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
;
142 /* firmware access lock */
145 /* firmware files and meta data */
146 struct mwl8k_firmware fw
;
149 /* lock held over TX and TX reap */
152 struct ieee80211_vif
*vif
;
154 struct ieee80211_channel
*current_channel
;
156 /* power management status cookie from firmware */
158 dma_addr_t cookie_dma
;
165 * Running count of TX packets in flight, to avoid
166 * iterating over the transmit rings each time.
170 struct mwl8k_rx_queue rxq
[MWL8K_RX_QUEUES
];
171 struct mwl8k_tx_queue txq
[MWL8K_TX_QUEUES
];
174 struct ieee80211_supported_band band
;
175 struct ieee80211_channel channels
[14];
176 struct ieee80211_rate rates
[12];
179 bool radio_short_preamble
;
182 /* Set if PHY config is in progress */
185 /* XXX need to convert this to handle multiple interfaces */
187 u8 capture_bssid
[ETH_ALEN
];
188 struct sk_buff
*beacon_skb
;
191 * This FJ worker has to be global as it is scheduled from the
192 * RX handler. At this point we don't know which interface it
193 * belongs to until the list of bssids waiting to complete join
196 struct work_struct finalize_join_worker
;
198 /* Tasklet to reclaim TX descriptors and buffers after tx */
199 struct tasklet_struct tx_reclaim_task
;
201 /* Work thread to serialize configuration requests */
202 struct workqueue_struct
*config_wq
;
203 struct completion
*hostcmd_wait
;
204 struct completion
*tx_wait
;
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
;
417 dma_addr
= pci_map_single(priv
->pdev
, data
, length
, PCI_DMA_TODEVICE
);
418 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
421 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
422 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
423 iowrite32(MWL8K_H2A_INT_DOORBELL
,
424 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
425 iowrite32(MWL8K_H2A_INT_DUMMY
,
426 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
433 int_code
= ioread32(regs
+ MWL8K_HIU_INT_CODE
);
434 if (int_code
== MWL8K_INT_CODE_CMD_FINISHED
) {
435 iowrite32(0, regs
+ MWL8K_HIU_INT_CODE
);
443 pci_unmap_single(priv
->pdev
, dma_addr
, length
, PCI_DMA_TODEVICE
);
446 * Clear 'command done' interrupt bit.
452 status
= ioread32(priv
->regs
+
453 MWL8K_HIU_A2H_INTERRUPT_STATUS
);
454 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
455 iowrite32(~MWL8K_A2H_INT_OPC_DONE
,
456 priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
457 ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
467 static int mwl8k_load_fw_image(struct mwl8k_priv
*priv
,
468 const u8
*data
, size_t length
)
470 struct mwl8k_cmd_pkt
*cmd
;
474 cmd
= kmalloc(sizeof(*cmd
) + 256, GFP_KERNEL
);
478 cmd
->code
= cpu_to_le16(MWL8K_CMD_CODE_DNLD
);
484 int block_size
= length
> 256 ? 256 : length
;
486 memcpy(cmd
->payload
, data
+ done
, block_size
);
487 cmd
->length
= cpu_to_le16(block_size
);
489 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
,
490 sizeof(*cmd
) + block_size
);
495 length
-= block_size
;
500 rc
= mwl8k_send_fw_load_cmd(priv
, cmd
, sizeof(*cmd
));
508 static int mwl8k_feed_fw_image(struct mwl8k_priv
*priv
,
509 const u8
*data
, size_t length
)
511 unsigned char *buffer
;
512 int may_continue
, rc
= 0;
513 u32 done
, prev_block_size
;
515 buffer
= kmalloc(1024, GFP_KERNEL
);
522 while (may_continue
> 0) {
525 block_size
= ioread32(priv
->regs
+ MWL8K_HIU_SCRATCH
);
526 if (block_size
& 1) {
530 done
+= prev_block_size
;
531 length
-= prev_block_size
;
534 if (block_size
> 1024 || block_size
> length
) {
544 if (block_size
== 0) {
551 prev_block_size
= block_size
;
552 memcpy(buffer
, data
+ done
, block_size
);
554 rc
= mwl8k_send_fw_load_cmd(priv
, buffer
, block_size
);
559 if (!rc
&& length
!= 0)
567 static int mwl8k_load_firmware(struct mwl8k_priv
*priv
)
571 const u8
*ucode
= priv
->fw
.ucode
->data
;
572 size_t ucode_len
= priv
->fw
.ucode
->size
;
573 const u8
*helper
= priv
->fw
.helper
->data
;
574 size_t helper_len
= priv
->fw
.helper
->size
;
576 if (!memcmp(ucode
, "\x01\x00\x00\x00", 4)) {
577 rc
= mwl8k_load_fw_image(priv
, helper
, helper_len
);
579 printk(KERN_ERR
"%s: unable to load firmware "
580 "helper image\n", pci_name(priv
->pdev
));
585 rc
= mwl8k_feed_fw_image(priv
, ucode
, ucode_len
);
587 rc
= mwl8k_load_fw_image(priv
, ucode
, ucode_len
);
591 printk(KERN_ERR
"%s: unable to load firmware data\n",
592 pci_name(priv
->pdev
));
596 iowrite32(MWL8K_MODE_STA
, priv
->regs
+ MWL8K_HIU_GEN_PTR
);
601 if (ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
)
602 == MWL8K_FWSTA_READY
)
607 return loops
? 0 : -ETIMEDOUT
;
612 * Defines shared between transmission and reception.
614 /* HT control fields for firmware */
619 } __attribute__((packed
));
621 /* Firmware Station database operations */
622 #define MWL8K_STA_DB_ADD_ENTRY 0
623 #define MWL8K_STA_DB_MODIFY_ENTRY 1
624 #define MWL8K_STA_DB_DEL_ENTRY 2
625 #define MWL8K_STA_DB_FLUSH 3
627 /* Peer Entry flags - used to define the type of the peer node */
628 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
630 #define MWL8K_IEEE_LEGACY_DATA_RATES 12
631 #define MWL8K_MCS_BITMAP_SIZE 16
633 struct peer_capability_info
{
634 /* Peer type - AP vs. STA. */
637 /* Basic 802.11 capabilities from assoc resp. */
640 /* Set if peer supports 802.11n high throughput (HT). */
643 /* Valid if HT is supported. */
645 __u8 extended_ht_caps
;
646 struct ewc_ht_info ewc_info
;
648 /* Legacy rate table. Intersection of our rates and peer rates. */
649 __u8 legacy_rates
[MWL8K_IEEE_LEGACY_DATA_RATES
];
651 /* HT rate table. Intersection of our rates and peer rates. */
652 __u8 ht_rates
[MWL8K_MCS_BITMAP_SIZE
];
655 /* If set, interoperability mode, no proprietary extensions. */
659 __le16 amsdu_enabled
;
660 } __attribute__((packed
));
662 /* Inline functions to manipulate QoS field in data descriptor. */
663 static inline u16
mwl8k_qos_setbit_eosp(u16 qos
)
665 u16 val_mask
= 1 << 4;
667 /* End of Service Period Bit 4 */
668 return qos
| val_mask
;
671 static inline u16
mwl8k_qos_setbit_ack(u16 qos
, u8 ack_policy
)
675 u16 qos_mask
= ~(val_mask
<< shift
);
677 /* Ack Policy Bit 5-6 */
678 return (qos
& qos_mask
) | ((ack_policy
& val_mask
) << shift
);
681 static inline u16
mwl8k_qos_setbit_amsdu(u16 qos
)
683 u16 val_mask
= 1 << 7;
685 /* AMSDU present Bit 7 */
686 return qos
| val_mask
;
689 static inline u16
mwl8k_qos_setbit_qlen(u16 qos
, u8 len
)
693 u16 qos_mask
= ~(val_mask
<< shift
);
695 /* Queue Length Bits 8-15 */
696 return (qos
& qos_mask
) | ((len
& val_mask
) << shift
);
699 /* DMA header used by firmware and hardware. */
700 struct mwl8k_dma_data
{
702 struct ieee80211_hdr wh
;
703 } __attribute__((packed
));
705 /* Routines to add/remove DMA header from skb. */
706 static inline void mwl8k_remove_dma_header(struct sk_buff
*skb
)
708 struct mwl8k_dma_data
*tr
= (struct mwl8k_dma_data
*)skb
->data
;
709 void *dst
, *src
= &tr
->wh
;
710 int hdrlen
= ieee80211_hdrlen(tr
->wh
.frame_control
);
711 u16 space
= sizeof(struct mwl8k_dma_data
) - hdrlen
;
713 dst
= (void *)tr
+ space
;
715 memmove(dst
, src
, hdrlen
);
716 skb_pull(skb
, space
);
720 static inline void mwl8k_add_dma_header(struct sk_buff
*skb
)
722 struct ieee80211_hdr
*wh
;
724 struct mwl8k_dma_data
*tr
;
726 wh
= (struct ieee80211_hdr
*)skb
->data
;
727 hdrlen
= ieee80211_hdrlen(wh
->frame_control
);
731 * Copy up/down the 802.11 header; the firmware requires
732 * we present a 2-byte payload length followed by a
733 * 4-address header (w/o QoS), followed (optionally) by
734 * any WEP/ExtIV header (but only filled in for CCMP).
736 if (hdrlen
!= sizeof(struct mwl8k_dma_data
))
737 skb_push(skb
, sizeof(struct mwl8k_dma_data
) - hdrlen
);
739 tr
= (struct mwl8k_dma_data
*)skb
->data
;
741 memmove(&tr
->wh
, wh
, hdrlen
);
744 memset(tr
->wh
.addr4
, 0, ETH_ALEN
);
747 * Firmware length is the length of the fully formed "802.11
748 * payload". That is, everything except for the 802.11 header.
749 * This includes all crypto material including the MIC.
751 tr
->fwlen
= cpu_to_le16(pktlen
- hdrlen
);
758 #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02
760 struct mwl8k_rx_desc
{
764 __le32 pkt_phys_addr
;
765 __le32 next_rx_desc_phys_addr
;
775 } __attribute__((packed
));
777 #define MWL8K_RX_DESCS 256
778 #define MWL8K_RX_MAXSZ 3800
780 static int mwl8k_rxq_init(struct ieee80211_hw
*hw
, int index
)
782 struct mwl8k_priv
*priv
= hw
->priv
;
783 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
787 rxq
->rx_desc_count
= 0;
791 size
= MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
);
794 pci_alloc_consistent(priv
->pdev
, size
, &rxq
->rx_desc_dma
);
795 if (rxq
->rx_desc_area
== NULL
) {
796 printk(KERN_ERR
"%s: failed to alloc RX descriptors\n",
800 memset(rxq
->rx_desc_area
, 0, size
);
802 rxq
->rx_skb
= kmalloc(MWL8K_RX_DESCS
*
803 sizeof(*rxq
->rx_skb
), GFP_KERNEL
);
804 if (rxq
->rx_skb
== NULL
) {
805 printk(KERN_ERR
"%s: failed to alloc RX skbuff list\n",
807 pci_free_consistent(priv
->pdev
, size
,
808 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
811 memset(rxq
->rx_skb
, 0, MWL8K_RX_DESCS
* sizeof(*rxq
->rx_skb
));
813 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
814 struct mwl8k_rx_desc
*rx_desc
;
817 rx_desc
= rxq
->rx_desc_area
+ i
;
818 nexti
= (i
+ 1) % MWL8K_RX_DESCS
;
820 rx_desc
->next_rx_desc_phys_addr
=
821 cpu_to_le32(rxq
->rx_desc_dma
822 + nexti
* sizeof(*rx_desc
));
823 rx_desc
->rx_ctrl
= MWL8K_RX_CTRL_OWNED_BY_HOST
;
829 static int rxq_refill(struct ieee80211_hw
*hw
, int index
, int limit
)
831 struct mwl8k_priv
*priv
= hw
->priv
;
832 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
836 while (rxq
->rx_desc_count
< MWL8K_RX_DESCS
&& limit
--) {
840 skb
= dev_alloc_skb(MWL8K_RX_MAXSZ
);
844 rxq
->rx_desc_count
++;
847 rxq
->rx_tail
= (rx
+ 1) % MWL8K_RX_DESCS
;
849 rxq
->rx_desc_area
[rx
].pkt_phys_addr
=
850 cpu_to_le32(pci_map_single(priv
->pdev
, skb
->data
,
851 MWL8K_RX_MAXSZ
, DMA_FROM_DEVICE
));
853 rxq
->rx_desc_area
[rx
].pkt_len
= cpu_to_le16(MWL8K_RX_MAXSZ
);
854 rxq
->rx_skb
[rx
] = skb
;
856 rxq
->rx_desc_area
[rx
].rx_ctrl
= 0;
864 /* Must be called only when the card's reception is completely halted */
865 static void mwl8k_rxq_deinit(struct ieee80211_hw
*hw
, int index
)
867 struct mwl8k_priv
*priv
= hw
->priv
;
868 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
871 for (i
= 0; i
< MWL8K_RX_DESCS
; i
++) {
872 if (rxq
->rx_skb
[i
] != NULL
) {
875 addr
= le32_to_cpu(rxq
->rx_desc_area
[i
].pkt_phys_addr
);
876 pci_unmap_single(priv
->pdev
, addr
, MWL8K_RX_MAXSZ
,
878 kfree_skb(rxq
->rx_skb
[i
]);
879 rxq
->rx_skb
[i
] = NULL
;
886 pci_free_consistent(priv
->pdev
,
887 MWL8K_RX_DESCS
* sizeof(struct mwl8k_rx_desc
),
888 rxq
->rx_desc_area
, rxq
->rx_desc_dma
);
889 rxq
->rx_desc_area
= NULL
;
894 * Scan a list of BSSIDs to process for finalize join.
