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a66098da LB |
1 | /* |
2 | * drivers/net/wireless/mwl8k.c driver for Marvell TOPDOG 802.11 Wireless cards | |
3 | * | |
4 | * Copyright (C) 2008 Marvell Semiconductor Inc. | |
5 | * | |
6 | * This file is licensed under the terms of the GNU General Public | |
7 | * License version 2. This program is licensed "as is" without any | |
8 | * warranty of any kind, whether express or implied. | |
9 | */ | |
10 | ||
11 | #include <linux/init.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/kernel.h> | |
14 | #include <linux/spinlock.h> | |
15 | #include <linux/list.h> | |
16 | #include <linux/pci.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/completion.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <net/mac80211.h> | |
21 | #include <linux/moduleparam.h> | |
22 | #include <linux/firmware.h> | |
23 | #include <linux/workqueue.h> | |
24 | ||
25 | #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver" | |
26 | #define MWL8K_NAME KBUILD_MODNAME | |
27 | #define MWL8K_VERSION "0.9.1" | |
28 | ||
29 | MODULE_DESCRIPTION(MWL8K_DESC); | |
30 | MODULE_VERSION(MWL8K_VERSION); | |
31 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); | |
32 | MODULE_LICENSE("GPL"); | |
33 | ||
34 | static DEFINE_PCI_DEVICE_TABLE(mwl8k_table) = { | |
35 | { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = 8687, }, | |
36 | { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = 8687, }, | |
37 | { } | |
38 | }; | |
39 | MODULE_DEVICE_TABLE(pci, mwl8k_table); | |
40 | ||
41 | #define IEEE80211_ADDR_LEN ETH_ALEN | |
42 | ||
43 | /* Register definitions */ | |
44 | #define MWL8K_HIU_GEN_PTR 0x00000c10 | |
45 | #define MWL8K_MODE_STA 0x0000005a | |
46 | #define MWL8K_MODE_AP 0x000000a5 | |
47 | #define MWL8K_HIU_INT_CODE 0x00000c14 | |
48 | #define MWL8K_FWSTA_READY 0xf0f1f2f4 | |
49 | #define MWL8K_FWAP_READY 0xf1f2f4a5 | |
50 | #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005 | |
51 | #define MWL8K_HIU_SCRATCH 0x00000c40 | |
52 | ||
53 | /* Host->device communications */ | |
54 | #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18 | |
55 | #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c | |
56 | #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20 | |
57 | #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24 | |
58 | #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28 | |
59 | #define MWL8K_H2A_INT_DUMMY (1 << 20) | |
60 | #define MWL8K_H2A_INT_RESET (1 << 15) | |
61 | #define MWL8K_H2A_INT_PS (1 << 2) | |
62 | #define MWL8K_H2A_INT_DOORBELL (1 << 1) | |
63 | #define MWL8K_H2A_INT_PPA_READY (1 << 0) | |
64 | ||
65 | /* Device->host communications */ | |
66 | #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c | |
67 | #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30 | |
68 | #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34 | |
69 | #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38 | |
70 | #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c | |
71 | #define MWL8K_A2H_INT_DUMMY (1 << 20) | |
72 | #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11) | |
73 | #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10) | |
74 | #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7) | |
75 | #define MWL8K_A2H_INT_RADIO_ON (1 << 6) | |
76 | #define MWL8K_A2H_INT_RADIO_OFF (1 << 5) | |
77 | #define MWL8K_A2H_INT_MAC_EVENT (1 << 3) | |
78 | #define MWL8K_A2H_INT_OPC_DONE (1 << 2) | |
79 | #define MWL8K_A2H_INT_RX_READY (1 << 1) | |
80 | #define MWL8K_A2H_INT_TX_DONE (1 << 0) | |
81 | ||
82 | #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \ | |
83 | MWL8K_A2H_INT_CHNL_SWITCHED | \ | |
84 | MWL8K_A2H_INT_QUEUE_EMPTY | \ | |
85 | MWL8K_A2H_INT_RADAR_DETECT | \ | |
86 | MWL8K_A2H_INT_RADIO_ON | \ | |
87 | MWL8K_A2H_INT_RADIO_OFF | \ | |
88 | MWL8K_A2H_INT_MAC_EVENT | \ | |
89 | MWL8K_A2H_INT_OPC_DONE | \ | |
90 | MWL8K_A2H_INT_RX_READY | \ | |
91 | MWL8K_A2H_INT_TX_DONE) | |
92 | ||
93 | /* WME stream classes */ | |
94 | #define WME_AC_BE 0 /* best effort */ | |
95 | #define WME_AC_BK 1 /* background */ | |
96 | #define WME_AC_VI 2 /* video */ | |
97 | #define WME_AC_VO 3 /* voice */ | |
98 | ||
99 | #define MWL8K_RX_QUEUES 1 | |
100 | #define MWL8K_TX_QUEUES 4 | |
101 | ||
102 | struct mwl8k_rx_queue { | |
103 | int rx_desc_count; | |
104 | ||
105 | /* hw receives here */ | |
106 | int rx_head; | |
107 | ||
108 | /* refill descs here */ | |
109 | int rx_tail; | |
110 | ||
111 | struct mwl8k_rx_desc *rx_desc_area; | |
112 | dma_addr_t rx_desc_dma; | |
113 | struct sk_buff **rx_skb; | |
114 | }; | |
115 | ||
116 | struct mwl8k_skb { | |
117 | /* | |
118 | * The DMA engine requires a modification to the payload. | |
119 | * If the skbuff is shared/cloned, it needs to be unshared. | |
120 | * This method is used to ensure the stack always gets back | |
121 | * the skbuff it sent for transmission. | |
122 | */ | |
123 | struct sk_buff *clone; | |
124 | struct sk_buff *skb; | |
125 | }; | |
126 | ||
127 | struct mwl8k_tx_queue { | |
128 | /* hw transmits here */ | |
129 | int tx_head; | |
130 | ||
131 | /* sw appends here */ | |
132 | int tx_tail; | |
133 | ||
134 | struct ieee80211_tx_queue_stats tx_stats; | |
135 | struct mwl8k_tx_desc *tx_desc_area; | |
136 | dma_addr_t tx_desc_dma; | |
137 | struct mwl8k_skb *tx_skb; | |
138 | }; | |
139 | ||
140 | /* Pointers to the firmware data and meta information about it. */ | |
141 | struct mwl8k_firmware { | |
142 | /* Microcode */ | |
143 | struct firmware *ucode; | |
144 | ||
145 | /* Boot helper code */ | |
146 | struct firmware *helper; | |
147 | }; | |
148 | ||
149 | struct mwl8k_priv { | |
150 | void __iomem *regs; | |
151 | struct ieee80211_hw *hw; | |
152 | ||
153 | struct pci_dev *pdev; | |
154 | u8 name[16]; | |
155 | /* firmware access lock */ | |
156 | spinlock_t fw_lock; | |
157 | ||
158 | /* firmware files and meta data */ | |
159 | struct mwl8k_firmware fw; | |
160 | u32 part_num; | |
161 | ||
162 | /* lock held over TX and TX reap */ | |
163 | spinlock_t tx_lock; | |
164 | u32 int_mask; | |
165 | ||
166 | struct ieee80211_vif *vif; | |
167 | struct list_head vif_list; | |
168 | ||
169 | struct ieee80211_channel *current_channel; | |
170 | ||
171 | /* power management status cookie from firmware */ | |
172 | u32 *cookie; | |
173 | dma_addr_t cookie_dma; | |
174 | ||
175 | u16 num_mcaddrs; | |
176 | u16 region_code; | |
177 | u8 hw_rev; | |
178 | __le32 fw_rev; | |
179 | u32 wep_enabled; | |
180 | ||
181 | /* | |
182 | * Running count of TX packets in flight, to avoid | |
183 | * iterating over the transmit rings each time. | |
184 | */ | |
185 | int pending_tx_pkts; | |
186 | ||
187 | struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES]; | |
188 | struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES]; | |
189 | ||
190 | /* PHY parameters */ | |
191 | struct ieee80211_supported_band band; | |
192 | struct ieee80211_channel channels[14]; | |
193 | struct ieee80211_rate rates[12]; | |
194 | ||
195 | /* RF preamble: Short, Long or Auto */ | |
196 | u8 radio_preamble; | |
197 | u8 radio_state; | |
198 | ||
199 | /* WMM MODE 1 for enabled; 0 for disabled */ | |
200 | bool wmm_mode; | |
201 | ||
202 | /* Set if PHY config is in progress */ | |
203 | bool inconfig; | |
204 | ||
205 | /* XXX need to convert this to handle multiple interfaces */ | |
206 | bool capture_beacon; | |
207 | u8 capture_bssid[IEEE80211_ADDR_LEN]; | |
208 | struct sk_buff *beacon_skb; | |
209 | ||
210 | /* | |
211 | * This FJ worker has to be global as it is scheduled from the | |
212 | * RX handler. At this point we don't know which interface it | |
213 | * belongs to until the list of bssids waiting to complete join | |
214 | * is checked. | |
215 | */ | |
216 | struct work_struct finalize_join_worker; | |
217 | ||
218 | /* Tasklet to reclaim TX descriptors and buffers after tx */ | |
219 | struct tasklet_struct tx_reclaim_task; | |
220 | ||
221 | /* Work thread to serialize configuration requests */ | |
222 | struct workqueue_struct *config_wq; | |
223 | struct completion *hostcmd_wait; | |
224 | struct completion *tx_wait; | |
225 | }; | |
226 | ||
227 | /* Per interface specific private data */ | |
228 | struct mwl8k_vif { | |
229 | struct list_head node; | |
230 | ||
231 | /* backpointer to parent config block */ | |
232 | struct mwl8k_priv *priv; | |
233 | ||
234 | /* BSS config of AP or IBSS from mac80211*/ | |
235 | struct ieee80211_bss_conf bss_info; | |
236 | ||
237 | /* BSSID of AP or IBSS */ | |
238 | u8 bssid[IEEE80211_ADDR_LEN]; | |
239 | u8 mac_addr[IEEE80211_ADDR_LEN]; | |
240 | ||
241 | /* | |
242 | * Subset of supported legacy rates. | |
243 | * Intersection of AP and STA supported rates. | |
244 | */ | |
245 | struct ieee80211_rate legacy_rates[12]; | |
246 | ||
247 | /* number of supported legacy rates */ | |
248 | u8 legacy_nrates; | |
249 | ||
250 | /* Number of supported MCS rates. Work in progress */ | |
251 | u8 mcs_nrates; | |
252 | ||
253 | /* Index into station database.Returned by update_sta_db call */ | |
254 | u8 peer_id; | |
255 | ||
256 | /* Non AMPDU sequence number assigned by driver */ | |
257 | u16 seqno; | |
258 | ||
259 | /* Note:There is no channel info, | |
260 | * refer to the master channel info in priv | |
261 | */ | |
262 | }; | |
263 | ||
264 | #define MWL8K_VIF(_vif) (struct mwl8k_vif *)(&((_vif)->drv_priv)) | |
265 | ||
266 | static const struct ieee80211_channel mwl8k_channels[] = { | |
267 | { .center_freq = 2412, .hw_value = 1, }, | |
268 | { .center_freq = 2417, .hw_value = 2, }, | |
269 | { .center_freq = 2422, .hw_value = 3, }, | |
270 | { .center_freq = 2427, .hw_value = 4, }, | |
271 | { .center_freq = 2432, .hw_value = 5, }, | |
272 | { .center_freq = 2437, .hw_value = 6, }, | |
273 | { .center_freq = 2442, .hw_value = 7, }, | |
274 | { .center_freq = 2447, .hw_value = 8, }, | |
275 | { .center_freq = 2452, .hw_value = 9, }, | |
276 | { .center_freq = 2457, .hw_value = 10, }, | |
277 | { .center_freq = 2462, .hw_value = 11, }, | |
278 | }; | |
279 | ||
280 | static const struct ieee80211_rate mwl8k_rates[] = { | |
281 | { .bitrate = 10, .hw_value = 2, }, | |
282 | { .bitrate = 20, .hw_value = 4, }, | |
283 | { .bitrate = 55, .hw_value = 11, }, | |
284 | { .bitrate = 60, .hw_value = 12, }, | |
285 | { .bitrate = 90, .hw_value = 18, }, | |
286 | { .bitrate = 110, .hw_value = 22, }, | |
287 | { .bitrate = 120, .hw_value = 24, }, | |
288 | { .bitrate = 180, .hw_value = 36, }, | |
289 | { .bitrate = 240, .hw_value = 48, }, | |
290 | { .bitrate = 360, .hw_value = 72, }, | |
291 | { .bitrate = 480, .hw_value = 96, }, | |
292 | { .bitrate = 540, .hw_value = 108, }, | |
293 | }; | |
294 | ||
295 | /* Radio settings */ | |
296 | #define MWL8K_RADIO_FORCE 0x2 | |
297 | #define MWL8K_RADIO_ENABLE 0x1 | |
298 | #define MWL8K_RADIO_DISABLE 0x0 | |
299 | #define MWL8K_RADIO_AUTO_PREAMBLE 0x0005 | |
300 | #define MWL8K_RADIO_SHORT_PREAMBLE 0x0003 | |
301 | #define MWL8K_RADIO_LONG_PREAMBLE 0x0001 | |
302 | ||
303 | /* WMM */ | |
304 | #define MWL8K_WMM_ENABLE 1 | |
305 | #define MWL8K_WMM_DISABLE 0 | |
306 | ||
307 | #define MWL8K_RADIO_DEFAULT_PREAMBLE MWL8K_RADIO_LONG_PREAMBLE | |
308 | ||
309 | /* Slot time */ | |
310 | ||
311 | /* Short Slot: 9us slot time */ | |
312 | #define MWL8K_SHORT_SLOTTIME 1 | |
313 | ||
314 | /* Long slot: 20us slot time */ | |
315 | #define MWL8K_LONG_SLOTTIME 0 | |
316 | ||
317 | /* Set or get info from Firmware */ | |
318 | #define MWL8K_CMD_SET 0x0001 | |
319 | #define MWL8K_CMD_GET 0x0000 | |
320 | ||
321 | /* Firmware command codes */ | |
322 | #define MWL8K_CMD_CODE_DNLD 0x0001 | |
323 | #define MWL8K_CMD_GET_HW_SPEC 0x0003 | |
324 | #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 | |
325 | #define MWL8K_CMD_GET_STAT 0x0014 | |
326 | #define MWL8K_CMD_RADIO_CONTROL 0x001C | |
327 | #define MWL8K_CMD_RF_TX_POWER 0x001E | |
328 | #define MWL8K_CMD_SET_PRE_SCAN 0x0107 | |
329 | #define MWL8K_CMD_SET_POST_SCAN 0x0108 | |
330 | #define MWL8K_CMD_SET_RF_CHANNEL 0x010A | |
331 | #define MWL8K_CMD_SET_SLOT 0x0114 | |
332 | #define MWL8K_CMD_MIMO_CONFIG 0x0125 | |
333 | #define MWL8K_CMD_ENABLE_SNIFFER 0x0150 | |
334 | #define MWL8K_CMD_SET_WMM_MODE 0x0123 | |
335 | #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 | |
336 | #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 | |
337 | #define MWL8K_CMD_UPDATE_STADB 0x1123 | |
338 | #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 | |
339 | #define MWL8K_CMD_SET_LINKADAPT_MODE 0x0129 | |
340 | #define MWL8K_CMD_SET_AID 0x010d | |
341 | #define MWL8K_CMD_SET_RATE 0x0110 | |
342 | #define MWL8K_CMD_USE_FIXED_RATE 0x0126 | |
343 | #define MWL8K_CMD_RTS_THRESHOLD 0x0113 | |
344 | #define MWL8K_CMD_ENCRYPTION 0x1122 | |
345 | ||
346 | static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize) | |
347 | { | |
348 | #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ | |
349 | snprintf(buf, bufsize, "%s", #x);\ | |
350 | return buf;\ | |
351 | } while (0) | |
352 | switch (cmd & (~0x8000)) { | |
353 | MWL8K_CMDNAME(CODE_DNLD); | |
354 | MWL8K_CMDNAME(GET_HW_SPEC); | |
355 | MWL8K_CMDNAME(MAC_MULTICAST_ADR); | |
356 | MWL8K_CMDNAME(GET_STAT); | |
357 | MWL8K_CMDNAME(RADIO_CONTROL); | |
358 | MWL8K_CMDNAME(RF_TX_POWER); | |
359 | MWL8K_CMDNAME(SET_PRE_SCAN); | |
360 | MWL8K_CMDNAME(SET_POST_SCAN); | |
361 | MWL8K_CMDNAME(SET_RF_CHANNEL); | |
362 | MWL8K_CMDNAME(SET_SLOT); | |
363 | MWL8K_CMDNAME(MIMO_CONFIG); | |
364 | MWL8K_CMDNAME(ENABLE_SNIFFER); | |
365 | MWL8K_CMDNAME(SET_WMM_MODE); | |
366 | MWL8K_CMDNAME(SET_EDCA_PARAMS); | |
367 | MWL8K_CMDNAME(SET_FINALIZE_JOIN); | |
368 | MWL8K_CMDNAME(UPDATE_STADB); | |
369 | MWL8K_CMDNAME(SET_RATEADAPT_MODE); | |
370 | MWL8K_CMDNAME(SET_LINKADAPT_MODE); | |
371 | MWL8K_CMDNAME(SET_AID); | |
372 | MWL8K_CMDNAME(SET_RATE); | |
373 | MWL8K_CMDNAME(USE_FIXED_RATE); | |
374 | MWL8K_CMDNAME(RTS_THRESHOLD); | |
375 | MWL8K_CMDNAME(ENCRYPTION); | |
376 | default: | |
377 | snprintf(buf, bufsize, "0x%x", cmd); | |
378 | } | |
379 | #undef MWL8K_CMDNAME | |
380 | ||
381 | return buf; | |
382 | } | |
383 | ||
384 | /* Hardware and firmware reset */ | |
385 | static void mwl8k_hw_reset(struct mwl8k_priv *priv) | |
386 | { | |
387 | iowrite32(MWL8K_H2A_INT_RESET, | |
388 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
389 | iowrite32(MWL8K_H2A_INT_RESET, | |
390 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
391 | msleep(20); | |
392 | } | |
393 | ||
394 | /* Release fw image */ | |
395 | static void mwl8k_release_fw(struct firmware **fw) | |
396 | { | |
397 | if (*fw == NULL) | |
398 | return; | |
399 | release_firmware(*fw); | |
400 | *fw = NULL; | |
401 | } | |
402 | ||
403 | static void mwl8k_release_firmware(struct mwl8k_priv *priv) | |
404 | { | |
405 | mwl8k_release_fw(&priv->fw.ucode); | |
406 | mwl8k_release_fw(&priv->fw.helper); | |
407 | } | |
408 | ||
409 | /* Request fw image */ | |
410 | static int mwl8k_request_fw(struct mwl8k_priv *priv, | |
411 | const char *fname, struct firmware **fw) | |
412 | { | |
413 | /* release current image */ | |
414 | if (*fw != NULL) | |
415 | mwl8k_release_fw(fw); | |
416 | ||
417 | return request_firmware((const struct firmware **)fw, | |
418 | fname, &priv->pdev->dev); | |
419 | } | |
420 | ||
421 | static int mwl8k_request_firmware(struct mwl8k_priv *priv, u32 part_num) | |
422 | { | |
423 | u8 filename[64]; | |
424 | int rc; | |
425 | ||
426 | priv->part_num = part_num; | |
427 | ||
428 | snprintf(filename, sizeof(filename), | |
429 | "mwl8k/helper_%u.fw", priv->part_num); | |
