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FRV: Use generic show_interrupts()
[cris-mirror.git] / drivers / net / wireless / mwl8k.c
blob36952274950e3cf7537834a132d5374f7b2b7322
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
141 struct mwl8k_device_info *device_info;
142
143 void __iomem *sram;
144 void __iomem *regs;
145
146 /* firmware */
147 const struct firmware *fw_helper;
148 const struct firmware *fw_ucode;
149
150 /* hardware/firmware parameters */
151 bool ap_fw;
152 struct rxd_ops *rxd_ops;
153 struct ieee80211_supported_band band_24;
154 struct ieee80211_channel channels_24[14];
155 struct ieee80211_rate rates_24[14];
156 struct ieee80211_supported_band band_50;
157 struct ieee80211_channel channels_50[4];
158 struct ieee80211_rate rates_50[9];
159 u32 ap_macids_supported;
160 u32 sta_macids_supported;
161
162 /* firmware access */
163 struct mutex fw_mutex;
164 struct task_struct *fw_mutex_owner;
165 int fw_mutex_depth;
166 struct completion *hostcmd_wait;
167
168 /* lock held over TX and TX reap */
169 spinlock_t tx_lock;
170
171 /* TX quiesce completion, protected by fw_mutex and tx_lock */
172 struct completion *tx_wait;
173
174 /* List of interfaces. */
175 u32 macids_used;
176 struct list_head vif_list;
177
178 /* power management status cookie from firmware */
179 u32 *cookie;
180 dma_addr_t cookie_dma;
181
182 u16 num_mcaddrs;
183 u8 hw_rev;
184 u32 fw_rev;
185
186 /*
187 * Running count of TX packets in flight, to avoid
188 * iterating over the transmit rings each time.
189 */
190 int pending_tx_pkts;
191
192 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
193 struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];
194
195 bool radio_on;
196 bool radio_short_preamble;
197 bool sniffer_enabled;
198 bool wmm_enabled;
199
200 /* XXX need to convert this to handle multiple interfaces */
201 bool capture_beacon;
202 u8 capture_bssid[ETH_ALEN];
203 struct sk_buff *beacon_skb;
204
205 /*
206 * This FJ worker has to be global as it is scheduled from the
207 * RX handler. At this point we don't know which interface it
208 * belongs to until the list of bssids waiting to complete join
209 * is checked.
210 */
211 struct work_struct finalize_join_worker;
212
213 /* Tasklet to perform TX reclaim. */
214 struct tasklet_struct poll_tx_task;
215
216 /* Tasklet to perform RX. */
217 struct tasklet_struct poll_rx_task;
218
219 /* Most recently reported noise in dBm */
220 s8 noise;
221
222 /*
223 * preserve the queue configurations so they can be restored if/when
224 * the firmware image is swapped.
225 */
226 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_QUEUES];
227
228 /* async firmware loading state */
229 unsigned fw_state;
230 char *fw_pref;
231 char *fw_alt;
232 struct completion firmware_loading_complete;
233 };
234
235 #define MAX_WEP_KEY_LEN 13
236 #define NUM_WEP_KEYS 4
237
238 /* Per interface specific private data */
239 struct mwl8k_vif {
240 struct list_head list;
241 struct ieee80211_vif *vif;
242
243 /* Firmware macid for this vif. */
244 int macid;
245
246 /* Non AMPDU sequence number assigned by driver. */
247 u16 seqno;
248
249 /* Saved WEP keys */
250 struct {
251 u8 enabled;
252 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
253 } wep_key_conf[NUM_WEP_KEYS];
254
255 /* BSSID */
256 u8 bssid[ETH_ALEN];
257
258 /* A flag to indicate is HW crypto is enabled for this bssid */
259 bool is_hw_crypto_enabled;
260 };
261 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
262 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
263
264 struct mwl8k_sta {
265 /* Index into station database. Returned by UPDATE_STADB. */
266 u8 peer_id;
267 };
268 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
269
270 static const struct ieee80211_channel mwl8k_channels_24[] = {
271 { .center_freq = 2412, .hw_value = 1, },
272 { .center_freq = 2417, .hw_value = 2, },
273 { .center_freq = 2422, .hw_value = 3, },
274 { .center_freq = 2427, .hw_value = 4, },
275 { .center_freq = 2432, .hw_value = 5, },
276 { .center_freq = 2437, .hw_value = 6, },
277 { .center_freq = 2442, .hw_value = 7, },
278 { .center_freq = 2447, .hw_value = 8, },
279 { .center_freq = 2452, .hw_value = 9, },
280 { .center_freq = 2457, .hw_value = 10, },
281 { .center_freq = 2462, .hw_value = 11, },
282 { .center_freq = 2467, .hw_value = 12, },
283 { .center_freq = 2472, .hw_value = 13, },
284 { .center_freq = 2484, .hw_value = 14, },
285 };
286
287 static const struct ieee80211_rate mwl8k_rates_24[] = {
288 { .bitrate = 10, .hw_value = 2, },
289 { .bitrate = 20, .hw_value = 4, },
290 { .bitrate = 55, .hw_value = 11, },
291 { .bitrate = 110, .hw_value = 22, },
292 { .bitrate = 220, .hw_value = 44, },
293 { .bitrate = 60, .hw_value = 12, },
294 { .bitrate = 90, .hw_value = 18, },
295 { .bitrate = 120, .hw_value = 24, },
296 { .bitrate = 180, .hw_value = 36, },
297 { .bitrate = 240, .hw_value = 48, },
298 { .bitrate = 360, .hw_value = 72, },
299 { .bitrate = 480, .hw_value = 96, },
300 { .bitrate = 540, .hw_value = 108, },
301 { .bitrate = 720, .hw_value = 144, },
302 };
303
304 static const struct ieee80211_channel mwl8k_channels_50[] = {
305 { .center_freq = 5180, .hw_value = 36, },
306 { .center_freq = 5200, .hw_value = 40, },
307 { .center_freq = 5220, .hw_value = 44, },
308 { .center_freq = 5240, .hw_value = 48, },
309 };
310
311 static const struct ieee80211_rate mwl8k_rates_50[] = {
312 { .bitrate = 60, .hw_value = 12, },
313 { .bitrate = 90, .hw_value = 18, },
314 { .bitrate = 120, .hw_value = 24, },
315 { .bitrate = 180, .hw_value = 36, },
316 { .bitrate = 240, .hw_value = 48, },
317 { .bitrate = 360, .hw_value = 72, },
318 { .bitrate = 480, .hw_value = 96, },
319 { .bitrate = 540, .hw_value = 108, },
320 { .bitrate = 720, .hw_value = 144, },
321 };
322
323 /* Set or get info from Firmware */
324 #define MWL8K_CMD_GET 0x0000
325 #define MWL8K_CMD_SET 0x0001
326 #define MWL8K_CMD_SET_LIST 0x0002
327
328 /* Firmware command codes */
329 #define MWL8K_CMD_CODE_DNLD 0x0001
330 #define MWL8K_CMD_GET_HW_SPEC 0x0003
331 #define MWL8K_CMD_SET_HW_SPEC 0x0004
332 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
333 #define MWL8K_CMD_GET_STAT 0x0014
334 #define MWL8K_CMD_RADIO_CONTROL 0x001c
335 #define MWL8K_CMD_RF_TX_POWER 0x001e
336 #define MWL8K_CMD_TX_POWER 0x001f
337 #define MWL8K_CMD_RF_ANTENNA 0x0020
338 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
339 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
340 #define MWL8K_CMD_SET_POST_SCAN 0x0108
341 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
342 #define MWL8K_CMD_SET_AID 0x010d
343 #define MWL8K_CMD_SET_RATE 0x0110
344 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
345 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
346 #define MWL8K_CMD_SET_SLOT 0x0114
347 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
348 #define MWL8K_CMD_SET_WMM_MODE 0x0123
349 #define MWL8K_CMD_MIMO_CONFIG 0x0125
350 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
351 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
352 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
353 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
354 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
355 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
356 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
357 #define MWL8K_CMD_UPDATE_STADB 0x1123
358
359 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
360 {
361 u16 command = le16_to_cpu(cmd);
362
363 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
364 snprintf(buf, bufsize, "%s", #x);\
365 return buf;\
366 } while (0)
367 switch (command & ~0x8000) {
368 MWL8K_CMDNAME(CODE_DNLD);
369 MWL8K_CMDNAME(GET_HW_SPEC);
370 MWL8K_CMDNAME(SET_HW_SPEC);
371 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
372 MWL8K_CMDNAME(GET_STAT);
373 MWL8K_CMDNAME(RADIO_CONTROL);
374 MWL8K_CMDNAME(RF_TX_POWER);
375 MWL8K_CMDNAME(TX_POWER);
376 MWL8K_CMDNAME(RF_ANTENNA);
377 MWL8K_CMDNAME(SET_BEACON);
378 MWL8K_CMDNAME(SET_PRE_SCAN);
379 MWL8K_CMDNAME(SET_POST_SCAN);
380 MWL8K_CMDNAME(SET_RF_CHANNEL);
381 MWL8K_CMDNAME(SET_AID);
382 MWL8K_CMDNAME(SET_RATE);
383 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
384 MWL8K_CMDNAME(RTS_THRESHOLD);
385 MWL8K_CMDNAME(SET_SLOT);
386 MWL8K_CMDNAME(SET_EDCA_PARAMS);
387 MWL8K_CMDNAME(SET_WMM_MODE);
388 MWL8K_CMDNAME(MIMO_CONFIG);
389 MWL8K_CMDNAME(USE_FIXED_RATE);
390 MWL8K_CMDNAME(ENABLE_SNIFFER);
391 MWL8K_CMDNAME(SET_MAC_ADDR);
392 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
393 MWL8K_CMDNAME(BSS_START);
394 MWL8K_CMDNAME(SET_NEW_STN);
395 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
396 MWL8K_CMDNAME(UPDATE_STADB);
397 default:
398 snprintf(buf, bufsize, "0x%x", cmd);
399 }
400 #undef MWL8K_CMDNAME
401
402 return buf;
403 }
404
405 /* Hardware and firmware reset */
406 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
407 {
408 iowrite32(MWL8K_H2A_INT_RESET,
409 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
410 iowrite32(MWL8K_H2A_INT_RESET,
411 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
412 msleep(20);
413 }
414
415 /* Release fw image */
416 static void mwl8k_release_fw(const struct firmware **fw)
417 {
418 if (*fw == NULL)
419 return;
420 release_firmware(*fw);
421 *fw = NULL;
422 }
423
424 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
425 {
426 mwl8k_release_fw(&priv->fw_ucode);
427 mwl8k_release_fw(&priv->fw_helper);
428 }
429
430 /* states for asynchronous f/w loading */
431 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
432 enum {
433 FW_STATE_INIT = 0,
434 FW_STATE_LOADING_PREF,
435 FW_STATE_LOADING_ALT,
436 FW_STATE_ERROR,
437 };
438
439 /* Request fw image */
440 static int mwl8k_request_fw(struct mwl8k_priv *priv,
441 const char *fname, const struct firmware **fw,
442 bool nowait)
443 {
444 /* release current image */
445 if (*fw != NULL)
446 mwl8k_release_fw(fw);
447
448 if (nowait)
449 return request_firmware_nowait(THIS_MODULE, 1, fname,
450 &priv->pdev->dev, GFP_KERNEL,
451 priv, mwl8k_fw_state_machine);
452 else
453 return request_firmware(fw, fname, &priv->pdev->dev);
454 }
455
456 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
457 bool nowait)
458 {
459 struct mwl8k_device_info *di = priv->device_info;
460 int rc;
461
462 if (di->helper_image != NULL) {
463 if (nowait)
464 rc = mwl8k_request_fw(priv, di->helper_image,
465 &priv->fw_helper, true);
466 else
467 rc = mwl8k_request_fw(priv, di->helper_image,
468 &priv->fw_helper, false);
469 if (rc)
470 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
471 pci_name(priv->pdev), di->helper_image);
472
473 if (rc || nowait)
474 return rc;
475 }
476
477 if (nowait) {
478 /*
479 * if we get here, no helper image is needed. Skip the
480 * FW_STATE_INIT state.
481 */
482 priv->fw_state = FW_STATE_LOADING_PREF;
483 rc = mwl8k_request_fw(priv, fw_image,
484 &priv->fw_ucode,
485 true);
486 } else
487 rc = mwl8k_request_fw(priv, fw_image,
488 &priv->fw_ucode, false);
489 if (rc) {
490 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
491 pci_name(priv->pdev), fw_image);
492 mwl8k_release_fw(&priv->fw_helper);
493 return rc;
494 }
495
496 return 0;
497 }
498
499 struct mwl8k_cmd_pkt {
500 __le16 code;
501 __le16 length;
502 __u8 seq_num;
503 __u8 macid;
504 __le16 result;
505 char payload[0];
506 } __packed;
507
508 /*
509 * Firmware loading.
510 */
511 static int
512 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
513 {
514 void __iomem *regs = priv->regs;
515 dma_addr_t dma_addr;
516 int loops;
517
518 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
519 if (pci_dma_mapping_error(priv->pdev, dma_addr))
520 return -ENOMEM;
521
522 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
523 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
524 iowrite32(MWL8K_H2A_INT_DOORBELL,
525 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
526 iowrite32(MWL8K_H2A_INT_DUMMY,
527 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
528
529 loops = 1000;
530 do {
531 u32 int_code;
532
533 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
534 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
535 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
536 break;
537 }
538
539 cond_resched();
540 udelay(1);
541 } while (--loops);
542
543 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
544
545 return loops ? 0 : -ETIMEDOUT;
546 }
547
548 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
549 const u8 *data, size_t length)
550 {
551 struct mwl8k_cmd_pkt *cmd;
552 int done;
553 int rc = 0;
554
555 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
556 if (cmd == NULL)
557 return -ENOMEM;
558
559 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
560 cmd->seq_num = 0;
561 cmd->macid = 0;
562 cmd->result = 0;
563
564 done = 0;
565 while (length) {
566 int block_size = length > 256 ? 256 : length;
567
568 memcpy(cmd->payload, data + done, block_size);
569 cmd->length = cpu_to_le16(block_size);
570
571 rc = mwl8k_send_fw_load_cmd(priv, cmd,
572 sizeof(*cmd) + block_size);
573 if (rc)
574 break;
575
576 done += block_size;
577 length -= block_size;
578 }
579
580 if (!rc) {
581 cmd->length = 0;
582 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
583 }
584
585 kfree(cmd);
586
587 return rc;
588 }
589
590 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
591 const u8 *data, size_t length)
592 {
593 unsigned char *buffer;
594 int may_continue, rc = 0;
595 u32 done, prev_block_size;
596
597 buffer = kmalloc(1024, GFP_KERNEL);
598 if (buffer == NULL)
599 return -ENOMEM;
600
601 done = 0;
602 prev_block_size = 0;
603 may_continue = 1000;
604 while (may_continue > 0) {
605 u32 block_size;
606
607 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
608 if (block_size & 1) {
609 block_size &= ~1;
610 may_continue--;
611 } else {
612 done += prev_block_size;
613 length -= prev_block_size;
614 }
615
616 if (block_size > 1024 || block_size > length) {
617 rc = -EOVERFLOW;
618 break;
619 }
620
621 if (length == 0) {
622 rc = 0;
623 break;
624 }
625
626 if (block_size == 0) {
627 rc = -EPROTO;
628 may_continue--;
629 udelay(1);
630 continue;
631 }
632
633 prev_block_size = block_size;
634 memcpy(buffer, data + done, block_size);
635
636 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
637 if (rc)
638 break;
639 }
640
641 if (!rc && length != 0)
642 rc = -EREMOTEIO;
643
644 kfree(buffer);
645
646 return rc;
647 }
648
649 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
650 {
651 struct mwl8k_priv *priv = hw->priv;
652 const struct firmware *fw = priv->fw_ucode;
653 int rc;
654 int loops;
655
656 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
657 const struct firmware *helper = priv->fw_helper;
658
659 if (helper == NULL) {
660 printk(KERN_ERR "%s: helper image needed but none "
661 "given\n", pci_name(priv->pdev));
662 return -EINVAL;
663 }
664
665 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
666 if (rc) {
667 printk(KERN_ERR "%s: unable to load firmware "
668 "helper image\n", pci_name(priv->pdev));
669 return rc;
670 }
671 msleep(5);
672
673 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
674 } else {
675 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
676 }
677
678 if (rc) {
679 printk(KERN_ERR "%s: unable to load firmware image\n",
680 pci_name(priv->pdev));
681 return rc;
682 }
683
684 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
685
686 loops = 500000;
687 do {
688 u32 ready_code;
689
690 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
691 if (ready_code == MWL8K_FWAP_READY) {
692 priv->ap_fw = 1;
693 break;
694 } else if (ready_code == MWL8K_FWSTA_READY) {
695 priv->ap_fw = 0;
696 break;
697 }
698
699 cond_resched();
700 udelay(1);
701 } while (--loops);
702
703 return loops ? 0 : -ETIMEDOUT;
704 }
705
706
707 /* DMA header used by firmware and hardware. */
708 struct mwl8k_dma_data {
709 __le16 fwlen;
710 struct ieee80211_hdr wh;
711 char data[0];
712 } __packed;
713
714 /* Routines to add/remove DMA header from skb. */
715 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
716 {
717 struct mwl8k_dma_data *tr;
718 int hdrlen;
719
720 tr = (struct mwl8k_dma_data *)skb->data;
721 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
722
723 if (hdrlen != sizeof(tr->wh)) {
724 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
725 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
726 *((__le16 *)(tr->data - 2)) = qos;
727 } else {
728 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
729 }
730 }
731
732 if (hdrlen != sizeof(*tr))
733 skb_pull(skb, sizeof(*tr) - hdrlen);
734 }
735
736 static void
737 mwl8k_add_dma_header(struct sk_buff *skb, int tail_pad)
738 {
739 struct ieee80211_hdr *wh;
740 int hdrlen;
741 int reqd_hdrlen;
742 struct mwl8k_dma_data *tr;
743
744 /*
745 * Add a firmware DMA header; the firmware requires that we
746 * present a 2-byte payload length followed by a 4-address
747 * header (without QoS field), followed (optionally) by any
748 * WEP/ExtIV header (but only filled in for CCMP).
