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mac80211: remove struct ieee80211_if_init_conf
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / mwl8k.c
blobc1c6ecd0c5b32202c47e06d480c6027029ebc9c7
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 rxd_ops {
84 int rxd_size;
85 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
86 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
87 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
88 __le16 *qos);
89 };
90
91 struct mwl8k_device_info {
92 char *part_name;
93 char *helper_image;
94 char *fw_image;
95 struct rxd_ops *ap_rxd_ops;
96 };
97
98 struct mwl8k_rx_queue {
99 int rxd_count;
100
101 /* hw receives here */
102 int head;
103
104 /* refill descs here */
105 int tail;
106
107 void *rxd;
108 dma_addr_t rxd_dma;
109 struct {
110 struct sk_buff *skb;
111 DECLARE_PCI_UNMAP_ADDR(dma)
112 } *buf;
113 };
114
115 struct mwl8k_tx_queue {
116 /* hw transmits here */
117 int head;
118
119 /* sw appends here */
120 int tail;
121
122 struct ieee80211_tx_queue_stats stats;
123 struct mwl8k_tx_desc *txd;
124 dma_addr_t txd_dma;
125 struct sk_buff **skb;
126 };
127
128 struct mwl8k_priv {
129 struct ieee80211_hw *hw;
130 struct pci_dev *pdev;
131
132 struct mwl8k_device_info *device_info;
133
134 void __iomem *sram;
135 void __iomem *regs;
136
137 /* firmware */
138 struct firmware *fw_helper;
139 struct firmware *fw_ucode;
140
141 /* hardware/firmware parameters */
142 bool ap_fw;
143 struct rxd_ops *rxd_ops;
144
145 /* firmware access */
146 struct mutex fw_mutex;
147 struct task_struct *fw_mutex_owner;
148 int fw_mutex_depth;
149 struct completion *hostcmd_wait;
150
151 /* lock held over TX and TX reap */
152 spinlock_t tx_lock;
153
154 /* TX quiesce completion, protected by fw_mutex and tx_lock */
155 struct completion *tx_wait;
156
157 struct ieee80211_vif *vif;
158
159 struct ieee80211_channel *current_channel;
160
161 /* power management status cookie from firmware */
162 u32 *cookie;
163 dma_addr_t cookie_dma;
164
165 u16 num_mcaddrs;
166 u8 hw_rev;
167 u32 fw_rev;
168
169 /*
170 * Running count of TX packets in flight, to avoid
171 * iterating over the transmit rings each time.
172 */
173 int pending_tx_pkts;
174
175 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
176 struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES];
177
178 /* PHY parameters */
179 struct ieee80211_supported_band band;
180 struct ieee80211_channel channels[14];
181 struct ieee80211_rate rates[14];
182
183 bool radio_on;
184 bool radio_short_preamble;
185 bool sniffer_enabled;
186 bool wmm_enabled;
187
188 /* XXX need to convert this to handle multiple interfaces */
189 bool capture_beacon;
190 u8 capture_bssid[ETH_ALEN];
191 struct sk_buff *beacon_skb;
192
193 /*
194 * This FJ worker has to be global as it is scheduled from the
195 * RX handler. At this point we don't know which interface it
196 * belongs to until the list of bssids waiting to complete join
197 * is checked.
198 */
199 struct work_struct finalize_join_worker;
200
201 /* Tasklet to reclaim TX descriptors and buffers after tx */
202 struct tasklet_struct tx_reclaim_task;
203 };
204
205 /* Per interface specific private data */
206 struct mwl8k_vif {
207 /* Local MAC address. */
208 u8 mac_addr[ETH_ALEN];
209
210 /* BSSID of AP. */
211 u8 bssid[ETH_ALEN];
212
213 /* Index into station database. Returned by UPDATE_STADB. */
214 u8 peer_id;
215
216 /* Non AMPDU sequence number assigned by driver */
217 u16 seqno;
218 };
219
220 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
221
222 static const struct ieee80211_channel mwl8k_channels[] = {
223 { .center_freq = 2412, .hw_value = 1, },
224 { .center_freq = 2417, .hw_value = 2, },
225 { .center_freq = 2422, .hw_value = 3, },
226 { .center_freq = 2427, .hw_value = 4, },
227 { .center_freq = 2432, .hw_value = 5, },
228 { .center_freq = 2437, .hw_value = 6, },
229 { .center_freq = 2442, .hw_value = 7, },
230 { .center_freq = 2447, .hw_value = 8, },
231 { .center_freq = 2452, .hw_value = 9, },
232 { .center_freq = 2457, .hw_value = 10, },
233 { .center_freq = 2462, .hw_value = 11, },
234 { .center_freq = 2467, .hw_value = 12, },
235 { .center_freq = 2472, .hw_value = 13, },
236 { .center_freq = 2484, .hw_value = 14, },
237 };
238
239 static const struct ieee80211_rate mwl8k_rates[] = {
240 { .bitrate = 10, .hw_value = 2, },
241 { .bitrate = 20, .hw_value = 4, },
242 { .bitrate = 55, .hw_value = 11, },
243 { .bitrate = 110, .hw_value = 22, },
244 { .bitrate = 220, .hw_value = 44, },
245 { .bitrate = 60, .hw_value = 12, },
246 { .bitrate = 90, .hw_value = 18, },
247 { .bitrate = 120, .hw_value = 24, },
248 { .bitrate = 180, .hw_value = 36, },
249 { .bitrate = 240, .hw_value = 48, },
250 { .bitrate = 360, .hw_value = 72, },
251 { .bitrate = 480, .hw_value = 96, },
252 { .bitrate = 540, .hw_value = 108, },
253 { .bitrate = 720, .hw_value = 144, },
254 };
255
256 static const u8 mwl8k_rateids[12] = {
257 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108,
258 };
259
260 /* Set or get info from Firmware */
261 #define MWL8K_CMD_SET 0x0001
262 #define MWL8K_CMD_GET 0x0000
263
264 /* Firmware command codes */
265 #define MWL8K_CMD_CODE_DNLD 0x0001
266 #define MWL8K_CMD_GET_HW_SPEC 0x0003
267 #define MWL8K_CMD_SET_HW_SPEC 0x0004
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_RF_ANTENNA 0x0020
273 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
274 #define MWL8K_CMD_SET_POST_SCAN 0x0108
275 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
276 #define MWL8K_CMD_SET_AID 0x010d
277 #define MWL8K_CMD_SET_RATE 0x0110
278 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
279 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
280 #define MWL8K_CMD_SET_SLOT 0x0114
281 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
282 #define MWL8K_CMD_SET_WMM_MODE 0x0123
283 #define MWL8K_CMD_MIMO_CONFIG 0x0125
284 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
285 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
286 #define MWL8K_CMD_SET_MAC_ADDR 0x0202
287 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
288 #define MWL8K_CMD_UPDATE_STADB 0x1123
289
290 static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
291 {
292 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
293 snprintf(buf, bufsize, "%s", #x);\
294 return buf;\
295 } while (0)
296 switch (cmd & ~0x8000) {
297 MWL8K_CMDNAME(CODE_DNLD);
298 MWL8K_CMDNAME(GET_HW_SPEC);
299 MWL8K_CMDNAME(SET_HW_SPEC);
300 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
301 MWL8K_CMDNAME(GET_STAT);
302 MWL8K_CMDNAME(RADIO_CONTROL);
303 MWL8K_CMDNAME(RF_TX_POWER);
304 MWL8K_CMDNAME(RF_ANTENNA);
305 MWL8K_CMDNAME(SET_PRE_SCAN);
306 MWL8K_CMDNAME(SET_POST_SCAN);
307 MWL8K_CMDNAME(SET_RF_CHANNEL);
308 MWL8K_CMDNAME(SET_AID);
309 MWL8K_CMDNAME(SET_RATE);
310 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
311 MWL8K_CMDNAME(RTS_THRESHOLD);
312 MWL8K_CMDNAME(SET_SLOT);
313 MWL8K_CMDNAME(SET_EDCA_PARAMS);
314 MWL8K_CMDNAME(SET_WMM_MODE);
315 MWL8K_CMDNAME(MIMO_CONFIG);
316 MWL8K_CMDNAME(USE_FIXED_RATE);
317 MWL8K_CMDNAME(ENABLE_SNIFFER);
318 MWL8K_CMDNAME(SET_MAC_ADDR);
319 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
320 MWL8K_CMDNAME(UPDATE_STADB);
321 default:
322 snprintf(buf, bufsize, "0x%x", cmd);
323 }
324 #undef MWL8K_CMDNAME
325
326 return buf;
327 }
328
329 /* Hardware and firmware reset */
330 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
331 {
332 iowrite32(MWL8K_H2A_INT_RESET,
333 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
334 iowrite32(MWL8K_H2A_INT_RESET,
335 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
336 msleep(20);
337 }
338
339 /* Release fw image */
340 static void mwl8k_release_fw(struct firmware **fw)
341 {
342 if (*fw == NULL)
343 return;
344 release_firmware(*fw);
345 *fw = NULL;
346 }
347
348 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
349 {
350 mwl8k_release_fw(&priv->fw_ucode);
351 mwl8k_release_fw(&priv->fw_helper);
352 }
353
354 /* Request fw image */
355 static int mwl8k_request_fw(struct mwl8k_priv *priv,
356 const char *fname, struct firmware **fw)
357 {
358 /* release current image */
359 if (*fw != NULL)
360 mwl8k_release_fw(fw);
361
362 return request_firmware((const struct firmware **)fw,
363 fname, &priv->pdev->dev);
364 }
365
366 static int mwl8k_request_firmware(struct mwl8k_priv *priv)
367 {
368 struct mwl8k_device_info *di = priv->device_info;
369 int rc;
370
371 if (di->helper_image != NULL) {
372 rc = mwl8k_request_fw(priv, di->helper_image, &priv->fw_helper);
373 if (rc) {
374 printk(KERN_ERR "%s: Error requesting helper "
375 "firmware file %s\n", pci_name(priv->pdev),
376 di->helper_image);
377 return rc;
378 }
379 }
380
381 rc = mwl8k_request_fw(priv, di->fw_image, &priv->fw_ucode);
382 if (rc) {
383 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
384 pci_name(priv->pdev), di->fw_image);
385 mwl8k_release_fw(&priv->fw_helper);
386 return rc;
387 }
388
389 return 0;
390 }
391
392 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
393 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
394
395 struct mwl8k_cmd_pkt {
396 __le16 code;
397 __le16 length;
398 __le16 seq_num;
399 __le16 result;
400 char payload[0];
401 } __attribute__((packed));
402
403 /*
404 * Firmware loading.
405 */
406 static int
407 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
408 {
409 void __iomem *regs = priv->regs;
410 dma_addr_t dma_addr;
411 int loops;
412
413 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
414 if (pci_dma_mapping_error(priv->pdev, dma_addr))
415 return -ENOMEM;
416
417 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
418 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
419 iowrite32(MWL8K_H2A_INT_DOORBELL,
420 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
421 iowrite32(MWL8K_H2A_INT_DUMMY,
422 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
423
424 loops = 1000;
425 do {
426 u32 int_code;
427
428 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
429 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
430 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
431 break;
432 }
433
434 cond_resched();
435 udelay(1);
436 } while (--loops);
437
438 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
439
440 return loops ? 0 : -ETIMEDOUT;
441 }
442
443 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
444 const u8 *data, size_t length)
445 {
446 struct mwl8k_cmd_pkt *cmd;
447 int done;
448 int rc = 0;
449
450 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
451 if (cmd == NULL)
452 return -ENOMEM;
453
454 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
455 cmd->seq_num = 0;
456 cmd->result = 0;
457
458 done = 0;
459 while (length) {
460 int block_size = length > 256 ? 256 : length;
461
462 memcpy(cmd->payload, data + done, block_size);
463 cmd->length = cpu_to_le16(block_size);
464
465 rc = mwl8k_send_fw_load_cmd(priv, cmd,
466 sizeof(*cmd) + block_size);
467 if (rc)
468 break;
469
470 done += block_size;
471 length -= block_size;
472 }
473
474 if (!rc) {
475 cmd->length = 0;
476 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
477 }
478
479 kfree(cmd);
480
481 return rc;
482 }
483
484 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
485 const u8 *data, size_t length)
486 {
487 unsigned char *buffer;
488 int may_continue, rc = 0;
489 u32 done, prev_block_size;
490
491 buffer = kmalloc(1024, GFP_KERNEL);
492 if (buffer == NULL)
493 return -ENOMEM;
494
495 done = 0;
496 prev_block_size = 0;
497 may_continue = 1000;
498 while (may_continue > 0) {
499 u32 block_size;
500
501 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
502 if (block_size & 1) {
503 block_size &= ~1;
504 may_continue--;
505 } else {
506 done += prev_block_size;
507 length -= prev_block_size;
508 }
509
510 if (block_size > 1024 || block_size > length) {
511 rc = -EOVERFLOW;
512 break;
513 }
514
515 if (length == 0) {
516 rc = 0;
517 break;
518 }
519
520 if (block_size == 0) {
521 rc = -EPROTO;
522 may_continue--;
523 udelay(1);
524 continue;
525 }
526
527 prev_block_size = block_size;
528 memcpy(buffer, data + done, block_size);
529
530 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
531 if (rc)
532 break;
533 }
534
535 if (!rc && length != 0)
536 rc = -EREMOTEIO;
537
538 kfree(buffer);
539
540 return rc;
541 }
542
543 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
544 {
545 struct mwl8k_priv *priv = hw->priv;
546 struct firmware *fw = priv->fw_ucode;
547 int rc;
548 int loops;
549
550 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
551 struct firmware *helper = priv->fw_helper;
552
553 if (helper == NULL) {
554 printk(KERN_ERR "%s: helper image needed but none "
555 "given\n", pci_name(priv->pdev));
556 return -EINVAL;
557 }
558
559 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
560 if (rc) {
561 printk(KERN_ERR "%s: unable to load firmware "
562 "helper image\n", pci_name(priv->pdev));
563 return rc;
564 }
565 msleep(5);
566
567 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
568 } else {
569 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
570 }
571
572 if (rc) {
573 printk(KERN_ERR "%s: unable to load firmware image\n",
574 pci_name(priv->pdev));
575 return rc;
576 }
577
578 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
579
580 loops = 500000;
581 do {
582 u32 ready_code;
583
584 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
585 if (ready_code == MWL8K_FWAP_READY) {
586 priv->ap_fw = 1;
587 break;
588 } else if (ready_code == MWL8K_FWSTA_READY) {
589 priv->ap_fw = 0;
590 break;
591 }
592
593 cond_resched();
594 udelay(1);
595 } while (--loops);
596
597 return loops ? 0 : -ETIMEDOUT;
598 }
599
600
601 /*
602 * Defines shared between transmission and reception.
