2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
5 * Copyright (C) 2008 Marvell Semiconductor Inc.
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.
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>
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"
30 MODULE_DESCRIPTION(MWL8K_DESC
);
31 MODULE_VERSION(MWL8K_VERSION
);
32 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
33 MODULE_LICENSE("GPL");
35 static DEFINE_PCI_DEVICE_TABLE(mwl8k_table
) = {
36 { PCI_VDEVICE(MARVELL
, 0x2a2b), .driver_data
= 8687, },
37 { PCI_VDEVICE(MARVELL
, 0x2a30), .driver_data
= 8687, },
40 MODULE_DEVICE_TABLE(pci
, mwl8k_table
);
42 /* Register definitions */
43 #define MWL8K_HIU_GEN_PTR 0x00000c10
44 #define MWL8K_MODE_STA 0x0000005a
45 #define MWL8K_MODE_AP 0x000000a5
46 #define MWL8K_HIU_INT_CODE 0x00000c14
47 #define MWL8K_FWSTA_READY 0xf0f1f2f4
48 #define MWL8K_FWAP_READY 0xf1f2f4a5
49 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
50 #define MWL8K_HIU_SCRATCH 0x00000c40
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
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)
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
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)
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)
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 */
97 #define MWL8K_RX_QUEUES 1
98 #define MWL8K_TX_QUEUES 4
100 struct mwl8k_rx_queue
{
103 /* hw receives here */
106 /* refill descs here */
109 struct mwl8k_rx_desc
*rx_desc_area
;
110 dma_addr_t rx_desc_dma
;
111 struct sk_buff
**rx_skb
;
116 * The DMA engine requires a modification to the payload.
117 * If the skbuff is shared/cloned, it needs to be unshared.
118 * This method is used to ensure the stack always gets back
119 * the skbuff it sent for transmission.
121 struct sk_buff
*clone
;
125 struct mwl8k_tx_queue
{
126 /* hw transmits here */
129 /* sw appends here */
132 struct ieee80211_tx_queue_stats tx_stats
;
133 struct mwl8k_tx_desc
*tx_desc_area
;
134 dma_addr_t tx_desc_dma
;
135 struct mwl8k_skb
*tx_skb
;
138 /* Pointers to the firmware data and meta information about it. */
139 struct mwl8k_firmware
{
141 struct firmware
*ucode
;
143 /* Boot helper code */
144 struct firmware
*helper
;
149 struct ieee80211_hw
*hw
;
151 struct pci_dev
*pdev
;
153 /* firmware access lock */
156 /* firmware files and meta data */
157 struct mwl8k_firmware fw
;
160 /* lock held over TX and TX reap */
163 struct ieee80211_vif
*vif
;
165 struct ieee80211_channel
*current_channel
;
167 /* power management status cookie from firmware */
169 dma_addr_t cookie_dma
;
176 * Running count of TX packets in flight, to avoid
177 * iterating over the transmit rings each time.
181 struct mwl8k_rx_queue rxq
[MWL8K_RX_QUEUES
];
182 struct mwl8k_tx_queue txq
[MWL8K_TX_QUEUES
];
185 struct ieee80211_supported_band band
;
186 struct ieee80211_channel channels
[14];
187 struct ieee80211_rate rates
[12];
190 bool radio_short_preamble
;
193 /* Set if PHY config is in progress */
196 /* XXX need to convert this to handle multiple interfaces */
198 u8 capture_bssid
[ETH_ALEN
];
199 struct sk_buff
*beacon_skb
;
202 * This FJ worker has to be global as it is scheduled from the
203 * RX handler. At this point we don't know which interface it
204 * belongs to until the list of bssids waiting to complete join
207 struct work_struct finalize_join_worker
;
209 /* Tasklet to reclaim TX descriptors and buffers after tx */
210 struct tasklet_struct tx_reclaim_task
;
212 /* Work thread to serialize configuration requests */
213 struct workqueue_struct
*config_wq
;
214 struct completion
*hostcmd_wait
;
215 struct completion
*tx_wait
;
218 /* Per interface specific private data */
220 /* backpointer to parent config block */
221 struct mwl8k_priv
*priv
;
223 /* BSS config of AP or IBSS from mac80211*/
224 struct ieee80211_bss_conf bss_info
;
226 /* BSSID of AP or IBSS */
228 u8 mac_addr
[ETH_ALEN
];
231 * Subset of supported legacy rates.
232 * Intersection of AP and STA supported rates.
234 struct ieee80211_rate legacy_rates
[12];
236 /* number of supported legacy rates */
239 /* Index into station database.Returned by update_sta_db call */
242 /* Non AMPDU sequence number assigned by driver */
246 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
248 static const struct ieee80211_channel mwl8k_channels
[] = {
249 { .center_freq
= 2412, .hw_value
= 1, },
250 { .center_freq
= 2417, .hw_value
= 2, },
251 { .center_freq
= 2422, .hw_value
= 3, },
252 { .center_freq
= 2427, .hw_value
= 4, },
253 { .center_freq
= 2432, .hw_value
= 5, },
254 { .center_freq
= 2437, .hw_value
= 6, },
255 { .center_freq
= 2442, .hw_value
= 7, },
256 { .center_freq
= 2447, .hw_value
= 8, },
257 { .center_freq
= 2452, .hw_value
= 9, },
258 { .center_freq
= 2457, .hw_value
= 10, },
259 { .center_freq
= 2462, .hw_value
= 11, },
262 static const struct ieee80211_rate mwl8k_rates
[] = {
263 { .bitrate
= 10, .hw_value
= 2, },
264 { .bitrate
= 20, .hw_value
= 4, },
265 { .bitrate
= 55, .hw_value
= 11, },
266 { .bitrate
= 60, .hw_value
= 12, },
267 { .bitrate
= 90, .hw_value
= 18, },
268 { .bitrate
= 110, .hw_value
= 22, },
269 { .bitrate
= 120, .hw_value
= 24, },
270 { .bitrate
= 180, .hw_value
= 36, },
271 { .bitrate
= 240, .hw_value
= 48, },
272 { .bitrate
= 360, .hw_value
= 72, },
273 { .bitrate
= 480, .hw_value
= 96, },
274 { .bitrate
= 540, .hw_value
= 108, },
279 /* Short Slot: 9us slot time */
280 #define MWL8K_SHORT_SLOTTIME 1
282 /* Long slot: 20us slot time */
283 #define MWL8K_LONG_SLOTTIME 0
285 /* Set or get info from Firmware */
286 #define MWL8K_CMD_SET 0x0001
287 #define MWL8K_CMD_GET 0x0000
289 /* Firmware command codes */
290 #define MWL8K_CMD_CODE_DNLD 0x0001
291 #define MWL8K_CMD_GET_HW_SPEC 0x0003
292 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
293 #define MWL8K_CMD_GET_STAT 0x0014
294 #define MWL8K_CMD_RADIO_CONTROL 0x001c
295 #define MWL8K_CMD_RF_TX_POWER 0x001e
296 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
297 #define MWL8K_CMD_SET_POST_SCAN 0x0108
298 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
299 #define MWL8K_CMD_SET_AID 0x010d
300 #define MWL8K_CMD_SET_RATE 0x0110
301 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
302 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
303 #define MWL8K_CMD_SET_SLOT 0x0114
304 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
305 #define MWL8K_CMD_SET_WMM_MODE 0x0123
306 #define MWL8K_CMD_MIMO_CONFIG 0x0125
307 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
308 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
309 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
310 #define MWL8K_CMD_UPDATE_STADB 0x1123
312 static const char *mwl8k_cmd_name(u16 cmd
, char *buf
, int bufsize
)
314 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
315 snprintf(buf, bufsize, "%s", #x);\
318 switch (cmd
& ~0x8000) {
319 MWL8K_CMDNAME(CODE_DNLD
);
320 MWL8K_CMDNAME(GET_HW_SPEC
);
321 MWL8K_CMDNAME(MAC_MULTICAST_ADR
);
322 MWL8K_CMDNAME(GET_STAT
);
323 MWL8K_CMDNAME(RADIO_CONTROL
);
324 MWL8K_CMDNAME(RF_TX_POWER
);
325 MWL8K_CMDNAME(SET_PRE_SCAN
);
326 MWL8K_CMDNAME(SET_POST_SCAN
);
327 MWL8K_CMDNAME(SET_RF_CHANNEL
);
328 MWL8K_CMDNAME(SET_AID
);
329 MWL8K_CMDNAME(SET_RATE
);
330 MWL8K_CMDNAME(SET_FINALIZE_JOIN
);
331 MWL8K_CMDNAME(RTS_THRESHOLD
);
332 MWL8K_CMDNAME(SET_SLOT
);
333 MWL8K_CMDNAME(SET_EDCA_PARAMS
);
334 MWL8K_CMDNAME(SET_WMM_MODE
);
335 MWL8K_CMDNAME(MIMO_CONFIG
);
336 MWL8K_CMDNAME(USE_FIXED_RATE
);
337 MWL8K_CMDNAME(ENABLE_SNIFFER
);
338 MWL8K_CMDNAME(SET_RATEADAPT_MODE
);
339 MWL8K_CMDNAME(UPDATE_STADB
);
341 snprintf(buf
, bufsize
, "0x%x", cmd
);
348 /* Hardware and firmware reset */
349 static void mwl8k_hw_reset(struct mwl8k_priv
*priv
)
351 iowrite32(MWL8K_H2A_INT_RESET
,
352 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
353 iowrite32(MWL8K_H2A_INT_RESET
,
354 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
358 /* Release fw image */
359 static void mwl8k_release_fw(struct firmware
**fw
)
363 release_firmware(*fw
);
367 static void mwl8k_release_firmware(struct mwl8k_priv
*priv
)
369 mwl8k_release_fw(&priv
->fw
.ucode
);
370 mwl8k_release_fw(&priv
->fw
.helper
);
373 /* Request fw image */
374 static int mwl8k_request_fw(struct mwl8k_priv
*priv
,
375 const char *fname
, struct firmware
**fw
)
377 /* release current image */
379 mwl8k_release_fw(fw
);
381 return request_firmware((const struct firmware
**)fw
,
382 fname
, &priv
->pdev
->dev
);
385 static int mwl8k_request_firmware(struct mwl8k_priv
*priv
, u32 part_num
)
390 priv
->part_num
= part_num
;
392 snprintf(filename
, sizeof(filename
),
393 "mwl8k/helper_%u.fw", priv
->part_num
);
395 rc
= mwl8k_request_fw(priv
, filename
, &priv
->fw
.helper
);
398 "%s Error requesting helper firmware file %s\n",
399 pci_name(priv
->pdev
), filename
);
403 snprintf(filename
, sizeof(filename
),
404 "mwl8k/fmimage_%u.fw", priv
->part_num
);
406 rc
= mwl8k_request_fw(priv
, filename
, &priv
->fw
.ucode
);
408 printk(KERN_ERR
"%s Error requesting firmware file %s\n",
409 pci_name(priv
->pdev
), filename
);
410 mwl8k_release_fw(&priv
->fw
.helper
);
417 struct mwl8k_cmd_pkt
{
423 } __attribute__((packed
));
429 mwl8k_send_fw_load_cmd(struct mwl8k_priv
*priv
, void *data
, int length
)
431 void __iomem
*regs
= priv
->regs
;
436 dma_addr
= pci_map_single(priv
->pdev
, data
, length
, PCI_DMA_TODEVICE
);
437 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
440 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
441 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
442 iowrite32(MWL8K_H2A_INT_DOORBELL
,
443 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
444 iowrite32(MWL8K_H2A_INT_DUMMY
,
445 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
452 int_code
= ioread32(regs
+ MWL8K_HIU_INT_CODE
);
453 if (int_code
== MWL8K_INT_CODE_CMD_FINISHED
) {
454 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
462 pci_unmap_single(priv
->pdev
, dma_addr
, length
, PCI_DMA_TODEVICE
);
465 * Clear 'command done' interrupt bit.
