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
;
114 struct mwl8k_tx_queue
{
115 /* hw transmits here */
118 /* sw appends here */
121 struct ieee80211_tx_queue_stats tx_stats
;
122 struct mwl8k_tx_desc
*tx_desc_area
;
123 dma_addr_t tx_desc_dma
;
124 struct sk_buff
**tx_skb
;
127 /* Pointers to the firmware data and meta information about it. */
128 struct mwl8k_firmware
{
130 struct firmware
*ucode
;
132 /* Boot helper code */
133 struct firmware
*helper
;
138 struct ieee80211_hw
*hw
;
140 struct pci_dev
*pdev
;
143 /* firmware files and meta data */
144 struct mwl8k_firmware fw
;
147 /* firmware access */
148 struct mutex fw_mutex
;
149 struct task_struct
*fw_mutex_owner
;
151 struct completion
*tx_wait
;
152 struct completion
*hostcmd_wait
;
154 /* lock held over TX and TX reap */
157 struct ieee80211_vif
*vif
;
159 struct ieee80211_channel
*current_channel
;
161 /* power management status cookie from firmware */
163 dma_addr_t cookie_dma
;
170 * Running count of TX packets in flight, to avoid
171 * iterating over the transmit rings each time.
175 struct mwl8k_rx_queue rxq
[MWL8K_RX_QUEUES
];
176 struct mwl8k_tx_queue txq
[MWL8K_TX_QUEUES
];
179 struct ieee80211_supported_band band
;
180 struct ieee80211_channel channels
[14];
181 struct ieee80211_rate rates
[12];
184 bool radio_short_preamble
;
187 /* XXX need to convert this to handle multiple interfaces */
189 u8 capture_bssid
[ETH_ALEN
];
190 struct sk_buff
*beacon_skb
;
193 * This FJ worker has to be global as it is scheduled from the
194 * RX handler. At this point we don't know which interface it
195 * belongs to until the list of bssids waiting to complete join
198 struct work_struct finalize_join_worker
;
200 /* Tasklet to reclaim TX descriptors and buffers after tx */
201 struct tasklet_struct tx_reclaim_task
;
203 /* Work thread to serialize configuration requests */
204 struct workqueue_struct
*config_wq
;
207 /* Per interface specific private data */
209 /* backpointer to parent config block */
210 struct mwl8k_priv
*priv
;
212 /* BSS config of AP or IBSS from mac80211*/
213 struct ieee80211_bss_conf bss_info
;
215 /* BSSID of AP or IBSS */
217 u8 mac_addr
[ETH_ALEN
];
220 * Subset of supported legacy rates.
221 * Intersection of AP and STA supported rates.
223 struct ieee80211_rate legacy_rates
[12];
225 /* number of supported legacy rates */
228 /* Index into station database.Returned by update_sta_db call */
231 /* Non AMPDU sequence number assigned by driver */
235 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
237 static const struct ieee80211_channel mwl8k_channels
[] = {
238 { .center_freq
= 2412, .hw_value
= 1, },
239 { .center_freq
= 2417, .hw_value
= 2, },
240 { .center_freq
= 2422, .hw_value
= 3, },
241 { .center_freq
= 2427, .hw_value
= 4, },
242 { .center_freq
= 2432, .hw_value
= 5, },
243 { .center_freq
= 2437, .hw_value
= 6, },
244 { .center_freq
= 2442, .hw_value
= 7, },
245 { .center_freq
= 2447, .hw_value
= 8, },
246 { .center_freq
= 2452, .hw_value
= 9, },
247 { .center_freq
= 2457, .hw_value
= 10, },
248 { .center_freq
= 2462, .hw_value
= 11, },
251 static const struct ieee80211_rate mwl8k_rates
[] = {
252 { .bitrate
= 10, .hw_value
= 2, },
253 { .bitrate
= 20, .hw_value
= 4, },
254 { .bitrate
= 55, .hw_value
= 11, },
255 { .bitrate
= 60, .hw_value
= 12, },
256 { .bitrate
= 90, .hw_value
= 18, },
257 { .bitrate
= 110, .hw_value
= 22, },
258 { .bitrate
= 120, .hw_value
= 24, },
259 { .bitrate
= 180, .hw_value
= 36, },
260 { .bitrate
= 240, .hw_value
= 48, },
261 { .bitrate
= 360, .hw_value
= 72, },
262 { .bitrate
= 480, .hw_value
= 96, },
263 { .bitrate
= 540, .hw_value
= 108, },
266 /* Set or get info from Firmware */
267 #define MWL8K_CMD_SET 0x0001
268 #define MWL8K_CMD_GET 0x0000
270 /* Firmware command codes */
271 #define MWL8K_CMD_CODE_DNLD 0x0001
272 #define MWL8K_CMD_GET_HW_SPEC 0x0003
273 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
274 #define MWL8K_CMD_GET_STAT 0x0014
275 #define MWL8K_CMD_RADIO_CONTROL 0x001c
276 #define MWL8K_CMD_RF_TX_POWER 0x001e
277 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
278 #define MWL8K_CMD_SET_POST_SCAN 0x0108
279 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
280 #define MWL8K_CMD_SET_AID 0x010d
281 #define MWL8K_CMD_SET_RATE 0x0110
282 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
283 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
284 #define MWL8K_CMD_SET_SLOT 0x0114
285 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
286 #define MWL8K_CMD_SET_WMM_MODE 0x0123
287 #define MWL8K_CMD_MIMO_CONFIG 0x0125
288 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
289 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
290 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
291 #define MWL8K_CMD_UPDATE_STADB 0x1123
293 static const char *mwl8k_cmd_name(u16 cmd
, char *buf
, int bufsize
)
295 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
296 snprintf(buf, bufsize, "%s", #x);\
299 switch (cmd
& ~0x8000) {
300 MWL8K_CMDNAME(CODE_DNLD
);
301 MWL8K_CMDNAME(GET_HW_SPEC
);
302 MWL8K_CMDNAME(MAC_MULTICAST_ADR
);
303 MWL8K_CMDNAME(GET_STAT
);
304 MWL8K_CMDNAME(RADIO_CONTROL
);
305 MWL8K_CMDNAME(RF_TX_POWER
);
306 MWL8K_CMDNAME(SET_PRE_SCAN
);
307 MWL8K_CMDNAME(SET_POST_SCAN
);
308 MWL8K_CMDNAME(SET_RF_CHANNEL
);
309 MWL8K_CMDNAME(SET_AID
);
310 MWL8K_CMDNAME(SET_RATE
);
311 MWL8K_CMDNAME(SET_FINALIZE_JOIN
);
312 MWL8K_CMDNAME(RTS_THRESHOLD
);
313 MWL8K_CMDNAME(SET_SLOT
);
314 MWL8K_CMDNAME(SET_EDCA_PARAMS
);
315 MWL8K_CMDNAME(SET_WMM_MODE
);
316 MWL8K_CMDNAME(MIMO_CONFIG
);
317 MWL8K_CMDNAME(USE_FIXED_RATE
);
318 MWL8K_CMDNAME(ENABLE_SNIFFER
);
319 MWL8K_CMDNAME(SET_RATEADAPT_MODE
);
320 MWL8K_CMDNAME(UPDATE_STADB
);
322 snprintf(buf
, bufsize
, "0x%x", cmd
);
329 /* Hardware and firmware reset */
330 static void mwl8k_hw_reset(struct mwl8k_priv
*priv
)
332 iowrite32(MWL8K_H2A_INT_RESET
,
333 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
334 iowrite32(MWL8K_H2A_INT_RESET
,
335 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
339 /* Release fw image */
340 static void mwl8k_release_fw(struct firmware
**fw
)
344 release_firmware(*fw
);
348 static void mwl8k_release_firmware(struct mwl8k_priv
*priv
)
350 mwl8k_release_fw(&priv
->fw
.ucode
);
351 mwl8k_release_fw(&priv
->fw
.helper
);
354 /* Request fw image */
355 static int mwl8k_request_fw(struct mwl8k_priv
*priv
,
356 const char *fname
, struct firmware
**fw
)
358 /* release current image */
360 mwl8k_release_fw(fw
);
362 return request_firmware((const struct firmware
**)fw
,
363 fname
, &priv
->pdev
->dev
);
366 static int mwl8k_request_firmware(struct mwl8k_priv
*priv
, u32 part_num
)
371 priv
->part_num
= part_num
;
373 snprintf(filename
, sizeof(filename
),
374 "mwl8k/helper_%u.fw", priv
->part_num
);
376 rc
= mwl8k_request_fw(priv
, filename
, &priv
->fw
.helper
);
379 "%s Error requesting helper firmware file %s\n",
380 pci_name(priv
->pdev
), filename
);
384 snprintf(filename
, sizeof(filename
),
385 "mwl8k/fmimage_%u.fw", priv
->part_num
);
387 rc
= mwl8k_request_fw(priv
, filename
, &priv
->fw
.ucode
);
389 printk(KERN_ERR
"%s Error requesting firmware file %s\n",
390 pci_name(priv
->pdev
), filename
);
391 mwl8k_release_fw(&priv
->fw
.helper
);
398 struct mwl8k_cmd_pkt
{
404 } __attribute__((packed
));
410 mwl8k_send_fw_load_cmd(struct mwl8k_priv
*priv
, void *data
, int length
)
412 void __iomem
*regs
= priv
->regs
;
416 dma_addr
= pci_map_single(priv
->pdev
, data
, length
, PCI_DMA_TODEVICE
);
417 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
420 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
421 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
422 iowrite32(MWL8K_H2A_INT_DOORBELL
,
423 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
424 iowrite32(MWL8K_H2A_INT_DUMMY
,
425 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
431 int_code
= ioread32(regs
+ MWL8K_HIU_INT_CODE
);
432 if (int_code
== MWL8K_INT_CODE_CMD_FINISHED
) {
433 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
440 pci_unmap_single(priv
->pdev
, dma_addr
, length
, PCI_DMA_TODEVICE
);
442 return loops
? 0 : -ETIMEDOUT
;
445 static int mwl8k_load_fw_image(struct mwl8k_priv
*priv
,
446 const u8
*data
, size_t length
)
448 struct mwl8k_cmd_pkt
*cmd
;
452 cmd
= kmalloc(sizeof(*cmd
) + 256, GFP_KERNEL
);
456 cmd
->code
= cpu_to_le16(MWL8K_CMD_CODE_DNLD
);
462 int block_size
= length
> 256 ? 256 : length
;
464 memcpy(cmd
->payload
, data
+ done
, block_size
);
465 cmd
->length
= cpu_to_le16(block_size
);
467 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
,
468 sizeof(*cmd
) + block_size
);
473 length
-= block_size
;
478 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
, sizeof(*cmd
));
486 static int mwl8k_feed_fw_image(struct mwl8k_priv
*priv
,
487 const u8
*data
, size_t length
)
489 unsigned char *buffer
;
490 int may_continue
, rc
= 0;
491 u32 done
, prev_block_size
;
493 buffer
= kmalloc(1024, GFP_KERNEL
);
500 while (may_continue
> 0) {
503 block_size
= ioread32(priv
->regs
+ MWL8K_HIU_SCRATCH
);
504 if (block_size
& 1) {
508 done
+= prev_block_size
;
509 length
-= prev_block_size
;
512 if (block_size
> 1024 || block_size
> length
) {
522 if (block_size
== 0) {
529 prev_block_size
= block_size
;
530 memcpy(buffer
, data
+ done
, block_size
);
532 rc
= mwl8k_send_fw_load_cmd(priv
, buffer
, block_size
);
537 if (!rc
&& length
!= 0)
545 static int mwl8k_load_firmware(struct mwl8k_priv
*priv
)
549 const u8
*ucode
= priv
->fw
.ucode
->data
;
550 size_t ucode_len
= priv
->fw
.ucode
->size
;
551 const u8
*helper
= priv
->fw
.helper
->data
;
552 size_t helper_len
= priv
->fw
.helper
->size
;
554 if (!memcmp(ucode
, "\x01\x00\x00\x00", 4)) {
555 rc
= mwl8k_load_fw_image(priv
, helper
, helper_len
);
557 printk(KERN_ERR
"%s: unable to load firmware "
558 "helper image\n", pci_name(priv
->pdev
));
563 rc
= mwl8k_feed_fw_image(priv
, ucode
, ucode_len
);
565 rc
= mwl8k_load_fw_image(priv
, ucode
, ucode_len
);
569 printk(KERN_ERR
"%s: unable to load firmware data\n",
570 pci_name(priv
->pdev
));
574 iowrite32(MWL8K_MODE_STA
, priv
->regs
+ MWL8K_HIU_GEN_PTR
);
579 if (ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
)
580 == MWL8K_FWSTA_READY
)
585 return loops
? 0 : -ETIMEDOUT
;
590 * Defines shared between transmission and reception.
