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mwl8k: use pci_unmap_addr{,set}() to keep track of unmap addresses on rx
[GitHub/MotorolaMobilityLLC/kernel-slsi.git] / drivers / net / wireless / mwl8k.c
1 /*
2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
4 *
5 * Copyright (C) 2008-2009 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 <net/mac80211.h>
23 #include <linux/moduleparam.h>
24 #include <linux/firmware.h>
25 #include <linux/workqueue.h>
26
27 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
28 #define MWL8K_NAME KBUILD_MODNAME
29 #define MWL8K_VERSION "0.10"
30
31 /* Register definitions */
32 #define MWL8K_HIU_GEN_PTR 0x00000c10
33 #define MWL8K_MODE_STA 0x0000005a
34 #define MWL8K_MODE_AP 0x000000a5
35 #define MWL8K_HIU_INT_CODE 0x00000c14
36 #define MWL8K_FWSTA_READY 0xf0f1f2f4
37 #define MWL8K_FWAP_READY 0xf1f2f4a5
38 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
39 #define MWL8K_HIU_SCRATCH 0x00000c40
40
41 /* Host->device communications */
42 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
43 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
44 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
45 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
46 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
47 #define MWL8K_H2A_INT_DUMMY (1 << 20)
48 #define MWL8K_H2A_INT_RESET (1 << 15)
49 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
50 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
51
52 /* Device->host communications */
53 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
54 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
55 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
56 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
57 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
58 #define MWL8K_A2H_INT_DUMMY (1 << 20)
59 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
60 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
61 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
62 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
63 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
64 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
65 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
66 #define MWL8K_A2H_INT_RX_READY (1 << 1)
67 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
68
69 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
70 MWL8K_A2H_INT_CHNL_SWITCHED | \
71 MWL8K_A2H_INT_QUEUE_EMPTY | \
72 MWL8K_A2H_INT_RADAR_DETECT | \
73 MWL8K_A2H_INT_RADIO_ON | \
74 MWL8K_A2H_INT_RADIO_OFF | \
75 MWL8K_A2H_INT_MAC_EVENT | \
76 MWL8K_A2H_INT_OPC_DONE | \
77 MWL8K_A2H_INT_RX_READY | \
78 MWL8K_A2H_INT_TX_DONE)
79
80 #define MWL8K_RX_QUEUES 1
81 #define MWL8K_TX_QUEUES 4
82
83 struct mwl8k_device_info {
84 char *part_name;
85 char *helper_image;
86 char *fw_image;
87 };
88
89 struct mwl8k_rx_queue {
90 int rxd_count;
91
92 /* hw receives here */
93 int head;
94
95 /* refill descs here */
96 int tail;
97
98 struct mwl8k_rx_desc *rxd;
99 dma_addr_t rxd_dma;
100 struct {
101 struct sk_buff *skb;
102 DECLARE_PCI_UNMAP_ADDR(dma)
103 } *buf;
104 };
105
106 struct mwl8k_tx_queue {
107 /* hw transmits here */
108 int head;
109
110 /* sw appends here */
111 int tail;
112
113 struct ieee80211_tx_queue_stats stats;
114 struct mwl8k_tx_desc *txd;
115 dma_addr_t txd_dma;
116 struct sk_buff **skb;
117 };
118
119 /* Pointers to the firmware data and meta information about it. */
120 struct mwl8k_firmware {
121 /* Boot helper code */
122 struct firmware *helper;
123
124 /* Microcode */
125 struct firmware *ucode;
126 };
127
128 struct mwl8k_priv {
129 void __iomem *sram;
130 void __iomem *regs;
131 struct ieee80211_hw *hw;
132
133 struct pci_dev *pdev;
134
135 struct mwl8k_device_info *device_info;
136 bool ap_fw;
137
138 /* firmware files and meta data */
139 struct mwl8k_firmware fw;
140
141 /* firmware access */
142 struct mutex fw_mutex;
143 struct task_struct *fw_mutex_owner;
144 int fw_mutex_depth;
145 struct completion *hostcmd_wait;
146
147 /* lock held over TX and TX reap */
148 spinlock_t tx_lock;
149
150 /* TX quiesce completion, protected by fw_mutex and tx_lock */
151 struct completion *tx_wait;
152
153 struct ieee80211_vif *vif;
154
155 struct ieee80211_channel *current_channel;
156
157 /* power management status cookie from firmware */
158 u32 *cookie;
159 dma_addr_t cookie_dma;
160
161 u16 num_mcaddrs;
162 u8 hw_rev;
163 u32 fw_rev;
164
165 /*
166 * Running count of TX packets in flight, to avoid
167 * iterating over the transmit rings each time.
168 */
169 int pending_tx_pkts;
170
171 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
172 struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];
173
174 /* PHY parameters */
175 struct ieee80211_supported_band band;
176 struct ieee80211_channel channels[14];
177 struct ieee80211_rate rates[13];
178
179 bool radio_on;
180 bool radio_short_preamble;
181 bool sniffer_enabled;
182 bool wmm_enabled;
183
184 /* XXX need to convert this to handle multiple interfaces */
185 bool capture_beacon;
186 u8 capture_bssid[ETH_ALEN];
187 struct sk_buff *beacon_skb;
188
189 /*
190 * This FJ worker has to be global as it is scheduled from the
191 * RX handler. At this point we don't know which interface it
192 * belongs to until the list of bssids waiting to complete join
193 * is checked.
194 */
195 struct work_struct finalize_join_worker;
196
197 /* Tasklet to reclaim TX descriptors and buffers after tx */
198 struct tasklet_struct tx_reclaim_task;
199 };
200
201 /* Per interface specific private data */
202 struct mwl8k_vif {
203 /* backpointer to parent config block */
204 struct mwl8k_priv *priv;
205
206 /* BSS config of AP or IBSS from mac80211*/
207 struct ieee80211_bss_conf bss_info;
208
209 /* BSSID of AP or IBSS */
210 u8 bssid[ETH_ALEN];
211 u8 mac_addr[ETH_ALEN];
212
213 /*
214 * Subset of supported legacy rates.
215 * Intersection of AP and STA supported rates.
216 */
217 struct ieee80211_rate legacy_rates[13];
218
219 /* number of supported legacy rates */
220 u8 legacy_nrates;
221
222 /* Index into station database.Returned by update_sta_db call */
223 u8 peer_id;
224
225 /* Non AMPDU sequence number assigned by driver */
226 u16 seqno;
227 };
228
229 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
230
231 static const struct ieee80211_channel mwl8k_channels[] = {
232 { .center_freq = 2412, .hw_value = 1, },
233 { .center_freq = 2417, .hw_value = 2, },
234 { .center_freq = 2422, .hw_value = 3, },
235 { .center_freq = 2427, .hw_value = 4, },
236 { .center_freq = 2432, .hw_value = 5, },
237 { .center_freq = 2437, .hw_value = 6, },
238 { .center_freq = 2442, .hw_value = 7, },
239 { .center_freq = 2447, .hw_value = 8, },
240 { .center_freq = 2452, .hw_value = 9, },
241 { .center_freq = 2457, .hw_value = 10, },
242 { .center_freq = 2462, .hw_value = 11, },
243 };
244
245 static const struct ieee80211_rate mwl8k_rates[] = {
246 { .bitrate = 10, .hw_value = 2, },
247 { .bitrate = 20, .hw_value = 4, },
248 { .bitrate = 55, .hw_value = 11, },
249 { .bitrate = 110, .hw_value = 22, },
250 { .bitrate = 220, .hw_value = 44, },
251 { .bitrate = 60, .hw_value = 12, },
252 { .bitrate = 90, .hw_value = 18, },
253 { .bitrate = 120, .hw_value = 24, },
254 { .bitrate = 180, .hw_value = 36, },
255 { .bitrate = 240, .hw_value = 48, },
256 { .bitrate = 360, .hw_value = 72, },
257 { .bitrate = 480, .hw_value = 96, },
258 { .bitrate = 540, .hw_value = 108, },
259 };
260
261 /* Set or get info from Firmware */
262 #define MWL8K_CMD_SET 0x0001
263 #define MWL8K_CMD_GET 0x0000
264
265 /* Firmware command codes */
266 #define MWL8K_CMD_CODE_DNLD 0x0001
267 #define MWL8K_CMD_GET_HW_SPEC 0x0003
268 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
269 #define MWL8K_CMD_GET_STAT 0x0014
270 #define MWL8K_CMD_RADIO_CONTROL 0x001c
271 #define MWL8K_CMD_RF_TX_POWER 0x001e
272 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
273 #define MWL8K_CMD_SET_POST_SCAN 0x0108
274 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
275 #define MWL8K_CMD_SET_AID 0x010d
276 #define MWL8K_CMD_SET_RATE 0x0110
277 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
278 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
279 #define MWL8K_CMD_SET_SLOT 0x0114
280 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
281 #define MWL8K_CMD_SET_WMM_MODE 0x0123
282 #define MWL8K_CMD_MIMO_CONFIG 0x0125
283 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
284 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
285 #define MWL8K_CMD_SET_MAC_ADDR 0x0202
286 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
287 #define MWL8K_CMD_UPDATE_STADB 0x1123
288
289 static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
290 {
291 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
292 snprintf(buf, bufsize, "%s", #x);\
293 return buf;\
294 } while (0)
295 switch (cmd & ~0x8000) {
296 MWL8K_CMDNAME(CODE_DNLD);
297 MWL8K_CMDNAME(GET_HW_SPEC);
298 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
299 MWL8K_CMDNAME(GET_STAT);
300 MWL8K_CMDNAME(RADIO_CONTROL);
301 MWL8K_CMDNAME(RF_TX_POWER);
302 MWL8K_CMDNAME(SET_PRE_SCAN);
303 MWL8K_CMDNAME(SET_POST_SCAN);
304 MWL8K_CMDNAME(SET_RF_CHANNEL);
305 MWL8K_CMDNAME(SET_AID);
306 MWL8K_CMDNAME(SET_RATE);
307 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
308 MWL8K_CMDNAME(RTS_THRESHOLD);
309 MWL8K_CMDNAME(SET_SLOT);
310 MWL8K_CMDNAME(SET_EDCA_PARAMS);
311 MWL8K_CMDNAME(SET_WMM_MODE);
312 MWL8K_CMDNAME(MIMO_CONFIG);
313 MWL8K_CMDNAME(USE_FIXED_RATE);
314 MWL8K_CMDNAME(ENABLE_SNIFFER);
315 MWL8K_CMDNAME(SET_MAC_ADDR);
316 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
317 MWL8K_CMDNAME(UPDATE_STADB);
318 default:
319 snprintf(buf, bufsize, "0x%x", cmd);
320 }
321 #undef MWL8K_CMDNAME
322
323 return buf;
324 }
325
326 /* Hardware and firmware reset */
327 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
328 {
329 iowrite32(MWL8K_H2A_INT_RESET,
330 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
331 iowrite32(MWL8K_H2A_INT_RESET,
332 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
333 msleep(20);
334 }
335
336 /* Release fw image */
337 static void mwl8k_release_fw(struct firmware **fw)
338 {
339 if (*fw == NULL)
340 return;
341 release_firmware(*fw);
342 *fw = NULL;
343 }
344
345 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
346 {
347 mwl8k_release_fw(&priv->fw.ucode);
348 mwl8k_release_fw(&priv->fw.helper);
349 }
350
351 /* Request fw image */
352 static int mwl8k_request_fw(struct mwl8k_priv *priv,
353 const char *fname, struct firmware **fw)
354 {
355 /* release current image */
356 if (*fw != NULL)
357 mwl8k_release_fw(fw);
358
359 return request_firmware((const struct firmware **)fw,
360 fname, &priv->pdev->dev);
361 }
362
363 static int mwl8k_request_firmware(struct mwl8k_priv *priv)
364 {
365 struct mwl8k_device_info *di = priv->device_info;
366 int rc;
367
368 if (di->helper_image != NULL) {
369 rc = mwl8k_request_fw(priv, di->helper_image, &priv->fw.helper);
370 if (rc) {
371 printk(KERN_ERR "%s: Error requesting helper "
372 "firmware file %s\n", pci_name(priv->pdev),
373 di->helper_image);
374 return rc;
375 }
376 }
377
378 rc = mwl8k_request_fw(priv, di->fw_image, &priv->fw.ucode);
379 if (rc) {
380 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
381 pci_name(priv->pdev), di->fw_image);
382 mwl8k_release_fw(&priv->fw.helper);
383 return rc;
384 }
385
386 return 0;
387 }
388
389 struct mwl8k_cmd_pkt {
390 __le16 code;
391 __le16 length;
392 __le16 seq_num;
393 __le16 result;
394 char payload[0];
395 } __attribute__((packed));
396
397 /*
398 * Firmware loading.