430 | ||
431 | rc = mwl8k_request_fw(priv, filename, &priv->fw.helper); | |
432 | if (rc) { | |
433 | printk(KERN_ERR | |
434 | "%s Error requesting helper firmware file %s\n", | |
435 | pci_name(priv->pdev), filename); | |
436 | return rc; | |
437 | } | |
438 | ||
439 | snprintf(filename, sizeof(filename), | |
440 | "mwl8k/fmimage_%u.fw", priv->part_num); | |
441 | ||
442 | rc = mwl8k_request_fw(priv, filename, &priv->fw.ucode); | |
443 | if (rc) { | |
444 | printk(KERN_ERR "%s Error requesting firmware file %s\n", | |
445 | pci_name(priv->pdev), filename); | |
446 | mwl8k_release_fw(&priv->fw.helper); | |
447 | return rc; | |
448 | } | |
449 | ||
450 | return 0; | |
451 | } | |
452 | ||
453 | struct mwl8k_cmd_pkt { | |
454 | __le16 code; | |
455 | __le16 length; | |
456 | __le16 seq_num; | |
457 | __le16 result; | |
458 | char payload[0]; | |
459 | } __attribute__((packed)); | |
460 | ||
461 | /* | |
462 | * Firmware loading. | |
463 | */ | |
464 | static int | |
465 | mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) | |
466 | { | |
467 | void __iomem *regs = priv->regs; | |
468 | dma_addr_t dma_addr; | |
469 | int rc; | |
470 | int loops; | |
471 | ||
472 | dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE); | |
473 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
474 | return -ENOMEM; | |
475 | ||
476 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
477 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
478 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
479 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
480 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
481 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
482 | ||
483 | rc = -ETIMEDOUT; | |
484 | loops = 1000; | |
485 | do { | |
486 | u32 int_code; | |
487 | ||
488 | int_code = ioread32(regs + MWL8K_HIU_INT_CODE); | |
489 | if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { | |
490 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
491 | rc = 0; | |
492 | break; | |
493 | } | |
494 | ||
495 | udelay(1); | |
496 | } while (--loops); | |
497 | ||
498 | pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE); | |
499 | ||
500 | /* | |
501 | * Clear 'command done' interrupt bit. | |
502 | */ | |
503 | loops = 1000; | |
504 | do { | |
505 | u32 status; | |
506 | ||
507 | status = ioread32(priv->regs + | |
508 | MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
509 | if (status & MWL8K_A2H_INT_OPC_DONE) { | |
510 | iowrite32(~MWL8K_A2H_INT_OPC_DONE, | |
511 | priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
512 | ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
513 | break; | |
514 | } | |
515 | ||
516 | udelay(1); | |
517 | } while (--loops); | |
518 | ||
519 | return rc; | |
520 | } | |
521 | ||
522 | static int mwl8k_load_fw_image(struct mwl8k_priv *priv, | |
523 | const u8 *data, size_t length) | |
524 | { | |
525 | struct mwl8k_cmd_pkt *cmd; | |
526 | int done; | |
527 | int rc = 0; | |
528 | ||
529 | cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); | |
530 | if (cmd == NULL) | |
531 | return -ENOMEM; | |
532 | ||
533 | cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); | |
534 | cmd->seq_num = 0; | |
535 | cmd->result = 0; | |
536 | ||
537 | done = 0; | |
538 | while (length) { | |
539 | int block_size = length > 256 ? 256 : length; | |
540 | ||
541 | memcpy(cmd->payload, data + done, block_size); | |
542 | cmd->length = cpu_to_le16(block_size); | |
543 | ||
544 | rc = mwl8k_send_fw_load_cmd(priv, cmd, | |
545 | sizeof(*cmd) + block_size); | |
546 | if (rc) | |
547 | break; | |
548 | ||
549 | done += block_size; | |
550 | length -= block_size; | |
551 | } | |
552 | ||
553 | if (!rc) { | |
554 | cmd->length = 0; | |
555 | rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); | |
556 | } | |
557 | ||
558 | kfree(cmd); | |
559 | ||
560 | return rc; | |
561 | } | |
562 | ||
563 | static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, | |
564 | const u8 *data, size_t length) | |
565 | { | |
566 | unsigned char *buffer; | |
567 | int may_continue, rc = 0; | |
568 | u32 done, prev_block_size; | |
569 | ||
570 | buffer = kmalloc(1024, GFP_KERNEL); | |
571 | if (buffer == NULL) | |
572 | return -ENOMEM; | |
573 | ||
574 | done = 0; | |
575 | prev_block_size = 0; | |
576 | may_continue = 1000; | |
577 | while (may_continue > 0) { | |
578 | u32 block_size; | |
579 | ||
580 | block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); | |
581 | if (block_size & 1) { | |
582 | block_size &= ~1; | |
583 | may_continue--; | |
584 | } else { | |
585 | done += prev_block_size; | |
586 | length -= prev_block_size; | |
587 | } | |
588 | ||
589 | if (block_size > 1024 || block_size > length) { | |
590 | rc = -EOVERFLOW; | |
591 | break; | |
592 | } | |
593 | ||
594 | if (length == 0) { | |
595 | rc = 0; | |
596 | break; | |
597 | } | |
598 | ||
599 | if (block_size == 0) { | |
600 | rc = -EPROTO; | |
601 | may_continue--; | |
602 | udelay(1); | |
603 | continue; | |
604 | } | |
605 | ||
606 | prev_block_size = block_size; | |
607 | memcpy(buffer, data + done, block_size); | |
608 | ||
609 | rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); | |
610 | if (rc) | |
611 | break; | |
612 | } | |
613 | ||
614 | if (!rc && length != 0) | |
615 | rc = -EREMOTEIO; | |
616 | ||
617 | kfree(buffer); | |
618 | ||
619 | return rc; | |
620 | } | |
621 | ||
622 | static int mwl8k_load_firmware(struct mwl8k_priv *priv) | |
623 | { | |
624 | int loops, rc; | |
625 | ||
626 | const u8 *ucode = priv->fw.ucode->data; | |
627 | size_t ucode_len = priv->fw.ucode->size; | |
628 | const u8 *helper = priv->fw.helper->data; | |
629 | size_t helper_len = priv->fw.helper->size; | |
630 | ||
631 | if (!memcmp(ucode, "\x01\x00\x00\x00", 4)) { | |
632 | rc = mwl8k_load_fw_image(priv, helper, helper_len); | |
633 | if (rc) { | |
634 | printk(KERN_ERR "%s: unable to load firmware " | |
635 | "helper image\n", pci_name(priv->pdev)); | |
636 | return rc; | |
637 | } | |
638 | msleep(1); | |
639 | ||
640 | rc = mwl8k_feed_fw_image(priv, ucode, ucode_len); | |
641 | } else { | |
642 | rc = mwl8k_load_fw_image(priv, ucode, ucode_len); | |
643 | } | |
644 | ||
645 | if (rc) { | |
646 | printk(KERN_ERR "%s: unable to load firmware data\n", | |
647 | pci_name(priv->pdev)); | |
648 | return rc; | |
649 | } | |
650 | ||
651 | iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); | |
652 | msleep(1); | |
653 | ||
654 | loops = 200000; | |
655 | do { | |
656 | if (ioread32(priv->regs + MWL8K_HIU_INT_CODE) | |
657 | == MWL8K_FWSTA_READY) | |
658 | break; | |
659 | udelay(1); | |
660 | } while (--loops); | |
661 | ||
662 | return loops ? 0 : -ETIMEDOUT; | |
663 | } | |
664 | ||
665 | ||
666 | /* | |
667 | * Defines shared between transmission and reception. | |
668 | */ | |
669 | /* HT control fields for firmware */ | |
670 | struct ewc_ht_info { | |
671 | __le16 control1; | |
672 | __le16 control2; | |
673 | __le16 control3; | |
674 | } __attribute__((packed)); | |
675 | ||
676 | /* Firmware Station database operations */ | |
677 | #define MWL8K_STA_DB_ADD_ENTRY 0 | |
678 | #define MWL8K_STA_DB_MODIFY_ENTRY 1 | |
679 | #define MWL8K_STA_DB_DEL_ENTRY 2 | |
680 | #define MWL8K_STA_DB_FLUSH 3 | |
681 | ||
682 | /* Peer Entry flags - used to define the type of the peer node */ | |
683 | #define MWL8K_PEER_TYPE_ACCESSPOINT 2 | |
684 | #define MWL8K_PEER_TYPE_ADHOC_STATION 4 | |
685 | ||
686 | #define MWL8K_IEEE_LEGACY_DATA_RATES 12 | |
687 | #define MWL8K_MCS_BITMAP_SIZE 16 | |
688 | #define pad_size 16 | |
689 | ||
690 | struct peer_capability_info { | |
691 | /* Peer type - AP vs. STA. */ | |
692 | __u8 peer_type; | |
693 | ||
694 | /* Basic 802.11 capabilities from assoc resp. */ | |
695 | __le16 basic_caps; | |
696 | ||
697 | /* Set if peer supports 802.11n high throughput (HT). */ | |
698 | __u8 ht_support; | |
699 | ||
700 | /* Valid if HT is supported. */ | |
701 | __le16 ht_caps; | |
702 | __u8 extended_ht_caps; | |
703 | struct ewc_ht_info ewc_info; | |
704 | ||
705 | /* Legacy rate table. Intersection of our rates and peer rates. */ | |
706 | __u8 legacy_rates[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
707 | ||
708 | /* HT rate table. Intersection of our rates and peer rates. */ | |
709 | __u8 ht_rates[MWL8K_MCS_BITMAP_SIZE]; | |
710 | __u8 pad[pad_size]; | |
711 | ||
712 | /* If set, interoperability mode, no proprietary extensions. */ | |
713 | __u8 interop; | |
714 | __u8 pad2; | |
715 | __u8 station_id; | |
716 | __le16 amsdu_enabled; | |
717 | } __attribute__((packed)); | |
718 | ||
719 | /* Inline functions to manipulate QoS field in data descriptor. */ | |
720 | static inline u16 mwl8k_qos_setbit_tid(u16 qos, u8 tid) | |
721 | { | |
722 | u16 val_mask = 0x000f; | |
723 | u16 qos_mask = ~val_mask; | |
724 | ||
725 | /* TID bits 0-3 */ | |
726 | return (qos & qos_mask) | (tid & val_mask); | |
727 | } | |
728 | ||
729 | static inline u16 mwl8k_qos_setbit_eosp(u16 qos) | |
730 | { | |
731 | u16 val_mask = 1 << 4; | |
732 | ||
733 | /* End of Service Period Bit 4 */ | |
734 | return qos | val_mask; | |
735 | } | |
736 | ||
737 | static inline u16 mwl8k_qos_setbit_ack(u16 qos, u8 ack_policy) | |
738 | { | |
739 | u16 val_mask = 0x3; | |
740 | u8 shift = 5; | |
741 | u16 qos_mask = ~(val_mask << shift); | |
742 | ||
743 | /* Ack Policy Bit 5-6 */ | |
744 | return (qos & qos_mask) | ((ack_policy & val_mask) << shift); | |
745 | } | |
746 | ||
747 | static inline u16 mwl8k_qos_setbit_amsdu(u16 qos) | |
748 | { | |
749 | u16 val_mask = 1 << 7; | |
750 | ||
751 | /* AMSDU present Bit 7 */ | |
752 | return qos | val_mask; | |
753 | } | |
754 | ||
755 | static inline u16 mwl8k_qos_setbit_qlen(u16 qos, u8 len) | |
756 | { | |
757 | u16 val_mask = 0xff; | |
758 | u8 shift = 8; | |
759 | u16 qos_mask = ~(val_mask << shift); | |
760 | ||
761 | /* Queue Length Bits 8-15 */ | |
762 | return (qos & qos_mask) | ((len & val_mask) << shift); | |
763 | } | |
764 | ||
765 | /* DMA header used by firmware and hardware. */ | |
766 | struct mwl8k_dma_data { | |
767 | __le16 fwlen; | |
768 | struct ieee80211_hdr wh; | |
769 | } __attribute__((packed)); | |
770 | ||
771 | /* Routines to add/remove DMA header from skb. */ | |
772 | static inline int mwl8k_remove_dma_header(struct sk_buff *skb) | |
773 | { | |
774 | struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)(skb->data); | |
775 | void *dst, *src = &tr->wh; | |
776 | __le16 fc = tr->wh.frame_control; | |
777 | int hdrlen = ieee80211_hdrlen(fc); | |
778 | u16 space = sizeof(struct mwl8k_dma_data) - hdrlen; | |
779 | ||
780 | dst = (void *)tr + space; | |
781 | if (dst != src) { | |
782 | memmove(dst, src, hdrlen); | |
783 | skb_pull(skb, space); | |
784 | } | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
789 | static inline struct sk_buff *mwl8k_add_dma_header(struct sk_buff *skb) | |
790 | { | |
791 | struct ieee80211_hdr *wh; | |
792 | u32 hdrlen, pktlen; | |
793 | struct mwl8k_dma_data *tr; | |
794 | ||
795 | wh = (struct ieee80211_hdr *)skb->data; | |
796 | hdrlen = ieee80211_hdrlen(wh->frame_control); | |
797 | pktlen = skb->len; | |
798 | ||
799 | /* | |
800 | * Copy up/down the 802.11 header; the firmware requires | |
801 | * we present a 2-byte payload length followed by a | |
802 | * 4-address header (w/o QoS), followed (optionally) by | |
803 | * any WEP/ExtIV header (but only filled in for CCMP). | |
804 | */ | |
805 | if (hdrlen != sizeof(struct mwl8k_dma_data)) | |
806 | skb_push(skb, sizeof(struct mwl8k_dma_data) - hdrlen); | |
807 | ||
808 | tr = (struct mwl8k_dma_data *)skb->data; | |
809 | if (wh != &tr->wh) | |
810 | memmove(&tr->wh, wh, hdrlen); | |
811 | ||
812 | /* Clear addr4 */ | |
813 | memset(tr->wh.addr4, 0, IEEE80211_ADDR_LEN); | |
814 | ||
815 | /* | |
816 | * Firmware length is the length of the fully formed "802.11 | |
817 | * payload". That is, everything except for the 802.11 header. | |
818 | * This includes all crypto material including the MIC. | |
819 | */ | |
820 | tr->fwlen = cpu_to_le16(pktlen - hdrlen); | |
821 | ||
822 | return skb; | |
823 | } | |
824 | ||
825 | ||
826 | /* | |
827 | * Packet reception. | |
828 | */ | |
829 | #define MWL8K_RX_CTRL_KEY_INDEX_MASK 0x30 | |
830 | #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02 | |
831 | #define MWL8K_RX_CTRL_AMPDU 0x01 | |
832 | ||
833 | struct mwl8k_rx_desc { | |
834 | __le16 pkt_len; | |
835 | __u8 link_quality; | |
836 | __u8 noise_level; | |
837 | __le32 pkt_phys_addr; | |
838 | __le32 next_rx_desc_phys_addr; | |
839 | __le16 qos_control; | |
840 | __le16 rate_info; | |
841 | __le32 pad0[4]; | |
842 | __u8 rssi; | |
843 | __u8 channel; | |
844 | __le16 pad1; | |
845 | __u8 rx_ctrl; | |
846 | __u8 rx_status; | |
847 | __u8 pad2[2]; | |
848 | } __attribute__((packed)); | |
849 | ||
850 | #define MWL8K_RX_DESCS 256 | |
851 | #define MWL8K_RX_MAXSZ 3800 | |
852 | ||
853 | static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) | |
854 | { | |
855 | struct mwl8k_priv *priv = hw->priv; | |
856 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
857 | int size; | |
858 | int i; | |
859 | ||
860 | rxq->rx_desc_count = 0; | |
861 | rxq->rx_head = 0; | |
862 | rxq->rx_tail = 0; | |
863 | ||
864 | size = MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc); | |
865 | ||
866 | rxq->rx_desc_area = | |
867 | pci_alloc_consistent(priv->pdev, size, &rxq->rx_desc_dma); | |
868 | if (rxq->rx_desc_area == NULL) { | |
869 | printk(KERN_ERR "%s: failed to alloc RX descriptors\n", | |
870 | priv->name); | |
871 | return -ENOMEM; | |
872 | } | |
873 | memset(rxq->rx_desc_area, 0, size); | |
874 | ||
875 | rxq->rx_skb = kmalloc(MWL8K_RX_DESCS * | |
876 | sizeof(*rxq->rx_skb), GFP_KERNEL); | |
877 | if (rxq->rx_skb == NULL) { | |
878 | printk(KERN_ERR "%s: failed to alloc RX skbuff list\n", | |
879 | priv->name); | |
880 | pci_free_consistent(priv->pdev, size, | |
881 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
882 | return -ENOMEM; | |
883 | } | |
884 | memset(rxq->rx_skb, 0, MWL8K_RX_DESCS * sizeof(*rxq->rx_skb)); | |
885 | ||
886 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
887 | struct mwl8k_rx_desc *rx_desc; | |
888 | int nexti; | |
889 | ||
890 | rx_desc = rxq->rx_desc_area + i; | |
891 | nexti = (i + 1) % MWL8K_RX_DESCS; | |
892 | ||
893 | rx_desc->next_rx_desc_phys_addr = | |
894 | cpu_to_le32(rxq->rx_desc_dma | |
895 | + nexti * sizeof(*rx_desc)); | |
c491bf12 | 896 | rx_desc->rx_ctrl = MWL8K_RX_CTRL_OWNED_BY_HOST; |
a66098da LB |
897 | } |
898 | ||
899 | return 0; | |
900 | } | |
901 | ||
902 | static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) | |
903 | { | |
904 | struct mwl8k_priv *priv = hw->priv; | |
905 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
906 | int refilled; | |
907 | ||
908 | refilled = 0; | |
909 | while (rxq->rx_desc_count < MWL8K_RX_DESCS && limit--) { | |
910 | struct sk_buff *skb; | |
911 | int rx; | |
912 | ||
913 | skb = dev_alloc_skb(MWL8K_RX_MAXSZ); | |
914 | if (skb == NULL) | |
915 | break; | |
916 | ||
917 | rxq->rx_desc_count++; | |
918 | ||
919 | rx = rxq->rx_tail; | |
920 | rxq->rx_tail = (rx + 1) % MWL8K_RX_DESCS; | |
921 | ||
922 | rxq->rx_desc_area[rx].pkt_phys_addr = | |
923 | cpu_to_le32(pci_map_single(priv->pdev, skb->data, | |
924 | MWL8K_RX_MAXSZ, DMA_FROM_DEVICE)); | |
925 | ||
926 | rxq->rx_desc_area[rx].pkt_len = cpu_to_le16(MWL8K_RX_MAXSZ); | |
927 | rxq->rx_skb[rx] = skb; | |
928 | wmb(); | |
929 | rxq->rx_desc_area[rx].rx_ctrl = 0; | |
930 | ||
931 | refilled++; | |
932 | } | |
933 | ||
