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mwl8k: get rid of mwl8k_bss_info_changed() workqueue use
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / mwl8k.c
CommitLineData
a66098da 1/*
ce9e2e1b
LB		 2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
a66098da
LB		 4 *
5 * Copyright (C) 2008 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/spinlock.h>
16#include <linux/list.h>
17#include <linux/pci.h>
18#include <linux/delay.h>
19#include <linux/completion.h>
20#include <linux/etherdevice.h>
21#include <net/mac80211.h>
22#include <linux/moduleparam.h>
23#include <linux/firmware.h>
24#include <linux/workqueue.h>
25
26#define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
27#define MWL8K_NAME KBUILD_MODNAME
28#define MWL8K_VERSION "0.9.1"
29
30MODULE_DESCRIPTION(MWL8K_DESC);
31MODULE_VERSION(MWL8K_VERSION);
32MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
33MODULE_LICENSE("GPL");
34
35static DEFINE_PCI_DEVICE_TABLE(mwl8k_table) = {
36 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = 8687, },
37 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = 8687, },
38 { }
39};
40MODULE_DEVICE_TABLE(pci, mwl8k_table);
41
a66098da
LB		 42/* Register definitions */
43#define MWL8K_HIU_GEN_PTR 0x00000c10
ce9e2e1b
LB		 44#define MWL8K_MODE_STA 0x0000005a
45#define MWL8K_MODE_AP 0x000000a5
a66098da 46#define MWL8K_HIU_INT_CODE 0x00000c14
ce9e2e1b
LB		 47#define MWL8K_FWSTA_READY 0xf0f1f2f4
48#define MWL8K_FWAP_READY 0xf1f2f4a5
49#define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
a66098da
LB		 50#define MWL8K_HIU_SCRATCH 0x00000c40
51
52/* Host->device communications */
53#define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
54#define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
55#define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
56#define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
57#define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
ce9e2e1b
LB		 58#define MWL8K_H2A_INT_DUMMY (1 << 20)
59#define MWL8K_H2A_INT_RESET (1 << 15)
60#define MWL8K_H2A_INT_DOORBELL (1 << 1)
61#define MWL8K_H2A_INT_PPA_READY (1 << 0)
a66098da
LB		 62
63/* Device->host communications */
64#define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
65#define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
66#define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
67#define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
68#define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
ce9e2e1b
LB		 69#define MWL8K_A2H_INT_DUMMY (1 << 20)
70#define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
71#define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
72#define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
73#define MWL8K_A2H_INT_RADIO_ON (1 << 6)
74#define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
75#define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
76#define MWL8K_A2H_INT_OPC_DONE (1 << 2)
77#define MWL8K_A2H_INT_RX_READY (1 << 1)
78#define MWL8K_A2H_INT_TX_DONE (1 << 0)
a66098da
LB		 79
80#define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
81 MWL8K_A2H_INT_CHNL_SWITCHED | \
82 MWL8K_A2H_INT_QUEUE_EMPTY | \
83 MWL8K_A2H_INT_RADAR_DETECT | \
84 MWL8K_A2H_INT_RADIO_ON | \
85 MWL8K_A2H_INT_RADIO_OFF | \
86 MWL8K_A2H_INT_MAC_EVENT | \
87 MWL8K_A2H_INT_OPC_DONE | \
88 MWL8K_A2H_INT_RX_READY | \
89 MWL8K_A2H_INT_TX_DONE)
90
91/* WME stream classes */
92#define WME_AC_BE 0 /* best effort */
93#define WME_AC_BK 1 /* background */
94#define WME_AC_VI 2 /* video */
95#define WME_AC_VO 3 /* voice */
96
97#define MWL8K_RX_QUEUES 1
98#define MWL8K_TX_QUEUES 4
99
100struct mwl8k_rx_queue {
101 int rx_desc_count;
102
103 /* hw receives here */
104 int rx_head;
105
106 /* refill descs here */
107 int rx_tail;
108
109 struct mwl8k_rx_desc *rx_desc_area;
110 dma_addr_t rx_desc_dma;
111 struct sk_buff **rx_skb;
112};
113
a66098da
LB		 114struct mwl8k_tx_queue {
115 /* hw transmits here */
116 int tx_head;
117
118 /* sw appends here */
119 int tx_tail;
120
121 struct ieee80211_tx_queue_stats tx_stats;
122 struct mwl8k_tx_desc *tx_desc_area;
123 dma_addr_t tx_desc_dma;
76266b2a 124 struct sk_buff **tx_skb;
a66098da
LB		 125};
126
127/* Pointers to the firmware data and meta information about it. */
128struct mwl8k_firmware {
129 /* Microcode */
130 struct firmware *ucode;
131
132 /* Boot helper code */
133 struct firmware *helper;
134};
135
136struct mwl8k_priv {
137 void __iomem *regs;
138 struct ieee80211_hw *hw;
139
140 struct pci_dev *pdev;
141 u8 name[16];
a66098da
LB		 142
143 /* firmware files and meta data */
144 struct mwl8k_firmware fw;
145 u32 part_num;
146
618952a7
LB		 147 /* firmware access */
148 struct mutex fw_mutex;
149 struct task_struct *fw_mutex_owner;
150 int fw_mutex_depth;
151 struct completion *tx_wait;
152 struct completion *hostcmd_wait;
153
a66098da
LB		 154 /* lock held over TX and TX reap */
155 spinlock_t tx_lock;
a66098da
LB		 156
157 struct ieee80211_vif *vif;
a66098da
LB		 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;
a66098da
LB		 166 u8 hw_rev;
167 __le32 fw_rev;
a66098da
LB		 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[12];
182
c46563b7 183 bool radio_on;
68ce3884 184 bool radio_short_preamble;
0439b1f5 185 bool wmm_enabled;
a66098da 186
a66098da
LB		 187 /* XXX need to convert this to handle multiple interfaces */
188 bool capture_beacon;
d89173f2 189 u8 capture_bssid[ETH_ALEN];
a66098da
LB		 190 struct sk_buff *beacon_skb;
191
192 /*
193 * This FJ worker has to be global as it is scheduled from the
194 * RX handler. At this point we don't know which interface it
195 * belongs to until the list of bssids waiting to complete join
196 * is checked.
197 */
198 struct work_struct finalize_join_worker;
199
200 /* Tasklet to reclaim TX descriptors and buffers after tx */
201 struct tasklet_struct tx_reclaim_task;
202
203 /* Work thread to serialize configuration requests */
204 struct workqueue_struct *config_wq;
a66098da
LB		 205};
206
207/* Per interface specific private data */
208struct mwl8k_vif {
a66098da
LB		 209 /* backpointer to parent config block */
210 struct mwl8k_priv *priv;
211
212 /* BSS config of AP or IBSS from mac80211*/
213 struct ieee80211_bss_conf bss_info;
214
215 /* BSSID of AP or IBSS */
d89173f2
LB		 216 u8 bssid[ETH_ALEN];
217 u8 mac_addr[ETH_ALEN];
a66098da
LB		 218
219 /*
220 * Subset of supported legacy rates.
221 * Intersection of AP and STA supported rates.
222 */
223 struct ieee80211_rate legacy_rates[12];
224
225 /* number of supported legacy rates */
226 u8 legacy_nrates;
227
a66098da
LB		 228 /* Index into station database.Returned by update_sta_db call */
229 u8 peer_id;
230
231 /* Non AMPDU sequence number assigned by driver */
232 u16 seqno;
a66098da
LB		 233};
234
a94cc97e 235#define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
a66098da
LB		 236
237static const struct ieee80211_channel mwl8k_channels[] = {
238 { .center_freq = 2412, .hw_value = 1, },
239 { .center_freq = 2417, .hw_value = 2, },
240 { .center_freq = 2422, .hw_value = 3, },
241 { .center_freq = 2427, .hw_value = 4, },
242 { .center_freq = 2432, .hw_value = 5, },
243 { .center_freq = 2437, .hw_value = 6, },
244 { .center_freq = 2442, .hw_value = 7, },
245 { .center_freq = 2447, .hw_value = 8, },
246 { .center_freq = 2452, .hw_value = 9, },
247 { .center_freq = 2457, .hw_value = 10, },
248 { .center_freq = 2462, .hw_value = 11, },
249};
250
251static const struct ieee80211_rate mwl8k_rates[] = {
252 { .bitrate = 10, .hw_value = 2, },
253 { .bitrate = 20, .hw_value = 4, },
254 { .bitrate = 55, .hw_value = 11, },
255 { .bitrate = 60, .hw_value = 12, },
256 { .bitrate = 90, .hw_value = 18, },
257 { .bitrate = 110, .hw_value = 22, },
258 { .bitrate = 120, .hw_value = 24, },
259 { .bitrate = 180, .hw_value = 36, },
260 { .bitrate = 240, .hw_value = 48, },
261 { .bitrate = 360, .hw_value = 72, },
262 { .bitrate = 480, .hw_value = 96, },
263 { .bitrate = 540, .hw_value = 108, },
264};
265
a66098da
LB		 266/* Set or get info from Firmware */
267#define MWL8K_CMD_SET 0x0001
268#define MWL8K_CMD_GET 0x0000
269
270/* Firmware command codes */
271#define MWL8K_CMD_CODE_DNLD 0x0001
272#define MWL8K_CMD_GET_HW_SPEC 0x0003
273#define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
274#define MWL8K_CMD_GET_STAT 0x0014
ff45fc60
LB		 275#define MWL8K_CMD_RADIO_CONTROL 0x001c
276#define MWL8K_CMD_RF_TX_POWER 0x001e
a66098da
LB		 277#define MWL8K_CMD_SET_PRE_SCAN 0x0107
278#define MWL8K_CMD_SET_POST_SCAN 0x0108
ff45fc60
LB		 279#define MWL8K_CMD_SET_RF_CHANNEL 0x010a
280#define MWL8K_CMD_SET_AID 0x010d
281#define MWL8K_CMD_SET_RATE 0x0110
282#define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
283#define MWL8K_CMD_RTS_THRESHOLD 0x0113
a66098da 284#define MWL8K_CMD_SET_SLOT 0x0114
ff45fc60
LB		 285#define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
286#define MWL8K_CMD_SET_WMM_MODE 0x0123
a66098da 287#define MWL8K_CMD_MIMO_CONFIG 0x0125
ff45fc60 288#define MWL8K_CMD_USE_FIXED_RATE 0x0126
a66098da 289#define MWL8K_CMD_ENABLE_SNIFFER 0x0150
a66098da 290#define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
ff45fc60 291#define MWL8K_CMD_UPDATE_STADB 0x1123
a66098da
LB		 292
293static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize)
294{
295#define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
296 snprintf(buf, bufsize, "%s", #x);\
297 return buf;\
298 } while (0)
ce9e2e1b 299 switch (cmd & ~0x8000) {
a66098da
LB		 300 MWL8K_CMDNAME(CODE_DNLD);
301 MWL8K_CMDNAME(GET_HW_SPEC);
302 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
303 MWL8K_CMDNAME(GET_STAT);
304 MWL8K_CMDNAME(RADIO_CONTROL);
305 MWL8K_CMDNAME(RF_TX_POWER);
306 MWL8K_CMDNAME(SET_PRE_SCAN);
307 MWL8K_CMDNAME(SET_POST_SCAN);
308 MWL8K_CMDNAME(SET_RF_CHANNEL);
ff45fc60
LB		 309 MWL8K_CMDNAME(SET_AID);
310 MWL8K_CMDNAME(SET_RATE);
311 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
312 MWL8K_CMDNAME(RTS_THRESHOLD);
a66098da 313 MWL8K_CMDNAME(SET_SLOT);
ff45fc60
LB		 314 MWL8K_CMDNAME(SET_EDCA_PARAMS);
315 MWL8K_CMDNAME(SET_WMM_MODE);
a66098da 316 MWL8K_CMDNAME(MIMO_CONFIG);
ff45fc60 317 MWL8K_CMDNAME(USE_FIXED_RATE);
a66098da 318 MWL8K_CMDNAME(ENABLE_SNIFFER);
a66098da 319 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
ff45fc60 320 MWL8K_CMDNAME(UPDATE_STADB);
a66098da
LB		 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 */
330static 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 */
340static void mwl8k_release_fw(struct firmware **fw)
341{
342 if (*fw == NULL)
343 return;
344 release_firmware(*fw);
345 *fw = NULL;
346}
347
348static 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 */
355static 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
366static int mwl8k_request_firmware(struct mwl8k_priv *priv, u32 part_num)
367{
368 u8 filename[64];
369 int rc;
370
371 priv->part_num = part_num;
372
373 snprintf(filename, sizeof(filename),
374 "mwl8k/helper_%u.fw", priv->part_num);
375
376 rc = mwl8k_request_fw(priv, filename, &priv->fw.helper);
377 if (rc) {
378 printk(KERN_ERR
379 "%s Error requesting helper firmware file %s\n",
380 pci_name(priv->pdev), filename);
381 return rc;
382 }
383
384 snprintf(filename, sizeof(filename),
385 "mwl8k/fmimage_%u.fw", priv->part_num);
386
387 rc = mwl8k_request_fw(priv, filename, &priv->fw.ucode);
388 if (rc) {
389 printk(KERN_ERR "%s Error requesting firmware file %s\n",
390 pci_name(priv->pdev), filename);
391 mwl8k_release_fw(&priv->fw.helper);
392 return rc;
393 }
394
395 return 0;
396}
397
398struct mwl8k_cmd_pkt {
399 __le16 code;
400 __le16 length;
401 __le16 seq_num;
402 __le16 result;
403 char payload[0];
404} __attribute__((packed));
405
406/*
407 * Firmware loading.
