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 pci_unmap_single(priv
->pdev
, dma_addr
, dma_size
,
1597 PCI_DMA_BIDIRECTIONAL
);
1599 result
= &cmd
->result
;
1601 spin_lock_irq(&priv
->fw_lock
);
1602 priv
->hostcmd_wait
= NULL
;
1603 spin_unlock_irq(&priv
->fw_lock
);
1604 printk(KERN_ERR
"%s: Command %s timeout after %u ms\n",
1606 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1607 MWL8K_CMD_TIMEOUT_MS
);
1610 rc
= *result
? -EINVAL
: 0;
1612 printk(KERN_ERR
"%s: Command %s error 0x%x\n",
1614 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1624 struct mwl8k_cmd_get_hw_spec
{
1625 struct mwl8k_cmd_pkt header
;
1627 __u8 host_interface
;
1629 __u8 perm_addr
[IEEE80211_ADDR_LEN
];
1634 __u8 mcs_bitmap
[16];
1635 __le32 rx_queue_ptr
;
1636 __le32 num_tx_queues
;
1637 __le32 tx_queue_ptrs
[MWL8K_TX_QUEUES
];
1639 __le32 num_tx_desc_per_queue
;
1640 __le32 total_rx_desc
;
1641 } __attribute__((packed
));
1643 static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw
*hw
)
1645 struct mwl8k_priv
*priv
= hw
->priv
;
1646 struct mwl8k_cmd_get_hw_spec
*cmd
;
1650 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1654 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_HW_SPEC
);
1655 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1657 memset(cmd
->perm_addr
, 0xff, sizeof(cmd
->perm_addr
));
1658 cmd
->ps_cookie
= cpu_to_le32(priv
->cookie_dma
);
1659 cmd
->rx_queue_ptr
= cpu_to_le32(priv
->rxq
[0].rx_desc_dma
);
1660 cmd
->num_tx_queues
= cpu_to_le32(MWL8K_TX_QUEUES
);
1661 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
1662 cmd
->tx_queue_ptrs
[i
] = cpu_to_le32(priv
->txq
[i
].tx_desc_dma
);
1663 cmd
->num_tx_desc_per_queue
= cpu_to_le32(MWL8K_TX_DESCS
);
1664 cmd
->total_rx_desc
= cpu_to_le32(MWL8K_RX_DESCS
);
1666 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1669 SET_IEEE80211_PERM_ADDR(hw
, cmd
->perm_addr
);
1670 priv
->num_mcaddrs
= le16_to_cpu(cmd
->num_mcaddrs
);
1671 priv
->fw_rev
= le32_to_cpu(cmd
->fw_rev
);
1672 priv
->hw_rev
= cmd
->hw_rev
;
1673 priv
->region_code
= le16_to_cpu(cmd
->region_code
);
1681 * CMD_MAC_MULTICAST_ADR.
1683 struct mwl8k_cmd_mac_multicast_adr
{
1684 struct mwl8k_cmd_pkt header
;
1687 __u8 addr
[1][IEEE80211_ADDR_LEN
];
1690 #define MWL8K_ENABLE_RX_MULTICAST 0x000F
1691 static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw
*hw
,
1693 struct dev_addr_list
*mclist
)
1695 struct mwl8k_cmd_mac_multicast_adr
*cmd
;
1698 int size
= sizeof(*cmd
) + ((mc_count
- 1) * IEEE80211_ADDR_LEN
);
1699 cmd
= kzalloc(size
, GFP_KERNEL
);
1703 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR
);
1704 cmd
->header
.length
= cpu_to_le16(size
);
1705 cmd
->action
= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST
);
1706 cmd
->numaddr
= cpu_to_le16(mc_count
);
1707 while ((index
< mc_count
) && mclist
) {
1708 if (mclist
->da_addrlen
!= IEEE80211_ADDR_LEN
) {
1710 goto mwl8k_cmd_mac_multicast_adr_exit
;
1712 memcpy(cmd
->addr
[index
], mclist
->da_addr
, IEEE80211_ADDR_LEN
);
1714 mclist
= mclist
->next
;
1717 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1719 mwl8k_cmd_mac_multicast_adr_exit
:
1725 * CMD_802_11_GET_STAT.
1727 struct mwl8k_cmd_802_11_get_stat
{
1728 struct mwl8k_cmd_pkt header
;
1731 } __attribute__((packed
));
1733 #define MWL8K_STAT_ACK_FAILURE 9
1734 #define MWL8K_STAT_RTS_FAILURE 12
1735 #define MWL8K_STAT_FCS_ERROR 24
1736 #define MWL8K_STAT_RTS_SUCCESS 11
1738 static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw
*hw
,
1739 struct ieee80211_low_level_stats
*stats
)
1741 struct mwl8k_cmd_802_11_get_stat
*cmd
;
1744 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1748 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_STAT
);
1749 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1750 cmd
->action
= cpu_to_le16(MWL8K_CMD_GET
);
1752 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1754 stats
->dot11ACKFailureCount
=
1755 le32_to_cpu(cmd
->stats
[MWL8K_STAT_ACK_FAILURE
]);
1756 stats
->dot11RTSFailureCount
=
1757 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_FAILURE
]);
1758 stats
->dot11FCSErrorCount
=
1759 le32_to_cpu(cmd
->stats
[MWL8K_STAT_FCS_ERROR
]);
1760 stats
->dot11RTSSuccessCount
=
1761 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_SUCCESS
]);
1769 * CMD_802_11_RADIO_CONTROL.
1771 struct mwl8k_cmd_802_11_radio_control
{
1772 struct mwl8k_cmd_pkt header
;
1776 } __attribute__((packed
));
1778 static int mwl8k_cmd_802_11_radio_control(struct ieee80211_hw
*hw
, int enable
)
1780 struct mwl8k_priv
*priv
= hw
->priv
;
1781 struct mwl8k_cmd_802_11_radio_control
*cmd
;
1784 if (((enable
& MWL8K_RADIO_ENABLE
) == priv
->radio_state
) &&
1785 !(enable
& MWL8K_RADIO_FORCE
))
1788 enable
&= MWL8K_RADIO_ENABLE
;
1790 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1794 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RADIO_CONTROL
);
1795 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1796 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1797 cmd
->control
= cpu_to_le16(priv
->radio_preamble
);
1798 cmd
->radio_on
= cpu_to_le16(enable
? 0x0001 : 0x0000);
1800 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1804 priv
->radio_state
= enable
;
1810 mwl8k_set_radio_preamble(struct ieee80211_hw
*hw
, bool short_preamble
)
1812 struct mwl8k_priv
*priv
;
1814 if (hw
== NULL
|| hw
->priv
== NULL
)
1818 priv
->radio_preamble
= (short_preamble
?
1819 MWL8K_RADIO_SHORT_PREAMBLE
:
1820 MWL8K_RADIO_LONG_PREAMBLE
);
1822 return mwl8k_cmd_802_11_radio_control(hw
,
1823 MWL8K_RADIO_ENABLE
| MWL8K_RADIO_FORCE
);
1827 * CMD_802_11_RF_TX_POWER.
1829 #define MWL8K_TX_POWER_LEVEL_TOTAL 8
1831 struct mwl8k_cmd_802_11_rf_tx_power
{
1832 struct mwl8k_cmd_pkt header
;
1834 __le16 support_level
;
1835 __le16 current_level
;
1837 __le16 power_level_list
[MWL8K_TX_POWER_LEVEL_TOTAL
];
1838 } __attribute__((packed
));
1840 static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw
*hw
, int dBm
)
1842 struct mwl8k_cmd_802_11_rf_tx_power
*cmd
;
1845 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1849 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RF_TX_POWER
);
1850 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1851 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1852 cmd
->support_level
= cpu_to_le16(dBm
);
1854 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1863 struct mwl8k_cmd_set_pre_scan
{
1864 struct mwl8k_cmd_pkt header
;
1865 } __attribute__((packed
));
1867 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw
*hw
)
1869 struct mwl8k_cmd_set_pre_scan
*cmd
;
1872 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1876 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN
);
1877 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1879 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1886 * CMD_SET_POST_SCAN.