749 */
750 wh = (struct ieee80211_hdr *)skb->data;
751
752 hdrlen = ieee80211_hdrlen(wh->frame_control);
753 reqd_hdrlen = sizeof(*tr);
754
755 if (hdrlen != reqd_hdrlen)
756 skb_push(skb, reqd_hdrlen - hdrlen);
757
758 if (ieee80211_is_data_qos(wh->frame_control))
759 hdrlen -= IEEE80211_QOS_CTL_LEN;
760
761 tr = (struct mwl8k_dma_data *)skb->data;
762 if (wh != &tr->wh)
763 memmove(&tr->wh, wh, hdrlen);
764 if (hdrlen != sizeof(tr->wh))
765 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
766
767 /*
768 * Firmware length is the length of the fully formed "802.11
769 * payload". That is, everything except for the 802.11 header.
770 * This includes all crypto material including the MIC.
771 */
772 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
773 }
774
775 static void mwl8k_encapsulate_tx_frame(struct sk_buff *skb)
776 {
777 struct ieee80211_hdr *wh;
778 struct ieee80211_tx_info *tx_info;
779 struct ieee80211_key_conf *key_conf;
780 int data_pad;
781
782 wh = (struct ieee80211_hdr *)skb->data;
783
784 tx_info = IEEE80211_SKB_CB(skb);
785
786 key_conf = NULL;
787 if (ieee80211_is_data(wh->frame_control))
788 key_conf = tx_info->control.hw_key;
789
790 /*
791 * Make sure the packet header is in the DMA header format (4-address
792 * without QoS), the necessary crypto padding between the header and the
793 * payload has already been provided by mac80211, but it doesn't add tail
794 * padding when HW crypto is enabled.
795 *
796 * We have the following trailer padding requirements:
797 * - WEP: 4 trailer bytes (ICV)
798 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
799 * - CCMP: 8 trailer bytes (MIC)
800 */
801 data_pad = 0;
802 if (key_conf != NULL) {
803 switch (key_conf->cipher) {
804 case WLAN_CIPHER_SUITE_WEP40:
805 case WLAN_CIPHER_SUITE_WEP104:
806 data_pad = 4;
807 break;
808 case WLAN_CIPHER_SUITE_TKIP:
809 data_pad = 12;
810 break;
811 case WLAN_CIPHER_SUITE_CCMP:
812 data_pad = 8;
813 break;
814 }
815 }
816 mwl8k_add_dma_header(skb, data_pad);
817 }
818
819 /*
820 * Packet reception for 88w8366 AP firmware.
821 */
822 struct mwl8k_rxd_8366_ap {
823 __le16 pkt_len;
824 __u8 sq2;
825 __u8 rate;
826 __le32 pkt_phys_addr;
827 __le32 next_rxd_phys_addr;
828 __le16 qos_control;
829 __le16 htsig2;
830 __le32 hw_rssi_info;
831 __le32 hw_noise_floor_info;
832 __u8 noise_floor;
833 __u8 pad0[3];
834 __u8 rssi;
835 __u8 rx_status;
836 __u8 channel;
837 __u8 rx_ctrl;
838 } __packed;
839
840 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
841 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
842 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
843
844 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
845
846 /* 8366 AP rx_status bits */
847 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
848 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
849 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
850 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
851 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
852
853 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
854 {
855 struct mwl8k_rxd_8366_ap *rxd = _rxd;
856
857 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
858 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
859 }
860
861 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
862 {
863 struct mwl8k_rxd_8366_ap *rxd = _rxd;
864
865 rxd->pkt_len = cpu_to_le16(len);
866 rxd->pkt_phys_addr = cpu_to_le32(addr);
867 wmb();
868 rxd->rx_ctrl = 0;
869 }
870
871 static int
872 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
873 __le16 *qos, s8 *noise)
874 {
875 struct mwl8k_rxd_8366_ap *rxd = _rxd;
876
877 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
878 return -1;
879 rmb();
880
881 memset(status, 0, sizeof(*status));
882
883 status->signal = -rxd->rssi;
884 *noise = -rxd->noise_floor;
885
886 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
887 status->flag |= RX_FLAG_HT;
888 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
889 status->flag |= RX_FLAG_40MHZ;
890 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
891 } else {
892 int i;
893
894 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
895 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
896 status->rate_idx = i;
897 break;
898 }
899 }
900 }
901
902 if (rxd->channel > 14) {
903 status->band = IEEE80211_BAND_5GHZ;
904 if (!(status->flag & RX_FLAG_HT))
905 status->rate_idx -= 5;
906 } else {
907 status->band = IEEE80211_BAND_2GHZ;
908 }
909 status->freq = ieee80211_channel_to_frequency(rxd->channel,
910 status->band);
911
912 *qos = rxd->qos_control;
913
914 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
915 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
916 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
917 status->flag |= RX_FLAG_MMIC_ERROR;
918
919 return le16_to_cpu(rxd->pkt_len);
920 }
921
922 static struct rxd_ops rxd_8366_ap_ops = {
923 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
924 .rxd_init = mwl8k_rxd_8366_ap_init,
925 .rxd_refill = mwl8k_rxd_8366_ap_refill,
926 .rxd_process = mwl8k_rxd_8366_ap_process,
927 };
928
929 /*
930 * Packet reception for STA firmware.
931 */
932 struct mwl8k_rxd_sta {
933 __le16 pkt_len;
934 __u8 link_quality;
935 __u8 noise_level;
936 __le32 pkt_phys_addr;
937 __le32 next_rxd_phys_addr;
938 __le16 qos_control;
939 __le16 rate_info;
940 __le32 pad0[4];
941 __u8 rssi;
942 __u8 channel;
943 __le16 pad1;
944 __u8 rx_ctrl;
945 __u8 rx_status;
946 __u8 pad2[2];
947 } __packed;
948
949 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
950 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
951 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
952 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
953 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
954 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
955
956 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
957 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
958 /* ICV=0 or MIC=1 */
959 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
960 /* Key is uploaded only in failure case */
961 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
962
963 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
964 {
965 struct mwl8k_rxd_sta *rxd = _rxd;
966
967 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
968 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
969 }
970
971 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
972 {
973 struct mwl8k_rxd_sta *rxd = _rxd;
974
975 rxd->pkt_len = cpu_to_le16(len);
976 rxd->pkt_phys_addr = cpu_to_le32(addr);
977 wmb();
978 rxd->rx_ctrl = 0;
979 }
980
981 static int
982 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
983 __le16 *qos, s8 *noise)
984 {
985 struct mwl8k_rxd_sta *rxd = _rxd;
986 u16 rate_info;
987
988 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
989 return -1;
990 rmb();
991
992 rate_info = le16_to_cpu(rxd->rate_info);
993
994 memset(status, 0, sizeof(*status));
995
996 status->signal = -rxd->rssi;
997 *noise = -rxd->noise_level;
998 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
999 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1000
1001 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1002 status->flag |= RX_FLAG_SHORTPRE;
1003 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1004 status->flag |= RX_FLAG_40MHZ;
1005 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1006 status->flag |= RX_FLAG_SHORT_GI;
1007 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1008 status->flag |= RX_FLAG_HT;
1009
1010 if (rxd->channel > 14) {
1011 status->band = IEEE80211_BAND_5GHZ;
1012 if (!(status->flag & RX_FLAG_HT))
1013 status->rate_idx -= 5;
1014 } else {
1015 status->band = IEEE80211_BAND_2GHZ;
1016 }
1017 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1018 status->band);
1019
1020 *qos = rxd->qos_control;
1021 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1022 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1023 status->flag |= RX_FLAG_MMIC_ERROR;
1024
1025 return le16_to_cpu(rxd->pkt_len);
1026 }
1027
1028 static struct rxd_ops rxd_sta_ops = {
1029 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1030 .rxd_init = mwl8k_rxd_sta_init,
1031 .rxd_refill = mwl8k_rxd_sta_refill,
1032 .rxd_process = mwl8k_rxd_sta_process,
1033 };
1034
1035
1036 #define MWL8K_RX_DESCS 256
1037 #define MWL8K_RX_MAXSZ 3800
1038
1039 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1040 {
1041 struct mwl8k_priv *priv = hw->priv;
1042 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1043 int size;
1044 int i;
1045
1046 rxq->rxd_count = 0;
1047 rxq->head = 0;
1048 rxq->tail = 0;
1049
1050 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1051
1052 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1053 if (rxq->rxd == NULL) {
1054 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1055 return -ENOMEM;
1056 }
1057 memset(rxq->rxd, 0, size);
1058
1059 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1060 if (rxq->buf == NULL) {
1061 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1062 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1063 return -ENOMEM;
1064 }
1065
1066 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1067 int desc_size;
1068 void *rxd;
1069 int nexti;
1070 dma_addr_t next_dma_addr;
1071
1072 desc_size = priv->rxd_ops->rxd_size;
1073 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1074
1075 nexti = i + 1;
1076 if (nexti == MWL8K_RX_DESCS)
1077 nexti = 0;
1078 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1079
1080 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1081 }
1082
1083 return 0;
1084 }
1085
1086 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1087 {
1088 struct mwl8k_priv *priv = hw->priv;
1089 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1090 int refilled;
1091
1092 refilled = 0;
1093 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1094 struct sk_buff *skb;
1095 dma_addr_t addr;
1096 int rx;
1097 void *rxd;
1098
1099 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1100 if (skb == NULL)
1101 break;
1102
1103 addr = pci_map_single(priv->pdev, skb->data,
1104 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1105
1106 rxq->rxd_count++;
1107 rx = rxq->tail++;
1108 if (rxq->tail == MWL8K_RX_DESCS)
1109 rxq->tail = 0;
1110 rxq->buf[rx].skb = skb;
1111 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1112
1113 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1114 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1115
1116 refilled++;
1117 }
1118
1119 return refilled;
1120 }
1121
1122 /* Must be called only when the card's reception is completely halted */
1123 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1124 {
1125 struct mwl8k_priv *priv = hw->priv;
1126 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1127 int i;
1128
1129 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1130 if (rxq->buf[i].skb != NULL) {
1131 pci_unmap_single(priv->pdev,
1132 dma_unmap_addr(&rxq->buf[i], dma),
1133 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1134 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1135
1136 kfree_skb(rxq->buf[i].skb);
1137 rxq->buf[i].skb = NULL;
1138 }
1139 }
1140
1141 kfree(rxq->buf);
1142 rxq->buf = NULL;
1143
1144 pci_free_consistent(priv->pdev,
1145 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1146 rxq->rxd, rxq->rxd_dma);
1147 rxq->rxd = NULL;
1148 }
1149
1150
1151 /*
1152 * Scan a list of BSSIDs to process for finalize join.
1153 * Allows for extension to process multiple BSSIDs.
1154 */
1155 static inline int
1156 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1157 {
1158 return priv->capture_beacon &&
1159 ieee80211_is_beacon(wh->frame_control) &&
1160 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1161 }
1162
1163 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1164 struct sk_buff *skb)
1165 {
1166 struct mwl8k_priv *priv = hw->priv;
1167
1168 priv->capture_beacon = false;
1169 memset(priv->capture_bssid, 0, ETH_ALEN);
1170
1171 /*
1172 * Use GFP_ATOMIC as rxq_process is called from
1173 * the primary interrupt handler, memory allocation call
1174 * must not sleep.
1175 */
1176 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1177 if (priv->beacon_skb != NULL)
1178 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1179 }
1180
1181 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1182 u8 *bssid)
1183 {
1184 struct mwl8k_vif *mwl8k_vif;
1185
1186 list_for_each_entry(mwl8k_vif,
1187 vif_list, list) {
1188 if (memcmp(bssid, mwl8k_vif->bssid,
1189 ETH_ALEN) == 0)
1190 return mwl8k_vif;
1191 }
1192
1193 return NULL;
1194 }
1195
1196 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1197 {
1198 struct mwl8k_priv *priv = hw->priv;
1199 struct mwl8k_vif *mwl8k_vif = NULL;
1200 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1201 int processed;
1202
1203 processed = 0;
1204 while (rxq->rxd_count && limit--) {
1205 struct sk_buff *skb;
1206 void *rxd;
1207 int pkt_len;
1208 struct ieee80211_rx_status status;
1209 struct ieee80211_hdr *wh;
1210 __le16 qos;
1211
1212 skb = rxq->buf[rxq->head].skb;
1213 if (skb == NULL)
1214 break;
1215
1216 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1217
1218 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1219 &priv->noise);
1220 if (pkt_len < 0)
1221 break;
1222
1223 rxq->buf[rxq->head].skb = NULL;
1224
1225 pci_unmap_single(priv->pdev,
1226 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1227 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1228 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1229
1230 rxq->head++;
1231 if (rxq->head == MWL8K_RX_DESCS)
1232 rxq->head = 0;
1233
1234 rxq->rxd_count--;
1235
1236 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1237
1238 /*
1239 * Check for a pending join operation. Save a
1240 * copy of the beacon and schedule a tasklet to
1241 * send a FINALIZE_JOIN command to the firmware.
1242 */
1243 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1244 mwl8k_save_beacon(hw, skb);
1245
1246 if (ieee80211_has_protected(wh->frame_control)) {
1247
1248 /* Check if hw crypto has been enabled for
1249 * this bss. If yes, set the status flags
1250 * accordingly
1251 */
1252 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1253 wh->addr1);
1254
1255 if (mwl8k_vif != NULL &&
1256 mwl8k_vif->is_hw_crypto_enabled == true) {
1257 /*
1258 * When MMIC ERROR is encountered
1259 * by the firmware, payload is
1260 * dropped and only 32 bytes of
1261 * mwl8k Firmware header is sent
1262 * to the host.
1263 *
1264 * We need to add four bytes of
1265 * key information. In it
1266 * MAC80211 expects keyidx set to
1267 * 0 for triggering Counter
1268 * Measure of MMIC failure.
1269 */
1270 if (status.flag & RX_FLAG_MMIC_ERROR) {
1271 struct mwl8k_dma_data *tr;
1272 tr = (struct mwl8k_dma_data *)skb->data;
1273 memset((void *)&(tr->data), 0, 4);
1274 pkt_len += 4;
1275 }
1276
1277 if (!ieee80211_is_auth(wh->frame_control))
1278 status.flag |= RX_FLAG_IV_STRIPPED |
1279 RX_FLAG_DECRYPTED |
1280 RX_FLAG_MMIC_STRIPPED;
1281 }
1282 }
1283
1284 skb_put(skb, pkt_len);
1285 mwl8k_remove_dma_header(skb, qos);
1286 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1287 ieee80211_rx_irqsafe(hw, skb);
1288
1289 processed++;
1290 }
1291
1292 return processed;
1293 }
1294
1295
1296 /*
1297 * Packet transmission.
