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timerfd: Allow timers to be cancelled when clock was set
[linux-2.6/linux-mips.git] / drivers / net / wireless / mwl8k.c
blobc1ceb4b23971ea884577bb876432e4a764301446
1 /*
2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
4 *
5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12 #include <linux/init.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
16 #include <linux/spinlock.h>
17 #include <linux/list.h>
18 #include <linux/pci.h>
19 #include <linux/delay.h>
20 #include <linux/completion.h>
21 #include <linux/etherdevice.h>
22 #include <linux/slab.h>
23 #include <net/mac80211.h>
24 #include <linux/moduleparam.h>
25 #include <linux/firmware.h>
26 #include <linux/workqueue.h>
27
28 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29 #define MWL8K_NAME KBUILD_MODNAME
30 #define MWL8K_VERSION "0.12"
31
32 /* Module parameters */
33 static unsigned ap_mode_default;
34 module_param(ap_mode_default, bool, 0);
35 MODULE_PARM_DESC(ap_mode_default,
36 "Set to 1 to make ap mode the default instead of sta mode");
37
38 /* Register definitions */
39 #define MWL8K_HIU_GEN_PTR 0x00000c10
40 #define MWL8K_MODE_STA 0x0000005a
41 #define MWL8K_MODE_AP 0x000000a5
42 #define MWL8K_HIU_INT_CODE 0x00000c14
43 #define MWL8K_FWSTA_READY 0xf0f1f2f4
44 #define MWL8K_FWAP_READY 0xf1f2f4a5
45 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
46 #define MWL8K_HIU_SCRATCH 0x00000c40
47
48 /* Host->device communications */
49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
51 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
54 #define MWL8K_H2A_INT_DUMMY (1 << 20)
55 #define MWL8K_H2A_INT_RESET (1 << 15)
56 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
57 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
58
59 /* Device->host communications */
60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
62 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
65 #define MWL8K_A2H_INT_DUMMY (1 << 20)
66 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
67 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
68 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
69 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
70 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
71 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
72 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
73 #define MWL8K_A2H_INT_RX_READY (1 << 1)
74 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
75
76 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
77 MWL8K_A2H_INT_CHNL_SWITCHED | \
78 MWL8K_A2H_INT_QUEUE_EMPTY | \
79 MWL8K_A2H_INT_RADAR_DETECT | \
80 MWL8K_A2H_INT_RADIO_ON | \
81 MWL8K_A2H_INT_RADIO_OFF | \
82 MWL8K_A2H_INT_MAC_EVENT | \
83 MWL8K_A2H_INT_OPC_DONE | \
84 MWL8K_A2H_INT_RX_READY | \
85 MWL8K_A2H_INT_TX_DONE)
86
87 #define MWL8K_RX_QUEUES 1
88 #define MWL8K_TX_QUEUES 4
89
90 struct rxd_ops {
91 int rxd_size;
92 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
93 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
94 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
95 __le16 *qos, s8 *noise);
96 };
97
98 struct mwl8k_device_info {
99 char *part_name;
100 char *helper_image;
101 char *fw_image_sta;
102 char *fw_image_ap;
103 struct rxd_ops *ap_rxd_ops;
104 u32 fw_api_ap;
105 };
106
107 struct mwl8k_rx_queue {
108 int rxd_count;
109
110 /* hw receives here */
111 int head;
112
113 /* refill descs here */
114 int tail;
115
116 void *rxd;
117 dma_addr_t rxd_dma;
118 struct {
119 struct sk_buff *skb;
120 DEFINE_DMA_UNMAP_ADDR(dma);
121 } *buf;
122 };
123
124 struct mwl8k_tx_queue {
125 /* hw transmits here */
126 int head;
127
128 /* sw appends here */
129 int tail;
130
131 unsigned int len;
132 struct mwl8k_tx_desc *txd;
133 dma_addr_t txd_dma;
134 struct sk_buff **skb;
135 };
136
137 struct mwl8k_priv {
138 struct ieee80211_hw *hw;
139 struct pci_dev *pdev;
140 int irq;
141
142 struct mwl8k_device_info *device_info;
143
144 void __iomem *sram;
145 void __iomem *regs;
146
147 /* firmware */
148 const struct firmware *fw_helper;
149 const struct firmware *fw_ucode;
150
151 /* hardware/firmware parameters */
152 bool ap_fw;
153 struct rxd_ops *rxd_ops;
154 struct ieee80211_supported_band band_24;
155 struct ieee80211_channel channels_24[14];
156 struct ieee80211_rate rates_24[14];
157 struct ieee80211_supported_band band_50;
158 struct ieee80211_channel channels_50[4];
159 struct ieee80211_rate rates_50[9];
160 u32 ap_macids_supported;
161 u32 sta_macids_supported;
162
163 /* firmware access */
164 struct mutex fw_mutex;
165 struct task_struct *fw_mutex_owner;
166 int fw_mutex_depth;
167 struct completion *hostcmd_wait;
168
169 /* lock held over TX and TX reap */
170 spinlock_t tx_lock;
171
172 /* TX quiesce completion, protected by fw_mutex and tx_lock */
173 struct completion *tx_wait;
174
175 /* List of interfaces. */
176 u32 macids_used;
177 struct list_head vif_list;
178
179 /* power management status cookie from firmware */
180 u32 *cookie;
181 dma_addr_t cookie_dma;
182
183 u16 num_mcaddrs;
184 u8 hw_rev;
185 u32 fw_rev;
186
187 /*
188 * Running count of TX packets in flight, to avoid
189 * iterating over the transmit rings each time.
190 */
191 int pending_tx_pkts;
192
193 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
194 struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];
195
196 bool radio_on;
197 bool radio_short_preamble;
198 bool sniffer_enabled;
199 bool wmm_enabled;
200
201 /* XXX need to convert this to handle multiple interfaces */
202 bool capture_beacon;
203 u8 capture_bssid[ETH_ALEN];
204 struct sk_buff *beacon_skb;
205
206 /*
207 * This FJ worker has to be global as it is scheduled from the
208 * RX handler. At this point we don't know which interface it
209 * belongs to until the list of bssids waiting to complete join
210 * is checked.
211 */
212 struct work_struct finalize_join_worker;
213
214 /* Tasklet to perform TX reclaim. */
215 struct tasklet_struct poll_tx_task;
216
217 /* Tasklet to perform RX. */
218 struct tasklet_struct poll_rx_task;
219
220 /* Most recently reported noise in dBm */
221 s8 noise;
222
223 /*
224 * preserve the queue configurations so they can be restored if/when
225 * the firmware image is swapped.
226 */
227 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_QUEUES];
228
229 /* async firmware loading state */
230 unsigned fw_state;
231 char *fw_pref;
232 char *fw_alt;
233 struct completion firmware_loading_complete;
234 };
235
236 #define MAX_WEP_KEY_LEN 13
237 #define NUM_WEP_KEYS 4
238
239 /* Per interface specific private data */
240 struct mwl8k_vif {
241 struct list_head list;
242 struct ieee80211_vif *vif;
243
244 /* Firmware macid for this vif. */
245 int macid;
246
247 /* Non AMPDU sequence number assigned by driver. */
248 u16 seqno;
249
250 /* Saved WEP keys */
251 struct {
252 u8 enabled;
253 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
254 } wep_key_conf[NUM_WEP_KEYS];
255
256 /* BSSID */
257 u8 bssid[ETH_ALEN];
258
259 /* A flag to indicate is HW crypto is enabled for this bssid */
260 bool is_hw_crypto_enabled;
261 };
262 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
263 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
264
265 struct mwl8k_sta {
266 /* Index into station database. Returned by UPDATE_STADB. */
267 u8 peer_id;
268 };
269 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
270
271 static const struct ieee80211_channel mwl8k_channels_24[] = {
272 { .center_freq = 2412, .hw_value = 1, },
273 { .center_freq = 2417, .hw_value = 2, },
274 { .center_freq = 2422, .hw_value = 3, },
275 { .center_freq = 2427, .hw_value = 4, },
276 { .center_freq = 2432, .hw_value = 5, },
277 { .center_freq = 2437, .hw_value = 6, },
278 { .center_freq = 2442, .hw_value = 7, },
279 { .center_freq = 2447, .hw_value = 8, },
280 { .center_freq = 2452, .hw_value = 9, },
281 { .center_freq = 2457, .hw_value = 10, },
282 { .center_freq = 2462, .hw_value = 11, },
283 { .center_freq = 2467, .hw_value = 12, },
284 { .center_freq = 2472, .hw_value = 13, },
285 { .center_freq = 2484, .hw_value = 14, },
286 };
287
288 static const struct ieee80211_rate mwl8k_rates_24[] = {
289 { .bitrate = 10, .hw_value = 2, },
290 { .bitrate = 20, .hw_value = 4, },
291 { .bitrate = 55, .hw_value = 11, },
292 { .bitrate = 110, .hw_value = 22, },
293 { .bitrate = 220, .hw_value = 44, },
294 { .bitrate = 60, .hw_value = 12, },
295 { .bitrate = 90, .hw_value = 18, },
296 { .bitrate = 120, .hw_value = 24, },
297 { .bitrate = 180, .hw_value = 36, },
298 { .bitrate = 240, .hw_value = 48, },
299 { .bitrate = 360, .hw_value = 72, },
300 { .bitrate = 480, .hw_value = 96, },
301 { .bitrate = 540, .hw_value = 108, },
302 { .bitrate = 720, .hw_value = 144, },
303 };
304
305 static const struct ieee80211_channel mwl8k_channels_50[] = {
306 { .center_freq = 5180, .hw_value = 36, },
307 { .center_freq = 5200, .hw_value = 40, },
308 { .center_freq = 5220, .hw_value = 44, },
309 { .center_freq = 5240, .hw_value = 48, },
310 };
311
312 static const struct ieee80211_rate mwl8k_rates_50[] = {
313 { .bitrate = 60, .hw_value = 12, },
314 { .bitrate = 90, .hw_value = 18, },
315 { .bitrate = 120, .hw_value = 24, },
316 { .bitrate = 180, .hw_value = 36, },
317 { .bitrate = 240, .hw_value = 48, },
318 { .bitrate = 360, .hw_value = 72, },
319 { .bitrate = 480, .hw_value = 96, },
320 { .bitrate = 540, .hw_value = 108, },
321 { .bitrate = 720, .hw_value = 144, },
322 };
323
324 /* Set or get info from Firmware */
325 #define MWL8K_CMD_GET 0x0000
326 #define MWL8K_CMD_SET 0x0001
327 #define MWL8K_CMD_SET_LIST 0x0002
328
329 /* Firmware command codes */
330 #define MWL8K_CMD_CODE_DNLD 0x0001
331 #define MWL8K_CMD_GET_HW_SPEC 0x0003
332 #define MWL8K_CMD_SET_HW_SPEC 0x0004
333 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
334 #define MWL8K_CMD_GET_STAT 0x0014
335 #define MWL8K_CMD_RADIO_CONTROL 0x001c
336 #define MWL8K_CMD_RF_TX_POWER 0x001e
337 #define MWL8K_CMD_TX_POWER 0x001f
338 #define MWL8K_CMD_RF_ANTENNA 0x0020
339 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
340 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
341 #define MWL8K_CMD_SET_POST_SCAN 0x0108
342 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
343 #define MWL8K_CMD_SET_AID 0x010d
344 #define MWL8K_CMD_SET_RATE 0x0110
345 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
346 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
347 #define MWL8K_CMD_SET_SLOT 0x0114
348 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
349 #define MWL8K_CMD_SET_WMM_MODE 0x0123
350 #define MWL8K_CMD_MIMO_CONFIG 0x0125
351 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
352 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
353 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
354 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
355 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
356 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
357 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
358 #define MWL8K_CMD_UPDATE_STADB 0x1123
359
360 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
361 {
362 u16 command = le16_to_cpu(cmd);
363
364 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
365 snprintf(buf, bufsize, "%s", #x);\
366 return buf;\
367 } while (0)
368 switch (command & ~0x8000) {
369 MWL8K_CMDNAME(CODE_DNLD);
370 MWL8K_CMDNAME(GET_HW_SPEC);
371 MWL8K_CMDNAME(SET_HW_SPEC);
372 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
373 MWL8K_CMDNAME(GET_STAT);
374 MWL8K_CMDNAME(RADIO_CONTROL);
375 MWL8K_CMDNAME(RF_TX_POWER);
376 MWL8K_CMDNAME(TX_POWER);
377 MWL8K_CMDNAME(RF_ANTENNA);
378 MWL8K_CMDNAME(SET_BEACON);
379 MWL8K_CMDNAME(SET_PRE_SCAN);
380 MWL8K_CMDNAME(SET_POST_SCAN);
381 MWL8K_CMDNAME(SET_RF_CHANNEL);
382 MWL8K_CMDNAME(SET_AID);
383 MWL8K_CMDNAME(SET_RATE);
384 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
385 MWL8K_CMDNAME(RTS_THRESHOLD);
386 MWL8K_CMDNAME(SET_SLOT);
387 MWL8K_CMDNAME(SET_EDCA_PARAMS);
388 MWL8K_CMDNAME(SET_WMM_MODE);
389 MWL8K_CMDNAME(MIMO_CONFIG);
390 MWL8K_CMDNAME(USE_FIXED_RATE);
391 MWL8K_CMDNAME(ENABLE_SNIFFER);
392 MWL8K_CMDNAME(SET_MAC_ADDR);
393 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
394 MWL8K_CMDNAME(BSS_START);
395 MWL8K_CMDNAME(SET_NEW_STN);
396 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
397 MWL8K_CMDNAME(UPDATE_STADB);
398 default:
399 snprintf(buf, bufsize, "0x%x", cmd);
400 }
401 #undef MWL8K_CMDNAME
402
403 return buf;
404 }
405
406 /* Hardware and firmware reset */
407 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
408 {
409 iowrite32(MWL8K_H2A_INT_RESET,
410 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
411 iowrite32(MWL8K_H2A_INT_RESET,
412 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
413 msleep(20);
414 }
415
416 /* Release fw image */
417 static void mwl8k_release_fw(const struct firmware **fw)
418 {
419 if (*fw == NULL)
420 return;
421 release_firmware(*fw);
422 *fw = NULL;
423 }
424
425 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
426 {
427 mwl8k_release_fw(&priv->fw_ucode);
428 mwl8k_release_fw(&priv->fw_helper);
429 }
430
431 /* states for asynchronous f/w loading */
432 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
433 enum {
434 FW_STATE_INIT = 0,
435 FW_STATE_LOADING_PREF,
436 FW_STATE_LOADING_ALT,
437 FW_STATE_ERROR,
438 };
439
440 /* Request fw image */
441 static int mwl8k_request_fw(struct mwl8k_priv *priv,
442 const char *fname, const struct firmware **fw,
443 bool nowait)
444 {
445 /* release current image */
446 if (*fw != NULL)
447 mwl8k_release_fw(fw);
448
449 if (nowait)
450 return request_firmware_nowait(THIS_MODULE, 1, fname,
451 &priv->pdev->dev, GFP_KERNEL,
452 priv, mwl8k_fw_state_machine);
453 else
454 return request_firmware(fw, fname, &priv->pdev->dev);
455 }
456
457 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
458 bool nowait)
459 {
460 struct mwl8k_device_info *di = priv->device_info;
461 int rc;
462
463 if (di->helper_image != NULL) {
464 if (nowait)
465 rc = mwl8k_request_fw(priv, di->helper_image,
466 &priv->fw_helper, true);
467 else
468 rc = mwl8k_request_fw(priv, di->helper_image,
469 &priv->fw_helper, false);
470 if (rc)
471 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
472 pci_name(priv->pdev), di->helper_image);
473
474 if (rc || nowait)
475 return rc;
476 }
477
478 if (nowait) {
479 /*
480 * if we get here, no helper image is needed. Skip the
481 * FW_STATE_INIT state.
482 */
483 priv->fw_state = FW_STATE_LOADING_PREF;
484 rc = mwl8k_request_fw(priv, fw_image,
485 &priv->fw_ucode,
486 true);
487 } else
488 rc = mwl8k_request_fw(priv, fw_image,
489 &priv->fw_ucode, false);
490 if (rc) {
491 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
492 pci_name(priv->pdev), fw_image);
493 mwl8k_release_fw(&priv->fw_helper);
494 return rc;
495 }
496
497 return 0;
498 }
499
500 struct mwl8k_cmd_pkt {
501 __le16 code;
502 __le16 length;
503 __u8 seq_num;
504 __u8 macid;
505 __le16 result;
506 char payload[0];
507 } __packed;
508
509 /*
510 * Firmware loading.
