule(&priv->poll_tx_task);
4126 }
4127
4128 if (status & MWL8K_A2H_INT_RX_READY) {
4129 status &= ~MWL8K_A2H_INT_RX_READY;
4130 tasklet_schedule(&priv->poll_rx_task);
4131 }
4132
4133 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4134 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4135 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4136 }
4137
4138 if (status)
4139 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4140
4141 if (status & MWL8K_A2H_INT_OPC_DONE) {
4142 if (priv->hostcmd_wait != NULL)
4143 complete(priv->hostcmd_wait);
4144 }
4145
4146 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4147 if (!mutex_is_locked(&priv->fw_mutex) &&
4148 priv->radio_on && priv->pending_tx_pkts)
4149 mwl8k_tx_start(priv);
4150 }
4151
4152 return IRQ_HANDLED;
4153}
4154
4155static void mwl8k_tx_poll(unsigned long data)
4156{
4157 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4158 struct mwl8k_priv *priv = hw->priv;
4159 int limit;
4160 int i;
4161
4162 limit = 32;
4163
4164 spin_lock_bh(&priv->tx_lock);
4165
4166 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4167 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4168
4169 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4170 complete(priv->tx_wait);
4171 priv->tx_wait = NULL;
4172 }
4173
4174 spin_unlock_bh(&priv->tx_lock);
4175
4176 if (limit) {
4177 writel(~MWL8K_A2H_INT_TX_DONE,
4178 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4179 } else {
4180 tasklet_schedule(&priv->poll_tx_task);
4181 }
4182}
4183
4184static void mwl8k_rx_poll(unsigned long data)
4185{
4186 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4187 struct mwl8k_priv *priv = hw->priv;
4188 int limit;
4189
4190 limit = 32;
4191 limit -= rxq_process(hw, 0, limit);
4192 limit -= rxq_refill(hw, 0, limit);
4193
4194 if (limit) {
4195 writel(~MWL8K_A2H_INT_RX_READY,
4196 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4197 } else {
4198 tasklet_schedule(&priv->poll_rx_task);
4199 }
4200}
4201
4202
4203/*
4204 * Core driver operations.
4205 */
4206static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4207{
4208 struct mwl8k_priv *priv = hw->priv;
4209 int index = skb_get_queue_mapping(skb);
4210
4211 if (!priv->radio_on) {
4212 wiphy_debug(hw->wiphy,
4213 "dropped TX frame since radio disabled\n");
4214 dev_kfree_skb(skb);
4215 return;
4216 }
4217
4218 mwl8k_txq_xmit(hw, index, skb);
4219}
4220
4221static int mwl8k_start(struct ieee80211_hw *hw)
4222{
4223 struct mwl8k_priv *priv = hw->priv;
4224 int rc;
4225
4226 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4227 IRQF_SHARED, MWL8K_NAME, hw);
4228 if (rc) {
4229 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4230 return -EIO;
4231 }
4232
4233 /* Enable TX reclaim and RX tasklets. */
4234 tasklet_enable(&priv->poll_tx_task);
4235 tasklet_enable(&priv->poll_rx_task);
4236
4237 /* Enable interrupts */
4238 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4239
4240 rc = mwl8k_fw_lock(hw);
4241 if (!rc) {
4242 rc = mwl8k_cmd_radio_enable(hw);
4243
4244 if (!priv->ap_fw) {
4245 if (!rc)
4246 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4247
4248 if (!rc)
4249 rc = mwl8k_cmd_set_pre_scan(hw);
4250
4251 if (!rc)
4252 rc = mwl8k_cmd_set_post_scan(hw,
4253 "\x00\x00\x00\x00\x00\x00");
4254 }
4255
4256 if (!rc)
4257 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4258
4259 if (!rc)
4260 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4261
4262 mwl8k_fw_unlock(hw);
4263 }
4264
4265 if (rc) {
4266 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4267 free_irq(priv->pdev->irq, hw);
4268 tasklet_disable(&priv->poll_tx_task);
4269 tasklet_disable(&priv->poll_rx_task);
4270 }
4271
4272 return rc;
4273}
4274
4275static void mwl8k_stop(struct ieee80211_hw *hw)
4276{
4277 struct mwl8k_priv *priv = hw->priv;
4278 int i;
4279
4280 mwl8k_cmd_radio_disable(hw);
4281
4282 ieee80211_stop_queues(hw);
4283
4284 /* Disable interrupts */
4285 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4286 free_irq(priv->pdev->irq, hw);
4287
4288 /* Stop finalize join worker */
4289 cancel_work_sync(&priv->finalize_join_worker);
4290 cancel_work_sync(&priv->watchdog_ba_handle);
4291 if (priv->beacon_skb != NULL)
4292 dev_kfree_skb(priv->beacon_skb);
4293
4294 /* Stop TX reclaim and RX tasklets. */
4295 tasklet_disable(&priv->poll_tx_task);
4296 tasklet_disable(&priv->poll_rx_task);
4297
4298 /* Return all skbs to mac80211 */
4299 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4300 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4301}
4302
4303static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4304
4305static int mwl8k_add_interface(struct ieee80211_hw *hw,
4306 struct ieee80211_vif *vif)
4307{
4308 struct mwl8k_priv *priv = hw->priv;
4309 struct mwl8k_vif *mwl8k_vif;
4310 u32 macids_supported;
4311 int macid, rc;
4312 struct mwl8k_device_info *di;
4313
4314 /*
4315 * Reject interface creation if sniffer mode is active, as
4316 * STA operation is mutually exclusive with hardware sniffer
4317 * mode. (Sniffer mode is only used on STA firmware.)
