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1 | /* | |
2 | * drivers/net/wireless/mwl8k.c | |
3 | * Driver for Marvell TOPDOG 802.11 Wireless cards | |
4 | * | |
5 | * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc. | |
6 | * | |
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. | |
10 | */ | |
11 | ||
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> | |
28 | ||
29 | #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver" | |
30 | #define MWL8K_NAME KBUILD_MODNAME | |
31 | #define MWL8K_VERSION "0.12" | |
32 | ||
33 | /* Module parameters */ | |
34 | static unsigned 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"); | |
38 | ||
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 | |
48 | ||
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) | |
59 | ||
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) | |
77 | ||
78 | /* HW micro second timer register | |
79 | * located at offset 0xA600. This | |
80 | * will be used to timestamp tx | |
81 | * packets. | |
82 | */ | |
83 | ||
84 | #define MWL8K_HW_TIMER_REGISTER 0x0000a600 | |
85 | ||
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) | |
97 | ||
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) | |
103 | ||
104 | struct rxd_ops { | |
105 | int rxd_size; | |
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); | |
110 | }; | |
111 | ||
112 | struct mwl8k_device_info { | |
113 | char *part_name; | |
114 | char *helper_image; | |
115 | char *fw_image_sta; | |
116 | char *fw_image_ap; | |
117 | struct rxd_ops *ap_rxd_ops; | |
118 | u32 fw_api_ap; | |
119 | }; | |
120 | ||
121 | struct mwl8k_rx_queue { | |
122 | int rxd_count; | |
123 | ||
124 | /* hw receives here */ | |
125 | int head; | |
126 | ||
127 | /* refill descs here */ | |
128 | int tail; | |
129 | ||
130 | void *rxd; | |
131 | dma_addr_t rxd_dma; | |
132 | struct { | |
133 | struct sk_buff *skb; | |
134 | DEFINE_DMA_UNMAP_ADDR(dma); | |
135 | } *buf; | |
136 | }; | |
137 | ||
138 | struct mwl8k_tx_queue { | |
139 | /* hw transmits here */ | |
140 | int head; | |
141 | ||
142 | /* sw appends here */ | |
143 | int tail; | |
144 | ||
145 | unsigned int len; | |
146 | struct mwl8k_tx_desc *txd; | |
147 | dma_addr_t txd_dma; | |
148 | struct sk_buff **skb; | |
149 | }; | |
150 | ||
151 | enum { | |
152 | AMPDU_NO_STREAM, | |
153 | AMPDU_STREAM_NEW, | |
154 | AMPDU_STREAM_IN_PROGRESS, | |
155 | AMPDU_STREAM_ACTIVE, | |
156 | }; | |
157 | ||
158 | struct mwl8k_ampdu_stream { | |
159 | struct ieee80211_sta *sta; | |
160 | u8 tid; | |
161 | u8 state; | |
162 | u8 idx; | |
163 | u8 txq_idx; /* index of this stream in priv->txq */ | |
164 | }; | |
165 | ||
166 | struct mwl8k_priv { | |
167 | struct ieee80211_hw *hw; | |
168 | struct pci_dev *pdev; | |
169 | int irq; | |
170 | ||
171 | struct mwl8k_device_info *device_info; | |
172 | ||
173 | void __iomem *sram; | |
174 | void __iomem *regs; | |
175 | ||
176 | /* firmware */ | |
177 | const struct firmware *fw_helper; | |
178 | const struct firmware *fw_ucode; | |
179 | ||
180 | /* hardware/firmware parameters */ | |
181 | bool ap_fw; | |
182 | struct rxd_ops *rxd_ops; | |
183 | struct ieee80211_supported_band band_24; | |
184 | struct ieee80211_channel channels_24[14]; | |
185 | struct ieee80211_rate rates_24[14]; | |
186 | struct ieee80211_supported_band band_50; | |
187 | struct ieee80211_channel channels_50[4]; | |
188 | struct ieee80211_rate rates_50[9]; | |
189 | u32 ap_macids_supported; | |
190 | u32 sta_macids_supported; | |
191 | ||
192 | /* Ampdu stream information */ | |
193 | u8 num_ampdu_queues; | |
194 | spinlock_t stream_lock; | |
195 | struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES]; | |
196 | struct work_struct watchdog_ba_handle; | |
197 | ||
198 | /* firmware access */ | |
199 | struct mutex fw_mutex; | |
200 | struct task_struct *fw_mutex_owner; | |
201 | int fw_mutex_depth; | |
202 | struct completion *hostcmd_wait; | |
203 | ||
204 | /* lock held over TX and TX reap */ | |
205 | spinlock_t tx_lock; | |
206 | ||
207 | /* TX quiesce completion, protected by fw_mutex and tx_lock */ | |
208 | struct completion *tx_wait; | |
209 | ||
210 | /* List of interfaces. */ | |
211 | u32 macids_used; | |
212 | struct list_head vif_list; | |
213 | ||
214 | /* power management status cookie from firmware */ | |
215 | u32 *cookie; | |
216 | dma_addr_t cookie_dma; | |
217 | ||
218 | u16 num_mcaddrs; | |
219 | u8 hw_rev; | |
220 | u32 fw_rev; | |
221 | ||
222 | /* | |
223 | * Running count of TX packets in flight, to avoid | |
224 | * iterating over the transmit rings each time. | |
225 | */ | |
226 | int pending_tx_pkts; | |
227 | ||
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]; | |
231 | ||
232 | bool radio_on; | |
233 | bool radio_short_preamble; | |
234 | bool sniffer_enabled; | |
235 | bool wmm_enabled; | |
236 | ||
237 | /* XXX need to convert this to handle multiple interfaces */ | |
238 | bool capture_beacon; | |
239 | u8 capture_bssid[ETH_ALEN]; | |
240 | struct sk_buff *beacon_skb; | |
241 | ||
242 | /* | |
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 | |
246 | * is checked. | |
247 | */ | |
248 | struct work_struct finalize_join_worker; | |
249 | ||
250 | /* Tasklet to perform TX reclaim. */ | |
251 | struct tasklet_struct poll_tx_task; | |
252 | ||
253 | /* Tasklet to perform RX. */ | |
254 | struct tasklet_struct poll_rx_task; | |
255 | ||
256 | /* Most recently reported noise in dBm */ | |
257 | s8 noise; | |
258 | ||
259 | /* | |
260 | * preserve the queue configurations so they can be restored if/when | |
261 | * the firmware image is swapped. | |
262 | */ | |
263 | struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES]; | |
264 | ||
265 | /* async firmware loading state */ | |
266 | unsigned fw_state; | |
267 | char *fw_pref; | |
268 | char *fw_alt; | |
269 | struct completion firmware_loading_complete; | |
270 | }; | |
271 | ||
272 | #define MAX_WEP_KEY_LEN 13 | |
273 | #define NUM_WEP_KEYS 4 | |
274 | ||
275 | /* Per interface specific private data */ | |
276 | struct mwl8k_vif { | |
277 | struct list_head list; | |
278 | struct ieee80211_vif *vif; | |
279 | ||
280 | /* Firmware macid for this vif. */ | |
281 | int macid; | |
282 | ||
283 | /* Non AMPDU sequence number assigned by driver. */ | |
284 | u16 seqno; | |
285 | ||
286 | /* Saved WEP keys */ | |
287 | struct { | |
288 | u8 enabled; | |
289 | u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN]; | |
290 | } wep_key_conf[NUM_WEP_KEYS]; | |
291 | ||
292 | /* BSSID */ | |
293 | u8 bssid[ETH_ALEN]; | |
294 | ||
295 | /* A flag to indicate is HW crypto is enabled for this bssid */ | |
296 | bool is_hw_crypto_enabled; | |
297 | }; | |
298 | #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) | |
299 | #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8)) | |
300 | ||
301 | struct tx_traffic_info { | |
302 | u32 start_time; | |
303 | u32 pkts; | |
304 | }; | |
305 | ||
306 | #define MWL8K_MAX_TID 8 | |
307 | struct mwl8k_sta { | |
308 | /* Index into station database. Returned by UPDATE_STADB. */ | |
309 | u8 peer_id; | |
310 | u8 is_ampdu_allowed; | |
311 | struct tx_traffic_info tx_stats[MWL8K_MAX_TID]; | |
312 | }; | |
313 | #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv)) | |
314 | ||
315 | static const struct ieee80211_channel mwl8k_channels_24[] = { | |
316 | { .center_freq = 2412, .hw_value = 1, }, | |
317 | { .center_freq = 2417, .hw_value = 2, }, | |
318 | { .center_freq = 2422, .hw_value = 3, }, | |
319 | { .center_freq = 2427, .hw_value = 4, }, | |
320 | { .center_freq = 2432, .hw_value = 5, }, | |
321 | { .center_freq = 2437, .hw_value = 6, }, | |
322 | { .center_freq = 2442, .hw_value = 7, }, | |
323 | { .center_freq = 2447, .hw_value = 8, }, | |
324 | { .center_freq = 2452, .hw_value = 9, }, | |
325 | { .center_freq = 2457, .hw_value = 10, }, | |
326 | { .center_freq = 2462, .hw_value = 11, }, | |
327 | { .center_freq = 2467, .hw_value = 12, }, | |
328 | { .center_freq = 2472, .hw_value = 13, }, | |
329 | { .center_freq = 2484, .hw_value = 14, }, | |
330 | }; | |
331 | ||
332 | static const struct ieee80211_rate mwl8k_rates_24[] = { | |
333 | { .bitrate = 10, .hw_value = 2, }, | |
334 | { .bitrate = 20, .hw_value = 4, }, | |
335 | { .bitrate = 55, .hw_value = 11, }, | |
336 | { .bitrate = 110, .hw_value = 22, }, | |
337 | { .bitrate = 220, .hw_value = 44, }, | |
338 | { .bitrate = 60, .hw_value = 12, }, | |
339 | { .bitrate = 90, .hw_value = 18, }, | |
340 | { .bitrate = 120, .hw_value = 24, }, | |
341 | { .bitrate = 180, .hw_value = 36, }, | |
342 | { .bitrate = 240, .hw_value = 48, }, | |
343 | { .bitrate = 360, .hw_value = 72, }, | |
344 | { .bitrate = 480, .hw_value = 96, }, | |
345 | { .bitrate = 540, .hw_value = 108, }, | |
346 | { .bitrate = 720, .hw_value = 144, }, | |
347 | }; | |
348 | ||
349 | static const struct ieee80211_channel mwl8k_channels_50[] = { | |
350 | { .center_freq = 5180, .hw_value = 36, }, | |
351 | { .center_freq = 5200, .hw_value = 40, }, | |
352 | { .center_freq = 5220, .hw_value = 44, }, | |
353 | { .center_freq = 5240, .hw_value = 48, }, | |
354 | }; | |
355 | ||
356 | static const struct ieee80211_rate mwl8k_rates_50[] = { | |
357 | { .bitrate = 60, .hw_value = 12, }, | |
358 | { .bitrate = 90, .hw_value = 18, }, | |
359 | { .bitrate = 120, .hw_value = 24, }, | |
360 | { .bitrate = 180, .hw_value = 36, }, | |
361 | { .bitrate = 240, .hw_value = 48, }, | |
362 | { .bitrate = 360, .hw_value = 72, }, | |
363 | { .bitrate = 480, .hw_value = 96, }, | |
364 | { .bitrate = 540, .hw_value = 108, }, | |
365 | { .bitrate = 720, .hw_value = 144, }, | |
366 | }; | |
367 | ||
368 | /* Set or get info from Firmware */ | |
369 | #define MWL8K_CMD_GET 0x0000 | |
370 | #define MWL8K_CMD_SET 0x0001 | |
371 | #define MWL8K_CMD_SET_LIST 0x0002 | |
372 | ||
373 | /* Firmware command codes */ | |
374 | #define MWL8K_CMD_CODE_DNLD 0x0001 | |
375 | #define MWL8K_CMD_GET_HW_SPEC 0x0003 | |
376 | #define MWL8K_CMD_SET_HW_SPEC 0x0004 | |
377 | #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 | |
378 | #define MWL8K_CMD_GET_STAT 0x0014 | |
379 | #define MWL8K_CMD_RADIO_CONTROL 0x001c | |
380 | #define MWL8K_CMD_RF_TX_POWER 0x001e | |
381 | #define MWL8K_CMD_TX_POWER 0x001f | |
382 | #define MWL8K_CMD_RF_ANTENNA 0x0020 | |
383 | #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */ | |
384 | #define MWL8K_CMD_SET_PRE_SCAN 0x0107 | |
385 | #define MWL8K_CMD_SET_POST_SCAN 0x0108 | |
386 | #define MWL8K_CMD_SET_RF_CHANNEL 0x010a | |
387 | #define MWL8K_CMD_SET_AID 0x010d | |
388 | #define MWL8K_CMD_SET_RATE 0x0110 | |
389 | #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 | |
390 | #define MWL8K_CMD_RTS_THRESHOLD 0x0113 | |
391 | #define MWL8K_CMD_SET_SLOT 0x0114 | |
392 | #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 | |
393 | #define MWL8K_CMD_SET_WMM_MODE 0x0123 | |
394 | #define MWL8K_CMD_MIMO_CONFIG 0x0125 | |
395 | #define MWL8K_CMD_USE_FIXED_RATE 0x0126 | |
396 | #define MWL8K_CMD_ENABLE_SNIFFER 0x0150 | |
397 | #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */ | |
398 | #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 | |
399 | #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205 | |
400 | #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */ | |
401 | #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */ | |
402 | #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */ | |
403 | #define MWL8K_CMD_UPDATE_STADB 0x1123 | |
404 | #define MWL8K_CMD_BASTREAM 0x1125 | |
405 | ||
406 | static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) | |
407 | { | |
408 | u16 command = le16_to_cpu(cmd); | |
409 | ||
410 | #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ | |
411 | snprintf(buf, bufsize, "%s", #x);\ | |
412 | return buf;\ | |
413 | } while (0) | |
414 | switch (command & ~0x8000) { | |
415 | MWL8K_CMDNAME(CODE_DNLD); | |
416 | MWL8K_CMDNAME(GET_HW_SPEC); | |
417 | MWL8K_CMDNAME(SET_HW_SPEC); | |
418 | MWL8K_CMDNAME(MAC_MULTICAST_ADR); | |
419 | MWL8K_CMDNAME(GET_STAT); | |
420 | MWL8K_CMDNAME(RADIO_CONTROL); | |
421 | MWL8K_CMDNAME(RF_TX_POWER); | |
422 | MWL8K_CMDNAME(TX_POWER); | |
423 | MWL8K_CMDNAME(RF_ANTENNA); | |
424 | MWL8K_CMDNAME(SET_BEACON); | |
425 | MWL8K_CMDNAME(SET_PRE_SCAN); | |
426 | MWL8K_CMDNAME(SET_POST_SCAN); | |
427 | MWL8K_CMDNAME(SET_RF_CHANNEL); | |
428 | MWL8K_CMDNAME(SET_AID); | |
429 | MWL8K_CMDNAME(SET_RATE); | |
430 | MWL8K_CMDNAME(SET_FINALIZE_JOIN); | |
431 | MWL8K_CMDNAME(RTS_THRESHOLD); | |
432 | MWL8K_CMDNAME(SET_SLOT); | |
433 | MWL8K_CMDNAME(SET_EDCA_PARAMS); | |
434 | MWL8K_CMDNAME(SET_WMM_MODE); | |
435 | MWL8K_CMDNAME(MIMO_CONFIG); | |
436 | MWL8K_CMDNAME(USE_FIXED_RATE); | |
437 | MWL8K_CMDNAME(ENABLE_SNIFFER); | |
438 | MWL8K_CMDNAME(SET_MAC_ADDR); | |
439 | MWL8K_CMDNAME(SET_RATEADAPT_MODE); | |
440 | MWL8K_CMDNAME(BSS_START); | |
441 | MWL8K_CMDNAME(SET_NEW_STN); | |
442 | MWL8K_CMDNAME(UPDATE_ENCRYPTION); | |
443 | MWL8K_CMDNAME(UPDATE_STADB); | |
444 | MWL8K_CMDNAME(BASTREAM); | |
445 | MWL8K_CMDNAME(GET_WATCHDOG_BITMAP); | |
446 | default: | |
447 | snprintf(buf, bufsize, "0x%x", cmd); | |
448 | } | |
449 | #undef MWL8K_CMDNAME | |
450 | ||
451 | return buf; | |
452 | } | |
453 | ||
454 | /* Hardware and firmware reset */ | |
455 | static void mwl8k_hw_reset(struct mwl8k_priv *priv) | |
456 | { | |
457 | iowrite32(MWL8K_H2A_INT_RESET, | |
458 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
459 | iowrite32(MWL8K_H2A_INT_RESET, | |
460 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
461 | msleep(20); | |
462 | } | |
463 | ||
464 | /* Release fw image */ | |
465 | static void mwl8k_release_fw(const struct firmware **fw) | |
466 | { | |
467 | if (*fw == NULL) | |
468 | return; | |
469 | release_firmware(*fw); | |
470 | *fw = NULL; | |
471 | } | |
472 | ||
473 | static void mwl8k_release_firmware(struct mwl8k_priv *priv) | |
474 | { | |
475 | mwl8k_release_fw(&priv->fw_ucode); | |
476 | mwl8k_release_fw(&priv->fw_helper); | |
477 | } | |
478 | ||
479 | /* states for asynchronous f/w loading */ | |
480 | static void mwl8k_fw_state_machine(const struct firmware *fw, void *context); | |
481 | enum { | |
482 | FW_STATE_INIT = 0, | |
483 | FW_STATE_LOADING_PREF, | |
484 | FW_STATE_LOADING_ALT, | |
485 | FW_STATE_ERROR, | |
486 | }; | |
487 | ||
488 | /* Request fw image */ | |
489 | static int mwl8k_request_fw(struct mwl8k_priv *priv, | |
490 | const char *fname, const struct firmware **fw, | |
491 | bool nowait) | |
492 | { | |
493 | /* release current image */ | |
494 | if (*fw != NULL) | |
495 | mwl8k_release_fw(fw); | |
496 | ||
497 | if (nowait) | |
498 | return request_firmware_nowait(THIS_MODULE, 1, fname, | |
499 | &priv->pdev->dev, GFP_KERNEL, | |
500 | priv, mwl8k_fw_state_machine); | |
501 | else | |
502 | return request_firmware(fw, fname, &priv->pdev->dev); | |
503 | } | |
504 | ||
505 | static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image, | |
506 | bool nowait) | |
507 | { | |
508 | struct mwl8k_device_info *di = priv->device_info; | |
509 | int rc; | |
510 | ||
511 | if (di->helper_image != NULL) { | |
512 | if (nowait) | |
513 | rc = mwl8k_request_fw(priv, di->helper_image, | |
514 | &priv->fw_helper, true); | |
515 | else | |
516 | rc = mwl8k_request_fw(priv, di->helper_image, | |
517 | &priv->fw_helper, false); | |
518 | if (rc) | |
519 | printk(KERN_ERR "%s: Error requesting helper fw %s\n", | |
520 | pci_name(priv->pdev), di->helper_image); | |
521 | ||
522 | if (rc || nowait) | |
523 | return rc; | |
524 | } | |
525 | ||
526 | if (nowait) { | |
527 | /* | |
528 | * if we get here, no helper image is needed. Skip the | |
529 | * FW_STATE_INIT state. | |
530 | */ | |
531 | priv->fw_state = FW_STATE_LOADING_PREF; | |
532 | rc = mwl8k_request_fw(priv, fw_image, | |
533 | &priv->fw_ucode, | |
534 | true); | |
535 | } else | |
536 | rc = mwl8k_request_fw(priv, fw_image, | |
537 | &priv->fw_ucode, false); | |
538 | if (rc) { | |
539 | printk(KERN_ERR "%s: Error requesting firmware file %s\n", | |
540 | pci_name(priv->pdev), fw_image); | |
541 | mwl8k_release_fw(&priv->fw_helper); | |
542 | return rc; | |
543 | } | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | struct mwl8k_cmd_pkt { | |
549 | __le16 code; | |
550 | __le16 length; | |
551 | __u8 seq_num; | |
552 | __u8 macid; | |
553 | __le16 result; | |
554 | char payload[0]; | |
555 | } __packed; | |
556 | ||
557 | /* | |
558 | * Firmware loading. | |
559 | */ | |
560 | static int | |
561 | mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) | |
562 | { | |
563 | void __iomem *regs = priv->regs; | |
564 | dma_addr_t dma_addr; | |
565 | int loops; | |
566 | ||
567 | dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE); | |
568 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
569 | return -ENOMEM; | |
570 | ||
571 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
572 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
573 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
574 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
575 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
576 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
577 | ||
578 | loops = 1000; | |
579 | do { | |
580 | u32 int_code; | |
581 | ||
582 | int_code = ioread32(regs + MWL8K_HIU_INT_CODE); | |
583 | if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { | |
584 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
585 | break; | |
586 | } | |
587 | ||
588 | cond_resched(); | |
589 | udelay(1); | |
590 | } while (--loops); | |
591 | ||
592 | pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE); | |
593 | ||
594 | return loops ? 0 : -ETIMEDOUT; | |
595 | } | |
596 | ||
597 | static int mwl8k_load_fw_image(struct mwl8k_priv *priv, | |
598 | const u8 *data, size_t length) | |
599 | { | |
600 | struct mwl8k_cmd_pkt *cmd; | |
601 | int done; | |
602 | int rc = 0; | |
603 | ||
604 | cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); | |
605 | if (cmd == NULL) | |
606 | return -ENOMEM; | |
607 | ||
608 | cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); | |
609 | cmd->seq_num = 0; | |
610 | cmd->macid = 0; | |
611 | cmd->result = 0; | |
612 | ||
613 | done = 0; | |
614 | while (length) { | |
615 | int block_size = length > 256 ? 256 : length; | |
616 | ||
617 | memcpy(cmd->payload, data + done, block_size); | |
618 | cmd->length = cpu_to_le16(block_size); | |
619 | ||
620 | rc = mwl8k_send_fw_load_cmd(priv, cmd, | |
621 | sizeof(*cmd) + block_size); | |
622 | if (rc) | |
623 | break; | |
624 | ||
625 | done += block_size; | |
626 | length -= block_size; | |
627 | } | |
628 | ||
629 | if (!rc) { | |
630 | cmd->length = 0; | |
631 | rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); | |
632 | } | |
633 | ||
634 | kfree(cmd); | |
635 | ||
636 | return rc; | |
637 | } | |
638 | ||
639 | static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, | |
640 | const u8 *data, size_t length) | |
641 | { | |
642 | unsigned char *buffer; | |
643 | int may_continue, rc = 0; | |
644 | u32 done, prev_block_size; | |
645 | ||
646 | buffer = kmalloc(1024, GFP_KERNEL); | |
647 | if (buffer == NULL) | |
648 | return -ENOMEM; | |
649 | ||
650 | done = 0; | |
651 | prev_block_size = 0; | |
652 | may_continue = 1000; | |
653 | while (may_continue > 0) { | |
654 | u32 block_size; | |
655 | ||
656 | block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); | |
657 | if (block_size & 1) { | |
658 | block_size &= ~1; | |
659 | may_continue--; | |
660 | } else { | |
661 | done += prev_block_size; | |
662 | length -= prev_block_size; | |
663 | } | |
664 | ||
665 | if (block_size > 1024 || block_size > length) { | |
666 | rc = -EOVERFLOW; | |
667 | break; | |
668 | } | |
669 | ||
670 | if (length == 0) { | |
671 | rc = 0; | |
672 | break; | |
673 | } | |
674 | ||
675 | if (block_size == 0) { | |
676 | rc = -EPROTO; | |
677 | may_continue--; | |
678 | udelay(1); | |
679 | continue; | |
680 | } | |
681 | ||
682 | prev_block_size = block_size; | |
683 | memcpy(buffer, data + done, block_size); | |
684 | ||
685 | rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); | |
686 | if (rc) | |
687 | break; | |
688 | } | |
689 | ||
690 | if (!rc && length != 0) | |
691 | rc = -EREMOTEIO; | |
692 | ||
693 | kfree(buffer); | |
694 | ||
695 | return rc; | |
696 | } | |
697 | ||
698 | static int mwl8k_load_firmware(struct ieee80211_hw *hw) | |
699 | { | |
700 | struct mwl8k_priv *priv = hw->priv; | |
701 | const struct firmware *fw = priv->fw_ucode; | |
702 | int rc; | |
703 | int loops; | |
704 | ||
705 | if (!memcmp(fw->data, "\x01\x00\x00\x00", 4)) { | |
706 | const struct firmware *helper = priv->fw_helper; | |
707 | ||
708 | if (helper == NULL) { | |
709 | printk(KERN_ERR "%s: helper image needed but none " | |
710 | "given\n", pci_name(priv->pdev)); | |
711 | return -EINVAL; | |
712 | } | |
713 | ||
714 | rc = mwl8k_load_fw_image(priv, helper->data, helper->size); | |
715 | if (rc) { | |
716 | printk(KERN_ERR "%s: unable to load firmware " | |
717 | "helper image\n", pci_name(priv->pdev)); | |
718 | return rc; | |
719 | } | |
720 | msleep(20); | |
721 | ||
722 | rc = mwl8k_feed_fw_image(priv, fw->data, fw->size); | |
723 | } else { | |
724 | rc = mwl8k_load_fw_image(priv, fw->data, fw->size); | |
725 | } | |
726 | ||
727 | if (rc) { | |
728 | printk(KERN_ERR "%s: unable to load firmware image\n", | |
729 | pci_name(priv->pdev)); | |
730 | return rc; | |
731 | } | |
732 | ||
733 | iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); | |
734 | ||
735 | loops = 500000; | |
736 | do { | |
737 | u32 ready_code; | |
738 | ||
739 | ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE); | |
740 | if (ready_code == MWL8K_FWAP_READY) { | |
741 | priv->ap_fw = true; | |
742 | break; | |
743 | } else if (ready_code == MWL8K_FWSTA_READY) { | |
744 | priv->ap_fw = false; | |
745 | break; | |
746 | } | |
747 | ||
748 | cond_resched(); | |
749 | udelay(1); | |
750 | } while (--loops); | |
751 | ||
752 | return loops ? 0 : -ETIMEDOUT; | |
753 | } | |
754 | ||
755 | ||
756 | /* DMA header used by firmware and hardware. */ | |
757 | struct mwl8k_dma_data { | |
758 | __le16 fwlen; | |
759 | struct ieee80211_hdr wh; | |
760 | char data[0]; | |
761 | } __packed; | |
762 | ||
763 | /* Routines to add/remove DMA header from skb. */ | |
764 | static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos) | |
765 | { | |
766 | struct mwl8k_dma_data *tr; | |
767 | int hdrlen; | |
768 | ||
769 | tr = (struct mwl8k_dma_data *)skb->data; | |
770 | hdrlen = ieee80211_hdrlen(tr->wh.frame_control); | |
771 | ||
772 | if (hdrlen != sizeof(tr->wh)) { | |
773 | if (ieee80211_is_data_qos(tr->wh.frame_control)) { | |
774 | memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2); | |
775 | *((__le16 *)(tr->data - 2)) = qos; | |
776 | } else { | |
777 | memmove(tr->data - hdrlen, &tr->wh, hdrlen); | |
778 | } | |
779 | } | |
780 | ||
781 | if (hdrlen != sizeof(*tr)) | |
782 | skb_pull(skb, sizeof(*tr) - hdrlen); | |
783 | } | |
784 | ||
785 | #define REDUCED_TX_HEADROOM 8 | |
786 | ||
787 | static void | |
788 | mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb, | |
789 | int head_pad, int tail_pad) | |
790 | { | |
791 | struct ieee80211_hdr *wh; | |
792 | int hdrlen; | |
793 | int reqd_hdrlen; | |
794 | struct mwl8k_dma_data *tr; | |
795 | ||
796 | /* | |
797 | * Add a firmware DMA header; the firmware requires that we | |
798 | * present a 2-byte payload length followed by a 4-address | |
799 | * header (without QoS field), followed (optionally) by any | |
800 | * WEP/ExtIV header (but only filled in for CCMP). | |
801 | */ | |
802 | wh = (struct ieee80211_hdr *)skb->data; | |
803 | ||
804 | hdrlen = ieee80211_hdrlen(wh->frame_control); | |
805 | ||
806 | /* | |
807 | * Check if skb_resize is required because of | |
808 | * tx_headroom adjustment. | |
809 | */ | |
810 | if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts) | |
811 | + REDUCED_TX_HEADROOM))) { | |
812 | if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) { | |
813 | ||
814 | wiphy_err(priv->hw->wiphy, | |
815 | "Failed to reallocate TX buffer\n"); | |
816 | return; | |
817 | } | |