408 */
409static int
410mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
411{
412 void __iomem *regs = priv->regs;
413 dma_addr_t dma_addr;
a66098da
LB		 414 int loops;
415
416 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
417 if (pci_dma_mapping_error(priv->pdev, dma_addr))
418 return -ENOMEM;
419
420 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
421 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
422 iowrite32(MWL8K_H2A_INT_DOORBELL,
423 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
424 iowrite32(MWL8K_H2A_INT_DUMMY,
425 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
426
a66098da
LB		 427 loops = 1000;
428 do {
429 u32 int_code;
430
431 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
432 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
433 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
a66098da
LB		 434 break;
435 }
436
437 udelay(1);
438 } while (--loops);
439
440 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
441
d4b70570 442 return loops ? 0 : -ETIMEDOUT;
a66098da
LB		 443}
444
445static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
446 const u8 *data, size_t length)
447{
448 struct mwl8k_cmd_pkt *cmd;
449 int done;
450 int rc = 0;
451
452 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
453 if (cmd == NULL)
454 return -ENOMEM;
455
456 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
457 cmd->seq_num = 0;
458 cmd->result = 0;
459
460 done = 0;
461 while (length) {
462 int block_size = length > 256 ? 256 : length;
463
464 memcpy(cmd->payload, data + done, block_size);
465 cmd->length = cpu_to_le16(block_size);
466
467 rc = mwl8k_send_fw_load_cmd(priv, cmd,
468 sizeof(*cmd) + block_size);
469 if (rc)
470 break;
471
472 done += block_size;
473 length -= block_size;
474 }
475
476 if (!rc) {
477 cmd->length = 0;
478 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
479 }
480
481 kfree(cmd);
482
483 return rc;
484}
485
486static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
487 const u8 *data, size_t length)
488{
489 unsigned char *buffer;
490 int may_continue, rc = 0;
491 u32 done, prev_block_size;
492
493 buffer = kmalloc(1024, GFP_KERNEL);
494 if (buffer == NULL)
495 return -ENOMEM;
496
497 done = 0;
498 prev_block_size = 0;
499 may_continue = 1000;
500 while (may_continue > 0) {
501 u32 block_size;
502
503 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
504 if (block_size & 1) {
505 block_size &= ~1;
506 may_continue--;
507 } else {
508 done += prev_block_size;
509 length -= prev_block_size;
510 }
511
512 if (block_size > 1024 || block_size > length) {
513 rc = -EOVERFLOW;
514 break;
515 }
516
517 if (length == 0) {
518 rc = 0;
519 break;
520 }
521
522 if (block_size == 0) {
523 rc = -EPROTO;
524 may_continue--;
525 udelay(1);
526 continue;
527 }
528
529 prev_block_size = block_size;
530 memcpy(buffer, data + done, block_size);
531
532 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
533 if (rc)
534 break;
535 }
536
537 if (!rc && length != 0)
538 rc = -EREMOTEIO;
539
540 kfree(buffer);
541
542 return rc;
543}
544
545static int mwl8k_load_firmware(struct mwl8k_priv *priv)
546{
547 int loops, rc;
548
549 const u8 *ucode = priv->fw.ucode->data;
550 size_t ucode_len = priv->fw.ucode->size;
551 const u8 *helper = priv->fw.helper->data;
552 size_t helper_len = priv->fw.helper->size;
553
554 if (!memcmp(ucode, "\x01\x00\x00\x00", 4)) {
555 rc = mwl8k_load_fw_image(priv, helper, helper_len);
556 if (rc) {
557 printk(KERN_ERR "%s: unable to load firmware "
558 "helper image\n", pci_name(priv->pdev));
559 return rc;
560 }
561 msleep(1);
562
563 rc = mwl8k_feed_fw_image(priv, ucode, ucode_len);
564 } else {
565 rc = mwl8k_load_fw_image(priv, ucode, ucode_len);
566 }
567
568 if (rc) {
569 printk(KERN_ERR "%s: unable to load firmware data\n",
570 pci_name(priv->pdev));
571 return rc;
572 }
573
574 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
575 msleep(1);
576
577 loops = 200000;
578 do {
579 if (ioread32(priv->regs + MWL8K_HIU_INT_CODE)
580 == MWL8K_FWSTA_READY)
581 break;
582 udelay(1);
583 } while (--loops);
584
585 return loops ? 0 : -ETIMEDOUT;
586}
587
588
589/*
590 * Defines shared between transmission and reception.
591 */
592/* HT control fields for firmware */
593struct ewc_ht_info {
594 __le16 control1;
595 __le16 control2;
596 __le16 control3;
597} __attribute__((packed));
598
599/* Firmware Station database operations */
600#define MWL8K_STA_DB_ADD_ENTRY 0
601#define MWL8K_STA_DB_MODIFY_ENTRY 1
602#define MWL8K_STA_DB_DEL_ENTRY 2
603#define MWL8K_STA_DB_FLUSH 3
604
605/* Peer Entry flags - used to define the type of the peer node */
606#define MWL8K_PEER_TYPE_ACCESSPOINT 2
a66098da
LB		 607
608#define MWL8K_IEEE_LEGACY_DATA_RATES 12
609#define MWL8K_MCS_BITMAP_SIZE 16
a66098da
LB		 610
611struct peer_capability_info {
612 /* Peer type - AP vs. STA. */
613 __u8 peer_type;
614
615 /* Basic 802.11 capabilities from assoc resp. */
616 __le16 basic_caps;
617
618 /* Set if peer supports 802.11n high throughput (HT). */
619 __u8 ht_support;
620
621 /* Valid if HT is supported. */
622 __le16 ht_caps;
623 __u8 extended_ht_caps;
624 struct ewc_ht_info ewc_info;
625
626 /* Legacy rate table. Intersection of our rates and peer rates. */
627 __u8 legacy_rates[MWL8K_IEEE_LEGACY_DATA_RATES];
628
629 /* HT rate table. Intersection of our rates and peer rates. */
630 __u8 ht_rates[MWL8K_MCS_BITMAP_SIZE];
c23b5a69 631 __u8 pad[16];
a66098da
LB		 632
633 /* If set, interoperability mode, no proprietary extensions. */
634 __u8 interop;
635 __u8 pad2;
636 __u8 station_id;
637 __le16 amsdu_enabled;
638} __attribute__((packed));
639
640/* Inline functions to manipulate QoS field in data descriptor. */
a66098da
LB		 641static inline u16 mwl8k_qos_setbit_eosp(u16 qos)
642{
643 u16 val_mask = 1 << 4;
644
645 /* End of Service Period Bit 4 */
646 return qos | val_mask;
647}
648
649static inline u16 mwl8k_qos_setbit_ack(u16 qos, u8 ack_policy)
650{
651 u16 val_mask = 0x3;
652 u8 shift = 5;
653 u16 qos_mask = ~(val_mask << shift);
654
655 /* Ack Policy Bit 5-6 */
656 return (qos & qos_mask) | ((ack_policy & val_mask) << shift);
657}
658
659static inline u16 mwl8k_qos_setbit_amsdu(u16 qos)
660{
661 u16 val_mask = 1 << 7;
662
663 /* AMSDU present Bit 7 */
664 return qos | val_mask;
665}
666
667static inline u16 mwl8k_qos_setbit_qlen(u16 qos, u8 len)
668{
669 u16 val_mask = 0xff;
670 u8 shift = 8;
671 u16 qos_mask = ~(val_mask << shift);
672
673 /* Queue Length Bits 8-15 */
674 return (qos & qos_mask) | ((len & val_mask) << shift);
675}
676
677/* DMA header used by firmware and hardware. */
678struct mwl8k_dma_data {
679 __le16 fwlen;
680 struct ieee80211_hdr wh;
681} __attribute__((packed));
682
683/* Routines to add/remove DMA header from skb. */
76266b2a 684static inline void mwl8k_remove_dma_header(struct sk_buff *skb)
a66098da 685{
76266b2a 686 struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)skb->data;
a66098da 687 void *dst, *src = &tr->wh;
76266b2a 688 int hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
a66098da
LB		 689 u16 space = sizeof(struct mwl8k_dma_data) - hdrlen;
690
691 dst = (void *)tr + space;
692 if (dst != src) {
693 memmove(dst, src, hdrlen);
694 skb_pull(skb, space);
695 }
a66098da
LB		 696}
697
76266b2a 698static inline void mwl8k_add_dma_header(struct sk_buff *skb)
a66098da
LB		 699{
700 struct ieee80211_hdr *wh;
701 u32 hdrlen, pktlen;
702 struct mwl8k_dma_data *tr;
703
704 wh = (struct ieee80211_hdr *)skb->data;
705 hdrlen = ieee80211_hdrlen(wh->frame_control);
706 pktlen = skb->len;
707
708 /*
709 * Copy up/down the 802.11 header; the firmware requires
710 * we present a 2-byte payload length followed by a
711 * 4-address header (w/o QoS), followed (optionally) by
712 * any WEP/ExtIV header (but only filled in for CCMP).
713 */
714 if (hdrlen != sizeof(struct mwl8k_dma_data))
715 skb_push(skb, sizeof(struct mwl8k_dma_data) - hdrlen);
716
717 tr = (struct mwl8k_dma_data *)skb->data;
718 if (wh != &tr->wh)
719 memmove(&tr->wh, wh, hdrlen);
720
721 /* Clear addr4 */
d89173f2 722 memset(tr->wh.addr4, 0, ETH_ALEN);
a66098da
LB		 723
724 /*
725 * Firmware length is the length of the fully formed "802.11
726 * payload". That is, everything except for the 802.11 header.
727 * This includes all crypto material including the MIC.
728 */
729 tr->fwlen = cpu_to_le16(pktlen - hdrlen);
a66098da
LB		 730}
731
732
733/*
734 * Packet reception.
735 */
a66098da 736#define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02
a66098da
LB		 737
738struct mwl8k_rx_desc {
739 __le16 pkt_len;
740 __u8 link_quality;
741 __u8 noise_level;
742 __le32 pkt_phys_addr;
743 __le32 next_rx_desc_phys_addr;
744 __le16 qos_control;
745 __le16 rate_info;
746 __le32 pad0[4];
747 __u8 rssi;
748 __u8 channel;
749 __le16 pad1;
750 __u8 rx_ctrl;
751 __u8 rx_status;
752 __u8 pad2[2];
753} __attribute__((packed));
754
755#define MWL8K_RX_DESCS 256
756#define MWL8K_RX_MAXSZ 3800
757
758static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
759{
760 struct mwl8k_priv *priv = hw->priv;
761 struct mwl8k_rx_queue *rxq = priv->rxq + index;
762 int size;
763 int i;
764
765 rxq->rx_desc_count = 0;
766 rxq->rx_head = 0;
767 rxq->rx_tail = 0;
768
769 size = MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc);
770
771 rxq->rx_desc_area =
772 pci_alloc_consistent(priv->pdev, size, &rxq->rx_desc_dma);
773 if (rxq->rx_desc_area == NULL) {
774 printk(KERN_ERR "%s: failed to alloc RX descriptors\n",
775 priv->name);
776 return -ENOMEM;
777 }
778 memset(rxq->rx_desc_area, 0, size);
779
780 rxq->rx_skb = kmalloc(MWL8K_RX_DESCS *
781 sizeof(*rxq->rx_skb), GFP_KERNEL);
782 if (rxq->rx_skb == NULL) {
783 printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
784 priv->name);
785 pci_free_consistent(priv->pdev, size,
786 rxq->rx_desc_area, rxq->rx_desc_dma);
787 return -ENOMEM;
788 }
789 memset(rxq->rx_skb, 0, MWL8K_RX_DESCS * sizeof(*rxq->rx_skb));
790
791 for (i = 0; i < MWL8K_RX_DESCS; i++) {
792 struct mwl8k_rx_desc *rx_desc;
793 int nexti;
794
795 rx_desc = rxq->rx_desc_area + i;
796 nexti = (i + 1) % MWL8K_RX_DESCS;
797
798 rx_desc->next_rx_desc_phys_addr =
799 cpu_to_le32(rxq->rx_desc_dma
800 + nexti * sizeof(*rx_desc));
c491bf12 801 rx_desc->rx_ctrl = MWL8K_RX_CTRL_OWNED_BY_HOST;
a66098da
LB		 802 }
803
804 return 0;
805}
806
807static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
808{
809 struct mwl8k_priv *priv = hw->priv;
810 struct mwl8k_rx_queue *rxq = priv->rxq + index;
811 int refilled;
812
813 refilled = 0;
814 while (rxq->rx_desc_count < MWL8K_RX_DESCS && limit--) {
815 struct sk_buff *skb;
816 int rx;
817
818 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
819 if (skb == NULL)
820 break;
821
822 rxq->rx_desc_count++;
823
824 rx = rxq->rx_tail;
825 rxq->rx_tail = (rx + 1) % MWL8K_RX_DESCS;
826
827 rxq->rx_desc_area[rx].pkt_phys_addr =
828 cpu_to_le32(pci_map_single(priv->pdev, skb->data,
829 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE));
830
831 rxq->rx_desc_area[rx].pkt_len = cpu_to_le16(MWL8K_RX_MAXSZ);
832 rxq->rx_skb[rx] = skb;
833 wmb();
834 rxq->rx_desc_area[rx].rx_ctrl = 0;
835
836 refilled++;
837 }
838
839 return refilled;
840}
841
842/* Must be called only when the card's reception is completely halted */
843static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
844{
845 struct mwl8k_priv *priv = hw->priv;
846 struct mwl8k_rx_queue *rxq = priv->rxq + index;
847 int i;
848
849 for (i = 0; i < MWL8K_RX_DESCS; i++) {
850 if (rxq->rx_skb[i] != NULL) {
851 unsigned long addr;
852
853 addr = le32_to_cpu(rxq->rx_desc_area[i].pkt_phys_addr);
854 pci_unmap_single(priv->pdev, addr, MWL8K_RX_MAXSZ,
855 PCI_DMA_FROMDEVICE);
856 kfree_skb(rxq->rx_skb[i]);
857 rxq->rx_skb[i] = NULL;
858 }
859 }
860
861 kfree(rxq->rx_skb);
862 rxq->rx_skb = NULL;
863
864 pci_free_consistent(priv->pdev,
865 MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc),
866 rxq->rx_desc_area, rxq->rx_desc_dma);
867 rxq->rx_desc_area = NULL;
868}
869
870
871/*
872 * Scan a list of BSSIDs to process for finalize join.
873 * Allows for extension to process multiple BSSIDs.
874 */
875static inline int
876mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
877{
878 return priv->capture_beacon &&
879 ieee80211_is_beacon(wh->frame_control) &&
880 !compare_ether_addr(wh->addr3, priv->capture_bssid);
881}
882
883static inline void mwl8k_save_beacon(struct mwl8k_priv *priv,
884 struct sk_buff *skb)
885{
886 priv->capture_beacon = false;
d89173f2 887 memset(priv->capture_bssid, 0, ETH_ALEN);
a66098da
LB		 888
889 /*
890 * Use GFP_ATOMIC as rxq_process is called from
891 * the primary interrupt handler, memory allocation call
892 * must not sleep.