4318 */
4319 if (priv->sniffer_enabled) {
4320 wiphy_info(hw->wiphy,
4321 "unable to create STA interface because sniffer mode is enabled\n");
4322 return -EINVAL;
4323 }
4324
4325 di = priv->device_info;
4326 switch (vif->type) {
4327 case NL80211_IFTYPE_AP:
4328 if (!priv->ap_fw && di->fw_image_ap) {
4329 /* we must load the ap fw to meet this request */
4330 if (!list_empty(&priv->vif_list))
4331 return -EBUSY;
4332 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4333 if (rc)
4334 return rc;
4335 }
4336 macids_supported = priv->ap_macids_supported;
4337 break;
4338 case NL80211_IFTYPE_STATION:
4339 if (priv->ap_fw && di->fw_image_sta) {
4340 /* we must load the sta fw to meet this request */
4341 if (!list_empty(&priv->vif_list))
4342 return -EBUSY;
4343 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4344 if (rc)
4345 return rc;
4346 }
4347 macids_supported = priv->sta_macids_supported;
4348 break;
4349 default:
4350 return -EINVAL;
4351 }
4352
4353 macid = ffs(macids_supported & ~priv->macids_used);
4354 if (!macid--)
4355 return -EBUSY;
4356
4357 /* Setup driver private area. */
4358 mwl8k_vif = MWL8K_VIF(vif);
4359 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4360 mwl8k_vif->vif = vif;
4361 mwl8k_vif->macid = macid;
4362 mwl8k_vif->seqno = 0;
4363 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4364 mwl8k_vif->is_hw_crypto_enabled = false;
4365
4366 /* Set the mac address. */
4367 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4368
4369 if (priv->ap_fw)
4370 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4371
4372 priv->macids_used |= 1 << mwl8k_vif->macid;
4373 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4374
4375 return 0;
4376}
4377
4378static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4379 struct ieee80211_vif *vif)
4380{
4381 struct mwl8k_priv *priv = hw->priv;
4382 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4383
4384 if (priv->ap_fw)
4385 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4386
4387 mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
4388
4389 priv->macids_used &= ~(1 << mwl8k_vif->macid);
4390 list_del(&mwl8k_vif->list);
4391}
4392
4393static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4394{
4395 struct ieee80211_conf *conf = &hw->conf;
4396 struct mwl8k_priv *priv = hw->priv;
4397 int rc;
4398
4399 if (conf->flags & IEEE80211_CONF_IDLE) {
4400 mwl8k_cmd_radio_disable(hw);
4401 return 0;
4402 }
4403
4404 rc = mwl8k_fw_lock(hw);
4405 if (rc)
4406 return rc;
4407
4408 rc = mwl8k_cmd_radio_enable(hw);
4409 if (rc)
4410 goto out;
4411
4412 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4413 if (rc)
4414 goto out;
4415
4416 if (conf->power_level > 18)
4417 conf->power_level = 18;
4418
4419 if (priv->ap_fw) {
4420 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4421 if (rc)
4422 goto out;
4423
4424 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4425 if (rc)
4426 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4427 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4428 if (rc)
4429 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4430
4431 } else {
4432 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4433 if (rc)
4434 goto out;
4435 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4436 }
4437
4438out:
4439 mwl8k_fw_unlock(hw);
4440
4441 return rc;
4442}
4443
4444static void
4445mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4446 struct ieee80211_bss_conf *info, u32 changed)
4447{
4448 struct mwl8k_priv *priv = hw->priv;
4449 u32 ap_legacy_rates;
4450 u8 ap_mcs_rates[16];
4451 int rc;
4452
4453 if (mwl8k_fw_lock(hw))
4454 return;
4455
4456 /*
4457 * No need to capture a beacon if we're no longer associated.
4458 */
4459 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4460 priv->capture_beacon = false;
4461
4462 /*
4463 * Get the AP's legacy and MCS rates.
4464 */
4465 if (vif->bss_conf.assoc) {
4466 struct ieee80211_sta *ap;
4467
4468 rcu_read_lock();
4469
4470 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4471 if (ap == NULL) {
4472 rcu_read_unlock();
4473 goto out;
4474 }
4475
4476 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4477 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4478 } else {
4479 ap_legacy_rates =
4480 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4481 }
4482 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4483
4484 rcu_read_unlock();
4485 }
4486
4487 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4488 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4489 if (rc)
4490 goto out;
4491
4492 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4493 if (rc)
4494 goto out;
4495 }
4496
4497 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4498 rc = mwl8k_set_radio_preamble(hw,
4499 vif->bss_conf.use_short_preamble);
4500 if (rc)
4501 goto out;
4502 }
4503
4504 if (changed & BSS_CHANGED_ERP_SLOT) {
4505 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4506 if (rc)
4507 goto out;
4508 }
4509
4510 if (vif->bss_conf.assoc &&
4511 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4512 BSS_CHANGED_HT))) {
4513 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4514 if (rc)
4515 goto out;
4516 }
4517
4518 if (vif->bss_conf.assoc &&
4519 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4520 /*
4521 * Finalize the join. Tell rx handler to process
4522 * next beacon from our BSSID.