818 | skb->truesize += REDUCED_TX_HEADROOM; | |
819 | } | |
820 | ||
821 | reqd_hdrlen = sizeof(*tr) + head_pad; | |
822 | ||
823 | if (hdrlen != reqd_hdrlen) | |
824 | skb_push(skb, reqd_hdrlen - hdrlen); | |
825 | ||
826 | if (ieee80211_is_data_qos(wh->frame_control)) | |
827 | hdrlen -= IEEE80211_QOS_CTL_LEN; | |
828 | ||
829 | tr = (struct mwl8k_dma_data *)skb->data; | |
830 | if (wh != &tr->wh) | |
831 | memmove(&tr->wh, wh, hdrlen); | |
832 | if (hdrlen != sizeof(tr->wh)) | |
833 | memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen); | |
834 | ||
835 | /* | |
836 | * Firmware length is the length of the fully formed "802.11 | |
837 | * payload". That is, everything except for the 802.11 header. | |
838 | * This includes all crypto material including the MIC. | |
839 | */ | |
840 | tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad); | |
841 | } | |
842 | ||
843 | static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv, | |
844 | struct sk_buff *skb) | |
845 | { | |
846 | struct ieee80211_hdr *wh; | |
847 | struct ieee80211_tx_info *tx_info; | |
848 | struct ieee80211_key_conf *key_conf; | |
849 | int data_pad; | |
850 | int head_pad = 0; | |
851 | ||
852 | wh = (struct ieee80211_hdr *)skb->data; | |
853 | ||
854 | tx_info = IEEE80211_SKB_CB(skb); | |
855 | ||
856 | key_conf = NULL; | |
857 | if (ieee80211_is_data(wh->frame_control)) | |
858 | key_conf = tx_info->control.hw_key; | |
859 | ||
860 | /* | |
861 | * Make sure the packet header is in the DMA header format (4-address | |
862 | * without QoS), and add head & tail padding when HW crypto is enabled. | |
863 | * | |
864 | * We have the following trailer padding requirements: | |
865 | * - WEP: 4 trailer bytes (ICV) | |
866 | * - TKIP: 12 trailer bytes (8 MIC + 4 ICV) | |
867 | * - CCMP: 8 trailer bytes (MIC) | |
868 | */ | |
869 | data_pad = 0; | |
870 | if (key_conf != NULL) { | |
871 | head_pad = key_conf->iv_len; | |
872 | switch (key_conf->cipher) { | |
873 | case WLAN_CIPHER_SUITE_WEP40: | |
874 | case WLAN_CIPHER_SUITE_WEP104: | |
875 | data_pad = 4; | |
876 | break; | |
877 | case WLAN_CIPHER_SUITE_TKIP: | |
878 | data_pad = 12; | |
879 | break; | |
880 | case WLAN_CIPHER_SUITE_CCMP: | |
881 | data_pad = 8; | |
882 | break; | |
883 | } | |
884 | } | |
885 | mwl8k_add_dma_header(priv, skb, head_pad, data_pad); | |
886 | } | |
887 | ||
888 | /* | |
889 | * Packet reception for 88w8366 AP firmware. | |
890 | */ | |
891 | struct mwl8k_rxd_8366_ap { | |
892 | __le16 pkt_len; | |
893 | __u8 sq2; | |
894 | __u8 rate; | |
895 | __le32 pkt_phys_addr; | |
896 | __le32 next_rxd_phys_addr; | |
897 | __le16 qos_control; | |
898 | __le16 htsig2; | |
899 | __le32 hw_rssi_info; | |
900 | __le32 hw_noise_floor_info; | |
901 | __u8 noise_floor; | |
902 | __u8 pad0[3]; | |
903 | __u8 rssi; | |
904 | __u8 rx_status; | |
905 | __u8 channel; | |
906 | __u8 rx_ctrl; | |
907 | } __packed; | |
908 | ||
909 | #define MWL8K_8366_AP_RATE_INFO_MCS_FORMAT 0x80 | |
910 | #define MWL8K_8366_AP_RATE_INFO_40MHZ 0x40 | |
911 | #define MWL8K_8366_AP_RATE_INFO_RATEID(x) ((x) & 0x3f) | |
912 | ||
913 | #define MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST 0x80 | |
914 | ||
915 | /* 8366 AP rx_status bits */ | |
916 | #define MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK 0x80 | |
917 | #define MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF | |
918 | #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02 | |
919 | #define MWL8K_8366_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04 | |
920 | #define MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08 | |
921 | ||
922 | static void mwl8k_rxd_8366_ap_init(void *_rxd, dma_addr_t next_dma_addr) | |
923 | { | |
924 | struct mwl8k_rxd_8366_ap *rxd = _rxd; | |
925 | ||
926 | rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); | |
927 | rxd->rx_ctrl = MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST; | |
928 | } | |
929 | ||
930 | static void mwl8k_rxd_8366_ap_refill(void *_rxd, dma_addr_t addr, int len) | |
931 | { | |
932 | struct mwl8k_rxd_8366_ap *rxd = _rxd; | |
933 | ||
934 | rxd->pkt_len = cpu_to_le16(len); | |
935 | rxd->pkt_phys_addr = cpu_to_le32(addr); | |
936 | wmb(); | |
937 | rxd->rx_ctrl = 0; | |
938 | } | |
939 | ||
940 | static int | |
941 | mwl8k_rxd_8366_ap_process(void *_rxd, struct ieee80211_rx_status *status, | |
942 | __le16 *qos, s8 *noise) | |
943 | { | |
944 | struct mwl8k_rxd_8366_ap *rxd = _rxd; | |
945 | ||
946 | if (!(rxd->rx_ctrl & MWL8K_8366_AP_RX_CTRL_OWNED_BY_HOST)) | |
947 | return -1; | |
948 | rmb(); | |
949 | ||
950 | memset(status, 0, sizeof(*status)); | |
951 | ||
952 | status->signal = -rxd->rssi; | |
953 | *noise = -rxd->noise_floor; | |
954 | ||
955 | if (rxd->rate & MWL8K_8366_AP_RATE_INFO_MCS_FORMAT) { | |
956 | status->flag |= RX_FLAG_HT; | |
957 | if (rxd->rate & MWL8K_8366_AP_RATE_INFO_40MHZ) | |
958 | status->flag |= RX_FLAG_40MHZ; | |
959 | status->rate_idx = MWL8K_8366_AP_RATE_INFO_RATEID(rxd->rate); | |
960 | } else { | |
961 | int i; | |
962 | ||
963 | for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) { | |
964 | if (mwl8k_rates_24[i].hw_value == rxd->rate) { | |
965 | status->rate_idx = i; | |
966 | break; | |
967 | } | |
968 | } | |
969 | } | |
970 | ||
971 | if (rxd->channel > 14) { | |
972 | status->band = IEEE80211_BAND_5GHZ; | |
973 | if (!(status->flag & RX_FLAG_HT)) | |
974 | status->rate_idx -= 5; | |
975 | } else { | |
976 | status->band = IEEE80211_BAND_2GHZ; | |
977 | } | |
978 | status->freq = ieee80211_channel_to_frequency(rxd->channel, | |
979 | status->band); | |
980 | ||
981 | *qos = rxd->qos_control; | |
982 | ||
983 | if ((rxd->rx_status != MWL8K_8366_AP_RXSTAT_GENERAL_DECRYPT_ERR) && | |
984 | (rxd->rx_status & MWL8K_8366_AP_RXSTAT_DECRYPT_ERR_MASK) && | |
985 | (rxd->rx_status & MWL8K_8366_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR)) | |
986 | status->flag |= RX_FLAG_MMIC_ERROR; | |
987 | ||
988 | return le16_to_cpu(rxd->pkt_len); | |
989 | } | |
990 | ||
991 | static struct rxd_ops rxd_8366_ap_ops = { | |
992 | .rxd_size = sizeof(struct mwl8k_rxd_8366_ap), | |
993 | .rxd_init = mwl8k_rxd_8366_ap_init, | |
994 | .rxd_refill = mwl8k_rxd_8366_ap_refill, | |
995 | .rxd_process = mwl8k_rxd_8366_ap_process, | |
996 | }; | |
997 | ||
998 | /* | |
999 | * Packet reception for STA firmware. | |
1000 | */ | |
1001 | struct mwl8k_rxd_sta { | |
1002 | __le16 pkt_len; | |
1003 | __u8 link_quality; | |
1004 | __u8 noise_level; | |
1005 | __le32 pkt_phys_addr; | |
1006 | __le32 next_rxd_phys_addr; | |
1007 | __le16 qos_control; | |
1008 | __le16 rate_info; | |
1009 | __le32 pad0[4]; | |
1010 | __u8 rssi; | |
1011 | __u8 channel; | |
1012 | __le16 pad1; | |
1013 | __u8 rx_ctrl; | |
1014 | __u8 rx_status; | |
1015 | __u8 pad2[2]; | |
1016 | } __packed; | |
1017 | ||
1018 | #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000 | |
1019 | #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3) | |
1020 | #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f) | |
1021 | #define MWL8K_STA_RATE_INFO_40MHZ 0x0004 | |
1022 | #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002 | |
1023 | #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001 | |
1024 | ||
1025 | #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02 | |
1026 | #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04 | |
1027 | /* ICV=0 or MIC=1 */ | |
1028 | #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08 | |
1029 | /* Key is uploaded only in failure case */ | |
1030 | #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30 | |
1031 | ||
1032 | static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr) | |
1033 | { | |
1034 | struct mwl8k_rxd_sta *rxd = _rxd; | |
1035 | ||
1036 | rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr); | |
1037 | rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST; | |
1038 | } | |
1039 | ||
1040 | static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len) | |
1041 | { | |
1042 | struct mwl8k_rxd_sta *rxd = _rxd; | |
1043 | ||
1044 | rxd->pkt_len = cpu_to_le16(len); | |
1045 | rxd->pkt_phys_addr = cpu_to_le32(addr); | |
1046 | wmb(); | |
1047 | rxd->rx_ctrl = 0; | |
1048 | } | |
1049 | ||
1050 | static int | |
1051 | mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status, | |
1052 | __le16 *qos, s8 *noise) | |
1053 | { | |
1054 | struct mwl8k_rxd_sta *rxd = _rxd; | |
1055 | u16 rate_info; | |
1056 | ||
1057 | if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST)) | |
1058 | return -1; | |
1059 | rmb(); | |
1060 | ||
1061 | rate_info = le16_to_cpu(rxd->rate_info); | |
1062 | ||
1063 | memset(status, 0, sizeof(*status)); | |
1064 | ||
1065 | status->signal = -rxd->rssi; | |
1066 | *noise = -rxd->noise_level; | |
1067 | status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info); | |
1068 | status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info); | |
1069 | ||
1070 | if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE) | |
1071 | status->flag |= RX_FLAG_SHORTPRE; | |
1072 | if (rate_info & MWL8K_STA_RATE_INFO_40MHZ) | |
1073 | status->flag |= RX_FLAG_40MHZ; | |
1074 | if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI) | |
1075 | status->flag |= RX_FLAG_SHORT_GI; | |
1076 | if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT) | |
1077 | status->flag |= RX_FLAG_HT; | |
1078 | ||
1079 | if (rxd->channel > 14) { | |
1080 | status->band = IEEE80211_BAND_5GHZ; | |
1081 | if (!(status->flag & RX_FLAG_HT)) | |
1082 | status->rate_idx -= 5; | |
1083 | } else { | |
1084 | status->band = IEEE80211_BAND_2GHZ; | |
1085 | } | |
1086 | status->freq = ieee80211_channel_to_frequency(rxd->channel, | |
1087 | status->band); | |
1088 | ||
1089 | *qos = rxd->qos_control; | |
1090 | if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) && | |
1091 | (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE)) | |
1092 | status->flag |= RX_FLAG_MMIC_ERROR; | |
1093 | ||
1094 | return le16_to_cpu(rxd->pkt_len); | |
1095 | } | |
1096 | ||
1097 | static struct rxd_ops rxd_sta_ops = { | |
1098 | .rxd_size = sizeof(struct mwl8k_rxd_sta), | |
1099 | .rxd_init = mwl8k_rxd_sta_init, | |
1100 | .rxd_refill = mwl8k_rxd_sta_refill, | |
1101 | .rxd_process = mwl8k_rxd_sta_process, | |
1102 | }; | |
1103 | ||
1104 | ||
1105 | #define MWL8K_RX_DESCS 256 | |
1106 | #define MWL8K_RX_MAXSZ 3800 | |
1107 | ||
1108 | static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) | |
1109 | { | |
1110 | struct mwl8k_priv *priv = hw->priv; | |
1111 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
1112 | int size; | |
1113 | int i; | |
1114 | ||
1115 | rxq->rxd_count = 0; | |
1116 | rxq->head = 0; | |
1117 | rxq->tail = 0; | |
1118 | ||
1119 | size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size; | |
1120 | ||
1121 | rxq->rxd = pci_alloc_consistent(priv->pdev, size, &rxq->rxd_dma); | |
1122 | if (rxq->rxd == NULL) { | |
1123 | wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n"); | |
1124 | return -ENOMEM; | |
1125 | } | |
1126 | memset(rxq->rxd, 0, size); | |
1127 | ||
1128 | rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL); | |
1129 | if (rxq->buf == NULL) { | |
1130 | wiphy_err(hw->wiphy, "failed to alloc RX skbuff list\n"); | |
1131 | pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma); | |
1132 | return -ENOMEM; | |
1133 | } | |
1134 | ||
1135 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
1136 | int desc_size; | |
1137 | void *rxd; | |
1138 | int nexti; | |
1139 | dma_addr_t next_dma_addr; | |
1140 | ||
1141 | desc_size = priv->rxd_ops->rxd_size; | |
1142 | rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size); | |
1143 | ||
1144 | nexti = i + 1; | |
1145 | if (nexti == MWL8K_RX_DESCS) | |
1146 | nexti = 0; | |
1147 | next_dma_addr = rxq->rxd_dma + (nexti * desc_size); | |
1148 | ||
1149 | priv->rxd_ops->rxd_init(rxd, next_dma_addr); | |
1150 | } | |
1151 | ||
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) | |
1156 | { | |
1157 | struct mwl8k_priv *priv = hw->priv; | |
1158 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
1159 | int refilled; | |
1160 | ||
1161 | refilled = 0; | |
1162 | while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) { | |
1163 | struct sk_buff *skb; | |
1164 | dma_addr_t addr; | |
1165 | int rx; | |
1166 | void *rxd; | |
1167 | ||
1168 | skb = dev_alloc_skb(MWL8K_RX_MAXSZ); | |
1169 | if (skb == NULL) | |
1170 | break; | |
1171 | ||
1172 | addr = pci_map_single(priv->pdev, skb->data, | |
1173 | MWL8K_RX_MAXSZ, DMA_FROM_DEVICE); | |
1174 | ||
1175 | rxq->rxd_count++; | |
1176 | rx = rxq->tail++; | |
1177 | if (rxq->tail == MWL8K_RX_DESCS) | |
1178 | rxq->tail = 0; | |
1179 | rxq->buf[rx].skb = skb; | |
1180 | dma_unmap_addr_set(&rxq->buf[rx], dma, addr); | |
1181 | ||
1182 | rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size); | |
1183 | priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ); | |
1184 | ||
1185 | refilled++; | |
1186 | } | |
1187 | ||
1188 | return refilled; | |
1189 | } | |
1190 | ||
1191 | /* Must be called only when the card's reception is completely halted */ | |
1192 | static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) | |
1193 | { | |
1194 | struct mwl8k_priv *priv = hw->priv; | |
1195 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
1196 | int i; | |
1197 | ||
1198 | if (rxq->rxd == NULL) | |
1199 | return; | |
1200 | ||
1201 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
1202 | if (rxq->buf[i].skb != NULL) { | |
1203 | pci_unmap_single(priv->pdev, | |
1204 | dma_unmap_addr(&rxq->buf[i], dma), | |
1205 | MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); | |
1206 | dma_unmap_addr_set(&rxq->buf[i], dma, 0); | |
1207 | ||
1208 | kfree_skb(rxq->buf[i].skb); | |
1209 | rxq->buf[i].skb = NULL; | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | kfree(rxq->buf); | |
1214 | rxq->buf = NULL; | |
1215 | ||
1216 | pci_free_consistent(priv->pdev, | |
1217 | MWL8K_RX_DESCS * priv->rxd_ops->rxd_size, | |
1218 | rxq->rxd, rxq->rxd_dma); | |
1219 | rxq->rxd = NULL; | |
1220 | } | |
1221 | ||
1222 | ||
1223 | /* | |
1224 | * Scan a list of BSSIDs to process for finalize join. | |
1225 | * Allows for extension to process multiple BSSIDs. | |
1226 | */ | |
1227 | static inline int | |
1228 | mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) | |
1229 | { | |
1230 | return priv->capture_beacon && | |
1231 | ieee80211_is_beacon(wh->frame_control) && | |
1232 | !compare_ether_addr(wh->addr3, priv->capture_bssid); | |
1233 | } | |
1234 | ||
1235 | static inline void mwl8k_save_beacon(struct ieee80211_hw *hw, | |
1236 | struct sk_buff *skb) | |
1237 | { | |
1238 | struct mwl8k_priv *priv = hw->priv; | |
1239 | ||
1240 | priv->capture_beacon = false; | |
1241 | memset(priv->capture_bssid, 0, ETH_ALEN); | |
1242 | ||
1243 | /* | |
1244 | * Use GFP_ATOMIC as rxq_process is called from | |
1245 | * the primary interrupt handler, memory allocation call | |
1246 | * must not sleep. | |
1247 | */ | |
1248 | priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); | |
1249 | if (priv->beacon_skb != NULL) | |
1250 | ieee80211_queue_work(hw, &priv->finalize_join_worker); | |
1251 | } | |
1252 | ||
1253 | static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list, | |
1254 | u8 *bssid) | |
1255 | { | |
1256 | struct mwl8k_vif *mwl8k_vif; | |
1257 | ||
1258 | list_for_each_entry(mwl8k_vif, | |
1259 | vif_list, list) { | |
1260 | if (memcmp(bssid, mwl8k_vif->bssid, | |
1261 | ETH_ALEN) == 0) | |
1262 | return mwl8k_vif; | |
1263 | } | |
1264 | ||
1265 | return NULL; | |
1266 | } | |
1267 | ||
1268 | static int rxq_process(struct ieee80211_hw *hw, int index, int limit) | |
1269 | { | |
1270 | struct mwl8k_priv *priv = hw->priv; | |
1271 | struct mwl8k_vif *mwl8k_vif = NULL; | |
1272 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
1273 | int processed; | |
1274 | ||
1275 | processed = 0; | |
1276 | while (rxq->rxd_count && limit--) { | |
1277 | struct sk_buff *skb; | |
1278 | void *rxd; | |
1279 | int pkt_len; | |
1280 | struct ieee80211_rx_status status; | |
1281 | struct ieee80211_hdr *wh; | |
1282 | __le16 qos; | |
1283 | ||
1284 | skb = rxq->buf[rxq->head].skb; | |
1285 | if (skb == NULL) | |
1286 | break; | |
1287 | ||
1288 | rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size); | |
1289 | ||
1290 | pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos, | |
1291 | &priv->noise); | |
1292 | if (pkt_len < 0) | |
1293 | break; | |
1294 | ||
1295 | rxq->buf[rxq->head].skb = NULL; | |
1296 | ||
1297 | pci_unmap_single(priv->pdev, | |
1298 | dma_unmap_addr(&rxq->buf[rxq->head], dma), | |
1299 | MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); | |
1300 | dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0); | |
1301 | ||
1302 | rxq->head++; | |
1303 | if (rxq->head == MWL8K_RX_DESCS) | |
1304 | rxq->head = 0; | |
1305 | ||
1306 | rxq->rxd_count--; | |
1307 | ||
1308 | wh = &((struct mwl8k_dma_data *)skb->data)->wh; | |
1309 | ||
1310 | /* | |
1311 | * Check for a pending join operation. Save a | |
1312 | * copy of the beacon and schedule a tasklet to | |
1313 | * send a FINALIZE_JOIN command to the firmware. | |
1314 | */ | |
1315 | if (mwl8k_capture_bssid(priv, (void *)skb->data)) | |
1316 | mwl8k_save_beacon(hw, skb); | |
1317 | ||
1318 | if (ieee80211_has_protected(wh->frame_control)) { | |
1319 | ||
1320 | /* Check if hw crypto has been enabled for | |
1321 | * this bss. If yes, set the status flags | |
1322 | * accordingly | |
1323 | */ | |
1324 | mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list, | |
1325 | wh->addr1); | |
1326 | ||
1327 | if (mwl8k_vif != NULL && | |
1328 | mwl8k_vif->is_hw_crypto_enabled == true) { | |
1329 | /* | |
1330 | * When MMIC ERROR is encountered | |
1331 | * by the firmware, payload is | |
1332 | * dropped and only 32 bytes of | |
1333 | * mwl8k Firmware header is sent | |
1334 | * to the host. | |
1335 | * | |
1336 | * We need to add four bytes of | |
1337 | * key information. In it | |
1338 | * MAC80211 expects keyidx set to | |
1339 | * 0 for triggering Counter | |
1340 | * Measure of MMIC failure. | |
1341 | */ | |
1342 | if (status.flag & RX_FLAG_MMIC_ERROR) { | |
1343 | struct mwl8k_dma_data *tr; | |
1344 | tr = (struct mwl8k_dma_data *)skb->data; | |
1345 | memset((void *)&(tr->data), 0, 4); | |
1346 | pkt_len += 4; | |
1347 | } | |
1348 | ||
1349 | if (!ieee80211_is_auth(wh->frame_control)) | |
1350 | status.flag |= RX_FLAG_IV_STRIPPED | | |
1351 | RX_FLAG_DECRYPTED | | |
1352 | RX_FLAG_MMIC_STRIPPED; | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | skb_put(skb, pkt_len); | |
1357 | mwl8k_remove_dma_header(skb, qos); | |
1358 | memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); | |
1359 | ieee80211_rx_irqsafe(hw, skb); | |
1360 | ||
1361 | processed++; | |
1362 | } | |
1363 | ||
1364 | return processed; | |
1365 | } | |
1366 | ||
1367 | ||
1368 | /* | |
1369 | * Packet transmission. | |
1370 | */ | |
1371 | ||
1372 | #define MWL8K_TXD_STATUS_OK 0x00000001 | |
1373 | #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 | |
1374 | #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 | |
1375 | #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 | |
1376 | #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 | |
1377 | ||
1378 | #define MWL8K_QOS_QLEN_UNSPEC 0xff00 | |
1379 | #define MWL8K_QOS_ACK_POLICY_MASK 0x0060 | |
1380 | #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000 | |
1381 | #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060 | |
1382 | #define MWL8K_QOS_EOSP 0x0010 | |
1383 | ||
1384 | struct mwl8k_tx_desc { | |
1385 | __le32 status; | |
1386 | __u8 data_rate; | |
1387 | __u8 tx_priority; | |
1388 | __le16 qos_control; | |
1389 | __le32 pkt_phys_addr; | |
1390 | __le16 pkt_len; | |
1391 | __u8 dest_MAC_addr[ETH_ALEN]; | |
1392 | __le32 next_txd_phys_addr; | |
1393 | __le32 timestamp; | |
1394 | __le16 rate_info; | |
1395 | __u8 peer_id; | |
1396 | __u8 tx_frag_cnt; | |
1397 | } __packed; | |
1398 | ||
1399 | #define MWL8K_TX_DESCS 128 | |
1400 | ||
1401 | static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) | |
1402 | { | |
1403 | struct mwl8k_priv *priv = hw->priv; | |
1404 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1405 | int size; | |
1406 | int i; | |
1407 | ||
1408 | txq->len = 0; | |
1409 | txq->head = 0; | |
1410 | txq->tail = 0; | |
1411 | ||
1412 | size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); | |
1413 | ||
1414 | txq->txd = pci_alloc_consistent(priv->pdev, size, &txq->txd_dma); | |
1415 | if (txq->txd == NULL) { | |
1416 | wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n"); | |
1417 | return -ENOMEM; | |
1418 | } | |
1419 | memset(txq->txd, 0, size); | |
1420 | ||
1421 | txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL); | |
1422 | if (txq->skb == NULL) { | |
1423 | wiphy_err(hw->wiphy, "failed to alloc TX skbuff list\n"); | |
1424 | pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma); | |
1425 | return -ENOMEM; | |
1426 | } | |
1427 | ||
1428 | for (i = 0; i < MWL8K_TX_DESCS; i++) { | |
1429 | struct mwl8k_tx_desc *tx_desc; | |
1430 | int nexti; | |
1431 | ||
1432 | tx_desc = txq->txd + i; | |
1433 | nexti = (i + 1) % MWL8K_TX_DESCS; | |
1434 | ||
1435 | tx_desc->status = 0; | |
1436 | tx_desc->next_txd_phys_addr = | |
1437 | cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc)); | |
1438 | } | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | static inline void mwl8k_tx_start(struct mwl8k_priv *priv) | |
1444 | { | |
1445 | iowrite32(MWL8K_H2A_INT_PPA_READY, | |
1446 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1447 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
1448 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1449 | ioread32(priv->regs + MWL8K_HIU_INT_CODE); | |
1450 | } | |
1451 | ||
1452 | static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw) | |
1453 | { | |
1454 | struct mwl8k_priv *priv = hw->priv; | |
1455 | int i; | |
1456 | ||
1457 | for (i = 0; i < mwl8k_tx_queues(priv); i++) { | |
1458 | struct mwl8k_tx_queue *txq = priv->txq + i; | |
1459 | int fw_owned = 0; | |
1460 | int drv_owned = 0; | |
1461 | int unused = 0; | |
1462 | int desc; | |
1463 | ||
1464 | for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { | |
1465 | struct mwl8k_tx_desc *tx_desc = txq->txd + desc; | |
1466 | u32 status; | |
1467 | ||
1468 | status = le32_to_cpu(tx_desc->status); | |
1469 | if (status & MWL8K_TXD_STATUS_FW_OWNED) | |
1470 | fw_owned++; | |
1471 | else | |
1472 | drv_owned++; | |
1473 | ||
1474 | if (tx_desc->pkt_len == 0) | |
1475 | unused++; | |
1476 | } | |
1477 | ||
1478 | wiphy_err(hw->wiphy, | |
1479 | "txq[%d] len=%d head=%d tail=%d " | |
1480 | "fw_owned=%d drv_owned=%d unused=%d\n", | |
1481 | i, | |
1482 | txq->len, txq->head, txq->tail, | |
1483 | fw_owned, drv_owned, unused); | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | /* | |
1488 | * Must be called with priv->fw_mutex held and tx queues stopped. | |
1489 | */ | |
1490 | #define MWL8K_TX_WAIT_TIMEOUT_MS 5000 | |
1491 | ||
1492 | static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) | |
1493 | { | |
1494 | struct mwl8k_priv *priv = hw->priv; | |
1495 | DECLARE_COMPLETION_ONSTACK(tx_wait); | |
1496 | int retry; | |
1497 | int rc; | |
1498 | ||
1499 | might_sleep(); | |
1500 | ||
1501 | /* | |
1502 | * The TX queues are stopped at this point, so this test | |
1503 | * doesn't need to take ->tx_lock. | |
1504 | */ | |
1505 | if (!priv->pending_tx_pkts) | |
1506 | return 0; | |
1507 | ||
1508 | retry = 0; | |
1509 | rc = 0; | |
1510 | ||
1511 | spin_lock_bh(&priv->tx_lock); | |
1512 | priv->tx_wait = &tx_wait; | |
1513 | while (!rc) { | |
1514 | int oldcount; | |
1515 | unsigned long timeout; | |
1516 | ||
1517 | oldcount = priv->pending_tx_pkts; | |
1518 | ||
1519 | spin_unlock_bh(&priv->tx_lock); | |
1520 | timeout = wait_for_completion_timeout(&tx_wait, | |
1521 | msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS)); | |
1522 | spin_lock_bh(&priv->tx_lock); | |
1523 | ||
1524 | if (timeout) { | |
1525 | WARN_ON(priv->pending_tx_pkts); | |
1526 | if (retry) | |