511 */
512 static int
513 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
514 {
515 void __iomem *regs = priv->regs;
516 dma_addr_t dma_addr;
517 int loops;
518
519 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
520 if (pci_dma_mapping_error(priv->pdev, dma_addr))
521 return -ENOMEM;
522
523 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
524 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
525 iowrite32(MWL8K_H2A_INT_DOORBELL,
526 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
527 iowrite32(MWL8K_H2A_INT_DUMMY,
528 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
529
530 loops = 1000;
531 do {
532 u32 int_code;
533
534 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
535 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
536 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
537 break;
538 }
539
540 cond_resched();
541 udelay(1);
542 } while (--loops);
543
544 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
545
546 return loops ? 0 : -ETIMEDOUT;
547 }
548
549 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
550 const u8 *data, size_t length)
551 {
552 struct mwl8k_cmd_pkt *cmd;
553 int done;
554 int rc = 0;
555
556 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
557 if (cmd == NULL)
558 return -ENOMEM;
559
560 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
561 cmd->seq_num = 0;
562 cmd->macid = 0;
563 cmd->result = 0;
564
565 done = 0;
566 while (length) {
567 int block_size = length > 256 ? 256 : length;
568
569 memcpy(cmd->payload, data + done, block_size);
570 cmd->length = cpu_to_le16(block_size);
571
572 rc = mwl8k_send_fw_load_cmd(priv, cmd,
573 sizeof(*cmd) + block_size);
574 if (rc)
575 break;
576
577 done += block_size;
578 length -= block_size;
579 }
580
581 if (!rc) {
582 cmd->length = 0;
583 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
584 }
585
586 kfree(cmd);
587
588 return rc;
589 }
590
591 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
592 const u8 *data, size_t length)
593 {
594 unsigned char *buffer;
595 int may_continue, rc = 0;
596 u32 done, prev_block_size;
597
598 buffer = kmalloc(1024, GFP_KERNEL);
599 if (buffer == NULL)
600 return -ENOMEM;
601
602 done = 0;
603 prev_block_size = 0;
604 may_continue = 1000;
605 while (may_continue > 0) {
606 u32 block_size;
607
608 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
609 if (block_size & 1) {
610 block_size &= ~1;
611 may_continue--;
612 } else {
613 done += prev_block_size;
614 length -= prev_block_size;
615 }
616
617 if (block_size > 1024 || block_size > length) {
618 rc = -EOVERFLOW;
619 break;
620 }
621
622 if (length == 0) {
623 rc = 0;
624 break;
625 }
626
627 if (block_size == 0) {
628 rc = -EPROTO;
629 may_continue--;
630 udelay(1);
631 continue;
632 }
633
634 prev_block_size = block_size;
635 memcpy(buffer, data + done, block_size);
636
637 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
638 if (rc)
639 break;
640 }
641
642 if (!rc && length != 0)
643 rc = -EREMOTEIO;
644
645 kfree(buffer);
646
647 return rc;
648 }
649
650 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
651 {
652 struct mwl8k_priv *priv = hw->priv;
653 const struct firmware *fw = priv->fw_ucode;
654 int rc;
655 int loops;
656
657 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
658 const struct firmware *helper = priv->fw_helper;
659
660 if (helper == NULL) {
661 printk(KERN_ERR "%s: helper image needed but none "
662 "given\n", pci_name(priv->pdev));
663 return -EINVAL;
664 }
665
666 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
667 if (rc) {
668 printk(KERN_ERR "%s: unable to load firmware "
669 "helper image\n", pci_name(priv->pdev));
670 return rc;
671 }
672 msleep(5);
673
674 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
675 } else {
676 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
677 }
678
679 if (rc) {
680 printk(KERN_ERR "%s: unable to load firmware image\n",
681 pci_name(priv->pdev));
682 return rc;
683 }
684
685 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
686
687 loops = 500000;
688 do {
689 u32 ready_code;
690
691 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
692 if (ready_code == MWL8K_FWAP_READY) {
693 priv->ap_fw = 1;
694 break;
695 } else if (ready_code == MWL8K_FWSTA_READY) {
696 priv->ap_fw = 0;
697 break;
698 }
699
700 cond_resched();
701 udelay(1);
702 } while (--loops);
703
704 return loops ? 0 : -ETIMEDOUT;
705 }
706
707
708 /* DMA header used by firmware and hardware. */
709 struct mwl8k_dma_data {
710 __le16 fwlen;
711 struct ieee80211_hdr wh;
712 char data[0];
713 } __packed;
714
715 /* Routines to add/remove DMA header from skb. */
716 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
717 {
718 struct mwl8k_dma_data *tr;
719 int hdrlen;
720
721 tr = (struct mwl8k_dma_data *)skb->data;
722 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
723
724 if (hdrlen != sizeof(tr->wh)) {
725 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
726 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
727 *((__le16 *)(tr->data - 2)) = qos;
728 } else {
729 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
730 }
731 }
732
733 if (hdrlen != sizeof(*tr))
734 skb_pull(skb, sizeof(*tr) - hdrlen);
735 }
736
737 static void
738 mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
739 {
740 struct ieee80211_hdr *wh;
741 int hdrlen;
742 int reqd_hdrlen;
743 struct mwl8k_dma_data *tr;
744
745 /*
746 * Add a firmware DMA header; the firmware requires that we
747 * present a 2-byte payload length followed by a 4-address
748 * header (without QoS field), followed (optionally) by any
749 * WEP/ExtIV header (but only filled in for CCMP).
750 */
751 wh = (struct ieee80211_hdr *)skb->data;
752
753 hdrlen = ieee80211_hdrlen(wh->frame_control);
754 reqd_hdrlen = sizeof(*tr);
755
756 if (hdrlen != reqd_hdrlen)
757 skb_push(skb, reqd_hdrlen - hdrlen);
758
759 if (ieee80211_is_data_qos(wh->frame_control))
760 hdrlen -= IEEE80211_QOS_CTL_LEN;
761
762 tr = (struct mwl8k_dma_data *)skb->data;
763 if (wh != &tr->wh)
764 memmove(&tr->wh, wh, hdrlen);
765 if (hdrlen != sizeof(tr->wh))
766 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
767
768 /*
769 * Firmware length is the length of the fully formed "802.11
770 * payload". That is, everything except for the 802.11 header.
771 * This includes all crypto material including the MIC.
772 */
773 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
774 }
775
776 static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb)
777 {
778 struct ieee80211_hdr *wh;
779 struct ieee80211_tx_info *tx_info;
780 struct ieee80211_key_conf *key_conf;
781 int data_pad;
782
783 wh = (struct ieee80211_hdr *)skb->data;
784
785 tx_info = IEEE80211_SKB_CB(skb);
786
787 key_conf = NULL;
788 if (ieee80211_is_data(wh->frame_control))
789 key_conf = tx_info->control.hw_key;
790
791 /*
792 * Make sure the packet header is in the DMA header format (4-address
793 * without QoS), the necessary crypto padding between the header and the
794 * payload has already been provided by mac80211, but it doesn't add tail
795 * padding when HW crypto is enabled.
796 *
797 * We have the following trailer padding requirements:
798 * - WEP: 4 trailer bytes (ICV)
799 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
800 * - CCMP: 8 trailer bytes (MIC)
801 */
802 data_pad = 0;
803 if (key_conf != NULL) {
804 switch (key_conf->cipher) {
805 case WLAN_CIPHER_SUITE_WEP40:
806 case WLAN_CIPHER_SUITE_WEP104:
807 data_pad = 4;
808 break;
809 case WLAN_CIPHER_SUITE_TKIP:
810 data_pad = 12;
811 break;
812 case WLAN_CIPHER_SUITE_CCMP:
813 data_pad = 8;
814 break;
815 }
816 }
817 mwl8k_add_dma_header(skb, data_pad);
818 }
819
820 /*
821 * Packet reception for 88w8366 AP firmware.
822 */
823 struct mwl8k_rxd_8366_ap {
824 __le16 pkt_len;
825 __u8 sq2;
826 __u8 rate;
827 __le32 pkt_phys_addr;
828 __le32 next_rxd_phys_addr;
829 __le16 qos_control;
830 __le16 htsig2;
831 __le32 hw_rssi_info;
832 __le32 hw_noise_floor_info;
833 __u8 noise_floor;
834 __u8 pad0[3];
835 __u8 rssi;
836 __u8 rx_status;
837 __u8 channel;
838 __u8 rx_ctrl;
839 } __packed;
840
841 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
842 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
843 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
844
845 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
846
847 /* 8366 AP rx_status bits */
848 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
849 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
850 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
851 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
852 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
853
854 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
855 {
856 struct mwl8k_rxd_8366_ap *rxd = _rxd;
857
858 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
859 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
860 }
861
862 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
863 {
864 struct mwl8k_rxd_8366_ap *rxd = _rxd;
865
866 rxd->pkt_len = cpu_to_le16(len);
867 rxd->pkt_phys_addr = cpu_to_le32(addr);
868 wmb();
869 rxd->rx_ctrl = 0;
870 }
871
872 static int
873 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
874 __le16 *qos, s8 *noise)
875 {
876 struct mwl8k_rxd_8366_ap *rxd = _rxd;
877
878 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
879 return -1;
880 rmb();
881
882 memset(status, 0, sizeof(*status));
883
884 status->signal = -rxd->rssi;
885 *noise = -rxd->noise_floor;
886
887 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
888 status->flag |= RX_FLAG_HT;
889 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
890 status->flag |= RX_FLAG_40MHZ;
891 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
892 } else {
893 int i;
894
895 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
896 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
897 status->rate_idx = i;
898 break;
899 }
900 }
901 }
902
903 if (rxd->channel > 14) {
904 status->band = IEEE80211_BAND_5GHZ;
905 if (!(status->flag & RX_FLAG_HT))
906 status->rate_idx -= 5;
907 } else {
908 status->band = IEEE80211_BAND_2GHZ;
909 }
910 status->freq = ieee80211_channel_to_frequency(rxd->channel,
911 status->band);
912
913 *qos = rxd->qos_control;
914
915 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
916 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
917 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
918 status->flag |= RX_FLAG_MMIC_ERROR;
919
920 return le16_to_cpu(rxd->pkt_len);
921 }
922
923 static struct rxd_ops rxd_8366_ap_ops = {
924 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
925 .rxd_init = mwl8k_rxd_8366_ap_init,
926 .rxd_refill = mwl8k_rxd_8366_ap_refill,
927 .rxd_process = mwl8k_rxd_8366_ap_process,
928 };
929
930 /*
931 * Packet reception for STA firmware.
932 */
933 struct mwl8k_rxd_sta {
934 __le16 pkt_len;
935 __u8 link_quality;
936 __u8 noise_level;
937 __le32 pkt_phys_addr;
938 __le32 next_rxd_phys_addr;
939 __le16 qos_control;
940 __le16 rate_info;
941 __le32 pad0[4];
942 __u8 rssi;
943 __u8 channel;
944 __le16 pad1;
945 __u8 rx_ctrl;
946 __u8 rx_status;
947 __u8 pad2[2];
948 } __packed;
949
950 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
951 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
952 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
953 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
954 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
955 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
956
957 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
958 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
959 /* ICV=0 or MIC=1 */
960 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
961 /* Key is uploaded only in failure case */
962 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
963
964 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
965 {
966 struct mwl8k_rxd_sta *rxd = _rxd;
967
968 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
969 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
970 }
971
972 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
973 {
974 struct mwl8k_rxd_sta *rxd = _rxd;
975
976 rxd->pkt_len = cpu_to_le16(len);
977 rxd->pkt_phys_addr = cpu_to_le32(addr);
978 wmb();
979 rxd->rx_ctrl = 0;
980 }
981
982 static int
983 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
984 __le16 *qos, s8 *noise)
985 {
986 struct mwl8k_rxd_sta *rxd = _rxd;
987 u16 rate_info;
988
989 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
990 return -1;
991 rmb();
992
993 rate_info = le16_to_cpu(rxd->rate_info);
994
995 memset(status, 0, sizeof(*status));
996
997 status->signal = -rxd->rssi;
998 *noise = -rxd->noise_level;
999 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1000 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1001
1002 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1003 status->flag |= RX_FLAG_SHORTPRE;
1004 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1005 status->flag |= RX_FLAG_40MHZ;
1006 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1007 status->flag |= RX_FLAG_SHORT_GI;
1008 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1009 status->flag |= RX_FLAG_HT;
1010
1011 if (rxd->channel > 14) {
1012 status->band = IEEE80211_BAND_5GHZ;
1013 if (!(status->flag & RX_FLAG_HT))
1014 status->rate_idx -= 5;
1015 } else {
1016 status->band = IEEE80211_BAND_2GHZ;
1017 }
1018 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1019 status->band);
1020
1021 *qos = rxd->qos_control;
1022 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1023 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1024 status->flag |= RX_FLAG_MMIC_ERROR;
1025
1026 return le16_to_cpu(rxd->pkt_len);
1027 }
1028
1029 static struct rxd_ops rxd_sta_ops = {
1030 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1031 .rxd_init = mwl8k_rxd_sta_init,
1032 .rxd_refill = mwl8k_rxd_sta_refill,
1033 .rxd_process = mwl8k_rxd_sta_process,
1034 };
1035
1036
1037 #define MWL8K_RX_DESCS 256
1038 #define MWL8K_RX_MAXSZ 3800
1039
1040 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1041 {
1042 struct mwl8k_priv *priv = hw->priv;
1043 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1044 int size;
1045 int i;
1046
1047 rxq->rxd_count = 0;
1048 rxq->head = 0;
1049 rxq->tail = 0;
1050
1051 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1052
1053 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1054 if (rxq->rxd == NULL) {
1055 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1056 return -ENOMEM;
1057 }
1058 memset(rxq->rxd, 0, size);
1059
1060 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1061 if (rxq->buf == NULL) {
1062 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1063 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1064 return -ENOMEM;
1065 }
1066
1067 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1068 int desc_size;
1069 void *rxd;
1070 int nexti;
1071 dma_addr_t next_dma_addr;
1072
1073 desc_size = priv->rxd_ops->rxd_size;
1074 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1075
1076 nexti = i + 1;
1077 if (nexti == MWL8K_RX_DESCS)
1078 nexti = 0;
1079 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1080
1081 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1082 }
1083
1084 return 0;
1085 }
1086
1087 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1088 {
1089 struct mwl8k_priv *priv = hw->priv;
1090 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1091 int refilled;
1092
1093 refilled = 0;
1094 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1095 struct sk_buff *skb;
1096 dma_addr_t addr;
1097 int rx;
1098 void *rxd;
1099
1100 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1101 if (skb == NULL)
1102 break;
1103
1104 addr = pci_map_single(priv->pdev, skb->data,
1105 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1106
1107 rxq->rxd_count++;
1108 rx = rxq->tail++;
1109 if (rxq->tail == MWL8K_RX_DESCS)
1110 rxq->tail = 0;
1111 rxq->buf[rx].skb = skb;
1112 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1113
1114 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1115 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1116
1117 refilled++;
1118 }
1119
1120 return refilled;
1121 }
1122
1123 /* Must be called only when the card's reception is completely halted */
1124 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1125 {
1126 struct mwl8k_priv *priv = hw->priv;
1127 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1128 int i;
1129
1130 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1131 if (rxq->buf[i].skb != NULL) {
1132 pci_unmap_single(priv->pdev,
1133 dma_unmap_addr(&rxq->buf[i], dma),
1134 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1135 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1136
1137 kfree_skb(rxq->buf[i].skb);
1138 rxq->buf[i].skb = NULL;
1139 }
1140 }
1141
1142 kfree(rxq->buf);
1143 rxq->buf = NULL;
1144
1145 pci_free_consistent(priv->pdev,
1146 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1147 rxq->rxd, rxq->rxd_dma);
1148 rxq->rxd = NULL;
1149 }
1150
1151
1152 /*
1153 * Scan a list of BSSIDs to process for finalize join.
1154 * Allows for extension to process multiple BSSIDs.
1155 */
1156 static inline int
1157 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1158 {
1159 return priv->capture_beacon &&
1160 ieee80211_is_beacon(wh->frame_control) &&
1161 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1162 }
1163
1164 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1165 struct sk_buff *skb)
1166 {
1167 struct mwl8k_priv *priv = hw->priv;
1168
1169 priv->capture_beacon = false;
1170 memset(priv->capture_bssid, 0, ETH_ALEN);
1171
1172 /*
1173 * Use GFP_ATOMIC as rxq_process is called from
1174 * the primary interrupt handler, memory allocation call
1175 * must not sleep.
1176 */
1177 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1178 if (priv->beacon_skb != NULL)
1179 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1180 }
1181
1182 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1183 u8 *bssid)
1184 {
1185 struct mwl8k_vif *mwl8k_vif;
1186
1187 list_for_each_entry(mwl8k_vif,
1188 vif_list, list) {
1189 if (memcmp(bssid, mwl8k_vif->bssid,
1190 ETH_ALEN) == 0)
1191 return mwl8k_vif;
1192 }
1193
1194 return NULL;
1195 }
1196
1197 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1198 {
1199 struct mwl8k_priv *priv = hw->priv;
1200 struct mwl8k_vif *mwl8k_vif = NULL;
1201 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1202 int processed;
1203
1204 processed = 0;
1205 while (rxq->rxd_count && limit--) {
1206 struct sk_buff *skb;
1207 void *rxd;
1208 int pkt_len;
1209 struct ieee80211_rx_status status;
1210 struct ieee80211_hdr *wh;
1211 __le16 qos;
1212
1213 skb = rxq->buf[rxq->head].skb;
1214 if (skb == NULL)
1215 break;
1216
1217 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1218
1219 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1220 &priv->noise);
1221 if (pkt_len < 0)
1222 break;
1223
1224 rxq->buf[rxq->head].skb = NULL;
1225
1226 pci_unmap_single(priv->pdev,
1227 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1228 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1229 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1230
1231 rxq->head++;
1232 if (rxq->head == MWL8K_RX_DESCS)
1233 rxq->head = 0;
1234
1235 rxq->rxd_count--;
1236
1237 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1238
1239 /*
1240 * Check for a pending join operation. Save a
1241 * copy of the beacon and schedule a tasklet to
1242 * send a FINALIZE_JOIN command to the firmware.