592 /* HT control fields for firmware */
597 } __attribute__((packed
));
599 /* Firmware Station database operations */
600 #define MWL8K_STA_DB_ADD_ENTRY 0
601 #define MWL8K_STA_DB_MODIFY_ENTRY 1
602 #define MWL8K_STA_DB_DEL_ENTRY 2
603 #define MWL8K_STA_DB_FLUSH 3
605 /* Peer Entry flags - used to define the type of the peer node */
606 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
608 #define MWL8K_IEEE_LEGACY_DATA_RATES 12
609 #define MWL8K_MCS_BITMAP_SIZE 16
611 struct peer_capability_info
{
612 /* Peer type - AP vs. STA. */
615 /* Basic 802.11 capabilities from assoc resp. */
618 /* Set if peer supports 802.11n high throughput (HT). */
621 /* Valid if HT is supported. */
623 __u8 extended_ht_caps
;
624 struct ewc_ht_info ewc_info
;
626 /* Legacy rate table. Intersection of our rates and peer rates. */
627 __u8 legacy_rates
[MWL8K_IEEE_LEGACY_DATA_RATES
];
629 /* HT rate table. Intersection of our rates and peer rates. */
630 __u8 ht_rates
[MWL8K_MCS_BITMAP_SIZE
];
633 /* If set, interoperability mode, no proprietary extensions. */
637 __le16 amsdu_enabled
;
638 } __attribute__((packed
));
640 /* Inline functions to manipulate QoS field in data descriptor. */
641 static inline u16
mwl8k_qos_setbit_eosp(u16 qos
)
643 u16 val_mask
= 1 << 4;
645 /* End of Service Period Bit 4 */
646 return qos
| val_mask
;
649 static inline u16
mwl8k_qos_setbit_ack(u16 qos
, u8 ack_policy
)
653 u16 qos_mask
= ~(val_mask
<< shift
);
655 /* Ack Policy Bit 5-6 */
656 return (qos
& qos_mask
) | ((ack_policy
& val_mask
) << shift
);
659 static inline u16
mwl8k_qos_setbit_amsdu(u16 qos
)
661 u16 val_mask
= 1 << 7;
663 /* AMSDU present Bit 7 */
664 return qos
| val_mask
;
667 static inline u16
mwl8k_qos_setbit_qlen(u16 qos
, u8 len
)
671 u16 qos_mask
= ~(val_mask
<< shift
);
673 /* Queue Length Bits 8-15 */
674 return (qos
& qos_mask
) | ((len
& val_mask
) << shift
);
677 /* DMA header used by firmware and hardware. */
678 struct mwl8k_dma_data
{
680 struct ieee80211_hdr wh
;
681 } __attribute__((packed
));
683 /* Routines to add/remove DMA header from skb. */
684 static inline void mwl8k_remove_dma_header(struct sk_buff
*skb
)
686 struct mwl8k_dma_data
*tr
= (struct mwl8k_dma_data
*)skb
->data
;
687 void *dst
, *src
= &tr
->wh
;
688 int hdrlen
= ieee80211_hdrlen(tr
->wh
.frame_control
);
689 u16 space
= sizeof(struct mwl8k_dma_data
) - hdrlen
;
691 dst
= (void *)tr
+ space
;
693 memmove(dst
, src
, hdrlen
);
694 skb_pull(skb
, space
);
698 static inline void mwl8k_add_dma_header(struct sk_buff
*skb
)
700 struct ieee80211_hdr
*wh
;
702 struct mwl8k_dma_data
*tr
;
704 wh
= (struct ieee80211_hdr
*)skb
->data
;
705 hdrlen
= ieee80211_hdrlen(wh
->frame_control
);
709 * Copy up/down the 802.11 header; the firmware requires
710 * we present a 2-byte payload length followed by a
711 * 4-address header (w/o QoS), followed (optionally) by
712 * any WEP/ExtIV header (but only filled in for CCMP).
714 if (hdrlen
!= sizeof(struct mwl8k_dma_data
))
715 skb_push(skb
, sizeof(struct mwl8k_dma_data
) - hdrlen
);
717 tr
= (struct mwl8k_dma_data
*)skb
->data
;
719 memmove(&tr
->wh
, wh
, hdrlen
);
722 memset(tr
->wh
.addr4
, 0, ETH_ALEN
);
725 * Firmware length is the length of the fully formed "802.11
726 * payload". That is, everything except for the 802.11 header.
727 * This includes all crypto material including the MIC.
729 tr
->fwlen
= cpu_to_le16(pktlen
- hdrlen
);
736 #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02
738 struct mwl8k_rx_desc
{
742 __le32 pkt_phys_addr
;
743 __le32 next_rx_desc_phys_addr
;
753 } __attribute__((packed
));
755 #define MWL8K_RX_DESCS 256
756 #define MWL8K_RX_MAXSZ 3800
758 static int mwl8k_rxq_init(struct ieee80211_hw
*hw
, int index
)
760 struct mwl8k_priv
*priv
= hw
->priv
;
761 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
765 rxq
->rx_desc_count
= 0;
769 size
= MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
);
772 pci_alloc_consistent(priv
->pdev
, size
, &rxq
->rx_desc_dma
);
773 if (rxq
->rx_desc_area
== NULL
) {
774 printk(KERN_ERR
"%s: failed to alloc RX descriptors\n",
778 memset(rxq
->rx_desc_area
, 0, size
);
780 rxq
->rx_skb
= kmalloc(MWL8K_RX_DESCS
*
781 sizeof(*rxq
->rx_skb
), GFP_KERNEL
);
782 if (rxq
->rx_skb
== NULL
) {
783 printk(KERN_ERR
"%s: failed to alloc RX skbuff list\n",
785 pci_free_consistent(priv
->pdev
, size
,
786 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
789 memset(rxq
->rx_skb
, 0, MWL8K_RX_DESCS
* sizeof(*rxq
->rx_skb
));
791 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
792 struct mwl8k_rx_desc
*rx_desc
;
795 rx_desc
= rxq
->rx_desc_area
+ i
;
796 nexti
= (i
+ 1) % MWL8K_RX_DESCS
;
798 rx_desc
->next_rx_desc_phys_addr
=
799 cpu_to_le32(rxq
->rx_desc_dma
800 + nexti
* sizeof(*rx_desc
));
801 rx_desc
->rx_ctrl
= MWL8K_RX_CTRL_OWNED_BY_HOST
;
807 static int rxq_refill(struct ieee80211_hw
*hw
, int index
, int limit
)
809 struct mwl8k_priv
*priv
= hw
->priv
;
810 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
814 while (rxq
->rx_desc_count
< MWL8K_RX_DESCS
&& limit
--) {
818 skb
= dev_alloc_skb(MWL8K_RX_MAXSZ
);
822 rxq
->rx_desc_count
++;
825 rxq
->rx_tail
= (rx
+ 1) % MWL8K_RX_DESCS
;
827 rxq
->rx_desc_area
[rx
].pkt_phys_addr
=
828 cpu_to_le32(pci_map_single(priv
->pdev
, skb
->data
,
829 MWL8K_RX_MAXSZ
, DMA_FROM_DEVICE
));
831 rxq
->rx_desc_area
[rx
].pkt_len
= cpu_to_le16(MWL8K_RX_MAXSZ
);
832 rxq
->rx_skb
[rx
] = skb
;
834 rxq
->rx_desc_area
[rx
].rx_ctrl
= 0;
842 /* Must be called only when the card's reception is completely halted */
843 static void mwl8k_rxq_deinit(struct ieee80211_hw
*hw
, int index
)
845 struct mwl8k_priv
*priv
= hw
->priv
;
846 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
849 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
850 if (rxq
->rx_skb
[i
] != NULL
) {
853 addr
= le32_to_cpu(rxq
->rx_desc_area
[i
].pkt_phys_addr
);
854 pci_unmap_single(priv
->pdev
, addr
, MWL8K_RX_MAXSZ
,
856 kfree_skb(rxq
->rx_skb
[i
]);
857 rxq
->rx_skb
[i
] = NULL
;
864 pci_free_consistent(priv
->pdev
,
865 MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
),
866 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
867 rxq
->rx_desc_area
= NULL
;
872 * Scan a list of BSSIDs to process for finalize join.
873 * Allows for extension to process multiple BSSIDs.
876 mwl8k_capture_bssid(struct mwl8k_priv
*priv
, struct ieee80211_hdr
*wh
)
878 return priv
->capture_beacon
&&
879 ieee80211_is_beacon(wh
->frame_control
) &&
880 !compare_ether_addr(wh
->addr3
, priv
->capture_bssid
);
883 static inline void mwl8k_save_beacon(struct mwl8k_priv
*priv
,
886 priv
->capture_beacon
= false;
887 memset(priv
->capture_bssid
, 0, ETH_ALEN
);
890 * Use GFP_ATOMIC as rxq_process is called from
891 * the primary interrupt handler, memory allocation call
894 priv
->beacon_skb
= skb_copy(skb
, GFP_ATOMIC
);
895 if (priv
->beacon_skb
!= NULL
)
896 queue_work(priv
->config_wq
,
897 &priv
->finalize_join_worker
);
900 static int rxq_process(struct ieee80211_hw
*hw
, int index
, int limit
)
902 struct mwl8k_priv
*priv
= hw
->priv
;
903 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
907 while (rxq
->rx_desc_count
&& limit
--) {
908 struct mwl8k_rx_desc
*rx_desc
;
910 struct ieee80211_rx_status status
;
912 struct ieee80211_hdr
*wh
;
914 rx_desc
= rxq
->rx_desc_area
+ rxq
->rx_head
;
915 if (!(rx_desc
->rx_ctrl
& MWL8K_RX_CTRL_OWNED_BY_HOST
))
919 skb
= rxq
->rx_skb
[rxq
->rx_head
];
922 rxq
->rx_skb
[rxq
->rx_head
] = NULL
;
924 rxq
->rx_head
= (rxq
->rx_head
+ 1) % MWL8K_RX_DESCS
;
925 rxq
->rx_desc_count
--;
927 addr
= le32_to_cpu(rx_desc
->pkt_phys_addr
);
928 pci_unmap_single(priv
->pdev
, addr
,
929 MWL8K_RX_MAXSZ
, PCI_DMA_FROMDEVICE
);
931 skb_put(skb
, le16_to_cpu(rx_desc
->pkt_len
));
932 mwl8k_remove_dma_header(skb
);
934 wh
= (struct ieee80211_hdr
*)skb
->data
;
937 * Check for pending join operation. save a copy of
938 * the beacon and schedule a tasklet to send finalize
939 * join command to the firmware.