1527 | wiphy_notice(hw->wiphy, "tx rings drained\n"); | |
1528 | break; | |
1529 | } | |
1530 | ||
1531 | if (priv->pending_tx_pkts < oldcount) { | |
1532 | wiphy_notice(hw->wiphy, | |
1533 | "waiting for tx rings to drain (%d -> %d pkts)\n", | |
1534 | oldcount, priv->pending_tx_pkts); | |
1535 | retry = 1; | |
1536 | continue; | |
1537 | } | |
1538 | ||
1539 | priv->tx_wait = NULL; | |
1540 | ||
1541 | wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n", | |
1542 | MWL8K_TX_WAIT_TIMEOUT_MS); | |
1543 | mwl8k_dump_tx_rings(hw); | |
1544 | ||
1545 | rc = -ETIMEDOUT; | |
1546 | } | |
1547 | spin_unlock_bh(&priv->tx_lock); | |
1548 | ||
1549 | return rc; | |
1550 | } | |
1551 | ||
1552 | #define MWL8K_TXD_SUCCESS(status) \ | |
1553 | ((status) & (MWL8K_TXD_STATUS_OK | \ | |
1554 | MWL8K_TXD_STATUS_OK_RETRY | \ | |
1555 | MWL8K_TXD_STATUS_OK_MORE_RETRY)) | |
1556 | ||
1557 | static int mwl8k_tid_queue_mapping(u8 tid) | |
1558 | { | |
1559 | BUG_ON(tid > 7); | |
1560 | ||
1561 | switch (tid) { | |
1562 | case 0: | |
1563 | case 3: | |
1564 | return IEEE80211_AC_BE; | |
1565 | break; | |
1566 | case 1: | |
1567 | case 2: | |
1568 | return IEEE80211_AC_BK; | |
1569 | break; | |
1570 | case 4: | |
1571 | case 5: | |
1572 | return IEEE80211_AC_VI; | |
1573 | break; | |
1574 | case 6: | |
1575 | case 7: | |
1576 | return IEEE80211_AC_VO; | |
1577 | break; | |
1578 | default: | |
1579 | return -1; | |
1580 | break; | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | /* The firmware will fill in the rate information | |
1585 | * for each packet that gets queued in the hardware | |
1586 | * and these macros will interpret that info. | |
1587 | */ | |
1588 | ||
1589 | #define RI_FORMAT(a) (a & 0x0001) | |
1590 | #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3) | |
1591 | ||
1592 | static int | |
1593 | mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force) | |
1594 | { | |
1595 | struct mwl8k_priv *priv = hw->priv; | |
1596 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1597 | int processed; | |
1598 | ||
1599 | processed = 0; | |
1600 | while (txq->len > 0 && limit--) { | |
1601 | int tx; | |
1602 | struct mwl8k_tx_desc *tx_desc; | |
1603 | unsigned long addr; | |
1604 | int size; | |
1605 | struct sk_buff *skb; | |
1606 | struct ieee80211_tx_info *info; | |
1607 | u32 status; | |
1608 | struct ieee80211_sta *sta; | |
1609 | struct mwl8k_sta *sta_info = NULL; | |
1610 | u16 rate_info; | |
1611 | struct ieee80211_hdr *wh; | |
1612 | ||
1613 | tx = txq->head; | |
1614 | tx_desc = txq->txd + tx; | |
1615 | ||
1616 | status = le32_to_cpu(tx_desc->status); | |
1617 | ||
1618 | if (status & MWL8K_TXD_STATUS_FW_OWNED) { | |
1619 | if (!force) | |
1620 | break; | |
1621 | tx_desc->status &= | |
1622 | ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); | |
1623 | } | |
1624 | ||
1625 | txq->head = (tx + 1) % MWL8K_TX_DESCS; | |
1626 | BUG_ON(txq->len == 0); | |
1627 | txq->len--; | |
1628 | priv->pending_tx_pkts--; | |
1629 | ||
1630 | addr = le32_to_cpu(tx_desc->pkt_phys_addr); | |
1631 | size = le16_to_cpu(tx_desc->pkt_len); | |
1632 | skb = txq->skb[tx]; | |
1633 | txq->skb[tx] = NULL; | |
1634 | ||
1635 | BUG_ON(skb == NULL); | |
1636 | pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE); | |
1637 | ||
1638 | mwl8k_remove_dma_header(skb, tx_desc->qos_control); | |
1639 | ||
1640 | wh = (struct ieee80211_hdr *) skb->data; | |
1641 | ||
1642 | /* Mark descriptor as unused */ | |
1643 | tx_desc->pkt_phys_addr = 0; | |
1644 | tx_desc->pkt_len = 0; | |
1645 | ||
1646 | info = IEEE80211_SKB_CB(skb); | |
1647 | if (ieee80211_is_data(wh->frame_control)) { | |
1648 | sta = info->control.sta; | |
1649 | if (sta) { | |
1650 | sta_info = MWL8K_STA(sta); | |
1651 | BUG_ON(sta_info == NULL); | |
1652 | rate_info = le16_to_cpu(tx_desc->rate_info); | |
1653 | /* If rate is < 6.5 Mpbs for an ht station | |
1654 | * do not form an ampdu. If the station is a | |
1655 | * legacy station (format = 0), do not form an | |
1656 | * ampdu | |
1657 | */ | |
1658 | if (RI_RATE_ID_MCS(rate_info) < 1 || | |
1659 | RI_FORMAT(rate_info) == 0) { | |
1660 | sta_info->is_ampdu_allowed = false; | |
1661 | } else { | |
1662 | sta_info->is_ampdu_allowed = true; | |
1663 | } | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | ieee80211_tx_info_clear_status(info); | |
1668 | ||
1669 | /* Rate control is happening in the firmware. | |
1670 | * Ensure no tx rate is being reported. | |
1671 | */ | |
1672 | info->status.rates[0].idx = -1; | |
1673 | info->status.rates[0].count = 1; | |
1674 | ||
1675 | if (MWL8K_TXD_SUCCESS(status)) | |
1676 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1677 | ||
1678 | ieee80211_tx_status_irqsafe(hw, skb); | |
1679 | ||
1680 | processed++; | |
1681 | } | |
1682 | ||
1683 | return processed; | |
1684 | } | |
1685 | ||
1686 | /* must be called only when the card's transmit is completely halted */ | |
1687 | static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) | |
1688 | { | |
1689 | struct mwl8k_priv *priv = hw->priv; | |
1690 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1691 | ||
1692 | if (txq->txd == NULL) | |
1693 | return; | |
1694 | ||
1695 | mwl8k_txq_reclaim(hw, index, INT_MAX, 1); | |
1696 | ||
1697 | kfree(txq->skb); | |
1698 | txq->skb = NULL; | |
1699 | ||
1700 | pci_free_consistent(priv->pdev, | |
1701 | MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), | |
1702 | txq->txd, txq->txd_dma); | |
1703 | txq->txd = NULL; | |
1704 | } | |
1705 | ||
1706 | /* caller must hold priv->stream_lock when calling the stream functions */ | |
1707 | static struct mwl8k_ampdu_stream * | |
1708 | mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid) | |
1709 | { | |
1710 | struct mwl8k_ampdu_stream *stream; | |
1711 | struct mwl8k_priv *priv = hw->priv; | |
1712 | int i; | |
1713 | ||
1714 | for (i = 0; i < priv->num_ampdu_queues; i++) { | |
1715 | stream = &priv->ampdu[i]; | |
1716 | if (stream->state == AMPDU_NO_STREAM) { | |
1717 | stream->sta = sta; | |
1718 | stream->state = AMPDU_STREAM_NEW; | |
1719 | stream->tid = tid; | |
1720 | stream->idx = i; | |
1721 | stream->txq_idx = MWL8K_TX_WMM_QUEUES + i; | |
1722 | wiphy_debug(hw->wiphy, "Added a new stream for %pM %d", | |
1723 | sta->addr, tid); | |
1724 | return stream; | |
1725 | } | |
1726 | } | |
1727 | return NULL; | |
1728 | } | |
1729 | ||
1730 | static int | |
1731 | mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) | |
1732 | { | |
1733 | int ret; | |
1734 | ||
1735 | /* if the stream has already been started, don't start it again */ | |
1736 | if (stream->state != AMPDU_STREAM_NEW) | |
1737 | return 0; | |
1738 | ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0); | |
1739 | if (ret) | |
1740 | wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: " | |
1741 | "%d\n", stream->sta->addr, stream->tid, ret); | |
1742 | else | |
1743 | wiphy_debug(hw->wiphy, "Started stream for %pM %d\n", | |
1744 | stream->sta->addr, stream->tid); | |
1745 | return ret; | |
1746 | } | |
1747 | ||
1748 | static void | |
1749 | mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) | |
1750 | { | |
1751 | wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr, | |
1752 | stream->tid); | |
1753 | memset(stream, 0, sizeof(*stream)); | |
1754 | } | |
1755 | ||
1756 | static struct mwl8k_ampdu_stream * | |
1757 | mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid) | |
1758 | { | |
1759 | struct mwl8k_priv *priv = hw->priv; | |
1760 | int i; | |
1761 | ||
1762 | for (i = 0 ; i < priv->num_ampdu_queues; i++) { | |
1763 | struct mwl8k_ampdu_stream *stream; | |
1764 | stream = &priv->ampdu[i]; | |
1765 | if (stream->state == AMPDU_NO_STREAM) | |
1766 | continue; | |
1767 | if (!memcmp(stream->sta->addr, addr, ETH_ALEN) && | |
1768 | stream->tid == tid) | |
1769 | return stream; | |
1770 | } | |
1771 | return NULL; | |
1772 | } | |
1773 | ||
1774 | #define MWL8K_AMPDU_PACKET_THRESHOLD 64 | |
1775 | static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid) | |
1776 | { | |
1777 | struct mwl8k_sta *sta_info = MWL8K_STA(sta); | |
1778 | struct tx_traffic_info *tx_stats; | |
1779 | ||
1780 | BUG_ON(tid >= MWL8K_MAX_TID); | |
1781 | tx_stats = &sta_info->tx_stats[tid]; | |
1782 | ||
1783 | return sta_info->is_ampdu_allowed && | |
1784 | tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD; | |
1785 | } | |
1786 | ||
1787 | static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid) | |
1788 | { | |
1789 | struct mwl8k_sta *sta_info = MWL8K_STA(sta); | |
1790 | struct tx_traffic_info *tx_stats; | |
1791 | ||
1792 | BUG_ON(tid >= MWL8K_MAX_TID); | |
1793 | tx_stats = &sta_info->tx_stats[tid]; | |
1794 | ||
1795 | if (tx_stats->start_time == 0) | |
1796 | tx_stats->start_time = jiffies; | |
1797 | ||
1798 | /* reset the packet count after each second elapses. If the number of | |
1799 | * packets ever exceeds the ampdu_min_traffic threshold, we will allow | |
1800 | * an ampdu stream to be started. | |
1801 | */ | |
1802 | if (jiffies - tx_stats->start_time > HZ) { | |
1803 | tx_stats->pkts = 0; | |
1804 | tx_stats->start_time = 0; | |
1805 | } else | |
1806 | tx_stats->pkts++; | |
1807 | } | |
1808 | ||
1809 | static void | |
1810 | mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) | |
1811 | { | |
1812 | struct mwl8k_priv *priv = hw->priv; | |
1813 | struct ieee80211_tx_info *tx_info; | |
1814 | struct mwl8k_vif *mwl8k_vif; | |
1815 | struct ieee80211_sta *sta; | |
1816 | struct ieee80211_hdr *wh; | |
1817 | struct mwl8k_tx_queue *txq; | |
1818 | struct mwl8k_tx_desc *tx; | |
1819 | dma_addr_t dma; | |
1820 | u32 txstatus; | |
1821 | u8 txdatarate; | |
1822 | u16 qos; | |
1823 | int txpriority; | |
1824 | u8 tid = 0; | |
1825 | struct mwl8k_ampdu_stream *stream = NULL; | |
1826 | bool start_ba_session = false; | |
1827 | bool mgmtframe = false; | |
1828 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; | |
1829 | ||
1830 | wh = (struct ieee80211_hdr *)skb->data; | |
1831 | if (ieee80211_is_data_qos(wh->frame_control)) | |
1832 | qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); | |
1833 | else | |
1834 | qos = 0; | |
1835 | ||
1836 | if (ieee80211_is_mgmt(wh->frame_control)) | |
1837 | mgmtframe = true; | |
1838 | ||
1839 | if (priv->ap_fw) | |
1840 | mwl8k_encapsulate_tx_frame(priv, skb); | |
1841 | else | |
1842 | mwl8k_add_dma_header(priv, skb, 0, 0); | |
1843 | ||
1844 | wh = &((struct mwl8k_dma_data *)skb->data)->wh; | |
1845 | ||
1846 | tx_info = IEEE80211_SKB_CB(skb); | |
1847 | sta = tx_info->control.sta; | |
1848 | mwl8k_vif = MWL8K_VIF(tx_info->control.vif); | |
1849 | ||
1850 | if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
1851 | wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
1852 | wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno); | |
1853 | mwl8k_vif->seqno += 0x10; | |
1854 | } | |
1855 | ||
1856 | /* Setup firmware control bit fields for each frame type. */ | |
1857 | txstatus = 0; | |
1858 | txdatarate = 0; | |
1859 | if (ieee80211_is_mgmt(wh->frame_control) || | |
1860 | ieee80211_is_ctl(wh->frame_control)) { | |
1861 | txdatarate = 0; | |
1862 | qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP; | |
1863 | } else if (ieee80211_is_data(wh->frame_control)) { | |
1864 | txdatarate = 1; | |
1865 | if (is_multicast_ether_addr(wh->addr1)) | |
1866 | txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; | |
1867 | ||
1868 | qos &= ~MWL8K_QOS_ACK_POLICY_MASK; | |
1869 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) | |
1870 | qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK; | |
1871 | else | |
1872 | qos |= MWL8K_QOS_ACK_POLICY_NORMAL; | |
1873 | } | |
1874 | ||
1875 | /* Queue ADDBA request in the respective data queue. While setting up | |
1876 | * the ampdu stream, mac80211 queues further packets for that | |
1877 | * particular ra/tid pair. However, packets piled up in the hardware | |
1878 | * for that ra/tid pair will still go out. ADDBA request and the | |
1879 | * related data packets going out from different queues asynchronously | |
1880 | * will cause a shift in the receiver window which might result in | |
1881 | * ampdu packets getting dropped at the receiver after the stream has | |
1882 | * been setup. | |
1883 | */ | |
1884 | if (unlikely(ieee80211_is_action(wh->frame_control) && | |
1885 | mgmt->u.action.category == WLAN_CATEGORY_BACK && | |
1886 | mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ && | |
1887 | priv->ap_fw)) { | |
1888 | u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab); | |
1889 | tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2; | |
1890 | index = mwl8k_tid_queue_mapping(tid); | |
1891 | } | |
1892 | ||
1893 | txpriority = index; | |
1894 | ||
1895 | if (priv->ap_fw && sta && sta->ht_cap.ht_supported | |
1896 | && skb->protocol != cpu_to_be16(ETH_P_PAE) | |
1897 | && ieee80211_is_data_qos(wh->frame_control)) { | |
1898 | tid = qos & 0xf; | |
1899 | mwl8k_tx_count_packet(sta, tid); | |
1900 | spin_lock(&priv->stream_lock); | |
1901 | stream = mwl8k_lookup_stream(hw, sta->addr, tid); | |
1902 | if (stream != NULL) { | |
1903 | if (stream->state == AMPDU_STREAM_ACTIVE) { | |
1904 | txpriority = stream->txq_idx; | |
1905 | index = stream->txq_idx; | |
1906 | } else if (stream->state == AMPDU_STREAM_NEW) { | |
1907 | /* We get here if the driver sends us packets | |
1908 | * after we've initiated a stream, but before | |
1909 | * our ampdu_action routine has been called | |
1910 | * with IEEE80211_AMPDU_TX_START to get the SSN | |
1911 | * for the ADDBA request. So this packet can | |
1912 | * go out with no risk of sequence number | |
1913 | * mismatch. No special handling is required. | |
1914 | */ | |
1915 | } else { | |
1916 | /* Drop packets that would go out after the | |
1917 | * ADDBA request was sent but before the ADDBA | |
1918 | * response is received. If we don't do this, | |
1919 | * the recipient would probably receive it | |
1920 | * after the ADDBA request with SSN 0. This | |
1921 | * will cause the recipient's BA receive window | |
1922 | * to shift, which would cause the subsequent | |
1923 | * packets in the BA stream to be discarded. | |
1924 | * mac80211 queues our packets for us in this | |
1925 | * case, so this is really just a safety check. | |
1926 | */ | |
1927 | wiphy_warn(hw->wiphy, | |
1928 | "Cannot send packet while ADDBA " | |
1929 | "dialog is underway.\n"); | |
1930 | spin_unlock(&priv->stream_lock); | |
1931 | dev_kfree_skb(skb); | |
1932 | return; | |
1933 | } | |
1934 | } else { | |
1935 | /* Defer calling mwl8k_start_stream so that the current | |
1936 | * skb can go out before the ADDBA request. This | |
1937 | * prevents sequence number mismatch at the recepient | |
1938 | * as described above. | |
1939 | */ | |
1940 | if (mwl8k_ampdu_allowed(sta, tid)) { | |
1941 | stream = mwl8k_add_stream(hw, sta, tid); | |
1942 | if (stream != NULL) | |
1943 | start_ba_session = true; | |
1944 | } | |
1945 | } | |
1946 | spin_unlock(&priv->stream_lock); | |
1947 | } | |
1948 | ||
1949 | dma = pci_map_single(priv->pdev, skb->data, | |
1950 | skb->len, PCI_DMA_TODEVICE); | |
1951 | ||
1952 | if (pci_dma_mapping_error(priv->pdev, dma)) { | |
1953 | wiphy_debug(hw->wiphy, | |
1954 | "failed to dma map skb, dropping TX frame.\n"); | |
1955 | if (start_ba_session) { | |
1956 | spin_lock(&priv->stream_lock); | |
1957 | mwl8k_remove_stream(hw, stream); | |
1958 | spin_unlock(&priv->stream_lock); | |
1959 | } | |
1960 | dev_kfree_skb(skb); | |
1961 | return; | |
1962 | } | |
1963 | ||
1964 | spin_lock_bh(&priv->tx_lock); | |
1965 | ||
1966 | txq = priv->txq + index; | |
1967 | ||
1968 | /* Mgmt frames that go out frequently are probe | |
1969 | * responses. Other mgmt frames got out relatively | |
1970 | * infrequently. Hence reserve 2 buffers so that | |
1971 | * other mgmt frames do not get dropped due to an | |
1972 | * already queued probe response in one of the | |
1973 | * reserved buffers. | |
1974 | */ | |
1975 | ||
1976 | if (txq->len >= MWL8K_TX_DESCS - 2) { | |
1977 | if (mgmtframe == false || | |
1978 | txq->len == MWL8K_TX_DESCS) { | |
1979 | if (start_ba_session) { | |
1980 | spin_lock(&priv->stream_lock); | |
1981 | mwl8k_remove_stream(hw, stream); | |
1982 | spin_unlock(&priv->stream_lock); | |
1983 | } | |
1984 | spin_unlock_bh(&priv->tx_lock); | |
1985 | dev_kfree_skb(skb); | |
1986 | return; | |
1987 | } | |
1988 | } | |
1989 | ||
1990 | BUG_ON(txq->skb[txq->tail] != NULL); | |
1991 | txq->skb[txq->tail] = skb; | |
1992 | ||
1993 | tx = txq->txd + txq->tail; | |
1994 | tx->data_rate = txdatarate; | |
1995 | tx->tx_priority = txpriority; | |
1996 | tx->qos_control = cpu_to_le16(qos); | |
1997 | tx->pkt_phys_addr = cpu_to_le32(dma); | |
1998 | tx->pkt_len = cpu_to_le16(skb->len); | |
1999 | tx->rate_info = 0; | |
2000 | if (!priv->ap_fw && tx_info->control.sta != NULL) | |
2001 | tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id; | |
2002 | else | |
2003 | tx->peer_id = 0; | |
2004 | ||
2005 | if (priv->ap_fw) | |
2006 | tx->timestamp = cpu_to_le32(ioread32(priv->regs + | |
2007 | MWL8K_HW_TIMER_REGISTER)); | |
2008 | ||
2009 | wmb(); | |
2010 | tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); | |
2011 | ||
2012 | txq->len++; | |
2013 | priv->pending_tx_pkts++; | |
2014 | ||
2015 | txq->tail++; | |
2016 | if (txq->tail == MWL8K_TX_DESCS) | |
2017 | txq->tail = 0; | |
2018 | ||
2019 | mwl8k_tx_start(priv); | |
2020 | ||
2021 | spin_unlock_bh(&priv->tx_lock); | |
2022 | ||
2023 | /* Initiate the ampdu session here */ | |
2024 | if (start_ba_session) { | |
2025 | spin_lock(&priv->stream_lock); | |
2026 | if (mwl8k_start_stream(hw, stream)) | |
2027 | mwl8k_remove_stream(hw, stream); | |
2028 | spin_unlock(&priv->stream_lock); | |
2029 | } | |
2030 | } | |
2031 | ||
2032 | ||
2033 | /* | |
2034 | * Firmware access. | |
2035 | * | |
2036 | * We have the following requirements for issuing firmware commands: | |
2037 | * - Some commands require that the packet transmit path is idle when | |
2038 | * the command is issued. (For simplicity, we'll just quiesce the | |
2039 | * transmit path for every command.) | |
2040 | * - There are certain sequences of commands that need to be issued to | |
2041 | * the hardware sequentially, with no other intervening commands. | |
2042 | * | |
2043 | * This leads to an implementation of a "firmware lock" as a mutex that | |
2044 | * can be taken recursively, and which is taken by both the low-level | |
2045 | * command submission function (mwl8k_post_cmd) as well as any users of | |
2046 | * that function that require issuing of an atomic sequence of commands, | |
2047 | * and quiesces the transmit path whenever it's taken. | |
2048 | */ | |
2049 | static int mwl8k_fw_lock(struct ieee80211_hw *hw) | |
2050 | { | |
2051 | struct mwl8k_priv *priv = hw->priv; | |
2052 | ||
2053 | if (priv->fw_mutex_owner != current) { | |
2054 | int rc; | |
2055 | ||
2056 | mutex_lock(&priv->fw_mutex); | |
2057 | ieee80211_stop_queues(hw); | |
2058 | ||
2059 | rc = mwl8k_tx_wait_empty(hw); | |
2060 | if (rc) { | |
2061 | ieee80211_wake_queues(hw); | |
2062 | mutex_unlock(&priv->fw_mutex); | |
2063 | ||
2064 | return rc; | |
2065 | } | |
2066 | ||
2067 | priv->fw_mutex_owner = current; | |
2068 | } | |
2069 | ||
2070 | priv->fw_mutex_depth++; | |
2071 | ||
2072 | return 0; | |
2073 | } | |
2074 | ||
2075 | static void mwl8k_fw_unlock(struct ieee80211_hw *hw) | |
2076 | { | |
2077 | struct mwl8k_priv *priv = hw->priv; | |
2078 | ||
2079 | if (!--priv->fw_mutex_depth) { | |
2080 | ieee80211_wake_queues(hw); | |
2081 | priv->fw_mutex_owner = NULL; | |
2082 | mutex_unlock(&priv->fw_mutex); | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | ||
2087 | /* | |
2088 | * Command processing. | |
2089 | */ | |
2090 | ||
2091 | /* Timeout firmware commands after 10s */ | |
2092 | #define MWL8K_CMD_TIMEOUT_MS 10000 | |
2093 | ||
2094 | static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) | |
2095 | { | |
2096 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
2097 | struct mwl8k_priv *priv = hw->priv; | |
2098 | void __iomem *regs = priv->regs; | |
2099 | dma_addr_t dma_addr; | |
2100 | unsigned int dma_size; | |
2101 | int rc; | |
2102 | unsigned long timeout = 0; | |
2103 | u8 buf[32]; | |
2104 | ||
2105 | cmd->result = (__force __le16) 0xffff; | |
2106 | dma_size = le16_to_cpu(cmd->length); | |
2107 | dma_addr = pci_map_single(priv->pdev, cmd, dma_size, | |
2108 | PCI_DMA_BIDIRECTIONAL); | |
2109 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
2110 | return -ENOMEM; | |
2111 | ||
2112 | rc = mwl8k_fw_lock(hw); | |
2113 | if (rc) { | |
2114 | pci_unmap_single(priv->pdev, dma_addr, dma_size, | |
2115 | PCI_DMA_BIDIRECTIONAL); | |
2116 | return rc; | |
2117 | } | |
2118 | ||
2119 | priv->hostcmd_wait = &cmd_wait; | |
2120 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
2121 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
2122 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
2123 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
2124 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
2125 | ||
2126 | timeout = wait_for_completion_timeout(&cmd_wait, | |
2127 | msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); | |
2128 | ||
2129 | priv->hostcmd_wait = NULL; | |
2130 | ||
2131 | mwl8k_fw_unlock(hw); | |
2132 | ||
2133 | pci_unmap_single(priv->pdev, dma_addr, dma_size, | |
2134 | PCI_DMA_BIDIRECTIONAL); | |
2135 | ||
2136 | if (!timeout) { | |
2137 | wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n", | |
2138 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
2139 | MWL8K_CMD_TIMEOUT_MS); | |
2140 | rc = -ETIMEDOUT; | |
2141 | } else { | |
2142 | int ms; | |
2143 | ||
2144 | ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout); | |
2145 | ||
2146 | rc = cmd->result ? -EINVAL : 0; | |
2147 | if (rc) | |
2148 | wiphy_err(hw->wiphy, "Command %s error 0x%x\n", | |
2149 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
2150 | le16_to_cpu(cmd->result)); | |
2151 | else if (ms > 2000) | |
2152 | wiphy_notice(hw->wiphy, "Command %s took %d ms\n", | |
2153 | mwl8k_cmd_name(cmd->code, | |
2154 | buf, sizeof(buf)), | |
2155 | ms); | |
2156 | } | |
2157 | ||
2158 | return rc; | |
2159 | } | |
2160 | ||
2161 | static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw, | |
2162 | struct ieee80211_vif *vif, | |
2163 | struct mwl8k_cmd_pkt *cmd) | |
2164 | { | |
2165 | if (vif != NULL) | |
2166 | cmd->macid = MWL8K_VIF(vif)->macid; | |
2167 | return mwl8k_post_cmd(hw, cmd); | |
2168 | } | |
2169 | ||
2170 | /* | |
2171 | * Setup code shared between STA and AP firmware images. | |
2172 | */ | |
2173 | static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw) | |
2174 | { | |
2175 | struct mwl8k_priv *priv = hw->priv; | |
2176 | ||
2177 | BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24)); | |
2178 | memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24)); | |
2179 | ||
2180 | BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24)); | |
2181 | memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24)); | |
2182 | ||
2183 | priv->band_24.band = IEEE80211_BAND_2GHZ; | |
2184 | priv->band_24.channels = priv->channels_24; | |
2185 | priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24); | |
2186 | priv->band_24.bitrates = priv->rates_24; | |
2187 | priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24); | |
2188 | ||
2189 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24; | |
2190 | } | |
2191 | ||
2192 | static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw) | |
2193 | { | |
2194 | struct mwl8k_priv *priv = hw->priv; | |
2195 | ||
2196 | BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50)); | |
2197 | memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50)); | |
2198 | ||
2199 | BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50)); | |
2200 | memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50)); | |
2201 | ||
2202 | priv->band_50.band = IEEE80211_BAND_5GHZ; | |
2203 | priv->band_50.channels = priv->channels_50; | |
2204 | priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50); | |