895 * Allows for extension to process multiple BSSIDs.
898 mwl8k_capture_bssid(struct mwl8k_priv
*priv
, struct ieee80211_hdr
*wh
)
900 return priv
->capture_beacon
&&
901 ieee80211_is_beacon(wh
->frame_control
) &&
902 !compare_ether_addr(wh
->addr3
, priv
->capture_bssid
);
905 static inline void mwl8k_save_beacon(struct mwl8k_priv
*priv
,
908 priv
->capture_beacon
= false;
909 memset(priv
->capture_bssid
, 0, ETH_ALEN
);
912 * Use GFP_ATOMIC as rxq_process is called from
913 * the primary interrupt handler, memory allocation call
916 priv
->beacon_skb
= skb_copy(skb
, GFP_ATOMIC
);
917 if (priv
->beacon_skb
!= NULL
)
918 queue_work(priv
->config_wq
,
919 &priv
->finalize_join_worker
);
922 static int rxq_process(struct ieee80211_hw
*hw
, int index
, int limit
)
924 struct mwl8k_priv
*priv
= hw
->priv
;
925 struct mwl8k_rx_queue
*rxq
= priv
->rxq
+ index
;
929 while (rxq
->rx_desc_count
&& limit
--) {
930 struct mwl8k_rx_desc
*rx_desc
;
932 struct ieee80211_rx_status status
;
934 struct ieee80211_hdr
*wh
;
936 rx_desc
= rxq
->rx_desc_area
+ rxq
->rx_head
;
937 if (!(rx_desc
->rx_ctrl
& MWL8K_RX_CTRL_OWNED_BY_HOST
))
941 skb
= rxq
->rx_skb
[rxq
->rx_head
];
944 rxq
->rx_skb
[rxq
->rx_head
] = NULL
;
946 rxq
->rx_head
= (rxq
->rx_head
+ 1) % MWL8K_RX_DESCS
;
947 rxq
->rx_desc_count
--;
949 addr
= le32_to_cpu(rx_desc
->pkt_phys_addr
);
950 pci_unmap_single(priv
->pdev
, addr
,
951 MWL8K_RX_MAXSZ
, PCI_DMA_FROMDEVICE
);
953 skb_put(skb
, le16_to_cpu(rx_desc
->pkt_len
));
954 mwl8k_remove_dma_header(skb
);
956 wh
= (struct ieee80211_hdr
*)skb
->data
;
959 * Check for pending join operation. save a copy of
960 * the beacon and schedule a tasklet to send finalize
961 * join command to the firmware.
963 if (mwl8k_capture_bssid(priv
, wh
))
964 mwl8k_save_beacon(priv
, skb
);
966 memset(&status
, 0, sizeof(status
));
968 status
.signal
= -rx_desc
->rssi
;
969 status
.noise
= -rx_desc
->noise_level
;
970 status
.qual
= rx_desc
->link_quality
;
974 status
.band
= IEEE80211_BAND_2GHZ
;
975 status
.freq
= ieee80211_channel_to_frequency(rx_desc
->channel
);
976 memcpy(IEEE80211_SKB_RXCB(skb
), &status
, sizeof(status
));
977 ieee80211_rx_irqsafe(hw
, skb
);
987 * Packet transmission.
990 /* Transmit queue assignment. */
992 MWL8K_WME_AC_BK
= 0, /* background access */
993 MWL8K_WME_AC_BE
= 1, /* best effort access */
994 MWL8K_WME_AC_VI
= 2, /* video access */
995 MWL8K_WME_AC_VO
= 3, /* voice access */
998 /* Transmit packet ACK policy */
999 #define MWL8K_TXD_ACK_POLICY_NORMAL 0
1000 #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3
1002 #define GET_TXQ(_ac) (\
1003 ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \
1004 ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \
1005 ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \
1008 #define MWL8K_TXD_STATUS_OK 0x00000001
1009 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1010 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1011 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1012 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1014 struct mwl8k_tx_desc
{
1019 __le32 pkt_phys_addr
;
1021 __u8 dest_MAC_addr
[ETH_ALEN
];
1022 __le32 next_tx_desc_phys_addr
;
1027 } __attribute__((packed
));
1029 #define MWL8K_TX_DESCS 128
1031 static int mwl8k_txq_init(struct ieee80211_hw
*hw
, int index
)
1033 struct mwl8k_priv
*priv
= hw
->priv
;
1034 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1038 memset(&txq
->tx_stats
, 0, sizeof(struct ieee80211_tx_queue_stats
));
1039 txq
->tx_stats
.limit
= MWL8K_TX_DESCS
;
1043 size
= MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
);
1046 pci_alloc_consistent(priv
->pdev
, size
, &txq
->tx_desc_dma
);
1047 if (txq
->tx_desc_area
== NULL
) {
1048 printk(KERN_ERR
"%s: failed to alloc TX descriptors\n",
1052 memset(txq
->tx_desc_area
, 0, size
);
1054 txq
->tx_skb
= kmalloc(MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
),
1056 if (txq
->tx_skb
== NULL
) {
1057 printk(KERN_ERR
"%s: failed to alloc TX skbuff list\n",
1059 pci_free_consistent(priv
->pdev
, size
,
1060 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1063 memset(txq
->tx_skb
, 0, MWL8K_TX_DESCS
* sizeof(*txq
->tx_skb
));
1065 for (i
= 0; i
< MWL8K_TX_DESCS
; i
++) {
1066 struct mwl8k_tx_desc
*tx_desc
;
1069 tx_desc
= txq
->tx_desc_area
+ i
;
1070 nexti
= (i
+ 1) % MWL8K_TX_DESCS
;
1072 tx_desc
->status
= 0;
1073 tx_desc
->next_tx_desc_phys_addr
=
1074 cpu_to_le32(txq
->tx_desc_dma
+
1075 nexti
* sizeof(*tx_desc
));
1081 static inline void mwl8k_tx_start(struct mwl8k_priv
*priv
)
1083 iowrite32(MWL8K_H2A_INT_PPA_READY
,
1084 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1085 iowrite32(MWL8K_H2A_INT_DUMMY
,
1086 priv
->regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1087 ioread32(priv
->regs
+ MWL8K_HIU_INT_CODE
);
1090 static inline int mwl8k_txq_busy(struct mwl8k_priv
*priv
)
1092 return priv
->pending_tx_pkts
;
1095 struct mwl8k_txq_info
{
1104 static int mwl8k_scan_tx_ring(struct mwl8k_priv
*priv
,
1105 struct mwl8k_txq_info txinfo
[],
1108 int count
, desc
, status
;
1109 struct mwl8k_tx_queue
*txq
;
1110 struct mwl8k_tx_desc
*tx_desc
;
1113 memset(txinfo
, 0, num_queues
* sizeof(struct mwl8k_txq_info
));
1114 spin_lock_bh(&priv
->tx_lock
);
1115 for (count
= 0; count
< num_queues
; count
++) {
1116 txq
= priv
->txq
+ count
;
1117 txinfo
[count
].len
= txq
->tx_stats
.len
;
1118 txinfo
[count
].head
= txq
->tx_head
;
1119 txinfo
[count
].tail
= txq
->tx_tail
;
1120 for (desc
= 0; desc
< MWL8K_TX_DESCS
; desc
++) {
1121 tx_desc
= txq
->tx_desc_area
+ desc
;
1122 status
= le32_to_cpu(tx_desc
->status
);
1124 if (status
& MWL8K_TXD_STATUS_FW_OWNED
)
1125 txinfo
[count
].fw_owned
++;
1127 txinfo
[count
].drv_owned
++;
1129 if (tx_desc
->pkt_len
== 0)
1130 txinfo
[count
].unused
++;
1133 spin_unlock_bh(&priv
->tx_lock
);
1138 static int mwl8k_tx_wait_empty(struct ieee80211_hw
*hw
, u32 delay_ms
)
1140 struct mwl8k_priv
*priv
= hw
->priv
;
1141 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1143 unsigned long timeout
;
1147 if (priv
->tx_wait
!= NULL
)
1148 printk(KERN_ERR
"WARNING Previous TXWaitEmpty instance\n");
1150 spin_lock_bh(&priv
->tx_lock
);
1151 count
= mwl8k_txq_busy(priv
);
1153 priv
->tx_wait
= &cmd_wait
;
1155 mwl8k_tx_start(priv
);
1157 spin_unlock_bh(&priv
->tx_lock
);
1160 struct mwl8k_txq_info txinfo
[4];
1164 timeout
= wait_for_completion_timeout(&cmd_wait
,
1165 msecs_to_jiffies(delay_ms
));
1169 spin_lock_bh(&priv
->tx_lock
);
1170 priv
->tx_wait
= NULL
;
1171 newcount
= mwl8k_txq_busy(priv
);
1172 spin_unlock_bh(&priv
->tx_lock
);
1174 printk(KERN_ERR
"%s(%u) TIMEDOUT:%ums Pend:%u-->%u\n",
1175 __func__
, __LINE__
, delay_ms
, count
, newcount
);
1177 mwl8k_scan_tx_ring(priv
, txinfo
, 4);
1178 for (index
= 0; index
< 4; index
++)
1180 "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n",
1185 txinfo
[index
].fw_owned
,
1186 txinfo
[index
].drv_owned
,
1187 txinfo
[index
].unused
);
1195 #define MWL8K_TXD_SUCCESS(status) \
1196 ((status) & (MWL8K_TXD_STATUS_OK | \
1197 MWL8K_TXD_STATUS_OK_RETRY | \
1198 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1200 static void mwl8k_txq_reclaim(struct ieee80211_hw
*hw
, int index
, int force
)
1202 struct mwl8k_priv
*priv
= hw
->priv
;
1203 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1206 while (txq
->tx_stats
.len
> 0) {
1208 struct mwl8k_tx_desc
*tx_desc
;
1211 struct sk_buff
*skb
;
1212 struct ieee80211_tx_info
*info
;
1216 tx_desc
= txq
->tx_desc_area
+ tx
;
1218 status
= le32_to_cpu(tx_desc
->status
);
1220 if (status
& MWL8K_TXD_STATUS_FW_OWNED
) {
1224 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED
);
1227 txq
->tx_head
= (tx
+ 1) % MWL8K_TX_DESCS
;
1228 BUG_ON(txq
->tx_stats
.len
== 0);
1229 txq
->tx_stats
.len
--;
1230 priv
->pending_tx_pkts
--;
1232 addr
= le32_to_cpu(tx_desc
->pkt_phys_addr
);
1233 size
= le16_to_cpu(tx_desc
->pkt_len
);
1234 skb
= txq
->tx_skb
[tx
];
1235 txq
->tx_skb
[tx
] = NULL
;
1237 BUG_ON(skb
== NULL
);
1238 pci_unmap_single(priv
->pdev
, addr
, size
, PCI_DMA_TODEVICE
);
1240 mwl8k_remove_dma_header(skb
);
1242 /* Mark descriptor as unused */
1243 tx_desc
->pkt_phys_addr
= 0;
1244 tx_desc
->pkt_len
= 0;
1246 info
= IEEE80211_SKB_CB(skb
);
1247 ieee80211_tx_info_clear_status(info
);
1248 if (MWL8K_TXD_SUCCESS(status
))
1249 info
->flags
|= IEEE80211_TX_STAT_ACK
;
1251 ieee80211_tx_status_irqsafe(hw
, skb
);
1253 wake
= !priv
->inconfig
&& priv
->radio_on
;
1257 ieee80211_wake_queue(hw
, index
);
1260 /* must be called only when the card's transmit is completely halted */
1261 static void mwl8k_txq_deinit(struct ieee80211_hw
*hw
, int index
)
1263 struct mwl8k_priv
*priv
= hw
->priv
;
1264 struct mwl8k_tx_queue
*txq
= priv
->txq
+ index
;
1266 mwl8k_txq_reclaim(hw
, index
, 1);
1271 pci_free_consistent(priv
->pdev
,
1272 MWL8K_TX_DESCS
* sizeof(struct mwl8k_tx_desc
),
1273 txq
->tx_desc_area
, txq
->tx_desc_dma
);
1274 txq
->tx_desc_area
= NULL
;
1278 mwl8k_txq_xmit(struct ieee80211_hw
*hw
, int index
, struct sk_buff
*skb
)
1280 struct mwl8k_priv
*priv
= hw
->priv
;
1281 struct ieee80211_tx_info
*tx_info
;
1282 struct ieee80211_hdr
*wh
;
1283 struct mwl8k_tx_queue
*txq
;
1284 struct mwl8k_tx_desc
*tx
;
1285 struct mwl8k_dma_data
*tr
;
1286 struct mwl8k_vif
*mwl8k_vif
;
1289 bool qosframe
= false, ampduframe
= false;
1290 bool mcframe
= false, eapolframe
= false;
1291 bool amsduframe
= false;
1294 txq
= priv
->txq
+ index
;
1295 tx
= txq
->tx_desc_area
+ txq
->tx_tail
;
1297 BUG_ON(txq
->tx_skb
[txq
->tx_tail
] != NULL
);
1300 * Append HW DMA header to start of packet.