471 status
= ioread32(priv
->regs
+
472 MWL8K_HIU_A2H_INTERRUPT_STATUS
);
473 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
474 iowrite32(~MWL8K_A2H_INT_OPC_DONE
,
475 priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
476 ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
486 static int mwl8k_load_fw_image(struct mwl8k_priv
*priv
,
487 const u8
*data
, size_t length
)
489 struct mwl8k_cmd_pkt
*cmd
;
493 cmd
= kmalloc(sizeof(*cmd
) + 256, GFP_KERNEL
);
497 cmd
->code
= cpu_to_le16(MWL8K_CMD_CODE_DNLD
);
503 int block_size
= length
> 256 ? 256 : length
;
505 memcpy(cmd
->payload
, data
+ done
, block_size
);
506 cmd
->length
= cpu_to_le16(block_size
);
508 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
,
509 sizeof(*cmd
) + block_size
);
514 length
-= block_size
;
519 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
, sizeof(*cmd
));
527 static int mwl8k_feed_fw_image(struct mwl8k_priv
*priv
,
528 const u8
*data
, size_t length
)
530 unsigned char *buffer
;
531 int may_continue
, rc
= 0;
532 u32 done
, prev_block_size
;
534 buffer
= kmalloc(1024, GFP_KERNEL
);
541 while (may_continue
> 0) {
544 block_size
= ioread32(priv
->regs
+ MWL8K_HIU_SCRATCH
);
545 if (block_size
& 1) {
549 done
+= prev_block_size
;
550 length
-= prev_block_size
;
553 if (block_size
> 1024 || block_size
> length
) {
563 if (block_size
== 0) {
570 prev_block_size
= block_size
;
571 memcpy(buffer
, data
+ done
, block_size
);
573 rc
= mwl8k_send_fw_load_cmd(priv
, buffer
, block_size
);
578 if (!rc
&& length
!= 0)
586 static int mwl8k_load_firmware(struct mwl8k_priv
*priv
)
590 const u8
*ucode
= priv
->fw
.ucode
->data
;
591 size_t ucode_len
= priv
->fw
.ucode
->size
;
592 const u8
*helper
= priv
->fw
.helper
->data
;
593 size_t helper_len
= priv
->fw
.helper
->size
;
595 if (!memcmp(ucode
, "\x01\x00\x00\x00", 4)) {
596 rc
= mwl8k_load_fw_image(priv
, helper
, helper_len
);
598 printk(KERN_ERR
"%s: unable to load firmware "
599 "helper image\n", pci_name(priv
->pdev
));
604 rc
= mwl8k_feed_fw_image(priv
, ucode
, ucode_len
);
606 rc
= mwl8k_load_fw_image(priv
, ucode
, ucode_len
);
610 printk(KERN_ERR
"%s: unable to load firmware data\n",
611 pci_name(priv
->pdev
));
615 iowrite32(MWL8K_MODE_STA
, priv
->regs
+ MWL8K_HIU_GEN_PTR
);
620 if (ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
)
621 == MWL8K_FWSTA_READY
)
626 return loops
? 0 : -ETIMEDOUT
;
631 * Defines shared between transmission and reception.
633 /* HT control fields for firmware */
638 } __attribute__((packed
));
640 /* Firmware Station database operations */
641 #define MWL8K_STA_DB_ADD_ENTRY 0
642 #define MWL8K_STA_DB_MODIFY_ENTRY 1
643 #define MWL8K_STA_DB_DEL_ENTRY 2
644 #define MWL8K_STA_DB_FLUSH 3
646 /* Peer Entry flags - used to define the type of the peer node */
647 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
649 #define MWL8K_IEEE_LEGACY_DATA_RATES 12
650 #define MWL8K_MCS_BITMAP_SIZE 16
652 struct peer_capability_info
{
653 /* Peer type - AP vs. STA. */
656 /* Basic 802.11 capabilities from assoc resp. */
659 /* Set if peer supports 802.11n high throughput (HT). */
662 /* Valid if HT is supported. */
664 __u8 extended_ht_caps
;
665 struct ewc_ht_info ewc_info
;
667 /* Legacy rate table. Intersection of our rates and peer rates. */
668 __u8 legacy_rates
[MWL8K_IEEE_LEGACY_DATA_RATES
];
670 /* HT rate table. Intersection of our rates and peer rates. */
671 __u8 ht_rates
[MWL8K_MCS_BITMAP_SIZE
];
674 /* If set, interoperability mode, no proprietary extensions. */
678 __le16 amsdu_enabled
;
679 } __attribute__((packed
));
681 /* Inline functions to manipulate QoS field in data descriptor. */
682 static inline u16
mwl8k_qos_setbit_eosp(u16 qos
)
684 u16 val_mask
= 1 << 4;
686 /* End of Service Period Bit 4 */
687 return qos
| val_mask
;
690 static inline u16
mwl8k_qos_setbit_ack(u16 qos
, u8 ack_policy
)
694 u16 qos_mask
= ~(val_mask
<< shift
);
696 /* Ack Policy Bit 5-6 */
697 return (qos
& qos_mask
) | ((ack_policy
& val_mask
) << shift
);
700 static inline u16
mwl8k_qos_setbit_amsdu(u16 qos
)
702 u16 val_mask
= 1 << 7;
704 /* AMSDU present Bit 7 */
705 return qos
| val_mask
;
708 static inline u16
mwl8k_qos_setbit_qlen(u16 qos
, u8 len
)
712 u16 qos_mask
= ~(val_mask
<< shift
);
714 /* Queue Length Bits 8-15 */
715 return (qos
& qos_mask
) | ((len
& val_mask
) << shift
);
718 /* DMA header used by firmware and hardware. */
719 struct mwl8k_dma_data
{
721 struct ieee80211_hdr wh
;
722 } __attribute__((packed
));
724 /* Routines to add/remove DMA header from skb. */
725 static inline int mwl8k_remove_dma_header(struct sk_buff
*skb
)
727 struct mwl8k_dma_data
*tr
= (struct mwl8k_dma_data
*)(skb
->data
);
728 void *dst
, *src
= &tr
->wh
;
729 __le16 fc
= tr
->wh
.frame_control
;
730 int hdrlen
= ieee80211_hdrlen(fc
);
731 u16 space
= sizeof(struct mwl8k_dma_data
) - hdrlen
;
733 dst
= (void *)tr
+ space
;
735 memmove(dst
, src
, hdrlen
);
736 skb_pull(skb
, space
);
742 static inline struct sk_buff
*mwl8k_add_dma_header(struct sk_buff
*skb
)
744 struct ieee80211_hdr
*wh
;
746 struct mwl8k_dma_data
*tr
;
748 wh
= (struct ieee80211_hdr
*)skb
->data
;
749 hdrlen
= ieee80211_hdrlen(wh
->frame_control
);
753 * Copy up/down the 802.11 header; the firmware requires
754 * we present a 2-byte payload length followed by a
755 * 4-address header (w/o QoS), followed (optionally) by
756 * any WEP/ExtIV header (but only filled in for CCMP).
758 if (hdrlen
!= sizeof(struct mwl8k_dma_data
))
759 skb_push(skb
, sizeof(struct mwl8k_dma_data
) - hdrlen
);
761 tr
= (struct mwl8k_dma_data
*)skb
->data
;
763 memmove(&tr
->wh
, wh
, hdrlen
);
766 memset(tr
->wh
.addr4
, 0, ETH_ALEN
);
769 * Firmware length is the length of the fully formed "802.11
770 * payload". That is, everything except for the 802.11 header.
771 * This includes all crypto material including the MIC.
773 tr
->fwlen
= cpu_to_le16(pktlen
- hdrlen
);
782 #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02
784 struct mwl8k_rx_desc
{
788 __le32 pkt_phys_addr
;
789 __le32 next_rx_desc_phys_addr
;
799 } __attribute__((packed
));
801 #define MWL8K_RX_DESCS 256
802 #define MWL8K_RX_MAXSZ 3800
804 static int mwl8k_rxq_init(struct ieee80211_hw
*hw
, int index
)
806 struct mwl8k_priv
*priv
= hw
->priv
;
807 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
811 rxq
->rx_desc_count
= 0;
815 size
= MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
);
818 pci_alloc_consistent(priv
->pdev
, size
, &rxq
->rx_desc_dma
);
819 if (rxq
->rx_desc_area
== NULL
) {
820 printk(KERN_ERR
"%s: failed to alloc RX descriptors\n",
824 memset(rxq
->rx_desc_area
, 0, size
);
826 rxq
->rx_skb
= kmalloc(MWL8K_RX_DESCS
*
827 sizeof(*rxq
->rx_skb
), GFP_KERNEL
);
828 if (rxq
->rx_skb
== NULL
) {
829 printk(KERN_ERR
"%s: failed to alloc RX skbuff list\n",
831 pci_free_consistent(priv
->pdev
, size
,
832 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
835 memset(rxq
->rx_skb
, 0, MWL8K_RX_DESCS
* sizeof(*rxq
->rx_skb
));
837 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
838 struct mwl8k_rx_desc
*rx_desc
;
841 rx_desc
= rxq
->rx_desc_area
+ i
;
842 nexti
= (i
+ 1) % MWL8K_RX_DESCS
;
844 rx_desc
->next_rx_desc_phys_addr
=
845 cpu_to_le32(rxq
->rx_desc_dma
846 + nexti
* sizeof(*rx_desc
));
847 rx_desc
->rx_ctrl
= MWL8K_RX_CTRL_OWNED_BY_HOST
;
853 static int rxq_refill(struct ieee80211_hw
*hw
, int index
, int limit
)
855 struct mwl8k_priv
*priv
= hw
->priv
;
856 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
860 while (rxq
->rx_desc_count
< MWL8K_RX_DESCS
&& limit
--) {
864 skb
= dev_alloc_skb(MWL8K_RX_MAXSZ
);
868 rxq
->rx_desc_count
++;
871 rxq
->rx_tail
= (rx
+ 1) % MWL8K_RX_DESCS
;
873 rxq
->rx_desc_area
[rx
].pkt_phys_addr
=
874 cpu_to_le32(pci_map_single(priv
->pdev
, skb
->data
,
875 MWL8K_RX_MAXSZ
, DMA_FROM_DEVICE
));
877 rxq
->rx_desc_area
[rx
].pkt_len
= cpu_to_le16(MWL8K_RX_MAXSZ
);
878 rxq
->rx_skb
[rx
] = skb
;
880 rxq
->rx_desc_area
[rx
].rx_ctrl
= 0;
888 /* Must be called only when the card's reception is completely halted */
889 static void mwl8k_rxq_deinit(struct ieee80211_hw
*hw
, int index
)
891 struct mwl8k_priv
*priv
= hw
->priv
;
892 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
895 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
896 if (rxq
->rx_skb
[i
] != NULL
) {
899 addr
= le32_to_cpu(rxq
->rx_desc_area
[i
].pkt_phys_addr
);
900 pci_unmap_single(priv
->pdev
, addr
, MWL8K_RX_MAXSZ
,
902 kfree_skb(rxq
->rx_skb
[i
]);
903 rxq
->rx_skb
[i
] = NULL
;
910 pci_free_consistent(priv
->pdev
,
911 MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
),
912 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
913 rxq
->rx_desc_area
= NULL
;
918 * Scan a list of BSSIDs to process for finalize join.
919 * Allows for extension to process multiple BSSIDs.
922 mwl8k_capture_bssid(struct mwl8k_priv
*priv
, struct ieee80211_hdr
*wh
)
924 return priv
->capture_beacon
&&
925 ieee80211_is_beacon(wh
->frame_control
) &&
926 !compare_ether_addr(wh
->addr3
, priv
->capture_bssid
);
929 static inline void mwl8k_save_beacon(struct mwl8k_priv
*priv
,
932 priv
->capture_beacon
= false;
933 memset(priv
->capture_bssid
, 0, ETH_ALEN
);
936 * Use GFP_ATOMIC as rxq_process is called from
937 * the primary interrupt handler, memory allocation call
940 priv
->beacon_skb
= skb_copy(skb
, GFP_ATOMIC
);
941 if (priv
->beacon_skb
!= NULL
)
942 queue_work(priv
->config_wq
,
943 &priv
->finalize_join_worker
);
946 static int rxq_process(struct ieee80211_hw
*hw
, int index
, int limit
)
948 struct mwl8k_priv
*priv
= hw
->priv
;
949 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
953 while (rxq
->rx_desc_count
&& limit
--) {
954 struct mwl8k_rx_desc
*rx_desc
;
956 struct ieee80211_rx_status status
;
958 struct ieee80211_hdr
*wh
;
960 rx_desc
= rxq
->rx_desc_area
+ rxq
->rx_head
;
961 if (!(rx_desc
->rx_ctrl
& MWL8K_RX_CTRL_OWNED_BY_HOST
))
965 skb
= rxq
->rx_skb
[rxq
->rx_head
];
968 rxq
->rx_skb
[rxq
->rx_head
] = NULL
;
970 rxq
->rx_head
= (rxq
->rx_head
+ 1) % MWL8K_RX_DESCS
;
971 rxq
->rx_desc_count
--;
973 addr
= le32_to_cpu(rx_desc
->pkt_phys_addr
);
974 pci_unmap_single(priv
->pdev
, addr
,
975 MWL8K_RX_MAXSZ
, PCI_DMA_FROMDEVICE
);
977 skb_put(skb
, le16_to_cpu(rx_desc
->pkt_len
));
978 if (mwl8k_remove_dma_header(skb
)) {
983 wh
= (struct ieee80211_hdr
*)skb
->data
;
986 * Check for pending join operation. save a copy of
987 * the beacon and schedule a tasklet to send finalize
988 * join command to the firmware.
