2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
5 * Copyright (C) 2008, 2009, 2010 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/interrupt.h>
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/spinlock.h>
18 #include <linux/list.h>
19 #include <linux/pci.h>
20 #include <linux/delay.h>
21 #include <linux/completion.h>
22 #include <linux/etherdevice.h>
23 #include <linux/slab.h>
24 #include <net/mac80211.h>
25 #include <linux/moduleparam.h>
26 #include <linux/firmware.h>
27 #include <linux/workqueue.h>
29 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
30 #define MWL8K_NAME KBUILD_MODNAME
31 #define MWL8K_VERSION "0.13"
33 /* Module parameters */
34 static bool ap_mode_default;
35 module_param(ap_mode_default, bool, 0);
36 MODULE_PARM_DESC(ap_mode_default,
37 "Set to 1 to make ap mode the default instead of sta mode");
39 /* Register definitions */
40 #define MWL8K_HIU_GEN_PTR 0x00000c10
41 #define MWL8K_MODE_STA 0x0000005a
42 #define MWL8K_MODE_AP 0x000000a5
43 #define MWL8K_HIU_INT_CODE 0x00000c14
44 #define MWL8K_FWSTA_READY 0xf0f1f2f4
45 #define MWL8K_FWAP_READY 0xf1f2f4a5
46 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
47 #define MWL8K_HIU_SCRATCH 0x00000c40
49 /* Host->device communications */
50 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
51 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
52 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
53 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
54 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
55 #define MWL8K_H2A_INT_DUMMY (1 << 20)
56 #define MWL8K_H2A_INT_RESET (1 << 15)
57 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
58 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
60 /* Device->host communications */
61 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
62 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
63 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
64 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
65 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
66 #define MWL8K_A2H_INT_DUMMY (1 << 20)
67 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
68 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
69 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
70 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
71 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
72 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
73 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
74 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
75 #define MWL8K_A2H_INT_RX_READY (1 << 1)
76 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
78 /* HW micro second timer register
79 * located at offset 0xA600. This
80 * will be used to timestamp tx
84 #define MWL8K_HW_TIMER_REGISTER 0x0000a600
86 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
87 MWL8K_A2H_INT_CHNL_SWITCHED | \
88 MWL8K_A2H_INT_QUEUE_EMPTY | \
89 MWL8K_A2H_INT_RADAR_DETECT | \
90 MWL8K_A2H_INT_RADIO_ON | \
91 MWL8K_A2H_INT_RADIO_OFF | \
92 MWL8K_A2H_INT_MAC_EVENT | \
93 MWL8K_A2H_INT_OPC_DONE | \
94 MWL8K_A2H_INT_RX_READY | \
95 MWL8K_A2H_INT_TX_DONE | \
96 MWL8K_A2H_INT_BA_WATCHDOG)
98 #define MWL8K_RX_QUEUES 1
99 #define MWL8K_TX_WMM_QUEUES 4
100 #define MWL8K_MAX_AMPDU_QUEUES 8
101 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
102 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
106 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
107 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
108 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
109 __le16 *qos, s8 *noise);
112 struct mwl8k_device_info {
117 struct rxd_ops *ap_rxd_ops;
121 struct mwl8k_rx_queue {
124 /* hw receives here */
127 /* refill descs here */
134 DEFINE_DMA_UNMAP_ADDR(dma);
138 struct mwl8k_tx_queue {
139 /* hw transmits here */
142 /* sw appends here */
146 struct mwl8k_tx_desc *txd;
148 struct sk_buff **skb;
154 AMPDU_STREAM_IN_PROGRESS,
158 struct mwl8k_ampdu_stream {
159 struct ieee80211_sta *sta;
166 struct ieee80211_hw *hw;
167 struct pci_dev *pdev;
170 struct mwl8k_device_info *device_info;
176 const struct firmware *fw_helper;
177 const struct firmware *fw_ucode;
179 /* hardware/firmware parameters */
181 struct rxd_ops *rxd_ops;
182 struct ieee80211_supported_band band_24;
183 struct ieee80211_channel channels_24[14];
184 struct ieee80211_rate rates_24[14];
185 struct ieee80211_supported_band band_50;
186 struct ieee80211_channel channels_50[4];
187 struct ieee80211_rate rates_50[9];
188 u32 ap_macids_supported;
189 u32 sta_macids_supported;
191 /* Ampdu stream information */
193 spinlock_t stream_lock;
194 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
195 struct work_struct watchdog_ba_handle;
197 /* firmware access */
198 struct mutex fw_mutex;
199 struct task_struct *fw_mutex_owner;
200 struct task_struct *hw_restart_owner;
202 struct completion *hostcmd_wait;
204 /* lock held over TX and TX reap */
207 /* TX quiesce completion, protected by fw_mutex and tx_lock */
208 struct completion *tx_wait;
210 /* List of interfaces. */
212 struct list_head vif_list;
214 /* power management status cookie from firmware */
216 dma_addr_t cookie_dma;
223 * Running count of TX packets in flight, to avoid
224 * iterating over the transmit rings each time.
228 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
229 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
230 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
233 bool radio_short_preamble;
234 bool sniffer_enabled;
237 /* XXX need to convert this to handle multiple interfaces */
239 u8 capture_bssid[ETH_ALEN];
240 struct sk_buff *beacon_skb;
243 * This FJ worker has to be global as it is scheduled from the
244 * RX handler. At this point we don't know which interface it
245 * belongs to until the list of bssids waiting to complete join
248 struct work_struct finalize_join_worker;
250 /* Tasklet to perform TX reclaim. */
251 struct tasklet_struct poll_tx_task;
253 /* Tasklet to perform RX. */
254 struct tasklet_struct poll_rx_task;
256 /* Most recently reported noise in dBm */
260 * preserve the queue configurations so they can be restored if/when
261 * the firmware image is swapped.
263 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
265 /* To perform the task of reloading the firmware */
266 struct work_struct fw_reload;
267 bool hw_restart_in_progress;
269 /* async firmware loading state */
273 struct completion firmware_loading_complete;
276 #define MAX_WEP_KEY_LEN 13
277 #define NUM_WEP_KEYS 4
279 /* Per interface specific private data */
281 struct list_head list;
282 struct ieee80211_vif *vif;
284 /* Firmware macid for this vif. */
287 /* Non AMPDU sequence number assigned by driver. */
293 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
294 } wep_key_conf[NUM_WEP_KEYS];
299 /* A flag to indicate is HW crypto is enabled for this bssid */
300 bool is_hw_crypto_enabled;
302 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
303 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
305 struct tx_traffic_info {
310 #define MWL8K_MAX_TID 8
312 /* Index into station database. Returned by UPDATE_STADB. */
315 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
317 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
319 static const struct ieee80211_channel mwl8k_channels_24[] = {
320 { .center_freq = 2412, .hw_value = 1, },
321 { .center_freq = 2417, .hw_value = 2, },
322 { .center_freq = 2422, .hw_value = 3, },
323 { .center_freq = 2427, .hw_value = 4, },
324 { .center_freq = 2432, .hw_value = 5, },
325 { .center_freq = 2437, .hw_value = 6, },
326 { .center_freq = 2442, .hw_value = 7, },
327 { .center_freq = 2447, .hw_value = 8, },
328 { .center_freq = 2452, .hw_value = 9, },
329 { .center_freq = 2457, .hw_value = 10, },
330 { .center_freq = 2462, .hw_value = 11, },
331 { .center_freq = 2467, .hw_value = 12, },
332 { .center_freq = 2472, .hw_value = 13, },
333 { .center_freq = 2484, .hw_value = 14, },
336 static const struct ieee80211_rate mwl8k_rates_24[] = {
337 { .bitrate = 10, .hw_value = 2, },
338 { .bitrate = 20, .hw_value = 4, },
339 { .bitrate = 55, .hw_value = 11, },
340 { .bitrate = 110, .hw_value = 22, },
341 { .bitrate = 220, .hw_value = 44, },
342 { .bitrate = 60, .hw_value = 12, },
343 { .bitrate = 90, .hw_value = 18, },
344 { .bitrate = 120, .hw_value = 24, },
345 { .bitrate = 180, .hw_value = 36, },
346 { .bitrate = 240, .hw_value = 48, },
347 { .bitrate = 360, .hw_value = 72, },
348 { .bitrate = 480, .hw_value = 96, },
349 { .bitrate = 540, .hw_value = 108, },
350 { .bitrate = 720, .hw_value = 144, },
353 static const struct ieee80211_channel mwl8k_channels_50[] = {
354 { .center_freq = 5180, .hw_value = 36, },
355 { .center_freq = 5200, .hw_value = 40, },
356 { .center_freq = 5220, .hw_value = 44, },
357 { .center_freq = 5240, .hw_value = 48, },
360 static const struct ieee80211_rate mwl8k_rates_50[] = {
361 { .bitrate = 60, .hw_value = 12, },
362 { .bitrate = 90, .hw_value = 18, },
363 { .bitrate = 120, .hw_value = 24, },
364 { .bitrate = 180, .hw_value = 36, },
365 { .bitrate = 240, .hw_value = 48, },
366 { .bitrate = 360, .hw_value = 72, },
367 { .bitrate = 480, .hw_value = 96, },
368 { .bitrate = 540, .hw_value = 108, },
369 { .bitrate = 720, .hw_value = 144, },
372 /* Set or get info from Firmware */
373 #define MWL8K_CMD_GET 0x0000
374 #define MWL8K_CMD_SET 0x0001
375 #define MWL8K_CMD_SET_LIST 0x0002
377 /* Firmware command codes */
378 #define MWL8K_CMD_CODE_DNLD 0x0001
379 #define MWL8K_CMD_GET_HW_SPEC 0x0003
380 #define MWL8K_CMD_SET_HW_SPEC 0x0004
381 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
382 #define MWL8K_CMD_GET_STAT 0x0014
383 #define MWL8K_CMD_RADIO_CONTROL 0x001c
384 #define MWL8K_CMD_RF_TX_POWER 0x001e
385 #define MWL8K_CMD_TX_POWER 0x001f
386 #define MWL8K_CMD_RF_ANTENNA 0x0020
387 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
388 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
389 #define MWL8K_CMD_SET_POST_SCAN 0x0108
390 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
391 #define MWL8K_CMD_SET_AID 0x010d
392 #define MWL8K_CMD_SET_RATE 0x0110
393 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
394 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
395 #define MWL8K_CMD_SET_SLOT 0x0114
396 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
397 #define MWL8K_CMD_SET_WMM_MODE 0x0123
398 #define MWL8K_CMD_MIMO_CONFIG 0x0125
399 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
400 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
401 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
402 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
403 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
404 #define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
405 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
406 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
407 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
408 #define MWL8K_CMD_UPDATE_STADB 0x1123
409 #define MWL8K_CMD_BASTREAM 0x1125
411 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
413 u16 command = le16_to_cpu(cmd);
415 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
416 snprintf(buf, bufsize, "%s", #x);\
419 switch (command & ~0x8000) {
420 MWL8K_CMDNAME(CODE_DNLD);
421 MWL8K_CMDNAME(GET_HW_SPEC);
422 MWL8K_CMDNAME(SET_HW_SPEC);
423 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
424 MWL8K_CMDNAME(GET_STAT);
425 MWL8K_CMDNAME(RADIO_CONTROL);
426 MWL8K_CMDNAME(RF_TX_POWER);
427 MWL8K_CMDNAME(TX_POWER);
428 MWL8K_CMDNAME(RF_ANTENNA);
429 MWL8K_CMDNAME(SET_BEACON);
430 MWL8K_CMDNAME(SET_PRE_SCAN);
431 MWL8K_CMDNAME(SET_POST_SCAN);
432 MWL8K_CMDNAME(SET_RF_CHANNEL);
433 MWL8K_CMDNAME(SET_AID);
434 MWL8K_CMDNAME(SET_RATE);
435 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
436 MWL8K_CMDNAME(RTS_THRESHOLD);
437 MWL8K_CMDNAME(SET_SLOT);
438 MWL8K_CMDNAME(SET_EDCA_PARAMS);
439 MWL8K_CMDNAME(SET_WMM_MODE);
440 MWL8K_CMDNAME(MIMO_CONFIG);
441 MWL8K_CMDNAME(USE_FIXED_RATE);
442 MWL8K_CMDNAME(ENABLE_SNIFFER);
443 MWL8K_CMDNAME(SET_MAC_ADDR);
444 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
445 MWL8K_CMDNAME(BSS_START);
446 MWL8K_CMDNAME(SET_NEW_STN);
447 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
448 MWL8K_CMDNAME(UPDATE_STADB);
449 MWL8K_CMDNAME(BASTREAM);
450 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
452 snprintf(buf, bufsize, "0x%x", cmd);
459 /* Hardware and firmware reset */
460 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
462 iowrite32(MWL8K_H2A_INT_RESET,
463 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
464 iowrite32(MWL8K_H2A_INT_RESET,
465 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
469 /* Release fw image */
470 static void mwl8k_release_fw(const struct firmware **fw)
474 release_firmware(*fw);
478 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
480 mwl8k_release_fw(&priv->fw_ucode);
481 mwl8k_release_fw(&priv->fw_helper);
484 /* states for asynchronous f/w loading */
485 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
488 FW_STATE_LOADING_PREF,
489 FW_STATE_LOADING_ALT,
493 /* Request fw image */
494 static int mwl8k_request_fw(struct mwl8k_priv *priv,
495 const char *fname, const struct firmware **fw,
498 /* release current image */
500 mwl8k_release_fw(fw);
503 return request_firmware_nowait(THIS_MODULE, 1, fname,
504 &priv->pdev->dev, GFP_KERNEL,
505 priv, mwl8k_fw_state_machine);
507 return request_firmware(fw, fname, &priv->pdev->dev);
510 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
513 struct mwl8k_device_info *di = priv->device_info;
516 if (di->helper_image != NULL) {
518 rc = mwl8k_request_fw(priv, di->helper_image,
519 &priv->fw_helper, true);
521 rc = mwl8k_request_fw(priv, di->helper_image,
522 &priv->fw_helper, false);
524 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
525 pci_name(priv->pdev), di->helper_image);
533 * if we get here, no helper image is needed. Skip the
534 * FW_STATE_INIT state.