2205 | priv->band_50.bitrates = priv->rates_50; | |
2206 | priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50); | |
2207 | ||
2208 | hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50; | |
2209 | } | |
2210 | ||
2211 | /* | |
2212 | * CMD_GET_HW_SPEC (STA version). | |
2213 | */ | |
2214 | struct mwl8k_cmd_get_hw_spec_sta { | |
2215 | struct mwl8k_cmd_pkt header; | |
2216 | __u8 hw_rev; | |
2217 | __u8 host_interface; | |
2218 | __le16 num_mcaddrs; | |
2219 | __u8 perm_addr[ETH_ALEN]; | |
2220 | __le16 region_code; | |
2221 | __le32 fw_rev; | |
2222 | __le32 ps_cookie; | |
2223 | __le32 caps; | |
2224 | __u8 mcs_bitmap[16]; | |
2225 | __le32 rx_queue_ptr; | |
2226 | __le32 num_tx_queues; | |
2227 | __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES]; | |
2228 | __le32 caps2; | |
2229 | __le32 num_tx_desc_per_queue; | |
2230 | __le32 total_rxd; | |
2231 | } __packed; | |
2232 | ||
2233 | #define MWL8K_CAP_MAX_AMSDU 0x20000000 | |
2234 | #define MWL8K_CAP_GREENFIELD 0x08000000 | |
2235 | #define MWL8K_CAP_AMPDU 0x04000000 | |
2236 | #define MWL8K_CAP_RX_STBC 0x01000000 | |
2237 | #define MWL8K_CAP_TX_STBC 0x00800000 | |
2238 | #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000 | |
2239 | #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000 | |
2240 | #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000 | |
2241 | #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000 | |
2242 | #define MWL8K_CAP_DELAY_BA 0x00003000 | |
2243 | #define MWL8K_CAP_MIMO 0x00000200 | |
2244 | #define MWL8K_CAP_40MHZ 0x00000100 | |
2245 | #define MWL8K_CAP_BAND_MASK 0x00000007 | |
2246 | #define MWL8K_CAP_5GHZ 0x00000004 | |
2247 | #define MWL8K_CAP_2GHZ4 0x00000001 | |
2248 | ||
2249 | static void | |
2250 | mwl8k_set_ht_caps(struct ieee80211_hw *hw, | |
2251 | struct ieee80211_supported_band *band, u32 cap) | |
2252 | { | |
2253 | int rx_streams; | |
2254 | int tx_streams; | |
2255 | ||
2256 | band->ht_cap.ht_supported = 1; | |
2257 | ||
2258 | if (cap & MWL8K_CAP_MAX_AMSDU) | |
2259 | band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; | |
2260 | if (cap & MWL8K_CAP_GREENFIELD) | |
2261 | band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD; | |
2262 | if (cap & MWL8K_CAP_AMPDU) { | |
2263 | hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; | |
2264 | band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; | |
2265 | band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE; | |
2266 | } | |
2267 | if (cap & MWL8K_CAP_RX_STBC) | |
2268 | band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC; | |
2269 | if (cap & MWL8K_CAP_TX_STBC) | |
2270 | band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; | |
2271 | if (cap & MWL8K_CAP_SHORTGI_40MHZ) | |
2272 | band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; | |
2273 | if (cap & MWL8K_CAP_SHORTGI_20MHZ) | |
2274 | band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; | |
2275 | if (cap & MWL8K_CAP_DELAY_BA) | |
2276 | band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA; | |
2277 | if (cap & MWL8K_CAP_40MHZ) | |
2278 | band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
2279 | ||
2280 | rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK); | |
2281 | tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK); | |
2282 | ||
2283 | band->ht_cap.mcs.rx_mask[0] = 0xff; | |
2284 | if (rx_streams >= 2) | |
2285 | band->ht_cap.mcs.rx_mask[1] = 0xff; | |
2286 | if (rx_streams >= 3) | |
2287 | band->ht_cap.mcs.rx_mask[2] = 0xff; | |
2288 | band->ht_cap.mcs.rx_mask[4] = 0x01; | |
2289 | band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; | |
2290 | ||
2291 | if (rx_streams != tx_streams) { | |
2292 | band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; | |
2293 | band->ht_cap.mcs.tx_params |= (tx_streams - 1) << | |
2294 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | static void | |
2299 | mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps) | |
2300 | { | |
2301 | struct mwl8k_priv *priv = hw->priv; | |
2302 | ||
2303 | if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) { | |
2304 | mwl8k_setup_2ghz_band(hw); | |
2305 | if (caps & MWL8K_CAP_MIMO) | |
2306 | mwl8k_set_ht_caps(hw, &priv->band_24, caps); | |
2307 | } | |
2308 | ||
2309 | if (caps & MWL8K_CAP_5GHZ) { | |
2310 | mwl8k_setup_5ghz_band(hw); | |
2311 | if (caps & MWL8K_CAP_MIMO) | |
2312 | mwl8k_set_ht_caps(hw, &priv->band_50, caps); | |
2313 | } | |
2314 | } | |
2315 | ||
2316 | static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw) | |
2317 | { | |
2318 | struct mwl8k_priv *priv = hw->priv; | |
2319 | struct mwl8k_cmd_get_hw_spec_sta *cmd; | |
2320 | int rc; | |
2321 | int i; | |
2322 | ||
2323 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2324 | if (cmd == NULL) | |
2325 | return -ENOMEM; | |
2326 | ||
2327 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); | |
2328 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2329 | ||
2330 | memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); | |
2331 | cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); | |
2332 | cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); | |
2333 | cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); | |
2334 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
2335 | cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma); | |
2336 | cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); | |
2337 | cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); | |
2338 | ||
2339 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2340 | ||
2341 | if (!rc) { | |
2342 | SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); | |
2343 | priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); | |
2344 | priv->fw_rev = le32_to_cpu(cmd->fw_rev); | |
2345 | priv->hw_rev = cmd->hw_rev; | |
2346 | mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); | |
2347 | priv->ap_macids_supported = 0x00000000; | |
2348 | priv->sta_macids_supported = 0x00000001; | |
2349 | } | |
2350 | ||
2351 | kfree(cmd); | |
2352 | return rc; | |
2353 | } | |
2354 | ||
2355 | /* | |
2356 | * CMD_GET_HW_SPEC (AP version). | |
2357 | */ | |
2358 | struct mwl8k_cmd_get_hw_spec_ap { | |
2359 | struct mwl8k_cmd_pkt header; | |
2360 | __u8 hw_rev; | |
2361 | __u8 host_interface; | |
2362 | __le16 num_wcb; | |
2363 | __le16 num_mcaddrs; | |
2364 | __u8 perm_addr[ETH_ALEN]; | |
2365 | __le16 region_code; | |
2366 | __le16 num_antenna; | |
2367 | __le32 fw_rev; | |
2368 | __le32 wcbbase0; | |
2369 | __le32 rxwrptr; | |
2370 | __le32 rxrdptr; | |
2371 | __le32 ps_cookie; | |
2372 | __le32 wcbbase1; | |
2373 | __le32 wcbbase2; | |
2374 | __le32 wcbbase3; | |
2375 | __le32 fw_api_version; | |
2376 | __le32 caps; | |
2377 | __le32 num_of_ampdu_queues; | |
2378 | __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES]; | |
2379 | } __packed; | |
2380 | ||
2381 | static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw) | |
2382 | { | |
2383 | struct mwl8k_priv *priv = hw->priv; | |
2384 | struct mwl8k_cmd_get_hw_spec_ap *cmd; | |
2385 | int rc, i; | |
2386 | u32 api_version; | |
2387 | ||
2388 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2389 | if (cmd == NULL) | |
2390 | return -ENOMEM; | |
2391 | ||
2392 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); | |
2393 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2394 | ||
2395 | memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); | |
2396 | cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); | |
2397 | ||
2398 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2399 | ||
2400 | if (!rc) { | |
2401 | int off; | |
2402 | ||
2403 | api_version = le32_to_cpu(cmd->fw_api_version); | |
2404 | if (priv->device_info->fw_api_ap != api_version) { | |
2405 | printk(KERN_ERR "%s: Unsupported fw API version for %s." | |
2406 | " Expected %d got %d.\n", MWL8K_NAME, | |
2407 | priv->device_info->part_name, | |
2408 | priv->device_info->fw_api_ap, | |
2409 | api_version); | |
2410 | rc = -EINVAL; | |
2411 | goto done; | |
2412 | } | |
2413 | SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); | |
2414 | priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); | |
2415 | priv->fw_rev = le32_to_cpu(cmd->fw_rev); | |
2416 | priv->hw_rev = cmd->hw_rev; | |
2417 | mwl8k_set_caps(hw, le32_to_cpu(cmd->caps)); | |
2418 | priv->ap_macids_supported = 0x000000ff; | |
2419 | priv->sta_macids_supported = 0x00000000; | |
2420 | priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues); | |
2421 | if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) { | |
2422 | wiphy_warn(hw->wiphy, "fw reported %d ampdu queues" | |
2423 | " but we only support %d.\n", | |
2424 | priv->num_ampdu_queues, | |
2425 | MWL8K_MAX_AMPDU_QUEUES); | |
2426 | priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES; | |
2427 | } | |
2428 | off = le32_to_cpu(cmd->rxwrptr) & 0xffff; | |
2429 | iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); | |
2430 | ||
2431 | off = le32_to_cpu(cmd->rxrdptr) & 0xffff; | |
2432 | iowrite32(priv->rxq[0].rxd_dma, priv->sram + off); | |
2433 | ||
2434 | priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff; | |
2435 | priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff; | |
2436 | priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff; | |
2437 | priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff; | |
2438 | ||
2439 | for (i = 0; i < priv->num_ampdu_queues; i++) | |
2440 | priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] = | |
2441 | le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff; | |
2442 | } | |
2443 | ||
2444 | done: | |
2445 | kfree(cmd); | |
2446 | return rc; | |
2447 | } | |
2448 | ||
2449 | /* | |
2450 | * CMD_SET_HW_SPEC. | |
2451 | */ | |
2452 | struct mwl8k_cmd_set_hw_spec { | |
2453 | struct mwl8k_cmd_pkt header; | |
2454 | __u8 hw_rev; | |
2455 | __u8 host_interface; | |
2456 | __le16 num_mcaddrs; | |
2457 | __u8 perm_addr[ETH_ALEN]; | |
2458 | __le16 region_code; | |
2459 | __le32 fw_rev; | |
2460 | __le32 ps_cookie; | |
2461 | __le32 caps; | |
2462 | __le32 rx_queue_ptr; | |
2463 | __le32 num_tx_queues; | |
2464 | __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES]; | |
2465 | __le32 flags; | |
2466 | __le32 num_tx_desc_per_queue; | |
2467 | __le32 total_rxd; | |
2468 | } __packed; | |
2469 | ||
2470 | /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause | |
2471 | * packets to expire 500 ms after the timestamp in the tx descriptor. That is, | |
2472 | * the packets that are queued for more than 500ms, will be dropped in the | |
2473 | * hardware. This helps minimizing the issues caused due to head-of-line | |
2474 | * blocking where a slow client can hog the bandwidth and affect traffic to a | |
2475 | * faster client. | |
2476 | */ | |
2477 | #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400 | |
2478 | #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200 | |
2479 | #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080 | |
2480 | #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020 | |
2481 | #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010 | |
2482 | ||
2483 | static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw) | |
2484 | { | |
2485 | struct mwl8k_priv *priv = hw->priv; | |
2486 | struct mwl8k_cmd_set_hw_spec *cmd; | |
2487 | int rc; | |
2488 | int i; | |
2489 | ||
2490 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2491 | if (cmd == NULL) | |
2492 | return -ENOMEM; | |
2493 | ||
2494 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC); | |
2495 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2496 | ||
2497 | cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); | |
2498 | cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma); | |
2499 | cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv)); | |
2500 | ||
2501 | /* | |
2502 | * Mac80211 stack has Q0 as highest priority and Q3 as lowest in | |
2503 | * that order. Firmware has Q3 as highest priority and Q0 as lowest | |
2504 | * in that order. Map Q3 of mac80211 to Q0 of firmware so that the | |
2505 | * priority is interpreted the right way in firmware. | |
2506 | */ | |
2507 | for (i = 0; i < mwl8k_tx_queues(priv); i++) { | |
2508 | int j = mwl8k_tx_queues(priv) - 1 - i; | |
2509 | cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma); | |
2510 | } | |
2511 | ||
2512 | cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT | | |
2513 | MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP | | |
2514 | MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON | | |
2515 | MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY | | |
2516 | MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR); | |
2517 | cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); | |
2518 | cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS); | |
2519 | ||
2520 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2521 | kfree(cmd); | |
2522 | ||
2523 | return rc; | |
2524 | } | |
2525 | ||
2526 | /* | |
2527 | * CMD_MAC_MULTICAST_ADR. | |
2528 | */ | |
2529 | struct mwl8k_cmd_mac_multicast_adr { | |
2530 | struct mwl8k_cmd_pkt header; | |
2531 | __le16 action; | |
2532 | __le16 numaddr; | |
2533 | __u8 addr[0][ETH_ALEN]; | |
2534 | }; | |
2535 | ||
2536 | #define MWL8K_ENABLE_RX_DIRECTED 0x0001 | |
2537 | #define MWL8K_ENABLE_RX_MULTICAST 0x0002 | |
2538 | #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004 | |
2539 | #define MWL8K_ENABLE_RX_BROADCAST 0x0008 | |
2540 | ||
2541 | static struct mwl8k_cmd_pkt * | |
2542 | __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti, | |
2543 | struct netdev_hw_addr_list *mc_list) | |
2544 | { | |
2545 | struct mwl8k_priv *priv = hw->priv; | |
2546 | struct mwl8k_cmd_mac_multicast_adr *cmd; | |
2547 | int size; | |
2548 | int mc_count = 0; | |
2549 | ||
2550 | if (mc_list) | |
2551 | mc_count = netdev_hw_addr_list_count(mc_list); | |
2552 | ||
2553 | if (allmulti || mc_count > priv->num_mcaddrs) { | |
2554 | allmulti = 1; | |
2555 | mc_count = 0; | |
2556 | } | |
2557 | ||
2558 | size = sizeof(*cmd) + mc_count * ETH_ALEN; | |
2559 | ||
2560 | cmd = kzalloc(size, GFP_ATOMIC); | |
2561 | if (cmd == NULL) | |
2562 | return NULL; | |
2563 | ||
2564 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); | |
2565 | cmd->header.length = cpu_to_le16(size); | |
2566 | cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED | | |
2567 | MWL8K_ENABLE_RX_BROADCAST); | |
2568 | ||
2569 | if (allmulti) { | |
2570 | cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST); | |
2571 | } else if (mc_count) { | |
2572 | struct netdev_hw_addr *ha; | |
2573 | int i = 0; | |
2574 | ||
2575 | cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); | |
2576 | cmd->numaddr = cpu_to_le16(mc_count); | |
2577 | netdev_hw_addr_list_for_each(ha, mc_list) { | |
2578 | memcpy(cmd->addr[i], ha->addr, ETH_ALEN); | |
2579 | } | |
2580 | } | |
2581 | ||
2582 | return &cmd->header; | |
2583 | } | |
2584 | ||
2585 | /* | |
2586 | * CMD_GET_STAT. | |
2587 | */ | |
2588 | struct mwl8k_cmd_get_stat { | |
2589 | struct mwl8k_cmd_pkt header; | |
2590 | __le32 stats[64]; | |
2591 | } __packed; | |
2592 | ||
2593 | #define MWL8K_STAT_ACK_FAILURE 9 | |
2594 | #define MWL8K_STAT_RTS_FAILURE 12 | |
2595 | #define MWL8K_STAT_FCS_ERROR 24 | |
2596 | #define MWL8K_STAT_RTS_SUCCESS 11 | |
2597 | ||
2598 | static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw, | |
2599 | struct ieee80211_low_level_stats *stats) | |
2600 | { | |
2601 | struct mwl8k_cmd_get_stat *cmd; | |
2602 | int rc; | |
2603 | ||
2604 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2605 | if (cmd == NULL) | |
2606 | return -ENOMEM; | |
2607 | ||
2608 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); | |
2609 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2610 | ||
2611 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2612 | if (!rc) { | |
2613 | stats->dot11ACKFailureCount = | |
2614 | le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); | |
2615 | stats->dot11RTSFailureCount = | |
2616 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); | |
2617 | stats->dot11FCSErrorCount = | |
2618 | le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); | |
2619 | stats->dot11RTSSuccessCount = | |
2620 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); | |
2621 | } | |
2622 | kfree(cmd); | |
2623 | ||
2624 | return rc; | |
2625 | } | |
2626 | ||
2627 | /* | |
2628 | * CMD_RADIO_CONTROL. | |
2629 | */ | |
2630 | struct mwl8k_cmd_radio_control { | |
2631 | struct mwl8k_cmd_pkt header; | |
2632 | __le16 action; | |
2633 | __le16 control; | |
2634 | __le16 radio_on; | |
2635 | } __packed; | |
2636 | ||
2637 | static int | |
2638 | mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force) | |
2639 | { | |
2640 | struct mwl8k_priv *priv = hw->priv; | |
2641 | struct mwl8k_cmd_radio_control *cmd; | |
2642 | int rc; | |
2643 | ||
2644 | if (enable == priv->radio_on && !force) | |
2645 | return 0; | |
2646 | ||
2647 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2648 | if (cmd == NULL) | |
2649 | return -ENOMEM; | |
2650 | ||
2651 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); | |
2652 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2653 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
2654 | cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); | |
2655 | cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); | |
2656 | ||
2657 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2658 | kfree(cmd); | |
2659 | ||
2660 | if (!rc) | |
2661 | priv->radio_on = enable; | |
2662 | ||
2663 | return rc; | |
2664 | } | |
2665 | ||
2666 | static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw) | |
2667 | { | |
2668 | return mwl8k_cmd_radio_control(hw, 0, 0); | |
2669 | } | |
2670 | ||
2671 | static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw) | |
2672 | { | |
2673 | return mwl8k_cmd_radio_control(hw, 1, 0); | |
2674 | } | |
2675 | ||
2676 | static int | |
2677 | mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) | |
2678 | { | |
2679 | struct mwl8k_priv *priv = hw->priv; | |
2680 | ||
2681 | priv->radio_short_preamble = short_preamble; | |
2682 | ||
2683 | return mwl8k_cmd_radio_control(hw, 1, 1); | |
2684 | } | |
2685 | ||
2686 | /* | |
2687 | * CMD_RF_TX_POWER. | |
2688 | */ | |
2689 | #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8 | |
2690 | ||
2691 | struct mwl8k_cmd_rf_tx_power { | |
2692 | struct mwl8k_cmd_pkt header; | |
2693 | __le16 action; | |
2694 | __le16 support_level; | |
2695 | __le16 current_level; | |
2696 | __le16 reserved; | |
2697 | __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL]; | |
2698 | } __packed; | |
2699 | ||
2700 | static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm) | |
2701 | { | |
2702 | struct mwl8k_cmd_rf_tx_power *cmd; | |
2703 | int rc; | |
2704 | ||
2705 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2706 | if (cmd == NULL) | |
2707 | return -ENOMEM; | |
2708 | ||
2709 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); | |
2710 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2711 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
2712 | cmd->support_level = cpu_to_le16(dBm); | |
2713 | ||
2714 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2715 | kfree(cmd); | |
2716 | ||
2717 | return rc; | |
2718 | } | |
2719 | ||
2720 | /* | |
2721 | * CMD_TX_POWER. | |
2722 | */ | |
2723 | #define MWL8K_TX_POWER_LEVEL_TOTAL 12 | |
2724 | ||
2725 | struct mwl8k_cmd_tx_power { | |
2726 | struct mwl8k_cmd_pkt header; | |
2727 | __le16 action; | |
2728 | __le16 band; | |
2729 | __le16 channel; | |
2730 | __le16 bw; | |
2731 | __le16 sub_ch; | |
2732 | __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; | |
2733 | } __packed; | |
2734 | ||
2735 | static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw, | |
2736 | struct ieee80211_conf *conf, | |
2737 | unsigned short pwr) | |
2738 | { | |
2739 | struct ieee80211_channel *channel = conf->channel; | |
2740 | struct mwl8k_cmd_tx_power *cmd; | |
2741 | int rc; | |
2742 | int i; | |
2743 | ||
2744 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2745 | if (cmd == NULL) | |
2746 | return -ENOMEM; | |
2747 | ||
2748 | cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER); | |
2749 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2750 | cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST); | |
2751 | ||
2752 | if (channel->band == IEEE80211_BAND_2GHZ) | |
2753 | cmd->band = cpu_to_le16(0x1); | |
2754 | else if (channel->band == IEEE80211_BAND_5GHZ) | |
2755 | cmd->band = cpu_to_le16(0x4); | |
2756 | ||
2757 | cmd->channel = channel->hw_value; | |
2758 | ||
2759 | if (conf->channel_type == NL80211_CHAN_NO_HT || | |
2760 | conf->channel_type == NL80211_CHAN_HT20) { | |
2761 | cmd->bw = cpu_to_le16(0x2); | |
2762 | } else { | |
2763 | cmd->bw = cpu_to_le16(0x4); | |
2764 | if (conf->channel_type == NL80211_CHAN_HT40MINUS) | |
2765 | cmd->sub_ch = cpu_to_le16(0x3); | |
2766 | else if (conf->channel_type == NL80211_CHAN_HT40PLUS) | |
2767 | cmd->sub_ch = cpu_to_le16(0x1); | |
2768 | } | |
2769 | ||
2770 | for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++) | |
2771 | cmd->power_level_list[i] = cpu_to_le16(pwr); | |
2772 | ||
2773 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2774 | kfree(cmd); | |
2775 | ||
2776 | return rc; | |
2777 | } | |
2778 | ||
2779 | /* | |
2780 | * CMD_RF_ANTENNA. | |
2781 | */ | |
2782 | struct mwl8k_cmd_rf_antenna { | |
2783 | struct mwl8k_cmd_pkt header; | |
2784 | __le16 antenna; | |
2785 | __le16 mode; | |
2786 | } __packed; | |
2787 | ||
2788 | #define MWL8K_RF_ANTENNA_RX 1 | |
2789 | #define MWL8K_RF_ANTENNA_TX 2 | |
2790 | ||
2791 | static int | |
2792 | mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask) | |
2793 | { | |
2794 | struct mwl8k_cmd_rf_antenna *cmd; | |
2795 | int rc; | |
2796 | ||
2797 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2798 | if (cmd == NULL) | |
2799 | return -ENOMEM; | |
2800 | ||
2801 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA); | |
2802 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2803 | cmd->antenna = cpu_to_le16(antenna); | |
2804 | cmd->mode = cpu_to_le16(mask); | |
2805 | ||
2806 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2807 | kfree(cmd); | |
2808 | ||
2809 | return rc; | |
2810 | } | |
2811 | ||
2812 | /* | |
2813 | * CMD_SET_BEACON. | |
2814 | */ | |
2815 | struct mwl8k_cmd_set_beacon { | |
2816 | struct mwl8k_cmd_pkt header; | |
2817 | __le16 beacon_len; | |
2818 | __u8 beacon[0]; | |
2819 | }; | |
2820 | ||
2821 | static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw, | |
2822 | struct ieee80211_vif *vif, u8 *beacon, int len) | |
2823 | { | |
2824 | struct mwl8k_cmd_set_beacon *cmd; | |
2825 | int rc; | |
2826 | ||
2827 | cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL); | |
2828 | if (cmd == NULL) | |
2829 | return -ENOMEM; | |
2830 | ||
2831 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON); | |
2832 | cmd->header.length = cpu_to_le16(sizeof(*cmd) + len); | |
2833 | cmd->beacon_len = cpu_to_le16(len); | |
2834 | memcpy(cmd->beacon, beacon, len); | |
2835 | ||
2836 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
2837 | kfree(cmd); | |
2838 | ||
2839 | return rc; | |
2840 | } | |
2841 | ||
2842 | /* | |
2843 | * CMD_SET_PRE_SCAN. | |
2844 | */ | |
2845 | struct mwl8k_cmd_set_pre_scan { | |
2846 | struct mwl8k_cmd_pkt header; | |
2847 | } __packed; | |
2848 | ||
2849 | static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) | |
2850 | { | |
2851 | struct mwl8k_cmd_set_pre_scan *cmd; | |
2852 | int rc; | |
2853 | ||
2854 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2855 | if (cmd == NULL) | |
2856 | return -ENOMEM; | |
2857 | ||
2858 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); | |
2859 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2860 | ||
2861 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2862 | kfree(cmd); | |
2863 | ||
2864 | return rc; | |
2865 | } | |
2866 | ||
2867 | /* | |
2868 | * CMD_SET_POST_SCAN. | |
2869 | */ | |
2870 | struct mwl8k_cmd_set_post_scan { | |
2871 | struct mwl8k_cmd_pkt header; | |