934 | return refilled; | |
935 | } | |
936 | ||
937 | /* Must be called only when the card's reception is completely halted */ | |
938 | static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) | |
939 | { | |
940 | struct mwl8k_priv *priv = hw->priv; | |
941 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
942 | int i; | |
943 | ||
944 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
945 | if (rxq->rx_skb[i] != NULL) { | |
946 | unsigned long addr; | |
947 | ||
948 | addr = le32_to_cpu(rxq->rx_desc_area[i].pkt_phys_addr); | |
949 | pci_unmap_single(priv->pdev, addr, MWL8K_RX_MAXSZ, | |
950 | PCI_DMA_FROMDEVICE); | |
951 | kfree_skb(rxq->rx_skb[i]); | |
952 | rxq->rx_skb[i] = NULL; | |
953 | } | |
954 | } | |
955 | ||
956 | kfree(rxq->rx_skb); | |
957 | rxq->rx_skb = NULL; | |
958 | ||
959 | pci_free_consistent(priv->pdev, | |
960 | MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc), | |
961 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
962 | rxq->rx_desc_area = NULL; | |
963 | } | |
964 | ||
965 | ||
966 | /* | |
967 | * Scan a list of BSSIDs to process for finalize join. | |
968 | * Allows for extension to process multiple BSSIDs. | |
969 | */ | |
970 | static inline int | |
971 | mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) | |
972 | { | |
973 | return priv->capture_beacon && | |
974 | ieee80211_is_beacon(wh->frame_control) && | |
975 | !compare_ether_addr(wh->addr3, priv->capture_bssid); | |
976 | } | |
977 | ||
978 | static inline void mwl8k_save_beacon(struct mwl8k_priv *priv, | |
979 | struct sk_buff *skb) | |
980 | { | |
981 | priv->capture_beacon = false; | |
982 | memset(priv->capture_bssid, 0, IEEE80211_ADDR_LEN); | |
983 | ||
984 | /* | |
985 | * Use GFP_ATOMIC as rxq_process is called from | |
986 | * the primary interrupt handler, memory allocation call | |
987 | * must not sleep. | |
988 | */ | |
989 | priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); | |
990 | if (priv->beacon_skb != NULL) | |
991 | queue_work(priv->config_wq, | |
992 | &priv->finalize_join_worker); | |
993 | } | |
994 | ||
995 | static int rxq_process(struct ieee80211_hw *hw, int index, int limit) | |
996 | { | |
997 | struct mwl8k_priv *priv = hw->priv; | |
998 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
999 | int processed; | |
1000 | ||
1001 | processed = 0; | |
1002 | while (rxq->rx_desc_count && limit--) { | |
1003 | struct mwl8k_rx_desc *rx_desc; | |
1004 | struct sk_buff *skb; | |
1005 | struct ieee80211_rx_status status; | |
1006 | unsigned long addr; | |
1007 | struct ieee80211_hdr *wh; | |
1008 | ||
1009 | rx_desc = rxq->rx_desc_area + rxq->rx_head; | |
1010 | if (!(rx_desc->rx_ctrl & MWL8K_RX_CTRL_OWNED_BY_HOST)) | |
1011 | break; | |
1012 | rmb(); | |
1013 | ||
1014 | skb = rxq->rx_skb[rxq->rx_head]; | |
d25f9f13 LB |
1015 | if (skb == NULL) |
1016 | break; | |
a66098da LB |
1017 | rxq->rx_skb[rxq->rx_head] = NULL; |
1018 | ||
1019 | rxq->rx_head = (rxq->rx_head + 1) % MWL8K_RX_DESCS; | |
1020 | rxq->rx_desc_count--; | |
1021 | ||
1022 | addr = le32_to_cpu(rx_desc->pkt_phys_addr); | |
1023 | pci_unmap_single(priv->pdev, addr, | |
1024 | MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); | |
1025 | ||
1026 | skb_put(skb, le16_to_cpu(rx_desc->pkt_len)); | |
1027 | if (mwl8k_remove_dma_header(skb)) { | |
1028 | dev_kfree_skb(skb); | |
1029 | continue; | |
1030 | } | |
1031 | ||
1032 | wh = (struct ieee80211_hdr *)skb->data; | |
1033 | ||
1034 | /* | |
1035 | * Check for pending join operation. save a copy of | |
1036 | * the beacon and schedule a tasklet to send finalize | |
1037 | * join command to the firmware. | |
1038 | */ | |
1039 | if (mwl8k_capture_bssid(priv, wh)) | |
1040 | mwl8k_save_beacon(priv, skb); | |
1041 | ||
1042 | memset(&status, 0, sizeof(status)); | |
1043 | status.mactime = 0; | |
1044 | status.signal = -rx_desc->rssi; | |
1045 | status.noise = -rx_desc->noise_level; | |
1046 | status.qual = rx_desc->link_quality; | |
1047 | status.antenna = 1; | |
1048 | status.rate_idx = 1; | |
1049 | status.flag = 0; | |
1050 | status.band = IEEE80211_BAND_2GHZ; | |
1051 | status.freq = ieee80211_channel_to_frequency(rx_desc->channel); | |
1052 | ieee80211_rx_irqsafe(hw, skb, &status); | |
1053 | ||
1054 | processed++; | |
1055 | } | |
1056 | ||
1057 | return processed; | |
1058 | } | |
1059 | ||
1060 | ||
1061 | /* | |
1062 | * Packet transmission. | |
1063 | */ | |
1064 | ||
1065 | /* Transmit queue assignment. */ | |
1066 | enum { | |
1067 | MWL8K_WME_AC_BK = 0, /* background access */ | |
1068 | MWL8K_WME_AC_BE = 1, /* best effort access */ | |
1069 | MWL8K_WME_AC_VI = 2, /* video access */ | |
1070 | MWL8K_WME_AC_VO = 3, /* voice access */ | |
1071 | }; | |
1072 | ||
1073 | /* Transmit packet ACK policy */ | |
1074 | #define MWL8K_TXD_ACK_POLICY_NORMAL 0 | |
1075 | #define MWL8K_TXD_ACK_POLICY_NONE 1 | |
1076 | #define MWL8K_TXD_ACK_POLICY_NO_EXPLICIT 2 | |
1077 | #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3 | |
1078 | ||
1079 | #define GET_TXQ(_ac) (\ | |
1080 | ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \ | |
1081 | ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \ | |
1082 | ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \ | |
1083 | MWL8K_WME_AC_BE) | |
1084 | ||
1085 | #define MWL8K_TXD_STATUS_IDLE 0x00000000 | |
1086 | #define MWL8K_TXD_STATUS_USED 0x00000001 | |
1087 | #define MWL8K_TXD_STATUS_OK 0x00000001 | |
1088 | #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 | |
1089 | #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 | |
1090 | #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 | |
1091 | #define MWL8K_TXD_STATUS_BROADCAST_TX 0x00000010 | |
1092 | #define MWL8K_TXD_STATUS_FAILED_LINK_ERROR 0x00000020 | |
1093 | #define MWL8K_TXD_STATUS_FAILED_EXCEED_LIMIT 0x00000040 | |
1094 | #define MWL8K_TXD_STATUS_FAILED_AGING 0x00000080 | |
1095 | #define MWL8K_TXD_STATUS_HOST_CMD 0x40000000 | |
1096 | #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 | |
1097 | #define MWL8K_TXD_SOFTSTALE 0x80 | |
1098 | #define MWL8K_TXD_SOFTSTALE_MGMT_RETRY 0x01 | |
1099 | ||
1100 | struct mwl8k_tx_desc { | |
1101 | __le32 status; | |
1102 | __u8 data_rate; | |
1103 | __u8 tx_priority; | |
1104 | __le16 qos_control; | |
1105 | __le32 pkt_phys_addr; | |
1106 | __le16 pkt_len; | |
1107 | __u8 dest_MAC_addr[IEEE80211_ADDR_LEN]; | |
1108 | __le32 next_tx_desc_phys_addr; | |
1109 | __le32 reserved; | |
1110 | __le16 rate_info; | |
1111 | __u8 peer_id; | |
1112 | __u8 tx_frag_cnt; | |
1113 | } __attribute__((packed)); | |
1114 | ||
1115 | #define MWL8K_TX_DESCS 128 | |
1116 | ||
1117 | static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) | |
1118 | { | |
1119 | struct mwl8k_priv *priv = hw->priv; | |
1120 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1121 | int size; | |
1122 | int i; | |
1123 | ||
1124 | memset(&txq->tx_stats, 0, | |
1125 | sizeof(struct ieee80211_tx_queue_stats)); | |
1126 | txq->tx_stats.limit = MWL8K_TX_DESCS; | |
1127 | txq->tx_head = 0; | |
1128 | txq->tx_tail = 0; | |
1129 | ||
1130 | size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); | |
1131 | ||
1132 | txq->tx_desc_area = | |
1133 | pci_alloc_consistent(priv->pdev, size, &txq->tx_desc_dma); | |
1134 | if (txq->tx_desc_area == NULL) { | |
1135 | printk(KERN_ERR "%s: failed to alloc TX descriptors\n", | |
1136 | priv->name); | |
1137 | return -ENOMEM; | |
1138 | } | |
1139 | memset(txq->tx_desc_area, 0, size); | |
1140 | ||
1141 | txq->tx_skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->tx_skb), | |
1142 | GFP_KERNEL); | |
1143 | if (txq->tx_skb == NULL) { | |
1144 | printk(KERN_ERR "%s: failed to alloc TX skbuff list\n", | |
1145 | priv->name); | |
1146 | pci_free_consistent(priv->pdev, size, | |
1147 | txq->tx_desc_area, txq->tx_desc_dma); | |
1148 | return -ENOMEM; | |
1149 | } | |
1150 | memset(txq->tx_skb, 0, MWL8K_TX_DESCS * sizeof(*txq->tx_skb)); | |
1151 | ||
1152 | for (i = 0; i < MWL8K_TX_DESCS; i++) { | |
1153 | struct mwl8k_tx_desc *tx_desc; | |
1154 | int nexti; | |
1155 | ||
1156 | tx_desc = txq->tx_desc_area + i; | |
1157 | nexti = (i + 1) % MWL8K_TX_DESCS; | |
1158 | ||
1159 | tx_desc->status = 0; | |
1160 | tx_desc->next_tx_desc_phys_addr = | |
1161 | cpu_to_le32(txq->tx_desc_dma + | |
1162 | nexti * sizeof(*tx_desc)); | |
1163 | } | |
1164 | ||
1165 | return 0; | |
1166 | } | |
1167 | ||
1168 | static inline void mwl8k_tx_start(struct mwl8k_priv *priv) | |
1169 | { | |
1170 | iowrite32(MWL8K_H2A_INT_PPA_READY, | |
1171 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1172 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
1173 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1174 | ioread32(priv->regs + MWL8K_HIU_INT_CODE); | |
1175 | } | |
1176 | ||
1177 | static inline int mwl8k_txq_busy(struct mwl8k_priv *priv) | |
1178 | { | |
1179 | return priv->pending_tx_pkts; | |
1180 | } | |
1181 | ||
1182 | struct mwl8k_txq_info { | |
1183 | u32 fw_owned; | |
1184 | u32 drv_owned; | |
1185 | u32 unused; | |
1186 | u32 len; | |
1187 | u32 head; | |
1188 | u32 tail; | |
1189 | }; | |
1190 | ||
1191 | static int mwl8k_scan_tx_ring(struct mwl8k_priv *priv, | |
1192 | struct mwl8k_txq_info txinfo[], | |
1193 | u32 num_queues) | |
1194 | { | |
1195 | int count, desc, status; | |
1196 | struct mwl8k_tx_queue *txq; | |
1197 | struct mwl8k_tx_desc *tx_desc; | |
1198 | int ndescs = 0; | |
1199 | ||
1200 | memset(txinfo, 0, num_queues * sizeof(struct mwl8k_txq_info)); | |
1201 | spin_lock_bh(&priv->tx_lock); | |
1202 | for (count = 0; count < num_queues; count++) { | |
1203 | txq = priv->txq + count; | |
1204 | txinfo[count].len = txq->tx_stats.len; | |
1205 | txinfo[count].head = txq->tx_head; | |
1206 | txinfo[count].tail = txq->tx_tail; | |
1207 | for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { | |
1208 | tx_desc = txq->tx_desc_area + desc; | |
1209 | status = le32_to_cpu(tx_desc->status); | |
1210 | ||
1211 | if (status & MWL8K_TXD_STATUS_FW_OWNED) | |
1212 | txinfo[count].fw_owned++; | |
1213 | else | |
1214 | txinfo[count].drv_owned++; | |
1215 | ||
1216 | if (tx_desc->pkt_len == 0) | |
1217 | txinfo[count].unused++; | |
1218 | } | |
1219 | } | |
1220 | spin_unlock_bh(&priv->tx_lock); | |
1221 | ||
1222 | return ndescs; | |
1223 | } | |
1224 | ||
1225 | static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw, u32 delay_ms) | |
1226 | { | |
1227 | u32 count = 0; | |
1228 | unsigned long timeout = 0; | |
1229 | struct mwl8k_priv *priv = hw->priv; | |
1230 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
1231 | ||
1232 | might_sleep(); | |
1233 | ||
1234 | if (priv->tx_wait != NULL) | |
1235 | printk(KERN_ERR "WARNING Previous TXWaitEmpty instance\n"); | |
1236 | ||
1237 | spin_lock_bh(&priv->tx_lock); | |
1238 | count = mwl8k_txq_busy(priv); | |
1239 | if (count) { | |
1240 | priv->tx_wait = &cmd_wait; | |
1241 | if (priv->radio_state) | |
1242 | mwl8k_tx_start(priv); | |
1243 | } | |
1244 | spin_unlock_bh(&priv->tx_lock); | |
1245 | ||
1246 | if (count) { | |
1247 | struct mwl8k_txq_info txinfo[4]; | |
1248 | int index; | |
1249 | int newcount; | |
1250 | ||
1251 | timeout = wait_for_completion_timeout(&cmd_wait, | |
1252 | msecs_to_jiffies(delay_ms)); | |
1253 | if (timeout) | |
1254 | return 0; | |
1255 | ||
1256 | spin_lock_bh(&priv->tx_lock); | |
1257 | priv->tx_wait = NULL; | |
1258 | newcount = mwl8k_txq_busy(priv); | |
1259 | spin_unlock_bh(&priv->tx_lock); | |
1260 | ||
1261 | printk(KERN_ERR "%s(%u) TIMEDOUT:%ums Pend:%u-->%u\n", | |
1262 | __func__, __LINE__, delay_ms, count, newcount); | |
1263 | ||
1264 | mwl8k_scan_tx_ring(priv, txinfo, 4); | |
1265 | for (index = 0 ; index < 4; index++) | |
1266 | printk(KERN_ERR | |
1267 | "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n", | |
1268 | index, | |
1269 | txinfo[index].len, | |
1270 | txinfo[index].head, | |
1271 | txinfo[index].tail, | |
1272 | txinfo[index].fw_owned, | |
1273 | txinfo[index].drv_owned, | |
1274 | txinfo[index].unused); | |
1275 | return -ETIMEDOUT; | |
1276 | } | |
1277 | ||
1278 | return 0; | |
1279 | } | |
1280 | ||
1281 | #define MWL8K_TXD_OK (MWL8K_TXD_STATUS_OK | \ | |
1282 | MWL8K_TXD_STATUS_OK_RETRY | \ | |
1283 | MWL8K_TXD_STATUS_OK_MORE_RETRY) | |
1284 | #define MWL8K_TXD_SUCCESS(stat) ((stat) & MWL8K_TXD_OK) | |
1285 | #define MWL8K_TXD_FAIL_RETRY(stat) \ | |
1286 | ((stat) & (MWL8K_TXD_STATUS_FAILED_EXCEED_LIMIT)) | |
1287 | ||
1288 | static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force) | |
1289 | { | |
1290 | struct mwl8k_priv *priv = hw->priv; | |
1291 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1292 | int wake = 0; | |
1293 | ||
1294 | while (txq->tx_stats.len > 0) { | |
1295 | int tx; | |
1296 | int rc; | |
1297 | struct mwl8k_tx_desc *tx_desc; | |
1298 | unsigned long addr; | |
1299 | size_t size; | |
1300 | struct sk_buff *skb; | |
1301 | struct ieee80211_tx_info *info; | |
1302 | u32 status; | |
1303 | ||
1304 | rc = 0; | |
1305 | tx = txq->tx_head; | |
1306 | tx_desc = txq->tx_desc_area + tx; | |
1307 | ||
1308 | status = le32_to_cpu(tx_desc->status); | |
1309 | ||
1310 | if (status & MWL8K_TXD_STATUS_FW_OWNED) { | |
1311 | if (!force) | |
1312 | break; | |
1313 | tx_desc->status &= | |
1314 | ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); | |
1315 | } | |
1316 | ||
1317 | txq->tx_head = (tx + 1) % MWL8K_TX_DESCS; | |
1318 | BUG_ON(txq->tx_stats.len == 0); | |
1319 | txq->tx_stats.len--; | |
1320 | priv->pending_tx_pkts--; | |
1321 | ||
1322 | addr = le32_to_cpu(tx_desc->pkt_phys_addr); | |
1323 | size = (u32)(le16_to_cpu(tx_desc->pkt_len)); | |
1324 | skb = txq->tx_skb[tx].skb; | |
1325 | txq->tx_skb[tx].skb = NULL; | |
1326 | ||
1327 | BUG_ON(skb == NULL); | |
1328 | pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE); | |
1329 | ||
1330 | rc = mwl8k_remove_dma_header(skb); | |
1331 | ||
1332 | /* Mark descriptor as unused */ | |
1333 | tx_desc->pkt_phys_addr = 0; | |
1334 | tx_desc->pkt_len = 0; | |
1335 | ||
1336 | if (txq->tx_skb[tx].clone) { | |
1337 | /* Replace with original skb | |
1338 | * before returning to stack | |
1339 | * as buffer has been cloned | |
1340 | */ | |
1341 | dev_kfree_skb(skb); | |
1342 | skb = txq->tx_skb[tx].clone; | |
1343 | txq->tx_skb[tx].clone = NULL; | |
1344 | } | |
1345 | ||
1346 | if (rc) { | |
1347 | /* Something has gone wrong here. | |
1348 | * Failed to remove DMA header. | |
1349 | * Print error message and drop packet. | |
1350 | */ | |
1351 | printk(KERN_ERR "%s: Error removing DMA header from " | |
1352 | "tx skb 0x%p.\n", priv->name, skb); | |
1353 | ||
1354 | dev_kfree_skb(skb); | |
1355 | continue; | |
1356 | } | |
1357 | ||
1358 | info = IEEE80211_SKB_CB(skb); | |
1359 | ieee80211_tx_info_clear_status(info); | |
1360 | ||
1361 | /* Convert firmware status stuff into tx_status */ | |
1362 | if (MWL8K_TXD_SUCCESS(status)) { | |
1363 | /* Transmit OK */ | |
1364 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1365 | } | |
1366 | ||
1367 | ieee80211_tx_status_irqsafe(hw, skb); | |
1368 | ||
1369 | wake = !priv->inconfig && priv->radio_state; | |
1370 | } | |
1371 | ||
1372 | if (wake) | |
1373 | ieee80211_wake_queue(hw, index); | |
1374 | } | |
1375 | ||
1376 | /* must be called only when the card's transmit is completely halted */ | |
1377 | static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) | |
1378 | { | |
1379 | struct mwl8k_priv *priv = hw->priv; | |
1380 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1381 | ||
1382 | mwl8k_txq_reclaim(hw, index, 1); | |
1383 | ||
1384 | kfree(txq->tx_skb); | |