1298 */
1299
1300 #define MWL8K_TXD_STATUS_OK 0x00000001
1301 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1302 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1303 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1304 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1305
1306 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1307 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1308 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1309 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1310 #define MWL8K_QOS_EOSP 0x0010
1311
1312 struct mwl8k_tx_desc {
1313 __le32 status;
1314 __u8 data_rate;
1315 __u8 tx_priority;
1316 __le16 qos_control;
1317 __le32 pkt_phys_addr;
1318 __le16 pkt_len;
1319 __u8 dest_MAC_addr[ETH_ALEN];
1320 __le32 next_txd_phys_addr;
1321 __le32 reserved;
1322 __le16 rate_info;
1323 __u8 peer_id;
1324 __u8 tx_frag_cnt;
1325 } __packed;
1326
1327 #define MWL8K_TX_DESCS 128
1328
1329 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1330 {
1331 struct mwl8k_priv *priv = hw->priv;
1332 struct mwl8k_tx_queue *txq = priv->txq + index;
1333 int size;
1334 int i;
1335
1336 txq->len = 0;
1337 txq->head = 0;
1338 txq->tail = 0;
1339
1340 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1341
1342 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1343 if (txq->txd == NULL) {
1344 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1345 return -ENOMEM;
1346 }
1347 memset(txq->txd, 0, size);
1348
1349 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1350 if (txq->skb == NULL) {
1351 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1352 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1353 return -ENOMEM;
1354 }
1355
1356 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1357 struct mwl8k_tx_desc *tx_desc;
1358 int nexti;
1359
1360 tx_desc = txq->txd + i;
1361 nexti = (i + 1) % MWL8K_TX_DESCS;
1362
1363 tx_desc->status = 0;
1364 tx_desc->next_txd_phys_addr =
1365 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1366 }
1367
1368 return 0;
1369 }
1370
1371 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1372 {
1373 iowrite32(MWL8K_H2A_INT_PPA_READY,
1374 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1375 iowrite32(MWL8K_H2A_INT_DUMMY,
1376 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1377 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1378 }
1379
1380 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1381 {
1382 struct mwl8k_priv *priv = hw->priv;
1383 int i;
1384
1385 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1386 struct mwl8k_tx_queue *txq = priv->txq + i;
1387 int fw_owned = 0;
1388 int drv_owned = 0;
1389 int unused = 0;
1390 int desc;
1391
1392 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1393 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1394 u32 status;
1395
1396 status = le32_to_cpu(tx_desc->status);
1397 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1398 fw_owned++;
1399 else
1400 drv_owned++;
1401
1402 if (tx_desc->pkt_len == 0)
1403 unused++;
1404 }
1405
1406 wiphy_err(hw->wiphy,
1407 "txq[%d] len=%d head=%d tail=%d "
1408 "fw_owned=%d drv_owned=%d unused=%d\n",
1409 i,
1410 txq->len, txq->head, txq->tail,
1411 fw_owned, drv_owned, unused);
1412 }
1413 }
1414
1415 /*
1416 * Must be called with priv->fw_mutex held and tx queues stopped.
1417 */
1418 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1419
1420 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1421 {
1422 struct mwl8k_priv *priv = hw->priv;
1423 DECLARE_COMPLETION_ONSTACK(tx_wait);
1424 int retry;
1425 int rc;
1426
1427 might_sleep();
1428
1429 /*
1430 * The TX queues are stopped at this point, so this test
1431 * doesn't need to take ->tx_lock.
1432 */
1433 if (!priv->pending_tx_pkts)
1434 return 0;
1435
1436 retry = 0;
1437 rc = 0;
1438
1439 spin_lock_bh(&priv->tx_lock);
1440 priv->tx_wait = &tx_wait;
1441 while (!rc) {
1442 int oldcount;
1443 unsigned long timeout;
1444
1445 oldcount = priv->pending_tx_pkts;
1446
1447 spin_unlock_bh(&priv->tx_lock);
1448 timeout = wait_for_completion_timeout(&tx_wait,
1449 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1450 spin_lock_bh(&priv->tx_lock);
1451
1452 if (timeout) {
1453 WARN_ON(priv->pending_tx_pkts);
1454 if (retry) {
1455 wiphy_notice(hw->wiphy, "tx rings drained\n");
1456 }
1457 break;
1458 }
1459
1460 if (priv->pending_tx_pkts < oldcount) {
1461 wiphy_notice(hw->wiphy,
1462 "waiting for tx rings to drain (%d -> %d pkts)\n",
1463 oldcount, priv->pending_tx_pkts);
1464 retry = 1;
1465 continue;
1466 }
1467
1468 priv->tx_wait = NULL;
1469
1470 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1471 MWL8K_TX_WAIT_TIMEOUT_MS);
1472 mwl8k_dump_tx_rings(hw);
1473
1474 rc = -ETIMEDOUT;
1475 }
1476 spin_unlock_bh(&priv->tx_lock);
1477
1478 return rc;
1479 }
1480
1481 #define MWL8K_TXD_SUCCESS(status) \
1482 ((status) & (MWL8K_TXD_STATUS_OK | \
1483 MWL8K_TXD_STATUS_OK_RETRY | \
1484 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1485
1486 static int
1487 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1488 {
1489 struct mwl8k_priv *priv = hw->priv;
1490 struct mwl8k_tx_queue *txq = priv->txq + index;
1491 int processed;
1492
1493 processed = 0;
1494 while (txq->len > 0 && limit--) {
1495 int tx;
1496 struct mwl8k_tx_desc *tx_desc;
1497 unsigned long addr;
1498 int size;
1499 struct sk_buff *skb;
1500 struct ieee80211_tx_info *info;
1501 u32 status;
1502
1503 tx = txq->head;
1504 tx_desc = txq->txd + tx;
1505
1506 status = le32_to_cpu(tx_desc->status);
1507
1508 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1509 if (!force)
1510 break;
1511 tx_desc->status &=
1512 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1513 }
1514
1515 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1516 BUG_ON(txq->len == 0);
1517 txq->len--;
1518 priv->pending_tx_pkts--;
1519
1520 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1521 size = le16_to_cpu(tx_desc->pkt_len);
1522 skb = txq->skb[tx];
1523 txq->skb[tx] = NULL;
1524
1525 BUG_ON(skb == NULL);
1526 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1527
1528 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1529
1530 /* Mark descriptor as unused */
1531 tx_desc->pkt_phys_addr = 0;
1532 tx_desc->pkt_len = 0;
1533
1534 info = IEEE80211_SKB_CB(skb);
1535 ieee80211_tx_info_clear_status(info);
1536
1537 /* Rate control is happening in the firmware.
1538 * Ensure no tx rate is being reported.
1539 */
1540 info->status.rates[0].idx = -1;
1541 info->status.rates[0].count = 1;
1542
1543 if (MWL8K_TXD_SUCCESS(status))
1544 info->flags |= IEEE80211_TX_STAT_ACK;
1545
1546 ieee80211_tx_status_irqsafe(hw, skb);
1547
1548 processed++;
1549 }
1550
1551 if (processed && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1552 ieee80211_wake_queue(hw, index);
1553
1554 return processed;
1555 }
1556
1557 /* must be called only when the card's transmit is completely halted */
1558 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1559 {
1560 struct mwl8k_priv *priv = hw->priv;
1561 struct mwl8k_tx_queue *txq = priv->txq + index;
1562
1563 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1564
1565 kfree(txq->skb);
1566 txq->skb = NULL;
1567
1568 pci_free_consistent(priv->pdev,
1569 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1570 txq->txd, txq->txd_dma);
1571 txq->txd = NULL;
1572 }
1573
1574 static void
1575 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1576 {
1577 struct mwl8k_priv *priv = hw->priv;
1578 struct ieee80211_tx_info *tx_info;
1579 struct mwl8k_vif *mwl8k_vif;
1580 struct ieee80211_hdr *wh;
1581 struct mwl8k_tx_queue *txq;
1582 struct mwl8k_tx_desc *tx;
1583 dma_addr_t dma;
1584 u32 txstatus;
1585 u8 txdatarate;
1586 u16 qos;
1587
1588 wh = (struct ieee80211_hdr *)skb->data;
1589 if (ieee80211_is_data_qos(wh->frame_control))
1590 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1591 else
1592 qos = 0;
1593
1594 if (priv->ap_fw)
1595 mwl8k_encapsulate_tx_frame(skb);
1596 else
1597 mwl8k_add_dma_header(skb, 0);
1598
1599 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1600
1601 tx_info = IEEE80211_SKB_CB(skb);
1602 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1603
1604 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1605 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1606 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1607 mwl8k_vif->seqno += 0x10;
1608 }
1609
1610 /* Setup firmware control bit fields for each frame type. */
1611 txstatus = 0;
1612 txdatarate = 0;
1613 if (ieee80211_is_mgmt(wh->frame_control) ||
1614 ieee80211_is_ctl(wh->frame_control)) {
1615 txdatarate = 0;
1616 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1617 } else if (ieee80211_is_data(wh->frame_control)) {
1618 txdatarate = 1;
1619 if (is_multicast_ether_addr(wh->addr1))
1620 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1621
1622 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1623 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1624 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1625 else
1626 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1627 }
1628
1629 dma = pci_map_single(priv->pdev, skb->data,
1630 skb->len, PCI_DMA_TODEVICE);
1631
1632 if (pci_dma_mapping_error(priv->pdev, dma)) {
1633 wiphy_debug(hw->wiphy,
1634 "failed to dma map skb, dropping TX frame.\n");
1635 dev_kfree_skb(skb);
1636 return;
1637 }
1638
1639 spin_lock_bh(&priv->tx_lock);
1640
1641 txq = priv->txq + index;
1642
1643 BUG_ON(txq->skb[txq->tail] != NULL);
1644 txq->skb[txq->tail] = skb;
1645
1646 tx = txq->txd + txq->tail;
1647 tx->data_rate = txdatarate;
1648 tx->tx_priority = index;
1649 tx->qos_control = cpu_to_le16(qos);
1650 tx->pkt_phys_addr = cpu_to_le32(dma);
1651 tx->pkt_len = cpu_to_le16(skb->len);
1652 tx->rate_info = 0;
1653 if (!priv->ap_fw && tx_info->control.sta != NULL)
1654 tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
1655 else
1656 tx->peer_id = 0;
1657 wmb();
1658 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1659
1660 txq->len++;
1661 priv->pending_tx_pkts++;
1662
1663 txq->tail++;
1664 if (txq->tail == MWL8K_TX_DESCS)
1665 txq->tail = 0;
1666
1667 if (txq->head == txq->tail)
1668 ieee80211_stop_queue(hw, index);
1669
1670 mwl8k_tx_start(priv);
1671
1672 spin_unlock_bh(&priv->tx_lock);
1673 }
1674
1675
1676 /*
1677 * Firmware access.
1678 *
1679 * We have the following requirements for issuing firmware commands:
1680 * - Some commands require that the packet transmit path is idle when
1681 * the command is issued. (For simplicity, we'll just quiesce the
1682 * transmit path for every command.)
1683 * - There are certain sequences of commands that need to be issued to
1684 * the hardware sequentially, with no other intervening commands.
1685 *
1686 * This leads to an implementation of a "firmware lock" as a mutex that
1687 * can be taken recursively, and which is taken by both the low-level
1688 * command submission function (mwl8k_post_cmd) as well as any users of
1689 * that function that require issuing of an atomic sequence of commands,
1690 * and quiesces the transmit path whenever it's taken.
1691 */
1692 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1693 {
1694 struct mwl8k_priv *priv = hw->priv;
1695
1696 if (priv->fw_mutex_owner != current) {
1697 int rc;
1698
1699 mutex_lock(&priv->fw_mutex);
1700 ieee80211_stop_queues(hw);
1701
1702 rc = mwl8k_tx_wait_empty(hw);
1703 if (rc) {
1704 ieee80211_wake_queues(hw);
1705 mutex_unlock(&priv->fw_mutex);
1706
1707 return rc;
1708 }
1709
1710 priv->fw_mutex_owner = current;
1711 }
1712
1713 priv->fw_mutex_depth++;
1714
1715 return 0;
1716 }
1717
1718 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1719 {
1720 struct mwl8k_priv *priv = hw->priv;
1721
1722 if (!--priv->fw_mutex_depth) {
1723 ieee80211_wake_queues(hw);
1724 priv->fw_mutex_owner = NULL;
1725 mutex_unlock(&priv->fw_mutex);
1726 }
1727 }
1728
1729
1730 /*
1731 * Command processing.
1732 */
1733
1734 /* Timeout firmware commands after 10s */
1735 #define MWL8K_CMD_TIMEOUT_MS 10000
1736
1737 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1738 {
1739 DECLARE_COMPLETION_ONSTACK(cmd_wait);
1740 struct mwl8k_priv *priv = hw->priv;
1741 void __iomem *regs = priv->regs;
1742 dma_addr_t dma_addr;
1743 unsigned int dma_size;
1744 int rc;
1745 unsigned long timeout = 0;
1746 u8 buf[32];
1747
1748 cmd->result = (__force __le16) 0xffff;
1749 dma_size = le16_to_cpu(cmd->length);
1750 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1751 PCI_DMA_BIDIRECTIONAL);
1752 if (pci_dma_mapping_error(priv->pdev, dma_addr))
1753 return -ENOMEM;
1754
1755 rc = mwl8k_fw_lock(hw);
1756 if (rc) {
1757 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1758 PCI_DMA_BIDIRECTIONAL);
1759 return rc;
1760 }
1761
1762 priv->hostcmd_wait = &cmd_wait;
1763 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1764 iowrite32(MWL8K_H2A_INT_DOORBELL,
1765 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1766 iowrite32(MWL8K_H2A_INT_DUMMY,
1767 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1768
1769 timeout = wait_for_completion_timeout(&cmd_wait,
1770 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1771
1772 priv->hostcmd_wait = NULL;
1773
1774 mwl8k_fw_unlock(hw);
1775
1776 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1777 PCI_DMA_BIDIRECTIONAL);
1778
1779 if (!timeout) {
1780 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
1781 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1782 MWL8K_CMD_TIMEOUT_MS);
1783 rc = -ETIMEDOUT;
1784 } else {
1785 int ms;
1786
1787 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1788
1789 rc = cmd->result ? -EINVAL : 0;
1790 if (rc)
1791 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
1792 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1793 le16_to_cpu(cmd->result));
1794 else if (ms > 2000)
1795 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
1796 mwl8k_cmd_name(cmd->code,
1797 buf, sizeof(buf)),
1798 ms);
1799 }
1800
1801 return rc;
1802 }
1803
1804 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
1805 struct ieee80211_vif *vif,
1806 struct mwl8k_cmd_pkt *cmd)
1807 {
1808 if (vif != NULL)
1809 cmd->macid = MWL8K_VIF(vif)->macid;
1810 return mwl8k_post_cmd(hw, cmd);
1811 }
1812
1813 /*
1814 * Setup code shared between STA and AP firmware images.
1815 */
1816 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
1817 {
1818 struct mwl8k_priv *priv = hw->priv;
1819
1820 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
1821 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
1822
1823 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
1824 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
1825
1826 priv->band_24.band = IEEE80211_BAND_2GHZ;
1827 priv->band_24.channels = priv->channels_24;
1828 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
1829 priv->band_24.bitrates = priv->rates_24;
1830 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
1831
1832 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
1833 }
1834
1835 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
1836 {
1837 struct mwl8k_priv *priv = hw->priv;
1838
1839 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
1840 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
1841
1842 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
1843 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
1844
1845 priv->band_50.band = IEEE80211_BAND_5GHZ;
1846 priv->band_50.channels = priv->channels_50;
1847 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
1848 priv->band_50.bitrates = priv->rates_50;
1849 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
1850
1851 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
1852 }
1853
1854 /*
1855 * CMD_GET_HW_SPEC (STA version).