1302 mwl8k_add_dma_header(skb
);
1304 tx_info
= IEEE80211_SKB_CB(skb
);
1305 mwl8k_vif
= MWL8K_VIF(tx_info
->control
.vif
);
1306 tr
= (struct mwl8k_dma_data
*)skb
->data
;
1308 fc
= wh
->frame_control
;
1309 qosframe
= ieee80211_is_data_qos(fc
);
1310 mcframe
= is_multicast_ether_addr(wh
->addr1
);
1311 ampduframe
= !!(tx_info
->flags
& IEEE80211_TX_CTL_AMPDU
);
1313 if (tx_info
->flags
& IEEE80211_TX_CTL_ASSIGN_SEQ
) {
1314 u16 seqno
= mwl8k_vif
->seqno
;
1315 wh
->seq_ctrl
&= cpu_to_le16(IEEE80211_SCTL_FRAG
);
1316 wh
->seq_ctrl
|= cpu_to_le16(seqno
<< 4);
1317 mwl8k_vif
->seqno
= seqno
++ % 4096;
1321 qos
= le16_to_cpu(*((__le16
*)ieee80211_get_qos_ctl(wh
)));
1323 dma
= pci_map_single(priv
->pdev
, skb
->data
,
1324 skb
->len
, PCI_DMA_TODEVICE
);
1326 if (pci_dma_mapping_error(priv
->pdev
, dma
)) {
1327 printk(KERN_DEBUG
"%s: failed to dma map skb, "
1328 "dropping TX frame.\n", priv
->name
);
1332 return NETDEV_TX_OK
;
1335 /* Set desc header, cpu bit order. */
1338 tx
->tx_priority
= index
;
1339 tx
->qos_control
= 0;
1341 tx
->peer_id
= mwl8k_vif
->peer_id
;
1343 amsduframe
= !!(qos
& IEEE80211_QOS_CONTROL_A_MSDU_PRESENT
);
1345 /* Setup firmware control bit fields for each frame type. */
1346 if (ieee80211_is_mgmt(fc
) || ieee80211_is_ctl(fc
)) {
1348 qos
= mwl8k_qos_setbit_eosp(qos
);
1349 /* Set Queue size to unspecified */
1350 qos
= mwl8k_qos_setbit_qlen(qos
, 0xff);
1351 } else if (ieee80211_is_data(fc
)) {
1354 tx
->status
|= MWL8K_TXD_STATUS_MULTICAST_TX
;
1357 * Tell firmware to not send EAPOL pkts in an
1358 * aggregate. Verify against mac80211 tx path. If
1359 * stack turns off AMPDU for an EAPOL frame this
1360 * check will be removed.
1363 qos
= mwl8k_qos_setbit_ack(qos
,
1364 MWL8K_TXD_ACK_POLICY_NORMAL
);
1366 /* Send pkt in an aggregate if AMPDU frame. */
1368 qos
= mwl8k_qos_setbit_ack(qos
,
1369 MWL8K_TXD_ACK_POLICY_BLOCKACK
);
1371 qos
= mwl8k_qos_setbit_ack(qos
,
1372 MWL8K_TXD_ACK_POLICY_NORMAL
);
1375 qos
= mwl8k_qos_setbit_amsdu(qos
);
1379 /* Convert to little endian */
1380 tx
->qos_control
= cpu_to_le16(qos
);
1381 tx
->status
= cpu_to_le32(tx
->status
);
1382 tx
->pkt_phys_addr
= cpu_to_le32(dma
);
1383 tx
->pkt_len
= cpu_to_le16(skb
->len
);
1385 txq
->tx_skb
[txq
->tx_tail
] = skb
;
1387 spin_lock_bh(&priv
->tx_lock
);
1389 tx
->status
= cpu_to_le32(MWL8K_TXD_STATUS_OK
|
1390 MWL8K_TXD_STATUS_FW_OWNED
);
1392 txq
->tx_stats
.len
++;
1393 priv
->pending_tx_pkts
++;
1394 txq
->tx_stats
.count
++;
1397 if (txq
->tx_tail
== MWL8K_TX_DESCS
)
1399 if (txq
->tx_head
== txq
->tx_tail
)
1400 ieee80211_stop_queue(hw
, index
);
1402 if (priv
->inconfig
) {
1404 * Silently queue packet when we are in the middle of
1405 * a config cycle. Notify firmware only if we are
1406 * waiting for TXQs to empty. If a packet is sent
1407 * before .config() is complete, perhaps it is better
1408 * to drop the packet, as the channel is being changed
1409 * and the packet will end up on the wrong channel.
1411 printk(KERN_ERR
"%s(): WARNING TX activity while "
1412 "in config\n", __func__
);
1414 if (priv
->tx_wait
!= NULL
)
1415 mwl8k_tx_start(priv
);
1417 mwl8k_tx_start(priv
);
1419 spin_unlock_bh(&priv
->tx_lock
);
1421 return NETDEV_TX_OK
;
1426 * Command processing.
1429 /* Timeout firmware commands after 2000ms */
1430 #define MWL8K_CMD_TIMEOUT_MS 2000
1432 static int mwl8k_post_cmd(struct ieee80211_hw
*hw
, struct mwl8k_cmd_pkt
*cmd
)
1434 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
1435 struct mwl8k_priv
*priv
= hw
->priv
;
1436 void __iomem
*regs
= priv
->regs
;
1437 dma_addr_t dma_addr
;
1438 unsigned int dma_size
;
1440 unsigned long timeout
= 0;
1443 cmd
->result
= 0xFFFF;
1444 dma_size
= le16_to_cpu(cmd
->length
);
1445 dma_addr
= pci_map_single(priv
->pdev
, cmd
, dma_size
,
1446 PCI_DMA_BIDIRECTIONAL
);
1447 if (pci_dma_mapping_error(priv
->pdev
, dma_addr
))
1450 if (priv
->hostcmd_wait
!= NULL
)
1451 printk(KERN_ERR
"WARNING host command in progress\n");
1453 spin_lock_irq(&priv
->fw_lock
);
1454 priv
->hostcmd_wait
= &cmd_wait
;
1455 iowrite32(dma_addr
, regs
+ MWL8K_HIU_GEN_PTR
);
1456 iowrite32(MWL8K_H2A_INT_DOORBELL
,
1457 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1458 iowrite32(MWL8K_H2A_INT_DUMMY
,
1459 regs
+ MWL8K_HIU_H2A_INTERRUPT_EVENTS
);
1460 spin_unlock_irq(&priv
->fw_lock
);
1462 timeout
= wait_for_completion_timeout(&cmd_wait
,
1463 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS
));
1465 pci_unmap_single(priv
->pdev
, dma_addr
, dma_size
,
1466 PCI_DMA_BIDIRECTIONAL
);
1469 spin_lock_irq(&priv
->fw_lock
);
1470 priv
->hostcmd_wait
= NULL
;
1471 spin_unlock_irq(&priv
->fw_lock
);
1472 printk(KERN_ERR
"%s: Command %s timeout after %u ms\n",
1474 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1475 MWL8K_CMD_TIMEOUT_MS
);
1478 rc
= cmd
->result
? -EINVAL
: 0;
1480 printk(KERN_ERR
"%s: Command %s error 0x%x\n",
1482 mwl8k_cmd_name(cmd
->code
, buf
, sizeof(buf
)),
1492 struct mwl8k_cmd_get_hw_spec
{
1493 struct mwl8k_cmd_pkt header
;
1495 __u8 host_interface
;
1497 __u8 perm_addr
[ETH_ALEN
];
1502 __u8 mcs_bitmap
[16];
1503 __le32 rx_queue_ptr
;
1504 __le32 num_tx_queues
;
1505 __le32 tx_queue_ptrs
[MWL8K_TX_QUEUES
];
1507 __le32 num_tx_desc_per_queue
;
1508 __le32 total_rx_desc
;
1509 } __attribute__((packed
));
1511 static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw
*hw
)
1513 struct mwl8k_priv
*priv
= hw
->priv
;
1514 struct mwl8k_cmd_get_hw_spec
*cmd
;
1518 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1522 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_HW_SPEC
);
1523 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1525 memset(cmd
->perm_addr
, 0xff, sizeof(cmd
->perm_addr
));
1526 cmd
->ps_cookie
= cpu_to_le32(priv
->cookie_dma
);
1527 cmd
->rx_queue_ptr
= cpu_to_le32(priv
->rxq
[0].rx_desc_dma
);
1528 cmd
->num_tx_queues
= cpu_to_le32(MWL8K_TX_QUEUES
);
1529 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
1530 cmd
->tx_queue_ptrs
[i
] = cpu_to_le32(priv
->txq
[i
].tx_desc_dma
);
1531 cmd
->num_tx_desc_per_queue
= cpu_to_le32(MWL8K_TX_DESCS
);
1532 cmd
->total_rx_desc
= cpu_to_le32(MWL8K_RX_DESCS
);
1534 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1537 SET_IEEE80211_PERM_ADDR(hw
, cmd
->perm_addr
);
1538 priv
->num_mcaddrs
= le16_to_cpu(cmd
->num_mcaddrs
);
1539 priv
->fw_rev
= le32_to_cpu(cmd
->fw_rev
);
1540 priv
->hw_rev
= cmd
->hw_rev
;
1548 * CMD_MAC_MULTICAST_ADR.