1385 | txq->tx_skb = NULL; | |
1386 | ||
1387 | pci_free_consistent(priv->pdev, | |
1388 | MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), | |
1389 | txq->tx_desc_area, txq->tx_desc_dma); | |
1390 | txq->tx_desc_area = NULL; | |
1391 | } | |
1392 | ||
1393 | static int | |
1394 | mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) | |
1395 | { | |
1396 | struct mwl8k_priv *priv = hw->priv; | |
1397 | struct ieee80211_tx_info *tx_info; | |
1398 | struct ieee80211_hdr *wh; | |
1399 | struct mwl8k_tx_queue *txq; | |
1400 | struct mwl8k_tx_desc *tx; | |
1401 | struct mwl8k_dma_data *tr; | |
1402 | struct mwl8k_vif *mwl8k_vif; | |
1403 | struct sk_buff *org_skb = skb; | |
1404 | dma_addr_t dma; | |
1405 | u16 qos = 0; | |
1406 | bool qosframe = false, ampduframe = false; | |
1407 | bool mcframe = false, eapolframe = false; | |
1408 | bool amsduframe = false; | |
1409 | __le16 fc; | |
1410 | ||
1411 | txq = priv->txq + index; | |
1412 | tx = txq->tx_desc_area + txq->tx_tail; | |
1413 | ||
1414 | BUG_ON(txq->tx_skb[txq->tx_tail].skb != NULL); | |
1415 | ||
1416 | /* | |
1417 | * Append HW DMA header to start of packet. Drop packet if | |
1418 | * there is not enough space or a failure to unshare/unclone | |
1419 | * the skb. | |
1420 | */ | |
1421 | skb = mwl8k_add_dma_header(skb); | |
1422 | ||
1423 | if (skb == NULL) { | |
1424 | printk(KERN_DEBUG "%s: failed to prepend HW DMA " | |
1425 | "header, dropping TX frame.\n", priv->name); | |
1426 | dev_kfree_skb(org_skb); | |
1427 | return NETDEV_TX_OK; | |
1428 | } | |
1429 | ||
1430 | tx_info = IEEE80211_SKB_CB(skb); | |
1431 | mwl8k_vif = MWL8K_VIF(tx_info->control.vif); | |
1432 | tr = (struct mwl8k_dma_data *)skb->data; | |
1433 | wh = &tr->wh; | |
1434 | fc = wh->frame_control; | |
1435 | qosframe = ieee80211_is_data_qos(fc); | |
1436 | mcframe = is_multicast_ether_addr(wh->addr1); | |
1437 | ampduframe = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU); | |
1438 | ||
1439 | if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
1440 | u16 seqno = mwl8k_vif->seqno; | |
1441 | wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
1442 | wh->seq_ctrl |= cpu_to_le16(seqno << 4); | |
1443 | mwl8k_vif->seqno = seqno++ % 4096; | |
1444 | } | |
1445 | ||
1446 | if (qosframe) | |
1447 | qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); | |
1448 | ||
1449 | dma = pci_map_single(priv->pdev, skb->data, | |
1450 | skb->len, PCI_DMA_TODEVICE); | |
1451 | ||
1452 | if (pci_dma_mapping_error(priv->pdev, dma)) { | |
1453 | printk(KERN_DEBUG "%s: failed to dma map skb, " | |
1454 | "dropping TX frame.\n", priv->name); | |
1455 | ||
1456 | if (org_skb != NULL) | |
1457 | dev_kfree_skb(org_skb); | |
1458 | if (skb != NULL) | |
1459 | dev_kfree_skb(skb); | |
1460 | return NETDEV_TX_OK; | |
1461 | } | |
1462 | ||
1463 | /* Set desc header, cpu bit order. */ | |
1464 | tx->status = 0; | |
1465 | tx->data_rate = 0; | |
1466 | tx->tx_priority = index; | |
1467 | tx->qos_control = 0; | |
1468 | tx->rate_info = 0; | |
1469 | tx->peer_id = mwl8k_vif->peer_id; | |
1470 | ||
1471 | amsduframe = !!(qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT); | |
1472 | ||
1473 | /* Setup firmware control bit fields for each frame type. */ | |
1474 | if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) { | |
1475 | tx->data_rate = 0; | |
1476 | qos = mwl8k_qos_setbit_eosp(qos); | |
1477 | /* Set Queue size to unspecified */ | |
1478 | qos = mwl8k_qos_setbit_qlen(qos, 0xff); | |
1479 | } else if (ieee80211_is_data(fc)) { | |
1480 | tx->data_rate = 1; | |
1481 | if (mcframe) | |
1482 | tx->status |= MWL8K_TXD_STATUS_MULTICAST_TX; | |
1483 | ||
1484 | /* | |
1485 | * Tell firmware to not send EAPOL pkts in an | |
1486 | * aggregate. Verify against mac80211 tx path. If | |
1487 | * stack turns off AMPDU for an EAPOL frame this | |
1488 | * check will be removed. | |
1489 | */ | |
1490 | if (eapolframe) { | |
1491 | qos = mwl8k_qos_setbit_ack(qos, | |
1492 | MWL8K_TXD_ACK_POLICY_NORMAL); | |
1493 | } else { | |
1494 | /* Send pkt in an aggregate if AMPDU frame. */ | |
1495 | if (ampduframe) | |
1496 | qos = mwl8k_qos_setbit_ack(qos, | |
1497 | MWL8K_TXD_ACK_POLICY_BLOCKACK); | |
1498 | else | |
1499 | qos = mwl8k_qos_setbit_ack(qos, | |
1500 | MWL8K_TXD_ACK_POLICY_NORMAL); | |
1501 | ||
1502 | if (amsduframe) | |
1503 | qos = mwl8k_qos_setbit_amsdu(qos); | |
1504 | } | |
1505 | } | |
1506 | ||
1507 | /* Convert to little endian */ | |
1508 | tx->qos_control = cpu_to_le16(qos); | |
1509 | tx->status = cpu_to_le32(tx->status); | |
1510 | tx->pkt_phys_addr = cpu_to_le32(dma); | |
1511 | tx->pkt_len = cpu_to_le16(skb->len); | |
1512 | ||
1513 | txq->tx_skb[txq->tx_tail].skb = skb; | |
1514 | txq->tx_skb[txq->tx_tail].clone = | |
1515 | skb == org_skb ? NULL : org_skb; | |
1516 | ||
1517 | spin_lock_bh(&priv->tx_lock); | |
1518 | ||
1519 | tx->status = cpu_to_le32(MWL8K_TXD_STATUS_OK | | |
1520 | MWL8K_TXD_STATUS_FW_OWNED); | |
1521 | wmb(); | |
1522 | txq->tx_stats.len++; | |
1523 | priv->pending_tx_pkts++; | |
1524 | txq->tx_stats.count++; | |
1525 | txq->tx_tail++; | |
1526 | ||
1527 | if (txq->tx_tail == MWL8K_TX_DESCS) | |
1528 | txq->tx_tail = 0; | |
1529 | if (txq->tx_head == txq->tx_tail) | |
1530 | ieee80211_stop_queue(hw, index); | |
1531 | ||
1532 | if (priv->inconfig) { | |
1533 | /* | |
1534 | * Silently queue packet when we are in the middle of | |
1535 | * a config cycle. Notify firmware only if we are | |
1536 | * waiting for TXQs to empty. If a packet is sent | |
1537 | * before .config() is complete, perhaps it is better | |
1538 | * to drop the packet, as the channel is being changed | |
1539 | * and the packet will end up on the wrong channel. | |
1540 | */ | |
1541 | printk(KERN_ERR "%s(): WARNING TX activity while " | |
1542 | "in config\n", __func__); | |
1543 | ||
1544 | if (priv->tx_wait != NULL) | |
1545 | mwl8k_tx_start(priv); | |
1546 | } else | |
1547 | mwl8k_tx_start(priv); | |
1548 | ||
1549 | spin_unlock_bh(&priv->tx_lock); | |
1550 | ||
1551 | return NETDEV_TX_OK; | |
1552 | } | |
1553 | ||
1554 | ||
1555 | /* | |
1556 | * Command processing. | |
1557 | */ | |
1558 | ||
1559 | /* Timeout firmware commands after 2000ms */ | |
1560 | #define MWL8K_CMD_TIMEOUT_MS 2000 | |
1561 | ||
1562 | static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) | |
1563 | { | |
1564 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
1565 | struct mwl8k_priv *priv = hw->priv; | |
1566 | void __iomem *regs = priv->regs; | |
1567 | dma_addr_t dma_addr; | |
1568 | unsigned int dma_size; | |
1569 | int rc; | |
1570 | u16 __iomem *result; | |
1571 | unsigned long timeout = 0; | |
1572 | u8 buf[32]; | |
1573 | ||
1574 | cmd->result = 0xFFFF; | |
1575 | dma_size = le16_to_cpu(cmd->length); | |
1576 | dma_addr = pci_map_single(priv->pdev, cmd, dma_size, | |
1577 | PCI_DMA_BIDIRECTIONAL); | |
1578 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
1579 | return -ENOMEM; | |
1580 | ||
1581 | if (priv->hostcmd_wait != NULL) | |
1582 | printk(KERN_ERR "WARNING host command in progress\n"); | |
1583 | ||
1584 | spin_lock_irq(&priv->fw_lock); | |
1585 | priv->hostcmd_wait = &cmd_wait; | |
1586 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
1587 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
1588 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1589 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
1590 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1591 | spin_unlock_irq(&priv->fw_lock); | |
1592 | ||
1593 | timeout = wait_for_completion_timeout(&cmd_wait, | |
1594 | msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); | |
1595 | ||
1596 | result = &cmd->result; | |
1597 | if (!timeout) { | |
1598 | spin_lock_irq(&priv->fw_lock); | |
1599 | priv->hostcmd_wait = NULL; | |
1600 | spin_unlock_irq(&priv->fw_lock); | |
1601 | printk(KERN_ERR "%s: Command %s timeout after %u ms\n", | |
1602 | priv->name, | |
1603 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
1604 | MWL8K_CMD_TIMEOUT_MS); | |
1605 | rc = -ETIMEDOUT; | |
1606 | } else { | |
1607 | rc = *result ? -EINVAL : 0; | |
1608 | if (rc) | |
1609 | printk(KERN_ERR "%s: Command %s error 0x%x\n", | |
1610 | priv->name, | |
1611 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
1612 | *result); | |
1613 | } | |
1614 | ||
1615 | pci_unmap_single(priv->pdev, dma_addr, dma_size, | |
1616 | PCI_DMA_BIDIRECTIONAL); | |
1617 | return rc; | |
1618 | } | |
1619 | ||
1620 | /* | |
1621 | * GET_HW_SPEC. | |
1622 | */ | |
1623 | struct mwl8k_cmd_get_hw_spec { | |
1624 | struct mwl8k_cmd_pkt header; | |
1625 | __u8 hw_rev; | |
1626 | __u8 host_interface; | |
1627 | __le16 num_mcaddrs; | |
1628 | __u8 perm_addr[IEEE80211_ADDR_LEN]; | |
1629 | __le16 region_code; | |
1630 | __le32 fw_rev; | |
1631 | __le32 ps_cookie; | |
1632 | __le32 caps; | |
1633 | __u8 mcs_bitmap[16]; | |
1634 | __le32 rx_queue_ptr; | |
1635 | __le32 num_tx_queues; | |
1636 | __le32 tx_queue_ptrs[MWL8K_TX_QUEUES]; | |
1637 | __le32 caps2; | |
1638 | __le32 num_tx_desc_per_queue; | |
1639 | __le32 total_rx_desc; | |
1640 | } __attribute__((packed)); | |
1641 | ||
1642 | static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw *hw) | |
1643 | { | |
1644 | struct mwl8k_priv *priv = hw->priv; | |
1645 | struct mwl8k_cmd_get_hw_spec *cmd; | |
1646 | int rc; | |
1647 | int i; | |
1648 | ||
1649 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1650 | if (cmd == NULL) | |
1651 | return -ENOMEM; | |
1652 | ||
1653 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); | |
1654 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1655 | ||
1656 | memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); | |
1657 | cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); | |
1658 | cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rx_desc_dma); | |
4ff6432e | 1659 | cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES); |
a66098da LB |
1660 | for (i = 0; i < MWL8K_TX_QUEUES; i++) |
1661 | cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].tx_desc_dma); | |
4ff6432e LB |
1662 | cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); |
1663 | cmd->total_rx_desc = cpu_to_le32(MWL8K_RX_DESCS); | |
a66098da LB |
1664 | |
1665 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1666 | ||
1667 | if (!rc) { | |
1668 | SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); | |
1669 | priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); | |
4ff6432e | 1670 | priv->fw_rev = le32_to_cpu(cmd->fw_rev); |
a66098da LB |
1671 | priv->hw_rev = cmd->hw_rev; |
1672 | priv->region_code = le16_to_cpu(cmd->region_code); | |
1673 | } | |
1674 | ||
1675 | kfree(cmd); | |
1676 | return rc; | |
1677 | } | |
1678 | ||
1679 | /* | |
1680 | * CMD_MAC_MULTICAST_ADR. | |
1681 | */ | |
1682 | struct mwl8k_cmd_mac_multicast_adr { | |
1683 | struct mwl8k_cmd_pkt header; | |
1684 | __le16 action; | |
1685 | __le16 numaddr; | |
1686 | __u8 addr[1][IEEE80211_ADDR_LEN]; | |
1687 | }; | |
1688 | ||
1689 | #define MWL8K_ENABLE_RX_MULTICAST 0x000F | |
1690 | static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, | |
1691 | int mc_count, | |
1692 | struct dev_addr_list *mclist) | |
1693 | { | |
1694 | struct mwl8k_cmd_mac_multicast_adr *cmd; | |
1695 | int index = 0; | |
1696 | int rc; | |
1697 | int size = sizeof(*cmd) + ((mc_count - 1) * IEEE80211_ADDR_LEN); | |
1698 | cmd = kzalloc(size, GFP_KERNEL); | |
1699 | if (cmd == NULL) | |
1700 | return -ENOMEM; | |
1701 | ||
1702 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); | |
1703 | cmd->header.length = cpu_to_le16(size); | |
1704 | cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); | |
1705 | cmd->numaddr = cpu_to_le16(mc_count); | |
1706 | while ((index < mc_count) && mclist) { | |
1707 | if (mclist->da_addrlen != IEEE80211_ADDR_LEN) { | |
1708 | rc = -EINVAL; | |
1709 | goto mwl8k_cmd_mac_multicast_adr_exit; | |
1710 | } | |
1711 | memcpy(cmd->addr[index], mclist->da_addr, IEEE80211_ADDR_LEN); | |
1712 | index++; | |
1713 | mclist = mclist->next; | |
1714 | } | |
1715 | ||
1716 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1717 | ||
1718 | mwl8k_cmd_mac_multicast_adr_exit: | |
1719 | kfree(cmd); | |
1720 | return rc; | |
1721 | } | |
1722 | ||
1723 | /* | |
1724 | * CMD_802_11_GET_STAT. | |
1725 | */ | |
1726 | struct mwl8k_cmd_802_11_get_stat { | |
1727 | struct mwl8k_cmd_pkt header; | |
1728 | __le16 action; | |
1729 | __le32 stats[64]; | |
1730 | } __attribute__((packed)); | |
1731 | ||
1732 | #define MWL8K_STAT_ACK_FAILURE 9 | |
1733 | #define MWL8K_STAT_RTS_FAILURE 12 | |
1734 | #define MWL8K_STAT_FCS_ERROR 24 | |
1735 | #define MWL8K_STAT_RTS_SUCCESS 11 | |
1736 | ||
1737 | static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw *hw, | |
1738 | struct ieee80211_low_level_stats *stats) | |
1739 | { | |
1740 | struct mwl8k_cmd_802_11_get_stat *cmd; | |
1741 | int rc; | |
1742 | ||
1743 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1744 | if (cmd == NULL) | |
1745 | return -ENOMEM; | |
1746 | ||
1747 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); | |
1748 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1749 | cmd->action = cpu_to_le16(MWL8K_CMD_GET); | |
1750 | ||
1751 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1752 | if (!rc) { | |
1753 | stats->dot11ACKFailureCount = | |
1754 | le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); | |
1755 | stats->dot11RTSFailureCount = | |
1756 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); | |
1757 | stats->dot11FCSErrorCount = | |
1758 | le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); | |
1759 | stats->dot11RTSSuccessCount = | |
1760 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); | |
1761 | } | |
1762 | kfree(cmd); | |
1763 | ||
1764 | return rc; | |
1765 | } | |
1766 | ||
1767 | /* | |
1768 | * CMD_802_11_RADIO_CONTROL. | |
1769 | */ | |
1770 | struct mwl8k_cmd_802_11_radio_control { | |
1771 | struct mwl8k_cmd_pkt header; | |
1772 | __le16 action; | |
1773 | __le16 control; | |
1774 | __le16 radio_on; | |
1775 | } __attribute__((packed)); | |
1776 | ||
1777 | static int mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, int enable) | |
1778 | { | |
1779 | struct mwl8k_priv *priv = hw->priv; | |
1780 | struct mwl8k_cmd_802_11_radio_control *cmd; | |
1781 | int rc; | |
1782 | ||
1783 | if (((enable & MWL8K_RADIO_ENABLE) == priv->radio_state) && | |
1784 | !(enable & MWL8K_RADIO_FORCE)) | |
1785 | return 0; | |
1786 | ||
1787 | enable &= MWL8K_RADIO_ENABLE; | |
1788 | ||
1789 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1790 | if (cmd == NULL) | |
1791 | return -ENOMEM; | |
1792 | ||
1793 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); | |
1794 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1795 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1796 | cmd->control = cpu_to_le16(priv->radio_preamble); | |
1797 | cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); | |
1798 | ||
1799 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1800 | kfree(cmd); | |
1801 | ||
1802 | if (!rc) | |
1803 | priv->radio_state = enable; | |
1804 | ||
1805 | return rc; | |
1806 | } | |
1807 | ||
1808 | static int | |
1809 | mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) | |
1810 | { | |
1811 | struct mwl8k_priv *priv; | |
1812 | ||
1813 | if (hw == NULL || hw->priv == NULL) | |
1814 | return -EINVAL; | |
1815 | priv = hw->priv; | |
1816 | ||
1817 | priv->radio_preamble = (short_preamble ? | |
1818 | MWL8K_RADIO_SHORT_PREAMBLE : | |
1819 | MWL8K_RADIO_LONG_PREAMBLE); | |