399 */
400 static int
401 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
402 {
403 void __iomem *regs = priv->regs;
404 dma_addr_t dma_addr;
405 int loops;
406
407 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
408 if (pci_dma_mapping_error(priv->pdev, dma_addr))
409 return -ENOMEM;
410
411 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
412 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
413 iowrite32(MWL8K_H2A_INT_DOORBELL,
414 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
415 iowrite32(MWL8K_H2A_INT_DUMMY,
416 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
417
418 loops = 1000;
419 do {
420 u32 int_code;
421
422 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
423 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
424 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
425 break;
426 }
427
428 cond_resched();
429 udelay(1);
430 } while (--loops);
431
432 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
433
434 return loops ? 0 : -ETIMEDOUT;
435 }
436
437 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
438 const u8 *data, size_t length)
439 {
440 struct mwl8k_cmd_pkt *cmd;
441 int done;
442 int rc = 0;
443
444 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
445 if (cmd == NULL)
446 return -ENOMEM;
447
448 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
449 cmd->seq_num = 0;
450 cmd->result = 0;
451
452 done = 0;
453 while (length) {
454 int block_size = length > 256 ? 256 : length;
455
456 memcpy(cmd->payload, data + done, block_size);
457 cmd->length = cpu_to_le16(block_size);
458
459 rc = mwl8k_send_fw_load_cmd(priv, cmd,
460 sizeof(*cmd) + block_size);
461 if (rc)
462 break;
463
464 done += block_size;
465 length -= block_size;
466 }
467
468 if (!rc) {
469 cmd->length = 0;
470 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
471 }
472
473 kfree(cmd);
474
475 return rc;
476 }
477
478 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
479 const u8 *data, size_t length)
480 {
481 unsigned char *buffer;
482 int may_continue, rc = 0;
483 u32 done, prev_block_size;
484
485 buffer = kmalloc(1024, GFP_KERNEL);
486 if (buffer == NULL)
487 return -ENOMEM;
488
489 done = 0;
490 prev_block_size = 0;
491 may_continue = 1000;
492 while (may_continue > 0) {
493 u32 block_size;
494
495 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
496 if (block_size & 1) {
497 block_size &= ~1;
498 may_continue--;
499 } else {
500 done += prev_block_size;
501 length -= prev_block_size;
502 }
503
504 if (block_size > 1024 || block_size > length) {
505 rc = -EOVERFLOW;
506 break;
507 }
508
509 if (length == 0) {
510 rc = 0;
511 break;
512 }
513
514 if (block_size == 0) {
515 rc = -EPROTO;
516 may_continue--;
517 udelay(1);
518 continue;
519 }
520
521 prev_block_size = block_size;
522 memcpy(buffer, data + done, block_size);
523
524 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
525 if (rc)
526 break;
527 }
528
529 if (!rc && length != 0)
530 rc = -EREMOTEIO;
531
532 kfree(buffer);
533
534 return rc;
535 }
536
537 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
538 {
539 struct mwl8k_priv *priv = hw->priv;
540 struct firmware *fw = priv->fw.ucode;
541 struct mwl8k_device_info *di = priv->device_info;
542 int rc;
543 int loops;
544
545 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
546 struct firmware *helper = priv->fw.helper;
547
548 if (helper == NULL) {
549 printk(KERN_ERR "%s: helper image needed but none "
550 "given\n", pci_name(priv->pdev));
551 return -EINVAL;
552 }
553
554 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
555 if (rc) {
556 printk(KERN_ERR "%s: unable to load firmware "
557 "helper image\n", pci_name(priv->pdev));
558 return rc;
559 }
560 msleep(1);
561
562 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
563 } else {
564 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
565 }
566
567 if (rc) {
568 printk(KERN_ERR "%s: unable to load firmware image\n",
569 pci_name(priv->pdev));
570 return rc;
571 }
572
573 if (di->modes & BIT(NL80211_IFTYPE_AP))
574 iowrite32(MWL8K_MODE_AP, priv->regs + MWL8K_HIU_GEN_PTR);
575 else
576 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
577 msleep(1);
578
579 loops = 200000;
580 do {
581 u32 ready_code;
582
583 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
584 if (ready_code == MWL8K_FWAP_READY) {
585 priv->ap_fw = 1;
586 break;
587 } else if (ready_code == MWL8K_FWSTA_READY) {
588 priv->ap_fw = 0;
589 break;
590 }
591
592 cond_resched();
593 udelay(1);
594 } while (--loops);
595
596 return loops ? 0 : -ETIMEDOUT;
597 }
598
599
600 /*
601 * Defines shared between transmission and reception.
602 */
603 /* HT control fields for firmware */
604 struct ewc_ht_info {
605 __le16 control1;
606 __le16 control2;
607 __le16 control3;
608 } __attribute__((packed));
609
610 /* Firmware Station database operations */
611 #define MWL8K_STA_DB_ADD_ENTRY 0
612 #define MWL8K_STA_DB_MODIFY_ENTRY 1
613 #define MWL8K_STA_DB_DEL_ENTRY 2
614 #define MWL8K_STA_DB_FLUSH 3
615
616 /* Peer Entry flags - used to define the type of the peer node */
617 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
618
619 #define MWL8K_IEEE_LEGACY_DATA_RATES 13
620 #define MWL8K_MCS_BITMAP_SIZE 16
621
622 struct peer_capability_info {
623 /* Peer type - AP vs. STA. */
624 __u8 peer_type;
625
626 /* Basic 802.11 capabilities from assoc resp. */
627 __le16 basic_caps;
628
629 /* Set if peer supports 802.11n high throughput (HT). */
630 __u8 ht_support;
631
632 /* Valid if HT is supported. */
633 __le16 ht_caps;
634 __u8 extended_ht_caps;
635 struct ewc_ht_info ewc_info;
636
637 /* Legacy rate table. Intersection of our rates and peer rates. */
638 __u8 legacy_rates[MWL8K_IEEE_LEGACY_DATA_RATES];
639
640 /* HT rate table. Intersection of our rates and peer rates. */
641 __u8 ht_rates[MWL8K_MCS_BITMAP_SIZE];
642 __u8 pad[16];
643
644 /* If set, interoperability mode, no proprietary extensions. */
645 __u8 interop;
646 __u8 pad2;
647 __u8 station_id;
648 __le16 amsdu_enabled;
649 } __attribute__((packed));
650
651 /* Inline functions to manipulate QoS field in data descriptor. */
652 static inline u16 mwl8k_qos_setbit_eosp(u16 qos)
653 {
654 u16 val_mask = 1 << 4;
655
656 /* End of Service Period Bit 4 */
657 return qos | val_mask;
658 }
659
660 static inline u16 mwl8k_qos_setbit_ack(u16 qos, u8 ack_policy)
661 {
662 u16 val_mask = 0x3;
663 u8 shift = 5;
664 u16 qos_mask = ~(val_mask << shift);
665
666 /* Ack Policy Bit 5-6 */
667 return (qos & qos_mask) | ((ack_policy & val_mask) << shift);
668 }
669
670 static inline u16 mwl8k_qos_setbit_amsdu(u16 qos)
671 {
672 u16 val_mask = 1 << 7;
673
674 /* AMSDU present Bit 7 */
675 return qos | val_mask;
676 }
677
678 static inline u16 mwl8k_qos_setbit_qlen(u16 qos, u8 len)
679 {
680 u16 val_mask = 0xff;
681 u8 shift = 8;
682 u16 qos_mask = ~(val_mask << shift);
683
684 /* Queue Length Bits 8-15 */
685 return (qos & qos_mask) | ((len & val_mask) << shift);
686 }
687
688 /* DMA header used by firmware and hardware. */
689 struct mwl8k_dma_data {
690 __le16 fwlen;
691 struct ieee80211_hdr wh;
692 } __attribute__((packed));
693
694 /* Routines to add/remove DMA header from skb. */
695 static inline void mwl8k_remove_dma_header(struct sk_buff *skb)
696 {
697 struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)skb->data;
698 void *dst, *src = &tr->wh;
699 int hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
700 u16 space = sizeof(struct mwl8k_dma_data) - hdrlen;
701
702 dst = (void *)tr + space;
703 if (dst != src) {
704 memmove(dst, src, hdrlen);
705 skb_pull(skb, space);
706 }
707 }
708
709 static inline void mwl8k_add_dma_header(struct sk_buff *skb)
710 {
711 struct ieee80211_hdr *wh;
712 u32 hdrlen, pktlen;
713 struct mwl8k_dma_data *tr;
714
715 wh = (struct ieee80211_hdr *)skb->data;
716 hdrlen = ieee80211_hdrlen(wh->frame_control);
717 pktlen = skb->len;
718
719 /*
720 * Copy up/down the 802.11 header; the firmware requires
721 * we present a 2-byte payload length followed by a
722 * 4-address header (w/o QoS), followed (optionally) by
723 * any WEP/ExtIV header (but only filled in for CCMP).
724 */
725 if (hdrlen != sizeof(struct mwl8k_dma_data))
726 skb_push(skb, sizeof(struct mwl8k_dma_data) - hdrlen);
727
728 tr = (struct mwl8k_dma_data *)skb->data;
729 if (wh != &tr->wh)
730 memmove(&tr->wh, wh, hdrlen);
731
732 /* Clear addr4 */
733 memset(tr->wh.addr4, 0, ETH_ALEN);
734
735 /*
736 * Firmware length is the length of the fully formed "802.11
737 * payload". That is, everything except for the 802.11 header.
738 * This includes all crypto material including the MIC.
739 */
740 tr->fwlen = cpu_to_le16(pktlen - hdrlen);
741 }
742
743
744 /*
745 * Packet reception.
746 */
747 #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02
748
749 struct mwl8k_rx_desc {
750 __le16 pkt_len;
751 __u8 link_quality;
752 __u8 noise_level;
753 __le32 pkt_phys_addr;
754 __le32 next_rxd_phys_addr;
755 __le16 qos_control;
756 __le16 rate_info;
757 __le32 pad0[4];
758 __u8 rssi;
759 __u8 channel;
760 __le16 pad1;
761 __u8 rx_ctrl;
762 __u8 rx_status;
763 __u8 pad2[2];
764 } __attribute__((packed));
765
766 #define MWL8K_RX_DESCS 256
767 #define MWL8K_RX_MAXSZ 3800
768
769 #define RATE_INFO_SHORTPRE 0x8000
770 #define RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
771 #define RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
772 #define RATE_INFO_40MHZ 0x0004
773 #define RATE_INFO_SHORTGI 0x0002
774 #define RATE_INFO_MCS_FORMAT 0x0001
775
776 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
777 {
778 struct mwl8k_priv *priv = hw->priv;
779 struct mwl8k_rx_queue *rxq = priv->rxq + index;
780 int size;
781 int i;
782
783 rxq->rxd_count = 0;
784 rxq->head = 0;
785 rxq->tail = 0;
786
787 size = MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc);
788
789 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
790 if (rxq->rxd == NULL) {
791 printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
792 wiphy_name(hw->wiphy));
793 return -ENOMEM;
794 }
795 memset(rxq->rxd, 0, size);
796
797 rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
798 if (rxq->buf == NULL) {
799 printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
800 wiphy_name(hw->wiphy));
801 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
802 return -ENOMEM;
803 }
804 memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
805
806 for (i = 0; i < MWL8K_RX_DESCS; i++) {
807 struct mwl8k_rx_desc *rx_desc;
808 int nexti;
809
810 rx_desc = rxq->rxd + i;
811 nexti = (i + 1) % MWL8K_RX_DESCS;
812
813 rx_desc->next_rxd_phys_addr =
814 cpu_to_le32(rxq->rxd_dma + nexti * sizeof(*rx_desc));
815 rx_desc->rx_ctrl = MWL8K_RX_CTRL_OWNED_BY_HOST;
816 }
817
818 return 0;
819 }
820
821 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
822 {
823 struct mwl8k_priv *priv = hw->priv;
824 struct mwl8k_rx_queue *rxq = priv->rxq + index;
825 int refilled;
826
827 refilled = 0;
828 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
829 struct sk_buff *skb;
830 dma_addr_t addr;
831 int rx;
832
833 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
834 if (skb == NULL)
835 break;
836
837 rxq->rxd_count++;
838
839 rx = rxq->tail;
840 rxq->tail = (rx + 1) % MWL8K_RX_DESCS;
841
842 addr = pci_map_single(priv->pdev, skb->data,
843 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
844
845 rxq->rxd[rx].pkt_len = cpu_to_le16(MWL8K_RX_MAXSZ);
846 rxq->rxd[rx].pkt_phys_addr = cpu_to_le32(addr);
847 rxq->buf[rx].skb = skb;
848 pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
849 wmb();
850 rxq->rxd[rx].rx_ctrl = 0;
851
852 refilled++;
853 }
854
855 return refilled;
856 }
857
858 /* Must be called only when the card's reception is completely halted */
859 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
860 {
861 struct mwl8k_priv *priv = hw->priv;
862 struct mwl8k_rx_queue *rxq = priv->rxq + index;
863 int i;
864
865 for (i = 0; i < MWL8K_RX_DESCS; i++) {
866 if (rxq->buf[i].skb != NULL) {
867 pci_unmap_single(priv->pdev,
868 pci_unmap_addr(&rxq->buf[i], dma),
869 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
870 pci_unmap_addr_set(&rxq->buf[i], dma, 0);
871
872 kfree_skb(rxq->buf[i].skb);
873 rxq->buf[i].skb = NULL;
874 }
875 }
876
877 kfree(rxq->buf);
878 rxq->buf = NULL;
879
880 pci_free_consistent(priv->pdev,
881 MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc),
882 rxq->rxd, rxq->rxd_dma);
883 rxq->rxd = NULL;
884 }
885
886
887 /*
888 * Scan a list of BSSIDs to process for finalize join.