990 if (mwl8k_capture_bssid(priv
, wh
))
991 mwl8k_save_beacon(priv
, skb
);
993 memset(&status
, 0, sizeof(status
));
995 status
.signal
= -rx_desc
->rssi
;
996 status
.noise
= -rx_desc
->noise_level
;
997 status
.qual
= rx_desc
->link_quality
;
1001 status
.band
= IEEE80211_BAND_2GHZ
;
1002 status
.freq
= ieee80211_channel_to_frequency(rx_desc
->channel
);
1003 memcpy(IEEE80211_SKB_RXCB(skb
), &status
, sizeof(status
));
1004 ieee80211_rx_irqsafe(hw
, skb
);
1014 * Packet transmission.
1017 /* Transmit queue assignment. */
1019 MWL8K_WME_AC_BK
= 0, /* background access */
1020 MWL8K_WME_AC_BE
= 1, /* best effort access */
1021 MWL8K_WME_AC_VI
= 2, /* video access */
1022 MWL8K_WME_AC_VO
= 3, /* voice access */
1025 /* Transmit packet ACK policy */
1026 #define MWL8K_TXD_ACK_POLICY_NORMAL 0
1027 #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3
1029 #define GET_TXQ(_ac) (\
1030 ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \
1031 ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \
1032 ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \
1035 #define MWL8K_TXD_STATUS_OK 0x00000001
1036 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1037 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1038 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1039 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1041 struct mwl8k_tx_desc
{
1046 __le32 pkt_phys_addr
;
1048 __u8 dest_MAC_addr
[ETH_ALEN
];
1049 __le32 next_tx_desc_phys_addr
;
1054 } __attribute__((packed
));
1056 #define MWL8K_TX_DESCS 128
1058 static int mwl8k_txq_init(struct ieee80211_hw
*hw
, int index
)
1060 struct mwl8k_priv
*priv
= hw
->priv
;
1061 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1065 memset(&txq
->tx_stats
, 0, sizeof(struct ieee80211_tx_queue_stats
));
1066 txq
->tx_stats
.limit
= MWL8K_TX_DESCS
;
1070 size
= MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
);
1073 pci_alloc_consistent(priv
->pdev
, size
, &txq
->tx_desc_dma
);
1074 if (txq
->tx_desc_area
== NULL
) {
1075 printk(KERN_ERR
"%s: failed to alloc TX descriptors\n",
1079 memset(txq
->tx_desc_area
, 0, size
);
1081 txq
->tx_skb
= kmalloc(MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
),
1083 if (txq
->tx_skb
== NULL
) {
1084 printk(KERN_ERR
"%s: failed to alloc TX skbuff list\n",
1086 pci_free_consistent(priv
->pdev
, size
,
1087 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1090 memset(txq
->tx_skb
, 0, MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
));
1092 for (i
= 0; i
< MWL8K_TX_DESCS
; i
++) {
1093 struct mwl8k_tx_desc
*tx_desc
;
1096 tx_desc
= txq
->tx_desc_area
+ i
;
1097 nexti
= (i
+ 1) % MWL8K_TX_DESCS
;
1099 tx_desc
->status
= 0;
1100 tx_desc
->next_tx_desc_phys_addr
=
1101 cpu_to_le32(txq
->tx_desc_dma
+
1102 nexti
* sizeof(*tx_desc
));
1108 static inline void mwl8k_tx_start(struct mwl8k_priv
*priv
)
1110 iowrite32(MWL8K_H2A_INT_PPA_READY
,
1111 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1112 iowrite32(MWL8K_H2A_INT_DUMMY
,
1113 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1114 ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
);
1117 static inline int mwl8k_txq_busy(struct mwl8k_priv
*priv
)
1119 return priv
->pending_tx_pkts
;
1122 struct mwl8k_txq_info
{
1131 static int mwl8k_scan_tx_ring(struct mwl8k_priv
*priv
,
1132 struct mwl8k_txq_info txinfo
[],
1135 int count
, desc
, status
;
1136 struct mwl8k_tx_queue
*txq
;
1137 struct mwl8k_tx_desc
*tx_desc
;
1140 memset(txinfo
, 0, num_queues
* sizeof(struct mwl8k_txq_info
));
1141 spin_lock_bh(&priv
->tx_lock
);
1142 for (count
= 0; count
< num_queues
; count
++) {
1143 txq
= priv
->txq
+ count
;
1144 txinfo
[count
].len
= txq
->tx_stats
.len
;
1145 txinfo
[count
].head
= txq
->tx_head
;
1146 txinfo
[count
].tail
= txq
->tx_tail
;
1147 for (desc
= 0; desc
< MWL8K_TX_DESCS
; desc
++) {
1148 tx_desc
= txq
->tx_desc_area
+ desc
;
1149 status
= le32_to_cpu(tx_desc
->status
);
1151 if (status
& MWL8K_TXD_STATUS_FW_OWNED
)
1152 txinfo
[count
].fw_owned
++;
1154 txinfo
[count
].drv_owned
++;
1156 if (tx_desc
->pkt_len
== 0)
1157 txinfo
[count
].unused
++;
1160 spin_unlock_bh(&priv
->tx_lock
);
1165 static int mwl8k_tx_wait_empty(struct ieee80211_hw
*hw
, u32 delay_ms
)
1167 struct mwl8k_priv
*priv
= hw
->priv
;
1168 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1170 unsigned long timeout
;
1174 if (priv
->tx_wait
!= NULL
)
1175 printk(KERN_ERR
"WARNING Previous TXWaitEmpty instance\n");
1177 spin_lock_bh(&priv
->tx_lock
);
1178 count
= mwl8k_txq_busy(priv
);
1180 priv
->tx_wait
= &cmd_wait
;
1182 mwl8k_tx_start(priv
);
1184 spin_unlock_bh(&priv
->tx_lock
);
1187 struct mwl8k_txq_info txinfo
[4];
1191 timeout
= wait_for_completion_timeout(&cmd_wait
,
1192 msecs_to_jiffies(delay_ms
));
1196 spin_lock_bh(&priv
->tx_lock
);
1197 priv
->tx_wait
= NULL
;
1198 newcount
= mwl8k_txq_busy(priv
);
1199 spin_unlock_bh(&priv
->tx_lock
);
1201 printk(KERN_ERR
"%s(%u) TIMEDOUT:%ums Pend:%u-->%u\n",
1202 __func__
, __LINE__
, delay_ms
, count
, newcount
);
1204 mwl8k_scan_tx_ring(priv
, txinfo
, 4);
1205 for (index
= 0; index
< 4; index
++)
1207 "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n",
1212 txinfo
[index
].fw_owned
,
1213 txinfo
[index
].drv_owned
,
1214 txinfo
[index
].unused
);
1222 #define MWL8K_TXD_SUCCESS(status) \
1223 ((status) & (MWL8K_TXD_STATUS_OK | \
1224 MWL8K_TXD_STATUS_OK_RETRY | \
1225 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1227 static void mwl8k_txq_reclaim(struct ieee80211_hw
*hw
, int index
, int force
)
1229 struct mwl8k_priv
*priv
= hw
->priv
;
1230 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1233 while (txq
->tx_stats
.len
> 0) {
1236 struct mwl8k_tx_desc
*tx_desc
;
1239 struct sk_buff
*skb
;
1240 struct ieee80211_tx_info
*info
;
1245 tx_desc
= txq
->tx_desc_area
+ tx
;
1247 status
= le32_to_cpu(tx_desc
->status
);
1249 if (status
& MWL8K_TXD_STATUS_FW_OWNED
) {
1253 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED
);
1256 txq
->tx_head
= (tx
+ 1) % MWL8K_TX_DESCS
;
1257 BUG_ON(txq
->tx_stats
.len
== 0);
1258 txq
->tx_stats
.len
--;
1259 priv
->pending_tx_pkts
--;
1261 addr
= le32_to_cpu(tx_desc
->pkt_phys_addr
);
1262 size
= le16_to_cpu(tx_desc
->pkt_len
);
1263 skb
= txq
->tx_skb
[tx
].skb
;
1264 txq
->tx_skb
[tx
].skb
= NULL
;
1266 BUG_ON(skb
== NULL
);
1267 pci_unmap_single(priv
->pdev
, addr
, size
, PCI_DMA_TODEVICE
);
1269 rc
= mwl8k_remove_dma_header(skb
);
1271 /* Mark descriptor as unused */
1272 tx_desc
->pkt_phys_addr
= 0;
1273 tx_desc
->pkt_len
= 0;
1275 if (txq
->tx_skb
[tx
].clone
) {
1276 /* Replace with original skb
1277 * before returning to stack
1278 * as buffer has been cloned
1281 skb
= txq
->tx_skb
[tx
].clone
;
1282 txq
->tx_skb
[tx
].clone
= NULL
;
1286 /* Something has gone wrong here.
1287 * Failed to remove DMA header.
1288 * Print error message and drop packet.
1290 printk(KERN_ERR
"%s: Error removing DMA header from "
1291 "tx skb 0x%p.\n", priv
->name
, skb
);
1297 info
= IEEE80211_SKB_CB(skb
);
1298 ieee80211_tx_info_clear_status(info
);
1299 if (MWL8K_TXD_SUCCESS(status
))
1300 info
->flags
|= IEEE80211_TX_STAT_ACK
;
1302 ieee80211_tx_status_irqsafe(hw
, skb
);
1304 wake
= !priv
->inconfig
&& priv
->radio_on
;
1308 ieee80211_wake_queue(hw
, index
);
1311 /* must be called only when the card's transmit is completely halted */
1312 static void mwl8k_txq_deinit(struct ieee80211_hw
*hw
, int index
)
1314 struct mwl8k_priv
*priv
= hw
->priv
;
1315 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1317 mwl8k_txq_reclaim(hw
, index
, 1);
1322 pci_free_consistent(priv
->pdev
,
1323 MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
),
1324 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1325 txq
->tx_desc_area
= NULL
;
1329 mwl8k_txq_xmit(struct ieee80211_hw
*hw
, int index
, struct sk_buff
*skb
)
1331 struct mwl8k_priv
*priv
= hw
->priv
;
1332 struct ieee80211_tx_info
*tx_info
;
1333 struct ieee80211_hdr
*wh
;
1334 struct mwl8k_tx_queue
*txq
;
1335 struct mwl8k_tx_desc
*tx
;
1336 struct mwl8k_dma_data
*tr
;
1337 struct mwl8k_vif
*mwl8k_vif
;
1338 struct sk_buff
*org_skb
= skb
;
1341 bool qosframe
= false, ampduframe
= false;
1342 bool mcframe
= false, eapolframe
= false;
1343 bool amsduframe
= false;
1346 txq
= priv
->txq
+ index
;
1347 tx
= txq
->tx_desc_area
+ txq
->tx_tail
;
1349 BUG_ON(txq
->tx_skb
[txq
->tx_tail
].skb
!= NULL
);
1352 * Append HW DMA header to start of packet. Drop packet if
1353 * there is not enough space or a failure to unshare/unclone
1356 skb
= mwl8k_add_dma_header(skb
);
1359 printk(KERN_DEBUG
"%s: failed to prepend HW DMA "
1360 "header, dropping TX frame.\n", priv
->name
);
1361 dev_kfree_skb(org_skb
);
1362 return NETDEV_TX_OK
;
1365 tx_info
= IEEE80211_SKB_CB(skb
);
1366 mwl8k_vif
= MWL8K_VIF(tx_info
->control
.vif
);
1367 tr
= (struct mwl8k_dma_data
*)skb
->data
;
1369 fc
= wh
->frame_control
;
1370 qosframe
= ieee80211_is_data_qos(fc
);
1371 mcframe
= is_multicast_ether_addr(wh
->addr1
);
1372 ampduframe
= !!(tx_info
->flags
& IEEE80211_TX_CTL_AMPDU
);
1374 if (tx_info
->flags
& IEEE80211_TX_CTL_ASSIGN_SEQ
) {
1375 u16 seqno
= mwl8k_vif
->seqno
;
1376 wh
->seq_ctrl
&= cpu_to_le16(IEEE80211_SCTL_FRAG
);
1377 wh
->seq_ctrl
|= cpu_to_le16(seqno
<< 4);
1378 mwl8k_vif
->seqno
= seqno
++ % 4096;
1382 qos
= le16_to_cpu(*((__le16
*)ieee80211_get_qos_ctl(wh
)));
1384 dma
= pci_map_single(priv
->pdev
, skb
->data
,
1385 skb
->len
, PCI_DMA_TODEVICE
);
1387 if (pci_dma_mapping_error(priv
->pdev
, dma
)) {
1388 printk(KERN_DEBUG
"%s: failed to dma map skb, "
1389 "dropping TX frame.\n", priv
->name
);
1391 if (org_skb
!= NULL
)
1392 dev_kfree_skb(org_skb
);
1395 return NETDEV_TX_OK
;
1398 /* Set desc header, cpu bit order. */
1401 tx
->tx_priority
= index
;
1402 tx
->qos_control
= 0;
1404 tx
->peer_id
= mwl8k_vif
->peer_id
;
1406 amsduframe
= !!(qos
& IEEE80211_QOS_CONTROL_A_MSDU_PRESENT
);
1408 /* Setup firmware control bit fields for each frame type. */
1409 if (ieee80211_is_mgmt(fc
) || ieee80211_is_ctl(fc
)) {
1411 qos
= mwl8k_qos_setbit_eosp(qos
);
1412 /* Set Queue size to unspecified */
1413 qos
= mwl8k_qos_setbit_qlen(qos
, 0xff);
1414 } else if (ieee80211_is_data(fc
)) {
1417 tx
->status
|= MWL8K_TXD_STATUS_MULTICAST_TX
;
1420 * Tell firmware to not send EAPOL pkts in an
1421 * aggregate. Verify against mac80211 tx path. If
1422 * stack turns off AMPDU for an EAPOL frame this
1423 * check will be removed.