893 */
894 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
895 if (priv->beacon_skb != NULL)
896 queue_work(priv->config_wq,
897 &priv->finalize_join_worker);
898}
899
900static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
901{
902 struct mwl8k_priv *priv = hw->priv;
903 struct mwl8k_rx_queue *rxq = priv->rxq + index;
904 int processed;
905
906 processed = 0;
907 while (rxq->rx_desc_count && limit--) {
908 struct mwl8k_rx_desc *rx_desc;
909 struct sk_buff *skb;
910 struct ieee80211_rx_status status;
911 unsigned long addr;
912 struct ieee80211_hdr *wh;
913
914 rx_desc = rxq->rx_desc_area + rxq->rx_head;
915 if (!(rx_desc->rx_ctrl & MWL8K_RX_CTRL_OWNED_BY_HOST))
916 break;
917 rmb();
918
919 skb = rxq->rx_skb[rxq->rx_head];
d25f9f13
LB		 920 if (skb == NULL)
921 break;
a66098da
LB		 922 rxq->rx_skb[rxq->rx_head] = NULL;
923
924 rxq->rx_head = (rxq->rx_head + 1) % MWL8K_RX_DESCS;
925 rxq->rx_desc_count--;
926
927 addr = le32_to_cpu(rx_desc->pkt_phys_addr);
928 pci_unmap_single(priv->pdev, addr,
929 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
930
931 skb_put(skb, le16_to_cpu(rx_desc->pkt_len));
76266b2a 932 mwl8k_remove_dma_header(skb);
a66098da
LB		 933
934 wh = (struct ieee80211_hdr *)skb->data;
935
936 /*
937 * Check for pending join operation. save a copy of
938 * the beacon and schedule a tasklet to send finalize
939 * join command to the firmware.
940 */
941 if (mwl8k_capture_bssid(priv, wh))
942 mwl8k_save_beacon(priv, skb);
943
944 memset(&status, 0, sizeof(status));
945 status.mactime = 0;
946 status.signal = -rx_desc->rssi;
947 status.noise = -rx_desc->noise_level;
948 status.qual = rx_desc->link_quality;
949 status.antenna = 1;
950 status.rate_idx = 1;
951 status.flag = 0;
952 status.band = IEEE80211_BAND_2GHZ;
953 status.freq = ieee80211_channel_to_frequency(rx_desc->channel);
f1d58c25
JB		 954 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
955 ieee80211_rx_irqsafe(hw, skb);
a66098da
LB		 956
957 processed++;
958 }
959
960 return processed;
961}
962
963
964/*
965 * Packet transmission.
966 */
967
968/* Transmit queue assignment. */
969enum {
970 MWL8K_WME_AC_BK = 0, /* background access */
971 MWL8K_WME_AC_BE = 1, /* best effort access */
972 MWL8K_WME_AC_VI = 2, /* video access */
973 MWL8K_WME_AC_VO = 3, /* voice access */
974};
975
976/* Transmit packet ACK policy */
977#define MWL8K_TXD_ACK_POLICY_NORMAL 0
a66098da
LB		 978#define MWL8K_TXD_ACK_POLICY_BLOCKACK 3
979
980#define GET_TXQ(_ac) (\
981 ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \
982 ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \
983 ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \
984 MWL8K_WME_AC_BE)
985
a66098da
LB		 986#define MWL8K_TXD_STATUS_OK 0x00000001
987#define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
988#define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
989#define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
a66098da 990#define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
a66098da
LB		 991
992struct mwl8k_tx_desc {
993 __le32 status;
994 __u8 data_rate;
995 __u8 tx_priority;
996 __le16 qos_control;
997 __le32 pkt_phys_addr;
998 __le16 pkt_len;
d89173f2 999 __u8 dest_MAC_addr[ETH_ALEN];
a66098da
LB		 1000 __le32 next_tx_desc_phys_addr;
1001 __le32 reserved;
1002 __le16 rate_info;
1003 __u8 peer_id;
1004 __u8 tx_frag_cnt;
1005} __attribute__((packed));
1006
1007#define MWL8K_TX_DESCS 128
1008
1009static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1010{
1011 struct mwl8k_priv *priv = hw->priv;
1012 struct mwl8k_tx_queue *txq = priv->txq + index;
1013 int size;
1014 int i;
1015
ce9e2e1b 1016 memset(&txq->tx_stats, 0, sizeof(struct ieee80211_tx_queue_stats));
a66098da
LB		 1017 txq->tx_stats.limit = MWL8K_TX_DESCS;
1018 txq->tx_head = 0;
1019 txq->tx_tail = 0;
1020
1021 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1022
1023 txq->tx_desc_area =
1024 pci_alloc_consistent(priv->pdev, size, &txq->tx_desc_dma);
1025 if (txq->tx_desc_area == NULL) {
1026 printk(KERN_ERR "%s: failed to alloc TX descriptors\n",
1027 priv->name);
1028 return -ENOMEM;
1029 }
1030 memset(txq->tx_desc_area, 0, size);
1031
1032 txq->tx_skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->tx_skb),
1033 GFP_KERNEL);
1034 if (txq->tx_skb == NULL) {
1035 printk(KERN_ERR "%s: failed to alloc TX skbuff list\n",
1036 priv->name);
1037 pci_free_consistent(priv->pdev, size,
1038 txq->tx_desc_area, txq->tx_desc_dma);
1039 return -ENOMEM;
1040 }
1041 memset(txq->tx_skb, 0, MWL8K_TX_DESCS * sizeof(*txq->tx_skb));
1042
1043 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1044 struct mwl8k_tx_desc *tx_desc;
1045 int nexti;
1046
1047 tx_desc = txq->tx_desc_area + i;
1048 nexti = (i + 1) % MWL8K_TX_DESCS;
1049
1050 tx_desc->status = 0;
1051 tx_desc->next_tx_desc_phys_addr =
1052 cpu_to_le32(txq->tx_desc_dma +
1053 nexti * sizeof(*tx_desc));
1054 }
1055
1056 return 0;
1057}
1058
1059static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1060{
1061 iowrite32(MWL8K_H2A_INT_PPA_READY,
1062 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1063 iowrite32(MWL8K_H2A_INT_DUMMY,
1064 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1065 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1066}
1067
1068static inline int mwl8k_txq_busy(struct mwl8k_priv *priv)
1069{
1070 return priv->pending_tx_pkts;
1071}
1072
1073struct mwl8k_txq_info {
1074 u32 fw_owned;
1075 u32 drv_owned;
1076 u32 unused;
1077 u32 len;
1078 u32 head;
1079 u32 tail;
1080};
1081
1082static int mwl8k_scan_tx_ring(struct mwl8k_priv *priv,
c3f967d3 1083 struct mwl8k_txq_info *txinfo)
a66098da
LB		 1084{
1085 int count, desc, status;
1086 struct mwl8k_tx_queue *txq;
1087 struct mwl8k_tx_desc *tx_desc;
1088 int ndescs = 0;
1089
c3f967d3
LB		 1090 memset(txinfo, 0, MWL8K_TX_QUEUES * sizeof(struct mwl8k_txq_info));
1091
a66098da 1092 spin_lock_bh(&priv->tx_lock);
c3f967d3 1093 for (count = 0; count < MWL8K_TX_QUEUES; count++) {
a66098da
LB		 1094 txq = priv->txq + count;
1095 txinfo[count].len = txq->tx_stats.len;
1096 txinfo[count].head = txq->tx_head;
1097 txinfo[count].tail = txq->tx_tail;
1098 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1099 tx_desc = txq->tx_desc_area + desc;
1100 status = le32_to_cpu(tx_desc->status);
1101
1102 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1103 txinfo[count].fw_owned++;
1104 else
1105 txinfo[count].drv_owned++;
1106
1107 if (tx_desc->pkt_len == 0)
1108 txinfo[count].unused++;
1109 }
1110 }
1111 spin_unlock_bh(&priv->tx_lock);
1112
1113 return ndescs;
1114}
1115
618952a7
LB		 1116/*
1117 * Must be called with hw->fw_mutex held and tx queues stopped.
1118 */
950d5b01 1119static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
a66098da 1120{
a66098da
LB		 1121 struct mwl8k_priv *priv = hw->priv;
1122 DECLARE_COMPLETION_ONSTACK(cmd_wait);
ce9e2e1b
LB		 1123 u32 count;
1124 unsigned long timeout;
a66098da
LB		 1125
1126 might_sleep();
1127
a66098da
LB		 1128 spin_lock_bh(&priv->tx_lock);
1129 count = mwl8k_txq_busy(priv);
1130 if (count) {
1131 priv->tx_wait = &cmd_wait;
c46563b7 1132 if (priv->radio_on)
a66098da
LB		 1133 mwl8k_tx_start(priv);
1134 }
1135 spin_unlock_bh(&priv->tx_lock);
1136
1137 if (count) {
c3f967d3 1138 struct mwl8k_txq_info txinfo[MWL8K_TX_QUEUES];
a66098da
LB		 1139 int index;
1140 int newcount;
1141
1142 timeout = wait_for_completion_timeout(&cmd_wait,
618952a7 1143 msecs_to_jiffies(5000));
a66098da
LB		 1144 if (timeout)
1145 return 0;
1146
1147 spin_lock_bh(&priv->tx_lock);
1148 priv->tx_wait = NULL;
1149 newcount = mwl8k_txq_busy(priv);
1150 spin_unlock_bh(&priv->tx_lock);
1151
618952a7 1152 printk(KERN_ERR "%s(%u) TIMEDOUT:5000ms Pend:%u-->%u\n",
950d5b01 1153 __func__, __LINE__, count, newcount);
a66098da 1154
c3f967d3
LB		 1155 mwl8k_scan_tx_ring(priv, txinfo);
1156 for (index = 0; index < MWL8K_TX_QUEUES; index++)
a66098da
LB		 1157 printk(KERN_ERR
1158 "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n",
1159 index,
1160 txinfo[index].len,
1161 txinfo[index].head,
1162 txinfo[index].tail,
1163 txinfo[index].fw_owned,
1164 txinfo[index].drv_owned,
1165 txinfo[index].unused);
ce9e2e1b 1166
a66098da
LB		 1167 return -ETIMEDOUT;
1168 }
1169
1170 return 0;
1171}
1172
c23b5a69
LB		 1173#define MWL8K_TXD_SUCCESS(status) \
1174 ((status) & (MWL8K_TXD_STATUS_OK | \
1175 MWL8K_TXD_STATUS_OK_RETRY | \
1176 MWL8K_TXD_STATUS_OK_MORE_RETRY))
a66098da
LB		 1177
1178static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force)
1179{
1180 struct mwl8k_priv *priv = hw->priv;
1181 struct mwl8k_tx_queue *txq = priv->txq + index;
1182 int wake = 0;
1183
1184 while (txq->tx_stats.len > 0) {
1185 int tx;
a66098da
LB		 1186 struct mwl8k_tx_desc *tx_desc;
1187 unsigned long addr;
ce9e2e1b 1188 int size;
a66098da
LB		 1189 struct sk_buff *skb;
1190 struct ieee80211_tx_info *info;
1191 u32 status;
1192
a66098da
LB		 1193 tx = txq->tx_head;
1194 tx_desc = txq->tx_desc_area + tx;
1195
1196 status = le32_to_cpu(tx_desc->status);
1197
1198 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1199 if (!force)
1200 break;
1201 tx_desc->status &=
1202 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1203 }
1204
1205 txq->tx_head = (tx + 1) % MWL8K_TX_DESCS;
1206 BUG_ON(txq->tx_stats.len == 0);
1207 txq->tx_stats.len--;
1208 priv->pending_tx_pkts--;
1209
1210 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
ce9e2e1b 1211 size = le16_to_cpu(tx_desc->pkt_len);
76266b2a
LB		 1212 skb = txq->tx_skb[tx];
1213 txq->tx_skb[tx] = NULL;
a66098da
LB		 1214
1215 BUG_ON(skb == NULL);
1216 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1217
76266b2a 1218 mwl8k_remove_dma_header(skb);
a66098da
LB		 1219
1220 /* Mark descriptor as unused */
1221 tx_desc->pkt_phys_addr = 0;
1222 tx_desc->pkt_len = 0;
1223
a66098da
LB		 1224 info = IEEE80211_SKB_CB(skb);
1225 ieee80211_tx_info_clear_status(info);
ce9e2e1b 1226 if (MWL8K_TXD_SUCCESS(status))
a66098da 1227 info->flags |= IEEE80211_TX_STAT_ACK;
a66098da
LB		 1228
1229 ieee80211_tx_status_irqsafe(hw, skb);
1230
618952a7 1231 wake = 1;
a66098da
LB		 1232 }
1233
618952a7 1234 if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex))
a66098da
LB		 1235 ieee80211_wake_queue(hw, index);
1236}
1237
1238/* must be called only when the card's transmit is completely halted */
1239static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1240{
1241 struct mwl8k_priv *priv = hw->priv;
1242 struct mwl8k_tx_queue *txq = priv->txq + index;
1243
1244 mwl8k_txq_reclaim(hw, index, 1);
1245
1246 kfree(txq->tx_skb);
1247 txq->tx_skb = NULL;
1248
1249 pci_free_consistent(priv->pdev,
1250 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1251 txq->tx_desc_area, txq->tx_desc_dma);
1252 txq->tx_desc_area = NULL;
1253}
1254
1255static int
1256mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
1257{
1258 struct mwl8k_priv *priv = hw->priv;
1259 struct ieee80211_tx_info *tx_info;
23b33906 1260 struct mwl8k_vif *mwl8k_vif;
a66098da
LB		 1261 struct ieee80211_hdr *wh;
1262 struct mwl8k_tx_queue *txq;
1263 struct mwl8k_tx_desc *tx;
a66098da 1264 dma_addr_t dma;
23b33906
LB		 1265 u32 txstatus;
1266 u8 txdatarate;
1267 u16 qos;
a66098da 1268
23b33906
LB		 1269 wh = (struct ieee80211_hdr *)skb->data;
1270 if (ieee80211_is_data_qos(wh->frame_control))
1271 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1272 else
1273 qos = 0;
a66098da 1274
76266b2a 1275 mwl8k_add_dma_header(skb);
23b33906 1276 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
a66098da
LB		 1277
1278 tx_info = IEEE80211_SKB_CB(skb);
1279 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
a66098da
LB		 1280
1281 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1282 u16 seqno = mwl8k_vif->seqno;
23b33906 1283
a66098da
LB		 1284 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1285 wh->seq_ctrl |= cpu_to_le16(seqno << 4);
1286 mwl8k_vif->seqno = seqno++ % 4096;
1287 }
1288
23b33906
LB		 1289 /* Setup firmware control bit fields for each frame type. */
1290 txstatus = 0;
1291 txdatarate = 0;
1292 if (ieee80211_is_mgmt(wh->frame_control) ||
1293 ieee80211_is_ctl(wh->frame_control)) {
1294 txdatarate = 0;
1295 qos = mwl8k_qos_setbit_eosp(qos);
1296 /* Set Queue size to unspecified */
1297 qos = mwl8k_qos_setbit_qlen(qos, 0xff);
1298 } else if (ieee80211_is_data(wh->frame_control)) {
1299 txdatarate = 1;
1300 if (is_multicast_ether_addr(wh->addr1))
1301 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1302
1303 /* Send pkt in an aggregate if AMPDU frame. */
1304 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1305 qos = mwl8k_qos_setbit_ack(qos,
1306 MWL8K_TXD_ACK_POLICY_BLOCKACK);
1307 else
1308 qos = mwl8k_qos_setbit_ack(qos,
1309 MWL8K_TXD_ACK_POLICY_NORMAL);
1310
1311 if (qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
1312 qos = mwl8k_qos_setbit_amsdu(qos);
1313 }
a66098da
LB		 1314
1315 dma = pci_map_single(priv->pdev, skb->data,
1316 skb->len, PCI_DMA_TODEVICE);
1317
1318 if (pci_dma_mapping_error(priv->pdev, dma)) {
1319 printk(KERN_DEBUG "%s: failed to dma map skb, "
1320 "dropping TX frame.\n", priv->name);
23b33906 1321 dev_kfree_skb(skb);
a66098da
LB		 1322 return NETDEV_TX_OK;
1323 }
1324
23b33906 1325 spin_lock_bh(&priv->tx_lock);
a66098da 1326
23b33906 1327 txq = priv->txq + index;
a66098da 1328
23b33906
LB		 1329 BUG_ON(txq->tx_skb[txq->tx_tail] != NULL);
1330 txq->tx_skb[txq->tx_tail] = skb;
a66098da 1331
23b33906
LB		 1332 tx = txq->tx_desc_area + txq->tx_tail;
1333 tx->data_rate = txdatarate;
1334 tx->tx_priority = index;
a66098da 1335 tx->qos_control = cpu_to_le16(qos);
a66098da
LB		 1336 tx->pkt_phys_addr = cpu_to_le32(dma);
1337 tx->pkt_len = cpu_to_le16(skb->len);
23b33906
LB		 1338 tx->rate_info = 0;
1339 tx->peer_id = mwl8k_vif->peer_id;
a66098da 1340 wmb();
23b33906
LB		 1341 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
1342
1343 txq->tx_stats.count++;
a66098da
LB		 1344 txq->tx_stats.len++;
1345 priv->pending_tx_pkts++;
a66098da 1346
23b33906 1347 txq->tx_tail++;
a66098da
LB		 1348 if (txq->tx_tail == MWL8K_TX_DESCS)
1349 txq->tx_tail = 0;
23b33906 1350
a66098da
LB		 1351 if (txq->tx_head == txq->tx_tail)
1352 ieee80211_stop_queue(hw, index);
1353
23b33906 1354 mwl8k_tx_start(priv);
a66098da
LB		 1355
1356 spin_unlock_bh(&priv->tx_lock);
1357
1358 return NETDEV_TX_OK;
1359}
1360
1361
618952a7
LB		 1362/*
1363 * Firmware access.