603 */
604 /* HT control fields for firmware */
605 struct ewc_ht_info {
606 __le16 control1;
607 __le16 control2;
608 __le16 control3;
609 } __attribute__((packed));
610
611 /* Firmware Station database operations */
612 #define MWL8K_STA_DB_ADD_ENTRY 0
613 #define MWL8K_STA_DB_MODIFY_ENTRY 1
614 #define MWL8K_STA_DB_DEL_ENTRY 2
615 #define MWL8K_STA_DB_FLUSH 3
616
617 /* Peer Entry flags - used to define the type of the peer node */
618 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
619
620 struct peer_capability_info {
621 /* Peer type - AP vs. STA. */
622 __u8 peer_type;
623
624 /* Basic 802.11 capabilities from assoc resp. */
625 __le16 basic_caps;
626
627 /* Set if peer supports 802.11n high throughput (HT). */
628 __u8 ht_support;
629
630 /* Valid if HT is supported. */
631 __le16 ht_caps;
632 __u8 extended_ht_caps;
633 struct ewc_ht_info ewc_info;
634
635 /* Legacy rate table. Intersection of our rates and peer rates. */
636 __u8 legacy_rates[12];
637
638 /* HT rate table. Intersection of our rates and peer rates. */
639 __u8 ht_rates[16];
640 __u8 pad[16];
641
642 /* If set, interoperability mode, no proprietary extensions. */
643 __u8 interop;
644 __u8 pad2;
645 __u8 station_id;
646 __le16 amsdu_enabled;
647 } __attribute__((packed));
648
649 /* DMA header used by firmware and hardware. */
650 struct mwl8k_dma_data {
651 __le16 fwlen;
652 struct ieee80211_hdr wh;
653 char data[0];
654 } __attribute__((packed));
655
656 /* Routines to add/remove DMA header from skb. */
657 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
658 {
659 struct mwl8k_dma_data *tr;
660 int hdrlen;
661
662 tr = (struct mwl8k_dma_data *)skb->data;
663 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
664
665 if (hdrlen != sizeof(tr->wh)) {
666 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
667 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
668 *((__le16 *)(tr->data - 2)) = qos;
669 } else {
670 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
671 }
672 }
673
674 if (hdrlen != sizeof(*tr))
675 skb_pull(skb, sizeof(*tr) - hdrlen);
676 }
677
678 static inline void mwl8k_add_dma_header(struct sk_buff *skb)
679 {
680 struct ieee80211_hdr *wh;
681 int hdrlen;
682 struct mwl8k_dma_data *tr;
683
684 /*
685 * Add a firmware DMA header; the firmware requires that we
686 * present a 2-byte payload length followed by a 4-address
687 * header (without QoS field), followed (optionally) by any
688 * WEP/ExtIV header (but only filled in for CCMP).
689 */
690 wh = (struct ieee80211_hdr *)skb->data;
691
692 hdrlen = ieee80211_hdrlen(wh->frame_control);
693 if (hdrlen != sizeof(*tr))
694 skb_push(skb, sizeof(*tr) - hdrlen);
695
696 if (ieee80211_is_data_qos(wh->frame_control))
697 hdrlen -= 2;
698
699 tr = (struct mwl8k_dma_data *)skb->data;
700 if (wh != &tr->wh)
701 memmove(&tr->wh, wh, hdrlen);
702 if (hdrlen != sizeof(tr->wh))
703 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
704
705 /*
706 * Firmware length is the length of the fully formed "802.11
707 * payload". That is, everything except for the 802.11 header.
708 * This includes all crypto material including the MIC.
709 */
710 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr));
711 }
712
713
714 /*
715 * Packet reception for 88w8366 AP firmware.
716 */
717 struct mwl8k_rxd_8366_ap {
718 __le16 pkt_len;
719 __u8 sq2;
720 __u8 rate;
721 __le32 pkt_phys_addr;
722 __le32 next_rxd_phys_addr;
723 __le16 qos_control;
724 __le16 htsig2;
725 __le32 hw_rssi_info;
726 __le32 hw_noise_floor_info;
727 __u8 noise_floor;
728 __u8 pad0[3];
729 __u8 rssi;
730 __u8 rx_status;
731 __u8 channel;
732 __u8 rx_ctrl;
733 } __attribute__((packed));
734
735 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
736 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
737 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
738
739 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
740
741 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
742 {
743 struct mwl8k_rxd_8366_ap *rxd = _rxd;
744
745 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
746 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
747 }
748
749 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
750 {
751 struct mwl8k_rxd_8366_ap *rxd = _rxd;
752
753 rxd->pkt_len = cpu_to_le16(len);
754 rxd->pkt_phys_addr = cpu_to_le32(addr);
755 wmb();
756 rxd->rx_ctrl = 0;
757 }
758
759 static int
760 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
761 __le16 *qos)
762 {
763 struct mwl8k_rxd_8366_ap *rxd = _rxd;
764
765 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
766 return -1;
767 rmb();
768
769 memset(status, 0, sizeof(*status));
770
771 status->signal = -rxd->rssi;
772 status->noise = -rxd->noise_floor;
773
774 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
775 status->flag |= RX_FLAG_HT;
776 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
777 status->flag |= RX_FLAG_40MHZ;
778 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
779 } else {
780 int i;
781
782 for (i = 0; i < ARRAY_SIZE(mwl8k_rates); i++) {
783 if (mwl8k_rates[i].hw_value == rxd->rate) {
784 status->rate_idx = i;
785 break;
786 }
787 }
788 }
789
790 status->band = IEEE80211_BAND_2GHZ;
791 status->freq = ieee80211_channel_to_frequency(rxd->channel);
792
793 *qos = rxd->qos_control;
794
795 return le16_to_cpu(rxd->pkt_len);
796 }
797
798 static struct rxd_ops rxd_8366_ap_ops = {
799 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
800 .rxd_init = mwl8k_rxd_8366_ap_init,
801 .rxd_refill = mwl8k_rxd_8366_ap_refill,
802 .rxd_process = mwl8k_rxd_8366_ap_process,
803 };
804
805 /*
806 * Packet reception for STA firmware.
807 */
808 struct mwl8k_rxd_sta {
809 __le16 pkt_len;
810 __u8 link_quality;
811 __u8 noise_level;
812 __le32 pkt_phys_addr;
813 __le32 next_rxd_phys_addr;
814 __le16 qos_control;
815 __le16 rate_info;
816 __le32 pad0[4];
817 __u8 rssi;
818 __u8 channel;
819 __le16 pad1;
820 __u8 rx_ctrl;
821 __u8 rx_status;
822 __u8 pad2[2];
823 } __attribute__((packed));
824
825 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
826 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
827 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
828 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
829 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
830 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
831
832 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
833
834 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
835 {
836 struct mwl8k_rxd_sta *rxd = _rxd;
837
838 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
839 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
840 }
841
842 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
843 {
844 struct mwl8k_rxd_sta *rxd = _rxd;
845
846 rxd->pkt_len = cpu_to_le16(len);
847 rxd->pkt_phys_addr = cpu_to_le32(addr);
848 wmb();
849 rxd->rx_ctrl = 0;
850 }
851
852 static int
853 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
854 __le16 *qos)
855 {
856 struct mwl8k_rxd_sta *rxd = _rxd;
857 u16 rate_info;
858
859 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
860 return -1;
861 rmb();
862
863 rate_info = le16_to_cpu(rxd->rate_info);
864
865 memset(status, 0, sizeof(*status));
866
867 status->signal = -rxd->rssi;
868 status->noise = -rxd->noise_level;
869 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
870 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
871
872 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
873 status->flag |= RX_FLAG_SHORTPRE;
874 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
875 status->flag |= RX_FLAG_40MHZ;
876 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
877 status->flag |= RX_FLAG_SHORT_GI;
878 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
879 status->flag |= RX_FLAG_HT;
880
881 status->band = IEEE80211_BAND_2GHZ;
882 status->freq = ieee80211_channel_to_frequency(rxd->channel);
883
884 *qos = rxd->qos_control;
885
886 return le16_to_cpu(rxd->pkt_len);
887 }
888
889 static struct rxd_ops rxd_sta_ops = {
890 .rxd_size = sizeof(struct mwl8k_rxd_sta),
891 .rxd_init = mwl8k_rxd_sta_init,
892 .rxd_refill = mwl8k_rxd_sta_refill,
893 .rxd_process = mwl8k_rxd_sta_process,
894 };
895
896
897 #define MWL8K_RX_DESCS 256
898 #define MWL8K_RX_MAXSZ 3800
899
900 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
901 {
902 struct mwl8k_priv *priv = hw->priv;
903 struct mwl8k_rx_queue *rxq = priv->rxq + index;
904 int size;
905 int i;
906
907 rxq->rxd_count = 0;
908 rxq->head = 0;
909 rxq->tail = 0;
910
911 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
912
913 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
914 if (rxq->rxd == NULL) {
915 printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
916 wiphy_name(hw->wiphy));
917 return -ENOMEM;
918 }
919 memset(rxq->rxd, 0, size);
920
921 rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
922 if (rxq->buf == NULL) {
923 printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
924 wiphy_name(hw->wiphy));
925 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
926 return -ENOMEM;
927 }
928 memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
929
930 for (i = 0; i < MWL8K_RX_DESCS; i++) {
931 int desc_size;
932 void *rxd;
933 int nexti;
934 dma_addr_t next_dma_addr;
935
936 desc_size = priv->rxd_ops->rxd_size;
937 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
938
939 nexti = i + 1;
940 if (nexti == MWL8K_RX_DESCS)
941 nexti = 0;
942 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
943
944 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
945 }
946
947 return 0;
948 }
949
950 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
951 {
952 struct mwl8k_priv *priv = hw->priv;
953 struct mwl8k_rx_queue *rxq = priv->rxq + index;
954 int refilled;
955
956 refilled = 0;
957 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
958 struct sk_buff *skb;
959 dma_addr_t addr;
960 int rx;
961 void *rxd;
962
963 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
964 if (skb == NULL)
965 break;
966
967 addr = pci_map_single(priv->pdev, skb->data,
968 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
969
970 rxq->rxd_count++;
971 rx = rxq->tail++;
972 if (rxq->tail == MWL8K_RX_DESCS)
973 rxq->tail = 0;
974 rxq->buf[rx].skb = skb;
975 pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
976
977 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
978 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
979
980 refilled++;
981 }
982
983 return refilled;
984 }
985
986 /* Must be called only when the card's reception is completely halted */
987 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
988 {
989 struct mwl8k_priv *priv = hw->priv;
990 struct mwl8k_rx_queue *rxq = priv->rxq + index;
991 int i;
992
993 for (i = 0; i < MWL8K_RX_DESCS; i++) {
994 if (rxq->buf[i].skb != NULL) {
995 pci_unmap_single(priv->pdev,
996 pci_unmap_addr(&rxq->buf[i], dma),
997 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
998 pci_unmap_addr_set(&rxq->buf[i], dma, 0);
999
1000 kfree_skb(rxq->buf[i].skb);
1001 rxq->buf[i].skb = NULL;
1002 }
1003 }
1004
1005 kfree(rxq->buf);
1006 rxq->buf = NULL;
1007
1008 pci_free_consistent(priv->pdev,
1009 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1010 rxq->rxd, rxq->rxd_dma);
1011 rxq->rxd = NULL;
1012 }
1013
1014
1015 /*
1016 * Scan a list of BSSIDs to process for finalize join.