4523 */
4524 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4525 priv->capture_beacon = true;
4526 }
4527
4528out:
4529 mwl8k_fw_unlock(hw);
4530}
4531
4532static void
4533mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4534 struct ieee80211_bss_conf *info, u32 changed)
4535{
4536 int rc;
4537
4538 if (mwl8k_fw_lock(hw))
4539 return;
4540
4541 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4542 rc = mwl8k_set_radio_preamble(hw,
4543 vif->bss_conf.use_short_preamble);
4544 if (rc)
4545 goto out;
4546 }
4547
4548 if (changed & BSS_CHANGED_BASIC_RATES) {
4549 int idx;
4550 int rate;
4551
4552 /*
4553 * Use lowest supported basic rate for multicasts
4554 * and management frames (such as probe responses --
4555 * beacons will always go out at 1 Mb/s).
4556 */
4557 idx = ffs(vif->bss_conf.basic_rates);
4558 if (idx)
4559 idx--;
4560
4561 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4562 rate = mwl8k_rates_24[idx].hw_value;
4563 else
4564 rate = mwl8k_rates_50[idx].hw_value;
4565
4566 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4567 }
4568
4569 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4570 struct sk_buff *skb;
4571
4572 skb = ieee80211_beacon_get(hw, vif);
4573 if (skb != NULL) {
4574 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4575 kfree_skb(skb);
4576 }
4577 }
4578
4579 if (changed & BSS_CHANGED_BEACON_ENABLED)
4580 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4581
4582out:
4583 mwl8k_fw_unlock(hw);
4584}
4585
4586static void
4587mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4588 struct ieee80211_bss_conf *info, u32 changed)
4589{
4590 struct mwl8k_priv *priv = hw->priv;
4591
4592 if (!priv->ap_fw)
4593 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4594 else
4595 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4596}
4597
4598static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4599 struct netdev_hw_addr_list *mc_list)
4600{
4601 struct mwl8k_cmd_pkt *cmd;
4602
4603 /*
4604 * Synthesize and return a command packet that programs the
4605 * hardware multicast address filter. At this point we don't
4606 * know whether FIF_ALLMULTI is being requested, but if it is,
4607 * we'll end up throwing this packet away and creating a new
4608 * one in mwl8k_configure_filter().
4609 */
4610 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4611
4612 return (unsigned long)cmd;
4613}
4614
4615static int
4616mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4617 unsigned int changed_flags,
4618 unsigned int *total_flags)
4619{
4620 struct mwl8k_priv *priv = hw->priv;
4621
4622 /*
4623 * Hardware sniffer mode is mutually exclusive with STA
4624 * operation, so refuse to enable sniffer mode if a STA
4625 * interface is active.
4626 */
4627 if (!list_empty(&priv->vif_list)) {
4628 if (net_ratelimit())
4629 wiphy_info(hw->wiphy,
4630 "not enabling sniffer mode because STA interface is active\n");
4631 return 0;
4632 }
4633
4634 if (!priv->sniffer_enabled) {
4635 if (mwl8k_cmd_enable_sniffer(hw, 1))
4636 return 0;
4637 priv->sniffer_enabled = true;
4638 }
4639
4640 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4641 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4642 FIF_OTHER_BSS;
4643
4644 return 1;
4645}
4646
4647static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4648{
4649 if (!list_empty(&priv->vif_list))
4650 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4651
4652 return NULL;
4653}
4654
4655static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4656 unsigned int changed_flags,
4657 unsigned int *total_flags,
4658 u64 multicast)
4659{
4660 struct mwl8k_priv *priv = hw->priv;
4661 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4662
4663 /*
4664 * AP firmware doesn't allow fine-grained control over
4665 * the receive filter.
4666 */
4667 if (priv->ap_fw) {
4668 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4669 kfree(cmd);
4670 return;
4671 }
4672
4673 /*
4674 * Enable hardware sniffer mode if FIF_CONTROL or
4675 * FIF_OTHER_BSS is requested.
4676 */
4677 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4678 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4679 kfree(cmd);
4680 return;
4681 }
4682
4683 /* Clear unsupported feature flags */
4684 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4685
4686 if (mwl8k_fw_lock(hw)) {
4687 kfree(cmd);
4688 return;
4689 }
4690
4691 if (priv->sniffer_enabled) {
4692 mwl8k_cmd_enable_sniffer(hw, 0);
4693 priv->sniffer_enabled = false;
4694 }
4695
4696 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4697 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4698 /*
4699 * Disable the BSS filter.
4700 */
4701 mwl8k_cmd_set_pre_scan(hw);
4702 } else {
4703 struct mwl8k_vif *mwl8k_vif;
4704 const u8 *bssid;
4705
4706 /*
4707 * Enable the BSS filter.
4708 *
4709 * If there is an active STA interface, use that
4710 * interface's BSSID, otherwise use a dummy one
4711 * (where the OUI part needs to be nonzero for
4712 * the BSSID to be accepted by POST_SCAN).