1364 *
1365 * We have the following requirements for issuing firmware commands:
1366 * - Some commands require that the packet transmit path is idle when
1367 * the command is issued. (For simplicity, we'll just quiesce the
1368 * transmit path for every command.)
1369 * - There are certain sequences of commands that need to be issued to
1370 * the hardware sequentially, with no other intervening commands.
1371 *
1372 * This leads to an implementation of a "firmware lock" as a mutex that
1373 * can be taken recursively, and which is taken by both the low-level
1374 * command submission function (mwl8k_post_cmd) as well as any users of
1375 * that function that require issuing of an atomic sequence of commands,
1376 * and quiesces the transmit path whenever it's taken.
1377 */
1378static int mwl8k_fw_lock(struct ieee80211_hw *hw)
1379{
1380 struct mwl8k_priv *priv = hw->priv;
1381
1382 if (priv->fw_mutex_owner != current) {
1383 int rc;
1384
1385 mutex_lock(&priv->fw_mutex);
1386 ieee80211_stop_queues(hw);
1387
1388 rc = mwl8k_tx_wait_empty(hw);
1389 if (rc) {
1390 ieee80211_wake_queues(hw);
1391 mutex_unlock(&priv->fw_mutex);
1392
1393 return rc;
1394 }
1395
1396 priv->fw_mutex_owner = current;
1397 }
1398
1399 priv->fw_mutex_depth++;
1400
1401 return 0;
1402}
1403
1404static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
1405{
1406 struct mwl8k_priv *priv = hw->priv;
1407
1408 if (!--priv->fw_mutex_depth) {
1409 ieee80211_wake_queues(hw);
1410 priv->fw_mutex_owner = NULL;
1411 mutex_unlock(&priv->fw_mutex);
1412 }
1413}
1414
1415
a66098da
LB		 1416/*
1417 * Command processing.
1418 */
1419
1420/* Timeout firmware commands after 2000ms */
1421#define MWL8K_CMD_TIMEOUT_MS 2000
1422
1423static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
1424{
1425 DECLARE_COMPLETION_ONSTACK(cmd_wait);
1426 struct mwl8k_priv *priv = hw->priv;
1427 void __iomem *regs = priv->regs;
1428 dma_addr_t dma_addr;
1429 unsigned int dma_size;
1430 int rc;
a66098da
LB		 1431 unsigned long timeout = 0;
1432 u8 buf[32];
1433
1434 cmd->result = 0xFFFF;
1435 dma_size = le16_to_cpu(cmd->length);
1436 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
1437 PCI_DMA_BIDIRECTIONAL);
1438 if (pci_dma_mapping_error(priv->pdev, dma_addr))
1439 return -ENOMEM;
1440
618952a7
LB		 1441 rc = mwl8k_fw_lock(hw);
1442 if (rc)
1443 return rc;
a66098da 1444
a66098da
LB		 1445 priv->hostcmd_wait = &cmd_wait;
1446 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
1447 iowrite32(MWL8K_H2A_INT_DOORBELL,
1448 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1449 iowrite32(MWL8K_H2A_INT_DUMMY,
1450 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
a66098da
LB		 1451
1452 timeout = wait_for_completion_timeout(&cmd_wait,
1453 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
1454
618952a7
LB		 1455 priv->hostcmd_wait = NULL;
1456
1457 mwl8k_fw_unlock(hw);
1458
37055bd4
LB		 1459 pci_unmap_single(priv->pdev, dma_addr, dma_size,
1460 PCI_DMA_BIDIRECTIONAL);
1461
a66098da 1462 if (!timeout) {
a66098da
LB		 1463 printk(KERN_ERR "%s: Command %s timeout after %u ms\n",
1464 priv->name,
1465 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
1466 MWL8K_CMD_TIMEOUT_MS);
1467 rc = -ETIMEDOUT;
1468 } else {
ce9e2e1b 1469 rc = cmd->result ? -EINVAL : 0;
a66098da
LB		 1470 if (rc)
1471 printk(KERN_ERR "%s: Command %s error 0x%x\n",
1472 priv->name,
1473 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
ce9e2e1b 1474 cmd->result);
a66098da
LB		 1475 }
1476
a66098da
LB		 1477 return rc;
1478}
1479
1480/*
1481 * GET_HW_SPEC.
1482 */
1483struct mwl8k_cmd_get_hw_spec {
1484 struct mwl8k_cmd_pkt header;
1485 __u8 hw_rev;
1486 __u8 host_interface;
1487 __le16 num_mcaddrs;
d89173f2 1488 __u8 perm_addr[ETH_ALEN];
a66098da
LB		 1489 __le16 region_code;
1490 __le32 fw_rev;
1491 __le32 ps_cookie;
1492 __le32 caps;
1493 __u8 mcs_bitmap[16];
1494 __le32 rx_queue_ptr;
1495 __le32 num_tx_queues;
1496 __le32 tx_queue_ptrs[MWL8K_TX_QUEUES];
1497 __le32 caps2;
1498 __le32 num_tx_desc_per_queue;
1499 __le32 total_rx_desc;
1500} __attribute__((packed));
1501
1502static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw *hw)
1503{
1504 struct mwl8k_priv *priv = hw->priv;
1505 struct mwl8k_cmd_get_hw_spec *cmd;
1506 int rc;
1507 int i;
1508
1509 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1510 if (cmd == NULL)
1511 return -ENOMEM;
1512
1513 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
1514 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1515
1516 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
1517 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
1518 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rx_desc_dma);
4ff6432e 1519 cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES);
a66098da
LB		 1520 for (i = 0; i < MWL8K_TX_QUEUES; i++)
1521 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].tx_desc_dma);
4ff6432e
LB		 1522 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
1523 cmd->total_rx_desc = cpu_to_le32(MWL8K_RX_DESCS);
a66098da
LB		 1524
1525 rc = mwl8k_post_cmd(hw, &cmd->header);
1526
1527 if (!rc) {
1528 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
1529 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
4ff6432e 1530 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
a66098da 1531 priv->hw_rev = cmd->hw_rev;
a66098da
LB		 1532 }
1533
1534 kfree(cmd);
1535 return rc;
1536}
1537
1538/*
1539 * CMD_MAC_MULTICAST_ADR.
1540 */
1541struct mwl8k_cmd_mac_multicast_adr {
1542 struct mwl8k_cmd_pkt header;
1543 __le16 action;
1544 __le16 numaddr;
ce9e2e1b 1545 __u8 addr[0][ETH_ALEN];
a66098da
LB		 1546};
1547
1548#define MWL8K_ENABLE_RX_MULTICAST 0x000F
ce9e2e1b 1549
e81cd2d6
LB		 1550static struct mwl8k_cmd_pkt *
1551__mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw,
1552 int mc_count, struct dev_addr_list *mclist)
a66098da 1553{
e81cd2d6 1554 struct mwl8k_priv *priv = hw->priv;
a66098da 1555 struct mwl8k_cmd_mac_multicast_adr *cmd;
e81cd2d6
LB		 1556 int size;
1557 int i;
1558
1559 if (mc_count > priv->num_mcaddrs)
1560 mc_count = priv->num_mcaddrs;
1561
1562 size = sizeof(*cmd) + mc_count * ETH_ALEN;
ce9e2e1b 1563
e81cd2d6 1564 cmd = kzalloc(size, GFP_ATOMIC);
a66098da 1565 if (cmd == NULL)
e81cd2d6 1566 return NULL;
a66098da
LB		 1567
1568 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
1569 cmd->header.length = cpu_to_le16(size);
1570 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
1571 cmd->numaddr = cpu_to_le16(mc_count);
ce9e2e1b 1572
e81cd2d6 1573 for (i = 0; i < mc_count && mclist; i++) {
d89173f2 1574 if (mclist->da_addrlen != ETH_ALEN) {
e81cd2d6
LB		 1575 kfree(cmd);
1576 return NULL;
a66098da 1577 }
e81cd2d6 1578 memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN);
a66098da
LB		 1579 mclist = mclist->next;
1580 }
1581
e81cd2d6 1582 return &cmd->header;
a66098da
LB		 1583}
1584
1585/*
1586 * CMD_802_11_GET_STAT.
1587 */
1588struct mwl8k_cmd_802_11_get_stat {
1589 struct mwl8k_cmd_pkt header;
1590 __le16 action;
1591 __le32 stats[64];
1592} __attribute__((packed));
1593
1594#define MWL8K_STAT_ACK_FAILURE 9
1595#define MWL8K_STAT_RTS_FAILURE 12
1596#define MWL8K_STAT_FCS_ERROR 24
1597#define MWL8K_STAT_RTS_SUCCESS 11
1598
1599static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw *hw,
1600 struct ieee80211_low_level_stats *stats)
1601{
1602 struct mwl8k_cmd_802_11_get_stat *cmd;
1603 int rc;
1604
1605 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1606 if (cmd == NULL)
1607 return -ENOMEM;
1608
1609 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
1610 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1611 cmd->action = cpu_to_le16(MWL8K_CMD_GET);
1612
1613 rc = mwl8k_post_cmd(hw, &cmd->header);
1614 if (!rc) {
1615 stats->dot11ACKFailureCount =
1616 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
1617 stats->dot11RTSFailureCount =
1618 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
1619 stats->dot11FCSErrorCount =
1620 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
1621 stats->dot11RTSSuccessCount =
1622 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
1623 }
1624 kfree(cmd);
1625
1626 return rc;
1627}
1628
1629/*
1630 * CMD_802_11_RADIO_CONTROL.
1631 */
1632struct mwl8k_cmd_802_11_radio_control {
1633 struct mwl8k_cmd_pkt header;
1634 __le16 action;
1635 __le16 control;
1636 __le16 radio_on;
1637} __attribute__((packed));
1638
c46563b7
LB		 1639static int
1640mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
a66098da
LB		 1641{
1642 struct mwl8k_priv *priv = hw->priv;
1643 struct mwl8k_cmd_802_11_radio_control *cmd;
1644 int rc;
1645
c46563b7 1646 if (enable == priv->radio_on && !force)
a66098da
LB		 1647 return 0;
1648
a66098da
LB		 1649 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1650 if (cmd == NULL)
1651 return -ENOMEM;
1652
1653 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
1654 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1655 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
68ce3884 1656 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
a66098da
LB		 1657 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
1658
1659 rc = mwl8k_post_cmd(hw, &cmd->header);
1660 kfree(cmd);
1661
1662 if (!rc)
c46563b7 1663 priv->radio_on = enable;
a66098da
LB		 1664
1665 return rc;
1666}
1667
c46563b7
LB		 1668static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw *hw)
1669{
1670 return mwl8k_cmd_802_11_radio_control(hw, 0, 0);
1671}
1672
1673static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw *hw)
1674{
1675 return mwl8k_cmd_802_11_radio_control(hw, 1, 0);
1676}
1677
a66098da
LB		 1678static int
1679mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
1680{
1681 struct mwl8k_priv *priv;
1682
1683 if (hw == NULL || hw->priv == NULL)
1684 return -EINVAL;
1685 priv = hw->priv;
1686
68ce3884 1687 priv->radio_short_preamble = short_preamble;
a66098da 1688
c46563b7 1689 return mwl8k_cmd_802_11_radio_control(hw, 1, 1);
a66098da
LB		 1690}
1691
1692/*
1693 * CMD_802_11_RF_TX_POWER.