889 * Allows for extension to process multiple BSSIDs.
890 */
891 static inline int
892 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
893 {
894 return priv->capture_beacon &&
895 ieee80211_is_beacon(wh->frame_control) &&
896 !compare_ether_addr(wh->addr3, priv->capture_bssid);
897 }
898
899 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
900 struct sk_buff *skb)
901 {
902 struct mwl8k_priv *priv = hw->priv;
903
904 priv->capture_beacon = false;
905 memset(priv->capture_bssid, 0, ETH_ALEN);
906
907 /*
908 * Use GFP_ATOMIC as rxq_process is called from
909 * the primary interrupt handler, memory allocation call
910 * must not sleep.
911 */
912 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
913 if (priv->beacon_skb != NULL)
914 ieee80211_queue_work(hw, &priv->finalize_join_worker);
915 }
916
917 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
918 {
919 struct mwl8k_priv *priv = hw->priv;
920 struct mwl8k_rx_queue *rxq = priv->rxq + index;
921 int processed;
922
923 processed = 0;
924 while (rxq->rxd_count && limit--) {
925 struct mwl8k_rx_desc *rx_desc;
926 struct sk_buff *skb;
927 struct ieee80211_rx_status status;
928 struct ieee80211_hdr *wh;
929 u16 rate_info;
930
931 rx_desc = rxq->rxd + rxq->head;
932 if (!(rx_desc->rx_ctrl & MWL8K_RX_CTRL_OWNED_BY_HOST))
933 break;
934 rmb();
935
936 skb = rxq->buf[rxq->head].skb;
937 if (skb == NULL)
938 break;
939 rxq->buf[rxq->head].skb = NULL;
940
941 pci_unmap_single(priv->pdev,
942 pci_unmap_addr(&rxq->buf[rxq->head], dma),
943 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
944 pci_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
945
946 rxq->head = (rxq->head + 1) % MWL8K_RX_DESCS;
947 rxq->rxd_count--;
948
949 skb_put(skb, le16_to_cpu(rx_desc->pkt_len));
950 mwl8k_remove_dma_header(skb);
951
952 wh = (struct ieee80211_hdr *)skb->data;
953
954 /*
955 * Check for a pending join operation. Save a
956 * copy of the beacon and schedule a tasklet to
957 * send a FINALIZE_JOIN command to the firmware.
958 */
959 if (mwl8k_capture_bssid(priv, wh))
960 mwl8k_save_beacon(hw, skb);
961
962 rate_info = le16_to_cpu(rx_desc->rate_info);
963
964 memset(&status, 0, sizeof(status));
965 status.mactime = 0;
966 status.signal = -rx_desc->rssi;
967 status.noise = -rx_desc->noise_level;
968 status.qual = rx_desc->link_quality;
969 status.antenna = RATE_INFO_ANTSELECT(rate_info);
970 status.rate_idx = RATE_INFO_RATEID(rate_info);
971 status.flag = 0;
972 if (rate_info & RATE_INFO_SHORTPRE)
973 status.flag |= RX_FLAG_SHORTPRE;
974 if (rate_info & RATE_INFO_40MHZ)
975 status.flag |= RX_FLAG_40MHZ;
976 if (rate_info & RATE_INFO_SHORTGI)
977 status.flag |= RX_FLAG_SHORT_GI;
978 if (rate_info & RATE_INFO_MCS_FORMAT)
979 status.flag |= RX_FLAG_HT;
980 status.band = IEEE80211_BAND_2GHZ;
981 status.freq = ieee80211_channel_to_frequency(rx_desc->channel);
982 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
983 ieee80211_rx_irqsafe(hw, skb);
984
985 processed++;
986 }
987
988 return processed;
989 }
990
991
992 /*
993 * Packet transmission.
994 */
995
996 /* Transmit packet ACK policy */
997 #define MWL8K_TXD_ACK_POLICY_NORMAL 0
998 #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3
999
1000 #define MWL8K_TXD_STATUS_OK 0x00000001
1001 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1002 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1003 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1004 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1005
1006 struct mwl8k_tx_desc {
1007 __le32 status;
1008 __u8 data_rate;
1009 __u8 tx_priority;
1010 __le16 qos_control;
1011 __le32 pkt_phys_addr;
1012 __le16 pkt_len;
1013 __u8 dest_MAC_addr[ETH_ALEN];
1014 __le32 next_txd_phys_addr;
1015 __le32 reserved;
1016 __le16 rate_info;
1017 __u8 peer_id;
1018 __u8 tx_frag_cnt;
1019 } __attribute__((packed));
1020
1021 #define MWL8K_TX_DESCS 128
1022
1023 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1024 {
1025 struct mwl8k_priv *priv = hw->priv;
1026 struct mwl8k_tx_queue *txq = priv->txq + index;
1027 int size;
1028 int i;
1029
1030 memset(&txq->stats, 0, sizeof(struct ieee80211_tx_queue_stats));
1031 txq->stats.limit = MWL8K_TX_DESCS;
1032 txq->head = 0;
1033 txq->tail = 0;
1034
1035 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1036
1037 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1038 if (txq->txd == NULL) {
1039 printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
1040 wiphy_name(hw->wiphy));
1041 return -ENOMEM;
1042 }
1043 memset(txq->txd, 0, size);
1044
1045 txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1046 if (txq->skb == NULL) {
1047 printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
1048 wiphy_name(hw->wiphy));
1049 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1050 return -ENOMEM;
1051 }
1052 memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1053
1054 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1055 struct mwl8k_tx_desc *tx_desc;
1056 int nexti;
1057
1058 tx_desc = txq->txd + i;
1059 nexti = (i + 1) % MWL8K_TX_DESCS;
1060
1061 tx_desc->status = 0;
1062 tx_desc->next_txd_phys_addr =
1063 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1064 }
1065
1066 return 0;
1067 }
1068
1069 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1070 {
1071 iowrite32(MWL8K_H2A_INT_PPA_READY,
1072 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1073 iowrite32(MWL8K_H2A_INT_DUMMY,
1074 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1075 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1076 }
1077
1078 struct mwl8k_txq_info {
1079 u32 fw_owned;
1080 u32 drv_owned;
1081 u32 unused;
1082 u32 len;
1083 u32 head;
1084 u32 tail;
1085 };
1086
1087 static int mwl8k_scan_tx_ring(struct mwl8k_priv *priv,
1088 struct mwl8k_txq_info *txinfo)
1089 {
1090 int count, desc, status;
1091 struct mwl8k_tx_queue *txq;
1092 struct mwl8k_tx_desc *tx_desc;
1093 int ndescs = 0;
1094
1095 memset(txinfo, 0, MWL8K_TX_QUEUES * sizeof(struct mwl8k_txq_info));
1096
1097 for (count = 0; count < MWL8K_TX_QUEUES; count++) {
1098 txq = priv->txq + count;
1099 txinfo[count].len = txq->stats.len;
1100 txinfo[count].head = txq->head;
1101 txinfo[count].tail = txq->tail;
1102 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1103 tx_desc = txq->txd + desc;
1104 status = le32_to_cpu(tx_desc->status);
1105
1106 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1107 txinfo[count].fw_owned++;
1108 else
1109 txinfo[count].drv_owned++;
1110
1111 if (tx_desc->pkt_len == 0)
1112 txinfo[count].unused++;
1113 }
1114 }
1115
1116 return ndescs;
1117 }
1118
1119 /*
1120 * Must be called with priv->fw_mutex held and tx queues stopped.
1121 */
1122 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1123 {
1124 struct mwl8k_priv *priv = hw->priv;
1125 DECLARE_COMPLETION_ONSTACK(tx_wait);
1126 u32 count;
1127 unsigned long timeout;
1128
1129 might_sleep();
1130
1131 spin_lock_bh(&priv->tx_lock);
1132 count = priv->pending_tx_pkts;
1133 if (count)
1134 priv->tx_wait = &tx_wait;
1135 spin_unlock_bh(&priv->tx_lock);
1136
1137 if (count) {
1138 struct mwl8k_txq_info txinfo[MWL8K_TX_QUEUES];
1139 int index;
1140 int newcount;
1141
1142 timeout = wait_for_completion_timeout(&tx_wait,
1143 msecs_to_jiffies(5000));
1144 if (timeout)
1145 return 0;
1146
1147 spin_lock_bh(&priv->tx_lock);
1148 priv->tx_wait = NULL;
1149 newcount = priv->pending_tx_pkts;
1150 mwl8k_scan_tx_ring(priv, txinfo);
1151 spin_unlock_bh(&priv->tx_lock);
1152
1153 printk(KERN_ERR "%s(%u) TIMEDOUT:5000ms Pend:%u-->%u\n",
1154 __func__, __LINE__, count, newcount);
1155
1156 for (index = 0; index < MWL8K_TX_QUEUES; index++)
1157 printk(KERN_ERR "TXQ:%u L:%u H:%u T:%u FW:%u "
1158 "DRV:%u U:%u\n",
1159 index,
1160 txinfo[index].len,
1161 txinfo[index].head,
1162 txinfo[index].tail,
1163 txinfo[index].fw_owned,
1164 txinfo[index].drv_owned,
1165 txinfo[index].unused);
1166
1167 return -ETIMEDOUT;
1168 }
1169
1170 return 0;
1171 }
1172
1173 #define MWL8K_TXD_SUCCESS(status) \
1174 ((status) & (MWL8K_TXD_STATUS_OK | \
1175 MWL8K_TXD_STATUS_OK_RETRY | \
1176 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1177
1178 static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force)
1179 {
1180 struct mwl8k_priv *priv = hw->priv;
1181 struct mwl8k_tx_queue *txq = priv->txq + index;
1182 int wake = 0;
1183
1184 while (txq->stats.len > 0) {
1185 int tx;
1186 struct mwl8k_tx_desc *tx_desc;
1187 unsigned long addr;
1188 int size;
1189 struct sk_buff *skb;
1190 struct ieee80211_tx_info *info;
1191 u32 status;
1192
1193 tx = txq->head;
1194 tx_desc = txq->txd + tx;
1195
1196 status = le32_to_cpu(tx_desc->status);
1197
1198 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1199 if (!force)
1200 break;
1201 tx_desc->status &=
1202 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1203 }
1204
1205 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1206 BUG_ON(txq->stats.len == 0);
1207 txq->stats.len--;
1208 priv->pending_tx_pkts--;
1209
1210 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1211 size = le16_to_cpu(tx_desc->pkt_len);
1212 skb = txq->skb[tx];
1213 txq->skb[tx] = NULL;
1214
1215 BUG_ON(skb == NULL);
1216 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1217
1218 mwl8k_remove_dma_header(skb);
1219
1220 /* Mark descriptor as unused */
1221 tx_desc->pkt_phys_addr = 0;
1222 tx_desc->pkt_len = 0;
1223
1224 info = IEEE80211_SKB_CB(skb);
1225 ieee80211_tx_info_clear_status(info);
1226 if (MWL8K_TXD_SUCCESS(status))
1227 info->flags |= IEEE80211_TX_STAT_ACK;
1228
1229 ieee80211_tx_status_irqsafe(hw, skb);
1230
1231 wake = 1;
1232 }
1233
1234 if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1235 ieee80211_wake_queue(hw, index);
1236 }
1237
1238 /* must be called only when the card's transmit is completely halted */
1239 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1240 {
1241 struct mwl8k_priv *priv = hw->priv;
1242 struct mwl8k_tx_queue *txq = priv->txq + index;
1243
1244 mwl8k_txq_reclaim(hw, index, 1);
1245
1246 kfree(txq->skb);
1247 txq->skb = NULL;
1248
1249 pci_free_consistent(priv->pdev,
1250 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1251 txq->txd, txq->txd_dma);
1252 txq->txd = NULL;
1253 }
1254
1255 static int
1256 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1257 {
1258 struct mwl8k_priv *priv = hw->priv;
1259 struct ieee80211_tx_info *tx_info;
1260 struct mwl8k_vif *mwl8k_vif;
1261 struct ieee80211_hdr *wh;
1262 struct mwl8k_tx_queue *txq;
1263 struct mwl8k_tx_desc *tx;
1264 dma_addr_t dma;
1265 u32 txstatus;
1266 u8 txdatarate;
1267 u16 qos;
1268
1269 wh = (struct ieee80211_hdr *)skb->data;
1270 if (ieee80211_is_data_qos(wh->frame_control))
1271 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1272 else
1273 qos = 0;