2872 | __le32 isibss; | |
2873 | __u8 bssid[ETH_ALEN]; | |
2874 | } __packed; | |
2875 | ||
2876 | static int | |
2877 | mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac) | |
2878 | { | |
2879 | struct mwl8k_cmd_set_post_scan *cmd; | |
2880 | int rc; | |
2881 | ||
2882 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2883 | if (cmd == NULL) | |
2884 | return -ENOMEM; | |
2885 | ||
2886 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); | |
2887 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2888 | cmd->isibss = 0; | |
2889 | memcpy(cmd->bssid, mac, ETH_ALEN); | |
2890 | ||
2891 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2892 | kfree(cmd); | |
2893 | ||
2894 | return rc; | |
2895 | } | |
2896 | ||
2897 | /* | |
2898 | * CMD_SET_RF_CHANNEL. | |
2899 | */ | |
2900 | struct mwl8k_cmd_set_rf_channel { | |
2901 | struct mwl8k_cmd_pkt header; | |
2902 | __le16 action; | |
2903 | __u8 current_channel; | |
2904 | __le32 channel_flags; | |
2905 | } __packed; | |
2906 | ||
2907 | static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, | |
2908 | struct ieee80211_conf *conf) | |
2909 | { | |
2910 | struct ieee80211_channel *channel = conf->channel; | |
2911 | struct mwl8k_cmd_set_rf_channel *cmd; | |
2912 | int rc; | |
2913 | ||
2914 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2915 | if (cmd == NULL) | |
2916 | return -ENOMEM; | |
2917 | ||
2918 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); | |
2919 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2920 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
2921 | cmd->current_channel = channel->hw_value; | |
2922 | ||
2923 | if (channel->band == IEEE80211_BAND_2GHZ) | |
2924 | cmd->channel_flags |= cpu_to_le32(0x00000001); | |
2925 | else if (channel->band == IEEE80211_BAND_5GHZ) | |
2926 | cmd->channel_flags |= cpu_to_le32(0x00000004); | |
2927 | ||
2928 | if (conf->channel_type == NL80211_CHAN_NO_HT || | |
2929 | conf->channel_type == NL80211_CHAN_HT20) | |
2930 | cmd->channel_flags |= cpu_to_le32(0x00000080); | |
2931 | else if (conf->channel_type == NL80211_CHAN_HT40MINUS) | |
2932 | cmd->channel_flags |= cpu_to_le32(0x000001900); | |
2933 | else if (conf->channel_type == NL80211_CHAN_HT40PLUS) | |
2934 | cmd->channel_flags |= cpu_to_le32(0x000000900); | |
2935 | ||
2936 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2937 | kfree(cmd); | |
2938 | ||
2939 | return rc; | |
2940 | } | |
2941 | ||
2942 | /* | |
2943 | * CMD_SET_AID. | |
2944 | */ | |
2945 | #define MWL8K_FRAME_PROT_DISABLED 0x00 | |
2946 | #define MWL8K_FRAME_PROT_11G 0x07 | |
2947 | #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 | |
2948 | #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 | |
2949 | ||
2950 | struct mwl8k_cmd_update_set_aid { | |
2951 | struct mwl8k_cmd_pkt header; | |
2952 | __le16 aid; | |
2953 | ||
2954 | /* AP's MAC address (BSSID) */ | |
2955 | __u8 bssid[ETH_ALEN]; | |
2956 | __le16 protection_mode; | |
2957 | __u8 supp_rates[14]; | |
2958 | } __packed; | |
2959 | ||
2960 | static void legacy_rate_mask_to_array(u8 *rates, u32 mask) | |
2961 | { | |
2962 | int i; | |
2963 | int j; | |
2964 | ||
2965 | /* | |
2966 | * Clear nonstandard rates 4 and 13. | |
2967 | */ | |
2968 | mask &= 0x1fef; | |
2969 | ||
2970 | for (i = 0, j = 0; i < 14; i++) { | |
2971 | if (mask & (1 << i)) | |
2972 | rates[j++] = mwl8k_rates_24[i].hw_value; | |
2973 | } | |
2974 | } | |
2975 | ||
2976 | static int | |
2977 | mwl8k_cmd_set_aid(struct ieee80211_hw *hw, | |
2978 | struct ieee80211_vif *vif, u32 legacy_rate_mask) | |
2979 | { | |
2980 | struct mwl8k_cmd_update_set_aid *cmd; | |
2981 | u16 prot_mode; | |
2982 | int rc; | |
2983 | ||
2984 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2985 | if (cmd == NULL) | |
2986 | return -ENOMEM; | |
2987 | ||
2988 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); | |
2989 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2990 | cmd->aid = cpu_to_le16(vif->bss_conf.aid); | |
2991 | memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN); | |
2992 | ||
2993 | if (vif->bss_conf.use_cts_prot) { | |
2994 | prot_mode = MWL8K_FRAME_PROT_11G; | |
2995 | } else { | |
2996 | switch (vif->bss_conf.ht_operation_mode & | |
2997 | IEEE80211_HT_OP_MODE_PROTECTION) { | |
2998 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
2999 | prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; | |
3000 | break; | |
3001 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
3002 | prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; | |
3003 | break; | |
3004 | default: | |
3005 | prot_mode = MWL8K_FRAME_PROT_DISABLED; | |
3006 | break; | |
3007 | } | |
3008 | } | |
3009 | cmd->protection_mode = cpu_to_le16(prot_mode); | |
3010 | ||
3011 | legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask); | |
3012 | ||
3013 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3014 | kfree(cmd); | |
3015 | ||
3016 | return rc; | |
3017 | } | |
3018 | ||
3019 | /* | |
3020 | * CMD_SET_RATE. | |
3021 | */ | |
3022 | struct mwl8k_cmd_set_rate { | |
3023 | struct mwl8k_cmd_pkt header; | |
3024 | __u8 legacy_rates[14]; | |
3025 | ||
3026 | /* Bitmap for supported MCS codes. */ | |
3027 | __u8 mcs_set[16]; | |
3028 | __u8 reserved[16]; | |
3029 | } __packed; | |
3030 | ||
3031 | static int | |
3032 | mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
3033 | u32 legacy_rate_mask, u8 *mcs_rates) | |
3034 | { | |
3035 | struct mwl8k_cmd_set_rate *cmd; | |
3036 | int rc; | |
3037 | ||
3038 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3039 | if (cmd == NULL) | |
3040 | return -ENOMEM; | |
3041 | ||
3042 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); | |
3043 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3044 | legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask); | |
3045 | memcpy(cmd->mcs_set, mcs_rates, 16); | |
3046 | ||
3047 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3048 | kfree(cmd); | |
3049 | ||
3050 | return rc; | |
3051 | } | |
3052 | ||
3053 | /* | |
3054 | * CMD_FINALIZE_JOIN. | |
3055 | */ | |
3056 | #define MWL8K_FJ_BEACON_MAXLEN 128 | |
3057 | ||
3058 | struct mwl8k_cmd_finalize_join { | |
3059 | struct mwl8k_cmd_pkt header; | |
3060 | __le32 sleep_interval; /* Number of beacon periods to sleep */ | |
3061 | __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; | |
3062 | } __packed; | |
3063 | ||
3064 | static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame, | |
3065 | int framelen, int dtim) | |
3066 | { | |
3067 | struct mwl8k_cmd_finalize_join *cmd; | |
3068 | struct ieee80211_mgmt *payload = frame; | |
3069 | int payload_len; | |
3070 | int rc; | |
3071 | ||
3072 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3073 | if (cmd == NULL) | |
3074 | return -ENOMEM; | |
3075 | ||
3076 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); | |
3077 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3078 | cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); | |
3079 | ||
3080 | payload_len = framelen - ieee80211_hdrlen(payload->frame_control); | |
3081 | if (payload_len < 0) | |
3082 | payload_len = 0; | |
3083 | else if (payload_len > MWL8K_FJ_BEACON_MAXLEN) | |
3084 | payload_len = MWL8K_FJ_BEACON_MAXLEN; | |
3085 | ||
3086 | memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); | |
3087 | ||
3088 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3089 | kfree(cmd); | |
3090 | ||
3091 | return rc; | |
3092 | } | |
3093 | ||
3094 | /* | |
3095 | * CMD_SET_RTS_THRESHOLD. | |
3096 | */ | |
3097 | struct mwl8k_cmd_set_rts_threshold { | |
3098 | struct mwl8k_cmd_pkt header; | |
3099 | __le16 action; | |
3100 | __le16 threshold; | |
3101 | } __packed; | |
3102 | ||
3103 | static int | |
3104 | mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh) | |
3105 | { | |
3106 | struct mwl8k_cmd_set_rts_threshold *cmd; | |
3107 | int rc; | |
3108 | ||
3109 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3110 | if (cmd == NULL) | |
3111 | return -ENOMEM; | |
3112 | ||
3113 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); | |
3114 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3115 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
3116 | cmd->threshold = cpu_to_le16(rts_thresh); | |
3117 | ||
3118 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3119 | kfree(cmd); | |
3120 | ||
3121 | return rc; | |
3122 | } | |
3123 | ||
3124 | /* | |
3125 | * CMD_SET_SLOT. | |
3126 | */ | |
3127 | struct mwl8k_cmd_set_slot { | |
3128 | struct mwl8k_cmd_pkt header; | |
3129 | __le16 action; | |
3130 | __u8 short_slot; | |
3131 | } __packed; | |
3132 | ||
3133 | static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) | |
3134 | { | |
3135 | struct mwl8k_cmd_set_slot *cmd; | |
3136 | int rc; | |
3137 | ||
3138 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3139 | if (cmd == NULL) | |
3140 | return -ENOMEM; | |
3141 | ||
3142 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); | |
3143 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3144 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
3145 | cmd->short_slot = short_slot_time; | |
3146 | ||
3147 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3148 | kfree(cmd); | |
3149 | ||
3150 | return rc; | |
3151 | } | |
3152 | ||
3153 | /* | |
3154 | * CMD_SET_EDCA_PARAMS. | |
3155 | */ | |
3156 | struct mwl8k_cmd_set_edca_params { | |
3157 | struct mwl8k_cmd_pkt header; | |
3158 | ||
3159 | /* See MWL8K_SET_EDCA_XXX below */ | |
3160 | __le16 action; | |
3161 | ||
3162 | /* TX opportunity in units of 32 us */ | |
3163 | __le16 txop; | |
3164 | ||
3165 | union { | |
3166 | struct { | |
3167 | /* Log exponent of max contention period: 0...15 */ | |
3168 | __le32 log_cw_max; | |
3169 | ||
3170 | /* Log exponent of min contention period: 0...15 */ | |
3171 | __le32 log_cw_min; | |
3172 | ||
3173 | /* Adaptive interframe spacing in units of 32us */ | |
3174 | __u8 aifs; | |
3175 | ||
3176 | /* TX queue to configure */ | |
3177 | __u8 txq; | |
3178 | } ap; | |
3179 | struct { | |
3180 | /* Log exponent of max contention period: 0...15 */ | |
3181 | __u8 log_cw_max; | |
3182 | ||
3183 | /* Log exponent of min contention period: 0...15 */ | |
3184 | __u8 log_cw_min; | |
3185 | ||
3186 | /* Adaptive interframe spacing in units of 32us */ | |
3187 | __u8 aifs; | |
3188 | ||
3189 | /* TX queue to configure */ | |
3190 | __u8 txq; | |
3191 | } sta; | |
3192 | }; | |
3193 | } __packed; | |
3194 | ||
3195 | #define MWL8K_SET_EDCA_CW 0x01 | |
3196 | #define MWL8K_SET_EDCA_TXOP 0x02 | |
3197 | #define MWL8K_SET_EDCA_AIFS 0x04 | |
3198 | ||
3199 | #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ | |
3200 | MWL8K_SET_EDCA_TXOP | \ | |
3201 | MWL8K_SET_EDCA_AIFS) | |
3202 | ||
3203 | static int | |
3204 | mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, | |
3205 | __u16 cw_min, __u16 cw_max, | |
3206 | __u8 aifs, __u16 txop) | |
3207 | { | |
3208 | struct mwl8k_priv *priv = hw->priv; | |
3209 | struct mwl8k_cmd_set_edca_params *cmd; | |
3210 | int rc; | |
3211 | ||
3212 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3213 | if (cmd == NULL) | |
3214 | return -ENOMEM; | |
3215 | ||
3216 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); | |
3217 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3218 | cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); | |
3219 | cmd->txop = cpu_to_le16(txop); | |
3220 | if (priv->ap_fw) { | |
3221 | cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1)); | |
3222 | cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1)); | |
3223 | cmd->ap.aifs = aifs; | |
3224 | cmd->ap.txq = qnum; | |
3225 | } else { | |
3226 | cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1); | |
3227 | cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1); | |
3228 | cmd->sta.aifs = aifs; | |
3229 | cmd->sta.txq = qnum; | |
3230 | } | |
3231 | ||
3232 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3233 | kfree(cmd); | |
3234 | ||
3235 | return rc; | |
3236 | } | |
3237 | ||
3238 | /* | |
3239 | * CMD_SET_WMM_MODE. | |
3240 | */ | |
3241 | struct mwl8k_cmd_set_wmm_mode { | |
3242 | struct mwl8k_cmd_pkt header; | |
3243 | __le16 action; | |
3244 | } __packed; | |
3245 | ||
3246 | static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable) | |
3247 | { | |
3248 | struct mwl8k_priv *priv = hw->priv; | |
3249 | struct mwl8k_cmd_set_wmm_mode *cmd; | |
3250 | int rc; | |
3251 | ||
3252 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3253 | if (cmd == NULL) | |
3254 | return -ENOMEM; | |
3255 | ||
3256 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); | |
3257 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3258 | cmd->action = cpu_to_le16(!!enable); | |
3259 | ||
3260 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3261 | kfree(cmd); | |
3262 | ||
3263 | if (!rc) | |
3264 | priv->wmm_enabled = enable; | |
3265 | ||
3266 | return rc; | |
3267 | } | |
3268 | ||
3269 | /* | |
3270 | * CMD_MIMO_CONFIG. | |
3271 | */ | |
3272 | struct mwl8k_cmd_mimo_config { | |
3273 | struct mwl8k_cmd_pkt header; | |
3274 | __le32 action; | |
3275 | __u8 rx_antenna_map; | |
3276 | __u8 tx_antenna_map; | |
3277 | } __packed; | |
3278 | ||
3279 | static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) | |
3280 | { | |
3281 | struct mwl8k_cmd_mimo_config *cmd; | |
3282 | int rc; | |
3283 | ||
3284 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3285 | if (cmd == NULL) | |
3286 | return -ENOMEM; | |
3287 | ||
3288 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); | |
3289 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3290 | cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); | |
3291 | cmd->rx_antenna_map = rx; | |
3292 | cmd->tx_antenna_map = tx; | |
3293 | ||
3294 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3295 | kfree(cmd); | |
3296 | ||
3297 | return rc; | |
3298 | } | |
3299 | ||
3300 | /* | |
3301 | * CMD_USE_FIXED_RATE (STA version). | |
3302 | */ | |
3303 | struct mwl8k_cmd_use_fixed_rate_sta { | |
3304 | struct mwl8k_cmd_pkt header; | |
3305 | __le32 action; | |
3306 | __le32 allow_rate_drop; | |
3307 | __le32 num_rates; | |
3308 | struct { | |
3309 | __le32 is_ht_rate; | |
3310 | __le32 enable_retry; | |
3311 | __le32 rate; | |
3312 | __le32 retry_count; | |
3313 | } rate_entry[8]; | |
3314 | __le32 rate_type; | |
3315 | __le32 reserved1; | |
3316 | __le32 reserved2; | |
3317 | } __packed; | |
3318 | ||
3319 | #define MWL8K_USE_AUTO_RATE 0x0002 | |
3320 | #define MWL8K_UCAST_RATE 0 | |
3321 | ||
3322 | static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw) | |
3323 | { | |
3324 | struct mwl8k_cmd_use_fixed_rate_sta *cmd; | |
3325 | int rc; | |
3326 | ||
3327 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3328 | if (cmd == NULL) | |
3329 | return -ENOMEM; | |
3330 | ||
3331 | cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); | |
3332 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3333 | cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); | |
3334 | cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE); | |
3335 | ||
3336 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3337 | kfree(cmd); | |
3338 | ||
3339 | return rc; | |
3340 | } | |
3341 | ||
3342 | /* | |
3343 | * CMD_USE_FIXED_RATE (AP version). | |
3344 | */ | |
3345 | struct mwl8k_cmd_use_fixed_rate_ap { | |
3346 | struct mwl8k_cmd_pkt header; | |
3347 | __le32 action; | |
3348 | __le32 allow_rate_drop; | |
3349 | __le32 num_rates; | |
3350 | struct mwl8k_rate_entry_ap { | |
3351 | __le32 is_ht_rate; | |
3352 | __le32 enable_retry; | |
3353 | __le32 rate; | |
3354 | __le32 retry_count; | |
3355 | } rate_entry[4]; | |
3356 | u8 multicast_rate; | |
3357 | u8 multicast_rate_type; | |
3358 | u8 management_rate; | |
3359 | } __packed; | |
3360 | ||
3361 | static int | |
3362 | mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt) | |
3363 | { | |
3364 | struct mwl8k_cmd_use_fixed_rate_ap *cmd; | |
3365 | int rc; | |
3366 | ||
3367 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3368 | if (cmd == NULL) | |
3369 | return -ENOMEM; | |
3370 | ||
3371 | cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); | |
3372 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3373 | cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE); | |
3374 | cmd->multicast_rate = mcast; | |
3375 | cmd->management_rate = mgmt; | |
3376 | ||
3377 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3378 | kfree(cmd); | |
3379 | ||
3380 | return rc; | |
3381 | } | |
3382 | ||
3383 | /* | |
3384 | * CMD_ENABLE_SNIFFER. | |
3385 | */ | |
3386 | struct mwl8k_cmd_enable_sniffer { | |
3387 | struct mwl8k_cmd_pkt header; | |
3388 | __le32 action; | |
3389 | } __packed; | |
3390 | ||
3391 | static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable) | |
3392 | { | |
3393 | struct mwl8k_cmd_enable_sniffer *cmd; | |
3394 | int rc; | |
3395 | ||
3396 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3397 | if (cmd == NULL) | |
3398 | return -ENOMEM; | |
3399 | ||
3400 | cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); | |
3401 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3402 | cmd->action = cpu_to_le32(!!enable); | |
3403 | ||
3404 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3405 | kfree(cmd); | |
3406 | ||
3407 | return rc; | |
3408 | } | |
3409 | ||
3410 | /* | |
3411 | * CMD_SET_MAC_ADDR. | |
3412 | */ | |
3413 | struct mwl8k_cmd_set_mac_addr { | |
3414 | struct mwl8k_cmd_pkt header; | |
3415 | union { | |
3416 | struct { | |
3417 | __le16 mac_type; | |
3418 | __u8 mac_addr[ETH_ALEN]; | |
3419 | } mbss; | |
3420 | __u8 mac_addr[ETH_ALEN]; | |
3421 | }; | |
3422 | } __packed; | |
3423 | ||
3424 | #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0 | |
3425 | #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1 | |
3426 | #define MWL8K_MAC_TYPE_PRIMARY_AP 2 | |
3427 | #define MWL8K_MAC_TYPE_SECONDARY_AP 3 | |
3428 | ||
3429 | static int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw, | |
3430 | struct ieee80211_vif *vif, u8 *mac) | |
3431 | { | |
3432 | struct mwl8k_priv *priv = hw->priv; | |
3433 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
3434 | struct mwl8k_cmd_set_mac_addr *cmd; | |
3435 | int mac_type; | |
3436 | int rc; | |
3437 | ||
3438 | mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; | |
3439 | if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) { | |
3440 | if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported)) | |
3441 | mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT; | |
3442 | else | |
3443 | mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT; | |
3444 | } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) { | |
3445 | if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported)) | |
3446 | mac_type = MWL8K_MAC_TYPE_PRIMARY_AP; | |
3447 | else | |
3448 | mac_type = MWL8K_MAC_TYPE_SECONDARY_AP; | |
3449 | } | |
3450 | ||
3451 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3452 | if (cmd == NULL) | |
3453 | return -ENOMEM; | |
3454 | ||
3455 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR); | |
3456 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3457 | if (priv->ap_fw) { | |
3458 | cmd->mbss.mac_type = cpu_to_le16(mac_type); | |
3459 | memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN); | |
3460 | } else { | |
3461 | memcpy(cmd->mac_addr, mac, ETH_ALEN); | |
3462 | } | |
3463 | ||
3464 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
3465 | kfree(cmd); | |
3466 | ||
3467 | return rc; | |
3468 | } | |
3469 | ||
3470 | /* | |
3471 | * CMD_SET_RATEADAPT_MODE. | |
3472 | */ | |
3473 | struct mwl8k_cmd_set_rate_adapt_mode { | |
3474 | struct mwl8k_cmd_pkt header; | |
3475 | __le16 action; | |
3476 | __le16 mode; | |
3477 | } __packed; | |
3478 | ||
3479 | static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode) | |
3480 | { | |
3481 | struct mwl8k_cmd_set_rate_adapt_mode *cmd; | |
3482 | int rc; | |
3483 | ||
3484 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3485 | if (cmd == NULL) | |
3486 | return -ENOMEM; | |
3487 | ||
3488 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); | |
3489 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3490 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
3491 | cmd->mode = cpu_to_le16(mode); | |
3492 | ||
3493 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3494 | kfree(cmd); | |
3495 | ||
3496 | return rc; | |
3497 | } | |
3498 | ||
3499 | /* | |
3500 | * CMD_GET_WATCHDOG_BITMAP. | |
3501 | */ | |
3502 | struct mwl8k_cmd_get_watchdog_bitmap { | |
3503 | struct mwl8k_cmd_pkt header; | |
3504 | u8 bitmap; | |
3505 | } __packed; | |
3506 | ||
3507 | static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap) | |
3508 | { | |
3509 | struct mwl8k_cmd_get_watchdog_bitmap *cmd; | |
3510 | int rc; | |
3511 | ||
3512 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3513 | if (cmd == NULL) | |
3514 | return -ENOMEM; | |
3515 | ||
3516 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP); | |
3517 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3518 | ||
3519 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3520 | if (!rc) | |
3521 | *bitmap = cmd->bitmap; | |
3522 | ||
3523 | kfree(cmd); | |
3524 | ||
3525 | return rc; | |
3526 | } | |
3527 | ||
3528 | #define INVALID_BA 0xAA | |
3529 | static void mwl8k_watchdog_ba_events(struct work_struct *work) | |
3530 | { | |
3531 | int rc; | |
3532 | u8 bitmap = 0, stream_index; | |
3533 | struct mwl8k_ampdu_stream *streams; | |
3534 | struct mwl8k_priv *priv = | |
3535 | container_of(work, struct mwl8k_priv, watchdog_ba_handle); | |
3536 | ||
3537 | rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap); | |
3538 | if (rc) | |
3539 | return; | |
3540 | ||
3541 | if (bitmap == INVALID_BA) | |
3542 | return; | |
3543 | ||
3544 | /* the bitmap is the hw queue number. Map it to the ampdu queue. */ | |
3545 | stream_index = bitmap - MWL8K_TX_WMM_QUEUES; | |
3546 | ||
3547 | BUG_ON(stream_index >= priv->num_ampdu_queues); | |
3548 | ||
3549 | streams = &priv->ampdu[stream_index]; | |
3550 | ||
3551 | if (streams->state == AMPDU_STREAM_ACTIVE) | |
3552 | ieee80211_stop_tx_ba_session(streams->sta, streams->tid); | |
3553 | ||
3554 | return; | |
3555 | } | |
3556 | ||
3557 | ||
3558 | /* | |
3559 | * CMD_BSS_START. | |
3560 | */ | |
3561 | struct mwl8k_cmd_bss_start { | |
3562 | struct mwl8k_cmd_pkt header; | |
3563 | __le32 enable; | |
3564 | } __packed; | |
3565 | ||
3566 | static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw, | |
3567 | struct ieee80211_vif *vif, int enable) | |
3568 | { | |
3569 | struct mwl8k_cmd_bss_start *cmd; | |
3570 | int rc; | |
3571 | ||
3572 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3573 | if (cmd == NULL) | |
3574 | return -ENOMEM; | |
3575 | ||
3576 | cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START); | |
3577 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3578 | cmd->enable = cpu_to_le32(enable); | |
3579 | ||
3580 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
3581 | kfree(cmd); | |
3582 | ||
3583 | return rc; | |
3584 | } | |
3585 | ||
3586 | /* | |
3587 | * CMD_BASTREAM. | |
3588 | */ | |
3589 | ||
3590 | /* | |
3591 | * UPSTREAM is tx direction | |
3592 | */ | |
3593 | #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00 | |
3594 | #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01 | |
3595 | ||
3596 | enum ba_stream_action_type { | |
3597 | MWL8K_BA_CREATE, | |
3598 | MWL8K_BA_UPDATE, | |
3599 | MWL8K_BA_DESTROY, | |
3600 | MWL8K_BA_FLUSH, | |
3601 | MWL8K_BA_CHECK, | |
3602 | }; | |
3603 | ||
3604 | ||
3605 | struct mwl8k_create_ba_stream { | |
3606 | __le32 flags; | |
3607 | __le32 idle_thrs; | |
3608 | __le32 bar_thrs; | |
3609 | __le32 window_size; | |
3610 | u8 peer_mac_addr[6]; | |
3611 | u8 dialog_token; | |
3612 | u8 tid; | |
3613 | u8 queue_id; | |
3614 | u8 param_info; | |
3615 | __le32 ba_context; | |
3616 | u8 reset_seq_no_flag; | |
3617 | __le16 curr_seq_no; | |
3618 | u8 sta_src_mac_addr[6]; | |
3619 | } __packed; | |
3620 | ||
3621 | struct mwl8k_destroy_ba_stream { | |
3622 | __le32 flags; | |