536 priv->fw_state = FW_STATE_LOADING_PREF;
537 rc = mwl8k_request_fw(priv, fw_image,
541 rc = mwl8k_request_fw(priv, fw_image,
542 &priv->fw_ucode, false);
544 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
545 pci_name(priv->pdev), fw_image);
546 mwl8k_release_fw(&priv->fw_helper);
553 struct mwl8k_cmd_pkt {
566 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
568 void __iomem *regs = priv->regs;
572 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
573 if (pci_dma_mapping_error(priv->pdev, dma_addr))
576 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
577 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
578 iowrite32(MWL8K_H2A_INT_DOORBELL,
579 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
580 iowrite32(MWL8K_H2A_INT_DUMMY,
581 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
587 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
588 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
589 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
597 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
599 return loops ? 0 : -ETIMEDOUT;
602 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
603 const u8 *data, size_t length)
605 struct mwl8k_cmd_pkt *cmd;
609 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
613 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
620 int block_size = length > 256 ? 256 : length;
622 memcpy(cmd->payload, data + done, block_size);
623 cmd->length = cpu_to_le16(block_size);
625 rc = mwl8k_send_fw_load_cmd(priv, cmd,
626 sizeof(*cmd) + block_size);
631 length -= block_size;
636 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
644 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
645 const u8 *data, size_t length)
647 unsigned char *buffer;
648 int may_continue, rc = 0;
649 u32 done, prev_block_size;
651 buffer = kmalloc(1024, GFP_KERNEL);
658 while (may_continue > 0) {
661 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
662 if (block_size & 1) {
666 done += prev_block_size;
667 length -= prev_block_size;
670 if (block_size > 1024 || block_size > length) {
680 if (block_size == 0) {
687 prev_block_size = block_size;
688 memcpy(buffer, data + done, block_size);
690 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
695 if (!rc && length != 0)
703 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
705 struct mwl8k_priv *priv = hw->priv;
706 const struct firmware *fw = priv->fw_ucode;
710 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) {
711 const struct firmware *helper = priv->fw_helper;
713 if (helper == NULL) {
714 printk(KERN_ERR "%s: helper image needed but none "
715 "given\n", pci_name(priv->pdev));
719 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
721 printk(KERN_ERR "%s: unable to load firmware "
722 "helper image\n", pci_name(priv->pdev));
727 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
729 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
733 printk(KERN_ERR "%s: unable to load firmware image\n",
734 pci_name(priv->pdev));
738 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
744 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
745 if (ready_code == MWL8K_FWAP_READY) {
748 } else if (ready_code == MWL8K_FWSTA_READY) {
757 return loops ? 0 : -ETIMEDOUT;
761 /* DMA header used by firmware and hardware. */
762 struct mwl8k_dma_data {
764 struct ieee80211_hdr wh;
768 /* Routines to add/remove DMA header from skb. */
769 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
771 struct mwl8k_dma_data *tr;
774 tr = (struct mwl8k_dma_data *)skb->data;
775 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
777 if (hdrlen != sizeof(tr->wh)) {
778 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
779 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
780 *((__le16 *)(tr->data - 2)) = qos;
782 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
786 if (hdrlen != sizeof(*tr))
787 skb_pull(skb, sizeof(*tr) - hdrlen);
790 #define REDUCED_TX_HEADROOM 8
793 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
794 int head_pad, int tail_pad)
796 struct ieee80211_hdr *wh;
799 struct mwl8k_dma_data *tr;
802 * Add a firmware DMA header; the firmware requires that we
803 * present a 2-byte payload length followed by a 4-address
804 * header (without QoS field), followed (optionally) by any
805 * WEP/ExtIV header (but only filled in for CCMP).
807 wh = (struct ieee80211_hdr *)skb->data;
809 hdrlen = ieee80211_hdrlen(wh->frame_control);
812 * Check if skb_resize is required because of
813 * tx_headroom adjustment.
815 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
816 + REDUCED_TX_HEADROOM))) {
817 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
819 wiphy_err(priv->hw->wiphy,
820 "Failed to reallocate TX buffer\n");
823 skb->truesize += REDUCED_TX_HEADROOM;
826 reqd_hdrlen = sizeof(*tr) + head_pad;
828 if (hdrlen != reqd_hdrlen)
829 skb_push(skb, reqd_hdrlen - hdrlen);
831 if (ieee80211_is_data_qos(wh->frame_control))
832 hdrlen -= IEEE80211_QOS_CTL_LEN;
834 tr = (struct mwl8k_dma_data *)skb->data;
836 memmove(&tr->wh, wh, hdrlen);
837 if (hdrlen != sizeof(tr->wh))
838 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
841 * Firmware length is the length of the fully formed "802.11
842 * payload". That is, everything except for the 802.11 header.
843 * This includes all crypto material including the MIC.
845 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
848 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
851 struct ieee80211_hdr *wh;
852 struct ieee80211_tx_info *tx_info;
853 struct ieee80211_key_conf *key_conf;
857 wh = (struct ieee80211_hdr *)skb->data;
859 tx_info = IEEE80211_SKB_CB(skb);
862 if (ieee80211_is_data(wh->frame_control))
863 key_conf = tx_info->control.hw_key;
866 * Make sure the packet header is in the DMA header format (4-address
867 * without QoS), and add head & tail padding when HW crypto is enabled.
869 * We have the following trailer padding requirements:
870 * - WEP: 4 trailer bytes (ICV)
871 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
872 * - CCMP: 8 trailer bytes (MIC)
875 if (key_conf != NULL) {
876 head_pad = key_conf->iv_len;
877 switch (key_conf->cipher) {
878 case WLAN_CIPHER_SUITE_WEP40:
879 case WLAN_CIPHER_SUITE_WEP104:
882 case WLAN_CIPHER_SUITE_TKIP:
885 case WLAN_CIPHER_SUITE_CCMP:
890 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
894 * Packet reception for 88w8366 AP firmware.
896 struct mwl8k_rxd_8366_ap {
900 __le32 pkt_phys_addr;
901 __le32 next_rxd_phys_addr;
905 __le32 hw_noise_floor_info;
914 #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80
915 #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40
916 #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
918 #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80
920 /* 8366 AP rx_status bits */
921 #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
922 #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
923 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
924 #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
925 #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
927 static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr)
929 struct mwl8k_rxd_8366_ap *rxd = _rxd;
931 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
932 rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST;
935 static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len)
937 struct mwl8k_rxd_8366_ap *rxd = _rxd;
939 rxd->pkt_len = cpu_to_le16(len);
940 rxd->pkt_phys_addr = cpu_to_le32(addr);
946 mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status,
947 __le16 *qos, s8 *noise)
949 struct mwl8k_rxd_8366_ap *rxd = _rxd;
951 if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST))
955 memset(status, 0, sizeof(*status));
957 status->signal = -rxd->rssi;
958 *noise = -rxd->noise_floor;
960 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) {
961 status->flag |= RX_FLAG_HT;
962 if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ)
963 status->flag |= RX_FLAG_40MHZ;
964 status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate);
968 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
969 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
970 status->rate_idx = i;
976 if (rxd->channel > 14) {
977 status->band = IEEE80211_BAND_5GHZ;
978 if (!(status->flag & RX_FLAG_HT))
979 status->rate_idx -= 5;
981 status->band = IEEE80211_BAND_2GHZ;
983 status->freq = ieee80211_channel_to_frequency(rxd->channel,
986 *qos = rxd->qos_control;
988 if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
989 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) &&
990 (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
991 status->flag |= RX_FLAG_MMIC_ERROR;
993 return le16_to_cpu(rxd->pkt_len);
996 static struct rxd_ops rxd_8366_ap_ops = {
997 .rxd_size = sizeof(struct mwl8k_rxd_8366_ap),
998 .rxd_init = mwl8k_rxd_8366_ap_init,
999 .rxd_refill = mwl8k_rxd_8366_ap_refill,
1000 .rxd_process = mwl8k_rxd_8366_ap_process,
1004 * Packet reception for STA firmware.
1006 struct mwl8k_rxd_sta {
1010 __le32 pkt_phys_addr;
1011 __le32 next_rxd_phys_addr;
1023 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1024 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1025 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1026 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1027 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1028 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1030 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1031 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1032 /* ICV=0 or MIC=1 */
1033 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1034 /* Key is uploaded only in failure case */
1035 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1037 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1039 struct mwl8k_rxd_sta *rxd = _rxd;
1041 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1042 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1045 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1047 struct mwl8k_rxd_sta *rxd = _rxd;
1049 rxd->pkt_len = cpu_to_le16(len);
1050 rxd->pkt_phys_addr = cpu_to_le32(addr);
1056 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1057 __le16 *qos, s8 *noise)
1059 struct mwl8k_rxd_sta *rxd = _rxd;
1062 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1066 rate_info = le16_to_cpu(rxd->rate_info);
1068 memset(status, 0, sizeof(*status));
1070 status->signal = -rxd->rssi;
1071 *noise = -rxd->noise_level;
1072 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1073 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1075 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1076 status->flag |= RX_FLAG_SHORTPRE;
1077 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1078 status->flag |= RX_FLAG_40MHZ;
1079 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1080 status->flag |= RX_FLAG_SHORT_GI;
1081 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1082 status->flag |= RX_FLAG_HT;
1084 if (rxd->channel > 14) {
1085 status->band = IEEE80211_BAND_5GHZ;
1086 if (!(status->flag & RX_FLAG_HT))
1087 status->rate_idx -= 5;
1089 status->band = IEEE80211_BAND_2GHZ;
1091 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1094 *qos = rxd->qos_control;
1095 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1096 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1097 status->flag |= RX_FLAG_MMIC_ERROR;
1099 return le16_to_cpu(rxd->pkt_len);
1102 static struct rxd_ops rxd_sta_ops = {
1103 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1104 .rxd_init = mwl8k_rxd_sta_init,
1105 .rxd_refill = mwl8k_rxd_sta_refill,
1106 .rxd_process = mwl8k_rxd_sta_process,
1110 #define MWL8K_RX_DESCS 256
1111 #define MWL8K_RX_MAXSZ 3800
1113 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1115 struct mwl8k_priv *priv = hw->priv;
1116 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1124 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1126 rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1127 if (rxq->rxd == NULL) {
1128 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1131 memset(rxq->rxd, 0, size);
1133 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1134 if (rxq->buf == NULL) {
1135 wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n");
1136 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1140 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1144 dma_addr_t next_dma_addr;
1146 desc_size = priv->rxd_ops->rxd_size;
1147 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1150 if (nexti == MWL8K_RX_DESCS)
1152 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1154 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1160 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1162 struct mwl8k_priv *priv = hw->priv;
1163 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1167 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1168 struct sk_buff *skb;
1173 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1177 addr = pci_map_single(priv->pdev, skb->data,
1178 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1182 if (rxq->tail == MWL8K_RX_DESCS)
1184 rxq->buf[rx].skb = skb;
1185 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1187 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1188 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1196 /* Must be called only when the card's reception is completely halted */
1197 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1199 struct mwl8k_priv *priv = hw->priv;
1200 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1203 if (rxq->rxd == NULL)
1206 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1207 if (rxq->buf[i].skb != NULL) {
1208 pci_unmap_single(priv->pdev,
1209 dma_unmap_addr(&rxq->buf[i], dma),
1210 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1211 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1213 kfree_skb(rxq->buf[i].skb);
1214 rxq->buf[i].skb = NULL;
1221 pci_free_consistent(priv->pdev,
1222 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1223 rxq->rxd, rxq->rxd_dma);
1229 * Scan a list of BSSIDs to process for finalize join.
1230 * Allows for extension to process multiple BSSIDs.
1233 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1235 return priv->capture_beacon &&
1236 ieee80211_is_beacon(wh->frame_control) &&
1237 ether_addr_equal(wh->addr3, priv->capture_bssid);
1240 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1241 struct sk_buff *skb)
1243 struct mwl8k_priv *priv = hw->priv;
1245 priv->capture_beacon = false;
1246 memset(priv->capture_bssid, 0, ETH_ALEN);
1249 * Use GFP_ATOMIC as rxq_process is called from
1250 * the primary interrupt handler, memory allocation call
1253 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1254 if (priv->beacon_skb != NULL)
1255 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1258 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1261 struct mwl8k_vif *mwl8k_vif;
1263 list_for_each_entry(mwl8k_vif,
1265 if (memcmp(bssid, mwl8k_vif->bssid,
1273 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1275 struct mwl8k_priv *priv = hw->priv;
1276 struct mwl8k_vif *mwl8k_vif = NULL;
1277 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1281 while (rxq->rxd_count && limit--) {
1282 struct sk_buff *skb;
1285 struct ieee80211_rx_status status;
1286 struct ieee80211_hdr *wh;
1289 skb = rxq->buf[rxq->head].skb;
1293 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1295 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1300 rxq->buf[rxq->head].skb = NULL;
1302 pci_unmap_single(priv->pdev,
1303 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1304 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1305 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1308 if (rxq->head == MWL8K_RX_DESCS)
1313 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1316 * Check for a pending join operation. Save a
1317 * copy of the beacon and schedule a tasklet to
1318 * send a FINALIZE_JOIN command to the firmware.
1320 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1321 mwl8k_save_beacon(hw, skb);
1323 if (ieee80211_has_protected(wh->frame_control)) {
1325 /* Check if hw crypto has been enabled for
1326 * this bss. If yes, set the status flags
1329 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1332 if (mwl8k_vif != NULL &&
1333 mwl8k_vif->is_hw_crypto_enabled) {
1335 * When MMIC ERROR is encountered
1336 * by the firmware, payload is
1337 * dropped and only 32 bytes of
1338 * mwl8k Firmware header is sent
1341 * We need to add four bytes of
1342 * key information. In it
1343 * MAC80211 expects keyidx set to
1344 * 0 for triggering Counter
1345 * Measure of MMIC failure.
1347 if (status.flag & RX_FLAG_MMIC_ERROR) {
1348 struct mwl8k_dma_data *tr;
1349 tr = (struct mwl8k_dma_data *)skb->data;
1350 memset((void *)&(tr->data), 0, 4);
1354 if (!ieee80211_is_auth(wh->frame_control))
1355 status.flag |= RX_FLAG_IV_STRIPPED |
1357 RX_FLAG_MMIC_STRIPPED;
1361 skb_put(skb, pkt_len);
1362 mwl8k_remove_dma_header(skb, qos);
1363 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1364 ieee80211_rx_irqsafe(hw, skb);
1374 * Packet transmission.