941 if (mwl8k_capture_bssid(priv
, wh
))
942 mwl8k_save_beacon(priv
, skb
);
944 memset(&status
, 0, sizeof(status
));
946 status
.signal
= -rx_desc
->rssi
;
947 status
.noise
= -rx_desc
->noise_level
;
948 status
.qual
= rx_desc
->link_quality
;
952 status
.band
= IEEE80211_BAND_2GHZ
;
953 status
.freq
= ieee80211_channel_to_frequency(rx_desc
->channel
);
954 memcpy(IEEE80211_SKB_RXCB(skb
), &status
, sizeof(status
));
955 ieee80211_rx_irqsafe(hw
, skb
);
965 * Packet transmission.
968 /* Transmit queue assignment. */
970 MWL8K_WME_AC_BK
= 0, /* background access */
971 MWL8K_WME_AC_BE
= 1, /* best effort access */
972 MWL8K_WME_AC_VI
= 2, /* video access */
973 MWL8K_WME_AC_VO
= 3, /* voice access */
976 /* Transmit packet ACK policy */
977 #define MWL8K_TXD_ACK_POLICY_NORMAL 0
978 #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3
980 #define GET_TXQ(_ac) (\
981 ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \
982 ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \
983 ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \
986 #define MWL8K_TXD_STATUS_OK 0x00000001
987 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
988 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
989 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
990 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
992 struct mwl8k_tx_desc
{
997 __le32 pkt_phys_addr
;
999 __u8 dest_MAC_addr
[ETH_ALEN
];
1000 __le32 next_tx_desc_phys_addr
;
1005 } __attribute__((packed
));
1007 #define MWL8K_TX_DESCS 128
1009 static int mwl8k_txq_init(struct ieee80211_hw
*hw
, int index
)
1011 struct mwl8k_priv
*priv
= hw
->priv
;
1012 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1016 memset(&txq
->tx_stats
, 0, sizeof(struct ieee80211_tx_queue_stats
));
1017 txq
->tx_stats
.limit
= MWL8K_TX_DESCS
;
1021 size
= MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
);
1024 pci_alloc_consistent(priv
->pdev
, size
, &txq
->tx_desc_dma
);
1025 if (txq
->tx_desc_area
== NULL
) {
1026 printk(KERN_ERR
"%s: failed to alloc TX descriptors\n",
1030 memset(txq
->tx_desc_area
, 0, size
);
1032 txq
->tx_skb
= kmalloc(MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
),
1034 if (txq
->tx_skb
== NULL
) {
1035 printk(KERN_ERR
"%s: failed to alloc TX skbuff list\n",
1037 pci_free_consistent(priv
->pdev
, size
,
1038 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1041 memset(txq
->tx_skb
, 0, MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
));
1043 for (i
= 0; i
< MWL8K_TX_DESCS
; i
++) {
1044 struct mwl8k_tx_desc
*tx_desc
;
1047 tx_desc
= txq
->tx_desc_area
+ i
;
1048 nexti
= (i
+ 1) % MWL8K_TX_DESCS
;
1050 tx_desc
->status
= 0;
1051 tx_desc
->next_tx_desc_phys_addr
=
1052 cpu_to_le32(txq
->tx_desc_dma
+
1053 nexti
* sizeof(*tx_desc
));
1059 static inline void mwl8k_tx_start(struct mwl8k_priv
*priv
)
1061 iowrite32(MWL8K_H2A_INT_PPA_READY
,
1062 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1063 iowrite32(MWL8K_H2A_INT_DUMMY
,
1064 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1065 ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
);
1068 static inline int mwl8k_txq_busy(struct mwl8k_priv
*priv
)
1070 return priv
->pending_tx_pkts
;
1073 struct mwl8k_txq_info
{
1082 static int mwl8k_scan_tx_ring(struct mwl8k_priv
*priv
,
1083 struct mwl8k_txq_info
*txinfo
)
1085 int count
, desc
, status
;
1086 struct mwl8k_tx_queue
*txq
;
1087 struct mwl8k_tx_desc
*tx_desc
;
1090 memset(txinfo
, 0, MWL8K_TX_QUEUES
* sizeof(struct mwl8k_txq_info
));
1092 spin_lock_bh(&priv
->tx_lock
);
1093 for (count
= 0; count
< MWL8K_TX_QUEUES
; count
++) {
1094 txq
= priv
->txq
+ count
;
1095 txinfo
[count
].len
= txq
->tx_stats
.len
;
1096 txinfo
[count
].head
= txq
->tx_head
;
1097 txinfo
[count
].tail
= txq
->tx_tail
;
1098 for (desc
= 0; desc
< MWL8K_TX_DESCS
; desc
++) {
1099 tx_desc
= txq
->tx_desc_area
+ desc
;
1100 status
= le32_to_cpu(tx_desc
->status
);
1102 if (status
& MWL8K_TXD_STATUS_FW_OWNED
)
1103 txinfo
[count
].fw_owned
++;
1105 txinfo
[count
].drv_owned
++;
1107 if (tx_desc
->pkt_len
== 0)
1108 txinfo
[count
].unused
++;
1111 spin_unlock_bh(&priv
->tx_lock
);
1117 * Must be called with hw->fw_mutex held and tx queues stopped.
1119 static int mwl8k_tx_wait_empty(struct ieee80211_hw
*hw
)
1121 struct mwl8k_priv
*priv
= hw
->priv
;
1122 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1124 unsigned long timeout
;
1128 spin_lock_bh(&priv
->tx_lock
);
1129 count
= mwl8k_txq_busy(priv
);
1131 priv
->tx_wait
= &cmd_wait
;
1133 mwl8k_tx_start(priv
);
1135 spin_unlock_bh(&priv
->tx_lock
);
1138 struct mwl8k_txq_info txinfo
[MWL8K_TX_QUEUES
];
1142 timeout
= wait_for_completion_timeout(&cmd_wait
,
1143 msecs_to_jiffies(5000));
1147 spin_lock_bh(&priv
->tx_lock
);
1148 priv
->tx_wait
= NULL
;
1149 newcount
= mwl8k_txq_busy(priv
);
1150 spin_unlock_bh(&priv
->tx_lock
);
1152 printk(KERN_ERR
"%s(%u) TIMEDOUT:5000ms Pend:%u-->%u\n",
1153 __func__
, __LINE__
, count
, newcount
);
1155 mwl8k_scan_tx_ring(priv
, txinfo
);
1156 for (index
= 0; index
< MWL8K_TX_QUEUES
; index
++)
1158 "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n",
1163 txinfo
[index
].fw_owned
,
1164 txinfo
[index
].drv_owned
,
1165 txinfo
[index
].unused
);
1173 #define MWL8K_TXD_SUCCESS(status) \
1174 ((status) & (MWL8K_TXD_STATUS_OK | \
1175 MWL8K_TXD_STATUS_OK_RETRY | \
1176 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1178 static void mwl8k_txq_reclaim(struct ieee80211_hw
*hw
, int index
, int force
)
1180 struct mwl8k_priv
*priv
= hw
->priv
;
1181 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1184 while (txq
->tx_stats
.len
> 0) {
1186 struct mwl8k_tx_desc
*tx_desc
;
1189 struct sk_buff
*skb
;
1190 struct ieee80211_tx_info
*info
;
1194 tx_desc
= txq
->tx_desc_area
+ tx
;
1196 status
= le32_to_cpu(tx_desc
->status
);
1198 if (status
& MWL8K_TXD_STATUS_FW_OWNED
) {
1202 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED
);
1205 txq
->tx_head
= (tx
+ 1) % MWL8K_TX_DESCS
;
1206 BUG_ON(txq
->tx_stats
.len
== 0);
1207 txq
->tx_stats
.len
--;
1208 priv
->pending_tx_pkts
--;
1210 addr
= le32_to_cpu(tx_desc
->pkt_phys_addr
);
1211 size
= le16_to_cpu(tx_desc
->pkt_len
);
1212 skb
= txq
->tx_skb
[tx
];
1213 txq
->tx_skb
[tx
] = NULL
;
1215 BUG_ON(skb
== NULL
);
1216 pci_unmap_single(priv
->pdev
, addr
, size
, PCI_DMA_TODEVICE
);
1218 mwl8k_remove_dma_header(skb
);
1220 /* Mark descriptor as unused */
1221 tx_desc
->pkt_phys_addr
= 0;
1222 tx_desc
->pkt_len
= 0;
1224 info
= IEEE80211_SKB_CB(skb
);
1225 ieee80211_tx_info_clear_status(info
);
1226 if (MWL8K_TXD_SUCCESS(status
))
1227 info
->flags
|= IEEE80211_TX_STAT_ACK
;
1229 ieee80211_tx_status_irqsafe(hw
, skb
);
1234 if (wake
&& priv
->radio_on
&& !mutex_is_locked(&priv
->fw_mutex
))
1235 ieee80211_wake_queue(hw
, index
);
1238 /* must be called only when the card's transmit is completely halted */
1239 static void mwl8k_txq_deinit(struct ieee80211_hw
*hw
, int index
)
1241 struct mwl8k_priv
*priv
= hw
->priv
;
1242 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1244 mwl8k_txq_reclaim(hw
, index
, 1);
1249 pci_free_consistent(priv
->pdev
,
1250 MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
),
1251 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1252 txq
->tx_desc_area
= NULL
;
1256 mwl8k_txq_xmit(struct ieee80211_hw
*hw
, int index
, struct sk_buff
*skb
)
1258 struct mwl8k_priv
*priv
= hw
->priv
;
1259 struct ieee80211_tx_info
*tx_info
;
1260 struct mwl8k_vif
*mwl8k_vif
;
1261 struct ieee80211_hdr
*wh
;
1262 struct mwl8k_tx_queue
*txq
;
1263 struct mwl8k_tx_desc
*tx
;
1269 wh
= (struct ieee80211_hdr
*)skb
->data
;
1270 if (ieee80211_is_data_qos(wh
->frame_control
))
1271 qos
= le16_to_cpu(*((__le16
*)ieee80211_get_qos_ctl(wh
)));
1275 mwl8k_add_dma_header(skb
);
1276 wh
= &((struct mwl8k_dma_data
*)skb
->data
)->wh
;
1278 tx_info
= IEEE80211_SKB_CB(skb
);
1279 mwl8k_vif
= MWL8K_VIF(tx_info
->control
.vif
);
1281 if (tx_info
->flags
& IEEE80211_TX_CTL_ASSIGN_SEQ
) {
1282 u16 seqno
= mwl8k_vif
->seqno
;
1284 wh
->seq_ctrl
&= cpu_to_le16(IEEE80211_SCTL_FRAG
);
1285 wh
->seq_ctrl
|= cpu_to_le16(seqno
<< 4);
1286 mwl8k_vif
->seqno
= seqno
++ % 4096;
1289 /* Setup firmware control bit fields for each frame type. */
1292 if (ieee80211_is_mgmt(wh
->frame_control
) ||
1293 ieee80211_is_ctl(wh
->frame_control
)) {
1295 qos
= mwl8k_qos_setbit_eosp(qos