1856 */
1857 struct mwl8k_cmd_get_hw_spec_sta {
1858 struct mwl8k_cmd_pkt header;
1859 __u8 hw_rev;
1860 __u8 host_interface;
1861 __le16 num_mcaddrs;
1862 __u8 perm_addr[ETH_ALEN];
1863 __le16 region_code;
1864 __le32 fw_rev;
1865 __le32 ps_cookie;
1866 __le32 caps;
1867 __u8 mcs_bitmap[16];
1868 __le32 rx_queue_ptr;
1869 __le32 num_tx_queues;
1870 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1871 __le32 caps2;
1872 __le32 num_tx_desc_per_queue;
1873 __le32 total_rxd;
1874 } __packed;
1875
1876 #define MWL8K_CAP_MAX_AMSDU 0x20000000
1877 #define MWL8K_CAP_GREENFIELD 0x08000000
1878 #define MWL8K_CAP_AMPDU 0x04000000
1879 #define MWL8K_CAP_RX_STBC 0x01000000
1880 #define MWL8K_CAP_TX_STBC 0x00800000
1881 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
1882 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
1883 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
1884 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
1885 #define MWL8K_CAP_DELAY_BA 0x00003000
1886 #define MWL8K_CAP_MIMO 0x00000200
1887 #define MWL8K_CAP_40MHZ 0x00000100
1888 #define MWL8K_CAP_BAND_MASK 0x00000007
1889 #define MWL8K_CAP_5GHZ 0x00000004
1890 #define MWL8K_CAP_2GHZ4 0x00000001
1891
1892 static void
1893 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
1894 struct ieee80211_supported_band *band, u32 cap)
1895 {
1896 int rx_streams;
1897 int tx_streams;
1898
1899 band->ht_cap.ht_supported = 1;
1900
1901 if (cap & MWL8K_CAP_MAX_AMSDU)
1902 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1903 if (cap & MWL8K_CAP_GREENFIELD)
1904 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
1905 if (cap & MWL8K_CAP_AMPDU) {
1906 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
1907 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
1908 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1909 }
1910 if (cap & MWL8K_CAP_RX_STBC)
1911 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
1912 if (cap & MWL8K_CAP_TX_STBC)
1913 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
1914 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
1915 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
1916 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
1917 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
1918 if (cap & MWL8K_CAP_DELAY_BA)
1919 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
1920 if (cap & MWL8K_CAP_40MHZ)
1921 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1922
1923 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
1924 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
1925
1926 band->ht_cap.mcs.rx_mask[0] = 0xff;
1927 if (rx_streams >= 2)
1928 band->ht_cap.mcs.rx_mask[1] = 0xff;
1929 if (rx_streams >= 3)
1930 band->ht_cap.mcs.rx_mask[2] = 0xff;
1931 band->ht_cap.mcs.rx_mask[4] = 0x01;
1932 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1933
1934 if (rx_streams != tx_streams) {
1935 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1936 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
1937 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
1938 }
1939 }
1940
1941 static void
1942 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
1943 {
1944 struct mwl8k_priv *priv = hw->priv;
1945
1946 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
1947 mwl8k_setup_2ghz_band(hw);
1948 if (caps & MWL8K_CAP_MIMO)
1949 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
1950 }
1951
1952 if (caps & MWL8K_CAP_5GHZ) {
1953 mwl8k_setup_5ghz_band(hw);
1954 if (caps & MWL8K_CAP_MIMO)
1955 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
1956 }
1957 }
1958
1959 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1960 {
1961 struct mwl8k_priv *priv = hw->priv;
1962 struct mwl8k_cmd_get_hw_spec_sta *cmd;
1963 int rc;
1964 int i;
1965
1966 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1967 if (cmd == NULL)
1968 return -ENOMEM;
1969
1970 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1971 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1972
1973 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1974 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1975 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1976 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1977 for (i = 0; i < MWL8K_TX_QUEUES; i++)
1978 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1979 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1980 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1981
1982 rc = mwl8k_post_cmd(hw, &cmd->header);
1983
1984 if (!rc) {
1985 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1986 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1987 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1988 priv->hw_rev = cmd->hw_rev;
1989 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
1990 priv->ap_macids_supported = 0x00000000;
1991 priv->sta_macids_supported = 0x00000001;
1992 }
1993
1994 kfree(cmd);
1995 return rc;
1996 }
1997
1998 /*
1999 * CMD_GET_HW_SPEC (AP version).
2000 */
2001 struct mwl8k_cmd_get_hw_spec_ap {
2002 struct mwl8k_cmd_pkt header;
2003 __u8 hw_rev;
2004 __u8 host_interface;
2005 __le16 num_wcb;
2006 __le16 num_mcaddrs;
2007 __u8 perm_addr[ETH_ALEN];
2008 __le16 region_code;
2009 __le16 num_antenna;
2010 __le32 fw_rev;
2011 __le32 wcbbase0;
2012 __le32 rxwrptr;
2013 __le32 rxrdptr;
2014 __le32 ps_cookie;
2015 __le32 wcbbase1;
2016 __le32 wcbbase2;
2017 __le32 wcbbase3;
2018 __le32 fw_api_version;
2019 } __packed;
2020
2021 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2022 {
2023 struct mwl8k_priv *priv = hw->priv;
2024 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2025 int rc;
2026 u32 api_version;
2027
2028 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2029 if (cmd == NULL)
2030 return -ENOMEM;
2031
2032 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2033 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2034
2035 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2036 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2037
2038 rc = mwl8k_post_cmd(hw, &cmd->header);
2039
2040 if (!rc) {
2041 int off;
2042
2043 api_version = le32_to_cpu(cmd->fw_api_version);
2044 if (priv->device_info->fw_api_ap != api_version) {
2045 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2046 " Expected %d got %d.\n", MWL8K_NAME,
2047 priv->device_info->part_name,
2048 priv->device_info->fw_api_ap,
2049 api_version);
2050 rc = -EINVAL;
2051 goto done;
2052 }
2053 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2054 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2055 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2056 priv->hw_rev = cmd->hw_rev;
2057 mwl8k_setup_2ghz_band(hw);
2058 priv->ap_macids_supported = 0x000000ff;
2059 priv->sta_macids_supported = 0x00000000;
2060
2061 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2062 iowrite32(priv->txq[0].txd_dma, priv->sram + off);
2063
2064 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2065 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2066
2067 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2068 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2069
2070 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2071 iowrite32(priv->txq[1].txd_dma, priv->sram + off);
2072
2073 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2074 iowrite32(priv->txq[2].txd_dma, priv->sram + off);
2075
2076 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2077 iowrite32(priv->txq[3].txd_dma, priv->sram + off);
2078 }
2079
2080 done:
2081 kfree(cmd);
2082 return rc;
2083 }
2084
2085 /*
2086 * CMD_SET_HW_SPEC.
2087 */
2088 struct mwl8k_cmd_set_hw_spec {
2089 struct mwl8k_cmd_pkt header;
2090 __u8 hw_rev;
2091 __u8 host_interface;
2092 __le16 num_mcaddrs;
2093 __u8 perm_addr[ETH_ALEN];
2094 __le16 region_code;
2095 __le32 fw_rev;
2096 __le32 ps_cookie;
2097 __le32 caps;
2098 __le32 rx_queue_ptr;
2099 __le32 num_tx_queues;
2100 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
2101 __le32 flags;
2102 __le32 num_tx_desc_per_queue;
2103 __le32 total_rxd;
2104 } __packed;
2105
2106 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2107 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2108 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2109
2110 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2111 {
2112 struct mwl8k_priv *priv = hw->priv;
2113 struct mwl8k_cmd_set_hw_spec *cmd;
2114 int rc;
2115 int i;
2116
2117 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2118 if (cmd == NULL)
2119 return -ENOMEM;
2120
2121 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2122 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2123
2124 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2125 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2126 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
2127
2128 /*
2129 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2130 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2131 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2132 * priority is interpreted the right way in firmware.
2133 */
2134 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
2135 int j = MWL8K_TX_QUEUES - 1 - i;
2136 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2137 }
2138
2139 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2140 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2141 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON);
2142 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2143 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2144
2145 rc = mwl8k_post_cmd(hw, &cmd->header);
2146 kfree(cmd);
2147
2148 return rc;
2149 }
2150
2151 /*
2152 * CMD_MAC_MULTICAST_ADR.
2153 */
2154 struct mwl8k_cmd_mac_multicast_adr {
2155 struct mwl8k_cmd_pkt header;
2156 __le16 action;
2157 __le16 numaddr;
2158 __u8 addr[0][ETH_ALEN];
2159 };
2160
2161 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2162 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2163 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2164 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2165
2166 static struct mwl8k_cmd_pkt *
2167 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2168 struct netdev_hw_addr_list *mc_list)
2169 {
2170 struct mwl8k_priv *priv = hw->priv;
2171 struct mwl8k_cmd_mac_multicast_adr *cmd;
2172 int size;
2173 int mc_count = 0;
2174
2175 if (mc_list)
2176 mc_count = netdev_hw_addr_list_count(mc_list);
2177
2178 if (allmulti || mc_count > priv->num_mcaddrs) {
2179 allmulti = 1;
2180 mc_count = 0;
2181 }
2182
2183 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2184
2185 cmd = kzalloc(size, GFP_ATOMIC);
2186 if (cmd == NULL)
2187 return NULL;
2188
2189 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2190 cmd->header.length = cpu_to_le16(size);
2191 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2192 MWL8K_ENABLE_RX_BROADCAST);
2193
2194 if (allmulti) {
2195 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2196 } else if (mc_count) {
2197 struct netdev_hw_addr *ha;
2198 int i = 0;
2199
2200 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2201 cmd->numaddr = cpu_to_le16(mc_count);
2202 netdev_hw_addr_list_for_each(ha, mc_list) {
2203 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2204 }
2205 }
2206
2207 return &cmd->header;
2208 }
2209
2210 /*
2211 * CMD_GET_STAT.
2212 */
2213 struct mwl8k_cmd_get_stat {
2214 struct mwl8k_cmd_pkt header;
2215 __le32 stats[64];
2216 } __packed;
2217
2218 #define MWL8K_STAT_ACK_FAILURE 9
2219 #define MWL8K_STAT_RTS_FAILURE 12
2220 #define MWL8K_STAT_FCS_ERROR 24
2221 #define MWL8K_STAT_RTS_SUCCESS 11
2222
2223 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2224 struct ieee80211_low_level_stats *stats)
2225 {
2226 struct mwl8k_cmd_get_stat *cmd;
2227 int rc;
2228
2229 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2230 if (cmd == NULL)
2231 return -ENOMEM;
2232
2233 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2234 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2235
2236 rc = mwl8k_post_cmd(hw, &cmd->header);
2237 if (!rc) {
2238 stats->dot11ACKFailureCount =
2239 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2240 stats->dot11RTSFailureCount =
2241 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2242 stats->dot11FCSErrorCount =
2243 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2244 stats->dot11RTSSuccessCount =
2245 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2246 }
2247 kfree(cmd);
2248
2249 return rc;
2250 }
2251
2252 /*
2253 * CMD_RADIO_CONTROL.
2254 */
2255 struct mwl8k_cmd_radio_control {
2256 struct mwl8k_cmd_pkt header;
2257 __le16 action;
2258 __le16 control;
2259 __le16 radio_on;
2260 } __packed;
2261
2262 static int
2263 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2264 {
2265 struct mwl8k_priv *priv = hw->priv;
2266 struct mwl8k_cmd_radio_control *cmd;
2267 int rc;
2268
2269 if (enable == priv->radio_on && !force)
2270 return 0;
2271
2272 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2273 if (cmd == NULL)
2274 return -ENOMEM;
2275
2276 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2277 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2278 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2279 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2280 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2281
2282 rc = mwl8k_post_cmd(hw, &cmd->header);
2283 kfree(cmd);
2284
2285 if (!rc)
2286 priv->radio_on = enable;
2287
2288 return rc;
2289 }
2290
2291 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2292 {
2293 return mwl8k_cmd_radio_control(hw, 0, 0);
2294 }
2295
2296 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2297 {
2298 return mwl8k_cmd_radio_control(hw, 1, 0);
2299 }
2300
2301 static int
2302 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2303 {
2304 struct mwl8k_priv *priv = hw->priv;
2305
2306 priv->radio_short_preamble = short_preamble;
2307
2308 return mwl8k_cmd_radio_control(hw, 1, 1);
2309 }
2310
2311 /*
2312 * CMD_RF_TX_POWER.
2313 */
2314 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2315
2316 struct mwl8k_cmd_rf_tx_power {
2317 struct mwl8k_cmd_pkt header;
2318 __le16 action;
2319 __le16 support_level;
2320 __le16 current_level;
2321 __le16 reserved;
2322 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2323 } __packed;
2324
2325 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2326 {
2327 struct mwl8k_cmd_rf_tx_power *cmd;
2328 int rc;
2329
2330 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2331 if (cmd == NULL)
2332 return -ENOMEM;
2333
2334 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2335 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2336 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2337 cmd->support_level = cpu_to_le16(dBm);
2338
2339 rc = mwl8k_post_cmd(hw, &cmd->header);
2340 kfree(cmd);
2341
2342 return rc;
2343 }
2344
2345 /*
2346 * CMD_TX_POWER.
2347 */
2348 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2349
2350 struct mwl8k_cmd_tx_power {
2351 struct mwl8k_cmd_pkt header;
2352 __le16 action;
2353 __le16 band;
2354 __le16 channel;
2355 __le16 bw;
2356 __le16 sub_ch;
2357 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2358 } __attribute__((packed));
2359
2360 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2361 struct ieee80211_conf *conf,
2362 unsigned short pwr)
2363 {
2364 struct ieee80211_channel *channel = conf->channel;
2365 struct mwl8k_cmd_tx_power *cmd;
2366 int rc;
2367 int i;
2368
2369 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2370 if (cmd == NULL)
2371 return -ENOMEM;
2372
2373 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2374 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2375 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2376
2377 if (channel->band == IEEE80211_BAND_2GHZ)
2378 cmd->band = cpu_to_le16(0x1);
2379 else if (channel->band == IEEE80211_BAND_5GHZ)
2380 cmd->band = cpu_to_le16(0x4);
2381
2382 cmd->channel = channel->hw_value;
2383
2384 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2385 conf->channel_type == NL80211_CHAN_HT20) {
2386 cmd->bw = cpu_to_le16(0x2);
2387 } else {
2388 cmd->bw = cpu_to_le16(0x4);
2389 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2390 cmd->sub_ch = cpu_to_le16(0x3);
2391 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2392 cmd->sub_ch = cpu_to_le16(0x1);
2393 }
2394
2395 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2396 cmd->power_level_list[i] = cpu_to_le16(pwr);
2397
2398 rc = mwl8k_post_cmd(hw, &cmd->header);
2399 kfree(cmd);
2400
2401 return rc;
2402 }
2403
2404 /*
2405 * CMD_RF_ANTENNA.
2406 */
2407 struct mwl8k_cmd_rf_antenna {
2408 struct mwl8k_cmd_pkt header;
2409 __le16 antenna;
2410 __le16 mode;
2411 } __packed;
2412
2413 #define MWL8K_RF_ANTENNA_RX 1
2414 #define MWL8K_RF_ANTENNA_TX 2
2415
2416 static int
2417 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2418 {
2419 struct mwl8k_cmd_rf_antenna *cmd;
2420 int rc;
2421
2422 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2423 if (cmd == NULL)
2424 return -ENOMEM;
2425
2426 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2427 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2428 cmd->antenna = cpu_to_le16(antenna);
2429 cmd->mode = cpu_to_le16(mask);
2430
2431 rc = mwl8k_post_cmd(hw, &cmd->header);
2432 kfree(cmd);
2433
2434 return rc;
2435 }
2436
2437 /*
2438 * CMD_SET_BEACON.
2439 */
2440 struct mwl8k_cmd_set_beacon {
2441 struct mwl8k_cmd_pkt header;
2442 __le16 beacon_len;
2443 __u8 beacon[0];
2444 };
2445
2446 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2447 struct ieee80211_vif *vif, u8 *beacon, int len)
2448 {
2449 struct mwl8k_cmd_set_beacon *cmd;
2450 int rc;
2451
2452 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2453 if (cmd == NULL)
2454 return -ENOMEM;
2455
2456 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2457 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2458 cmd->beacon_len = cpu_to_le16(len);
2459 memcpy(cmd->beacon, beacon, len);
2460
2461 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2462 kfree(cmd);
2463
2464 return rc;
2465 }
2466
2467 /*
2468 * CMD_SET_PRE_SCAN.
2469 */
2470 struct mwl8k_cmd_set_pre_scan {
2471 struct mwl8k_cmd_pkt header;
2472 } __packed;
2473
2474 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2475 {
2476 struct mwl8k_cmd_set_pre_scan *cmd;
2477 int rc;
2478
2479 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2480 if (cmd == NULL)
2481 return -ENOMEM;
2482
2483 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2484 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2485
2486 rc = mwl8k_post_cmd(hw, &cmd->header);
2487 kfree(cmd);
2488
2489 return rc;
2490 }
2491
2492 /*
2493 * CMD_SET_POST_SCAN.
2494 */
2495 struct mwl8k_cmd_set_post_scan {
2496 struct mwl8k_cmd_pkt header;
2497 __le32 isibss;
2498 __u8 bssid[ETH_ALEN];
2499 } __packed;
2500
2501 static int
2502 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2503 {
2504 struct mwl8k_cmd_set_post_scan *cmd;
2505 int rc;
2506
2507 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2508 if (cmd == NULL)
2509 return -ENOMEM;
2510
2511 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2512 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2513 cmd->isibss = 0;
2514 memcpy(cmd->bssid, mac, ETH_ALEN);
2515
2516 rc = mwl8k_post_cmd(hw, &cmd->header);
2517 kfree(cmd);
2518
2519 return rc;
2520 }
2521
2522 /*
2523 * CMD_SET_RF_CHANNEL.