1694 */
1695#define MWL8K_TX_POWER_LEVEL_TOTAL 8
1696
1697struct mwl8k_cmd_802_11_rf_tx_power {
1698 struct mwl8k_cmd_pkt header;
1699 __le16 action;
1700 __le16 support_level;
1701 __le16 current_level;
1702 __le16 reserved;
1703 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
1704} __attribute__((packed));
1705
1706static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw *hw, int dBm)
1707{
1708 struct mwl8k_cmd_802_11_rf_tx_power *cmd;
1709 int rc;
1710
1711 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1712 if (cmd == NULL)
1713 return -ENOMEM;
1714
1715 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
1716 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1717 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1718 cmd->support_level = cpu_to_le16(dBm);
1719
1720 rc = mwl8k_post_cmd(hw, &cmd->header);
1721 kfree(cmd);
1722
1723 return rc;
1724}
1725
1726/*
1727 * CMD_SET_PRE_SCAN.
1728 */
1729struct mwl8k_cmd_set_pre_scan {
1730 struct mwl8k_cmd_pkt header;
1731} __attribute__((packed));
1732
1733static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
1734{
1735 struct mwl8k_cmd_set_pre_scan *cmd;
1736 int rc;
1737
1738 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1739 if (cmd == NULL)
1740 return -ENOMEM;
1741
1742 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
1743 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1744
1745 rc = mwl8k_post_cmd(hw, &cmd->header);
1746 kfree(cmd);
1747
1748 return rc;
1749}
1750
1751/*
1752 * CMD_SET_POST_SCAN.
1753 */
1754struct mwl8k_cmd_set_post_scan {
1755 struct mwl8k_cmd_pkt header;
1756 __le32 isibss;
d89173f2 1757 __u8 bssid[ETH_ALEN];
a66098da
LB		 1758} __attribute__((packed));
1759
1760static int
ce9e2e1b 1761mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 *mac)
a66098da
LB		 1762{
1763 struct mwl8k_cmd_set_post_scan *cmd;
1764 int rc;
1765
1766 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1767 if (cmd == NULL)
1768 return -ENOMEM;
1769
1770 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
1771 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1772 cmd->isibss = 0;
d89173f2 1773 memcpy(cmd->bssid, mac, ETH_ALEN);
a66098da
LB		 1774
1775 rc = mwl8k_post_cmd(hw, &cmd->header);
1776 kfree(cmd);
1777
1778 return rc;
1779}
1780
1781/*
1782 * CMD_SET_RF_CHANNEL.
1783 */
1784struct mwl8k_cmd_set_rf_channel {
1785 struct mwl8k_cmd_pkt header;
1786 __le16 action;
1787 __u8 current_channel;
1788 __le32 channel_flags;
1789} __attribute__((packed));
1790
1791static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
1792 struct ieee80211_channel *channel)
1793{
1794 struct mwl8k_cmd_set_rf_channel *cmd;
1795 int rc;
1796
1797 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1798 if (cmd == NULL)
1799 return -ENOMEM;
1800
1801 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
1802 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1803 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1804 cmd->current_channel = channel->hw_value;
1805 if (channel->band == IEEE80211_BAND_2GHZ)
1806 cmd->channel_flags = cpu_to_le32(0x00000081);
1807 else
1808 cmd->channel_flags = cpu_to_le32(0x00000000);
1809
1810 rc = mwl8k_post_cmd(hw, &cmd->header);
1811 kfree(cmd);
1812
1813 return rc;
1814}
1815
1816/*
1817 * CMD_SET_SLOT.
1818 */
1819struct mwl8k_cmd_set_slot {
1820 struct mwl8k_cmd_pkt header;
1821 __le16 action;
1822 __u8 short_slot;
1823} __attribute__((packed));
1824
5539bb51 1825static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
a66098da
LB		 1826{
1827 struct mwl8k_cmd_set_slot *cmd;
1828 int rc;
1829
1830 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1831 if (cmd == NULL)
1832 return -ENOMEM;
1833
1834 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
1835 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1836 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
5539bb51 1837 cmd->short_slot = short_slot_time;
a66098da
LB		 1838
1839 rc = mwl8k_post_cmd(hw, &cmd->header);
1840 kfree(cmd);
1841
1842 return rc;
1843}
1844
1845/*
1846 * CMD_MIMO_CONFIG.
1847 */
1848struct mwl8k_cmd_mimo_config {
1849 struct mwl8k_cmd_pkt header;
1850 __le32 action;
1851 __u8 rx_antenna_map;
1852 __u8 tx_antenna_map;
1853} __attribute__((packed));
1854
1855static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
1856{
1857 struct mwl8k_cmd_mimo_config *cmd;
1858 int rc;
1859
1860 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1861 if (cmd == NULL)
1862 return -ENOMEM;
1863
1864 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
1865 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1866 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
1867 cmd->rx_antenna_map = rx;
1868 cmd->tx_antenna_map = tx;
1869
1870 rc = mwl8k_post_cmd(hw, &cmd->header);
1871 kfree(cmd);
1872
1873 return rc;
1874}
1875
1876/*
1877 * CMD_ENABLE_SNIFFER.
1878 */
1879struct mwl8k_cmd_enable_sniffer {
1880 struct mwl8k_cmd_pkt header;
1881 __le32 action;
1882} __attribute__((packed));
1883
1884static int mwl8k_enable_sniffer(struct ieee80211_hw *hw, bool enable)
1885{
1886 struct mwl8k_cmd_enable_sniffer *cmd;
1887 int rc;
1888
1889 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1890 if (cmd == NULL)
1891 return -ENOMEM;
1892
1893 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
1894 cmd->header.length = cpu_to_le16(sizeof(*cmd));
ce9e2e1b 1895 cmd->action = cpu_to_le32(!!enable);
a66098da
LB		 1896
1897 rc = mwl8k_post_cmd(hw, &cmd->header);
1898 kfree(cmd);
1899
1900 return rc;
1901}
1902
1903/*
ce9e2e1b 1904 * CMD_SET_RATEADAPT_MODE.
a66098da
LB		 1905 */
1906struct mwl8k_cmd_set_rate_adapt_mode {
1907 struct mwl8k_cmd_pkt header;
1908 __le16 action;
1909 __le16 mode;
1910} __attribute__((packed));
1911
1912static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw *hw, __u16 mode)
1913{
1914 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
1915 int rc;
1916
1917 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1918 if (cmd == NULL)
1919 return -ENOMEM;
1920
1921 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
1922 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1923 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
1924 cmd->mode = cpu_to_le16(mode);
1925
1926 rc = mwl8k_post_cmd(hw, &cmd->header);
1927 kfree(cmd);
1928
1929 return rc;
1930}
1931
1932/*
1933 * CMD_SET_WMM_MODE.
1934 */
1935struct mwl8k_cmd_set_wmm {
1936 struct mwl8k_cmd_pkt header;
1937 __le16 action;
1938} __attribute__((packed));
1939
1940static int mwl8k_set_wmm(struct ieee80211_hw *hw, bool enable)
1941{
1942 struct mwl8k_priv *priv = hw->priv;
1943 struct mwl8k_cmd_set_wmm *cmd;
1944 int rc;
1945
1946 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1947 if (cmd == NULL)
1948 return -ENOMEM;
1949
1950 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
1951 cmd->header.length = cpu_to_le16(sizeof(*cmd));
0439b1f5 1952 cmd->action = cpu_to_le16(!!enable);
a66098da
LB		 1953
1954 rc = mwl8k_post_cmd(hw, &cmd->header);
1955 kfree(cmd);
1956
1957 if (!rc)
0439b1f5 1958 priv->wmm_enabled = enable;
a66098da
LB		 1959
1960 return rc;
1961}
1962
1963/*
1964 * CMD_SET_RTS_THRESHOLD.
1965 */
1966struct mwl8k_cmd_rts_threshold {
1967 struct mwl8k_cmd_pkt header;
1968 __le16 action;
1969 __le16 threshold;
1970} __attribute__((packed));
1971
1972static int mwl8k_rts_threshold(struct ieee80211_hw *hw,
1973 u16 action, u16 *threshold)
1974{
1975 struct mwl8k_cmd_rts_threshold *cmd;
1976 int rc;
1977
1978 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
1979 if (cmd == NULL)
1980 return -ENOMEM;
1981
1982 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
1983 cmd->header.length = cpu_to_le16(sizeof(*cmd));
1984 cmd->action = cpu_to_le16(action);
1985 cmd->threshold = cpu_to_le16(*threshold);
1986
1987 rc = mwl8k_post_cmd(hw, &cmd->header);
1988 kfree(cmd);
1989
1990 return rc;
1991}
1992
1993/*
1994 * CMD_SET_EDCA_PARAMS.
1995 */
1996struct mwl8k_cmd_set_edca_params {
1997 struct mwl8k_cmd_pkt header;
1998
1999 /* See MWL8K_SET_EDCA_XXX below */
2000 __le16 action;
2001
2002 /* TX opportunity in units of 32 us */
2003 __le16 txop;
2004
2005 /* Log exponent of max contention period: 0...15*/
2006 __u8 log_cw_max;
2007
2008 /* Log exponent of min contention period: 0...15 */
2009 __u8 log_cw_min;
2010
2011 /* Adaptive interframe spacing in units of 32us */
2012 __u8 aifs;
2013
2014 /* TX queue to configure */
2015 __u8 txq;
2016} __attribute__((packed));
2017
a66098da
LB		 2018#define MWL8K_SET_EDCA_CW 0x01
2019#define MWL8K_SET_EDCA_TXOP 0x02
2020#define MWL8K_SET_EDCA_AIFS 0x04
2021
2022#define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2023 MWL8K_SET_EDCA_TXOP | \
2024 MWL8K_SET_EDCA_AIFS)
2025
2026static int
2027mwl8k_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
2028 __u16 cw_min, __u16 cw_max,
2029 __u8 aifs, __u16 txop)
2030{
2031 struct mwl8k_cmd_set_edca_params *cmd;
a66098da
LB		 2032 int rc;
2033
2034 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2035 if (cmd == NULL)
2036 return -ENOMEM;
2037
a66098da
LB		 2038 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
2039 cmd->header.length = cpu_to_le16(sizeof(*cmd));
a66098da
LB		 2040 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
2041 cmd->txop = cpu_to_le16(txop);
ce9e2e1b
LB		 2042 cmd->log_cw_max = (u8)ilog2(cw_max + 1);
2043 cmd->log_cw_min = (u8)ilog2(cw_min + 1);
a66098da
LB		 2044 cmd->aifs = aifs;
2045 cmd->txq = qnum;
2046
2047 rc = mwl8k_post_cmd(hw, &cmd->header);
2048 kfree(cmd);
2049
2050 return rc;
2051}
2052
2053/*
2054 * CMD_FINALIZE_JOIN.
2055 */
2056
2057/* FJ beacon buffer size is compiled into the firmware. */
2058#define MWL8K_FJ_BEACON_MAXLEN 128
2059
2060struct mwl8k_cmd_finalize_join {
2061 struct mwl8k_cmd_pkt header;
2062 __le32 sleep_interval; /* Number of beacon periods to sleep */
2063 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
2064} __attribute__((packed));
2065
2066static int mwl8k_finalize_join(struct ieee80211_hw *hw, void *frame,
2067 __u16 framelen, __u16 dtim)
2068{
2069 struct mwl8k_cmd_finalize_join *cmd;
2070 struct ieee80211_mgmt *payload = frame;
2071 u16 hdrlen;
2072 u32 payload_len;
2073 int rc;
2074
2075 if (frame == NULL)
2076 return -EINVAL;
2077
2078 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2079 if (cmd == NULL)
2080 return -ENOMEM;
2081
2082 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
2083 cmd->header.length = cpu_to_le16(sizeof(*cmd));
ce9e2e1b 2084 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
a66098da
LB		 2085
2086 hdrlen = ieee80211_hdrlen(payload->frame_control);
2087
2088 payload_len = framelen > hdrlen ? framelen - hdrlen : 0;
2089
2090 /* XXX TBD Might just have to abort and return an error */
2091 if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2092 printk(KERN_ERR "%s(): WARNING: Incomplete beacon "
2093 "sent to firmware. Sz=%u MAX=%u\n", __func__,
2094 payload_len, MWL8K_FJ_BEACON_MAXLEN);
2095
ce9e2e1b
LB		 2096 if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
2097 payload_len = MWL8K_FJ_BEACON_MAXLEN;
a66098da
LB		 2098
2099 if (payload && payload_len)
2100 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
2101
2102 rc = mwl8k_post_cmd(hw, &cmd->header);
2103 kfree(cmd);
2104 return rc;
2105}
2106
2107/*
2108 * CMD_UPDATE_STADB.