);
1296 /* Set Queue size to unspecified */
1297 qos
= mwl8k_qos_setbit_qlen(qos
, 0xff);
1298 } else if (ieee80211_is_data(wh
->frame_control
)) {
1300 if (is_multicast_ether_addr(wh
->addr1
))
1301 txstatus
|= MWL8K_TXD_STATUS_MULTICAST_TX
;
1303 /* Send pkt in an aggregate if AMPDU frame. */
1304 if (tx_info
->flags
& IEEE80211_TX_CTL_AMPDU
)
1305 qos
= mwl8k_qos_setbit_ack(qos
,
1306 MWL8K_TXD_ACK_POLICY_BLOCKACK
);
1308 qos
= mwl8k_qos_setbit_ack(qos
,
1309 MWL8K_TXD_ACK_POLICY_NORMAL
);
1311 if (qos
& IEEE80211_QOS_CONTROL_A_MSDU_PRESENT
)
1312 qos
= mwl8k_qos_setbit_amsdu(qos
);
1315 dma
= pci_map_single(priv
->pdev
, skb
->data
,
1316 skb
->len
, PCI_DMA_TODEVICE
);
1318 if (pci_dma_mapping_error(priv
->pdev
, dma
)) {
1319 printk(KERN_DEBUG
"%s: failed to dma map skb, "
1320 "dropping TX frame.\n", priv
->name
);
1322 return NETDEV_TX_OK
;
1325 spin_lock_bh(&priv
->tx_lock
);
1327 txq
= priv
->txq
+ index
;
1329 BUG_ON(txq
->tx_skb
[txq
->tx_tail
] != NULL
);
1330 txq
->tx_skb
[txq
->tx_tail
] = skb
;
1332 tx
= txq
->tx_desc_area
+ txq
->tx_tail
;
1333 tx
->data_rate
= txdatarate
;
1334 tx
->tx_priority
= index
;
1335 tx
->qos_control
= cpu_to_le16(qos
);
1336 tx
->pkt_phys_addr
= cpu_to_le32(dma
);
1337 tx
->pkt_len
= cpu_to_le16(skb
->len
);
1339 tx
->peer_id
= mwl8k_vif
->peer_id
;
1341 tx
->status
= cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED
| txstatus
);
1343 txq
->tx_stats
.count
++;
1344 txq
->tx_stats
.len
++;
1345 priv
->pending_tx_pkts
++;
1348 if (txq
->tx_tail
== MWL8K_TX_DESCS
)
1351 if (txq
->tx_head
== txq
->tx_tail
)
1352 ieee80211_stop_queue(hw
, index
);
1354 mwl8k_tx_start(priv
);
1356 spin_unlock_bh(&priv
->tx_lock
);
1358 return NETDEV_TX_OK
;
1365 * We have the following requirements for issuing firmware commands:
1366 * - Some commands require that the packet transmit path is idle when
1367 * the command is issued. (For simplicity, we'll just quiesce the
1368 * transmit path for every command.)
1369 * - There are certain sequences of commands that need to be issued to
1370 * the hardware sequentially, with no other intervening commands.
1372 * This leads to an implementation of a "firmware lock" as a mutex that
1373 * can be taken recursively, and which is taken by both the low-level
1374 * command submission function (mwl8k_post_cmd) as well as any users of
1375 * that function that require issuing of an atomic sequence of commands,
1376 * and quiesces the transmit path whenever it's taken.
1378 static int mwl8k_fw_lock(struct ieee80211_hw
*hw
)
1380 struct mwl8k_priv
*priv
= hw
->priv
;
1382 if (priv
->fw_mutex_owner
!= current
) {
1385 mutex_lock(&priv
->fw_mutex
);
1386 ieee80211_stop_queues(hw
);
1388 rc
= mwl8k_tx_wait_empty(hw
);
1390 ieee80211_wake_queues(hw
);
1391 mutex_unlock(&priv
->fw_mutex
);
1396 priv
->fw_mutex_owner
= current
;
1399 priv
->fw_mutex_depth
++;
1404 static void mwl8k_fw_unlock(struct ieee80211_hw
*hw
)
1406 struct mwl8k_priv
*priv
= hw
->priv
;
1408 if (!--priv
->fw_mutex_depth
) {
1409 ieee80211_wake_queues(hw
);
1410 priv
->fw_mutex_owner
= NULL
;
1411 mutex_unlock(&priv
->fw_mutex
);
1417 * Command processing.
1420 /* Timeout firmware commands after 2000ms */
1421 #define MWL8K_CMD_TIMEOUT_MS 2000
1423 static int mwl8k_post_cmd(struct ieee80211_hw
*hw
, struct mwl8k_cmd_pkt
*cmd
)
1425 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1426 struct mwl8k_priv
*priv
= hw
->priv
;
1427 void __iomem
*regs
= priv
->regs
;
1428 dma_addr_t dma_addr
;
1429 unsigned int dma_size
;
1431 unsigned long timeout
= 0;
1434 cmd
->result
= 0xFFFF;
1435 dma_size
= le16_to_cpu(cmd
->length
);
1436 dma_addr
= pci_map_single(priv
->pdev
, cmd
, dma_size
,
1437 PCI_DMA_BIDIRECTIONAL
);
1438 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
1441 rc
= mwl8k_fw_lock(hw
);
1445 priv
->hostcmd_wait
= &cmd_wait
;
1446 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
1447 iowrite32(MWL8K_H2A_INT_DOORBELL
,
1448 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1449 iowrite32(MWL8K_H2A_INT_DUMMY
,
1450 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1452 timeout
= wait_for_completion_timeout(&cmd_wait
,
1453 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS
));
1455 priv
->hostcmd_wait
= NULL
;
1457 mwl8k_fw_unlock(hw
);
1459 pci_unmap_single(priv
->pdev
, dma_addr
, dma_size
,
1460 PCI_DMA_BIDIRECTIONAL
);
1463 printk(KERN_ERR
"%s: Command %s timeout after %u ms\n",
1465 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1466 MWL8K_CMD_TIMEOUT_MS
);
1469 rc
= cmd
->result
? -EINVAL
: 0;
1471 printk(KERN_ERR
"%s: Command %s error 0x%x\n",
1473 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1483 struct mwl8k_cmd_get_hw_spec
{
1484 struct mwl8k_cmd_pkt header
;
1486 __u8 host_interface
;
1488 __u8 perm_addr
[ETH_ALEN
];
1493 __u8 mcs_bitmap
[16];
1494 __le32 rx_queue_ptr
;
1495 __le32 num_tx_queues
;
1496 __le32 tx_queue_ptrs
[MWL8K_TX_QUEUES
];
1498 __le32 num_tx_desc_per_queue
;
1499 __le32 total_rx_desc
;
1500 } __attribute__((packed
));
1502 static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw
*hw
)
1504 struct mwl8k_priv
*priv
= hw
->priv
;
1505 struct mwl8k_cmd_get_hw_spec
*cmd
;
1509 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1513 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_HW_SPEC
);
1514 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1516 memset(cmd
->perm_addr
, 0xff, sizeof(cmd
->perm_addr
));
1517 cmd
->ps_cookie
= cpu_to_le32(priv
->cookie_dma
);
1518 cmd
->rx_queue_ptr
= cpu_to_le32(priv
->rxq
[0].rx_desc_dma
);
1519 cmd
->num_tx_queues
= cpu_to_le32(MWL8K_TX_QUEUES
);
1520 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
1521 cmd
->tx_queue_ptrs
[i
] = cpu_to_le32(priv
->txq
[i
].tx_desc_dma
);
1522 cmd
->num_tx_desc_per_queue
= cpu_to_le32(MWL8K_TX_DESCS
);
1523 cmd
->total_rx_desc
= cpu_to_le32(MWL8K_RX_DESCS
);
1525 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1528 SET_IEEE80211_PERM_ADDR(hw
, cmd
->perm_addr
);
1529 priv
->num_mcaddrs
= le16_to_cpu(cmd
->num_mcaddrs
);
1530 priv
->fw_rev
= le32_to_cpu(cmd
->fw_rev
);
1531 priv
->hw_rev
= cmd
->hw_rev
;
1539 * CMD_MAC_MULTICAST_ADR.
1541 struct mwl8k_cmd_mac_multicast_adr
{
1542 struct mwl8k_cmd_pkt header
;
1545 __u8 addr
[0][ETH_ALEN
];
1548 #define MWL8K_ENABLE_RX_MULTICAST 0x000F
1550 static struct mwl8k_cmd_pkt
*
1551 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw
*hw
,
1552 int mc_count
, struct dev_addr_list
*mclist
)
1554 struct mwl8k_priv
*priv
= hw
->priv
;
1555 struct mwl8k_cmd_mac_multicast_adr
*cmd
;
1559 if (mc_count
> priv
->num_mcaddrs
)
1560 mc_count
= priv
->num_mcaddrs
;
1562 size
= sizeof(*cmd
) + mc_count
* ETH_ALEN
;
1564 cmd
= kzalloc(size
, GFP_ATOMIC
);
1568 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR
);
1569 cmd
->header
.length
= cpu_to_le16(size
);
1570 cmd
->action
= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST
);
1571 cmd
->numaddr
= cpu_to_le16(mc_count
);
1573 for (i
= 0; i
< mc_count
&& mclist
; i
++) {
1574 if (mclist
->da_addrlen
!= ETH_ALEN
) {
1578 memcpy(cmd
->addr
[i
], mclist
->da_addr
, ETH_ALEN
);
1579 mclist
= mclist
->next
;
1582 return &cmd
->header
;
1586 * CMD_802_11_GET_STAT.
1588 struct mwl8k_cmd_802_11_get_stat
{
1589 struct mwl8k_cmd_pkt header
;
1592 } __attribute__((packed
));
1594 #define MWL8K_STAT_ACK_FAILURE 9
1595 #define MWL8K_STAT_RTS_FAILURE 12
1596 #define MWL8K_STAT_FCS_ERROR 24
1597 #define MWL8K_STAT_RTS_SUCCESS 11
1599 static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw
*hw
,
1600 struct ieee80211_low_level_stats
*stats
)
1602 struct mwl8k_cmd_802_11_get_stat
*cmd
;
1605 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1609 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_STAT
);
1610 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1611 cmd
->action
= cpu_to_le16(MWL8K_CMD_GET
);
1613 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1615 stats
->dot11ACKFailureCount
=
1616 le32_to_cpu(cmd
->stats
[MWL8K_STAT_ACK_FAILURE
]);
1617 stats
->dot11RTSFailureCount
=
1618 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_FAILURE
]);
1619 stats
->dot11FCSErrorCount
=
1620 le32_to_cpu(cmd
->stats
[MWL8K_STAT_FCS_ERROR
]);
1621 stats
->dot11RTSSuccessCount
=
1622 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_SUCCESS
]);
1630 * CMD_802_11_RADIO_CONTROL.