1017 * Allows for extension to process multiple BSSIDs.
1018 */
1019 static inline int
1020 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1021 {
1022 return priv->capture_beacon &&
1023 ieee80211_is_beacon(wh->frame_control) &&
1024 !compare_ether_addr(wh->addr3, priv->capture_bssid);
1025 }
1026
1027 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1028 struct sk_buff *skb)
1029 {
1030 struct mwl8k_priv *priv = hw->priv;
1031
1032 priv->capture_beacon = false;
1033 memset(priv->capture_bssid, 0, ETH_ALEN);
1034
1035 /*
1036 * Use GFP_ATOMIC as rxq_process is called from
1037 * the primary interrupt handler, memory allocation call
1038 * must not sleep.
1039 */
1040 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1041 if (priv->beacon_skb != NULL)
1042 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1043 }
1044
1045 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1046 {
1047 struct mwl8k_priv *priv = hw->priv;
1048 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1049 int processed;
1050
1051 processed = 0;
1052 while (rxq->rxd_count && limit--) {
1053 struct sk_buff *skb;
1054 void *rxd;
1055 int pkt_len;
1056 struct ieee80211_rx_status status;
1057 __le16 qos;
1058
1059 skb = rxq->buf[rxq->head].skb;
1060 if (skb == NULL)
1061 break;
1062
1063 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1064
1065 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos);
1066 if (pkt_len < 0)
1067 break;
1068
1069 rxq->buf[rxq->head].skb = NULL;
1070
1071 pci_unmap_single(priv->pdev,
1072 pci_unmap_addr(&rxq->buf[rxq->head], dma),
1073 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1074 pci_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1075
1076 rxq->head++;
1077 if (rxq->head == MWL8K_RX_DESCS)
1078 rxq->head = 0;
1079
1080 rxq->rxd_count--;
1081
1082 skb_put(skb, pkt_len);
1083 mwl8k_remove_dma_header(skb, qos);
1084
1085 /*
1086 * Check for a pending join operation. Save a
1087 * copy of the beacon and schedule a tasklet to
1088 * send a FINALIZE_JOIN command to the firmware.
1089 */
1090 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1091 mwl8k_save_beacon(hw, skb);
1092
1093 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1094 ieee80211_rx_irqsafe(hw, skb);
1095
1096 processed++;
1097 }
1098
1099 return processed;
1100 }
1101
1102
1103 /*
1104 * Packet transmission.
1105 */
1106
1107 #define MWL8K_TXD_STATUS_OK 0x00000001
1108 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1109 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1110 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1111 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1112
1113 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1114 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1115 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1116 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1117 #define MWL8K_QOS_EOSP 0x0010
1118
1119 struct mwl8k_tx_desc {
1120 __le32 status;
1121 __u8 data_rate;
1122 __u8 tx_priority;
1123 __le16 qos_control;
1124 __le32 pkt_phys_addr;
1125 __le16 pkt_len;
1126 __u8 dest_MAC_addr[ETH_ALEN];
1127 __le32 next_txd_phys_addr;
1128 __le32 reserved;
1129 __le16 rate_info;
1130 __u8 peer_id;
1131 __u8 tx_frag_cnt;
1132 } __attribute__((packed));
1133
1134 #define MWL8K_TX_DESCS 128
1135
1136 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1137 {
1138 struct mwl8k_priv *priv = hw->priv;
1139 struct mwl8k_tx_queue *txq = priv->txq + index;
1140 int size;
1141 int i;
1142
1143 memset(&txq->stats, 0, sizeof(struct ieee80211_tx_queue_stats));
1144 txq->stats.limit = MWL8K_TX_DESCS;
1145 txq->head = 0;
1146 txq->tail = 0;
1147
1148 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1149
1150 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1151 if (txq->txd == NULL) {
1152 printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
1153 wiphy_name(hw->wiphy));
1154 return -ENOMEM;
1155 }
1156 memset(txq->txd, 0, size);
1157
1158 txq->skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->skb), GFP_KERNEL);
1159 if (txq->skb == NULL) {
1160 printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
1161 wiphy_name(hw->wiphy));
1162 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1163 return -ENOMEM;
1164 }
1165 memset(txq->skb, 0, MWL8K_TX_DESCS * sizeof(*txq->skb));
1166
1167 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1168 struct mwl8k_tx_desc *tx_desc;
1169 int nexti;
1170
1171 tx_desc = txq->txd + i;
1172 nexti = (i + 1) % MWL8K_TX_DESCS;
1173
1174 tx_desc->status = 0;
1175 tx_desc->next_txd_phys_addr =
1176 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1177 }
1178
1179 return 0;
1180 }
1181
1182 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1183 {
1184 iowrite32(MWL8K_H2A_INT_PPA_READY,
1185 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1186 iowrite32(MWL8K_H2A_INT_DUMMY,
1187 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1188 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1189 }
1190
1191 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1192 {
1193 struct mwl8k_priv *priv = hw->priv;
1194 int i;
1195
1196 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
1197 struct mwl8k_tx_queue *txq = priv->txq + i;
1198 int fw_owned = 0;
1199 int drv_owned = 0;
1200 int unused = 0;
1201 int desc;
1202
1203 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1204 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1205 u32 status;
1206
1207 status = le32_to_cpu(tx_desc->status);
1208 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1209 fw_owned++;
1210 else
1211 drv_owned++;
1212
1213 if (tx_desc->pkt_len == 0)
1214 unused++;
1215 }
1216
1217 printk(KERN_ERR "%s: txq[%d] len=%d head=%d tail=%d "
1218 "fw_owned=%d drv_owned=%d unused=%d\n",
1219 wiphy_name(hw->wiphy), i,
1220 txq->stats.len, txq->head, txq->tail,
1221 fw_owned, drv_owned, unused);
1222 }
1223 }
1224
1225 /*
1226 * Must be called with priv->fw_mutex held and tx queues stopped.
1227 */
1228 #define MWL8K_TX_WAIT_TIMEOUT_MS 1000
1229
1230 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1231 {
1232 struct mwl8k_priv *priv = hw->priv;
1233 DECLARE_COMPLETION_ONSTACK(tx_wait);
1234 int retry;
1235 int rc;
1236
1237 might_sleep();
1238
1239 /*
1240 * The TX queues are stopped at this point, so this test
1241 * doesn't need to take ->tx_lock.
1242 */
1243 if (!priv->pending_tx_pkts)
1244 return 0;
1245
1246 retry = 0;
1247 rc = 0;
1248
1249 spin_lock_bh(&priv->tx_lock);
1250 priv->tx_wait = &tx_wait;
1251 while (!rc) {
1252 int oldcount;
1253 unsigned long timeout;
1254
1255 oldcount = priv->pending_tx_pkts;
1256
1257 spin_unlock_bh(&priv->tx_lock);
1258 timeout = wait_for_completion_timeout(&tx_wait,
1259 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1260 spin_lock_bh(&priv->tx_lock);
1261
1262 if (timeout) {
1263 WARN_ON(priv->pending_tx_pkts);
1264 if (retry) {
1265 printk(KERN_NOTICE "%s: tx rings drained\n",
1266 wiphy_name(hw->wiphy));
1267 }
1268 break;
1269 }
1270
1271 if (priv->pending_tx_pkts < oldcount) {
1272 printk(KERN_NOTICE "%s: timeout waiting for tx "
1273 "rings to drain (%d -> %d pkts), retrying\n",
1274 wiphy_name(hw->wiphy), oldcount,
1275 priv->pending_tx_pkts);
1276 retry = 1;
1277 continue;
1278 }
1279
1280 priv->tx_wait = NULL;
1281
1282 printk(KERN_ERR "%s: tx rings stuck for %d ms\n",
1283 wiphy_name(hw->wiphy), MWL8K_TX_WAIT_TIMEOUT_MS);
1284 mwl8k_dump_tx_rings(hw);
1285
1286 rc = -ETIMEDOUT;
1287 }
1288 spin_unlock_bh(&priv->tx_lock);
1289
1290 return rc;
1291 }
1292
1293 #define MWL8K_TXD_SUCCESS(status) \
1294 ((status) & (MWL8K_TXD_STATUS_OK | \
1295 MWL8K_TXD_STATUS_OK_RETRY | \
1296 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1297
1298 static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force)
1299 {
1300 struct mwl8k_priv *priv = hw->priv;
1301 struct mwl8k_tx_queue *txq = priv->txq + index;
1302 int wake = 0;
1303
1304 while (txq->stats.len > 0) {
1305 int tx;
1306 struct mwl8k_tx_desc *tx_desc;
1307 unsigned long addr;
1308 int size;
1309 struct sk_buff *skb;
1310 struct ieee80211_tx_info *info;
1311 u32 status;
1312
1313 tx = txq->head;
1314 tx_desc = txq->txd + tx;
1315
1316 status = le32_to_cpu(tx_desc->status);
1317
1318 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1319 if (!force)
1320 break;
1321 tx_desc->status &=
1322 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1323 }
1324
1325 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1326 BUG_ON(txq->stats.len == 0);
1327 txq->stats.len--;
1328 priv->pending_tx_pkts--;
1329
1330 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1331 size = le16_to_cpu(tx_desc->pkt_len);
1332 skb = txq->skb[tx];
1333 txq->skb[tx] = NULL;
1334
1335 BUG_ON(skb == NULL);
1336 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1337
1338 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1339
1340 /* Mark descriptor as unused */
1341 tx_desc->pkt_phys_addr = 0;
1342 tx_desc->pkt_len = 0;
1343
1344 info = IEEE80211_SKB_CB(skb);
1345 ieee80211_tx_info_clear_status(info);
1346 if (MWL8K_TXD_SUCCESS(status))
1347 info->flags |= IEEE80211_TX_STAT_ACK;
1348
1349 ieee80211_tx_status_irqsafe(hw, skb);
1350
1351 wake = 1;
1352 }
1353
1354 if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
1355 ieee80211_wake_queue(hw, index);
1356 }
1357
1358 /* must be called only when the card's transmit is completely halted */
1359 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1360 {
1361 struct mwl8k_priv *priv = hw->priv;
1362 struct mwl8k_tx_queue *txq = priv->txq + index;
1363
1364 mwl8k_txq_reclaim(hw, index, 1);
1365
1366 kfree(txq->skb);
1367 txq->skb = NULL;
1368
1369 pci_free_consistent(priv->pdev,
1370 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1371 txq->txd, txq->txd_dma);
1372 txq->txd = NULL;
1373 }
1374
1375 static int
1376 mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1377 {
1378 struct mwl8k_priv *priv = hw->priv;
1379 struct ieee80211_tx_info *tx_info;
1380 struct mwl8k_vif *mwl8k_vif;
1381 struct ieee80211_hdr *wh;
1382 struct mwl8k_tx_queue *txq;
1383 struct mwl8k_tx_desc *tx;
1384 dma_addr_t dma;
1385 u32 txstatus;
1386 u8 txdatarate;
1387 u16 qos;
1388
1389 wh = (struct ieee80211_hdr *)skb->data;
1390 if (ieee80211_is_data_qos(wh->frame_control))
1391 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1392 else
1393 qos = 0;
1394
1395 mwl8k_add_dma_header(skb);
1396 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1397
1398 tx_info = IEEE80211_SKB_CB(skb);
1399 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1400
1401 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1402 u16 seqno = mwl8k_vif->seqno;
1403
1404 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1405 wh->seq_ctrl |= cpu_to_le16(seqno << 4);
1406 mwl8k_vif->seqno = seqno++ % 4096;
1407 }
1408
1409 /* Setup firmware control bit fields for each frame type. */
1410 txstatus = 0;
1411 txdatarate = 0;
1412 if (ieee80211_is_mgmt(wh->frame_control) ||
1413 ieee80211_is_ctl(wh->frame_control)) {
1414 txdatarate = 0;
1415 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1416 } else if (ieee80211_is_data(wh->frame_control)) {
1417 txdatarate = 1;
1418 if (is_multicast_ether_addr(wh->addr1))
1419 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1420
1421 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1422 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1423 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1424 else
1425 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1426 }
1427
1428 dma = pci_map_single(priv->pdev, skb->data,
1429 skb->len, PCI_DMA_TODEVICE);
1430
1431 if (pci_dma_mapping_error(priv->pdev, dma)) {
1432 printk(KERN_DEBUG "%s: failed to dma map skb, "
1433 "dropping TX frame.\n", wiphy_name(hw->wiphy));
1434 dev_kfree_skb(skb);
1435 return NETDEV_TX_OK;
1436 }
1437
1438 spin_lock_bh(&priv->tx_lock);
1439
1440 txq = priv->txq + index;
1441
1442 BUG_ON(txq->skb[txq->tail] != NULL);
1443 txq->skb[txq->tail] = skb;
1444
1445 tx = txq->txd + txq->tail;
1446 tx->data_rate = txdatarate;
1447 tx->tx_priority = index;
1448 tx->qos_control = cpu_to_le16(qos);
1449 tx->pkt_phys_addr = cpu_to_le32(dma);
1450 tx->pkt_len = cpu_to_le16(skb->len);
1451 tx->rate_info = 0;
1452 tx->peer_id = mwl8k_vif->peer_id;
1453 wmb();
1454 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1455
1456 txq->stats.count++;
1457 txq->stats.len++;
1458 priv->pending_tx_pkts++;
1459
1460 txq->tail++;
1461 if (txq->tail == MWL8K_TX_DESCS)
1462 txq->tail = 0;
1463
1464 if (txq->head == txq->tail)
1465 ieee80211_stop_queue(hw, index);
1466
1467 mwl8k_tx_start(priv);
1468
1469 spin_unlock_bh(&priv->tx_lock);
1470
1471 return NETDEV_TX_OK;
1472 }
1473
1474
1475 /*
1476 * Firmware access.