1426 qos
= mwl8k_qos_setbit_ack(qos
,
1427 MWL8K_TXD_ACK_POLICY_NORMAL
);
1429 /* Send pkt in an aggregate if AMPDU frame. */
1431 qos
= mwl8k_qos_setbit_ack(qos
,
1432 MWL8K_TXD_ACK_POLICY_BLOCKACK
);
1434 qos
= mwl8k_qos_setbit_ack(qos
,
1435 MWL8K_TXD_ACK_POLICY_NORMAL
);
1438 qos
= mwl8k_qos_setbit_amsdu(qos
);
1442 /* Convert to little endian */
1443 tx
->qos_control
= cpu_to_le16(qos
);
1444 tx
->status
= cpu_to_le32(tx
->status
);
1445 tx
->pkt_phys_addr
= cpu_to_le32(dma
);
1446 tx
->pkt_len
= cpu_to_le16(skb
->len
);
1448 txq
->tx_skb
[txq
->tx_tail
].skb
= skb
;
1449 txq
->tx_skb
[txq
->tx_tail
].clone
=
1450 skb
== org_skb
? NULL
: org_skb
;
1452 spin_lock_bh(&priv
->tx_lock
);
1454 tx
->status
= cpu_to_le32(MWL8K_TXD_STATUS_OK
|
1455 MWL8K_TXD_STATUS_FW_OWNED
);
1457 txq
->tx_stats
.len
++;
1458 priv
->pending_tx_pkts
++;
1459 txq
->tx_stats
.count
++;
1462 if (txq
->tx_tail
== MWL8K_TX_DESCS
)
1464 if (txq
->tx_head
== txq
->tx_tail
)
1465 ieee80211_stop_queue(hw
, index
);
1467 if (priv
->inconfig
) {
1469 * Silently queue packet when we are in the middle of
1470 * a config cycle. Notify firmware only if we are
1471 * waiting for TXQs to empty. If a packet is sent
1472 * before .config() is complete, perhaps it is better
1473 * to drop the packet, as the channel is being changed
1474 * and the packet will end up on the wrong channel.
1476 printk(KERN_ERR
"%s(): WARNING TX activity while "
1477 "in config\n", __func__
);
1479 if (priv
->tx_wait
!= NULL
)
1480 mwl8k_tx_start(priv
);
1482 mwl8k_tx_start(priv
);
1484 spin_unlock_bh(&priv
->tx_lock
);
1486 return NETDEV_TX_OK
;
1491 * Command processing.
1494 /* Timeout firmware commands after 2000ms */
1495 #define MWL8K_CMD_TIMEOUT_MS 2000
1497 static int mwl8k_post_cmd(struct ieee80211_hw
*hw
, struct mwl8k_cmd_pkt
*cmd
)
1499 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1500 struct mwl8k_priv
*priv
= hw
->priv
;
1501 void __iomem
*regs
= priv
->regs
;
1502 dma_addr_t dma_addr
;
1503 unsigned int dma_size
;
1505 unsigned long timeout
= 0;
1508 cmd
->result
= 0xFFFF;
1509 dma_size
= le16_to_cpu(cmd
->length
);
1510 dma_addr
= pci_map_single(priv
->pdev
, cmd
, dma_size
,
1511 PCI_DMA_BIDIRECTIONAL
);
1512 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
1515 if (priv
->hostcmd_wait
!= NULL
)
1516 printk(KERN_ERR
"WARNING host command in progress\n");
1518 spin_lock_irq(&priv
->fw_lock
);
1519 priv
->hostcmd_wait
= &cmd_wait
;
1520 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
1521 iowrite32(MWL8K_H2A_INT_DOORBELL
,
1522 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1523 iowrite32(MWL8K_H2A_INT_DUMMY
,
1524 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1525 spin_unlock_irq(&priv
->fw_lock
);
1527 timeout
= wait_for_completion_timeout(&cmd_wait
,
1528 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS
));
1530 pci_unmap_single(priv
->pdev
, dma_addr
, dma_size
,
1531 PCI_DMA_BIDIRECTIONAL
);
1534 spin_lock_irq(&priv
->fw_lock
);
1535 priv
->hostcmd_wait
= NULL
;
1536 spin_unlock_irq(&priv
->fw_lock
);
1537 printk(KERN_ERR
"%s: Command %s timeout after %u ms\n",
1539 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1540 MWL8K_CMD_TIMEOUT_MS
);
1543 rc
= cmd
->result
? -EINVAL
: 0;
1545 printk(KERN_ERR
"%s: Command %s error 0x%x\n",
1547 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1557 struct mwl8k_cmd_get_hw_spec
{
1558 struct mwl8k_cmd_pkt header
;
1560 __u8 host_interface
;
1562 __u8 perm_addr
[ETH_ALEN
];
1567 __u8 mcs_bitmap
[16];
1568 __le32 rx_queue_ptr
;
1569 __le32 num_tx_queues
;
1570 __le32 tx_queue_ptrs
[MWL8K_TX_QUEUES
];
1572 __le32 num_tx_desc_per_queue
;
1573 __le32 total_rx_desc
;
1574 } __attribute__((packed
));
1576 static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw
*hw
)
1578 struct mwl8k_priv
*priv
= hw
->priv
;
1579 struct mwl8k_cmd_get_hw_spec
*cmd
;
1583 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1587 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_HW_SPEC
);
1588 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1590 memset(cmd
->perm_addr
, 0xff, sizeof(cmd
->perm_addr
));
1591 cmd
->ps_cookie
= cpu_to_le32(priv
->cookie_dma
);
1592 cmd
->rx_queue_ptr
= cpu_to_le32(priv
->rxq
[0].rx_desc_dma
);
1593 cmd
->num_tx_queues
= cpu_to_le32(MWL8K_TX_QUEUES
);
1594 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
1595 cmd
->tx_queue_ptrs
[i
] = cpu_to_le32(priv
->txq
[i
].tx_desc_dma
);
1596 cmd
->num_tx_desc_per_queue
= cpu_to_le32(MWL8K_TX_DESCS
);
1597 cmd
->total_rx_desc
= cpu_to_le32(MWL8K_RX_DESCS
);
1599 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1602 SET_IEEE80211_PERM_ADDR(hw
, cmd
->perm_addr
);
1603 priv
->num_mcaddrs
= le16_to_cpu(cmd
->num_mcaddrs
);
1604 priv
->fw_rev
= le32_to_cpu(cmd
->fw_rev
);
1605 priv
->hw_rev
= cmd
->hw_rev
;
1613 * CMD_MAC_MULTICAST_ADR.
1615 struct mwl8k_cmd_mac_multicast_adr
{
1616 struct mwl8k_cmd_pkt header
;
1619 __u8 addr
[0][ETH_ALEN
];
1622 #define MWL8K_ENABLE_RX_MULTICAST 0x000F
1624 static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw
*hw
,
1626 struct dev_addr_list
*mclist
)
1628 struct mwl8k_cmd_mac_multicast_adr
*cmd
;
1631 int size
= sizeof(*cmd
) + mc_count
* ETH_ALEN
;
1633 cmd
= kzalloc(size
, GFP_KERNEL
);
1637 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR
);
1638 cmd
->header
.length
= cpu_to_le16(size
);
1639 cmd
->action
= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST
);
1640 cmd
->numaddr
= cpu_to_le16(mc_count
);
1642 while (index
< mc_count
&& mclist
) {
1643 if (mclist
->da_addrlen
!= ETH_ALEN
) {
1645 goto mwl8k_cmd_mac_multicast_adr_exit
;
1647 memcpy(cmd
->addr
[index
++], mclist
->da_addr
, ETH_ALEN
);
1648 mclist
= mclist
->next
;
1651 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1653 mwl8k_cmd_mac_multicast_adr_exit
:
1659 * CMD_802_11_GET_STAT.
1661 struct mwl8k_cmd_802_11_get_stat
{
1662 struct mwl8k_cmd_pkt header
;
1665 } __attribute__((packed
));
1667 #define MWL8K_STAT_ACK_FAILURE 9
1668 #define MWL8K_STAT_RTS_FAILURE 12
1669 #define MWL8K_STAT_FCS_ERROR 24
1670 #define MWL8K_STAT_RTS_SUCCESS 11
1672 static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw
*hw
,
1673 struct ieee80211_low_level_stats
*stats
)
1675 struct mwl8k_cmd_802_11_get_stat
*cmd
;
1678 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1682 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_STAT
);
1683 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1684 cmd
->action
= cpu_to_le16(MWL8K_CMD_GET
);
1686 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1688 stats
->dot11ACKFailureCount
=
1689 le32_to_cpu(cmd
->stats
[MWL8K_STAT_ACK_FAILURE
]);
1690 stats
->dot11RTSFailureCount
=
1691 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_FAILURE
]);
1692 stats
->dot11FCSErrorCount
=
1693 le32_to_cpu(cmd
->stats
[MWL8K_STAT_FCS_ERROR
]);
1694 stats
->dot11RTSSuccessCount
=
1695 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_SUCCESS
]);
1703 * CMD_802_11_RADIO_CONTROL.
1705 struct mwl8k_cmd_802_11_radio_control
{
1706 struct mwl8k_cmd_pkt header
;
1710 } __attribute__((packed
));
1713 mwl8k_cmd_802_11_radio_control(struct ieee80211_hw
*hw
, bool enable
, bool force
)
1715 struct mwl8k_priv
*priv
= hw
->priv
;
1716 struct mwl8k_cmd_802_11_radio_control
*cmd
;
1719 if (enable
== priv
->radio_on
&& !force
)
1722 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1726 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RADIO_CONTROL
);
1727 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1728 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1729 cmd
->control
= cpu_to_le16(priv
->radio_short_preamble
? 3 : 1);
1730 cmd
->radio_on
= cpu_to_le16(enable
? 0x0001 : 0x0000);
1732 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1736 priv
->radio_on
= enable
;
1741 static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw
*hw
)
1743 return mwl8k_cmd_802_11_radio_control(hw
, 0, 0);
1746 static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw
*hw
)
1748 return mwl8k_cmd_802_11_radio_control(hw
, 1, 0);
1752 mwl8k_set_radio_preamble(struct ieee80211_hw
*hw
, bool short_preamble
)
1754 struct mwl8k_priv
*priv
;
1756 if (hw
== NULL
|| hw
->priv
== NULL
)
1760 priv
->radio_short_preamble
= short_preamble
;
1762 return mwl8k_cmd_802_11_radio_control(hw
, 1, 1);
1766 * CMD_802_11_RF_TX_POWER.
1768 #define MWL8K_TX_POWER_LEVEL_TOTAL 8
1770 struct mwl8k_cmd_802_11_rf_tx_power
{
1771 struct mwl8k_cmd_pkt header
;
1773 __le16 support_level
;
1774 __le16 current_level
;
1776 __le16 power_level_list
[MWL8K_TX_POWER_LEVEL_TOTAL
];
1777 } __attribute__((packed
));
1779 static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw
*hw
, int dBm
)
1781 struct mwl8k_cmd_802_11_rf_tx_power
*cmd
;
1784 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1788 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RF_TX_POWER
);
1789 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1790 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1791 cmd
->support_level
= cpu_to_le16(dBm
);
1793 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1802 struct mwl8k_cmd_set_pre_scan
{
1803 struct mwl8k_cmd_pkt header
;
1804 } __attribute__((packed
));
1806 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw
*hw
)
1808 struct mwl8k_cmd_set_pre_scan
*cmd
;
1811 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1815 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN
);
1816 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1818 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1825 * CMD_SET_POST_SCAN.
1827 struct mwl8k_cmd_set_post_scan
{
1828 struct mwl8k_cmd_pkt header
;
1830 __u8 bssid
[ETH_ALEN
];
1831 } __attribute__((packed
));
1834 mwl8k_cmd_set_post_scan(struct ieee80211_hw
*hw
, __u8
*mac
)
1836 struct mwl8k_cmd_set_post_scan
*cmd
;
1839 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1843 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_POST_SCAN
);
1844 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1846 memcpy(cmd
->bssid
, mac
, ETH_ALEN
);
1848 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1855 * CMD_SET_RF_CHANNEL.