1550 struct mwl8k_cmd_mac_multicast_adr
{
1551 struct mwl8k_cmd_pkt header
;
1554 __u8 addr
[0][ETH_ALEN
];
1557 #define MWL8K_ENABLE_RX_MULTICAST 0x000F
1559 static struct mwl8k_cmd_pkt
*
1560 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw
*hw
,
1561 int mc_count
, struct dev_addr_list
*mclist
)
1563 struct mwl8k_priv
*priv
= hw
->priv
;
1564 struct mwl8k_cmd_mac_multicast_adr
*cmd
;
1568 if (mc_count
> priv
->num_mcaddrs
)
1569 mc_count
= priv
->num_mcaddrs
;
1571 size
= sizeof(*cmd
) + mc_count
* ETH_ALEN
;
1573 cmd
= kzalloc(size
, GFP_ATOMIC
);
1577 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR
);
1578 cmd
->header
.length
= cpu_to_le16(size
);
1579 cmd
->action
= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST
);
1580 cmd
->numaddr
= cpu_to_le16(mc_count
);
1582 for (i
= 0; i
< mc_count
&& mclist
; i
++) {
1583 if (mclist
->da_addrlen
!= ETH_ALEN
) {
1587 memcpy(cmd
->addr
[i
], mclist
->da_addr
, ETH_ALEN
);
1588 mclist
= mclist
->next
;
1591 return &cmd
->header
;
1595 * CMD_802_11_GET_STAT.
1597 struct mwl8k_cmd_802_11_get_stat
{
1598 struct mwl8k_cmd_pkt header
;
1601 } __attribute__((packed
));
1603 #define MWL8K_STAT_ACK_FAILURE 9
1604 #define MWL8K_STAT_RTS_FAILURE 12
1605 #define MWL8K_STAT_FCS_ERROR 24
1606 #define MWL8K_STAT_RTS_SUCCESS 11
1608 static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw
*hw
,
1609 struct ieee80211_low_level_stats
*stats
)
1611 struct mwl8k_cmd_802_11_get_stat
*cmd
;
1614 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1618 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_GET_STAT
);
1619 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1620 cmd
->action
= cpu_to_le16(MWL8K_CMD_GET
);
1622 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1624 stats
->dot11ACKFailureCount
=
1625 le32_to_cpu(cmd
->stats
[MWL8K_STAT_ACK_FAILURE
]);
1626 stats
->dot11RTSFailureCount
=
1627 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_FAILURE
]);
1628 stats
->dot11FCSErrorCount
=
1629 le32_to_cpu(cmd
->stats
[MWL8K_STAT_FCS_ERROR
]);
1630 stats
->dot11RTSSuccessCount
=
1631 le32_to_cpu(cmd
->stats
[MWL8K_STAT_RTS_SUCCESS
]);
1639 * CMD_802_11_RADIO_CONTROL.
1641 struct mwl8k_cmd_802_11_radio_control
{
1642 struct mwl8k_cmd_pkt header
;
1646 } __attribute__((packed
));
1649 mwl8k_cmd_802_11_radio_control(struct ieee80211_hw
*hw
, bool enable
, bool force
)
1651 struct mwl8k_priv
*priv
= hw
->priv
;
1652 struct mwl8k_cmd_802_11_radio_control
*cmd
;
1655 if (enable
== priv
->radio_on
&& !force
)
1658 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1662 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RADIO_CONTROL
);
1663 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1664 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1665 cmd
->control
= cpu_to_le16(priv
->radio_short_preamble
? 3 : 1);
1666 cmd
->radio_on
= cpu_to_le16(enable
? 0x0001 : 0x0000);
1668 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1672 priv
->radio_on
= enable
;
1677 static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw
*hw
)
1679 return mwl8k_cmd_802_11_radio_control(hw
, 0, 0);
1682 static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw
*hw
)
1684 return mwl8k_cmd_802_11_radio_control(hw
, 1, 0);
1688 mwl8k_set_radio_preamble(struct ieee80211_hw
*hw
, bool short_preamble
)
1690 struct mwl8k_priv
*priv
;
1692 if (hw
== NULL
|| hw
->priv
== NULL
)
1696 priv
->radio_short_preamble
= short_preamble
;
1698 return mwl8k_cmd_802_11_radio_control(hw
, 1, 1);
1702 * CMD_802_11_RF_TX_POWER.
1704 #define MWL8K_TX_POWER_LEVEL_TOTAL 8
1706 struct mwl8k_cmd_802_11_rf_tx_power
{
1707 struct mwl8k_cmd_pkt header
;
1709 __le16 support_level
;
1710 __le16 current_level
;
1712 __le16 power_level_list
[MWL8K_TX_POWER_LEVEL_TOTAL
];
1713 } __attribute__((packed
));
1715 static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw
*hw
, int dBm
)
1717 struct mwl8k_cmd_802_11_rf_tx_power
*cmd
;
1720 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1724 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RF_TX_POWER
);
1725 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1726 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1727 cmd
->support_level
= cpu_to_le16(dBm
);
1729 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1738 struct mwl8k_cmd_set_pre_scan
{
1739 struct mwl8k_cmd_pkt header
;
1740 } __attribute__((packed
));
1742 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw
*hw
)
1744 struct mwl8k_cmd_set_pre_scan
*cmd
;
1747 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1751 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN
);
1752 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1754 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1761 * CMD_SET_POST_SCAN.
1763 struct mwl8k_cmd_set_post_scan
{
1764 struct mwl8k_cmd_pkt header
;
1766 __u8 bssid
[ETH_ALEN
];
1767 } __attribute__((packed
));
1770 mwl8k_cmd_set_post_scan(struct ieee80211_hw
*hw
, __u8
*mac
)
1772 struct mwl8k_cmd_set_post_scan
*cmd
;
1775 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1779 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_POST_SCAN
);
1780 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1782 memcpy(cmd
->bssid
, mac
, ETH_ALEN
);
1784 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1791 * CMD_SET_RF_CHANNEL.
1793 struct mwl8k_cmd_set_rf_channel
{
1794 struct mwl8k_cmd_pkt header
;
1796 __u8 current_channel
;
1797 __le32 channel_flags
;
1798 } __attribute__((packed
));
1800 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw
*hw
,
1801 struct ieee80211_channel
*channel
)
1803 struct mwl8k_cmd_set_rf_channel
*cmd
;
1806 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1810 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL
);
1811 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1812 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1813 cmd
->current_channel
= channel
->hw_value
;
1814 if (channel
->band
== IEEE80211_BAND_2GHZ
)
1815 cmd
->channel_flags
= cpu_to_le32(0x00000081);
1817 cmd
->channel_flags
= cpu_to_le32(0x00000000);
1819 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1828 struct mwl8k_cmd_set_slot
{
1829 struct mwl8k_cmd_pkt header
;
1832 } __attribute__((packed
));
1834 static int mwl8k_cmd_set_slot(struct ieee80211_hw
*hw
, bool short_slot_time
)
1836 struct mwl8k_cmd_set_slot
*cmd
;
1839 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1843 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_SLOT
);
1844 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1845 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1846 cmd
->short_slot
= short_slot_time
;
1848 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1857 struct mwl8k_cmd_mimo_config
{
1858 struct mwl8k_cmd_pkt header
;
1860 __u8 rx_antenna_map
;
1861 __u8 tx_antenna_map
;
1862 } __attribute__((packed
));
1864 static int mwl8k_cmd_mimo_config(struct ieee80211_hw
*hw
, __u8 rx
, __u8 tx
)
1866 struct mwl8k_cmd_mimo_config
*cmd
;
1869 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1873 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_MIMO_CONFIG
);
1874 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1875 cmd
->action
= cpu_to_le32((u32
)MWL8K_CMD_SET
);
1876 cmd
->rx_antenna_map
= rx
;
1877 cmd
->tx_antenna_map
= tx
;
1879 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1886 * CMD_ENABLE_SNIFFER.
1888 struct mwl8k_cmd_enable_sniffer
{
1889 struct mwl8k_cmd_pkt header
;
1891 } __attribute__((packed
));
1893 static int mwl8k_enable_sniffer(struct ieee80211_hw
*hw
, bool enable
)
1895 struct mwl8k_cmd_enable_sniffer
*cmd
;
1898 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1902 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER
);
1903 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1904 cmd
->action
= cpu_to_le32(!!enable
);
1906 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1913 * CMD_SET_RATEADAPT_MODE.
1915 struct mwl8k_cmd_set_rate_adapt_mode
{
1916 struct mwl8k_cmd_pkt header
;
1919 } __attribute__((packed
));
1921 static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw
*hw
, __u16 mode
)
1923 struct mwl8k_cmd_set_rate_adapt_mode
*cmd
;
1926 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1930 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE
);
1931 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1932 cmd
->action
= cpu_to_le16(MWL8K_CMD_SET
);
1933 cmd
->mode
= cpu_to_le16(mode
);
1935 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1944 struct mwl8k_cmd_set_wmm
{
1945 struct mwl8k_cmd_pkt header
;
1947 } __attribute__((packed
));
1949 static int mwl8k_set_wmm(struct ieee80211_hw
*hw
, bool enable
)
1951 struct mwl8k_priv
*priv
= hw
->priv
;
1952 struct mwl8k_cmd_set_wmm
*cmd
;
1955 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1959 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_WMM_MODE
);
1960 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1961 cmd
->action
= cpu_to_le16(!!enable
);
1963 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
1967 priv
->wmm_enabled
= enable
;
1973 * CMD_SET_RTS_THRESHOLD.
1975 struct mwl8k_cmd_rts_threshold
{
1976 struct mwl8k_cmd_pkt header
;
1979 } __attribute__((packed
));
1981 static int mwl8k_rts_threshold(struct ieee80211_hw
*hw
,
1982 u16 action
, u16
*threshold
)
1984 struct mwl8k_cmd_rts_threshold
*cmd
;
1987 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
1991 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD
);
1992 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
1993 cmd
->action
= cpu_to_le16(action
);
1994 cmd
->threshold
= cpu_to_le16(*threshold
);
1996 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2003 * CMD_SET_EDCA_PARAMS.
2005 struct mwl8k_cmd_set_edca_params
{
2006 struct mwl8k_cmd_pkt header
;
2008 /* See MWL8K_SET_EDCA_XXX below */
2011 /* TX opportunity in units of 32 us */
2014 /* Log exponent of max contention period: 0...15*/
2017 /* Log exponent of min contention period: 0...15 */
2020 /* Adaptive interframe spacing in units of 32us */
2023 /* TX queue to configure */
2025 } __attribute__((packed
));
2027 #define MWL8K_SET_EDCA_CW 0x01
2028 #define MWL8K_SET_EDCA_TXOP 0x02
2029 #define MWL8K_SET_EDCA_AIFS 0x04
2031 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
2032 MWL8K_SET_EDCA_TXOP | \
2033 MWL8K_SET_EDCA_AIFS)
2036 mwl8k_set_edca_params(struct ieee80211_hw
*hw
, __u8 qnum
,
2037 __u16 cw_min
, __u16 cw_max
,
2038 __u8 aifs
, __u16 txop
)
2040 struct mwl8k_cmd_set_edca_params
*cmd
;
2043 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2047 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS
);
2048 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2049 cmd
->action
= cpu_to_le16(MWL8K_SET_EDCA_ALL
);
2050 cmd
->txop
= cpu_to_le16(txop
);
2051 cmd
->log_cw_max
= (u8
)ilog2(cw_max
+ 1);
2052 cmd
->log_cw_min
= (u8
)ilog2(cw_min
+ 1);
2056 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2063 * CMD_FINALIZE_JOIN.