1243 */
1244 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1245 mwl8k_save_beacon(hw, skb);
1246
1247 if (ieee80211_has_protected(wh->frame_control)) {
1248
1249 /* Check if hw crypto has been enabled for
1250 * this bss. If yes, set the status flags
1251 * accordingly
1252 */
1253 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1254 wh->addr1);
1255
1256 if (mwl8k_vif != NULL &&
1257 mwl8k_vif->is_hw_crypto_enabled == true) {
1258 /*
1259 * When MMIC ERROR is encountered
1260 * by the firmware, payload is
1261 * dropped and only 32 bytes of
1262 * mwl8k Firmware header is sent
1263 * to the host.
1264 *
1265 * We need to add four bytes of
1266 * key information. In it
1267 * MAC80211 expects keyidx set to
1268 * 0 for triggering Counter
1269 * Measure of MMIC failure.
1270 */
1271 if (status.flag & RX_FLAG_MMIC_ERROR) {
1272 struct mwl8k_dma_data *tr;
1273 tr = (struct mwl8k_dma_data *)skb->data;
1274 memset((void *)&(tr->data), 0, 4);
1275 pkt_len += 4;
1276 }
1277
1278 if (!ieee80211_is_auth(wh->frame_control))
1279 status.flag |= RX_FLAG_IV_STRIPPED |
1280 RX_FLAG_DECRYPTED |
1281 RX_FLAG_MMIC_STRIPPED;
1282 }
1283 }
1284
1285 skb_put(skb, pkt_len);
1286 mwl8k_remove_dma_header(skb, qos);
1287 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1288 ieee80211_rx_irqsafe(hw, skb);
1289
1290 processed++;
1291 }
1292
1293 return processed;
1294 }
1295
1296
1297 /*
1298 * Packet transmission.
1299 */
1300
1301 #define MWL8K_TXD_STATUS_OK 0x00000001
1302 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1303 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1304 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1305 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1306
1307 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1308 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1309 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1310 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1311 #define MWL8K_QOS_EOSP 0x0010
1312
1313 struct mwl8k_tx_desc {
1314 __le32 status;
1315 __u8 data_rate;
1316 __u8 tx_priority;
1317 __le16 qos_control;
1318 __le32 pkt_phys_addr;
1319 __le16 pkt_len;
1320 __u8 dest_MAC_addr[ETH_ALEN];
1321 __le32 next_txd_phys_addr;
1322 __le32 reserved;
1323 __le16 rate_info;
1324 __u8 peer_id;
1325 __u8 tx_frag_cnt;
1326 } __packed;
1327
1328 #define MWL8K_TX_DESCS 128
1329
1330 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1331 {
1332 struct mwl8k_priv *priv = hw->priv;
1333 struct mwl8k_tx_queue *txq = priv->txq + index;
1334 int size;
1335 int i;
1336
1337 txq->len = 0;
1338 txq->head = 0;
1339 txq->tail = 0;
1340
1341 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1342
1343 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1344 if (txq->txd == NULL) {
1345 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1346 return -ENOMEM;
1347 }
1348 memset(txq->txd, 0, size);
1349
1350 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1351 if (txq->skb == NULL) {
1352 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1353 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1354 return -ENOMEM;
1355 }
1356
1357 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1358 struct mwl8k_tx_desc *tx_desc;
1359 int nexti;
1360
1361 tx_desc = txq->txd + i;
1362 nexti = (i + 1) % MWL8K_TX_DESCS;
1363
1364 tx_desc->status = 0;
1365 tx_desc->next_txd_phys_addr =
1366 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1367 }
1368
1369 return 0;
1370 }
1371
1372 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1373 {
1374 iowrite32(MWL8K_H2A_INT_PPA_READY,
1375 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1376 iowrite32(MWL8K_H2A_INT_DUMMY,
1377 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1378 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1379 }
1380
1381 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1382 {
1383 struct mwl8k_priv *priv = hw->priv;
1384 int i;
1385
1386 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1387 struct mwl8k_tx_queue *txq = priv->txq + i;
1388 int fw_owned = 0;
1389 int drv_owned = 0;
1390 int unused = 0;
1391 int desc;
1392
1393 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1394 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1395 u32 status;
1396
1397 status = le32_to_cpu(tx_desc->status);
1398 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1399 fw_owned++;
1400 else
1401 drv_owned++;
1402
1403 if (tx_desc->pkt_len == 0)
1404 unused++;
1405 }
1406
1407 wiphy_err(hw->wiphy,
1408 "txq[%d] len=%d head=%d tail=%d "
1409 "fw_owned=%d drv_owned=%d unused=%d\n",
1410 i,
1411 txq->len, txq->head, txq->tail,
1412 fw_owned, drv_owned, unused);
1413 }
1414 }
1415
1416 /*
1417 * Must be called with priv->fw_mutex held and tx queues stopped.
1418 */
1419 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1420
1421 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1422 {
1423 struct mwl8k_priv *priv = hw->priv;
1424 DECLARE_COMPLETION_ONSTACK(tx_wait);
1425 int retry;
1426 int rc;
1427
1428 might_sleep();
1429
1430 /*
1431 * The TX queues are stopped at this point, so this test
1432 * doesn't need to take ->tx_lock.
1433 */
1434 if (!priv->pending_tx_pkts)
1435 return 0;
1436
1437 retry = 0;
1438 rc = 0;
1439
1440 spin_lock_bh(&priv->tx_lock);
1441 priv->tx_wait = &tx_wait;
1442 while (!rc) {
1443 int oldcount;
1444 unsigned long timeout;
1445
1446 oldcount = priv->pending_tx_pkts;
1447
1448 spin_unlock_bh(&priv->tx_lock);
1449 timeout = wait_for_completion_timeout(&tx_wait,
1450 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1451 spin_lock_bh(&priv->tx_lock);
1452
1453 if (timeout) {
1454 WARN_ON(priv->pending_tx_pkts);
1455 if (retry) {
1456 wiphy_notice(hw->wiphy, "tx rings drained\n");
1457 }
1458 break;
1459 }
1460
1461 if (priv->pending_tx_pkts < oldcount) {
1462 wiphy_notice(hw->wiphy,
1463 "waiting for tx rings to drain (%d -> %d pkts)\n",
1464 oldcount, priv->pending_tx_pkts);
1465 retry = 1;
1466 continue;
1467 }
1468
1469 priv->tx_wait = NULL;
1470
1471 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1472 MWL8K_TX_WAIT_TIMEOUT_MS);
1473 mwl8k_dump_tx_rings(hw);
1474
1475 rc = -ETIMEDOUT;
1476 }
1477 spin_unlock_bh(&priv->tx_lock);
1478
1479 return rc;
1480 }
1481
1482 #define MWL8K_TXD_SUCCESS(status) \
1483 ((status) & (MWL8K_TXD_STATUS_OK | \
1484 MWL8K_TXD_STATUS_OK_RETRY | \
1485 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1486
1487 static int
1488 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1489 {
1490 struct mwl8k_priv *priv = hw->priv;
1491 struct mwl8k_tx_queue *txq = priv->txq + index;
1492 int processed;
1493
1494 processed = 0;
1495 while (txq->len > 0 && limit--) {
1496 int tx;
1497 struct mwl8k_tx_desc *tx_desc;
1498 unsigned long addr;
1499 int size;
1500 struct sk_buff *skb;
1501 struct ieee80211_tx_info *info;
1502 u32 status;
1503
1504 tx = txq->head;
1505 tx_desc = txq->txd + tx;
1506
1507 status = le32_to_cpu(tx_desc->status);
1508
1509 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1510 if (!force)
1511 break;
1512 tx_desc->status &=
1513 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1514 }
1515
1516 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1517 BUG_ON(txq->len == 0);
1518 txq->len--;
1519 priv->pending_tx_pkts--;
1520
1521 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1522 size = le16_to_cpu(tx_desc->pkt_len);
1523 skb = txq->skb[tx];
1524 txq->skb[tx] = NULL;
1525
1526 BUG_ON(skb == NULL);
1527 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1528
1529 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1530
1531 /* Mark descriptor as unused */
1532 tx_desc->pkt_phys_addr = 0;
1533 tx_desc->pkt_len = 0;
1534
1535 info = IEEE80211_SKB_CB(skb);
1536 ieee80211_tx_info_clear_status(info);
1537
1538 /* Rate control is happening in the firmware.
1539 * Ensure no tx rate is being reported.
1540 */
1541 info->status.rates[0].idx = -1;
1542 info->status.rates[0].count = 1;
1543
1544 if (MWL8K_TXD_SUCCESS(status))
1545 info->flags |= IEEE80211_TX_STAT_ACK;
1546
1547 ieee80211_tx_status_irqsafe(hw, skb);
1548
1549 processed++;
1550 }
1551
1552 if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1553 ieee80211_wake_queue(hw, index);
1554
1555 return processed;
1556 }
1557
1558 /* must be called only when the card's transmit is completely halted */
1559 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1560 {
1561 struct mwl8k_priv *priv = hw->priv;
1562 struct mwl8k_tx_queue *txq = priv->txq + index;
1563
1564 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1565
1566 kfree(txq->skb);
1567 txq->skb = NULL;
1568
1569 pci_free_consistent(priv->pdev,
1570 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1571 txq->txd, txq->txd_dma);
1572 txq->txd = NULL;
1573 }
1574
1575 static void
1576 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1577 {
1578 struct mwl8k_priv *priv = hw->priv;
1579 struct ieee80211_tx_info *tx_info;
1580 struct mwl8k_vif *mwl8k_vif;
1581 struct ieee80211_hdr *wh;
1582 struct mwl8k_tx_queue *txq;
1583 struct mwl8k_tx_desc *tx;
1584 dma_addr_t dma;
1585 u32 txstatus;
1586 u8 txdatarate;
1587 u16 qos;
1588
1589 wh = (struct ieee80211_hdr *)skb->data;
1590 if (ieee80211_is_data_qos(wh->frame_control))
1591 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1592 else
1593 qos = 0;
1594
1595 if (priv->ap_fw)
1596 mwl8k_encapsulate_tx_frame(skb);
1597 else
1598 mwl8k_add_dma_header(skb, 0);
1599
1600 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1601
1602 tx_info = IEEE80211_SKB_CB(skb);
1603 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1604
1605 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1606 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1607 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1608 mwl8k_vif->seqno += 0x10;
1609 }
1610
1611 /* Setup firmware control bit fields for each frame type. */
1612 txstatus = 0;
1613 txdatarate = 0;
1614 if (ieee80211_is_mgmt(wh->frame_control) ||
1615 ieee80211_is_ctl(wh->frame_control)) {
1616 txdatarate = 0;
1617 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1618 } else if (ieee80211_is_data(wh->frame_control)) {
1619 txdatarate = 1;
1620 if (is_multicast_ether_addr(wh->addr1))
1621 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1622
1623 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1624 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1625 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1626 else
1627 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1628 }
1629
1630 dma = pci_map_single(priv->pdev, skb->data,
1631 skb->len, PCI_DMA_TODEVICE);
1632
1633 if (pci_dma_mapping_error(priv->pdev, dma)) {
1634 wiphy_debug(hw->wiphy,
1635 "failed to dma map skb, dropping TX frame.\n");
1636 dev_kfree_skb(skb);
1637 return;
1638 }
1639
1640 spin_lock_bh(&priv->tx_lock);
1641
1642 txq = priv->txq + index;
1643
1644 BUG_ON(txq->skb[txq->tail] != NULL);
1645 txq->skb[txq->tail] = skb;
1646
1647 tx = txq->txd + txq->tail;
1648 tx->data_rate = txdatarate;
1649 tx->tx_priority = index;
1650 tx->qos_control = cpu_to_le16(qos);
1651 tx->pkt_phys_addr = cpu_to_le32(dma);
1652 tx->pkt_len = cpu_to_le16(skb->len);
1653 tx->rate_info = 0;
1654 if (!priv->ap_fw && tx_info->control.sta != NULL)
1655 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1656 else
1657 tx->peer_id = 0;
1658 wmb();
1659 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1660
1661 txq->len++;
1662 priv->pending_tx_pkts++;
1663
1664 txq->tail++;
1665 if (txq->tail == MWL8K_TX_DESCS)
1666 txq->tail = 0;
1667
1668 if (txq->head == txq->tail)
1669 ieee80211_stop_queue(hw, index);
1670
1671 mwl8k_tx_start(priv);
1672
1673 spin_unlock_bh(&priv->tx_lock);
1674 }
1675
1676
1677 /*
1678 * Firmware access.
1679 *
1680 * We have the following requirements for issuing firmware commands:
1681 * - Some commands require that the packet transmit path is idle when
1682 * the command is issued. (For simplicity, we'll just quiesce the
1683 * transmit path for every command.)
1684 * - There are certain sequences of commands that need to be issued to
1685 * the hardware sequentially, with no other intervening commands.
1686 *
1687 * This leads to an implementation of a "firmware lock" as a mutex that
1688 * can be taken recursively, and which is taken by both the low-level
1689 * command submission function (mwl8k_post_cmd) as well as any users of
1690 * that function that require issuing of an atomic sequence of commands,
1691 * and quiesces the transmit path whenever it's taken.
1692 */
1693 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1694 {
1695 struct mwl8k_priv *priv = hw->priv;
1696
1697 if (priv->fw_mutex_owner != current) {
1698 int rc;
1699
1700 mutex_lock(&priv->fw_mutex);
1701 ieee80211_stop_queues(hw);
1702
1703 rc = mwl8k_tx_wait_empty(hw);
1704 if (rc) {
1705 ieee80211_wake_queues(hw);
1706 mutex_unlock(&priv->fw_mutex);
1707
1708 return rc;
1709 }
1710
1711 priv->fw_mutex_owner = current;
1712 }
1713
1714 priv->fw_mutex_depth++;
1715
1716 return 0;
1717 }
1718
1719 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1720 {
1721 struct mwl8k_priv *priv = hw->priv;
1722
1723 if (!--priv->fw_mutex_depth) {
1724 ieee80211_wake_queues(hw);
1725 priv->fw_mutex_owner = NULL;
1726 mutex_unlock(&priv->fw_mutex);
1727 }
1728 }
1729
1730
1731 /*
1732 * Command processing.
1733 */
1734
1735 /* Timeout firmware commands after 10s */
1736 #define MWL8K_CMD_TIMEOUT_MS 10000
1737
1738 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1739 {
1740 DECLARE_COMPLETION_ONSTACK(cmd_wait);
1741 struct mwl8k_priv *priv = hw->priv;
1742 void __iomem *regs = priv->regs;
1743 dma_addr_t dma_addr;
1744 unsigned int dma_size;
1745 int rc;
1746 unsigned long timeout = 0;
1747 u8 buf[32];
1748
1749 cmd->result = (__force __le16) 0xffff;
1750 dma_size = le16_to_cpu(cmd->length);
1751 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1752 PCI_DMA_BIDIRECTIONAL);
1753 if (pci_dma_mapping_error(priv->pdev, dma_addr))
1754 return -ENOMEM;
1755
1756 rc = mwl8k_fw_lock(hw);
1757 if (rc) {
1758 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1759 PCI_DMA_BIDIRECTIONAL);
1760 return rc;
1761 }
1762
1763 priv->hostcmd_wait = &cmd_wait;
1764 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1765 iowrite32(MWL8K_H2A_INT_DOORBELL,
1766 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1767 iowrite32(MWL8K_H2A_INT_DUMMY,
1768 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1769
1770 timeout = wait_for_completion_timeout(&cmd_wait,
1771 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1772
1773 priv->hostcmd_wait = NULL;
1774
1775 mwl8k_fw_unlock(hw);
1776
1777 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1778 PCI_DMA_BIDIRECTIONAL);
1779
1780 if (!timeout) {
1781 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
1782 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1783 MWL8K_CMD_TIMEOUT_MS);
1784 rc = -ETIMEDOUT;
1785 } else {
1786 int ms;
1787
1788 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1789
1790 rc = cmd->result ? -EINVAL : 0;
1791 if (rc)
1792 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
1793 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1794 le16_to_cpu(cmd->result));
1795 else if (ms > 2000)
1796 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
1797 mwl8k_cmd_name(cmd->code,
1798 buf, sizeof(buf)),
1799 ms);
1800 }
1801
1802 return rc;
1803 }
1804
1805 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1806 struct ieee80211_vif *vif,
1807 struct mwl8k_cmd_pkt *cmd)
1808 {
1809 if (vif != NULL)
1810 cmd->macid = MWL8K_VIF(vif)->macid;
1811 return mwl8k_post_cmd(hw, cmd);
1812 }
1813
1814 /*
1815 * Setup code shared between STA and AP firmware images.