1274
1275 mwl8k_add_dma_header(skb);
1276 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1277
1278 tx_info = IEEE80211_SKB_CB(skb);
1279 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1280
1281 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1282 u16 seqno = mwl8k_vif->seqno;
1283
1284 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1285 wh->seq_ctrl |= cpu_to_le16(seqno << 4);
1286 mwl8k_vif->seqno = seqno++ % 4096;
1287 }
1288
1289 /* Setup firmware control bit fields for each frame type. */
1290 txstatus = 0;
1291 txdatarate = 0;
1292 if (ieee80211_is_mgmt(wh->frame_control) ||
1293 ieee80211_is_ctl(wh->frame_control)) {
1294 txdatarate = 0;
1295 qos = mwl8k_qos_setbit_eosp(qos);
1296 /* Set Queue size to unspecified */
1297 qos = mwl8k_qos_setbit_qlen(qos, 0xff);
1298 } else if (ieee80211_is_data(wh->frame_control)) {
1299 txdatarate = 1;
1300 if (is_multicast_ether_addr(wh->addr1))
1301 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1302
1303 /* Send pkt in an aggregate if AMPDU frame. */
1304 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1305 qos = mwl8k_qos_setbit_ack(qos,
1306 MWL8K_TXD_ACK_POLICY_BLOCKACK);
1307 else
1308 qos = mwl8k_qos_setbit_ack(qos,
1309 MWL8K_TXD_ACK_POLICY_NORMAL);
1310
1311 if (qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
1312 qos = mwl8k_qos_setbit_amsdu(qos);
1313 }
1314
1315 dma = pci_map_single(priv->pdev, skb->data,
1316 skb->len, PCI_DMA_TODEVICE);
1317
1318 if (pci_dma_mapping_error(priv->pdev, dma)) {
1319 printk(KERN_DEBUG "%s: failed to dma map skb, "
1320 "dropping TX frame.\n", wiphy_name(hw->wiphy));
1321 dev_kfree_skb(skb);
1322 return NETDEV_TX_OK;
1323 }
1324
1325 spin_lock_bh(&priv->tx_lock);
1326
1327 txq = priv->txq + index;
1328
1329 BUG_ON(txq->skb[txq->tail] != NULL);
1330 txq->skb[txq->tail] = skb;
1331
1332 tx = txq->txd + txq->tail;
1333 tx->data_rate = txdatarate;
1334 tx->tx_priority = index;
1335 tx->qos_control = cpu_to_le16(qos);
1336 tx->pkt_phys_addr = cpu_to_le32(dma);
1337 tx->pkt_len = cpu_to_le16(skb->len);
1338 tx->rate_info = 0;
1339 tx->peer_id = mwl8k_vif->peer_id;
1340 wmb();
1341 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1342
1343 txq->stats.count++;
1344 txq->stats.len++;
1345 priv->pending_tx_pkts++;
1346
1347 txq->tail++;
1348 if (txq->tail == MWL8K_TX_DESCS)
1349 txq->tail = 0;
1350
1351 if (txq->head == txq->tail)
1352 ieee80211_stop_queue(hw, index);
1353
1354 mwl8k_tx_start(priv);
1355
1356 spin_unlock_bh(&priv->tx_lock);
1357
1358 return NETDEV_TX_OK;
1359 }
1360
1361
1362 /*
1363 * Firmware access.
1364 *
1365 * We have the following requirements for issuing firmware commands:
1366 * - Some commands require that the packet transmit path is idle when
1367 * the command is issued. (For simplicity, we'll just quiesce the
1368 * transmit path for every command.)
1369 * - There are certain sequences of commands that need to be issued to
1370 * the hardware sequentially, with no other intervening commands.
1371 *
1372 * This leads to an implementation of a "firmware lock" as a mutex that
1373 * can be taken recursively, and which is taken by both the low-level
1374 * command submission function (mwl8k_post_cmd) as well as any users of
1375 * that function that require issuing of an atomic sequence of commands,
1376 * and quiesces the transmit path whenever it's taken.
1377 */
1378 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1379 {
1380 struct mwl8k_priv *priv = hw->priv;
1381
1382 if (priv->fw_mutex_owner != current) {
1383 int rc;
1384
1385 mutex_lock(&priv->fw_mutex);
1386 ieee80211_stop_queues(hw);
1387
1388 rc = mwl8k_tx_wait_empty(hw);
1389 if (rc) {
1390 ieee80211_wake_queues(hw);
1391 mutex_unlock(&priv->fw_mutex);
1392
1393 return rc;
1394 }
1395
1396 priv->fw_mutex_owner = current;
1397 }
1398
1399 priv->fw_mutex_depth++;
1400
1401 return 0;
1402 }
1403
1404 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1405 {
1406 struct mwl8k_priv *priv = hw->priv;
1407
1408 if (!--priv->fw_mutex_depth) {
1409 ieee80211_wake_queues(hw);
1410 priv->fw_mutex_owner = NULL;
1411 mutex_unlock(&priv->fw_mutex);
1412 }
1413 }
1414
1415
1416 /*
1417 * Command processing.
1418 */
1419
1420 /* Timeout firmware commands after 2000ms */
1421 #define MWL8K_CMD_TIMEOUT_MS 2000
1422
1423 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1424 {
1425 DECLARE_COMPLETION_ONSTACK(cmd_wait);
1426 struct mwl8k_priv *priv = hw->priv;
1427 void __iomem *regs = priv->regs;
1428 dma_addr_t dma_addr;
1429 unsigned int dma_size;
1430 int rc;
1431 unsigned long timeout = 0;
1432 u8 buf[32];
1433
1434 cmd->result = 0xffff;
1435 dma_size = le16_to_cpu(cmd->length);
1436 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1437 PCI_DMA_BIDIRECTIONAL);
1438 if (pci_dma_mapping_error(priv->pdev, dma_addr))
1439 return -ENOMEM;
1440
1441 rc = mwl8k_fw_lock(hw);
1442 if (rc) {
1443 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1444 PCI_DMA_BIDIRECTIONAL);
1445 return rc;
1446 }
1447
1448 priv->hostcmd_wait = &cmd_wait;
1449 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1450 iowrite32(MWL8K_H2A_INT_DOORBELL,
1451 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1452 iowrite32(MWL8K_H2A_INT_DUMMY,
1453 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1454
1455 timeout = wait_for_completion_timeout(&cmd_wait,
1456 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1457
1458 priv->hostcmd_wait = NULL;
1459
1460 mwl8k_fw_unlock(hw);
1461
1462 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1463 PCI_DMA_BIDIRECTIONAL);
1464
1465 if (!timeout) {
1466 printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
1467 wiphy_name(hw->wiphy),
1468 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1469 MWL8K_CMD_TIMEOUT_MS);
1470 rc = -ETIMEDOUT;
1471 } else {
1472 rc = cmd->result ? -EINVAL : 0;
1473 if (rc)
1474 printk(KERN_ERR "%s: Command %s error 0x%x\n",
1475 wiphy_name(hw->wiphy),
1476 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1477 le16_to_cpu(cmd->result));
1478 }
1479
1480 return rc;
1481 }
1482
1483 /*
1484 * GET_HW_SPEC.
1485 */
1486 struct mwl8k_cmd_get_hw_spec {
1487 struct mwl8k_cmd_pkt header;
1488 __u8 hw_rev;
1489 __u8 host_interface;
1490 __le16 num_mcaddrs;
1491 __u8 perm_addr[ETH_ALEN];
1492 __le16 region_code;
1493 __le32 fw_rev;
1494 __le32 ps_cookie;
1495 __le32 caps;
1496 __u8 mcs_bitmap[16];
1497 __le32 rx_queue_ptr;
1498 __le32 num_tx_queues;
1499 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1500 __le32 caps2;
1501 __le32 num_tx_desc_per_queue;
1502 __le32 total_rxd;
1503 } __attribute__((packed));
1504
1505 static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw *hw)
1506 {
1507 struct mwl8k_priv *priv = hw->priv;
1508 struct mwl8k_cmd_get_hw_spec *cmd;
1509 int rc;
1510 int i;
1511
1512 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1513 if (cmd == NULL)
1514 return -ENOMEM;
1515
1516 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1517 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1518
1519 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1520 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1521 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1522 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1523 for (i = 0; i < MWL8K_TX_QUEUES; i++)
1524 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1525 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1526 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1527
1528 rc = mwl8k_post_cmd(hw, &cmd->header);
1529
1530 if (!rc) {
1531 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1532 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1533 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1534 priv->hw_rev = cmd->hw_rev;
1535 }
1536
1537 kfree(cmd);
1538 return rc;
1539 }
1540
1541 /*
1542 * CMD_MAC_MULTICAST_ADR.
1543 */
1544 struct mwl8k_cmd_mac_multicast_adr {
1545 struct mwl8k_cmd_pkt header;
1546 __le16 action;
1547 __le16 numaddr;
1548 __u8 addr[0][ETH_ALEN];
1549 };
1550
1551 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
1552 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
1553 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
1554 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
1555
1556 static struct mwl8k_cmd_pkt *
1557 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1558 int mc_count, struct dev_addr_list *mclist)
1559 {
1560 struct mwl8k_priv *priv = hw->priv;
1561 struct mwl8k_cmd_mac_multicast_adr *cmd;
1562 int size;
1563
1564 if (allmulti || mc_count > priv->num_mcaddrs) {
1565 allmulti = 1;
1566 mc_count = 0;
1567 }
1568
1569 size = sizeof(*cmd) + mc_count * ETH_ALEN;
1570
1571 cmd = kzalloc(size, GFP_ATOMIC);
1572 if (cmd == NULL)
1573 return NULL;
1574
1575 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
1576 cmd->header.length = cpu_to_le16(size);
1577 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
1578 MWL8K_ENABLE_RX_BROADCAST);
1579
1580 if (allmulti) {
1581 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
1582 } else if (mc_count) {
1583 int i;
1584
1585 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
1586 cmd->numaddr = cpu_to_le16(mc_count);
1587 for (i = 0; i < mc_count && mclist; i++) {
1588 if (mclist->da_addrlen != ETH_ALEN) {
1589 kfree(cmd);
1590 return NULL;
1591 }
1592 memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
1593 mclist = mclist->next;
1594 }
1595 }
1596
1597 return &cmd->header;
1598 }
1599
1600 /*
1601 * CMD_802_11_GET_STAT.
1602 */
1603 struct mwl8k_cmd_802_11_get_stat {
1604 struct mwl8k_cmd_pkt header;
1605 __le32 stats[64];
1606 } __attribute__((packed));
1607
1608 #define MWL8K_STAT_ACK_FAILURE 9
1609 #define MWL8K_STAT_RTS_FAILURE 12
1610 #define MWL8K_STAT_FCS_ERROR 24
1611 #define MWL8K_STAT_RTS_SUCCESS 11
1612
1613 static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw *hw,
1614 struct ieee80211_low_level_stats *stats)
1615 {
1616 struct mwl8k_cmd_802_11_get_stat *cmd;
1617 int rc;
1618
1619 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1620 if (cmd == NULL)
1621 return -ENOMEM;
1622
1623 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
1624 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1625
1626 rc = mwl8k_post_cmd(hw, &cmd->header);
1627 if (!rc) {
1628 stats->dot11ACKFailureCount =
1629 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
1630 stats->dot11RTSFailureCount =
1631 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
1632 stats->dot11FCSErrorCount =
1633 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
1634 stats->dot11RTSSuccessCount =
1635 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
1636 }
1637 kfree(cmd);
1638
1639 return rc;
1640 }
1641
1642 /*
1643 * CMD_802_11_RADIO_CONTROL.