1477 *
1478 * We have the following requirements for issuing firmware commands:
1479 * - Some commands require that the packet transmit path is idle when
1480 * the command is issued. (For simplicity, we'll just quiesce the
1481 * transmit path for every command.)
1482 * - There are certain sequences of commands that need to be issued to
1483 * the hardware sequentially, with no other intervening commands.
1484 *
1485 * This leads to an implementation of a "firmware lock" as a mutex that
1486 * can be taken recursively, and which is taken by both the low-level
1487 * command submission function (mwl8k_post_cmd) as well as any users of
1488 * that function that require issuing of an atomic sequence of commands,
1489 * and quiesces the transmit path whenever it's taken.
1490 */
1491 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1492 {
1493 struct mwl8k_priv *priv = hw->priv;
1494
1495 if (priv->fw_mutex_owner != current) {
1496 int rc;
1497
1498 mutex_lock(&priv->fw_mutex);
1499 ieee80211_stop_queues(hw);
1500
1501 rc = mwl8k_tx_wait_empty(hw);
1502 if (rc) {
1503 ieee80211_wake_queues(hw);
1504 mutex_unlock(&priv->fw_mutex);
1505
1506 return rc;
1507 }
1508
1509 priv->fw_mutex_owner = current;
1510 }
1511
1512 priv->fw_mutex_depth++;
1513
1514 return 0;
1515 }
1516
1517 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1518 {
1519 struct mwl8k_priv *priv = hw->priv;
1520
1521 if (!--priv->fw_mutex_depth) {
1522 ieee80211_wake_queues(hw);
1523 priv->fw_mutex_owner = NULL;
1524 mutex_unlock(&priv->fw_mutex);
1525 }
1526 }
1527
1528
1529 /*
1530 * Command processing.
1531 */
1532
1533 /* Timeout firmware commands after 10s */
1534 #define MWL8K_CMD_TIMEOUT_MS 10000
1535
1536 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1537 {
1538 DECLARE_COMPLETION_ONSTACK(cmd_wait);
1539 struct mwl8k_priv *priv = hw->priv;
1540 void __iomem *regs = priv->regs;
1541 dma_addr_t dma_addr;
1542 unsigned int dma_size;
1543 int rc;
1544 unsigned long timeout = 0;
1545 u8 buf[32];
1546
1547 cmd->result = 0xffff;
1548 dma_size = le16_to_cpu(cmd->length);
1549 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1550 PCI_DMA_BIDIRECTIONAL);
1551 if (pci_dma_mapping_error(priv->pdev, dma_addr))
1552 return -ENOMEM;
1553
1554 rc = mwl8k_fw_lock(hw);
1555 if (rc) {
1556 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1557 PCI_DMA_BIDIRECTIONAL);
1558 return rc;
1559 }
1560
1561 priv->hostcmd_wait = &cmd_wait;
1562 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1563 iowrite32(MWL8K_H2A_INT_DOORBELL,
1564 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1565 iowrite32(MWL8K_H2A_INT_DUMMY,
1566 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1567
1568 timeout = wait_for_completion_timeout(&cmd_wait,
1569 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1570
1571 priv->hostcmd_wait = NULL;
1572
1573 mwl8k_fw_unlock(hw);
1574
1575 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1576 PCI_DMA_BIDIRECTIONAL);
1577
1578 if (!timeout) {
1579 printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
1580 wiphy_name(hw->wiphy),
1581 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1582 MWL8K_CMD_TIMEOUT_MS);
1583 rc = -ETIMEDOUT;
1584 } else {
1585 int ms;
1586
1587 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
1588
1589 rc = cmd->result ? -EINVAL : 0;
1590 if (rc)
1591 printk(KERN_ERR "%s: Command %s error 0x%x\n",
1592 wiphy_name(hw->wiphy),
1593 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1594 le16_to_cpu(cmd->result));
1595 else if (ms > 2000)
1596 printk(KERN_NOTICE "%s: Command %s took %d ms\n",
1597 wiphy_name(hw->wiphy),
1598 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1599 ms);
1600 }
1601
1602 return rc;
1603 }
1604
1605 /*
1606 * CMD_GET_HW_SPEC (STA version).
1607 */
1608 struct mwl8k_cmd_get_hw_spec_sta {
1609 struct mwl8k_cmd_pkt header;
1610 __u8 hw_rev;
1611 __u8 host_interface;
1612 __le16 num_mcaddrs;
1613 __u8 perm_addr[ETH_ALEN];
1614 __le16 region_code;
1615 __le32 fw_rev;
1616 __le32 ps_cookie;
1617 __le32 caps;
1618 __u8 mcs_bitmap[16];
1619 __le32 rx_queue_ptr;
1620 __le32 num_tx_queues;
1621 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1622 __le32 caps2;
1623 __le32 num_tx_desc_per_queue;
1624 __le32 total_rxd;
1625 } __attribute__((packed));
1626
1627 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
1628 {
1629 struct mwl8k_priv *priv = hw->priv;
1630 struct mwl8k_cmd_get_hw_spec_sta *cmd;
1631 int rc;
1632 int i;
1633
1634 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1635 if (cmd == NULL)
1636 return -ENOMEM;
1637
1638 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1639 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1640
1641 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1642 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1643 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1644 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1645 for (i = 0; i < MWL8K_TX_QUEUES; i++)
1646 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1647 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1648 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1649
1650 rc = mwl8k_post_cmd(hw, &cmd->header);
1651
1652 if (!rc) {
1653 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1654 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1655 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1656 priv->hw_rev = cmd->hw_rev;
1657 }
1658
1659 kfree(cmd);
1660 return rc;
1661 }
1662
1663 /*
1664 * CMD_GET_HW_SPEC (AP version).
1665 */
1666 struct mwl8k_cmd_get_hw_spec_ap {
1667 struct mwl8k_cmd_pkt header;
1668 __u8 hw_rev;
1669 __u8 host_interface;
1670 __le16 num_wcb;
1671 __le16 num_mcaddrs;
1672 __u8 perm_addr[ETH_ALEN];
1673 __le16 region_code;
1674 __le16 num_antenna;
1675 __le32 fw_rev;
1676 __le32 wcbbase0;
1677 __le32 rxwrptr;
1678 __le32 rxrdptr;
1679 __le32 ps_cookie;
1680 __le32 wcbbase1;
1681 __le32 wcbbase2;
1682 __le32 wcbbase3;
1683 } __attribute__((packed));
1684
1685 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
1686 {
1687 struct mwl8k_priv *priv = hw->priv;
1688 struct mwl8k_cmd_get_hw_spec_ap *cmd;
1689 int rc;
1690
1691 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1692 if (cmd == NULL)
1693 return -ENOMEM;
1694
1695 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1696 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1697
1698 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1699 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1700
1701 rc = mwl8k_post_cmd(hw, &cmd->header);
1702
1703 if (!rc) {
1704 int off;
1705
1706 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1707 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
1708 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
1709 priv->hw_rev = cmd->hw_rev;
1710
1711 off = le32_to_cpu(cmd->wcbbase0) & 0xffff;
1712 iowrite32(cpu_to_le32(priv->txq[0].txd_dma), priv->sram + off);
1713
1714 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
1715 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1716
1717 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
1718 iowrite32(cpu_to_le32(priv->rxq[0].rxd_dma), priv->sram + off);
1719
1720 off = le32_to_cpu(cmd->wcbbase1) & 0xffff;
1721 iowrite32(cpu_to_le32(priv->txq[1].txd_dma), priv->sram + off);
1722
1723 off = le32_to_cpu(cmd->wcbbase2) & 0xffff;
1724 iowrite32(cpu_to_le32(priv->txq[2].txd_dma), priv->sram + off);
1725
1726 off = le32_to_cpu(cmd->wcbbase3) & 0xffff;
1727 iowrite32(cpu_to_le32(priv->txq[3].txd_dma), priv->sram + off);
1728 }
1729
1730 kfree(cmd);
1731 return rc;
1732 }
1733
1734 /*
1735 * CMD_SET_HW_SPEC.
1736 */
1737 struct mwl8k_cmd_set_hw_spec {
1738 struct mwl8k_cmd_pkt header;
1739 __u8 hw_rev;
1740 __u8 host_interface;
1741 __le16 num_mcaddrs;
1742 __u8 perm_addr[ETH_ALEN];
1743 __le16 region_code;
1744 __le32 fw_rev;
1745 __le32 ps_cookie;
1746 __le32 caps;
1747 __le32 rx_queue_ptr;
1748 __le32 num_tx_queues;
1749 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1750 __le32 flags;
1751 __le32 num_tx_desc_per_queue;
1752 __le32 total_rxd;
1753 } __attribute__((packed));
1754
1755 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
1756
1757 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
1758 {
1759 struct mwl8k_priv *priv = hw->priv;
1760 struct mwl8k_cmd_set_hw_spec *cmd;
1761 int rc;
1762 int i;
1763
1764 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1765 if (cmd == NULL)
1766 return -ENOMEM;
1767
1768 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
1769 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1770
1771 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1772 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
1773 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
1774 for (i = 0; i < MWL8K_TX_QUEUES; i++)
1775 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
1776 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT);
1777 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1778 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
1779
1780 rc = mwl8k_post_cmd(hw, &cmd->header);
1781 kfree(cmd);
1782
1783 return rc;
1784 }
1785
1786 /*
1787 * CMD_MAC_MULTICAST_ADR.
1788 */
1789 struct mwl8k_cmd_mac_multicast_adr {
1790 struct mwl8k_cmd_pkt header;
1791 __le16 action;
1792 __le16 numaddr;
1793 __u8 addr[0][ETH_ALEN];
1794 };
1795
1796 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
1797 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
1798 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
1799 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
1800
1801 static struct mwl8k_cmd_pkt *
1802 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
1803 int mc_count, struct dev_addr_list *mclist)
1804 {
1805 struct mwl8k_priv *priv = hw->priv;
1806 struct mwl8k_cmd_mac_multicast_adr *cmd;
1807 int size;
1808
1809 if (allmulti || mc_count > priv->num_mcaddrs) {
1810 allmulti = 1;
1811 mc_count = 0;
1812 }
1813
1814 size = sizeof(*cmd) + mc_count * ETH_ALEN;
1815
1816 cmd = kzalloc(size, GFP_ATOMIC);
1817 if (cmd == NULL)
1818 return NULL;
1819
1820 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
1821 cmd->header.length = cpu_to_le16(size);
1822 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
1823 MWL8K_ENABLE_RX_BROADCAST);
1824
1825 if (allmulti) {
1826 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
1827 } else if (mc_count) {
1828 int i;
1829
1830 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
1831 cmd->numaddr = cpu_to_le16(mc_count);
1832 for (i = 0; i < mc_count && mclist; i++) {
1833 if (mclist->da_addrlen != ETH_ALEN) {
1834 kfree(cmd);
1835 return NULL;
1836 }
1837 memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
1838 mclist = mclist->next;
1839 }
1840 }
1841
1842 return &cmd->header;
1843 }
1844
1845 /*
1846 * CMD_GET_STAT.
1847 */
1848 struct mwl8k_cmd_get_stat {
1849 struct mwl8k_cmd_pkt header;
1850 __le32 stats[64];
1851 } __attribute__((packed));
1852
1853 #define MWL8K_STAT_ACK_FAILURE 9
1854 #define MWL8K_STAT_RTS_FAILURE 12
1855 #define MWL8K_STAT_FCS_ERROR 24
1856 #define MWL8K_STAT_RTS_SUCCESS 11
1857
1858 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
1859 struct ieee80211_low_level_stats *stats)
1860 {
1861 struct mwl8k_cmd_get_stat *cmd;
1862 int rc;
1863
1864 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1865 if (cmd == NULL)
1866 return -ENOMEM;
1867
1868 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
1869 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1870
1871 rc = mwl8k_post_cmd(hw, &cmd->header);
1872 if (!rc) {
1873 stats->dot11ACKFailureCount =
1874 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
1875 stats->dot11RTSFailureCount =
1876 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
1877 stats->dot11FCSErrorCount =
1878 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
1879 stats->dot11RTSSuccessCount =
1880 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
1881 }
1882 kfree(cmd);
1883
1884 return rc;
1885 }
1886
1887 /*
1888 * CMD_RADIO_CONTROL.