1857 struct mwl8k_cmd_set_rf_channel
{
1858 struct mwl8k_cmd_pkt header
;
1860 __u8 current_channel
;
1861 __le32 channel_flags
;
1862 } __attribute__((packed
));
1864 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw
*hw
,
1865 struct ieee80211_channel
*channel
)
1867 struct mwl8k_cmd_set_rf_channel
*cmd
;
1870 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1874 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL
);
1875 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1876 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1877 cmd
->current_channel
= channel
->hw_value
;
1878 if (channel
->band
== IEEE80211_BAND_2GHZ
)
1879 cmd
->channel_flags
= cpu_to_le32(0x00000081);
1881 cmd
->channel_flags
= cpu_to_le32(0x00000000);
1883 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1892 struct mwl8k_cmd_set_slot
{
1893 struct mwl8k_cmd_pkt header
;
1896 } __attribute__((packed
));
1898 static int mwl8k_cmd_set_slot(struct ieee80211_hw
*hw
, int slot_time
)
1900 struct mwl8k_cmd_set_slot
*cmd
;
1903 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1907 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_SLOT
);
1908 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1909 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1910 cmd
->short_slot
= slot_time
== MWL8K_SHORT_SLOTTIME
? 1 : 0;
1912 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1921 struct mwl8k_cmd_mimo_config
{
1922 struct mwl8k_cmd_pkt header
;
1924 __u8 rx_antenna_map
;
1925 __u8 tx_antenna_map
;
1926 } __attribute__((packed
));
1928 static int mwl8k_cmd_mimo_config(struct ieee80211_hw
*hw
, __u8 rx
, __u8 tx
)
1930 struct mwl8k_cmd_mimo_config
*cmd
;
1933 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1937 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MIMO_CONFIG
);
1938 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1939 cmd
->action
= cpu_to_le32((u32
)MWL8K_CMD_SET
);
1940 cmd
->rx_antenna_map
= rx
;
1941 cmd
->tx_antenna_map
= tx
;
1943 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1950 * CMD_ENABLE_SNIFFER.
1952 struct mwl8k_cmd_enable_sniffer
{
1953 struct mwl8k_cmd_pkt header
;
1955 } __attribute__((packed
));
1957 static int mwl8k_enable_sniffer(struct ieee80211_hw
*hw
, bool enable
)
1959 struct mwl8k_cmd_enable_sniffer
*cmd
;
1962 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1966 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER
);
1967 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1968 cmd
->action
= cpu_to_le32(!!enable
);
1970 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1977 * CMD_SET_RATEADAPT_MODE.
1979 struct mwl8k_cmd_set_rate_adapt_mode
{
1980 struct mwl8k_cmd_pkt header
;
1983 } __attribute__((packed
));
1985 static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw
*hw
, __u16 mode
)
1987 struct mwl8k_cmd_set_rate_adapt_mode
*cmd
;
1990 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1994 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE
);
1995 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1996 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1997 cmd
->mode
= cpu_to_le16(mode
);
1999 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2008 struct mwl8k_cmd_set_wmm
{
2009 struct mwl8k_cmd_pkt header
;
2011 } __attribute__((packed
));
2013 static int mwl8k_set_wmm(struct ieee80211_hw
*hw
, bool enable
)
2015 struct mwl8k_priv
*priv
= hw
->priv
;
2016 struct mwl8k_cmd_set_wmm
*cmd
;
2019 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2023 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_WMM_MODE
);
2024 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2025 cmd
->action
= cpu_to_le16(!!enable
);
2027 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2031 priv
->wmm_enabled
= enable
;
2037 * CMD_SET_RTS_THRESHOLD.
2039 struct mwl8k_cmd_rts_threshold
{
2040 struct mwl8k_cmd_pkt header
;
2043 } __attribute__((packed
));
2045 static int mwl8k_rts_threshold(struct ieee80211_hw
*hw
,
2046 u16 action
, u16
*threshold
)
2048 struct mwl8k_cmd_rts_threshold
*cmd
;
2051 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2055 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD
);
2056 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2057 cmd
->action
= cpu_to_le16(action
);
2058 cmd
->threshold
= cpu_to_le16(*threshold
);
2060 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2067 * CMD_SET_EDCA_PARAMS.
2069 struct mwl8k_cmd_set_edca_params
{
2070 struct mwl8k_cmd_pkt header
;
2072 /* See MWL8K_SET_EDCA_XXX below */
2075 /* TX opportunity in units of 32 us */
2078 /* Log exponent of max contention period: 0...15*/
2081 /* Log exponent of min contention period: 0...15 */
2084 /* Adaptive interframe spacing in units of 32us */
2087 /* TX queue to configure */
2089 } __attribute__((packed
));
2091 #define MWL8K_SET_EDCA_CW 0x01
2092 #define MWL8K_SET_EDCA_TXOP 0x02
2093 #define MWL8K_SET_EDCA_AIFS 0x04
2095 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2096 MWL8K_SET_EDCA_TXOP | \
2097 MWL8K_SET_EDCA_AIFS)
2100 mwl8k_set_edca_params(struct ieee80211_hw
*hw
, __u8 qnum
,
2101 __u16 cw_min
, __u16 cw_max
,
2102 __u8 aifs
, __u16 txop
)
2104 struct mwl8k_cmd_set_edca_params
*cmd
;
2107 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2111 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS
);
2112 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2113 cmd
->action
= cpu_to_le16(MWL8K_SET_EDCA_ALL
);
2114 cmd
->txop
= cpu_to_le16(txop
);
2115 cmd
->log_cw_max
= (u8
)ilog2(cw_max
+ 1);
2116 cmd
->log_cw_min
= (u8
)ilog2(cw_min
+ 1);
2120 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2127 * CMD_FINALIZE_JOIN.
2130 /* FJ beacon buffer size is compiled into the firmware. */
2131 #define MWL8K_FJ_BEACON_MAXLEN 128
2133 struct mwl8k_cmd_finalize_join
{
2134 struct mwl8k_cmd_pkt header
;
2135 __le32 sleep_interval
; /* Number of beacon periods to sleep */
2136 __u8 beacon_data
[MWL8K_FJ_BEACON_MAXLEN
];
2137 } __attribute__((packed
));
2139 static int mwl8k_finalize_join(struct ieee80211_hw
*hw
, void *frame
,
2140 __u16 framelen
, __u16 dtim
)
2142 struct mwl8k_cmd_finalize_join
*cmd
;
2143 struct ieee80211_mgmt
*payload
= frame
;
2151 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2155 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN
);
2156 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2157 cmd
->sleep_interval
= cpu_to_le32(dtim
? dtim
: 1);
2159 hdrlen
= ieee80211_hdrlen(payload
->frame_control
);
2161 payload_len
= framelen
> hdrlen
? framelen
- hdrlen
: 0;
2163 /* XXX TBD Might just have to abort and return an error */
2164 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2165 printk(KERN_ERR
"%s(): WARNING: Incomplete beacon "
2166 "sent to firmware. Sz=%u MAX=%u\n", __func__
,
2167 payload_len
, MWL8K_FJ_BEACON_MAXLEN
);
2169 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2170 payload_len
= MWL8K_FJ_BEACON_MAXLEN
;
2172 if (payload
&& payload_len
)
2173 memcpy(cmd
->beacon_data
, &payload
->u
.beacon
, payload_len
);
2175 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2183 struct mwl8k_cmd_update_sta_db
{
2184 struct mwl8k_cmd_pkt header
;
2186 /* See STADB_ACTION_TYPE */
2189 /* Peer MAC address */
2190 __u8 peer_addr
[ETH_ALEN
];
2194 /* Peer info - valid during add/update. */
2195 struct peer_capability_info peer_info
;
2196 } __attribute__((packed
));
2198 static int mwl8k_cmd_update_sta_db(struct ieee80211_hw
*hw
,
2199 struct ieee80211_vif
*vif
, __u32 action
)
2201 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2202 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2203 struct mwl8k_cmd_update_sta_db
*cmd
;
2204 struct peer_capability_info
*peer_info
;
2205 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2209 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2213 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_UPDATE_STADB
);
2214 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2216 cmd
->action
= cpu_to_le32(action
);
2217 peer_info
= &cmd
->peer_info
;
2218 memcpy(cmd
->peer_addr
, mv_vif
->bssid
, ETH_ALEN
);
2221 case MWL8K_STA_DB_ADD_ENTRY
:
2222 case MWL8K_STA_DB_MODIFY_ENTRY
:
2223 /* Build peer_info block */
2224 peer_info
->peer_type
= MWL8K_PEER_TYPE_ACCESSPOINT
;
2225 peer_info
->basic_caps
= cpu_to_le16(info
->assoc_capability
);
2226 peer_info
->interop
= 1;
2227 peer_info
->amsdu_enabled
= 0;
2229 rates
= peer_info
->legacy_rates
;
2230 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2231 rates
[count
] = bitrates
[count
].hw_value
;
2233 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2235 mv_vif
->peer_id
= peer_info
->station_id
;
2239 case MWL8K_STA_DB_DEL_ENTRY
:
2240 case MWL8K_STA_DB_FLUSH
:
2242 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2244 mv_vif
->peer_id
= 0;
2255 #define MWL8K_RATE_INDEX_MAX_ARRAY 14
2257 #define MWL8K_FRAME_PROT_DISABLED 0x00
2258 #define MWL8K_FRAME_PROT_11G 0x07
2259 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2260 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2262 struct mwl8k_cmd_update_set_aid
{
2263 struct mwl8k_cmd_pkt header
;
2266 /* AP's MAC address (BSSID) */
2267 __u8 bssid
[ETH_ALEN
];
2268 __le16 protection_mode
;
2269 __u8 supp_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2270 } __attribute__((packed
));
2272 static int mwl8k_cmd_set_aid(struct ieee80211_hw
*hw
,
2273 struct ieee80211_vif
*vif
)
2275 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2276 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2277 struct mwl8k_cmd_update_set_aid
*cmd
;
2278 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2283 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2287 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_AID
);
2288 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2289 cmd
->aid
= cpu_to_le16(info
->aid
);
2291 memcpy(cmd
->bssid
, mv_vif
->bssid
, ETH_ALEN
);
2293 if (info
->use_cts_prot
) {
2294 prot_mode
= MWL8K_FRAME_PROT_11G
;
2296 switch (info
->ht_operation_mode
&
2297 IEEE80211_HT_OP_MODE_PROTECTION
) {
2298 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
2299 prot_mode
= MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY
;
2301 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
2302 prot_mode
= MWL8K_FRAME_PROT_11N_HT_ALL
;
2305 prot_mode
= MWL8K_FRAME_PROT_DISABLED
;
2309 cmd
->protection_mode
= cpu_to_le16(prot_mode
);
2311 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2312 cmd
->supp_rates
[count
] = bitrates
[count
].hw_value
;
2314 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2323 struct mwl8k_cmd_update_rateset
{
2324 struct mwl8k_cmd_pkt header
;
2325 __u8 legacy_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2327 /* Bitmap for supported MCS codes. */
2328 __u8 mcs_set
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2329 __u8 reserved
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2330 } __attribute__((packed
));
2332 static int mwl8k_update_rateset(struct ieee80211_hw
*hw
,
2333 struct ieee80211_vif
*vif
)
2335 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2336 struct mwl8k_cmd_update_rateset
*cmd
;
2337 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2341 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2345 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATE
);
2346 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2348 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2349 cmd
->legacy_rates
[count
] = bitrates
[count
].hw_value
;
2351 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2358 * CMD_USE_FIXED_RATE.
2360 #define MWL8K_RATE_TABLE_SIZE 8
2361 #define MWL8K_UCAST_RATE 0
2362 #define MWL8K_USE_AUTO_RATE 0x0002
2364 struct mwl8k_rate_entry
{
2365 /* Set to 1 if HT rate, 0 if legacy. */
2368 /* Set to 1 to use retry_count field. */
2369 __le32 enable_retry
;
2371 /* Specified legacy rate or MCS. */
2374 /* Number of allowed retries. */
2376 } __attribute__((packed
));
2378 struct mwl8k_rate_table
{
2379 /* 1 to allow specified rate and below */
2380 __le32 allow_rate_drop
;
2382 struct mwl8k_rate_entry rate_entry
[MWL8K_RATE_TABLE_SIZE
];
2383 } __attribute__((packed
));
2385 struct mwl8k_cmd_use_fixed_rate
{
2386 struct mwl8k_cmd_pkt header
;
2388 struct mwl8k_rate_table rate_table
;
2390 /* Unicast, Broadcast or Multicast */
2394 } __attribute__((packed
));
2396 static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw
*hw
,
2397 u32 action
, u32 rate_type
, struct mwl8k_rate_table
*rate_table
)
2399 struct mwl8k_cmd_use_fixed_rate
*cmd
;
2403 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2407 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE
);
2408 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2410 cmd
->action
= cpu_to_le32(action
);
2411 cmd
->rate_type
= cpu_to_le32(rate_type
);
2413 if (rate_table
!= NULL
) {
2414 /* Copy over each field manually so
2415 * that bitflipping can be done
2417 cmd
->rate_table
.allow_rate_drop
=
2418 cpu_to_le32(rate_table
->allow_rate_drop
);
2419 cmd
->rate_table
.num_rates
=
2420 cpu_to_le32(rate_table
->num_rates
);
2422 for (count
= 0; count
< rate_table
->num_rates
; count
++) {
2423 struct mwl8k_rate_entry
*dst
=
2424 &cmd
->rate_table
.rate_entry
[count
];
2425 struct mwl8k_rate_entry
*src
=
2426 &rate_table
->rate_entry
[count
];
2428 dst
->is_ht_rate
= cpu_to_le32(src
->is_ht_rate
);
2429 dst
->enable_retry
= cpu_to_le32(src
->enable_retry
);
2430 dst
->rate
= cpu_to_le32(src
->rate
);
2431 dst
->retry_count
= cpu_to_le32(src
->retry_count
);
2435 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2443 * Interrupt handling.