4713 */
4714 mwl8k_vif = mwl8k_first_vif(priv);
4715 if (mwl8k_vif != NULL)
4716 bssid = mwl8k_vif->vif->bss_conf.bssid;
4717 else
4718 bssid = "\x01\x00\x00\x00\x00\x00";
4719
4720 mwl8k_cmd_set_post_scan(hw, bssid);
4721 }
4722 }
4723
4724 /*
4725 * If FIF_ALLMULTI is being requested, throw away the command
4726 * packet that ->prepare_multicast() built and replace it with
4727 * a command packet that enables reception of all multicast
4728 * packets.
4729 */
4730 if (*total_flags & FIF_ALLMULTI) {
4731 kfree(cmd);
4732 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4733 }
4734
4735 if (cmd != NULL) {
4736 mwl8k_post_cmd(hw, cmd);
4737 kfree(cmd);
4738 }
4739
4740 mwl8k_fw_unlock(hw);
4741}
4742
4743static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4744{
4745 return mwl8k_cmd_set_rts_threshold(hw, value);
4746}
4747
4748static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4749 struct ieee80211_vif *vif,
4750 struct ieee80211_sta *sta)
4751{
4752 struct mwl8k_priv *priv = hw->priv;
4753
4754 if (priv->ap_fw)
4755 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4756 else
4757 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4758}
4759
4760static int mwl8k_sta_add(struct ieee80211_hw *hw,
4761 struct ieee80211_vif *vif,
4762 struct ieee80211_sta *sta)
4763{
4764 struct mwl8k_priv *priv = hw->priv;
4765 int ret;
4766 int i;
4767 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4768 struct ieee80211_key_conf *key;
4769
4770 if (!priv->ap_fw) {
4771 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4772 if (ret >= 0) {
4773 MWL8K_STA(sta)->peer_id = ret;
4774 if (sta->ht_cap.ht_supported)
4775 MWL8K_STA(sta)->is_ampdu_allowed = true;
4776 ret = 0;
4777 }
4778
4779 } else {
4780 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4781 }
4782
4783 for (i = 0; i < NUM_WEP_KEYS; i++) {
4784 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4785 if (mwl8k_vif->wep_key_conf[i].enabled)
4786 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4787 }
4788 return ret;
4789}
4790
4791static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4792 const struct ieee80211_tx_queue_params *params)
4793{
4794 struct mwl8k_priv *priv = hw->priv;
4795 int rc;
4796
4797 rc = mwl8k_fw_lock(hw);
4798 if (!rc) {
4799 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
4800 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4801
4802 if (!priv->wmm_enabled)
4803 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4804
4805 if (!rc) {
4806 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
4807 rc = mwl8k_cmd_set_edca_params(hw, q,
4808 params->cw_min,
4809 params->cw_max,
4810 params->aifs,
4811 params->txop);
4812 }
4813
4814 mwl8k_fw_unlock(hw);
4815 }
4816
4817 return rc;
4818}
4819
4820static int mwl8k_get_stats(struct ieee80211_hw *hw,
4821 struct ieee80211_low_level_stats *stats)
4822{
4823 return mwl8k_cmd_get_stat(hw, stats);
4824}
4825
4826static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4827 struct survey_info *survey)
4828{
4829 struct mwl8k_priv *priv = hw->priv;
4830 struct ieee80211_conf *conf = &hw->conf;
4831
4832 if (idx != 0)
4833 return -ENOENT;
4834
4835 survey->channel = conf->channel;
4836 survey->filled = SURVEY_INFO_NOISE_DBM;
4837 survey->noise = priv->noise;
4838
4839 return 0;
4840}
4841
4842#define MAX_AMPDU_ATTEMPTS 5
4843
4844static int
4845mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4846 enum ieee80211_ampdu_mlme_action action,
4847 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4848 u8 buf_size)
4849{
4850
4851 int i, rc = 0;
4852 struct mwl8k_priv *priv = hw->priv;
4853 struct mwl8k_ampdu_stream *stream;
4854 u8 *addr = sta->addr;
4855
4856 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4857 return -ENOTSUPP;
4858
4859 spin_lock(&priv->stream_lock);
4860 stream = mwl8k_lookup_stream(hw, addr, tid);
4861
4862 switch (action) {
4863 case IEEE80211_AMPDU_RX_START:
4864 case IEEE80211_AMPDU_RX_STOP:
4865 break;
4866 case IEEE80211_AMPDU_TX_START:
4867 /* By the time we get here the hw queues may contain outgoing
4868 * packets for this RA/TID that are not part of this BA
4869 * session. The hw will assign sequence numbers to these
4870 * packets as they go out. So if we query the hw for its next
4871 * sequence number and use that for the SSN here, it may end up
4872 * being wrong, which will lead to sequence number mismatch at
4873 * the recipient. To avoid this, we reset the sequence number
4874 * to O for the first MPDU in this BA stream.
4875 */
4876 *ssn = 0;
4877 if (stream == NULL) {
4878 /* This means that somebody outside this driver called
4879 * ieee80211_start_tx_ba_session. This is unexpected
4880 * because we do our own rate control. Just warn and
4881 * move on.