1889 */
1890 struct mwl8k_cmd_radio_control {
1891 struct mwl8k_cmd_pkt header;
1892 __le16 action;
1893 __le16 control;
1894 __le16 radio_on;
1895 } __attribute__((packed));
1896
1897 static int
1898 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
1899 {
1900 struct mwl8k_priv *priv = hw->priv;
1901 struct mwl8k_cmd_radio_control *cmd;
1902 int rc;
1903
1904 if (enable == priv->radio_on && !force)
1905 return 0;
1906
1907 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1908 if (cmd == NULL)
1909 return -ENOMEM;
1910
1911 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
1912 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1913 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1914 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
1915 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
1916
1917 rc = mwl8k_post_cmd(hw, &cmd->header);
1918 kfree(cmd);
1919
1920 if (!rc)
1921 priv->radio_on = enable;
1922
1923 return rc;
1924 }
1925
1926 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
1927 {
1928 return mwl8k_cmd_radio_control(hw, 0, 0);
1929 }
1930
1931 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
1932 {
1933 return mwl8k_cmd_radio_control(hw, 1, 0);
1934 }
1935
1936 static int
1937 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
1938 {
1939 struct mwl8k_priv *priv = hw->priv;
1940
1941 priv->radio_short_preamble = short_preamble;
1942
1943 return mwl8k_cmd_radio_control(hw, 1, 1);
1944 }
1945
1946 /*
1947 * CMD_RF_TX_POWER.
1948 */
1949 #define MWL8K_TX_POWER_LEVEL_TOTAL 8
1950
1951 struct mwl8k_cmd_rf_tx_power {
1952 struct mwl8k_cmd_pkt header;
1953 __le16 action;
1954 __le16 support_level;
1955 __le16 current_level;
1956 __le16 reserved;
1957 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
1958 } __attribute__((packed));
1959
1960 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
1961 {
1962 struct mwl8k_cmd_rf_tx_power *cmd;
1963 int rc;
1964
1965 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1966 if (cmd == NULL)
1967 return -ENOMEM;
1968
1969 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
1970 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1971 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1972 cmd->support_level = cpu_to_le16(dBm);
1973
1974 rc = mwl8k_post_cmd(hw, &cmd->header);
1975 kfree(cmd);
1976
1977 return rc;
1978 }
1979
1980 /*
1981 * CMD_RF_ANTENNA.
1982 */
1983 struct mwl8k_cmd_rf_antenna {
1984 struct mwl8k_cmd_pkt header;
1985 __le16 antenna;
1986 __le16 mode;
1987 } __attribute__((packed));
1988
1989 #define MWL8K_RF_ANTENNA_RX 1
1990 #define MWL8K_RF_ANTENNA_TX 2
1991
1992 static int
1993 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
1994 {
1995 struct mwl8k_cmd_rf_antenna *cmd;
1996 int rc;
1997
1998 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1999 if (cmd == NULL)
2000 return -ENOMEM;
2001
2002 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2003 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2004 cmd->antenna = cpu_to_le16(antenna);
2005 cmd->mode = cpu_to_le16(mask);
2006
2007 rc = mwl8k_post_cmd(hw, &cmd->header);
2008 kfree(cmd);
2009
2010 return rc;
2011 }
2012
2013 /*
2014 * CMD_SET_PRE_SCAN.
2015 */
2016 struct mwl8k_cmd_set_pre_scan {
2017 struct mwl8k_cmd_pkt header;
2018 } __attribute__((packed));
2019
2020 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2021 {
2022 struct mwl8k_cmd_set_pre_scan *cmd;
2023 int rc;
2024
2025 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2026 if (cmd == NULL)
2027 return -ENOMEM;
2028
2029 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2030 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2031
2032 rc = mwl8k_post_cmd(hw, &cmd->header);
2033 kfree(cmd);
2034
2035 return rc;
2036 }
2037
2038 /*
2039 * CMD_SET_POST_SCAN.
2040 */
2041 struct mwl8k_cmd_set_post_scan {
2042 struct mwl8k_cmd_pkt header;
2043 __le32 isibss;
2044 __u8 bssid[ETH_ALEN];
2045 } __attribute__((packed));
2046
2047 static int
2048 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 *mac)
2049 {
2050 struct mwl8k_cmd_set_post_scan *cmd;
2051 int rc;
2052
2053 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2054 if (cmd == NULL)
2055 return -ENOMEM;
2056
2057 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2058 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2059 cmd->isibss = 0;
2060 memcpy(cmd->bssid, mac, ETH_ALEN);
2061
2062 rc = mwl8k_post_cmd(hw, &cmd->header);
2063 kfree(cmd);
2064
2065 return rc;
2066 }
2067
2068 /*
2069 * CMD_SET_RF_CHANNEL.
2070 */
2071 struct mwl8k_cmd_set_rf_channel {
2072 struct mwl8k_cmd_pkt header;
2073 __le16 action;
2074 __u8 current_channel;
2075 __le32 channel_flags;
2076 } __attribute__((packed));
2077
2078 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2079 struct ieee80211_channel *channel)
2080 {
2081 struct mwl8k_cmd_set_rf_channel *cmd;
2082 int rc;
2083
2084 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2085 if (cmd == NULL)
2086 return -ENOMEM;
2087
2088 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2089 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2090 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2091 cmd->current_channel = channel->hw_value;
2092 if (channel->band == IEEE80211_BAND_2GHZ)
2093 cmd->channel_flags = cpu_to_le32(0x00000081);
2094 else
2095 cmd->channel_flags = cpu_to_le32(0x00000000);
2096
2097 rc = mwl8k_post_cmd(hw, &cmd->header);
2098 kfree(cmd);
2099
2100 return rc;
2101 }
2102
2103 /*
2104 * CMD_SET_AID.
2105 */
2106 #define MWL8K_FRAME_PROT_DISABLED 0x00
2107 #define MWL8K_FRAME_PROT_11G 0x07
2108 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2109 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2110
2111 struct mwl8k_cmd_update_set_aid {
2112 struct mwl8k_cmd_pkt header;
2113 __le16 aid;
2114
2115 /* AP's MAC address (BSSID) */
2116 __u8 bssid[ETH_ALEN];
2117 __le16 protection_mode;
2118 __u8 supp_rates[14];
2119 } __attribute__((packed));
2120
2121 static int
2122 mwl8k_cmd_set_aid(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2123 {
2124 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2125 struct mwl8k_cmd_update_set_aid *cmd;
2126 u16 prot_mode;
2127 int rc;
2128
2129 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2130 if (cmd == NULL)
2131 return -ENOMEM;
2132
2133 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2134 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2135 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
2136
2137 memcpy(cmd->bssid, mv_vif->bssid, ETH_ALEN);
2138
2139 if (vif->bss_conf.use_cts_prot) {
2140 prot_mode = MWL8K_FRAME_PROT_11G;
2141 } else {
2142 switch (vif->bss_conf.ht_operation_mode &
2143 IEEE80211_HT_OP_MODE_PROTECTION) {
2144 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2145 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2146 break;
2147 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2148 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2149 break;
2150 default:
2151 prot_mode = MWL8K_FRAME_PROT_DISABLED;
2152 break;
2153 }
2154 }
2155 cmd->protection_mode = cpu_to_le16(prot_mode);
2156
2157 memcpy(cmd->supp_rates, mwl8k_rateids, sizeof(mwl8k_rateids));
2158
2159 rc = mwl8k_post_cmd(hw, &cmd->header);
2160 kfree(cmd);
2161
2162 return rc;
2163 }
2164
2165 /*
2166 * CMD_SET_RATE.
2167 */
2168 struct mwl8k_cmd_set_rate {
2169 struct mwl8k_cmd_pkt header;
2170 __u8 legacy_rates[14];
2171
2172 /* Bitmap for supported MCS codes. */
2173 __u8 mcs_set[16];
2174 __u8 reserved[16];
2175 } __attribute__((packed));
2176
2177 static int
2178 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
2179 {
2180 struct mwl8k_cmd_set_rate *cmd;
2181 int rc;
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_SET_RATE);
2188 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2189 memcpy(cmd->legacy_rates, mwl8k_rateids, sizeof(mwl8k_rateids));
2190
2191 rc = mwl8k_post_cmd(hw, &cmd->header);
2192 kfree(cmd);
2193
2194 return rc;
2195 }
2196
2197 /*
2198 * CMD_FINALIZE_JOIN.
2199 */
2200 #define MWL8K_FJ_BEACON_MAXLEN 128
2201
2202 struct mwl8k_cmd_finalize_join {
2203 struct mwl8k_cmd_pkt header;
2204 __le32 sleep_interval; /* Number of beacon periods to sleep */
2205 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2206 } __attribute__((packed));
2207
2208 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
2209 int framelen, int dtim)
2210 {
2211 struct mwl8k_cmd_finalize_join *cmd;
2212 struct ieee80211_mgmt *payload = frame;
2213 int payload_len;
2214 int rc;
2215
2216 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2217 if (cmd == NULL)
2218 return -ENOMEM;
2219
2220 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2221 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2222 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
2223
2224 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
2225 if (payload_len < 0)
2226 payload_len = 0;
2227 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2228 payload_len = MWL8K_FJ_BEACON_MAXLEN;
2229
2230 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2231
2232 rc = mwl8k_post_cmd(hw, &cmd->header);
2233 kfree(cmd);
2234
2235 return rc;
2236 }
2237
2238 /*
2239 * CMD_SET_RTS_THRESHOLD.
2240 */
2241 struct mwl8k_cmd_set_rts_threshold {
2242 struct mwl8k_cmd_pkt header;
2243 __le16 action;
2244 __le16 threshold;
2245 } __attribute__((packed));
2246
2247 static int mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw,
2248 u16 action, u16 threshold)
2249 {
2250 struct mwl8k_cmd_set_rts_threshold *cmd;
2251 int rc;
2252
2253 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2254 if (cmd == NULL)
2255 return -ENOMEM;
2256
2257 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
2258 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2259 cmd->action = cpu_to_le16(action);
2260 cmd->threshold = cpu_to_le16(threshold);
2261
2262 rc = mwl8k_post_cmd(hw, &cmd->header);
2263 kfree(cmd);
2264
2265 return rc;
2266 }
2267
2268 /*
2269 * CMD_SET_SLOT.
2270 */
2271 struct mwl8k_cmd_set_slot {
2272 struct mwl8k_cmd_pkt header;
2273 __le16 action;
2274 __u8 short_slot;
2275 } __attribute__((packed));
2276
2277 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
2278 {
2279 struct mwl8k_cmd_set_slot *cmd;
2280 int rc;
2281
2282 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2283 if (cmd == NULL)
2284 return -ENOMEM;
2285
2286 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
2287 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2288 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2289 cmd->short_slot = short_slot_time;
2290
2291 rc = mwl8k_post_cmd(hw, &cmd->header);
2292 kfree(cmd);
2293
2294 return rc;
2295 }
2296
2297 /*
2298 * CMD_SET_EDCA_PARAMS.
2299 */
2300 struct mwl8k_cmd_set_edca_params {
2301 struct mwl8k_cmd_pkt header;
2302
2303 /* See MWL8K_SET_EDCA_XXX below */
2304 __le16 action;
2305
2306 /* TX opportunity in units of 32 us */
2307 __le16 txop;
2308
2309 union {
2310 struct {
2311 /* Log exponent of max contention period: 0...15 */
2312 __le32 log_cw_max;
2313
2314 /* Log exponent of min contention period: 0...15 */
2315 __le32 log_cw_min;
2316
2317 /* Adaptive interframe spacing in units of 32us */
2318 __u8 aifs;
2319
2320 /* TX queue to configure */
2321 __u8 txq;
2322 } ap;
2323 struct {
2324 /* Log exponent of max contention period: 0...15 */
2325 __u8 log_cw_max;
2326
2327 /* Log exponent of min contention period: 0...15 */
2328 __u8 log_cw_min;
2329
2330 /* Adaptive interframe spacing in units of 32us */
2331 __u8 aifs;
2332
2333 /* TX queue to configure */
2334 __u8 txq;
2335 } sta;
2336 };
2337 } __attribute__((packed));
2338
2339 #define MWL8K_SET_EDCA_CW 0x01
2340 #define MWL8K_SET_EDCA_TXOP 0x02
2341 #define MWL8K_SET_EDCA_AIFS 0x04
2342
2343 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2344 MWL8K_SET_EDCA_TXOP | \
2345 MWL8K_SET_EDCA_AIFS)
2346
2347 static int
2348 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2349 __u16 cw_min, __u16 cw_max,
2350 __u8 aifs, __u16 txop)
2351 {
2352 struct mwl8k_priv *priv = hw->priv;
2353 struct mwl8k_cmd_set_edca_params *cmd;
2354 int rc;
2355
2356 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2357 if (cmd == NULL)
2358 return -ENOMEM;
2359
2360 /*
2361 * Queues 0 (BE) and 1 (BK) are swapped in hardware for
2362 * this call.