2066 /* FJ beacon buffer size is compiled into the firmware. */
2067 #define MWL8K_FJ_BEACON_MAXLEN 128
2069 struct mwl8k_cmd_finalize_join
{
2070 struct mwl8k_cmd_pkt header
;
2071 __le32 sleep_interval
; /* Number of beacon periods to sleep */
2072 __u8 beacon_data
[MWL8K_FJ_BEACON_MAXLEN
];
2073 } __attribute__((packed
));
2075 static int mwl8k_finalize_join(struct ieee80211_hw
*hw
, void *frame
,
2076 __u16 framelen
, __u16 dtim
)
2078 struct mwl8k_cmd_finalize_join
*cmd
;
2079 struct ieee80211_mgmt
*payload
= frame
;
2087 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2091 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN
);
2092 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2093 cmd
->sleep_interval
= cpu_to_le32(dtim
? dtim
: 1);
2095 hdrlen
= ieee80211_hdrlen(payload
->frame_control
);
2097 payload_len
= framelen
> hdrlen
? framelen
- hdrlen
: 0;
2099 /* XXX TBD Might just have to abort and return an error */
2100 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2101 printk(KERN_ERR
"%s(): WARNING: Incomplete beacon "
2102 "sent to firmware. Sz=%u MAX=%u\n", __func__
,
2103 payload_len
, MWL8K_FJ_BEACON_MAXLEN
);
2105 if (payload_len
> MWL8K_FJ_BEACON_MAXLEN
)
2106 payload_len
= MWL8K_FJ_BEACON_MAXLEN
;
2108 if (payload
&& payload_len
)
2109 memcpy(cmd
->beacon_data
, &payload
->u
.beacon
, payload_len
);
2111 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2119 struct mwl8k_cmd_update_sta_db
{
2120 struct mwl8k_cmd_pkt header
;
2122 /* See STADB_ACTION_TYPE */
2125 /* Peer MAC address */
2126 __u8 peer_addr
[ETH_ALEN
];
2130 /* Peer info - valid during add/update. */
2131 struct peer_capability_info peer_info
;
2132 } __attribute__((packed
));
2134 static int mwl8k_cmd_update_sta_db(struct ieee80211_hw
*hw
,
2135 struct ieee80211_vif
*vif
, __u32 action
)
2137 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2138 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2139 struct mwl8k_cmd_update_sta_db
*cmd
;
2140 struct peer_capability_info
*peer_info
;
2141 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2145 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2149 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_UPDATE_STADB
);
2150 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2152 cmd
->action
= cpu_to_le32(action
);
2153 peer_info
= &cmd
->peer_info
;
2154 memcpy(cmd
->peer_addr
, mv_vif
->bssid
, ETH_ALEN
);
2157 case MWL8K_STA_DB_ADD_ENTRY
:
2158 case MWL8K_STA_DB_MODIFY_ENTRY
:
2159 /* Build peer_info block */
2160 peer_info
->peer_type
= MWL8K_PEER_TYPE_ACCESSPOINT
;
2161 peer_info
->basic_caps
= cpu_to_le16(info
->assoc_capability
);
2162 peer_info
->interop
= 1;
2163 peer_info
->amsdu_enabled
= 0;
2165 rates
= peer_info
->legacy_rates
;
2166 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2167 rates
[count
] = bitrates
[count
].hw_value
;
2169 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2171 mv_vif
->peer_id
= peer_info
->station_id
;
2175 case MWL8K_STA_DB_DEL_ENTRY
:
2176 case MWL8K_STA_DB_FLUSH
:
2178 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2180 mv_vif
->peer_id
= 0;
2191 #define MWL8K_RATE_INDEX_MAX_ARRAY 14
2193 #define MWL8K_FRAME_PROT_DISABLED 0x00
2194 #define MWL8K_FRAME_PROT_11G 0x07
2195 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2196 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2198 struct mwl8k_cmd_update_set_aid
{
2199 struct mwl8k_cmd_pkt header
;
2202 /* AP's MAC address (BSSID) */
2203 __u8 bssid
[ETH_ALEN
];
2204 __le16 protection_mode
;
2205 __u8 supp_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2206 } __attribute__((packed
));
2208 static int mwl8k_cmd_set_aid(struct ieee80211_hw
*hw
,
2209 struct ieee80211_vif
*vif
)
2211 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2212 struct ieee80211_bss_conf
*info
= &mv_vif
->bss_info
;
2213 struct mwl8k_cmd_update_set_aid
*cmd
;
2214 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2219 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2223 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_AID
);
2224 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2225 cmd
->aid
= cpu_to_le16(info
->aid
);
2227 memcpy(cmd
->bssid
, mv_vif
->bssid
, ETH_ALEN
);
2229 if (info
->use_cts_prot
) {
2230 prot_mode
= MWL8K_FRAME_PROT_11G
;
2232 switch (info
->ht_operation_mode
&
2233 IEEE80211_HT_OP_MODE_PROTECTION
) {
2234 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ
:
2235 prot_mode
= MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY
;
2237 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED
:
2238 prot_mode
= MWL8K_FRAME_PROT_11N_HT_ALL
;
2241 prot_mode
= MWL8K_FRAME_PROT_DISABLED
;
2245 cmd
->protection_mode
= cpu_to_le16(prot_mode
);
2247 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2248 cmd
->supp_rates
[count
] = bitrates
[count
].hw_value
;
2250 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2259 struct mwl8k_cmd_update_rateset
{
2260 struct mwl8k_cmd_pkt header
;
2261 __u8 legacy_rates
[MWL8K_RATE_INDEX_MAX_ARRAY
];
2263 /* Bitmap for supported MCS codes. */
2264 __u8 mcs_set
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2265 __u8 reserved
[MWL8K_IEEE_LEGACY_DATA_RATES
];
2266 } __attribute__((packed
));
2268 static int mwl8k_update_rateset(struct ieee80211_hw
*hw
,
2269 struct ieee80211_vif
*vif
)
2271 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
2272 struct mwl8k_cmd_update_rateset
*cmd
;
2273 struct ieee80211_rate
*bitrates
= mv_vif
->legacy_rates
;
2277 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2281 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_SET_RATE
);
2282 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2284 for (count
= 0; count
< mv_vif
->legacy_nrates
; count
++)
2285 cmd
->legacy_rates
[count
] = bitrates
[count
].hw_value
;
2287 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2294 * CMD_USE_FIXED_RATE.
2296 #define MWL8K_RATE_TABLE_SIZE 8
2297 #define MWL8K_UCAST_RATE 0
2298 #define MWL8K_USE_AUTO_RATE 0x0002
2300 struct mwl8k_rate_entry
{
2301 /* Set to 1 if HT rate, 0 if legacy. */
2304 /* Set to 1 to use retry_count field. */
2305 __le32 enable_retry
;
2307 /* Specified legacy rate or MCS. */
2310 /* Number of allowed retries. */
2312 } __attribute__((packed
));
2314 struct mwl8k_rate_table
{
2315 /* 1 to allow specified rate and below */
2316 __le32 allow_rate_drop
;
2318 struct mwl8k_rate_entry rate_entry
[MWL8K_RATE_TABLE_SIZE
];
2319 } __attribute__((packed
));
2321 struct mwl8k_cmd_use_fixed_rate
{
2322 struct mwl8k_cmd_pkt header
;
2324 struct mwl8k_rate_table rate_table
;
2326 /* Unicast, Broadcast or Multicast */
2330 } __attribute__((packed
));
2332 static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw
*hw
,
2333 u32 action
, u32 rate_type
, struct mwl8k_rate_table
*rate_table
)
2335 struct mwl8k_cmd_use_fixed_rate
*cmd
;
2339 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
2343 cmd
->header
.code
= cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE
);
2344 cmd
->header
.length
= cpu_to_le16(sizeof(*cmd
));
2346 cmd
->action
= cpu_to_le32(action
);
2347 cmd
->rate_type
= cpu_to_le32(rate_type
);
2349 if (rate_table
!= NULL
) {
2350 /* Copy over each field manually so
2351 * that bitflipping can be done
2353 cmd
->rate_table
.allow_rate_drop
=
2354 cpu_to_le32(rate_table
->allow_rate_drop
);
2355 cmd
->rate_table
.num_rates
=
2356 cpu_to_le32(rate_table
->num_rates
);
2358 for (count
= 0; count
< rate_table
->num_rates
; count
++) {
2359 struct mwl8k_rate_entry
*dst
=
2360 &cmd
->rate_table
.rate_entry
[count
];
2361 struct mwl8k_rate_entry
*src
=
2362 &rate_table
->rate_entry
[count
];
2364 dst
->is_ht_rate
= cpu_to_le32(src
->is_ht_rate
);
2365 dst
->enable_retry
= cpu_to_le32(src
->enable_retry
);
2366 dst
->rate
= cpu_to_le32(src
->rate
);
2367 dst
->retry_count
= cpu_to_le32(src
->retry_count
);
2371 rc
= mwl8k_post_cmd(hw
, &cmd
->header
);
2379 * Interrupt handling.
2381 static irqreturn_t
mwl8k_interrupt(int irq
, void *dev_id
)
2383 struct ieee80211_hw
*hw
= dev_id
;
2384 struct mwl8k_priv
*priv
= hw
->priv
;
2387 status
= ioread32(priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2388 iowrite32(~status
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
2393 if (status
& MWL8K_A2H_INT_TX_DONE
)
2394 tasklet_schedule(&priv
->tx_reclaim_task
);
2396 if (status
& MWL8K_A2H_INT_RX_READY
) {
2397 while (rxq_process(hw
, 0, 1))
2398 rxq_refill(hw
, 0, 1);
2401 if (status
& MWL8K_A2H_INT_OPC_DONE
) {
2402 if (priv
->hostcmd_wait
!= NULL
) {
2403 complete(priv
->hostcmd_wait
);
2404 priv
->hostcmd_wait
= NULL
;
2408 if (status
& MWL8K_A2H_INT_QUEUE_EMPTY
) {
2409 if (!priv
->inconfig
&&
2411 mwl8k_txq_busy(priv
))
2412 mwl8k_tx_start(priv
);
2420 * Core driver operations.
2422 static int mwl8k_tx(struct ieee80211_hw
*hw
, struct sk_buff
*skb
)
2424 struct mwl8k_priv
*priv
= hw
->priv
;
2425 int index
= skb_get_queue_mapping(skb
);
2428 if (priv
->current_channel
== NULL
) {
2429 printk(KERN_DEBUG
"%s: dropped TX frame since radio "
2430 "disabled\n", priv
->name
);
2432 return NETDEV_TX_OK
;
2435 rc
= mwl8k_txq_xmit(hw
, index
, skb
);
2440 struct mwl8k_work_struct
{
2441 /* Initialized by mwl8k_queue_work(). */
2442 struct work_struct wt
;
2444 /* Required field passed in to mwl8k_queue_work(). */
2445 struct ieee80211_hw
*hw
;
2447 /* Required field passed in to mwl8k_queue_work(). */
2448 int (*wfunc
)(struct work_struct
*w
);
2450 /* Initialized by mwl8k_queue_work(). */
2451 struct completion
*cmd_wait
;
2457 * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX
2458 * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS.
2462 /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */
2463 unsigned long timeout_ms
;
2465 /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */
2466 u32 txwait_attempts
;
2468 /* Optional field. Defaults to MWL8K_TXWAIT_MS. */
2473 /* Flags controlling behavior of config queue requests */
2475 /* Caller spins while waiting for completion. */
2476 #define MWL8K_WQ_SPIN 0x00000001
2478 /* Wait for TX queues to empty before proceeding with configuration. */
2479 #define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002
2481 /* Queue request and return immediately. */
2482 #define MWL8K_WQ_POST_REQUEST 0x00000004
2485 * Caller sleeps and waits for task complete notification.
2486 * Do not use in atomic context.