1888 struct mwl8k_cmd_set_post_scan
{
1889 struct mwl8k_cmd_pkt header
;
1891 __u8 bssid
[IEEE80211_ADDR_LEN
];
1892 } __attribute__((packed
));
1895 mwl8k_cmd_set_post_scan(struct ieee80211_hw
*hw
, __u8 mac
[IEEE80211_ADDR_LEN
])
1897 struct mwl8k_cmd_set_post_scan
*cmd
;
1900 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1904 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_POST_SCAN
);
1905 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1907 memcpy(cmd
->bssid
, mac
, IEEE80211_ADDR_LEN
);
1909 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1916 * CMD_SET_RF_CHANNEL.
1918 struct mwl8k_cmd_set_rf_channel
{
1919 struct mwl8k_cmd_pkt header
;
1921 __u8 current_channel
;
1922 __le32 channel_flags
;
1923 } __attribute__((packed
));
1925 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw
*hw
,
1926 struct ieee80211_channel
*channel
)
1928 struct mwl8k_cmd_set_rf_channel
*cmd
;
1931 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1935 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL
);
1936 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1937 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1938 cmd
->current_channel
= channel
->hw_value
;
1939 if (channel
->band
== IEEE80211_BAND_2GHZ
)
1940 cmd
->channel_flags
= cpu_to_le32(0x00000081);
1942 cmd
->channel_flags
= cpu_to_le32(0x00000000);
1944 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1953 struct mwl8k_cmd_set_slot
{
1954 struct mwl8k_cmd_pkt header
;
1957 } __attribute__((packed
));
1959 static int mwl8k_cmd_set_slot(struct ieee80211_hw
*hw
, int slot_time
)
1961 struct mwl8k_cmd_set_slot
*cmd
;
1964 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1968 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_SLOT
);
1969 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1970 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1971 cmd
->short_slot
= slot_time
== MWL8K_SHORT_SLOTTIME
? 1 : 0;
1973 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1982 struct mwl8k_cmd_mimo_config
{
1983 struct mwl8k_cmd_pkt header
;
1985 __u8 rx_antenna_map
;
1986 __u8 tx_antenna_map
;
1987 } __attribute__((packed
));
1989 static int mwl8k_cmd_mimo_config(struct ieee80211_hw
*hw
, __u8 rx
, __u8 tx
)
1991 struct mwl8k_cmd_mimo_config
*cmd
;
1994 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1998 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MIMO_CONFIG
);
1999 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2000 cmd
->action
= cpu_to_le32((u32
)MWL8K_CMD_SET
);
2001 cmd
->rx_antenna_map
= rx
;
2002 cmd
->tx_antenna_map
= tx
;
2004 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2011 * CMD_ENABLE_SNIFFER.
2013 struct mwl8k_cmd_enable_sniffer
{
2014 struct mwl8k_cmd_pkt header
;
2016 } __attribute__((packed
));
2018 static int mwl8k_enable_sniffer(struct ieee80211_hw
*hw
, bool enable
)
2020 struct mwl8k_cmd_enable_sniffer
*cmd
;
2023 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2027 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER
);
2028 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2029 cmd
->action
= enable
? cpu_to_le32((u32
)MWL8K_CMD_SET
) : 0;
2031 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2038 * CMD_SET_RATE_ADAPT_MODE.
2040 struct mwl8k_cmd_set_rate_adapt_mode
{
2041 struct mwl8k_cmd_pkt header
;
2044 } __attribute__((packed
));
2046 static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw
*hw
, __u16 mode
)
2048 struct mwl8k_cmd_set_rate_adapt_mode
*cmd
;
2051 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2055 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE
);
2056 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2057 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
2058 cmd
->mode
= cpu_to_le16(mode
);
2060 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2069 struct mwl8k_cmd_set_wmm
{
2070 struct mwl8k_cmd_pkt header
;
2072 } __attribute__((packed
));
2074 static int mwl8k_set_wmm(struct ieee80211_hw
*hw
, bool enable
)
2076 struct mwl8k_priv
*priv
= hw
->priv
;
2077 struct mwl8k_cmd_set_wmm
*cmd
;
2080 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2084 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_WMM_MODE
);
2085 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2086 cmd
->action
= enable
? cpu_to_le16(MWL8K_CMD_SET
) : 0;
2088 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2092 priv
->wmm_mode
= enable
;
2098 * CMD_SET_RTS_THRESHOLD.
2100 struct mwl8k_cmd_rts_threshold
{
2101 struct mwl8k_cmd_pkt header
;
2104 } __attribute__((packed
));
2106 static int mwl8k_rts_threshold(struct ieee80211_hw
*hw
,
2107 u16 action
, u16
*threshold
)
2109 struct mwl8k_cmd_rts_threshold
*cmd
;
2112 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2116 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD
);
2117 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2118 cmd
->action
= cpu_to_le16(action
);
2119 cmd
->threshold
= cpu_to_le16(*threshold
);
2121 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2128 * CMD_SET_EDCA_PARAMS.
2130 struct mwl8k_cmd_set_edca_params
{
2131 struct mwl8k_cmd_pkt header
;
2133 /* See MWL8K_SET_EDCA_XXX below */
2136 /* TX opportunity in units of 32 us */
2139 /* Log exponent of max contention period: 0...15*/
2142 /* Log exponent of min contention period: 0...15 */
2145 /* Adaptive interframe spacing in units of 32us */
2148 /* TX queue to configure */
2150 } __attribute__((packed
));
2152 #define MWL8K_GET_EDCA_ALL 0
2153 #define MWL8K_SET_EDCA_CW 0x01
2154 #define MWL8K_SET_EDCA_TXOP 0x02
2155 #define MWL8K_SET_EDCA_AIFS 0x04
2157 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2158 MWL8K_SET_EDCA_TXOP | \
2159 MWL8K_SET_EDCA_AIFS)
2162 mwl8k_set_edca_params(struct ieee80211_hw
*hw
, __u8 qnum
,
2163 __u16 cw_min
, __u16 cw_max
,
2164 __u8 aifs
, __u16 txop
)
2166 struct mwl8k_cmd_set_edca_params
*cmd
;
2167 u32 log_cw_min
, log_cw_max
;
2170 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2174 log_cw_min
= ilog2(cw_min
+1);
2175 log_cw_max
= ilog2(cw_max
+1);
2176 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS
);
2177 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2179 cmd
->action
= cpu_to_le16(MWL8K_SET_EDCA_ALL
);
2180 cmd
->txop
= cpu_to_le16(txop
);
2181 cmd
->log_cw_max
= (u8
)log_cw_max
;
2182 cmd
->log_cw_min
= (u8
)log_cw_min
;
2186 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2193 * CMD_FINALIZE_JOIN.
2196 /* FJ beacon buffer size is compiled into the firmware. */
2197 #define MWL8K_FJ_BEACON_MAXLEN 128
2199 struct mwl8k_cmd_finalize_join
{
2200 struct mwl8k_cmd_pkt header
;
2201 __le32 sleep_interval
; /* Number of beacon periods to sleep */
2202 __u8 beacon_data
[MWL8K_FJ_BEACON_MAXLEN
];
2203 } __attribute__((packed
));
2205 static int mwl8k_finalize_join(struct ieee80211_hw
*hw
, void *frame
,
2206 __u16 framelen
, __u16 dtim
)
2208 struct mwl8k_cmd_finalize_join
*cmd
;
2209 struct ieee80211_mgmt
*payload
= frame
;
2217 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2221 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN
);
2222 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2225 cmd
->sleep_interval
= cpu_to_le32(dtim
);
2227 cmd
->sleep_interval
= cpu_to_le32(1);
2229 hdrlen
= ieee80211_hdrlen(payload
->frame_control
);
2231 payload_len
= framelen
> hdrlen
? framelen
- hdrlen
: 0;
2233 /* XXX TBD Might just have to abort and return an error */
2234 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2235 printk(KERN_ERR
"%s(): WARNING: Incomplete beacon "
2236 "sent to firmware. Sz=%u MAX=%u\n", __func__
,
2237 payload_len
, MWL8K_FJ_BEACON_MAXLEN
);
2239 payload_len
= payload_len
> MWL8K_FJ_BEACON_MAXLEN
?