2363 */
2364 qnum ^= !(qnum >> 1);
2365
2366 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2367 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2368 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2369 cmd->txop = cpu_to_le16(txop);
2370 if (priv->ap_fw) {
2371 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
2372 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
2373 cmd->ap.aifs = aifs;
2374 cmd->ap.txq = qnum;
2375 } else {
2376 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
2377 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
2378 cmd->sta.aifs = aifs;
2379 cmd->sta.txq = qnum;
2380 }
2381
2382 rc = mwl8k_post_cmd(hw, &cmd->header);
2383 kfree(cmd);
2384
2385 return rc;
2386 }
2387
2388 /*
2389 * CMD_SET_WMM_MODE.
2390 */
2391 struct mwl8k_cmd_set_wmm_mode {
2392 struct mwl8k_cmd_pkt header;
2393 __le16 action;
2394 } __attribute__((packed));
2395
2396 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
2397 {
2398 struct mwl8k_priv *priv = hw->priv;
2399 struct mwl8k_cmd_set_wmm_mode *cmd;
2400 int rc;
2401
2402 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2403 if (cmd == NULL)
2404 return -ENOMEM;
2405
2406 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
2407 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2408 cmd->action = cpu_to_le16(!!enable);
2409
2410 rc = mwl8k_post_cmd(hw, &cmd->header);
2411 kfree(cmd);
2412
2413 if (!rc)
2414 priv->wmm_enabled = enable;
2415
2416 return rc;
2417 }
2418
2419 /*
2420 * CMD_MIMO_CONFIG.
2421 */
2422 struct mwl8k_cmd_mimo_config {
2423 struct mwl8k_cmd_pkt header;
2424 __le32 action;
2425 __u8 rx_antenna_map;
2426 __u8 tx_antenna_map;
2427 } __attribute__((packed));
2428
2429 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
2430 {
2431 struct mwl8k_cmd_mimo_config *cmd;
2432 int rc;
2433
2434 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2435 if (cmd == NULL)
2436 return -ENOMEM;
2437
2438 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
2439 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2440 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
2441 cmd->rx_antenna_map = rx;
2442 cmd->tx_antenna_map = tx;
2443
2444 rc = mwl8k_post_cmd(hw, &cmd->header);
2445 kfree(cmd);
2446
2447 return rc;
2448 }
2449
2450 /*
2451 * CMD_USE_FIXED_RATE.
2452 */
2453 #define MWL8K_RATE_TABLE_SIZE 8
2454 #define MWL8K_UCAST_RATE 0
2455 #define MWL8K_USE_AUTO_RATE 0x0002
2456
2457 struct mwl8k_rate_entry {
2458 /* Set to 1 if HT rate, 0 if legacy. */
2459 __le32 is_ht_rate;
2460
2461 /* Set to 1 to use retry_count field. */
2462 __le32 enable_retry;
2463
2464 /* Specified legacy rate or MCS. */
2465 __le32 rate;
2466
2467 /* Number of allowed retries. */
2468 __le32 retry_count;
2469 } __attribute__((packed));
2470
2471 struct mwl8k_rate_table {
2472 /* 1 to allow specified rate and below */
2473 __le32 allow_rate_drop;
2474 __le32 num_rates;
2475 struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE];
2476 } __attribute__((packed));
2477
2478 struct mwl8k_cmd_use_fixed_rate {
2479 struct mwl8k_cmd_pkt header;
2480 __le32 action;
2481 struct mwl8k_rate_table rate_table;
2482
2483 /* Unicast, Broadcast or Multicast */
2484 __le32 rate_type;
2485 __le32 reserved1;
2486 __le32 reserved2;
2487 } __attribute__((packed));
2488
2489 static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw,
2490 u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table)
2491 {
2492 struct mwl8k_cmd_use_fixed_rate *cmd;
2493 int count;
2494 int rc;
2495
2496 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2497 if (cmd == NULL)
2498 return -ENOMEM;
2499
2500 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2501 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2502
2503 cmd->action = cpu_to_le32(action);
2504 cmd->rate_type = cpu_to_le32(rate_type);
2505
2506 if (rate_table != NULL) {
2507 /*
2508 * Copy over each field manually so that endian
2509 * conversion can be done.
2510 */
2511 cmd->rate_table.allow_rate_drop =
2512 cpu_to_le32(rate_table->allow_rate_drop);
2513 cmd->rate_table.num_rates =
2514 cpu_to_le32(rate_table->num_rates);
2515
2516 for (count = 0; count < rate_table->num_rates; count++) {
2517 struct mwl8k_rate_entry *dst =
2518 &cmd->rate_table.rate_entry[count];
2519 struct mwl8k_rate_entry *src =
2520 &rate_table->rate_entry[count];
2521
2522 dst->is_ht_rate = cpu_to_le32(src->is_ht_rate);
2523 dst->enable_retry = cpu_to_le32(src->enable_retry);
2524 dst->rate = cpu_to_le32(src->rate);
2525 dst->retry_count = cpu_to_le32(src->retry_count);
2526 }
2527 }
2528
2529 rc = mwl8k_post_cmd(hw, &cmd->header);
2530 kfree(cmd);
2531
2532 return rc;
2533 }
2534
2535 /*
2536 * CMD_ENABLE_SNIFFER.
2537 */
2538 struct mwl8k_cmd_enable_sniffer {
2539 struct mwl8k_cmd_pkt header;
2540 __le32 action;
2541 } __attribute__((packed));
2542
2543 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
2544 {
2545 struct mwl8k_cmd_enable_sniffer *cmd;
2546 int rc;
2547
2548 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2549 if (cmd == NULL)
2550 return -ENOMEM;
2551
2552 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
2553 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2554 cmd->action = cpu_to_le32(!!enable);
2555
2556 rc = mwl8k_post_cmd(hw, &cmd->header);
2557 kfree(cmd);
2558
2559 return rc;
2560 }
2561
2562 /*
2563 * CMD_SET_MAC_ADDR.
2564 */
2565 struct mwl8k_cmd_set_mac_addr {
2566 struct mwl8k_cmd_pkt header;
2567 union {
2568 struct {
2569 __le16 mac_type;
2570 __u8 mac_addr[ETH_ALEN];
2571 } mbss;
2572 __u8 mac_addr[ETH_ALEN];
2573 };
2574 } __attribute__((packed));
2575
2576 static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, u8 *mac)
2577 {
2578 struct mwl8k_priv *priv = hw->priv;
2579 struct mwl8k_cmd_set_mac_addr *cmd;
2580 int rc;
2581
2582 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2583 if (cmd == NULL)
2584 return -ENOMEM;
2585
2586 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
2587 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2588 if (priv->ap_fw) {
2589 cmd->mbss.mac_type = 0;
2590 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
2591 } else {
2592 memcpy(cmd->mac_addr, mac, ETH_ALEN);
2593 }
2594
2595 rc = mwl8k_post_cmd(hw, &cmd->header);
2596 kfree(cmd);
2597
2598 return rc;
2599 }
2600
2601 /*
2602 * CMD_SET_RATEADAPT_MODE.
2603 */
2604 struct mwl8k_cmd_set_rate_adapt_mode {
2605 struct mwl8k_cmd_pkt header;
2606 __le16 action;
2607 __le16 mode;
2608 } __attribute__((packed));
2609
2610 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
2611 {
2612 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
2613 int rc;
2614
2615 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2616 if (cmd == NULL)
2617 return -ENOMEM;
2618
2619 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
2620 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2621 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2622 cmd->mode = cpu_to_le16(mode);
2623
2624 rc = mwl8k_post_cmd(hw, &cmd->header);
2625 kfree(cmd);
2626
2627 return rc;
2628 }
2629
2630 /*
2631 * CMD_UPDATE_STADB.
2632 */
2633 struct mwl8k_cmd_update_stadb {
2634 struct mwl8k_cmd_pkt header;
2635
2636 /* See STADB_ACTION_TYPE */
2637 __le32 action;
2638
2639 /* Peer MAC address */
2640 __u8 peer_addr[ETH_ALEN];
2641
2642 __le32 reserved;
2643
2644 /* Peer info - valid during add/update. */
2645 struct peer_capability_info peer_info;
2646 } __attribute__((packed));
2647
2648 static int mwl8k_cmd_update_stadb(struct ieee80211_hw *hw,
2649 struct ieee80211_vif *vif, __u32 action)
2650 {
2651 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2652 struct mwl8k_cmd_update_stadb *cmd;
2653 struct peer_capability_info *peer_info;
2654 int rc;
2655
2656 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2657 if (cmd == NULL)
2658 return -ENOMEM;
2659
2660 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
2661 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2662
2663 cmd->action = cpu_to_le32(action);
2664 peer_info = &cmd->peer_info;
2665 memcpy(cmd->peer_addr, mv_vif->bssid, ETH_ALEN);
2666
2667 switch (action) {
2668 case MWL8K_STA_DB_ADD_ENTRY:
2669 case MWL8K_STA_DB_MODIFY_ENTRY:
2670 /* Build peer_info block */
2671 peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
2672 peer_info->basic_caps =
2673 cpu_to_le16(vif->bss_conf.assoc_capability);
2674 memcpy(peer_info->legacy_rates, mwl8k_rateids,
2675 sizeof(mwl8k_rateids));
2676 peer_info->interop = 1;
2677 peer_info->amsdu_enabled = 0;
2678
2679 rc = mwl8k_post_cmd(hw, &cmd->header);
2680 if (rc == 0)
2681 mv_vif->peer_id = peer_info->station_id;
2682
2683 break;
2684
2685 case MWL8K_STA_DB_DEL_ENTRY:
2686 case MWL8K_STA_DB_FLUSH:
2687 default:
2688 rc = mwl8k_post_cmd(hw, &cmd->header);
2689 if (rc == 0)
2690 mv_vif->peer_id = 0;
2691 break;
2692 }
2693 kfree(cmd);
2694
2695 return rc;
2696 }
2697
2698
2699 /*
2700 * Interrupt handling.
2701 */
2702 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
2703 {
2704 struct ieee80211_hw *hw = dev_id;
2705 struct mwl8k_priv *priv = hw->priv;
2706 u32 status;
2707
2708 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
2709 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
2710
2711 if (!status)
2712 return IRQ_NONE;
2713
2714 if (status & MWL8K_A2H_INT_TX_DONE)
2715 tasklet_schedule(&priv->tx_reclaim_task);
2716
2717 if (status & MWL8K_A2H_INT_RX_READY) {
2718 while (rxq_process(hw, 0, 1))
2719 rxq_refill(hw, 0, 1);
2720 }
2721
2722 if (status & MWL8K_A2H_INT_OPC_DONE) {
2723 if (priv->hostcmd_wait != NULL)
2724 complete(priv->hostcmd_wait);
2725 }
2726
2727 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
2728 if (!mutex_is_locked(&priv->fw_mutex) &&
2729 priv->radio_on && priv->pending_tx_pkts)
2730 mwl8k_tx_start(priv);
2731 }
2732
2733 return IRQ_HANDLED;
2734 }
2735
2736
2737 /*
2738 * Core driver operations.