2524 */
2525 struct mwl8k_cmd_set_rf_channel {
2526 struct mwl8k_cmd_pkt header;
2527 __le16 action;
2528 __u8 current_channel;
2529 __le32 channel_flags;
2530 } __packed;
2531
2532 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2533 struct ieee80211_conf *conf)
2534 {
2535 struct ieee80211_channel *channel = conf->channel;
2536 struct mwl8k_cmd_set_rf_channel *cmd;
2537 int rc;
2538
2539 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2540 if (cmd == NULL)
2541 return -ENOMEM;
2542
2543 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2544 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2545 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2546 cmd->current_channel = channel->hw_value;
2547
2548 if (channel->band == IEEE80211_BAND_2GHZ)
2549 cmd->channel_flags |= cpu_to_le32(0x00000001);
2550 else if (channel->band == IEEE80211_BAND_5GHZ)
2551 cmd->channel_flags |= cpu_to_le32(0x00000004);
2552
2553 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2554 conf->channel_type == NL80211_CHAN_HT20)
2555 cmd->channel_flags |= cpu_to_le32(0x00000080);
2556 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2557 cmd->channel_flags |= cpu_to_le32(0x000001900);
2558 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2559 cmd->channel_flags |= cpu_to_le32(0x000000900);
2560
2561 rc = mwl8k_post_cmd(hw, &cmd->header);
2562 kfree(cmd);
2563
2564 return rc;
2565 }
2566
2567 /*
2568 * CMD_SET_AID.
2569 */
2570 #define MWL8K_FRAME_PROT_DISABLED 0x00
2571 #define MWL8K_FRAME_PROT_11G 0x07
2572 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2573 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2574
2575 struct mwl8k_cmd_update_set_aid {
2576 struct mwl8k_cmd_pkt header;
2577 __le16 aid;
2578
2579 /* AP's MAC address (BSSID) */
2580 __u8 bssid[ETH_ALEN];
2581 __le16 protection_mode;
2582 __u8 supp_rates[14];
2583 } __packed;
2584
2585 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2586 {
2587 int i;
2588 int j;
2589
2590 /*
2591 * Clear nonstandard rates 4 and 13.
2592 */
2593 mask &= 0x1fef;
2594
2595 for (i = 0, j = 0; i < 14; i++) {
2596 if (mask & (1 << i))
2597 rates[j++] = mwl8k_rates_24[i].hw_value;
2598 }
2599 }
2600
2601 static int
2602 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2603 struct ieee80211_vif *vif, u32 legacy_rate_mask)
2604 {
2605 struct mwl8k_cmd_update_set_aid *cmd;
2606 u16 prot_mode;
2607 int rc;
2608
2609 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2610 if (cmd == NULL)
2611 return -ENOMEM;
2612
2613 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2614 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2615 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2616 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
2617
2618 if (vif->bss_conf.use_cts_prot) {
2619 prot_mode = MWL8K_FRAME_PROT_11G;
2620 } else {
2621 switch (vif->bss_conf.ht_operation_mode &
2622 IEEE80211_HT_OP_MODE_PROTECTION) {
2623 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2624 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2625 break;
2626 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2627 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2628 break;
2629 default:
2630 prot_mode = MWL8K_FRAME_PROT_DISABLED;
2631 break;
2632 }
2633 }
2634 cmd->protection_mode = cpu_to_le16(prot_mode);
2635
2636 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
2637
2638 rc = mwl8k_post_cmd(hw, &cmd->header);
2639 kfree(cmd);
2640
2641 return rc;
2642 }
2643
2644 /*
2645 * CMD_SET_RATE.
2646 */
2647 struct mwl8k_cmd_set_rate {
2648 struct mwl8k_cmd_pkt header;
2649 __u8 legacy_rates[14];
2650
2651 /* Bitmap for supported MCS codes. */
2652 __u8 mcs_set[16];
2653 __u8 reserved[16];
2654 } __packed;
2655
2656 static int
2657 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2658 u32 legacy_rate_mask, u8 *mcs_rates)
2659 {
2660 struct mwl8k_cmd_set_rate *cmd;
2661 int rc;
2662
2663 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2664 if (cmd == NULL)
2665 return -ENOMEM;
2666
2667 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2668 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2669 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
2670 memcpy(cmd->mcs_set, mcs_rates, 16);
2671
2672 rc = mwl8k_post_cmd(hw, &cmd->header);
2673 kfree(cmd);
2674
2675 return rc;
2676 }
2677
2678 /*
2679 * CMD_FINALIZE_JOIN.
2680 */
2681 #define MWL8K_FJ_BEACON_MAXLEN 128
2682
2683 struct mwl8k_cmd_finalize_join {
2684 struct mwl8k_cmd_pkt header;
2685 __le32 sleep_interval; /* Number of beacon periods to sleep */
2686 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2687 } __packed;
2688
2689 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2690 int framelen, int dtim)
2691 {
2692 struct mwl8k_cmd_finalize_join *cmd;
2693 struct ieee80211_mgmt *payload = frame;
2694 int payload_len;
2695 int rc;
2696
2697 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2698 if (cmd == NULL)
2699 return -ENOMEM;
2700
2701 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2702 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2703 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2704
2705 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2706 if (payload_len < 0)
2707 payload_len = 0;
2708 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2709 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2710
2711 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2712
2713 rc = mwl8k_post_cmd(hw, &cmd->header);
2714 kfree(cmd);
2715
2716 return rc;
2717 }
2718
2719 /*
2720 * CMD_SET_RTS_THRESHOLD.
2721 */
2722 struct mwl8k_cmd_set_rts_threshold {
2723 struct mwl8k_cmd_pkt header;
2724 __le16 action;
2725 __le16 threshold;
2726 } __packed;
2727
2728 static int
2729 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
2730 {
2731 struct mwl8k_cmd_set_rts_threshold *cmd;
2732 int rc;
2733
2734 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2735 if (cmd == NULL)
2736 return -ENOMEM;
2737
2738 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2739 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2740 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2741 cmd->threshold = cpu_to_le16(rts_thresh);
2742
2743 rc = mwl8k_post_cmd(hw, &cmd->header);
2744 kfree(cmd);
2745
2746 return rc;
2747 }
2748
2749 /*
2750 * CMD_SET_SLOT.
2751 */
2752 struct mwl8k_cmd_set_slot {
2753 struct mwl8k_cmd_pkt header;
2754 __le16 action;
2755 __u8 short_slot;
2756 } __packed;
2757
2758 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2759 {
2760 struct mwl8k_cmd_set_slot *cmd;
2761 int rc;
2762
2763 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2764 if (cmd == NULL)
2765 return -ENOMEM;
2766
2767 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2768 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2769 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2770 cmd->short_slot = short_slot_time;
2771
2772 rc = mwl8k_post_cmd(hw, &cmd->header);
2773 kfree(cmd);
2774
2775 return rc;
2776 }
2777
2778 /*
2779 * CMD_SET_EDCA_PARAMS.
2780 */
2781 struct mwl8k_cmd_set_edca_params {
2782 struct mwl8k_cmd_pkt header;
2783
2784 /* See MWL8K_SET_EDCA_XXX below */
2785 __le16 action;
2786
2787 /* TX opportunity in units of 32 us */
2788 __le16 txop;
2789
2790 union {
2791 struct {
2792 /* Log exponent of max contention period: 0...15 */
2793 __le32 log_cw_max;
2794
2795 /* Log exponent of min contention period: 0...15 */
2796 __le32 log_cw_min;
2797
2798 /* Adaptive interframe spacing in units of 32us */
2799 __u8 aifs;
2800
2801 /* TX queue to configure */
2802 __u8 txq;
2803 } ap;
2804 struct {
2805 /* Log exponent of max contention period: 0...15 */
2806 __u8 log_cw_max;
2807
2808 /* Log exponent of min contention period: 0...15 */
2809 __u8 log_cw_min;
2810
2811 /* Adaptive interframe spacing in units of 32us */
2812 __u8 aifs;
2813
2814 /* TX queue to configure */
2815 __u8 txq;
2816 } sta;
2817 };
2818 } __packed;
2819
2820 #define MWL8K_SET_EDCA_CW 0x01
2821 #define MWL8K_SET_EDCA_TXOP 0x02
2822 #define MWL8K_SET_EDCA_AIFS 0x04
2823
2824 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2825 MWL8K_SET_EDCA_TXOP | \
2826 MWL8K_SET_EDCA_AIFS)
2827
2828 static int
2829 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2830 __u16 cw_min, __u16 cw_max,
2831 __u8 aifs, __u16 txop)
2832 {
2833 struct mwl8k_priv *priv = hw->priv;
2834 struct mwl8k_cmd_set_edca_params *cmd;
2835 int rc;
2836
2837 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2838 if (cmd == NULL)
2839 return -ENOMEM;
2840
2841 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2842 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2843 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2844 cmd->txop = cpu_to_le16(txop);
2845 if (priv->ap_fw) {
2846 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2847 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2848 cmd->ap.aifs = aifs;
2849 cmd->ap.txq = qnum;
2850 } else {
2851 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2852 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2853 cmd->sta.aifs = aifs;
2854 cmd->sta.txq = qnum;
2855 }
2856
2857 rc = mwl8k_post_cmd(hw, &cmd->header);
2858 kfree(cmd);
2859
2860 return rc;
2861 }
2862
2863 /*
2864 * CMD_SET_WMM_MODE.
2865 */
2866 struct mwl8k_cmd_set_wmm_mode {
2867 struct mwl8k_cmd_pkt header;
2868 __le16 action;
2869 } __packed;
2870
2871 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2872 {
2873 struct mwl8k_priv *priv = hw->priv;
2874 struct mwl8k_cmd_set_wmm_mode *cmd;
2875 int rc;
2876
2877 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2878 if (cmd == NULL)
2879 return -ENOMEM;
2880
2881 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2882 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2883 cmd->action = cpu_to_le16(!!enable);
2884
2885 rc = mwl8k_post_cmd(hw, &cmd->header);
2886 kfree(cmd);
2887
2888 if (!rc)
2889 priv->wmm_enabled = enable;
2890
2891 return rc;
2892 }
2893
2894 /*
2895 * CMD_MIMO_CONFIG.
2896 */
2897 struct mwl8k_cmd_mimo_config {
2898 struct mwl8k_cmd_pkt header;
2899 __le32 action;
2900 __u8 rx_antenna_map;
2901 __u8 tx_antenna_map;
2902 } __packed;
2903
2904 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2905 {
2906 struct mwl8k_cmd_mimo_config *cmd;
2907 int rc;
2908
2909 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2910 if (cmd == NULL)
2911 return -ENOMEM;
2912
2913 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2914 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2915 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2916 cmd->rx_antenna_map = rx;
2917 cmd->tx_antenna_map = tx;
2918
2919 rc = mwl8k_post_cmd(hw, &cmd->header);
2920 kfree(cmd);
2921
2922 return rc;
2923 }
2924
2925 /*
2926 * CMD_USE_FIXED_RATE (STA version).
2927 */
2928 struct mwl8k_cmd_use_fixed_rate_sta {
2929 struct mwl8k_cmd_pkt header;
2930 __le32 action;
2931 __le32 allow_rate_drop;
2932 __le32 num_rates;
2933 struct {
2934 __le32 is_ht_rate;
2935 __le32 enable_retry;
2936 __le32 rate;
2937 __le32 retry_count;
2938 } rate_entry[8];
2939 __le32 rate_type;
2940 __le32 reserved1;
2941 __le32 reserved2;
2942 } __packed;
2943
2944 #define MWL8K_USE_AUTO_RATE 0x0002
2945 #define MWL8K_UCAST_RATE 0
2946
2947 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
2948 {
2949 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
2950 int rc;
2951
2952 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2953 if (cmd == NULL)
2954 return -ENOMEM;
2955
2956 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2957 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2958 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2959 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
2960
2961 rc = mwl8k_post_cmd(hw, &cmd->header);
2962 kfree(cmd);
2963
2964 return rc;
2965 }
2966
2967 /*
2968 * CMD_USE_FIXED_RATE (AP version).
2969 */
2970 struct mwl8k_cmd_use_fixed_rate_ap {
2971 struct mwl8k_cmd_pkt header;
2972 __le32 action;
2973 __le32 allow_rate_drop;
2974 __le32 num_rates;
2975 struct mwl8k_rate_entry_ap {
2976 __le32 is_ht_rate;
2977 __le32 enable_retry;
2978 __le32 rate;
2979 __le32 retry_count;
2980 } rate_entry[4];
2981 u8 multicast_rate;
2982 u8 multicast_rate_type;
2983 u8 management_rate;
2984 } __packed;
2985
2986 static int
2987 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
2988 {
2989 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
2990 int rc;
2991
2992 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2993 if (cmd == NULL)
2994 return -ENOMEM;
2995
2996 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2997 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2998 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
2999 cmd->multicast_rate = mcast;
3000 cmd->management_rate = mgmt;
3001
3002 rc = mwl8k_post_cmd(hw, &cmd->header);
3003 kfree(cmd);
3004
3005 return rc;
3006 }
3007
3008 /*
3009 * CMD_ENABLE_SNIFFER.
3010 */
3011 struct mwl8k_cmd_enable_sniffer {
3012 struct mwl8k_cmd_pkt header;
3013 __le32 action;
3014 } __packed;
3015
3016 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3017 {
3018 struct mwl8k_cmd_enable_sniffer *cmd;
3019 int rc;
3020
3021 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3022 if (cmd == NULL)
3023 return -ENOMEM;
3024
3025 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3026 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3027 cmd->action = cpu_to_le32(!!enable);
3028
3029 rc = mwl8k_post_cmd(hw, &cmd->header);
3030 kfree(cmd);
3031
3032 return rc;
3033 }
3034
3035 /*
3036 * CMD_SET_MAC_ADDR.
3037 */
3038 struct mwl8k_cmd_set_mac_addr {
3039 struct mwl8k_cmd_pkt header;
3040 union {
3041 struct {
3042 __le16 mac_type;
3043 __u8 mac_addr[ETH_ALEN];
3044 } mbss;
3045 __u8 mac_addr[ETH_ALEN];
3046 };
3047 } __packed;
3048
3049 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3050 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3051 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3052 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3053
3054 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3055 struct ieee80211_vif *vif, u8 *mac)
3056 {
3057 struct mwl8k_priv *priv = hw->priv;
3058 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3059 struct mwl8k_cmd_set_mac_addr *cmd;
3060 int mac_type;
3061 int rc;
3062
3063 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3064 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3065 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3066 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3067 else
3068 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3069 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3070 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3071 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3072 else
3073 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3074 }
3075
3076 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3077 if (cmd == NULL)
3078 return -ENOMEM;
3079
3080 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3081 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3082 if (priv->ap_fw) {
3083 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3084 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3085 } else {
3086 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3087 }
3088
3089 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3090 kfree(cmd);
3091
3092 return rc;
3093 }
3094
3095 /*
3096 * CMD_SET_RATEADAPT_MODE.
3097 */
3098 struct mwl8k_cmd_set_rate_adapt_mode {
3099 struct mwl8k_cmd_pkt header;
3100 __le16 action;
3101 __le16 mode;
3102 } __packed;
3103
3104 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3105 {
3106 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3107 int rc;
3108
3109 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3110 if (cmd == NULL)
3111 return -ENOMEM;
3112
3113 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3114 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3115 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3116 cmd->mode = cpu_to_le16(mode);
3117
3118 rc = mwl8k_post_cmd(hw, &cmd->header);
3119 kfree(cmd);
3120
3121 return rc;
3122 }
3123
3124 /*
3125 * CMD_BSS_START.
3126 */
3127 struct mwl8k_cmd_bss_start {
3128 struct mwl8k_cmd_pkt header;
3129 __le32 enable;
3130 } __packed;
3131
3132 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3133 struct ieee80211_vif *vif, int enable)
3134 {
3135 struct mwl8k_cmd_bss_start *cmd;
3136 int rc;
3137
3138 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3139 if (cmd == NULL)
3140 return -ENOMEM;
3141
3142 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3143 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3144 cmd->enable = cpu_to_le32(enable);
3145
3146 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3147 kfree(cmd);
3148
3149 return rc;
3150 }
3151
3152 /*
3153 * CMD_SET_NEW_STN.