2240 MWL8K_FJ_BEACON_MAXLEN
: payload_len
;
2242 if (payload
&& payload_len
)
2243 memcpy(cmd
->beacon_data
, &payload
->u
.beacon
, payload_len
);
2245 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2253 struct mwl8k_cmd_update_sta_db
{
2254 struct mwl8k_cmd_pkt header
;
2256 /* See STADB_ACTION_TYPE */
2259 /* Peer MAC address */
2260 __u8 peer_addr
[IEEE80211_ADDR_LEN
];
2264 /* Peer info - valid during add/update. */
2265 struct peer_capability_info peer_info
;
2266 } __attribute__((packed
));
2268 static int mwl8k_cmd_update_sta_db(struct ieee80211_hw
*hw
,
2269 struct ieee80211_vif
*vif
, __u32 action
)
2271 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2272 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2273 struct mwl8k_cmd_update_sta_db
*cmd
;
2274 struct peer_capability_info
*peer_info
;
2275 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2276 DECLARE_MAC_BUF(mac
);
2280 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2284 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_UPDATE_STADB
);
2285 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2287 cmd
->action
= cpu_to_le32(action
);
2288 peer_info
= &cmd
->peer_info
;
2289 memcpy(cmd
->peer_addr
, mv_vif
->bssid
, IEEE80211_ADDR_LEN
);
2292 case MWL8K_STA_DB_ADD_ENTRY
:
2293 case MWL8K_STA_DB_MODIFY_ENTRY
:
2294 /* Build peer_info block */
2295 peer_info
->peer_type
= MWL8K_PEER_TYPE_ACCESSPOINT
;
2296 peer_info
->basic_caps
= cpu_to_le16(info
->assoc_capability
);
2297 peer_info
->interop
= 1;
2298 peer_info
->amsdu_enabled
= 0;
2300 rates
= peer_info
->legacy_rates
;
2301 for (count
= 0 ; count
< mv_vif
->legacy_nrates
; count
++)
2302 rates
[count
] = bitrates
[count
].hw_value
;
2304 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2306 mv_vif
->peer_id
= peer_info
->station_id
;
2310 case MWL8K_STA_DB_DEL_ENTRY
:
2311 case MWL8K_STA_DB_FLUSH
:
2313 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2315 mv_vif
->peer_id
= 0;
2326 #define IEEE80211_OPMODE_DISABLED 0x00
2327 #define IEEE80211_OPMODE_NON_MEMBER_PROT_MODE 0x01
2328 #define IEEE80211_OPMODE_ONE_20MHZ_STA_PROT_MODE 0x02
2329 #define IEEE80211_OPMODE_HTMIXED_PROT_MODE 0x03
2331 #define MWL8K_RATE_INDEX_MAX_ARRAY 14
2333 #define MWL8K_FRAME_PROT_DISABLED 0x00
2334 #define MWL8K_FRAME_PROT_11G 0x07
2335 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2336 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2337 #define MWL8K_FRAME_PROT_MASK 0x07
2339 struct mwl8k_cmd_update_set_aid
{
2340 struct mwl8k_cmd_pkt header
;
2343 /* AP's MAC address (BSSID) */
2344 __u8 bssid
[IEEE80211_ADDR_LEN
];
2345 __le16 protection_mode
;
2346 __u8 supp_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2347 } __attribute__((packed
));
2349 static int mwl8k_cmd_set_aid(struct ieee80211_hw
*hw
,
2350 struct ieee80211_vif
*vif
)
2352 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2353 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2354 struct mwl8k_cmd_update_set_aid
*cmd
;
2355 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2360 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2364 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_AID
);
2365 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2366 cmd
->aid
= cpu_to_le16(info
->aid
);
2368 memcpy(cmd
->bssid
, mv_vif
->bssid
, IEEE80211_ADDR_LEN
);
2370 prot_mode
= MWL8K_FRAME_PROT_DISABLED
;
2372 if (info
->use_cts_prot
) {
2373 prot_mode
= MWL8K_FRAME_PROT_11G
;
2375 switch (info
->ht_operation_mode
&
2376 IEEE80211_HT_OP_MODE_PROTECTION
) {
2377 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
2378 prot_mode
= MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY
;
2380 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
2381 prot_mode
= MWL8K_FRAME_PROT_11N_HT_ALL
;
2384 prot_mode
= MWL8K_FRAME_PROT_DISABLED
;
2389 cmd
->protection_mode
= cpu_to_le16(prot_mode
);
2391 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2392 cmd
->supp_rates
[count
] = bitrates
[count
].hw_value
;
2394 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2403 struct mwl8k_cmd_update_rateset
{
2404 struct mwl8k_cmd_pkt header
;
2405 __u8 legacy_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2407 /* Bitmap for supported MCS codes. */
2408 __u8 mcs_set
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2409 __u8 reserved
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2410 } __attribute__((packed
));
2412 static int mwl8k_update_rateset(struct ieee80211_hw
*hw
,
2413 struct ieee80211_vif
*vif
)
2415 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2416 struct mwl8k_cmd_update_rateset
*cmd
;
2417 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2421 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2425 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATE
);
2426 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2428 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2429 cmd
->legacy_rates
[count
] = bitrates
[count
].hw_value
;
2431 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2438 * CMD_USE_FIXED_RATE.
2440 #define MWL8K_RATE_TABLE_SIZE 8
2441 #define MWL8K_UCAST_RATE 0
2442 #define MWL8K_MCAST_RATE 1
2443 #define MWL8K_BCAST_RATE 2
2445 #define MWL8K_USE_FIXED_RATE 0x0001
2446 #define MWL8K_USE_AUTO_RATE 0x0002
2448 struct mwl8k_rate_entry
{
2449 /* Set to 1 if HT rate, 0 if legacy. */
2452 /* Set to 1 to use retry_count field. */
2453 __le32 enable_retry
;
2455 /* Specified legacy rate or MCS. */
2458 /* Number of allowed retries. */
2460 } __attribute__((packed
));
2462 struct mwl8k_rate_table
{
2463 /* 1 to allow specified rate and below */
2464 __le32 allow_rate_drop
;
2466 struct mwl8k_rate_entry rate_entry
[MWL8K_RATE_TABLE_SIZE
];
2467 } __attribute__((packed
));
2469 struct mwl8k_cmd_use_fixed_rate
{
2470 struct mwl8k_cmd_pkt header
;
2472 struct mwl8k_rate_table rate_table
;
2474 /* Unicast, Broadcast or Multicast */
2478 } __attribute__((packed
));
2480 static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw
*hw
,
2481 u32 action
, u32 rate_type
, struct mwl8k_rate_table
*rate_table
)
2483 struct mwl8k_cmd_use_fixed_rate
*cmd
;
2487 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2491 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE
);
2492 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2494 cmd
->action
= cpu_to_le32(action
);
2495 cmd
->rate_type
= cpu_to_le32(rate_type
);
2497 if (rate_table
!= NULL
) {
2498 /* Copy over each field manually so
2499 * that bitflipping can be done
2501 cmd
->rate_table
.allow_rate_drop
=
2502 cpu_to_le32(rate_table
->allow_rate_drop
);
2503 cmd
->rate_table
.num_rates
=
2504 cpu_to_le32(rate_table
->num_rates
);
2506 for (count
= 0; count
< rate_table
->num_rates
; count
++) {
2507 struct mwl8k_rate_entry
*dst
=
2508 &cmd
->rate_table
.rate_entry
[count
];
2509 struct mwl8k_rate_entry
*src
=
2510 &rate_table
->rate_entry
[count
];
2512 dst
->is_ht_rate
= cpu_to_le32(src
->is_ht_rate
);
2513 dst
->enable_retry
= cpu_to_le32(src
->enable_retry
);
2514 dst
->rate
= cpu_to_le32(src
->rate
);
2515 dst
->retry_count
= cpu_to_le32(src
->retry_count
);
2519 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2527 * Interrupt handling.