3623 | __le32 ba_context; | |
3624 | } __packed; | |
3625 | ||
3626 | struct mwl8k_cmd_bastream { | |
3627 | struct mwl8k_cmd_pkt header; | |
3628 | __le32 action; | |
3629 | union { | |
3630 | struct mwl8k_create_ba_stream create_params; | |
3631 | struct mwl8k_destroy_ba_stream destroy_params; | |
3632 | }; | |
3633 | } __packed; | |
3634 | ||
3635 | static int | |
3636 | mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream) | |
3637 | { | |
3638 | struct mwl8k_cmd_bastream *cmd; | |
3639 | int rc; | |
3640 | ||
3641 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3642 | if (cmd == NULL) | |
3643 | return -ENOMEM; | |
3644 | ||
3645 | cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); | |
3646 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3647 | ||
3648 | cmd->action = cpu_to_le32(MWL8K_BA_CHECK); | |
3649 | ||
3650 | cmd->create_params.queue_id = stream->idx; | |
3651 | memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr, | |
3652 | ETH_ALEN); | |
3653 | cmd->create_params.tid = stream->tid; | |
3654 | ||
3655 | cmd->create_params.flags = | |
3656 | cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) | | |
3657 | cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM); | |
3658 | ||
3659 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3660 | ||
3661 | kfree(cmd); | |
3662 | ||
3663 | return rc; | |
3664 | } | |
3665 | ||
3666 | static int | |
3667 | mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream, | |
3668 | u8 buf_size) | |
3669 | { | |
3670 | struct mwl8k_cmd_bastream *cmd; | |
3671 | int rc; | |
3672 | ||
3673 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3674 | if (cmd == NULL) | |
3675 | return -ENOMEM; | |
3676 | ||
3677 | ||
3678 | cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); | |
3679 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3680 | ||
3681 | cmd->action = cpu_to_le32(MWL8K_BA_CREATE); | |
3682 | ||
3683 | cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size); | |
3684 | cmd->create_params.window_size = cpu_to_le32((u32)buf_size); | |
3685 | cmd->create_params.queue_id = stream->idx; | |
3686 | ||
3687 | memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN); | |
3688 | cmd->create_params.tid = stream->tid; | |
3689 | cmd->create_params.curr_seq_no = cpu_to_le16(0); | |
3690 | cmd->create_params.reset_seq_no_flag = 1; | |
3691 | ||
3692 | cmd->create_params.param_info = | |
3693 | (stream->sta->ht_cap.ampdu_factor & | |
3694 | IEEE80211_HT_AMPDU_PARM_FACTOR) | | |
3695 | ((stream->sta->ht_cap.ampdu_density << 2) & | |
3696 | IEEE80211_HT_AMPDU_PARM_DENSITY); | |
3697 | ||
3698 | cmd->create_params.flags = | |
3699 | cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE | | |
3700 | BASTREAM_FLAG_DIRECTION_UPSTREAM); | |
3701 | ||
3702 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
3703 | ||
3704 | wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n", | |
3705 | stream->sta->addr, stream->tid); | |
3706 | kfree(cmd); | |
3707 | ||
3708 | return rc; | |
3709 | } | |
3710 | ||
3711 | static void mwl8k_destroy_ba(struct ieee80211_hw *hw, | |
3712 | struct mwl8k_ampdu_stream *stream) | |
3713 | { | |
3714 | struct mwl8k_cmd_bastream *cmd; | |
3715 | ||
3716 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3717 | if (cmd == NULL) | |
3718 | return; | |
3719 | ||
3720 | cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM); | |
3721 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3722 | cmd->action = cpu_to_le32(MWL8K_BA_DESTROY); | |
3723 | ||
3724 | cmd->destroy_params.ba_context = cpu_to_le32(stream->idx); | |
3725 | mwl8k_post_cmd(hw, &cmd->header); | |
3726 | ||
3727 | wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", stream->idx); | |
3728 | ||
3729 | kfree(cmd); | |
3730 | } | |
3731 | ||
3732 | /* | |
3733 | * CMD_SET_NEW_STN. | |
3734 | */ | |
3735 | struct mwl8k_cmd_set_new_stn { | |
3736 | struct mwl8k_cmd_pkt header; | |
3737 | __le16 aid; | |
3738 | __u8 mac_addr[6]; | |
3739 | __le16 stn_id; | |
3740 | __le16 action; | |
3741 | __le16 rsvd; | |
3742 | __le32 legacy_rates; | |
3743 | __u8 ht_rates[4]; | |
3744 | __le16 cap_info; | |
3745 | __le16 ht_capabilities_info; | |
3746 | __u8 mac_ht_param_info; | |
3747 | __u8 rev; | |
3748 | __u8 control_channel; | |
3749 | __u8 add_channel; | |
3750 | __le16 op_mode; | |
3751 | __le16 stbc; | |
3752 | __u8 add_qos_info; | |
3753 | __u8 is_qos_sta; | |
3754 | __le32 fw_sta_ptr; | |
3755 | } __packed; | |
3756 | ||
3757 | #define MWL8K_STA_ACTION_ADD 0 | |
3758 | #define MWL8K_STA_ACTION_REMOVE 2 | |
3759 | ||
3760 | static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw, | |
3761 | struct ieee80211_vif *vif, | |
3762 | struct ieee80211_sta *sta) | |
3763 | { | |
3764 | struct mwl8k_cmd_set_new_stn *cmd; | |
3765 | u32 rates; | |
3766 | int rc; | |
3767 | ||
3768 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3769 | if (cmd == NULL) | |
3770 | return -ENOMEM; | |
3771 | ||
3772 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); | |
3773 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3774 | cmd->aid = cpu_to_le16(sta->aid); | |
3775 | memcpy(cmd->mac_addr, sta->addr, ETH_ALEN); | |
3776 | cmd->stn_id = cpu_to_le16(sta->aid); | |
3777 | cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD); | |
3778 | if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) | |
3779 | rates = sta->supp_rates[IEEE80211_BAND_2GHZ]; | |
3780 | else | |
3781 | rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5; | |
3782 | cmd->legacy_rates = cpu_to_le32(rates); | |
3783 | if (sta->ht_cap.ht_supported) { | |
3784 | cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0]; | |
3785 | cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1]; | |
3786 | cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2]; | |
3787 | cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3]; | |
3788 | cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap); | |
3789 | cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) | | |
3790 | ((sta->ht_cap.ampdu_density & 7) << 2); | |
3791 | cmd->is_qos_sta = 1; | |
3792 | } | |
3793 | ||
3794 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
3795 | kfree(cmd); | |
3796 | ||
3797 | return rc; | |
3798 | } | |
3799 | ||
3800 | static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw, | |
3801 | struct ieee80211_vif *vif) | |
3802 | { | |
3803 | struct mwl8k_cmd_set_new_stn *cmd; | |
3804 | int rc; | |
3805 | ||
3806 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3807 | if (cmd == NULL) | |
3808 | return -ENOMEM; | |
3809 | ||
3810 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); | |
3811 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3812 | memcpy(cmd->mac_addr, vif->addr, ETH_ALEN); | |
3813 | ||
3814 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
3815 | kfree(cmd); | |
3816 | ||
3817 | return rc; | |
3818 | } | |
3819 | ||
3820 | static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw, | |
3821 | struct ieee80211_vif *vif, u8 *addr) | |
3822 | { | |
3823 | struct mwl8k_cmd_set_new_stn *cmd; | |
3824 | int rc; | |
3825 | ||
3826 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3827 | if (cmd == NULL) | |
3828 | return -ENOMEM; | |
3829 | ||
3830 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN); | |
3831 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3832 | memcpy(cmd->mac_addr, addr, ETH_ALEN); | |
3833 | cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE); | |
3834 | ||
3835 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
3836 | kfree(cmd); | |
3837 | ||
3838 | return rc; | |
3839 | } | |
3840 | ||
3841 | /* | |
3842 | * CMD_UPDATE_ENCRYPTION. | |
3843 | */ | |
3844 | ||
3845 | #define MAX_ENCR_KEY_LENGTH 16 | |
3846 | #define MIC_KEY_LENGTH 8 | |
3847 | ||
3848 | struct mwl8k_cmd_update_encryption { | |
3849 | struct mwl8k_cmd_pkt header; | |
3850 | ||
3851 | __le32 action; | |
3852 | __le32 reserved; | |
3853 | __u8 mac_addr[6]; | |
3854 | __u8 encr_type; | |
3855 | ||
3856 | } __packed; | |
3857 | ||
3858 | struct mwl8k_cmd_set_key { | |
3859 | struct mwl8k_cmd_pkt header; | |
3860 | ||
3861 | __le32 action; | |
3862 | __le32 reserved; | |
3863 | __le16 length; | |
3864 | __le16 key_type_id; | |
3865 | __le32 key_info; | |
3866 | __le32 key_id; | |
3867 | __le16 key_len; | |
3868 | __u8 key_material[MAX_ENCR_KEY_LENGTH]; | |
3869 | __u8 tkip_tx_mic_key[MIC_KEY_LENGTH]; | |
3870 | __u8 tkip_rx_mic_key[MIC_KEY_LENGTH]; | |
3871 | __le16 tkip_rsc_low; | |
3872 | __le32 tkip_rsc_high; | |
3873 | __le16 tkip_tsc_low; | |
3874 | __le32 tkip_tsc_high; | |
3875 | __u8 mac_addr[6]; | |
3876 | } __packed; | |
3877 | ||
3878 | enum { | |
3879 | MWL8K_ENCR_ENABLE, | |
3880 | MWL8K_ENCR_SET_KEY, | |
3881 | MWL8K_ENCR_REMOVE_KEY, | |
3882 | MWL8K_ENCR_SET_GROUP_KEY, | |
3883 | }; | |
3884 | ||
3885 | #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0 | |
3886 | #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1 | |
3887 | #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4 | |
3888 | #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7 | |
3889 | #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8 | |
3890 | ||
3891 | enum { | |
3892 | MWL8K_ALG_WEP, | |
3893 | MWL8K_ALG_TKIP, | |
3894 | MWL8K_ALG_CCMP, | |
3895 | }; | |
3896 | ||
3897 | #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004 | |
3898 | #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008 | |
3899 | #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040 | |
3900 | #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000 | |
3901 | #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000 | |
3902 | ||
3903 | static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw, | |
3904 | struct ieee80211_vif *vif, | |
3905 | u8 *addr, | |
3906 | u8 encr_type) | |
3907 | { | |
3908 | struct mwl8k_cmd_update_encryption *cmd; | |
3909 | int rc; | |
3910 | ||
3911 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3912 | if (cmd == NULL) | |
3913 | return -ENOMEM; | |
3914 | ||
3915 | cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); | |
3916 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3917 | cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE); | |
3918 | memcpy(cmd->mac_addr, addr, ETH_ALEN); | |
3919 | cmd->encr_type = encr_type; | |
3920 | ||
3921 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
3922 | kfree(cmd); | |
3923 | ||
3924 | return rc; | |
3925 | } | |
3926 | ||
3927 | static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd, | |
3928 | u8 *addr, | |
3929 | struct ieee80211_key_conf *key) | |
3930 | { | |
3931 | cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION); | |
3932 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
3933 | cmd->length = cpu_to_le16(sizeof(*cmd) - | |
3934 | offsetof(struct mwl8k_cmd_set_key, length)); | |
3935 | cmd->key_id = cpu_to_le32(key->keyidx); | |
3936 | cmd->key_len = cpu_to_le16(key->keylen); | |
3937 | memcpy(cmd->mac_addr, addr, ETH_ALEN); | |
3938 | ||
3939 | switch (key->cipher) { | |
3940 | case WLAN_CIPHER_SUITE_WEP40: | |
3941 | case WLAN_CIPHER_SUITE_WEP104: | |
3942 | cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP); | |
3943 | if (key->keyidx == 0) | |
3944 | cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY); | |
3945 | ||
3946 | break; | |
3947 | case WLAN_CIPHER_SUITE_TKIP: | |
3948 | cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP); | |
3949 | cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
3950 | ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) | |
3951 | : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); | |
3952 | cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID | |
3953 | | MWL8K_KEY_FLAG_TSC_VALID); | |
3954 | break; | |
3955 | case WLAN_CIPHER_SUITE_CCMP: | |
3956 | cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP); | |
3957 | cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
3958 | ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE) | |
3959 | : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY); | |
3960 | break; | |
3961 | default: | |
3962 | return -ENOTSUPP; | |
3963 | } | |
3964 | ||
3965 | return 0; | |
3966 | } | |
3967 | ||
3968 | static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw, | |
3969 | struct ieee80211_vif *vif, | |
3970 | u8 *addr, | |
3971 | struct ieee80211_key_conf *key) | |
3972 | { | |
3973 | struct mwl8k_cmd_set_key *cmd; | |
3974 | int rc; | |
3975 | int keymlen; | |
3976 | u32 action; | |
3977 | u8 idx; | |
3978 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
3979 | ||
3980 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
3981 | if (cmd == NULL) | |
3982 | return -ENOMEM; | |
3983 | ||
3984 | rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); | |
3985 | if (rc < 0) | |
3986 | goto done; | |
3987 | ||
3988 | idx = key->keyidx; | |
3989 | ||
3990 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
3991 | action = MWL8K_ENCR_SET_KEY; | |
3992 | else | |
3993 | action = MWL8K_ENCR_SET_GROUP_KEY; | |
3994 | ||
3995 | switch (key->cipher) { | |
3996 | case WLAN_CIPHER_SUITE_WEP40: | |
3997 | case WLAN_CIPHER_SUITE_WEP104: | |
3998 | if (!mwl8k_vif->wep_key_conf[idx].enabled) { | |
3999 | memcpy(mwl8k_vif->wep_key_conf[idx].key, key, | |
4000 | sizeof(*key) + key->keylen); | |
4001 | mwl8k_vif->wep_key_conf[idx].enabled = 1; | |
4002 | } | |
4003 | ||
4004 | keymlen = key->keylen; | |
4005 | action = MWL8K_ENCR_SET_KEY; | |
4006 | break; | |
4007 | case WLAN_CIPHER_SUITE_TKIP: | |
4008 | keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH; | |
4009 | break; | |
4010 | case WLAN_CIPHER_SUITE_CCMP: | |
4011 | keymlen = key->keylen; | |
4012 | break; | |
4013 | default: | |
4014 | rc = -ENOTSUPP; | |
4015 | goto done; | |
4016 | } | |
4017 | ||
4018 | memcpy(cmd->key_material, key->key, keymlen); | |
4019 | cmd->action = cpu_to_le32(action); | |
4020 | ||
4021 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
4022 | done: | |
4023 | kfree(cmd); | |
4024 | ||
4025 | return rc; | |
4026 | } | |
4027 | ||
4028 | static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw, | |
4029 | struct ieee80211_vif *vif, | |
4030 | u8 *addr, | |
4031 | struct ieee80211_key_conf *key) | |
4032 | { | |
4033 | struct mwl8k_cmd_set_key *cmd; | |
4034 | int rc; | |
4035 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
4036 | ||
4037 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
4038 | if (cmd == NULL) | |
4039 | return -ENOMEM; | |
4040 | ||
4041 | rc = mwl8k_encryption_set_cmd_info(cmd, addr, key); | |
4042 | if (rc < 0) | |
4043 | goto done; | |
4044 | ||
4045 | if (key->cipher == WLAN_CIPHER_SUITE_WEP40 || | |
4046 | WLAN_CIPHER_SUITE_WEP104) | |
4047 | mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0; | |
4048 | ||
4049 | cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY); | |
4050 | ||
4051 | rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header); | |
4052 | done: | |
4053 | kfree(cmd); | |
4054 | ||
4055 | return rc; | |
4056 | } | |
4057 | ||
4058 | static int mwl8k_set_key(struct ieee80211_hw *hw, | |
4059 | enum set_key_cmd cmd_param, | |
4060 | struct ieee80211_vif *vif, | |
4061 | struct ieee80211_sta *sta, | |
4062 | struct ieee80211_key_conf *key) | |
4063 | { | |
4064 | int rc = 0; | |
4065 | u8 encr_type; | |
4066 | u8 *addr; | |
4067 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
4068 | ||
4069 | if (vif->type == NL80211_IFTYPE_STATION) | |
4070 | return -EOPNOTSUPP; | |
4071 | ||
4072 | if (sta == NULL) | |
4073 | addr = hw->wiphy->perm_addr; | |
4074 | else | |
4075 | addr = sta->addr; | |
4076 | ||
4077 | if (cmd_param == SET_KEY) { | |
4078 | rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key); | |
4079 | if (rc) | |
4080 | goto out; | |
4081 | ||
4082 | if ((key->cipher == WLAN_CIPHER_SUITE_WEP40) | |
4083 | || (key->cipher == WLAN_CIPHER_SUITE_WEP104)) | |
4084 | encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP; | |
4085 | else | |
4086 | encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED; | |
4087 | ||
4088 | rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr, | |
4089 | encr_type); | |
4090 | if (rc) | |
4091 | goto out; | |
4092 | ||
4093 | mwl8k_vif->is_hw_crypto_enabled = true; | |
4094 | ||
4095 | } else { | |
4096 | rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key); | |
4097 | ||
4098 | if (rc) | |
4099 | goto out; | |
4100 | } | |
4101 | out: | |
4102 | return rc; | |
4103 | } | |
4104 | ||
4105 | /* | |
4106 | * CMD_UPDATE_STADB. | |
4107 | */ | |
4108 | struct ewc_ht_info { | |
4109 | __le16 control1; | |
4110 | __le16 control2; | |
4111 | __le16 control3; | |
4112 | } __packed; | |
4113 | ||
4114 | struct peer_capability_info { | |
4115 | /* Peer type - AP vs. STA. */ | |
4116 | __u8 peer_type; | |
4117 | ||
4118 | /* Basic 802.11 capabilities from assoc resp. */ | |
4119 | __le16 basic_caps; | |
4120 | ||
4121 | /* Set if peer supports 802.11n high throughput (HT). */ | |
4122 | __u8 ht_support; | |
4123 | ||
4124 | /* Valid if HT is supported. */ | |
4125 | __le16 ht_caps; | |
4126 | __u8 extended_ht_caps; | |
4127 | struct ewc_ht_info ewc_info; | |
4128 | ||
4129 | /* Legacy rate table. Intersection of our rates and peer rates. */ | |
4130 | __u8 legacy_rates[12]; | |
4131 | ||
4132 | /* HT rate table. Intersection of our rates and peer rates. */ | |
4133 | __u8 ht_rates[16]; | |
4134 | __u8 pad[16]; | |
4135 | ||
4136 | /* If set, interoperability mode, no proprietary extensions. */ | |
4137 | __u8 interop; | |
4138 | __u8 pad2; | |
4139 | __u8 station_id; | |
4140 | __le16 amsdu_enabled; | |
4141 | } __packed; | |
4142 | ||
4143 | struct mwl8k_cmd_update_stadb { | |
4144 | struct mwl8k_cmd_pkt header; | |
4145 | ||
4146 | /* See STADB_ACTION_TYPE */ | |
4147 | __le32 action; | |
4148 | ||
4149 | /* Peer MAC address */ | |
4150 | __u8 peer_addr[ETH_ALEN]; | |
4151 | ||
4152 | __le32 reserved; | |
4153 | ||
4154 | /* Peer info - valid during add/update. */ | |
4155 | struct peer_capability_info peer_info; | |
4156 | } __packed; | |
4157 | ||
4158 | #define MWL8K_STA_DB_MODIFY_ENTRY 1 | |
4159 | #define MWL8K_STA_DB_DEL_ENTRY 2 | |
4160 | ||
4161 | /* Peer Entry flags - used to define the type of the peer node */ | |
4162 | #define MWL8K_PEER_TYPE_ACCESSPOINT 2 | |
4163 | ||
4164 | static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw, | |
4165 | struct ieee80211_vif *vif, | |
4166 | struct ieee80211_sta *sta) | |
4167 | { | |
4168 | struct mwl8k_cmd_update_stadb *cmd; | |
4169 | struct peer_capability_info *p; | |
4170 | u32 rates; | |
4171 | int rc; | |
4172 | ||
4173 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
4174 | if (cmd == NULL) | |
4175 | return -ENOMEM; | |
4176 | ||
4177 | cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); | |
4178 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
4179 | cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY); | |
4180 | memcpy(cmd->peer_addr, sta->addr, ETH_ALEN); | |
4181 | ||
4182 | p = &cmd->peer_info; | |
4183 | p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; | |
4184 | p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability); | |
4185 | p->ht_support = sta->ht_cap.ht_supported; | |
4186 | p->ht_caps = cpu_to_le16(sta->ht_cap.cap); | |
4187 | p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) | | |
4188 | ((sta->ht_cap.ampdu_density & 7) << 2); | |
4189 | if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) | |
4190 | rates = sta->supp_rates[IEEE80211_BAND_2GHZ]; | |
4191 | else | |
4192 | rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5; | |
4193 | legacy_rate_mask_to_array(p->legacy_rates, rates); | |
4194 | memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16); | |
4195 | p->interop = 1; | |
4196 | p->amsdu_enabled = 0; | |
4197 | ||
4198 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
4199 | kfree(cmd); | |
4200 | ||
4201 | return rc ? rc : p->station_id; | |
4202 | } | |
4203 | ||
4204 | static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw, | |
4205 | struct ieee80211_vif *vif, u8 *addr) | |
4206 | { | |
4207 | struct mwl8k_cmd_update_stadb *cmd; | |
4208 | int rc; | |
4209 | ||
4210 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
4211 | if (cmd == NULL) | |
4212 | return -ENOMEM; | |
4213 | ||
4214 | cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); | |
4215 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
4216 | cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY); | |
4217 | memcpy(cmd->peer_addr, addr, ETH_ALEN); | |
4218 | ||
4219 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
4220 | kfree(cmd); | |
4221 | ||
4222 | return rc; | |
4223 | } | |
4224 | ||
4225 | ||
4226 | /* | |
4227 | * Interrupt handling. | |
4228 | */ | |
4229 | static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) | |
4230 | { | |
4231 | struct ieee80211_hw *hw = dev_id; | |
4232 | struct mwl8k_priv *priv = hw->priv; | |
4233 | u32 status; | |
4234 | ||
4235 | status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
4236 | if (!status) | |
4237 | return IRQ_NONE; | |
4238 | ||
4239 | if (status & MWL8K_A2H_INT_TX_DONE) { | |
4240 | status &= ~MWL8K_A2H_INT_TX_DONE; | |
4241 | tasklet_schedule(&priv->poll_tx_task); | |
4242 | } | |
4243 | ||
4244 | if (status & MWL8K_A2H_INT_RX_READY) { | |
4245 | status &= ~MWL8K_A2H_INT_RX_READY; | |
4246 | tasklet_schedule(&priv->poll_rx_task); | |
4247 | } | |
4248 | ||
4249 | if (status & MWL8K_A2H_INT_BA_WATCHDOG) { | |
4250 | status &= ~MWL8K_A2H_INT_BA_WATCHDOG; | |
4251 | ieee80211_queue_work(hw, &priv->watchdog_ba_handle); | |
4252 | } | |
4253 | ||
4254 | if (status) | |
4255 | iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
4256 | ||
4257 | if (status & MWL8K_A2H_INT_OPC_DONE) { | |
4258 | if (priv->hostcmd_wait != NULL) | |
4259 | complete(priv->hostcmd_wait); | |
4260 | } | |
4261 | ||
4262 | if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { | |
4263 | if (!mutex_is_locked(&priv->fw_mutex) && | |
4264 | priv->radio_on && priv->pending_tx_pkts) | |
4265 | mwl8k_tx_start(priv); | |
4266 | } | |
4267 | ||
4268 | return IRQ_HANDLED; | |
4269 | } | |
4270 | ||
4271 | static void mwl8k_tx_poll(unsigned long data) | |
4272 | { | |
4273 | struct ieee80211_hw *hw = (struct ieee80211_hw *)data; | |
4274 | struct mwl8k_priv *priv = hw->priv; | |
4275 | int limit; | |
4276 | int i; | |
4277 | ||
4278 | limit = 32; | |
4279 | ||
4280 | spin_lock_bh(&priv->tx_lock); | |
4281 | ||
4282 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
4283 | limit -= mwl8k_txq_reclaim(hw, i, limit, 0); | |
4284 | ||
4285 | if (!priv->pending_tx_pkts && priv->tx_wait != NULL) { | |
4286 | complete(priv->tx_wait); | |
4287 | priv->tx_wait = NULL; | |
4288 | } | |
4289 | ||
4290 | spin_unlock_bh(&priv->tx_lock); | |
4291 | ||
4292 | if (limit) { | |
4293 | writel(~MWL8K_A2H_INT_TX_DONE, | |
4294 | priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
4295 | } else { | |
4296 | tasklet_schedule(&priv->poll_tx_task); | |
4297 | } | |
4298 | } | |
4299 | ||
4300 | static void mwl8k_rx_poll(unsigned long data) | |
4301 | { | |
4302 | struct ieee80211_hw *hw = (struct ieee80211_hw *)data; | |
4303 | struct mwl8k_priv *priv = hw->priv; | |
4304 | int limit; | |
4305 | ||
4306 | limit = 32; | |
4307 | limit -= rxq_process(hw, 0, limit); | |
4308 | limit -= rxq_refill(hw, 0, limit); | |
4309 | ||
4310 | if (limit) { | |
4311 | writel(~MWL8K_A2H_INT_RX_READY, | |
4312 | priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
4313 | } else { | |
4314 | tasklet_schedule(&priv->poll_rx_task); | |
4315 | } | |
4316 | } | |
4317 | ||
4318 | ||
4319 | /* | |
4320 | * Core driver operations. | |
4321 | */ | |
4322 | static void mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) | |
4323 | { | |
4324 | struct mwl8k_priv *priv = hw->priv; | |
4325 | int index = skb_get_queue_mapping(skb); | |
4326 | ||
4327 | if (!priv->radio_on) { | |
4328 | wiphy_debug(hw->wiphy, | |
4329 | "dropped TX frame since radio disabled\n"); | |
4330 | dev_kfree_skb(skb); | |
4331 | return; | |
4332 | } | |
4333 | ||
4334 | mwl8k_txq_xmit(hw, index, skb); | |
4335 | } | |