1816 */
1817 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1818 {
1819 struct mwl8k_priv *priv = hw->priv;
1820
1821 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1822 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1823
1824 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1825 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1826
1827 priv->band_24.band = IEEE80211_BAND_2GHZ;
1828 priv->band_24.channels = priv->channels_24;
1829 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1830 priv->band_24.bitrates = priv->rates_24;
1831 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1832
1833 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1834 }
1835
1836 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1837 {
1838 struct mwl8k_priv *priv = hw->priv;
1839
1840 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1841 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1842
1843 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1844 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1845
1846 priv->band_50.band = IEEE80211_BAND_5GHZ;
1847 priv->band_50.channels = priv->channels_50;
1848 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1849 priv->band_50.bitrates = priv->rates_50;
1850 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1851
1852 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1853 }
1854
1855 /*
1856 * CMD_GET_HW_SPEC (STA version).
1857 */
1858 struct mwl8k_cmd_get_hw_spec_sta {
1859 struct mwl8k_cmd_pkt header;
1860 __u8 hw_rev;
1861 __u8 host_interface;
1862 __le16 num_mcaddrs;
1863 __u8 perm_addr[ETH_ALEN];
1864 __le16 region_code;
1865 __le32 fw_rev;
1866 __le32 ps_cookie;
1867 __le32 caps;
1868 __u8 mcs_bitmap[16];
1869 __le32 rx_queue_ptr;
1870 __le32 num_tx_queues;
1871 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1872 __le32 caps2;
1873 __le32 num_tx_desc_per_queue;
1874 __le32 total_rxd;
1875 } __packed;
1876
1877 #define MWL8K_CAP_MAX_AMSDU 0x20000000
1878 #define MWL8K_CAP_GREENFIELD 0x08000000
1879 #define MWL8K_CAP_AMPDU 0x04000000
1880 #define MWL8K_CAP_RX_STBC 0x01000000
1881 #define MWL8K_CAP_TX_STBC 0x00800000
1882 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
1883 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
1884 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
1885 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
1886 #define MWL8K_CAP_DELAY_BA 0x00003000
1887 #define MWL8K_CAP_MIMO 0x00000200
1888 #define MWL8K_CAP_40MHZ 0x00000100
1889 #define MWL8K_CAP_BAND_MASK 0x00000007
1890 #define MWL8K_CAP_5GHZ 0x00000004
1891 #define MWL8K_CAP_2GHZ4 0x00000001
1892
1893 static void
1894 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1895 struct ieee80211_supported_band *band, u32 cap)
1896 {
1897 int rx_streams;
1898 int tx_streams;
1899
1900 band->ht_cap.ht_supported = 1;
1901
1902 if (cap & MWL8K_CAP_MAX_AMSDU)
1903 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1904 if (cap & MWL8K_CAP_GREENFIELD)
1905 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1906 if (cap & MWL8K_CAP_AMPDU) {
1907 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1908 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1909 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1910 }
1911 if (cap & MWL8K_CAP_RX_STBC)
1912 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1913 if (cap & MWL8K_CAP_TX_STBC)
1914 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1915 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1916 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1917 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1918 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1919 if (cap & MWL8K_CAP_DELAY_BA)
1920 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1921 if (cap & MWL8K_CAP_40MHZ)
1922 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1923
1924 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1925 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1926
1927 band->ht_cap.mcs.rx_mask[0] = 0xff;
1928 if (rx_streams >= 2)
1929 band->ht_cap.mcs.rx_mask[1] = 0xff;
1930 if (rx_streams >= 3)
1931 band->ht_cap.mcs.rx_mask[2] = 0xff;
1932 band->ht_cap.mcs.rx_mask[4] = 0x01;
1933 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1934
1935 if (rx_streams != tx_streams) {
1936 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1937 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1938 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1939 }
1940 }
1941
1942 static void
1943 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1944 {
1945 struct mwl8k_priv *priv = hw->priv;
1946
1947 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1948 mwl8k_setup_2ghz_band(hw);
1949 if (caps & MWL8K_CAP_MIMO)
1950 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1951 }
1952
1953 if (caps & MWL8K_CAP_5GHZ) {
1954 mwl8k_setup_5ghz_band(hw);
1955 if (caps & MWL8K_CAP_MIMO)
1956 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1957 }
1958 }
1959
1960 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1961 {
1962 struct mwl8k_priv *priv = hw->priv;
1963 struct mwl8k_cmd_get_hw_spec_sta *cmd;
1964 int rc;
1965 int i;
1966
1967 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1968 if (cmd == NULL)
1969 return -ENOMEM;
1970
1971 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1972 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1973
1974 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1975 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1976 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1977 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1978 for (i = 0; i < MWL8K_TX_QUEUES; i++)
1979 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1980 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1981 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1982
1983 rc = mwl8k_post_cmd(hw, &cmd->header);
1984
1985 if (!rc) {
1986 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1987 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1988 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1989 priv->hw_rev = cmd->hw_rev;
1990 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1991 priv->ap_macids_supported = 0x00000000;
1992 priv->sta_macids_supported = 0x00000001;
1993 }
1994
1995 kfree(cmd);
1996 return rc;
1997 }
1998
1999 /*
2000 * CMD_GET_HW_SPEC (AP version).
2001 */
2002 struct mwl8k_cmd_get_hw_spec_ap {
2003 struct mwl8k_cmd_pkt header;
2004 __u8 hw_rev;
2005 __u8 host_interface;
2006 __le16 num_wcb;
2007 __le16 num_mcaddrs;
2008 __u8 perm_addr[ETH_ALEN];
2009 __le16 region_code;
2010 __le16 num_antenna;
2011 __le32 fw_rev;
2012 __le32 wcbbase0;
2013 __le32 rxwrptr;
2014 __le32 rxrdptr;
2015 __le32 ps_cookie;
2016 __le32 wcbbase1;
2017 __le32 wcbbase2;
2018 __le32 wcbbase3;
2019 __le32 fw_api_version;
2020 } __packed;
2021
2022 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2023 {
2024 struct mwl8k_priv *priv = hw->priv;
2025 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2026 int rc;
2027 u32 api_version;
2028
2029 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2030 if (cmd == NULL)
2031 return -ENOMEM;
2032
2033 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2034 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2035
2036 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2037 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2038
2039 rc = mwl8k_post_cmd(hw, &cmd->header);
2040
2041 if (!rc) {
2042 int off;
2043
2044 api_version = le32_to_cpu(cmd->fw_api_version);
2045 if (priv->device_info->fw_api_ap != api_version) {
2046 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2047 " Expected %d got %d.\n", MWL8K_NAME,
2048 priv->device_info->part_name,
2049 priv->device_info->fw_api_ap,
2050 api_version);
2051 rc = -EINVAL;
2052 goto done;
2053 }
2054 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2055 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2056 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2057 priv->hw_rev = cmd->hw_rev;
2058 mwl8k_setup_2ghz_band(hw);
2059 priv->ap_macids_supported = 0x000000ff;
2060 priv->sta_macids_supported = 0x00000000;
2061
2062 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2063 iowrite32(priv->txq[0].txd_dma, priv->sram + off);
2064
2065 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2066 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2067
2068 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2069 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2070
2071 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2072 iowrite32(priv->txq[1].txd_dma, priv->sram + off);
2073
2074 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2075 iowrite32(priv->txq[2].txd_dma, priv->sram + off);
2076
2077 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2078 iowrite32(priv->txq[3].txd_dma, priv->sram + off);
2079 }
2080
2081 done:
2082 kfree(cmd);
2083 return rc;
2084 }
2085
2086 /*
2087 * CMD_SET_HW_SPEC.
2088 */
2089 struct mwl8k_cmd_set_hw_spec {
2090 struct mwl8k_cmd_pkt header;
2091 __u8 hw_rev;
2092 __u8 host_interface;
2093 __le16 num_mcaddrs;
2094 __u8 perm_addr[ETH_ALEN];
2095 __le16 region_code;
2096 __le32 fw_rev;
2097 __le32 ps_cookie;
2098 __le32 caps;
2099 __le32 rx_queue_ptr;
2100 __le32 num_tx_queues;
2101 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
2102 __le32 flags;
2103 __le32 num_tx_desc_per_queue;
2104 __le32 total_rxd;
2105 } __packed;
2106
2107 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2108 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2109 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2110
2111 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2112 {
2113 struct mwl8k_priv *priv = hw->priv;
2114 struct mwl8k_cmd_set_hw_spec *cmd;
2115 int rc;
2116 int i;
2117
2118 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2119 if (cmd == NULL)
2120 return -ENOMEM;
2121
2122 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2123 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2124
2125 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2126 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2127 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
2128
2129 /*
2130 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2131 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2132 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2133 * priority is interpreted the right way in firmware.
2134 */
2135 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
2136 int j = MWL8K_TX_QUEUES - 1 - i;
2137 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2138 }
2139
2140 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2141 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2142 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2143 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2144 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2145
2146 rc = mwl8k_post_cmd(hw, &cmd->header);
2147 kfree(cmd);
2148
2149 return rc;
2150 }
2151
2152 /*
2153 * CMD_MAC_MULTICAST_ADR.
2154 */
2155 struct mwl8k_cmd_mac_multicast_adr {
2156 struct mwl8k_cmd_pkt header;
2157 __le16 action;
2158 __le16 numaddr;
2159 __u8 addr[0][ETH_ALEN];
2160 };
2161
2162 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2163 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2164 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2165 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2166
2167 static struct mwl8k_cmd_pkt *
2168 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2169 struct netdev_hw_addr_list *mc_list)
2170 {
2171 struct mwl8k_priv *priv = hw->priv;
2172 struct mwl8k_cmd_mac_multicast_adr *cmd;
2173 int size;
2174 int mc_count = 0;
2175
2176 if (mc_list)
2177 mc_count = netdev_hw_addr_list_count(mc_list);
2178
2179 if (allmulti || mc_count > priv->num_mcaddrs) {
2180 allmulti = 1;
2181 mc_count = 0;
2182 }
2183
2184 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2185
2186 cmd = kzalloc(size, GFP_ATOMIC);
2187 if (cmd == NULL)
2188 return NULL;
2189
2190 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2191 cmd->header.length = cpu_to_le16(size);
2192 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2193 MWL8K_ENABLE_RX_BROADCAST);
2194
2195 if (allmulti) {
2196 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2197 } else if (mc_count) {
2198 struct netdev_hw_addr *ha;
2199 int i = 0;
2200
2201 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2202 cmd->numaddr = cpu_to_le16(mc_count);
2203 netdev_hw_addr_list_for_each(ha, mc_list) {
2204 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2205 }
2206 }
2207
2208 return &cmd->header;
2209 }
2210
2211 /*
2212 * CMD_GET_STAT.
2213 */
2214 struct mwl8k_cmd_get_stat {
2215 struct mwl8k_cmd_pkt header;
2216 __le32 stats[64];
2217 } __packed;
2218
2219 #define MWL8K_STAT_ACK_FAILURE 9
2220 #define MWL8K_STAT_RTS_FAILURE 12
2221 #define MWL8K_STAT_FCS_ERROR 24
2222 #define MWL8K_STAT_RTS_SUCCESS 11
2223
2224 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2225 struct ieee80211_low_level_stats *stats)
2226 {
2227 struct mwl8k_cmd_get_stat *cmd;
2228 int rc;
2229
2230 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2231 if (cmd == NULL)
2232 return -ENOMEM;
2233
2234 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2235 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2236
2237 rc = mwl8k_post_cmd(hw, &cmd->header);
2238 if (!rc) {
2239 stats->dot11ACKFailureCount =
2240 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2241 stats->dot11RTSFailureCount =
2242 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2243 stats->dot11FCSErrorCount =
2244 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2245 stats->dot11RTSSuccessCount =
2246 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2247 }
2248 kfree(cmd);
2249
2250 return rc;
2251 }
2252
2253 /*
2254 * CMD_RADIO_CONTROL.
2255 */
2256 struct mwl8k_cmd_radio_control {
2257 struct mwl8k_cmd_pkt header;
2258 __le16 action;
2259 __le16 control;
2260 __le16 radio_on;
2261 } __packed;
2262
2263 static int
2264 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2265 {
2266 struct mwl8k_priv *priv = hw->priv;
2267 struct mwl8k_cmd_radio_control *cmd;
2268 int rc;
2269
2270 if (enable == priv->radio_on && !force)
2271 return 0;
2272
2273 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2274 if (cmd == NULL)
2275 return -ENOMEM;
2276
2277 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2278 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2279 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2280 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2281 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2282
2283 rc = mwl8k_post_cmd(hw, &cmd->header);
2284 kfree(cmd);
2285
2286 if (!rc)
2287 priv->radio_on = enable;
2288
2289 return rc;
2290 }
2291
2292 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2293 {
2294 return mwl8k_cmd_radio_control(hw, 0, 0);
2295 }
2296
2297 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2298 {
2299 return mwl8k_cmd_radio_control(hw, 1, 0);
2300 }
2301
2302 static int
2303 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2304 {
2305 struct mwl8k_priv *priv = hw->priv;
2306
2307 priv->radio_short_preamble = short_preamble;
2308
2309 return mwl8k_cmd_radio_control(hw, 1, 1);
2310 }
2311
2312 /*
2313 * CMD_RF_TX_POWER.
2314 */
2315 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2316
2317 struct mwl8k_cmd_rf_tx_power {
2318 struct mwl8k_cmd_pkt header;
2319 __le16 action;
2320 __le16 support_level;
2321 __le16 current_level;
2322 __le16 reserved;
2323 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2324 } __packed;
2325
2326 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2327 {
2328 struct mwl8k_cmd_rf_tx_power *cmd;
2329 int rc;
2330
2331 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2332 if (cmd == NULL)
2333 return -ENOMEM;
2334
2335 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2336 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2337 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2338 cmd->support_level = cpu_to_le16(dBm);
2339
2340 rc = mwl8k_post_cmd(hw, &cmd->header);
2341 kfree(cmd);
2342
2343 return rc;
2344 }
2345
2346 /*
2347 * CMD_TX_POWER.
2348 */
2349 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2350
2351 struct mwl8k_cmd_tx_power {
2352 struct mwl8k_cmd_pkt header;
2353 __le16 action;
2354 __le16 band;
2355 __le16 channel;
2356 __le16 bw;
2357 __le16 sub_ch;
2358 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2359 } __attribute__((packed));
2360
2361 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2362 struct ieee80211_conf *conf,
2363 unsigned short pwr)
2364 {
2365 struct ieee80211_channel *channel = conf->channel;
2366 struct mwl8k_cmd_tx_power *cmd;
2367 int rc;
2368 int i;
2369
2370 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2371 if (cmd == NULL)
2372 return -ENOMEM;
2373
2374 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2375 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2376 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2377
2378 if (channel->band == IEEE80211_BAND_2GHZ)
2379 cmd->band = cpu_to_le16(0x1);
2380 else if (channel->band == IEEE80211_BAND_5GHZ)
2381 cmd->band = cpu_to_le16(0x4);
2382
2383 cmd->channel = channel->hw_value;
2384
2385 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2386 conf->channel_type == NL80211_CHAN_HT20) {
2387 cmd->bw = cpu_to_le16(0x2);
2388 } else {
2389 cmd->bw = cpu_to_le16(0x4);
2390 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2391 cmd->sub_ch = cpu_to_le16(0x3);
2392 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2393 cmd->sub_ch = cpu_to_le16(0x1);
2394 }
2395
2396 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2397 cmd->power_level_list[i] = cpu_to_le16(pwr);
2398
2399 rc = mwl8k_post_cmd(hw, &cmd->header);
2400 kfree(cmd);
2401
2402 return rc;
2403 }
2404
2405 /*
2406 * CMD_RF_ANTENNA.
2407 */
2408 struct mwl8k_cmd_rf_antenna {
2409 struct mwl8k_cmd_pkt header;
2410 __le16 antenna;
2411 __le16 mode;
2412 } __packed;
2413
2414 #define MWL8K_RF_ANTENNA_RX 1
2415 #define MWL8K_RF_ANTENNA_TX 2
2416
2417 static int
2418 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2419 {
2420 struct mwl8k_cmd_rf_antenna *cmd;
2421 int rc;
2422
2423 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2424 if (cmd == NULL)
2425 return -ENOMEM;
2426
2427 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2428 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2429 cmd->antenna = cpu_to_le16(antenna);
2430 cmd->mode = cpu_to_le16(mask);
2431
2432 rc = mwl8k_post_cmd(hw, &cmd->header);
2433 kfree(cmd);
2434
2435 return rc;
2436 }
2437
2438 /*
2439 * CMD_SET_BEACON.
2440 */
2441 struct mwl8k_cmd_set_beacon {
2442 struct mwl8k_cmd_pkt header;
2443 __le16 beacon_len;
2444 __u8 beacon[0];
2445 };
2446
2447 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2448 struct ieee80211_vif *vif, u8 *beacon, int len)
2449 {
2450 struct mwl8k_cmd_set_beacon *cmd;
2451 int rc;
2452
2453 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2454 if (cmd == NULL)
2455 return -ENOMEM;
2456
2457 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2458 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2459 cmd->beacon_len = cpu_to_le16(len);
2460 memcpy(cmd->beacon, beacon, len);
2461
2462 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2463 kfree(cmd);
2464
2465 return rc;
2466 }
2467
2468 /*
2469 * CMD_SET_PRE_SCAN.