2529 static irqreturn_t
mwl8k_interrupt(int irq
, void *dev_id
)
2531 struct ieee80211_hw
*hw
= dev_id
;
2532 struct mwl8k_priv
*priv
= hw
->priv
;
2535 status
= ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2536 iowrite32(~status
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2538 status
&= priv
->int_mask
;
2542 if (status
& MWL8K_A2H_INT_TX_DONE
)
2543 tasklet_schedule(&priv
->tx_reclaim_task
);
2545 if (status
& MWL8K_A2H_INT_RX_READY
) {
2546 while (rxq_process(hw
, 0, 1))
2547 rxq_refill(hw
, 0, 1);
2550 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
2551 if (priv
->hostcmd_wait
!= NULL
) {
2552 complete(priv
->hostcmd_wait
);
2553 priv
->hostcmd_wait
= NULL
;
2557 if (status
& MWL8K_A2H_INT_QUEUE_EMPTY
) {
2558 if (!priv
->inconfig
&&
2559 priv
->radio_state
&&
2560 mwl8k_txq_busy(priv
))
2561 mwl8k_tx_start(priv
);
2569 * Core driver operations.
2571 static int mwl8k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2573 struct mwl8k_priv
*priv
= hw
->priv
;
2574 int index
= skb_get_queue_mapping(skb
);
2577 if (priv
->current_channel
== NULL
) {
2578 printk(KERN_DEBUG
"%s: dropped TX frame since radio "
2579 "disabled\n", priv
->name
);
2581 return NETDEV_TX_OK
;
2584 rc
= mwl8k_txq_xmit(hw
, index
, skb
);
2589 struct mwl8k_work_struct
{
2590 /* Initialized by mwl8k_queue_work(). */
2591 struct work_struct wt
;
2593 /* Required field passed in to mwl8k_queue_work(). */
2594 struct ieee80211_hw
*hw
;
2596 /* Required field passed in to mwl8k_queue_work(). */
2597 int (*wfunc
)(struct work_struct
*w
);
2599 /* Initialized by mwl8k_queue_work(). */
2600 struct completion
*cmd_wait
;
2606 * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX
2607 * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS.
2611 /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */
2612 unsigned long timeout_ms
;
2614 /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */
2615 u32 txwait_attempts
;
2617 /* Optional field. Defaults to MWL8K_TXWAIT_MS. */
2622 /* Flags controlling behavior of config queue requests */
2624 /* Caller spins while waiting for completion. */
2625 #define MWL8K_WQ_SPIN 0x00000001
2627 /* Wait for TX queues to empty before proceeding with configuration. */
2628 #define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002
2630 /* Queue request and return immediately. */
2631 #define MWL8K_WQ_POST_REQUEST 0x00000004
2634 * Caller sleeps and waits for task complete notification.
2635 * Do not use in atomic context.
2637 #define MWL8K_WQ_SLEEP 0x00000008
2639 /* Free work struct when task is done. */
2640 #define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010
2643 * Config request is queued and returns to caller imediately. Use
2644 * this in atomic context. Work struct is freed by mwl8k_queue_work()
2645 * when this flag is set.
2647 #define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \
2648 MWL8K_WQ_FREE_WORKSTRUCT)
2650 /* Default work queue behavior is to sleep and wait for tx completion. */
2651 #define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY)
2654 * Default config request timeout. Add adjustments to make sure the
2655 * config thread waits long enough for both tx wait and cmd wait before
2659 /* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */
2660 #define MWL8K_TXWAIT_TIMEOUT_MS 1000
2662 /* Default number of TX wait attempts. */
2663 #define MWL8K_WQ_TXWAIT_ATTEMPTS 4
2665 /* Total time to wait for TXQ to drain. */
2666 #define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \
2667 MWL8K_WQ_TXWAIT_ATTEMPTS)
2669 /* Scheduling slop. */
2670 #define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200
2672 #define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \
2674 MWL8K_OS_SCHEDULE_OVERHEAD_MS)
2676 static void mwl8k_config_thread(struct work_struct
*wt
)
2678 struct mwl8k_work_struct
*worker
= (struct mwl8k_work_struct
*)wt
;
2679 struct ieee80211_hw
*hw
= worker
->hw
;
2680 struct mwl8k_priv
*priv
= hw
->priv
;
2683 spin_lock_irq(&priv
->tx_lock
);
2684 priv
->inconfig
= true;
2685 spin_unlock_irq(&priv
->tx_lock
);
2687 ieee80211_stop_queues(hw
);
2690 * Wait for host queues to drain before doing PHY
2691 * reconfiguration. This avoids interrupting any in-flight
2692 * DMA transfers to the hardware.
2694 if (worker
->options
& MWL8K_WQ_TX_WAIT_EMPTY
) {
2698 u32 tx_wait_attempts
= worker
->txwait_attempts
;
2700 time_remaining
= worker
->tx_timeout_ms
;
2701 if (!tx_wait_attempts
)
2702 tx_wait_attempts
= 1;
2704 timeout
= worker
->tx_timeout_ms
/tx_wait_attempts
;
2708 iter
= tx_wait_attempts
;
2712 if (time_remaining
> timeout
) {
2713 time_remaining
-= timeout
;
2714 wait_time
= timeout
;
2716 wait_time
= time_remaining
;
2721 rc
= mwl8k_tx_wait_empty(hw
, wait_time
);
2723 printk(KERN_ERR
"%s() txwait timeout=%ums "
2724 "Retry:%u/%u\n", __func__
, timeout
,
2725 tx_wait_attempts
- iter
+ 1,
2728 } while (rc
&& --iter
);
2730 rc
= iter
? 0 : -ETIMEDOUT
;
2733 rc
= worker
->wfunc(wt
);
2735 spin_lock_irq(&priv
->tx_lock
);
2736 priv
->inconfig
= false;
2737 if (priv
->pending_tx_pkts
&& priv
->radio_state
)
2738 mwl8k_tx_start(priv
);
2739 spin_unlock_irq(&priv
->tx_lock
);
2740 ieee80211_wake_queues(hw
);
2743 if (worker
->options
& MWL8K_WQ_SLEEP
)
2744 complete(worker
->cmd_wait
);
2746 if (worker
->options
& MWL8K_WQ_FREE_WORKSTRUCT
)
2750 static int mwl8k_queue_work(struct ieee80211_hw
*hw
,
2751 struct mwl8k_work_struct
*worker
,
2752 struct workqueue_struct
*wqueue
,
2753 int (*wfunc
)(struct work_struct
*w
))
2755 unsigned long timeout
= 0;
2758 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
2760 if (!worker
->timeout_ms
)
2761 worker
->timeout_ms
= MWL8K_CONFIG_TIMEOUT_MS
;
2763 if (!worker
->options
)
2764 worker
->options
= MWL8K_WQ_DEFAULT_OPTIONS
;
2766 if (!worker
->txwait_attempts
)
2767 worker
->txwait_attempts
= MWL8K_WQ_TXWAIT_ATTEMPTS
;
2769 if (!worker
->tx_timeout_ms
)
2770 worker
->tx_timeout_ms
= MWL8K_TXWAIT_MS
;
2773 worker
->cmd_wait
= &cmd_wait
;
2775 worker
->wfunc
= wfunc
;
2777 INIT_WORK(&worker
->wt
, mwl8k_config_thread
);
2778 queue_work(wqueue
, &worker
->wt
);
2780 if (worker
->options
& MWL8K_WQ_POST_REQUEST
) {
2783 if (worker
->options
& MWL8K_WQ_SPIN
) {
2784 timeout
= worker
->timeout_ms
;
2785 while (timeout
&& (worker
->rc
> 0)) {
2789 } else if (worker
->options
& MWL8K_WQ_SLEEP
)
2790 timeout
= wait_for_completion_timeout(&cmd_wait
,
2791 msecs_to_jiffies(worker
->timeout_ms