4336 | ||
4337 | static int mwl8k_start(struct ieee80211_hw *hw) | |
4338 | { | |
4339 | struct mwl8k_priv *priv = hw->priv; | |
4340 | int rc; | |
4341 | ||
4342 | rc = request_irq(priv->pdev->irq, mwl8k_interrupt, | |
4343 | IRQF_SHARED, MWL8K_NAME, hw); | |
4344 | if (rc) { | |
4345 | priv->irq = -1; | |
4346 | wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); | |
4347 | return -EIO; | |
4348 | } | |
4349 | priv->irq = priv->pdev->irq; | |
4350 | ||
4351 | /* Enable TX reclaim and RX tasklets. */ | |
4352 | tasklet_enable(&priv->poll_tx_task); | |
4353 | tasklet_enable(&priv->poll_rx_task); | |
4354 | ||
4355 | /* Enable interrupts */ | |
4356 | iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
4357 | iowrite32(MWL8K_A2H_EVENTS, | |
4358 | priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); | |
4359 | ||
4360 | rc = mwl8k_fw_lock(hw); | |
4361 | if (!rc) { | |
4362 | rc = mwl8k_cmd_radio_enable(hw); | |
4363 | ||
4364 | if (!priv->ap_fw) { | |
4365 | if (!rc) | |
4366 | rc = mwl8k_cmd_enable_sniffer(hw, 0); | |
4367 | ||
4368 | if (!rc) | |
4369 | rc = mwl8k_cmd_set_pre_scan(hw); | |
4370 | ||
4371 | if (!rc) | |
4372 | rc = mwl8k_cmd_set_post_scan(hw, | |
4373 | "\x00\x00\x00\x00\x00\x00"); | |
4374 | } | |
4375 | ||
4376 | if (!rc) | |
4377 | rc = mwl8k_cmd_set_rateadapt_mode(hw, 0); | |
4378 | ||
4379 | if (!rc) | |
4380 | rc = mwl8k_cmd_set_wmm_mode(hw, 0); | |
4381 | ||
4382 | mwl8k_fw_unlock(hw); | |
4383 | } | |
4384 | ||
4385 | if (rc) { | |
4386 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
4387 | free_irq(priv->pdev->irq, hw); | |
4388 | priv->irq = -1; | |
4389 | tasklet_disable(&priv->poll_tx_task); | |
4390 | tasklet_disable(&priv->poll_rx_task); | |
4391 | } | |
4392 | ||
4393 | return rc; | |
4394 | } | |
4395 | ||
4396 | static void mwl8k_stop(struct ieee80211_hw *hw) | |
4397 | { | |
4398 | struct mwl8k_priv *priv = hw->priv; | |
4399 | int i; | |
4400 | ||
4401 | mwl8k_cmd_radio_disable(hw); | |
4402 | ||
4403 | ieee80211_stop_queues(hw); | |
4404 | ||
4405 | /* Disable interrupts */ | |
4406 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
4407 | if (priv->irq != -1) { | |
4408 | free_irq(priv->pdev->irq, hw); | |
4409 | priv->irq = -1; | |
4410 | } | |
4411 | ||
4412 | /* Stop finalize join worker */ | |
4413 | cancel_work_sync(&priv->finalize_join_worker); | |
4414 | cancel_work_sync(&priv->watchdog_ba_handle); | |
4415 | if (priv->beacon_skb != NULL) | |
4416 | dev_kfree_skb(priv->beacon_skb); | |
4417 | ||
4418 | /* Stop TX reclaim and RX tasklets. */ | |
4419 | tasklet_disable(&priv->poll_tx_task); | |
4420 | tasklet_disable(&priv->poll_rx_task); | |
4421 | ||
4422 | /* Return all skbs to mac80211 */ | |
4423 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
4424 | mwl8k_txq_reclaim(hw, i, INT_MAX, 1); | |
4425 | } | |
4426 | ||
4427 | static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image); | |
4428 | ||
4429 | static int mwl8k_add_interface(struct ieee80211_hw *hw, | |
4430 | struct ieee80211_vif *vif) | |
4431 | { | |
4432 | struct mwl8k_priv *priv = hw->priv; | |
4433 | struct mwl8k_vif *mwl8k_vif; | |
4434 | u32 macids_supported; | |
4435 | int macid, rc; | |
4436 | struct mwl8k_device_info *di; | |
4437 | ||
4438 | /* | |
4439 | * Reject interface creation if sniffer mode is active, as | |
4440 | * STA operation is mutually exclusive with hardware sniffer | |
4441 | * mode. (Sniffer mode is only used on STA firmware.) | |
4442 | */ | |
4443 | if (priv->sniffer_enabled) { | |
4444 | wiphy_info(hw->wiphy, | |
4445 | "unable to create STA interface because sniffer mode is enabled\n"); | |
4446 | return -EINVAL; | |
4447 | } | |
4448 | ||
4449 | di = priv->device_info; | |
4450 | switch (vif->type) { | |
4451 | case NL80211_IFTYPE_AP: | |
4452 | if (!priv->ap_fw && di->fw_image_ap) { | |
4453 | /* we must load the ap fw to meet this request */ | |
4454 | if (!list_empty(&priv->vif_list)) | |
4455 | return -EBUSY; | |
4456 | rc = mwl8k_reload_firmware(hw, di->fw_image_ap); | |
4457 | if (rc) | |
4458 | return rc; | |
4459 | } | |
4460 | macids_supported = priv->ap_macids_supported; | |
4461 | break; | |
4462 | case NL80211_IFTYPE_STATION: | |
4463 | if (priv->ap_fw && di->fw_image_sta) { | |
4464 | /* we must load the sta fw to meet this request */ | |
4465 | if (!list_empty(&priv->vif_list)) | |
4466 | return -EBUSY; | |
4467 | rc = mwl8k_reload_firmware(hw, di->fw_image_sta); | |
4468 | if (rc) | |
4469 | return rc; | |
4470 | } | |
4471 | macids_supported = priv->sta_macids_supported; | |
4472 | break; | |
4473 | default: | |
4474 | return -EINVAL; | |
4475 | } | |
4476 | ||
4477 | macid = ffs(macids_supported & ~priv->macids_used); | |
4478 | if (!macid--) | |
4479 | return -EBUSY; | |
4480 | ||
4481 | /* Setup driver private area. */ | |
4482 | mwl8k_vif = MWL8K_VIF(vif); | |
4483 | memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); | |
4484 | mwl8k_vif->vif = vif; | |
4485 | mwl8k_vif->macid = macid; | |
4486 | mwl8k_vif->seqno = 0; | |
4487 | memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN); | |
4488 | mwl8k_vif->is_hw_crypto_enabled = false; | |
4489 | ||
4490 | /* Set the mac address. */ | |
4491 | mwl8k_cmd_set_mac_addr(hw, vif, vif->addr); | |
4492 | ||
4493 | if (priv->ap_fw) | |
4494 | mwl8k_cmd_set_new_stn_add_self(hw, vif); | |
4495 | ||
4496 | priv->macids_used |= 1 << mwl8k_vif->macid; | |
4497 | list_add_tail(&mwl8k_vif->list, &priv->vif_list); | |
4498 | ||
4499 | return 0; | |
4500 | } | |
4501 | ||
4502 | static void mwl8k_remove_interface(struct ieee80211_hw *hw, | |
4503 | struct ieee80211_vif *vif) | |
4504 | { | |
4505 | struct mwl8k_priv *priv = hw->priv; | |
4506 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
4507 | ||
4508 | if (priv->ap_fw) | |
4509 | mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr); | |
4510 | ||
4511 | mwl8k_cmd_set_mac_addr(hw, vif, "\x00\x00\x00\x00\x00\x00"); | |
4512 | ||
4513 | priv->macids_used &= ~(1 << mwl8k_vif->macid); | |
4514 | list_del(&mwl8k_vif->list); | |
4515 | } | |
4516 | ||
4517 | static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) | |
4518 | { | |
4519 | struct ieee80211_conf *conf = &hw->conf; | |
4520 | struct mwl8k_priv *priv = hw->priv; | |
4521 | int rc; | |
4522 | ||
4523 | if (conf->flags & IEEE80211_CONF_IDLE) { | |
4524 | mwl8k_cmd_radio_disable(hw); | |
4525 | return 0; | |
4526 | } | |
4527 | ||
4528 | rc = mwl8k_fw_lock(hw); | |
4529 | if (rc) | |
4530 | return rc; | |
4531 | ||
4532 | rc = mwl8k_cmd_radio_enable(hw); | |
4533 | if (rc) | |
4534 | goto out; | |
4535 | ||
4536 | rc = mwl8k_cmd_set_rf_channel(hw, conf); | |
4537 | if (rc) | |
4538 | goto out; | |
4539 | ||
4540 | if (conf->power_level > 18) | |
4541 | conf->power_level = 18; | |
4542 | ||
4543 | if (priv->ap_fw) { | |
4544 | ||
4545 | if (conf->flags & IEEE80211_CONF_CHANGE_POWER) { | |
4546 | rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level); | |
4547 | if (rc) | |
4548 | goto out; | |
4549 | } | |
4550 | ||
4551 | rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3); | |
4552 | if (rc) | |
4553 | wiphy_warn(hw->wiphy, "failed to set # of RX antennas"); | |
4554 | rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7); | |
4555 | if (rc) | |
4556 | wiphy_warn(hw->wiphy, "failed to set # of TX antennas"); | |
4557 | ||
4558 | } else { | |
4559 | rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level); | |
4560 | if (rc) | |
4561 | goto out; | |
4562 | rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7); | |
4563 | } | |
4564 | ||
4565 | out: | |
4566 | mwl8k_fw_unlock(hw); | |
4567 | ||
4568 | return rc; | |
4569 | } | |
4570 | ||
4571 | static void | |
4572 | mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
4573 | struct ieee80211_bss_conf *info, u32 changed) | |
4574 | { | |
4575 | struct mwl8k_priv *priv = hw->priv; | |
4576 | u32 ap_legacy_rates = 0; | |
4577 | u8 ap_mcs_rates[16]; | |
4578 | int rc; | |
4579 | ||
4580 | if (mwl8k_fw_lock(hw)) | |
4581 | return; | |
4582 | ||
4583 | /* | |
4584 | * No need to capture a beacon if we're no longer associated. | |
4585 | */ | |
4586 | if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc) | |
4587 | priv->capture_beacon = false; | |
4588 | ||
4589 | /* | |
4590 | * Get the AP's legacy and MCS rates. | |
4591 | */ | |
4592 | if (vif->bss_conf.assoc) { | |
4593 | struct ieee80211_sta *ap; | |
4594 | ||
4595 | rcu_read_lock(); | |
4596 | ||
4597 | ap = ieee80211_find_sta(vif, vif->bss_conf.bssid); | |
4598 | if (ap == NULL) { | |
4599 | rcu_read_unlock(); | |
4600 | goto out; | |
4601 | } | |
4602 | ||
4603 | if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) { | |
4604 | ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ]; | |
4605 | } else { | |
4606 | ap_legacy_rates = | |
4607 | ap->supp_rates[IEEE80211_BAND_5GHZ] << 5; | |
4608 | } | |
4609 | memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16); | |
4610 | ||
4611 | rcu_read_unlock(); | |
4612 | } | |
4613 | ||
4614 | if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc) { | |
4615 | rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates); | |
4616 | if (rc) | |
4617 | goto out; | |
4618 | ||
4619 | rc = mwl8k_cmd_use_fixed_rate_sta(hw); | |
4620 | if (rc) | |
4621 | goto out; | |
4622 | } | |
4623 | ||
4624 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { | |
4625 | rc = mwl8k_set_radio_preamble(hw, | |
4626 | vif->bss_conf.use_short_preamble); | |
4627 | if (rc) | |
4628 | goto out; | |
4629 | } | |
4630 | ||
4631 | if (changed & BSS_CHANGED_ERP_SLOT) { | |
4632 | rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot); | |
4633 | if (rc) | |
4634 | goto out; | |
4635 | } | |
4636 | ||
4637 | if (vif->bss_conf.assoc && | |
4638 | (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT | | |
4639 | BSS_CHANGED_HT))) { | |
4640 | rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates); | |
4641 | if (rc) | |
4642 | goto out; | |
4643 | } | |
4644 | ||
4645 | if (vif->bss_conf.assoc && | |
4646 | (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) { | |
4647 | /* | |
4648 | * Finalize the join. Tell rx handler to process | |
4649 | * next beacon from our BSSID. | |
4650 | */ | |
4651 | memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN); | |
4652 | priv->capture_beacon = true; | |
4653 | } | |
4654 | ||
4655 | out: | |
4656 | mwl8k_fw_unlock(hw); | |
4657 | } | |
4658 | ||
4659 | static void | |
4660 | mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
4661 | struct ieee80211_bss_conf *info, u32 changed) | |
4662 | { | |
4663 | int rc; | |
4664 | ||
4665 | if (mwl8k_fw_lock(hw)) | |
4666 | return; | |
4667 | ||
4668 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { | |
4669 | rc = mwl8k_set_radio_preamble(hw, | |
4670 | vif->bss_conf.use_short_preamble); | |
4671 | if (rc) | |
4672 | goto out; | |
4673 | } | |
4674 | ||
4675 | if (changed & BSS_CHANGED_BASIC_RATES) { | |
4676 | int idx; | |
4677 | int rate; | |
4678 | ||
4679 | /* | |
4680 | * Use lowest supported basic rate for multicasts | |
4681 | * and management frames (such as probe responses -- | |
4682 | * beacons will always go out at 1 Mb/s). | |
4683 | */ | |
4684 | idx = ffs(vif->bss_conf.basic_rates); | |
4685 | if (idx) | |
4686 | idx--; | |
4687 | ||
4688 | if (hw->conf.channel->band == IEEE80211_BAND_2GHZ) | |
4689 | rate = mwl8k_rates_24[idx].hw_value; | |
4690 | else | |
4691 | rate = mwl8k_rates_50[idx].hw_value; | |
4692 | ||
4693 | mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate); | |
4694 | } | |
4695 | ||
4696 | if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) { | |
4697 | struct sk_buff *skb; | |
4698 | ||
4699 | skb = ieee80211_beacon_get(hw, vif); | |
4700 | if (skb != NULL) { | |
4701 | mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len); | |
4702 | kfree_skb(skb); | |
4703 | } | |
4704 | } | |
4705 | ||
4706 | if (changed & BSS_CHANGED_BEACON_ENABLED) | |
4707 | mwl8k_cmd_bss_start(hw, vif, info->enable_beacon); | |
4708 | ||
4709 | out: | |
4710 | mwl8k_fw_unlock(hw); | |
4711 | } | |
4712 | ||
4713 | static void | |
4714 | mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
4715 | struct ieee80211_bss_conf *info, u32 changed) | |
4716 | { | |
4717 | struct mwl8k_priv *priv = hw->priv; | |
4718 | ||
4719 | if (!priv->ap_fw) | |
4720 | mwl8k_bss_info_changed_sta(hw, vif, info, changed); | |
4721 | else | |
4722 | mwl8k_bss_info_changed_ap(hw, vif, info, changed); | |
4723 | } | |
4724 | ||
4725 | static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, | |
4726 | struct netdev_hw_addr_list *mc_list) | |
4727 | { | |
4728 | struct mwl8k_cmd_pkt *cmd; | |
4729 | ||
4730 | /* | |
4731 | * Synthesize and return a command packet that programs the | |
4732 | * hardware multicast address filter. At this point we don't | |
4733 | * know whether FIF_ALLMULTI is being requested, but if it is, | |
4734 | * we'll end up throwing this packet away and creating a new | |
4735 | * one in mwl8k_configure_filter(). | |
4736 | */ | |
4737 | cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list); | |
4738 | ||
4739 | return (unsigned long)cmd; | |
4740 | } | |
4741 | ||
4742 | static int | |
4743 | mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw, | |
4744 | unsigned int changed_flags, | |
4745 | unsigned int *total_flags) | |
4746 | { | |
4747 | struct mwl8k_priv *priv = hw->priv; | |
4748 | ||
4749 | /* | |
4750 | * Hardware sniffer mode is mutually exclusive with STA | |
4751 | * operation, so refuse to enable sniffer mode if a STA | |
4752 | * interface is active. | |
4753 | */ | |
4754 | if (!list_empty(&priv->vif_list)) { | |
4755 | if (net_ratelimit()) | |
4756 | wiphy_info(hw->wiphy, | |
4757 | "not enabling sniffer mode because STA interface is active\n"); | |
4758 | return 0; | |
4759 | } | |
4760 | ||
4761 | if (!priv->sniffer_enabled) { | |
4762 | if (mwl8k_cmd_enable_sniffer(hw, 1)) | |
4763 | return 0; | |
4764 | priv->sniffer_enabled = true; | |
4765 | } | |
4766 | ||
4767 | *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI | | |
4768 | FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL | | |
4769 | FIF_OTHER_BSS; | |
4770 | ||
4771 | return 1; | |
4772 | } | |
4773 | ||
4774 | static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv) | |
4775 | { | |
4776 | if (!list_empty(&priv->vif_list)) | |
4777 | return list_entry(priv->vif_list.next, struct mwl8k_vif, list); | |
4778 | ||
4779 | return NULL; | |
4780 | } | |
4781 | ||
4782 | static void mwl8k_configure_filter(struct ieee80211_hw *hw, | |
4783 | unsigned int changed_flags, | |
4784 | unsigned int *total_flags, | |
4785 | u64 multicast) | |
4786 | { | |
4787 | struct mwl8k_priv *priv = hw->priv; | |
4788 | struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast; | |
4789 | ||
4790 | /* | |
4791 | * AP firmware doesn't allow fine-grained control over | |
4792 | * the receive filter. | |
4793 | */ | |
4794 | if (priv->ap_fw) { | |
4795 | *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; | |
4796 | kfree(cmd); | |
4797 | return; | |
4798 | } | |
4799 | ||
4800 | /* | |
4801 | * Enable hardware sniffer mode if FIF_CONTROL or | |
4802 | * FIF_OTHER_BSS is requested. | |
4803 | */ | |
4804 | if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) && | |
4805 | mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) { | |
4806 | kfree(cmd); | |
4807 | return; | |
4808 | } | |
4809 | ||
4810 | /* Clear unsupported feature flags */ | |
4811 | *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC; | |
4812 | ||
4813 | if (mwl8k_fw_lock(hw)) { | |
4814 | kfree(cmd); | |
4815 | return; | |
4816 | } | |
4817 | ||
4818 | if (priv->sniffer_enabled) { | |
4819 | mwl8k_cmd_enable_sniffer(hw, 0); | |
4820 | priv->sniffer_enabled = false; | |
4821 | } | |
4822 | ||
4823 | if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { | |
4824 | if (*total_flags & FIF_BCN_PRBRESP_PROMISC) { | |
4825 | /* | |
4826 | * Disable the BSS filter. | |
4827 | */ | |
4828 | mwl8k_cmd_set_pre_scan(hw); | |
4829 | } else { | |
4830 | struct mwl8k_vif *mwl8k_vif; | |
4831 | const u8 *bssid; | |
4832 | ||
4833 | /* | |
4834 | * Enable the BSS filter. | |
4835 | * | |
4836 | * If there is an active STA interface, use that | |
4837 | * interface's BSSID, otherwise use a dummy one | |
4838 | * (where the OUI part needs to be nonzero for | |
4839 | * the BSSID to be accepted by POST_SCAN). | |
4840 | */ | |
4841 | mwl8k_vif = mwl8k_first_vif(priv); | |
4842 | if (mwl8k_vif != NULL) | |
4843 | bssid = mwl8k_vif->vif->bss_conf.bssid; | |
4844 | else | |
4845 | bssid = "\x01\x00\x00\x00\x00\x00"; | |
4846 | ||
4847 | mwl8k_cmd_set_post_scan(hw, bssid); | |
4848 | } | |
4849 | } | |
4850 | ||
4851 | /* | |
4852 | * If FIF_ALLMULTI is being requested, throw away the command | |
4853 | * packet that ->prepare_multicast() built and replace it with | |
4854 | * a command packet that enables reception of all multicast | |
4855 | * packets. | |
4856 | */ | |
4857 | if (*total_flags & FIF_ALLMULTI) { | |
4858 | kfree(cmd); | |
4859 | cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL); | |
4860 | } | |
4861 | ||
4862 | if (cmd != NULL) { | |
4863 | mwl8k_post_cmd(hw, cmd); | |
4864 | kfree(cmd); | |
4865 | } | |
4866 | ||
4867 | mwl8k_fw_unlock(hw); | |
4868 | } | |
4869 | ||
4870 | static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
4871 | { | |
4872 | return mwl8k_cmd_set_rts_threshold(hw, value); | |
4873 | } | |
4874 | ||
4875 | static int mwl8k_sta_remove(struct ieee80211_hw *hw, | |
4876 | struct ieee80211_vif *vif, | |
4877 | struct ieee80211_sta *sta) | |
4878 | { | |
4879 | struct mwl8k_priv *priv = hw->priv; | |
4880 | ||
4881 | if (priv->ap_fw) | |
4882 | return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr); | |
4883 | else | |
4884 | return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr); | |
4885 | } | |
4886 | ||
4887 | static int mwl8k_sta_add(struct ieee80211_hw *hw, | |
4888 | struct ieee80211_vif *vif, | |
4889 | struct ieee80211_sta *sta) | |
4890 | { | |
4891 | struct mwl8k_priv *priv = hw->priv; | |
4892 | int ret; | |
4893 | int i; | |
4894 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
4895 | struct ieee80211_key_conf *key; | |
4896 | ||
4897 | if (!priv->ap_fw) { | |
4898 | ret = mwl8k_cmd_update_stadb_add(hw, vif, sta); | |
4899 | if (ret >= 0) { | |
4900 | MWL8K_STA(sta)->peer_id = ret; | |
4901 | if (sta->ht_cap.ht_supported) | |
4902 | MWL8K_STA(sta)->is_ampdu_allowed = true; | |
4903 | ret = 0; | |
4904 | } | |
4905 | ||
4906 | } else { | |
4907 | ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta); | |
4908 | } | |
4909 | ||
4910 | for (i = 0; i < NUM_WEP_KEYS; i++) { | |
4911 | key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key); | |
4912 | if (mwl8k_vif->wep_key_conf[i].enabled) | |
4913 | mwl8k_set_key(hw, SET_KEY, vif, sta, key); | |
4914 | } | |
4915 | return ret; | |
4916 | } | |
4917 | ||
4918 | static int mwl8k_conf_tx(struct ieee80211_hw *hw, | |
4919 | struct ieee80211_vif *vif, u16 queue, | |
4920 | const struct ieee80211_tx_queue_params *params) | |
4921 | { | |
4922 | struct mwl8k_priv *priv = hw->priv; | |
4923 | int rc; | |
4924 | ||
4925 | rc = mwl8k_fw_lock(hw); | |
4926 | if (!rc) { | |
4927 | BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1); | |
4928 | memcpy(&priv->wmm_params[queue], params, sizeof(*params)); | |
4929 | ||
4930 | if (!priv->wmm_enabled) | |
4931 | rc = mwl8k_cmd_set_wmm_mode(hw, 1); | |
4932 | ||
4933 | if (!rc) { | |
4934 | int q = MWL8K_TX_WMM_QUEUES - 1 - queue; | |
4935 | rc = mwl8k_cmd_set_edca_params(hw, q, | |
4936 | params->cw_min, | |
4937 | params->cw_max, | |
4938 | params->aifs, | |
4939 | params->txop); | |
4940 | } | |
4941 | ||
4942 | mwl8k_fw_unlock(hw); | |
4943 | } | |
4944 | ||
4945 | return rc; | |
4946 | } | |
4947 | ||
4948 | static int mwl8k_get_stats(struct ieee80211_hw *hw, | |
4949 | struct ieee80211_low_level_stats *stats) | |
4950 | { | |
4951 | return mwl8k_cmd_get_stat(hw, stats); | |
4952 | } | |
4953 | ||
4954 | static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx, | |
4955 | struct survey_info *survey) | |
4956 | { | |
4957 | struct mwl8k_priv *priv = hw->priv; | |
4958 | struct ieee80211_conf *conf = &hw->conf; | |
4959 | ||
4960 | if (idx != 0) | |
4961 | return -ENOENT; | |
4962 | ||
4963 | survey->channel = conf->channel; | |
4964 | survey->filled = SURVEY_INFO_NOISE_DBM; | |
4965 | survey->noise = priv->noise; | |
4966 | ||
4967 | return 0; | |
4968 | } | |
4969 | ||
4970 | #define MAX_AMPDU_ATTEMPTS 5 | |
4971 | ||
4972 | static int | |
4973 | mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
4974 | enum ieee80211_ampdu_mlme_action action, | |
4975 | struct ieee80211_sta *sta, u16 tid, u16 *ssn, | |
4976 | u8 buf_size) | |
4977 | { | |
4978 | ||
4979 | int i, rc = 0; | |
4980 | struct mwl8k_priv *priv = hw->priv; | |
4981 | struct mwl8k_ampdu_stream *stream; | |
4982 | u8 *addr = sta->addr; | |
4983 | ||
4984 | if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION)) | |
4985 | return -ENOTSUPP; | |
4986 | ||
4987 | spin_lock(&priv->stream_lock); | |
4988 | stream = mwl8k_lookup_stream(hw, addr, tid); | |
4989 | ||
4990 | switch (action) { | |
4991 | case IEEE80211_AMPDU_RX_START: | |
4992 | case IEEE80211_AMPDU_RX_STOP: | |
4993 | break; | |
4994 | case IEEE80211_AMPDU_TX_START: | |
4995 | /* By the time we get here the hw queues may contain outgoing | |
4996 | * packets for this RA/TID that are not part of this BA | |
4997 | * session. The hw will assign sequence numbers to these | |
4998 | * packets as they go out. So if we query the hw for its next | |
4999 | * sequence number and use that for the SSN here, it may end up | |
5000 | * being wrong, which will lead to sequence number mismatch at | |
5001 | * the recipient. To avoid this, we reset the sequence number | |
5002 | * to O for the first MPDU in this BA stream. | |
5003 | */ | |
5004 | *ssn = 0; | |
5005 | if (stream == NULL) { | |
5006 | /* This means that somebody outside this driver called | |
5007 | * ieee80211_start_tx_ba_session. This is unexpected | |
5008 | * because we do our own rate control. Just warn and | |
5009 | * move on. | |
5010 | */ | |
5011 | wiphy_warn(hw->wiphy, "Unexpected call to %s. " | |
5012 | "Proceeding anyway.\n", __func__); | |
5013 | stream = mwl8k_add_stream(hw, sta, tid); | |
5014 | } | |
5015 | if (stream == NULL) { | |
5016 | wiphy_debug(hw->wiphy, "no free AMPDU streams\n"); | |
5017 | rc = -EBUSY; | |
5018 | break; | |
5019 | } | |
5020 | stream->state = AMPDU_STREAM_IN_PROGRESS; | |
5021 | ||
5022 | /* Release the lock before we do the time consuming stuff */ | |
5023 | spin_unlock(&priv->stream_lock); | |
5024 | for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) { | |
5025 | rc = mwl8k_check_ba(hw, stream); | |
5026 | ||
5027 | if (!rc) | |
5028 | break; | |
5029 | /* | |
5030 | * HW queues take time to be flushed, give them | |
5031 | * sufficient time | |
5032 | */ | |
5033 | ||
5034 | msleep(1000); | |
5035 | } | |
5036 | spin_lock(&priv->stream_lock); | |
5037 | if (rc) { | |
5038 | wiphy_err(hw->wiphy, "Stream for tid %d busy after %d" | |
5039 | " attempts\n", tid, MAX_AMPDU_ATTEMPTS); | |
5040 | mwl8k_remove_stream(hw, stream); | |
5041 | rc = -EBUSY; | |
5042 | break; | |
5043 | } | |
5044 | ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); | |
5045 | break; | |
5046 | case IEEE80211_AMPDU_TX_STOP: | |
5047 | if (stream == NULL) | |
5048 | break; | |
5049 | if (stream->state == AMPDU_STREAM_ACTIVE) { | |
5050 | spin_unlock(&priv->stream_lock); | |
5051 | mwl8k_destroy_ba(hw, stream); | |
5052 | spin_lock(&priv->stream_lock); | |
5053 | } | |
5054 | mwl8k_remove_stream(hw, stream); | |
5055 | ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); | |
5056 | break; | |
5057 | case IEEE80211_AMPDU_TX_OPERATIONAL: | |
5058 | BUG_ON(stream == NULL); | |
5059 | BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS); | |
5060 | spin_unlock(&priv->stream_lock); | |
5061 | rc = mwl8k_create_ba(hw, stream, buf_size); | |
5062 | spin_lock(&priv->stream_lock); | |
5063 | if (!rc) | |