2109 */
2110struct mwl8k_cmd_update_sta_db {
2111 struct mwl8k_cmd_pkt header;
2112
2113 /* See STADB_ACTION_TYPE */
2114 __le32 action;
2115
2116 /* Peer MAC address */
d89173f2 2117 __u8 peer_addr[ETH_ALEN];
a66098da
LB		 2118
2119 __le32 reserved;
2120
2121 /* Peer info - valid during add/update. */
2122 struct peer_capability_info peer_info;
2123} __attribute__((packed));
2124
2125static int mwl8k_cmd_update_sta_db(struct ieee80211_hw *hw,
2126 struct ieee80211_vif *vif, __u32 action)
2127{
2128 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2129 struct ieee80211_bss_conf *info = &mv_vif->bss_info;
2130 struct mwl8k_cmd_update_sta_db *cmd;
2131 struct peer_capability_info *peer_info;
2132 struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
a66098da
LB		 2133 int rc;
2134 __u8 count, *rates;
2135
2136 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2137 if (cmd == NULL)
2138 return -ENOMEM;
2139
2140 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
2141 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2142
2143 cmd->action = cpu_to_le32(action);
2144 peer_info = &cmd->peer_info;
d89173f2 2145 memcpy(cmd->peer_addr, mv_vif->bssid, ETH_ALEN);
a66098da
LB		 2146
2147 switch (action) {
2148 case MWL8K_STA_DB_ADD_ENTRY:
2149 case MWL8K_STA_DB_MODIFY_ENTRY:
2150 /* Build peer_info block */
2151 peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
2152 peer_info->basic_caps = cpu_to_le16(info->assoc_capability);
2153 peer_info->interop = 1;
2154 peer_info->amsdu_enabled = 0;
2155
2156 rates = peer_info->legacy_rates;
ce9e2e1b 2157 for (count = 0; count < mv_vif->legacy_nrates; count++)
a66098da
LB		 2158 rates[count] = bitrates[count].hw_value;
2159
2160 rc = mwl8k_post_cmd(hw, &cmd->header);
2161 if (rc == 0)
2162 mv_vif->peer_id = peer_info->station_id;
2163
2164 break;
2165
2166 case MWL8K_STA_DB_DEL_ENTRY:
2167 case MWL8K_STA_DB_FLUSH:
2168 default:
2169 rc = mwl8k_post_cmd(hw, &cmd->header);
2170 if (rc == 0)
2171 mv_vif->peer_id = 0;
2172 break;
2173 }
2174 kfree(cmd);
2175
2176 return rc;
2177}
2178
2179/*
2180 * CMD_SET_AID.
2181 */
a66098da
LB		 2182#define MWL8K_RATE_INDEX_MAX_ARRAY 14
2183
2184#define MWL8K_FRAME_PROT_DISABLED 0x00
2185#define MWL8K_FRAME_PROT_11G 0x07
2186#define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2187#define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
a66098da
LB		 2188
2189struct mwl8k_cmd_update_set_aid {
2190 struct mwl8k_cmd_pkt header;
2191 __le16 aid;
2192
2193 /* AP's MAC address (BSSID) */
d89173f2 2194 __u8 bssid[ETH_ALEN];
a66098da
LB		 2195 __le16 protection_mode;
2196 __u8 supp_rates[MWL8K_RATE_INDEX_MAX_ARRAY];
2197} __attribute__((packed));
2198
2199static int mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
2200 struct ieee80211_vif *vif)
2201{
2202 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2203 struct ieee80211_bss_conf *info = &mv_vif->bss_info;
2204 struct mwl8k_cmd_update_set_aid *cmd;
2205 struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
2206 int count;
2207 u16 prot_mode;
2208 int rc;
2209
2210 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2211 if (cmd == NULL)
2212 return -ENOMEM;
2213
2214 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
2215 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2216 cmd->aid = cpu_to_le16(info->aid);
2217
d89173f2 2218 memcpy(cmd->bssid, mv_vif->bssid, ETH_ALEN);
a66098da 2219
a66098da
LB		 2220 if (info->use_cts_prot) {
2221 prot_mode = MWL8K_FRAME_PROT_11G;
2222 } else {
9ed6bcce 2223 switch (info->ht_operation_mode &
a66098da
LB		 2224 IEEE80211_HT_OP_MODE_PROTECTION) {
2225 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
2226 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
2227 break;
2228 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
2229 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
2230 break;
2231 default:
2232 prot_mode = MWL8K_FRAME_PROT_DISABLED;
2233 break;
2234 }
2235 }
a66098da
LB		 2236 cmd->protection_mode = cpu_to_le16(prot_mode);
2237
2238 for (count = 0; count < mv_vif->legacy_nrates; count++)
2239 cmd->supp_rates[count] = bitrates[count].hw_value;
2240
2241 rc = mwl8k_post_cmd(hw, &cmd->header);
2242 kfree(cmd);
2243
2244 return rc;
2245}
2246
2247/*
2248 * CMD_SET_RATE.
2249 */
2250struct mwl8k_cmd_update_rateset {
2251 struct mwl8k_cmd_pkt header;
2252 __u8 legacy_rates[MWL8K_RATE_INDEX_MAX_ARRAY];
2253
2254 /* Bitmap for supported MCS codes. */
2255 __u8 mcs_set[MWL8K_IEEE_LEGACY_DATA_RATES];
2256 __u8 reserved[MWL8K_IEEE_LEGACY_DATA_RATES];
2257} __attribute__((packed));
2258
2259static int mwl8k_update_rateset(struct ieee80211_hw *hw,
2260 struct ieee80211_vif *vif)
2261{
2262 struct mwl8k_vif *mv_vif = MWL8K_VIF(vif);
2263 struct mwl8k_cmd_update_rateset *cmd;
2264 struct ieee80211_rate *bitrates = mv_vif->legacy_rates;
2265 int count;
2266 int rc;
2267
2268 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2269 if (cmd == NULL)
2270 return -ENOMEM;
2271
2272 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
2273 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2274
2275 for (count = 0; count < mv_vif->legacy_nrates; count++)
2276 cmd->legacy_rates[count] = bitrates[count].hw_value;
2277
2278 rc = mwl8k_post_cmd(hw, &cmd->header);
2279 kfree(cmd);
2280
2281 return rc;
2282}
2283
2284/*
2285 * CMD_USE_FIXED_RATE.
2286 */
2287#define MWL8K_RATE_TABLE_SIZE 8
2288#define MWL8K_UCAST_RATE 0
a66098da
LB		 2289#define MWL8K_USE_AUTO_RATE 0x0002
2290
2291struct mwl8k_rate_entry {
2292 /* Set to 1 if HT rate, 0 if legacy. */
2293 __le32 is_ht_rate;
2294
2295 /* Set to 1 to use retry_count field. */
2296 __le32 enable_retry;
2297
2298 /* Specified legacy rate or MCS. */
2299 __le32 rate;
2300
2301 /* Number of allowed retries. */
2302 __le32 retry_count;
2303} __attribute__((packed));
2304
2305struct mwl8k_rate_table {
2306 /* 1 to allow specified rate and below */
2307 __le32 allow_rate_drop;
2308 __le32 num_rates;
2309 struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE];
2310} __attribute__((packed));
2311
2312struct mwl8k_cmd_use_fixed_rate {
2313 struct mwl8k_cmd_pkt header;
2314 __le32 action;
2315 struct mwl8k_rate_table rate_table;
2316
2317 /* Unicast, Broadcast or Multicast */
2318 __le32 rate_type;
2319 __le32 reserved1;
2320 __le32 reserved2;
2321} __attribute__((packed));
2322
2323static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw,
2324 u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table)
2325{
2326 struct mwl8k_cmd_use_fixed_rate *cmd;
2327 int count;
2328 int rc;
2329
2330 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2331 if (cmd == NULL)
2332 return -ENOMEM;
2333
2334 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
2335 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2336
2337 cmd->action = cpu_to_le32(action);
2338 cmd->rate_type = cpu_to_le32(rate_type);
2339
2340 if (rate_table != NULL) {
2341 /* Copy over each field manually so
2342 * that bitflipping can be done
2343 */
2344 cmd->rate_table.allow_rate_drop =
2345 cpu_to_le32(rate_table->allow_rate_drop);
2346 cmd->rate_table.num_rates =
2347 cpu_to_le32(rate_table->num_rates);
2348
2349 for (count = 0; count < rate_table->num_rates; count++) {
2350 struct mwl8k_rate_entry *dst =
2351 &cmd->rate_table.rate_entry[count];
2352 struct mwl8k_rate_entry *src =
2353 &rate_table->rate_entry[count];
2354
2355 dst->is_ht_rate = cpu_to_le32(src->is_ht_rate);
2356 dst->enable_retry = cpu_to_le32(src->enable_retry);
2357 dst->rate = cpu_to_le32(src->rate);
2358 dst->retry_count = cpu_to_le32(src->retry_count);
2359 }
2360 }
2361
2362 rc = mwl8k_post_cmd(hw, &cmd->header);
2363 kfree(cmd);
2364
2365 return rc;
2366}
2367
2368
2369/*
2370 * Interrupt handling.
2371 */
2372static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
2373{
2374 struct ieee80211_hw *hw = dev_id;
2375 struct mwl8k_priv *priv = hw->priv;
2376 u32 status;
2377
2378 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
2379 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
2380
a66098da
LB		 2381 if (!status)
2382 return IRQ_NONE;
2383
2384 if (status & MWL8K_A2H_INT_TX_DONE)
2385 tasklet_schedule(&priv->tx_reclaim_task);
2386
2387 if (status & MWL8K_A2H_INT_RX_READY) {
2388 while (rxq_process(hw, 0, 1))
2389 rxq_refill(hw, 0, 1);
2390 }
2391
2392 if (status & MWL8K_A2H_INT_OPC_DONE) {
618952a7 2393 if (priv->hostcmd_wait != NULL)
a66098da 2394 complete(priv->hostcmd_wait);
a66098da
LB		 2395 }
2396
2397 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
618952a7
LB		 2398 if (!mutex_is_locked(&priv->fw_mutex) &&
2399 priv->radio_on && mwl8k_txq_busy(priv))
2400 mwl8k_tx_start(priv);
a66098da
LB		 2401 }
2402
2403 return IRQ_HANDLED;
2404}
2405
2406
2407/*
2408 * Core driver operations.
2409 */
2410static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2411{
2412 struct mwl8k_priv *priv = hw->priv;
2413 int index = skb_get_queue_mapping(skb);
2414 int rc;
2415
2416 if (priv->current_channel == NULL) {
2417 printk(KERN_DEBUG "%s: dropped TX frame since radio "
2418 "disabled\n", priv->name);
2419 dev_kfree_skb(skb);
2420 return NETDEV_TX_OK;
2421 }
2422
2423 rc = mwl8k_txq_xmit(hw, index, skb);
2424
2425 return rc;
2426}
2427
2428struct mwl8k_work_struct {
2429 /* Initialized by mwl8k_queue_work(). */
2430 struct work_struct wt;
2431
2432 /* Required field passed in to mwl8k_queue_work(). */
2433 struct ieee80211_hw *hw;
2434
2435 /* Required field passed in to mwl8k_queue_work(). */
2436 int (*wfunc)(struct work_struct *w);
2437
2438 /* Initialized by mwl8k_queue_work(). */
2439 struct completion *cmd_wait;
2440
2441 /* Result code. */
2442 int rc;
a66098da
LB		 2443};
2444
a66098da
LB		 2445static void mwl8k_config_thread(struct work_struct *wt)
2446{
2447 struct mwl8k_work_struct *worker = (struct mwl8k_work_struct *)wt;
2448 struct ieee80211_hw *hw = worker->hw;
a66098da
LB		 2449 int rc = 0;
2450
618952a7
LB		 2451 rc = mwl8k_fw_lock(hw);
2452 if (!rc) {
a66098da 2453 rc = worker->wfunc(wt);
618952a7
LB		 2454 mwl8k_fw_unlock(hw);
2455 }
a66098da
LB		 2456
2457 worker->rc = rc;
950d5b01 2458 complete(worker->cmd_wait);
a66098da
LB		 2459}
2460
2461static int mwl8k_queue_work(struct ieee80211_hw *hw,
2462 struct mwl8k_work_struct *worker,
a66098da
LB		 2463 int (*wfunc)(struct work_struct *w))
2464{
950d5b01 2465 struct mwl8k_priv *priv = hw->priv;
a66098da
LB		 2466 unsigned long timeout = 0;
2467 int rc = 0;
2468
2469 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2470
a66098da
LB		 2471 worker->hw = hw;
2472 worker->cmd_wait = &cmd_wait;
2473 worker->rc = 1;
2474 worker->wfunc = wfunc;
2475
2476 INIT_WORK(&worker->wt, mwl8k_config_thread);
950d5b01 2477 queue_work(priv->config_wq, &worker->wt);
a66098da 2478
950d5b01
LB		 2479 timeout = wait_for_completion_timeout(&cmd_wait,
2480 msecs_to_jiffies(10000));
a66098da 2481
950d5b01
LB		 2482 if (timeout)
2483 rc = worker->rc;
2484 else {
2485 cancel_work_sync(&worker->wt);
2486 rc = -ETIMEDOUT;
a66098da
LB		 2487 }
2488
2489 return rc;
2490}
2491
a66098da
LB		 2492static int mwl8k_start(struct ieee80211_hw *hw)
2493{
a66098da
LB		 2494 struct mwl8k_priv *priv = hw->priv;
2495 int rc;
2496
a66098da
LB		 2497 rc = request_irq(priv->pdev->irq, &mwl8k_interrupt,
2498 IRQF_SHARED, MWL8K_NAME, hw);
2499 if (rc) {
2500 printk(KERN_ERR "%s: failed to register IRQ handler\n",
2501 priv->name);
2ec610cb 2502 return -EIO;
a66098da
LB		 2503 }
2504
2ec610cb
LB		 2505 /* Enable tx reclaim tasklet */
2506 tasklet_enable(&priv->tx_reclaim_task);
2507
a66098da 2508 /* Enable interrupts */
c23b5a69 2509 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
a66098da 2510
2ec610cb
LB		 2511 rc = mwl8k_fw_lock(hw);
2512 if (!rc) {
2513 rc = mwl8k_cmd_802_11_radio_enable(hw);
a66098da 2514
2ec610cb
LB		 2515 if (!rc)
2516 rc = mwl8k_cmd_set_pre_scan(hw);
a66098da 2517
2ec610cb
LB		 2518 if (!rc)
2519 rc = mwl8k_cmd_set_post_scan(hw,
2520 "\x00\x00\x00\x00\x00\x00");
2521
2522 if (!rc)
2523 rc = mwl8k_cmd_setrateadaptmode(hw, 0);
a66098da 2524
2ec610cb
LB		 2525 if (!rc)
2526 rc = mwl8k_set_wmm(hw, 0);
a66098da 2527
2ec610cb
LB		 2528 if (!rc)
2529 rc = mwl8k_enable_sniffer(hw, 0);
a66098da 2530
2ec610cb
LB		 2531 mwl8k_fw_unlock(hw);
2532 }
2533
2534 if (rc) {
2535 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
2536 free_irq(priv->pdev->irq, hw);
2537 tasklet_disable(&priv->tx_reclaim_task);
2538 }
a66098da
LB		 2539
2540 return rc;
2541}
2542
a66098da
LB		 2543static void mwl8k_stop(struct ieee80211_hw *hw)
2544{
a66098da
LB		 2545 struct mwl8k_priv *priv = hw->priv;
2546 int i;
2547
d3cea0b8 2548 mwl8k_cmd_802_11_radio_disable(hw);
a66098da
LB		 2549
2550 ieee80211_stop_queues(hw);
2551
a66098da 2552 /* Disable interrupts */
a66098da 2553 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
a66098da
LB		 2554 free_irq(priv->pdev->irq, hw);
2555
2556 /* Stop finalize join worker */
2557 cancel_work_sync(&priv->finalize_join_worker);
2558 if (priv->beacon_skb != NULL)
2559 dev_kfree_skb(priv->beacon_skb);
2560
2561 /* Stop tx reclaim tasklet */
2562 tasklet_disable(&priv->tx_reclaim_task);
2563
2564 /* Stop config thread */
2565 flush_workqueue(priv->config_wq);
2566
2567 /* Return all skbs to mac80211 */
2568 for (i = 0; i < MWL8K_TX_QUEUES; i++)
2569 mwl8k_txq_reclaim(hw, i, 1);
2570}
2571
2572static int mwl8k_add_interface(struct ieee80211_hw *hw,
2573 struct ieee80211_if_init_conf *conf)
2574{
2575 struct mwl8k_priv *priv = hw->priv;
2576 struct mwl8k_vif *mwl8k_vif;
2577
2578 /*
2579 * We only support one active interface at a time.