));
2796 cancel_work_sync(&worker
->wt
);
2804 struct mwl8k_start_worker
{
2805 struct mwl8k_work_struct header
;
2808 static int mwl8k_start_wt(struct work_struct
*wt
)
2810 struct mwl8k_start_worker
*worker
= (struct mwl8k_start_worker
*)wt
;
2811 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2812 struct mwl8k_priv
*priv
= hw
->priv
;
2815 if (priv
->vif
!= NULL
) {
2817 goto mwl8k_start_exit
;
2821 if (mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_ENABLE
)) {
2823 goto mwl8k_start_exit
;
2826 /* Purge TX/RX HW queues */
2827 if (mwl8k_cmd_set_pre_scan(hw
)) {
2829 goto mwl8k_start_exit
;
2832 if (mwl8k_cmd_set_post_scan(hw
, "\x00\x00\x00\x00\x00\x00")) {
2834 goto mwl8k_start_exit
;
2837 /* Enable firmware rate adaptation */
2838 if (mwl8k_cmd_setrateadaptmode(hw
, 0)) {
2840 goto mwl8k_start_exit
;
2843 /* Disable WMM. WMM gets enabled when stack sends WMM parms */
2844 if (mwl8k_set_wmm(hw
, MWL8K_WMM_DISABLE
)) {
2846 goto mwl8k_start_exit
;
2849 /* Disable sniffer mode */
2850 if (mwl8k_enable_sniffer(hw
, 0))
2857 static int mwl8k_start(struct ieee80211_hw
*hw
)
2859 struct mwl8k_start_worker
*worker
;
2860 struct mwl8k_priv
*priv
= hw
->priv
;
2863 /* Enable tx reclaim tasklet */
2864 tasklet_enable(&priv
->tx_reclaim_task
);
2866 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
2867 IRQF_SHARED
, MWL8K_NAME
, hw
);
2869 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
2872 goto mwl8k_start_disable_tasklet
;
2875 /* Enable interrupts */
2876 iowrite32(priv
->int_mask
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2878 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2879 if (worker
== NULL
) {
2881 goto mwl8k_start_disable_irq
;
2884 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2885 priv
->config_wq
, mwl8k_start_wt
);
2890 if (rc
== -ETIMEDOUT
)
2891 printk(KERN_ERR
"%s() timed out\n", __func__
);
2895 mwl8k_start_disable_irq
:
2896 spin_lock_irq(&priv
->tx_lock
);
2897 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2898 spin_unlock_irq(&priv
->tx_lock
);
2899 free_irq(priv
->pdev
->irq
, hw
);
2901 mwl8k_start_disable_tasklet
:
2902 tasklet_disable(&priv
->tx_reclaim_task
);
2907 struct mwl8k_stop_worker
{
2908 struct mwl8k_work_struct header
;
2911 static int mwl8k_stop_wt(struct work_struct
*wt
)
2913 struct mwl8k_stop_worker
*worker
= (struct mwl8k_stop_worker
*)wt
;
2914 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2917 rc
= mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_DISABLE
);
2922 static void mwl8k_stop(struct ieee80211_hw
*hw
)
2925 struct mwl8k_stop_worker
*worker
;
2926 struct mwl8k_priv
*priv
= hw
->priv
;
2929 if (priv
->vif
!= NULL
)
2932 ieee80211_stop_queues(hw
);
2934 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2938 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2939 priv
->config_wq
, mwl8k_stop_wt
);
2941 if (rc
== -ETIMEDOUT
)
2942 printk(KERN_ERR
"%s() timed out\n", __func__
);
2944 /* Disable interrupts */
2945 spin_lock_irq(&priv
->tx_lock
);
2946 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2947 spin_unlock_irq(&priv
->tx_lock
);
2948 free_irq(priv
->pdev
->irq
, hw
);
2950 /* Stop finalize join worker */
2951 cancel_work_sync(&priv
->finalize_join_worker
);
2952 if (priv
->beacon_skb
!= NULL
)
2953 dev_kfree_skb(priv
->beacon_skb
);
2955 /* Stop tx reclaim tasklet */
2956 tasklet_disable(&priv
->tx_reclaim_task
);
2958 /* Stop config thread */
2959 flush_workqueue(priv
->config_wq
);
2961 /* Return all skbs to mac80211 */
2962 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
2963 mwl8k_txq_reclaim(hw
, i
, 1);
2966 static int mwl8k_add_interface(struct ieee80211_hw
*hw
,
2967 struct ieee80211_if_init_conf
*conf
)
2969 struct mwl8k_priv
*priv
= hw
->priv
;
2970 struct mwl8k_vif
*mwl8k_vif
;
2973 * We only support one active interface at a time.
2975 if (priv
->vif
!= NULL
)
2979 * We only support managed interfaces for now.
2981 if (conf
->type
!= NL80211_IFTYPE_STATION
&&
2982 conf
->type
!= NL80211_IFTYPE_MONITOR
)
2985 /* Clean out driver private area */
2986 mwl8k_vif
= MWL8K_VIF(conf
->vif
);
2987 memset(mwl8k_vif
, 0, sizeof(*mwl8k_vif
));
2989 /* Save the mac address */
2990 memcpy(mwl8k_vif
->mac_addr
, conf
->mac_addr
, IEEE80211_ADDR_LEN
);
2992 /* Back pointer to parent config block */
2993 mwl8k_vif
->priv
= priv
;
2995 /* Setup initial PHY parameters */
2996 memcpy(mwl8k_vif
->legacy_rates
,
2997 priv
->rates
, sizeof(mwl8k_vif
->legacy_rates
));
2998 mwl8k_vif
->legacy_nrates
= ARRAY_SIZE(priv
->rates
);
3000 /* Set Initial sequence number to zero */
3001 mwl8k_vif
->seqno
= 0;
3003 priv
->vif
= conf
->vif
;
3004 priv
->current_channel
= NULL
;
3009 static void mwl8k_remove_interface(struct ieee80211_hw
*hw
,
3010 struct ieee80211_if_init_conf
*conf
)
3012 struct mwl8k_priv
*priv
= hw
->priv
;
3014 if (priv
->vif
== NULL
)
3020 struct mwl8k_config_worker
{
3021 struct mwl8k_work_struct header
;
3025 static int mwl8k_config_wt(struct work_struct
*wt
)
3027 struct mwl8k_config_worker
*worker
=
3028 (struct mwl8k_config_worker
*)wt
;
3029 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3030 struct ieee80211_conf
*conf
= &hw
->conf
;
3031 struct mwl8k_priv
*priv
= hw
->priv
;
3034 if (!conf
->radio_enabled
) {
3035 mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_DISABLE
);
3036 priv
->current_channel
= NULL
;
3038 goto mwl8k_config_exit
;
3041 if (mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_ENABLE
)) {
3043 goto mwl8k_config_exit
;
3046 priv
->current_channel
= conf
->channel
;
3048 if (mwl8k_cmd_set_rf_channel(hw
, conf
->channel
)) {
3050 goto mwl8k_config_exit
;
3053 if (conf
->power_level
> 18)
3054 conf
->power_level
= 18;
3055 if (mwl8k_cmd_802_11_rf_tx_power(hw
, conf
->power_level
)) {
3057 goto mwl8k_config_exit
;
3060 if (mwl8k_cmd_mimo_config(hw
, 0x7, 0x7))
3067 static int mwl8k_config(struct ieee80211_hw
*hw
, u32 changed
)
3070 struct mwl8k_config_worker
*worker
;
3071 struct mwl8k_priv
*priv
= hw
->priv
;
3073 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3077 worker
->changed
= changed
;
3078 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3079 priv
->config_wq
, mwl8k_config_wt
);
3080 if (rc
== -ETIMEDOUT
) {
3081 printk(KERN_ERR
"%s() timed out.\n", __func__
);
3088 * mac80211 will crash on anything other than -EINVAL on
3089 * error. Looks like wireless extensions which calls mac80211
3090 * may be the actual culprit...