1377 #define MWL8K_TXD_STATUS_OK 0x00000001
1378 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1379 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1380 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1381 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1383 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1384 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1385 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1386 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1387 #define MWL8K_QOS_EOSP 0x0010
1389 struct mwl8k_tx_desc {
1394 __le32 pkt_phys_addr;
1396 __u8 dest_MAC_addr[ETH_ALEN];
1397 __le32 next_txd_phys_addr;
1404 #define MWL8K_TX_DESCS 128
1406 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1408 struct mwl8k_priv *priv = hw->priv;
1409 struct mwl8k_tx_queue *txq = priv->txq + index;
1417 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1419 txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma);
1420 if (txq->txd == NULL) {
1421 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1424 memset(txq->txd, 0, size);
1426 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1427 if (txq->skb == NULL) {
1428 wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n");
1429 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1433 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1434 struct mwl8k_tx_desc *tx_desc;
1437 tx_desc = txq->txd + i;
1438 nexti = (i + 1) % MWL8K_TX_DESCS;
1440 tx_desc->status = 0;
1441 tx_desc->next_txd_phys_addr =
1442 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1448 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1450 iowrite32(MWL8K_H2A_INT_PPA_READY,
1451 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1452 iowrite32(MWL8K_H2A_INT_DUMMY,
1453 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1454 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1457 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1459 struct mwl8k_priv *priv = hw->priv;
1462 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1463 struct mwl8k_tx_queue *txq = priv->txq + i;
1469 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1470 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1473 status = le32_to_cpu(tx_desc->status);
1474 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1479 if (tx_desc->pkt_len == 0)
1483 wiphy_err(hw->wiphy,
1484 "txq[%d] len=%d head=%d tail=%d "
1485 "fw_owned=%d drv_owned=%d unused=%d\n",
1487 txq->len, txq->head, txq->tail,
1488 fw_owned, drv_owned, unused);
1493 * Must be called with priv->fw_mutex held and tx queues stopped.
1495 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1497 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1499 struct mwl8k_priv *priv = hw->priv;
1500 DECLARE_COMPLETION_ONSTACK(tx_wait);
1506 /* Since fw restart is in progress, allow only the firmware
1507 * commands from the restart code and block the other
1508 * commands since they are going to fail in any case since
1509 * the firmware has crashed
1511 if (priv->hw_restart_in_progress) {
1512 if (priv->hw_restart_owner == current)
1519 * The TX queues are stopped at this point, so this test
1520 * doesn't need to take ->tx_lock.
1522 if (!priv->pending_tx_pkts)
1528 spin_lock_bh(&priv->tx_lock);
1529 priv->tx_wait = &tx_wait;
1532 unsigned long timeout;
1534 oldcount = priv->pending_tx_pkts;
1536 spin_unlock_bh(&priv->tx_lock);
1537 timeout = wait_for_completion_timeout(&tx_wait,
1538 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1539 spin_lock_bh(&priv->tx_lock);
1542 WARN_ON(priv->pending_tx_pkts);
1544 wiphy_notice(hw->wiphy, "tx rings drained\n");
1548 if (priv->pending_tx_pkts < oldcount) {
1549 wiphy_notice(hw->wiphy,
1550 "waiting for tx rings to drain (%d -> %d pkts)\n",
1551 oldcount, priv->pending_tx_pkts);
1556 priv->tx_wait = NULL;
1558 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1559 MWL8K_TX_WAIT_TIMEOUT_MS);
1560 mwl8k_dump_tx_rings(hw);
1561 priv->hw_restart_in_progress = true;
1562 ieee80211_queue_work(hw, &priv->fw_reload);
1566 spin_unlock_bh(&priv->tx_lock);
1571 #define MWL8K_TXD_SUCCESS(status) \
1572 ((status) & (MWL8K_TXD_STATUS_OK | \
1573 MWL8K_TXD_STATUS_OK_RETRY | \
1574 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1576 static int mwl8k_tid_queue_mapping(u8 tid)
1583 return IEEE80211_AC_BE;
1587 return IEEE80211_AC_BK;
1591 return IEEE80211_AC_VI;
1595 return IEEE80211_AC_VO;
1603 /* The firmware will fill in the rate information
1604 * for each packet that gets queued in the hardware
1605 * and these macros will interpret that info.
1608 #define RI_FORMAT(a) (a & 0x0001)
1609 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1612 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1614 struct mwl8k_priv *priv = hw->priv;
1615 struct mwl8k_tx_queue *txq = priv->txq + index;
1619 while (txq->len > 0 && limit--) {
1621 struct mwl8k_tx_desc *tx_desc;
1624 struct sk_buff *skb;
1625 struct ieee80211_tx_info *info;
1627 struct ieee80211_sta *sta;
1628 struct mwl8k_sta *sta_info = NULL;
1630 struct ieee80211_hdr *wh;
1633 tx_desc = txq->txd + tx;
1635 status = le32_to_cpu(tx_desc->status);
1637 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1641 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1644 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1645 BUG_ON(txq->len == 0);
1647 priv->pending_tx_pkts--;
1649 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1650 size = le16_to_cpu(tx_desc->pkt_len);
1652 txq->skb[tx] = NULL;
1654 BUG_ON(skb == NULL);
1655 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1657 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1659 wh = (struct ieee80211_hdr *) skb->data;
1661 /* Mark descriptor as unused */
1662 tx_desc->pkt_phys_addr = 0;
1663 tx_desc->pkt_len = 0;
1665 info = IEEE80211_SKB_CB(skb);
1666 if (ieee80211_is_data(wh->frame_control)) {
1668 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1671 sta_info = MWL8K_STA(sta);
1672 BUG_ON(sta_info == NULL);
1673 rate_info = le16_to_cpu(tx_desc->rate_info);
1674 /* If rate is < 6.5 Mpbs for an ht station
1675 * do not form an ampdu. If the station is a
1676 * legacy station (format = 0), do not form an
1679 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1680 RI_FORMAT(rate_info) == 0) {
1681 sta_info->is_ampdu_allowed = false;
1683 sta_info->is_ampdu_allowed = true;
1689 ieee80211_tx_info_clear_status(info);
1691 /* Rate control is happening in the firmware.
1692 * Ensure no tx rate is being reported.
1694 info->status.rates[0].idx = -1;
1695 info->status.rates[0].count = 1;
1697 if (MWL8K_TXD_SUCCESS(status))
1698 info->flags |= IEEE80211_TX_STAT_ACK;
1700 ieee80211_tx_status_irqsafe(hw, skb);
1708 /* must be called only when the card's transmit is completely halted */
1709 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1711 struct mwl8k_priv *priv = hw->priv;
1712 struct mwl8k_tx_queue *txq = priv->txq + index;
1714 if (txq->txd == NULL)
1717 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1722 pci_free_consistent(priv->pdev,
1723 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1724 txq->txd, txq->txd_dma);
1728 /* caller must hold priv->stream_lock when calling the stream functions */
1729 static struct mwl8k_ampdu_stream *
1730 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1732 struct mwl8k_ampdu_stream *stream;
1733 struct mwl8k_priv *priv = hw->priv;
1736 for (i = 0; i < priv->num_ampdu_queues; i++) {
1737 stream = &priv->ampdu[i];
1738 if (stream->state == AMPDU_NO_STREAM) {
1740 stream->state = AMPDU_STREAM_NEW;
1743 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1752 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1756 /* if the stream has already been started, don't start it again */
1757 if (stream->state != AMPDU_STREAM_NEW)
1759 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1761 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1762 "%d\n", stream->sta->addr, stream->tid, ret);
1764 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1765 stream->sta->addr, stream->tid);
1770 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1772 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1774 memset(stream, 0, sizeof(*stream));
1777 static struct mwl8k_ampdu_stream *
1778 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1780 struct mwl8k_priv *priv = hw->priv;
1783 for (i = 0 ; i < priv->num_ampdu_queues; i++) {
1784 struct mwl8k_ampdu_stream *stream;
1785 stream = &priv->ampdu[i];
1786 if (stream->state == AMPDU_NO_STREAM)
1788 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1795 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1796 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1798 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1799 struct tx_traffic_info *tx_stats;
1801 BUG_ON(tid >= MWL8K_MAX_TID);
1802 tx_stats = &sta_info->tx_stats[tid];
1804 return sta_info->is_ampdu_allowed &&
1805 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1808 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1810 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1811 struct tx_traffic_info *tx_stats;
1813 BUG_ON(tid >= MWL8K_MAX_TID);
1814 tx_stats = &sta_info->tx_stats[tid];
1816 if (tx_stats->start_time == 0)
1817 tx_stats->start_time = jiffies;
1819 /* reset the packet count after each second elapses. If the number of
1820 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1821 * an ampdu stream to be started.
1823 if (jiffies - tx_stats->start_time > HZ) {
1825 tx_stats->start_time = 0;
1831 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1833 struct ieee80211_sta *sta,
1834 struct sk_buff *skb)
1836 struct mwl8k_priv *priv = hw->priv;
1837 struct ieee80211_tx_info *tx_info;
1838 struct mwl8k_vif *mwl8k_vif;
1839 struct ieee80211_hdr *wh;
1840 struct mwl8k_tx_queue *txq;
1841 struct mwl8k_tx_desc *tx;
1848 struct mwl8k_ampdu_stream *stream = NULL;
1849 bool start_ba_session = false;
1850 bool mgmtframe = false;
1851 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1852 bool eapol_frame = false;
1854 wh = (struct ieee80211_hdr *)skb->data;
1855 if (ieee80211_is_data_qos(wh->frame_control))
1856 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1860 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1863 if (ieee80211_is_mgmt(wh->frame_control))
1867 mwl8k_encapsulate_tx_frame(priv, skb);
1869 mwl8k_add_dma_header(priv, skb, 0, 0);
1871 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1873 tx_info = IEEE80211_SKB_CB(skb);
1874 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1876 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1877 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1878 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1879 mwl8k_vif->seqno += 0x10;
1882 /* Setup firmware control bit fields for each frame type. */
1885 if (ieee80211_is_mgmt(wh->frame_control) ||
1886 ieee80211_is_ctl(wh->frame_control)) {
1888 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1889 } else if (ieee80211_is_data(wh->frame_control)) {
1891 if (is_multicast_ether_addr(wh->addr1))
1892 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1894 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1895 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1896 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1898 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1901 /* Queue ADDBA request in the respective data queue. While setting up
1902 * the ampdu stream, mac80211 queues further packets for that
1903 * particular ra/tid pair. However, packets piled up in the hardware
1904 * for that ra/tid pair will still go out. ADDBA request and the
1905 * related data packets going out from different queues asynchronously
1906 * will cause a shift in the receiver window which might result in
1907 * ampdu packets getting dropped at the receiver after the stream has
1910 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1911 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1912 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1914 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1915 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1916 index = mwl8k_tid_queue_mapping(tid);
1921 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1922 ieee80211_is_data_qos(wh->frame_control)) {
1924 mwl8k_tx_count_packet(sta, tid);
1925 spin_lock(&priv->stream_lock);
1926 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1927 if (stream != NULL) {
1928 if (stream->state == AMPDU_STREAM_ACTIVE) {
1929 txpriority = stream->idx + MWL8K_TX_WMM_QUEUES;
1930 index = stream->idx + MWL8K_TX_WMM_QUEUES;
1931 } else if (stream->state == AMPDU_STREAM_NEW) {
1932 /* We get here if the driver sends us packets
1933 * after we've initiated a stream, but before
1934 * our ampdu_action routine has been called
1935 * with IEEE80211_AMPDU_TX_START to get the SSN
1936 * for the ADDBA request. So this packet can
1937 * go out with no risk of sequence number
1938 * mismatch. No special handling is required.
1941 /* Drop packets that would go out after the
1942 * ADDBA request was sent but before the ADDBA
1943 * response is received. If we don't do this,
1944 * the recipient would probably receive it
1945 * after the ADDBA request with SSN 0. This
1946 * will cause the recipient's BA receive window
1947 * to shift, which would cause the subsequent
1948 * packets in the BA stream to be discarded.
1949 * mac80211 queues our packets for us in this
1950 * case, so this is really just a safety check.
1952 wiphy_warn(hw->wiphy,
1953 "Cannot send packet while ADDBA "
1954 "dialog is underway.\n");
1955 spin_unlock(&priv->stream_lock);
1960 /* Defer calling mwl8k_start_stream so that the current
1961 * skb can go out before the ADDBA request. This
1962 * prevents sequence number mismatch at the recepient
1963 * as described above.
1965 if (mwl8k_ampdu_allowed(sta, tid)) {
1966 stream = mwl8k_add_stream(hw, sta, tid);
1968 start_ba_session = true;
1971 spin_unlock(&priv->stream_lock);
1974 dma = pci_map_single(priv->pdev, skb->data,
1975 skb->len, PCI_DMA_TODEVICE);
1977 if (pci_dma_mapping_error(priv->pdev, dma)) {
1978 wiphy_debug(hw->wiphy,
1979 "failed to dma map skb, dropping TX frame.\n");
1980 if (start_ba_session) {
1981 spin_lock(&priv->stream_lock);
1982 mwl8k_remove_stream(hw, stream);
1983 spin_unlock(&priv->stream_lock);
1989 spin_lock_bh(&priv->tx_lock);
1991 txq = priv->txq + index;
1993 /* Mgmt frames that go out frequently are probe
1994 * responses. Other mgmt frames got out relatively
1995 * infrequently. Hence reserve 2 buffers so that
1996 * other mgmt frames do not get dropped due to an
1997 * already queued probe response in one of the
2001 if (txq->len >= MWL8K_TX_DESCS - 2) {
2002 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2003 if (start_ba_session) {
2004 spin_lock(&priv->stream_lock);
2005 mwl8k_remove_stream(hw, stream);
2006 spin_unlock(&priv->stream_lock);
2008 spin_unlock_bh(&priv->tx_lock);
2009 pci_unmap_single(priv->pdev, dma, skb->len,
2016 BUG_ON(txq->skb[txq->tail] != NULL);
2017 txq->skb[txq->tail] = skb;
2019 tx = txq->txd + txq->tail;
2020 tx->data_rate = txdatarate;
2021 tx->tx_priority = txpriority;
2022 tx->qos_control = cpu_to_le16(qos);
2023 tx->pkt_phys_addr = cpu_to_le32(dma);
2024 tx->pkt_len = cpu_to_le16(skb->len);
2026 if (!priv->ap_fw && sta != NULL)
2027 tx->peer_id = MWL8K_STA(sta)->peer_id;
2031 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2032 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2033 MWL8K_HW_TIMER_REGISTER));
2038 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2041 priv->pending_tx_pkts++;
2044 if (txq->tail == MWL8K_TX_DESCS)
2047 mwl8k_tx_start(priv);
2049 spin_unlock_bh(&priv->tx_lock);
2051 /* Initiate the ampdu session here */
2052 if (start_ba_session) {
2053 spin_lock(&priv->stream_lock);
2054 if (mwl8k_start_stream(hw, stream))
2055 mwl8k_remove_stream(hw, stream);
2056 spin_unlock(&priv->stream_lock);
2064 * We have the following requirements for issuing firmware commands:
2065 * - Some commands require that the packet transmit path is idle when
2066 * the command is issued. (For simplicity, we'll just quiesce the
2067 * transmit path for every command.)