2488 #define MWL8K_WQ_SLEEP 0x00000008
2490 /* Free work struct when task is done. */
2491 #define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010
2494 * Config request is queued and returns to caller imediately. Use
2495 * this in atomic context. Work struct is freed by mwl8k_queue_work()
2496 * when this flag is set.
2498 #define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \
2499 MWL8K_WQ_FREE_WORKSTRUCT)
2501 /* Default work queue behavior is to sleep and wait for tx completion. */
2502 #define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY)
2505 * Default config request timeout. Add adjustments to make sure the
2506 * config thread waits long enough for both tx wait and cmd wait before
2510 /* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */
2511 #define MWL8K_TXWAIT_TIMEOUT_MS 1000
2513 /* Default number of TX wait attempts. */
2514 #define MWL8K_WQ_TXWAIT_ATTEMPTS 4
2516 /* Total time to wait for TXQ to drain. */
2517 #define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \
2518 MWL8K_WQ_TXWAIT_ATTEMPTS)
2520 /* Scheduling slop. */
2521 #define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200
2523 #define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \
2525 MWL8K_OS_SCHEDULE_OVERHEAD_MS)
2527 static void mwl8k_config_thread(struct work_struct
*wt
)
2529 struct mwl8k_work_struct
*worker
= (struct mwl8k_work_struct
*)wt
;
2530 struct ieee80211_hw
*hw
= worker
->hw
;
2531 struct mwl8k_priv
*priv
= hw
->priv
;
2534 spin_lock_irq(&priv
->tx_lock
);
2535 priv
->inconfig
= true;
2536 spin_unlock_irq(&priv
->tx_lock
);
2538 ieee80211_stop_queues(hw
);
2541 * Wait for host queues to drain before doing PHY
2542 * reconfiguration. This avoids interrupting any in-flight
2543 * DMA transfers to the hardware.
2545 if (worker
->options
& MWL8K_WQ_TX_WAIT_EMPTY
) {
2549 u32 tx_wait_attempts
= worker
->txwait_attempts
;
2551 time_remaining
= worker
->tx_timeout_ms
;
2552 if (!tx_wait_attempts
)
2553 tx_wait_attempts
= 1;
2555 timeout
= worker
->tx_timeout_ms
/tx_wait_attempts
;
2559 iter
= tx_wait_attempts
;
2563 if (time_remaining
> timeout
) {
2564 time_remaining
-= timeout
;
2565 wait_time
= timeout
;
2567 wait_time
= time_remaining
;
2572 rc
= mwl8k_tx_wait_empty(hw
, wait_time
);
2574 printk(KERN_ERR
"%s() txwait timeout=%ums "
2575 "Retry:%u/%u\n", __func__
, timeout
,
2576 tx_wait_attempts
- iter
+ 1,
2579 } while (rc
&& --iter
);
2581 rc
= iter
? 0 : -ETIMEDOUT
;
2584 rc
= worker
->wfunc(wt
);
2586 spin_lock_irq(&priv
->tx_lock
);
2587 priv
->inconfig
= false;
2588 if (priv
->pending_tx_pkts
&& priv
->radio_on
)
2589 mwl8k_tx_start(priv
);
2590 spin_unlock_irq(&priv
->tx_lock
);
2591 ieee80211_wake_queues(hw
);
2594 if (worker
->options
& MWL8K_WQ_SLEEP
)
2595 complete(worker
->cmd_wait
);
2597 if (worker
->options
& MWL8K_WQ_FREE_WORKSTRUCT
)
2601 static int mwl8k_queue_work(struct ieee80211_hw
*hw
,
2602 struct mwl8k_work_struct
*worker
,
2603 struct workqueue_struct
*wqueue
,
2604 int (*wfunc
)(struct work_struct
*w
))
2606 unsigned long timeout
= 0;
2609 DECLARE_COMPLETION_ONSTACK(cmd_wait
);
2611 if (!worker
->timeout_ms
)
2612 worker
->timeout_ms
= MWL8K_CONFIG_TIMEOUT_MS
;
2614 if (!worker
->options
)
2615 worker
->options
= MWL8K_WQ_DEFAULT_OPTIONS
;
2617 if (!worker
->txwait_attempts
)
2618 worker
->txwait_attempts
= MWL8K_WQ_TXWAIT_ATTEMPTS
;
2620 if (!worker
->tx_timeout_ms
)
2621 worker
->tx_timeout_ms
= MWL8K_TXWAIT_MS
;
2624 worker
->cmd_wait
= &cmd_wait
;
2626 worker
->wfunc
= wfunc
;
2628 INIT_WORK(&worker
->wt
, mwl8k_config_thread
);
2629 queue_work(wqueue
, &worker
->wt
);
2631 if (worker
->options
& MWL8K_WQ_POST_REQUEST
) {
2634 if (worker
->options
& MWL8K_WQ_SPIN
) {
2635 timeout
= worker
->timeout_ms
;
2636 while (timeout
&& (worker
->rc
> 0)) {
2640 } else if (worker
->options
& MWL8K_WQ_SLEEP
)
2641 timeout
= wait_for_completion_timeout(&cmd_wait
,
2642 msecs_to_jiffies(worker
->timeout_ms
));
2647 cancel_work_sync(&worker
->wt
);
2655 struct mwl8k_start_worker
{
2656 struct mwl8k_work_struct header
;
2659 static int mwl8k_start_wt(struct work_struct
*wt
)
2661 struct mwl8k_start_worker
*worker
= (struct mwl8k_start_worker
*)wt
;
2662 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2663 struct mwl8k_priv
*priv
= hw
->priv
;
2666 if (priv
->vif
!= NULL
) {
2668 goto mwl8k_start_exit
;
2672 if (mwl8k_cmd_802_11_radio_enable(hw
)) {
2674 goto mwl8k_start_exit
;
2677 /* Purge TX/RX HW queues */
2678 if (mwl8k_cmd_set_pre_scan(hw
)) {
2680 goto mwl8k_start_exit
;
2683 if (mwl8k_cmd_set_post_scan(hw
, "\x00\x00\x00\x00\x00\x00")) {
2685 goto mwl8k_start_exit
;
2688 /* Enable firmware rate adaptation */
2689 if (mwl8k_cmd_setrateadaptmode(hw
, 0)) {
2691 goto mwl8k_start_exit
;
2694 /* Disable WMM. WMM gets enabled when stack sends WMM parms */
2695 if (mwl8k_set_wmm(hw
, 0)) {
2697 goto mwl8k_start_exit
;
2700 /* Disable sniffer mode */
2701 if (mwl8k_enable_sniffer(hw
, 0))
2708 static int mwl8k_start(struct ieee80211_hw
*hw
)
2710 struct mwl8k_start_worker
*worker
;
2711 struct mwl8k_priv
*priv
= hw
->priv
;
2714 /* Enable tx reclaim tasklet */
2715 tasklet_enable(&priv
->tx_reclaim_task
);
2717 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
2718 IRQF_SHARED
, MWL8K_NAME
, hw
);
2720 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
2723 goto mwl8k_start_disable_tasklet
;
2726 /* Enable interrupts */
2727 iowrite32(MWL8K_A2H_EVENTS
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2729 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2730 if (worker
== NULL
) {
2732 goto mwl8k_start_disable_irq
;
2735 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2736 priv
->config_wq
, mwl8k_start_wt
);
2741 if (rc
== -ETIMEDOUT
)
2742 printk(KERN_ERR
"%s() timed out\n", __func__
);
2746 mwl8k_start_disable_irq
:
2747 spin_lock_irq(&priv
->tx_lock
);
2748 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2749 spin_unlock_irq(&priv
->tx_lock
);
2750 free_irq(priv
->pdev
->irq
, hw
);
2752 mwl8k_start_disable_tasklet
:
2753 tasklet_disable(&priv
->tx_reclaim_task
);
2758 struct mwl8k_stop_worker
{
2759 struct mwl8k_work_struct header
;
2762 static int mwl8k_stop_wt(struct work_struct
*wt
)
2764 struct mwl8k_stop_worker
*worker
= (struct mwl8k_stop_worker
*)wt
;
2765 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2767 return mwl8k_cmd_802_11_radio_disable(hw
);
2770 static void mwl8k_stop(struct ieee80211_hw
*hw
)
2773 struct mwl8k_stop_worker
*worker
;
2774 struct mwl8k_priv
*priv
= hw
->priv
;
2777 if (priv
->vif
!= NULL
)
2780 ieee80211_stop_queues(hw
);
2782 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2786 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2787 priv
->config_wq
, mwl8k_stop_wt
);
2789 if (rc
== -ETIMEDOUT
)
2790 printk(KERN_ERR
"%s() timed out\n", __func__
);
2792 /* Disable interrupts */
2793 spin_lock_irq(&priv
->tx_lock
);
2794 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
2795 spin_unlock_irq(&priv
->tx_lock
);
2796 free_irq(priv
->pdev
->irq
, hw
);
2798 /* Stop finalize join worker */
2799 cancel_work_sync(&priv
->finalize_join_worker
);
2800 if (priv
->beacon_skb
!= NULL
)
2801 dev_kfree_skb(priv
->beacon_skb
);
2803 /* Stop tx reclaim tasklet */
2804 tasklet_disable(&priv
->tx_reclaim_task
);
2806 /* Stop config thread */
2807 flush_workqueue(priv
->config_wq
);
2809 /* Return all skbs to mac80211 */
2810 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
2811 mwl8k_txq_reclaim(hw
, i
, 1);
2814 static int mwl8k_add_interface(struct ieee80211_hw
*hw
,
2815 struct ieee80211_if_init_conf
*conf
)
2817 struct mwl8k_priv
*priv
= hw
->priv
;
2818 struct mwl8k_vif
*mwl8k_vif
;
2821 * We only support one active interface at a time.
2823 if (priv
->vif
!= NULL
)
2827 * We only support managed interfaces for now.
2829 if (conf
->type
!= NL80211_IFTYPE_STATION
)
2832 /* Clean out driver private area */
2833 mwl8k_vif
= MWL8K_VIF(conf
->vif
);
2834 memset(mwl8k_vif
, 0, sizeof(*mwl8k_vif
));
2836 /* Save the mac address */
2837 memcpy(mwl8k_vif
->mac_addr
, conf
->mac_addr
, ETH_ALEN
);
2839 /* Back pointer to parent config block */
2840 mwl8k_vif
->priv
= priv
;
2842 /* Setup initial PHY parameters */
2843 memcpy(mwl8k_vif
->legacy_rates
,
2844 priv
->rates
, sizeof(mwl8k_vif
->legacy_rates
));
2845 mwl8k_vif
->legacy_nrates
= ARRAY_SIZE(priv
->rates
);
2847 /* Set Initial sequence number to zero */
2848 mwl8k_vif
->seqno
= 0;
2850 priv
->vif
= conf
->vif
;
2851 priv
->current_channel
= NULL
;
2856 static void mwl8k_remove_interface(struct ieee80211_hw
*hw
,
2857 struct ieee80211_if_init_conf
*conf
)
2859 struct mwl8k_priv
*priv
= hw
->priv
;
2861 if (priv
->vif
== NULL
)
2867 struct mwl8k_config_worker
{
2868 struct mwl8k_work_struct header
;
2872 static int mwl8k_config_wt(struct work_struct
*wt
)
2874 struct mwl8k_config_worker
*worker
=
2875 (struct mwl8k_config_worker
*)wt
;
2876 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2877 struct ieee80211_conf
*conf
= &hw
->conf
;
2878 struct mwl8k_priv
*priv
= hw
->priv
;
2881 if (mwl8k_cmd_802_11_radio_enable(hw
)) {
2883 goto mwl8k_config_exit
;
2886 priv
->current_channel
= conf
->channel
;
2888 if (mwl8k_cmd_set_rf_channel(hw
, conf
->channel
)) {
2890 goto mwl8k_config_exit
;
2893 if (conf
->power_level
> 18)
2894 conf
->power_level
= 18;
2895 if (mwl8k_cmd_802_11_rf_tx_power(hw
, conf
->power_level
)) {
2897 goto mwl8k_config_exit
;
2900 if (mwl8k_cmd_mimo_config(hw
, 0x7, 0x7))
2907 static int mwl8k_config(struct ieee80211_hw
*hw
, u32 changed
)
2910 struct mwl8k_config_worker
*worker
;
2911 struct mwl8k_priv
*priv
= hw
->priv
;
2913 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
2917 worker
->changed
= changed
;
2918 rc
= mwl8k_queue_work(hw
, &worker
->header
,
2919 priv
->config_wq
, mwl8k_config_wt
);
2920 if (rc
== -ETIMEDOUT
) {
2921 printk(KERN_ERR
"%s() timed out.\n", __func__
);
2928 * mac80211 will crash on anything other than -EINVAL on
2929 * error. Looks like wireless extensions which calls mac80211
2930 * may be the actual culprit...