2470 */
2471 struct mwl8k_cmd_set_pre_scan {
2472 struct mwl8k_cmd_pkt header;
2473 } __packed;
2474
2475 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2476 {
2477 struct mwl8k_cmd_set_pre_scan *cmd;
2478 int rc;
2479
2480 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2481 if (cmd == NULL)
2482 return -ENOMEM;
2483
2484 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2485 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2486
2487 rc = mwl8k_post_cmd(hw, &cmd->header);
2488 kfree(cmd);
2489
2490 return rc;
2491 }
2492
2493 /*
2494 * CMD_SET_POST_SCAN.
2495 */
2496 struct mwl8k_cmd_set_post_scan {
2497 struct mwl8k_cmd_pkt header;
2498 __le32 isibss;
2499 __u8 bssid[ETH_ALEN];
2500 } __packed;
2501
2502 static int
2503 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2504 {
2505 struct mwl8k_cmd_set_post_scan *cmd;
2506 int rc;
2507
2508 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2509 if (cmd == NULL)
2510 return -ENOMEM;
2511
2512 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2513 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2514 cmd->isibss = 0;
2515 memcpy(cmd->bssid, mac, ETH_ALEN);
2516
2517 rc = mwl8k_post_cmd(hw, &cmd->header);
2518 kfree(cmd);
2519
2520 return rc;
2521 }
2522
2523 /*
2524 * CMD_SET_RF_CHANNEL.
2525 */
2526 struct mwl8k_cmd_set_rf_channel {
2527 struct mwl8k_cmd_pkt header;
2528 __le16 action;
2529 __u8 current_channel;
2530 __le32 channel_flags;
2531 } __packed;
2532
2533 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2534 struct ieee80211_conf *conf)
2535 {
2536 struct ieee80211_channel *channel = conf->channel;
2537 struct mwl8k_cmd_set_rf_channel *cmd;
2538 int rc;
2539
2540 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2541 if (cmd == NULL)
2542 return -ENOMEM;
2543
2544 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2545 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2546 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2547 cmd->current_channel = channel->hw_value;
2548
2549 if (channel->band == IEEE80211_BAND_2GHZ)
2550 cmd->channel_flags |= cpu_to_le32(0x00000001);
2551 else if (channel->band == IEEE80211_BAND_5GHZ)
2552 cmd->channel_flags |= cpu_to_le32(0x00000004);
2553
2554 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2555 conf->channel_type == NL80211_CHAN_HT20)
2556 cmd->channel_flags |= cpu_to_le32(0x00000080);
2557 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2558 cmd->channel_flags |= cpu_to_le32(0x000001900);
2559 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2560 cmd->channel_flags |= cpu_to_le32(0x000000900);
2561
2562 rc = mwl8k_post_cmd(hw, &cmd->header);
2563 kfree(cmd);
2564
2565 return rc;
2566 }
2567
2568 /*
2569 * CMD_SET_AID.
2570 */
2571 #define MWL8K_FRAME_PROT_DISABLED 0x00
2572 #define MWL8K_FRAME_PROT_11G 0x07
2573 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2574 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2575
2576 struct mwl8k_cmd_update_set_aid {
2577 struct mwl8k_cmd_pkt header;
2578 __le16 aid;
2579
2580 /* AP's MAC address (BSSID) */
2581 __u8 bssid[ETH_ALEN];
2582 __le16 protection_mode;
2583 __u8 supp_rates[14];
2584 } __packed;
2585
2586 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2587 {
2588 int i;
2589 int j;
2590
2591 /*
2592 * Clear nonstandard rates 4 and 13.
2593 */
2594 mask &= 0x1fef;
2595
2596 for (i = 0, j = 0; i < 14; i++) {
2597 if (mask & (1 << i))
2598 rates[j++] = mwl8k_rates_24[i].hw_value;
2599 }
2600 }
2601
2602 static int
2603 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2604 struct ieee80211_vif *vif, u32 legacy_rate_mask)
2605 {
2606 struct mwl8k_cmd_update_set_aid *cmd;
2607 u16 prot_mode;
2608 int rc;
2609
2610 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2611 if (cmd == NULL)
2612 return -ENOMEM;
2613
2614 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2615 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2616 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2617 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2618
2619 if (vif->bss_conf.use_cts_prot) {
2620 prot_mode = MWL8K_FRAME_PROT_11G;
2621 } else {
2622 switch (vif->bss_conf.ht_operation_mode &
2623 IEEE80211_HT_OP_MODE_PROTECTION) {
2624 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2625 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2626 break;
2627 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2628 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2629 break;
2630 default:
2631 prot_mode = MWL8K_FRAME_PROT_DISABLED;
2632 break;
2633 }
2634 }
2635 cmd->protection_mode = cpu_to_le16(prot_mode);
2636
2637 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2638
2639 rc = mwl8k_post_cmd(hw, &cmd->header);
2640 kfree(cmd);
2641
2642 return rc;
2643 }
2644
2645 /*
2646 * CMD_SET_RATE.
2647 */
2648 struct mwl8k_cmd_set_rate {
2649 struct mwl8k_cmd_pkt header;
2650 __u8 legacy_rates[14];
2651
2652 /* Bitmap for supported MCS codes. */
2653 __u8 mcs_set[16];
2654 __u8 reserved[16];
2655 } __packed;
2656
2657 static int
2658 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2659 u32 legacy_rate_mask, u8 *mcs_rates)
2660 {
2661 struct mwl8k_cmd_set_rate *cmd;
2662 int rc;
2663
2664 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2665 if (cmd == NULL)
2666 return -ENOMEM;
2667
2668 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2669 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2670 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2671 memcpy(cmd->mcs_set, mcs_rates, 16);
2672
2673 rc = mwl8k_post_cmd(hw, &cmd->header);
2674 kfree(cmd);
2675
2676 return rc;
2677 }
2678
2679 /*
2680 * CMD_FINALIZE_JOIN.
2681 */
2682 #define MWL8K_FJ_BEACON_MAXLEN 128
2683
2684 struct mwl8k_cmd_finalize_join {
2685 struct mwl8k_cmd_pkt header;
2686 __le32 sleep_interval; /* Number of beacon periods to sleep */
2687 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2688 } __packed;
2689
2690 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2691 int framelen, int dtim)
2692 {
2693 struct mwl8k_cmd_finalize_join *cmd;
2694 struct ieee80211_mgmt *payload = frame;
2695 int payload_len;
2696 int rc;
2697
2698 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2699 if (cmd == NULL)
2700 return -ENOMEM;
2701
2702 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2703 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2704 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2705
2706 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2707 if (payload_len < 0)
2708 payload_len = 0;
2709 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2710 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2711
2712 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2713
2714 rc = mwl8k_post_cmd(hw, &cmd->header);
2715 kfree(cmd);
2716
2717 return rc;
2718 }
2719
2720 /*
2721 * CMD_SET_RTS_THRESHOLD.
2722 */
2723 struct mwl8k_cmd_set_rts_threshold {
2724 struct mwl8k_cmd_pkt header;
2725 __le16 action;
2726 __le16 threshold;
2727 } __packed;
2728
2729 static int
2730 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2731 {
2732 struct mwl8k_cmd_set_rts_threshold *cmd;
2733 int rc;
2734
2735 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2736 if (cmd == NULL)
2737 return -ENOMEM;
2738
2739 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2740 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2741 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2742 cmd->threshold = cpu_to_le16(rts_thresh);
2743
2744 rc = mwl8k_post_cmd(hw, &cmd->header);
2745 kfree(cmd);
2746
2747 return rc;
2748 }
2749
2750 /*
2751 * CMD_SET_SLOT.
2752 */
2753 struct mwl8k_cmd_set_slot {
2754 struct mwl8k_cmd_pkt header;
2755 __le16 action;
2756 __u8 short_slot;
2757 } __packed;
2758
2759 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2760 {
2761 struct mwl8k_cmd_set_slot *cmd;
2762 int rc;
2763
2764 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2765 if (cmd == NULL)
2766 return -ENOMEM;
2767
2768 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2769 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2770 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2771 cmd->short_slot = short_slot_time;
2772
2773 rc = mwl8k_post_cmd(hw, &cmd->header);
2774 kfree(cmd);
2775
2776 return rc;
2777 }
2778
2779 /*
2780 * CMD_SET_EDCA_PARAMS.
2781 */
2782 struct mwl8k_cmd_set_edca_params {
2783 struct mwl8k_cmd_pkt header;
2784
2785 /* See MWL8K_SET_EDCA_XXX below */
2786 __le16 action;
2787
2788 /* TX opportunity in units of 32 us */
2789 __le16 txop;
2790
2791 union {
2792 struct {
2793 /* Log exponent of max contention period: 0...15 */
2794 __le32 log_cw_max;
2795
2796 /* Log exponent of min contention period: 0...15 */
2797 __le32 log_cw_min;
2798
2799 /* Adaptive interframe spacing in units of 32us */
2800 __u8 aifs;
2801
2802 /* TX queue to configure */
2803 __u8 txq;
2804 } ap;
2805 struct {
2806 /* Log exponent of max contention period: 0...15 */
2807 __u8 log_cw_max;
2808
2809 /* Log exponent of min contention period: 0...15 */
2810 __u8 log_cw_min;
2811
2812 /* Adaptive interframe spacing in units of 32us */
2813 __u8 aifs;
2814
2815 /* TX queue to configure */
2816 __u8 txq;
2817 } sta;
2818 };
2819 } __packed;
2820
2821 #define MWL8K_SET_EDCA_CW 0x01
2822 #define MWL8K_SET_EDCA_TXOP 0x02
2823 #define MWL8K_SET_EDCA_AIFS 0x04
2824
2825 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2826 MWL8K_SET_EDCA_TXOP | \
2827 MWL8K_SET_EDCA_AIFS)
2828
2829 static int
2830 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2831 __u16 cw_min, __u16 cw_max,
2832 __u8 aifs, __u16 txop)
2833 {
2834 struct mwl8k_priv *priv = hw->priv;
2835 struct mwl8k_cmd_set_edca_params *cmd;
2836 int rc;
2837
2838 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2839 if (cmd == NULL)
2840 return -ENOMEM;
2841
2842 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2843 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2844 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2845 cmd->txop = cpu_to_le16(txop);
2846 if (priv->ap_fw) {
2847 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2848 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2849 cmd->ap.aifs = aifs;
2850 cmd->ap.txq = qnum;
2851 } else {
2852 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2853 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2854 cmd->sta.aifs = aifs;
2855 cmd->sta.txq = qnum;
2856 }
2857
2858 rc = mwl8k_post_cmd(hw, &cmd->header);
2859 kfree(cmd);
2860
2861 return rc;
2862 }
2863
2864 /*
2865 * CMD_SET_WMM_MODE.
2866 */
2867 struct mwl8k_cmd_set_wmm_mode {
2868 struct mwl8k_cmd_pkt header;
2869 __le16 action;
2870 } __packed;
2871
2872 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2873 {
2874 struct mwl8k_priv *priv = hw->priv;
2875 struct mwl8k_cmd_set_wmm_mode *cmd;
2876 int rc;
2877
2878 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2879 if (cmd == NULL)
2880 return -ENOMEM;
2881
2882 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2883 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2884 cmd->action = cpu_to_le16(!!enable);
2885
2886 rc = mwl8k_post_cmd(hw, &cmd->header);
2887 kfree(cmd);
2888
2889 if (!rc)
2890 priv->wmm_enabled = enable;
2891
2892 return rc;
2893 }
2894
2895 /*
2896 * CMD_MIMO_CONFIG.
2897 */
2898 struct mwl8k_cmd_mimo_config {
2899 struct mwl8k_cmd_pkt header;
2900 __le32 action;
2901 __u8 rx_antenna_map;
2902 __u8 tx_antenna_map;
2903 } __packed;
2904
2905 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2906 {
2907 struct mwl8k_cmd_mimo_config *cmd;
2908 int rc;
2909
2910 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2911 if (cmd == NULL)
2912 return -ENOMEM;
2913
2914 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2915 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2916 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2917 cmd->rx_antenna_map = rx;
2918 cmd->tx_antenna_map = tx;
2919
2920 rc = mwl8k_post_cmd(hw, &cmd->header);
2921 kfree(cmd);
2922
2923 return rc;
2924 }
2925
2926 /*
2927 * CMD_USE_FIXED_RATE (STA version).
2928 */
2929 struct mwl8k_cmd_use_fixed_rate_sta {
2930 struct mwl8k_cmd_pkt header;
2931 __le32 action;
2932 __le32 allow_rate_drop;
2933 __le32 num_rates;
2934 struct {
2935 __le32 is_ht_rate;
2936 __le32 enable_retry;
2937 __le32 rate;
2938 __le32 retry_count;
2939 } rate_entry[8];
2940 __le32 rate_type;
2941 __le32 reserved1;
2942 __le32 reserved2;
2943 } __packed;
2944
2945 #define MWL8K_USE_AUTO_RATE 0x0002
2946 #define MWL8K_UCAST_RATE 0
2947
2948 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2949 {
2950 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2951 int rc;
2952
2953 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2954 if (cmd == NULL)
2955 return -ENOMEM;
2956
2957 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2958 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2959 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2960 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2961
2962 rc = mwl8k_post_cmd(hw, &cmd->header);
2963 kfree(cmd);
2964
2965 return rc;
2966 }
2967
2968 /*
2969 * CMD_USE_FIXED_RATE (AP version).
2970 */
2971 struct mwl8k_cmd_use_fixed_rate_ap {
2972 struct mwl8k_cmd_pkt header;
2973 __le32 action;
2974 __le32 allow_rate_drop;
2975 __le32 num_rates;
2976 struct mwl8k_rate_entry_ap {
2977 __le32 is_ht_rate;
2978 __le32 enable_retry;
2979 __le32 rate;
2980 __le32 retry_count;
2981 } rate_entry[4];
2982 u8 multicast_rate;
2983 u8 multicast_rate_type;
2984 u8 management_rate;
2985 } __packed;
2986
2987 static int
2988 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2989 {
2990 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2991 int rc;
2992
2993 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2994 if (cmd == NULL)
2995 return -ENOMEM;
2996
2997 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2998 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2999 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3000 cmd->multicast_rate = mcast;
3001 cmd->management_rate = mgmt;
3002
3003 rc = mwl8k_post_cmd(hw, &cmd->header);
3004 kfree(cmd);
3005
3006 return rc;
3007 }
3008
3009 /*
3010 * CMD_ENABLE_SNIFFER.
3011 */
3012 struct mwl8k_cmd_enable_sniffer {
3013 struct mwl8k_cmd_pkt header;
3014 __le32 action;
3015 } __packed;
3016
3017 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3018 {
3019 struct mwl8k_cmd_enable_sniffer *cmd;
3020 int rc;
3021
3022 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3023 if (cmd == NULL)
3024 return -ENOMEM;
3025
3026 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3027 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3028 cmd->action = cpu_to_le32(!!enable);
3029
3030 rc = mwl8k_post_cmd(hw, &cmd->header);
3031 kfree(cmd);
3032
3033 return rc;
3034 }
3035
3036 /*
3037 * CMD_SET_MAC_ADDR.
3038 */
3039 struct mwl8k_cmd_set_mac_addr {
3040 struct mwl8k_cmd_pkt header;
3041 union {
3042 struct {
3043 __le16 mac_type;
3044 __u8 mac_addr[ETH_ALEN];
3045 } mbss;
3046 __u8 mac_addr[ETH_ALEN];
3047 };
3048 } __packed;
3049
3050 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3051 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3052 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3053 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3054
3055 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3056 struct ieee80211_vif *vif, u8 *mac)
3057 {
3058 struct mwl8k_priv *priv = hw->priv;
3059 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3060 struct mwl8k_cmd_set_mac_addr *cmd;
3061 int mac_type;
3062 int rc;
3063
3064 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3065 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3066 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3067 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3068 else
3069 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3070 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3071 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3072 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3073 else
3074 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3075 }
3076
3077 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3078 if (cmd == NULL)
3079 return -ENOMEM;
3080
3081 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3082 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3083 if (priv->ap_fw) {
3084 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3085 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3086 } else {
3087 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3088 }
3089
3090 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3091 kfree(cmd);
3092
3093 return rc;
3094 }
3095
3096 /*
3097 * CMD_SET_RATEADAPT_MODE.
3098 */
3099 struct mwl8k_cmd_set_rate_adapt_mode {
3100 struct mwl8k_cmd_pkt header;
3101 __le16 action;
3102 __le16 mode;
3103 } __packed;
3104
3105 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3106 {
3107 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3108 int rc;
3109
3110 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3111 if (cmd == NULL)
3112 return -ENOMEM;
3113
3114 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3115 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3116 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3117 cmd->mode = cpu_to_le16(mode);
3118
3119 rc = mwl8k_post_cmd(hw, &cmd->header);
3120 kfree(cmd);
3121
3122 return rc;
3123 }
3124
3125 /*
3126 * CMD_BSS_START.