3154 */
3155 struct mwl8k_cmd_set_new_stn {
3156 struct mwl8k_cmd_pkt header;
3157 __le16 aid;
3158 __u8 mac_addr[6];
3159 __le16 stn_id;
3160 __le16 action;
3161 __le16 rsvd;
3162 __le32 legacy_rates;
3163 __u8 ht_rates[4];
3164 __le16 cap_info;
3165 __le16 ht_capabilities_info;
3166 __u8 mac_ht_param_info;
3167 __u8 rev;
3168 __u8 control_channel;
3169 __u8 add_channel;
3170 __le16 op_mode;
3171 __le16 stbc;
3172 __u8 add_qos_info;
3173 __u8 is_qos_sta;
3174 __le32 fw_sta_ptr;
3175 } __packed;
3176
3177 #define MWL8K_STA_ACTION_ADD 0
3178 #define MWL8K_STA_ACTION_REMOVE 2
3179
3180 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3181 struct ieee80211_vif *vif,
3182 struct ieee80211_sta *sta)
3183 {
3184 struct mwl8k_cmd_set_new_stn *cmd;
3185 u32 rates;
3186 int rc;
3187
3188 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3189 if (cmd == NULL)
3190 return -ENOMEM;
3191
3192 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3193 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3194 cmd->aid = cpu_to_le16(sta->aid);
3195 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3196 cmd->stn_id = cpu_to_le16(sta->aid);
3197 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3198 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3199 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3200 else
3201 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3202 cmd->legacy_rates = cpu_to_le32(rates);
3203 if (sta->ht_cap.ht_supported) {
3204 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3205 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3206 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3207 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3208 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3209 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3210 ((sta->ht_cap.ampdu_density & 7) << 2);
3211 cmd->is_qos_sta = 1;
3212 }
3213
3214 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3215 kfree(cmd);
3216
3217 return rc;
3218 }
3219
3220 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3221 struct ieee80211_vif *vif)
3222 {
3223 struct mwl8k_cmd_set_new_stn *cmd;
3224 int rc;
3225
3226 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3227 if (cmd == NULL)
3228 return -ENOMEM;
3229
3230 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3231 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3232 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3233
3234 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3235 kfree(cmd);
3236
3237 return rc;
3238 }
3239
3240 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3241 struct ieee80211_vif *vif, u8 *addr)
3242 {
3243 struct mwl8k_cmd_set_new_stn *cmd;
3244 int rc;
3245
3246 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3247 if (cmd == NULL)
3248 return -ENOMEM;
3249
3250 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3251 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3252 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3253 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3254
3255 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3256 kfree(cmd);
3257
3258 return rc;
3259 }
3260
3261 /*
3262 * CMD_UPDATE_ENCRYPTION.
3263 */
3264
3265 #define MAX_ENCR_KEY_LENGTH 16
3266 #define MIC_KEY_LENGTH 8
3267
3268 struct mwl8k_cmd_update_encryption {
3269 struct mwl8k_cmd_pkt header;
3270
3271 __le32 action;
3272 __le32 reserved;
3273 __u8 mac_addr[6];
3274 __u8 encr_type;
3275
3276 } __attribute__((packed));
3277
3278 struct mwl8k_cmd_set_key {
3279 struct mwl8k_cmd_pkt header;
3280
3281 __le32 action;
3282 __le32 reserved;
3283 __le16 length;
3284 __le16 key_type_id;
3285 __le32 key_info;
3286 __le32 key_id;
3287 __le16 key_len;
3288 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3289 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3290 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3291 __le16 tkip_rsc_low;
3292 __le32 tkip_rsc_high;
3293 __le16 tkip_tsc_low;
3294 __le32 tkip_tsc_high;
3295 __u8 mac_addr[6];
3296 } __attribute__((packed));
3297
3298 enum {
3299 MWL8K_ENCR_ENABLE,
3300 MWL8K_ENCR_SET_KEY,
3301 MWL8K_ENCR_REMOVE_KEY,
3302 MWL8K_ENCR_SET_GROUP_KEY,
3303 };
3304
3305 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3306 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3307 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3308 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3309 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3310
3311 enum {
3312 MWL8K_ALG_WEP,
3313 MWL8K_ALG_TKIP,
3314 MWL8K_ALG_CCMP,
3315 };
3316
3317 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3318 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3319 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3320 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3321 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3322
3323 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3324 struct ieee80211_vif *vif,
3325 u8 *addr,
3326 u8 encr_type)
3327 {
3328 struct mwl8k_cmd_update_encryption *cmd;
3329 int rc;
3330
3331 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3332 if (cmd == NULL)
3333 return -ENOMEM;
3334
3335 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3336 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3337 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3338 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3339 cmd->encr_type = encr_type;
3340
3341 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3342 kfree(cmd);
3343
3344 return rc;
3345 }
3346
3347 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3348 u8 *addr,
3349 struct ieee80211_key_conf *key)
3350 {
3351 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3352 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3353 cmd->length = cpu_to_le16(sizeof(*cmd) -
3354 offsetof(struct mwl8k_cmd_set_key, length));
3355 cmd->key_id = cpu_to_le32(key->keyidx);
3356 cmd->key_len = cpu_to_le16(key->keylen);
3357 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3358
3359 switch (key->cipher) {
3360 case WLAN_CIPHER_SUITE_WEP40:
3361 case WLAN_CIPHER_SUITE_WEP104:
3362 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3363 if (key->keyidx == 0)
3364 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3365
3366 break;
3367 case WLAN_CIPHER_SUITE_TKIP:
3368 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
3369 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3370 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3371 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3372 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
3373 | MWL8K_KEY_FLAG_TSC_VALID);
3374 break;
3375 case WLAN_CIPHER_SUITE_CCMP:
3376 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
3377 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3378 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
3379 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
3380 break;
3381 default:
3382 return -ENOTSUPP;
3383 }
3384
3385 return 0;
3386 }
3387
3388 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
3389 struct ieee80211_vif *vif,
3390 u8 *addr,
3391 struct ieee80211_key_conf *key)
3392 {
3393 struct mwl8k_cmd_set_key *cmd;
3394 int rc;
3395 int keymlen;
3396 u32 action;
3397 u8 idx;
3398 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3399
3400 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3401 if (cmd == NULL)
3402 return -ENOMEM;
3403
3404 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3405 if (rc < 0)
3406 goto done;
3407
3408 idx = key->keyidx;
3409
3410 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3411 action = MWL8K_ENCR_SET_KEY;
3412 else
3413 action = MWL8K_ENCR_SET_GROUP_KEY;
3414
3415 switch (key->cipher) {
3416 case WLAN_CIPHER_SUITE_WEP40:
3417 case WLAN_CIPHER_SUITE_WEP104:
3418 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
3419 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
3420 sizeof(*key) + key->keylen);
3421 mwl8k_vif->wep_key_conf[idx].enabled = 1;
3422 }
3423
3424 keymlen = 0;
3425 action = MWL8K_ENCR_SET_KEY;
3426 break;
3427 case WLAN_CIPHER_SUITE_TKIP:
3428 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
3429 break;
3430 case WLAN_CIPHER_SUITE_CCMP:
3431 keymlen = key->keylen;
3432 break;
3433 default:
3434 rc = -ENOTSUPP;
3435 goto done;
3436 }
3437
3438 memcpy(cmd->key_material, key->key, keymlen);
3439 cmd->action = cpu_to_le32(action);
3440
3441 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3442 done:
3443 kfree(cmd);
3444
3445 return rc;
3446 }
3447
3448 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
3449 struct ieee80211_vif *vif,
3450 u8 *addr,
3451 struct ieee80211_key_conf *key)
3452 {
3453 struct mwl8k_cmd_set_key *cmd;
3454 int rc;
3455 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3456
3457 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3458 if (cmd == NULL)
3459 return -ENOMEM;
3460
3461 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
3462 if (rc < 0)
3463 goto done;
3464
3465 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3466 WLAN_CIPHER_SUITE_WEP104)
3467 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
3468
3469 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
3470
3471 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3472 done:
3473 kfree(cmd);
3474
3475 return rc;
3476 }
3477
3478 static int mwl8k_set_key(struct ieee80211_hw *hw,
3479 enum set_key_cmd cmd_param,
3480 struct ieee80211_vif *vif,
3481 struct ieee80211_sta *sta,
3482 struct ieee80211_key_conf *key)
3483 {
3484 int rc = 0;
3485 u8 encr_type;
3486 u8 *addr;
3487 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3488
3489 if (vif->type == NL80211_IFTYPE_STATION)
3490 return -EOPNOTSUPP;
3491
3492 if (sta == NULL)
3493 addr = hw->wiphy->perm_addr;
3494 else
3495 addr = sta->addr;
3496
3497 if (cmd_param == SET_KEY) {
3498 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
3499 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
3500 if (rc)
3501 goto out;
3502
3503 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
3504 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
3505 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
3506 else
3507 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
3508
3509 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
3510 encr_type);
3511 if (rc)
3512 goto out;
3513
3514 mwl8k_vif->is_hw_crypto_enabled = true;
3515
3516 } else {
3517 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
3518
3519 if (rc)
3520 goto out;
3521
3522 mwl8k_vif->is_hw_crypto_enabled = false;
3523
3524 }
3525 out:
3526 return rc;
3527 }
3528
3529 /*
3530 * CMD_UPDATE_STADB.
3531 */
3532 struct ewc_ht_info {
3533 __le16 control1;
3534 __le16 control2;
3535 __le16 control3;
3536 } __packed;
3537
3538 struct peer_capability_info {
3539 /* Peer type - AP vs. STA. */
3540 __u8 peer_type;
3541
3542 /* Basic 802.11 capabilities from assoc resp. */
3543 __le16 basic_caps;
3544
3545 /* Set if peer supports 802.11n high throughput (HT). */
3546 __u8 ht_support;
3547
3548 /* Valid if HT is supported. */
3549 __le16 ht_caps;
3550 __u8 extended_ht_caps;
3551 struct ewc_ht_info ewc_info;
3552
3553 /* Legacy rate table. Intersection of our rates and peer rates. */
3554 __u8 legacy_rates[12];
3555
3556 /* HT rate table. Intersection of our rates and peer rates. */
3557 __u8 ht_rates[16];
3558 __u8 pad[16];
3559
3560 /* If set, interoperability mode, no proprietary extensions. */
3561 __u8 interop;
3562 __u8 pad2;
3563 __u8 station_id;
3564 __le16 amsdu_enabled;
3565 } __packed;
3566
3567 struct mwl8k_cmd_update_stadb {
3568 struct mwl8k_cmd_pkt header;
3569
3570 /* See STADB_ACTION_TYPE */
3571 __le32 action;
3572
3573 /* Peer MAC address */
3574 __u8 peer_addr[ETH_ALEN];
3575
3576 __le32 reserved;
3577
3578 /* Peer info - valid during add/update. */
3579 struct peer_capability_info peer_info;
3580 } __packed;
3581
3582 #define MWL8K_STA_DB_MODIFY_ENTRY 1
3583 #define MWL8K_STA_DB_DEL_ENTRY 2
3584
3585 /* Peer Entry flags - used to define the type of the peer node */
3586 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
3587
3588 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
3589 struct ieee80211_vif *vif,
3590 struct ieee80211_sta *sta)
3591 {
3592 struct mwl8k_cmd_update_stadb *cmd;
3593 struct peer_capability_info *p;
3594 u32 rates;
3595 int rc;
3596
3597 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3598 if (cmd == NULL)
3599 return -ENOMEM;
3600
3601 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3602 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3603 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
3604 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
3605
3606 p = &cmd->peer_info;
3607 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
3608 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
3609 p->ht_support = sta->ht_cap.ht_supported;
3610 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
3611 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
3612 ((sta->ht_cap.ampdu_density & 7) << 2);
3613 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3614 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3615 else
3616 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3617 legacy_rate_mask_to_array(p->legacy_rates, rates);
3618 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
3619 p->interop = 1;
3620 p->amsdu_enabled = 0;
3621
3622 rc = mwl8k_post_cmd(hw, &cmd->header);
3623 kfree(cmd);
3624
3625 return rc ? rc : p->station_id;
3626 }
3627
3628 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
3629 struct ieee80211_vif *vif, u8 *addr)
3630 {
3631 struct mwl8k_cmd_update_stadb *cmd;
3632 int rc;
3633
3634 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3635 if (cmd == NULL)
3636 return -ENOMEM;
3637
3638 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
3639 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3640 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
3641 memcpy(cmd->peer_addr, addr, ETH_ALEN);
3642
3643 rc = mwl8k_post_cmd(hw, &cmd->header);
3644 kfree(cmd);
3645
3646 return rc;
3647 }
3648
3649
3650 /*
3651 * Interrupt handling.
3652 */
3653 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
3654 {
3655 struct ieee80211_hw *hw = dev_id;
3656 struct mwl8k_priv *priv = hw->priv;
3657 u32 status;
3658
3659 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3660 if (!status)
3661 return IRQ_NONE;
3662
3663 if (status & MWL8K_A2H_INT_TX_DONE) {
3664 status &= ~MWL8K_A2H_INT_TX_DONE;
3665 tasklet_schedule(&priv->poll_tx_task);
3666 }
3667
3668 if (status & MWL8K_A2H_INT_RX_READY) {
3669 status &= ~MWL8K_A2H_INT_RX_READY;
3670 tasklet_schedule(&priv->poll_rx_task);
3671 }
3672
3673 if (status)
3674 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3675
3676 if (status & MWL8K_A2H_INT_OPC_DONE) {
3677 if (priv->hostcmd_wait != NULL)
3678 complete(priv->hostcmd_wait);
3679 }
3680
3681 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
3682 if (!mutex_is_locked(&priv->fw_mutex) &&
3683 priv->radio_on && priv->pending_tx_pkts)
3684 mwl8k_tx_start(priv);
3685 }
3686
3687 return IRQ_HANDLED;
3688 }
3689
3690 static void mwl8k_tx_poll(unsigned long data)
3691 {
3692 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3693 struct mwl8k_priv *priv = hw->priv;
3694 int limit;
3695 int i;
3696
3697 limit = 32;
3698
3699 spin_lock_bh(&priv->tx_lock);
3700
3701 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3702 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
3703
3704 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
3705 complete(priv->tx_wait);
3706 priv->tx_wait = NULL;
3707 }
3708
3709 spin_unlock_bh(&priv->tx_lock);
3710
3711 if (limit) {
3712 writel(~MWL8K_A2H_INT_TX_DONE,
3713 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3714 } else {
3715 tasklet_schedule(&priv->poll_tx_task);
3716 }
3717 }
3718
3719 static void mwl8k_rx_poll(unsigned long data)
3720 {
3721 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
3722 struct mwl8k_priv *priv = hw->priv;
3723 int limit;
3724
3725 limit = 32;
3726 limit -= rxq_process(hw, 0, limit);
3727 limit -= rxq_refill(hw, 0, limit);
3728
3729 if (limit) {
3730 writel(~MWL8K_A2H_INT_RX_READY,
3731 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3732 } else {
3733 tasklet_schedule(&priv->poll_rx_task);
3734 }
3735 }
3736
3737
3738 /*
3739 * Core driver operations.
3740 */
3741 static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3742 {
3743 struct mwl8k_priv *priv = hw->priv;
3744 int index = skb_get_queue_mapping(skb);
3745
3746 if (!priv->radio_on) {
3747 wiphy_debug(hw->wiphy,
3748 "dropped TX frame since radio disabled\n");
3749 dev_kfree_skb(skb);
3750 return;
3751 }
3752
3753 mwl8k_txq_xmit(hw, index, skb);
3754 }
3755
3756 static int mwl8k_start(struct ieee80211_hw *hw)
3757 {
3758 struct mwl8k_priv *priv = hw->priv;
3759 int rc;
3760
3761 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3762 IRQF_SHARED, MWL8K_NAME, hw);
3763 if (rc) {
3764 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
3765 return -EIO;
3766 }
3767
3768 /* Enable TX reclaim and RX tasklets. */
3769 tasklet_enable(&priv->poll_tx_task);
3770 tasklet_enable(&priv->poll_rx_task);
3771
3772 /* Enable interrupts */
3773 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3774
3775 rc = mwl8k_fw_lock(hw);
3776 if (!rc) {
3777 rc = mwl8k_cmd_radio_enable(hw);
3778
3779 if (!priv->ap_fw) {
3780 if (!rc)
3781 rc = mwl8k_cmd_enable_sniffer(hw, 0);
3782
3783 if (!rc)
3784 rc = mwl8k_cmd_set_pre_scan(hw);
3785
3786 if (!rc)
3787 rc = mwl8k_cmd_set_post_scan(hw,
3788 "\x00\x00\x00\x00\x00\x00");
3789 }
3790
3791 if (!rc)
3792 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
3793
3794 if (!rc)
3795 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
3796
3797 mwl8k_fw_unlock(hw);
3798 }
3799
3800 if (rc) {
3801 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3802 free_irq(priv->pdev->irq, hw);
3803 tasklet_disable(&priv->poll_tx_task);
3804 tasklet_disable(&priv->poll_rx_task);
3805 }
3806
3807 return rc;
3808 }
3809
3810 static void mwl8k_stop(struct ieee80211_hw *hw)
3811 {
3812 struct mwl8k_priv *priv = hw->priv;
3813 int i;
3814
3815 mwl8k_cmd_radio_disable(hw);
3816
3817 ieee80211_stop_queues(hw);
3818
3819 /* Disable interrupts */
3820 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3821 free_irq(priv->pdev->irq, hw);
3822
3823 /* Stop finalize join worker */
3824 cancel_work_sync(&priv->finalize_join_worker);
3825 if (priv->beacon_skb != NULL)
3826 dev_kfree_skb(priv->beacon_skb);
3827
3828 /* Stop TX reclaim and RX tasklets. */
3829 tasklet_disable(&priv->poll_tx_task);
3830 tasklet_disable(&priv->poll_rx_task);
3831
3832 /* Return all skbs to mac80211 */
3833 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3834 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
3835 }
3836
3837 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
3838
3839 static int mwl8k_add_interface(struct ieee80211_hw *hw,
3840 struct ieee80211_vif *vif)
3841 {
3842 struct mwl8k_priv *priv = hw->priv;
3843 struct mwl8k_vif *mwl8k_vif;
3844 u32 macids_supported;
3845 int macid, rc;
3846 struct mwl8k_device_info *di;
3847
3848 /*
3849 * Reject interface creation if sniffer mode is active, as
3850 * STA operation is mutually exclusive with hardware sniffer
3851 * mode. (Sniffer mode is only used on STA firmware.)