1644 */
1645 struct mwl8k_cmd_802_11_radio_control {
1646 struct mwl8k_cmd_pkt header;
1647 __le16 action;
1648 __le16 control;
1649 __le16 radio_on;
1650 } __attribute__((packed));
1651
1652 static int
1653 mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
1654 {
1655 struct mwl8k_priv *priv = hw->priv;
1656 struct mwl8k_cmd_802_11_radio_control *cmd;
1657 int rc;
1658
1659 if (enable == priv->radio_on && !force)
1660 return 0;
1661
1662 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1663 if (cmd == NULL)
1664 return -ENOMEM;
1665
1666 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
1667 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1668 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1669 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
1670 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
1671
1672 rc = mwl8k_post_cmd(hw, &cmd->header);
1673 kfree(cmd);
1674
1675 if (!rc)
1676 priv->radio_on = enable;
1677
1678 return rc;
1679 }
1680
1681 static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw *hw)
1682 {
1683 return mwl8k_cmd_802_11_radio_control(hw, 0, 0);
1684 }
1685
1686 static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw *hw)
1687 {
1688 return mwl8k_cmd_802_11_radio_control(hw, 1, 0);
1689 }
1690
1691 static int
1692 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
1693 {
1694 struct mwl8k_priv *priv;
1695
1696 if (hw == NULL || hw->priv == NULL)
1697 return -EINVAL;
1698 priv = hw->priv;
1699
1700 priv->radio_short_preamble = short_preamble;
1701
1702 return mwl8k_cmd_802_11_radio_control(hw, 1, 1);
1703 }
1704
1705 /*
1706 * CMD_802_11_RF_TX_POWER.
1707 */
1708 #define MWL8K_TX_POWER_LEVEL_TOTAL 8
1709
1710 struct mwl8k_cmd_802_11_rf_tx_power {
1711 struct mwl8k_cmd_pkt header;
1712 __le16 action;
1713 __le16 support_level;
1714 __le16 current_level;
1715 __le16 reserved;
1716 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
1717 } __attribute__((packed));
1718
1719 static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw *hw, int dBm)
1720 {
1721 struct mwl8k_cmd_802_11_rf_tx_power *cmd;
1722 int rc;
1723
1724 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1725 if (cmd == NULL)
1726 return -ENOMEM;
1727
1728 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
1729 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1730 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1731 cmd->support_level = cpu_to_le16(dBm);
1732
1733 rc = mwl8k_post_cmd(hw, &cmd->header);
1734 kfree(cmd);
1735
1736 return rc;
1737 }
1738
1739 /*
1740 * CMD_SET_PRE_SCAN.
1741 */
1742 struct mwl8k_cmd_set_pre_scan {
1743 struct mwl8k_cmd_pkt header;
1744 } __attribute__((packed));
1745
1746 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
1747 {
1748 struct mwl8k_cmd_set_pre_scan *cmd;
1749 int rc;
1750
1751 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1752 if (cmd == NULL)
1753 return -ENOMEM;
1754
1755 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
1756 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1757
1758 rc = mwl8k_post_cmd(hw, &cmd->header);
1759 kfree(cmd);
1760
1761 return rc;
1762 }
1763
1764 /*
1765 * CMD_SET_POST_SCAN.
1766 */
1767 struct mwl8k_cmd_set_post_scan {
1768 struct mwl8k_cmd_pkt header;
1769 __le32 isibss;
1770 __u8 bssid[ETH_ALEN];
1771 } __attribute__((packed));
1772
1773 static int
1774 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 *mac)
1775 {
1776 struct mwl8k_cmd_set_post_scan *cmd;
1777 int rc;
1778
1779 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1780 if (cmd == NULL)
1781 return -ENOMEM;
1782
1783 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
1784 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1785 cmd->isibss = 0;
1786 memcpy(cmd->bssid, mac, ETH_ALEN);
1787
1788 rc = mwl8k_post_cmd(hw, &cmd->header);
1789 kfree(cmd);
1790
1791 return rc;
1792 }
1793
1794 /*
1795 * CMD_SET_RF_CHANNEL.
1796 */
1797 struct mwl8k_cmd_set_rf_channel {
1798 struct mwl8k_cmd_pkt header;
1799 __le16 action;
1800 __u8 current_channel;
1801 __le32 channel_flags;
1802 } __attribute__((packed));
1803
1804 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
1805 struct ieee80211_channel *channel)
1806 {
1807 struct mwl8k_cmd_set_rf_channel *cmd;
1808 int rc;
1809
1810 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1811 if (cmd == NULL)
1812 return -ENOMEM;
1813
1814 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
1815 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1816 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1817 cmd->current_channel = channel->hw_value;
1818 if (channel->band == IEEE80211_BAND_2GHZ)
1819 cmd->channel_flags = cpu_to_le32(0x00000081);
1820 else
1821 cmd->channel_flags = cpu_to_le32(0x00000000);
1822
1823 rc = mwl8k_post_cmd(hw, &cmd->header);
1824 kfree(cmd);
1825
1826 return rc;
1827 }
1828
1829 /*
1830 * CMD_SET_SLOT.
1831 */
1832 struct mwl8k_cmd_set_slot {
1833 struct mwl8k_cmd_pkt header;
1834 __le16 action;
1835 __u8 short_slot;
1836 } __attribute__((packed));
1837
1838 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
1839 {
1840 struct mwl8k_cmd_set_slot *cmd;
1841 int rc;
1842
1843 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1844 if (cmd == NULL)
1845 return -ENOMEM;
1846
1847 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
1848 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1849 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1850 cmd->short_slot = short_slot_time;
1851
1852 rc = mwl8k_post_cmd(hw, &cmd->header);
1853 kfree(cmd);
1854
1855 return rc;
1856 }
1857
1858 /*
1859 * CMD_MIMO_CONFIG.
1860 */
1861 struct mwl8k_cmd_mimo_config {
1862 struct mwl8k_cmd_pkt header;
1863 __le32 action;
1864 __u8 rx_antenna_map;
1865 __u8 tx_antenna_map;
1866 } __attribute__((packed));
1867
1868 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
1869 {
1870 struct mwl8k_cmd_mimo_config *cmd;
1871 int rc;
1872
1873 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1874 if (cmd == NULL)
1875 return -ENOMEM;
1876
1877 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
1878 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1879 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
1880 cmd->rx_antenna_map = rx;
1881 cmd->tx_antenna_map = tx;
1882
1883 rc = mwl8k_post_cmd(hw, &cmd->header);
1884 kfree(cmd);
1885
1886 return rc;
1887 }
1888
1889 /*
1890 * CMD_ENABLE_SNIFFER.
1891 */
1892 struct mwl8k_cmd_enable_sniffer {
1893 struct mwl8k_cmd_pkt header;
1894 __le32 action;
1895 } __attribute__((packed));
1896
1897 static int mwl8k_enable_sniffer(struct ieee80211_hw *hw, bool enable)
1898 {
1899 struct mwl8k_cmd_enable_sniffer *cmd;
1900 int rc;
1901
1902 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1903 if (cmd == NULL)
1904 return -ENOMEM;
1905
1906 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
1907 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1908 cmd->action = cpu_to_le32(!!enable);
1909
1910 rc = mwl8k_post_cmd(hw, &cmd->header);
1911 kfree(cmd);
1912
1913 return rc;
1914 }
1915
1916 /*
1917 * CMD_SET_MAC_ADDR.
1918 */
1919 struct mwl8k_cmd_set_mac_addr {
1920 struct mwl8k_cmd_pkt header;
1921 __u8 mac_addr[ETH_ALEN];
1922 } __attribute__((packed));
1923
1924 static int mwl8k_set_mac_addr(struct ieee80211_hw *hw, u8 *mac)
1925 {
1926 struct mwl8k_cmd_set_mac_addr *cmd;
1927 int rc;
1928
1929 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1930 if (cmd == NULL)
1931 return -ENOMEM;
1932
1933 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
1934 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1935 memcpy(cmd->mac_addr, mac, ETH_ALEN);
1936
1937 rc = mwl8k_post_cmd(hw, &cmd->header);
1938 kfree(cmd);
1939
1940 return rc;
1941 }
1942
1943
1944 /*
1945 * CMD_SET_RATEADAPT_MODE.
1946 */
1947 struct mwl8k_cmd_set_rate_adapt_mode {
1948 struct mwl8k_cmd_pkt header;
1949 __le16 action;
1950 __le16 mode;
1951 } __attribute__((packed));
1952
1953 static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw *hw, __u16 mode)
1954 {
1955 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
1956 int rc;
1957
1958 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1959 if (cmd == NULL)
1960 return -ENOMEM;
1961
1962 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
1963 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1964 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1965 cmd->mode = cpu_to_le16(mode);
1966
1967 rc = mwl8k_post_cmd(hw, &cmd->header);
1968 kfree(cmd);
1969
1970 return rc;
1971 }
1972
1973 /*
1974 * CMD_SET_WMM_MODE.
1975 */
1976 struct mwl8k_cmd_set_wmm {
1977 struct mwl8k_cmd_pkt header;
1978 __le16 action;
1979 } __attribute__((packed));
1980
1981 static int mwl8k_set_wmm(struct ieee80211_hw *hw, bool enable)
1982 {
1983 struct mwl8k_priv *priv = hw->priv;
1984 struct mwl8k_cmd_set_wmm *cmd;
1985 int rc;
1986
1987 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1988 if (cmd == NULL)
1989 return -ENOMEM;
1990
1991 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
1992 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1993 cmd->action = cpu_to_le16(!!enable);
1994
1995 rc = mwl8k_post_cmd(hw, &cmd->header);
1996 kfree(cmd);
1997
1998 if (!rc)
1999 priv->wmm_enabled = enable;
2000
2001 return rc;
2002 }
2003
2004 /*
2005 * CMD_SET_RTS_THRESHOLD.
2006 */
2007 struct mwl8k_cmd_rts_threshold {
2008 struct mwl8k_cmd_pkt header;
2009 __le16 action;
2010 __le16 threshold;
2011 } __attribute__((packed));
2012
2013 static int mwl8k_rts_threshold(struct ieee80211_hw *hw,
2014 u16 action, u16 threshold)
2015 {
2016 struct mwl8k_cmd_rts_threshold *cmd;
2017 int rc;
2018
2019 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2020 if (cmd == NULL)
2021 return -ENOMEM;
2022
2023 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2024 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2025 cmd->action = cpu_to_le16(action);
2026 cmd->threshold = cpu_to_le16(threshold);
2027
2028 rc = mwl8k_post_cmd(hw, &cmd->header);
2029 kfree(cmd);
2030
2031 return rc;
2032 }
2033
2034 /*
2035 * CMD_SET_EDCA_PARAMS.
2036 */
2037 struct mwl8k_cmd_set_edca_params {
2038 struct mwl8k_cmd_pkt header;
2039
2040 /* See MWL8K_SET_EDCA_XXX below */
2041 __le16 action;
2042
2043 /* TX opportunity in units of 32 us */
2044 __le16 txop;
2045
2046 /* Log exponent of max contention period: 0...15*/
2047 __u8 log_cw_max;
2048
2049 /* Log exponent of min contention period: 0...15 */
2050 __u8 log_cw_min;
2051
2052 /* Adaptive interframe spacing in units of 32us */
2053 __u8 aifs;
2054
2055 /* TX queue to configure */
2056 __u8 txq;
2057 } __attribute__((packed));
2058
2059 #define MWL8K_SET_EDCA_CW 0x01
2060 #define MWL8K_SET_EDCA_TXOP 0x02
2061 #define MWL8K_SET_EDCA_AIFS 0x04
2062
2063 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2064 MWL8K_SET_EDCA_TXOP | \
2065 MWL8K_SET_EDCA_AIFS)
2066
2067 static int
2068 mwl8k_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2069 __u16 cw_min, __u16 cw_max,
2070 __u8 aifs, __u16 txop)
2071 {
2072 struct mwl8k_cmd_set_edca_params *cmd;
2073 int rc;
2074
2075 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2076 if (cmd == NULL)
2077 return -ENOMEM;
2078
2079 /*
2080 * Queues 0 (BE) and 1 (BK) are swapped in hardware for
2081 * this call.
2082 */
2083 qnum ^= !(qnum >> 1);
2084
2085 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2086 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2087 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2088 cmd->txop = cpu_to_le16(txop);
2089 cmd->log_cw_max = (u8)ilog2(cw_max + 1);
2090 cmd->log_cw_min = (u8)ilog2(cw_min + 1);
2091 cmd->aifs = aifs;
2092 cmd->txq = qnum;
2093
2094 rc = mwl8k_post_cmd(hw, &cmd->header);
2095 kfree(cmd);
2096
2097 return rc;
2098 }
2099
2100 /*
2101 * CMD_FINALIZE_JOIN.