3127 */
3128 struct mwl8k_cmd_bss_start {
3129 struct mwl8k_cmd_pkt header;
3130 __le32 enable;
3131 } __packed;
3132
3133 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3134 struct ieee80211_vif *vif, int enable)
3135 {
3136 struct mwl8k_cmd_bss_start *cmd;
3137 int rc;
3138
3139 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3140 if (cmd == NULL)
3141 return -ENOMEM;
3142
3143 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3144 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3145 cmd->enable = cpu_to_le32(enable);
3146
3147 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3148 kfree(cmd);
3149
3150 return rc;
3151 }
3152
3153 /*
3154 * CMD_SET_NEW_STN.
3155 */
3156 struct mwl8k_cmd_set_new_stn {
3157 struct mwl8k_cmd_pkt header;
3158 __le16 aid;
3159 __u8 mac_addr[6];
3160 __le16 stn_id;
3161 __le16 action;
3162 __le16 rsvd;
3163 __le32 legacy_rates;
3164 __u8 ht_rates[4];
3165 __le16 cap_info;
3166 __le16 ht_capabilities_info;
3167 __u8 mac_ht_param_info;
3168 __u8 rev;
3169 __u8 control_channel;
3170 __u8 add_channel;
3171 __le16 op_mode;
3172 __le16 stbc;
3173 __u8 add_qos_info;
3174 __u8 is_qos_sta;
3175 __le32 fw_sta_ptr;
3176 } __packed;
3177
3178 #define MWL8K_STA_ACTION_ADD 0
3179 #define MWL8K_STA_ACTION_REMOVE 2
3180
3181 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3182 struct ieee80211_vif *vif,
3183 struct ieee80211_sta *sta)
3184 {
3185 struct mwl8k_cmd_set_new_stn *cmd;
3186 u32 rates;
3187 int rc;
3188
3189 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3190 if (cmd == NULL)
3191 return -ENOMEM;
3192
3193 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3194 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3195 cmd->aid = cpu_to_le16(sta->aid);
3196 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3197 cmd->stn_id = cpu_to_le16(sta->aid);
3198 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3199 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3200 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3201 else
3202 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3203 cmd->legacy_rates = cpu_to_le32(rates);
3204 if (sta->ht_cap.ht_supported) {
3205 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3206 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3207 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3208 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3209 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3210 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3211 ((sta->ht_cap.ampdu_density & 7) << 2);
3212 cmd->is_qos_sta = 1;
3213 }
3214
3215 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3216 kfree(cmd);
3217
3218 return rc;
3219 }
3220
3221 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3222 struct ieee80211_vif *vif)
3223 {
3224 struct mwl8k_cmd_set_new_stn *cmd;
3225 int rc;
3226
3227 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3228 if (cmd == NULL)
3229 return -ENOMEM;
3230
3231 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3232 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3233 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3234
3235 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3236 kfree(cmd);
3237
3238 return rc;
3239 }
3240
3241 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3242 struct ieee80211_vif *vif, u8 *addr)
3243 {
3244 struct mwl8k_cmd_set_new_stn *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_SET_NEW_STN);
3252 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3253 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3254 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3255
3256 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3257 kfree(cmd);
3258
3259 return rc;
3260 }
3261
3262 /*
3263 * CMD_UPDATE_ENCRYPTION.
3264 */
3265
3266 #define MAX_ENCR_KEY_LENGTH 16
3267 #define MIC_KEY_LENGTH 8
3268
3269 struct mwl8k_cmd_update_encryption {
3270 struct mwl8k_cmd_pkt header;
3271
3272 __le32 action;
3273 __le32 reserved;
3274 __u8 mac_addr[6];
3275 __u8 encr_type;
3276
3277 } __attribute__((packed));
3278
3279 struct mwl8k_cmd_set_key {
3280 struct mwl8k_cmd_pkt header;
3281
3282 __le32 action;
3283 __le32 reserved;
3284 __le16 length;
3285 __le16 key_type_id;
3286 __le32 key_info;
3287 __le32 key_id;
3288 __le16 key_len;
3289 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3290 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3291 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3292 __le16 tkip_rsc_low;
3293 __le32 tkip_rsc_high;
3294 __le16 tkip_tsc_low;
3295 __le32 tkip_tsc_high;
3296 __u8 mac_addr[6];
3297 } __attribute__((packed));
3298
3299 enum {
3300 MWL8K_ENCR_ENABLE,
3301 MWL8K_ENCR_SET_KEY,
3302 MWL8K_ENCR_REMOVE_KEY,
3303 MWL8K_ENCR_SET_GROUP_KEY,
3304 };
3305
3306 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3307 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3308 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3309 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3310 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3311
3312 enum {
3313 MWL8K_ALG_WEP,
3314 MWL8K_ALG_TKIP,
3315 MWL8K_ALG_CCMP,
3316 };
3317
3318 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3319 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3320 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3321 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3322 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3323
3324 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3325 struct ieee80211_vif *vif,
3326 u8 *addr,
3327 u8 encr_type)
3328 {
3329 struct mwl8k_cmd_update_encryption *cmd;
3330 int rc;
3331
3332 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3333 if (cmd == NULL)
3334 return -ENOMEM;
3335
3336 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3337 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3338 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3339 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3340 cmd->encr_type = encr_type;
3341
3342 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3343 kfree(cmd);
3344
3345 return rc;
3346 }
3347
3348 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3349 u8 *addr,
3350 struct ieee80211_key_conf *key)
3351 {
3352 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3353 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3354 cmd->length = cpu_to_le16(sizeof(*cmd) -
3355 offsetof(struct mwl8k_cmd_set_key, length));
3356 cmd->key_id = cpu_to_le32(key->keyidx);
3357 cmd->key_len = cpu_to_le16(key->keylen);
3358 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3359
3360 switch (key->cipher) {
3361 case WLAN_CIPHER_SUITE_WEP40:
3362 case WLAN_CIPHER_SUITE_WEP104:
3363 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3364 if (key->keyidx == 0)
3365 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3366
3367 break;
3368 case WLAN_CIPHER_SUITE_TKIP:
3369 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3370 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3371 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3372 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3373 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3374 | MWL8K_KEY_FLAG_TSC_VALID);
3375 break;
3376 case WLAN_CIPHER_SUITE_CCMP:
3377 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3378 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3379 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3380 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3381 break;
3382 default:
3383 return -ENOTSUPP;
3384 }
3385
3386 return 0;
3387 }
3388
3389 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3390 struct ieee80211_vif *vif,
3391 u8 *addr,
3392 struct ieee80211_key_conf *key)
3393 {
3394 struct mwl8k_cmd_set_key *cmd;
3395 int rc;
3396 int keymlen;
3397 u32 action;
3398 u8 idx;
3399 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3400
3401 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3402 if (cmd == NULL)
3403 return -ENOMEM;
3404
3405 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3406 if (rc < 0)
3407 goto done;
3408
3409 idx = key->keyidx;
3410
3411 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3412 action = MWL8K_ENCR_SET_KEY;
3413 else
3414 action = MWL8K_ENCR_SET_GROUP_KEY;
3415
3416 switch (key->cipher) {
3417 case WLAN_CIPHER_SUITE_WEP40:
3418 case WLAN_CIPHER_SUITE_WEP104:
3419 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3420 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3421 sizeof(*key) + key->keylen);
3422 mwl8k_vif->wep_key_conf[idx].enabled = 1;
3423 }
3424
3425 keymlen = 0;
3426 action = MWL8K_ENCR_SET_KEY;
3427 break;
3428 case WLAN_CIPHER_SUITE_TKIP:
3429 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3430 break;
3431 case WLAN_CIPHER_SUITE_CCMP:
3432 keymlen = key->keylen;
3433 break;
3434 default:
3435 rc = -ENOTSUPP;
3436 goto done;
3437 }
3438
3439 memcpy(cmd->key_material, key->key, keymlen);
3440 cmd->action = cpu_to_le32(action);
3441
3442 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3443 done:
3444 kfree(cmd);
3445
3446 return rc;
3447 }
3448
3449 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3450 struct ieee80211_vif *vif,
3451 u8 *addr,
3452 struct ieee80211_key_conf *key)
3453 {
3454 struct mwl8k_cmd_set_key *cmd;
3455 int rc;
3456 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3457
3458 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3459 if (cmd == NULL)
3460 return -ENOMEM;
3461
3462 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3463 if (rc < 0)
3464 goto done;
3465
3466 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3467 WLAN_CIPHER_SUITE_WEP104)
3468 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
3469
3470 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
3471
3472 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3473 done:
3474 kfree(cmd);
3475
3476 return rc;
3477 }
3478
3479 static int mwl8k_set_key(struct ieee80211_hw *hw,
3480 enum set_key_cmd cmd_param,
3481 struct ieee80211_vif *vif,
3482 struct ieee80211_sta *sta,
3483 struct ieee80211_key_conf *key)
3484 {
3485 int rc = 0;
3486 u8 encr_type;
3487 u8 *addr;
3488 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3489
3490 if (vif->type == NL80211_IFTYPE_STATION)
3491 return -EOPNOTSUPP;
3492
3493 if (sta == NULL)
3494 addr = hw->wiphy->perm_addr;
3495 else
3496 addr = sta->addr;
3497
3498 if (cmd_param == SET_KEY) {
3499 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3500 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
3501 if (rc)
3502 goto out;
3503
3504 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
3505 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
3506 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
3507 else
3508 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
3509
3510 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
3511 encr_type);
3512 if (rc)
3513 goto out;
3514
3515 mwl8k_vif->is_hw_crypto_enabled = true;
3516
3517 } else {
3518 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
3519
3520 if (rc)
3521 goto out;
3522
3523 mwl8k_vif->is_hw_crypto_enabled = false;
3524
3525 }
3526 out:
3527 return rc;
3528 }
3529
3530 /*
3531 * CMD_UPDATE_STADB.
3532 */
3533 struct ewc_ht_info {
3534 __le16 control1;
3535 __le16 control2;
3536 __le16 control3;
3537 } __packed;
3538
3539 struct peer_capability_info {
3540 /* Peer type - AP vs. STA. */
3541 __u8 peer_type;
3542
3543 /* Basic 802.11 capabilities from assoc resp. */
3544 __le16 basic_caps;
3545
3546 /* Set if peer supports 802.11n high throughput (HT). */
3547 __u8 ht_support;
3548
3549 /* Valid if HT is supported. */
3550 __le16 ht_caps;
3551 __u8 extended_ht_caps;
3552 struct ewc_ht_info ewc_info;
3553
3554 /* Legacy rate table. Intersection of our rates and peer rates. */
3555 __u8 legacy_rates[12];
3556
3557 /* HT rate table. Intersection of our rates and peer rates. */
3558 __u8 ht_rates[16];
3559 __u8 pad[16];
3560
3561 /* If set, interoperability mode, no proprietary extensions. */
3562 __u8 interop;
3563 __u8 pad2;
3564 __u8 station_id;
3565 __le16 amsdu_enabled;
3566 } __packed;
3567
3568 struct mwl8k_cmd_update_stadb {
3569 struct mwl8k_cmd_pkt header;
3570
3571 /* See STADB_ACTION_TYPE */
3572 __le32 action;
3573
3574 /* Peer MAC address */
3575 __u8 peer_addr[ETH_ALEN];
3576
3577 __le32 reserved;
3578
3579 /* Peer info - valid during add/update. */
3580 struct peer_capability_info peer_info;
3581 } __packed;
3582
3583 #define MWL8K_STA_DB_MODIFY_ENTRY 1
3584 #define MWL8K_STA_DB_DEL_ENTRY 2
3585
3586 /* Peer Entry flags - used to define the type of the peer node */
3587 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
3588
3589 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3590 struct ieee80211_vif *vif,
3591 struct ieee80211_sta *sta)
3592 {
3593 struct mwl8k_cmd_update_stadb *cmd;
3594 struct peer_capability_info *p;
3595 u32 rates;
3596 int rc;
3597
3598 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3599 if (cmd == NULL)
3600 return -ENOMEM;
3601
3602 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3603 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3604 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3605 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3606
3607 p = &cmd->peer_info;
3608 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3609 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3610 p->ht_support = sta->ht_cap.ht_supported;
3611 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
3612 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3613 ((sta->ht_cap.ampdu_density & 7) << 2);
3614 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3615 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3616 else
3617 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3618 legacy_rate_mask_to_array(p->legacy_rates, rates);
3619 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3620 p->interop = 1;
3621 p->amsdu_enabled = 0;
3622
3623 rc = mwl8k_post_cmd(hw, &cmd->header);
3624 kfree(cmd);
3625
3626 return rc ? rc : p->station_id;
3627 }
3628
3629 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3630 struct ieee80211_vif *vif, u8 *addr)
3631 {
3632 struct mwl8k_cmd_update_stadb *cmd;
3633 int rc;
3634
3635 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3636 if (cmd == NULL)
3637 return -ENOMEM;
3638
3639 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3640 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3641 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3642 memcpy(cmd->peer_addr, addr, ETH_ALEN);
3643
3644 rc = mwl8k_post_cmd(hw, &cmd->header);
3645 kfree(cmd);
3646
3647 return rc;
3648 }
3649
3650
3651 /*
3652 * Interrupt handling.
3653 */
3654 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3655 {
3656 struct ieee80211_hw *hw = dev_id;
3657 struct mwl8k_priv *priv = hw->priv;
3658 u32 status;
3659
3660 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3661 if (!status)
3662 return IRQ_NONE;
3663
3664 if (status & MWL8K_A2H_INT_TX_DONE) {
3665 status &= ~MWL8K_A2H_INT_TX_DONE;
3666 tasklet_schedule(&priv->poll_tx_task);
3667 }
3668
3669 if (status & MWL8K_A2H_INT_RX_READY) {
3670 status &= ~MWL8K_A2H_INT_RX_READY;
3671 tasklet_schedule(&priv->poll_rx_task);
3672 }
3673
3674 if (status)
3675 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3676
3677 if (status & MWL8K_A2H_INT_OPC_DONE) {
3678 if (priv->hostcmd_wait != NULL)
3679 complete(priv->hostcmd_wait);
3680 }
3681
3682 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3683 if (!mutex_is_locked(&priv->fw_mutex) &&
3684 priv->radio_on && priv->pending_tx_pkts)
3685 mwl8k_tx_start(priv);
3686 }
3687
3688 return IRQ_HANDLED;
3689 }
3690
3691 static void mwl8k_tx_poll(unsigned long data)
3692 {
3693 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3694 struct mwl8k_priv *priv = hw->priv;
3695 int limit;
3696 int i;
3697
3698 limit = 32;
3699
3700 spin_lock_bh(&priv->tx_lock);
3701
3702 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3703 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3704
3705 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3706 complete(priv->tx_wait);
3707 priv->tx_wait = NULL;
3708 }
3709
3710 spin_unlock_bh(&priv->tx_lock);
3711
3712 if (limit) {
3713 writel(~MWL8K_A2H_INT_TX_DONE,
3714 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3715 } else {
3716 tasklet_schedule(&priv->poll_tx_task);
3717 }
3718 }
3719
3720 static void mwl8k_rx_poll(unsigned long data)
3721 {
3722 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3723 struct mwl8k_priv *priv = hw->priv;
3724 int limit;
3725
3726 limit = 32;
3727 limit -= rxq_process(hw, 0, limit);
3728 limit -= rxq_refill(hw, 0, limit);
3729
3730 if (limit) {
3731 writel(~MWL8K_A2H_INT_RX_READY,
3732 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3733 } else {
3734 tasklet_schedule(&priv->poll_rx_task);
3735 }
3736 }
3737
3738
3739 /*
3740 * Core driver operations.