2739 */
2740 static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2741 {
2742 struct mwl8k_priv *priv = hw->priv;
2743 int index = skb_get_queue_mapping(skb);
2744 int rc;
2745
2746 if (priv->current_channel == NULL) {
2747 printk(KERN_DEBUG "%s: dropped TX frame since radio "
2748 "disabled\n", wiphy_name(hw->wiphy));
2749 dev_kfree_skb(skb);
2750 return NETDEV_TX_OK;
2751 }
2752
2753 rc = mwl8k_txq_xmit(hw, index, skb);
2754
2755 return rc;
2756 }
2757
2758 static int mwl8k_start(struct ieee80211_hw *hw)
2759 {
2760 struct mwl8k_priv *priv = hw->priv;
2761 int rc;
2762
2763 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
2764 IRQF_SHARED, MWL8K_NAME, hw);
2765 if (rc) {
2766 printk(KERN_ERR "%s: failed to register IRQ handler\n",
2767 wiphy_name(hw->wiphy));
2768 return -EIO;
2769 }
2770
2771 /* Enable tx reclaim tasklet */
2772 tasklet_enable(&priv->tx_reclaim_task);
2773
2774 /* Enable interrupts */
2775 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2776
2777 rc = mwl8k_fw_lock(hw);
2778 if (!rc) {
2779 rc = mwl8k_cmd_radio_enable(hw);
2780
2781 if (!priv->ap_fw) {
2782 if (!rc)
2783 rc = mwl8k_cmd_enable_sniffer(hw, 0);
2784
2785 if (!rc)
2786 rc = mwl8k_cmd_set_pre_scan(hw);
2787
2788 if (!rc)
2789 rc = mwl8k_cmd_set_post_scan(hw,
2790 "\x00\x00\x00\x00\x00\x00");
2791 }
2792
2793 if (!rc)
2794 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
2795
2796 if (!rc)
2797 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
2798
2799 mwl8k_fw_unlock(hw);
2800 }
2801
2802 if (rc) {
2803 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2804 free_irq(priv->pdev->irq, hw);
2805 tasklet_disable(&priv->tx_reclaim_task);
2806 }
2807
2808 return rc;
2809 }
2810
2811 static void mwl8k_stop(struct ieee80211_hw *hw)
2812 {
2813 struct mwl8k_priv *priv = hw->priv;
2814 int i;
2815
2816 mwl8k_cmd_radio_disable(hw);
2817
2818 ieee80211_stop_queues(hw);
2819
2820 /* Disable interrupts */
2821 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2822 free_irq(priv->pdev->irq, hw);
2823
2824 /* Stop finalize join worker */
2825 cancel_work_sync(&priv->finalize_join_worker);
2826 if (priv->beacon_skb != NULL)
2827 dev_kfree_skb(priv->beacon_skb);
2828
2829 /* Stop tx reclaim tasklet */
2830 tasklet_disable(&priv->tx_reclaim_task);
2831
2832 /* Return all skbs to mac80211 */
2833 for (i = 0; i < MWL8K_TX_QUEUES; i++)
2834 mwl8k_txq_reclaim(hw, i, 1);
2835 }
2836
2837 static int mwl8k_add_interface(struct ieee80211_hw *hw,
2838 struct ieee80211_vif *vif)
2839 {
2840 struct mwl8k_priv *priv = hw->priv;
2841 struct mwl8k_vif *mwl8k_vif;
2842
2843 /*
2844 * We only support one active interface at a time.
2845 */
2846 if (priv->vif != NULL)
2847 return -EBUSY;
2848
2849 /*
2850 * We only support managed interfaces for now.
2851 */
2852 if (vif->type != NL80211_IFTYPE_STATION)
2853 return -EINVAL;
2854
2855 /*
2856 * Reject interface creation if sniffer mode is active, as
2857 * STA operation is mutually exclusive with hardware sniffer
2858 * mode.
2859 */
2860 if (priv->sniffer_enabled) {
2861 printk(KERN_INFO "%s: unable to create STA "
2862 "interface due to sniffer mode being enabled\n",
2863 wiphy_name(hw->wiphy));
2864 return -EINVAL;
2865 }
2866
2867 /* Clean out driver private area */
2868 mwl8k_vif = MWL8K_VIF(vif);
2869 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
2870
2871 /* Set and save the mac address */
2872 mwl8k_cmd_set_mac_addr(hw, vif->addr);
2873 memcpy(mwl8k_vif->mac_addr, vif->addr, ETH_ALEN);
2874
2875 /* Set Initial sequence number to zero */
2876 mwl8k_vif->seqno = 0;
2877
2878 priv->vif = vif;
2879 priv->current_channel = NULL;
2880
2881 return 0;
2882 }
2883
2884 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
2885 struct ieee80211_vif *vif)
2886 {
2887 struct mwl8k_priv *priv = hw->priv;
2888
2889 if (priv->vif == NULL)
2890 return;
2891
2892 mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
2893
2894 priv->vif = NULL;
2895 }
2896
2897 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
2898 {
2899 struct ieee80211_conf *conf = &hw->conf;
2900 struct mwl8k_priv *priv = hw->priv;
2901 int rc;
2902
2903 if (conf->flags & IEEE80211_CONF_IDLE) {
2904 mwl8k_cmd_radio_disable(hw);
2905 priv->current_channel = NULL;
2906 return 0;
2907 }
2908
2909 rc = mwl8k_fw_lock(hw);
2910 if (rc)
2911 return rc;
2912
2913 rc = mwl8k_cmd_radio_enable(hw);
2914 if (rc)
2915 goto out;
2916
2917 rc = mwl8k_cmd_set_rf_channel(hw, conf->channel);
2918 if (rc)
2919 goto out;
2920
2921 priv->current_channel = conf->channel;
2922
2923 if (conf->power_level > 18)
2924 conf->power_level = 18;
2925 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
2926 if (rc)
2927 goto out;
2928
2929 if (priv->ap_fw) {
2930 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x7);
2931 if (!rc)
2932 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
2933 } else {
2934 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
2935 }
2936
2937 out:
2938 mwl8k_fw_unlock(hw);
2939
2940 return rc;
2941 }
2942
2943 static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
2944 struct ieee80211_vif *vif,
2945 struct ieee80211_bss_conf *info,
2946 u32 changed)
2947 {
2948 struct mwl8k_priv *priv = hw->priv;
2949 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
2950 int rc;
2951
2952 if ((changed & BSS_CHANGED_ASSOC) == 0)
2953 return;
2954
2955 priv->capture_beacon = false;
2956
2957 rc = mwl8k_fw_lock(hw);
2958 if (rc)
2959 return;
2960
2961 if (vif->bss_conf.assoc) {
2962 memcpy(mwl8k_vif->bssid, vif->bss_conf.bssid, ETH_ALEN);
2963
2964 /* Install rates */
2965 rc = mwl8k_cmd_set_rate(hw, vif);
2966 if (rc)
2967 goto out;
2968
2969 /* Turn on rate adaptation */
2970 rc = mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE,
2971 MWL8K_UCAST_RATE, NULL);
2972 if (rc)
2973 goto out;
2974
2975 /* Set radio preamble */
2976 rc = mwl8k_set_radio_preamble(hw,
2977 vif->bss_conf.use_short_preamble);
2978 if (rc)
2979 goto out;
2980
2981 /* Set slot time */
2982 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
2983 if (rc)
2984 goto out;
2985
2986 /* Update peer rate info */
2987 rc = mwl8k_cmd_update_stadb(hw, vif,
2988 MWL8K_STA_DB_MODIFY_ENTRY);
2989 if (rc)
2990 goto out;
2991
2992 /* Set AID */
2993 rc = mwl8k_cmd_set_aid(hw, vif);
2994 if (rc)
2995 goto out;
2996
2997 /*
2998 * Finalize the join. Tell rx handler to process
2999 * next beacon from our BSSID.
3000 */
3001 memcpy(priv->capture_bssid, mwl8k_vif->bssid, ETH_ALEN);
3002 priv->capture_beacon = true;
3003 } else {
3004 rc = mwl8k_cmd_update_stadb(hw, vif, MWL8K_STA_DB_DEL_ENTRY);
3005 memset(mwl8k_vif->bssid, 0, ETH_ALEN);
3006 }
3007
3008 out:
3009 mwl8k_fw_unlock(hw);
3010 }
3011
3012 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
3013 int mc_count, struct dev_addr_list *mclist)
3014 {
3015 struct mwl8k_cmd_pkt *cmd;
3016
3017 /*
3018 * Synthesize and return a command packet that programs the
3019 * hardware multicast address filter. At this point we don't
3020 * know whether FIF_ALLMULTI is being requested, but if it is,
3021 * we'll end up throwing this packet away and creating a new
3022 * one in mwl8k_configure_filter().
3023 */
3024 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_count, mclist);
3025
3026 return (unsigned long)cmd;
3027 }
3028
3029 static int
3030 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
3031 unsigned int changed_flags,
3032 unsigned int *total_flags)
3033 {
3034 struct mwl8k_priv *priv = hw->priv;
3035
3036 /*
3037 * Hardware sniffer mode is mutually exclusive with STA
3038 * operation, so refuse to enable sniffer mode if a STA
3039 * interface is active.
3040 */
3041 if (priv->vif != NULL) {
3042 if (net_ratelimit())
3043 printk(KERN_INFO "%s: not enabling sniffer "
3044 "mode because STA interface is active\n",
3045 wiphy_name(hw->wiphy));
3046 return 0;
3047 }
3048
3049 if (!priv->sniffer_enabled) {
3050 if (mwl8k_cmd_enable_sniffer(hw, 1))
3051 return 0;
3052 priv->sniffer_enabled = true;
3053 }
3054
3055 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
3056 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
3057 FIF_OTHER_BSS;
3058
3059 return 1;
3060 }
3061
3062 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
3063 unsigned int changed_flags,
3064 unsigned int *total_flags,
3065 u64 multicast)
3066 {
3067 struct mwl8k_priv *priv = hw->priv;
3068 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
3069
3070 /*
3071 * AP firmware doesn't allow fine-grained control over
3072 * the receive filter.
3073 */
3074 if (priv->ap_fw) {
3075 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3076 kfree(cmd);
3077 return;
3078 }
3079
3080 /*
3081 * Enable hardware sniffer mode if FIF_CONTROL or
3082 * FIF_OTHER_BSS is requested.
3083 */
3084 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
3085 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
3086 kfree(cmd);
3087 return;
3088 }
3089
3090 /* Clear unsupported feature flags */
3091 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
3092
3093 if (mwl8k_fw_lock(hw))
3094 return;
3095
3096 if (priv->sniffer_enabled) {
3097 mwl8k_cmd_enable_sniffer(hw, 0);
3098 priv->sniffer_enabled = false;
3099 }
3100
3101 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
3102 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
3103 /*
3104 * Disable the BSS filter.
3105 */
3106 mwl8k_cmd_set_pre_scan(hw);
3107 } else {
3108 u8 *bssid;
3109
3110 /*
3111 * Enable the BSS filter.
3112 *
3113 * If there is an active STA interface, use that
3114 * interface's BSSID, otherwise use a dummy one
3115 * (where the OUI part needs to be nonzero for
3116 * the BSSID to be accepted by POST_SCAN).
3117 */
3118 bssid = "\x01\x00\x00\x00\x00\x00";
3119 if (priv->vif != NULL)
3120 bssid = MWL8K_VIF(priv->vif)->bssid;
3121
3122 mwl8k_cmd_set_post_scan(hw, bssid);
3123 }
3124 }
3125
3126 /*
3127 * If FIF_ALLMULTI is being requested, throw away the command
3128 * packet that ->prepare_multicast() built and replace it with
3129 * a command packet that enables reception of all multicast
3130 * packets.