2102 */
2103
2104 /* FJ beacon buffer size is compiled into the firmware. */
2105 #define MWL8K_FJ_BEACON_MAXLEN 128
2106
2107 struct mwl8k_cmd_finalize_join {
2108 struct mwl8k_cmd_pkt header;
2109 __le32 sleep_interval; /* Number of beacon periods to sleep */
2110 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2111 } __attribute__((packed));
2112
2113 static int mwl8k_finalize_join(struct ieee80211_hw *hw, void *frame,
2114 __u16 framelen, __u16 dtim)
2115 {
2116 struct mwl8k_cmd_finalize_join *cmd;
2117 struct ieee80211_mgmt *payload = frame;
2118 u16 hdrlen;
2119 u32 payload_len;
2120 int rc;
2121
2122 if (frame == NULL)
2123 return -EINVAL;
2124
2125 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2126 if (cmd == NULL)
2127 return -ENOMEM;
2128
2129 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2130 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2131 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2132
2133 hdrlen = ieee80211_hdrlen(payload->frame_control);
2134
2135 payload_len = framelen > hdrlen ? framelen - hdrlen : 0;
2136
2137 /* XXX TBD Might just have to abort and return an error */
2138 if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2139 printk(KERN_ERR "%s(): WARNING: Incomplete beacon "
2140 "sent to firmware. Sz=%u MAX=%u\n", __func__,
2141 payload_len, MWL8K_FJ_BEACON_MAXLEN);
2142
2143 if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2144 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2145
2146 if (payload && payload_len)
2147 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2148
2149 rc = mwl8k_post_cmd(hw, &cmd->header);
2150 kfree(cmd);
2151 return rc;
2152 }
2153
2154 /*
2155 * CMD_UPDATE_STADB.
2156 */
2157 struct mwl8k_cmd_update_sta_db {
2158 struct mwl8k_cmd_pkt header;
2159
2160 /* See STADB_ACTION_TYPE */
2161 __le32 action;
2162
2163 /* Peer MAC address */
2164 __u8 peer_addr[ETH_ALEN];
2165
2166 __le32 reserved;
2167
2168 /* Peer info - valid during add/update. */
2169 struct peer_capability_info peer_info;
2170 } __attribute__((packed));
2171
2172 static int mwl8k_cmd_update_sta_db(struct ieee80211_hw *hw,
2173 struct ieee80211_vif *vif, __u32 action)
2174 {
2175 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2176 struct ieee80211_bss_conf *info = &mv_vif->bss_info;
2177 struct mwl8k_cmd_update_sta_db *cmd;
2178 struct peer_capability_info *peer_info;
2179 struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
2180 int rc;
2181 __u8 count, *rates;
2182
2183 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2184 if (cmd == NULL)
2185 return -ENOMEM;
2186
2187 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
2188 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2189
2190 cmd->action = cpu_to_le32(action);
2191 peer_info = &cmd->peer_info;
2192 memcpy(cmd->peer_addr, mv_vif->bssid, ETH_ALEN);
2193
2194 switch (action) {
2195 case MWL8K_STA_DB_ADD_ENTRY:
2196 case MWL8K_STA_DB_MODIFY_ENTRY:
2197 /* Build peer_info block */
2198 peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
2199 peer_info->basic_caps = cpu_to_le16(info->assoc_capability);
2200 peer_info->interop = 1;
2201 peer_info->amsdu_enabled = 0;
2202
2203 rates = peer_info->legacy_rates;
2204 for (count = 0; count < mv_vif->legacy_nrates; count++)
2205 rates[count] = bitrates[count].hw_value;
2206
2207 rc = mwl8k_post_cmd(hw, &cmd->header);
2208 if (rc == 0)
2209 mv_vif->peer_id = peer_info->station_id;
2210
2211 break;
2212
2213 case MWL8K_STA_DB_DEL_ENTRY:
2214 case MWL8K_STA_DB_FLUSH:
2215 default:
2216 rc = mwl8k_post_cmd(hw, &cmd->header);
2217 if (rc == 0)
2218 mv_vif->peer_id = 0;
2219 break;
2220 }
2221 kfree(cmd);
2222
2223 return rc;
2224 }
2225
2226 /*
2227 * CMD_SET_AID.
2228 */
2229 #define MWL8K_RATE_INDEX_MAX_ARRAY 14
2230
2231 #define MWL8K_FRAME_PROT_DISABLED 0x00
2232 #define MWL8K_FRAME_PROT_11G 0x07
2233 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2234 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2235
2236 struct mwl8k_cmd_update_set_aid {
2237 struct mwl8k_cmd_pkt header;
2238 __le16 aid;
2239
2240 /* AP's MAC address (BSSID) */
2241 __u8 bssid[ETH_ALEN];
2242 __le16 protection_mode;
2243 __u8 supp_rates[MWL8K_RATE_INDEX_MAX_ARRAY];
2244 } __attribute__((packed));
2245
2246 static int mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2247 struct ieee80211_vif *vif)
2248 {
2249 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2250 struct ieee80211_bss_conf *info = &mv_vif->bss_info;
2251 struct mwl8k_cmd_update_set_aid *cmd;
2252 struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
2253 int count;
2254 u16 prot_mode;
2255 int rc;
2256
2257 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2258 if (cmd == NULL)
2259 return -ENOMEM;
2260
2261 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2262 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2263 cmd->aid = cpu_to_le16(info->aid);
2264
2265 memcpy(cmd->bssid, mv_vif->bssid, ETH_ALEN);
2266
2267 if (info->use_cts_prot) {
2268 prot_mode = MWL8K_FRAME_PROT_11G;
2269 } else {
2270 switch (info->ht_operation_mode &
2271 IEEE80211_HT_OP_MODE_PROTECTION) {
2272 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2273 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2274 break;
2275 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2276 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2277 break;
2278 default:
2279 prot_mode = MWL8K_FRAME_PROT_DISABLED;
2280 break;
2281 }
2282 }
2283 cmd->protection_mode = cpu_to_le16(prot_mode);
2284
2285 for (count = 0; count < mv_vif->legacy_nrates; count++)
2286 cmd->supp_rates[count] = bitrates[count].hw_value;
2287
2288 rc = mwl8k_post_cmd(hw, &cmd->header);
2289 kfree(cmd);
2290
2291 return rc;
2292 }
2293
2294 /*
2295 * CMD_SET_RATE.
2296 */
2297 struct mwl8k_cmd_update_rateset {
2298 struct mwl8k_cmd_pkt header;
2299 __u8 legacy_rates[MWL8K_RATE_INDEX_MAX_ARRAY];
2300
2301 /* Bitmap for supported MCS codes. */
2302 __u8 mcs_set[MWL8K_IEEE_LEGACY_DATA_RATES];
2303 __u8 reserved[MWL8K_IEEE_LEGACY_DATA_RATES];
2304 } __attribute__((packed));
2305
2306 static int mwl8k_update_rateset(struct ieee80211_hw *hw,
2307 struct ieee80211_vif *vif)
2308 {
2309 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2310 struct mwl8k_cmd_update_rateset *cmd;
2311 struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
2312 int count;
2313 int rc;
2314
2315 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2316 if (cmd == NULL)
2317 return -ENOMEM;
2318
2319 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2320 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2321
2322 for (count = 0; count < mv_vif->legacy_nrates; count++)
2323 cmd->legacy_rates[count] = bitrates[count].hw_value;
2324
2325 rc = mwl8k_post_cmd(hw, &cmd->header);
2326 kfree(cmd);
2327
2328 return rc;
2329 }
2330
2331 /*
2332 * CMD_USE_FIXED_RATE.
2333 */
2334 #define MWL8K_RATE_TABLE_SIZE 8
2335 #define MWL8K_UCAST_RATE 0
2336 #define MWL8K_USE_AUTO_RATE 0x0002
2337
2338 struct mwl8k_rate_entry {
2339 /* Set to 1 if HT rate, 0 if legacy. */
2340 __le32 is_ht_rate;
2341
2342 /* Set to 1 to use retry_count field. */
2343 __le32 enable_retry;
2344
2345 /* Specified legacy rate or MCS. */
2346 __le32 rate;
2347
2348 /* Number of allowed retries. */
2349 __le32 retry_count;
2350 } __attribute__((packed));
2351
2352 struct mwl8k_rate_table {
2353 /* 1 to allow specified rate and below */
2354 __le32 allow_rate_drop;
2355 __le32 num_rates;
2356 struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE];
2357 } __attribute__((packed));
2358
2359 struct mwl8k_cmd_use_fixed_rate {
2360 struct mwl8k_cmd_pkt header;
2361 __le32 action;
2362 struct mwl8k_rate_table rate_table;
2363
2364 /* Unicast, Broadcast or Multicast */
2365 __le32 rate_type;
2366 __le32 reserved1;
2367 __le32 reserved2;
2368 } __attribute__((packed));
2369
2370 static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw,
2371 u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table)
2372 {
2373 struct mwl8k_cmd_use_fixed_rate *cmd;
2374 int count;
2375 int rc;
2376
2377 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2378 if (cmd == NULL)
2379 return -ENOMEM;
2380
2381 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2382 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2383
2384 cmd->action = cpu_to_le32(action);
2385 cmd->rate_type = cpu_to_le32(rate_type);
2386
2387 if (rate_table != NULL) {
2388 /*
2389 * Copy over each field manually so that endian
2390 * conversion can be done.
2391 */
2392 cmd->rate_table.allow_rate_drop =
2393 cpu_to_le32(rate_table->allow_rate_drop);
2394 cmd->rate_table.num_rates =
2395 cpu_to_le32(rate_table->num_rates);
2396
2397 for (count = 0; count < rate_table->num_rates; count++) {
2398 struct mwl8k_rate_entry *dst =
2399 &cmd->rate_table.rate_entry[count];
2400 struct mwl8k_rate_entry *src =
2401 &rate_table->rate_entry[count];
2402
2403 dst->is_ht_rate = cpu_to_le32(src->is_ht_rate);
2404 dst->enable_retry = cpu_to_le32(src->enable_retry);
2405 dst->rate = cpu_to_le32(src->rate);
2406 dst->retry_count = cpu_to_le32(src->retry_count);
2407 }
2408 }
2409
2410 rc = mwl8k_post_cmd(hw, &cmd->header);
2411 kfree(cmd);
2412
2413 return rc;
2414 }
2415
2416
2417 /*
2418 * Interrupt handling.
2419 */
2420 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
2421 {
2422 struct ieee80211_hw *hw = dev_id;
2423 struct mwl8k_priv *priv = hw->priv;
2424 u32 status;
2425
2426 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
2427 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
2428
2429 if (!status)
2430 return IRQ_NONE;
2431
2432 if (status & MWL8K_A2H_INT_TX_DONE)
2433 tasklet_schedule(&priv->tx_reclaim_task);
2434
2435 if (status & MWL8K_A2H_INT_RX_READY) {
2436 while (rxq_process(hw, 0, 1))
2437 rxq_refill(hw, 0, 1);
2438 }
2439
2440 if (status & MWL8K_A2H_INT_OPC_DONE) {
2441 if (priv->hostcmd_wait != NULL)
2442 complete(priv->hostcmd_wait);
2443 }
2444
2445 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
2446 if (!mutex_is_locked(&priv->fw_mutex) &&
2447 priv->radio_on && priv->pending_tx_pkts)
2448 mwl8k_tx_start(priv);
2449 }
2450
2451 return IRQ_HANDLED;
2452 }
2453
2454
2455 /*
2456 * Core driver operations.
2457 */
2458 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2459 {
2460 struct mwl8k_priv *priv = hw->priv;
2461 int index = skb_get_queue_mapping(skb);
2462 int rc;
2463
2464 if (priv->current_channel == NULL) {
2465 printk(KERN_DEBUG "%s: dropped TX frame since radio "
2466 "disabled\n", wiphy_name(hw->wiphy));
2467 dev_kfree_skb(skb);
2468 return NETDEV_TX_OK;
2469 }
2470
2471 rc = mwl8k_txq_xmit(hw, index, skb);
2472
2473 return rc;
2474 }
2475
2476 static int mwl8k_start(struct ieee80211_hw *hw)
2477 {
2478 struct mwl8k_priv *priv = hw->priv;
2479 int rc;
2480
2481 rc = request_irq(priv->pdev->irq, &mwl8k_interrupt,
2482 IRQF_SHARED, MWL8K_NAME, hw);
2483 if (rc) {
2484 printk(KERN_ERR "%s: failed to register IRQ handler\n",
2485 wiphy_name(hw->wiphy));
2486 return -EIO;
2487 }
2488
2489 /* Enable tx reclaim tasklet */
2490 tasklet_enable(&priv->tx_reclaim_task);
2491
2492 /* Enable interrupts */
2493 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2494
2495 rc = mwl8k_fw_lock(hw);
2496 if (!rc) {
2497 rc = mwl8k_cmd_802_11_radio_enable(hw);
2498
2499 if (!rc)
2500 rc = mwl8k_cmd_set_pre_scan(hw);
2501
2502 if (!rc)
2503 rc = mwl8k_cmd_set_post_scan(hw,
2504 "\x00\x00\x00\x00\x00\x00");
2505
2506 if (!rc)
2507 rc = mwl8k_cmd_setrateadaptmode(hw, 0);
2508
2509 if (!rc)
2510 rc = mwl8k_set_wmm(hw, 0);
2511
2512 if (!rc)
2513 rc = mwl8k_enable_sniffer(hw, 0);
2514
2515 mwl8k_fw_unlock(hw);
2516 }
2517
2518 if (rc) {
2519 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2520 free_irq(priv->pdev->irq, hw);
2521 tasklet_disable(&priv->tx_reclaim_task);
2522 }
2523
2524 return rc;
2525 }
2526
2527 static void mwl8k_stop(struct ieee80211_hw *hw)
2528 {
2529 struct mwl8k_priv *priv = hw->priv;
2530 int i;
2531
2532 mwl8k_cmd_802_11_radio_disable(hw);
2533
2534 ieee80211_stop_queues(hw);
2535
2536 /* Disable interrupts */
2537 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2538 free_irq(priv->pdev->irq, hw);
2539
2540 /* Stop finalize join worker */
2541 cancel_work_sync(&priv->finalize_join_worker);
2542 if (priv->beacon_skb != NULL)
2543 dev_kfree_skb(priv->beacon_skb);
2544
2545 /* Stop tx reclaim tasklet */
2546 tasklet_disable(&priv->tx_reclaim_task);
2547
2548 /* Return all skbs to mac80211 */
2549 for (i = 0; i < MWL8K_TX_QUEUES; i++)
2550 mwl8k_txq_reclaim(hw, i, 1);
2551 }
2552
2553 static int mwl8k_add_interface(struct ieee80211_hw *hw,
2554 struct ieee80211_if_init_conf *conf)
2555 {
2556 struct mwl8k_priv *priv = hw->priv;
2557 struct mwl8k_vif *mwl8k_vif;
2558
2559 /*
2560 * We only support one active interface at a time.