1820 | ||
1821 | return mwl8k_cmd_802_11_radio_control(hw, | |
1822 | MWL8K_RADIO_ENABLE | MWL8K_RADIO_FORCE); | |
1823 | } | |
1824 | ||
1825 | /* | |
1826 | * CMD_802_11_RF_TX_POWER. | |
1827 | */ | |
1828 | #define MWL8K_TX_POWER_LEVEL_TOTAL 8 | |
1829 | ||
1830 | struct mwl8k_cmd_802_11_rf_tx_power { | |
1831 | struct mwl8k_cmd_pkt header; | |
1832 | __le16 action; | |
1833 | __le16 support_level; | |
1834 | __le16 current_level; | |
1835 | __le16 reserved; | |
1836 | __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; | |
1837 | } __attribute__((packed)); | |
1838 | ||
1839 | static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw *hw, int dBm) | |
1840 | { | |
1841 | struct mwl8k_cmd_802_11_rf_tx_power *cmd; | |
1842 | int rc; | |
1843 | ||
1844 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1845 | if (cmd == NULL) | |
1846 | return -ENOMEM; | |
1847 | ||
1848 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); | |
1849 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1850 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1851 | cmd->support_level = cpu_to_le16(dBm); | |
1852 | ||
1853 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1854 | kfree(cmd); | |
1855 | ||
1856 | return rc; | |
1857 | } | |
1858 | ||
1859 | /* | |
1860 | * CMD_SET_PRE_SCAN. | |
1861 | */ | |
1862 | struct mwl8k_cmd_set_pre_scan { | |
1863 | struct mwl8k_cmd_pkt header; | |
1864 | } __attribute__((packed)); | |
1865 | ||
1866 | static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) | |
1867 | { | |
1868 | struct mwl8k_cmd_set_pre_scan *cmd; | |
1869 | int rc; | |
1870 | ||
1871 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1872 | if (cmd == NULL) | |
1873 | return -ENOMEM; | |
1874 | ||
1875 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); | |
1876 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1877 | ||
1878 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1879 | kfree(cmd); | |
1880 | ||
1881 | return rc; | |
1882 | } | |
1883 | ||
1884 | /* | |
1885 | * CMD_SET_POST_SCAN. | |
1886 | */ | |
1887 | struct mwl8k_cmd_set_post_scan { | |
1888 | struct mwl8k_cmd_pkt header; | |
1889 | __le32 isibss; | |
1890 | __u8 bssid[IEEE80211_ADDR_LEN]; | |
1891 | } __attribute__((packed)); | |
1892 | ||
1893 | static int | |
1894 | mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 mac[IEEE80211_ADDR_LEN]) | |
1895 | { | |
1896 | struct mwl8k_cmd_set_post_scan *cmd; | |
1897 | int rc; | |
1898 | ||
1899 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1900 | if (cmd == NULL) | |
1901 | return -ENOMEM; | |
1902 | ||
1903 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); | |
1904 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1905 | cmd->isibss = 0; | |
1906 | memcpy(cmd->bssid, mac, IEEE80211_ADDR_LEN); | |
1907 | ||
1908 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1909 | kfree(cmd); | |
1910 | ||
1911 | return rc; | |
1912 | } | |
1913 | ||
1914 | /* | |
1915 | * CMD_SET_RF_CHANNEL. | |
1916 | */ | |
1917 | struct mwl8k_cmd_set_rf_channel { | |
1918 | struct mwl8k_cmd_pkt header; | |
1919 | __le16 action; | |
1920 | __u8 current_channel; | |
1921 | __le32 channel_flags; | |
1922 | } __attribute__((packed)); | |
1923 | ||
1924 | static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, | |
1925 | struct ieee80211_channel *channel) | |
1926 | { | |
1927 | struct mwl8k_cmd_set_rf_channel *cmd; | |
1928 | int rc; | |
1929 | ||
1930 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1931 | if (cmd == NULL) | |
1932 | return -ENOMEM; | |
1933 | ||
1934 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); | |
1935 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1936 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1937 | cmd->current_channel = channel->hw_value; | |
1938 | if (channel->band == IEEE80211_BAND_2GHZ) | |
1939 | cmd->channel_flags = cpu_to_le32(0x00000081); | |
1940 | else | |
1941 | cmd->channel_flags = cpu_to_le32(0x00000000); | |
1942 | ||
1943 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1944 | kfree(cmd); | |
1945 | ||
1946 | return rc; | |
1947 | } | |
1948 | ||
1949 | /* | |
1950 | * CMD_SET_SLOT. | |
1951 | */ | |
1952 | struct mwl8k_cmd_set_slot { | |
1953 | struct mwl8k_cmd_pkt header; | |
1954 | __le16 action; | |
1955 | __u8 short_slot; | |
1956 | } __attribute__((packed)); | |
1957 | ||
1958 | static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, int slot_time) | |
1959 | { | |
1960 | struct mwl8k_cmd_set_slot *cmd; | |
1961 | int rc; | |
1962 | ||
1963 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1964 | if (cmd == NULL) | |
1965 | return -ENOMEM; | |
1966 | ||
1967 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); | |
1968 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1969 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1970 | cmd->short_slot = slot_time == MWL8K_SHORT_SLOTTIME ? 1 : 0; | |
1971 | ||
1972 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1973 | kfree(cmd); | |
1974 | ||
1975 | return rc; | |
1976 | } | |
1977 | ||
1978 | /* | |
1979 | * CMD_MIMO_CONFIG. | |
1980 | */ | |
1981 | struct mwl8k_cmd_mimo_config { | |
1982 | struct mwl8k_cmd_pkt header; | |
1983 | __le32 action; | |
1984 | __u8 rx_antenna_map; | |
1985 | __u8 tx_antenna_map; | |
1986 | } __attribute__((packed)); | |
1987 | ||
1988 | static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) | |
1989 | { | |
1990 | struct mwl8k_cmd_mimo_config *cmd; | |
1991 | int rc; | |
1992 | ||
1993 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1994 | if (cmd == NULL) | |
1995 | return -ENOMEM; | |
1996 | ||
1997 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); | |
1998 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1999 | cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); | |
2000 | cmd->rx_antenna_map = rx; | |
2001 | cmd->tx_antenna_map = tx; | |
2002 | ||
2003 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2004 | kfree(cmd); | |
2005 | ||
2006 | return rc; | |
2007 | } | |
2008 | ||
2009 | /* | |
2010 | * CMD_ENABLE_SNIFFER. | |
2011 | */ | |
2012 | struct mwl8k_cmd_enable_sniffer { | |
2013 | struct mwl8k_cmd_pkt header; | |
2014 | __le32 action; | |
2015 | } __attribute__((packed)); | |
2016 | ||
2017 | static int mwl8k_enable_sniffer(struct ieee80211_hw *hw, bool enable) | |
2018 | { | |
2019 | struct mwl8k_cmd_enable_sniffer *cmd; | |
2020 | int rc; | |
2021 | ||
2022 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2023 | if (cmd == NULL) | |
2024 | return -ENOMEM; | |
2025 | ||
2026 | cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); | |
2027 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2028 | cmd->action = enable ? cpu_to_le32((u32)MWL8K_CMD_SET) : 0; | |
2029 | ||
2030 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2031 | kfree(cmd); | |
2032 | ||
2033 | return rc; | |
2034 | } | |
2035 | ||
2036 | /* | |
2037 | * CMD_SET_RATE_ADAPT_MODE. | |
2038 | */ | |
2039 | struct mwl8k_cmd_set_rate_adapt_mode { | |
2040 | struct mwl8k_cmd_pkt header; | |
2041 | __le16 action; | |
2042 | __le16 mode; | |
2043 | } __attribute__((packed)); | |
2044 | ||
2045 | static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw *hw, __u16 mode) | |
2046 | { | |
2047 | struct mwl8k_cmd_set_rate_adapt_mode *cmd; | |
2048 | int rc; | |
2049 | ||
2050 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2051 | if (cmd == NULL) | |
2052 | return -ENOMEM; | |
2053 | ||
2054 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); | |
2055 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2056 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
2057 | cmd->mode = cpu_to_le16(mode); | |
2058 | ||
2059 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2060 | kfree(cmd); | |
2061 | ||
2062 | return rc; | |
2063 | } | |
2064 | ||
2065 | /* | |
2066 | * CMD_SET_WMM_MODE. | |
2067 | */ | |
2068 | struct mwl8k_cmd_set_wmm { | |
2069 | struct mwl8k_cmd_pkt header; | |
2070 | __le16 action; | |
2071 | } __attribute__((packed)); | |
2072 | ||
2073 | static int mwl8k_set_wmm(struct ieee80211_hw *hw, bool enable) | |
2074 | { | |
2075 | struct mwl8k_priv *priv = hw->priv; | |
2076 | struct mwl8k_cmd_set_wmm *cmd; | |
2077 | int rc; | |
2078 | ||
2079 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2080 | if (cmd == NULL) | |
2081 | return -ENOMEM; | |
2082 | ||
2083 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); | |
2084 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2085 | cmd->action = enable ? cpu_to_le16(MWL8K_CMD_SET) : 0; | |
2086 | ||
2087 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2088 | kfree(cmd); | |
2089 | ||
2090 | if (!rc) | |
2091 | priv->wmm_mode = enable; | |
2092 | ||
2093 | return rc; | |
2094 | } | |
2095 | ||
2096 | /* | |
2097 | * CMD_SET_RTS_THRESHOLD. | |
2098 | */ | |
2099 | struct mwl8k_cmd_rts_threshold { | |
2100 | struct mwl8k_cmd_pkt header; | |
2101 | __le16 action; | |
2102 | __le16 threshold; | |
2103 | } __attribute__((packed)); | |
2104 | ||
2105 | static int mwl8k_rts_threshold(struct ieee80211_hw *hw, | |
2106 | u16 action, u16 *threshold) | |
2107 | { | |
2108 | struct mwl8k_cmd_rts_threshold *cmd; | |
2109 | int rc; | |
2110 | ||
2111 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2112 | if (cmd == NULL) | |
2113 | return -ENOMEM; | |
2114 | ||
2115 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); | |
2116 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2117 | cmd->action = cpu_to_le16(action); | |
2118 | cmd->threshold = cpu_to_le16(*threshold); | |
2119 | ||
2120 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2121 | kfree(cmd); | |
2122 | ||
2123 | return rc; | |
2124 | } | |
2125 | ||
2126 | /* | |
2127 | * CMD_SET_EDCA_PARAMS. | |
2128 | */ | |
2129 | struct mwl8k_cmd_set_edca_params { | |
2130 | struct mwl8k_cmd_pkt header; | |
2131 | ||
2132 | /* See MWL8K_SET_EDCA_XXX below */ | |
2133 | __le16 action; | |
2134 | ||
2135 | /* TX opportunity in units of 32 us */ | |
2136 | __le16 txop; | |
2137 | ||
2138 | /* Log exponent of max contention period: 0...15*/ | |
2139 | __u8 log_cw_max; | |
2140 | ||
2141 | /* Log exponent of min contention period: 0...15 */ | |
2142 | __u8 log_cw_min; | |
2143 | ||
2144 | /* Adaptive interframe spacing in units of 32us */ | |
2145 | __u8 aifs; | |
2146 | ||
2147 | /* TX queue to configure */ | |
2148 | __u8 txq; | |
2149 | } __attribute__((packed)); | |
2150 | ||
2151 | #define MWL8K_GET_EDCA_ALL 0 | |
2152 | #define MWL8K_SET_EDCA_CW 0x01 | |
2153 | #define MWL8K_SET_EDCA_TXOP 0x02 | |
2154 | #define MWL8K_SET_EDCA_AIFS 0x04 | |
2155 | ||
2156 | #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ | |
2157 | MWL8K_SET_EDCA_TXOP | \ | |
2158 | MWL8K_SET_EDCA_AIFS) | |
2159 | ||
2160 | static int | |
2161 | mwl8k_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, | |
2162 | __u16 cw_min, __u16 cw_max, | |
2163 | __u8 aifs, __u16 txop) | |
2164 | { | |
2165 | struct mwl8k_cmd_set_edca_params *cmd; | |
2166 | u32 log_cw_min, log_cw_max; | |
2167 | int rc; | |
2168 | ||
2169 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2170 | if (cmd == NULL) | |
2171 | return -ENOMEM; | |
2172 | ||
2173 | log_cw_min = ilog2(cw_min+1); | |
2174 | log_cw_max = ilog2(cw_max+1); | |
2175 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); | |
2176 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2177 | ||
2178 | cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); | |
2179 | cmd->txop = cpu_to_le16(txop); | |
2180 | cmd->log_cw_max = (u8)log_cw_max; | |
2181 | cmd->log_cw_min = (u8)log_cw_min; | |
2182 | cmd->aifs = aifs; | |
2183 | cmd->txq = qnum; | |
2184 | ||
2185 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2186 | kfree(cmd); | |
2187 | ||
2188 | return rc; | |
2189 | } | |
2190 | ||
2191 | /* | |
2192 | * CMD_FINALIZE_JOIN. | |
2193 | */ | |
2194 | ||
2195 | /* FJ beacon buffer size is compiled into the firmware. */ | |
2196 | #define MWL8K_FJ_BEACON_MAXLEN 128 | |
2197 | ||
2198 | struct mwl8k_cmd_finalize_join { | |
2199 | struct mwl8k_cmd_pkt header; | |
2200 | __le32 sleep_interval; /* Number of beacon periods to sleep */ | |
2201 | __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; | |
2202 | } __attribute__((packed)); | |
2203 | ||
2204 | static int mwl8k_finalize_join(struct ieee80211_hw *hw, void *frame, | |
2205 | __u16 framelen, __u16 dtim) | |
2206 | { | |
2207 | struct mwl8k_cmd_finalize_join *cmd; | |
2208 | struct ieee80211_mgmt *payload = frame; | |
2209 | u16 hdrlen; | |
2210 | u32 payload_len; | |
2211 | int rc; | |
2212 | ||
2213 | if (frame == NULL) | |
2214 | return -EINVAL; | |
2215 | ||
2216 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2217 | if (cmd == NULL) | |
2218 | return -ENOMEM; | |
2219 | ||
2220 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); | |
2221 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2222 | ||
2223 | if (dtim) | |
2224 | cmd->sleep_interval = cpu_to_le32(dtim); | |
2225 | else | |
2226 | cmd->sleep_interval = cpu_to_le32(1); | |
2227 | ||
2228 | hdrlen = ieee80211_hdrlen(payload->frame_control); | |
2229 | ||
2230 | payload_len = framelen > hdrlen ? framelen - hdrlen : 0; | |
2231 | ||
2232 | /* XXX TBD Might just have to abort and return an error */ | |
2233 | if (payload_len > MWL8K_FJ_BEACON_MAXLEN) | |
2234 | printk(KERN_ERR "%s(): WARNING: Incomplete beacon " | |
2235 | "sent to firmware. Sz=%u MAX=%u\n", __func__, | |
2236 | payload_len, MWL8K_FJ_BEACON_MAXLEN); | |
2237 | ||
2238 | payload_len = payload_len > MWL8K_FJ_BEACON_MAXLEN ? | |
2239 | MWL8K_FJ_BEACON_MAXLEN : payload_len; | |
2240 | ||
2241 | if (payload && payload_len) | |
2242 | memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); | |
2243 | ||
2244 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2245 | kfree(cmd); | |
2246 | return rc; | |
2247 | } | |
2248 | ||
2249 | /* | |
2250 | * CMD_UPDATE_STADB. | |
2251 | */ | |
2252 | struct mwl8k_cmd_update_sta_db { | |
2253 | struct mwl8k_cmd_pkt header; | |
2254 | ||
2255 | /* See STADB_ACTION_TYPE */ | |
2256 | __le32 action; | |
2257 | ||
2258 | /* Peer MAC address */ | |
2259 | __u8 peer_addr[IEEE80211_ADDR_LEN]; | |
2260 | ||
2261 | __le32 reserved; | |
2262 | ||
2263 | /* Peer info - valid during add/update. */ | |
2264 | struct peer_capability_info peer_info; | |
2265 | } __attribute__((packed)); | |
2266 | ||
2267 | static int mwl8k_cmd_update_sta_db(struct ieee80211_hw *hw, | |
2268 | struct ieee80211_vif *vif, __u32 action) | |
2269 | { | |
2270 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2271 | struct ieee80211_bss_conf *info = &mv_vif->bss_info; | |
2272 | struct mwl8k_cmd_update_sta_db *cmd; | |
2273 | struct peer_capability_info *peer_info; | |
2274 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
2275 | DECLARE_MAC_BUF(mac); | |
2276 | int rc; | |
2277 | __u8 count, *rates; | |
2278 | ||
2279 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2280 | if (cmd == NULL) | |
2281 | return -ENOMEM; | |
2282 | ||
2283 | cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); | |
2284 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2285 | ||
2286 | cmd->action = cpu_to_le32(action); | |
2287 | peer_info = &cmd->peer_info; | |
2288 | memcpy(cmd->peer_addr, mv_vif->bssid, IEEE80211_ADDR_LEN); | |
2289 | ||
2290 | switch (action) { | |
2291 | case MWL8K_STA_DB_ADD_ENTRY: | |
2292 | case MWL8K_STA_DB_MODIFY_ENTRY: | |
2293 | /* Build peer_info block */ | |
2294 | peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; | |