3092 return rc
? -EINVAL
: 0;
3095 struct mwl8k_bss_info_changed_worker
{
3096 struct mwl8k_work_struct header
;
3097 struct ieee80211_vif
*vif
;
3098 struct ieee80211_bss_conf
*info
;
3102 static int mwl8k_bss_info_changed_wt(struct work_struct
*wt
)
3104 struct mwl8k_bss_info_changed_worker
*worker
=
3105 (struct mwl8k_bss_info_changed_worker
*)wt
;
3106 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3107 struct ieee80211_vif
*vif
= worker
->vif
;
3108 struct ieee80211_bss_conf
*info
= worker
->info
;
3112 struct mwl8k_priv
*priv
= hw
->priv
;
3113 struct mwl8k_vif
*mwl8k_vif
= MWL8K_VIF(vif
);
3115 changed
= worker
->changed
;
3116 priv
->capture_beacon
= false;
3119 memcpy(&mwl8k_vif
->bss_info
, info
,
3120 sizeof(struct ieee80211_bss_conf
));
3123 if (mwl8k_update_rateset(hw
, vif
))
3124 goto mwl8k_bss_info_changed_exit
;
3126 /* Turn on rate adaptation */
3127 if (mwl8k_cmd_use_fixed_rate(hw
, MWL8K_USE_AUTO_RATE
,
3128 MWL8K_UCAST_RATE
, NULL
))
3129 goto mwl8k_bss_info_changed_exit
;
3131 /* Set radio preamble */
3132 if (mwl8k_set_radio_preamble(hw
,
3133 info
->use_short_preamble
))
3134 goto mwl8k_bss_info_changed_exit
;
3137 if (mwl8k_cmd_set_slot(hw
, info
->use_short_slot
?
3138 MWL8K_SHORT_SLOTTIME
: MWL8K_LONG_SLOTTIME
))
3139 goto mwl8k_bss_info_changed_exit
;
3141 /* Update peer rate info */
3142 if (mwl8k_cmd_update_sta_db(hw
, vif
,
3143 MWL8K_STA_DB_MODIFY_ENTRY
))
3144 goto mwl8k_bss_info_changed_exit
;
3147 if (mwl8k_cmd_set_aid(hw
, vif
))
3148 goto mwl8k_bss_info_changed_exit
;
3151 * Finalize the join. Tell rx handler to process
3152 * next beacon from our BSSID.
3154 memcpy(priv
->capture_bssid
,
3155 mwl8k_vif
->bssid
, IEEE80211_ADDR_LEN
);
3156 priv
->capture_beacon
= true;
3158 mwl8k_cmd_update_sta_db(hw
, vif
, MWL8K_STA_DB_DEL_ENTRY
);
3159 memset(&mwl8k_vif
->bss_info
, 0,
3160 sizeof(struct ieee80211_bss_conf
));
3161 memset(mwl8k_vif
->bssid
, 0, IEEE80211_ADDR_LEN
);
3164 mwl8k_bss_info_changed_exit
:
3169 static void mwl8k_bss_info_changed(struct ieee80211_hw
*hw
,
3170 struct ieee80211_vif
*vif
,
3171 struct ieee80211_bss_conf
*info
,
3174 struct mwl8k_bss_info_changed_worker
*worker
;
3175 struct mwl8k_priv
*priv
= hw
->priv
;
3176 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
3179 if (changed
& BSS_CHANGED_BSSID
)
3180 memcpy(mv_vif
->bssid
, info
->bssid
, IEEE80211_ADDR_LEN
);
3182 if ((changed
& BSS_CHANGED_ASSOC
) == 0)
3185 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3190 worker
->info
= info
;
3191 worker
->changed
= changed
;
3192 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3194 mwl8k_bss_info_changed_wt
);
3196 if (rc
== -ETIMEDOUT
)
3197 printk(KERN_ERR
"%s() timed out\n", __func__
);
3200 struct mwl8k_configure_filter_worker
{
3201 struct mwl8k_work_struct header
;
3202 unsigned int changed_flags
;
3203 unsigned int *total_flags
;
3205 struct dev_addr_list
*mclist
;
3208 #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
3210 static int mwl8k_configure_filter_wt(struct work_struct
*wt
)
3212 struct mwl8k_configure_filter_worker
*worker
=
3213 (struct mwl8k_configure_filter_worker
*)wt
;
3215 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3216 unsigned int changed_flags
= worker
->changed_flags
;
3217 unsigned int *total_flags
= worker
->total_flags
;
3218 int mc_count
= worker
->mc_count
;
3219 struct dev_addr_list
*mclist
= worker
->mclist
;
3221 struct mwl8k_priv
*priv
= hw
->priv
;
3222 struct mwl8k_vif
*mv_vif
;
3225 if (changed_flags
& FIF_BCN_PRBRESP_PROMISC
) {
3226 if (*total_flags
& FIF_BCN_PRBRESP_PROMISC
)
3227 rc
= mwl8k_cmd_set_pre_scan(hw
);
3229 mv_vif
= MWL8K_VIF(priv
->vif
);
3230 rc
= mwl8k_cmd_set_post_scan(hw
, mv_vif
->bssid
);
3235 goto mwl8k_configure_filter_exit
;
3237 mc_count
= mc_count
< priv
->num_mcaddrs
?