2068 * - There are certain sequences of commands that need to be issued to
2069 * the hardware sequentially, with no other intervening commands.
2071 * This leads to an implementation of a "firmware lock" as a mutex that
2072 * can be taken recursively, and which is taken by both the low-level
2073 * command submission function (mwl8k_post_cmd) as well as any users of
2074 * that function that require issuing of an atomic sequence of commands,
2075 * and quiesces the transmit path whenever it's taken.
2077 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2079 struct mwl8k_priv *priv = hw->priv;
2081 if (priv->fw_mutex_owner != current) {
2084 mutex_lock(&priv->fw_mutex);
2085 ieee80211_stop_queues(hw);
2087 rc = mwl8k_tx_wait_empty(hw);
2089 if (!priv->hw_restart_in_progress)
2090 ieee80211_wake_queues(hw);
2092 mutex_unlock(&priv->fw_mutex);
2097 priv->fw_mutex_owner = current;
2100 priv->fw_mutex_depth++;
2105 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2107 struct mwl8k_priv *priv = hw->priv;
2109 if (!--priv->fw_mutex_depth) {
2110 if (!priv->hw_restart_in_progress)
2111 ieee80211_wake_queues(hw);
2113 priv->fw_mutex_owner = NULL;
2114 mutex_unlock(&priv->fw_mutex);
2120 * Command processing.
2123 /* Timeout firmware commands after 10s */
2124 #define MWL8K_CMD_TIMEOUT_MS 10000
2126 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2128 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2129 struct mwl8k_priv *priv = hw->priv;
2130 void __iomem *regs = priv->regs;
2131 dma_addr_t dma_addr;
2132 unsigned int dma_size;
2134 unsigned long timeout = 0;
2137 cmd->result = (__force __le16) 0xffff;
2138 dma_size = le16_to_cpu(cmd->length);
2139 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2140 PCI_DMA_BIDIRECTIONAL);
2141 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2144 rc = mwl8k_fw_lock(hw);
2146 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2147 PCI_DMA_BIDIRECTIONAL);
2151 priv->hostcmd_wait = &cmd_wait;
2152 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2153 iowrite32(MWL8K_H2A_INT_DOORBELL,
2154 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2155 iowrite32(MWL8K_H2A_INT_DUMMY,
2156 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2158 timeout = wait_for_completion_timeout(&cmd_wait,
2159 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2161 priv->hostcmd_wait = NULL;
2163 mwl8k_fw_unlock(hw);
2165 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2166 PCI_DMA_BIDIRECTIONAL);
2169 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2170 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2171 MWL8K_CMD_TIMEOUT_MS);
2176 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2178 rc = cmd->result ? -EINVAL : 0;
2180 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2181 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2182 le16_to_cpu(cmd->result));
2184 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2185 mwl8k_cmd_name(cmd->code,
2193 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2194 struct ieee80211_vif *vif,
2195 struct mwl8k_cmd_pkt *cmd)
2198 cmd->macid = MWL8K_VIF(vif)->macid;
2199 return mwl8k_post_cmd(hw, cmd);
2203 * Setup code shared between STA and AP firmware images.
2205 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2207 struct mwl8k_priv *priv = hw->priv;
2209 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2210 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2212 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2213 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2215 priv->band_24.band = IEEE80211_BAND_2GHZ;
2216 priv->band_24.channels = priv->channels_24;
2217 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2218 priv->band_24.bitrates = priv->rates_24;
2219 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2221 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2224 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2226 struct mwl8k_priv *priv = hw->priv;
2228 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2229 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2231 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2232 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2234 priv->band_50.band = IEEE80211_BAND_5GHZ;
2235 priv->band_50.channels = priv->channels_50;
2236 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2237 priv->band_50.bitrates = priv->rates_50;
2238 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2240 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2244 * CMD_GET_HW_SPEC (STA version).
2246 struct mwl8k_cmd_get_hw_spec_sta {
2247 struct mwl8k_cmd_pkt header;
2249 __u8 host_interface;
2251 __u8 perm_addr[ETH_ALEN];
2256 __u8 mcs_bitmap[16];
2257 __le32 rx_queue_ptr;
2258 __le32 num_tx_queues;
2259 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2261 __le32 num_tx_desc_per_queue;
2265 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2266 #define MWL8K_CAP_GREENFIELD 0x08000000
2267 #define MWL8K_CAP_AMPDU 0x04000000
2268 #define MWL8K_CAP_RX_STBC 0x01000000
2269 #define MWL8K_CAP_TX_STBC 0x00800000
2270 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2271 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2272 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2273 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2274 #define MWL8K_CAP_DELAY_BA 0x00003000
2275 #define MWL8K_CAP_MIMO 0x00000200
2276 #define MWL8K_CAP_40MHZ 0x00000100
2277 #define MWL8K_CAP_BAND_MASK 0x00000007
2278 #define MWL8K_CAP_5GHZ 0x00000004
2279 #define MWL8K_CAP_2GHZ4 0x00000001
2282 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2283 struct ieee80211_supported_band *band, u32 cap)
2288 band->ht_cap.ht_supported = 1;
2290 if (cap & MWL8K_CAP_MAX_AMSDU)
2291 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2292 if (cap & MWL8K_CAP_GREENFIELD)
2293 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2294 if (cap & MWL8K_CAP_AMPDU) {
2295 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2296 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2297 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2299 if (cap & MWL8K_CAP_RX_STBC)
2300 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2301 if (cap & MWL8K_CAP_TX_STBC)
2302 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2303 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2304 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2305 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2306 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2307 if (cap & MWL8K_CAP_DELAY_BA)
2308 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2309 if (cap & MWL8K_CAP_40MHZ)
2310 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2312 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2313 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2315 band->ht_cap.mcs.rx_mask[0] = 0xff;
2316 if (rx_streams >= 2)
2317 band->ht_cap.mcs.rx_mask[1] = 0xff;
2318 if (rx_streams >= 3)
2319 band->ht_cap.mcs.rx_mask[2] = 0xff;
2320 band->ht_cap.mcs.rx_mask[4] = 0x01;
2321 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2323 if (rx_streams != tx_streams) {
2324 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2325 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2326 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2331 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2333 struct mwl8k_priv *priv = hw->priv;
2335 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2336 mwl8k_setup_2ghz_band(hw);
2337 if (caps & MWL8K_CAP_MIMO)
2338 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2341 if (caps & MWL8K_CAP_5GHZ) {
2342 mwl8k_setup_5ghz_band(hw);
2343 if (caps & MWL8K_CAP_MIMO)
2344 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2348 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2350 struct mwl8k_priv *priv = hw->priv;
2351 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2355 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2359 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2360 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2362 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2363 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2364 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2365 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2366 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2367 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2368 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2369 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2371 rc = mwl8k_post_cmd(hw, &cmd->header);
2374 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2375 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2376 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2377 priv->hw_rev = cmd->hw_rev;
2378 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2379 priv->ap_macids_supported = 0x00000000;
2380 priv->sta_macids_supported = 0x00000001;
2388 * CMD_GET_HW_SPEC (AP version).
2390 struct mwl8k_cmd_get_hw_spec_ap {
2391 struct mwl8k_cmd_pkt header;
2393 __u8 host_interface;
2396 __u8 perm_addr[ETH_ALEN];
2407 __le32 fw_api_version;
2409 __le32 num_of_ampdu_queues;
2410 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2413 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2415 struct mwl8k_priv *priv = hw->priv;
2416 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2420 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2424 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2425 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2427 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2428 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2430 rc = mwl8k_post_cmd(hw, &cmd->header);
2435 api_version = le32_to_cpu(cmd->fw_api_version);
2436 if (priv->device_info->fw_api_ap != api_version) {
2437 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2438 " Expected %d got %d.\n", MWL8K_NAME,
2439 priv->device_info->part_name,
2440 priv->device_info->fw_api_ap,
2445 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2446 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2447 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2448 priv->hw_rev = cmd->hw_rev;
2449 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2450 priv->ap_macids_supported = 0x000000ff;
2451 priv->sta_macids_supported = 0x00000000;
2452 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2453 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2454 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2455 " but we only support %d.\n",
2456 priv->num_ampdu_queues,
2457 MWL8K_MAX_AMPDU_QUEUES);
2458 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2460 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2461 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2463 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2464 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2466 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2467 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2468 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2469 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2471 for (i = 0; i < priv->num_ampdu_queues; i++)
2472 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2473 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2484 struct mwl8k_cmd_set_hw_spec {
2485 struct mwl8k_cmd_pkt header;
2487 __u8 host_interface;
2489 __u8 perm_addr[ETH_ALEN];
2494 __le32 rx_queue_ptr;
2495 __le32 num_tx_queues;
2496 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2498 __le32 num_tx_desc_per_queue;
2502 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2503 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2504 * the packets that are queued for more than 500ms, will be dropped in the
2505 * hardware. This helps minimizing the issues caused due to head-of-line
2506 * blocking where a slow client can hog the bandwidth and affect traffic to a
2509 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2510 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2511 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2512 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2513 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2515 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2517 struct mwl8k_priv *priv = hw->priv;
2518 struct mwl8k_cmd_set_hw_spec *cmd;
2522 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2526 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2527 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2529 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2530 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2531 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2534 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2535 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2536 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2537 * priority is interpreted the right way in firmware.
2539 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2540 int j = mwl8k_tx_queues(priv) - 1 - i;
2541 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2544 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2545 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2546 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2547 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2548 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2549 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2550 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2552 rc = mwl8k_post_cmd(hw, &cmd->header);
2559 * CMD_MAC_MULTICAST_ADR.
2561 struct mwl8k_cmd_mac_multicast_adr {
2562 struct mwl8k_cmd_pkt header;
2565 __u8 addr[0][ETH_ALEN];
2568 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2569 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2570 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2571 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2573 static struct mwl8k_cmd_pkt *
2574 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2575 struct netdev_hw_addr_list *mc_list)
2577 struct mwl8k_priv *priv = hw->priv;
2578 struct mwl8k_cmd_mac_multicast_adr *cmd;
2583 mc_count = netdev_hw_addr_list_count(mc_list);
2585 if (allmulti || mc_count > priv->num_mcaddrs) {
2590 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2592 cmd = kzalloc(size, GFP_ATOMIC);
2596 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2597 cmd->header.length = cpu_to_le16(size);
2598 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2599 MWL8K_ENABLE_RX_BROADCAST);
2602 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2603 } else if (mc_count) {
2604 struct netdev_hw_addr *ha;
2607 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2608 cmd->numaddr = cpu_to_le16(mc_count);
2609 netdev_hw_addr_list_for_each(ha, mc_list) {
2610 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2614 return &cmd->header;
2620 struct mwl8k_cmd_get_stat {
2621 struct mwl8k_cmd_pkt header;
2625 #define MWL8K_STAT_ACK_FAILURE 9
2626 #define MWL8K_STAT_RTS_FAILURE 12
2627 #define MWL8K_STAT_FCS_ERROR 24
2628 #define MWL8K_STAT_RTS_SUCCESS 11
2630 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2631 struct ieee80211_low_level_stats *stats)
2633 struct mwl8k_cmd_get_stat *cmd;
2636 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2640 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2641 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2643 rc = mwl8k_post_cmd(hw, &cmd->header);
2645 stats->dot11ACKFailureCount =
2646 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2647 stats->dot11RTSFailureCount =
2648 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2649 stats->dot11FCSErrorCount =
2650 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2651 stats->dot11RTSSuccessCount =
2652 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2660 * CMD_RADIO_CONTROL.