2932 return rc
? -EINVAL
: 0;
2935 struct mwl8k_bss_info_changed_worker
{
2936 struct mwl8k_work_struct header
;
2937 struct ieee80211_vif
*vif
;
2938 struct ieee80211_bss_conf
*info
;
2942 static int mwl8k_bss_info_changed_wt(struct work_struct
*wt
)
2944 struct mwl8k_bss_info_changed_worker
*worker
=
2945 (struct mwl8k_bss_info_changed_worker
*)wt
;
2946 struct ieee80211_hw
*hw
= worker
->header
.hw
;
2947 struct ieee80211_vif
*vif
= worker
->vif
;
2948 struct ieee80211_bss_conf
*info
= worker
->info
;
2952 struct mwl8k_priv
*priv
= hw
->priv
;
2953 struct mwl8k_vif
*mwl8k_vif
= MWL8K_VIF(vif
);
2955 changed
= worker
->changed
;
2956 priv
->capture_beacon
= false;
2959 memcpy(&mwl8k_vif
->bss_info
, info
,
2960 sizeof(struct ieee80211_bss_conf
));
2963 if (mwl8k_update_rateset(hw
, vif
))
2964 goto mwl8k_bss_info_changed_exit
;
2966 /* Turn on rate adaptation */
2967 if (mwl8k_cmd_use_fixed_rate(hw
, MWL8K_USE_AUTO_RATE
,
2968 MWL8K_UCAST_RATE
, NULL
))
2969 goto mwl8k_bss_info_changed_exit
;
2971 /* Set radio preamble */
2972 if (mwl8k_set_radio_preamble(hw
, info
->use_short_preamble
))
2973 goto mwl8k_bss_info_changed_exit
;
2976 if (mwl8k_cmd_set_slot(hw
, info
->use_short_slot
))
2977 goto mwl8k_bss_info_changed_exit
;
2979 /* Update peer rate info */
2980 if (mwl8k_cmd_update_sta_db(hw
, vif
,
2981 MWL8K_STA_DB_MODIFY_ENTRY
))
2982 goto mwl8k_bss_info_changed_exit
;
2985 if (mwl8k_cmd_set_aid(hw
, vif
))
2986 goto mwl8k_bss_info_changed_exit
;
2989 * Finalize the join. Tell rx handler to process
2990 * next beacon from our BSSID.
2992 memcpy(priv
->capture_bssid
, mwl8k_vif
->bssid
, ETH_ALEN
);
2993 priv
->capture_beacon
= true;
2995 mwl8k_cmd_update_sta_db(hw
, vif
, MWL8K_STA_DB_DEL_ENTRY
);
2996 memset(&mwl8k_vif
->bss_info
, 0,
2997 sizeof(struct ieee80211_bss_conf
));
2998 memset(mwl8k_vif
->bssid
, 0, ETH_ALEN
);
3001 mwl8k_bss_info_changed_exit
:
3006 static void mwl8k_bss_info_changed(struct ieee80211_hw
*hw
,
3007 struct ieee80211_vif
*vif
,
3008 struct ieee80211_bss_conf
*info
,
3011 struct mwl8k_bss_info_changed_worker
*worker
;
3012 struct mwl8k_priv
*priv
= hw
->priv
;
3013 struct mwl8k_vif
*mv_vif
= MWL8K_VIF(vif
);
3016 if (changed
& BSS_CHANGED_BSSID
)
3017 memcpy(mv_vif
->bssid
, info
->bssid
, ETH_ALEN
);
3019 if ((changed
& BSS_CHANGED_ASSOC
) == 0)
3022 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3027 worker
->info
= info
;
3028 worker
->changed
= changed
;
3029 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3031 mwl8k_bss_info_changed_wt
);
3033 if (rc
== -ETIMEDOUT
)
3034 printk(KERN_ERR
"%s() timed out\n", __func__
);
3037 static u64
mwl8k_prepare_multicast(struct ieee80211_hw
*hw
,
3038 int mc_count
, struct dev_addr_list
*mclist
)
3040 struct mwl8k_cmd_pkt
*cmd
;
3042 cmd
= __mwl8k_cmd_mac_multicast_adr(hw
, mc_count
, mclist
);
3044 return (unsigned long)cmd
;
3047 struct mwl8k_configure_filter_worker
{
3048 struct mwl8k_work_struct header
;
3049 unsigned int changed_flags
;
3050 unsigned int total_flags
;
3051 struct mwl8k_cmd_pkt
*multicast_adr_cmd
;
3054 #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC
3056 static int mwl8k_configure_filter_wt(struct work_struct
*wt
)
3058 struct mwl8k_configure_filter_worker
*worker
=
3059 (struct mwl8k_configure_filter_worker
*)wt
;
3060 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3061 struct mwl8k_priv
*priv
= hw
->priv
;
3064 if (worker
->changed_flags
& FIF_BCN_PRBRESP_PROMISC
) {
3065 if (worker
->total_flags
& FIF_BCN_PRBRESP_PROMISC
)
3066 rc
= mwl8k_cmd_set_pre_scan(hw
);
3070 bssid
= "\x00\x00\x00\x00\x00\x00";
3071 if (priv
->vif
!= NULL
)
3072 bssid
= MWL8K_VIF(priv
->vif
)->bssid
;
3074 rc
= mwl8k_cmd_set_post_scan(hw
, bssid
);
3078 if (!rc
&& worker
->multicast_adr_cmd
!= NULL
)
3079 rc
= mwl8k_post_cmd(hw
, worker
->multicast_adr_cmd
);
3080 kfree(worker
->multicast_adr_cmd
);
3085 static void mwl8k_configure_filter(struct ieee80211_hw
*hw
,
3086 unsigned int changed_flags
,
3087 unsigned int *total_flags
,
3090 struct mwl8k_priv
*priv
= hw
->priv
;
3091 struct mwl8k_configure_filter_worker
*worker
;
3093 /* Clear unsupported feature flags */
3094 *total_flags
&= MWL8K_SUPPORTED_IF_FLAGS
;
3096 if (!(changed_flags
& MWL8K_SUPPORTED_IF_FLAGS
))
3099 worker
= kzalloc(sizeof(*worker
), GFP_ATOMIC
);
3103 worker
->changed_flags
= changed_flags
;
3104 worker
->total_flags
= *total_flags
;
3105 worker
->multicast_adr_cmd
= (void *)(unsigned long)multicast
;
3107 mwl8k_queue_work(hw
, &worker
->header
, priv
->config_wq
,
3108 mwl8k_configure_filter_wt
);
3111 struct mwl8k_set_rts_threshold_worker
{
3112 struct mwl8k_work_struct header
;
3116 static int mwl8k_set_rts_threshold_wt(struct work_struct
*wt
)
3118 struct mwl8k_set_rts_threshold_worker
*worker
=
3119 (struct mwl8k_set_rts_threshold_worker
*)wt
;
3121 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3122 u16 threshold
= (u16
)(worker
->value
);
3125 rc
= mwl8k_rts_threshold(hw
, MWL8K_CMD_SET
, &threshold
);
3130 static int mwl8k_set_rts_threshold(struct ieee80211_hw
*hw
, u32 value
)
3133 struct mwl8k_set_rts_threshold_worker
*worker
;
3134 struct mwl8k_priv
*priv
= hw
->priv
;
3136 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3140 worker
->value
= value
;
3142 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3144 mwl8k_set_rts_threshold_wt
);
3147 if (rc
== -ETIMEDOUT
) {
3148 printk(KERN_ERR
"%s() timed out\n", __func__
);
3155 struct mwl8k_conf_tx_worker
{
3156 struct mwl8k_work_struct header
;
3158 const struct ieee80211_tx_queue_params
*params
;
3161 static int mwl8k_conf_tx_wt(struct work_struct
*wt
)
3163 struct mwl8k_conf_tx_worker
*worker
=
3164 (struct mwl8k_conf_tx_worker
*)wt
;
3166 struct ieee80211_hw
*hw
= worker
->header
.hw
;
3167 u16 queue
= worker
->queue
;
3168 const struct ieee80211_tx_queue_params
*params
= worker
->params
;
3170 struct mwl8k_priv
*priv
= hw
->priv
;
3173 if (!priv
->wmm_enabled
) {
3174 if (mwl8k_set_wmm(hw
, 1)) {
3176 goto mwl8k_conf_tx_exit
;
3180 if (mwl8k_set_edca_params(hw
, GET_TXQ(queue
), params
->cw_min
,
3181 params
->cw_max
, params
->aifs
, params
->txop
))
3187 static int mwl8k_conf_tx(struct ieee80211_hw
*hw
, u16 queue
,
3188 const struct ieee80211_tx_queue_params
*params
)
3191 struct mwl8k_conf_tx_worker
*worker
;
3192 struct mwl8k_priv
*priv
= hw
->priv
;
3194 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3198 worker
->queue
= queue
;
3199 worker
->params
= params
;
3200 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3201 priv
->config_wq
, mwl8k_conf_tx_wt
);
3203 if (rc
== -ETIMEDOUT
) {
3204 printk(KERN_ERR
"%s() timed out\n", __func__
);
3210 static int mwl8k_get_tx_stats(struct ieee80211_hw
*hw
,
3211 struct ieee80211_tx_queue_stats
*stats
)
3213 struct mwl8k_priv
*priv
= hw
->priv
;
3214 struct mwl8k_tx_queue
*txq
;
3217 spin_lock_bh(&priv
->tx_lock
);
3218 for (index
= 0; index
< MWL8K_TX_QUEUES
; index
++) {
3219 txq
= priv
->txq
+ index
;
3220 memcpy(&stats
[index
], &txq
->tx_stats
,
3221 sizeof(struct ieee80211_tx_queue_stats
));
3223 spin_unlock_bh(&priv
->tx_lock
);
3227 struct mwl8k_get_stats_worker
{
3228 struct mwl8k_work_struct header
;
3229 struct ieee80211_low_level_stats
*stats
;
3232 static int mwl8k_get_stats_wt(struct work_struct
*wt
)
3234 struct mwl8k_get_stats_worker
*worker
=
3235 (struct mwl8k_get_stats_worker
*)wt
;
3237 return mwl8k_cmd_802_11_get_stat(worker
->header
.hw
, worker
->stats
);
3240 static int mwl8k_get_stats(struct ieee80211_hw
*hw
,
3241 struct ieee80211_low_level_stats
*stats
)
3244 struct mwl8k_get_stats_worker
*worker
;
3245 struct mwl8k_priv
*priv
= hw
->priv
;
3247 worker
= kzalloc(sizeof(*worker
), GFP_KERNEL
);
3251 worker
->stats
= stats
;
3252 rc
= mwl8k_queue_work(hw
, &worker
->header
,
3253 priv
->config_wq
, mwl8k_get_stats_wt
);
3256 if (rc
== -ETIMEDOUT
) {
3257 printk(KERN_ERR
"%s() timed out\n", __func__
);
3264 static const struct ieee80211_ops mwl8k_ops
= {
3266 .start
= mwl8k_start
,
3268 .add_interface
= mwl8k_add_interface
,
3269 .remove_interface
= mwl8k_remove_interface
,
3270 .config
= mwl8k_config
,
3271 .bss_info_changed
= mwl8k_bss_info_changed
,
3272 .prepare_multicast
= mwl8k_prepare_multicast
,
3273 .configure_filter
= mwl8k_configure_filter
,
3274 .set_rts_threshold
= mwl8k_set_rts_threshold
,
3275 .conf_tx
= mwl8k_conf_tx
,
3276 .get_tx_stats