1632 struct mwl8k_cmd_802_11_radio_control
{
1633 struct mwl8k_cmd_pkt header
;
1637 } __attribute__((packed
));
1640 mwl8k_cmd_802_11_radio_control(struct ieee80211_hw
*hw
, bool enable
, bool force
)
1642 struct mwl8k_priv
*priv
= hw
->priv
;
1643 struct mwl8k_cmd_802_11_radio_control
*cmd
;
1646 if (enable
== priv
->radio_on
&& !force
)
1649 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1653 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RADIO_CONTROL
);
1654 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1655 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1656 cmd
->control
= cpu_to_le16(priv
->radio_short_preamble
? 3 : 1);
1657 cmd
->radio_on
= cpu_to_le16(enable
? 0x0001 : 0x0000);
1659 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1663 priv
->radio_on
= enable
;
1668 static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw
*hw
)
1670 return mwl8k_cmd_802_11_radio_control(hw
, 0, 0);
1673 static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw
*hw
)
1675 return mwl8k_cmd_802_11_radio_control(hw
, 1, 0);
1679 mwl8k_set_radio_preamble(struct ieee80211_hw
*hw
, bool short_preamble
)
1681 struct mwl8k_priv
*priv
;
1683 if (hw
== NULL
|| hw
->priv
== NULL
)
1687 priv
->radio_short_preamble
= short_preamble
;
1689 return mwl8k_cmd_802_11_radio_control(hw
, 1, 1);
1693 * CMD_802_11_RF_TX_POWER.
1695 #define MWL8K_TX_POWER_LEVEL_TOTAL 8
1697 struct mwl8k_cmd_802_11_rf_tx_power
{
1698 struct mwl8k_cmd_pkt header
;
1700 __le16 support_level
;
1701 __le16 current_level
;
1703 __le16 power_level_list
[MWL8K_TX_POWER_LEVEL_TOTAL
];
1704 } __attribute__((packed
));
1706 static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw
*hw
, int dBm
)
1708 struct mwl8k_cmd_802_11_rf_tx_power
*cmd
;
1711 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1715 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RF_TX_POWER
);
1716 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1717 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1718 cmd
->support_level
= cpu_to_le16(dBm
);
1720 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1729 struct mwl8k_cmd_set_pre_scan
{
1730 struct mwl8k_cmd_pkt header
;
1731 } __attribute__((packed
));
1733 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw
*hw
)
1735 struct mwl8k_cmd_set_pre_scan
*cmd
;
1738 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1742 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN
);
1743 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1745 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1752 * CMD_SET_POST_SCAN.
1754 struct mwl8k_cmd_set_post_scan
{
1755 struct mwl8k_cmd_pkt header
;
1757 __u8 bssid
[ETH_ALEN
];
1758 } __attribute__((packed
));
1761 mwl8k_cmd_set_post_scan(struct ieee80211_hw
*hw
, __u8
*mac
)
1763 struct mwl8k_cmd_set_post_scan
*cmd
;
1766 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1770 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_POST_SCAN
);
1771 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1773 memcpy(cmd
->bssid
, mac
, ETH_ALEN
);
1775 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1782 * CMD_SET_RF_CHANNEL.
1784 struct mwl8k_cmd_set_rf_channel
{
1785 struct mwl8k_cmd_pkt header
;
1787 __u8 current_channel
;
1788 __le32 channel_flags
;
1789 } __attribute__((packed
));
1791 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw
*hw
,
1792 struct ieee80211_channel
*channel
)
1794 struct mwl8k_cmd_set_rf_channel
*cmd
;
1797 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1801 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL
);
1802 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1803 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1804 cmd
->current_channel
= channel
->hw_value
;
1805 if (channel
->band
== IEEE80211_BAND_2GHZ
)
1806 cmd
->channel_flags
= cpu_to_le32(0x00000081);
1808 cmd
->channel_flags
= cpu_to_le32(0x00000000);
1810 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1819 struct mwl8k_cmd_set_slot
{
1820 struct mwl8k_cmd_pkt header
;
1823 } __attribute__((packed
));
1825 static int mwl8k_cmd_set_slot(struct ieee80211_hw
*hw
, bool short_slot_time
)
1827 struct mwl8k_cmd_set_slot
*cmd
;
1830 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1834 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_SLOT
);
1835 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1836 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1837 cmd
->short_slot
= short_slot_time
;
1839 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1848 struct mwl8k_cmd_mimo_config
{
1849 struct mwl8k_cmd_pkt header
;
1851 __u8 rx_antenna_map
;
1852 __u8 tx_antenna_map
;
1853 } __attribute__((packed
));
1855 static int mwl8k_cmd_mimo_config(struct ieee80211_hw
*hw
, __u8 rx
, __u8 tx
)
1857 struct mwl8k_cmd_mimo_config
*cmd
;
1860 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1864 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MIMO_CONFIG
);
1865 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1866 cmd
->action
= cpu_to_le32((u32
)MWL8K_CMD_SET
);
1867 cmd
->rx_antenna_map
= rx
;
1868 cmd
->tx_antenna_map
= tx
;
1870 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1877 * CMD_ENABLE_SNIFFER.
1879 struct mwl8k_cmd_enable_sniffer
{
1880 struct mwl8k_cmd_pkt header
;
1882 } __attribute__((packed
));
1884 static int mwl8k_enable_sniffer(struct ieee80211_hw
*hw
, bool enable
)
1886 struct mwl8k_cmd_enable_sniffer
*cmd
;
1889 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1893 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER
);
1894 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1895 cmd
->action
= cpu_to_le32(!!enable
);
1897 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1904 * CMD_SET_RATEADAPT_MODE.
1906 struct mwl8k_cmd_set_rate_adapt_mode
{
1907 struct mwl8k_cmd_pkt header
;
1910 } __attribute__((packed
));
1912 static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw
*hw
, __u16 mode
)
1914 struct mwl8k_cmd_set_rate_adapt_mode
*cmd
;
1917 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1921 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE
);
1922 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1923 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1924 cmd
->mode
= cpu_to_le16(mode
);
1926 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1935 struct mwl8k_cmd_set_wmm
{
1936 struct mwl8k_cmd_pkt header
;
1938 } __attribute__((packed
));
1940 static int mwl8k_set_wmm(struct ieee80211_hw
*hw
, bool enable
)
1942 struct mwl8k_priv
*priv
= hw
->priv
;
1943 struct mwl8k_cmd_set_wmm
*cmd
;
1946 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1950 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_WMM_MODE
);
1951 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1952 cmd
->action
= cpu_to_le16(!!enable
);
1954 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1958 priv
->wmm_enabled
= enable
;
1964 * CMD_SET_RTS_THRESHOLD.
1966 struct mwl8k_cmd_rts_threshold
{
1967 struct mwl8k_cmd_pkt header
;
1970 } __attribute__((packed
));
1972 static int mwl8k_rts_threshold(struct ieee80211_hw
*hw
,
1973 u16 action
, u16
*threshold
)
1975 struct mwl8k_cmd_rts_threshold
*cmd
;
1978 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1982 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD
);
1983 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1984 cmd
->action
= cpu_to_le16(action
);
1985 cmd
->threshold
= cpu_to_le16(*threshold
);
1987 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1994 * CMD_SET_EDCA_PARAMS.
1996 struct mwl8k_cmd_set_edca_params
{
1997 struct mwl8k_cmd_pkt header
;
1999 /* See MWL8K_SET_EDCA_XXX below */
2002 /* TX opportunity in units of 32 us */
2005 /* Log exponent of max contention period: 0...15*/
2008 /* Log exponent of min contention period: 0...15 */
2011 /* Adaptive interframe spacing in units of 32us */
2014 /* TX queue to configure */
2016 } __attribute__((packed
));
2018 #define MWL8K_SET_EDCA_CW 0x01
2019 #define MWL8K_SET_EDCA_TXOP 0x02
2020 #define MWL8K_SET_EDCA_AIFS 0x04
2022 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2023 MWL8K_SET_EDCA_TXOP | \
2024 MWL8K_SET_EDCA_AIFS)
2027 mwl8k_set_edca_params(struct ieee80211_hw
*hw
, __u8 qnum
,
2028 __u16 cw_min
, __u16 cw_max
,
2029 __u8 aifs
, __u16 txop
)
2031 struct mwl8k_cmd_set_edca_params
*cmd
;
2034 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2038 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS
);
2039 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2040 cmd
->action
= cpu_to_le16(MWL8K_SET_EDCA_ALL
);
2041 cmd
->txop
= cpu_to_le16(txop
);
2042 cmd
->log_cw_max
= (u8
)ilog2(cw_max
+ 1);
2043 cmd
->log_cw_min
= (u8
)ilog2(cw_min
+ 1);
2047 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2054 * CMD_FINALIZE_JOIN.