5064 | stream->state = AMPDU_STREAM_ACTIVE; | |
5065 | else { | |
5066 | spin_unlock(&priv->stream_lock); | |
5067 | mwl8k_destroy_ba(hw, stream); | |
5068 | spin_lock(&priv->stream_lock); | |
5069 | wiphy_debug(hw->wiphy, | |
5070 | "Failed adding stream for sta %pM tid %d\n", | |
5071 | addr, tid); | |
5072 | mwl8k_remove_stream(hw, stream); | |
5073 | } | |
5074 | break; | |
5075 | ||
5076 | default: | |
5077 | rc = -ENOTSUPP; | |
5078 | } | |
5079 | ||
5080 | spin_unlock(&priv->stream_lock); | |
5081 | return rc; | |
5082 | } | |
5083 | ||
5084 | static const struct ieee80211_ops mwl8k_ops = { | |
5085 | .tx = mwl8k_tx, | |
5086 | .start = mwl8k_start, | |
5087 | .stop = mwl8k_stop, | |
5088 | .add_interface = mwl8k_add_interface, | |
5089 | .remove_interface = mwl8k_remove_interface, | |
5090 | .config = mwl8k_config, | |
5091 | .bss_info_changed = mwl8k_bss_info_changed, | |
5092 | .prepare_multicast = mwl8k_prepare_multicast, | |
5093 | .configure_filter = mwl8k_configure_filter, | |
5094 | .set_key = mwl8k_set_key, | |
5095 | .set_rts_threshold = mwl8k_set_rts_threshold, | |
5096 | .sta_add = mwl8k_sta_add, | |
5097 | .sta_remove = mwl8k_sta_remove, | |
5098 | .conf_tx = mwl8k_conf_tx, | |
5099 | .get_stats = mwl8k_get_stats, | |
5100 | .get_survey = mwl8k_get_survey, | |
5101 | .ampdu_action = mwl8k_ampdu_action, | |
5102 | }; | |
5103 | ||
5104 | static void mwl8k_finalize_join_worker(struct work_struct *work) | |
5105 | { | |
5106 | struct mwl8k_priv *priv = | |
5107 | container_of(work, struct mwl8k_priv, finalize_join_worker); | |
5108 | struct sk_buff *skb = priv->beacon_skb; | |
5109 | struct ieee80211_mgmt *mgmt = (void *)skb->data; | |
5110 | int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable); | |
5111 | const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM, | |
5112 | mgmt->u.beacon.variable, len); | |
5113 | int dtim_period = 1; | |
5114 | ||
5115 | if (tim && tim[1] >= 2) | |
5116 | dtim_period = tim[3]; | |
5117 | ||
5118 | mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period); | |
5119 | ||
5120 | dev_kfree_skb(skb); | |
5121 | priv->beacon_skb = NULL; | |
5122 | } | |
5123 | ||
5124 | enum { | |
5125 | MWL8363 = 0, | |
5126 | MWL8687, | |
5127 | MWL8366, | |
5128 | }; | |
5129 | ||
5130 | #define MWL8K_8366_AP_FW_API 2 | |
5131 | #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw" | |
5132 | #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api) | |
5133 | ||
5134 | static struct mwl8k_device_info mwl8k_info_tbl[] __devinitdata = { | |
5135 | [MWL8363] = { | |
5136 | .part_name = "88w8363", | |
5137 | .helper_image = "mwl8k/helper_8363.fw", | |
5138 | .fw_image_sta = "mwl8k/fmimage_8363.fw", | |
5139 | }, | |
5140 | [MWL8687] = { | |
5141 | .part_name = "88w8687", | |
5142 | .helper_image = "mwl8k/helper_8687.fw", | |
5143 | .fw_image_sta = "mwl8k/fmimage_8687.fw", | |
5144 | }, | |
5145 | [MWL8366] = { | |
5146 | .part_name = "88w8366", | |
5147 | .helper_image = "mwl8k/helper_8366.fw", | |
5148 | .fw_image_sta = "mwl8k/fmimage_8366.fw", | |
5149 | .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API), | |
5150 | .fw_api_ap = MWL8K_8366_AP_FW_API, | |
5151 | .ap_rxd_ops = &rxd_8366_ap_ops, | |
5152 | }, | |
5153 | }; | |
5154 | ||
5155 | MODULE_FIRMWARE("mwl8k/helper_8363.fw"); | |
5156 | MODULE_FIRMWARE("mwl8k/fmimage_8363.fw"); | |
5157 | MODULE_FIRMWARE("mwl8k/helper_8687.fw"); | |
5158 | MODULE_FIRMWARE("mwl8k/fmimage_8687.fw"); | |
5159 | MODULE_FIRMWARE("mwl8k/helper_8366.fw"); | |
5160 | MODULE_FIRMWARE("mwl8k/fmimage_8366.fw"); | |
5161 | MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API)); | |
5162 | ||
5163 | static DEFINE_PCI_DEVICE_TABLE(mwl8k_pci_id_table) = { | |
5164 | { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, }, | |
5165 | { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, }, | |
5166 | { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, }, | |
5167 | { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, }, | |
5168 | { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, }, | |
5169 | { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, }, | |
5170 | { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, }, | |
5171 | { }, | |
5172 | }; | |
5173 | MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table); | |
5174 | ||
5175 | static int mwl8k_request_alt_fw(struct mwl8k_priv *priv) | |
5176 | { | |
5177 | int rc; | |
5178 | printk(KERN_ERR "%s: Error requesting preferred fw %s.\n" | |
5179 | "Trying alternative firmware %s\n", pci_name(priv->pdev), | |
5180 | priv->fw_pref, priv->fw_alt); | |
5181 | rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true); | |
5182 | if (rc) { | |
5183 | printk(KERN_ERR "%s: Error requesting alt fw %s\n", | |
5184 | pci_name(priv->pdev), priv->fw_alt); | |
5185 | return rc; | |
5186 | } | |
5187 | return 0; | |
5188 | } | |
5189 | ||
5190 | static int mwl8k_firmware_load_success(struct mwl8k_priv *priv); | |
5191 | static void mwl8k_fw_state_machine(const struct firmware *fw, void *context) | |
5192 | { | |
5193 | struct mwl8k_priv *priv = context; | |
5194 | struct mwl8k_device_info *di = priv->device_info; | |
5195 | int rc; | |
5196 | ||
5197 | switch (priv->fw_state) { | |
5198 | case FW_STATE_INIT: | |
5199 | if (!fw) { | |
5200 | printk(KERN_ERR "%s: Error requesting helper fw %s\n", | |
5201 | pci_name(priv->pdev), di->helper_image); | |
5202 | goto fail; | |
5203 | } | |
5204 | priv->fw_helper = fw; | |
5205 | rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode, | |
5206 | true); | |
5207 | if (rc && priv->fw_alt) { | |
5208 | rc = mwl8k_request_alt_fw(priv); | |
5209 | if (rc) | |
5210 | goto fail; | |
5211 | priv->fw_state = FW_STATE_LOADING_ALT; | |
5212 | } else if (rc) | |
5213 | goto fail; | |
5214 | else | |
5215 | priv->fw_state = FW_STATE_LOADING_PREF; | |
5216 | break; | |
5217 | ||
5218 | case FW_STATE_LOADING_PREF: | |
5219 | if (!fw) { | |
5220 | if (priv->fw_alt) { | |
5221 | rc = mwl8k_request_alt_fw(priv); | |
5222 | if (rc) | |
5223 | goto fail; | |
5224 | priv->fw_state = FW_STATE_LOADING_ALT; | |
5225 | } else | |
5226 | goto fail; | |
5227 | } else { | |
5228 | priv->fw_ucode = fw; | |
5229 | rc = mwl8k_firmware_load_success(priv); | |
5230 | if (rc) | |
5231 | goto fail; | |
5232 | else | |
5233 | complete(&priv->firmware_loading_complete); | |
5234 | } | |
5235 | break; | |
5236 | ||
5237 | case FW_STATE_LOADING_ALT: | |
5238 | if (!fw) { | |
5239 | printk(KERN_ERR "%s: Error requesting alt fw %s\n", | |
5240 | pci_name(priv->pdev), di->helper_image); | |
5241 | goto fail; | |
5242 | } | |
5243 | priv->fw_ucode = fw; | |
5244 | rc = mwl8k_firmware_load_success(priv); | |
5245 | if (rc) | |
5246 | goto fail; | |
5247 | else | |
5248 | complete(&priv->firmware_loading_complete); | |
5249 | break; | |
5250 | ||
5251 | default: | |
5252 | printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n", | |
5253 | MWL8K_NAME, priv->fw_state); | |
5254 | BUG_ON(1); | |
5255 | } | |
5256 | ||
5257 | return; | |
5258 | ||
5259 | fail: | |
5260 | priv->fw_state = FW_STATE_ERROR; | |
5261 | complete(&priv->firmware_loading_complete); | |
5262 | device_release_driver(&priv->pdev->dev); | |
5263 | mwl8k_release_firmware(priv); | |
5264 | } | |
5265 | ||
5266 | static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image, | |
5267 | bool nowait) | |
5268 | { | |
5269 | struct mwl8k_priv *priv = hw->priv; | |
5270 | int rc; | |
5271 | ||
5272 | /* Reset firmware and hardware */ | |
5273 | mwl8k_hw_reset(priv); | |
5274 | ||
5275 | /* Ask userland hotplug daemon for the device firmware */ | |
5276 | rc = mwl8k_request_firmware(priv, fw_image, nowait); | |
5277 | if (rc) { | |
5278 | wiphy_err(hw->wiphy, "Firmware files not found\n"); | |
5279 | return rc; | |
5280 | } | |
5281 | ||
5282 | if (nowait) | |
5283 | return rc; | |
5284 | ||
5285 | /* Load firmware into hardware */ | |
5286 | rc = mwl8k_load_firmware(hw); | |
5287 | if (rc) | |
5288 | wiphy_err(hw->wiphy, "Cannot start firmware\n"); | |
5289 | ||
5290 | /* Reclaim memory once firmware is successfully loaded */ | |
5291 | mwl8k_release_firmware(priv); | |
5292 | ||
5293 | return rc; | |
5294 | } | |
5295 | ||
5296 | static int mwl8k_init_txqs(struct ieee80211_hw *hw) | |
5297 | { | |
5298 | struct mwl8k_priv *priv = hw->priv; | |
5299 | int rc = 0; | |
5300 | int i; | |
5301 | ||
5302 | for (i = 0; i < mwl8k_tx_queues(priv); i++) { | |
5303 | rc = mwl8k_txq_init(hw, i); | |
5304 | if (rc) | |
5305 | break; | |
5306 | if (priv->ap_fw) | |
5307 | iowrite32(priv->txq[i].txd_dma, | |
5308 | priv->sram + priv->txq_offset[i]); | |
5309 | } | |
5310 | return rc; | |
5311 | } | |
5312 | ||
5313 | /* initialize hw after successfully loading a firmware image */ | |
5314 | static int mwl8k_probe_hw(struct ieee80211_hw *hw) | |
5315 | { | |
5316 | struct mwl8k_priv *priv = hw->priv; | |
5317 | int rc = 0; | |
5318 | int i; | |
5319 | ||
5320 | if (priv->ap_fw) { | |
5321 | priv->rxd_ops = priv->device_info->ap_rxd_ops; | |
5322 | if (priv->rxd_ops == NULL) { | |
5323 | wiphy_err(hw->wiphy, | |
5324 | "Driver does not have AP firmware image support for this hardware\n"); | |
5325 | goto err_stop_firmware; | |
5326 | } | |
5327 | } else { | |
5328 | priv->rxd_ops = &rxd_sta_ops; | |
5329 | } | |
5330 | ||
5331 | priv->sniffer_enabled = false; | |
5332 | priv->wmm_enabled = false; | |
5333 | priv->pending_tx_pkts = 0; | |
5334 | ||
5335 | rc = mwl8k_rxq_init(hw, 0); | |
5336 | if (rc) | |
5337 | goto err_stop_firmware; | |
5338 | rxq_refill(hw, 0, INT_MAX); | |
5339 | ||
5340 | /* For the sta firmware, we need to know the dma addresses of tx queues | |
5341 | * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them | |
5342 | * prior to issuing this command. But for the AP case, we learn the | |
5343 | * total number of queues from the result CMD_GET_HW_SPEC, so for this | |
5344 | * case we must initialize the tx queues after. | |
5345 | */ | |
5346 | priv->num_ampdu_queues = 0; | |
5347 | if (!priv->ap_fw) { | |
5348 | rc = mwl8k_init_txqs(hw); | |
5349 | if (rc) | |
5350 | goto err_free_queues; | |
5351 | } | |
5352 | ||
5353 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
5354 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
5355 | iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY| | |
5356 | MWL8K_A2H_INT_BA_WATCHDOG, | |
5357 | priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); | |
5358 | iowrite32(MWL8K_A2H_INT_OPC_DONE, | |
5359 | priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); | |
5360 | ||
5361 | rc = request_irq(priv->pdev->irq, mwl8k_interrupt, | |
5362 | IRQF_SHARED, MWL8K_NAME, hw); | |
5363 | if (rc) { | |
5364 | wiphy_err(hw->wiphy, "failed to register IRQ handler\n"); | |
5365 | goto err_free_queues; | |
5366 | } | |
5367 | ||
5368 | memset(priv->ampdu, 0, sizeof(priv->ampdu)); | |
5369 | ||
5370 | /* | |
5371 | * Temporarily enable interrupts. Initial firmware host | |
5372 | * commands use interrupts and avoid polling. Disable | |
5373 | * interrupts when done. | |
5374 | */ | |
5375 | iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
5376 | ||
5377 | /* Get config data, mac addrs etc */ | |
5378 | if (priv->ap_fw) { | |
5379 | rc = mwl8k_cmd_get_hw_spec_ap(hw); | |
5380 | if (!rc) | |
5381 | rc = mwl8k_init_txqs(hw); | |
5382 | if (!rc) | |
5383 | rc = mwl8k_cmd_set_hw_spec(hw); | |
5384 | } else { | |
5385 | rc = mwl8k_cmd_get_hw_spec_sta(hw); | |
5386 | } | |
5387 | if (rc) { | |
5388 | wiphy_err(hw->wiphy, "Cannot initialise firmware\n"); | |
5389 | goto err_free_irq; | |
5390 | } | |
5391 | ||
5392 | /* Turn radio off */ | |
5393 | rc = mwl8k_cmd_radio_disable(hw); | |
5394 | if (rc) { | |
5395 | wiphy_err(hw->wiphy, "Cannot disable\n"); | |
5396 | goto err_free_irq; | |
5397 | } | |
5398 | ||
5399 | /* Clear MAC address */ | |
5400 | rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00"); | |
5401 | if (rc) { | |
5402 | wiphy_err(hw->wiphy, "Cannot clear MAC address\n"); | |
5403 | goto err_free_irq; | |
5404 | } | |
5405 | ||
5406 | /* Disable interrupts */ | |
5407 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
5408 | free_irq(priv->pdev->irq, hw); | |
5409 | ||
5410 | wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n", | |
5411 | priv->device_info->part_name, | |
5412 | priv->hw_rev, hw->wiphy->perm_addr, | |
5413 | priv->ap_fw ? "AP" : "STA", | |
5414 | (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff, | |
5415 | (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff); | |
5416 | ||
5417 | return 0; | |
5418 | ||
5419 | err_free_irq: | |
5420 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
5421 | free_irq(priv->pdev->irq, hw); | |
5422 | ||
5423 | err_free_queues: | |
5424 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
5425 | mwl8k_txq_deinit(hw, i); | |
5426 | mwl8k_rxq_deinit(hw, 0); | |
5427 | ||
5428 | err_stop_firmware: | |
5429 | mwl8k_hw_reset(priv); | |
5430 | ||
5431 | return rc; | |
5432 | } | |
5433 | ||
5434 | /* | |
5435 | * invoke mwl8k_reload_firmware to change the firmware image after the device | |
5436 | * has already been registered | |
5437 | */ | |
5438 | static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image) | |
5439 | { | |
5440 | int i, rc = 0; | |
5441 | struct mwl8k_priv *priv = hw->priv; | |
5442 | ||
5443 | mwl8k_stop(hw); | |
5444 | mwl8k_rxq_deinit(hw, 0); | |
5445 | ||
5446 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
5447 | mwl8k_txq_deinit(hw, i); | |
5448 | ||
5449 | rc = mwl8k_init_firmware(hw, fw_image, false); | |
5450 | if (rc) | |
5451 | goto fail; | |
5452 | ||
5453 | rc = mwl8k_probe_hw(hw); | |
5454 | if (rc) | |
5455 | goto fail; | |
5456 | ||
5457 | rc = mwl8k_start(hw); | |
5458 | if (rc) | |
5459 | goto fail; | |
5460 | ||
5461 | rc = mwl8k_config(hw, ~0); | |
5462 | if (rc) | |
5463 | goto fail; | |
5464 | ||
5465 | for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) { | |
5466 | rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]); | |
5467 | if (rc) | |
5468 | goto fail; | |
5469 | } | |
5470 | ||
5471 | return rc; | |
5472 | ||
5473 | fail: | |
5474 | printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n"); | |
5475 | return rc; | |
5476 | } | |
5477 | ||
5478 | static int mwl8k_firmware_load_success(struct mwl8k_priv *priv) | |
5479 | { | |
5480 | struct ieee80211_hw *hw = priv->hw; | |
5481 | int i, rc; | |
5482 | ||
5483 | rc = mwl8k_load_firmware(hw); | |
5484 | mwl8k_release_firmware(priv); | |
5485 | if (rc) { | |
5486 | wiphy_err(hw->wiphy, "Cannot start firmware\n"); | |
5487 | return rc; | |
5488 | } | |
5489 | ||
5490 | /* | |
5491 | * Extra headroom is the size of the required DMA header | |
5492 | * minus the size of the smallest 802.11 frame (CTS frame). | |
5493 | */ | |
5494 | hw->extra_tx_headroom = | |
5495 | sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); | |
5496 | ||
5497 | hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0; | |
5498 | ||
5499 | hw->channel_change_time = 10; | |
5500 | ||
5501 | hw->queues = MWL8K_TX_WMM_QUEUES; | |
5502 | ||
5503 | /* Set rssi values to dBm */ | |
5504 | hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL; | |
5505 | ||
5506 | /* | |
5507 | * Ask mac80211 to not to trigger PS mode | |
5508 | * based on PM bit of incoming frames. | |
5509 | */ | |
5510 | if (priv->ap_fw) | |
5511 | hw->flags |= IEEE80211_HW_AP_LINK_PS; | |
5512 | ||
5513 | hw->vif_data_size = sizeof(struct mwl8k_vif); | |
5514 | hw->sta_data_size = sizeof(struct mwl8k_sta); | |
5515 | ||
5516 | priv->macids_used = 0; | |
5517 | INIT_LIST_HEAD(&priv->vif_list); | |
5518 | ||
5519 | /* Set default radio state and preamble */ | |
5520 | priv->radio_on = false; | |
5521 | priv->radio_short_preamble = false; | |
5522 | ||
5523 | /* Finalize join worker */ | |
5524 | INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); | |
5525 | /* Handle watchdog ba events */ | |
5526 | INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events); | |
5527 | ||
5528 | /* TX reclaim and RX tasklets. */ | |
5529 | tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw); | |
5530 | tasklet_disable(&priv->poll_tx_task); | |
5531 | tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw); | |
5532 | tasklet_disable(&priv->poll_rx_task); | |
5533 | ||
5534 | /* Power management cookie */ | |
5535 | priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma); | |
5536 | if (priv->cookie == NULL) | |
5537 | return -ENOMEM; | |
5538 | ||
5539 | mutex_init(&priv->fw_mutex); | |
5540 | priv->fw_mutex_owner = NULL; | |
5541 | priv->fw_mutex_depth = 0; | |
5542 | priv->hostcmd_wait = NULL; | |
5543 | ||
5544 | spin_lock_init(&priv->tx_lock); | |
5545 | ||
5546 | spin_lock_init(&priv->stream_lock); | |
5547 | ||
5548 | priv->tx_wait = NULL; | |
5549 | ||
5550 | rc = mwl8k_probe_hw(hw); | |
5551 | if (rc) | |
5552 | goto err_free_cookie; | |
5553 | ||
5554 | hw->wiphy->interface_modes = 0; | |
5555 | if (priv->ap_macids_supported || priv->device_info->fw_image_ap) | |
5556 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP); | |
5557 | if (priv->sta_macids_supported || priv->device_info->fw_image_sta) | |
5558 | hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION); | |
5559 | ||
5560 | rc = ieee80211_register_hw(hw); | |
5561 | if (rc) { | |
5562 | wiphy_err(hw->wiphy, "Cannot register device\n"); | |
5563 | goto err_unprobe_hw; | |
5564 | } | |
5565 | ||
5566 | return 0; | |
5567 | ||
5568 | err_unprobe_hw: | |
5569 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
5570 | mwl8k_txq_deinit(hw, i); | |
5571 | mwl8k_rxq_deinit(hw, 0); | |
5572 | ||
5573 | err_free_cookie: | |
5574 | if (priv->cookie != NULL) | |
5575 | pci_free_consistent(priv->pdev, 4, | |
5576 | priv->cookie, priv->cookie_dma); | |
5577 | ||
5578 | return rc; | |
5579 | } | |
5580 | static int __devinit mwl8k_probe(struct pci_dev *pdev, | |
5581 | const struct pci_device_id *id) | |
5582 | { | |
5583 | static int printed_version; | |
5584 | struct ieee80211_hw *hw; | |
5585 | struct mwl8k_priv *priv; | |
5586 | struct mwl8k_device_info *di; | |
5587 | int rc; | |
5588 | ||
5589 | if (!printed_version) { | |
5590 | printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION); | |
5591 | printed_version = 1; | |
5592 | } | |
5593 | ||
5594 | ||
5595 | rc = pci_enable_device(pdev); | |
5596 | if (rc) { | |
5597 | printk(KERN_ERR "%s: Cannot enable new PCI device\n", | |
5598 | MWL8K_NAME); | |
5599 | return rc; | |
5600 | } | |
5601 | ||
5602 | rc = pci_request_regions(pdev, MWL8K_NAME); | |
5603 | if (rc) { | |
5604 | printk(KERN_ERR "%s: Cannot obtain PCI resources\n", | |
5605 | MWL8K_NAME); | |
5606 | goto err_disable_device; | |
5607 | } | |
5608 | ||
5609 | pci_set_master(pdev); | |
5610 | ||
5611 | ||
5612 | hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); | |
5613 | if (hw == NULL) { | |
5614 | printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); | |
5615 | rc = -ENOMEM; | |
5616 | goto err_free_reg; | |
5617 | } | |
5618 | ||
5619 | SET_IEEE80211_DEV(hw, &pdev->dev); | |
5620 | pci_set_drvdata(pdev, hw); | |
5621 | ||
5622 | priv = hw->priv; | |
5623 | priv->hw = hw; | |
5624 | priv->pdev = pdev; | |
5625 | priv->device_info = &mwl8k_info_tbl[id->driver_data]; | |
5626 | ||
5627 | ||
5628 | priv->sram = pci_iomap(pdev, 0, 0x10000); | |
5629 | if (priv->sram == NULL) { | |
5630 | wiphy_err(hw->wiphy, "Cannot map device SRAM\n"); | |
5631 | goto err_iounmap; | |
5632 | } | |
5633 | ||
5634 | /* | |
5635 | * If BAR0 is a 32 bit BAR, the register BAR will be BAR1. | |
5636 | * If BAR0 is a 64 bit BAR, the register BAR will be BAR2. | |
5637 | */ | |
5638 | priv->regs = pci_iomap(pdev, 1, 0x10000); | |
5639 | if (priv->regs == NULL) { | |
5640 | priv->regs = pci_iomap(pdev, 2, 0x10000); | |
5641 | if (priv->regs == NULL) { | |
5642 | wiphy_err(hw->wiphy, "Cannot map device registers\n"); | |
5643 | goto err_iounmap; | |
5644 | } | |
5645 | } | |
5646 | ||
5647 | /* | |
5648 | * Choose the initial fw image depending on user input. If a second | |
5649 | * image is available, make it the alternative image that will be | |
5650 | * loaded if the first one fails. | |
5651 | */ | |
5652 | init_completion(&priv->firmware_loading_complete); | |
5653 | di = priv->device_info; | |
5654 | if (ap_mode_default && di->fw_image_ap) { | |
5655 | priv->fw_pref = di->fw_image_ap; | |
5656 | priv->fw_alt = di->fw_image_sta; | |
5657 | } else if (!ap_mode_default && di->fw_image_sta) { | |
5658 | priv->fw_pref = di->fw_image_sta; | |
5659 | priv->fw_alt = di->fw_image_ap; | |
5660 | } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) { | |
5661 | printk(KERN_WARNING "AP fw is unavailable. Using STA fw."); | |
5662 | priv->fw_pref = di->fw_image_sta; | |
5663 | } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) { | |
5664 | printk(KERN_WARNING "STA fw is unavailable. Using AP fw."); | |
5665 | priv->fw_pref = di->fw_image_ap; | |
5666 | } | |
5667 | rc = mwl8k_init_firmware(hw, priv->fw_pref, true); | |
5668 | if (rc) | |
5669 | goto err_stop_firmware; | |
5670 | return rc; | |
5671 | ||
5672 | err_stop_firmware: | |
5673 | mwl8k_hw_reset(priv); | |
5674 | ||
5675 | err_iounmap: | |
5676 | if (priv->regs != NULL) | |
5677 | pci_iounmap(pdev, priv->regs); | |
5678 | ||
5679 | if (priv->sram != NULL) | |
5680 | pci_iounmap(pdev, priv->sram); | |
5681 | ||
5682 | pci_set_drvdata(pdev, NULL); | |
5683 | ieee80211_free_hw(hw); | |
5684 | ||
5685 | err_free_reg: | |
5686 | pci_release_regions(pdev); | |
5687 | ||
5688 | err_disable_device: | |
5689 | pci_disable_device(pdev); | |
5690 | ||
5691 | return rc; | |
5692 | } | |
5693 | ||
5694 | static void __devexit mwl8k_shutdown(struct pci_dev *pdev) | |
5695 | { | |
5696 | printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__); | |
5697 | } | |
5698 | ||
5699 | static void __devexit mwl8k_remove(struct pci_dev *pdev) | |
5700 | { | |
5701 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); | |
5702 | struct mwl8k_priv *priv; | |
5703 | int i; | |
5704 | ||
5705 | if (hw == NULL) | |
5706 | return; | |
5707 | priv = hw->priv; | |
5708 | ||
5709 | wait_for_completion(&priv->firmware_loading_complete); | |
5710 | ||
5711 | if (priv->fw_state == FW_STATE_ERROR) { | |
5712 | mwl8k_hw_reset(priv); | |
5713 | goto unmap; | |
5714 | } | |
5715 | ||
5716 | ieee80211_stop_queues(hw); | |
5717 | ||
5718 | ieee80211_unregister_hw(hw); | |
5719 | ||
5720 | /* Remove TX reclaim and RX tasklets. */ | |
5721 | tasklet_kill(&priv->poll_tx_task); | |
5722 | tasklet_kill(&priv->poll_rx_task); | |
5723 | ||
5724 | /* Stop hardware */ | |
5725 | mwl8k_hw_reset(priv); | |
5726 | ||
5727 | /* Return all skbs to mac80211 */ | |
5728 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
5729 | mwl8k_txq_reclaim(hw, i, INT_MAX, 1); | |
5730 | ||
5731 | for (i = 0; i < mwl8k_tx_queues(priv); i++) | |
5732 | mwl8k_txq_deinit(hw, i); | |
5733 | ||
5734 | mwl8k_rxq_deinit(hw, 0); | |
5735 | ||
5736 | pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma); | |
5737 | ||
5738 | unmap: | |
5739 | pci_iounmap(pdev, priv->regs); | |
5740 | pci_iounmap(pdev, priv->sram); | |
5741 | pci_set_drvdata(pdev, NULL); | |
5742 | ieee80211_free_hw(hw); | |
5743 | pci_release_regions(pdev); | |
5744 | pci_disable_device(pdev); | |
5745 | } | |
5746 | ||
5747 | static struct pci_driver mwl8k_driver = { | |
5748 | .name = MWL8K_NAME, | |
5749 | .id_table = mwl8k_pci_id_table, | |
5750 | .probe = mwl8k_probe, | |
5751 | .remove = __devexit_p(mwl8k_remove), | |
5752 | .shutdown = __devexit_p(mwl8k_shutdown), | |
5753 | }; | |
5754 | ||
5755 | static int __init mwl8k_init(void) | |
5756 | { | |
5757 | return pci_register_driver(&mwl8k_driver); | |
5758 | } | |
5759 | ||
5760 | static void __exit mwl8k_exit(void) | |
5761 | { | |
5762 | pci_unregister_driver(&mwl8k_driver); | |
5763 | } | |
5764 | ||
5765 | module_init(mwl8k_init); | |
5766 | module_exit(mwl8k_exit); | |
5767 | ||
5768 | MODULE_DESCRIPTION(MWL8K_DESC); | |
5769 | MODULE_VERSION(MWL8K_VERSION); | |
5770 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); | |
5771 | MODULE_LICENSE("GPL"); |