2662 struct mwl8k_cmd_radio_control {
2663 struct mwl8k_cmd_pkt header;
2670 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2672 struct mwl8k_priv *priv = hw->priv;
2673 struct mwl8k_cmd_radio_control *cmd;
2676 if (enable == priv->radio_on && !force)
2679 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2683 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2684 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2685 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2686 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2687 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2689 rc = mwl8k_post_cmd(hw, &cmd->header);
2693 priv->radio_on = enable;
2698 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2700 return mwl8k_cmd_radio_control(hw, 0, 0);
2703 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2705 return mwl8k_cmd_radio_control(hw, 1, 0);
2709 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2711 struct mwl8k_priv *priv = hw->priv;
2713 priv->radio_short_preamble = short_preamble;
2715 return mwl8k_cmd_radio_control(hw, 1, 1);
2721 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2723 struct mwl8k_cmd_rf_tx_power {
2724 struct mwl8k_cmd_pkt header;
2726 __le16 support_level;
2727 __le16 current_level;
2729 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2732 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2734 struct mwl8k_cmd_rf_tx_power *cmd;
2737 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2741 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2742 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2743 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2744 cmd->support_level = cpu_to_le16(dBm);
2746 rc = mwl8k_post_cmd(hw, &cmd->header);
2755 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2757 struct mwl8k_cmd_tx_power {
2758 struct mwl8k_cmd_pkt header;
2764 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2767 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2768 struct ieee80211_conf *conf,
2771 struct ieee80211_channel *channel = conf->channel;
2772 struct mwl8k_cmd_tx_power *cmd;
2776 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2780 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2781 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2782 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2784 if (channel->band == IEEE80211_BAND_2GHZ)
2785 cmd->band = cpu_to_le16(0x1);
2786 else if (channel->band == IEEE80211_BAND_5GHZ)
2787 cmd->band = cpu_to_le16(0x4);
2789 cmd->channel = cpu_to_le16(channel->hw_value);
2791 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2792 conf->channel_type == NL80211_CHAN_HT20) {
2793 cmd->bw = cpu_to_le16(0x2);
2795 cmd->bw = cpu_to_le16(0x4);
2796 if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2797 cmd->sub_ch = cpu_to_le16(0x3);
2798 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2799 cmd->sub_ch = cpu_to_le16(0x1);
2802 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2803 cmd->power_level_list[i] = cpu_to_le16(pwr);
2805 rc = mwl8k_post_cmd(hw, &cmd->header);
2814 struct mwl8k_cmd_rf_antenna {
2815 struct mwl8k_cmd_pkt header;
2820 #define MWL8K_RF_ANTENNA_RX 1
2821 #define MWL8K_RF_ANTENNA_TX 2
2824 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2826 struct mwl8k_cmd_rf_antenna *cmd;
2829 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2833 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2834 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2835 cmd->antenna = cpu_to_le16(antenna);
2836 cmd->mode = cpu_to_le16(mask);
2838 rc = mwl8k_post_cmd(hw, &cmd->header);
2847 struct mwl8k_cmd_set_beacon {
2848 struct mwl8k_cmd_pkt header;
2853 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2854 struct ieee80211_vif *vif, u8 *beacon, int len)
2856 struct mwl8k_cmd_set_beacon *cmd;
2859 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2863 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2864 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2865 cmd->beacon_len = cpu_to_le16(len);
2866 memcpy(cmd->beacon, beacon, len);
2868 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2877 struct mwl8k_cmd_set_pre_scan {
2878 struct mwl8k_cmd_pkt header;
2881 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2883 struct mwl8k_cmd_set_pre_scan *cmd;
2886 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2890 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2891 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2893 rc = mwl8k_post_cmd(hw, &cmd->header);
2900 * CMD_SET_POST_SCAN.
2902 struct mwl8k_cmd_set_post_scan {
2903 struct mwl8k_cmd_pkt header;
2905 __u8 bssid[ETH_ALEN];
2909 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
2911 struct mwl8k_cmd_set_post_scan *cmd;
2914 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2918 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
2919 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2921 memcpy(cmd->bssid, mac, ETH_ALEN);
2923 rc = mwl8k_post_cmd(hw, &cmd->header);
2930 * CMD_SET_RF_CHANNEL.
2932 struct mwl8k_cmd_set_rf_channel {
2933 struct mwl8k_cmd_pkt header;
2935 __u8 current_channel;
2936 __le32 channel_flags;
2939 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
2940 struct ieee80211_conf *conf)
2942 struct ieee80211_channel *channel = conf->channel;
2943 struct mwl8k_cmd_set_rf_channel *cmd;
2946 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2950 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
2951 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2952 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2953 cmd->current_channel = channel->hw_value;
2955 if (channel->band == IEEE80211_BAND_2GHZ)
2956 cmd->channel_flags |= cpu_to_le32(0x00000001);
2957 else if (channel->band == IEEE80211_BAND_5GHZ)
2958 cmd->channel_flags |= cpu_to_le32(0x00000004);
2960 if (conf->channel_type == NL80211_CHAN_NO_HT ||
2961 conf->channel_type == NL80211_CHAN_HT20)
2962 cmd->channel_flags |= cpu_to_le32(0x00000080);
2963 else if (conf->channel_type == NL80211_CHAN_HT40MINUS)
2964 cmd->channel_flags |= cpu_to_le32(0x000001900);
2965 else if (conf->channel_type == NL80211_CHAN_HT40PLUS)
2966 cmd->channel_flags |= cpu_to_le32(0x000000900);
2968 rc = mwl8k_post_cmd(hw, &cmd->header);
2977 #define MWL8K_FRAME_PROT_DISABLED 0x00
2978 #define MWL8K_FRAME_PROT_11G 0x07
2979 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
2980 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
2982 struct mwl8k_cmd_update_set_aid {
2983 struct mwl8k_cmd_pkt header;
2986 /* AP's MAC address (BSSID) */
2987 __u8 bssid[ETH_ALEN];
2988 __le16 protection_mode;
2989 __u8 supp_rates[14];
2992 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
2998 * Clear nonstandard rates 4 and 13.
3002 for (i = 0, j = 0; i < 14; i++) {
3003 if (mask & (1 << i))
3004 rates[j++] = mwl8k_rates_24[i].hw_value;
3009 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3010 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3012 struct mwl8k_cmd_update_set_aid *cmd;
3016 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3020 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3021 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3022 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3023 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3025 if (vif->bss_conf.use_cts_prot) {
3026 prot_mode = MWL8K_FRAME_PROT_11G;
3028 switch (vif->bss_conf.ht_operation_mode &
3029 IEEE80211_HT_OP_MODE_PROTECTION) {
3030 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3031 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3033 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3034 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3037 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3041 cmd->protection_mode = cpu_to_le16(prot_mode);
3043 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3045 rc = mwl8k_post_cmd(hw, &cmd->header);
3054 struct mwl8k_cmd_set_rate {
3055 struct mwl8k_cmd_pkt header;
3056 __u8 legacy_rates[14];
3058 /* Bitmap for supported MCS codes. */
3064 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3065 u32 legacy_rate_mask, u8 *mcs_rates)
3067 struct mwl8k_cmd_set_rate *cmd;
3070 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3074 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3075 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3076 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3077 memcpy(cmd->mcs_set, mcs_rates, 16);
3079 rc = mwl8k_post_cmd(hw, &cmd->header);
3086 * CMD_FINALIZE_JOIN.
3088 #define MWL8K_FJ_BEACON_MAXLEN 128
3090 struct mwl8k_cmd_finalize_join {
3091 struct mwl8k_cmd_pkt header;
3092 __le32 sleep_interval; /* Number of beacon periods to sleep */
3093 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3096 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3097 int framelen, int dtim)
3099 struct mwl8k_cmd_finalize_join *cmd;
3100 struct ieee80211_mgmt *payload = frame;
3104 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3108 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3109 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3110 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3112 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3113 if (payload_len < 0)
3115 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3116 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3118 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3120 rc = mwl8k_post_cmd(hw, &cmd->header);
3127 * CMD_SET_RTS_THRESHOLD.
3129 struct mwl8k_cmd_set_rts_threshold {
3130 struct mwl8k_cmd_pkt header;
3136 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3138 struct mwl8k_cmd_set_rts_threshold *cmd;
3141 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3145 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3146 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3147 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3148 cmd->threshold = cpu_to_le16(rts_thresh);
3150 rc = mwl8k_post_cmd(hw, &cmd->header);
3159 struct mwl8k_cmd_set_slot {
3160 struct mwl8k_cmd_pkt header;
3165 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3167 struct mwl8k_cmd_set_slot *cmd;
3170 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3174 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3175 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3176 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3177 cmd->short_slot = short_slot_time;
3179 rc = mwl8k_post_cmd(hw, &cmd->header);
3186 * CMD_SET_EDCA_PARAMS.
3188 struct mwl8k_cmd_set_edca_params {
3189 struct mwl8k_cmd_pkt header;
3191 /* See MWL8K_SET_EDCA_XXX below */
3194 /* TX opportunity in units of 32 us */
3199 /* Log exponent of max contention period: 0...15 */
3202 /* Log exponent of min contention period: 0...15 */
3205 /* Adaptive interframe spacing in units of 32us */
3208 /* TX queue to configure */
3212 /* Log exponent of max contention period: 0...15 */
3215 /* Log exponent of min contention period: 0...15 */
3218 /* Adaptive interframe spacing in units of 32us */
3221 /* TX queue to configure */
3227 #define MWL8K_SET_EDCA_CW 0x01
3228 #define MWL8K_SET_EDCA_TXOP 0x02
3229 #define MWL8K_SET_EDCA_AIFS 0x04
3231 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3232 MWL8K_SET_EDCA_TXOP | \
3233 MWL8K_SET_EDCA_AIFS)
3236 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3237 __u16 cw_min, __u16 cw_max,
3238 __u8 aifs, __u16 txop)
3240 struct mwl8k_priv *priv = hw->priv;
3241 struct mwl8k_cmd_set_edca_params *cmd;
3244 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3248 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3249 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3250 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3251 cmd->txop = cpu_to_le16(txop);
3253 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3254 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3255 cmd->ap.aifs = aifs;
3258 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3259 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3260 cmd->sta.aifs = aifs;
3261 cmd->sta.txq = qnum;
3264 rc = mwl8k_post_cmd(hw, &cmd->header);
3273 struct mwl8k_cmd_set_wmm_mode {
3274 struct mwl8k_cmd_pkt header;
3278 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3280 struct mwl8k_priv *priv = hw->priv;
3281 struct mwl8k_cmd_set_wmm_mode *cmd;
3284 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3288 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3289 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3290 cmd->action = cpu_to_le16(!!enable);
3292 rc = mwl8k_post_cmd(hw, &cmd->header);
3296 priv->wmm_enabled = enable;
3304 struct mwl8k_cmd_mimo_config {
3305 struct mwl8k_cmd_pkt header;
3307 __u8 rx_antenna_map;
3308 __u8 tx_antenna_map;
3311 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3313 struct mwl8k_cmd_mimo_config *cmd;
3316 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3320 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3321 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3322 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3323 cmd->rx_antenna_map = rx;
3324 cmd->tx_antenna_map = tx;
3326 rc = mwl8k_post_cmd(hw, &cmd->header);
3333 * CMD_USE_FIXED_RATE (STA version).
3335 struct mwl8k_cmd_use_fixed_rate_sta {
3336 struct mwl8k_cmd_pkt header;
3338 __le32 allow_rate_drop;
3342 __le32 enable_retry;
3351 #define MWL8K_USE_AUTO_RATE 0x0002
3352 #define MWL8K_UCAST_RATE 0
3354 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3356 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3359 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3363 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3364 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3365 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3366 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3368 rc = mwl8k_post_cmd(hw, &cmd->header);
3375 * CMD_USE_FIXED_RATE (AP version).
3377 struct mwl8k_cmd_use_fixed_rate_ap {
3378 struct mwl8k_cmd_pkt header;
3380 __le32 allow_rate_drop;
3382 struct mwl8k_rate_entry_ap {
3384 __le32 enable_retry;
3389 u8 multicast_rate_type;
3394 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3396 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3399 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3403 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3404 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3405 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3406 cmd->multicast_rate = mcast;
3407 cmd->management_rate = mgmt;
3409 rc = mwl8k_post_cmd(hw, &cmd->header);
3416 * CMD_ENABLE_SNIFFER.
3418 struct mwl8k_cmd_enable_sniffer {
3419 struct mwl8k_cmd_pkt header;
3423 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3425 struct mwl8k_cmd_enable_sniffer *cmd;
3428 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3432 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3433 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3434 cmd->action = cpu_to_le32(!!enable);
3436 rc = mwl8k_post_cmd(hw, &cmd->header);
3442 struct mwl8k_cmd_update_mac_addr {
3443 struct mwl8k_cmd_pkt header;
3447 __u8 mac_addr[ETH_ALEN];
3449 __u8 mac_addr[ETH_ALEN];
3453 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3454 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3455 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3456 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3458 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3459 struct ieee80211_vif *vif, u8 *mac, bool set)
3461 struct mwl8k_priv *priv = hw->priv;
3462 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3463 struct mwl8k_cmd_update_mac_addr *cmd;
3467 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3468 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3469 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3470 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3472 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3473 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3474 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3475 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3477 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3480 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3485 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3487 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3489 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3491 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3492 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3494 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3497 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3504 * MWL8K_CMD_SET_MAC_ADDR.
3506 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3507 struct ieee80211_vif *vif, u8 *mac)
3509 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3513 * MWL8K_CMD_DEL_MAC_ADDR.
3515 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3516 struct ieee80211_vif *vif, u8 *mac)
3518 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3522 * CMD_SET_RATEADAPT_MODE.
3524 struct mwl8k_cmd_set_rate_adapt_mode {
3525 struct mwl8k_cmd_pkt header;
3530 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3532 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3535 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3539 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3540 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3541 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3542 cmd->mode = cpu_to_le16(mode);
3544 rc = mwl8k_post_cmd(hw, &cmd->header);
3551 * CMD_GET_WATCHDOG_BITMAP.