2057 /* FJ beacon buffer size is compiled into the firmware. */
2058 #define MWL8K_FJ_BEACON_MAXLEN 128
2060 struct mwl8k_cmd_finalize_join
{
2061 struct mwl8k_cmd_pkt header
;
2062 __le32 sleep_interval
; /* Number of beacon periods to sleep */
2063 __u8 beacon_data
[MWL8K_FJ_BEACON_MAXLEN
];
2064 } __attribute__((packed
));
2066 static int mwl8k_finalize_join(struct ieee80211_hw
*hw
, void *frame
,
2067 __u16 framelen
, __u16 dtim
)
2069 struct mwl8k_cmd_finalize_join
*cmd
;
2070 struct ieee80211_mgmt
*payload
= frame
;
2078 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2082 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN
);
2083 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2084 cmd
->sleep_interval
= cpu_to_le32(dtim
? dtim
: 1);
2086 hdrlen
= ieee80211_hdrlen(payload
->frame_control
);
2088 payload_len
= framelen
> hdrlen
? framelen
- hdrlen
: 0;
2090 /* XXX TBD Might just have to abort and return an error */
2091 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2092 printk(KERN_ERR
"%s(): WARNING: Incomplete beacon "
2093 "sent to firmware. Sz=%u MAX=%u\n", __func__
,
2094 payload_len
, MWL8K_FJ_BEACON_MAXLEN
);
2096 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2097 payload_len
= MWL8K_FJ_BEACON_MAXLEN
;
2099 if (payload
&& payload_len
)
2100 memcpy(cmd
->beacon_data
, &payload
->u
.beacon
, payload_len
);
2102 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2110 struct mwl8k_cmd_update_sta_db
{
2111 struct mwl8k_cmd_pkt header
;
2113 /* See STADB_ACTION_TYPE */
2116 /* Peer MAC address */
2117 __u8 peer_addr
[ETH_ALEN
];
2121 /* Peer info - valid during add/update. */
2122 struct peer_capability_info peer_info
;
2123 } __attribute__((packed
));
2125 static int mwl8k_cmd_update_sta_db(struct ieee80211_hw
*hw
,
2126 struct ieee80211_vif
*vif
, __u32 action
)
2128 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2129 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2130 struct mwl8k_cmd_update_sta_db
*cmd
;
2131 struct peer_capability_info
*peer_info
;
2132 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2136 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2140 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_UPDATE_STADB
);
2141 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2143 cmd
->action
= cpu_to_le32(action
);
2144 peer_info
= &cmd
->peer_info
;
2145 memcpy(cmd
->peer_addr
, mv_vif
->bssid
, ETH_ALEN
);
2148 case MWL8K_STA_DB_ADD_ENTRY
:
2149 case MWL8K_STA_DB_MODIFY_ENTRY
:
2150 /* Build peer_info block */
2151 peer_info
->peer_type
= MWL8K_PEER_TYPE_ACCESSPOINT
;
2152 peer_info
->basic_caps
= cpu_to_le16(info
->assoc_capability
);
2153 peer_info
->interop
= 1;
2154 peer_info
->amsdu_enabled
= 0;
2156 rates
= peer_info
->legacy_rates
;
2157 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2158 rates
[count
] = bitrates
[count
].hw_value
;
2160 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2162 mv_vif
->peer_id
= peer_info
->station_id
;
2166 case MWL8K_STA_DB_DEL_ENTRY
:
2167 case MWL8K_STA_DB_FLUSH
:
2169 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2171 mv_vif
->peer_id
= 0;
2182 #define MWL8K_RATE_INDEX_MAX_ARRAY 14
2184 #define MWL8K_FRAME_PROT_DISABLED 0x00
2185 #define MWL8K_FRAME_PROT_11G 0x07
2186 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2187 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2189 struct mwl8k_cmd_update_set_aid
{
2190 struct mwl8k_cmd_pkt header
;
2193 /* AP's MAC address (BSSID) */
2194 __u8 bssid
[ETH_ALEN
];
2195 __le16 protection_mode
;
2196 __u8 supp_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2197 } __attribute__((packed
));
2199 static int mwl8k_cmd_set_aid(struct ieee80211_hw
*hw
,
2200 struct ieee80211_vif
*vif
)
2202 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2203 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2204 struct mwl8k_cmd_update_set_aid
*cmd
;
2205 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2210 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2214 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_AID
);
2215 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2216 cmd
->aid
= cpu_to_le16(info
->aid
);
2218 memcpy(cmd
->bssid
, mv_vif
->bssid
, ETH_ALEN
);
2220 if (info
->use_cts_prot
) {
2221 prot_mode
= MWL8K_FRAME_PROT_11G
;
2223 switch (info
->ht_operation_mode
&
2224 IEEE80211_HT_OP_MODE_PROTECTION
) {
2225 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
2226 prot_mode
= MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY
;
2228 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
2229 prot_mode
= MWL8K_FRAME_PROT_11N_HT_ALL
;
2232 prot_mode
= MWL8K_FRAME_PROT_DISABLED
;
2236 cmd
->protection_mode
= cpu_to_le16(prot_mode
);
2238 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2239 cmd
->supp_rates
[count
] = bitrates
[count
].hw_value
;
2241 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2250 struct mwl8k_cmd_update_rateset
{
2251 struct mwl8k_cmd_pkt header
;
2252 __u8 legacy_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2254 /* Bitmap for supported MCS codes. */
2255 __u8 mcs_set
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2256 __u8 reserved
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2257 } __attribute__((packed
));
2259 static int mwl8k_update_rateset(struct ieee80211_hw
*hw
,
2260 struct ieee80211_vif
*vif
)
2262 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2263 struct mwl8k_cmd_update_rateset
*cmd
;
2264 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2268 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2272 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATE
);
2273 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2275 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2276 cmd
->legacy_rates
[count
] = bitrates
[count
].hw_value
;
2278 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2285 * CMD_USE_FIXED_RATE.
2287 #define MWL8K_RATE_TABLE_SIZE 8
2288 #define MWL8K_UCAST_RATE 0
2289 #define MWL8K_USE_AUTO_RATE 0x0002
2291 struct mwl8k_rate_entry
{
2292 /* Set to 1 if HT rate, 0 if legacy. */
2295 /* Set to 1 to use retry_count field. */
2296 __le32 enable_retry
;
2298 /* Specified legacy rate or MCS. */
2301 /* Number of allowed retries. */
2303 } __attribute__((packed
));
2305 struct mwl8k_rate_table
{
2306 /* 1 to allow specified rate and below */
2307 __le32 allow_rate_drop
;
2309 struct mwl8k_rate_entry rate_entry
[MWL8K_RATE_TABLE_SIZE
];
2310 } __attribute__((packed
));
2312 struct mwl8k_cmd_use_fixed_rate
{
2313 struct mwl8k_cmd_pkt header
;
2315 struct mwl8k_rate_table rate_table
;
2317 /* Unicast, Broadcast or Multicast */
2321 } __attribute__((packed
));
2323 static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw
*hw
,
2324 u32 action
, u32 rate_type
, struct mwl8k_rate_table
*rate_table
)
2326 struct mwl8k_cmd_use_fixed_rate
*cmd
;
2330 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2334 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE
);
2335 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2337 cmd
->action
= cpu_to_le32(action
);
2338 cmd
->rate_type
= cpu_to_le32(rate_type
);
2340 if (rate_table
!= NULL
) {
2341 /* Copy over each field manually so
2342 * that bitflipping can be done
2344 cmd
->rate_table
.allow_rate_drop
=
2345 cpu_to_le32(rate_table
->allow_rate_drop
);
2346 cmd
->rate_table
.num_rates
=
2347 cpu_to_le32(rate_table
->num_rates
);
2349 for (count
= 0; count
< rate_table
->num_rates
; count
++) {
2350 struct mwl8k_rate_entry
*dst
=
2351 &cmd
->rate_table
.rate_entry
[count
];
2352 struct mwl8k_rate_entry
*src
=
2353 &rate_table
->rate_entry
[count
];
2355 dst
->is_ht_rate
= cpu_to_le32(src
->is_ht_rate
);
2356 dst
->enable_retry
= cpu_to_le32(src
->enable_retry
);
2357 dst
->rate
= cpu_to_le32(src
->rate
);
2358 dst
->retry_count
= cpu_to_le32(src
->retry_count
);
2362 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2370 * Interrupt handling.
2372 static irqreturn_t
mwl8k_interrupt(int irq
, void *dev_id
)
2374 struct ieee80211_hw
*hw
= dev_id
;
2375 struct mwl8k_priv
*priv
= hw
->priv
;
2378 status
= ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2379 iowrite32(~status
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2384 if (status
& MWL8K_A2H_INT_TX_DONE
)
2385 tasklet_schedule(&priv
->tx_reclaim_task
);
2387 if (status
& MWL8K_A2H_INT_RX_READY
) {
2388 while (rxq_process(hw
, 0, 1))
2389 rxq_refill(hw
, 0, 1);
2392 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
2393 if (priv
->hostcmd_wait
!= NULL
)
2394 complete(priv
->hostcmd_wait
);
2397 if (status
& MWL8K_A2H_INT_QUEUE_EMPTY
) {
2398 if (!mutex_is_locked(&priv
->fw_mutex
) &&
2399 priv
->radio_on
&& mwl8k_txq_busy(priv
))
2400 mwl8k_tx_start(priv
);
2408 * Core driver operations.
2410 static int mwl8k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2412 struct mwl8k_priv
*priv
= hw
->priv
;
2413 int index
= skb_get_queue_mapping(skb
);
2416 if (priv
->current_channel
== NULL
) {
2417 printk(KERN_DEBUG
"%s: dropped TX frame since radio "
2418 "disabled\n", priv
->name
);
2420 return NETDEV_TX_OK
;
2423 rc
= mwl8k_txq_xmit(hw
, index
, skb
);
2428 struct mwl8k_work_struct
{
2429 /* Initialized by mwl8k_queue_work(). */
2430 struct work_struct wt
;
2432 /* Required field passed in to mwl8k_queue_work(). */
2433 struct ieee80211_hw
*hw
;
2435 /* Required field passed in to mwl8k_queue_work(). */
2436 int (*wfunc
)(struct work_struct
*w
);
2438 /* Initialized by mwl8k_queue_work(). */
2439 struct completion
*cmd_wait
;
2445 static void mwl8k_config_thread(struct work_struct
*wt
)
2447 struct mwl8k_work_struct
*worker
= (struct mwl8k_work_struct
*)wt
;
2448 struct ieee80211_hw
*hw
= worker
->hw
;
2451 rc
= mwl8k_fw_lock(hw
);
2453 rc
= worker
->wfunc(wt
);
2454 mwl8k_fw_unlock(hw
);
2458 complete(worker
->cmd_wait
);
2461 static int mwl8k_queue_work(struct ieee80211_hw
*hw
,
2462 struct mwl8k_work_struct
*worker
,
2463 int (*wfunc
)(struct work_struct
*w
))
2465 struct mwl8k_priv
*priv
= hw
->priv
;
2466 unsigned long timeout
= 0;
2469 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
2472 worker
->cmd_wait
= &cmd_wait
;
2474 worker
->wfunc
= wfunc
;
2476 INIT_WORK(&worker
->wt
, mwl8k_config_thread
);
2477 queue_work(priv
->config_wq
, &worker
->wt
);
2479 timeout
= wait_for_completion_timeout(&cmd_wait
,
2480 msecs_to_jiffies(10000));
2485 cancel_work_sync(&worker
->wt
);
2492 static int mwl8k_start(struct ieee80211_hw
*hw
)
2494 struct mwl8k_priv
*priv
= hw
->priv
;
2497 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
2498 IRQF_SHARED
, MWL8K_NAME
, hw
);
2500 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
2505 /* Enable tx reclaim tasklet */
2506 tasklet_enable(&priv
->tx_reclaim_task
);
2508 /* Enable interrupts */
2509 iowrite32(MWL8K_A2H_EVENTS
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2511 rc
= mwl8k_fw_lock(hw
);
2513 rc
= mwl8k_cmd_802_11_radio_enable(hw
);
2516 rc
= mwl8k_cmd_set_pre_scan(hw
);
2519 rc
= mwl8k_cmd_set_post_scan(hw
,
2520 "\x00\x00\x00\x00\x00\x00");
2523 rc
= mwl8k_cmd_setrateadaptmode(hw
, 0);
2526 rc
= mwl8k_set_wmm(hw
, 0);
2529 rc
= mwl8k_enable_sniffer(hw
, 0);
2531 mwl8k_fw_unlock(hw
);
2535 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2536 free_irq(priv
->pdev
->irq
, hw
);
2537 tasklet_disable(&priv
->tx_reclaim_task
);
2543 static void mwl8k_stop(struct ieee80211_hw
*hw
)
2545 struct mwl8k_priv
*priv
= hw
->priv
;
2548 mwl8k_cmd_802_11_radio_disable(hw
);
2550 ieee80211_stop_queues(hw
);
2552 /* Disable interrupts */
2553 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2554 free_irq(priv
->pdev
->irq
, hw
);
2556 /* Stop finalize join worker */
2557 cancel_work_sync(&priv
->finalize_join_worker
);
2558 if (priv
->beacon_skb
!= NULL
)
2559 dev_kfree_skb(priv
->beacon_skb
);
2561 /* Stop tx reclaim tasklet */
2562 tasklet_disable(&priv
->tx_reclaim_task
);
2564 /* Stop config thread */
2565 flush_workqueue(priv
->config_wq
);
2567 /* Return all skbs to mac80211 */
2568 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
2569 mwl8k_txq_reclaim(hw
, i
, 1);
2572 static int mwl8k_add_interface(struct ieee80211_hw
*hw
,
2573 struct ieee80211_if_init_conf
*conf
)
2575 struct mwl8k_priv
*priv
= hw
->priv
;
2576 struct mwl8k_vif
*mwl8k_vif
;
2579 * We only support one active interface at a time.