3741 */
3742 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3743 {
3744 struct mwl8k_priv *priv = hw->priv;
3745 int index = skb_get_queue_mapping(skb);
3746
3747 if (!priv->radio_on) {
3748 wiphy_debug(hw->wiphy,
3749 "dropped TX frame since radio disabled\n");
3750 dev_kfree_skb(skb);
3751 return;
3752 }
3753
3754 mwl8k_txq_xmit(hw, index, skb);
3755 }
3756
3757 static int mwl8k_start(struct ieee80211_hw *hw)
3758 {
3759 struct mwl8k_priv *priv = hw->priv;
3760 int rc;
3761
3762 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3763 IRQF_SHARED, MWL8K_NAME, hw);
3764 if (rc) {
3765 priv->irq = -1;
3766 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
3767 return -EIO;
3768 }
3769 priv->irq = priv->pdev->irq;
3770
3771 /* Enable TX reclaim and RX tasklets. */
3772 tasklet_enable(&priv->poll_tx_task);
3773 tasklet_enable(&priv->poll_rx_task);
3774
3775 /* Enable interrupts */
3776 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3777
3778 rc = mwl8k_fw_lock(hw);
3779 if (!rc) {
3780 rc = mwl8k_cmd_radio_enable(hw);
3781
3782 if (!priv->ap_fw) {
3783 if (!rc)
3784 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3785
3786 if (!rc)
3787 rc = mwl8k_cmd_set_pre_scan(hw);
3788
3789 if (!rc)
3790 rc = mwl8k_cmd_set_post_scan(hw,
3791 "\x00\x00\x00\x00\x00\x00");
3792 }
3793
3794 if (!rc)
3795 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3796
3797 if (!rc)
3798 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3799
3800 mwl8k_fw_unlock(hw);
3801 }
3802
3803 if (rc) {
3804 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3805 free_irq(priv->pdev->irq, hw);
3806 priv->irq = -1;
3807 tasklet_disable(&priv->poll_tx_task);
3808 tasklet_disable(&priv->poll_rx_task);
3809 }
3810
3811 return rc;
3812 }
3813
3814 static void mwl8k_stop(struct ieee80211_hw *hw)
3815 {
3816 struct mwl8k_priv *priv = hw->priv;
3817 int i;
3818
3819 mwl8k_cmd_radio_disable(hw);
3820
3821 ieee80211_stop_queues(hw);
3822
3823 /* Disable interrupts */
3824 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3825 if (priv->irq != -1) {
3826 free_irq(priv->pdev->irq, hw);
3827 priv->irq = -1;
3828 }
3829
3830 /* Stop finalize join worker */
3831 cancel_work_sync(&priv->finalize_join_worker);
3832 if (priv->beacon_skb != NULL)
3833 dev_kfree_skb(priv->beacon_skb);
3834
3835 /* Stop TX reclaim and RX tasklets. */
3836 tasklet_disable(&priv->poll_tx_task);
3837 tasklet_disable(&priv->poll_rx_task);
3838
3839 /* Return all skbs to mac80211 */
3840 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3841 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3842 }
3843
3844 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
3845
3846 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3847 struct ieee80211_vif *vif)
3848 {
3849 struct mwl8k_priv *priv = hw->priv;
3850 struct mwl8k_vif *mwl8k_vif;
3851 u32 macids_supported;
3852 int macid, rc;
3853 struct mwl8k_device_info *di;
3854
3855 /*
3856 * Reject interface creation if sniffer mode is active, as
3857 * STA operation is mutually exclusive with hardware sniffer
3858 * mode. (Sniffer mode is only used on STA firmware.)
3859 */
3860 if (priv->sniffer_enabled) {
3861 wiphy_info(hw->wiphy,
3862 "unable to create STA interface because sniffer mode is enabled\n");
3863 return -EINVAL;
3864 }
3865
3866 di = priv->device_info;
3867 switch (vif->type) {
3868 case NL80211_IFTYPE_AP:
3869 if (!priv->ap_fw && di->fw_image_ap) {
3870 /* we must load the ap fw to meet this request */
3871 if (!list_empty(&priv->vif_list))
3872 return -EBUSY;
3873 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
3874 if (rc)
3875 return rc;
3876 }
3877 macids_supported = priv->ap_macids_supported;
3878 break;
3879 case NL80211_IFTYPE_STATION:
3880 if (priv->ap_fw && di->fw_image_sta) {
3881 /* we must load the sta fw to meet this request */
3882 if (!list_empty(&priv->vif_list))
3883 return -EBUSY;
3884 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
3885 if (rc)
3886 return rc;
3887 }
3888 macids_supported = priv->sta_macids_supported;
3889 break;
3890 default:
3891 return -EINVAL;
3892 }
3893
3894 macid = ffs(macids_supported & ~priv->macids_used);
3895 if (!macid--)
3896 return -EBUSY;
3897
3898 /* Setup driver private area. */
3899 mwl8k_vif = MWL8K_VIF(vif);
3900 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3901 mwl8k_vif->vif = vif;
3902 mwl8k_vif->macid = macid;
3903 mwl8k_vif->seqno = 0;
3904 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
3905 mwl8k_vif->is_hw_crypto_enabled = false;
3906
3907 /* Set the mac address. */
3908 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3909
3910 if (priv->ap_fw)
3911 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3912
3913 priv->macids_used |= 1 << mwl8k_vif->macid;
3914 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3915
3916 return 0;
3917 }
3918
3919 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3920 struct ieee80211_vif *vif)
3921 {
3922 struct mwl8k_priv *priv = hw->priv;
3923 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3924
3925 if (priv->ap_fw)
3926 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3927
3928 mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3929
3930 priv->macids_used &= ~(1 << mwl8k_vif->macid);
3931 list_del(&mwl8k_vif->list);
3932 }
3933
3934 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3935 {
3936 struct ieee80211_conf *conf = &hw->conf;
3937 struct mwl8k_priv *priv = hw->priv;
3938 int rc;
3939
3940 if (conf->flags & IEEE80211_CONF_IDLE) {
3941 mwl8k_cmd_radio_disable(hw);
3942 return 0;
3943 }
3944
3945 rc = mwl8k_fw_lock(hw);
3946 if (rc)
3947 return rc;
3948
3949 rc = mwl8k_cmd_radio_enable(hw);
3950 if (rc)
3951 goto out;
3952
3953 rc = mwl8k_cmd_set_rf_channel(hw, conf);
3954 if (rc)
3955 goto out;
3956
3957 if (conf->power_level > 18)
3958 conf->power_level = 18;
3959
3960 if (priv->ap_fw) {
3961 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
3962 if (rc)
3963 goto out;
3964
3965 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
3966 if (rc)
3967 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
3968 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3969 if (rc)
3970 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
3971
3972 } else {
3973 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3974 if (rc)
3975 goto out;
3976 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3977 }
3978
3979 out:
3980 mwl8k_fw_unlock(hw);
3981
3982 return rc;
3983 }
3984
3985 static void
3986 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3987 struct ieee80211_bss_conf *info, u32 changed)
3988 {
3989 struct mwl8k_priv *priv = hw->priv;
3990 u32 ap_legacy_rates;
3991 u8 ap_mcs_rates[16];
3992 int rc;
3993
3994 if (mwl8k_fw_lock(hw))
3995 return;
3996
3997 /*
3998 * No need to capture a beacon if we're no longer associated.
3999 */
4000 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4001 priv->capture_beacon = false;
4002
4003 /*
4004 * Get the AP's legacy and MCS rates.
4005 */
4006 if (vif->bss_conf.assoc) {
4007 struct ieee80211_sta *ap;
4008
4009 rcu_read_lock();
4010
4011 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4012 if (ap == NULL) {
4013 rcu_read_unlock();
4014 goto out;
4015 }
4016
4017 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4018 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4019 } else {
4020 ap_legacy_rates =
4021 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4022 }
4023 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4024
4025 rcu_read_unlock();
4026 }
4027
4028 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4029 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4030 if (rc)
4031 goto out;
4032
4033 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4034 if (rc)
4035 goto out;
4036 }
4037
4038 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4039 rc = mwl8k_set_radio_preamble(hw,
4040 vif->bss_conf.use_short_preamble);
4041 if (rc)
4042 goto out;
4043 }
4044
4045 if (changed & BSS_CHANGED_ERP_SLOT) {
4046 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4047 if (rc)
4048 goto out;
4049 }
4050
4051 if (vif->bss_conf.assoc &&
4052 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4053 BSS_CHANGED_HT))) {
4054 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4055 if (rc)
4056 goto out;
4057 }
4058
4059 if (vif->bss_conf.assoc &&
4060 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4061 /*
4062 * Finalize the join. Tell rx handler to process
4063 * next beacon from our BSSID.
4064 */
4065 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4066 priv->capture_beacon = true;
4067 }
4068
4069 out:
4070 mwl8k_fw_unlock(hw);
4071 }
4072
4073 static void
4074 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4075 struct ieee80211_bss_conf *info, u32 changed)
4076 {
4077 int rc;
4078
4079 if (mwl8k_fw_lock(hw))
4080 return;
4081
4082 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4083 rc = mwl8k_set_radio_preamble(hw,
4084 vif->bss_conf.use_short_preamble);
4085 if (rc)
4086 goto out;
4087 }
4088
4089 if (changed & BSS_CHANGED_BASIC_RATES) {
4090 int idx;
4091 int rate;
4092
4093 /*
4094 * Use lowest supported basic rate for multicasts
4095 * and management frames (such as probe responses --
4096 * beacons will always go out at 1 Mb/s).
4097 */
4098 idx = ffs(vif->bss_conf.basic_rates);
4099 if (idx)
4100 idx--;
4101
4102 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4103 rate = mwl8k_rates_24[idx].hw_value;
4104 else
4105 rate = mwl8k_rates_50[idx].hw_value;
4106
4107 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4108 }
4109
4110 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4111 struct sk_buff *skb;
4112
4113 skb = ieee80211_beacon_get(hw, vif);
4114 if (skb != NULL) {
4115 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4116 kfree_skb(skb);
4117 }
4118 }
4119
4120 if (changed & BSS_CHANGED_BEACON_ENABLED)
4121 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4122
4123 out:
4124 mwl8k_fw_unlock(hw);
4125 }
4126
4127 static void
4128 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4129 struct ieee80211_bss_conf *info, u32 changed)
4130 {
4131 struct mwl8k_priv *priv = hw->priv;
4132
4133 if (!priv->ap_fw)
4134 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4135 else
4136 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4137 }
4138
4139 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4140 struct netdev_hw_addr_list *mc_list)
4141 {
4142 struct mwl8k_cmd_pkt *cmd;
4143
4144 /*
4145 * Synthesize and return a command packet that programs the
4146 * hardware multicast address filter. At this point we don't
4147 * know whether FIF_ALLMULTI is being requested, but if it is,
4148 * we'll end up throwing this packet away and creating a new
4149 * one in mwl8k_configure_filter().
4150 */
4151 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4152
4153 return (unsigned long)cmd;
4154 }
4155
4156 static int
4157 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4158 unsigned int changed_flags,
4159 unsigned int *total_flags)
4160 {
4161 struct mwl8k_priv *priv = hw->priv;
4162
4163 /*
4164 * Hardware sniffer mode is mutually exclusive with STA
4165 * operation, so refuse to enable sniffer mode if a STA
4166 * interface is active.
4167 */
4168 if (!list_empty(&priv->vif_list)) {
4169 if (net_ratelimit())
4170 wiphy_info(hw->wiphy,
4171 "not enabling sniffer mode because STA interface is active\n");
4172 return 0;
4173 }
4174
4175 if (!priv->sniffer_enabled) {
4176 if (mwl8k_cmd_enable_sniffer(hw, 1))
4177 return 0;
4178 priv->sniffer_enabled = true;
4179 }
4180
4181 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4182 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4183 FIF_OTHER_BSS;
4184
4185 return 1;
4186 }
4187
4188 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4189 {
4190 if (!list_empty(&priv->vif_list))
4191 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4192
4193 return NULL;
4194 }
4195
4196 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4197 unsigned int changed_flags,
4198 unsigned int *total_flags,
4199 u64 multicast)
4200 {
4201 struct mwl8k_priv *priv = hw->priv;
4202 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4203
4204 /*
4205 * AP firmware doesn't allow fine-grained control over
4206 * the receive filter.
4207 */
4208 if (priv->ap_fw) {
4209 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4210 kfree(cmd);
4211 return;
4212 }
4213
4214 /*
4215 * Enable hardware sniffer mode if FIF_CONTROL or
4216 * FIF_OTHER_BSS is requested.
4217 */
4218 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4219 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4220 kfree(cmd);
4221 return;
4222 }
4223
4224 /* Clear unsupported feature flags */
4225 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4226
4227 if (mwl8k_fw_lock(hw)) {
4228 kfree(cmd);
4229 return;
4230 }
4231
4232 if (priv->sniffer_enabled) {
4233 mwl8k_cmd_enable_sniffer(hw, 0);
4234 priv->sniffer_enabled = false;
4235 }
4236
4237 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4238 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4239 /*
4240 * Disable the BSS filter.
4241 */
4242 mwl8k_cmd_set_pre_scan(hw);
4243 } else {
4244 struct mwl8k_vif *mwl8k_vif;
4245 const u8 *bssid;
4246
4247 /*
4248 * Enable the BSS filter.
4249 *
4250 * If there is an active STA interface, use that
4251 * interface's BSSID, otherwise use a dummy one
4252 * (where the OUI part needs to be nonzero for
4253 * the BSSID to be accepted by POST_SCAN).
4254 */
4255 mwl8k_vif = mwl8k_first_vif(priv);
4256 if (mwl8k_vif != NULL)
4257 bssid = mwl8k_vif->vif->bss_conf.bssid;
4258 else
4259 bssid = "\x01\x00\x00\x00\x00\x00";
4260
4261 mwl8k_cmd_set_post_scan(hw, bssid);
4262 }
4263 }
4264
4265 /*
4266 * If FIF_ALLMULTI is being requested, throw away the command
4267 * packet that ->prepare_multicast() built and replace it with
4268 * a command packet that enables reception of all multicast
4269 * packets.