2445 static irqreturn_t
mwl8k_interrupt(int irq
, void *dev_id
)
2447 struct ieee80211_hw
*hw
= dev_id
;
2448 struct mwl8k_priv
*priv
= hw
->priv
;
2451 status
= ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2452 iowrite32(~status
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2457 if (status
& MWL8K_A2H_INT_TX_DONE
)
2458 tasklet_schedule(&priv
->tx_reclaim_task
);
2460 if (status
& MWL8K_A2H_INT_RX_READY
) {
2461 while (rxq_process(hw
, 0, 1))
2462 rxq_refill(hw
, 0, 1);
2465 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
2466 if (priv
->hostcmd_wait
!= NULL
) {
2467 complete(priv
->hostcmd_wait
);
2468 priv
->hostcmd_wait
= NULL
;
2472 if (status
& MWL8K_A2H_INT_QUEUE_EMPTY
) {
2473 if (!priv
->inconfig
&&
2475 mwl8k_txq_busy(priv
))
2476 mwl8k_tx_start(priv
);
2484 * Core driver operations.
2486 static int mwl8k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2488 struct mwl8k_priv
*priv
= hw
->priv
;
2489 int index
= skb_get_queue_mapping(skb
);
2492 if (priv
->current_channel
== NULL
) {
2493 printk(KERN_DEBUG
"%s: dropped TX frame since radio "
2494 "disabled\n", priv
->name
);
2496 return NETDEV_TX_OK
;
2499 rc
= mwl8k_txq_xmit(hw
, index
, skb
);
2504 struct mwl8k_work_struct
{
2505 /* Initialized by mwl8k_queue_work(). */
2506 struct work_struct wt
;
2508 /* Required field passed in to mwl8k_queue_work(). */
2509 struct ieee80211_hw
*hw
;
2511 /* Required field passed in to mwl8k_queue_work(). */
2512 int (*wfunc
)(struct work_struct
*w
);
2514 /* Initialized by mwl8k_queue_work(). */
2515 struct completion
*cmd_wait
;
2521 * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX
2522 * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS.
2526 /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */
2527 unsigned long timeout_ms
;
2529 /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */
2530 u32 txwait_attempts
;
2532 /* Optional field. Defaults to MWL8K_TXWAIT_MS. */
2537 /* Flags controlling behavior of config queue requests */
2539 /* Caller spins while waiting for completion. */
2540 #define MWL8K_WQ_SPIN 0x00000001
2542 /* Wait for TX queues to empty before proceeding with configuration. */
2543 #define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002
2545 /* Queue request and return immediately. */
2546 #define MWL8K_WQ_POST_REQUEST 0x00000004
2549 * Caller sleeps and waits for task complete notification.
2550 * Do not use in atomic context.
2552 #define MWL8K_WQ_SLEEP 0x00000008
2554 /* Free work struct when task is done. */
2555 #define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010
2558 * Config request is queued and returns to caller imediately. Use
2559 * this in atomic context. Work struct is freed by mwl8k_queue_work()
2560 * when this flag is set.
2562 #define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \
2563 MWL8K_WQ_FREE_WORKSTRUCT)
2565 /* Default work queue behavior is to sleep and wait for tx completion. */
2566 #define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY)
2569 * Default config request timeout. Add adjustments to make sure the
2570 * config thread waits long enough for both tx wait and cmd wait before
2574 /* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */
2575 #define MWL8K_TXWAIT_TIMEOUT_MS 1000
2577 /* Default number of TX wait attempts. */
2578 #define MWL8K_WQ_TXWAIT_ATTEMPTS 4
2580 /* Total time to wait for TXQ to drain. */
2581 #define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \
2582 MWL8K_WQ_TXWAIT_ATTEMPTS)
2584 /* Scheduling slop. */
2585 #define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200
2587 #define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \
2589 MWL8K_OS_SCHEDULE_OVERHEAD_MS)
2591 static void mwl8k_config_thread(struct work_struct
*wt
)
2593 struct mwl8k_work_struct
*worker
= (struct mwl8k_work_struct
*)wt
;
2594 struct ieee80211_hw
*hw
= worker
->hw
;
2595 struct mwl8k_priv
*priv
= hw
->priv
;
2598 spin_lock_irq(&priv
->tx_lock
);
2599 priv
->inconfig
= true;
2600 spin_unlock_irq(&priv
->tx_lock
);
2602 ieee80211_stop_queues(hw
);
2605 * Wait for host queues to drain before doing PHY
2606 * reconfiguration. This avoids interrupting any in-flight
2607 * DMA transfers to the hardware.
2609 if (worker
->options
& MWL8K_WQ_TX_WAIT_EMPTY
) {
2613 u32 tx_wait_attempts
= worker
->txwait_attempts
;
2615 time_remaining
= worker
->tx_timeout_ms
;
2616 if (!tx_wait_attempts
)
2617 tx_wait_attempts
= 1;
2619 timeout
= worker
->tx_timeout_ms
/tx_wait_attempts
;
2623 iter
= tx_wait_attempts
;
2627 if (time_remaining
> timeout
) {
2628 time_remaining
-= timeout
;
2629 wait_time
= timeout
;
2631 wait_time
= time_remaining
;
2636 rc
= mwl8k_tx_wait_empty(hw
, wait_time
);
2638 printk(KERN_ERR
"%s() txwait timeout=%ums "
2639 "Retry:%u/%u\n", __func__
, timeout
,
2640 tx_wait_attempts
- iter
+ 1,
2643 } while (rc
&& --iter
);
2645 rc
= iter
? 0 : -ETIMEDOUT
;
2648 rc
= worker
->wfunc(wt
);
2650 spin_lock_irq(&priv
->tx_lock
);
2651 priv
->inconfig
= false;
2652 if (priv
->pending_tx_pkts
&& priv
->radio_on
)
2653 mwl8k_tx_start(priv
);
2654 spin_unlock_irq(&priv
->tx_lock
);
2655 ieee80211_wake_queues(hw
);
2658 if (worker
->options
& MWL8K_WQ_SLEEP
)
2659 complete(worker
->cmd_wait
);
2661 if (worker
->options
& MWL8K_WQ_FREE_WORKSTRUCT
)
2665 static int mwl8k_queue_work(struct ieee80211_hw
*hw
,
2666 struct mwl8k_work_struct
*worker
,
2667 struct workqueue_struct
*wqueue
,
2668 int (*wfunc
)(struct work_struct
*w
))
2670 unsigned long timeout
= 0;
2673 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
2675 if (!worker
->timeout_ms
)
2676 worker
->timeout_ms
= MWL8K_CONFIG_TIMEOUT_MS
;
2678 if (!worker
->options
)
2679 worker
->options
= MWL8K_WQ_DEFAULT_OPTIONS
;
2681 if (!worker
->txwait_attempts
)
2682 worker
->txwait_attempts
= MWL8K_WQ_TXWAIT_ATTEMPTS
;
2684 if (!worker
->tx_timeout_ms
)
2685 worker
->tx_timeout_ms
= MWL8K_TXWAIT_MS
;
2688 worker
->cmd_wait
= &cmd_wait
;
2690 worker
->wfunc
= wfunc
;
2692 INIT_WORK(&worker
->wt
, mwl8k_config_thread
);
2693 queue_work(wqueue
, &worker
->wt
);
2695 if (worker
->options
& MWL8K_WQ_POST_REQUEST
) {
2698 if (worker
->options
& MWL8K_WQ_SPIN
) {
2699 timeout
= worker
->timeout_ms
;
2700 while (timeout
&& (worker
->rc
> 0)) {
2704 } else if (worker
->options
& MWL8K_WQ_SLEEP
)
2705 timeout
= wait_for_completion_timeout(&cmd_wait
,
2706 msecs_to_jiffies(worker
->timeout_ms
));
2711 cancel_work_sync(&worker
->wt
);
2719 struct mwl8k_start_worker
{
2720 struct mwl8k_work_struct header
;
2723 static int mwl8k_start_wt(struct work_struct
*wt
)
2725 struct mwl8k_start_worker
*worker
= (struct mwl8k_start_worker
*)wt
;
2726 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2727 struct mwl8k_priv
*priv
= hw
->priv
;
2730 if (priv
->vif
!= NULL
) {
2732 goto mwl8k_start_exit
;
2736 if (mwl8k_cmd_802_11_radio_enable(hw
)) {
2738 goto mwl8k_start_exit
;
2741 /* Purge TX/RX HW queues */
2742 if (mwl8k_cmd_set_pre_scan(hw
)) {
2744 goto mwl8k_start_exit
;
2747 if (mwl8k_cmd_set_post_scan(hw
, "\x00\x00\x00\x00\x00\x00")) {
2749 goto mwl8k_start_exit
;
2752 /* Enable firmware rate adaptation */
2753 if (mwl8k_cmd_setrateadaptmode(hw
, 0)) {
2755 goto mwl8k_start_exit
;
2758 /* Disable WMM. WMM gets enabled when stack sends WMM parms */
2759 if (mwl8k_set_wmm(hw
, 0)) {
2761 goto mwl8k_start_exit
;
2764 /* Disable sniffer mode */
2765 if (mwl8k_enable_sniffer(hw
, 0))
2772 static int mwl8k_start(struct ieee80211_hw
*hw
)
2774 struct mwl8k_start_worker
*worker
;
2775 struct mwl8k_priv
*priv
= hw
->priv
;
2778 /* Enable tx reclaim tasklet */
2779 tasklet_enable(&priv
->tx_reclaim_task
);
2781 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
2782 IRQF_SHARED
, MWL8K_NAME
, hw
);
2784 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
2787 goto mwl8k_start_disable_tasklet
;
2790 /* Enable interrupts */
2791 iowrite32(MWL8K_A2H_EVENTS
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2793 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2794 if (worker
== NULL
) {
2796 goto mwl8k_start_disable_irq
;
2799 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2800 priv
->config_wq
, mwl8k_start_wt
);
2805 if (rc
== -ETIMEDOUT
)
2806 printk(KERN_ERR
"%s() timed out\n", __func__
);
2810 mwl8k_start_disable_irq
:
2811 spin_lock_irq(&priv
->tx_lock
);
2812 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2813 spin_unlock_irq(&priv
->tx_lock
);
2814 free_irq(priv
->pdev
->irq
, hw
);
2816 mwl8k_start_disable_tasklet
:
2817 tasklet_disable(&priv
->tx_reclaim_task
);
2822 struct mwl8k_stop_worker
{
2823 struct mwl8k_work_struct header
;
2826 static int mwl8k_stop_wt(struct work_struct
*wt
)
2828 struct mwl8k_stop_worker
*worker
= (struct mwl8k_stop_worker
*)wt
;
2829 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2831 return mwl8k_cmd_802_11_radio_disable(hw
);
2834 static void mwl8k_stop(struct ieee80211_hw
*hw
)
2837 struct mwl8k_stop_worker
*worker
;
2838 struct mwl8k_priv
*priv
= hw
->priv
;
2841 if (priv
->vif
!= NULL
)
2844 ieee80211_stop_queues(hw
);
2846 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2850 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2851 priv
->config_wq
, mwl8k_stop_wt
);
2853 if (rc
== -ETIMEDOUT
)
2854 printk(KERN_ERR
"%s() timed out\n", __func__
);
2856 /* Disable interrupts */
2857 spin_lock_irq(&priv
->tx_lock
);
2858 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2859 spin_unlock_irq(&priv
->tx_lock
);
2860 free_irq(priv
->pdev
->irq
, hw
);
2862 /* Stop finalize join worker */
2863 cancel_work_sync(&priv
->finalize_join_worker
);
2864 if (priv
->beacon_skb
!= NULL
)
2865 dev_kfree_skb(priv
->beacon_skb
);
2867 /* Stop tx reclaim tasklet */
2868 tasklet_disable(&priv
->tx_reclaim_task
);
2870 /* Stop config thread */
2871 flush_workqueue(priv
->config_wq
);
2873 /* Return all skbs to mac80211 */
2874 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
2875 mwl8k_txq_reclaim(hw
, i
, 1);
2878 static int mwl8k_add_interface(struct ieee80211_hw
*hw
,
2879 struct ieee80211_if_init_conf
*conf
)
2881 struct mwl8k_priv
*priv
= hw
->priv
;
2882 struct mwl8k_vif
*mwl8k_vif
;
2885 * We only support one active interface at a time.