4882 */
4883 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
4884 "Proceeding anyway.\n", __func__);
4885 stream = mwl8k_add_stream(hw, sta, tid);
4886 }
4887 if (stream == NULL) {
4888 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
4889 rc = -EBUSY;
4890 break;
4891 }
4892 stream->state = AMPDU_STREAM_IN_PROGRESS;
4893
4894 /* Release the lock before we do the time consuming stuff */
4895 spin_unlock(&priv->stream_lock);
4896 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
4897 rc = mwl8k_check_ba(hw, stream);
4898
4899 if (!rc)
4900 break;
4901 /*
4902 * HW queues take time to be flushed, give them
4903 * sufficient time
4904 */
4905
4906 msleep(1000);
4907 }
4908 spin_lock(&priv->stream_lock);
4909 if (rc) {
4910 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
4911 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
4912 mwl8k_remove_stream(hw, stream);
4913 rc = -EBUSY;
4914 break;
4915 }
4916 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
4917 break;
4918 case IEEE80211_AMPDU_TX_STOP:
4919 if (stream == NULL)
4920 break;
4921 if (stream->state == AMPDU_STREAM_ACTIVE) {
4922 spin_unlock(&priv->stream_lock);
4923 mwl8k_destroy_ba(hw, stream);
4924 spin_lock(&priv->stream_lock);
4925 }
4926 mwl8k_remove_stream(hw, stream);
4927 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
4928 break;
4929 case IEEE80211_AMPDU_TX_OPERATIONAL:
4930 BUG_ON(stream == NULL);
4931 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
4932 spin_unlock(&priv->stream_lock);
4933 rc = mwl8k_create_ba(hw, stream, buf_size);
4934 spin_lock(&priv->stream_lock);
4935 if (!rc)
4936 stream->state = AMPDU_STREAM_ACTIVE;
4937 else {
4938 spin_unlock(&priv->stream_lock);
4939 mwl8k_destroy_ba(hw, stream);
4940 spin_lock(&priv->stream_lock);
4941 wiphy_debug(hw->wiphy,
4942 "Failed adding stream for sta %pM tid %d\n",
4943 addr, tid);
4944 mwl8k_remove_stream(hw, stream);
4945 }
4946 break;
4947
4948 default:
4949 rc = -ENOTSUPP;
4950 }
4951
4952 spin_unlock(&priv->stream_lock);
4953 return rc;
4954}
4955
4956static const struct ieee80211_ops mwl8k_ops = {
4957 .tx = mwl8k_tx,
4958 .start = mwl8k_start,
4959 .stop = mwl8k_stop,
4960 .add_interface = mwl8k_add_interface,
4961 .remove_interface = mwl8k_remove_interface,
4962 .config = mwl8k_config,
4963 .bss_info_changed = mwl8k_bss_info_changed,
4964 .prepare_multicast = mwl8k_prepare_multicast,
4965 .configure_filter = mwl8k_configure_filter,
4966 .set_key = mwl8k_set_key,
4967 .set_rts_threshold = mwl8k_set_rts_threshold,
4968 .sta_add = mwl8k_sta_add,
4969 .sta_remove = mwl8k_sta_remove,
4970 .conf_tx = mwl8k_conf_tx,
4971 .get_stats = mwl8k_get_stats,
4972 .get_survey = mwl8k_get_survey,
4973 .ampdu_action = mwl8k_ampdu_action,
4974};
4975
4976static void mwl8k_finalize_join_worker(struct work_struct *work)
4977{
4978 struct mwl8k_priv *priv =
4979 container_of(work, struct mwl8k_priv, finalize_join_worker);
4980 struct sk_buff *skb = priv->beacon_skb;
4981 struct ieee80211_mgmt *mgmt = (void *)skb->data;
4982 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
4983 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
4984 mgmt->u.beacon.variable, len);
4985 int dtim_period = 1;
4986
4987 if (tim && tim[1] >= 2)
4988 dtim_period = tim[3];
4989
4990 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
4991
4992 dev_kfree_skb(skb);
4993 priv->beacon_skb = NULL;
4994}
4995
4996enum {
4997 MWL8363 = 0,
4998 MWL8687,
4999 MWL8366,
5000};
5001
5002#define MWL8K_8366_AP_FW_API 2
5003#define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5004#define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5005
5006static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
5007 [MWL8363] = {
5008 .part_name = "88w8363",
5009 .helper_image = "mwl8k/helper_8363.fw",
5010 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5011 },
5012 [MWL8687] = {
5013 .part_name = "88w8687",
5014 .helper_image = "mwl8k/helper_8687.fw",
5015 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5016 },
5017 [MWL8366] = {
5018 .part_name = "88w8366",
5019 .helper_image = "mwl8k/helper_8366.fw",
5020 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5021 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5022 .fw_api_ap = MWL8K_8366_AP_FW_API,
5023 .ap_rxd_ops = &rxd_8366_ap_ops,
5024 },
5025};
5026
5027MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5028MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5029MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5030MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5031MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5032MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5033MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5034
5035static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5036 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5037 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5038 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5039 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5040 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5041 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5042 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5043 { },
5044};
5045MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5046
5047static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5048{
5049 int rc;