2581 if (priv
->vif
!= NULL
)
2585 * We only support managed interfaces for now.
2587 if (conf
->type
!= NL80211_IFTYPE_STATION
)
2590 /* Clean out driver private area */
2591 mwl8k_vif
= MWL8K_VIF(conf
->vif
);
2592 memset(mwl8k_vif
, 0, sizeof(*mwl8k_vif
));
2594 /* Save the mac address */
2595 memcpy(mwl8k_vif
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
2597 /* Back pointer to parent config block */
2598 mwl8k_vif
->priv
= priv
;
2600 /* Setup initial PHY parameters */
2601 memcpy(mwl8k_vif
->legacy_rates
,
2602 priv
->rates
, sizeof(mwl8k_vif
->legacy_rates
));
2603 mwl8k_vif
->legacy_nrates
= ARRAY_SIZE(priv
->rates
);
2605 /* Set Initial sequence number to zero */
2606 mwl8k_vif
->seqno
= 0;
2608 priv
->vif
= conf
->vif
;
2609 priv
->current_channel
= NULL
;
2614 static void mwl8k_remove_interface(struct ieee80211_hw
*hw
,
2615 struct ieee80211_if_init_conf
*conf
)
2617 struct mwl8k_priv
*priv
= hw
->priv
;
2619 if (priv
->vif
== NULL
)
2625 static int mwl8k_config(struct ieee80211_hw
*hw
, u32 changed
)
2627 struct ieee80211_conf
*conf
= &hw
->conf
;
2628 struct mwl8k_priv
*priv
= hw
->priv
;
2631 if (conf
->flags
& IEEE80211_CONF_IDLE
) {
2632 mwl8k_cmd_802_11_radio_disable(hw
);
2633 priv
->current_channel
= NULL
;
2637 rc
= mwl8k_fw_lock(hw
);
2641 rc
= mwl8k_cmd_802_11_radio_enable(hw
);
2645 rc
= mwl8k_cmd_set_rf_channel(hw
, conf
->channel
);
2649 priv
->current_channel
= conf
->channel
;
2651 if (conf
->power_level
> 18)
2652 conf
->power_level
= 18;
2653 rc
= mwl8k_cmd_802_11_rf_tx_power(hw
, conf
->power_level
);
2657 if (mwl8k_cmd_mimo_config(hw
, 0x7, 0x7))
2661 mwl8k_fw_unlock(hw
);
2666 static void mwl8k_bss_info_changed(struct ieee80211_hw
*hw
,
2667 struct ieee80211_vif
*vif
,
2668 struct ieee80211_bss_conf
*info
,
2671 struct mwl8k_priv
*priv
= hw
->priv
;
2672 struct mwl8k_vif
*mwl8k_vif
= MWL8K_VIF(vif
);
2675 if (changed
& BSS_CHANGED_BSSID
)
2676 memcpy(mwl8k_vif
->bssid
, info
->bssid
, ETH_ALEN
);
2678 if ((changed
& BSS_CHANGED_ASSOC
) == 0)
2681 priv
->capture_beacon
= false;
2683 rc
= mwl8k_fw_lock(hw
);
2688 memcpy(&mwl8k_vif
->bss_info
, info
,
2689 sizeof(struct ieee80211_bss_conf
));
2692 rc
= mwl8k_update_rateset(hw
, vif
);
2696 /* Turn on rate adaptation */
2697 rc
= mwl8k_cmd_use_fixed_rate(hw
, MWL8K_USE_AUTO_RATE
,
2698 MWL8K_UCAST_RATE
, NULL
);
2702 /* Set radio preamble */
2703 rc
= mwl8k_set_radio_preamble(hw
, info
->use_short_preamble
);
2708 rc
= mwl8k_cmd_set_slot(hw
, info
->use_short_slot
);
2712 /* Update peer rate info */
2713 rc
= mwl8k_cmd_update_sta_db(hw
, vif
,
2714 MWL8K_STA_DB_MODIFY_ENTRY
);
2719 rc
= mwl8k_cmd_set_aid(hw
, vif
);
2724 * Finalize the join. Tell rx handler to process
2725 * next beacon from our BSSID.
2727 memcpy(priv
->capture_bssid
, mwl8k_vif
->bssid
, ETH_ALEN
);
2728 priv
->capture_beacon
= true;
2730 rc
= mwl8k_cmd_update_sta_db(hw
, vif
, MWL8K_STA_DB_DEL_ENTRY
);
2731 memset(&mwl8k_vif
->bss_info
, 0,
2732 sizeof(struct ieee80211_bss_conf
));
2733 memset(mwl8k_vif
->bssid
, 0, ETH_ALEN
);
2737 mwl8k_fw_unlock(hw
);
2740 static u64
mwl8k_prepare_multicast(struct ieee80211_hw
*hw
,
2741 int mc_count
, struct dev_addr_list
*mclist
)
2743 struct mwl8k_cmd_pkt
*cmd
;
2745 cmd
= __mwl8k_cmd_mac_multicast_adr(hw
, mc_count
, mclist
);
2747 return (unsigned long)cmd
;
2750 struct mwl8k_configure_filter_worker
{
2751 struct mwl8k_work_struct header
;
2752 unsigned int changed_flags
;
2753 unsigned int total_flags
;
2754 struct mwl8k_cmd_pkt
*multicast_adr_cmd
;
2757 #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
2759 static int mwl8k_configure_filter_wt(struct work_struct
*wt
)
2761 struct mwl8k_configure_filter_worker
*worker
=
2762 (struct mwl8k_configure_filter_worker
*)wt
;
2763 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2764 struct mwl8k_priv
*priv
= hw
->priv
;
2767 if (worker
->changed_flags
& FIF_BCN_PRBRESP_PROMISC
) {
2768 if (worker
->total_flags
& FIF_BCN_PRBRESP_PROMISC
)
2769 rc
= mwl8k_cmd_set_pre_scan(hw
);
2773 bssid
= "\x00\x00\x00\x00\x00\x00";
2774 if (priv
->vif
!= NULL
)
2775 bssid
= MWL8K_VIF(priv
->vif
)->bssid
;
2777 rc
= mwl8k_cmd_set_post_scan(hw
, bssid
);
2781 if (!rc
&& worker
->multicast_adr_cmd
!= NULL
)
2782 rc
= mwl8k_post_cmd(hw
, worker
->multicast_adr_cmd
);
2783 kfree(worker
->multicast_adr_cmd
);
2788 static void mwl8k_configure_filter(struct ieee80211_hw
*hw
,
2789 unsigned int changed_flags
,
2790 unsigned int *total_flags
,
2793 struct mwl8k_configure_filter_worker
*worker
;
2795 /* Clear unsupported feature flags */
2796 *total_flags
&= MWL8K_SUPPORTED_IF_FLAGS
;
2798 if (!(changed_flags
& MWL8K_SUPPORTED_IF_FLAGS
))
2801 worker
= kzalloc(sizeof(*worker
), GFP_ATOMIC
);
2805 worker
->changed_flags
= changed_flags
;
2806 worker
->total_flags
= *total_flags
;
2807 worker
->multicast_adr_cmd
= (void *)(unsigned long)multicast
;
2809 mwl8k_queue_work(hw
, &worker
->header
, mwl8k_configure_filter_wt
);
2812 struct mwl8k_set_rts_threshold_worker
{
2813 struct mwl8k_work_struct header
;
2817 static int mwl8k_set_rts_threshold_wt(struct work_struct
*wt
)
2819 struct mwl8k_set_rts_threshold_worker
*worker
=
2820 (struct mwl8k_set_rts_threshold_worker
*)wt
;
2822 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2823 u16 threshold
= (u16
)(worker
->value
);
2826 rc
= mwl8k_rts_threshold(hw
, MWL8K_CMD_SET
, &threshold
);
2831 static int mwl8k_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
2834 struct mwl8k_set_rts_threshold_worker
*worker
;
2836 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2840 worker
->value
= value
;
2842 rc
= mwl8k_queue_work(hw
, &worker
->header
, mwl8k_set_rts_threshold_wt
);
2845 if (rc
== -ETIMEDOUT
) {
2846 printk(KERN_ERR
"%s() timed out\n", __func__
);
2853 struct mwl8k_conf_tx_worker
{
2854 struct mwl8k_work_struct header
;
2856 const struct ieee80211_tx_queue_params
*params
;
2859 static int mwl8k_conf_tx_wt(struct work_struct
*wt
)
2861 struct mwl8k_conf_tx_worker
*worker
=
2862 (struct mwl8k_conf_tx_worker
*)wt
;
2864 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2865 u16 queue
= worker
->queue
;
2866 const struct ieee80211_tx_queue_params
*params
= worker
->params
;
2868 struct mwl8k_priv
*priv
= hw
->priv
;
2871 if (!priv
->wmm_enabled
) {
2872 if (mwl8k_set_wmm(hw
, 1)) {
2874 goto mwl8k_conf_tx_exit
;
2878 if (mwl8k_set_edca_params(hw
, GET_TXQ(queue
), params
->cw_min
,
2879 params
->cw_max
, params
->aifs
, params
->txop
))
2885 static int mwl8k_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
2886 const struct ieee80211_tx_queue_params
*params
)
2889 struct mwl8k_conf_tx_worker
*worker
;
2891 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2895 worker
->queue
= queue
;
2896 worker
->params
= params
;
2897 rc
= mwl8k_queue_work(hw
, &worker
->header
, mwl8k_conf_tx_wt
);
2899 if (rc
== -ETIMEDOUT
) {
2900 printk(KERN_ERR
"%s() timed out\n", __func__
);
2906 static int mwl8k_get_tx_stats(struct ieee80211_hw
*hw
,
2907 struct ieee80211_tx_queue_stats
*stats
)
2909 struct mwl8k_priv
*priv
= hw
->priv
;
2910 struct mwl8k_tx_queue
*txq
;
2913 spin_lock_bh(&priv
->tx_lock
);
2914 for (index
= 0; index
< MWL8K_TX_QUEUES
; index
++) {
2915 txq
= priv
->txq
+ index
;
2916 memcpy(&stats
[index
], &txq
->tx_stats
,
2917 sizeof(struct ieee80211_tx_queue_stats
));
2919 spin_unlock_bh(&priv
->tx_lock
);
2923 struct mwl8k_get_stats_worker
{
2924 struct mwl8k_work_struct header
;
2925 struct ieee80211_low_level_stats
*stats
;
2928 static int mwl8k_get_stats_wt(struct work_struct
*wt
)
2930 struct mwl8k_get_stats_worker
*worker
=
2931 (struct mwl8k_get_stats_worker
*)wt
;
2933 return mwl8k_cmd_802_11_get_stat(worker
->header
.hw
, worker
->stats
);
2936 static int mwl8k_get_stats(struct ieee80211_hw
*hw
,
2937 struct ieee80211_low_level_stats
*stats
)
2940 struct mwl8k_get_stats_worker
*worker
;
2942 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2946 worker
->stats
= stats
;
2947 rc
= mwl8k_queue_work(hw
, &worker
->header
, mwl8k_get_stats_wt
);
2950 if (rc
== -ETIMEDOUT
) {
2951 printk(KERN_ERR
"%s() timed out\n", __func__
);
2958 static const struct ieee80211_ops mwl8k_ops
= {
2960 .start
= mwl8k_start
,
2962 .add_interface
= mwl8k_add_interface
,
2963 .remove_interface
= mwl8k_remove_interface
,
2964 .config
= mwl8k_config
,
2965 .bss_info_changed
= mwl8k_bss_info_changed
,
2966 .prepare_multicast
= mwl8k_prepare_multicast