2561 */
2562 if (priv->vif != NULL)
2563 return -EBUSY;
2564
2565 /*
2566 * We only support managed interfaces for now.
2567 */
2568 if (conf->type != NL80211_IFTYPE_STATION)
2569 return -EINVAL;
2570
2571 /*
2572 * Reject interface creation if sniffer mode is active, as
2573 * STA operation is mutually exclusive with hardware sniffer
2574 * mode.
2575 */
2576 if (priv->sniffer_enabled) {
2577 printk(KERN_INFO "%s: unable to create STA "
2578 "interface due to sniffer mode being enabled\n",
2579 wiphy_name(hw->wiphy));
2580 return -EINVAL;
2581 }
2582
2583 /* Clean out driver private area */
2584 mwl8k_vif = MWL8K_VIF(conf->vif);
2585 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
2586
2587 /* Set and save the mac address */
2588 mwl8k_set_mac_addr(hw, conf->mac_addr);
2589 memcpy(mwl8k_vif->mac_addr, conf->mac_addr, ETH_ALEN);
2590
2591 /* Back pointer to parent config block */
2592 mwl8k_vif->priv = priv;
2593
2594 /* Setup initial PHY parameters */
2595 memcpy(mwl8k_vif->legacy_rates,
2596 priv->rates, sizeof(mwl8k_vif->legacy_rates));
2597 mwl8k_vif->legacy_nrates = ARRAY_SIZE(priv->rates);
2598
2599 /* Set Initial sequence number to zero */
2600 mwl8k_vif->seqno = 0;
2601
2602 priv->vif = conf->vif;
2603 priv->current_channel = NULL;
2604
2605 return 0;
2606 }
2607
2608 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
2609 struct ieee80211_if_init_conf *conf)
2610 {
2611 struct mwl8k_priv *priv = hw->priv;
2612
2613 if (priv->vif == NULL)
2614 return;
2615
2616 mwl8k_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
2617
2618 priv->vif = NULL;
2619 }
2620
2621 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
2622 {
2623 struct ieee80211_conf *conf = &hw->conf;
2624 struct mwl8k_priv *priv = hw->priv;
2625 int rc;
2626
2627 if (conf->flags & IEEE80211_CONF_IDLE) {
2628 mwl8k_cmd_802_11_radio_disable(hw);
2629 priv->current_channel = NULL;
2630 return 0;
2631 }
2632
2633 rc = mwl8k_fw_lock(hw);
2634 if (rc)
2635 return rc;
2636
2637 rc = mwl8k_cmd_802_11_radio_enable(hw);
2638 if (rc)
2639 goto out;
2640
2641 rc = mwl8k_cmd_set_rf_channel(hw, conf->channel);
2642 if (rc)
2643 goto out;
2644
2645 priv->current_channel = conf->channel;
2646
2647 if (conf->power_level > 18)
2648 conf->power_level = 18;
2649 rc = mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level);
2650 if (rc)
2651 goto out;
2652
2653 if (mwl8k_cmd_mimo_config(hw, 0x7, 0x7))
2654 rc = -EINVAL;
2655
2656 out:
2657 mwl8k_fw_unlock(hw);
2658
2659 return rc;
2660 }
2661
2662 static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
2663 struct ieee80211_vif *vif,
2664 struct ieee80211_bss_conf *info,
2665 u32 changed)
2666 {
2667 struct mwl8k_priv *priv = hw->priv;
2668 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2669 int rc;
2670
2671 if (changed & BSS_CHANGED_BSSID)
2672 memcpy(mwl8k_vif->bssid, info->bssid, ETH_ALEN);
2673
2674 if ((changed & BSS_CHANGED_ASSOC) == 0)
2675 return;
2676
2677 priv->capture_beacon = false;
2678
2679 rc = mwl8k_fw_lock(hw);
2680 if (rc)
2681 return;
2682
2683 if (info->assoc) {
2684 memcpy(&mwl8k_vif->bss_info, info,
2685 sizeof(struct ieee80211_bss_conf));
2686
2687 /* Install rates */
2688 rc = mwl8k_update_rateset(hw, vif);
2689 if (rc)
2690 goto out;
2691
2692 /* Turn on rate adaptation */
2693 rc = mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE,
2694 MWL8K_UCAST_RATE, NULL);
2695 if (rc)
2696 goto out;
2697
2698 /* Set radio preamble */
2699 rc = mwl8k_set_radio_preamble(hw, info->use_short_preamble);
2700 if (rc)
2701 goto out;
2702
2703 /* Set slot time */
2704 rc = mwl8k_cmd_set_slot(hw, info->use_short_slot);
2705 if (rc)
2706 goto out;
2707
2708 /* Update peer rate info */
2709 rc = mwl8k_cmd_update_sta_db(hw, vif,
2710 MWL8K_STA_DB_MODIFY_ENTRY);
2711 if (rc)
2712 goto out;
2713
2714 /* Set AID */
2715 rc = mwl8k_cmd_set_aid(hw, vif);
2716 if (rc)
2717 goto out;
2718
2719 /*
2720 * Finalize the join. Tell rx handler to process
2721 * next beacon from our BSSID.
2722 */
2723 memcpy(priv->capture_bssid, mwl8k_vif->bssid, ETH_ALEN);
2724 priv->capture_beacon = true;
2725 } else {
2726 rc = mwl8k_cmd_update_sta_db(hw, vif, MWL8K_STA_DB_DEL_ENTRY);
2727 memset(&mwl8k_vif->bss_info, 0,
2728 sizeof(struct ieee80211_bss_conf));
2729 memset(mwl8k_vif->bssid, 0, ETH_ALEN);
2730 }
2731
2732 out:
2733 mwl8k_fw_unlock(hw);
2734 }
2735
2736 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
2737 int mc_count, struct dev_addr_list *mclist)
2738 {
2739 struct mwl8k_cmd_pkt *cmd;
2740
2741 /*
2742 * Synthesize and return a command packet that programs the
2743 * hardware multicast address filter. At this point we don't
2744 * know whether FIF_ALLMULTI is being requested, but if it is,
2745 * we'll end up throwing this packet away and creating a new
2746 * one in mwl8k_configure_filter().
2747 */
2748 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_count, mclist);
2749
2750 return (unsigned long)cmd;
2751 }
2752
2753 static int
2754 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
2755 unsigned int changed_flags,
2756 unsigned int *total_flags)
2757 {
2758 struct mwl8k_priv *priv = hw->priv;
2759
2760 /*
2761 * Hardware sniffer mode is mutually exclusive with STA
2762 * operation, so refuse to enable sniffer mode if a STA
2763 * interface is active.
2764 */
2765 if (priv->vif != NULL) {
2766 if (net_ratelimit())
2767 printk(KERN_INFO "%s: not enabling sniffer "
2768 "mode because STA interface is active\n",
2769 wiphy_name(hw->wiphy));
2770 return 0;
2771 }
2772
2773 if (!priv->sniffer_enabled) {
2774 if (mwl8k_enable_sniffer(hw, 1))
2775 return 0;
2776 priv->sniffer_enabled = true;
2777 }
2778
2779 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
2780 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
2781 FIF_OTHER_BSS;
2782
2783 return 1;
2784 }
2785
2786 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
2787 unsigned int changed_flags,
2788 unsigned int *total_flags,
2789 u64 multicast)
2790 {
2791 struct mwl8k_priv *priv = hw->priv;
2792 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
2793
2794 /*
2795 * Enable hardware sniffer mode if FIF_CONTROL or
2796 * FIF_OTHER_BSS is requested.
2797 */
2798 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
2799 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
2800 kfree(cmd);
2801 return;
2802 }
2803
2804 /* Clear unsupported feature flags */
2805 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
2806
2807 if (mwl8k_fw_lock(hw))
2808 return;
2809
2810 if (priv->sniffer_enabled) {
2811 mwl8k_enable_sniffer(hw, 0);
2812 priv->sniffer_enabled = false;
2813 }
2814
2815 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2816 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
2817 /*
2818 * Disable the BSS filter.
2819 */
2820 mwl8k_cmd_set_pre_scan(hw);
2821 } else {
2822 u8 *bssid;
2823
2824 /*
2825 * Enable the BSS filter.
2826 *
2827 * If there is an active STA interface, use that
2828 * interface's BSSID, otherwise use a dummy one
2829 * (where the OUI part needs to be nonzero for
2830 * the BSSID to be accepted by POST_SCAN).
2831 */
2832 bssid = "\x01\x00\x00\x00\x00\x00";
2833 if (priv->vif != NULL)
2834 bssid = MWL8K_VIF(priv->vif)->bssid;
2835
2836 mwl8k_cmd_set_post_scan(hw, bssid);
2837 }
2838 }
2839
2840 /*
2841 * If FIF_ALLMULTI is being requested, throw away the command
2842 * packet that ->prepare_multicast() built and replace it with
2843 * a command packet that enables reception of all multicast
2844 * packets.