2887 if (priv
->vif
!= NULL
)
2891 * We only support managed interfaces for now.
2893 if (conf
->type
!= NL80211_IFTYPE_STATION
&&
2894 conf
->type
!= NL80211_IFTYPE_MONITOR
)
2897 /* Clean out driver private area */
2898 mwl8k_vif
= MWL8K_VIF(conf
->vif
);
2899 memset(mwl8k_vif
, 0, sizeof(*mwl8k_vif
));
2901 /* Save the mac address */
2902 memcpy(mwl8k_vif
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
2904 /* Back pointer to parent config block */
2905 mwl8k_vif
->priv
= priv
;
2907 /* Setup initial PHY parameters */
2908 memcpy(mwl8k_vif
->legacy_rates
,
2909 priv
->rates
, sizeof(mwl8k_vif
->legacy_rates
));
2910 mwl8k_vif
->legacy_nrates
= ARRAY_SIZE(priv
->rates
);
2912 /* Set Initial sequence number to zero */
2913 mwl8k_vif
->seqno
= 0;
2915 priv
->vif
= conf
->vif
;
2916 priv
->current_channel
= NULL
;
2921 static void mwl8k_remove_interface(struct ieee80211_hw
*hw
,
2922 struct ieee80211_if_init_conf
*conf
)
2924 struct mwl8k_priv
*priv
= hw
->priv
;
2926 if (priv
->vif
== NULL
)
2932 struct mwl8k_config_worker
{
2933 struct mwl8k_work_struct header
;
2937 static int mwl8k_config_wt(struct work_struct
*wt
)
2939 struct mwl8k_config_worker
*worker
=
2940 (struct mwl8k_config_worker
*)wt
;
2941 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2942 struct ieee80211_conf
*conf
= &hw
->conf
;
2943 struct mwl8k_priv
*priv
= hw
->priv
;
2946 if (mwl8k_cmd_802_11_radio_enable(hw
)) {
2948 goto mwl8k_config_exit
;
2951 priv
->current_channel
= conf
->channel
;
2953 if (mwl8k_cmd_set_rf_channel(hw
, conf
->channel
)) {
2955 goto mwl8k_config_exit
;
2958 if (conf
->power_level
> 18)
2959 conf
->power_level
= 18;
2960 if (mwl8k_cmd_802_11_rf_tx_power(hw
, conf
->power_level
)) {
2962 goto mwl8k_config_exit
;
2965 if (mwl8k_cmd_mimo_config(hw
, 0x7, 0x7))
2972 static int mwl8k_config(struct ieee80211_hw
*hw
, u32 changed
)
2975 struct mwl8k_config_worker
*worker
;
2976 struct mwl8k_priv
*priv
= hw
->priv
;
2978 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2982 worker
->changed
= changed
;
2983 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2984 priv
->config_wq
, mwl8k_config_wt
);
2985 if (rc
== -ETIMEDOUT
) {
2986 printk(KERN_ERR
"%s() timed out.\n", __func__
);
2993 * mac80211 will crash on anything other than -EINVAL on
2994 * error. Looks like wireless extensions which calls mac80211
2995 * may be the actual culprit...
2997 return rc
? -EINVAL
: 0;
3000 struct mwl8k_bss_info_changed_worker
{
3001 struct mwl8k_work_struct header
;
3002 struct ieee80211_vif
*vif
;
3003 struct ieee80211_bss_conf
*info
;
3007 static int mwl8k_bss_info_changed_wt(struct work_struct
*wt
)
3009 struct mwl8k_bss_info_changed_worker
*worker
=
3010 (struct mwl8k_bss_info_changed_worker
*)wt
;
3011 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3012 struct ieee80211_vif
*vif
= worker
->vif
;
3013 struct ieee80211_bss_conf
*info
= worker
->info
;
3017 struct mwl8k_priv
*priv
= hw
->priv
;
3018 struct mwl8k_vif
*mwl8k_vif
= MWL8K_VIF(vif
);
3020 changed
= worker
->changed
;
3021 priv
->capture_beacon
= false;
3024 memcpy(&mwl8k_vif
->bss_info
, info
,
3025 sizeof(struct ieee80211_bss_conf
));
3028 if (mwl8k_update_rateset(hw
, vif
))
3029 goto mwl8k_bss_info_changed_exit
;
3031 /* Turn on rate adaptation */
3032 if (mwl8k_cmd_use_fixed_rate(hw
, MWL8K_USE_AUTO_RATE
,
3033 MWL8K_UCAST_RATE
, NULL
))
3034 goto mwl8k_bss_info_changed_exit
;
3036 /* Set radio preamble */
3037 if (mwl8k_set_radio_preamble(hw
, info
->use_short_preamble
))
3038 goto mwl8k_bss_info_changed_exit
;
3041 if (mwl8k_cmd_set_slot(hw
, info
->use_short_slot
?
3042 MWL8K_SHORT_SLOTTIME
: MWL8K_LONG_SLOTTIME
))
3043 goto mwl8k_bss_info_changed_exit
;
3045 /* Update peer rate info */
3046 if (mwl8k_cmd_update_sta_db(hw
, vif
,
3047 MWL8K_STA_DB_MODIFY_ENTRY
))
3048 goto mwl8k_bss_info_changed_exit
;
3051 if (mwl8k_cmd_set_aid(hw
, vif
))
3052 goto mwl8k_bss_info_changed_exit
;
3055 * Finalize the join. Tell rx handler to process
3056 * next beacon from our BSSID.
3058 memcpy(priv
->capture_bssid
, mwl8k_vif
->bssid
, ETH_ALEN
);
3059 priv
->capture_beacon
= true;
3061 mwl8k_cmd_update_sta_db(hw
, vif
, MWL8K_STA_DB_DEL_ENTRY
);
3062 memset(&mwl8k_vif
->bss_info
, 0,
3063 sizeof(struct ieee80211_bss_conf
));
3064 memset(mwl8k_vif
->bssid
, 0, ETH_ALEN
);
3067 mwl8k_bss_info_changed_exit
:
3072 static void mwl8k_bss_info_changed(struct ieee80211_hw
*hw
,
3073 struct ieee80211_vif
*vif
,
3074 struct ieee80211_bss_conf
*info
,
3077 struct mwl8k_bss_info_changed_worker
*worker
;
3078 struct mwl8k_priv
*priv
= hw
->priv
;
3079 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
3082 if (changed
& BSS_CHANGED_BSSID
)
3083 memcpy(mv_vif
->bssid
, info
->bssid
, ETH_ALEN
);
3085 if ((changed
& BSS_CHANGED_ASSOC
) == 0)
3088 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3093 worker
->info
= info
;
3094 worker
->changed
= changed
;
3095 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3097 mwl8k_bss_info_changed_wt
);
3099 if (rc
== -ETIMEDOUT
)
3100 printk(KERN_ERR
"%s() timed out\n", __func__
);
3103 struct mwl8k_configure_filter_worker
{
3104 struct mwl8k_work_struct header
;
3105 unsigned int changed_flags
;
3106 unsigned int *total_flags
;
3108 struct dev_addr_list
*mclist
;
3111 #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
3113 static int mwl8k_configure_filter_wt(struct work_struct
*wt
)
3115 struct mwl8k_configure_filter_worker
*worker
=
3116 (struct mwl8k_configure_filter_worker
*)wt
;
3118 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3119 unsigned int changed_flags
= worker
->changed_flags
;
3120 unsigned int *total_flags
= worker
->total_flags
;
3121 int mc_count
= worker
->mc_count
;
3122 struct dev_addr_list
*mclist
= worker
->mclist
;
3124 struct mwl8k_priv
*priv
= hw
->priv
;
3127 if (changed_flags
& FIF_BCN_PRBRESP_PROMISC
) {
3128 if (*total_flags
& FIF_BCN_PRBRESP_PROMISC
)
3129 rc
= mwl8k_cmd_set_pre_scan(hw
);
3133 bssid
= "\x00\x00\x00\x00\x00\x00";
3134 if (priv
->vif
!= NULL
)
3135 bssid
= MWL8K_VIF(priv
->vif
)->bssid
;
3137 rc
= mwl8k_cmd_set_post_scan(hw
, bssid
);
3142 goto mwl8k_configure_filter_exit
;
3144 if (mc_count
> priv
->num_mcaddrs
)
3145 mc_count
= priv
->num_mcaddrs
;
3147 rc
= mwl8k_cmd_mac_multicast_adr(hw
, mc_count
, mclist
);
3150 "%s()Error setting multicast addresses\n",
3154 mwl8k_configure_filter_exit
:
3158 static u64
mwl8k_prepare_multicast(struct ieee80211_hw
*hw
,
3159 int mc_count
, struct dev_addr_list
*mclist
)
3161 struct mwl8k_configure_filter_worker
*worker
;
3163 worker
= kzalloc(sizeof(*worker
), GFP_ATOMIC
);
3169 * XXX: This is _HORRIBLY_ broken!!
3171 * No locking, the mclist pointer might be invalid as soon as this
3172 * function returns, something in the list might be invalidated
3173 * once we get to the worker, etc...