,
2967 .configure_filter
= mwl8k_configure_filter
,
2968 .set_rts_threshold
= mwl8k_set_rts_threshold
,
2969 .conf_tx
= mwl8k_conf_tx
,
2970 .get_tx_stats
= mwl8k_get_tx_stats
,
2971 .get_stats
= mwl8k_get_stats
,
2974 static void mwl8k_tx_reclaim_handler(unsigned long data
)
2977 struct ieee80211_hw
*hw
= (struct ieee80211_hw
*) data
;
2978 struct mwl8k_priv
*priv
= hw
->priv
;
2980 spin_lock_bh(&priv
->tx_lock
);
2981 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
2982 mwl8k_txq_reclaim(hw
, i
, 0);
2984 if (priv
->tx_wait
!= NULL
&& mwl8k_txq_busy(priv
) == 0) {
2985 complete(priv
->tx_wait
);
2986 priv
->tx_wait
= NULL
;
2988 spin_unlock_bh(&priv
->tx_lock
);
2991 static void mwl8k_finalize_join_worker(struct work_struct
*work
)
2993 struct mwl8k_priv
*priv
=
2994 container_of(work
, struct mwl8k_priv
, finalize_join_worker
);
2995 struct sk_buff
*skb
= priv
->beacon_skb
;
2996 u8 dtim
= MWL8K_VIF(priv
->vif
)->bss_info
.dtim_period
;
2998 mwl8k_finalize_join(priv
->hw
, skb
->data
, skb
->len
, dtim
);
3001 priv
->beacon_skb
= NULL
;
3004 static int __devinit
mwl8k_probe(struct pci_dev
*pdev
,
3005 const struct pci_device_id
*id
)
3007 struct ieee80211_hw
*hw
;
3008 struct mwl8k_priv
*priv
;
3013 rc
= pci_enable_device(pdev
);
3015 printk(KERN_ERR
"%s: Cannot enable new PCI device\n",
3020 rc
= pci_request_regions(pdev
, MWL8K_NAME
);
3022 printk(KERN_ERR
"%s: Cannot obtain PCI resources\n",
3027 pci_set_master(pdev
);
3029 hw
= ieee80211_alloc_hw(sizeof(*priv
), &mwl8k_ops
);
3031 printk(KERN_ERR
"%s: ieee80211 alloc failed\n", MWL8K_NAME
);
3039 priv
->wmm_enabled
= false;
3040 priv
->pending_tx_pkts
= 0;
3041 strncpy(priv
->name
, MWL8K_NAME
, sizeof(priv
->name
));
3043 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3044 pci_set_drvdata(pdev
, hw
);
3046 priv
->regs
= pci_iomap(pdev
, 1, 0x10000);
3047 if (priv
->regs
== NULL
) {
3048 printk(KERN_ERR
"%s: Cannot map device memory\n", priv
->name
);
3052 memcpy(priv
->channels
, mwl8k_channels
, sizeof(mwl8k_channels
));
3053 priv
->band
.band
= IEEE80211_BAND_2GHZ
;
3054 priv
->band
.channels
= priv
->channels
;
3055 priv
->band
.n_channels
= ARRAY_SIZE(mwl8k_channels
);
3056 priv
->band
.bitrates
= priv
->rates
;
3057 priv
->band
.n_bitrates
= ARRAY_SIZE(mwl8k_rates
);
3058 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &priv
->band
;
3060 BUILD_BUG_ON(sizeof(priv
->rates
) != sizeof(mwl8k_rates
));
3061 memcpy(priv
->rates
, mwl8k_rates
, sizeof(mwl8k_rates
));
3064 * Extra headroom is the size of the required DMA header
3065 * minus the size of the smallest 802.11 frame (CTS frame).
3067 hw
->extra_tx_headroom
=
3068 sizeof(struct mwl8k_dma_data
) - sizeof(struct ieee80211_cts
);
3070 hw
->channel_change_time
= 10;
3072 hw
->queues
= MWL8K_TX_QUEUES
;
3074 hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
3076 /* Set rssi and noise values to dBm */
3077 hw
->flags
|= IEEE80211_HW_SIGNAL_DBM
| IEEE80211_HW_NOISE_DBM
;
3078 hw
->vif_data_size
= sizeof(struct mwl8k_vif
);
3081 /* Set default radio state and preamble */
3083 priv
->radio_short_preamble
= 0;
3085 /* Finalize join worker */
3086 INIT_WORK(&priv
->finalize_join_worker
, mwl8k_finalize_join_worker
);
3088 /* TX reclaim tasklet */
3089 tasklet_init(&priv
->tx_reclaim_task
,
3090 mwl8k_tx_reclaim_handler
, (unsigned long)hw
);
3091 tasklet_disable(&priv
->tx_reclaim_task
);
3093 /* Config workthread */
3094 priv
->config_wq
= create_singlethread_workqueue("mwl8k_config");
3095 if (priv
->config_wq
== NULL
)
3098 /* Power management cookie */
3099 priv
->cookie
= pci_alloc_consistent(priv
->pdev
, 4, &priv
->cookie_dma
);
3100 if (priv
->cookie
== NULL
)
3103 rc
= mwl8k_rxq_init(hw
, 0);
3106 rxq_refill(hw
, 0, INT_MAX
);
3108 mutex_init(&priv
->fw_mutex
);
3109 priv
->fw_mutex_owner
= NULL
;
3110 priv
->fw_mutex_depth
= 0;
3111 priv
->tx_wait
= NULL
;
3112 priv
->hostcmd_wait
= NULL
;
3114 spin_lock_init(&priv
->tx_lock
);
3116 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++) {
3117 rc
= mwl8k_txq_init(hw
, i
);
3119 goto err_free_queues
;
3122 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
3123 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3124 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL
);
3125 iowrite32(0xffffffff, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK
);
3127 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
3128 IRQF_SHARED
, MWL8K_NAME
, hw
);
3130 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
3132 goto err_free_queues
;
3135 /* Reset firmware and hardware */
3136 mwl8k_hw_reset(priv
);
3138 /* Ask userland hotplug daemon for the device firmware */
3139 rc
= mwl8k_request_firmware(priv
, (u32
)id
->driver_data
);
3141 printk(KERN_ERR
"%s: Firmware files not found\n", priv
->name
);
3145 /* Load firmware into hardware */
3146 rc
= mwl8k_load_firmware(priv
);
3148 printk(KERN_ERR
"%s: Cannot start firmware\n", priv
->name
);
3149 goto err_stop_firmware
;
3152 /* Reclaim memory once firmware is successfully loaded */
3153 mwl8k_release_firmware(priv
);
3156 * Temporarily enable interrupts. Initial firmware host
3157 * commands use interrupts and avoids polling. Disable
3158 * interrupts when done.
3160 iowrite32(MWL8K_A2H_EVENTS
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3162 /* Get config data, mac addrs etc */
3163 rc
= mwl8k_cmd_get_hw_spec(hw
);
3165 printk(KERN_ERR
"%s: Cannot initialise firmware\n", priv
->name
);
3166 goto err_stop_firmware
;
3169 /* Turn radio off */
3170 rc
= mwl8k_cmd_802_11_radio_disable(hw
);
3172 printk(KERN_ERR
"%s: Cannot disable\n", priv
->name
);
3173 goto err_stop_firmware
;
3176 /* Disable interrupts */
3177 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3178 free_irq(priv
->pdev
->irq
, hw
);
3180 rc
= ieee80211_register_hw(hw
);
3182 printk(KERN_ERR
"%s: Cannot register device\n", priv
->name
);
3183 goto err_stop_firmware
;
3186 fw
= (u8
*)&priv
->fw_rev
;
3187 printk(KERN_INFO
"%s: 88W%u %s\n", priv
->name
, priv
->part_num
,
3189 printk(KERN_INFO
"%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n",
3190 priv
->name
, MWL8K_VERSION
, fw
[3], fw
[2], fw
[1], fw
[0]);
3191 printk(KERN_INFO
"%s: MAC Address: %pM\n", priv
->name
,
3192 hw
->wiphy
->perm_addr
);
3197 mwl8k_hw_reset(priv
);
3198 mwl8k_release_firmware(priv
);
3201 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3202 free_irq(priv
->pdev
->irq
, hw
);
3205 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3206 mwl8k_txq_deinit(hw
, i
);
3207 mwl8k_rxq_deinit(hw
, 0);
3210 if (priv
->cookie
!= NULL
)
3211 pci_free_consistent(priv
->pdev
, 4,
3212 priv
->cookie
, priv
->cookie_dma
);
3214 if (priv
->regs
!= NULL
)
3215 pci_iounmap(pdev
, priv
->regs
);
3217 if (priv
->config_wq
!= NULL
)
3218 destroy_workqueue(priv
->config_wq
);
3220 pci_set_drvdata(pdev
, NULL
);
3221 ieee80211_free_hw(hw
);
3224 pci_release_regions(pdev
);
3225 pci_disable_device(pdev
);
3230 static void __devexit
mwl8k_shutdown(struct pci_dev
*pdev
)
3232 printk(KERN_ERR
"===>%s(%u)\n", __func__
, __LINE__
);
3235 static void __devexit
mwl8k_remove(struct pci_dev
*pdev
)
3237 struct ieee80211_hw
*hw
= pci_get_drvdata(pdev
);
3238 struct mwl8k_priv
*priv
;
3245 ieee80211_stop_queues(hw
);
3247 ieee80211_unregister_hw(hw
);
3249 /* Remove tx reclaim tasklet */
3250 tasklet_kill(&priv
->tx_reclaim_task
);
3252 /* Stop config thread */
3253 destroy_workqueue(priv
->config_wq
);
3256 mwl8k_hw_reset(priv
);
3258 /* Return all skbs to mac80211 */
3259 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3260 mwl8k_txq_reclaim(hw
, i
, 1);
3262 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3263 mwl8k_txq_deinit(hw
, i
);
3265 mwl8k_rxq_deinit(hw
, 0);
3267 pci_free_consistent(priv
->pdev
, 4,
3268 priv
->cookie
, priv
->cookie_dma
);
3270 pci_iounmap(pdev
, priv
->regs
);
3271 pci_set_drvdata(pdev
, NULL
);
3272 ieee80211_free_hw(hw
);
3273 pci_release_regions(pdev
);
3274 pci_disable_device(pdev
);
3277 static struct pci_driver mwl8k_driver
= {
3279 .id_table
= mwl8k_table
,
3280 .probe
= mwl8k_probe
,
3281 .remove
= __devexit_p(mwl8k_remove
),
3282 .shutdown
= __devexit_p(mwl8k_shutdown
),
3285 static int __init
mwl8k_init(void)
3287 return pci_register_driver(&mwl8k_driver
);
3290 static void __exit
mwl8k_exit(void)
3292 pci_unregister_driver(&mwl8k_driver
);
3295 module_init(mwl8k_init
);
3296 module_exit(mwl8k_exit
);