= mwl8k_get_tx_stats
,
3277 .get_stats
= mwl8k_get_stats
,
3280 static void mwl8k_tx_reclaim_handler(unsigned long data
)
3283 struct ieee80211_hw
*hw
= (struct ieee80211_hw
*) data
;
3284 struct mwl8k_priv
*priv
= hw
->priv
;
3286 spin_lock_bh(&priv
->tx_lock
);
3287 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3288 mwl8k_txq_reclaim(hw
, i
, 0);
3290 if (priv
->tx_wait
!= NULL
&& mwl8k_txq_busy(priv
) == 0) {
3291 complete(priv
->tx_wait
);
3292 priv
->tx_wait
= NULL
;
3294 spin_unlock_bh(&priv
->tx_lock
);
3297 static void mwl8k_finalize_join_worker(struct work_struct
*work
)
3299 struct mwl8k_priv
*priv
=
3300 container_of(work
, struct mwl8k_priv
, finalize_join_worker
);
3301 struct sk_buff
*skb
= priv
->beacon_skb
;
3302 u8 dtim
= MWL8K_VIF(priv
->vif
)->bss_info
.dtim_period
;
3304 mwl8k_finalize_join(priv
->hw
, skb
->data
, skb
->len
, dtim
);
3307 priv
->beacon_skb
= NULL
;
3310 static int __devinit
mwl8k_probe(struct pci_dev
*pdev
,
3311 const struct pci_device_id
*id
)
3313 struct ieee80211_hw
*hw
;
3314 struct mwl8k_priv
*priv
;
3319 rc
= pci_enable_device(pdev
);
3321 printk(KERN_ERR
"%s: Cannot enable new PCI device\n",
3326 rc
= pci_request_regions(pdev
, MWL8K_NAME
);
3328 printk(KERN_ERR
"%s: Cannot obtain PCI resources\n",
3333 pci_set_master(pdev
);
3335 hw
= ieee80211_alloc_hw(sizeof(*priv
), &mwl8k_ops
);
3337 printk(KERN_ERR
"%s: ieee80211 alloc failed\n", MWL8K_NAME
);
3345 priv
->hostcmd_wait
= NULL
;
3346 priv
->tx_wait
= NULL
;
3347 priv
->inconfig
= false;
3348 priv
->wmm_enabled
= false;
3349 priv
->pending_tx_pkts
= 0;
3350 strncpy(priv
->name
, MWL8K_NAME
, sizeof(priv
->name
));
3352 spin_lock_init(&priv
->fw_lock
);
3354 SET_IEEE80211_DEV(hw
, &pdev
->dev
);
3355 pci_set_drvdata(pdev
, hw
);
3357 priv
->regs
= pci_iomap(pdev
, 1, 0x10000);
3358 if (priv
->regs
== NULL
) {
3359 printk(KERN_ERR
"%s: Cannot map device memory\n", priv
->name
);
3363 memcpy(priv
->channels
, mwl8k_channels
, sizeof(mwl8k_channels
));
3364 priv
->band
.band
= IEEE80211_BAND_2GHZ
;
3365 priv
->band
.channels
= priv
->channels
;
3366 priv
->band
.n_channels
= ARRAY_SIZE(mwl8k_channels
);
3367 priv
->band
.bitrates
= priv
->rates
;
3368 priv
->band
.n_bitrates
= ARRAY_SIZE(mwl8k_rates
);
3369 hw
->wiphy
->bands
[IEEE80211_BAND_2GHZ
] = &priv
->band
;
3371 BUILD_BUG_ON(sizeof(priv
->rates
) != sizeof(mwl8k_rates
));
3372 memcpy(priv
->rates
, mwl8k_rates
, sizeof(mwl8k_rates
));
3375 * Extra headroom is the size of the required DMA header
3376 * minus the size of the smallest 802.11 frame (CTS frame).
3378 hw
->extra_tx_headroom
=
3379 sizeof(struct mwl8k_dma_data
) - sizeof(struct ieee80211_cts
);
3381 hw
->channel_change_time
= 10;
3383 hw
->queues
= MWL8K_TX_QUEUES
;
3385 hw
->wiphy
->interface_modes
= BIT(NL80211_IFTYPE_STATION
);
3387 /* Set rssi and noise values to dBm */
3388 hw
->flags
|= IEEE80211_HW_SIGNAL_DBM
| IEEE80211_HW_NOISE_DBM
;
3389 hw
->vif_data_size
= sizeof(struct mwl8k_vif
);
3392 /* Set default radio state and preamble */
3394 priv
->radio_short_preamble
= 0;
3396 /* Finalize join worker */
3397 INIT_WORK(&priv
->finalize_join_worker
, mwl8k_finalize_join_worker
);
3399 /* TX reclaim tasklet */
3400 tasklet_init(&priv
->tx_reclaim_task
,
3401 mwl8k_tx_reclaim_handler
, (unsigned long)hw
);
3402 tasklet_disable(&priv
->tx_reclaim_task
);
3404 /* Config workthread */
3405 priv
->config_wq
= create_singlethread_workqueue("mwl8k_config");
3406 if (priv
->config_wq
== NULL
)
3409 /* Power management cookie */
3410 priv
->cookie
= pci_alloc_consistent(priv
->pdev
, 4, &priv
->cookie_dma
);
3411 if (priv
->cookie
== NULL
)
3414 rc
= mwl8k_rxq_init(hw
, 0);
3417 rxq_refill(hw
, 0, INT_MAX
);
3419 spin_lock_init(&priv
->tx_lock
);
3421 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++) {
3422 rc
= mwl8k_txq_init(hw
, i
);
3424 goto err_free_queues
;
3427 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS
);
3428 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3429 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL
);
3430 iowrite32(0xffffffff, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK
);
3432 rc
= request_irq(priv
->pdev
->irq
, &mwl8k_interrupt
,
3433 IRQF_SHARED
, MWL8K_NAME
, hw
);
3435 printk(KERN_ERR
"%s: failed to register IRQ handler\n",
3437 goto err_free_queues
;
3440 /* Reset firmware and hardware */
3441 mwl8k_hw_reset(priv
);
3443 /* Ask userland hotplug daemon for the device firmware */
3444 rc
= mwl8k_request_firmware(priv
, (u32
)id
->driver_data
);
3446 printk(KERN_ERR
"%s: Firmware files not found\n", priv
->name
);
3450 /* Load firmware into hardware */
3451 rc
= mwl8k_load_firmware(priv
);
3453 printk(KERN_ERR
"%s: Cannot start firmware\n", priv
->name
);
3454 goto err_stop_firmware
;
3457 /* Reclaim memory once firmware is successfully loaded */
3458 mwl8k_release_firmware(priv
);
3461 * Temporarily enable interrupts. Initial firmware host
3462 * commands use interrupts and avoids polling. Disable
3463 * interrupts when done.
3465 iowrite32(MWL8K_A2H_EVENTS
, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3467 /* Get config data, mac addrs etc */
3468 rc
= mwl8k_cmd_get_hw_spec(hw
);
3470 printk(KERN_ERR
"%s: Cannot initialise firmware\n", priv
->name
);
3471 goto err_stop_firmware
;
3474 /* Turn radio off */
3475 rc
= mwl8k_cmd_802_11_radio_disable(hw
);
3477 printk(KERN_ERR
"%s: Cannot disable\n", priv
->name
);
3478 goto err_stop_firmware
;
3481 /* Disable interrupts */
3482 spin_lock_irq(&priv
->tx_lock
);
3483 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3484 spin_unlock_irq(&priv
->tx_lock
);
3485 free_irq(priv
->pdev
->irq
, hw
);
3487 rc
= ieee80211_register_hw(hw
);
3489 printk(KERN_ERR
"%s: Cannot register device\n", priv
->name
);
3490 goto err_stop_firmware
;
3493 fw
= (u8
*)&priv
->fw_rev
;
3494 printk(KERN_INFO
"%s: 88W%u %s\n", priv
->name
, priv
->part_num
,
3496 printk(KERN_INFO
"%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n",
3497 priv
->name
, MWL8K_VERSION
, fw
[3], fw
[2], fw
[1], fw
[0]);
3498 printk(KERN_INFO
"%s: MAC Address: %pM\n", priv
->name
,
3499 hw
->wiphy
->perm_addr
);
3504 mwl8k_hw_reset(priv
);
3505 mwl8k_release_firmware(priv
);
3508 spin_lock_irq(&priv
->tx_lock
);
3509 iowrite32(0, priv
->regs
+ MWL8K_HIU_A2H_INTERRUPT_MASK
);
3510 spin_unlock_irq(&priv
->tx_lock
);
3511 free_irq(priv
->pdev
->irq
, hw
);
3514 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3515 mwl8k_txq_deinit(hw
, i
);
3516 mwl8k_rxq_deinit(hw
, 0);
3519 if (priv
->cookie
!= NULL
)
3520 pci_free_consistent(priv
->pdev
, 4,
3521 priv
->cookie
, priv
->cookie_dma
);
3523 if (priv
->regs
!= NULL
)
3524 pci_iounmap(pdev
, priv
->regs
);
3526 if (priv
->config_wq
!= NULL
)
3527 destroy_workqueue(priv
->config_wq
);
3529 pci_set_drvdata(pdev
, NULL
);
3530 ieee80211_free_hw(hw
);
3533 pci_release_regions(pdev
);
3534 pci_disable_device(pdev
);
3539 static void __devexit
mwl8k_shutdown(struct pci_dev
*pdev
)
3541 printk(KERN_ERR
"===>%s(%u)\n", __func__
, __LINE__
);
3544 static void __devexit
mwl8k_remove(struct pci_dev
*pdev
)
3546 struct ieee80211_hw
*hw
= pci_get_drvdata(pdev
);
3547 struct mwl8k_priv
*priv
;
3554 ieee80211_stop_queues(hw
);
3556 ieee80211_unregister_hw(hw
);
3558 /* Remove tx reclaim tasklet */
3559 tasklet_kill(&priv
->tx_reclaim_task
);
3561 /* Stop config thread */
3562 destroy_workqueue(priv
->config_wq
);
3565 mwl8k_hw_reset(priv
);
3567 /* Return all skbs to mac80211 */
3568 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3569 mwl8k_txq_reclaim(hw
, i
, 1);
3571 for (i
= 0; i
< MWL8K_TX_QUEUES
; i
++)
3572 mwl8k_txq_deinit(hw
, i
);
3574 mwl8k_rxq_deinit(hw
, 0);
3576 pci_free_consistent(priv
->pdev
, 4,
3577 priv
->cookie
, priv
->cookie_dma
);
3579 pci_iounmap(pdev
, priv
->regs
);
3580 pci_set_drvdata(pdev
, NULL
);
3581 ieee80211_free_hw(hw
);
3582 pci_release_regions(pdev
);
3583 pci_disable_device(pdev
);
3586 static struct pci_driver mwl8k_driver
= {
3588 .id_table
= mwl8k_table
,
3589 .probe
= mwl8k_probe
,
3590 .remove
= __devexit_p(mwl8k_remove
),
3591 .shutdown
= __devexit_p(mwl8k_shutdown
),
3594 static int __init
mwl8k_init(void)
3596 return pci_register_driver(&mwl8k_driver
);
3599 static void __exit
mwl8k_exit(void)
3601 pci_unregister_driver(&mwl8k_driver
);
3604 module_init(mwl8k_init
);
3605 module_exit(mwl8k_exit
);