3238 mc_count
: priv
->num_mcaddrs
;
3239 rc
= mwl8k_cmd_mac_multicast_adr(hw
, mc_count
, mclist
);
3242 "%s()Error setting multicast addresses\n",
3246 mwl8k_configure_filter_exit
:
3250 static void mwl8k_configure_filter(struct ieee80211_hw
*hw
,
3251 unsigned int changed_flags
,
3252 unsigned int *total_flags
,
3254 struct dev_addr_list
*mclist
)
3257 struct mwl8k_configure_filter_worker
*worker
;
3258 struct mwl8k_priv
*priv
= hw
->priv
;
3260 /* Clear unsupported feature flags */
3261 *total_flags
&= MWL8K_SUPPORTED_IF_FLAGS
;
3263 if (!(changed_flags
& MWL8K_SUPPORTED_IF_FLAGS
) && !mc_count
)
3266 worker
= kzalloc(sizeof(*worker
), GFP_ATOMIC
);
3270 worker
->header
.options
= MWL8K_WQ_QUEUE_ONLY
| MWL8K_WQ_TX_WAIT_EMPTY
;
3271 worker
->changed_flags
= changed_flags
;
3272 worker
->total_flags
= total_flags
;
3273 worker
->mc_count
= mc_count
;
3274 worker
->mclist
= mclist
;
3276 mwl8k_queue_work(hw
, &worker
->header
, priv
->config_wq
,
3277 mwl8k_configure_filter_wt
);
3280 struct mwl8k_set_rts_threshold_worker
{
3281 struct mwl8k_work_struct header
;
3285 static int mwl8k_set_rts_threshold_wt(struct work_struct
*wt
)
3287 struct mwl8k_set_rts_threshold_worker
*worker
=
3288 (struct mwl8k_set_rts_threshold_worker
*)wt
;
3290 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3291 u16 threshold
= (u16
)(worker
->value
);
3294 rc
= mwl8k_rts_threshold(hw
, MWL8K_CMD_SET
, &threshold
);
3299 static int mwl8k_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
3302 struct mwl8k_set_rts_threshold_worker
*worker
;
3303 struct mwl8k_priv
*priv
= hw
->priv
;
3305 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3309 worker
->value
= value
;
3311 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3313 mwl8k_set_rts_threshold_wt
);
3316 if (rc
== -ETIMEDOUT
) {
3317 printk(KERN_ERR
"%s() timed out\n", __func__
);
3324 struct mwl8k_conf_tx_worker
{
3325 struct mwl8k_work_struct header
;
3327 const struct ieee80211_tx_queue_params
*params
;
3330 static int mwl8k_conf_tx_wt(struct work_struct
*wt
)
3332 struct mwl8k_conf_tx_worker
*worker
=
3333 (struct mwl8k_conf_tx_worker
*)wt
;
3335 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3336 u16 queue
= worker
->queue
;
3337 const struct ieee80211_tx_queue_params
*params
= worker
->params
;
3339 struct mwl8k_priv
*priv
= hw
->priv
;
3342 if (priv
->wmm_mode
== MWL8K_WMM_DISABLE
)
3343 if (mwl8k_set_wmm(hw
, MWL8K_WMM_ENABLE
)) {
3345 goto mwl8k_conf_tx_exit
;
3348 if (mwl8k_set_edca_params(hw
, GET_TXQ(queue
), params
->cw_min
,
3349 params
->cw_max
, params
->aifs
, params
->txop
))
3355 static int mwl8k_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
3356 const struct ieee80211_tx_queue_params
*params
)
3359 struct mwl8k_conf_tx_worker
*worker
;
3360 struct mwl8k_priv
*priv
= hw
->priv
;
3362 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3366 worker
->queue
= queue
;
3367 worker
->params
= params
;
3368 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3369 priv
->config_wq
, mwl8k_conf_tx_wt
);
3371 if (rc
== -ETIMEDOUT
) {
3372 printk(KERN_ERR
"%s() timed out\n", __func__
);
3378 static int mwl8k_get_tx_stats(struct ieee80211_hw
*hw
,
3379 struct ieee80211_tx_queue_stats
*stats
)
3381 struct mwl8k_priv
*priv
= hw
->priv
;
3382 struct mwl8k_tx_queue
*txq
;
3385 spin_lock_bh(&priv
->tx_lock
);
3386 for (index
= 0; index
< MWL8K_TX_QUEUES
; index
++) {
3387 txq
= priv
->txq
+ index
;
3388 memcpy(&stats
[index
], &txq
->tx_stats
,
3389 sizeof(struct ieee80211_tx_queue_stats
));
3391 spin_unlock_bh(&priv
->tx_lock
);
3395 struct mwl8k_get_stats_worker
{
3396 struct mwl8k_work_struct header
;
3397 struct ieee80211_low_level_stats
*stats
;
3400 static int mwl8k_get_stats_wt(struct work_struct
*wt
)
3402 struct mwl8k_get_stats_worker
*worker
=
3403 (struct mwl8k_get_stats_worker
*)wt
;
3405 return mwl8k_cmd_802_11_get_stat(worker
->header
.hw
, worker
->stats
);
3408 static int mwl8k_get_stats(struct ieee80211_hw
*hw
,
3409 struct ieee80211_low_level_stats
*stats
)
3412 struct mwl8k_get_stats_worker
*worker
;
3413 struct mwl8k_priv
*priv
= hw
->priv
;
3415 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3419 worker
->stats
= stats
;
3420 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3421 priv
->config_wq
, mwl8k_get_stats_wt
);
3424 if (rc
== -ETIMEDOUT
) {
3425 printk(KERN_ERR
"%s() timed out\n", __func__
);
3432 static const struct ieee80211_ops mwl8k_ops
= {
3434 .start
= mwl8k_start
,
3436 .add_interface
= mwl8k_add_interface
,
3437 .remove_interface
= mwl8k_remove_interface
,
3438 .config
= mwl8k_config
,
3439 .bss_info_changed
= mwl8k_bss_info_changed
,
3440 .configure_filter
= mwl8k_configure_filter
,
3441 .set_rts_threshold
= mwl8k_set_rts_threshold
,
3442 .conf_tx
= mwl8k_conf_tx
,
3443 .get_tx_stats
= mwl8k_get_tx_stats
,
3444 .get_stats
= mwl8k_get_stats
,
3447 static void mwl8k_tx_reclaim_handler(unsigned long data
)
3450 struct ieee80211_hw
*hw
= (struct ieee80211_hw
*) data
;
3451 struct mwl8k_priv
*priv
= hw
->priv
;
3453 spin_lock_bh(&priv
->tx_lock
);
3454 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3455 mwl8k_txq_reclaim(hw
, i
, 0);
3457 if (priv
->tx_wait
!= NULL
) {
3458 int count
= mwl8k_txq_busy(priv
);
3460 complete(priv
->tx_wait
);
3461 priv
->tx_wait
= NULL
;
3464 spin_unlock_bh(&priv
->tx_lock
);
3467 static void mwl8k_finalize_join_worker(struct work_struct
*work
)
3469 struct mwl8k_priv
*priv
=
3470 container_of(work
, struct mwl8k_priv
, finalize_join_worker
);
3471 struct sk_buff
*skb
= priv
->beacon_skb
;
3472 u8 dtim
= (MWL8K_VIF(priv
->vif
))->bss_info
.dtim_period
;
3474 mwl8k_finalize_join(priv
->hw
, skb
->data
, skb
->len
, dtim
);
3477 priv
->beacon_skb
= NULL
;
3480 static int __devinit
mwl8k_probe(struct pci_dev
*pdev
,
3481 const struct pci_device_id
*id
)
3483 struct ieee80211_hw
*hw
;
3484 struct mwl8k_priv
*priv
;
3485 DECLARE_MAC_BUF(mac
);
3490 rc
= pci_enable_device(pdev
);
3492 printk(KERN_ERR
"%s: Cannot enable new PCI device\n",
3497 rc
= pci_request_regions(pdev
, MWL8K_NAME
);
3499 printk(KERN_ERR
"%s: Cannot obtain PCI resources\n",
3504 pci_set_master(pdev
);
3506 hw
= ieee80211_alloc_hw(sizeof(*priv
), &mwl8k_ops
);
3508 printk(KERN_ERR
"%s: ieee80211 alloc failed\n", MWL8K_NAME
);
3516 priv
->hostcmd_wait
= NULL
;
3517 priv
->tx_wait
= NULL
;
3518 priv
->inconfig
= false;
3519 priv
->wep_enabled
= 0;
3520 priv
->wmm_mode
= false;
3521 priv
->pending_tx_pkts
= 0;
3522 strncpy(priv
->name
, MWL8K_NAME
, sizeof(priv
->name
));
3524 spin_lock_init(&priv
->fw_lock
);
3526 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3527 pci_set_drvdata(pdev
, hw
);
3529 priv
->regs
= pci_iomap(pdev
, 1, 0x10000);
3530 if (priv
->regs
== NULL
) {
3531 printk(KERN_ERR
"%s: Cannot map device memory\n", priv
->name
);
3535 memcpy(priv
->channels
, mwl8k_channels
, sizeof(mwl8k_channels
));
3536 priv
->band
.band
= IEEE80211_BAND_2GHZ
;
3537 priv
->band
.channels
= priv
->channels
;
3538 priv
->band
.n_channels
= ARRAY_SIZE(mwl8k_channels
);
3539 priv
->band
.bitrates
= priv
->rates
;
3540 priv
->band
.n_bitrates
= ARRAY_SIZE(mwl8k_rates
);
3541 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &priv
->band
;
3543 BUILD_BUG_ON(sizeof(priv
->rates
) != sizeof(mwl8k_rates
));
3544 memcpy(priv
->rates
, mwl8k_rates
, sizeof(mwl8k_rates
));
3547 * Extra headroom is the size of the required DMA header
3548 * minus the size of the smallest 802.11 frame (CTS frame).