2295 | peer_info->basic_caps = cpu_to_le16(info->assoc_capability); | |
2296 | peer_info->interop = 1; | |
2297 | peer_info->amsdu_enabled = 0; | |
2298 | ||
2299 | rates = peer_info->legacy_rates; | |
2300 | for (count = 0 ; count < mv_vif->legacy_nrates; count++) | |
2301 | rates[count] = bitrates[count].hw_value; | |
2302 | ||
2303 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2304 | if (rc == 0) | |
2305 | mv_vif->peer_id = peer_info->station_id; | |
2306 | ||
2307 | break; | |
2308 | ||
2309 | case MWL8K_STA_DB_DEL_ENTRY: | |
2310 | case MWL8K_STA_DB_FLUSH: | |
2311 | default: | |
2312 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2313 | if (rc == 0) | |
2314 | mv_vif->peer_id = 0; | |
2315 | break; | |
2316 | } | |
2317 | kfree(cmd); | |
2318 | ||
2319 | return rc; | |
2320 | } | |
2321 | ||
2322 | /* | |
2323 | * CMD_SET_AID. | |
2324 | */ | |
2325 | #define IEEE80211_OPMODE_DISABLED 0x00 | |
2326 | #define IEEE80211_OPMODE_NON_MEMBER_PROT_MODE 0x01 | |
2327 | #define IEEE80211_OPMODE_ONE_20MHZ_STA_PROT_MODE 0x02 | |
2328 | #define IEEE80211_OPMODE_HTMIXED_PROT_MODE 0x03 | |
2329 | ||
2330 | #define MWL8K_RATE_INDEX_MAX_ARRAY 14 | |
2331 | ||
2332 | #define MWL8K_FRAME_PROT_DISABLED 0x00 | |
2333 | #define MWL8K_FRAME_PROT_11G 0x07 | |
2334 | #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 | |
2335 | #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 | |
2336 | #define MWL8K_FRAME_PROT_MASK 0x07 | |
2337 | ||
2338 | struct mwl8k_cmd_update_set_aid { | |
2339 | struct mwl8k_cmd_pkt header; | |
2340 | __le16 aid; | |
2341 | ||
2342 | /* AP's MAC address (BSSID) */ | |
2343 | __u8 bssid[IEEE80211_ADDR_LEN]; | |
2344 | __le16 protection_mode; | |
2345 | __u8 supp_rates[MWL8K_RATE_INDEX_MAX_ARRAY]; | |
2346 | } __attribute__((packed)); | |
2347 | ||
2348 | static int mwl8k_cmd_set_aid(struct ieee80211_hw *hw, | |
2349 | struct ieee80211_vif *vif) | |
2350 | { | |
2351 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2352 | struct ieee80211_bss_conf *info = &mv_vif->bss_info; | |
2353 | struct mwl8k_cmd_update_set_aid *cmd; | |
2354 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
2355 | int count; | |
2356 | u16 prot_mode; | |
2357 | int rc; | |
2358 | ||
2359 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2360 | if (cmd == NULL) | |
2361 | return -ENOMEM; | |
2362 | ||
2363 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); | |
2364 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2365 | cmd->aid = cpu_to_le16(info->aid); | |
2366 | ||
2367 | memcpy(cmd->bssid, mv_vif->bssid, IEEE80211_ADDR_LEN); | |
2368 | ||
2369 | prot_mode = MWL8K_FRAME_PROT_DISABLED; | |
2370 | ||
2371 | if (info->use_cts_prot) { | |
2372 | prot_mode = MWL8K_FRAME_PROT_11G; | |
2373 | } else { | |
9ed6bcce | 2374 | switch (info->ht_operation_mode & |
a66098da LB |
2375 | IEEE80211_HT_OP_MODE_PROTECTION) { |
2376 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
2377 | prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; | |
2378 | break; | |
2379 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
2380 | prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; | |
2381 | break; | |
2382 | default: | |
2383 | prot_mode = MWL8K_FRAME_PROT_DISABLED; | |
2384 | break; | |
2385 | } | |
2386 | } | |
2387 | ||
2388 | cmd->protection_mode = cpu_to_le16(prot_mode); | |
2389 | ||
2390 | for (count = 0; count < mv_vif->legacy_nrates; count++) | |
2391 | cmd->supp_rates[count] = bitrates[count].hw_value; | |
2392 | ||
2393 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2394 | kfree(cmd); | |
2395 | ||
2396 | return rc; | |
2397 | } | |
2398 | ||
2399 | /* | |
2400 | * CMD_SET_RATE. | |
2401 | */ | |
2402 | struct mwl8k_cmd_update_rateset { | |
2403 | struct mwl8k_cmd_pkt header; | |
2404 | __u8 legacy_rates[MWL8K_RATE_INDEX_MAX_ARRAY]; | |
2405 | ||
2406 | /* Bitmap for supported MCS codes. */ | |
2407 | __u8 mcs_set[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
2408 | __u8 reserved[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
2409 | } __attribute__((packed)); | |
2410 | ||
2411 | static int mwl8k_update_rateset(struct ieee80211_hw *hw, | |
2412 | struct ieee80211_vif *vif) | |
2413 | { | |
2414 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2415 | struct mwl8k_cmd_update_rateset *cmd; | |
2416 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
2417 | int count; | |
2418 | int rc; | |
2419 | ||
2420 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2421 | if (cmd == NULL) | |
2422 | return -ENOMEM; | |
2423 | ||
2424 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); | |
2425 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2426 | ||
2427 | for (count = 0; count < mv_vif->legacy_nrates; count++) | |
2428 | cmd->legacy_rates[count] = bitrates[count].hw_value; | |
2429 | ||
2430 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2431 | kfree(cmd); | |
2432 | ||
2433 | return rc; | |
2434 | } | |
2435 | ||
2436 | /* | |
2437 | * CMD_USE_FIXED_RATE. | |
2438 | */ | |
2439 | #define MWL8K_RATE_TABLE_SIZE 8 | |
2440 | #define MWL8K_UCAST_RATE 0 | |
2441 | #define MWL8K_MCAST_RATE 1 | |
2442 | #define MWL8K_BCAST_RATE 2 | |
2443 | ||
2444 | #define MWL8K_USE_FIXED_RATE 0x0001 | |
2445 | #define MWL8K_USE_AUTO_RATE 0x0002 | |
2446 | ||
2447 | struct mwl8k_rate_entry { | |
2448 | /* Set to 1 if HT rate, 0 if legacy. */ | |
2449 | __le32 is_ht_rate; | |
2450 | ||
2451 | /* Set to 1 to use retry_count field. */ | |
2452 | __le32 enable_retry; | |
2453 | ||
2454 | /* Specified legacy rate or MCS. */ | |
2455 | __le32 rate; | |
2456 | ||
2457 | /* Number of allowed retries. */ | |
2458 | __le32 retry_count; | |
2459 | } __attribute__((packed)); | |
2460 | ||
2461 | struct mwl8k_rate_table { | |
2462 | /* 1 to allow specified rate and below */ | |
2463 | __le32 allow_rate_drop; | |
2464 | __le32 num_rates; | |
2465 | struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE]; | |
2466 | } __attribute__((packed)); | |
2467 | ||
2468 | struct mwl8k_cmd_use_fixed_rate { | |
2469 | struct mwl8k_cmd_pkt header; | |
2470 | __le32 action; | |
2471 | struct mwl8k_rate_table rate_table; | |
2472 | ||
2473 | /* Unicast, Broadcast or Multicast */ | |
2474 | __le32 rate_type; | |
2475 | __le32 reserved1; | |
2476 | __le32 reserved2; | |
2477 | } __attribute__((packed)); | |
2478 | ||
2479 | static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw, | |
2480 | u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table) | |
2481 | { | |
2482 | struct mwl8k_cmd_use_fixed_rate *cmd; | |
2483 | int count; | |
2484 | int rc; | |
2485 | ||
2486 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2487 | if (cmd == NULL) | |
2488 | return -ENOMEM; | |
2489 | ||
2490 | cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); | |
2491 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2492 | ||
2493 | cmd->action = cpu_to_le32(action); | |
2494 | cmd->rate_type = cpu_to_le32(rate_type); | |
2495 | ||
2496 | if (rate_table != NULL) { | |
2497 | /* Copy over each field manually so | |
2498 | * that bitflipping can be done | |
2499 | */ | |
2500 | cmd->rate_table.allow_rate_drop = | |
2501 | cpu_to_le32(rate_table->allow_rate_drop); | |
2502 | cmd->rate_table.num_rates = | |
2503 | cpu_to_le32(rate_table->num_rates); | |
2504 | ||
2505 | for (count = 0; count < rate_table->num_rates; count++) { | |
2506 | struct mwl8k_rate_entry *dst = | |
2507 | &cmd->rate_table.rate_entry[count]; | |
2508 | struct mwl8k_rate_entry *src = | |
2509 | &rate_table->rate_entry[count]; | |
2510 | ||
2511 | dst->is_ht_rate = cpu_to_le32(src->is_ht_rate); | |
2512 | dst->enable_retry = cpu_to_le32(src->enable_retry); | |
2513 | dst->rate = cpu_to_le32(src->rate); | |
2514 | dst->retry_count = cpu_to_le32(src->retry_count); | |
2515 | } | |
2516 | } | |
2517 | ||
2518 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2519 | kfree(cmd); | |
2520 | ||
2521 | return rc; | |
2522 | } | |
2523 | ||
2524 | ||
2525 | /* | |
2526 | * Interrupt handling. | |
2527 | */ | |
2528 | static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) | |
2529 | { | |
2530 | struct ieee80211_hw *hw = dev_id; | |
2531 | struct mwl8k_priv *priv = hw->priv; | |
2532 | u32 status; | |
2533 | ||
2534 | status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
2535 | iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
2536 | ||
2537 | status &= priv->int_mask; | |
2538 | if (!status) | |
2539 | return IRQ_NONE; | |
2540 | ||
2541 | if (status & MWL8K_A2H_INT_TX_DONE) | |
2542 | tasklet_schedule(&priv->tx_reclaim_task); | |
2543 | ||
2544 | if (status & MWL8K_A2H_INT_RX_READY) { | |
2545 | while (rxq_process(hw, 0, 1)) | |
2546 | rxq_refill(hw, 0, 1); | |
2547 | } | |
2548 | ||
2549 | if (status & MWL8K_A2H_INT_OPC_DONE) { | |
2550 | if (priv->hostcmd_wait != NULL) { | |
2551 | complete(priv->hostcmd_wait); | |
2552 | priv->hostcmd_wait = NULL; | |
2553 | } | |
2554 | } | |
2555 | ||
2556 | if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { | |
2557 | if (!priv->inconfig && | |
2558 | priv->radio_state && | |
2559 | mwl8k_txq_busy(priv)) | |
2560 | mwl8k_tx_start(priv); | |
2561 | } | |
2562 | ||
2563 | return IRQ_HANDLED; | |
2564 | } | |
2565 | ||
2566 | ||
2567 | /* | |
2568 | * Core driver operations. | |
2569 | */ | |
2570 | static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) | |
2571 | { | |
2572 | struct mwl8k_priv *priv = hw->priv; | |
2573 | int index = skb_get_queue_mapping(skb); | |
2574 | int rc; | |
2575 | ||
2576 | if (priv->current_channel == NULL) { | |
2577 | printk(KERN_DEBUG "%s: dropped TX frame since radio " | |
2578 | "disabled\n", priv->name); | |
2579 | dev_kfree_skb(skb); | |
2580 | return NETDEV_TX_OK; | |
2581 | } | |
2582 | ||
2583 | rc = mwl8k_txq_xmit(hw, index, skb); | |
2584 | ||
2585 | return rc; | |
2586 | } | |
2587 | ||
2588 | struct mwl8k_work_struct { | |
2589 | /* Initialized by mwl8k_queue_work(). */ | |
2590 | struct work_struct wt; | |
2591 | ||
2592 | /* Required field passed in to mwl8k_queue_work(). */ | |
2593 | struct ieee80211_hw *hw; | |
2594 | ||
2595 | /* Required field passed in to mwl8k_queue_work(). */ | |
2596 | int (*wfunc)(struct work_struct *w); | |
2597 | ||
2598 | /* Initialized by mwl8k_queue_work(). */ | |
2599 | struct completion *cmd_wait; | |
2600 | ||
2601 | /* Result code. */ | |
2602 | int rc; | |
2603 | ||
2604 | /* | |
2605 | * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX | |
2606 | * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS. | |
2607 | */ | |
2608 | u32 options; | |
2609 | ||
2610 | /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */ | |
2611 | unsigned long timeout_ms; | |
2612 | ||
2613 | /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */ | |
2614 | u32 txwait_attempts; | |
2615 | ||
2616 | /* Optional field. Defaults to MWL8K_TXWAIT_MS. */ | |
2617 | u32 tx_timeout_ms; | |
2618 | u32 step; | |
2619 | }; | |
2620 | ||
2621 | /* Flags controlling behavior of config queue requests */ | |
2622 | ||
2623 | /* Caller spins while waiting for completion. */ | |
2624 | #define MWL8K_WQ_SPIN 0x00000001 | |
2625 | ||
2626 | /* Wait for TX queues to empty before proceeding with configuration. */ | |
2627 | #define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002 | |
2628 | ||
2629 | /* Queue request and return immediately. */ | |
2630 | #define MWL8K_WQ_POST_REQUEST 0x00000004 | |
2631 | ||
2632 | /* | |
2633 | * Caller sleeps and waits for task complete notification. | |
2634 | * Do not use in atomic context. | |
2635 | */ | |
2636 | #define MWL8K_WQ_SLEEP 0x00000008 | |
2637 | ||
2638 | /* Free work struct when task is done. */ | |
2639 | #define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010 | |
2640 | ||
2641 | /* | |
2642 | * Config request is queued and returns to caller imediately. Use | |
2643 | * this in atomic context. Work struct is freed by mwl8k_queue_work() | |
2644 | * when this flag is set. | |
2645 | */ | |
2646 | #define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \ | |
2647 | MWL8K_WQ_FREE_WORKSTRUCT) | |
2648 | ||
2649 | /* Default work queue behavior is to sleep and wait for tx completion. */ | |
2650 | #define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY) | |
2651 | ||
2652 | /* | |
2653 | * Default config request timeout. Add adjustments to make sure the | |
2654 | * config thread waits long enough for both tx wait and cmd wait before | |
2655 | * timing out. | |
2656 | */ | |
2657 | ||
2658 | /* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */ | |
2659 | #define MWL8K_TXWAIT_TIMEOUT_MS 1000 | |
2660 | ||
2661 | /* Default number of TX wait attempts. */ | |
2662 | #define MWL8K_WQ_TXWAIT_ATTEMPTS 4 | |
2663 | ||
2664 | /* Total time to wait for TXQ to drain. */ | |
2665 | #define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \ | |
2666 | MWL8K_WQ_TXWAIT_ATTEMPTS) | |
2667 | ||
2668 | /* Scheduling slop. */ | |
2669 | #define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200 | |
2670 | ||
2671 | #define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \ | |
2672 | MWL8K_TXWAIT_MS + \ | |
2673 | MWL8K_OS_SCHEDULE_OVERHEAD_MS) | |
2674 | ||
2675 | static void mwl8k_config_thread(struct work_struct *wt) | |
2676 | { | |
2677 | struct mwl8k_work_struct *worker = (struct mwl8k_work_struct *)wt; | |
2678 | struct ieee80211_hw *hw = worker->hw; | |
2679 | struct mwl8k_priv *priv = hw->priv; | |
2680 | int rc = 0; | |
2681 | ||
2682 | spin_lock_irq(&priv->tx_lock); | |
2683 | priv->inconfig = true; | |
2684 | spin_unlock_irq(&priv->tx_lock); | |
2685 | ||
2686 | ieee80211_stop_queues(hw); | |
2687 | ||
2688 | /* | |
2689 | * Wait for host queues to drain before doing PHY | |
2690 | * reconfiguration. This avoids interrupting any in-flight | |
2691 | * DMA transfers to the hardware. | |
2692 | */ | |
2693 | if (worker->options & MWL8K_WQ_TX_WAIT_EMPTY) { | |
2694 | u32 timeout; | |
2695 | u32 time_remaining; | |
2696 | u32 iter; | |
2697 | u32 tx_wait_attempts = worker->txwait_attempts; | |
2698 | ||
2699 | time_remaining = worker->tx_timeout_ms; | |
2700 | if (!tx_wait_attempts) | |
2701 | tx_wait_attempts = 1; | |
2702 | ||
2703 | timeout = worker->tx_timeout_ms/tx_wait_attempts; | |
2704 | if (!timeout) | |
2705 | timeout = 1; | |
2706 | ||
2707 | iter = tx_wait_attempts; | |
2708 | do { | |
2709 | int wait_time; | |
2710 | ||
2711 | if (time_remaining > timeout) { | |
2712 | time_remaining -= timeout; | |
2713 | wait_time = timeout; | |
2714 | } else | |
2715 | wait_time = time_remaining; | |
2716 | ||
2717 | if (!wait_time) | |
2718 | wait_time = 1; | |
2719 | ||
2720 | rc = mwl8k_tx_wait_empty(hw, wait_time); | |
2721 | if (rc) | |
2722 | printk(KERN_ERR "%s() txwait timeout=%ums " | |
2723 | "Retry:%u/%u\n", __func__, timeout, | |
2724 | tx_wait_attempts - iter + 1, | |
2725 | tx_wait_attempts); | |
2726 | ||
2727 | } while (rc && --iter); | |
2728 | ||
2729 | rc = iter ? 0 : -ETIMEDOUT; | |
2730 | } | |
2731 | if (!rc) | |
2732 | rc = worker->wfunc(wt); | |
2733 | ||
2734 | spin_lock_irq(&priv->tx_lock); | |
2735 | priv->inconfig = false; | |
2736 | if (priv->pending_tx_pkts && priv->radio_state) | |
2737 | mwl8k_tx_start(priv); | |
2738 | spin_unlock_irq(&priv->tx_lock); | |
2739 | ieee80211_wake_queues(hw); | |
2740 | ||
2741 | worker->rc = rc; | |
2742 | if (worker->options & MWL8K_WQ_SLEEP) | |
2743 | complete(worker->cmd_wait); | |
2744 | ||
2745 | if (worker->options & MWL8K_WQ_FREE_WORKSTRUCT) | |
2746 | kfree(wt); | |
2747 | } | |
2748 | ||
2749 | static int mwl8k_queue_work(struct ieee80211_hw *hw, | |