3553 struct mwl8k_cmd_get_watchdog_bitmap {
3554 struct mwl8k_cmd_pkt header;
3558 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3560 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3563 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3567 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3568 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3570 rc = mwl8k_post_cmd(hw, &cmd->header);
3572 *bitmap = cmd->bitmap;
3579 #define INVALID_BA 0xAA
3580 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3583 u8 bitmap = 0, stream_index;
3584 struct mwl8k_ampdu_stream *streams;
3585 struct mwl8k_priv *priv =
3586 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3588 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3592 if (bitmap == INVALID_BA)
3595 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3596 stream_index = bitmap - MWL8K_TX_WMM_QUEUES;
3598 BUG_ON(stream_index >= priv->num_ampdu_queues);
3600 streams = &priv->ampdu[stream_index];
3602 if (streams->state == AMPDU_STREAM_ACTIVE)
3603 ieee80211_stop_tx_ba_session(streams->sta, streams->tid);
3612 struct mwl8k_cmd_bss_start {
3613 struct mwl8k_cmd_pkt header;
3617 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3618 struct ieee80211_vif *vif, int enable)
3620 struct mwl8k_cmd_bss_start *cmd;
3623 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3627 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3628 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3629 cmd->enable = cpu_to_le32(enable);
3631 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3642 * UPSTREAM is tx direction
3644 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3645 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3647 enum ba_stream_action_type {
3656 struct mwl8k_create_ba_stream {
3661 u8 peer_mac_addr[6];
3667 u8 reset_seq_no_flag;
3669 u8 sta_src_mac_addr[6];
3672 struct mwl8k_destroy_ba_stream {
3677 struct mwl8k_cmd_bastream {
3678 struct mwl8k_cmd_pkt header;
3681 struct mwl8k_create_ba_stream create_params;
3682 struct mwl8k_destroy_ba_stream destroy_params;
3687 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3688 struct ieee80211_vif *vif)
3690 struct mwl8k_cmd_bastream *cmd;
3693 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3697 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3698 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3700 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3702 cmd->create_params.queue_id = stream->idx;
3703 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3705 cmd->create_params.tid = stream->tid;
3707 cmd->create_params.flags =
3708 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3709 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3711 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3719 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3720 u8 buf_size, struct ieee80211_vif *vif)
3722 struct mwl8k_cmd_bastream *cmd;
3725 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3730 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3731 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3733 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
3735 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
3736 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
3737 cmd->create_params.queue_id = stream->idx;
3739 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
3740 cmd->create_params.tid = stream->tid;
3741 cmd->create_params.curr_seq_no = cpu_to_le16(0);
3742 cmd->create_params.reset_seq_no_flag = 1;
3744 cmd->create_params.param_info =
3745 (stream->sta->ht_cap.ampdu_factor &
3746 IEEE80211_HT_AMPDU_PARM_FACTOR) |
3747 ((stream->sta->ht_cap.ampdu_density << 2) &
3748 IEEE80211_HT_AMPDU_PARM_DENSITY);
3750 cmd->create_params.flags =
3751 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
3752 BASTREAM_FLAG_DIRECTION_UPSTREAM);
3754 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3756 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
3757 stream->sta->addr, stream->tid);
3763 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3764 struct mwl8k_ampdu_stream *stream)
3766 struct mwl8k_cmd_bastream *cmd;
3768 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3772 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3773 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3774 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
3776 cmd->destroy_params.ba_context = cpu_to_le32(stream->idx);
3777 mwl8k_post_cmd(hw, &cmd->header);
3779 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx);
3787 struct mwl8k_cmd_set_new_stn {
3788 struct mwl8k_cmd_pkt header;
3794 __le32 legacy_rates;
3797 __le16 ht_capabilities_info;
3798 __u8 mac_ht_param_info;
3800 __u8 control_channel;
3809 #define MWL8K_STA_ACTION_ADD 0
3810 #define MWL8K_STA_ACTION_REMOVE 2
3812 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
3813 struct ieee80211_vif *vif,
3814 struct ieee80211_sta *sta)
3816 struct mwl8k_cmd_set_new_stn *cmd;
3820 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3824 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3825 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3826 cmd->aid = cpu_to_le16(sta->aid);
3827 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
3828 cmd->stn_id = cpu_to_le16(sta->aid);
3829 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
3830 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
3831 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
3833 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
3834 cmd->legacy_rates = cpu_to_le32(rates);
3835 if (sta->ht_cap.ht_supported) {
3836 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
3837 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
3838 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
3839 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
3840 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
3841 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
3842 ((sta->ht_cap.ampdu_density & 7) << 2);
3843 cmd->is_qos_sta = 1;
3846 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3852 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
3853 struct ieee80211_vif *vif)
3855 struct mwl8k_cmd_set_new_stn *cmd;
3858 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3862 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3863 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3864 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
3866 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3872 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
3873 struct ieee80211_vif *vif, u8 *addr)
3875 struct mwl8k_cmd_set_new_stn *cmd;
3878 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3882 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
3883 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3884 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3885 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
3887 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3894 * CMD_UPDATE_ENCRYPTION.
3897 #define MAX_ENCR_KEY_LENGTH 16
3898 #define MIC_KEY_LENGTH 8
3900 struct mwl8k_cmd_update_encryption {
3901 struct mwl8k_cmd_pkt header;
3910 struct mwl8k_cmd_set_key {
3911 struct mwl8k_cmd_pkt header;
3920 __u8 key_material[MAX_ENCR_KEY_LENGTH];
3921 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
3922 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
3923 __le16 tkip_rsc_low;
3924 __le32 tkip_rsc_high;
3925 __le16 tkip_tsc_low;
3926 __le32 tkip_tsc_high;
3933 MWL8K_ENCR_REMOVE_KEY,
3934 MWL8K_ENCR_SET_GROUP_KEY,
3937 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
3938 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
3939 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
3940 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
3941 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
3949 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
3950 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
3951 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
3952 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
3953 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
3955 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
3956 struct ieee80211_vif *vif,
3960 struct mwl8k_cmd_update_encryption *cmd;
3963 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3967 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3968 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3969 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
3970 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3971 cmd->encr_type = encr_type;
3973 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3979 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
3981 struct ieee80211_key_conf *key)
3983 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
3984 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3985 cmd->length = cpu_to_le16(sizeof(*cmd) -
3986 offsetof(struct mwl8k_cmd_set_key, length));
3987 cmd->key_id = cpu_to_le32(key->keyidx);
3988 cmd->key_len = cpu_to_le16(key->keylen);
3989 memcpy(cmd->mac_addr, addr, ETH_ALEN);
3991 switch (key->cipher) {
3992 case WLAN_CIPHER_SUITE_WEP40:
3993 case WLAN_CIPHER_SUITE_WEP104:
3994 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
3995 if (key->keyidx == 0)
3996 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
3999 case WLAN_CIPHER_SUITE_TKIP:
4000 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4001 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4002 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4003 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4004 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4005 | MWL8K_KEY_FLAG_TSC_VALID);
4007 case WLAN_CIPHER_SUITE_CCMP:
4008 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4009 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4010 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4011 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4020 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4021 struct ieee80211_vif *vif,
4023 struct ieee80211_key_conf *key)
4025 struct mwl8k_cmd_set_key *cmd;
4030 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4032 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4036 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4042 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4043 action = MWL8K_ENCR_SET_KEY;
4045 action = MWL8K_ENCR_SET_GROUP_KEY;
4047 switch (key->cipher) {
4048 case WLAN_CIPHER_SUITE_WEP40:
4049 case WLAN_CIPHER_SUITE_WEP104:
4050 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4051 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4052 sizeof(*key) + key->keylen);
4053 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4056 keymlen = key->keylen;
4057 action = MWL8K_ENCR_SET_KEY;
4059 case WLAN_CIPHER_SUITE_TKIP:
4060 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4062 case WLAN_CIPHER_SUITE_CCMP:
4063 keymlen = key->keylen;
4070 memcpy(cmd->key_material, key->key, keymlen);
4071 cmd->action = cpu_to_le32(action);
4073 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4080 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4081 struct ieee80211_vif *vif,
4083 struct ieee80211_key_conf *key)
4085 struct mwl8k_cmd_set_key *cmd;
4087 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4089 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4093 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4097 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4098 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4099 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4101 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4103 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4110 static int mwl8k_set_key(struct ieee80211_hw *hw,
4111 enum set_key_cmd cmd_param,
4112 struct ieee80211_vif *vif,
4113 struct ieee80211_sta *sta,
4114 struct ieee80211_key_conf *key)
4119 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4121 if (vif->type == NL80211_IFTYPE_STATION)
4129 if (cmd_param == SET_KEY) {
4130 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4134 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4135 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4136 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4138 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4140 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4145 mwl8k_vif->is_hw_crypto_enabled = true;
4148 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4160 struct ewc_ht_info {
4166 struct peer_capability_info {
4167 /* Peer type - AP vs. STA. */
4170 /* Basic 802.11 capabilities from assoc resp. */
4173 /* Set if peer supports 802.11n high throughput (HT). */
4176 /* Valid if HT is supported. */
4178 __u8 extended_ht_caps;
4179 struct ewc_ht_info ewc_info;
4181 /* Legacy rate table. Intersection of our rates and peer rates. */
4182 __u8 legacy_rates[12];
4184 /* HT rate table. Intersection of our rates and peer rates. */
4188 /* If set, interoperability mode, no proprietary extensions. */
4192 __le16 amsdu_enabled;
4195 struct mwl8k_cmd_update_stadb {
4196 struct mwl8k_cmd_pkt header;
4198 /* See STADB_ACTION_TYPE */
4201 /* Peer MAC address */
4202 __u8 peer_addr[ETH_ALEN];
4206 /* Peer info - valid during add/update. */
4207 struct peer_capability_info peer_info;
4210 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4211 #define MWL8K_STA_DB_DEL_ENTRY 2
4213 /* Peer Entry flags - used to define the type of the peer node */
4214 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4216 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4217 struct ieee80211_vif *vif,
4218 struct ieee80211_sta *sta)
4220 struct mwl8k_cmd_update_stadb *cmd;
4221 struct peer_capability_info *p;
4225 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4229 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4230 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4231 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4232 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4234 p = &cmd->peer_info;
4235 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4236 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4237 p->ht_support = sta->ht_cap.ht_supported;
4238 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4239 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4240 ((sta->ht_cap.ampdu_density & 7) << 2);
4241 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4242 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4244 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4245 legacy_rate_mask_to_array(p->legacy_rates, rates);
4246 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4248 p->amsdu_enabled = 0;
4250 rc = mwl8k_post_cmd(hw, &cmd->header);
4253 return rc ? rc : p->station_id;
4256 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4257 struct ieee80211_vif *vif, u8 *addr)
4259 struct mwl8k_cmd_update_stadb *cmd;
4262 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4266 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4267 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4268 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4269 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4271 rc = mwl8k_post_cmd(hw, &cmd->header);
4279 * Interrupt handling.
4281 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4283 struct ieee80211_hw *hw = dev_id;
4284 struct mwl8k_priv *priv = hw->priv;
4287 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4291 if (status & MWL8K_A2H_INT_TX_DONE) {
4292 status &= ~MWL8K_A2H_INT_TX_DONE;
4293 tasklet_schedule(&priv->poll_tx_task);
4296 if (status & MWL8K_A2H_INT_RX_READY) {
4297 status &= ~MWL8K_A2H_INT_RX_READY;
4298 tasklet_schedule(&priv->poll_rx_task);
4301 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4302 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4303 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4307 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4309 if (status & MWL8K_A2H_INT_OPC_DONE) {
4310 if (priv->hostcmd_wait != NULL)
4311 complete(priv->hostcmd_wait);
4314 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4315 if (!mutex_is_locked(&priv->fw_mutex) &&
4316 priv->radio_on && priv->pending_tx_pkts)
4317 mwl8k_tx_start(priv);
4323 static void mwl8k_tx_poll(unsigned long data)
4325 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4326 struct mwl8k_priv *priv = hw->priv;
4332 spin_lock_bh(&priv->tx_lock);
4334 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4335 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4337 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4338 complete(priv->tx_wait);
4339 priv->tx_wait = NULL;
4342 spin_unlock_bh(&priv->tx_lock);
4345 writel(~MWL8K_A2H_INT_TX_DONE,
4346 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4348 tasklet_schedule(&priv->poll_tx_task);
4352 static void mwl8k_rx_poll(unsigned long data)
4354 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4355 struct mwl8k_priv *priv = hw->priv;
4359 limit -= rxq_process(hw, 0, limit);
4360 limit -= rxq_refill(hw, 0, limit);
4363 writel(~MWL8K_A2H_INT_RX_READY,
4364 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4366 tasklet_schedule(&priv->poll_rx_task);
4372 * Core driver operations.
4374 static void mwl8k_tx(struct ieee80211_hw *hw,
4375 struct ieee80211_tx_control *control,
4376 struct sk_buff *skb)
4378 struct mwl8k_priv *priv = hw->priv;
4379 int index = skb_get_queue_mapping(skb);
4381 if (!priv->radio_on) {
4382 wiphy_debug(hw->wiphy,
4383 "dropped TX frame since radio disabled\n");
4388 mwl8k_txq_xmit(hw, index, control->sta, skb);
4391 static int mwl8k_start(struct ieee80211_hw *hw)
4393 struct mwl8k_priv *priv = hw->priv;
4396 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4397 IRQF_SHARED, MWL8K_NAME, hw);
4400 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4403 priv->irq = priv->pdev->irq;
4405 /* Enable TX reclaim and RX tasklets. */
4406 tasklet_enable(&priv->poll_tx_task);
4407 tasklet_enable(&priv->poll_rx_task);
4409 /* Enable interrupts */
4410 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4411 iowrite32(MWL8K_A2H_EVENTS,
4412 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4414 rc = mwl8k_fw_lock(hw);
4416 rc = mwl8k_cmd_radio_enable(hw);
4420 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4423 rc = mwl8k_cmd_set_pre_scan(hw);
4426 rc = mwl8k_cmd_set_post_scan(hw,
4427 "\x00\x00\x00\x00\x00\x00");
4431 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4434 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4436 mwl8k_fw_unlock(hw);
4440 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4441 free_irq(priv->pdev->irq, hw);
4443 tasklet_disable(&priv->poll_tx_task);
4444 tasklet_disable(&priv->poll_rx_task);
4450 static void mwl8k_stop(struct ieee80211_hw *hw)
4452 struct mwl8k_priv *priv = hw->priv;
4455 if (!priv->hw_restart_in_progress)
4456 mwl8k_cmd_radio_disable(hw);
4458 ieee80211_stop_queues(hw);
4460 /* Disable interrupts */
4461 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4462 if (priv->irq != -1) {
4463 free_irq(priv->pdev->irq, hw);
4467 /* Stop finalize join worker */
4468 cancel_work_sync(&priv->finalize_join_worker);
4469 cancel_work_sync(&priv->watchdog_ba_handle);
4470 if (priv->beacon_skb != NULL)
4471 dev_kfree_skb(priv->beacon_skb);
4473 /* Stop TX reclaim and RX tasklets. */
4474 tasklet_disable(&priv->poll_tx_task);
4475 tasklet_disable(&priv->poll_rx_task);
4477 /* Return all skbs to mac80211 */
4478 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4479 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4482 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4484 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4485 struct ieee80211_vif *vif)
4487 struct mwl8k_priv *priv = hw->priv;
4488 struct mwl8k_vif *mwl8k_vif;
4489 u32 macids_supported;
4491 struct mwl8k_device_info *di;
4494 * Reject interface creation if sniffer mode is active, as
4495 * STA operation is mutually exclusive with hardware sniffer
4496 * mode. (Sniffer mode is only used on STA firmware.)