2580 */
2581 if (priv->vif != NULL)
2582 return -EBUSY;
2583
2584 /*
2585 * We only support managed interfaces for now.
2586 */
240e86ef 2587 if (conf->type != NL80211_IFTYPE_STATION)
a66098da
LB		 2588 return -EINVAL;
2589
2590 /* Clean out driver private area */
2591 mwl8k_vif = MWL8K_VIF(conf->vif);
2592 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
2593
2594 /* Save the mac address */
d89173f2 2595 memcpy(mwl8k_vif->mac_addr, conf->mac_addr, ETH_ALEN);
a66098da
LB		 2596
2597 /* Back pointer to parent config block */
2598 mwl8k_vif->priv = priv;
2599
2600 /* Setup initial PHY parameters */
ce9e2e1b 2601 memcpy(mwl8k_vif->legacy_rates,
a66098da
LB		 2602 priv->rates, sizeof(mwl8k_vif->legacy_rates));
2603 mwl8k_vif->legacy_nrates = ARRAY_SIZE(priv->rates);
2604
2605 /* Set Initial sequence number to zero */
2606 mwl8k_vif->seqno = 0;
2607
2608 priv->vif = conf->vif;
2609 priv->current_channel = NULL;
2610
2611 return 0;
2612}
2613
2614static void mwl8k_remove_interface(struct ieee80211_hw *hw,
2615 struct ieee80211_if_init_conf *conf)
2616{
2617 struct mwl8k_priv *priv = hw->priv;
2618
2619 if (priv->vif == NULL)
2620 return;
2621
2622 priv->vif = NULL;
2623}
2624
ee03a932 2625static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
a66098da 2626{
a66098da
LB		 2627 struct ieee80211_conf *conf = &hw->conf;
2628 struct mwl8k_priv *priv = hw->priv;
ee03a932 2629 int rc;
a66098da 2630
7595d67a
LB		 2631 if (conf->flags & IEEE80211_CONF_IDLE) {
2632 mwl8k_cmd_802_11_radio_disable(hw);
2633 priv->current_channel = NULL;
ee03a932 2634 return 0;
7595d67a
LB		 2635 }
2636
ee03a932
LB		 2637 rc = mwl8k_fw_lock(hw);
2638 if (rc)
2639 return rc;
a66098da 2640
ee03a932
LB		 2641 rc = mwl8k_cmd_802_11_radio_enable(hw);
2642 if (rc)
2643 goto out;
a66098da 2644
ee03a932
LB		 2645 rc = mwl8k_cmd_set_rf_channel(hw, conf->channel);
2646 if (rc)
2647 goto out;
2648
2649 priv->current_channel = conf->channel;
a66098da
LB		 2650
2651 if (conf->power_level > 18)
2652 conf->power_level = 18;
ee03a932
LB		 2653 rc = mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level);
2654 if (rc)
2655 goto out;
a66098da
LB		 2656
2657 if (mwl8k_cmd_mimo_config(hw, 0x7, 0x7))
2658 rc = -EINVAL;
2659
ee03a932
LB		 2660out:
2661 mwl8k_fw_unlock(hw);
a66098da 2662
ee03a932 2663 return rc;
a66098da
LB		 2664}
2665
3a980d0a
LB		 2666static void mwl8k_bss_info_changed(struct ieee80211_hw *hw,
2667 struct ieee80211_vif *vif,
2668 struct ieee80211_bss_conf *info,
2669 u32 changed)
a66098da 2670{
a66098da
LB		 2671 struct mwl8k_priv *priv = hw->priv;
2672 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3a980d0a
LB		 2673 int rc;
2674
2675 if (changed & BSS_CHANGED_BSSID)
2676 memcpy(mwl8k_vif->bssid, info->bssid, ETH_ALEN);
2677
2678 if ((changed & BSS_CHANGED_ASSOC) == 0)
2679 return;
a66098da 2680
a66098da
LB		 2681 priv->capture_beacon = false;
2682
3a980d0a
LB		 2683 rc = mwl8k_fw_lock(hw);
2684 if (!rc)
2685 return;
2686
a66098da
LB		 2687 if (info->assoc) {
2688 memcpy(&mwl8k_vif->bss_info, info,
2689 sizeof(struct ieee80211_bss_conf));
2690
2691 /* Install rates */
3a980d0a
LB		 2692 rc = mwl8k_update_rateset(hw, vif);
2693 if (rc)
2694 goto out;
a66098da
LB		 2695
2696 /* Turn on rate adaptation */
3a980d0a
LB		 2697 rc = mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE,
2698 MWL8K_UCAST_RATE, NULL);
2699 if (rc)
2700 goto out;
a66098da
LB		 2701
2702 /* Set radio preamble */
3a980d0a
LB		 2703 rc = mwl8k_set_radio_preamble(hw, info->use_short_preamble);
2704 if (rc)
2705 goto out;
a66098da
LB		 2706
2707 /* Set slot time */
3a980d0a
LB		 2708 rc = mwl8k_cmd_set_slot(hw, info->use_short_slot);
2709 if (rc)
2710 goto out;
a66098da
LB		 2711
2712 /* Update peer rate info */
3a980d0a
LB		 2713 rc = mwl8k_cmd_update_sta_db(hw, vif,
2714 MWL8K_STA_DB_MODIFY_ENTRY);
2715 if (rc)
2716 goto out;
a66098da
LB		 2717
2718 /* Set AID */
3a980d0a
LB		 2719 rc = mwl8k_cmd_set_aid(hw, vif);
2720 if (rc)
2721 goto out;
a66098da
LB		 2722
2723 /*
2724 * Finalize the join. Tell rx handler to process
2725 * next beacon from our BSSID.
2726 */
d89173f2 2727 memcpy(priv->capture_bssid, mwl8k_vif->bssid, ETH_ALEN);
a66098da
LB		 2728 priv->capture_beacon = true;
2729 } else {
3a980d0a 2730 rc = mwl8k_cmd_update_sta_db(hw, vif, MWL8K_STA_DB_DEL_ENTRY);
a66098da
LB		 2731 memset(&mwl8k_vif->bss_info, 0,
2732 sizeof(struct ieee80211_bss_conf));
d89173f2 2733 memset(mwl8k_vif->bssid, 0, ETH_ALEN);
a66098da
LB		 2734 }
2735
3a980d0a
LB		 2736out:
2737 mwl8k_fw_unlock(hw);
a66098da
LB		 2738}
2739
e81cd2d6
LB		 2740static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
2741 int mc_count, struct dev_addr_list *mclist)
2742{
2743 struct mwl8k_cmd_pkt *cmd;
2744
2745 cmd = __mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist);
2746
2747 return (unsigned long)cmd;
2748}
2749
a66098da
LB		 2750struct mwl8k_configure_filter_worker {
2751 struct mwl8k_work_struct header;
2752 unsigned int changed_flags;
e81cd2d6
LB		 2753 unsigned int total_flags;
2754 struct mwl8k_cmd_pkt *multicast_adr_cmd;
a66098da
LB		 2755};
2756
2757#define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
2758
2759static int mwl8k_configure_filter_wt(struct work_struct *wt)
2760{
2761 struct mwl8k_configure_filter_worker *worker =
2762 (struct mwl8k_configure_filter_worker *)wt;
a66098da 2763 struct ieee80211_hw *hw = worker->header.hw;
a66098da 2764 struct mwl8k_priv *priv = hw->priv;
a66098da
LB		 2765 int rc = 0;
2766
e81cd2d6
LB		 2767 if (worker->changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2768 if (worker->total_flags & FIF_BCN_PRBRESP_PROMISC)
a66098da
LB		 2769 rc = mwl8k_cmd_set_pre_scan(hw);
2770 else {
a94cc97e
LB		 2771 u8 *bssid;
2772
2773 bssid = "\x00\x00\x00\x00\x00\x00";
2774 if (priv->vif != NULL)
2775 bssid = MWL8K_VIF(priv->vif)->bssid;
2776
2777 rc = mwl8k_cmd_set_post_scan(hw, bssid);
a66098da
LB		 2778 }
2779 }
2780
e81cd2d6
LB		 2781 if (!rc && worker->multicast_adr_cmd != NULL)
2782 rc = mwl8k_post_cmd(hw, worker->multicast_adr_cmd);
2783 kfree(worker->multicast_adr_cmd);
ce9e2e1b 2784
a66098da
LB		 2785 return rc;
2786}
2787
2788static void mwl8k_configure_filter(struct ieee80211_hw *hw,
2789 unsigned int changed_flags,
2790 unsigned int *total_flags,
3ac64bee 2791 u64 multicast)
a66098da 2792{
e81cd2d6 2793 struct mwl8k_configure_filter_worker *worker;
a66098da
LB		 2794
2795 /* Clear unsupported feature flags */
2796 *total_flags &= MWL8K_SUPPORTED_IF_FLAGS;
2797
3ac64bee 2798 if (!(changed_flags & MWL8K_SUPPORTED_IF_FLAGS))
a66098da
LB		 2799 return;
2800
e81cd2d6 2801 worker = kzalloc(sizeof(*worker), GFP_ATOMIC);
a66098da
LB		 2802 if (worker == NULL)
2803 return;
2804
a66098da 2805 worker->changed_flags = changed_flags;
e81cd2d6
LB		 2806 worker->total_flags = *total_flags;
2807 worker->multicast_adr_cmd = (void *)(unsigned long)multicast;
a66098da 2808
950d5b01 2809 mwl8k_queue_work(hw, &worker->header, mwl8k_configure_filter_wt);
a66098da
LB		 2810}
2811
2812struct mwl8k_set_rts_threshold_worker {
2813 struct mwl8k_work_struct header;
2814 u32 value;
2815};
2816
2817static int mwl8k_set_rts_threshold_wt(struct work_struct *wt)
2818{
2819 struct mwl8k_set_rts_threshold_worker *worker =
2820 (struct mwl8k_set_rts_threshold_worker *)wt;
2821
2822 struct ieee80211_hw *hw = worker->header.hw;
2823 u16 threshold = (u16)(worker->value);
2824 int rc;
2825
2826 rc = mwl8k_rts_threshold(hw, MWL8K_CMD_SET, &threshold);
2827
2828 return rc;
2829}
2830
2831static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
2832{
2833 int rc;
2834 struct mwl8k_set_rts_threshold_worker *worker;
a66098da
LB		 2835
2836 worker = kzalloc(sizeof(*worker), GFP_KERNEL);
2837 if (worker == NULL)
2838 return -ENOMEM;
2839
2840 worker->value = value;
2841
950d5b01 2842 rc = mwl8k_queue_work(hw, &worker->header, mwl8k_set_rts_threshold_wt);
a66098da
LB		 2843 kfree(worker);
2844
2845 if (rc == -ETIMEDOUT) {
2846 printk(KERN_ERR "%s() timed out\n", __func__);
2847 rc = -EINVAL;
2848 }
2849
2850 return rc;
2851}
2852
2853struct mwl8k_conf_tx_worker {
2854 struct mwl8k_work_struct header;
2855 u16 queue;
2856 const struct ieee80211_tx_queue_params *params;
2857};
2858
2859static int mwl8k_conf_tx_wt(struct work_struct *wt)
2860{
2861 struct mwl8k_conf_tx_worker *worker =
2862 (struct mwl8k_conf_tx_worker *)wt;
2863
2864 struct ieee80211_hw *hw = worker->header.hw;
2865 u16 queue = worker->queue;
2866 const struct ieee80211_tx_queue_params *params = worker->params;
2867
2868 struct mwl8k_priv *priv = hw->priv;
2869 int rc = 0;
2870
0439b1f5
LB		 2871 if (!priv->wmm_enabled) {
2872 if (mwl8k_set_wmm(hw, 1)) {
a66098da
LB		 2873 rc = -EINVAL;
2874 goto mwl8k_conf_tx_exit;
0439b1f5 2875 }
a66098da
LB		 2876 }
2877
2878 if (mwl8k_set_edca_params(hw, GET_TXQ(queue), params->cw_min,
2879 params->cw_max, params->aifs, params->txop))
2880 rc = -EINVAL;
2881mwl8k_conf_tx_exit:
2882 return rc;
2883}
2884
2885static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue,
2886 const struct ieee80211_tx_queue_params *params)
2887{
2888 int rc;
2889 struct mwl8k_conf_tx_worker *worker;
a66098da
LB		 2890
2891 worker = kzalloc(sizeof(*worker), GFP_KERNEL);
2892 if (worker == NULL)
2893 return -ENOMEM;
2894
2895 worker->queue = queue;
2896 worker->params = params;
950d5b01 2897 rc = mwl8k_queue_work(hw, &worker->header, mwl8k_conf_tx_wt);
a66098da
LB		 2898 kfree(worker);
2899 if (rc == -ETIMEDOUT) {
2900 printk(KERN_ERR "%s() timed out\n", __func__);
2901 rc = -EINVAL;
2902 }
2903 return rc;
2904}
2905
2906static int mwl8k_get_tx_stats(struct ieee80211_hw *hw,
2907 struct ieee80211_tx_queue_stats *stats)
2908{
2909 struct mwl8k_priv *priv = hw->priv;
2910 struct mwl8k_tx_queue *txq;
2911 int index;
2912
2913 spin_lock_bh(&priv->tx_lock);
2914 for (index = 0; index < MWL8K_TX_QUEUES; index++) {
2915 txq = priv->txq + index;
2916 memcpy(&stats[index], &txq->tx_stats,
2917 sizeof(struct ieee80211_tx_queue_stats));
2918 }
2919 spin_unlock_bh(&priv->tx_lock);
2920 return 0;
2921}
2922
2923struct mwl8k_get_stats_worker {
2924 struct mwl8k_work_struct header;
2925 struct ieee80211_low_level_stats *stats;
2926};
2927
2928static int mwl8k_get_stats_wt(struct work_struct *wt)
2929{
2930 struct mwl8k_get_stats_worker *worker =
2931 (struct mwl8k_get_stats_worker *)wt;
2932
2933 return mwl8k_cmd_802_11_get_stat(worker->header.hw, worker->stats);
2934}
2935
2936static int mwl8k_get_stats(struct ieee80211_hw *hw,
2937 struct ieee80211_low_level_stats *stats)
2938{
2939 int rc;
2940 struct mwl8k_get_stats_worker *worker;
a66098da
LB		 2941
2942 worker = kzalloc(sizeof(*worker), GFP_KERNEL);