2750 | struct mwl8k_work_struct *worker, | |
2751 | struct workqueue_struct *wqueue, | |
2752 | int (*wfunc)(struct work_struct *w)) | |
2753 | { | |
2754 | unsigned long timeout = 0; | |
2755 | int rc = 0; | |
2756 | ||
2757 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
2758 | ||
2759 | if (!worker->timeout_ms) | |
2760 | worker->timeout_ms = MWL8K_CONFIG_TIMEOUT_MS; | |
2761 | ||
2762 | if (!worker->options) | |
2763 | worker->options = MWL8K_WQ_DEFAULT_OPTIONS; | |
2764 | ||
2765 | if (!worker->txwait_attempts) | |
2766 | worker->txwait_attempts = MWL8K_WQ_TXWAIT_ATTEMPTS; | |
2767 | ||
2768 | if (!worker->tx_timeout_ms) | |
2769 | worker->tx_timeout_ms = MWL8K_TXWAIT_MS; | |
2770 | ||
2771 | worker->hw = hw; | |
2772 | worker->cmd_wait = &cmd_wait; | |
2773 | worker->rc = 1; | |
2774 | worker->wfunc = wfunc; | |
2775 | ||
2776 | INIT_WORK(&worker->wt, mwl8k_config_thread); | |
2777 | queue_work(wqueue, &worker->wt); | |
2778 | ||
2779 | if (worker->options & MWL8K_WQ_POST_REQUEST) { | |
2780 | rc = 0; | |
2781 | } else { | |
2782 | if (worker->options & MWL8K_WQ_SPIN) { | |
2783 | timeout = worker->timeout_ms; | |
2784 | while (timeout && (worker->rc > 0)) { | |
2785 | mdelay(1); | |
2786 | timeout--; | |
2787 | } | |
2788 | } else if (worker->options & MWL8K_WQ_SLEEP) | |
2789 | timeout = wait_for_completion_timeout(&cmd_wait, | |
2790 | msecs_to_jiffies(worker->timeout_ms)); | |
2791 | ||
2792 | if (timeout) | |
2793 | rc = worker->rc; | |
2794 | else { | |
2795 | cancel_work_sync(&worker->wt); | |
2796 | rc = -ETIMEDOUT; | |
2797 | } | |
2798 | } | |
2799 | ||
2800 | return rc; | |
2801 | } | |
2802 | ||
2803 | struct mwl8k_start_worker { | |
2804 | struct mwl8k_work_struct header; | |
2805 | }; | |
2806 | ||
2807 | static int mwl8k_start_wt(struct work_struct *wt) | |
2808 | { | |
2809 | struct mwl8k_start_worker *worker = (struct mwl8k_start_worker *)wt; | |
2810 | struct ieee80211_hw *hw = worker->header.hw; | |
2811 | struct mwl8k_priv *priv = hw->priv; | |
2812 | int rc = 0; | |
2813 | ||
2814 | if (priv->vif != NULL) { | |
2815 | rc = -EIO; | |
2816 | goto mwl8k_start_exit; | |
2817 | } | |
2818 | ||
2819 | /* Turn on radio */ | |
2820 | if (mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_ENABLE)) { | |
2821 | rc = -EIO; | |
2822 | goto mwl8k_start_exit; | |
2823 | } | |
2824 | ||
2825 | /* Purge TX/RX HW queues */ | |
2826 | if (mwl8k_cmd_set_pre_scan(hw)) { | |
2827 | rc = -EIO; | |
2828 | goto mwl8k_start_exit; | |
2829 | } | |
2830 | ||
2831 | if (mwl8k_cmd_set_post_scan(hw, "\x00\x00\x00\x00\x00\x00")) { | |
2832 | rc = -EIO; | |
2833 | goto mwl8k_start_exit; | |
2834 | } | |
2835 | ||
2836 | /* Enable firmware rate adaptation */ | |
2837 | if (mwl8k_cmd_setrateadaptmode(hw, 0)) { | |
2838 | rc = -EIO; | |
2839 | goto mwl8k_start_exit; | |
2840 | } | |
2841 | ||
2842 | /* Disable WMM. WMM gets enabled when stack sends WMM parms */ | |
2843 | if (mwl8k_set_wmm(hw, MWL8K_WMM_DISABLE)) { | |
2844 | rc = -EIO; | |
2845 | goto mwl8k_start_exit; | |
2846 | } | |
2847 | ||
2848 | /* Disable sniffer mode */ | |
2849 | if (mwl8k_enable_sniffer(hw, 0)) | |
2850 | rc = -EIO; | |
2851 | ||
2852 | mwl8k_start_exit: | |
2853 | return rc; | |
2854 | } | |
2855 | ||
2856 | static int mwl8k_start(struct ieee80211_hw *hw) | |
2857 | { | |
2858 | struct mwl8k_start_worker *worker; | |
2859 | struct mwl8k_priv *priv = hw->priv; | |
2860 | int rc; | |
2861 | ||
2862 | /* Enable tx reclaim tasklet */ | |
2863 | tasklet_enable(&priv->tx_reclaim_task); | |
2864 | ||
2865 | rc = request_irq(priv->pdev->irq, &mwl8k_interrupt, | |
2866 | IRQF_SHARED, MWL8K_NAME, hw); | |
2867 | if (rc) { | |
2868 | printk(KERN_ERR "%s: failed to register IRQ handler\n", | |
2869 | priv->name); | |
2870 | rc = -EIO; | |
2871 | goto mwl8k_start_disable_tasklet; | |
2872 | } | |
2873 | ||
2874 | /* Enable interrupts */ | |
2875 | iowrite32(priv->int_mask, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
2876 | ||
2877 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2878 | if (worker == NULL) { | |
2879 | rc = -ENOMEM; | |
2880 | goto mwl8k_start_disable_irq; | |
2881 | } | |
2882 | ||
2883 | rc = mwl8k_queue_work(hw, &worker->header, | |
2884 | priv->config_wq, mwl8k_start_wt); | |
2885 | kfree(worker); | |
2886 | if (!rc) | |
2887 | return rc; | |
2888 | ||
2889 | if (rc == -ETIMEDOUT) | |
2890 | printk(KERN_ERR "%s() timed out\n", __func__); | |
2891 | ||
2892 | rc = -EIO; | |
2893 | ||
2894 | mwl8k_start_disable_irq: | |
2895 | spin_lock_irq(&priv->tx_lock); | |
2896 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
2897 | spin_unlock_irq(&priv->tx_lock); | |
2898 | free_irq(priv->pdev->irq, hw); | |
2899 | ||
2900 | mwl8k_start_disable_tasklet: | |
2901 | tasklet_disable(&priv->tx_reclaim_task); | |
2902 | ||
2903 | return rc; | |
2904 | } | |
2905 | ||
2906 | struct mwl8k_stop_worker { | |
2907 | struct mwl8k_work_struct header; | |
2908 | }; | |
2909 | ||
2910 | static int mwl8k_stop_wt(struct work_struct *wt) | |
2911 | { | |
2912 | struct mwl8k_stop_worker *worker = (struct mwl8k_stop_worker *)wt; | |
2913 | struct ieee80211_hw *hw = worker->header.hw; | |
2914 | int rc; | |
2915 | ||
2916 | rc = mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE); | |
2917 | ||
2918 | return rc; | |
2919 | } | |
2920 | ||
2921 | static void mwl8k_stop(struct ieee80211_hw *hw) | |
2922 | { | |
2923 | int rc; | |
2924 | struct mwl8k_stop_worker *worker; | |
2925 | struct mwl8k_priv *priv = hw->priv; | |
2926 | int i; | |
2927 | ||
2928 | if (priv->vif != NULL) | |
2929 | return; | |
2930 | ||
2931 | ieee80211_stop_queues(hw); | |
2932 | ||
2933 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2934 | if (worker == NULL) | |
2935 | return; | |
2936 | ||
2937 | rc = mwl8k_queue_work(hw, &worker->header, | |
2938 | priv->config_wq, mwl8k_stop_wt); | |
2939 | kfree(worker); | |
2940 | if (rc == -ETIMEDOUT) | |
2941 | printk(KERN_ERR "%s() timed out\n", __func__); | |
2942 | ||
2943 | /* Disable interrupts */ | |
2944 | spin_lock_irq(&priv->tx_lock); | |
2945 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
2946 | spin_unlock_irq(&priv->tx_lock); | |
2947 | free_irq(priv->pdev->irq, hw); | |
2948 | ||
2949 | /* Stop finalize join worker */ | |
2950 | cancel_work_sync(&priv->finalize_join_worker); | |
2951 | if (priv->beacon_skb != NULL) | |
2952 | dev_kfree_skb(priv->beacon_skb); | |
2953 | ||
2954 | /* Stop tx reclaim tasklet */ | |
2955 | tasklet_disable(&priv->tx_reclaim_task); | |
2956 | ||
2957 | /* Stop config thread */ | |
2958 | flush_workqueue(priv->config_wq); | |
2959 | ||
2960 | /* Return all skbs to mac80211 */ | |
2961 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
2962 | mwl8k_txq_reclaim(hw, i, 1); | |
2963 | } | |
2964 | ||
2965 | static int mwl8k_add_interface(struct ieee80211_hw *hw, | |
2966 | struct ieee80211_if_init_conf *conf) | |
2967 | { | |
2968 | struct mwl8k_priv *priv = hw->priv; | |
2969 | struct mwl8k_vif *mwl8k_vif; | |
2970 | ||
2971 | /* | |
2972 | * We only support one active interface at a time. | |
2973 | */ | |
2974 | if (priv->vif != NULL) | |
2975 | return -EBUSY; | |
2976 | ||
2977 | /* | |
2978 | * We only support managed interfaces for now. | |
2979 | */ | |
2980 | if (conf->type != NL80211_IFTYPE_STATION && | |
2981 | conf->type != NL80211_IFTYPE_MONITOR) | |
2982 | return -EINVAL; | |
2983 | ||
2984 | /* Clean out driver private area */ | |
2985 | mwl8k_vif = MWL8K_VIF(conf->vif); | |
2986 | memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); | |
2987 | ||
2988 | /* Save the mac address */ | |
2989 | memcpy(mwl8k_vif->mac_addr, conf->mac_addr, IEEE80211_ADDR_LEN); | |
2990 | ||
2991 | /* Back pointer to parent config block */ | |
2992 | mwl8k_vif->priv = priv; | |
2993 | ||
2994 | /* Setup initial PHY parameters */ | |
2995 | memcpy(mwl8k_vif->legacy_rates , | |
2996 | priv->rates, sizeof(mwl8k_vif->legacy_rates)); | |
2997 | mwl8k_vif->legacy_nrates = ARRAY_SIZE(priv->rates); | |
2998 | ||
2999 | /* Set Initial sequence number to zero */ | |
3000 | mwl8k_vif->seqno = 0; | |
3001 | ||
3002 | priv->vif = conf->vif; | |
3003 | priv->current_channel = NULL; | |
3004 | ||
3005 | return 0; | |
3006 | } | |
3007 | ||
3008 | static void mwl8k_remove_interface(struct ieee80211_hw *hw, | |
3009 | struct ieee80211_if_init_conf *conf) | |
3010 | { | |
3011 | struct mwl8k_priv *priv = hw->priv; | |
3012 | ||
3013 | if (priv->vif == NULL) | |
3014 | return; | |
3015 | ||
3016 | priv->vif = NULL; | |
3017 | } | |
3018 | ||
3019 | struct mwl8k_config_worker { | |
3020 | struct mwl8k_work_struct header; | |
3021 | u32 changed; | |
3022 | }; | |
3023 | ||
3024 | static int mwl8k_config_wt(struct work_struct *wt) | |
3025 | { | |
3026 | struct mwl8k_config_worker *worker = | |
3027 | (struct mwl8k_config_worker *)wt; | |
3028 | struct ieee80211_hw *hw = worker->header.hw; | |
3029 | struct ieee80211_conf *conf = &hw->conf; | |
3030 | struct mwl8k_priv *priv = hw->priv; | |
3031 | int rc = 0; | |
3032 | ||
3033 | if (!conf->radio_enabled) { | |
3034 | mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE); | |
3035 | priv->current_channel = NULL; | |
3036 | rc = 0; | |
3037 | goto mwl8k_config_exit; | |
3038 | } | |
3039 | ||
3040 | if (mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_ENABLE)) { | |
3041 | rc = -EINVAL; | |
3042 | goto mwl8k_config_exit; | |
3043 | } | |
3044 | ||
3045 | priv->current_channel = conf->channel; | |
3046 | ||
3047 | if (mwl8k_cmd_set_rf_channel(hw, conf->channel)) { | |
3048 | rc = -EINVAL; | |
3049 | goto mwl8k_config_exit; | |
3050 | } | |
3051 | ||
3052 | if (conf->power_level > 18) | |
3053 | conf->power_level = 18; | |
3054 | if (mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level)) { | |
3055 | rc = -EINVAL; | |
3056 | goto mwl8k_config_exit; | |
3057 | } | |
3058 | ||
3059 | if (mwl8k_cmd_mimo_config(hw, 0x7, 0x7)) | |
3060 | rc = -EINVAL; | |
3061 | ||
3062 | mwl8k_config_exit: | |
3063 | return rc; | |
3064 | } | |
3065 | ||
3066 | static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) | |
3067 | { | |
3068 | int rc = 0; | |
3069 | struct mwl8k_config_worker *worker; | |
3070 | struct mwl8k_priv *priv = hw->priv; | |
3071 | ||
3072 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3073 | if (worker == NULL) | |
3074 | return -ENOMEM; | |
3075 | ||
3076 | worker->changed = changed; | |
3077 | rc = mwl8k_queue_work(hw, &worker->header, | |
3078 | priv->config_wq, mwl8k_config_wt); | |
3079 | if (rc == -ETIMEDOUT) { | |
3080 | printk(KERN_ERR "%s() timed out.\n", __func__); | |
3081 | rc = -EINVAL; | |
3082 | } | |
3083 | ||
3084 | kfree(worker); | |
3085 | ||
3086 | /* | |
3087 | * mac80211 will crash on anything other than -EINVAL on | |
3088 | * error. Looks like wireless extensions which calls mac80211 | |
3089 | * may be the actual culprit... | |
3090 | */ | |
3091 | return rc ? -EINVAL : 0; | |
3092 | } | |
3093 | ||
a66098da LB |
3094 | struct mwl8k_bss_info_changed_worker { |
3095 | struct mwl8k_work_struct header; | |
3096 | struct ieee80211_vif *vif; | |
3097 | struct ieee80211_bss_conf *info; | |
3098 | u32 changed; | |
3099 | }; | |
3100 | ||
3101 | static int mwl8k_bss_info_changed_wt(struct work_struct *wt) | |
3102 | { | |
3103 | struct mwl8k_bss_info_changed_worker *worker = | |
3104 | (struct mwl8k_bss_info_changed_worker *)wt; | |
3105 | struct ieee80211_hw *hw = worker->header.hw; | |
3106 | struct ieee80211_vif *vif = worker->vif; | |
3107 | struct ieee80211_bss_conf *info = worker->info; | |
3108 | u32 changed; | |
3109 | int rc; | |
3110 | ||
3111 | struct mwl8k_priv *priv = hw->priv; | |
3112 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
3113 | ||
3114 | changed = worker->changed; | |
3115 | priv->capture_beacon = false; | |
3116 | ||
3117 | if (info->assoc) { | |
3118 | memcpy(&mwl8k_vif->bss_info, info, | |
3119 | sizeof(struct ieee80211_bss_conf)); | |
3120 | ||
3121 | /* Install rates */ | |
3122 | if (mwl8k_update_rateset(hw, vif)) | |
3123 | goto mwl8k_bss_info_changed_exit; | |
3124 | ||
3125 | /* Turn on rate adaptation */ | |
3126 | if (mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE, | |
3127 | MWL8K_UCAST_RATE, NULL)) | |
3128 | goto mwl8k_bss_info_changed_exit; | |
3129 | ||
3130 | /* Set radio preamble */ | |
3131 | if (mwl8k_set_radio_preamble(hw, | |
3132 | info->use_short_preamble)) | |
3133 | goto mwl8k_bss_info_changed_exit; | |
3134 | ||
3135 | /* Set slot time */ | |
3136 | if (mwl8k_cmd_set_slot(hw, info->use_short_slot ? | |
3137 | MWL8K_SHORT_SLOTTIME : MWL8K_LONG_SLOTTIME)) | |
3138 | goto mwl8k_bss_info_changed_exit; | |
3139 | ||
3140 | /* Update peer rate info */ | |
3141 | if (mwl8k_cmd_update_sta_db(hw, vif, | |
3142 | MWL8K_STA_DB_MODIFY_ENTRY)) | |
3143 | goto mwl8k_bss_info_changed_exit; | |
3144 | ||
3145 | /* Set AID */ | |
3146 | if (mwl8k_cmd_set_aid(hw, vif)) | |
3147 | goto mwl8k_bss_info_changed_exit; | |
3148 | ||
3149 | /* | |
3150 | * Finalize the join. Tell rx handler to process | |
3151 | * next beacon from our BSSID. | |
3152 | */ | |
3153 | memcpy(priv->capture_bssid, | |
3154 | mwl8k_vif->bssid, IEEE80211_ADDR_LEN); | |
3155 | priv->capture_beacon = true; | |
3156 | } else { | |
3157 | mwl8k_cmd_update_sta_db(hw, vif, MWL8K_STA_DB_DEL_ENTRY); | |
3158 | memset(&mwl8k_vif->bss_info, 0, | |
3159 | sizeof(struct ieee80211_bss_conf)); | |
3160 | memset(mwl8k_vif->bssid, 0, IEEE80211_ADDR_LEN); | |
3161 | } | |
3162 | ||
3163 | mwl8k_bss_info_changed_exit: | |
3164 | rc = 0; | |
3165 | return rc; | |
3166 | } | |
3167 | ||
3168 | static void mwl8k_bss_info_changed(struct ieee80211_hw *hw, | |
3169 | struct ieee80211_vif *vif, | |
3170 | struct ieee80211_bss_conf *info, | |
3171 | u32 changed) | |
3172 | { | |
3173 | struct mwl8k_bss_info_changed_worker *worker; | |
3174 | struct mwl8k_priv *priv = hw->priv; | |
2d0ddec5 | 3175 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); |
a66098da LB |
3176 | int rc; |
3177 | ||
2d0ddec5 JB |
3178 | if (changed & BSS_CHANGED_BSSID) |
3179 | memcpy(mv_vif->bssid, info->bssid, IEEE80211_ADDR_LEN); | |
3180 | ||
a66098da LB |
3181 | if ((changed & BSS_CHANGED_ASSOC) == 0) |
3182 | return; | |
3183 | ||
3184 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3185 | if (worker == NULL) | |
3186 | return; | |
3187 | ||
3188 | worker->vif = vif; | |
3189 | worker->info = info; | |
3190 | worker->changed = changed; | |
3191 | rc = mwl8k_queue_work(hw, &worker->header, | |
3192 | priv->config_wq, | |
3193 | mwl8k_bss_info_changed_wt); | |
3194 | kfree(worker); | |
3195 | if (rc == -ETIMEDOUT) | |
3196 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3197 | } | |
3198 | ||
3199 | struct mwl8k_configure_filter_worker { | |
3200 | struct mwl8k_work_struct header; | |
3201 | unsigned int changed_flags; | |
3202 | unsigned int *total_flags; | |
3203 | int mc_count; | |
3204 | struct dev_addr_list *mclist; | |
3205 | }; | |
3206 | ||
3207 | #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC | |
3208 | ||
3209 | static int mwl8k_configure_filter_wt(struct work_struct *wt) | |
3210 | { | |
3211 | struct mwl8k_configure_filter_worker *worker = | |
3212 | (struct mwl8k_configure_filter_worker *)wt; | |
3213 | ||
3214 | struct ieee80211_hw *hw = worker->header.hw; | |
3215 | unsigned int changed_flags = worker->changed_flags; | |
3216 | unsigned int *total_flags = worker->total_flags; | |
3217 | int mc_count = worker->mc_count; | |
3218 | struct dev_addr_list *mclist = worker->mclist; | |
3219 | ||