5050 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5051 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5052 priv->fw_pref, priv->fw_alt);
5053 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5054 if (rc) {
5055 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5056 pci_name(priv->pdev), priv->fw_alt);
5057 return rc;
5058 }
5059 return 0;
5060}
5061
5062static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5063static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5064{
5065 struct mwl8k_priv *priv = context;
5066 struct mwl8k_device_info *di = priv->device_info;
5067 int rc;
5068
5069 switch (priv->fw_state) {
5070 case FW_STATE_INIT:
5071 if (!fw) {
5072 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5073 pci_name(priv->pdev), di->helper_image);
5074 goto fail;
5075 }
5076 priv->fw_helper = fw;
5077 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5078 true);
5079 if (rc && priv->fw_alt) {
5080 rc = mwl8k_request_alt_fw(priv);
5081 if (rc)
5082 goto fail;
5083 priv->fw_state = FW_STATE_LOADING_ALT;
5084 } else if (rc)
5085 goto fail;
5086 else
5087 priv->fw_state = FW_STATE_LOADING_PREF;
5088 break;
5089
5090 case FW_STATE_LOADING_PREF:
5091 if (!fw) {
5092 if (priv->fw_alt) {
5093 rc = mwl8k_request_alt_fw(priv);
5094 if (rc)
5095 goto fail;
5096 priv->fw_state = FW_STATE_LOADING_ALT;
5097 } else
5098 goto fail;
5099 } else {
5100 priv->fw_ucode = fw;
5101 rc = mwl8k_firmware_load_success(priv);
5102 if (rc)
5103 goto fail;
5104 else
5105 complete(&priv->firmware_loading_complete);
5106 }
5107 break;
5108
5109 case FW_STATE_LOADING_ALT:
5110 if (!fw) {
5111 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5112 pci_name(priv->pdev), di->helper_image);
5113 goto fail;
5114 }
5115 priv->fw_ucode = fw;
5116 rc = mwl8k_firmware_load_success(priv);
5117 if (rc)
5118 goto fail;
5119 else
5120 complete(&priv->firmware_loading_complete);
5121 break;
5122
5123 default:
5124 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5125 MWL8K_NAME, priv->fw_state);
5126 BUG_ON(1);
5127 }
5128
5129 return;
5130
5131fail:
5132 priv->fw_state = FW_STATE_ERROR;
5133 complete(&priv->firmware_loading_complete);
5134 device_release_driver(&priv->pdev->dev);
5135 mwl8k_release_firmware(priv);
5136}
5137
5138static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5139 bool nowait)
5140{
5141 struct mwl8k_priv *priv = hw->priv;
5142 int rc;
5143
5144 /* Reset firmware and hardware */
5145 mwl8k_hw_reset(priv);
5146
5147 /* Ask userland hotplug daemon for the device firmware */
5148 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5149 if (rc) {
5150 wiphy_err(hw->wiphy, "Firmware files not found\n");
5151 return rc;
5152 }
5153
5154 if (nowait)
5155 return rc;
5156
5157 /* Load firmware into hardware */
5158 rc = mwl8k_load_firmware(hw);
5159 if (rc)
5160 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5161
5162 /* Reclaim memory once firmware is successfully loaded */
5163 mwl8k_release_firmware(priv);
5164
5165 return rc;
5166}
5167
5168static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5169{
5170 struct mwl8k_priv *priv = hw->priv;
5171 int rc = 0;
5172 int i;
5173
5174 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5175 rc = mwl8k_txq_init(hw, i);
5176 if (rc)
5177 break;
5178 if (priv->ap_fw)
5179 iowrite32(priv->txq[i].txd_dma,
5180 priv->sram + priv->txq_offset[i]);
5181 }
5182 return rc;
5183}
5184
5185/* initialize hw after successfully loading a firmware image */
5186static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5187{
5188 struct mwl8k_priv *priv = hw->priv;
5189 int rc = 0;
5190 int i;
5191
5192 if (priv->ap_fw) {
5193 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5194 if (priv->rxd_ops == NULL) {
5195 wiphy_err(hw->wiphy,
5196 "Driver does not have AP firmware image support for this hardware\n");
5197 goto err_stop_firmware;
5198 }
5199 } else {
5200 priv->rxd_ops = &rxd_sta_ops;
5201 }
5202
5203 priv->sniffer_enabled = false;
5204 priv->wmm_enabled = false;
5205 priv->pending_tx_pkts = 0;
5206
5207 rc = mwl8k_rxq_init(hw, 0);
5208 if (rc)
5209 goto err_stop_firmware;
5210 rxq_refill(hw, 0, INT_MAX);
5211
5212 /* For the sta firmware, we need to know the dma addresses of tx queues
5213 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5214 * prior to issuing this command. But for the AP case, we learn the
5215 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5216 * case we must initialize the tx queues after.
5217 */
5218 priv->num_ampdu_queues = 0;
5219 if (!priv->ap_fw) {
5220 rc = mwl8k_init_txqs(hw);
5221 if (rc)
5222 goto err_free_queues;
5223 }
5224
5225 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5226 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5227 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5228 MWL8K_A2H_INT_BA_WATCHDOG,
5229 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5230 iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5231
5232 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5233 IRQF_SHARED, MWL8K_NAME, hw);
5234 if (rc) {
5235 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5236 goto err_free_queues;
5237 }
5238
5239 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5240
5241 /*
5242 * Temporarily enable interrupts. Initial firmware host
5243 * commands use interrupts and avoid polling. Disable
5244 * interrupts when done.