3175 worker
->mc_count
= mc_count
;
3176 worker
->mclist
= mclist
;
3181 static void mwl8k_configure_filter(struct ieee80211_hw
*hw
,
3182 unsigned int changed_flags
,
3183 unsigned int *total_flags
,
3187 struct mwl8k_configure_filter_worker
*worker
= (void *)multicast
;
3188 struct mwl8k_priv
*priv
= hw
->priv
;
3190 /* Clear unsupported feature flags */
3191 *total_flags
&= MWL8K_SUPPORTED_IF_FLAGS
;
3193 if (!(changed_flags
& MWL8K_SUPPORTED_IF_FLAGS
))
3199 worker
->header
.options
= MWL8K_WQ_QUEUE_ONLY
| MWL8K_WQ_TX_WAIT_EMPTY
;
3200 worker
->changed_flags
= changed_flags
;
3201 worker
->total_flags
= total_flags
;
3203 mwl8k_queue_work(hw
, &worker
->header
, priv
->config_wq
,
3204 mwl8k_configure_filter_wt
);
3207 struct mwl8k_set_rts_threshold_worker
{
3208 struct mwl8k_work_struct header
;
3212 static int mwl8k_set_rts_threshold_wt(struct work_struct
*wt
)
3214 struct mwl8k_set_rts_threshold_worker
*worker
=
3215 (struct mwl8k_set_rts_threshold_worker
*)wt
;
3217 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3218 u16 threshold
= (u16
)(worker
->value
);
3221 rc
= mwl8k_rts_threshold(hw
, MWL8K_CMD_SET
, &threshold
);
3226 static int mwl8k_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
3229 struct mwl8k_set_rts_threshold_worker
*worker
;
3230 struct mwl8k_priv
*priv
= hw
->priv
;
3232 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3236 worker
->value
= value
;
3238 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3240 mwl8k_set_rts_threshold_wt
);
3243 if (rc
== -ETIMEDOUT
) {
3244 printk(KERN_ERR
"%s() timed out\n", __func__
);
3251 struct mwl8k_conf_tx_worker
{
3252 struct mwl8k_work_struct header
;
3254 const struct ieee80211_tx_queue_params
*params
;
3257 static int mwl8k_conf_tx_wt(struct work_struct
*wt
)
3259 struct mwl8k_conf_tx_worker
*worker
=
3260 (struct mwl8k_conf_tx_worker
*)wt
;
3262 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3263 u16 queue
= worker
->queue
;
3264 const struct ieee80211_tx_queue_params
*params
= worker
->params
;
3266 struct mwl8k_priv
*priv
= hw
->priv
;
3269 if (!priv
->wmm_enabled
) {
3270 if (mwl8k_set_wmm(hw
, 1)) {
3272 goto mwl8k_conf_tx_exit
;
3276 if (mwl8k_set_edca_params(hw
, GET_TXQ(queue
), params
->cw_min
,
3277 params
->cw_max
, params
->aifs
, params
->txop
))
3283 static int mwl8k_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
3284 const struct ieee80211_tx_queue_params
*params
)
3287 struct mwl8k_conf_tx_worker
*worker
;
3288 struct mwl8k_priv
*priv
= hw
->priv
;
3290 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3294 worker
->queue
= queue
;
3295 worker
->params
= params
;
3296 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3297 priv
->config_wq
, mwl8k_conf_tx_wt
);
3299 if (rc
== -ETIMEDOUT
) {
3300 printk(KERN_ERR
"%s() timed out\n", __func__
);
3306 static int mwl8k_get_tx_stats(struct ieee80211_hw
*hw
,
3307 struct ieee80211_tx_queue_stats
*stats
)
3309 struct mwl8k_priv
*priv
= hw
->priv
;
3310 struct mwl8k_tx_queue
*txq
;
3313 spin_lock_bh(&priv
->tx_lock
);
3314 for (index
= 0; index
< MWL8K_TX_QUEUES
; index
++) {
3315 txq
= priv
->txq
+ index
;
3316 memcpy(&stats
[index
], &txq
->tx_stats
,
3317 sizeof(struct ieee80211_tx_queue_stats
));
3319 spin_unlock_bh(&priv
->tx_lock
);
3323 struct mwl8k_get_stats_worker
{
3324 struct mwl8k_work_struct header
;
3325 struct ieee80211_low_level_stats
*stats
;
3328 static int mwl8k_get_stats_wt(struct work_struct
*wt
)
3330 struct mwl8k_get_stats_worker
*worker
=
3331 (struct mwl8k_get_stats_worker
*)wt
;
3333 return mwl8k_cmd_802_11_get_stat(worker
->header
.hw
, worker
->stats
);
3336 static int mwl8k_get_stats(struct ieee80211_hw
*hw
,
3337 struct ieee80211_low_level_stats
*stats
)
3340 struct mwl8k_get_stats_worker
*worker
;
3341 struct mwl8k_priv
*priv
= hw
->priv
;
3343 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3347 worker
->stats
= stats
;
3348 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3349 priv
->config_wq
, mwl8k_get_stats_wt
);
3352 if (rc
== -ETIMEDOUT
) {
3353 printk(KERN_ERR
"%s() timed out\n", __func__
);
3360 static const struct ieee80211_ops mwl8k_ops
= {
3362 .start
= mwl8k_start
,
3364 .add_interface
= mwl8k_add_interface
,
3365 .remove_interface
= mwl8k_remove_interface
,
3366 .config
= mwl8k_config
,
3367 .bss_info_changed
= mwl8k_bss_info_changed
,
3368 .prepare_multicast
= mwl8k_prepare_multicast
,
3369 .configure_filter
= mwl8k_configure_filter
,
3370 .set_rts_threshold
= mwl8k_set_rts_threshold
,
3371 .conf_tx
= mwl8k_conf_tx
,
3372 .get_tx_stats
= mwl8k_get_tx_stats
,
3373 .get_stats
= mwl8k_get_stats
,
3376 static void mwl8k_tx_reclaim_handler(unsigned long data
)
3379 struct ieee80211_hw
*hw
= (struct ieee80211_hw
*) data
;
3380 struct mwl8k_priv
*priv
= hw
->priv
;
3382 spin_lock_bh(&priv
->tx_lock
);
3383 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3384 mwl8k_txq_reclaim(hw
, i
, 0);
3386 if (priv
->tx_wait
!= NULL
&& mwl8k_txq_busy(priv
) == 0) {
3387 complete(priv
->tx_wait
);
3388 priv
->tx_wait
= NULL
;
3390 spin_unlock_bh(&priv
->tx_lock
);
3393 static void mwl8k_finalize_join_worker(struct work_struct
*work
)
3395 struct mwl8k_priv
*priv
=
3396 container_of(work
, struct mwl8k_priv
, finalize_join_worker
);
3397 struct sk_buff
*skb
= priv
->beacon_skb
;
3398 u8 dtim
= MWL8K_VIF(priv
->vif
)->bss_info
.dtim_period
;
3400 mwl8k_finalize_join(priv
->hw
, skb
->data
, skb
->len
, dtim
);
3403 priv
->beacon_skb
= NULL
;
3406 static int __devinit
mwl8k_probe(struct pci_dev
*pdev
,
3407 const struct pci_device_id
*id
)
3409 struct ieee80211_hw
*hw
;
3410 struct mwl8k_priv
*priv
;
3415 rc
= pci_enable_device(pdev
);
3417 printk(KERN_ERR
"%s: Cannot enable new PCI device\n",
3422 rc
= pci_request_regions(pdev
, MWL8K_NAME
);
3424 printk(KERN_ERR
"%s: Cannot obtain PCI resources\n",
3429 pci_set_master(pdev
);
3431 hw
= ieee80211_alloc_hw(sizeof(*priv
), &mwl8k_ops
);
3433 printk(KERN_ERR
"%s: ieee80211 alloc failed\n", MWL8K_NAME
);
3441 priv
->hostcmd_wait
= NULL
;
3442 priv
->tx_wait
= NULL
;
3443 priv
->inconfig
= false;
3444 priv
->wmm_enabled
= false;
3445 priv
->pending_tx_pkts
= 0;
3446 strncpy(priv
->name
, MWL8K_NAME
, sizeof(priv
->name
));
3448 spin_lock_init(&priv
->fw_lock
);
3450 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3451 pci_set_drvdata(pdev
, hw
);
3453 priv
->regs
= pci_iomap(pdev
, 1, 0x10000);
3454 if (priv
->regs
== NULL
) {
3455 printk(KERN_ERR
"%s: Cannot map device memory\n", priv
->name
);
3459 memcpy(priv
->channels
, mwl8k_channels
, sizeof(mwl8k_channels
));
3460 priv
->band
.band
= IEEE80211_BAND_2GHZ
;
3461 priv
->band
.channels
= priv
->channels
;
3462 priv
->band
.n_channels
= ARRAY_SIZE(mwl8k_channels
);
3463 priv
->band
.bitrates
= priv
->rates
;
3464 priv
->band
.n_bitrates
= ARRAY_SIZE(mwl8k_rates
);
3465 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &priv
->band
;
3467 BUILD_BUG_ON(sizeof(priv
->rates
) != sizeof(mwl8k_rates
));
3468 memcpy(priv
->rates
, mwl8k_rates
, sizeof(mwl8k_rates
));
3471 * Extra headroom is the size of the required DMA header
3472 * minus the size of the smallest 802.11 frame (CTS frame).
3474 hw
->extra_tx_headroom
=
3475 sizeof(struct mwl8k_dma_data
) - sizeof(struct ieee80211_cts
);
3477 hw
->channel_change_time
= 10;
3479 hw
->queues
= MWL8K_TX_QUEUES
;
3481 hw
->wiphy
->interface_modes
=
3482 BIT(NL80211_IFTYPE_STATION
) | BIT(NL80211_IFTYPE_MONITOR
);
3484 /* Set rssi and noise values to dBm */
3485 hw
->flags
|= IEEE80211_HW_SIGNAL_DBM
| IEEE80211_HW_NOISE_DBM
;
3486 hw
->vif_data_size
= sizeof(struct mwl8k_vif
);
3489 /* Set default radio state and preamble */
3491 priv
->radio_short_preamble
= 0;
3493 /* Finalize join worker */
3494 INIT_WORK(&priv
->finalize_join_worker
, mwl8k_finalize_join_worker
);
3496 /* TX reclaim tasklet */
3497 tasklet_init(&priv
->tx_reclaim_task
,
3498 mwl8k_tx_reclaim_handler
, (unsigned long)hw
);
3499 tasklet_disable(&priv
->tx_reclaim_task
);
3501 /* Config workthread */
3502 priv
->config_wq
= create_singlethread_workqueue("mwl8k_config");
3503 if (priv
->config_wq
== NULL
)
3506 /* Power management cookie */
3507 priv
->cookie
= pci_alloc_consistent(priv
->pdev
, 4, &priv
->cookie_dma
);
3508 if (priv
->cookie
== NULL
)
3511 rc
= mwl8k_rxq_init(hw
, 0);
3514 rxq_refill(hw
, 0, INT_MAX
);
3516 spin_lock_init(&priv
->tx_lock
);
3518 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++) {
3519 rc
= mwl8k_txq_init(hw
, i
);
3521 goto err_free_queues
;
3524 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
3525 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3526 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL
);
3527 iowrite32(0xffffffff, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK
);
3529 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
3530 IRQF_SHARED
, MWL8K_NAME
, hw
);
3532 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
3534 goto err_free_queues
;
3537 /* Reset firmware and hardware */
3538 mwl8k_hw_reset(priv
);
3540 /* Ask userland hotplug daemon for the device firmware */
3541 rc
= mwl8k_request_firmware(priv
, (u32
)id
->driver_data
);
3543 printk(KERN_ERR
"%s: Firmware files not found\n", priv
->name
);
3547 /* Load firmware into hardware */
3548 rc
= mwl8k_load_firmware(priv
);
3550 printk(KERN_ERR
"%s: Cannot start firmware\n", priv
->name
);
3551 goto err_stop_firmware
;
3554 /* Reclaim memory once firmware is successfully loaded */
3555 mwl8k_release_firmware(priv
);
3558 * Temporarily enable interrupts. Initial firmware host
3559 * commands use interrupts and avoids polling. Disable
3560 * interrupts when done.
3562 iowrite32(MWL8K_A2H_EVENTS
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3564 /* Get config data, mac addrs etc */
3565 rc
= mwl8k_cmd_get_hw_spec(hw
);
3567 printk(KERN_ERR
"%s: Cannot initialise firmware\n", priv
->name
);
3568 goto err_stop_firmware
;
3571 /* Turn radio off */
3572 rc
= mwl8k_cmd_802_11_radio_disable(hw
);
3574 printk(KERN_ERR
"%s: Cannot disable\n", priv
->name
);
3575 goto err_stop_firmware
;
3578 /* Disable interrupts */
3579 spin_lock_irq(&priv
->tx_lock
);
3580 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3581 spin_unlock_irq(&priv
->tx_lock
);
3582 free_irq(priv
->pdev
->irq
, hw
);
3584 rc
= ieee80211_register_hw(hw
);
3586 printk(KERN_ERR
"%s: Cannot register device\n", priv
->name
);
3587 goto err_stop_firmware
;
3590 fw
= (u8
*)&priv
->fw_rev
;
3591 printk(KERN_INFO
"%s: 88W%u %s\n", priv
->name
, priv
->part_num
,
3593 printk(KERN_INFO
"%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n",
3594 priv
->name
, MWL8K_VERSION
, fw
[3], fw
[2], fw
[1], fw
[0]);
3595 printk(KERN_INFO
"%s: MAC Address: %pM\n", priv
->name
,
3596 hw
->wiphy
->perm_addr
);
3601 mwl8k_hw_reset(priv
);
3602 mwl8k_release_firmware(priv
);
3605 spin_lock_irq(&priv
->tx_lock
);
3606 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3607 spin_unlock_irq(&priv
->tx_lock
);
3608 free_irq(priv
->pdev
->irq
, hw
);
3611 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3612 mwl8k_txq_deinit(hw
, i
);
3613 mwl8k_rxq_deinit(hw
, 0);
3616 if (priv
->cookie
!= NULL
)
3617 pci_free_consistent(priv
->pdev
, 4,
3618 priv
->cookie
, priv
->cookie_dma
);
3620 if (priv
->regs
!= NULL
)
3621 pci_iounmap(pdev
, priv
->regs
);
3623 if (priv
->config_wq
!= NULL
)
3624 destroy_workqueue(priv
->config_wq
);
3626 pci_set_drvdata(pdev
, NULL
);
3627 ieee80211_free_hw(hw
);
3630 pci_release_regions(pdev
);
3631 pci_disable_device(pdev
);
3636 static void __devexit
mwl8k_shutdown(struct pci_dev
*pdev
)
3638 printk(KERN_ERR
"===>%s(%u)\n", __func__
, __LINE__
);
3641 static void __devexit
mwl8k_remove(struct pci_dev
*pdev
)
3643 struct ieee80211_hw
*hw
= pci_get_drvdata(pdev
);
3644 struct mwl8k_priv
*priv
;
3651 ieee80211_stop_queues(hw
);
3653 ieee80211_unregister_hw(hw
);
3655 /* Remove tx reclaim tasklet */
3656 tasklet_kill(&priv
->tx_reclaim_task
);
3658 /* Stop config thread */
3659 destroy_workqueue(priv
->config_wq
);
3662 mwl8k_hw_reset(priv
);
3664 /* Return all skbs to mac80211 */
3665 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3666 mwl8k_txq_reclaim(hw
, i
, 1);
3668 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3669 mwl8k_txq_deinit(hw
, i
);
3671 mwl8k_rxq_deinit(hw
, 0);
3673 pci_free_consistent(priv
->pdev
, 4,
3674 priv
->cookie
, priv
->cookie_dma
);
3676 pci_iounmap(pdev
, priv
->regs
);
3677 pci_set_drvdata(pdev
, NULL
);
3678 ieee80211_free_hw(hw
);
3679 pci_release_regions(pdev
);
3680 pci_disable_device(pdev
);
3683 static struct pci_driver mwl8k_driver
= {
3685 .id_table
= mwl8k_table
,
3686 .probe
= mwl8k_probe
,
3687 .remove
= __devexit_p(mwl8k_remove
),
3688 .shutdown
= __devexit_p(mwl8k_shutdown
),
3691 static int __init
mwl8k_init(void)
3693 return pci_register_driver(&mwl8k_driver
);
3696 static void __exit
mwl8k_exit(void)
3698 pci_unregister_driver(&mwl8k_driver
);
3701 module_init(mwl8k_init
);
3702 module_exit(mwl8k_exit
);