3852 */
3853 if (priv->sniffer_enabled) {
3854 wiphy_info(hw->wiphy,
3855 "unable to create STA interface because sniffer mode is enabled\n");
3856 return -EINVAL;
3857 }
3858
3859 di = priv->device_info;
3860 switch (vif->type) {
3861 case NL80211_IFTYPE_AP:
3862 if (!priv->ap_fw && di->fw_image_ap) {
3863 /* we must load the ap fw to meet this request */
3864 if (!list_empty(&priv->vif_list))
3865 return -EBUSY;
3866 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
3867 if (rc)
3868 return rc;
3869 }
3870 macids_supported = priv->ap_macids_supported;
3871 break;
3872 case NL80211_IFTYPE_STATION:
3873 if (priv->ap_fw && di->fw_image_sta) {
3874 /* we must load the sta fw to meet this request */
3875 if (!list_empty(&priv->vif_list))
3876 return -EBUSY;
3877 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
3878 if (rc)
3879 return rc;
3880 }
3881 macids_supported = priv->sta_macids_supported;
3882 break;
3883 default:
3884 return -EINVAL;
3885 }
3886
3887 macid = ffs(macids_supported & ~priv->macids_used);
3888 if (!macid--)
3889 return -EBUSY;
3890
3891 /* Setup driver private area. */
3892 mwl8k_vif = MWL8K_VIF(vif);
3893 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
3894 mwl8k_vif->vif = vif;
3895 mwl8k_vif->macid = macid;
3896 mwl8k_vif->seqno = 0;
3897 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
3898 mwl8k_vif->is_hw_crypto_enabled = false;
3899
3900 /* Set the mac address. */
3901 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
3902
3903 if (priv->ap_fw)
3904 mwl8k_cmd_set_new_stn_add_self(hw, vif);
3905
3906 priv->macids_used |= 1 << mwl8k_vif->macid;
3907 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
3908
3909 return 0;
3910 }
3911
3912 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
3913 struct ieee80211_vif *vif)
3914 {
3915 struct mwl8k_priv *priv = hw->priv;
3916 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3917
3918 if (priv->ap_fw)
3919 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
3920
3921 mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00");
3922
3923 priv->macids_used &= ~(1 << mwl8k_vif->macid);
3924 list_del(&mwl8k_vif->list);
3925 }
3926
3927 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
3928 {
3929 struct ieee80211_conf *conf = &hw->conf;
3930 struct mwl8k_priv *priv = hw->priv;
3931 int rc;
3932
3933 if (conf->flags & IEEE80211_CONF_IDLE) {
3934 mwl8k_cmd_radio_disable(hw);
3935 return 0;
3936 }
3937
3938 rc = mwl8k_fw_lock(hw);
3939 if (rc)
3940 return rc;
3941
3942 rc = mwl8k_cmd_radio_enable(hw);
3943 if (rc)
3944 goto out;
3945
3946 rc = mwl8k_cmd_set_rf_channel(hw, conf);
3947 if (rc)
3948 goto out;
3949
3950 if (conf->power_level > 18)
3951 conf->power_level = 18;
3952
3953 if (priv->ap_fw) {
3954 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
3955 if (rc)
3956 goto out;
3957
3958 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
3959 if (rc)
3960 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
3961 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
3962 if (rc)
3963 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
3964
3965 } else {
3966 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
3967 if (rc)
3968 goto out;
3969 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
3970 }
3971
3972 out:
3973 mwl8k_fw_unlock(hw);
3974
3975 return rc;
3976 }
3977
3978 static void
3979 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3980 struct ieee80211_bss_conf *info, u32 changed)
3981 {
3982 struct mwl8k_priv *priv = hw->priv;
3983 u32 ap_legacy_rates;
3984 u8 ap_mcs_rates[16];
3985 int rc;
3986
3987 if (mwl8k_fw_lock(hw))
3988 return;
3989
3990 /*
3991 * No need to capture a beacon if we're no longer associated.
3992 */
3993 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
3994 priv->capture_beacon = false;
3995
3996 /*
3997 * Get the AP's legacy and MCS rates.
3998 */
3999 if (vif->bss_conf.assoc) {
4000 struct ieee80211_sta *ap;
4001
4002 rcu_read_lock();
4003
4004 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4005 if (ap == NULL) {
4006 rcu_read_unlock();
4007 goto out;
4008 }
4009
4010 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4011 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4012 } else {
4013 ap_legacy_rates =
4014 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4015 }
4016 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4017
4018 rcu_read_unlock();
4019 }
4020
4021 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4022 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4023 if (rc)
4024 goto out;
4025
4026 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4027 if (rc)
4028 goto out;
4029 }
4030
4031 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4032 rc = mwl8k_set_radio_preamble(hw,
4033 vif->bss_conf.use_short_preamble);
4034 if (rc)
4035 goto out;
4036 }
4037
4038 if (changed & BSS_CHANGED_ERP_SLOT) {
4039 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4040 if (rc)
4041 goto out;
4042 }
4043
4044 if (vif->bss_conf.assoc &&
4045 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4046 BSS_CHANGED_HT))) {
4047 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4048 if (rc)
4049 goto out;
4050 }
4051
4052 if (vif->bss_conf.assoc &&
4053 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4054 /*
4055 * Finalize the join. Tell rx handler to process
4056 * next beacon from our BSSID.
4057 */
4058 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4059 priv->capture_beacon = true;
4060 }
4061
4062 out:
4063 mwl8k_fw_unlock(hw);
4064 }
4065
4066 static void
4067 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4068 struct ieee80211_bss_conf *info, u32 changed)
4069 {
4070 int rc;
4071
4072 if (mwl8k_fw_lock(hw))
4073 return;
4074
4075 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4076 rc = mwl8k_set_radio_preamble(hw,
4077 vif->bss_conf.use_short_preamble);
4078 if (rc)
4079 goto out;
4080 }
4081
4082 if (changed & BSS_CHANGED_BASIC_RATES) {
4083 int idx;
4084 int rate;
4085
4086 /*
4087 * Use lowest supported basic rate for multicasts
4088 * and management frames (such as probe responses --
4089 * beacons will always go out at 1 Mb/s).
4090 */
4091 idx = ffs(vif->bss_conf.basic_rates);
4092 if (idx)
4093 idx--;
4094
4095 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4096 rate = mwl8k_rates_24[idx].hw_value;
4097 else
4098 rate = mwl8k_rates_50[idx].hw_value;
4099
4100 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4101 }
4102
4103 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4104 struct sk_buff *skb;
4105
4106 skb = ieee80211_beacon_get(hw, vif);
4107 if (skb != NULL) {
4108 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4109 kfree_skb(skb);
4110 }
4111 }
4112
4113 if (changed & BSS_CHANGED_BEACON_ENABLED)
4114 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4115
4116 out:
4117 mwl8k_fw_unlock(hw);
4118 }
4119
4120 static void
4121 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4122 struct ieee80211_bss_conf *info, u32 changed)
4123 {
4124 struct mwl8k_priv *priv = hw->priv;
4125
4126 if (!priv->ap_fw)
4127 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4128 else
4129 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4130 }
4131
4132 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4133 struct netdev_hw_addr_list *mc_list)
4134 {
4135 struct mwl8k_cmd_pkt *cmd;
4136
4137 /*
4138 * Synthesize and return a command packet that programs the
4139 * hardware multicast address filter. At this point we don't
4140 * know whether FIF_ALLMULTI is being requested, but if it is,
4141 * we'll end up throwing this packet away and creating a new
4142 * one in mwl8k_configure_filter().
4143 */
4144 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4145
4146 return (unsigned long)cmd;
4147 }
4148
4149 static int
4150 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4151 unsigned int changed_flags,
4152 unsigned int *total_flags)
4153 {
4154 struct mwl8k_priv *priv = hw->priv;
4155
4156 /*
4157 * Hardware sniffer mode is mutually exclusive with STA
4158 * operation, so refuse to enable sniffer mode if a STA
4159 * interface is active.
4160 */
4161 if (!list_empty(&priv->vif_list)) {
4162 if (net_ratelimit())
4163 wiphy_info(hw->wiphy,
4164 "not enabling sniffer mode because STA interface is active\n");
4165 return 0;
4166 }
4167
4168 if (!priv->sniffer_enabled) {
4169 if (mwl8k_cmd_enable_sniffer(hw, 1))
4170 return 0;
4171 priv->sniffer_enabled = true;
4172 }
4173
4174 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4175 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4176 FIF_OTHER_BSS;
4177
4178 return 1;
4179 }
4180
4181 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4182 {
4183 if (!list_empty(&priv->vif_list))
4184 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4185
4186 return NULL;
4187 }
4188
4189 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4190 unsigned int changed_flags,
4191 unsigned int *total_flags,
4192 u64 multicast)
4193 {
4194 struct mwl8k_priv *priv = hw->priv;
4195 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4196
4197 /*
4198 * AP firmware doesn't allow fine-grained control over
4199 * the receive filter.
4200 */
4201 if (priv->ap_fw) {
4202 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4203 kfree(cmd);
4204 return;
4205 }
4206
4207 /*
4208 * Enable hardware sniffer mode if FIF_CONTROL or
4209 * FIF_OTHER_BSS is requested.
4210 */
4211 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4212 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4213 kfree(cmd);
4214 return;
4215 }
4216
4217 /* Clear unsupported feature flags */
4218 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4219
4220 if (mwl8k_fw_lock(hw)) {
4221 kfree(cmd);
4222 return;
4223 }
4224
4225 if (priv->sniffer_enabled) {
4226 mwl8k_cmd_enable_sniffer(hw, 0);
4227 priv->sniffer_enabled = false;
4228 }
4229
4230 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4231 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4232 /*
4233 * Disable the BSS filter.
4234 */
4235 mwl8k_cmd_set_pre_scan(hw);
4236 } else {
4237 struct mwl8k_vif *mwl8k_vif;
4238 const u8 *bssid;
4239
4240 /*
4241 * Enable the BSS filter.
4242 *
4243 * If there is an active STA interface, use that
4244 * interface's BSSID, otherwise use a dummy one
4245 * (where the OUI part needs to be nonzero for
4246 * the BSSID to be accepted by POST_SCAN).
4247 */
4248 mwl8k_vif = mwl8k_first_vif(priv);
4249 if (mwl8k_vif != NULL)
4250 bssid = mwl8k_vif->vif->bss_conf.bssid;
4251 else
4252 bssid = "\x01\x00\x00\x00\x00\x00";
4253
4254 mwl8k_cmd_set_post_scan(hw, bssid);
4255 }
4256 }
4257
4258 /*
4259 * If FIF_ALLMULTI is being requested, throw away the command
4260 * packet that ->prepare_multicast() built and replace it with
4261 * a command packet that enables reception of all multicast
4262 * packets.
4263 */
4264 if (*total_flags & FIF_ALLMULTI) {
4265 kfree(cmd);
4266 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4267 }
4268
4269 if (cmd != NULL) {
4270 mwl8k_post_cmd(hw, cmd);
4271 kfree(cmd);
4272 }
4273
4274 mwl8k_fw_unlock(hw);
4275 }
4276
4277 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4278 {
4279 return mwl8k_cmd_set_rts_threshold(hw, value);
4280 }
4281
4282 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4283 struct ieee80211_vif *vif,
4284 struct ieee80211_sta *sta)
4285 {
4286 struct mwl8k_priv *priv = hw->priv;
4287
4288 if (priv->ap_fw)
4289 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4290 else
4291 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4292 }
4293
4294 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4295 struct ieee80211_vif *vif,
4296 struct ieee80211_sta *sta)
4297 {
4298 struct mwl8k_priv *priv = hw->priv;
4299 int ret;
4300 int i;
4301 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4302 struct ieee80211_key_conf *key;
4303
4304 if (!priv->ap_fw) {
4305 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
4306 if (ret >= 0) {
4307 MWL8K_STA(sta)->peer_id = ret;
4308 ret = 0;
4309 }
4310
4311 } else {
4312 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
4313 }
4314
4315 for (i = 0; i < NUM_WEP_KEYS; i++) {
4316 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
4317 if (mwl8k_vif->wep_key_conf[i].enabled)
4318 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
4319 }
4320 return ret;
4321 }
4322
4323 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
4324 const struct ieee80211_tx_queue_params *params)
4325 {
4326 struct mwl8k_priv *priv = hw->priv;
4327 int rc;
4328
4329 rc = mwl8k_fw_lock(hw);
4330 if (!rc) {
4331 BUG_ON(queue > MWL8K_TX_QUEUES - 1);
4332 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
4333
4334 if (!priv->wmm_enabled)
4335 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
4336
4337 if (!rc) {
4338 int q = MWL8K_TX_QUEUES - 1 - queue;
4339 rc = mwl8k_cmd_set_edca_params(hw, q,
4340 params->cw_min,
4341 params->cw_max,
4342 params->aifs,
4343 params->txop);
4344 }
4345
4346 mwl8k_fw_unlock(hw);
4347 }
4348
4349 return rc;
4350 }
4351
4352 static int mwl8k_get_stats(struct ieee80211_hw *hw,
4353 struct ieee80211_low_level_stats *stats)
4354 {
4355 return mwl8k_cmd_get_stat(hw, stats);
4356 }
4357
4358 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
4359 struct survey_info *survey)
4360 {
4361 struct mwl8k_priv *priv = hw->priv;
4362 struct ieee80211_conf *conf = &hw->conf;
4363
4364 if (idx != 0)
4365 return -ENOENT;
4366
4367 survey->channel = conf->channel;
4368 survey->filled = SURVEY_INFO_NOISE_DBM;
4369 survey->noise = priv->noise;
4370
4371 return 0;
4372 }
4373
4374 static int
4375 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4376 enum ieee80211_ampdu_mlme_action action,
4377 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4378 u8 buf_size)
4379 {
4380 switch (action) {
4381 case IEEE80211_AMPDU_RX_START:
4382 case IEEE80211_AMPDU_RX_STOP:
4383 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
4384 return -ENOTSUPP;
4385 return 0;
4386 default:
4387 return -ENOTSUPP;
4388 }
4389 }
4390
4391 static const struct ieee80211_ops mwl8k_ops = {
4392 .tx = mwl8k_tx,
4393 .start = mwl8k_start,
4394 .stop = mwl8k_stop,
4395 .add_interface = mwl8k_add_interface,
4396 .remove_interface = mwl8k_remove_interface,
4397 .config = mwl8k_config,
4398 .bss_info_changed = mwl8k_bss_info_changed,
4399 .prepare_multicast = mwl8k_prepare_multicast,
4400 .configure_filter = mwl8k_configure_filter,
4401 .set_key = mwl8k_set_key,
4402 .set_rts_threshold = mwl8k_set_rts_threshold,
4403 .sta_add = mwl8k_sta_add,
4404 .sta_remove = mwl8k_sta_remove,
4405 .conf_tx = mwl8k_conf_tx,
4406 .get_stats = mwl8k_get_stats,
4407 .get_survey = mwl8k_get_survey,
4408 .ampdu_action = mwl8k_ampdu_action,
4409 };
4410
4411 static void mwl8k_finalize_join_worker(struct work_struct *work)
4412 {
4413 struct mwl8k_priv *priv =
4414 container_of(work, struct mwl8k_priv, finalize_join_worker);
4415 struct sk_buff *skb = priv->beacon_skb;
4416 struct ieee80211_mgmt *mgmt = (void *)skb->data;
4417 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
4418 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
4419 mgmt->u.beacon.variable, len);
4420 int dtim_period = 1;
4421
4422 if (tim && tim[1] >= 2)
4423 dtim_period = tim[3];
4424
4425 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
4426
4427 dev_kfree_skb(skb);
4428 priv->beacon_skb = NULL;
4429 }
4430
4431 enum {
4432 MWL8363 = 0,
4433 MWL8687,
4434 MWL8366,
4435 };
4436
4437 #define MWL8K_8366_AP_FW_API 1
4438 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
4439 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
4440
4441 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
4442 [MWL8363] = {
4443 .part_name = "88w8363",
4444 .helper_image = "mwl8k/helper_8363.fw",
4445 .fw_image_sta = "mwl8k/fmimage_8363.fw",
4446 },
4447 [MWL8687] = {
4448 .part_name = "88w8687",
4449 .helper_image = "mwl8k/helper_8687.fw",
4450 .fw_image_sta = "mwl8k/fmimage_8687.fw",
4451 },
4452 [MWL8366] = {
4453 .part_name = "88w8366",
4454 .helper_image = "mwl8k/helper_8366.fw",