4270 */
4271 if (*total_flags & FIF_ALLMULTI) {
4272 kfree(cmd);
4273 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4274 }
4275
4276 if (cmd != NULL) {
4277 mwl8k_post_cmd(hw, cmd);
4278 kfree(cmd);
4279 }
4280
4281 mwl8k_fw_unlock(hw);
4282 }
4283
4284 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4285 {
4286 return mwl8k_cmd_set_rts_threshold(hw, value);
4287 }
4288
4289 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4290 struct ieee80211_vif *vif,
4291 struct ieee80211_sta *sta)
4292 {
4293 struct mwl8k_priv *priv = hw->priv;
4294
4295 if (priv->ap_fw)
4296 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4297 else
4298 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4299 }
4300
4301 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4302 struct ieee80211_vif *vif,
4303 struct ieee80211_sta *sta)
4304 {
4305 struct mwl8k_priv *priv = hw->priv;
4306 int ret;
4307 int i;
4308 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4309 struct ieee80211_key_conf *key;
4310
4311 if (!priv->ap_fw) {
4312 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4313 if (ret >= 0) {
4314 MWL8K_STA(sta)->peer_id = ret;
4315 ret = 0;
4316 }
4317
4318 } else {
4319 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4320 }
4321
4322 for (i = 0; i < NUM_WEP_KEYS; i++) {
4323 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4324 if (mwl8k_vif->wep_key_conf[i].enabled)
4325 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4326 }
4327 return ret;
4328 }
4329
4330 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4331 const struct ieee80211_tx_queue_params *params)
4332 {
4333 struct mwl8k_priv *priv = hw->priv;
4334 int rc;
4335
4336 rc = mwl8k_fw_lock(hw);
4337 if (!rc) {
4338 BUG_ON(queue > MWL8K_TX_QUEUES - 1);
4339 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4340
4341 if (!priv->wmm_enabled)
4342 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4343
4344 if (!rc) {
4345 int q = MWL8K_TX_QUEUES - 1 - queue;
4346 rc = mwl8k_cmd_set_edca_params(hw, q,
4347 params->cw_min,
4348 params->cw_max,
4349 params->aifs,
4350 params->txop);
4351 }
4352
4353 mwl8k_fw_unlock(hw);
4354 }
4355
4356 return rc;
4357 }
4358
4359 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4360 struct ieee80211_low_level_stats *stats)
4361 {
4362 return mwl8k_cmd_get_stat(hw, stats);
4363 }
4364
4365 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4366 struct survey_info *survey)
4367 {
4368 struct mwl8k_priv *priv = hw->priv;
4369 struct ieee80211_conf *conf = &hw->conf;
4370
4371 if (idx != 0)
4372 return -ENOENT;
4373
4374 survey->channel = conf->channel;
4375 survey->filled = SURVEY_INFO_NOISE_DBM;
4376 survey->noise = priv->noise;
4377
4378 return 0;
4379 }
4380
4381 static int
4382 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4383 enum ieee80211_ampdu_mlme_action action,
4384 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4385 u8 buf_size)
4386 {
4387 switch (action) {
4388 case IEEE80211_AMPDU_RX_START:
4389 case IEEE80211_AMPDU_RX_STOP:
4390 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4391 return -ENOTSUPP;
4392 return 0;
4393 default:
4394 return -ENOTSUPP;
4395 }
4396 }
4397
4398 static const struct ieee80211_ops mwl8k_ops = {
4399 .tx = mwl8k_tx,
4400 .start = mwl8k_start,
4401 .stop = mwl8k_stop,
4402 .add_interface = mwl8k_add_interface,
4403 .remove_interface = mwl8k_remove_interface,
4404 .config = mwl8k_config,
4405 .bss_info_changed = mwl8k_bss_info_changed,
4406 .prepare_multicast = mwl8k_prepare_multicast,
4407 .configure_filter = mwl8k_configure_filter,
4408 .set_key = mwl8k_set_key,
4409 .set_rts_threshold = mwl8k_set_rts_threshold,
4410 .sta_add = mwl8k_sta_add,
4411 .sta_remove = mwl8k_sta_remove,
4412 .conf_tx = mwl8k_conf_tx,
4413 .get_stats = mwl8k_get_stats,
4414 .get_survey = mwl8k_get_survey,
4415 .ampdu_action = mwl8k_ampdu_action,
4416 };
4417
4418 static void mwl8k_finalize_join_worker(struct work_struct *work)
4419 {
4420 struct mwl8k_priv *priv =
4421 container_of(work, struct mwl8k_priv, finalize_join_worker);
4422 struct sk_buff *skb = priv->beacon_skb;
4423 struct ieee80211_mgmt *mgmt = (void *)skb->data;
4424 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
4425 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
4426 mgmt->u.beacon.variable, len);
4427 int dtim_period = 1;
4428
4429 if (tim && tim[1] >= 2)
4430 dtim_period = tim[3];
4431
4432 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
4433
4434 dev_kfree_skb(skb);
4435 priv->beacon_skb = NULL;
4436 }
4437
4438 enum {
4439 MWL8363 = 0,
4440 MWL8687,
4441 MWL8366,
4442 };
4443
4444 #define MWL8K_8366_AP_FW_API 1
4445 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
4446 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
4447
4448 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
4449 [MWL8363] = {
4450 .part_name = "88w8363",
4451 .helper_image = "mwl8k/helper_8363.fw",
4452 .fw_image_sta = "mwl8k/fmimage_8363.fw",
4453 },
4454 [MWL8687] = {
4455 .part_name = "88w8687",
4456 .helper_image = "mwl8k/helper_8687.fw",
4457 .fw_image_sta = "mwl8k/fmimage_8687.fw",
4458 },
4459 [MWL8366] = {
4460 .part_name = "88w8366",
4461 .helper_image = "mwl8k/helper_8366.fw",
4462 .fw_image_sta = "mwl8k/fmimage_8366.fw",
4463 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
4464 .fw_api_ap = MWL8K_8366_AP_FW_API,
4465 .ap_rxd_ops = &rxd_8366_ap_ops,
4466 },
4467 };
4468
4469 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
4470 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
4471 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
4472 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
4473 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
4474 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
4475 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
4476
4477 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
4478 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
4479 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
4480 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
4481 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
4482 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
4483 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
4484 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
4485 { },
4486 };
4487 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
4488
4489 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
4490 {
4491 int rc;
4492 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
4493 "Trying alternative firmware %s\n", pci_name(priv->pdev),
4494 priv->fw_pref, priv->fw_alt);
4495 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
4496 if (rc) {
4497 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4498 pci_name(priv->pdev), priv->fw_alt);
4499 return rc;
4500 }
4501 return 0;
4502 }
4503
4504 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
4505 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
4506 {
4507 struct mwl8k_priv *priv = context;
4508 struct mwl8k_device_info *di = priv->device_info;
4509 int rc;
4510
4511 switch (priv->fw_state) {
4512 case FW_STATE_INIT:
4513 if (!fw) {
4514 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
4515 pci_name(priv->pdev), di->helper_image);
4516 goto fail;
4517 }
4518 priv->fw_helper = fw;
4519 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
4520 true);
4521 if (rc && priv->fw_alt) {
4522 rc = mwl8k_request_alt_fw(priv);
4523 if (rc)
4524 goto fail;
4525 priv->fw_state = FW_STATE_LOADING_ALT;
4526 } else if (rc)
4527 goto fail;
4528 else
4529 priv->fw_state = FW_STATE_LOADING_PREF;
4530 break;
4531
4532 case FW_STATE_LOADING_PREF:
4533 if (!fw) {
4534 if (priv->fw_alt) {
4535 rc = mwl8k_request_alt_fw(priv);
4536 if (rc)
4537 goto fail;
4538 priv->fw_state = FW_STATE_LOADING_ALT;
4539 } else
4540 goto fail;
4541 } else {
4542 priv->fw_ucode = fw;
4543 rc = mwl8k_firmware_load_success(priv);
4544 if (rc)
4545 goto fail;
4546 else
4547 complete(&priv->firmware_loading_complete);
4548 }
4549 break;
4550
4551 case FW_STATE_LOADING_ALT:
4552 if (!fw) {
4553 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4554 pci_name(priv->pdev), di->helper_image);
4555 goto fail;
4556 }
4557 priv->fw_ucode = fw;
4558 rc = mwl8k_firmware_load_success(priv);
4559 if (rc)
4560 goto fail;
4561 else
4562 complete(&priv->firmware_loading_complete);
4563 break;
4564
4565 default:
4566 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
4567 MWL8K_NAME, priv->fw_state);
4568 BUG_ON(1);
4569 }
4570
4571 return;
4572
4573 fail:
4574 priv->fw_state = FW_STATE_ERROR;
4575 complete(&priv->firmware_loading_complete);
4576 device_release_driver(&priv->pdev->dev);
4577 mwl8k_release_firmware(priv);
4578 }
4579
4580 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
4581 bool nowait)
4582 {
4583 struct mwl8k_priv *priv = hw->priv;
4584 int rc;
4585
4586 /* Reset firmware and hardware */
4587 mwl8k_hw_reset(priv);
4588
4589 /* Ask userland hotplug daemon for the device firmware */
4590 rc = mwl8k_request_firmware(priv, fw_image, nowait);
4591 if (rc) {
4592 wiphy_err(hw->wiphy, "Firmware files not found\n");
4593 return rc;
4594 }
4595
4596 if (nowait)
4597 return rc;
4598
4599 /* Load firmware into hardware */
4600 rc = mwl8k_load_firmware(hw);
4601 if (rc)
4602 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4603
4604 /* Reclaim memory once firmware is successfully loaded */
4605 mwl8k_release_firmware(priv);
4606
4607 return rc;
4608 }
4609
4610 /* initialize hw after successfully loading a firmware image */
4611 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
4612 {
4613 struct mwl8k_priv *priv = hw->priv;
4614 int rc = 0;
4615 int i;
4616
4617 if (priv->ap_fw) {
4618 priv->rxd_ops = priv->device_info->ap_rxd_ops;
4619 if (priv->rxd_ops == NULL) {
4620 wiphy_err(hw->wiphy,
4621 "Driver does not have AP firmware image support for this hardware\n");
4622 goto err_stop_firmware;
4623 }
4624 } else {
4625 priv->rxd_ops = &rxd_sta_ops;
4626 }
4627
4628 priv->sniffer_enabled = false;
4629 priv->wmm_enabled = false;
4630 priv->pending_tx_pkts = 0;
4631
4632 rc = mwl8k_rxq_init(hw, 0);
4633 if (rc)
4634 goto err_stop_firmware;
4635 rxq_refill(hw, 0, INT_MAX);
4636
4637 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4638 rc = mwl8k_txq_init(hw, i);
4639 if (rc)
4640 goto err_free_queues;
4641 }
4642
4643 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4644 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4645 iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4646 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4647 iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4648
4649 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4650 IRQF_SHARED, MWL8K_NAME, hw);
4651 if (rc) {
4652 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4653 goto err_free_queues;
4654 }
4655
4656 /*
4657 * Temporarily enable interrupts. Initial firmware host
4658 * commands use interrupts and avoid polling. Disable
4659 * interrupts when done.
4660 */
4661 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4662
4663 /* Get config data, mac addrs etc */
4664 if (priv->ap_fw) {
4665 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4666 if (!rc)
4667 rc = mwl8k_cmd_set_hw_spec(hw);
4668 } else {
4669 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4670 }
4671 if (rc) {
4672 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
4673 goto err_free_irq;
4674 }
4675
4676 /* Turn radio off */
4677 rc = mwl8k_cmd_radio_disable(hw);
4678 if (rc) {
4679 wiphy_err(hw->wiphy, "Cannot disable\n");
4680 goto err_free_irq;
4681 }
4682
4683 /* Clear MAC address */
4684 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4685 if (rc) {
4686 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
4687 goto err_free_irq;
4688 }
4689
4690 /* Disable interrupts */
4691 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4692 free_irq(priv->pdev->irq, hw);
4693
4694 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
4695 priv->device_info->part_name,
4696 priv->hw_rev, hw->wiphy->perm_addr,
4697 priv->ap_fw ? "AP" : "STA",
4698 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4699 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4700
4701 return 0;
4702
4703 err_free_irq:
4704 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4705 free_irq(priv->pdev->irq, hw);
4706
4707 err_free_queues:
4708 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4709 mwl8k_txq_deinit(hw, i);
4710 mwl8k_rxq_deinit(hw, 0);
4711
4712 err_stop_firmware:
4713 mwl8k_hw_reset(priv);
4714
4715 return rc;
4716 }
4717
4718 /*
4719 * invoke mwl8k_reload_firmware to change the firmware image after the device
4720 * has already been registered
4721 */
4722 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
4723 {
4724 int i, rc = 0;
4725 struct mwl8k_priv *priv = hw->priv;
4726
4727 mwl8k_stop(hw);
4728 mwl8k_rxq_deinit(hw, 0);
4729
4730 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4731 mwl8k_txq_deinit(hw, i);
4732
4733 rc = mwl8k_init_firmware(hw, fw_image, false);
4734 if (rc)
4735 goto fail;
4736
4737 rc = mwl8k_probe_hw(hw);
4738 if (rc)
4739 goto fail;
4740
4741 rc = mwl8k_start(hw);
4742 if (rc)
4743 goto fail;
4744
4745 rc = mwl8k_config(hw, ~0);
4746 if (rc)
4747 goto fail;
4748
4749 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4750 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
4751 if (rc)
4752 goto fail;
4753 }
4754
4755 return rc;
4756
4757 fail:
4758 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
4759 return rc;
4760 }
4761
4762 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
4763 {
4764 struct ieee80211_hw *hw = priv->hw;
4765 int i, rc;
4766
4767 rc = mwl8k_load_firmware(hw);
4768 mwl8k_release_firmware(priv);
4769 if (rc) {
4770 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4771 return rc;
4772 }
4773
4774 /*
4775 * Extra headroom is the size of the required DMA header
4776 * minus the size of the smallest 802.11 frame (CTS frame).
4777 */
4778 hw->extra_tx_headroom =
4779 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
4780
4781 hw->channel_change_time = 10;
4782
4783 hw->queues = MWL8K_TX_QUEUES;
4784
4785 /* Set rssi values to dBm */
4786 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
4787 hw->vif_data_size = sizeof(struct mwl8k_vif);
4788 hw->sta_data_size = sizeof(struct mwl8k_sta);
4789
4790 priv->macids_used = 0;
4791 INIT_LIST_HEAD(&priv->vif_list);
4792
4793 /* Set default radio state and preamble */
4794 priv->radio_on = 0;
4795 priv->radio_short_preamble = 0;
4796
4797 /* Finalize join worker */
4798 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4799
4800 /* TX reclaim and RX tasklets. */
4801 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4802 tasklet_disable(&priv->poll_tx_task);
4803 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4804 tasklet_disable(&priv->poll_rx_task);
4805
4806 /* Power management cookie */
4807 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4808 if (priv->cookie == NULL)
4809 return -ENOMEM;
4810
4811 mutex_init(&priv->fw_mutex);
4812 priv->fw_mutex_owner = NULL;
4813 priv->fw_mutex_depth = 0;
4814 priv->hostcmd_wait = NULL;
4815
4816 spin_lock_init(&priv->tx_lock);
4817
4818 priv->tx_wait = NULL;
4819
4820 rc = mwl8k_probe_hw(hw);
4821 if (rc)
4822 goto err_free_cookie;
4823
4824 hw->wiphy->interface_modes = 0;
4825 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
4826 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4827 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
4828 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4829
4830 rc = ieee80211_register_hw(hw);
4831 if (rc) {
4832 wiphy_err(hw->wiphy, "Cannot register device\n");
4833 goto err_unprobe_hw;
4834 }
4835
4836 return 0;
4837
4838 err_unprobe_hw:
4839 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4840 mwl8k_txq_deinit(hw, i);
4841 mwl8k_rxq_deinit(hw, 0);
4842
4843 err_free_cookie:
4844 if (priv->cookie != NULL)
4845 pci_free_consistent(priv->pdev, 4,
4846 priv->cookie, priv->cookie_dma);
4847
4848 return rc;
4849 }
4850 static int __devinit mwl8k_probe(struct pci_dev *pdev,
4851 const struct pci_device_id *id)
4852 {
4853 static int printed_version;
4854 struct ieee80211_hw *hw;
4855 struct mwl8k_priv *priv;
4856 struct mwl8k_device_info *di;
4857 int rc;
4858
4859 if (!printed_version) {
4860 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
4861 printed_version = 1;
4862 }
4863
4864
4865 rc = pci_enable_device(pdev);
4866 if (rc) {
4867 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
4868 MWL8K_NAME);
4869 return rc;
4870 }
4871
4872 rc = pci_request_regions(pdev, MWL8K_NAME);
4873 if (rc) {
4874 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
4875 MWL8K_NAME);
4876 goto err_disable_device;
4877 }
4878
4879 pci_set_master(pdev);
4880
4881
4882 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
4883 if (hw == NULL) {
4884 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
4885 rc = -ENOMEM;
4886 goto err_free_reg;
4887 }
4888
4889 SET_IEEE80211_DEV(hw, &pdev->dev);
4890 pci_set_drvdata(pdev, hw);
4891
4892 priv = hw->priv;
4893 priv->hw = hw;
4894 priv->pdev = pdev;
4895 priv->device_info = &mwl8k_info_tbl[id->driver_data];
4896
4897
4898 priv->sram = pci_iomap(pdev, 0, 0x10000);
4899 if (priv->sram == NULL) {
4900 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
4901 goto err_iounmap;
4902 }
4903
4904 /*
4905 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
4906 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
4907 */
4908 priv->regs = pci_iomap(pdev, 1, 0x10000);
4909 if (priv->regs == NULL) {
4910 priv->regs = pci_iomap(pdev, 2, 0x10000);
4911 if (priv->regs == NULL) {
4912 wiphy_err(hw->wiphy, "Cannot map device registers\n");
4913 goto err_iounmap;
4914 }
4915 }
4916
4917 /*
4918 * Choose the initial fw image depending on user input. If a second
4919 * image is available, make it the alternative image that will be
4920 * loaded if the first one fails.
4921 */
4922 init_completion(&priv->firmware_loading_complete);
4923 di = priv->device_info;
4924 if (ap_mode_default && di->fw_image_ap) {
4925 priv->fw_pref = di->fw_image_ap;
4926 priv->fw_alt = di->fw_image_sta;
4927 } else if (!ap_mode_default && di->fw_image_sta) {
4928 priv->fw_pref = di->fw_image_sta;
4929 priv->fw_alt = di->fw_image_ap;
4930 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
4931 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
4932 priv->fw_pref = di->fw_image_sta;
4933 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
4934 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
4935 priv->fw_pref = di->fw_image_ap;
4936 }
4937 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
4938 if (rc)
4939 goto err_stop_firmware;
4940 return rc;
4941
4942 err_stop_firmware:
4943 mwl8k_hw_reset(priv);
4944
4945 err_iounmap:
4946 if (priv->regs != NULL)
4947 pci_iounmap(pdev, priv->regs);
4948
4949 if (priv->sram != NULL)
4950 pci_iounmap(pdev, priv->sram);
4951
4952 pci_set_drvdata(pdev, NULL);
4953 ieee80211_free_hw(hw);
4954
4955 err_free_reg:
4956 pci_release_regions(pdev);
4957
4958 err_disable_device:
4959 pci_disable_device(pdev);
4960
4961 return rc;
4962 }
4963
4964 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4965 {
4966 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4967 }
4968
4969 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4970 {
4971 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4972 struct mwl8k_priv *priv;
4973 int i;
4974
4975 if (hw == NULL)
4976 return;
4977 priv = hw->priv;
4978
4979 wait_for_completion(&priv->firmware_loading_complete);
4980
4981 if (priv->fw_state == FW_STATE_ERROR) {
4982 mwl8k_hw_reset(priv);
4983 goto unmap;
4984 }
4985
4986 ieee80211_stop_queues(hw);
4987
4988 ieee80211_unregister_hw(hw);
4989
4990 /* Remove TX reclaim and RX tasklets. */
4991 tasklet_kill(&priv->poll_tx_task);
4992 tasklet_kill(&priv->poll_rx_task);
4993
4994 /* Stop hardware */
4995 mwl8k_hw_reset(priv);
4996
4997 /* Return all skbs to mac80211 */
4998 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4999 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5000
5001 for (i = 0; i < MWL8K_TX_QUEUES; i++)
5002 mwl8k_txq_deinit(hw, i);
5003
5004 mwl8k_rxq_deinit(hw, 0);
5005
5006 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5007
5008 unmap:
5009 pci_iounmap(pdev, priv->regs);
5010 pci_iounmap(pdev, priv->sram);
5011 pci_set_drvdata(pdev, NULL);
5012 ieee80211_free_hw(hw);
5013 pci_release_regions(pdev);
5014 pci_disable_device(pdev);
5015 }
5016
5017 static struct pci_driver mwl8k_driver = {
5018 .name = MWL8K_NAME,
5019 .id_table = mwl8k_pci_id_table,
5020 .probe = mwl8k_probe,
5021 .remove = __devexit_p(mwl8k_remove),
5022 .shutdown = __devexit_p(mwl8k_shutdown),
5023 };
5024
5025 static int __init mwl8k_init(void)
5026 {
5027 return pci_register_driver(&mwl8k_driver);
5028 }
5029
5030 static void __exit mwl8k_exit(void)
5031 {
5032 pci_unregister_driver(&mwl8k_driver);
5033 }
5034
5035 module_init(mwl8k_init);
5036 module_exit(mwl8k_exit);
5037
5038 MODULE_DESCRIPTION(MWL8K_DESC);
5039 MODULE_VERSION(MWL8K_VERSION);
5040 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5041 MODULE_LICENSE("GPL");
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