4498 if (priv->sniffer_enabled) {
4499 wiphy_info(hw->wiphy,
4500 "unable to create STA interface because sniffer mode is enabled\n");
4504 di = priv->device_info;
4505 switch (vif->type) {
4506 case NL80211_IFTYPE_AP:
4507 if (!priv->ap_fw && di->fw_image_ap) {
4508 /* we must load the ap fw to meet this request */
4509 if (!list_empty(&priv->vif_list))
4511 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4515 macids_supported = priv->ap_macids_supported;
4517 case NL80211_IFTYPE_STATION:
4518 if (priv->ap_fw && di->fw_image_sta) {
4519 /* we must load the sta fw to meet this request */
4520 if (!list_empty(&priv->vif_list))
4522 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4526 macids_supported = priv->sta_macids_supported;
4532 macid = ffs(macids_supported & ~priv->macids_used);
4536 /* Setup driver private area. */
4537 mwl8k_vif = MWL8K_VIF(vif);
4538 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4539 mwl8k_vif->vif = vif;
4540 mwl8k_vif->macid = macid;
4541 mwl8k_vif->seqno = 0;
4542 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4543 mwl8k_vif->is_hw_crypto_enabled = false;
4545 /* Set the mac address. */
4546 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4549 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4551 priv->macids_used |= 1 << mwl8k_vif->macid;
4552 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4557 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4559 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4560 if (!priv->macids_used)
4563 priv->macids_used &= ~(1 << vif->macid);
4564 list_del(&vif->list);
4567 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4568 struct ieee80211_vif *vif)
4570 struct mwl8k_priv *priv = hw->priv;
4571 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4574 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4576 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4578 mwl8k_remove_vif(priv, mwl8k_vif);
4581 static void mwl8k_hw_restart_work(struct work_struct *work)
4583 struct mwl8k_priv *priv =
4584 container_of(work, struct mwl8k_priv, fw_reload);
4585 struct ieee80211_hw *hw = priv->hw;
4586 struct mwl8k_device_info *di;
4589 /* If some command is waiting for a response, clear it */
4590 if (priv->hostcmd_wait != NULL) {
4591 complete(priv->hostcmd_wait);
4592 priv->hostcmd_wait = NULL;
4595 priv->hw_restart_owner = current;
4596 di = priv->device_info;
4600 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4602 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4607 priv->hw_restart_owner = NULL;
4608 priv->hw_restart_in_progress = false;
4611 * This unlock will wake up the queues and
4612 * also opens the command path for other
4615 mwl8k_fw_unlock(hw);
4617 ieee80211_restart_hw(hw);
4619 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4623 mwl8k_fw_unlock(hw);
4625 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4628 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4630 struct ieee80211_conf *conf = &hw->conf;
4631 struct mwl8k_priv *priv = hw->priv;
4634 if (conf->flags & IEEE80211_CONF_IDLE) {
4635 mwl8k_cmd_radio_disable(hw);
4639 rc = mwl8k_fw_lock(hw);
4643 rc = mwl8k_cmd_radio_enable(hw);
4647 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4651 if (conf->power_level > 18)
4652 conf->power_level = 18;
4656 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4657 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4662 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
4664 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
4665 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
4667 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
4670 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4673 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4677 mwl8k_fw_unlock(hw);
4683 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4684 struct ieee80211_bss_conf *info, u32 changed)
4686 struct mwl8k_priv *priv = hw->priv;
4687 u32 ap_legacy_rates = 0;
4688 u8 ap_mcs_rates[16];
4691 if (mwl8k_fw_lock(hw))
4695 * No need to capture a beacon if we're no longer associated.
4697 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4698 priv->capture_beacon = false;
4701 * Get the AP's legacy and MCS rates.
4703 if (vif->bss_conf.assoc) {
4704 struct ieee80211_sta *ap;
4708 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
4714 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) {
4715 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
4718 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4720 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
4725 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) {
4726 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
4730 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
4735 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4736 rc = mwl8k_set_radio_preamble(hw,
4737 vif->bss_conf.use_short_preamble);
4742 if (changed & BSS_CHANGED_ERP_SLOT) {
4743 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
4748 if (vif->bss_conf.assoc &&
4749 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
4751 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
4756 if (vif->bss_conf.assoc &&
4757 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
4759 * Finalize the join. Tell rx handler to process
4760 * next beacon from our BSSID.
4762 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
4763 priv->capture_beacon = true;
4767 mwl8k_fw_unlock(hw);
4771 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4772 struct ieee80211_bss_conf *info, u32 changed)
4776 if (mwl8k_fw_lock(hw))
4779 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
4780 rc = mwl8k_set_radio_preamble(hw,
4781 vif->bss_conf.use_short_preamble);
4786 if (changed & BSS_CHANGED_BASIC_RATES) {
4791 * Use lowest supported basic rate for multicasts
4792 * and management frames (such as probe responses --
4793 * beacons will always go out at 1 Mb/s).
4795 idx = ffs(vif->bss_conf.basic_rates);
4799 if (hw->conf.channel->band == IEEE80211_BAND_2GHZ)
4800 rate = mwl8k_rates_24[idx].hw_value;
4802 rate = mwl8k_rates_50[idx].hw_value;
4804 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
4807 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
4808 struct sk_buff *skb;
4810 skb = ieee80211_beacon_get(hw, vif);
4812 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
4817 if (changed & BSS_CHANGED_BEACON_ENABLED)
4818 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
4821 mwl8k_fw_unlock(hw);
4825 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4826 struct ieee80211_bss_conf *info, u32 changed)
4828 struct mwl8k_priv *priv = hw->priv;
4831 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
4833 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
4836 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
4837 struct netdev_hw_addr_list *mc_list)
4839 struct mwl8k_cmd_pkt *cmd;
4842 * Synthesize and return a command packet that programs the
4843 * hardware multicast address filter. At this point we don't
4844 * know whether FIF_ALLMULTI is being requested, but if it is,
4845 * we'll end up throwing this packet away and creating a new
4846 * one in mwl8k_configure_filter().
4848 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
4850 return (unsigned long)cmd;
4854 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
4855 unsigned int changed_flags,
4856 unsigned int *total_flags)
4858 struct mwl8k_priv *priv = hw->priv;
4861 * Hardware sniffer mode is mutually exclusive with STA
4862 * operation, so refuse to enable sniffer mode if a STA
4863 * interface is active.
4865 if (!list_empty(&priv->vif_list)) {
4866 if (net_ratelimit())
4867 wiphy_info(hw->wiphy,
4868 "not enabling sniffer mode because STA interface is active\n");
4872 if (!priv->sniffer_enabled) {
4873 if (mwl8k_cmd_enable_sniffer(hw, 1))
4875 priv->sniffer_enabled = true;
4878 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
4879 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
4885 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
4887 if (!list_empty(&priv->vif_list))
4888 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
4893 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
4894 unsigned int changed_flags,
4895 unsigned int *total_flags,
4898 struct mwl8k_priv *priv = hw->priv;
4899 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
4902 * AP firmware doesn't allow fine-grained control over
4903 * the receive filter.
4906 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4912 * Enable hardware sniffer mode if FIF_CONTROL or
4913 * FIF_OTHER_BSS is requested.
4915 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
4916 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
4921 /* Clear unsupported feature flags */
4922 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
4924 if (mwl8k_fw_lock(hw)) {
4929 if (priv->sniffer_enabled) {
4930 mwl8k_cmd_enable_sniffer(hw, 0);
4931 priv->sniffer_enabled = false;
4934 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
4935 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
4937 * Disable the BSS filter.
4939 mwl8k_cmd_set_pre_scan(hw);
4941 struct mwl8k_vif *mwl8k_vif;
4945 * Enable the BSS filter.
4947 * If there is an active STA interface, use that
4948 * interface's BSSID, otherwise use a dummy one
4949 * (where the OUI part needs to be nonzero for
4950 * the BSSID to be accepted by POST_SCAN).
4952 mwl8k_vif = mwl8k_first_vif(priv);
4953 if (mwl8k_vif != NULL)
4954 bssid = mwl8k_vif->vif->bss_conf.bssid;
4956 bssid = "\x01\x00\x00\x00\x00\x00";
4958 mwl8k_cmd_set_post_scan(hw, bssid);
4963 * If FIF_ALLMULTI is being requested, throw away the command
4964 * packet that ->prepare_multicast() built and replace it with
4965 * a command packet that enables reception of all multicast
4968 if (*total_flags & FIF_ALLMULTI) {
4970 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
4974 mwl8k_post_cmd(hw, cmd);
4978 mwl8k_fw_unlock(hw);
4981 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
4983 return mwl8k_cmd_set_rts_threshold(hw, value);
4986 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
4987 struct ieee80211_vif *vif,
4988 struct ieee80211_sta *sta)
4990 struct mwl8k_priv *priv = hw->priv;
4993 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
4995 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
4998 static int mwl8k_sta_add(struct ieee80211_hw *hw,
4999 struct ieee80211_vif *vif,
5000 struct ieee80211_sta *sta)
5002 struct mwl8k_priv *priv = hw->priv;
5005 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5006 struct ieee80211_key_conf *key;
5009 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5011 MWL8K_STA(sta)->peer_id = ret;
5012 if (sta->ht_cap.ht_supported)
5013 MWL8K_STA(sta)->is_ampdu_allowed = true;
5018 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5021 for (i = 0; i < NUM_WEP_KEYS; i++) {
5022 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5023 if (mwl8k_vif->wep_key_conf[i].enabled)
5024 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5029 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5030 struct ieee80211_vif *vif, u16 queue,
5031 const struct ieee80211_tx_queue_params *params)
5033 struct mwl8k_priv *priv = hw->priv;
5036 rc = mwl8k_fw_lock(hw);
5038 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5039 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5041 if (!priv->wmm_enabled)
5042 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5045 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5046 rc = mwl8k_cmd_set_edca_params(hw, q,
5053 mwl8k_fw_unlock(hw);
5059 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5060 struct ieee80211_low_level_stats *stats)
5062 return mwl8k_cmd_get_stat(hw, stats);
5065 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5066 struct survey_info *survey)
5068 struct mwl8k_priv *priv = hw->priv;
5069 struct ieee80211_conf *conf = &hw->conf;
5074 survey->channel = conf->channel;
5075 survey->filled = SURVEY_INFO_NOISE_DBM;
5076 survey->noise = priv->noise;
5081 #define MAX_AMPDU_ATTEMPTS 5
5084 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5085 enum ieee80211_ampdu_mlme_action action,
5086 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5091 struct mwl8k_priv *priv = hw->priv;
5092 struct mwl8k_ampdu_stream *stream;
5093 u8 *addr = sta->addr;
5094 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5096 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5099 spin_lock(&priv->stream_lock);
5100 stream = mwl8k_lookup_stream(hw, addr, tid);
5103 case IEEE80211_AMPDU_RX_START:
5104 case IEEE80211_AMPDU_RX_STOP:
5106 case IEEE80211_AMPDU_TX_START:
5107 /* By the time we get here the hw queues may contain outgoing
5108 * packets for this RA/TID that are not part of this BA
5109 * session. The hw will assign sequence numbers to these
5110 * packets as they go out. So if we query the hw for its next
5111 * sequence number and use that for the SSN here, it may end up
5112 * being wrong, which will lead to sequence number mismatch at
5113 * the recipient. To avoid this, we reset the sequence number
5114 * to O for the first MPDU in this BA stream.