3131 */
3132 if (*total_flags & FIF_ALLMULTI) {
3133 kfree(cmd);
3134 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, 0, NULL);
3135 }
3136
3137 if (cmd != NULL) {
3138 mwl8k_post_cmd(hw, cmd);
3139 kfree(cmd);
3140 }
3141
3142 mwl8k_fw_unlock(hw);
3143 }
3144
3145 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3146 {
3147 return mwl8k_cmd_set_rts_threshold(hw, MWL8K_CMD_SET, value);
3148 }
3149
3150 static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
3151 const struct ieee80211_tx_queue_params *params)
3152 {
3153 struct mwl8k_priv *priv = hw->priv;
3154 int rc;
3155
3156 rc = mwl8k_fw_lock(hw);
3157 if (!rc) {
3158 if (!priv->wmm_enabled)
3159 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
3160
3161 if (!rc)
3162 rc = mwl8k_cmd_set_edca_params(hw, queue,
3163 params->cw_min,
3164 params->cw_max,
3165 params->aifs,
3166 params->txop);
3167
3168 mwl8k_fw_unlock(hw);
3169 }
3170
3171 return rc;
3172 }
3173
3174 static int mwl8k_get_tx_stats(struct ieee80211_hw *hw,
3175 struct ieee80211_tx_queue_stats *stats)
3176 {
3177 struct mwl8k_priv *priv = hw->priv;
3178 struct mwl8k_tx_queue *txq;
3179 int index;
3180
3181 spin_lock_bh(&priv->tx_lock);
3182 for (index = 0; index < MWL8K_TX_QUEUES; index++) {
3183 txq = priv->txq + index;
3184 memcpy(&stats[index], &txq->stats,
3185 sizeof(struct ieee80211_tx_queue_stats));
3186 }
3187 spin_unlock_bh(&priv->tx_lock);
3188
3189 return 0;
3190 }
3191
3192 static int mwl8k_get_stats(struct ieee80211_hw *hw,
3193 struct ieee80211_low_level_stats *stats)
3194 {
3195 return mwl8k_cmd_get_stat(hw, stats);
3196 }
3197
3198 static const struct ieee80211_ops mwl8k_ops = {
3199 .tx = mwl8k_tx,
3200 .start = mwl8k_start,
3201 .stop = mwl8k_stop,
3202 .add_interface = mwl8k_add_interface,
3203 .remove_interface = mwl8k_remove_interface,
3204 .config = mwl8k_config,
3205 .bss_info_changed = mwl8k_bss_info_changed,
3206 .prepare_multicast = mwl8k_prepare_multicast,
3207 .configure_filter = mwl8k_configure_filter,
3208 .set_rts_threshold = mwl8k_set_rts_threshold,
3209 .conf_tx = mwl8k_conf_tx,
3210 .get_tx_stats = mwl8k_get_tx_stats,
3211 .get_stats = mwl8k_get_stats,
3212 };
3213
3214 static void mwl8k_tx_reclaim_handler(unsigned long data)
3215 {
3216 int i;
3217 struct ieee80211_hw *hw = (struct ieee80211_hw *) data;
3218 struct mwl8k_priv *priv = hw->priv;
3219
3220 spin_lock_bh(&priv->tx_lock);
3221 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3222 mwl8k_txq_reclaim(hw, i, 0);
3223
3224 if (priv->tx_wait != NULL && !priv->pending_tx_pkts) {
3225 complete(priv->tx_wait);
3226 priv->tx_wait = NULL;
3227 }
3228 spin_unlock_bh(&priv->tx_lock);
3229 }
3230
3231 static void mwl8k_finalize_join_worker(struct work_struct *work)
3232 {
3233 struct mwl8k_priv *priv =
3234 container_of(work, struct mwl8k_priv, finalize_join_worker);
3235 struct sk_buff *skb = priv->beacon_skb;
3236
3237 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len,
3238 priv->vif->bss_conf.dtim_period);
3239 dev_kfree_skb(skb);
3240
3241 priv->beacon_skb = NULL;
3242 }
3243
3244 enum {
3245 MWL8687 = 0,
3246 MWL8366,
3247 };
3248
3249 static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = {
3250 [MWL8687] = {
3251 .part_name = "88w8687",
3252 .helper_image = "mwl8k/helper_8687.fw",
3253 .fw_image = "mwl8k/fmimage_8687.fw",
3254 },
3255 [MWL8366] = {
3256 .part_name = "88w8366",
3257 .helper_image = "mwl8k/helper_8366.fw",
3258 .fw_image = "mwl8k/fmimage_8366.fw",
3259 .ap_rxd_ops = &rxd_8366_ap_ops,
3260 },
3261 };
3262
3263 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
3264 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
3265 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
3266 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
3267 { },
3268 };
3269 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
3270
3271 static int __devinit mwl8k_probe(struct pci_dev *pdev,
3272 const struct pci_device_id *id)
3273 {
3274 static int printed_version = 0;
3275 struct ieee80211_hw *hw;
3276 struct mwl8k_priv *priv;
3277 int rc;
3278 int i;
3279
3280 if (!printed_version) {
3281 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
3282 printed_version = 1;
3283 }
3284
3285
3286 rc = pci_enable_device(pdev);
3287 if (rc) {
3288 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
3289 MWL8K_NAME);
3290 return rc;
3291 }
3292
3293 rc = pci_request_regions(pdev, MWL8K_NAME);
3294 if (rc) {
3295 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
3296 MWL8K_NAME);
3297 goto err_disable_device;
3298 }
3299
3300 pci_set_master(pdev);
3301
3302
3303 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
3304 if (hw == NULL) {
3305 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
3306 rc = -ENOMEM;
3307 goto err_free_reg;
3308 }
3309
3310 SET_IEEE80211_DEV(hw, &pdev->dev);
3311 pci_set_drvdata(pdev, hw);
3312
3313 priv = hw->priv;
3314 priv->hw = hw;
3315 priv->pdev = pdev;
3316 priv->device_info = &mwl8k_info_tbl[id->driver_data];
3317
3318
3319 priv->sram = pci_iomap(pdev, 0, 0x10000);
3320 if (priv->sram == NULL) {
3321 printk(KERN_ERR "%s: Cannot map device SRAM\n",
3322 wiphy_name(hw->wiphy));
3323 goto err_iounmap;
3324 }
3325
3326 /*
3327 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
3328 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
3329 */
3330 priv->regs = pci_iomap(pdev, 1, 0x10000);
3331 if (priv->regs == NULL) {
3332 priv->regs = pci_iomap(pdev, 2, 0x10000);
3333 if (priv->regs == NULL) {
3334 printk(KERN_ERR "%s: Cannot map device registers\n",
3335 wiphy_name(hw->wiphy));
3336 goto err_iounmap;
3337 }
3338 }
3339
3340
3341 /* Reset firmware and hardware */
3342 mwl8k_hw_reset(priv);
3343
3344 /* Ask userland hotplug daemon for the device firmware */
3345 rc = mwl8k_request_firmware(priv);
3346 if (rc) {
3347 printk(KERN_ERR "%s: Firmware files not found\n",
3348 wiphy_name(hw->wiphy));
3349 goto err_stop_firmware;
3350 }
3351
3352 /* Load firmware into hardware */
3353 rc = mwl8k_load_firmware(hw);
3354 if (rc) {
3355 printk(KERN_ERR "%s: Cannot start firmware\n",
3356 wiphy_name(hw->wiphy));
3357 goto err_stop_firmware;
3358 }
3359
3360 /* Reclaim memory once firmware is successfully loaded */
3361 mwl8k_release_firmware(priv);
3362
3363
3364 if (priv->ap_fw)
3365 priv->rxd_ops = priv->device_info->ap_rxd_ops;
3366 else
3367 priv->rxd_ops = &rxd_sta_ops;
3368
3369 priv->sniffer_enabled = false;
3370 priv->wmm_enabled = false;
3371 priv->pending_tx_pkts = 0;
3372
3373
3374 memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels));
3375 priv->band.band = IEEE80211_BAND_2GHZ;
3376 priv->band.channels = priv->channels;
3377 priv->band.n_channels = ARRAY_SIZE(mwl8k_channels);
3378 priv->band.bitrates = priv->rates;
3379 priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates);
3380 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3381
3382 BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates));
3383 memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates));
3384
3385 /*
3386 * Extra headroom is the size of the required DMA header
3387 * minus the size of the smallest 802.11 frame (CTS frame).
3388 */
3389 hw->extra_tx_headroom =
3390 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
3391
3392 hw->channel_change_time = 10;
3393
3394 hw->queues = MWL8K_TX_QUEUES;
3395
3396 /* Set rssi and noise values to dBm */
3397 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
3398 hw->vif_data_size = sizeof(struct mwl8k_vif);
3399 priv->vif = NULL;
3400
3401 /* Set default radio state and preamble */
3402 priv->radio_on = 0;
3403 priv->radio_short_preamble = 0;
3404
3405 /* Finalize join worker */
3406 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
3407
3408 /* TX reclaim tasklet */
3409 tasklet_init(&priv->tx_reclaim_task,
3410 mwl8k_tx_reclaim_handler, (unsigned long)hw);
3411 tasklet_disable(&priv->tx_reclaim_task);
3412
3413 /* Power management cookie */
3414 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
3415 if (priv->cookie == NULL)
3416 goto err_stop_firmware;
3417
3418 rc = mwl8k_rxq_init(hw, 0);
3419 if (rc)
3420 goto err_free_cookie;
3421 rxq_refill(hw, 0, INT_MAX);
3422
3423 mutex_init(&priv->fw_mutex);
3424 priv->fw_mutex_owner = NULL;
3425 priv->fw_mutex_depth = 0;
3426 priv->hostcmd_wait = NULL;
3427
3428 spin_lock_init(&priv->tx_lock);
3429
3430 priv->tx_wait = NULL;
3431
3432 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
3433 rc = mwl8k_txq_init(hw, i);
3434 if (rc)
3435 goto err_free_queues;
3436 }
3437
3438 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
3439 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3440 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
3441 iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3442
3443 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
3444 IRQF_SHARED, MWL8K_NAME, hw);
3445 if (rc) {
3446 printk(KERN_ERR "%s: failed to register IRQ handler\n",
3447 wiphy_name(hw->wiphy));
3448 goto err_free_queues;
3449 }
3450
3451 /*
3452 * Temporarily enable interrupts. Initial firmware host
3453 * commands use interrupts and avoids polling. Disable
3454 * interrupts when done.
3455 */
3456 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3457
3458 /* Get config data, mac addrs etc */
3459 if (priv->ap_fw) {
3460 rc = mwl8k_cmd_get_hw_spec_ap(hw);
3461 if (!rc)
3462 rc = mwl8k_cmd_set_hw_spec(hw);
3463 } else {
3464 rc = mwl8k_cmd_get_hw_spec_sta(hw);
3465
3466 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
3467 }
3468 if (rc) {
3469 printk(KERN_ERR "%s: Cannot initialise firmware\n",
3470 wiphy_name(hw->wiphy));
3471 goto err_free_irq;
3472 }
3473
3474 /* Turn radio off */
3475 rc = mwl8k_cmd_radio_disable(hw);
3476 if (rc) {
3477 printk(KERN_ERR "%s: Cannot disable\n", wiphy_name(hw->wiphy));
3478 goto err_free_irq;
3479 }
3480
3481 /* Clear MAC address */
3482 rc = mwl8k_cmd_set_mac_addr(hw, "\x00\x00\x00\x00\x00\x00");
3483 if (rc) {
3484 printk(KERN_ERR "%s: Cannot clear MAC address\n",
3485 wiphy_name(hw->wiphy));
3486 goto err_free_irq;
3487 }
3488
3489 /* Disable interrupts */
3490 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3491 free_irq(priv->pdev->irq, hw);
3492
3493 rc = ieee80211_register_hw(hw);
3494 if (rc) {
3495 printk(KERN_ERR "%s: Cannot register device\n",
3496 wiphy_name(hw->wiphy));
3497 goto err_free_irq;
3498 }
3499
3500 printk(KERN_INFO "%s: %s v%d, %pM, %s firmware %u.%u.%u.%u\n",
3501 wiphy_name(hw->wiphy), priv->device_info->part_name,
3502 priv->hw_rev, hw->wiphy->perm_addr,
3503 priv->ap_fw ? "AP" : "STA",
3504 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
3505 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
3506
3507 return 0;
3508
3509 err_free_irq:
3510 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
3511 free_irq(priv->pdev->irq, hw);
3512
3513 err_free_queues:
3514 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3515 mwl8k_txq_deinit(hw, i);
3516 mwl8k_rxq_deinit(hw, 0);
3517
3518 err_free_cookie:
3519 if (priv->cookie != NULL)
3520 pci_free_consistent(priv->pdev, 4,
3521 priv->cookie, priv->cookie_dma);
3522
3523 err_stop_firmware:
3524 mwl8k_hw_reset(priv);
3525 mwl8k_release_firmware(priv);
3526
3527 err_iounmap:
3528 if (priv->regs != NULL)
3529 pci_iounmap(pdev, priv->regs);
3530
3531 if (priv->sram != NULL)
3532 pci_iounmap(pdev, priv->sram);
3533
3534 pci_set_drvdata(pdev, NULL);
3535 ieee80211_free_hw(hw);
3536
3537 err_free_reg:
3538 pci_release_regions(pdev);
3539
3540 err_disable_device:
3541 pci_disable_device(pdev);
3542
3543 return rc;
3544 }
3545
3546 static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
3547 {
3548 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
3549 }
3550
3551 static void __devexit mwl8k_remove(struct pci_dev *pdev)
3552 {
3553 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
3554 struct mwl8k_priv *priv;
3555 int i;
3556
3557 if (hw == NULL)
3558 return;
3559 priv = hw->priv;
3560
3561 ieee80211_stop_queues(hw);
3562
3563 ieee80211_unregister_hw(hw);
3564
3565 /* Remove tx reclaim tasklet */
3566 tasklet_kill(&priv->tx_reclaim_task);
3567
3568 /* Stop hardware */
3569 mwl8k_hw_reset(priv);
3570
3571 /* Return all skbs to mac80211 */
3572 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3573 mwl8k_txq_reclaim(hw, i, 1);
3574
3575 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3576 mwl8k_txq_deinit(hw, i);
3577
3578 mwl8k_rxq_deinit(hw, 0);
3579
3580 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
3581
3582 pci_iounmap(pdev, priv->regs);
3583 pci_iounmap(pdev, priv->sram);
3584 pci_set_drvdata(pdev, NULL);
3585 ieee80211_free_hw(hw);
3586 pci_release_regions(pdev);
3587 pci_disable_device(pdev);
3588 }
3589
3590 static struct pci_driver mwl8k_driver = {
3591 .name = MWL8K_NAME,
3592 .id_table = mwl8k_pci_id_table,
3593 .probe = mwl8k_probe,
3594 .remove = __devexit_p(mwl8k_remove),
3595 .shutdown = __devexit_p(mwl8k_shutdown),
3596 };
3597
3598 static int __init mwl8k_init(void)
3599 {
3600 return pci_register_driver(&mwl8k_driver);
3601 }
3602
3603 static void __exit mwl8k_exit(void)
3604 {
3605 pci_unregister_driver(&mwl8k_driver);
3606 }
3607
3608 module_init(mwl8k_init);
3609 module_exit(mwl8k_exit);
3610
3611 MODULE_DESCRIPTION(MWL8K_DESC);
3612 MODULE_VERSION(MWL8K_VERSION);
3613 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
3614 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree