2 * drivers/net/wireless/mwl8k.c driver for Marvell TOPDOG 802.11 Wireless cards
4 * Copyright (C) 2008 Marvell Semiconductor Inc.
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2. This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
11 #include <linux/init.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/spinlock.h>
15 #include <linux/list.h>
16 #include <linux/pci.h>
17 #include <linux/delay.h>
18 #include <linux/completion.h>
19 #include <linux/etherdevice.h>
20 #include <net/mac80211.h>
21 #include <linux/moduleparam.h>
22 #include <linux/firmware.h>
23 #include <linux/workqueue.h>
25 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
26 #define MWL8K_NAME KBUILD_MODNAME
27 #define MWL8K_VERSION "0.9.1"
29 MODULE_DESCRIPTION(MWL8K_DESC
);
30 MODULE_VERSION(MWL8K_VERSION
);
31 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
32 MODULE_LICENSE("GPL");
34 static DEFINE_PCI_DEVICE_TABLE(mwl8k_table
) = {
35 { PCI_VDEVICE(MARVELL
, 0x2a2b), .driver_data
= 8687, },
36 { PCI_VDEVICE(MARVELL
, 0x2a30), .driver_data
= 8687, },
39 MODULE_DEVICE_TABLE(pci
, mwl8k_table
);
41 #define IEEE80211_ADDR_LEN ETH_ALEN
43 /* Register definitions */
44 #define MWL8K_HIU_GEN_PTR 0x00000c10
45 #define MWL8K_MODE_STA 0x0000005a
46 #define MWL8K_MODE_AP 0x000000a5
47 #define MWL8K_HIU_INT_CODE 0x00000c14
48 #define MWL8K_FWSTA_READY 0xf0f1f2f4
49 #define MWL8K_FWAP_READY 0xf1f2f4a5
50 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
51 #define MWL8K_HIU_SCRATCH 0x00000c40
53 /* Host->device communications */
54 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
55 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
56 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
57 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
58 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
59 #define MWL8K_H2A_INT_DUMMY (1 << 20)
60 #define MWL8K_H2A_INT_RESET (1 << 15)
61 #define MWL8K_H2A_INT_PS (1 << 2)
62 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
63 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
65 /* Device->host communications */
66 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
67 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
68 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
69 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
70 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
71 #define MWL8K_A2H_INT_DUMMY (1 << 20)
72 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
73 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
74 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
75 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
76 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
77 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
78 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
79 #define MWL8K_A2H_INT_RX_READY (1 << 1)
80 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
82 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
83 MWL8K_A2H_INT_CHNL_SWITCHED | \
84 MWL8K_A2H_INT_QUEUE_EMPTY | \
85 MWL8K_A2H_INT_RADAR_DETECT | \
86 MWL8K_A2H_INT_RADIO_ON | \
87 MWL8K_A2H_INT_RADIO_OFF | \
88 MWL8K_A2H_INT_MAC_EVENT | \
89 MWL8K_A2H_INT_OPC_DONE | \
90 MWL8K_A2H_INT_RX_READY | \
91 MWL8K_A2H_INT_TX_DONE)
93 /* WME stream classes */
94 #define WME_AC_BE 0 /* best effort */
95 #define WME_AC_BK 1 /* background */
96 #define WME_AC_VI 2 /* video */
97 #define WME_AC_VO 3 /* voice */
99 #define MWL8K_RX_QUEUES 1
100 #define MWL8K_TX_QUEUES 4
102 struct mwl8k_rx_queue
{
105 /* hw receives here */
108 /* refill descs here */
111 struct mwl8k_rx_desc
*rx_desc_area
;
112 dma_addr_t rx_desc_dma
;
113 struct sk_buff
**rx_skb
;
118 * The DMA engine requires a modification to the payload.
119 * If the skbuff is shared/cloned, it needs to be unshared.
120 * This method is used to ensure the stack always gets back
121 * the skbuff it sent for transmission.
123 struct sk_buff
*clone
;
127 struct mwl8k_tx_queue
{
128 /* hw transmits here */
131 /* sw appends here */
134 struct ieee80211_tx_queue_stats tx_stats
;
135 struct mwl8k_tx_desc
*tx_desc_area
;
136 dma_addr_t tx_desc_dma
;
137 struct mwl8k_skb
*tx_skb
;
140 /* Pointers to the firmware data and meta information about it. */
141 struct mwl8k_firmware
{
143 struct firmware
*ucode
;
145 /* Boot helper code */
146 struct firmware
*helper
;
151 struct ieee80211_hw
*hw
;
153 struct pci_dev
*pdev
;
155 /* firmware access lock */
158 /* firmware files and meta data */
159 struct mwl8k_firmware fw
;
162 /* lock held over TX and TX reap */
166 struct ieee80211_vif
*vif
;
167 struct list_head vif_list
;
169 struct ieee80211_channel
*current_channel
;
171 /* power management status cookie from firmware */
173 dma_addr_t cookie_dma
;
182 * Running count of TX packets in flight, to avoid
183 * iterating over the transmit rings each time.
187 struct mwl8k_rx_queue rxq
[MWL8K_RX_QUEUES
];
188 struct mwl8k_tx_queue txq
[MWL8K_TX_QUEUES
];
191 struct ieee80211_supported_band band
;
192 struct ieee80211_channel channels
[14];
193 struct ieee80211_rate rates
[12];
195 /* RF preamble: Short, Long or Auto */
199 /* WMM MODE 1 for enabled; 0 for disabled */
202 /* Set if PHY config is in progress */
205 /* XXX need to convert this to handle multiple interfaces */
207 u8 capture_bssid
[IEEE80211_ADDR_LEN
];
208 struct sk_buff
*beacon_skb
;
211 * This FJ worker has to be global as it is scheduled from the
212 * RX handler. At this point we don't know which interface it
213 * belongs to until the list of bssids waiting to complete join
216 struct work_struct finalize_join_worker
;
218 /* Tasklet to reclaim TX descriptors and buffers after tx */
219 struct tasklet_struct tx_reclaim_task
;
221 /* Work thread to serialize configuration requests */
222 struct workqueue_struct
*config_wq
;
223 struct completion
*hostcmd_wait
;
224 struct completion
*tx_wait
;
227 /* Per interface specific private data */
229 struct list_head node
;
231 /* backpointer to parent config block */
232 struct mwl8k_priv
*priv
;
234 /* BSS config of AP or IBSS from mac80211*/
235 struct ieee80211_bss_conf bss_info
;
237 /* BSSID of AP or IBSS */
238 u8 bssid
[IEEE80211_ADDR_LEN
];
239 u8 mac_addr
[IEEE80211_ADDR_LEN
];
242 * Subset of supported legacy rates.
243 * Intersection of AP and STA supported rates.
245 struct ieee80211_rate legacy_rates
[12];
247 /* number of supported legacy rates */
250 /* Number of supported MCS rates. Work in progress */
253 /* Index into station database.Returned by update_sta_db call */
256 /* Non AMPDU sequence number assigned by driver */
259 /* Note:There is no channel info,
260 * refer to the master channel info in priv
264 #define MWL8K_VIF(_vif) (struct mwl8k_vif *)(&((_vif)->drv_priv))
266 static const struct ieee80211_channel mwl8k_channels
[] = {
267 { .center_freq
= 2412, .hw_value
= 1, },
268 { .center_freq
= 2417, .hw_value
= 2, },
269 { .center_freq
= 2422, .hw_value
= 3, },
270 { .center_freq
= 2427, .hw_value
= 4, },
271 { .center_freq
= 2432, .hw_value
= 5, },
272 { .center_freq
= 2437, .hw_value
= 6, },
273 { .center_freq
= 2442, .hw_value
= 7, },
274 { .center_freq
= 2447, .hw_value
= 8, },
275 { .center_freq
= 2452, .hw_value
= 9, },
276 { .center_freq
= 2457, .hw_value
= 10, },
277 { .center_freq
= 2462, .hw_value
= 11, },
280 static const struct ieee80211_rate mwl8k_rates
[] = {
281 { .bitrate
= 10, .hw_value
= 2, },
282 { .bitrate
= 20, .hw_value
= 4, },
283 { .bitrate
= 55, .hw_value
= 11, },
284 { .bitrate
= 60, .hw_value
= 12, },
285 { .bitrate
= 90, .hw_value
= 18, },
286 { .bitrate
= 110, .hw_value
= 22, },
287 { .bitrate
= 120, .hw_value
= 24, },
288 { .bitrate
= 180, .hw_value
= 36, },
289 { .bitrate
= 240, .hw_value
= 48, },
290 { .bitrate
= 360, .hw_value
= 72, },
291 { .bitrate
= 480, .hw_value
= 96, },
292 { .bitrate
= 540, .hw_value
= 108, },
296 #define MWL8K_RADIO_FORCE 0x2
297 #define MWL8K_RADIO_ENABLE 0x1
298 #define MWL8K_RADIO_DISABLE 0x0
299 #define MWL8K_RADIO_AUTO_PREAMBLE 0x0005
300 #define MWL8K_RADIO_SHORT_PREAMBLE 0x0003
301 #define MWL8K_RADIO_LONG_PREAMBLE 0x0001
304 #define MWL8K_WMM_ENABLE 1
305 #define MWL8K_WMM_DISABLE 0
307 #define MWL8K_RADIO_DEFAULT_PREAMBLE MWL8K_RADIO_LONG_PREAMBLE
311 /* Short Slot: 9us slot time */
312 #define MWL8K_SHORT_SLOTTIME 1
314 /* Long slot: 20us slot time */
315 #define MWL8K_LONG_SLOTTIME 0
317 /* Set or get info from Firmware */
318 #define MWL8K_CMD_SET 0x0001
319 #define MWL8K_CMD_GET 0x0000
321 /* Firmware command codes */
322 #define MWL8K_CMD_CODE_DNLD 0x0001
323 #define MWL8K_CMD_GET_HW_SPEC 0x0003
324 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
325 #define MWL8K_CMD_GET_STAT 0x0014
326 #define MWL8K_CMD_RADIO_CONTROL 0x001C
327 #define MWL8K_CMD_RF_TX_POWER 0x001E
328 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
329 #define MWL8K_CMD_SET_POST_SCAN 0x0108
330 #define MWL8K_CMD_SET_RF_CHANNEL 0x010A
331 #define MWL8K_CMD_SET_SLOT 0x0114
332 #define MWL8K_CMD_MIMO_CONFIG 0x0125
333 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
334 #define MWL8K_CMD_SET_WMM_MODE 0x0123
335 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
336 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
337 #define MWL8K_CMD_UPDATE_STADB 0x1123
338 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
339 #define MWL8K_CMD_SET_LINKADAPT_MODE 0x0129
340 #define MWL8K_CMD_SET_AID 0x010d
341 #define MWL8K_CMD_SET_RATE 0x0110
342 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
343 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
344 #define MWL8K_CMD_ENCRYPTION 0x1122
346 static const char *mwl8k_cmd_name(u16 cmd
, char *buf
, int bufsize
)
348 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
349 snprintf(buf, bufsize, "%s", #x);\
352 switch (cmd
& (~0x8000)) {
353 MWL8K_CMDNAME(CODE_DNLD
);
354 MWL8K_CMDNAME(GET_HW_SPEC
);
355 MWL8K_CMDNAME(MAC_MULTICAST_ADR
);
356 MWL8K_CMDNAME(GET_STAT
);
357 MWL8K_CMDNAME(RADIO_CONTROL
);
358 MWL8K_CMDNAME(RF_TX_POWER
);
359 MWL8K_CMDNAME(SET_PRE_SCAN
);
360 MWL8K_CMDNAME(SET_POST_SCAN
);
361 MWL8K_CMDNAME(SET_RF_CHANNEL
);
362 MWL8K_CMDNAME(SET_SLOT
);
363 MWL8K_CMDNAME(MIMO_CONFIG
);
364 MWL8K_CMDNAME(ENABLE_SNIFFER
);
365 MWL8K_CMDNAME(SET_WMM_MODE
);
366 MWL8K_CMDNAME(SET_EDCA_PARAMS
);
367 MWL8K_CMDNAME(SET_FINALIZE_JOIN
);
368 MWL8K_CMDNAME(UPDATE_STADB
);
369 MWL8K_CMDNAME(SET_RATEADAPT_MODE
);
370 MWL8K_CMDNAME(SET_LINKADAPT_MODE
);
371 MWL8K_CMDNAME(SET_AID
);
372 MWL8K_CMDNAME(SET_RATE
);
373 MWL8K_CMDNAME(USE_FIXED_RATE
);
374 MWL8K_CMDNAME(RTS_THRESHOLD
);
375 MWL8K_CMDNAME(ENCRYPTION
);
377 snprintf(buf
, bufsize
, "0x%x", cmd
);
384 /* Hardware and firmware reset */
385 static void mwl8k_hw_reset(struct mwl8k_priv
*priv
)
387 iowrite32(MWL8K_H2A_INT_RESET
,
388 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
389 iowrite32(MWL8K_H2A_INT_RESET
,
390 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
394 /* Release fw image */
395 static void mwl8k_release_fw(struct firmware
**fw
)
399 release_firmware(*fw
);
403 static void mwl8k_release_firmware(struct mwl8k_priv
*priv
)
405 mwl8k_release_fw(&priv
->fw
.ucode
);
406 mwl8k_release_fw(&priv
->fw
.helper
);
409 /* Request fw image */
410 static int mwl8k_request_fw(struct mwl8k_priv
*priv
,
411 const char *fname
, struct firmware
**fw
)
413 /* release current image */
415 mwl8k_release_fw(fw
);
417 return request_firmware((const struct firmware
**)fw
,
418 fname
, &priv
->pdev
->dev
);
421 static int mwl8k_request_firmware(struct mwl8k_priv
*priv
, u32 part_num
)
426 priv
->part_num
= part_num
;
428 snprintf(filename
, sizeof(filename
),
429 "mwl8k/helper_%u.fw", priv
->part_num
);
431 rc
= mwl8k_request_fw(priv
, filename
, &priv
->fw
.helper
);
434 "%s Error requesting helper firmware file %s\n",
435 pci_name(priv
->pdev
), filename
);
439 snprintf(filename
, sizeof(filename
),
440 "mwl8k/fmimage_%u.fw", priv
->part_num
);
442 rc
= mwl8k_request_fw(priv
, filename
, &priv
->fw
.ucode
);
444 printk(KERN_ERR
"%s Error requesting firmware file %s\n",
445 pci_name(priv
->pdev
), filename
);
446 mwl8k_release_fw(&priv
->fw
.helper
);
453 struct mwl8k_cmd_pkt
{
459 } __attribute__((packed
));
465 mwl8k_send_fw_load_cmd(struct mwl8k_priv
*priv
, void *data
, int length
)
467 void __iomem
*regs
= priv
->regs
;
472 dma_addr
= pci_map_single(priv
->pdev
, data
, length
, PCI_DMA_TODEVICE
);
473 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
476 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
477 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
478 iowrite32(MWL8K_H2A_INT_DOORBELL
,
479 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
480 iowrite32(MWL8K_H2A_INT_DUMMY
,
481 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
488 int_code
= ioread32(regs
+ MWL8K_HIU_INT_CODE
);
489 if (int_code
== MWL8K_INT_CODE_CMD_FINISHED
) {
490 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
498 pci_unmap_single(priv
->pdev
, dma_addr
, length
, PCI_DMA_TODEVICE
);
501 * Clear 'command done' interrupt bit.
507 status
= ioread32(priv
->regs
+
508 MWL8K_HIU_A2H_INTERRUPT_STATUS
);
509 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
510 iowrite32(~MWL8K_A2H_INT_OPC_DONE
,
511 priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
512 ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
522 static int mwl8k_load_fw_image(struct mwl8k_priv
*priv
,
523 const u8
*data
, size_t length
)
525 struct mwl8k_cmd_pkt
*cmd
;
529 cmd
= kmalloc(sizeof(*cmd
) + 256, GFP_KERNEL
);
533 cmd
->code
= cpu_to_le16(MWL8K_CMD_CODE_DNLD
);
539 int block_size
= length
> 256 ? 256 : length
;
541 memcpy(cmd
->payload
, data
+ done
, block_size
);
542 cmd
->length
= cpu_to_le16(block_size
);
544 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
,
545 sizeof(*cmd
) + block_size
);
550 length
-= block_size
;
555 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
, sizeof(*cmd
));
563 static int mwl8k_feed_fw_image(struct mwl8k_priv
*priv
,
564 const u8
*data
, size_t length
)
566 unsigned char *buffer
;
567 int may_continue
, rc
= 0;
568 u32 done
, prev_block_size
;
570 buffer
= kmalloc(1024, GFP_KERNEL
);
577 while (may_continue
> 0) {
580 block_size
= ioread32(priv
->regs
+ MWL8K_HIU_SCRATCH
);
581 if (block_size
& 1) {
585 done
+= prev_block_size
;
586 length
-= prev_block_size
;
589 if (block_size
> 1024 || block_size
> length
) {
599 if (block_size
== 0) {
606 prev_block_size
= block_size
;
607 memcpy(buffer
, data
+ done
, block_size
);
609 rc
= mwl8k_send_fw_load_cmd(priv
, buffer
, block_size
);
614 if (!rc
&& length
!= 0)
622 static int mwl8k_load_firmware(struct mwl8k_priv
*priv
)
626 const u8
*ucode
= priv
->fw
.ucode
->data
;
627 size_t ucode_len
= priv
->fw
.ucode
->size
;
628 const u8
*helper
= priv
->fw
.helper
->data
;
629 size_t helper_len
= priv
->fw
.helper
->size
;
631 if (!memcmp(ucode
, "\x01\x00\x00\x00", 4)) {
632 rc
= mwl8k_load_fw_image(priv
, helper
, helper_len
);
634 printk(KERN_ERR
"%s: unable to load firmware "
635 "helper image\n", pci_name(priv
->pdev
));
640 rc
= mwl8k_feed_fw_image(priv
, ucode
, ucode_len
);
642 rc
= mwl8k_load_fw_image(priv
, ucode
, ucode_len
);
646 printk(KERN_ERR
"%s: unable to load firmware data\n",
647 pci_name(priv
->pdev
));
651 iowrite32(MWL8K_MODE_STA
, priv
->regs
+ MWL8K_HIU_GEN_PTR
);
656 if (ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
)
657 == MWL8K_FWSTA_READY
)
662 return loops
? 0 : -ETIMEDOUT
;
667 * Defines shared between transmission and reception.
669 /* HT control fields for firmware */
674 } __attribute__((packed
));
676 /* Firmware Station database operations */
677 #define MWL8K_STA_DB_ADD_ENTRY 0
678 #define MWL8K_STA_DB_MODIFY_ENTRY 1
679 #define MWL8K_STA_DB_DEL_ENTRY 2
680 #define MWL8K_STA_DB_FLUSH 3
682 /* Peer Entry flags - used to define the type of the peer node */
683 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
684 #define MWL8K_PEER_TYPE_ADHOC_STATION 4
686 #define MWL8K_IEEE_LEGACY_DATA_RATES 12
687 #define MWL8K_MCS_BITMAP_SIZE 16
690 struct peer_capability_info
{
691 /* Peer type - AP vs. STA. */
694 /* Basic 802.11 capabilities from assoc resp. */
697 /* Set if peer supports 802.11n high throughput (HT). */
700 /* Valid if HT is supported. */
702 __u8 extended_ht_caps
;
703 struct ewc_ht_info ewc_info
;
705 /* Legacy rate table. Intersection of our rates and peer rates. */
706 __u8 legacy_rates
[MWL8K_IEEE_LEGACY_DATA_RATES
];
708 /* HT rate table. Intersection of our rates and peer rates. */
709 __u8 ht_rates
[MWL8K_MCS_BITMAP_SIZE
];
712 /* If set, interoperability mode, no proprietary extensions. */
716 __le16 amsdu_enabled
;
717 } __attribute__((packed
));
719 /* Inline functions to manipulate QoS field in data descriptor. */
720 static inline u16
mwl8k_qos_setbit_tid(u16 qos
, u8 tid
)
722 u16 val_mask
= 0x000f;
723 u16 qos_mask
= ~val_mask
;
726 return (qos
& qos_mask
) | (tid
& val_mask
);
729 static inline u16
mwl8k_qos_setbit_eosp(u16 qos
)
731 u16 val_mask
= 1 << 4;
733 /* End of Service Period Bit 4 */
734 return qos
| val_mask
;
737 static inline u16
mwl8k_qos_setbit_ack(u16 qos
, u8 ack_policy
)
741 u16 qos_mask
= ~(val_mask
<< shift
);
743 /* Ack Policy Bit 5-6 */
744 return (qos
& qos_mask
) | ((ack_policy
& val_mask
) << shift
);
747 static inline u16
mwl8k_qos_setbit_amsdu(u16 qos
)
749 u16 val_mask
= 1 << 7;
751 /* AMSDU present Bit 7 */
752 return qos
| val_mask
;
755 static inline u16
mwl8k_qos_setbit_qlen(u16 qos
, u8 len
)
759 u16 qos_mask
= ~(val_mask
<< shift
);
761 /* Queue Length Bits 8-15 */
762 return (qos
& qos_mask
) | ((len
& val_mask
) << shift
);
765 /* DMA header used by firmware and hardware. */
766 struct mwl8k_dma_data
{
768 struct ieee80211_hdr wh
;
769 } __attribute__((packed
));
771 /* Routines to add/remove DMA header from skb. */
772 static inline int mwl8k_remove_dma_header(struct sk_buff
*skb
)
774 struct mwl8k_dma_data
*tr
= (struct mwl8k_dma_data
*)(skb
->data
);
775 void *dst
, *src
= &tr
->wh
;
776 __le16 fc
= tr
->wh
.frame_control
;
777 int hdrlen
= ieee80211_hdrlen(fc
);
778 u16 space
= sizeof(struct mwl8k_dma_data
) - hdrlen
;
780 dst
= (void *)tr
+ space
;
782 memmove(dst
, src
, hdrlen
);
783 skb_pull(skb
, space
);
789 static inline struct sk_buff
*mwl8k_add_dma_header(struct sk_buff
*skb
)
791 struct ieee80211_hdr
*wh
;
793 struct mwl8k_dma_data
*tr
;
795 wh
= (struct ieee80211_hdr
*)skb
->data
;
796 hdrlen
= ieee80211_hdrlen(wh
->frame_control
);
800 * Copy up/down the 802.11 header; the firmware requires
801 * we present a 2-byte payload length followed by a
802 * 4-address header (w/o QoS), followed (optionally) by
803 * any WEP/ExtIV header (but only filled in for CCMP).
805 if (hdrlen
!= sizeof(struct mwl8k_dma_data
))
806 skb_push(skb
, sizeof(struct mwl8k_dma_data
) - hdrlen
);
808 tr
= (struct mwl8k_dma_data
*)skb
->data
;
810 memmove(&tr
->wh
, wh
, hdrlen
);
813 memset(tr
->wh
.addr4
, 0, IEEE80211_ADDR_LEN
);
816 * Firmware length is the length of the fully formed "802.11
817 * payload". That is, everything except for the 802.11 header.
818 * This includes all crypto material including the MIC.
820 tr
->fwlen
= cpu_to_le16(pktlen
- hdrlen
);
829 #define MWL8K_RX_CTRL_KEY_INDEX_MASK 0x30
830 #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02
831 #define MWL8K_RX_CTRL_AMPDU 0x01
833 struct mwl8k_rx_desc
{
837 __le32 pkt_phys_addr
;
838 __le32 next_rx_desc_phys_addr
;
848 } __attribute__((packed
));
850 #define MWL8K_RX_DESCS 256
851 #define MWL8K_RX_MAXSZ 3800
853 static int mwl8k_rxq_init(struct ieee80211_hw
*hw
, int index
)
855 struct mwl8k_priv
*priv
= hw
->priv
;
856 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
860 rxq
->rx_desc_count
= 0;
864 size
= MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
);
867 pci_alloc_consistent(priv
->pdev
, size
, &rxq
->rx_desc_dma
);
868 if (rxq
->rx_desc_area
== NULL
) {
869 printk(KERN_ERR
"%s: failed to alloc RX descriptors\n",
873 memset(rxq
->rx_desc_area
, 0, size
);
875 rxq
->rx_skb
= kmalloc(MWL8K_RX_DESCS
*
876 sizeof(*rxq
->rx_skb
), GFP_KERNEL
);
877 if (rxq
->rx_skb
== NULL
) {
878 printk(KERN_ERR
"%s: failed to alloc RX skbuff list\n",
880 pci_free_consistent(priv
->pdev
, size
,
881 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
884 memset(rxq
->rx_skb
, 0, MWL8K_RX_DESCS
* sizeof(*rxq
->rx_skb
));
886 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
887 struct mwl8k_rx_desc
*rx_desc
;
890 rx_desc
= rxq
->rx_desc_area
+ i
;
891 nexti
= (i
+ 1) % MWL8K_RX_DESCS
;
893 rx_desc
->next_rx_desc_phys_addr
=
894 cpu_to_le32(rxq
->rx_desc_dma
895 + nexti
* sizeof(*rx_desc
));
896 rx_desc
->rx_ctrl
= MWL8K_RX_CTRL_OWNED_BY_HOST
;
902 static int rxq_refill(struct ieee80211_hw
*hw
, int index
, int limit
)
904 struct mwl8k_priv
*priv
= hw
->priv
;
905 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
909 while (rxq
->rx_desc_count
< MWL8K_RX_DESCS
&& limit
--) {
913 skb
= dev_alloc_skb(MWL8K_RX_MAXSZ
);
917 rxq
->rx_desc_count
++;
920 rxq
->rx_tail
= (rx
+ 1) % MWL8K_RX_DESCS
;
922 rxq
->rx_desc_area
[rx
].pkt_phys_addr
=
923 cpu_to_le32(pci_map_single(priv
->pdev
, skb
->data
,
924 MWL8K_RX_MAXSZ
, DMA_FROM_DEVICE
));
926 rxq
->rx_desc_area
[rx
].pkt_len
= cpu_to_le16(MWL8K_RX_MAXSZ
);
927 rxq
->rx_skb
[rx
] = skb
;
929 rxq
->rx_desc_area
[rx
].rx_ctrl
= 0;
937 /* Must be called only when the card's reception is completely halted */
938 static void mwl8k_rxq_deinit(struct ieee80211_hw
*hw
, int index
)
940 struct mwl8k_priv
*priv
= hw
->priv
;
941 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
944 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
945 if (rxq
->rx_skb
[i
] != NULL
) {
948 addr
= le32_to_cpu(rxq
->rx_desc_area
[i
].pkt_phys_addr
);
949 pci_unmap_single(priv
->pdev
, addr
, MWL8K_RX_MAXSZ
,
951 kfree_skb(rxq
->rx_skb
[i
]);
952 rxq
->rx_skb
[i
] = NULL
;
959 pci_free_consistent(priv
->pdev
,
960 MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
),
961 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
962 rxq
->rx_desc_area
= NULL
;
967 * Scan a list of BSSIDs to process for finalize join.
968 * Allows for extension to process multiple BSSIDs.
971 mwl8k_capture_bssid(struct mwl8k_priv
*priv
, struct ieee80211_hdr
*wh
)
973 return priv
->capture_beacon
&&
974 ieee80211_is_beacon(wh
->frame_control
) &&
975 !compare_ether_addr(wh
->addr3
, priv
->capture_bssid
);
978 static inline void mwl8k_save_beacon(struct mwl8k_priv
*priv
,
981 priv
->capture_beacon
= false;
982 memset(priv
->capture_bssid
, 0, IEEE80211_ADDR_LEN
);
985 * Use GFP_ATOMIC as rxq_process is called from
986 * the primary interrupt handler, memory allocation call
989 priv
->beacon_skb
= skb_copy(skb
, GFP_ATOMIC
);
990 if (priv
->beacon_skb
!= NULL
)
991 queue_work(priv
->config_wq
,
992 &priv
->finalize_join_worker
);
995 static int rxq_process(struct ieee80211_hw
*hw
, int index
, int limit
)
997 struct mwl8k_priv
*priv
= hw
->priv
;
998 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
1002 while (rxq
->rx_desc_count
&& limit
--) {
1003 struct mwl8k_rx_desc
*rx_desc
;
1004 struct sk_buff
*skb
;
1005 struct ieee80211_rx_status status
;
1007 struct ieee80211_hdr
*wh
;
1009 rx_desc
= rxq
->rx_desc_area
+ rxq
->rx_head
;
1010 if (!(rx_desc
->rx_ctrl
& MWL8K_RX_CTRL_OWNED_BY_HOST
))
1014 skb
= rxq
->rx_skb
[rxq
->rx_head
];
1017 rxq
->rx_skb
[rxq
->rx_head
] = NULL
;
1019 rxq
->rx_head
= (rxq
->rx_head
+ 1) % MWL8K_RX_DESCS
;
1020 rxq
->rx_desc_count
--;
1022 addr
= le32_to_cpu(rx_desc
->pkt_phys_addr
);
1023 pci_unmap_single(priv
->pdev
, addr
,
1024 MWL8K_RX_MAXSZ
, PCI_DMA_FROMDEVICE
);
1026 skb_put(skb
, le16_to_cpu(rx_desc
->pkt_len
));
1027 if (mwl8k_remove_dma_header(skb
)) {
1032 wh
= (struct ieee80211_hdr
*)skb
->data
;
1035 * Check for pending join operation. save a copy of
1036 * the beacon and schedule a tasklet to send finalize
1037 * join command to the firmware.
1039 if (mwl8k_capture_bssid(priv
, wh
))
1040 mwl8k_save_beacon(priv
, skb
);
1042 memset(&status
, 0, sizeof(status
));
1044 status
.signal
= -rx_desc
->rssi
;
1045 status
.noise
= -rx_desc
->noise_level
;
1046 status
.qual
= rx_desc
->link_quality
;
1048 status
.rate_idx
= 1;
1050 status
.band
= IEEE80211_BAND_2GHZ
;
1051 status
.freq
= ieee80211_channel_to_frequency(rx_desc
->channel
);
1052 ieee80211_rx_irqsafe(hw
, skb
, &status
);
1062 * Packet transmission.
1065 /* Transmit queue assignment. */
1067 MWL8K_WME_AC_BK
= 0, /* background access */
1068 MWL8K_WME_AC_BE
= 1, /* best effort access */
1069 MWL8K_WME_AC_VI
= 2, /* video access */
1070 MWL8K_WME_AC_VO
= 3, /* voice access */
1073 /* Transmit packet ACK policy */
1074 #define MWL8K_TXD_ACK_POLICY_NORMAL 0
1075 #define MWL8K_TXD_ACK_POLICY_NONE 1
1076 #define MWL8K_TXD_ACK_POLICY_NO_EXPLICIT 2
1077 #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3
1079 #define GET_TXQ(_ac) (\
1080 ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \
1081 ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \
1082 ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \
1085 #define MWL8K_TXD_STATUS_IDLE 0x00000000
1086 #define MWL8K_TXD_STATUS_USED 0x00000001
1087 #define MWL8K_TXD_STATUS_OK 0x00000001
1088 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1089 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1090 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1091 #define MWL8K_TXD_STATUS_BROADCAST_TX 0x00000010
1092 #define MWL8K_TXD_STATUS_FAILED_LINK_ERROR 0x00000020
1093 #define MWL8K_TXD_STATUS_FAILED_EXCEED_LIMIT 0x00000040
1094 #define MWL8K_TXD_STATUS_FAILED_AGING 0x00000080
1095 #define MWL8K_TXD_STATUS_HOST_CMD 0x40000000
1096 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1097 #define MWL8K_TXD_SOFTSTALE 0x80
1098 #define MWL8K_TXD_SOFTSTALE_MGMT_RETRY 0x01
1100 struct mwl8k_tx_desc
{
1105 __le32 pkt_phys_addr
;
1107 __u8 dest_MAC_addr
[IEEE80211_ADDR_LEN
];
1108 __le32 next_tx_desc_phys_addr
;
1113 } __attribute__((packed
));
1115 #define MWL8K_TX_DESCS 128
1117 static int mwl8k_txq_init(struct ieee80211_hw
*hw
, int index
)
1119 struct mwl8k_priv
*priv
= hw
->priv
;
1120 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1124 memset(&txq
->tx_stats
, 0,
1125 sizeof(struct ieee80211_tx_queue_stats
));
1126 txq
->tx_stats
.limit
= MWL8K_TX_DESCS
;
1130 size
= MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
);
1133 pci_alloc_consistent(priv
->pdev
, size
, &txq
->tx_desc_dma
);
1134 if (txq
->tx_desc_area
== NULL
) {
1135 printk(KERN_ERR
"%s: failed to alloc TX descriptors\n",
1139 memset(txq
->tx_desc_area
, 0, size
);
1141 txq
->tx_skb
= kmalloc(MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
),
1143 if (txq
->tx_skb
== NULL
) {
1144 printk(KERN_ERR
"%s: failed to alloc TX skbuff list\n",
1146 pci_free_consistent(priv
->pdev
, size
,
1147 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1150 memset(txq
->tx_skb
, 0, MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
));
1152 for (i
= 0; i
< MWL8K_TX_DESCS
; i
++) {
1153 struct mwl8k_tx_desc
*tx_desc
;
1156 tx_desc
= txq
->tx_desc_area
+ i
;
1157 nexti
= (i
+ 1) % MWL8K_TX_DESCS
;
1159 tx_desc
->status
= 0;
1160 tx_desc
->next_tx_desc_phys_addr
=
1161 cpu_to_le32(txq
->tx_desc_dma
+
1162 nexti
* sizeof(*tx_desc
));
1168 static inline void mwl8k_tx_start(struct mwl8k_priv
*priv
)
1170 iowrite32(MWL8K_H2A_INT_PPA_READY
,
1171 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1172 iowrite32(MWL8K_H2A_INT_DUMMY
,
1173 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1174 ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
);
1177 static inline int mwl8k_txq_busy(struct mwl8k_priv
*priv
)
1179 return priv
->pending_tx_pkts
;
1182 struct mwl8k_txq_info
{
1191 static int mwl8k_scan_tx_ring(struct mwl8k_priv
*priv
,
1192 struct mwl8k_txq_info txinfo
[],
1195 int count
, desc
, status
;
1196 struct mwl8k_tx_queue
*txq
;
1197 struct mwl8k_tx_desc
*tx_desc
;
1200 memset(txinfo
, 0, num_queues
* sizeof(struct mwl8k_txq_info
));
1201 spin_lock_bh(&priv
->tx_lock
);
1202 for (count
= 0; count
< num_queues
; count
++) {
1203 txq
= priv
->txq
+ count
;
1204 txinfo
[count
].len
= txq
->tx_stats
.len
;
1205 txinfo
[count
].head
= txq
->tx_head
;
1206 txinfo
[count
].tail
= txq
->tx_tail
;
1207 for (desc
= 0; desc
< MWL8K_TX_DESCS
; desc
++) {
1208 tx_desc
= txq
->tx_desc_area
+ desc
;
1209 status
= le32_to_cpu(tx_desc
->status
);
1211 if (status
& MWL8K_TXD_STATUS_FW_OWNED
)
1212 txinfo
[count
].fw_owned
++;
1214 txinfo
[count
].drv_owned
++;
1216 if (tx_desc
->pkt_len
== 0)
1217 txinfo
[count
].unused
++;
1220 spin_unlock_bh(&priv
->tx_lock
);
1225 static int mwl8k_tx_wait_empty(struct ieee80211_hw
*hw
, u32 delay_ms
)
1228 unsigned long timeout
= 0;
1229 struct mwl8k_priv
*priv
= hw
->priv
;
1230 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1234 if (priv
->tx_wait
!= NULL
)
1235 printk(KERN_ERR
"WARNING Previous TXWaitEmpty instance\n");
1237 spin_lock_bh(&priv
->tx_lock
);
1238 count
= mwl8k_txq_busy(priv
);
1240 priv
->tx_wait
= &cmd_wait
;
1241 if (priv
->radio_state
)
1242 mwl8k_tx_start(priv
);
1244 spin_unlock_bh(&priv
->tx_lock
);
1247 struct mwl8k_txq_info txinfo
[4];
1251 timeout
= wait_for_completion_timeout(&cmd_wait
,
1252 msecs_to_jiffies(delay_ms
));
1256 spin_lock_bh(&priv
->tx_lock
);
1257 priv
->tx_wait
= NULL
;
1258 newcount
= mwl8k_txq_busy(priv
);
1259 spin_unlock_bh(&priv
->tx_lock
);
1261 printk(KERN_ERR
"%s(%u) TIMEDOUT:%ums Pend:%u-->%u\n",
1262 __func__
, __LINE__
, delay_ms
, count
, newcount
);
1264 mwl8k_scan_tx_ring(priv
, txinfo
, 4);
1265 for (index
= 0 ; index
< 4; index
++)
1267 "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n",
1272 txinfo
[index
].fw_owned
,
1273 txinfo
[index
].drv_owned
,
1274 txinfo
[index
].unused
);
1281 #define MWL8K_TXD_OK (MWL8K_TXD_STATUS_OK | \
1282 MWL8K_TXD_STATUS_OK_RETRY | \
1283 MWL8K_TXD_STATUS_OK_MORE_RETRY)
1284 #define MWL8K_TXD_SUCCESS(stat) ((stat) & MWL8K_TXD_OK)
1285 #define MWL8K_TXD_FAIL_RETRY(stat) \
1286 ((stat) & (MWL8K_TXD_STATUS_FAILED_EXCEED_LIMIT))
1288 static void mwl8k_txq_reclaim(struct ieee80211_hw
*hw
, int index
, int force
)
1290 struct mwl8k_priv
*priv
= hw
->priv
;
1291 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1294 while (txq
->tx_stats
.len
> 0) {
1297 struct mwl8k_tx_desc
*tx_desc
;
1300 struct sk_buff
*skb
;
1301 struct ieee80211_tx_info
*info
;
1306 tx_desc
= txq
->tx_desc_area
+ tx
;
1308 status
= le32_to_cpu(tx_desc
->status
);
1310 if (status
& MWL8K_TXD_STATUS_FW_OWNED
) {
1314 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED
);
1317 txq
->tx_head
= (tx
+ 1) % MWL8K_TX_DESCS
;
1318 BUG_ON(txq
->tx_stats
.len
== 0);
1319 txq
->tx_stats
.len
--;
1320 priv
->pending_tx_pkts
--;
1322 addr
= le32_to_cpu(tx_desc
->pkt_phys_addr
);
1323 size
= (u32
)(le16_to_cpu(tx_desc
->pkt_len
));
1324 skb
= txq
->tx_skb
[tx
].skb
;
1325 txq
->tx_skb
[tx
].skb
= NULL
;
1327 BUG_ON(skb
== NULL
);
1328 pci_unmap_single(priv
->pdev
, addr
, size
, PCI_DMA_TODEVICE
);
1330 rc
= mwl8k_remove_dma_header(skb
);
1332 /* Mark descriptor as unused */
1333 tx_desc
->pkt_phys_addr
= 0;
1334 tx_desc
->pkt_len
= 0;
1336 if (txq
->tx_skb
[tx
].clone
) {
1337 /* Replace with original skb
1338 * before returning to stack
1339 * as buffer has been cloned
1342 skb
= txq
->tx_skb
[tx
].clone
;
1343 txq
->tx_skb
[tx
].clone
= NULL
;
1347 /* Something has gone wrong here.
1348 * Failed to remove DMA header.
1349 * Print error message and drop packet.
1351 printk(KERN_ERR
"%s: Error removing DMA header from "
1352 "tx skb 0x%p.\n", priv
->name
, skb
);
1358 info
= IEEE80211_SKB_CB(skb
);
1359 ieee80211_tx_info_clear_status(info
);
1361 /* Convert firmware status stuff into tx_status */
1362 if (MWL8K_TXD_SUCCESS(status
)) {
1364 info
->flags
|= IEEE80211_TX_STAT_ACK
;
1367 ieee80211_tx_status_irqsafe(hw
, skb
);
1369 wake
= !priv
->inconfig
&& priv
->radio_state
;
1373 ieee80211_wake_queue(hw
, index
);
1376 /* must be called only when the card's transmit is completely halted */
1377 static void mwl8k_txq_deinit(struct ieee80211_hw
*hw
, int index
)
1379 struct mwl8k_priv
*priv
= hw
->priv
;
1380 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1382 mwl8k_txq_reclaim(hw
, index
, 1);
1387 pci_free_consistent(priv
->pdev
,
1388 MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
),
1389 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1390 txq
->tx_desc_area
= NULL
;
1394 mwl8k_txq_xmit(struct ieee80211_hw
*hw
, int index
, struct sk_buff
*skb
)
1396 struct mwl8k_priv
*priv
= hw
->priv
;
1397 struct ieee80211_tx_info
*tx_info
;
1398 struct ieee80211_hdr
*wh
;
1399 struct mwl8k_tx_queue
*txq
;
1400 struct mwl8k_tx_desc
*tx
;
1401 struct mwl8k_dma_data
*tr
;
1402 struct mwl8k_vif
*mwl8k_vif
;
1403 struct sk_buff
*org_skb
= skb
;
1406 bool qosframe
= false, ampduframe
= false;
1407 bool mcframe
= false, eapolframe
= false;
1408 bool amsduframe
= false;
1411 txq
= priv
->txq
+ index
;
1412 tx
= txq
->tx_desc_area
+ txq
->tx_tail
;
1414 BUG_ON(txq
->tx_skb
[txq
->tx_tail
].skb
!= NULL
);
1417 * Append HW DMA header to start of packet. Drop packet if
1418 * there is not enough space or a failure to unshare/unclone
1421 skb
= mwl8k_add_dma_header(skb
);
1424 printk(KERN_DEBUG
"%s: failed to prepend HW DMA "
1425 "header, dropping TX frame.\n", priv
->name
);
1426 dev_kfree_skb(org_skb
);
1427 return NETDEV_TX_OK
;
1430 tx_info
= IEEE80211_SKB_CB(skb
);
1431 mwl8k_vif
= MWL8K_VIF(tx_info
->control
.vif
);
1432 tr
= (struct mwl8k_dma_data
*)skb
->data
;
1434 fc
= wh
->frame_control
;
1435 qosframe
= ieee80211_is_data_qos(fc
);
1436 mcframe
= is_multicast_ether_addr(wh
->addr1
);
1437 ampduframe
= !!(tx_info
->flags
& IEEE80211_TX_CTL_AMPDU
);
1439 if (tx_info
->flags
& IEEE80211_TX_CTL_ASSIGN_SEQ
) {
1440 u16 seqno
= mwl8k_vif
->seqno
;
1441 wh
->seq_ctrl
&= cpu_to_le16(IEEE80211_SCTL_FRAG
);
1442 wh
->seq_ctrl
|= cpu_to_le16(seqno
<< 4);
1443 mwl8k_vif
->seqno
= seqno
++ % 4096;
1447 qos
= le16_to_cpu(*((__le16
*)ieee80211_get_qos_ctl(wh
)));
1449 dma
= pci_map_single(priv
->pdev
, skb
->data
,
1450 skb
->len
, PCI_DMA_TODEVICE
);
1452 if (pci_dma_mapping_error(priv
->pdev
, dma
)) {
1453 printk(KERN_DEBUG
"%s: failed to dma map skb, "
1454 "dropping TX frame.\n", priv
->name
);
1456 if (org_skb
!= NULL
)
1457 dev_kfree_skb(org_skb
);
1460 return NETDEV_TX_OK
;
1463 /* Set desc header, cpu bit order. */
1466 tx
->tx_priority
= index
;
1467 tx
->qos_control
= 0;
1469 tx
->peer_id
= mwl8k_vif
->peer_id
;
1471 amsduframe
= !!(qos
& IEEE80211_QOS_CONTROL_A_MSDU_PRESENT
);
1473 /* Setup firmware control bit fields for each frame type. */
1474 if (ieee80211_is_mgmt(fc
) || ieee80211_is_ctl(fc
)) {
1476 qos
= mwl8k_qos_setbit_eosp(qos
);
1477 /* Set Queue size to unspecified */
1478 qos
= mwl8k_qos_setbit_qlen(qos
, 0xff);
1479 } else if (ieee80211_is_data(fc
)) {
1482 tx
->status
|= MWL8K_TXD_STATUS_MULTICAST_TX
;
1485 * Tell firmware to not send EAPOL pkts in an
1486 * aggregate. Verify against mac80211 tx path. If
1487 * stack turns off AMPDU for an EAPOL frame this
1488 * check will be removed.
1491 qos
= mwl8k_qos_setbit_ack(qos
,
1492 MWL8K_TXD_ACK_POLICY_NORMAL
);
1494 /* Send pkt in an aggregate if AMPDU frame. */
1496 qos
= mwl8k_qos_setbit_ack(qos
,
1497 MWL8K_TXD_ACK_POLICY_BLOCKACK
);
1499 qos
= mwl8k_qos_setbit_ack(qos
,
1500 MWL8K_TXD_ACK_POLICY_NORMAL
);
1503 qos
= mwl8k_qos_setbit_amsdu(qos
);
1507 /* Convert to little endian */
1508 tx
->qos_control
= cpu_to_le16(qos
);
1509 tx
->status
= cpu_to_le32(tx
->status
);
1510 tx
->pkt_phys_addr
= cpu_to_le32(dma
);
1511 tx
->pkt_len
= cpu_to_le16(skb
->len
);
1513 txq
->tx_skb
[txq
->tx_tail
].skb
= skb
;
1514 txq
->tx_skb
[txq
->tx_tail
].clone
=
1515 skb
== org_skb
? NULL
: org_skb
;
1517 spin_lock_bh(&priv
->tx_lock
);
1519 tx
->status
= cpu_to_le32(MWL8K_TXD_STATUS_OK
|
1520 MWL8K_TXD_STATUS_FW_OWNED
);
1522 txq
->tx_stats
.len
++;
1523 priv
->pending_tx_pkts
++;
1524 txq
->tx_stats
.count
++;
1527 if (txq
->tx_tail
== MWL8K_TX_DESCS
)
1529 if (txq
->tx_head
== txq
->tx_tail
)
1530 ieee80211_stop_queue(hw
, index
);
1532 if (priv
->inconfig
) {
1534 * Silently queue packet when we are in the middle of
1535 * a config cycle. Notify firmware only if we are
1536 * waiting for TXQs to empty. If a packet is sent
1537 * before .config() is complete, perhaps it is better
1538 * to drop the packet, as the channel is being changed
1539 * and the packet will end up on the wrong channel.
1541 printk(KERN_ERR
"%s(): WARNING TX activity while "
1542 "in config\n", __func__
);
1544 if (priv
->tx_wait
!= NULL
)
1545 mwl8k_tx_start(priv
);
1547 mwl8k_tx_start(priv
);
1549 spin_unlock_bh(&priv
->tx_lock
);
1551 return NETDEV_TX_OK
;
1556 * Command processing.
1559 /* Timeout firmware commands after 2000ms */
1560 #define MWL8K_CMD_TIMEOUT_MS 2000
1562 static int mwl8k_post_cmd(struct ieee80211_hw
*hw
, struct mwl8k_cmd_pkt
*cmd
)
1564 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1565 struct mwl8k_priv
*priv
= hw
->priv
;
1566 void __iomem
*regs
= priv
->regs
;
1567 dma_addr_t dma_addr
;
1568 unsigned int dma_size
;
1570 u16 __iomem
*result
;
1571 unsigned long timeout
= 0;
1574 cmd
->result
= 0xFFFF;
1575 dma_size
= le16_to_cpu(cmd
->length
);
1576 dma_addr
= pci_map_single(priv
->pdev
, cmd
, dma_size
,
1577 PCI_DMA_BIDIRECTIONAL
);
1578 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
1581 if (priv
->hostcmd_wait
!= NULL
)
1582 printk(KERN_ERR
"WARNING host command in progress\n");
1584 spin_lock_irq(&priv
->fw_lock
);
1585 priv
->hostcmd_wait
= &cmd_wait
;
1586 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
1587 iowrite32(MWL8K_H2A_INT_DOORBELL
,
1588 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1589 iowrite32(MWL8K_H2A_INT_DUMMY
,
1590 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1591 spin_unlock_irq(&priv
->fw_lock
);
1593 timeout
= wait_for_completion_timeout(&cmd_wait
,
1594 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS
));
1596 result
= &cmd
->result
;
1598 spin_lock_irq(&priv
->fw_lock
);
1599 priv
->hostcmd_wait
= NULL
;
1600 spin_unlock_irq(&priv
->fw_lock
);
1601 printk(KERN_ERR
"%s: Command %s timeout after %u ms\n",
1603 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1604 MWL8K_CMD_TIMEOUT_MS
);
1607 rc
= *result
? -EINVAL
: 0;
1609 printk(KERN_ERR
"%s: Command %s error 0x%x\n",
1611 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1615 pci_unmap_single(priv
->pdev
, dma_addr
, dma_size
,
1616 PCI_DMA_BIDIRECTIONAL
);
1623 struct mwl8k_cmd_get_hw_spec
{
1624 struct mwl8k_cmd_pkt header
;
1626 __u8 host_interface
;
1628 __u8 perm_addr
[IEEE80211_ADDR_LEN
];
1633 __u8 mcs_bitmap
[16];
1634 __le32 rx_queue_ptr
;
1635 __le32 num_tx_queues
;
1636 __le32 tx_queue_ptrs
[MWL8K_TX_QUEUES
];
1638 __le32 num_tx_desc_per_queue
;
1639 __le32 total_rx_desc
;
1640 } __attribute__((packed
));
1642 static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw
*hw
)
1644 struct mwl8k_priv
*priv
= hw
->priv
;
1645 struct mwl8k_cmd_get_hw_spec
*cmd
;
1649 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1653 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_HW_SPEC
);
1654 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1656 memset(cmd
->perm_addr
, 0xff, sizeof(cmd
->perm_addr
));
1657 cmd
->ps_cookie
= cpu_to_le32(priv
->cookie_dma
);
1658 cmd
->rx_queue_ptr
= cpu_to_le32(priv
->rxq
[0].rx_desc_dma
);
1659 cmd
->num_tx_queues
= MWL8K_TX_QUEUES
;
1660 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
1661 cmd
->tx_queue_ptrs
[i
] = cpu_to_le32(priv
->txq
[i
].tx_desc_dma
);
1662 cmd
->num_tx_desc_per_queue
= MWL8K_TX_DESCS
;
1663 cmd
->total_rx_desc
= MWL8K_RX_DESCS
;
1665 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1668 SET_IEEE80211_PERM_ADDR(hw
, cmd
->perm_addr
);
1669 priv
->num_mcaddrs
= le16_to_cpu(cmd
->num_mcaddrs
);
1670 priv
->fw_rev
= cmd
->fw_rev
;
1671 priv
->hw_rev
= cmd
->hw_rev
;
1672 priv
->region_code
= le16_to_cpu(cmd
->region_code
);
1680 * CMD_MAC_MULTICAST_ADR.
1682 struct mwl8k_cmd_mac_multicast_adr
{
1683 struct mwl8k_cmd_pkt header
;
1686 __u8 addr
[1][IEEE80211_ADDR_LEN
];
1689 #define MWL8K_ENABLE_RX_MULTICAST 0x000F
1690 static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw
*hw
,
1692 struct dev_addr_list
*mclist
)
1694 struct mwl8k_cmd_mac_multicast_adr
*cmd
;
1697 int size
= sizeof(*cmd
) + ((mc_count
- 1) * IEEE80211_ADDR_LEN
);
1698 cmd
= kzalloc(size
, GFP_KERNEL
);
1702 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR
);
1703 cmd
->header
.length
= cpu_to_le16(size
);
1704 cmd
->action
= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST
);
1705 cmd
->numaddr
= cpu_to_le16(mc_count
);
1706 while ((index
< mc_count
) && mclist
) {
1707 if (mclist
->da_addrlen
!= IEEE80211_ADDR_LEN
) {
1709 goto mwl8k_cmd_mac_multicast_adr_exit
;
1711 memcpy(cmd
->addr
[index
], mclist
->da_addr
, IEEE80211_ADDR_LEN
);
1713 mclist
= mclist
->next
;
1716 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1718 mwl8k_cmd_mac_multicast_adr_exit
:
1724 * CMD_802_11_GET_STAT.
1726 struct mwl8k_cmd_802_11_get_stat
{
1727 struct mwl8k_cmd_pkt header
;
1730 } __attribute__((packed
));
1732 #define MWL8K_STAT_ACK_FAILURE 9
1733 #define MWL8K_STAT_RTS_FAILURE 12
1734 #define MWL8K_STAT_FCS_ERROR 24
1735 #define MWL8K_STAT_RTS_SUCCESS 11
1737 static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw
*hw
,
1738 struct ieee80211_low_level_stats
*stats
)
1740 struct mwl8k_cmd_802_11_get_stat
*cmd
;
1743 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1747 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_STAT
);
1748 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1749 cmd
->action
= cpu_to_le16(MWL8K_CMD_GET
);
1751 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1753 stats
->dot11ACKFailureCount
=
1754 le32_to_cpu(cmd
->stats
[MWL8K_STAT_ACK_FAILURE
]);
1755 stats
->dot11RTSFailureCount
=
1756 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_FAILURE
]);
1757 stats
->dot11FCSErrorCount
=
1758 le32_to_cpu(cmd
->stats
[MWL8K_STAT_FCS_ERROR
]);
1759 stats
->dot11RTSSuccessCount
=
1760 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_SUCCESS
]);
1768 * CMD_802_11_RADIO_CONTROL.
1770 struct mwl8k_cmd_802_11_radio_control
{
1771 struct mwl8k_cmd_pkt header
;
1775 } __attribute__((packed
));
1777 static int mwl8k_cmd_802_11_radio_control(struct ieee80211_hw
*hw
, int enable
)
1779 struct mwl8k_priv
*priv
= hw
->priv
;
1780 struct mwl8k_cmd_802_11_radio_control
*cmd
;
1783 if (((enable
& MWL8K_RADIO_ENABLE
) == priv
->radio_state
) &&
1784 !(enable
& MWL8K_RADIO_FORCE
))
1787 enable
&= MWL8K_RADIO_ENABLE
;
1789 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1793 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RADIO_CONTROL
);
1794 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1795 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1796 cmd
->control
= cpu_to_le16(priv
->radio_preamble
);
1797 cmd
->radio_on
= cpu_to_le16(enable
? 0x0001 : 0x0000);
1799 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1803 priv
->radio_state
= enable
;
1809 mwl8k_set_radio_preamble(struct ieee80211_hw
*hw
, bool short_preamble
)
1811 struct mwl8k_priv
*priv
;
1813 if (hw
== NULL
|| hw
->priv
== NULL
)
1817 priv
->radio_preamble
= (short_preamble
?
1818 MWL8K_RADIO_SHORT_PREAMBLE
:
1819 MWL8K_RADIO_LONG_PREAMBLE
);
1821 return mwl8k_cmd_802_11_radio_control(hw
,
1822 MWL8K_RADIO_ENABLE
| MWL8K_RADIO_FORCE
);
1826 * CMD_802_11_RF_TX_POWER.
1828 #define MWL8K_TX_POWER_LEVEL_TOTAL 8
1830 struct mwl8k_cmd_802_11_rf_tx_power
{
1831 struct mwl8k_cmd_pkt header
;
1833 __le16 support_level
;
1834 __le16 current_level
;
1836 __le16 power_level_list
[MWL8K_TX_POWER_LEVEL_TOTAL
];
1837 } __attribute__((packed
));
1839 static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw
*hw
, int dBm
)
1841 struct mwl8k_cmd_802_11_rf_tx_power
*cmd
;
1844 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1848 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RF_TX_POWER
);
1849 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1850 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1851 cmd
->support_level
= cpu_to_le16(dBm
);
1853 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1862 struct mwl8k_cmd_set_pre_scan
{
1863 struct mwl8k_cmd_pkt header
;
1864 } __attribute__((packed
));
1866 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw
*hw
)
1868 struct mwl8k_cmd_set_pre_scan
*cmd
;
1871 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1875 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN
);
1876 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1878 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1885 * CMD_SET_POST_SCAN.
1887 struct mwl8k_cmd_set_post_scan
{
1888 struct mwl8k_cmd_pkt header
;
1890 __u8 bssid
[IEEE80211_ADDR_LEN
];
1891 } __attribute__((packed
));
1894 mwl8k_cmd_set_post_scan(struct ieee80211_hw
*hw
, __u8 mac
[IEEE80211_ADDR_LEN
])
1896 struct mwl8k_cmd_set_post_scan
*cmd
;
1899 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1903 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_POST_SCAN
);
1904 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1906 memcpy(cmd
->bssid
, mac
, IEEE80211_ADDR_LEN
);
1908 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1915 * CMD_SET_RF_CHANNEL.
1917 struct mwl8k_cmd_set_rf_channel
{
1918 struct mwl8k_cmd_pkt header
;
1920 __u8 current_channel
;
1921 __le32 channel_flags
;
1922 } __attribute__((packed
));
1924 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw
*hw
,
1925 struct ieee80211_channel
*channel
)
1927 struct mwl8k_cmd_set_rf_channel
*cmd
;
1930 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1934 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL
);
1935 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1936 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1937 cmd
->current_channel
= channel
->hw_value
;
1938 if (channel
->band
== IEEE80211_BAND_2GHZ
)
1939 cmd
->channel_flags
= cpu_to_le32(0x00000081);
1941 cmd
->channel_flags
= cpu_to_le32(0x00000000);
1943 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1952 struct mwl8k_cmd_set_slot
{
1953 struct mwl8k_cmd_pkt header
;
1956 } __attribute__((packed
));
1958 static int mwl8k_cmd_set_slot(struct ieee80211_hw
*hw
, int slot_time
)
1960 struct mwl8k_cmd_set_slot
*cmd
;
1963 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1967 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_SLOT
);
1968 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1969 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1970 cmd
->short_slot
= slot_time
== MWL8K_SHORT_SLOTTIME
? 1 : 0;
1972 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1981 struct mwl8k_cmd_mimo_config
{
1982 struct mwl8k_cmd_pkt header
;
1984 __u8 rx_antenna_map
;
1985 __u8 tx_antenna_map
;
1986 } __attribute__((packed
));
1988 static int mwl8k_cmd_mimo_config(struct ieee80211_hw
*hw
, __u8 rx
, __u8 tx
)
1990 struct mwl8k_cmd_mimo_config
*cmd
;
1993 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1997 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MIMO_CONFIG
);
1998 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1999 cmd
->action
= cpu_to_le32((u32
)MWL8K_CMD_SET
);
2000 cmd
->rx_antenna_map
= rx
;
2001 cmd
->tx_antenna_map
= tx
;
2003 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2010 * CMD_ENABLE_SNIFFER.
2012 struct mwl8k_cmd_enable_sniffer
{
2013 struct mwl8k_cmd_pkt header
;
2015 } __attribute__((packed
));
2017 static int mwl8k_enable_sniffer(struct ieee80211_hw
*hw
, bool enable
)
2019 struct mwl8k_cmd_enable_sniffer
*cmd
;
2022 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2026 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER
);
2027 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2028 cmd
->action
= enable
? cpu_to_le32((u32
)MWL8K_CMD_SET
) : 0;
2030 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2037 * CMD_SET_RATE_ADAPT_MODE.
2039 struct mwl8k_cmd_set_rate_adapt_mode
{
2040 struct mwl8k_cmd_pkt header
;
2043 } __attribute__((packed
));
2045 static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw
*hw
, __u16 mode
)
2047 struct mwl8k_cmd_set_rate_adapt_mode
*cmd
;
2050 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2054 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE
);
2055 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2056 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
2057 cmd
->mode
= cpu_to_le16(mode
);
2059 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2068 struct mwl8k_cmd_set_wmm
{
2069 struct mwl8k_cmd_pkt header
;
2071 } __attribute__((packed
));
2073 static int mwl8k_set_wmm(struct ieee80211_hw
*hw
, bool enable
)
2075 struct mwl8k_priv
*priv
= hw
->priv
;
2076 struct mwl8k_cmd_set_wmm
*cmd
;
2079 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2083 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_WMM_MODE
);
2084 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2085 cmd
->action
= enable
? cpu_to_le16(MWL8K_CMD_SET
) : 0;
2087 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2091 priv
->wmm_mode
= enable
;
2097 * CMD_SET_RTS_THRESHOLD.
2099 struct mwl8k_cmd_rts_threshold
{
2100 struct mwl8k_cmd_pkt header
;
2103 } __attribute__((packed
));
2105 static int mwl8k_rts_threshold(struct ieee80211_hw
*hw
,
2106 u16 action
, u16
*threshold
)
2108 struct mwl8k_cmd_rts_threshold
*cmd
;
2111 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2115 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD
);
2116 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2117 cmd
->action
= cpu_to_le16(action
);
2118 cmd
->threshold
= cpu_to_le16(*threshold
);
2120 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2127 * CMD_SET_EDCA_PARAMS.
2129 struct mwl8k_cmd_set_edca_params
{
2130 struct mwl8k_cmd_pkt header
;
2132 /* See MWL8K_SET_EDCA_XXX below */
2135 /* TX opportunity in units of 32 us */
2138 /* Log exponent of max contention period: 0...15*/
2141 /* Log exponent of min contention period: 0...15 */
2144 /* Adaptive interframe spacing in units of 32us */
2147 /* TX queue to configure */
2149 } __attribute__((packed
));
2151 #define MWL8K_GET_EDCA_ALL 0
2152 #define MWL8K_SET_EDCA_CW 0x01
2153 #define MWL8K_SET_EDCA_TXOP 0x02
2154 #define MWL8K_SET_EDCA_AIFS 0x04
2156 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2157 MWL8K_SET_EDCA_TXOP | \
2158 MWL8K_SET_EDCA_AIFS)
2161 mwl8k_set_edca_params(struct ieee80211_hw
*hw
, __u8 qnum
,
2162 __u16 cw_min
, __u16 cw_max
,
2163 __u8 aifs
, __u16 txop
)
2165 struct mwl8k_cmd_set_edca_params
*cmd
;
2166 u32 log_cw_min
, log_cw_max
;
2169 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2173 log_cw_min
= ilog2(cw_min
+1);
2174 log_cw_max
= ilog2(cw_max
+1);
2175 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS
);
2176 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2178 cmd
->action
= cpu_to_le16(MWL8K_SET_EDCA_ALL
);
2179 cmd
->txop
= cpu_to_le16(txop
);
2180 cmd
->log_cw_max
= (u8
)log_cw_max
;
2181 cmd
->log_cw_min
= (u8
)log_cw_min
;
2185 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2192 * CMD_FINALIZE_JOIN.
2195 /* FJ beacon buffer size is compiled into the firmware. */
2196 #define MWL8K_FJ_BEACON_MAXLEN 128
2198 struct mwl8k_cmd_finalize_join
{
2199 struct mwl8k_cmd_pkt header
;
2200 __le32 sleep_interval
; /* Number of beacon periods to sleep */
2201 __u8 beacon_data
[MWL8K_FJ_BEACON_MAXLEN
];
2202 } __attribute__((packed
));
2204 static int mwl8k_finalize_join(struct ieee80211_hw
*hw
, void *frame
,
2205 __u16 framelen
, __u16 dtim
)
2207 struct mwl8k_cmd_finalize_join
*cmd
;
2208 struct ieee80211_mgmt
*payload
= frame
;
2216 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2220 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN
);
2221 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2224 cmd
->sleep_interval
= cpu_to_le32(dtim
);
2226 cmd
->sleep_interval
= cpu_to_le32(1);
2228 hdrlen
= ieee80211_hdrlen(payload
->frame_control
);
2230 payload_len
= framelen
> hdrlen
? framelen
- hdrlen
: 0;
2232 /* XXX TBD Might just have to abort and return an error */
2233 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2234 printk(KERN_ERR
"%s(): WARNING: Incomplete beacon "
2235 "sent to firmware. Sz=%u MAX=%u\n", __func__
,
2236 payload_len
, MWL8K_FJ_BEACON_MAXLEN
);
2238 payload_len
= payload_len
> MWL8K_FJ_BEACON_MAXLEN
?
2239 MWL8K_FJ_BEACON_MAXLEN
: payload_len
;
2241 if (payload
&& payload_len
)
2242 memcpy(cmd
->beacon_data
, &payload
->u
.beacon
, payload_len
);
2244 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2252 struct mwl8k_cmd_update_sta_db
{
2253 struct mwl8k_cmd_pkt header
;
2255 /* See STADB_ACTION_TYPE */
2258 /* Peer MAC address */
2259 __u8 peer_addr
[IEEE80211_ADDR_LEN
];
2263 /* Peer info - valid during add/update. */
2264 struct peer_capability_info peer_info
;
2265 } __attribute__((packed
));
2267 static int mwl8k_cmd_update_sta_db(struct ieee80211_hw
*hw
,
2268 struct ieee80211_vif
*vif
, __u32 action
)
2270 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2271 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2272 struct mwl8k_cmd_update_sta_db
*cmd
;
2273 struct peer_capability_info
*peer_info
;
2274 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2275 DECLARE_MAC_BUF(mac
);
2279 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2283 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_UPDATE_STADB
);
2284 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2286 cmd
->action
= cpu_to_le32(action
);
2287 peer_info
= &cmd
->peer_info
;
2288 memcpy(cmd
->peer_addr
, mv_vif
->bssid
, IEEE80211_ADDR_LEN
);
2291 case MWL8K_STA_DB_ADD_ENTRY
:
2292 case MWL8K_STA_DB_MODIFY_ENTRY
:
2293 /* Build peer_info block */
2294 peer_info
->peer_type
= MWL8K_PEER_TYPE_ACCESSPOINT
;
2295 peer_info
->basic_caps
= cpu_to_le16(info
->assoc_capability
);
2296 peer_info
->interop
= 1;
2297 peer_info
->amsdu_enabled
= 0;
2299 rates
= peer_info
->legacy_rates
;
2300 for (count
= 0 ; count
< mv_vif
->legacy_nrates
; count
++)
2301 rates
[count
] = bitrates
[count
].hw_value
;
2303 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2305 mv_vif
->peer_id
= peer_info
->station_id
;
2309 case MWL8K_STA_DB_DEL_ENTRY
:
2310 case MWL8K_STA_DB_FLUSH
:
2312 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2314 mv_vif
->peer_id
= 0;
2325 #define IEEE80211_OPMODE_DISABLED 0x00
2326 #define IEEE80211_OPMODE_NON_MEMBER_PROT_MODE 0x01
2327 #define IEEE80211_OPMODE_ONE_20MHZ_STA_PROT_MODE 0x02
2328 #define IEEE80211_OPMODE_HTMIXED_PROT_MODE 0x03
2330 #define MWL8K_RATE_INDEX_MAX_ARRAY 14
2332 #define MWL8K_FRAME_PROT_DISABLED 0x00
2333 #define MWL8K_FRAME_PROT_11G 0x07
2334 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2335 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2336 #define MWL8K_FRAME_PROT_MASK 0x07
2338 struct mwl8k_cmd_update_set_aid
{
2339 struct mwl8k_cmd_pkt header
;
2342 /* AP's MAC address (BSSID) */
2343 __u8 bssid
[IEEE80211_ADDR_LEN
];
2344 __le16 protection_mode
;
2345 __u8 supp_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2346 } __attribute__((packed
));
2348 static int mwl8k_cmd_set_aid(struct ieee80211_hw
*hw
,
2349 struct ieee80211_vif
*vif
)
2351 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2352 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2353 struct mwl8k_cmd_update_set_aid
*cmd
;
2354 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2359 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2363 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_AID
);
2364 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2365 cmd
->aid
= cpu_to_le16(info
->aid
);
2367 memcpy(cmd
->bssid
, mv_vif
->bssid
, IEEE80211_ADDR_LEN
);
2369 prot_mode
= MWL8K_FRAME_PROT_DISABLED
;
2371 if (info
->use_cts_prot
) {
2372 prot_mode
= MWL8K_FRAME_PROT_11G
;
2374 switch (info
->ht_operation_mode
&
2375 IEEE80211_HT_OP_MODE_PROTECTION
) {
2376 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
2377 prot_mode
= MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY
;
2379 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
2380 prot_mode
= MWL8K_FRAME_PROT_11N_HT_ALL
;
2383 prot_mode
= MWL8K_FRAME_PROT_DISABLED
;
2388 cmd
->protection_mode
= cpu_to_le16(prot_mode
);
2390 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2391 cmd
->supp_rates
[count
] = bitrates
[count
].hw_value
;
2393 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2402 struct mwl8k_cmd_update_rateset
{
2403 struct mwl8k_cmd_pkt header
;
2404 __u8 legacy_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2406 /* Bitmap for supported MCS codes. */
2407 __u8 mcs_set
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2408 __u8 reserved
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2409 } __attribute__((packed
));
2411 static int mwl8k_update_rateset(struct ieee80211_hw
*hw
,
2412 struct ieee80211_vif
*vif
)
2414 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2415 struct mwl8k_cmd_update_rateset
*cmd
;
2416 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2420 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2424 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATE
);
2425 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2427 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2428 cmd
->legacy_rates
[count
] = bitrates
[count
].hw_value
;
2430 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2437 * CMD_USE_FIXED_RATE.
2439 #define MWL8K_RATE_TABLE_SIZE 8
2440 #define MWL8K_UCAST_RATE 0
2441 #define MWL8K_MCAST_RATE 1
2442 #define MWL8K_BCAST_RATE 2
2444 #define MWL8K_USE_FIXED_RATE 0x0001
2445 #define MWL8K_USE_AUTO_RATE 0x0002
2447 struct mwl8k_rate_entry
{
2448 /* Set to 1 if HT rate, 0 if legacy. */
2451 /* Set to 1 to use retry_count field. */
2452 __le32 enable_retry
;
2454 /* Specified legacy rate or MCS. */
2457 /* Number of allowed retries. */
2459 } __attribute__((packed
));
2461 struct mwl8k_rate_table
{
2462 /* 1 to allow specified rate and below */
2463 __le32 allow_rate_drop
;
2465 struct mwl8k_rate_entry rate_entry
[MWL8K_RATE_TABLE_SIZE
];
2466 } __attribute__((packed
));
2468 struct mwl8k_cmd_use_fixed_rate
{
2469 struct mwl8k_cmd_pkt header
;
2471 struct mwl8k_rate_table rate_table
;
2473 /* Unicast, Broadcast or Multicast */
2477 } __attribute__((packed
));
2479 static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw
*hw
,
2480 u32 action
, u32 rate_type
, struct mwl8k_rate_table
*rate_table
)
2482 struct mwl8k_cmd_use_fixed_rate
*cmd
;
2486 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2490 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE
);
2491 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2493 cmd
->action
= cpu_to_le32(action
);
2494 cmd
->rate_type
= cpu_to_le32(rate_type
);
2496 if (rate_table
!= NULL
) {
2497 /* Copy over each field manually so
2498 * that bitflipping can be done
2500 cmd
->rate_table
.allow_rate_drop
=
2501 cpu_to_le32(rate_table
->allow_rate_drop
);
2502 cmd
->rate_table
.num_rates
=
2503 cpu_to_le32(rate_table
->num_rates
);
2505 for (count
= 0; count
< rate_table
->num_rates
; count
++) {
2506 struct mwl8k_rate_entry
*dst
=
2507 &cmd
->rate_table
.rate_entry
[count
];
2508 struct mwl8k_rate_entry
*src
=
2509 &rate_table
->rate_entry
[count
];
2511 dst
->is_ht_rate
= cpu_to_le32(src
->is_ht_rate
);
2512 dst
->enable_retry
= cpu_to_le32(src
->enable_retry
);
2513 dst
->rate
= cpu_to_le32(src
->rate
);
2514 dst
->retry_count
= cpu_to_le32(src
->retry_count
);
2518 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2526 * Interrupt handling.
2528 static irqreturn_t
mwl8k_interrupt(int irq
, void *dev_id
)
2530 struct ieee80211_hw
*hw
= dev_id
;
2531 struct mwl8k_priv
*priv
= hw
->priv
;
2534 status
= ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2535 iowrite32(~status
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2537 status
&= priv
->int_mask
;
2541 if (status
& MWL8K_A2H_INT_TX_DONE
)
2542 tasklet_schedule(&priv
->tx_reclaim_task
);
2544 if (status
& MWL8K_A2H_INT_RX_READY
) {
2545 while (rxq_process(hw
, 0, 1))
2546 rxq_refill(hw
, 0, 1);
2549 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
2550 if (priv
->hostcmd_wait
!= NULL
) {
2551 complete(priv
->hostcmd_wait
);
2552 priv
->hostcmd_wait
= NULL
;
2556 if (status
& MWL8K_A2H_INT_QUEUE_EMPTY
) {
2557 if (!priv
->inconfig
&&
2558 priv
->radio_state
&&
2559 mwl8k_txq_busy(priv
))
2560 mwl8k_tx_start(priv
);
2568 * Core driver operations.
2570 static int mwl8k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2572 struct mwl8k_priv
*priv
= hw
->priv
;
2573 int index
= skb_get_queue_mapping(skb
);
2576 if (priv
->current_channel
== NULL
) {
2577 printk(KERN_DEBUG
"%s: dropped TX frame since radio "
2578 "disabled\n", priv
->name
);
2580 return NETDEV_TX_OK
;
2583 rc
= mwl8k_txq_xmit(hw
, index
, skb
);
2588 struct mwl8k_work_struct
{
2589 /* Initialized by mwl8k_queue_work(). */
2590 struct work_struct wt
;
2592 /* Required field passed in to mwl8k_queue_work(). */
2593 struct ieee80211_hw
*hw
;
2595 /* Required field passed in to mwl8k_queue_work(). */
2596 int (*wfunc
)(struct work_struct
*w
);
2598 /* Initialized by mwl8k_queue_work(). */
2599 struct completion
*cmd_wait
;
2605 * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX
2606 * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS.
2610 /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */
2611 unsigned long timeout_ms
;
2613 /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */
2614 u32 txwait_attempts
;
2616 /* Optional field. Defaults to MWL8K_TXWAIT_MS. */
2621 /* Flags controlling behavior of config queue requests */
2623 /* Caller spins while waiting for completion. */
2624 #define MWL8K_WQ_SPIN 0x00000001
2626 /* Wait for TX queues to empty before proceeding with configuration. */
2627 #define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002
2629 /* Queue request and return immediately. */
2630 #define MWL8K_WQ_POST_REQUEST 0x00000004
2633 * Caller sleeps and waits for task complete notification.
2634 * Do not use in atomic context.
2636 #define MWL8K_WQ_SLEEP 0x00000008
2638 /* Free work struct when task is done. */
2639 #define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010
2642 * Config request is queued and returns to caller imediately. Use
2643 * this in atomic context. Work struct is freed by mwl8k_queue_work()
2644 * when this flag is set.
2646 #define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \
2647 MWL8K_WQ_FREE_WORKSTRUCT)
2649 /* Default work queue behavior is to sleep and wait for tx completion. */
2650 #define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY)
2653 * Default config request timeout. Add adjustments to make sure the
2654 * config thread waits long enough for both tx wait and cmd wait before
2658 /* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */
2659 #define MWL8K_TXWAIT_TIMEOUT_MS 1000
2661 /* Default number of TX wait attempts. */
2662 #define MWL8K_WQ_TXWAIT_ATTEMPTS 4
2664 /* Total time to wait for TXQ to drain. */
2665 #define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \
2666 MWL8K_WQ_TXWAIT_ATTEMPTS)
2668 /* Scheduling slop. */
2669 #define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200
2671 #define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \
2673 MWL8K_OS_SCHEDULE_OVERHEAD_MS)
2675 static void mwl8k_config_thread(struct work_struct
*wt
)
2677 struct mwl8k_work_struct
*worker
= (struct mwl8k_work_struct
*)wt
;
2678 struct ieee80211_hw
*hw
= worker
->hw
;
2679 struct mwl8k_priv
*priv
= hw
->priv
;
2682 spin_lock_irq(&priv
->tx_lock
);
2683 priv
->inconfig
= true;
2684 spin_unlock_irq(&priv
->tx_lock
);
2686 ieee80211_stop_queues(hw
);
2689 * Wait for host queues to drain before doing PHY
2690 * reconfiguration. This avoids interrupting any in-flight
2691 * DMA transfers to the hardware.
2693 if (worker
->options
& MWL8K_WQ_TX_WAIT_EMPTY
) {
2697 u32 tx_wait_attempts
= worker
->txwait_attempts
;
2699 time_remaining
= worker
->tx_timeout_ms
;
2700 if (!tx_wait_attempts
)
2701 tx_wait_attempts
= 1;
2703 timeout
= worker
->tx_timeout_ms
/tx_wait_attempts
;
2707 iter
= tx_wait_attempts
;
2711 if (time_remaining
> timeout
) {
2712 time_remaining
-= timeout
;
2713 wait_time
= timeout
;
2715 wait_time
= time_remaining
;
2720 rc
= mwl8k_tx_wait_empty(hw
, wait_time
);
2722 printk(KERN_ERR
"%s() txwait timeout=%ums "
2723 "Retry:%u/%u\n", __func__
, timeout
,
2724 tx_wait_attempts
- iter
+ 1,
2727 } while (rc
&& --iter
);
2729 rc
= iter
? 0 : -ETIMEDOUT
;
2732 rc
= worker
->wfunc(wt
);
2734 spin_lock_irq(&priv
->tx_lock
);
2735 priv
->inconfig
= false;
2736 if (priv
->pending_tx_pkts
&& priv
->radio_state
)
2737 mwl8k_tx_start(priv
);
2738 spin_unlock_irq(&priv
->tx_lock
);
2739 ieee80211_wake_queues(hw
);
2742 if (worker
->options
& MWL8K_WQ_SLEEP
)
2743 complete(worker
->cmd_wait
);
2745 if (worker
->options
& MWL8K_WQ_FREE_WORKSTRUCT
)
2749 static int mwl8k_queue_work(struct ieee80211_hw
*hw
,
2750 struct mwl8k_work_struct
*worker
,
2751 struct workqueue_struct
*wqueue
,
2752 int (*wfunc
)(struct work_struct
*w
))
2754 unsigned long timeout
= 0;
2757 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
2759 if (!worker
->timeout_ms
)
2760 worker
->timeout_ms
= MWL8K_CONFIG_TIMEOUT_MS
;
2762 if (!worker
->options
)
2763 worker
->options
= MWL8K_WQ_DEFAULT_OPTIONS
;
2765 if (!worker
->txwait_attempts
)
2766 worker
->txwait_attempts
= MWL8K_WQ_TXWAIT_ATTEMPTS
;
2768 if (!worker
->tx_timeout_ms
)
2769 worker
->tx_timeout_ms
= MWL8K_TXWAIT_MS
;
2772 worker
->cmd_wait
= &cmd_wait
;
2774 worker
->wfunc
= wfunc
;
2776 INIT_WORK(&worker
->wt
, mwl8k_config_thread
);
2777 queue_work(wqueue
, &worker
->wt
);
2779 if (worker
->options
& MWL8K_WQ_POST_REQUEST
) {
2782 if (worker
->options
& MWL8K_WQ_SPIN
) {
2783 timeout
= worker
->timeout_ms
;
2784 while (timeout
&& (worker
->rc
> 0)) {
2788 } else if (worker
->options
& MWL8K_WQ_SLEEP
)
2789 timeout
= wait_for_completion_timeout(&cmd_wait
,
2790 msecs_to_jiffies(worker
->timeout_ms
));
2795 cancel_work_sync(&worker
->wt
);
2803 struct mwl8k_start_worker
{
2804 struct mwl8k_work_struct header
;
2807 static int mwl8k_start_wt(struct work_struct
*wt
)
2809 struct mwl8k_start_worker
*worker
= (struct mwl8k_start_worker
*)wt
;
2810 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2811 struct mwl8k_priv
*priv
= hw
->priv
;
2814 if (priv
->vif
!= NULL
) {
2816 goto mwl8k_start_exit
;
2820 if (mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_ENABLE
)) {
2822 goto mwl8k_start_exit
;
2825 /* Purge TX/RX HW queues */
2826 if (mwl8k_cmd_set_pre_scan(hw
)) {
2828 goto mwl8k_start_exit
;
2831 if (mwl8k_cmd_set_post_scan(hw
, "\x00\x00\x00\x00\x00\x00")) {
2833 goto mwl8k_start_exit
;
2836 /* Enable firmware rate adaptation */
2837 if (mwl8k_cmd_setrateadaptmode(hw
, 0)) {
2839 goto mwl8k_start_exit
;
2842 /* Disable WMM. WMM gets enabled when stack sends WMM parms */
2843 if (mwl8k_set_wmm(hw
, MWL8K_WMM_DISABLE
)) {
2845 goto mwl8k_start_exit
;
2848 /* Disable sniffer mode */
2849 if (mwl8k_enable_sniffer(hw
, 0))
2856 static int mwl8k_start(struct ieee80211_hw
*hw
)
2858 struct mwl8k_start_worker
*worker
;
2859 struct mwl8k_priv
*priv
= hw
->priv
;
2862 /* Enable tx reclaim tasklet */
2863 tasklet_enable(&priv
->tx_reclaim_task
);
2865 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
2866 IRQF_SHARED
, MWL8K_NAME
, hw
);
2868 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
2871 goto mwl8k_start_disable_tasklet
;
2874 /* Enable interrupts */
2875 iowrite32(priv
->int_mask
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2877 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2878 if (worker
== NULL
) {
2880 goto mwl8k_start_disable_irq
;
2883 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2884 priv
->config_wq
, mwl8k_start_wt
);
2889 if (rc
== -ETIMEDOUT
)
2890 printk(KERN_ERR
"%s() timed out\n", __func__
);
2894 mwl8k_start_disable_irq
:
2895 spin_lock_irq(&priv
->tx_lock
);
2896 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2897 spin_unlock_irq(&priv
->tx_lock
);
2898 free_irq(priv
->pdev
->irq
, hw
);
2900 mwl8k_start_disable_tasklet
:
2901 tasklet_disable(&priv
->tx_reclaim_task
);
2906 struct mwl8k_stop_worker
{
2907 struct mwl8k_work_struct header
;
2910 static int mwl8k_stop_wt(struct work_struct
*wt
)
2912 struct mwl8k_stop_worker
*worker
= (struct mwl8k_stop_worker
*)wt
;
2913 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2916 rc
= mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_DISABLE
);
2921 static void mwl8k_stop(struct ieee80211_hw
*hw
)
2924 struct mwl8k_stop_worker
*worker
;
2925 struct mwl8k_priv
*priv
= hw
->priv
;
2928 if (priv
->vif
!= NULL
)
2931 ieee80211_stop_queues(hw
);
2933 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2937 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2938 priv
->config_wq
, mwl8k_stop_wt
);
2940 if (rc
== -ETIMEDOUT
)
2941 printk(KERN_ERR
"%s() timed out\n", __func__
);
2943 /* Disable interrupts */
2944 spin_lock_irq(&priv
->tx_lock
);
2945 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2946 spin_unlock_irq(&priv
->tx_lock
);
2947 free_irq(priv
->pdev
->irq
, hw
);
2949 /* Stop finalize join worker */
2950 cancel_work_sync(&priv
->finalize_join_worker
);
2951 if (priv
->beacon_skb
!= NULL
)
2952 dev_kfree_skb(priv
->beacon_skb
);
2954 /* Stop tx reclaim tasklet */
2955 tasklet_disable(&priv
->tx_reclaim_task
);
2957 /* Stop config thread */
2958 flush_workqueue(priv
->config_wq
);
2960 /* Return all skbs to mac80211 */
2961 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
2962 mwl8k_txq_reclaim(hw
, i
, 1);
2965 static int mwl8k_add_interface(struct ieee80211_hw
*hw
,
2966 struct ieee80211_if_init_conf
*conf
)
2968 struct mwl8k_priv
*priv
= hw
->priv
;
2969 struct mwl8k_vif
*mwl8k_vif
;
2972 * We only support one active interface at a time.
2974 if (priv
->vif
!= NULL
)
2978 * We only support managed interfaces for now.
2980 if (conf
->type
!= NL80211_IFTYPE_STATION
&&
2981 conf
->type
!= NL80211_IFTYPE_MONITOR
)
2984 /* Clean out driver private area */
2985 mwl8k_vif
= MWL8K_VIF(conf
->vif
);
2986 memset(mwl8k_vif
, 0, sizeof(*mwl8k_vif
));
2988 /* Save the mac address */
2989 memcpy(mwl8k_vif
->mac_addr
, conf
->mac_addr
, IEEE80211_ADDR_LEN
);
2991 /* Back pointer to parent config block */
2992 mwl8k_vif
->priv
= priv
;
2994 /* Setup initial PHY parameters */
2995 memcpy(mwl8k_vif
->legacy_rates
,
2996 priv
->rates
, sizeof(mwl8k_vif
->legacy_rates
));
2997 mwl8k_vif
->legacy_nrates
= ARRAY_SIZE(priv
->rates
);
2999 /* Set Initial sequence number to zero */
3000 mwl8k_vif
->seqno
= 0;
3002 priv
->vif
= conf
->vif
;
3003 priv
->current_channel
= NULL
;
3008 static void mwl8k_remove_interface(struct ieee80211_hw
*hw
,
3009 struct ieee80211_if_init_conf
*conf
)
3011 struct mwl8k_priv
*priv
= hw
->priv
;
3013 if (priv
->vif
== NULL
)
3019 struct mwl8k_config_worker
{
3020 struct mwl8k_work_struct header
;
3024 static int mwl8k_config_wt(struct work_struct
*wt
)
3026 struct mwl8k_config_worker
*worker
=
3027 (struct mwl8k_config_worker
*)wt
;
3028 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3029 struct ieee80211_conf
*conf
= &hw
->conf
;
3030 struct mwl8k_priv
*priv
= hw
->priv
;
3033 if (!conf
->radio_enabled
) {
3034 mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_DISABLE
);
3035 priv
->current_channel
= NULL
;
3037 goto mwl8k_config_exit
;
3040 if (mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_ENABLE
)) {
3042 goto mwl8k_config_exit
;
3045 priv
->current_channel
= conf
->channel
;
3047 if (mwl8k_cmd_set_rf_channel(hw
, conf
->channel
)) {
3049 goto mwl8k_config_exit
;
3052 if (conf
->power_level
> 18)
3053 conf
->power_level
= 18;
3054 if (mwl8k_cmd_802_11_rf_tx_power(hw
, conf
->power_level
)) {
3056 goto mwl8k_config_exit
;
3059 if (mwl8k_cmd_mimo_config(hw
, 0x7, 0x7))
3066 static int mwl8k_config(struct ieee80211_hw
*hw
, u32 changed
)
3069 struct mwl8k_config_worker
*worker
;
3070 struct mwl8k_priv
*priv
= hw
->priv
;
3072 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3076 worker
->changed
= changed
;
3077 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3078 priv
->config_wq
, mwl8k_config_wt
);
3079 if (rc
== -ETIMEDOUT
) {
3080 printk(KERN_ERR
"%s() timed out.\n", __func__
);
3087 * mac80211 will crash on anything other than -EINVAL on
3088 * error. Looks like wireless extensions which calls mac80211
3089 * may be the actual culprit...
3091 return rc
? -EINVAL
: 0;
3094 struct mwl8k_bss_info_changed_worker
{
3095 struct mwl8k_work_struct header
;
3096 struct ieee80211_vif
*vif
;
3097 struct ieee80211_bss_conf
*info
;
3101 static int mwl8k_bss_info_changed_wt(struct work_struct
*wt
)
3103 struct mwl8k_bss_info_changed_worker
*worker
=
3104 (struct mwl8k_bss_info_changed_worker
*)wt
;
3105 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3106 struct ieee80211_vif
*vif
= worker
->vif
;
3107 struct ieee80211_bss_conf
*info
= worker
->info
;
3111 struct mwl8k_priv
*priv
= hw
->priv
;
3112 struct mwl8k_vif
*mwl8k_vif
= MWL8K_VIF(vif
);
3114 changed
= worker
->changed
;
3115 priv
->capture_beacon
= false;
3118 memcpy(&mwl8k_vif
->bss_info
, info
,
3119 sizeof(struct ieee80211_bss_conf
));
3122 if (mwl8k_update_rateset(hw
, vif
))
3123 goto mwl8k_bss_info_changed_exit
;
3125 /* Turn on rate adaptation */
3126 if (mwl8k_cmd_use_fixed_rate(hw
, MWL8K_USE_AUTO_RATE
,
3127 MWL8K_UCAST_RATE
, NULL
))
3128 goto mwl8k_bss_info_changed_exit
;
3130 /* Set radio preamble */
3131 if (mwl8k_set_radio_preamble(hw
,
3132 info
->use_short_preamble
))
3133 goto mwl8k_bss_info_changed_exit
;
3136 if (mwl8k_cmd_set_slot(hw
, info
->use_short_slot
?
3137 MWL8K_SHORT_SLOTTIME
: MWL8K_LONG_SLOTTIME
))
3138 goto mwl8k_bss_info_changed_exit
;
3140 /* Update peer rate info */
3141 if (mwl8k_cmd_update_sta_db(hw
, vif
,
3142 MWL8K_STA_DB_MODIFY_ENTRY
))
3143 goto mwl8k_bss_info_changed_exit
;
3146 if (mwl8k_cmd_set_aid(hw
, vif
))
3147 goto mwl8k_bss_info_changed_exit
;
3150 * Finalize the join. Tell rx handler to process
3151 * next beacon from our BSSID.
3153 memcpy(priv
->capture_bssid
,
3154 mwl8k_vif
->bssid
, IEEE80211_ADDR_LEN
);
3155 priv
->capture_beacon
= true;
3157 mwl8k_cmd_update_sta_db(hw
, vif
, MWL8K_STA_DB_DEL_ENTRY
);
3158 memset(&mwl8k_vif
->bss_info
, 0,
3159 sizeof(struct ieee80211_bss_conf
));
3160 memset(mwl8k_vif
->bssid
, 0, IEEE80211_ADDR_LEN
);
3163 mwl8k_bss_info_changed_exit
:
3168 static void mwl8k_bss_info_changed(struct ieee80211_hw
*hw
,
3169 struct ieee80211_vif
*vif
,
3170 struct ieee80211_bss_conf
*info
,
3173 struct mwl8k_bss_info_changed_worker
*worker
;
3174 struct mwl8k_priv
*priv
= hw
->priv
;
3175 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
3178 if (changed
& BSS_CHANGED_BSSID
)
3179 memcpy(mv_vif
->bssid
, info
->bssid
, IEEE80211_ADDR_LEN
);
3181 if ((changed
& BSS_CHANGED_ASSOC
) == 0)
3184 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3189 worker
->info
= info
;
3190 worker
->changed
= changed
;
3191 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3193 mwl8k_bss_info_changed_wt
);
3195 if (rc
== -ETIMEDOUT
)
3196 printk(KERN_ERR
"%s() timed out\n", __func__
);
3199 struct mwl8k_configure_filter_worker
{
3200 struct mwl8k_work_struct header
;
3201 unsigned int changed_flags
;
3202 unsigned int *total_flags
;
3204 struct dev_addr_list
*mclist
;
3207 #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
3209 static int mwl8k_configure_filter_wt(struct work_struct
*wt
)
3211 struct mwl8k_configure_filter_worker
*worker
=
3212 (struct mwl8k_configure_filter_worker
*)wt
;
3214 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3215 unsigned int changed_flags
= worker
->changed_flags
;
3216 unsigned int *total_flags
= worker
->total_flags
;
3217 int mc_count
= worker
->mc_count
;
3218 struct dev_addr_list
*mclist
= worker
->mclist
;
3220 struct mwl8k_priv
*priv
= hw
->priv
;
3221 struct mwl8k_vif
*mv_vif
;
3224 if (changed_flags
& FIF_BCN_PRBRESP_PROMISC
) {
3225 if (*total_flags
& FIF_BCN_PRBRESP_PROMISC
)
3226 rc
= mwl8k_cmd_set_pre_scan(hw
);
3228 mv_vif
= MWL8K_VIF(priv
->vif
);
3229 rc
= mwl8k_cmd_set_post_scan(hw
, mv_vif
->bssid
);
3234 goto mwl8k_configure_filter_exit
;
3236 mc_count
= mc_count
< priv
->num_mcaddrs
?
3237 mc_count
: priv
->num_mcaddrs
;
3238 rc
= mwl8k_cmd_mac_multicast_adr(hw
, mc_count
, mclist
);
3241 "%s()Error setting multicast addresses\n",
3245 mwl8k_configure_filter_exit
:
3249 static void mwl8k_configure_filter(struct ieee80211_hw
*hw
,
3250 unsigned int changed_flags
,
3251 unsigned int *total_flags
,
3253 struct dev_addr_list
*mclist
)
3256 struct mwl8k_configure_filter_worker
*worker
;
3257 struct mwl8k_priv
*priv
= hw
->priv
;
3259 /* Clear unsupported feature flags */
3260 *total_flags
&= MWL8K_SUPPORTED_IF_FLAGS
;
3262 if (!(changed_flags
& MWL8K_SUPPORTED_IF_FLAGS
) && !mc_count
)
3265 worker
= kzalloc(sizeof(*worker
), GFP_ATOMIC
);
3269 worker
->header
.options
= MWL8K_WQ_QUEUE_ONLY
| MWL8K_WQ_TX_WAIT_EMPTY
;
3270 worker
->changed_flags
= changed_flags
;
3271 worker
->total_flags
= total_flags
;
3272 worker
->mc_count
= mc_count
;
3273 worker
->mclist
= mclist
;
3275 mwl8k_queue_work(hw
, &worker
->header
, priv
->config_wq
,
3276 mwl8k_configure_filter_wt
);
3279 struct mwl8k_set_rts_threshold_worker
{
3280 struct mwl8k_work_struct header
;
3284 static int mwl8k_set_rts_threshold_wt(struct work_struct
*wt
)
3286 struct mwl8k_set_rts_threshold_worker
*worker
=
3287 (struct mwl8k_set_rts_threshold_worker
*)wt
;
3289 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3290 u16 threshold
= (u16
)(worker
->value
);
3293 rc
= mwl8k_rts_threshold(hw
, MWL8K_CMD_SET
, &threshold
);
3298 static int mwl8k_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
3301 struct mwl8k_set_rts_threshold_worker
*worker
;
3302 struct mwl8k_priv
*priv
= hw
->priv
;
3304 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3308 worker
->value
= value
;
3310 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3312 mwl8k_set_rts_threshold_wt
);
3315 if (rc
== -ETIMEDOUT
) {
3316 printk(KERN_ERR
"%s() timed out\n", __func__
);
3323 struct mwl8k_conf_tx_worker
{
3324 struct mwl8k_work_struct header
;
3326 const struct ieee80211_tx_queue_params
*params
;
3329 static int mwl8k_conf_tx_wt(struct work_struct
*wt
)
3331 struct mwl8k_conf_tx_worker
*worker
=
3332 (struct mwl8k_conf_tx_worker
*)wt
;
3334 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3335 u16 queue
= worker
->queue
;
3336 const struct ieee80211_tx_queue_params
*params
= worker
->params
;
3338 struct mwl8k_priv
*priv
= hw
->priv
;
3341 if (priv
->wmm_mode
== MWL8K_WMM_DISABLE
)
3342 if (mwl8k_set_wmm(hw
, MWL8K_WMM_ENABLE
)) {
3344 goto mwl8k_conf_tx_exit
;
3347 if (mwl8k_set_edca_params(hw
, GET_TXQ(queue
), params
->cw_min
,
3348 params
->cw_max
, params
->aifs
, params
->txop
))
3354 static int mwl8k_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
3355 const struct ieee80211_tx_queue_params
*params
)
3358 struct mwl8k_conf_tx_worker
*worker
;
3359 struct mwl8k_priv
*priv
= hw
->priv
;
3361 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3365 worker
->queue
= queue
;
3366 worker
->params
= params
;
3367 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3368 priv
->config_wq
, mwl8k_conf_tx_wt
);
3370 if (rc
== -ETIMEDOUT
) {
3371 printk(KERN_ERR
"%s() timed out\n", __func__
);
3377 static int mwl8k_get_tx_stats(struct ieee80211_hw
*hw
,
3378 struct ieee80211_tx_queue_stats
*stats
)
3380 struct mwl8k_priv
*priv
= hw
->priv
;
3381 struct mwl8k_tx_queue
*txq
;
3384 spin_lock_bh(&priv
->tx_lock
);
3385 for (index
= 0; index
< MWL8K_TX_QUEUES
; index
++) {
3386 txq
= priv
->txq
+ index
;
3387 memcpy(&stats
[index
], &txq
->tx_stats
,
3388 sizeof(struct ieee80211_tx_queue_stats
));
3390 spin_unlock_bh(&priv
->tx_lock
);
3394 struct mwl8k_get_stats_worker
{
3395 struct mwl8k_work_struct header
;
3396 struct ieee80211_low_level_stats
*stats
;
3399 static int mwl8k_get_stats_wt(struct work_struct
*wt
)
3401 struct mwl8k_get_stats_worker
*worker
=
3402 (struct mwl8k_get_stats_worker
*)wt
;
3404 return mwl8k_cmd_802_11_get_stat(worker
->header
.hw
, worker
->stats
);
3407 static int mwl8k_get_stats(struct ieee80211_hw
*hw
,
3408 struct ieee80211_low_level_stats
*stats
)
3411 struct mwl8k_get_stats_worker
*worker
;
3412 struct mwl8k_priv
*priv
= hw
->priv
;
3414 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3418 worker
->stats
= stats
;
3419 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3420 priv
->config_wq
, mwl8k_get_stats_wt
);
3423 if (rc
== -ETIMEDOUT
) {
3424 printk(KERN_ERR
"%s() timed out\n", __func__
);
3431 static const struct ieee80211_ops mwl8k_ops
= {
3433 .start
= mwl8k_start
,
3435 .add_interface
= mwl8k_add_interface
,
3436 .remove_interface
= mwl8k_remove_interface
,
3437 .config
= mwl8k_config
,
3438 .bss_info_changed
= mwl8k_bss_info_changed
,
3439 .configure_filter
= mwl8k_configure_filter
,
3440 .set_rts_threshold
= mwl8k_set_rts_threshold
,
3441 .conf_tx
= mwl8k_conf_tx
,
3442 .get_tx_stats
= mwl8k_get_tx_stats
,
3443 .get_stats
= mwl8k_get_stats
,
3446 static void mwl8k_tx_reclaim_handler(unsigned long data
)
3449 struct ieee80211_hw
*hw
= (struct ieee80211_hw
*) data
;
3450 struct mwl8k_priv
*priv
= hw
->priv
;
3452 spin_lock_bh(&priv
->tx_lock
);
3453 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3454 mwl8k_txq_reclaim(hw
, i
, 0);
3456 if (priv
->tx_wait
!= NULL
) {
3457 int count
= mwl8k_txq_busy(priv
);
3459 complete(priv
->tx_wait
);
3460 priv
->tx_wait
= NULL
;
3463 spin_unlock_bh(&priv
->tx_lock
);
3466 static void mwl8k_finalize_join_worker(struct work_struct
*work
)
3468 struct mwl8k_priv
*priv
=
3469 container_of(work
, struct mwl8k_priv
, finalize_join_worker
);
3470 struct sk_buff
*skb
= priv
->beacon_skb
;
3471 u8 dtim
= (MWL8K_VIF(priv
->vif
))->bss_info
.dtim_period
;
3473 mwl8k_finalize_join(priv
->hw
, skb
->data
, skb
->len
, dtim
);
3476 priv
->beacon_skb
= NULL
;
3479 static int __devinit
mwl8k_probe(struct pci_dev
*pdev
,
3480 const struct pci_device_id
*id
)
3482 struct ieee80211_hw
*hw
;
3483 struct mwl8k_priv
*priv
;
3484 DECLARE_MAC_BUF(mac
);
3489 rc
= pci_enable_device(pdev
);
3491 printk(KERN_ERR
"%s: Cannot enable new PCI device\n",
3496 rc
= pci_request_regions(pdev
, MWL8K_NAME
);
3498 printk(KERN_ERR
"%s: Cannot obtain PCI resources\n",
3503 pci_set_master(pdev
);
3505 hw
= ieee80211_alloc_hw(sizeof(*priv
), &mwl8k_ops
);
3507 printk(KERN_ERR
"%s: ieee80211 alloc failed\n", MWL8K_NAME
);
3515 priv
->hostcmd_wait
= NULL
;
3516 priv
->tx_wait
= NULL
;
3517 priv
->inconfig
= false;
3518 priv
->wep_enabled
= 0;
3519 priv
->wmm_mode
= false;
3520 priv
->pending_tx_pkts
= 0;
3521 strncpy(priv
->name
, MWL8K_NAME
, sizeof(priv
->name
));
3523 spin_lock_init(&priv
->fw_lock
);
3525 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3526 pci_set_drvdata(pdev
, hw
);
3528 priv
->regs
= pci_iomap(pdev
, 1, 0x10000);
3529 if (priv
->regs
== NULL
) {
3530 printk(KERN_ERR
"%s: Cannot map device memory\n", priv
->name
);
3534 memcpy(priv
->channels
, mwl8k_channels
, sizeof(mwl8k_channels
));
3535 priv
->band
.band
= IEEE80211_BAND_2GHZ
;
3536 priv
->band
.channels
= priv
->channels
;
3537 priv
->band
.n_channels
= ARRAY_SIZE(mwl8k_channels
);
3538 priv
->band
.bitrates
= priv
->rates
;
3539 priv
->band
.n_bitrates
= ARRAY_SIZE(mwl8k_rates
);
3540 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &priv
->band
;
3542 BUILD_BUG_ON(sizeof(priv
->rates
) != sizeof(mwl8k_rates
));
3543 memcpy(priv
->rates
, mwl8k_rates
, sizeof(mwl8k_rates
));
3546 * Extra headroom is the size of the required DMA header
3547 * minus the size of the smallest 802.11 frame (CTS frame).
3549 hw
->extra_tx_headroom
=
3550 sizeof(struct mwl8k_dma_data
) - sizeof(struct ieee80211_cts
);
3552 hw
->channel_change_time
= 10;
3554 hw
->queues
= MWL8K_TX_QUEUES
;
3556 hw
->wiphy
->interface_modes
=
3557 BIT(NL80211_IFTYPE_STATION
) | BIT(NL80211_IFTYPE_MONITOR
);
3559 /* Set rssi and noise values to dBm */
3560 hw
->flags
|= (IEEE80211_HW_SIGNAL_DBM
| IEEE80211_HW_NOISE_DBM
);
3561 hw
->vif_data_size
= sizeof(struct mwl8k_vif
);
3564 /* Set default radio state and preamble */
3565 priv
->radio_preamble
= MWL8K_RADIO_DEFAULT_PREAMBLE
;
3566 priv
->radio_state
= MWL8K_RADIO_DISABLE
;
3568 /* Finalize join worker */
3569 INIT_WORK(&priv
->finalize_join_worker
, mwl8k_finalize_join_worker
);
3571 /* TX reclaim tasklet */
3572 tasklet_init(&priv
->tx_reclaim_task
,
3573 mwl8k_tx_reclaim_handler
, (unsigned long)hw
);
3574 tasklet_disable(&priv
->tx_reclaim_task
);
3576 /* Config workthread */
3577 priv
->config_wq
= create_singlethread_workqueue("mwl8k_config");
3578 if (priv
->config_wq
== NULL
)
3581 /* Power management cookie */
3582 priv
->cookie
= pci_alloc_consistent(priv
->pdev
, 4, &priv
->cookie_dma
);
3583 if (priv
->cookie
== NULL
)
3586 rc
= mwl8k_rxq_init(hw
, 0);
3589 rxq_refill(hw
, 0, INT_MAX
);
3591 spin_lock_init(&priv
->tx_lock
);
3593 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++) {
3594 rc
= mwl8k_txq_init(hw
, i
);
3596 goto err_free_queues
;
3599 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
3601 iowrite32(priv
->int_mask
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3602 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL
);
3603 iowrite32(0xffffffff, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK
);
3605 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
3606 IRQF_SHARED
, MWL8K_NAME
, hw
);
3608 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
3610 goto err_free_queues
;
3613 /* Reset firmware and hardware */
3614 mwl8k_hw_reset(priv
);
3616 /* Ask userland hotplug daemon for the device firmware */
3617 rc
= mwl8k_request_firmware(priv
, (u32
)id
->driver_data
);
3619 printk(KERN_ERR
"%s: Firmware files not found\n", priv
->name
);
3623 /* Load firmware into hardware */
3624 rc
= mwl8k_load_firmware(priv
);
3626 printk(KERN_ERR
"%s: Cannot start firmware\n", priv
->name
);
3627 goto err_stop_firmware
;
3630 /* Reclaim memory once firmware is successfully loaded */
3631 mwl8k_release_firmware(priv
);
3634 * Temporarily enable interrupts. Initial firmware host
3635 * commands use interrupts and avoids polling. Disable
3636 * interrupts when done.
3638 priv
->int_mask
|= MWL8K_A2H_EVENTS
;
3640 iowrite32(priv
->int_mask
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3642 /* Get config data, mac addrs etc */
3643 rc
= mwl8k_cmd_get_hw_spec(hw
);
3645 printk(KERN_ERR
"%s: Cannot initialise firmware\n", priv
->name
);
3646 goto err_stop_firmware
;
3649 /* Turn radio off */
3650 rc
= mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_DISABLE
);
3652 printk(KERN_ERR
"%s: Cannot disable\n", priv
->name
);
3653 goto err_stop_firmware
;
3656 /* Disable interrupts */
3657 spin_lock_irq(&priv
->tx_lock
);
3658 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3659 spin_unlock_irq(&priv
->tx_lock
);
3660 free_irq(priv
->pdev
->irq
, hw
);
3662 rc
= ieee80211_register_hw(hw
);
3664 printk(KERN_ERR
"%s: Cannot register device\n", priv
->name
);
3665 goto err_stop_firmware
;
3668 fw
= (u8
*)&priv
->fw_rev
;
3669 printk(KERN_INFO
"%s: 88W%u %s\n", priv
->name
, priv
->part_num
,
3671 printk(KERN_INFO
"%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n",
3672 priv
->name
, MWL8K_VERSION
, fw
[3], fw
[2], fw
[1], fw
[0]);
3673 printk(KERN_INFO
"%s: MAC Address: %s\n", priv
->name
,
3674 print_mac(mac
, hw
->wiphy
->perm_addr
));
3679 mwl8k_hw_reset(priv
);
3680 mwl8k_release_firmware(priv
);
3683 spin_lock_irq(&priv
->tx_lock
);
3684 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3685 spin_unlock_irq(&priv
->tx_lock
);
3686 free_irq(priv
->pdev
->irq
, hw
);
3689 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3690 mwl8k_txq_deinit(hw
, i
);
3691 mwl8k_rxq_deinit(hw
, 0);
3694 if (priv
->cookie
!= NULL
)
3695 pci_free_consistent(priv
->pdev
, 4,
3696 priv
->cookie
, priv
->cookie_dma
);
3698 if (priv
->regs
!= NULL
)
3699 pci_iounmap(pdev
, priv
->regs
);
3701 if (priv
->config_wq
!= NULL
)
3702 destroy_workqueue(priv
->config_wq
);
3704 pci_set_drvdata(pdev
, NULL
);
3705 ieee80211_free_hw(hw
);
3708 pci_release_regions(pdev
);
3709 pci_disable_device(pdev
);
3714 static void __devexit
mwl8k_shutdown(struct pci_dev
*pdev
)
3716 printk(KERN_ERR
"===>%s(%u)\n", __func__
, __LINE__
);
3719 static void __devexit
mwl8k_remove(struct pci_dev
*pdev
)
3721 struct ieee80211_hw
*hw
= pci_get_drvdata(pdev
);
3722 struct mwl8k_priv
*priv
;
3729 ieee80211_stop_queues(hw
);
3731 /* Remove tx reclaim tasklet */
3732 tasklet_kill(&priv
->tx_reclaim_task
);
3734 /* Stop config thread */
3735 destroy_workqueue(priv
->config_wq
);
3738 mwl8k_hw_reset(priv
);
3740 /* Return all skbs to mac80211 */
3741 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3742 mwl8k_txq_reclaim(hw
, i
, 1);
3744 ieee80211_unregister_hw(hw
);
3746 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3747 mwl8k_txq_deinit(hw
, i
);
3749 mwl8k_rxq_deinit(hw
, 0);
3751 pci_free_consistent(priv
->pdev
, 4,
3752 priv
->cookie
, priv
->cookie_dma
);
3754 pci_iounmap(pdev
, priv
->regs
);
3755 pci_set_drvdata(pdev
, NULL
);
3756 ieee80211_free_hw(hw
);
3757 pci_release_regions(pdev
);
3758 pci_disable_device(pdev
);
3761 static struct pci_driver mwl8k_driver
= {
3763 .id_table
= mwl8k_table
,
3764 .probe
= mwl8k_probe
,
3765 .remove
= __devexit_p(mwl8k_remove
),
3766 .shutdown
= __devexit_p(mwl8k_shutdown
),
3769 static int __init
mwl8k_init(void)
3771 return pci_register_driver(&mwl8k_driver
);
3774 static void __exit
mwl8k_exit(void)
3776 pci_unregister_driver(&mwl8k_driver
);
3779 module_init(mwl8k_init
);
3780 module_exit(mwl8k_exit
);