5245 */
5246 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5247
5248 /* Get config data, mac addrs etc */
5249 if (priv->ap_fw) {
5250 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5251 if (!rc)
5252 rc = mwl8k_init_txqs(hw);
5253 if (!rc)
5254 rc = mwl8k_cmd_set_hw_spec(hw);
5255 } else {
5256 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5257 }
5258 if (rc) {
5259 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5260 goto err_free_irq;
5261 }
5262
5263 /* Turn radio off */
5264 rc = mwl8k_cmd_radio_disable(hw);
5265 if (rc) {
5266 wiphy_err(hw->wiphy, "Cannot disable\n");
5267 goto err_free_irq;
5268 }
5269
5270 /* Clear MAC address */
5271 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5272 if (rc) {
5273 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5274 goto err_free_irq;
5275 }
5276
5277 /* Disable interrupts */
5278 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5279 free_irq(priv->pdev->irq, hw);
5280
5281 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5282 priv->device_info->part_name,
5283 priv->hw_rev, hw->wiphy->perm_addr,
5284 priv->ap_fw ? "AP" : "STA",
5285 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5286 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5287
5288 return 0;
5289
5290err_free_irq:
5291 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5292 free_irq(priv->pdev->irq, hw);
5293
5294err_free_queues:
5295 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5296 mwl8k_txq_deinit(hw, i);
5297 mwl8k_rxq_deinit(hw, 0);
5298
5299err_stop_firmware:
5300 mwl8k_hw_reset(priv);
5301
5302 return rc;
5303}
5304
5305/*
5306 * invoke mwl8k_reload_firmware to change the firmware image after the device
5307 * has already been registered
5308 */
5309static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5310{
5311 int i, rc = 0;
5312 struct mwl8k_priv *priv = hw->priv;
5313
5314 mwl8k_stop(hw);
5315 mwl8k_rxq_deinit(hw, 0);
5316
5317 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5318 mwl8k_txq_deinit(hw, i);
5319
5320 rc = mwl8k_init_firmware(hw, fw_image, false);
5321 if (rc)
5322 goto fail;
5323
5324 rc = mwl8k_probe_hw(hw);
5325 if (rc)
5326 goto fail;
5327
5328 rc = mwl8k_start(hw);
5329 if (rc)
5330 goto fail;
5331
5332 rc = mwl8k_config(hw, ~0);
5333 if (rc)
5334 goto fail;
5335
5336 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5337 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
5338 if (rc)
5339 goto fail;
5340 }
5341
5342 return rc;
5343
5344fail:
5345 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5346 return rc;
5347}
5348
5349static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5350{
5351 struct ieee80211_hw *hw = priv->hw;
5352 int i, rc;
5353
5354 rc = mwl8k_load_firmware(hw);
5355 mwl8k_release_firmware(priv);
5356 if (rc) {
5357 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5358 return rc;
5359 }
5360
5361 /*
5362 * Extra headroom is the size of the required DMA header
5363 * minus the size of the smallest 802.11 frame (CTS frame).
5364 */
5365 hw->extra_tx_headroom =
5366 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5367
5368 hw->channel_change_time = 10;
5369
5370 hw->queues = MWL8K_TX_WMM_QUEUES;
5371
5372 /* Set rssi values to dBm */
5373 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5374 hw->vif_data_size = sizeof(struct mwl8k_vif);
5375 hw->sta_data_size = sizeof(struct mwl8k_sta);
5376
5377 priv->macids_used = 0;
5378 INIT_LIST_HEAD(&priv->vif_list);
5379
5380 /* Set default radio state and preamble */
5381 priv->radio_on = 0;
5382 priv->radio_short_preamble = 0;
5383
5384 /* Finalize join worker */
5385 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5386 /* Handle watchdog ba events */
5387 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5388
5389 /* TX reclaim and RX tasklets. */
5390 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5391 tasklet_disable(&priv->poll_tx_task);
5392 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5393 tasklet_disable(&priv->poll_rx_task);
5394
5395 /* Power management cookie */
5396 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5397 if (priv->cookie == NULL)
5398 return -ENOMEM;
5399
5400 mutex_init(&priv->fw_mutex);
5401 priv->fw_mutex_owner = NULL;
5402 priv->fw_mutex_depth = 0;
5403 priv->hostcmd_wait = NULL;
5404
5405 spin_lock_init(&priv->tx_lock);
5406
5407 spin_lock_init(&priv->stream_lock);
5408
5409 priv->tx_wait = NULL;
5410
5411 rc = mwl8k_probe_hw(hw);
5412 if (rc)
5413 goto err_free_cookie;
5414
5415 hw->wiphy->interface_modes = 0;
5416 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
5417 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5418 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5419 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5420
5421 rc = ieee80211_register_hw(hw);
5422 if (rc) {
5423 wiphy_err(hw->wiphy, "Cannot register device\n");
5424 goto err_unprobe_hw;
5425 }
5426
5427 return 0;
5428
5429err_unprobe_hw:
5430 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5431 mwl8k_txq_deinit(hw, i);
5432 mwl8k_rxq_deinit(hw, 0);
5433
5434err_free_cookie:
5435 if (priv->cookie != NULL)
5436 pci_free_consistent(priv->pdev, 4,
5437 priv->cookie, priv->cookie_dma);
5438
5439 return rc;