2943 if (worker == NULL)
2944 return -ENOMEM;
2945
2946 worker->stats = stats;
950d5b01 2947 rc = mwl8k_queue_work(hw, &worker->header, mwl8k_get_stats_wt);
a66098da
LB		 2948
2949 kfree(worker);
2950 if (rc == -ETIMEDOUT) {
2951 printk(KERN_ERR "%s() timed out\n", __func__);
2952 rc = -EINVAL;
2953 }
2954
2955 return rc;
2956}
2957
2958static const struct ieee80211_ops mwl8k_ops = {
2959 .tx = mwl8k_tx,
2960 .start = mwl8k_start,
2961 .stop = mwl8k_stop,
2962 .add_interface = mwl8k_add_interface,
2963 .remove_interface = mwl8k_remove_interface,
2964 .config = mwl8k_config,
a66098da 2965 .bss_info_changed = mwl8k_bss_info_changed,
3ac64bee 2966 .prepare_multicast = mwl8k_prepare_multicast,
a66098da
LB		 2967 .configure_filter = mwl8k_configure_filter,
2968 .set_rts_threshold = mwl8k_set_rts_threshold,
2969 .conf_tx = mwl8k_conf_tx,
2970 .get_tx_stats = mwl8k_get_tx_stats,
2971 .get_stats = mwl8k_get_stats,
2972};
2973
2974static void mwl8k_tx_reclaim_handler(unsigned long data)
2975{
2976 int i;
2977 struct ieee80211_hw *hw = (struct ieee80211_hw *) data;
2978 struct mwl8k_priv *priv = hw->priv;
2979
2980 spin_lock_bh(&priv->tx_lock);
2981 for (i = 0; i < MWL8K_TX_QUEUES; i++)
2982 mwl8k_txq_reclaim(hw, i, 0);
2983
ce9e2e1b
LB		 2984 if (priv->tx_wait != NULL && mwl8k_txq_busy(priv) == 0) {
2985 complete(priv->tx_wait);
2986 priv->tx_wait = NULL;
a66098da
LB		 2987 }
2988 spin_unlock_bh(&priv->tx_lock);
2989}
2990
2991static void mwl8k_finalize_join_worker(struct work_struct *work)
2992{
2993 struct mwl8k_priv *priv =
2994 container_of(work, struct mwl8k_priv, finalize_join_worker);
2995 struct sk_buff *skb = priv->beacon_skb;
ce9e2e1b 2996 u8 dtim = MWL8K_VIF(priv->vif)->bss_info.dtim_period;
a66098da
LB		 2997
2998 mwl8k_finalize_join(priv->hw, skb->data, skb->len, dtim);
2999 dev_kfree_skb(skb);
3000
3001 priv->beacon_skb = NULL;
3002}
3003
3004static int __devinit mwl8k_probe(struct pci_dev *pdev,
3005 const struct pci_device_id *id)
3006{
3007 struct ieee80211_hw *hw;
3008 struct mwl8k_priv *priv;
a66098da
LB		 3009 int rc;
3010 int i;
3011 u8 *fw;
3012
3013 rc = pci_enable_device(pdev);
3014 if (rc) {
3015 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
3016 MWL8K_NAME);
3017 return rc;
3018 }
3019
3020 rc = pci_request_regions(pdev, MWL8K_NAME);
3021 if (rc) {
3022 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
3023 MWL8K_NAME);
3024 return rc;
3025 }
3026
3027 pci_set_master(pdev);
3028
3029 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
3030 if (hw == NULL) {
3031 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
3032 rc = -ENOMEM;
3033 goto err_free_reg;
3034 }
3035
3036 priv = hw->priv;
3037 priv->hw = hw;
3038 priv->pdev = pdev;
0439b1f5 3039 priv->wmm_enabled = false;
a66098da
LB		 3040 priv->pending_tx_pkts = 0;
3041 strncpy(priv->name, MWL8K_NAME, sizeof(priv->name));
3042
a66098da
LB		 3043 SET_IEEE80211_DEV(hw, &pdev->dev);
3044 pci_set_drvdata(pdev, hw);
3045
3046 priv->regs = pci_iomap(pdev, 1, 0x10000);
3047 if (priv->regs == NULL) {
3048 printk(KERN_ERR "%s: Cannot map device memory\n", priv->name);
3049 goto err_iounmap;
3050 }
3051
3052 memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels));
3053 priv->band.band = IEEE80211_BAND_2GHZ;
3054 priv->band.channels = priv->channels;
3055 priv->band.n_channels = ARRAY_SIZE(mwl8k_channels);
3056 priv->band.bitrates = priv->rates;
3057 priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates);
3058 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3059
3060 BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates));
3061 memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates));
3062
3063 /*
3064 * Extra headroom is the size of the required DMA header
3065 * minus the size of the smallest 802.11 frame (CTS frame).
3066 */
3067 hw->extra_tx_headroom =
3068 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
3069
3070 hw->channel_change_time = 10;
3071
3072 hw->queues = MWL8K_TX_QUEUES;
3073
240e86ef 3074 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
a66098da
LB		 3075
3076 /* Set rssi and noise values to dBm */
ce9e2e1b 3077 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM;
a66098da
LB		 3078 hw->vif_data_size = sizeof(struct mwl8k_vif);
3079 priv->vif = NULL;
3080
3081 /* Set default radio state and preamble */
c46563b7 3082 priv->radio_on = 0;
68ce3884 3083 priv->radio_short_preamble = 0;
a66098da
LB		 3084
3085 /* Finalize join worker */
3086 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
3087
3088 /* TX reclaim tasklet */
3089 tasklet_init(&priv->tx_reclaim_task,
3090 mwl8k_tx_reclaim_handler, (unsigned long)hw);
3091 tasklet_disable(&priv->tx_reclaim_task);
3092
3093 /* Config workthread */
3094 priv->config_wq = create_singlethread_workqueue("mwl8k_config");
3095 if (priv->config_wq == NULL)
3096 goto err_iounmap;
3097
3098 /* Power management cookie */
3099 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
3100 if (priv->cookie == NULL)
3101 goto err_iounmap;
3102
3103 rc = mwl8k_rxq_init(hw, 0);
3104 if (rc)
3105 goto err_iounmap;
3106 rxq_refill(hw, 0, INT_MAX);
3107
618952a7
LB		 3108 mutex_init(&priv->fw_mutex);
3109 priv->fw_mutex_owner = NULL;
3110 priv->fw_mutex_depth = 0;
3111 priv->tx_wait = NULL;
3112 priv->hostcmd_wait = NULL;
3113
a66098da
LB		 3114 spin_lock_init(&priv->tx_lock);
3115
3116 for (i = 0; i < MWL8K_TX_QUEUES; i++) {
3117 rc = mwl8k_txq_init(hw, i);
3118 if (rc)
3119 goto err_free_queues;
3120 }
3121
3122 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
c23b5a69 3123 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
a66098da
LB		 3124 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
3125 iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3126
3127 rc = request_irq(priv->pdev->irq, &mwl8k_interrupt,
3128 IRQF_SHARED, MWL8K_NAME, hw);
3129 if (rc) {
3130 printk(KERN_ERR "%s: failed to register IRQ handler\n",
3131 priv->name);
3132 goto err_free_queues;
3133 }
3134
3135 /* Reset firmware and hardware */
3136 mwl8k_hw_reset(priv);
3137
3138 /* Ask userland hotplug daemon for the device firmware */
3139 rc = mwl8k_request_firmware(priv, (u32)id->driver_data);
3140 if (rc) {
3141 printk(KERN_ERR "%s: Firmware files not found\n", priv->name);
3142 goto err_free_irq;
3143 }
3144
3145 /* Load firmware into hardware */
3146 rc = mwl8k_load_firmware(priv);
3147 if (rc) {
3148 printk(KERN_ERR "%s: Cannot start firmware\n", priv->name);
3149 goto err_stop_firmware;
3150 }
3151
3152 /* Reclaim memory once firmware is successfully loaded */
3153 mwl8k_release_firmware(priv);
3154
3155 /*
3156 * Temporarily enable interrupts. Initial firmware host
3157 * commands use interrupts and avoids polling. Disable
3158 * interrupts when done.
3159 */
c23b5a69 3160 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
a66098da
LB		 3161
3162 /* Get config data, mac addrs etc */
3163 rc = mwl8k_cmd_get_hw_spec(hw);
3164 if (rc) {
3165 printk(KERN_ERR "%s: Cannot initialise firmware\n", priv->name);
3166 goto err_stop_firmware;
3167 }
3168
3169 /* Turn radio off */
c46563b7 3170 rc = mwl8k_cmd_802_11_radio_disable(hw);
a66098da
LB		 3171 if (rc) {
3172 printk(KERN_ERR "%s: Cannot disable\n", priv->name);
3173 goto err_stop_firmware;
3174 }
3175
3176 /* Disable interrupts */
a66098da 3177 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
a66098da
LB		 3178 free_irq(priv->pdev->irq, hw);
3179
3180 rc = ieee80211_register_hw(hw);
3181 if (rc) {
3182 printk(KERN_ERR "%s: Cannot register device\n", priv->name);
3183 goto err_stop_firmware;
3184 }
3185
3186 fw = (u8 *)&priv->fw_rev;
3187 printk(KERN_INFO "%s: 88W%u %s\n", priv->name, priv->part_num,
3188 MWL8K_DESC);
3189 printk(KERN_INFO "%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n",
3190 priv->name, MWL8K_VERSION, fw[3], fw[2], fw[1], fw[0]);
e91d8334
JB		 3191 printk(KERN_INFO "%s: MAC Address: %pM\n", priv->name,
3192 hw->wiphy->perm_addr);
a66098da
LB		 3193
3194 return 0;
3195
3196err_stop_firmware:
3197 mwl8k_hw_reset(priv);
3198 mwl8k_release_firmware(priv);
3199
3200err_free_irq:
a66098da 3201 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
a66098da
LB		 3202 free_irq(priv->pdev->irq, hw);
3203
3204err_free_queues:
3205 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3206 mwl8k_txq_deinit(hw, i);
3207 mwl8k_rxq_deinit(hw, 0);
3208
3209err_iounmap:
3210 if (priv->cookie != NULL)
3211 pci_free_consistent(priv->pdev, 4,
3212 priv->cookie, priv->cookie_dma);
3213
3214 if (priv->regs != NULL)
3215 pci_iounmap(pdev, priv->regs);
3216
3217 if (priv->config_wq != NULL)
3218 destroy_workqueue(priv->config_wq);
3219
3220 pci_set_drvdata(pdev, NULL);
3221 ieee80211_free_hw(hw);
3222
3223err_free_reg:
3224 pci_release_regions(pdev);
3225 pci_disable_device(pdev);
3226
3227 return rc;
3228}
3229
230f7af0 3230static void __devexit mwl8k_shutdown(struct pci_dev *pdev)
a66098da
LB		 3231{
3232 printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__);
3233}
3234
230f7af0 3235static void __devexit mwl8k_remove(struct pci_dev *pdev)
a66098da
LB		 3236{
3237 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
3238 struct mwl8k_priv *priv;
3239 int i;
3240
3241 if (hw == NULL)
3242 return;
3243 priv = hw->priv;
3244
3245 ieee80211_stop_queues(hw);
3246
60aa569f
LB		 3247 ieee80211_unregister_hw(hw);
3248
a66098da
LB		 3249 /* Remove tx reclaim tasklet */
3250 tasklet_kill(&priv->tx_reclaim_task);
3251
3252 /* Stop config thread */
3253 destroy_workqueue(priv->config_wq);
3254
3255 /* Stop hardware */
3256 mwl8k_hw_reset(priv);
3257
3258 /* Return all skbs to mac80211 */
3259 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3260 mwl8k_txq_reclaim(hw, i, 1);
3261
a66098da
LB		 3262 for (i = 0; i < MWL8K_TX_QUEUES; i++)
3263 mwl8k_txq_deinit(hw, i);
3264
3265 mwl8k_rxq_deinit(hw, 0);
3266
3267 pci_free_consistent(priv->pdev, 4,
3268 priv->cookie, priv->cookie_dma);
3269
3270 pci_iounmap(pdev, priv->regs);
3271 pci_set_drvdata(pdev, NULL);
3272 ieee80211_free_hw(hw);
3273 pci_release_regions(pdev);
3274 pci_disable_device(pdev);
3275}
3276
3277static struct pci_driver mwl8k_driver = {
3278 .name = MWL8K_NAME,
3279 .id_table = mwl8k_table,
3280 .probe = mwl8k_probe,
3281 .remove = __devexit_p(mwl8k_remove),
3282 .shutdown = __devexit_p(mwl8k_shutdown),
3283};
3284
3285static int __init mwl8k_init(void)
3286{
3287 return pci_register_driver(&mwl8k_driver);
3288}
3289
3290static void __exit mwl8k_exit(void)
3291{
3292 pci_unregister_driver(&mwl8k_driver);
3293}
3294
3295module_init(mwl8k_init);
3296module_exit(mwl8k_exit);
kernel source for telekom puls (alcatel/mediatek)