2845 */
2846 if (*total_flags & FIF_ALLMULTI) {
2847 kfree(cmd);
2848 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, 0, NULL);
2849 }
2850
2851 if (cmd != NULL) {
2852 mwl8k_post_cmd(hw, cmd);
2853 kfree(cmd);
2854 }
2855
2856 mwl8k_fw_unlock(hw);
2857 }
2858
2859 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2860 {
2861 return mwl8k_rts_threshold(hw, MWL8K_CMD_SET, value);
2862 }
2863
2864 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
2865 const struct ieee80211_tx_queue_params *params)
2866 {
2867 struct mwl8k_priv *priv = hw->priv;
2868 int rc;
2869
2870 rc = mwl8k_fw_lock(hw);
2871 if (!rc) {
2872 if (!priv->wmm_enabled)
2873 rc = mwl8k_set_wmm(hw, 1);
2874
2875 if (!rc)
2876 rc = mwl8k_set_edca_params(hw, queue,
2877 params->cw_min,
2878 params->cw_max,
2879 params->aifs,
2880 params->txop);
2881
2882 mwl8k_fw_unlock(hw);
2883 }
2884
2885 return rc;
2886 }
2887
2888 static int mwl8k_get_tx_stats(struct ieee80211_hw *hw,
2889 struct ieee80211_tx_queue_stats *stats)
2890 {
2891 struct mwl8k_priv *priv = hw->priv;
2892 struct mwl8k_tx_queue *txq;
2893 int index;
2894
2895 spin_lock_bh(&priv->tx_lock);
2896 for (index = 0; index < MWL8K_TX_QUEUES; index++) {
2897 txq = priv->txq + index;
2898 memcpy(&stats[index], &txq->stats,
2899 sizeof(struct ieee80211_tx_queue_stats));
2900 }
2901 spin_unlock_bh(&priv->tx_lock);
2902
2903 return 0;
2904 }
2905
2906 static int mwl8k_get_stats(struct ieee80211_hw *hw,
2907 struct ieee80211_low_level_stats *stats)
2908 {
2909 return mwl8k_cmd_802_11_get_stat(hw, stats);
2910 }
2911
2912 static const struct ieee80211_ops mwl8k_ops = {
2913 .tx = mwl8k_tx,
2914 .start = mwl8k_start,
2915 .stop = mwl8k_stop,
2916 .add_interface = mwl8k_add_interface,
2917 .remove_interface = mwl8k_remove_interface,
2918 .config = mwl8k_config,
2919 .bss_info_changed = mwl8k_bss_info_changed,
2920 .prepare_multicast = mwl8k_prepare_multicast,
2921 .configure_filter = mwl8k_configure_filter,
2922 .set_rts_threshold = mwl8k_set_rts_threshold,
2923 .conf_tx = mwl8k_conf_tx,
2924 .get_tx_stats = mwl8k_get_tx_stats,
2925 .get_stats = mwl8k_get_stats,
2926 };
2927
2928 static void mwl8k_tx_reclaim_handler(unsigned long data)
2929 {
2930 int i;
2931 struct ieee80211_hw *hw = (struct ieee80211_hw *) data;
2932 struct mwl8k_priv *priv = hw->priv;
2933
2934 spin_lock_bh(&priv->tx_lock);
2935 for (i = 0; i < MWL8K_TX_QUEUES; i++)
2936 mwl8k_txq_reclaim(hw, i, 0);
2937
2938 if (priv->tx_wait != NULL && !priv->pending_tx_pkts) {
2939 complete(priv->tx_wait);
2940 priv->tx_wait = NULL;
2941 }
2942 spin_unlock_bh(&priv->tx_lock);
2943 }
2944
2945 static void mwl8k_finalize_join_worker(struct work_struct *work)
2946 {
2947 struct mwl8k_priv *priv =
2948 container_of(work, struct mwl8k_priv, finalize_join_worker);
2949 struct sk_buff *skb = priv->beacon_skb;
2950 u8 dtim = MWL8K_VIF(priv->vif)->bss_info.dtim_period;
2951
2952 mwl8k_finalize_join(priv->hw, skb->data, skb->len, dtim);
2953 dev_kfree_skb(skb);
2954
2955 priv->beacon_skb = NULL;
2956 }
2957
2958 static struct mwl8k_device_info di_8687 = {
2959 .part_name = "88w8687",
2960 .helper_image = "mwl8k/helper_8687.fw",
2961 .fw_image = "mwl8k/fmimage_8687.fw",
2962 };
2963
2964 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
2965 {
2966 PCI_VDEVICE(MARVELL, 0x2a2b),
2967 .driver_data = (unsigned long)&di_8687,
2968 }, {
2969 PCI_VDEVICE(MARVELL, 0x2a30),
2970 .driver_data = (unsigned long)&di_8687,
2971 }, {
2972 },
2973 };
2974 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
2975
2976 static int __devinit mwl8k_probe(struct pci_dev *pdev,
2977 const struct pci_device_id *id)
2978 {
2979 static int printed_version = 0;
2980 struct ieee80211_hw *hw;
2981 struct mwl8k_priv *priv;
2982 int rc;
2983 int i;
2984
2985 if (!printed_version) {
2986 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
2987 printed_version = 1;
2988 }
2989
2990 rc = pci_enable_device(pdev);
2991 if (rc) {
2992 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
2993 MWL8K_NAME);
2994 return rc;
2995 }
2996
2997 rc = pci_request_regions(pdev, MWL8K_NAME);
2998 if (rc) {
2999 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
3000 MWL8K_NAME);
3001 return rc;
3002 }
3003
3004 pci_set_master(pdev);
3005
3006 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
3007 if (hw == NULL) {
3008 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
3009 rc = -ENOMEM;
3010 goto err_free_reg;
3011 }
3012
3013 priv = hw->priv;
3014 priv->hw = hw;
3015 priv->pdev = pdev;
3016 priv->device_info = (void *)id->driver_data;
3017 priv->sniffer_enabled = false;
3018 priv->wmm_enabled = false;
3019 priv->pending_tx_pkts = 0;
3020
3021 SET_IEEE80211_DEV(hw, &pdev->dev);
3022 pci_set_drvdata(pdev, hw);
3023
3024 priv->sram = pci_iomap(pdev, 0, 0x10000);
3025 if (priv->sram == NULL) {
3026 printk(KERN_ERR "%s: Cannot map device SRAM\n",
3027 wiphy_name(hw->wiphy));
3028 goto err_iounmap;
3029 }
3030
3031 /*
3032 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
3033 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
3034 */
3035 priv->regs = pci_iomap(pdev, 1, 0x10000);
3036 if (priv->regs == NULL) {
3037 priv->regs = pci_iomap(pdev, 2, 0x10000);
3038 if (priv->regs == NULL) {
3039 printk(KERN_ERR "%s: Cannot map device registers\n",
3040 wiphy_name(hw->wiphy));
3041 goto err_iounmap;
3042 }
3043 }
3044
3045 memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels));
3046 priv->band.band = IEEE80211_BAND_2GHZ;
3047 priv->band.channels = priv->channels;
3048 priv->band.n_channels = ARRAY_SIZE(mwl8k_channels);
3049 priv->band.bitrates = priv->rates;
3050 priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates);
3051 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3052
3053 BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates));
3054 memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates));
3055
3056 /*
3057 * Extra headroom is the size of the required DMA header
3058 * minus the size of the smallest 802.11 frame (CTS frame).
3059 */
3060 hw->extra_tx_headroom =
3061 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
3062
3063 hw->channel_change_time = 10;
3064
3065 hw->queues = MWL8K_TX_QUEUES;
3066
3067 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
3068
3069 /* Set rssi and noise values to dBm */
3070 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
3071 hw->vif_data_size = sizeof(struct mwl8k_vif);
3072 priv->vif = NULL;
3073
3074 /* Set default radio state and preamble */
3075 priv->radio_on = 0;
3076 priv->radio_short_preamble = 0;
3077
3078 /* Finalize join worker */
3079 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
3080
3081 /* TX reclaim tasklet */
3082 tasklet_init(&priv->tx_reclaim_task,
3083 mwl8k_tx_reclaim_handler, (unsigned long)hw);
3084 tasklet_disable(&priv->tx_reclaim_task);
3085
3086 /* Power management cookie */
3087 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
3088 if (priv->cookie == NULL)
3089 goto err_iounmap;
3090
3091 rc = mwl8k_rxq_init(hw, 0);
3092 if (rc)
3093 goto err_iounmap;
3094 rxq_refill(hw, 0, INT_MAX);
3095
3096 mutex_init(&priv->fw_mutex);
3097 priv->fw_mutex_owner = NULL;
3098 priv->fw_mutex_depth = 0;
3099 priv->hostcmd_wait = NULL;
3100
3101 spin_lock_init(&priv->tx_lock);
3102
3103 priv->tx_wait = NULL;
3104
3105 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
3106 rc = mwl8k_txq_init(hw, i);
3107 if (rc)
3108 goto err_free_queues;
3109 }
3110
3111 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3112 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3113 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
3114 iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3115
3116 rc = request_irq(priv->pdev->irq, &mwl8k_interrupt,
3117 IRQF_SHARED, MWL8K_NAME, hw);
3118 if (rc) {
3119 printk(KERN_ERR "%s: failed to register IRQ handler\n",
3120 wiphy_name(hw->wiphy));
3121 goto err_free_queues;
3122 }
3123
3124 /* Reset firmware and hardware */
3125 mwl8k_hw_reset(priv);
3126
3127 /* Ask userland hotplug daemon for the device firmware */
3128 rc = mwl8k_request_firmware(priv);
3129 if (rc) {
3130 printk(KERN_ERR "%s: Firmware files not found\n",
3131 wiphy_name(hw->wiphy));
3132 goto err_free_irq;
3133 }
3134
3135 /* Load firmware into hardware */
3136 rc = mwl8k_load_firmware(hw);
3137 if (rc) {
3138 printk(KERN_ERR "%s: Cannot start firmware\n",
3139 wiphy_name(hw->wiphy));
3140 goto err_stop_firmware;
3141 }
3142
3143 /* Reclaim memory once firmware is successfully loaded */
3144 mwl8k_release_firmware(priv);
3145
3146 /*
3147 * Temporarily enable interrupts. Initial firmware host
3148 * commands use interrupts and avoids polling. Disable
3149 * interrupts when done.
3150 */
3151 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3152
3153 /* Get config data, mac addrs etc */
3154 rc = mwl8k_cmd_get_hw_spec(hw);
3155 if (rc) {
3156 printk(KERN_ERR "%s: Cannot initialise firmware\n",
3157 wiphy_name(hw->wiphy));
3158 goto err_stop_firmware;
3159 }
3160
3161 /* Turn radio off */
3162 rc = mwl8k_cmd_802_11_radio_disable(hw);
3163 if (rc) {
3164 printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
3165 goto err_stop_firmware;
3166 }
3167
3168 /* Clear MAC address */
3169 rc = mwl8k_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
3170 if (rc) {
3171 printk(KERN_ERR "%s: Cannot clear MAC address\n",
3172 wiphy_name(hw->wiphy));
3173 goto err_stop_firmware;
3174 }
3175
3176 /* Disable interrupts */
3177 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3178 free_irq(priv->pdev->irq, hw);
3179
3180 rc = ieee80211_register_hw(hw);
3181 if (rc) {
3182 printk(KERN_ERR "%s: Cannot register device\n",
3183 wiphy_name(hw->wiphy));
3184 goto err_stop_firmware;
3185 }
3186
3187 printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
3188 wiphy_name(hw->wiphy), priv->device_info->part_name,
3189 priv->hw_rev, hw->wiphy->perm_addr,
3190 priv->ap_fw ? "AP" : "STA",
3191 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
3192 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
3193
3194 return 0;
3195
3196 err_stop_firmware:
3197 mwl8k_hw_reset(priv);
3198 mwl8k_release_firmware(priv);
3199
3200 err_free_irq:
3201 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3202 free_irq(priv->pdev->irq, hw);
3203
3204 err_free_queues:
3205 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3206 mwl8k_txq_deinit(hw, i);
3207 mwl8k_rxq_deinit(hw, 0);
3208
3209 err_iounmap:
3210 if (priv->cookie != NULL)
3211 pci_free_consistent(priv->pdev, 4,
3212 priv->cookie, priv->cookie_dma);
3213
3214 if (priv->regs != NULL)
3215 pci_iounmap(pdev, priv->regs);
3216
3217 if (priv->sram != NULL)
3218 pci_iounmap(pdev, priv->sram);
3219
3220 pci_set_drvdata(pdev, NULL);
3221 ieee80211_free_hw(hw);
3222
3223 err_free_reg:
3224 pci_release_regions(pdev);
3225 pci_disable_device(pdev);
3226
3227 return rc;
3228 }
3229
3230 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
3231 {
3232 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
3233 }
3234
3235 static void __devexit mwl8k_remove(struct pci_dev *pdev)
3236 {
3237 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
3238 struct mwl8k_priv *priv;
3239 int i;
3240
3241 if (hw == NULL)
3242 return;
3243 priv = hw->priv;
3244
3245 ieee80211_stop_queues(hw);
3246
3247 ieee80211_unregister_hw(hw);
3248
3249 /* Remove tx reclaim tasklet */
3250 tasklet_kill(&priv->tx_reclaim_task);
3251
3252 /* Stop hardware */
3253 mwl8k_hw_reset(priv);
3254
3255 /* Return all skbs to mac80211 */
3256 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3257 mwl8k_txq_reclaim(hw, i, 1);
3258
3259 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3260 mwl8k_txq_deinit(hw, i);
3261
3262 mwl8k_rxq_deinit(hw, 0);
3263
3264 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
3265
3266 pci_iounmap(pdev, priv->regs);
3267 pci_iounmap(pdev, priv->sram);
3268 pci_set_drvdata(pdev, NULL);
3269 ieee80211_free_hw(hw);
3270 pci_release_regions(pdev);
3271 pci_disable_device(pdev);
3272 }
3273
3274 static struct pci_driver mwl8k_driver = {
3275 .name = MWL8K_NAME,
3276 .id_table = mwl8k_pci_id_table,
3277 .probe = mwl8k_probe,
3278 .remove = __devexit_p(mwl8k_remove),
3279 .shutdown = __devexit_p(mwl8k_shutdown),
3280 };
3281
3282 static int __init mwl8k_init(void)
3283 {
3284 return pci_register_driver(&mwl8k_driver);
3285 }
3286
3287 static void __exit mwl8k_exit(void)
3288 {
3289 pci_unregister_driver(&mwl8k_driver);
3290 }
3291
3292 module_init(mwl8k_init);
3293 module_exit(mwl8k_exit);
3294
3295 MODULE_DESCRIPTION(MWL8K_DESC);
3296 MODULE_VERSION(MWL8K_VERSION);
3297 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
3298 MODULE_LICENSE("GPL");
Motorola kernel-slsi