5440}
5441static int __devinit mwl8k_probe(struct pci_dev *pdev,
5442 const struct pci_device_id *id)
5443{
5444 static int printed_version;
5445 struct ieee80211_hw *hw;
5446 struct mwl8k_priv *priv;
5447 struct mwl8k_device_info *di;
5448 int rc;
5449
5450 if (!printed_version) {
5451 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5452 printed_version = 1;
5453 }
5454
5455
5456 rc = pci_enable_device(pdev);
5457 if (rc) {
5458 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5459 MWL8K_NAME);
5460 return rc;
5461 }
5462
5463 rc = pci_request_regions(pdev, MWL8K_NAME);
5464 if (rc) {
5465 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5466 MWL8K_NAME);
5467 goto err_disable_device;
5468 }
5469
5470 pci_set_master(pdev);
5471
5472
5473 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5474 if (hw == NULL) {
5475 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5476 rc = -ENOMEM;
5477 goto err_free_reg;
5478 }
5479
5480 SET_IEEE80211_DEV(hw, &pdev->dev);
5481 pci_set_drvdata(pdev, hw);
5482
5483 priv = hw->priv;
5484 priv->hw = hw;
5485 priv->pdev = pdev;
5486 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5487
5488
5489 priv->sram = pci_iomap(pdev, 0, 0x10000);
5490 if (priv->sram == NULL) {
5491 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5492 goto err_iounmap;
5493 }
5494
5495 /*
5496 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5497 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5498 */
5499 priv->regs = pci_iomap(pdev, 1, 0x10000);
5500 if (priv->regs == NULL) {
5501 priv->regs = pci_iomap(pdev, 2, 0x10000);
5502 if (priv->regs == NULL) {
5503 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5504 goto err_iounmap;
5505 }
5506 }
5507
5508 /*
5509 * Choose the initial fw image depending on user input. If a second
5510 * image is available, make it the alternative image that will be
5511 * loaded if the first one fails.
5512 */
5513 init_completion(&priv->firmware_loading_complete);
5514 di = priv->device_info;
5515 if (ap_mode_default && di->fw_image_ap) {
5516 priv->fw_pref = di->fw_image_ap;
5517 priv->fw_alt = di->fw_image_sta;
5518 } else if (!ap_mode_default && di->fw_image_sta) {
5519 priv->fw_pref = di->fw_image_sta;
5520 priv->fw_alt = di->fw_image_ap;
5521 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5522 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5523 priv->fw_pref = di->fw_image_sta;
5524 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5525 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5526 priv->fw_pref = di->fw_image_ap;
5527 }
5528 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5529 if (rc)
5530 goto err_stop_firmware;
5531 return rc;
5532
5533err_stop_firmware:
5534 mwl8k_hw_reset(priv);
5535
5536err_iounmap:
5537 if (priv->regs != NULL)
5538 pci_iounmap(pdev, priv->regs);
5539
5540 if (priv->sram != NULL)
5541 pci_iounmap(pdev, priv->sram);
5542
5543 pci_set_drvdata(pdev, NULL);
5544 ieee80211_free_hw(hw);
5545
5546err_free_reg:
5547 pci_release_regions(pdev);
5548
5549err_disable_device:
5550 pci_disable_device(pdev);
5551
5552 return rc;
5553}
5554
5555static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
5556{
5557 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
5558}
5559
5560static void __devexit mwl8k_remove(struct pci_dev *pdev)
5561{
5562 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5563 struct mwl8k_priv *priv;
5564 int i;
5565
5566 if (hw == NULL)
5567 return;
5568 priv = hw->priv;
5569
5570 wait_for_completion(&priv->firmware_loading_complete);
5571
5572 if (priv->fw_state == FW_STATE_ERROR) {
5573 mwl8k_hw_reset(priv);
5574 goto unmap;
5575 }
5576
5577 ieee80211_stop_queues(hw);
5578
5579 ieee80211_unregister_hw(hw);
5580
5581 /* Remove TX reclaim and RX tasklets. */
5582 tasklet_kill(&priv->poll_tx_task);
5583 tasklet_kill(&priv->poll_rx_task);
5584
5585 /* Stop hardware */
5586 mwl8k_hw_reset(priv);
5587
5588 /* Return all skbs to mac80211 */
5589 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5590 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5591
5592 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5593 mwl8k_txq_deinit(hw, i);
5594
5595 mwl8k_rxq_deinit(hw, 0);
5596
5597 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5598
5599unmap:
5600 pci_iounmap(pdev, priv->regs);
5601 pci_iounmap(pdev, priv->sram);
5602 pci_set_drvdata(pdev, NULL);
5603 ieee80211_free_hw(hw);
5604 pci_release_regions(pdev);
5605 pci_disable_device(pdev);
5606}
5607
5608static struct pci_driver mwl8k_driver = {
5609 .name = MWL8K_NAME,
5610 .id_table = mwl8k_pci_id_table,
5611 .probe = mwl8k_probe,
5612 .remove = __devexit_p(mwl8k_remove),
5613 .shutdown = __devexit_p(mwl8k_shutdown),
5614};
5615
5616static int __init mwl8k_init(void)
5617{
5618 return pci_register_driver(&mwl8k_driver);
5619}
5620
5621static void __exit mwl8k_exit(void)
5622{
5623 pci_unregister_driver(&mwl8k_driver);
5624}
5625
5626module_init(mwl8k_init);
5627module_exit(mwl8k_exit);
5628
5629MODULE_DESCRIPTION(MWL8K_DESC);
5630MODULE_VERSION(MWL8K_VERSION);
5631MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5632MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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