5117 if (stream == NULL) {
5118 /* This means that somebody outside this driver called
5119 * ieee80211_start_tx_ba_session. This is unexpected
5120 * because we do our own rate control. Just warn and
5123 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5124 "Proceeding anyway.\n", __func__);
5125 stream = mwl8k_add_stream(hw, sta, tid);
5127 if (stream == NULL) {
5128 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5132 stream->state = AMPDU_STREAM_IN_PROGRESS;
5134 /* Release the lock before we do the time consuming stuff */
5135 spin_unlock(&priv->stream_lock);
5136 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5138 /* Check if link is still valid */
5139 if (!sta_info->is_ampdu_allowed) {
5140 spin_lock(&priv->stream_lock);
5141 mwl8k_remove_stream(hw, stream);
5142 spin_unlock(&priv->stream_lock);
5146 rc = mwl8k_check_ba(hw, stream, vif);
5148 /* If HW restart is in progress mwl8k_post_cmd will
5149 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5152 if (!rc || rc == -EBUSY)
5155 * HW queues take time to be flushed, give them
5161 spin_lock(&priv->stream_lock);
5163 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5164 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5165 mwl8k_remove_stream(hw, stream);
5169 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5171 case IEEE80211_AMPDU_TX_STOP_CONT:
5172 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5173 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5175 if (stream->state == AMPDU_STREAM_ACTIVE) {
5176 spin_unlock(&priv->stream_lock);
5177 mwl8k_destroy_ba(hw, stream);
5178 spin_lock(&priv->stream_lock);
5180 mwl8k_remove_stream(hw, stream);
5182 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5184 case IEEE80211_AMPDU_TX_OPERATIONAL:
5185 BUG_ON(stream == NULL);
5186 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5187 spin_unlock(&priv->stream_lock);
5188 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5189 spin_lock(&priv->stream_lock);
5191 stream->state = AMPDU_STREAM_ACTIVE;
5193 spin_unlock(&priv->stream_lock);
5194 mwl8k_destroy_ba(hw, stream);
5195 spin_lock(&priv->stream_lock);
5196 wiphy_debug(hw->wiphy,
5197 "Failed adding stream for sta %pM tid %d\n",
5199 mwl8k_remove_stream(hw, stream);
5207 spin_unlock(&priv->stream_lock);
5211 static const struct ieee80211_ops mwl8k_ops = {
5213 .start = mwl8k_start,
5215 .add_interface = mwl8k_add_interface,
5216 .remove_interface = mwl8k_remove_interface,
5217 .config = mwl8k_config,
5218 .bss_info_changed = mwl8k_bss_info_changed,
5219 .prepare_multicast = mwl8k_prepare_multicast,
5220 .configure_filter = mwl8k_configure_filter,
5221 .set_key = mwl8k_set_key,
5222 .set_rts_threshold = mwl8k_set_rts_threshold,
5223 .sta_add = mwl8k_sta_add,
5224 .sta_remove = mwl8k_sta_remove,
5225 .conf_tx = mwl8k_conf_tx,
5226 .get_stats = mwl8k_get_stats,
5227 .get_survey = mwl8k_get_survey,
5228 .ampdu_action = mwl8k_ampdu_action,
5231 static void mwl8k_finalize_join_worker(struct work_struct *work)
5233 struct mwl8k_priv *priv =
5234 container_of(work, struct mwl8k_priv, finalize_join_worker);
5235 struct sk_buff *skb = priv->beacon_skb;
5236 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5237 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5238 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5239 mgmt->u.beacon.variable, len);
5240 int dtim_period = 1;
5242 if (tim && tim[1] >= 2)
5243 dtim_period = tim[3];
5245 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5248 priv->beacon_skb = NULL;
5257 #define MWL8K_8366_AP_FW_API 2
5258 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5259 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5261 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5263 .part_name = "88w8363",
5264 .helper_image = "mwl8k/helper_8363.fw",
5265 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5268 .part_name = "88w8687",
5269 .helper_image = "mwl8k/helper_8687.fw",
5270 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5273 .part_name = "88w8366",
5274 .helper_image = "mwl8k/helper_8366.fw",
5275 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5276 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5277 .fw_api_ap = MWL8K_8366_AP_FW_API,
5278 .ap_rxd_ops = &rxd_8366_ap_ops,
5282 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5283 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5284 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5285 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5286 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5287 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5288 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5290 static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = {
5291 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5292 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5293 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5294 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5295 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5296 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5297 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5300 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5302 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5305 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5306 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5307 priv->fw_pref, priv->fw_alt);
5308 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5310 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5311 pci_name(priv->pdev), priv->fw_alt);
5317 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5318 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5320 struct mwl8k_priv *priv = context;
5321 struct mwl8k_device_info *di = priv->device_info;
5324 switch (priv->fw_state) {
5327 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5328 pci_name(priv->pdev), di->helper_image);
5331 priv->fw_helper = fw;
5332 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5334 if (rc && priv->fw_alt) {
5335 rc = mwl8k_request_alt_fw(priv);
5338 priv->fw_state = FW_STATE_LOADING_ALT;
5342 priv->fw_state = FW_STATE_LOADING_PREF;
5345 case FW_STATE_LOADING_PREF:
5348 rc = mwl8k_request_alt_fw(priv);
5351 priv->fw_state = FW_STATE_LOADING_ALT;
5355 priv->fw_ucode = fw;
5356 rc = mwl8k_firmware_load_success(priv);
5360 complete(&priv->firmware_loading_complete);
5364 case FW_STATE_LOADING_ALT:
5366 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5367 pci_name(priv->pdev), di->helper_image);
5370 priv->fw_ucode = fw;
5371 rc = mwl8k_firmware_load_success(priv);
5375 complete(&priv->firmware_loading_complete);
5379 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5380 MWL8K_NAME, priv->fw_state);
5387 priv->fw_state = FW_STATE_ERROR;
5388 complete(&priv->firmware_loading_complete);
5389 device_release_driver(&priv->pdev->dev);
5390 mwl8k_release_firmware(priv);
5393 #define MAX_RESTART_ATTEMPTS 1
5394 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5397 struct mwl8k_priv *priv = hw->priv;
5399 int count = MAX_RESTART_ATTEMPTS;
5402 /* Reset firmware and hardware */
5403 mwl8k_hw_reset(priv);
5405 /* Ask userland hotplug daemon for the device firmware */
5406 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5408 wiphy_err(hw->wiphy, "Firmware files not found\n");
5415 /* Load firmware into hardware */
5416 rc = mwl8k_load_firmware(hw);
5418 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5420 /* Reclaim memory once firmware is successfully loaded */
5421 mwl8k_release_firmware(priv);
5424 /* FW did not start successfully;
5425 * lets try one more time
5428 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5436 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5438 struct mwl8k_priv *priv = hw->priv;
5442 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5443 rc = mwl8k_txq_init(hw, i);
5447 iowrite32(priv->txq[i].txd_dma,
5448 priv->sram + priv->txq_offset[i]);
5453 /* initialize hw after successfully loading a firmware image */
5454 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5456 struct mwl8k_priv *priv = hw->priv;
5461 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5462 if (priv->rxd_ops == NULL) {
5463 wiphy_err(hw->wiphy,
5464 "Driver does not have AP firmware image support for this hardware\n");
5465 goto err_stop_firmware;
5468 priv->rxd_ops = &rxd_sta_ops;
5471 priv->sniffer_enabled = false;
5472 priv->wmm_enabled = false;
5473 priv->pending_tx_pkts = 0;
5475 rc = mwl8k_rxq_init(hw, 0);
5477 goto err_stop_firmware;
5478 rxq_refill(hw, 0, INT_MAX);
5480 /* For the sta firmware, we need to know the dma addresses of tx queues
5481 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5482 * prior to issuing this command. But for the AP case, we learn the
5483 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5484 * case we must initialize the tx queues after.
5486 priv->num_ampdu_queues = 0;
5488 rc = mwl8k_init_txqs(hw);
5490 goto err_free_queues;
5493 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5494 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5495 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5496 MWL8K_A2H_INT_BA_WATCHDOG,
5497 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5498 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5499 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5501 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5502 IRQF_SHARED, MWL8K_NAME, hw);
5504 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5505 goto err_free_queues;
5509 * When hw restart is requested,
5510 * mac80211 will take care of clearing
5511 * the ampdu streams, so do not clear
5512 * the ampdu state here
5514 if (!priv->hw_restart_in_progress)
5515 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5518 * Temporarily enable interrupts. Initial firmware host
5519 * commands use interrupts and avoid polling. Disable
5520 * interrupts when done.
5522 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5524 /* Get config data, mac addrs etc */
5526 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5528 rc = mwl8k_init_txqs(hw);
5530 rc = mwl8k_cmd_set_hw_spec(hw);
5532 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5535 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5539 /* Turn radio off */
5540 rc = mwl8k_cmd_radio_disable(hw);
5542 wiphy_err(hw->wiphy, "Cannot disable\n");
5546 /* Clear MAC address */
5547 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5549 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5553 /* Disable interrupts */
5554 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5555 free_irq(priv->pdev->irq, hw);
5557 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5558 priv->device_info->part_name,
5559 priv->hw_rev, hw->wiphy->perm_addr,
5560 priv->ap_fw ? "AP" : "STA",
5561 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5562 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5567 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5568 free_irq(priv->pdev->irq, hw);
5571 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5572 mwl8k_txq_deinit(hw, i);
5573 mwl8k_rxq_deinit(hw, 0);
5576 mwl8k_hw_reset(priv);
5582 * invoke mwl8k_reload_firmware to change the firmware image after the device
5583 * has already been registered
5585 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5588 struct mwl8k_priv *priv = hw->priv;
5589 struct mwl8k_vif *vif, *tmp_vif;
5592 mwl8k_rxq_deinit(hw, 0);
5595 * All the existing interfaces are re-added by the ieee80211_reconfig;
5596 * which means driver should remove existing interfaces before calling
5597 * ieee80211_restart_hw
5599 if (priv->hw_restart_in_progress)
5600 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
5601 mwl8k_remove_vif(priv, vif);
5603 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5604 mwl8k_txq_deinit(hw, i);
5606 rc = mwl8k_init_firmware(hw, fw_image, false);
5610 rc = mwl8k_probe_hw(hw);
5614 if (priv->hw_restart_in_progress)
5617 rc = mwl8k_start(hw);
5621 rc = mwl8k_config(hw, ~0);
5625 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
5626 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
5634 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
5638 static const struct ieee80211_iface_limit ap_if_limits[] = {
5639 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
5642 static const struct ieee80211_iface_combination ap_if_comb = {
5643 .limits = ap_if_limits,
5644 .n_limits = ARRAY_SIZE(ap_if_limits),
5645 .max_interfaces = 8,
5646 .num_different_channels = 1,
5650 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
5652 struct ieee80211_hw *hw = priv->hw;
5655 rc = mwl8k_load_firmware(hw);
5656 mwl8k_release_firmware(priv);
5658 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5663 * Extra headroom is the size of the required DMA header
5664 * minus the size of the smallest 802.11 frame (CTS frame).
5666 hw->extra_tx_headroom =
5667 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
5669 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
5671 hw->channel_change_time = 10;
5673 hw->queues = MWL8K_TX_WMM_QUEUES;
5675 /* Set rssi values to dBm */
5676 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
5679 * Ask mac80211 to not to trigger PS mode
5680 * based on PM bit of incoming frames.
5683 hw->flags |= IEEE80211_HW_AP_LINK_PS;
5685 hw->vif_data_size = sizeof(struct mwl8k_vif);
5686 hw->sta_data_size = sizeof(struct mwl8k_sta);
5688 priv->macids_used = 0;
5689 INIT_LIST_HEAD(&priv->vif_list);
5691 /* Set default radio state and preamble */
5692 priv->radio_on = false;
5693 priv->radio_short_preamble = false;
5695 /* Finalize join worker */
5696 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
5697 /* Handle watchdog ba events */
5698 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
5699 /* To reload the firmware if it crashes */
5700 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
5702 /* TX reclaim and RX tasklets. */
5703 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
5704 tasklet_disable(&priv->poll_tx_task);
5705 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
5706 tasklet_disable(&priv->poll_rx_task);
5708 /* Power management cookie */
5709 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
5710 if (priv->cookie == NULL)
5713 mutex_init(&priv->fw_mutex);
5714 priv->fw_mutex_owner = NULL;
5715 priv->fw_mutex_depth = 0;
5716 priv->hostcmd_wait = NULL;
5718 spin_lock_init(&priv->tx_lock);
5720 spin_lock_init(&priv->stream_lock);
5722 priv->tx_wait = NULL;
5724 rc = mwl8k_probe_hw(hw);
5726 goto err_free_cookie;
5728 hw->wiphy->interface_modes = 0;
5730 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
5731 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
5732 hw->wiphy->iface_combinations = &ap_if_comb;
5733 hw->wiphy->n_iface_combinations = 1;
5736 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
5737 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
5739 rc = ieee80211_register_hw(hw);
5741 wiphy_err(hw->wiphy, "Cannot register device\n");
5742 goto err_unprobe_hw;
5748 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5749 mwl8k_txq_deinit(hw, i);
5750 mwl8k_rxq_deinit(hw, 0);
5753 if (priv->cookie != NULL)
5754 pci_free_consistent(priv->pdev, 4,
5755 priv->cookie, priv->cookie_dma);
5759 static int mwl8k_probe(struct pci_dev *pdev,
5760 const struct pci_device_id *id)
5762 static int printed_version;
5763 struct ieee80211_hw *hw;
5764 struct mwl8k_priv *priv;
5765 struct mwl8k_device_info *di;
5768 if (!printed_version) {
5769 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
5770 printed_version = 1;
5774 rc = pci_enable_device(pdev);
5776 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
5781 rc = pci_request_regions(pdev, MWL8K_NAME);
5783 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
5785 goto err_disable_device;
5788 pci_set_master(pdev);
5791 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
5793 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
5798 SET_IEEE80211_DEV(hw, &pdev->dev);
5799 pci_set_drvdata(pdev, hw);
5804 priv->device_info = &mwl8k_info_tbl[id->driver_data];
5807 priv->sram = pci_iomap(pdev, 0, 0x10000);
5808 if (priv->sram == NULL) {
5809 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
5814 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
5815 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
5817 priv->regs = pci_iomap(pdev, 1, 0x10000);
5818 if (priv->regs == NULL) {
5819 priv->regs = pci_iomap(pdev, 2, 0x10000);
5820 if (priv->regs == NULL) {
5821 wiphy_err(hw->wiphy, "Cannot map device registers\n");
5827 * Choose the initial fw image depending on user input. If a second
5828 * image is available, make it the alternative image that will be
5829 * loaded if the first one fails.
5831 init_completion(&priv->firmware_loading_complete);
5832 di = priv->device_info;
5833 if (ap_mode_default && di->fw_image_ap) {
5834 priv->fw_pref = di->fw_image_ap;
5835 priv->fw_alt = di->fw_image_sta;
5836 } else if (!ap_mode_default && di->fw_image_sta) {
5837 priv->fw_pref = di->fw_image_sta;
5838 priv->fw_alt = di->fw_image_ap;
5839 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
5840 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
5841 priv->fw_pref = di->fw_image_sta;
5842 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
5843 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
5844 priv->fw_pref = di->fw_image_ap;
5846 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
5848 goto err_stop_firmware;
5850 priv->hw_restart_in_progress = false;
5855 mwl8k_hw_reset(priv);
5858 if (priv->regs != NULL)
5859 pci_iounmap(pdev, priv->regs);
5861 if (priv->sram != NULL)
5862 pci_iounmap(pdev, priv->sram);
5864 pci_set_drvdata(pdev, NULL);
5865 ieee80211_free_hw(hw);
5868 pci_release_regions(pdev);
5871 pci_disable_device(pdev);
5876 static void mwl8k_remove(struct pci_dev *pdev)
5878 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
5879 struct mwl8k_priv *priv;
5886 wait_for_completion(&priv->firmware_loading_complete);
5888 if (priv->fw_state == FW_STATE_ERROR) {
5889 mwl8k_hw_reset(priv);
5893 ieee80211_stop_queues(hw);
5895 ieee80211_unregister_hw(hw);
5897 /* Remove TX reclaim and RX tasklets. */
5898 tasklet_kill(&priv->poll_tx_task);
5899 tasklet_kill(&priv->poll_rx_task);
5902 mwl8k_hw_reset(priv);
5904 /* Return all skbs to mac80211 */
5905 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5906 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
5908 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5909 mwl8k_txq_deinit(hw, i);
5911 mwl8k_rxq_deinit(hw, 0);
5913 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
5916 pci_iounmap(pdev, priv->regs);
5917 pci_iounmap(pdev, priv->sram);
5918 pci_set_drvdata(pdev, NULL);
5919 ieee80211_free_hw(hw);
5920 pci_release_regions(pdev);
5921 pci_disable_device(pdev);
5924 static struct pci_driver mwl8k_driver = {
5926 .id_table = mwl8k_pci_id_table,
5927 .probe = mwl8k_probe,
5928 .remove = mwl8k_remove,
5931 module_pci_driver(mwl8k_driver);
5933 MODULE_DESCRIPTION(MWL8K_DESC);
5934 MODULE_VERSION(MWL8K_VERSION);
5935 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
5936 MODULE_LICENSE("GPL");