4455 .fw_image_sta = "mwl8k/fmimage_8366.fw",
4456 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
4457 .fw_api_ap = MWL8K_8366_AP_FW_API,
4458 .ap_rxd_ops = &rxd_8366_ap_ops,
4459 },
4460 };
4461
4462 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
4463 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
4464 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
4465 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
4466 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
4467 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
4468 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
4469
4470 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
4471 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
4472 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
4473 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
4474 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
4475 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
4476 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
4477 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
4478 { },
4479 };
4480 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
4481
4482 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
4483 {
4484 int rc;
4485 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
4486 "Trying alternative firmware %s\n", pci_name(priv->pdev),
4487 priv->fw_pref, priv->fw_alt);
4488 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
4489 if (rc) {
4490 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4491 pci_name(priv->pdev), priv->fw_alt);
4492 return rc;
4493 }
4494 return 0;
4495 }
4496
4497 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
4498 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
4499 {
4500 struct mwl8k_priv *priv = context;
4501 struct mwl8k_device_info *di = priv->device_info;
4502 int rc;
4503
4504 switch (priv->fw_state) {
4505 case FW_STATE_INIT:
4506 if (!fw) {
4507 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
4508 pci_name(priv->pdev), di->helper_image);
4509 goto fail;
4510 }
4511 priv->fw_helper = fw;
4512 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
4513 true);
4514 if (rc && priv->fw_alt) {
4515 rc = mwl8k_request_alt_fw(priv);
4516 if (rc)
4517 goto fail;
4518 priv->fw_state = FW_STATE_LOADING_ALT;
4519 } else if (rc)
4520 goto fail;
4521 else
4522 priv->fw_state = FW_STATE_LOADING_PREF;
4523 break;
4524
4525 case FW_STATE_LOADING_PREF:
4526 if (!fw) {
4527 if (priv->fw_alt) {
4528 rc = mwl8k_request_alt_fw(priv);
4529 if (rc)
4530 goto fail;
4531 priv->fw_state = FW_STATE_LOADING_ALT;
4532 } else
4533 goto fail;
4534 } else {
4535 priv->fw_ucode = fw;
4536 rc = mwl8k_firmware_load_success(priv);
4537 if (rc)
4538 goto fail;
4539 else
4540 complete(&priv->firmware_loading_complete);
4541 }
4542 break;
4543
4544 case FW_STATE_LOADING_ALT:
4545 if (!fw) {
4546 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
4547 pci_name(priv->pdev), di->helper_image);
4548 goto fail;
4549 }
4550 priv->fw_ucode = fw;
4551 rc = mwl8k_firmware_load_success(priv);
4552 if (rc)
4553 goto fail;
4554 else
4555 complete(&priv->firmware_loading_complete);
4556 break;
4557
4558 default:
4559 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
4560 MWL8K_NAME, priv->fw_state);
4561 BUG_ON(1);
4562 }
4563
4564 return;
4565
4566 fail:
4567 priv->fw_state = FW_STATE_ERROR;
4568 complete(&priv->firmware_loading_complete);
4569 device_release_driver(&priv->pdev->dev);
4570 mwl8k_release_firmware(priv);
4571 }
4572
4573 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
4574 bool nowait)
4575 {
4576 struct mwl8k_priv *priv = hw->priv;
4577 int rc;
4578
4579 /* Reset firmware and hardware */
4580 mwl8k_hw_reset(priv);
4581
4582 /* Ask userland hotplug daemon for the device firmware */
4583 rc = mwl8k_request_firmware(priv, fw_image, nowait);
4584 if (rc) {
4585 wiphy_err(hw->wiphy, "Firmware files not found\n");
4586 return rc;
4587 }
4588
4589 if (nowait)
4590 return rc;
4591
4592 /* Load firmware into hardware */
4593 rc = mwl8k_load_firmware(hw);
4594 if (rc)
4595 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4596
4597 /* Reclaim memory once firmware is successfully loaded */
4598 mwl8k_release_firmware(priv);
4599
4600 return rc;
4601 }
4602
4603 /* initialize hw after successfully loading a firmware image */
4604 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
4605 {
4606 struct mwl8k_priv *priv = hw->priv;
4607 int rc = 0;
4608 int i;
4609
4610 if (priv->ap_fw) {
4611 priv->rxd_ops = priv->device_info->ap_rxd_ops;
4612 if (priv->rxd_ops == NULL) {
4613 wiphy_err(hw->wiphy,
4614 "Driver does not have AP firmware image support for this hardware\n");
4615 goto err_stop_firmware;
4616 }
4617 } else {
4618 priv->rxd_ops = &rxd_sta_ops;
4619 }
4620
4621 priv->sniffer_enabled = false;
4622 priv->wmm_enabled = false;
4623 priv->pending_tx_pkts = 0;
4624
4625 rc = mwl8k_rxq_init(hw, 0);
4626 if (rc)
4627 goto err_stop_firmware;
4628 rxq_refill(hw, 0, INT_MAX);
4629
4630 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4631 rc = mwl8k_txq_init(hw, i);
4632 if (rc)
4633 goto err_free_queues;
4634 }
4635
4636 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4637 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4638 iowrite32(MWL8K_A2H_INT_TX_DONE | MWL8K_A2H_INT_RX_READY,
4639 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
4640 iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4641
4642 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4643 IRQF_SHARED, MWL8K_NAME, hw);
4644 if (rc) {
4645 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4646 goto err_free_queues;
4647 }
4648
4649 /*
4650 * Temporarily enable interrupts. Initial firmware host
4651 * commands use interrupts and avoid polling. Disable
4652 * interrupts when done.
4653 */
4654 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4655
4656 /* Get config data, mac addrs etc */
4657 if (priv->ap_fw) {
4658 rc = mwl8k_cmd_get_hw_spec_ap(hw);
4659 if (!rc)
4660 rc = mwl8k_cmd_set_hw_spec(hw);
4661 } else {
4662 rc = mwl8k_cmd_get_hw_spec_sta(hw);
4663 }
4664 if (rc) {
4665 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
4666 goto err_free_irq;
4667 }
4668
4669 /* Turn radio off */
4670 rc = mwl8k_cmd_radio_disable(hw);
4671 if (rc) {
4672 wiphy_err(hw->wiphy, "Cannot disable\n");
4673 goto err_free_irq;
4674 }
4675
4676 /* Clear MAC address */
4677 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
4678 if (rc) {
4679 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
4680 goto err_free_irq;
4681 }
4682
4683 /* Disable interrupts */
4684 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4685 free_irq(priv->pdev->irq, hw);
4686
4687 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
4688 priv->device_info->part_name,
4689 priv->hw_rev, hw->wiphy->perm_addr,
4690 priv->ap_fw ? "AP" : "STA",
4691 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
4692 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
4693
4694 return 0;
4695
4696 err_free_irq:
4697 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4698 free_irq(priv->pdev->irq, hw);
4699
4700 err_free_queues:
4701 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4702 mwl8k_txq_deinit(hw, i);
4703 mwl8k_rxq_deinit(hw, 0);
4704
4705 err_stop_firmware:
4706 mwl8k_hw_reset(priv);
4707
4708 return rc;
4709 }
4710
4711 /*
4712 * invoke mwl8k_reload_firmware to change the firmware image after the device
4713 * has already been registered
4714 */
4715 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
4716 {
4717 int i, rc = 0;
4718 struct mwl8k_priv *priv = hw->priv;
4719
4720 mwl8k_stop(hw);
4721 mwl8k_rxq_deinit(hw, 0);
4722
4723 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4724 mwl8k_txq_deinit(hw, i);
4725
4726 rc = mwl8k_init_firmware(hw, fw_image, false);
4727 if (rc)
4728 goto fail;
4729
4730 rc = mwl8k_probe_hw(hw);
4731 if (rc)
4732 goto fail;
4733
4734 rc = mwl8k_start(hw);
4735 if (rc)
4736 goto fail;
4737
4738 rc = mwl8k_config(hw, ~0);
4739 if (rc)
4740 goto fail;
4741
4742 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
4743 rc = mwl8k_conf_tx(hw, i, &priv->wmm_params[i]);
4744 if (rc)
4745 goto fail;
4746 }
4747
4748 return rc;
4749
4750 fail:
4751 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
4752 return rc;
4753 }
4754
4755 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
4756 {
4757 struct ieee80211_hw *hw = priv->hw;
4758 int i, rc;
4759
4760 rc = mwl8k_load_firmware(hw);
4761 mwl8k_release_firmware(priv);
4762 if (rc) {
4763 wiphy_err(hw->wiphy, "Cannot start firmware\n");
4764 return rc;
4765 }
4766
4767 /*
4768 * Extra headroom is the size of the required DMA header
4769 * minus the size of the smallest 802.11 frame (CTS frame).
4770 */
4771 hw->extra_tx_headroom =
4772 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
4773
4774 hw->channel_change_time = 10;
4775
4776 hw->queues = MWL8K_TX_QUEUES;
4777
4778 /* Set rssi values to dBm */
4779 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
4780 hw->vif_data_size = sizeof(struct mwl8k_vif);
4781 hw->sta_data_size = sizeof(struct mwl8k_sta);
4782
4783 priv->macids_used = 0;
4784 INIT_LIST_HEAD(&priv->vif_list);
4785
4786 /* Set default radio state and preamble */
4787 priv->radio_on = 0;
4788 priv->radio_short_preamble = 0;
4789
4790 /* Finalize join worker */
4791 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
4792
4793 /* TX reclaim and RX tasklets. */
4794 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
4795 tasklet_disable(&priv->poll_tx_task);
4796 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
4797 tasklet_disable(&priv->poll_rx_task);
4798
4799 /* Power management cookie */
4800 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
4801 if (priv->cookie == NULL)
4802 return -ENOMEM;
4803
4804 mutex_init(&priv->fw_mutex);
4805 priv->fw_mutex_owner = NULL;
4806 priv->fw_mutex_depth = 0;
4807 priv->hostcmd_wait = NULL;
4808
4809 spin_lock_init(&priv->tx_lock);
4810
4811 priv->tx_wait = NULL;
4812
4813 rc = mwl8k_probe_hw(hw);
4814 if (rc)
4815 goto err_free_cookie;
4816
4817 hw->wiphy->interface_modes = 0;
4818 if (priv->ap_macids_supported || priv->device_info->fw_image_ap)
4819 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
4820 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
4821 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
4822
4823 rc = ieee80211_register_hw(hw);
4824 if (rc) {
4825 wiphy_err(hw->wiphy, "Cannot register device\n");
4826 goto err_unprobe_hw;
4827 }
4828
4829 return 0;
4830
4831 err_unprobe_hw:
4832 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4833 mwl8k_txq_deinit(hw, i);
4834 mwl8k_rxq_deinit(hw, 0);
4835
4836 err_free_cookie:
4837 if (priv->cookie != NULL)
4838 pci_free_consistent(priv->pdev, 4,
4839 priv->cookie, priv->cookie_dma);
4840
4841 return rc;
4842 }
4843 static int __devinit mwl8k_probe(struct pci_dev *pdev,
4844 const struct pci_device_id *id)
4845 {
4846 static int printed_version;
4847 struct ieee80211_hw *hw;
4848 struct mwl8k_priv *priv;
4849 struct mwl8k_device_info *di;
4850 int rc;
4851
4852 if (!printed_version) {
4853 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
4854 printed_version = 1;
4855 }
4856
4857
4858 rc = pci_enable_device(pdev);
4859 if (rc) {
4860 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
4861 MWL8K_NAME);
4862 return rc;
4863 }
4864
4865 rc = pci_request_regions(pdev, MWL8K_NAME);
4866 if (rc) {
4867 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
4868 MWL8K_NAME);
4869 goto err_disable_device;
4870 }
4871
4872 pci_set_master(pdev);
4873
4874
4875 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
4876 if (hw == NULL) {
4877 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
4878 rc = -ENOMEM;
4879 goto err_free_reg;
4880 }
4881
4882 SET_IEEE80211_DEV(hw, &pdev->dev);
4883 pci_set_drvdata(pdev, hw);
4884
4885 priv = hw->priv;
4886 priv->hw = hw;
4887 priv->pdev = pdev;
4888 priv->device_info = &mwl8k_info_tbl[id->driver_data];
4889
4890
4891 priv->sram = pci_iomap(pdev, 0, 0x10000);
4892 if (priv->sram == NULL) {
4893 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
4894 goto err_iounmap;
4895 }
4896
4897 /*
4898 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
4899 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
4900 */
4901 priv->regs = pci_iomap(pdev, 1, 0x10000);
4902 if (priv->regs == NULL) {
4903 priv->regs = pci_iomap(pdev, 2, 0x10000);
4904 if (priv->regs == NULL) {
4905 wiphy_err(hw->wiphy, "Cannot map device registers\n");
4906 goto err_iounmap;
4907 }
4908 }
4909
4910 /*
4911 * Choose the initial fw image depending on user input. If a second
4912 * image is available, make it the alternative image that will be
4913 * loaded if the first one fails.
4914 */
4915 init_completion(&priv->firmware_loading_complete);
4916 di = priv->device_info;
4917 if (ap_mode_default && di->fw_image_ap) {
4918 priv->fw_pref = di->fw_image_ap;
4919 priv->fw_alt = di->fw_image_sta;
4920 } else if (!ap_mode_default && di->fw_image_sta) {
4921 priv->fw_pref = di->fw_image_sta;
4922 priv->fw_alt = di->fw_image_ap;
4923 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
4924 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
4925 priv->fw_pref = di->fw_image_sta;
4926 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
4927 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
4928 priv->fw_pref = di->fw_image_ap;
4929 }
4930 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
4931 if (rc)
4932 goto err_stop_firmware;
4933 return rc;
4934
4935 err_stop_firmware:
4936 mwl8k_hw_reset(priv);
4937
4938 err_iounmap:
4939 if (priv->regs != NULL)
4940 pci_iounmap(pdev, priv->regs);
4941
4942 if (priv->sram != NULL)
4943 pci_iounmap(pdev, priv->sram);
4944
4945 pci_set_drvdata(pdev, NULL);
4946 ieee80211_free_hw(hw);
4947
4948 err_free_reg:
4949 pci_release_regions(pdev);
4950
4951 err_disable_device:
4952 pci_disable_device(pdev);
4953
4954 return rc;
4955 }
4956
4957 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
4958 {
4959 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
4960 }
4961
4962 static void __devexit mwl8k_remove(struct pci_dev *pdev)
4963 {
4964 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
4965 struct mwl8k_priv *priv;
4966 int i;
4967
4968 if (hw == NULL)
4969 return;
4970 priv = hw->priv;
4971
4972 wait_for_completion(&priv->firmware_loading_complete);
4973
4974 if (priv->fw_state == FW_STATE_ERROR) {
4975 mwl8k_hw_reset(priv);
4976 goto unmap;
4977 }
4978
4979 ieee80211_stop_queues(hw);
4980
4981 ieee80211_unregister_hw(hw);
4982
4983 /* Remove TX reclaim and RX tasklets. */
4984 tasklet_kill(&priv->poll_tx_task);
4985 tasklet_kill(&priv->poll_rx_task);
4986
4987 /* Stop hardware */
4988 mwl8k_hw_reset(priv);
4989
4990 /* Return all skbs to mac80211 */
4991 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4992 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4993
4994 for (i = 0; i < MWL8K_TX_QUEUES; i++)
4995 mwl8k_txq_deinit(hw, i);
4996
4997 mwl8k_rxq_deinit(hw, 0);
4998
4999 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5000
5001 unmap:
5002 pci_iounmap(pdev, priv->regs);
5003 pci_iounmap(pdev, priv->sram);
5004 pci_set_drvdata(pdev, NULL);
5005 ieee80211_free_hw(hw);
5006 pci_release_regions(pdev);
5007 pci_disable_device(pdev);
5008 }
5009
5010 static struct pci_driver mwl8k_driver = {
5011 .name = MWL8K_NAME,
5012 .id_table = mwl8k_pci_id_table,
5013 .probe = mwl8k_probe,
5014 .remove = __devexit_p(mwl8k_remove),
5015 .shutdown = __devexit_p(mwl8k_shutdown),
5016 };
5017
5018 static int __init mwl8k_init(void)
5019 {
5020 return pci_register_driver(&mwl8k_driver);
5021 }
5022
5023 static void __exit mwl8k_exit(void)
5024 {
5025 pci_unregister_driver(&mwl8k_driver);
5026 }
5027
5028 module_init(mwl8k_init);
5029 module_exit(mwl8k_exit);
5030
5031 MODULE_DESCRIPTION(MWL8K_DESC);
5032 MODULE_VERSION(MWL8K_VERSION);
5033 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5034 MODULE_LICENSE("GPL");
CRIS linux kernel tree