3550 hw
->extra_tx_headroom
=
3551 sizeof(struct mwl8k_dma_data
) - sizeof(struct ieee80211_cts
);
3553 hw
->channel_change_time
= 10;
3555 hw
->queues
= MWL8K_TX_QUEUES
;
3557 hw
->wiphy
->interface_modes
=
3558 BIT(NL80211_IFTYPE_STATION
) | BIT(NL80211_IFTYPE_MONITOR
);
3560 /* Set rssi and noise values to dBm */
3561 hw
->flags
|= (IEEE80211_HW_SIGNAL_DBM
| IEEE80211_HW_NOISE_DBM
);
3562 hw
->vif_data_size
= sizeof(struct mwl8k_vif
);
3565 /* Set default radio state and preamble */
3566 priv
->radio_preamble
= MWL8K_RADIO_DEFAULT_PREAMBLE
;
3567 priv
->radio_state
= MWL8K_RADIO_DISABLE
;
3569 /* Finalize join worker */
3570 INIT_WORK(&priv
->finalize_join_worker
, mwl8k_finalize_join_worker
);
3572 /* TX reclaim tasklet */
3573 tasklet_init(&priv
->tx_reclaim_task
,
3574 mwl8k_tx_reclaim_handler
, (unsigned long)hw
);
3575 tasklet_disable(&priv
->tx_reclaim_task
);
3577 /* Config workthread */
3578 priv
->config_wq
= create_singlethread_workqueue("mwl8k_config");
3579 if (priv
->config_wq
== NULL
)
3582 /* Power management cookie */
3583 priv
->cookie
= pci_alloc_consistent(priv
->pdev
, 4, &priv
->cookie_dma
);
3584 if (priv
->cookie
== NULL
)
3587 rc
= mwl8k_rxq_init(hw
, 0);
3590 rxq_refill(hw
, 0, INT_MAX
);
3592 spin_lock_init(&priv
->tx_lock
);
3594 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++) {
3595 rc
= mwl8k_txq_init(hw
, i
);
3597 goto err_free_queues
;
3600 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
3602 iowrite32(priv
->int_mask
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3603 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL
);
3604 iowrite32(0xffffffff, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK
);
3606 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
3607 IRQF_SHARED
, MWL8K_NAME
, hw
);
3609 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
3611 goto err_free_queues
;
3614 /* Reset firmware and hardware */
3615 mwl8k_hw_reset(priv
);
3617 /* Ask userland hotplug daemon for the device firmware */
3618 rc
= mwl8k_request_firmware(priv
, (u32
)id
->driver_data
);
3620 printk(KERN_ERR
"%s: Firmware files not found\n", priv
->name
);
3624 /* Load firmware into hardware */
3625 rc
= mwl8k_load_firmware(priv
);
3627 printk(KERN_ERR
"%s: Cannot start firmware\n", priv
->name
);
3628 goto err_stop_firmware
;
3631 /* Reclaim memory once firmware is successfully loaded */
3632 mwl8k_release_firmware(priv
);
3635 * Temporarily enable interrupts. Initial firmware host
3636 * commands use interrupts and avoids polling. Disable
3637 * interrupts when done.
3639 priv
->int_mask
|= MWL8K_A2H_EVENTS
;
3641 iowrite32(priv
->int_mask
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3643 /* Get config data, mac addrs etc */
3644 rc
= mwl8k_cmd_get_hw_spec(hw
);
3646 printk(KERN_ERR
"%s: Cannot initialise firmware\n", priv
->name
);
3647 goto err_stop_firmware
;
3650 /* Turn radio off */
3651 rc
= mwl8k_cmd_802_11_radio_control(hw
, MWL8K_RADIO_DISABLE
);
3653 printk(KERN_ERR
"%s: Cannot disable\n", priv
->name
);
3654 goto err_stop_firmware
;
3657 /* Disable interrupts */
3658 spin_lock_irq(&priv
->tx_lock
);
3659 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3660 spin_unlock_irq(&priv
->tx_lock
);
3661 free_irq(priv
->pdev
->irq
, hw
);
3663 rc
= ieee80211_register_hw(hw
);
3665 printk(KERN_ERR
"%s: Cannot register device\n", priv
->name
);
3666 goto err_stop_firmware
;
3669 fw
= (u8
*)&priv
->fw_rev
;
3670 printk(KERN_INFO
"%s: 88W%u %s\n", priv
->name
, priv
->part_num
,
3672 printk(KERN_INFO
"%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n",
3673 priv
->name
, MWL8K_VERSION
, fw
[3], fw
[2], fw
[1], fw
[0]);
3674 printk(KERN_INFO
"%s: MAC Address: %s\n", priv
->name
,
3675 print_mac(mac
, hw
->wiphy
->perm_addr
));
3680 mwl8k_hw_reset(priv
);
3681 mwl8k_release_firmware(priv
);
3684 spin_lock_irq(&priv
->tx_lock
);
3685 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3686 spin_unlock_irq(&priv
->tx_lock
);
3687 free_irq(priv
->pdev
->irq
, hw
);
3690 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3691 mwl8k_txq_deinit(hw
, i
);
3692 mwl8k_rxq_deinit(hw
, 0);
3695 if (priv
->cookie
!= NULL
)
3696 pci_free_consistent(priv
->pdev
, 4,
3697 priv
->cookie
, priv
->cookie_dma
);
3699 if (priv
->regs
!= NULL
)
3700 pci_iounmap(pdev
, priv
->regs
);
3702 if (priv
->config_wq
!= NULL
)
3703 destroy_workqueue(priv
->config_wq
);
3705 pci_set_drvdata(pdev
, NULL
);
3706 ieee80211_free_hw(hw
);
3709 pci_release_regions(pdev
);
3710 pci_disable_device(pdev
);
3715 static void __devexit
mwl8k_shutdown(struct pci_dev
*pdev
)
3717 printk(KERN_ERR
"===>%s(%u)\n", __func__
, __LINE__
);
3720 static void __devexit
mwl8k_remove(struct pci_dev
*pdev
)
3722 struct ieee80211_hw
*hw
= pci_get_drvdata(pdev
);
3723 struct mwl8k_priv
*priv
;
3730 ieee80211_stop_queues(hw
);
3732 /* Remove tx reclaim tasklet */
3733 tasklet_kill(&priv
->tx_reclaim_task
);
3735 /* Stop config thread */
3736 destroy_workqueue(priv
->config_wq
);
3739 mwl8k_hw_reset(priv
);
3741 /* Return all skbs to mac80211 */
3742 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3743 mwl8k_txq_reclaim(hw
, i
, 1);
3745 ieee80211_unregister_hw(hw
);
3747 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3748 mwl8k_txq_deinit(hw
, i
);
3750 mwl8k_rxq_deinit(hw
, 0);
3752 pci_free_consistent(priv
->pdev
, 4,
3753 priv
->cookie
, priv
->cookie_dma
);
3755 pci_iounmap(pdev
, priv
->regs
);
3756 pci_set_drvdata(pdev
, NULL
);
3757 ieee80211_free_hw(hw
);
3758 pci_release_regions(pdev
);
3759 pci_disable_device(pdev
);
3762 static struct pci_driver mwl8k_driver
= {
3764 .id_table
= mwl8k_table
,
3765 .probe
= mwl8k_probe
,
3766 .remove
= __devexit_p(mwl8k_remove
),
3767 .shutdown
= __devexit_p(mwl8k_shutdown
),
3770 static int __init
mwl8k_init(void)
3772 return pci_register_driver(&mwl8k_driver
);
3775 static void __exit
mwl8k_exit(void)
3777 pci_unregister_driver(&mwl8k_driver
);
3780 module_init(mwl8k_init
);
3781 module_exit(mwl8k_exit
);