3220 | struct mwl8k_priv *priv = hw->priv; | |
3221 | struct mwl8k_vif *mv_vif; | |
3222 | int rc = 0; | |
3223 | ||
3224 | if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { | |
3225 | if (*total_flags & FIF_BCN_PRBRESP_PROMISC) | |
3226 | rc = mwl8k_cmd_set_pre_scan(hw); | |
3227 | else { | |
3228 | mv_vif = MWL8K_VIF(priv->vif); | |
3229 | rc = mwl8k_cmd_set_post_scan(hw, mv_vif->bssid); | |
3230 | } | |
3231 | } | |
3232 | ||
3233 | if (rc) | |
3234 | goto mwl8k_configure_filter_exit; | |
3235 | if (mc_count) { | |
3236 | mc_count = mc_count < priv->num_mcaddrs ? | |
3237 | mc_count : priv->num_mcaddrs; | |
3238 | rc = mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist); | |
3239 | if (rc) | |
3240 | printk(KERN_ERR | |
3241 | "%s()Error setting multicast addresses\n", | |
3242 | __func__); | |
3243 | } | |
3244 | ||
3245 | mwl8k_configure_filter_exit: | |
3246 | return rc; | |
3247 | } | |
3248 | ||
3249 | static void mwl8k_configure_filter(struct ieee80211_hw *hw, | |
3250 | unsigned int changed_flags, | |
3251 | unsigned int *total_flags, | |
3252 | int mc_count, | |
3253 | struct dev_addr_list *mclist) | |
3254 | { | |
3255 | ||
3256 | struct mwl8k_configure_filter_worker *worker; | |
3257 | struct mwl8k_priv *priv = hw->priv; | |
3258 | ||
3259 | /* Clear unsupported feature flags */ | |
3260 | *total_flags &= MWL8K_SUPPORTED_IF_FLAGS; | |
3261 | ||
3262 | if (!(changed_flags & MWL8K_SUPPORTED_IF_FLAGS) && !mc_count) | |
3263 | return; | |
3264 | ||
3265 | worker = kzalloc(sizeof(*worker), GFP_ATOMIC); | |
3266 | if (worker == NULL) | |
3267 | return; | |
3268 | ||
3269 | worker->header.options = MWL8K_WQ_QUEUE_ONLY | MWL8K_WQ_TX_WAIT_EMPTY; | |
3270 | worker->changed_flags = changed_flags; | |
3271 | worker->total_flags = total_flags; | |
3272 | worker->mc_count = mc_count; | |
3273 | worker->mclist = mclist; | |
3274 | ||
3275 | mwl8k_queue_work(hw, &worker->header, priv->config_wq, | |
3276 | mwl8k_configure_filter_wt); | |
3277 | } | |
3278 | ||
3279 | struct mwl8k_set_rts_threshold_worker { | |
3280 | struct mwl8k_work_struct header; | |
3281 | u32 value; | |
3282 | }; | |
3283 | ||
3284 | static int mwl8k_set_rts_threshold_wt(struct work_struct *wt) | |
3285 | { | |
3286 | struct mwl8k_set_rts_threshold_worker *worker = | |
3287 | (struct mwl8k_set_rts_threshold_worker *)wt; | |
3288 | ||
3289 | struct ieee80211_hw *hw = worker->header.hw; | |
3290 | u16 threshold = (u16)(worker->value); | |
3291 | int rc; | |
3292 | ||
3293 | rc = mwl8k_rts_threshold(hw, MWL8K_CMD_SET, &threshold); | |
3294 | ||
3295 | return rc; | |
3296 | } | |
3297 | ||
3298 | static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
3299 | { | |
3300 | int rc; | |
3301 | struct mwl8k_set_rts_threshold_worker *worker; | |
3302 | struct mwl8k_priv *priv = hw->priv; | |
3303 | ||
3304 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3305 | if (worker == NULL) | |
3306 | return -ENOMEM; | |
3307 | ||
3308 | worker->value = value; | |
3309 | ||
3310 | rc = mwl8k_queue_work(hw, &worker->header, | |
3311 | priv->config_wq, | |
3312 | mwl8k_set_rts_threshold_wt); | |
3313 | kfree(worker); | |
3314 | ||
3315 | if (rc == -ETIMEDOUT) { | |
3316 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3317 | rc = -EINVAL; | |
3318 | } | |
3319 | ||
3320 | return rc; | |
3321 | } | |
3322 | ||
3323 | struct mwl8k_conf_tx_worker { | |
3324 | struct mwl8k_work_struct header; | |
3325 | u16 queue; | |
3326 | const struct ieee80211_tx_queue_params *params; | |
3327 | }; | |
3328 | ||
3329 | static int mwl8k_conf_tx_wt(struct work_struct *wt) | |
3330 | { | |
3331 | struct mwl8k_conf_tx_worker *worker = | |
3332 | (struct mwl8k_conf_tx_worker *)wt; | |
3333 | ||
3334 | struct ieee80211_hw *hw = worker->header.hw; | |
3335 | u16 queue = worker->queue; | |
3336 | const struct ieee80211_tx_queue_params *params = worker->params; | |
3337 | ||
3338 | struct mwl8k_priv *priv = hw->priv; | |
3339 | int rc = 0; | |
3340 | ||
3341 | if (priv->wmm_mode == MWL8K_WMM_DISABLE) | |
3342 | if (mwl8k_set_wmm(hw, MWL8K_WMM_ENABLE)) { | |
3343 | rc = -EINVAL; | |
3344 | goto mwl8k_conf_tx_exit; | |
3345 | } | |
3346 | ||
3347 | if (mwl8k_set_edca_params(hw, GET_TXQ(queue), params->cw_min, | |
3348 | params->cw_max, params->aifs, params->txop)) | |
3349 | rc = -EINVAL; | |
3350 | mwl8k_conf_tx_exit: | |
3351 | return rc; | |
3352 | } | |
3353 | ||
3354 | static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue, | |
3355 | const struct ieee80211_tx_queue_params *params) | |
3356 | { | |
3357 | int rc; | |
3358 | struct mwl8k_conf_tx_worker *worker; | |
3359 | struct mwl8k_priv *priv = hw->priv; | |
3360 | ||
3361 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3362 | if (worker == NULL) | |
3363 | return -ENOMEM; | |
3364 | ||
3365 | worker->queue = queue; | |
3366 | worker->params = params; | |
3367 | rc = mwl8k_queue_work(hw, &worker->header, | |
3368 | priv->config_wq, mwl8k_conf_tx_wt); | |
3369 | kfree(worker); | |
3370 | if (rc == -ETIMEDOUT) { | |
3371 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3372 | rc = -EINVAL; | |
3373 | } | |
3374 | return rc; | |
3375 | } | |
3376 | ||
3377 | static int mwl8k_get_tx_stats(struct ieee80211_hw *hw, | |
3378 | struct ieee80211_tx_queue_stats *stats) | |
3379 | { | |
3380 | struct mwl8k_priv *priv = hw->priv; | |
3381 | struct mwl8k_tx_queue *txq; | |
3382 | int index; | |
3383 | ||
3384 | spin_lock_bh(&priv->tx_lock); | |
3385 | for (index = 0; index < MWL8K_TX_QUEUES; index++) { | |
3386 | txq = priv->txq + index; | |
3387 | memcpy(&stats[index], &txq->tx_stats, | |
3388 | sizeof(struct ieee80211_tx_queue_stats)); | |
3389 | } | |
3390 | spin_unlock_bh(&priv->tx_lock); | |
3391 | return 0; | |
3392 | } | |
3393 | ||
3394 | struct mwl8k_get_stats_worker { | |
3395 | struct mwl8k_work_struct header; | |
3396 | struct ieee80211_low_level_stats *stats; | |
3397 | }; | |
3398 | ||
3399 | static int mwl8k_get_stats_wt(struct work_struct *wt) | |
3400 | { | |
3401 | struct mwl8k_get_stats_worker *worker = | |
3402 | (struct mwl8k_get_stats_worker *)wt; | |
3403 | ||
3404 | return mwl8k_cmd_802_11_get_stat(worker->header.hw, worker->stats); | |
3405 | } | |
3406 | ||
3407 | static int mwl8k_get_stats(struct ieee80211_hw *hw, | |
3408 | struct ieee80211_low_level_stats *stats) | |
3409 | { | |
3410 | int rc; | |
3411 | struct mwl8k_get_stats_worker *worker; | |
3412 | struct mwl8k_priv *priv = hw->priv; | |
3413 | ||
3414 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3415 | if (worker == NULL) | |
3416 | return -ENOMEM; | |
3417 | ||
3418 | worker->stats = stats; | |
3419 | rc = mwl8k_queue_work(hw, &worker->header, | |
3420 | priv->config_wq, mwl8k_get_stats_wt); | |
3421 | ||
3422 | kfree(worker); | |
3423 | if (rc == -ETIMEDOUT) { | |
3424 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3425 | rc = -EINVAL; | |
3426 | } | |
3427 | ||
3428 | return rc; | |
3429 | } | |
3430 | ||
3431 | static const struct ieee80211_ops mwl8k_ops = { | |
3432 | .tx = mwl8k_tx, | |
3433 | .start = mwl8k_start, | |
3434 | .stop = mwl8k_stop, | |
3435 | .add_interface = mwl8k_add_interface, | |
3436 | .remove_interface = mwl8k_remove_interface, | |
3437 | .config = mwl8k_config, | |
a66098da LB |
3438 | .bss_info_changed = mwl8k_bss_info_changed, |
3439 | .configure_filter = mwl8k_configure_filter, | |
3440 | .set_rts_threshold = mwl8k_set_rts_threshold, | |
3441 | .conf_tx = mwl8k_conf_tx, | |
3442 | .get_tx_stats = mwl8k_get_tx_stats, | |
3443 | .get_stats = mwl8k_get_stats, | |
3444 | }; | |
3445 | ||
3446 | static void mwl8k_tx_reclaim_handler(unsigned long data) | |
3447 | { | |
3448 | int i; | |
3449 | struct ieee80211_hw *hw = (struct ieee80211_hw *) data; | |
3450 | struct mwl8k_priv *priv = hw->priv; | |
3451 | ||
3452 | spin_lock_bh(&priv->tx_lock); | |
3453 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3454 | mwl8k_txq_reclaim(hw, i, 0); | |
3455 | ||
3456 | if (priv->tx_wait != NULL) { | |
3457 | int count = mwl8k_txq_busy(priv); | |
3458 | if (count == 0) { | |
3459 | complete(priv->tx_wait); | |
3460 | priv->tx_wait = NULL; | |
3461 | } | |
3462 | } | |
3463 | spin_unlock_bh(&priv->tx_lock); | |
3464 | } | |
3465 | ||
3466 | static void mwl8k_finalize_join_worker(struct work_struct *work) | |
3467 | { | |
3468 | struct mwl8k_priv *priv = | |
3469 | container_of(work, struct mwl8k_priv, finalize_join_worker); | |
3470 | struct sk_buff *skb = priv->beacon_skb; | |
3471 | u8 dtim = (MWL8K_VIF(priv->vif))->bss_info.dtim_period; | |
3472 | ||
3473 | mwl8k_finalize_join(priv->hw, skb->data, skb->len, dtim); | |
3474 | dev_kfree_skb(skb); | |
3475 | ||
3476 | priv->beacon_skb = NULL; | |
3477 | } | |
3478 | ||
3479 | static int __devinit mwl8k_probe(struct pci_dev *pdev, | |
3480 | const struct pci_device_id *id) | |
3481 | { | |
3482 | struct ieee80211_hw *hw; | |
3483 | struct mwl8k_priv *priv; | |
3484 | DECLARE_MAC_BUF(mac); | |
3485 | int rc; | |
3486 | int i; | |
3487 | u8 *fw; | |
3488 | ||
3489 | rc = pci_enable_device(pdev); | |
3490 | if (rc) { | |
3491 | printk(KERN_ERR "%s: Cannot enable new PCI device\n", | |
3492 | MWL8K_NAME); | |
3493 | return rc; | |
3494 | } | |
3495 | ||
3496 | rc = pci_request_regions(pdev, MWL8K_NAME); | |
3497 | if (rc) { | |
3498 | printk(KERN_ERR "%s: Cannot obtain PCI resources\n", | |
3499 | MWL8K_NAME); | |
3500 | return rc; | |
3501 | } | |
3502 | ||
3503 | pci_set_master(pdev); | |
3504 | ||
3505 | hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); | |
3506 | if (hw == NULL) { | |
3507 | printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); | |
3508 | rc = -ENOMEM; | |
3509 | goto err_free_reg; | |
3510 | } | |
3511 | ||
3512 | priv = hw->priv; | |
3513 | priv->hw = hw; | |
3514 | priv->pdev = pdev; | |
3515 | priv->hostcmd_wait = NULL; | |
3516 | priv->tx_wait = NULL; | |
3517 | priv->inconfig = false; | |
3518 | priv->wep_enabled = 0; | |
3519 | priv->wmm_mode = false; | |
3520 | priv->pending_tx_pkts = 0; | |
3521 | strncpy(priv->name, MWL8K_NAME, sizeof(priv->name)); | |
3522 | ||
3523 | spin_lock_init(&priv->fw_lock); | |
3524 | ||
3525 | SET_IEEE80211_DEV(hw, &pdev->dev); | |
3526 | pci_set_drvdata(pdev, hw); | |
3527 | ||
3528 | priv->regs = pci_iomap(pdev, 1, 0x10000); | |
3529 | if (priv->regs == NULL) { | |
3530 | printk(KERN_ERR "%s: Cannot map device memory\n", priv->name); | |
3531 | goto err_iounmap; | |
3532 | } | |
3533 | ||
3534 | memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels)); | |
3535 | priv->band.band = IEEE80211_BAND_2GHZ; | |
3536 | priv->band.channels = priv->channels; | |
3537 | priv->band.n_channels = ARRAY_SIZE(mwl8k_channels); | |
3538 | priv->band.bitrates = priv->rates; | |
3539 | priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates); | |
3540 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; | |
3541 | ||
3542 | BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates)); | |
3543 | memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates)); | |
3544 | ||
3545 | /* | |
3546 | * Extra headroom is the size of the required DMA header | |
3547 | * minus the size of the smallest 802.11 frame (CTS frame). | |
3548 | */ | |
3549 | hw->extra_tx_headroom = | |
3550 | sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); | |
3551 | ||
3552 | hw->channel_change_time = 10; | |
3553 | ||
3554 | hw->queues = MWL8K_TX_QUEUES; | |
3555 | ||
3556 | hw->wiphy->interface_modes = | |
3557 | BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_MONITOR); | |
3558 | ||
3559 | /* Set rssi and noise values to dBm */ | |
3560 | hw->flags |= (IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM); | |
3561 | hw->vif_data_size = sizeof(struct mwl8k_vif); | |
3562 | priv->vif = NULL; | |
3563 | ||
3564 | /* Set default radio state and preamble */ | |
3565 | priv->radio_preamble = MWL8K_RADIO_DEFAULT_PREAMBLE; | |
3566 | priv->radio_state = MWL8K_RADIO_DISABLE; | |
3567 | ||
3568 | /* Finalize join worker */ | |
3569 | INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); | |
3570 | ||
3571 | /* TX reclaim tasklet */ | |
3572 | tasklet_init(&priv->tx_reclaim_task, | |
3573 | mwl8k_tx_reclaim_handler, (unsigned long)hw); | |
3574 | tasklet_disable(&priv->tx_reclaim_task); | |
3575 | ||
3576 | /* Config workthread */ | |
3577 | priv->config_wq = create_singlethread_workqueue("mwl8k_config"); | |
3578 | if (priv->config_wq == NULL) | |
3579 | goto err_iounmap; | |
3580 | ||
3581 | /* Power management cookie */ | |
3582 | priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma); | |
3583 | if (priv->cookie == NULL) | |
3584 | goto err_iounmap; | |
3585 | ||
3586 | rc = mwl8k_rxq_init(hw, 0); | |
3587 | if (rc) | |
3588 | goto err_iounmap; | |
3589 | rxq_refill(hw, 0, INT_MAX); | |
3590 | ||
3591 | spin_lock_init(&priv->tx_lock); | |
3592 | ||
3593 | for (i = 0; i < MWL8K_TX_QUEUES; i++) { | |
3594 | rc = mwl8k_txq_init(hw, i); | |
3595 | if (rc) | |
3596 | goto err_free_queues; | |
3597 | } | |
3598 | ||
3599 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
3600 | priv->int_mask = 0; | |
3601 | iowrite32(priv->int_mask, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
3602 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); | |
3603 | iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); | |
3604 | ||
3605 | rc = request_irq(priv->pdev->irq, &mwl8k_interrupt, | |
3606 | IRQF_SHARED, MWL8K_NAME, hw); | |
3607 | if (rc) { | |
3608 | printk(KERN_ERR "%s: failed to register IRQ handler\n", | |
3609 | priv->name); | |
3610 | goto err_free_queues; | |
3611 | } | |
3612 | ||
3613 | /* Reset firmware and hardware */ | |
3614 | mwl8k_hw_reset(priv); | |
3615 | ||
3616 | /* Ask userland hotplug daemon for the device firmware */ | |
3617 | rc = mwl8k_request_firmware(priv, (u32)id->driver_data); | |
3618 | if (rc) { | |
3619 | printk(KERN_ERR "%s: Firmware files not found\n", priv->name); | |
3620 | goto err_free_irq; | |
3621 | } | |
3622 | ||
3623 | /* Load firmware into hardware */ | |
3624 | rc = mwl8k_load_firmware(priv); | |
3625 | if (rc) { | |
3626 | printk(KERN_ERR "%s: Cannot start firmware\n", priv->name); | |
3627 | goto err_stop_firmware; | |
3628 | } | |
3629 | ||
3630 | /* Reclaim memory once firmware is successfully loaded */ | |
3631 | mwl8k_release_firmware(priv); | |
3632 | ||
3633 | /* | |
3634 | * Temporarily enable interrupts. Initial firmware host | |
3635 | * commands use interrupts and avoids polling. Disable | |
3636 | * interrupts when done. | |
3637 | */ | |
3638 | priv->int_mask |= MWL8K_A2H_EVENTS; | |
3639 | ||
3640 | iowrite32(priv->int_mask, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
3641 | ||
3642 | /* Get config data, mac addrs etc */ | |
3643 | rc = mwl8k_cmd_get_hw_spec(hw); | |
3644 | if (rc) { | |
3645 | printk(KERN_ERR "%s: Cannot initialise firmware\n", priv->name); | |
3646 | goto err_stop_firmware; | |
3647 | } | |
3648 | ||
3649 | /* Turn radio off */ | |
3650 | rc = mwl8k_cmd_802_11_radio_control(hw, MWL8K_RADIO_DISABLE); | |
3651 | if (rc) { | |
3652 | printk(KERN_ERR "%s: Cannot disable\n", priv->name); | |
3653 | goto err_stop_firmware; | |
3654 | } | |
3655 | ||
3656 | /* Disable interrupts */ | |
3657 | spin_lock_irq(&priv->tx_lock); | |
3658 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
3659 | spin_unlock_irq(&priv->tx_lock); | |
3660 | free_irq(priv->pdev->irq, hw); | |
3661 | ||
3662 | rc = ieee80211_register_hw(hw); | |
3663 | if (rc) { | |
3664 | printk(KERN_ERR "%s: Cannot register device\n", priv->name); | |
3665 | goto err_stop_firmware; | |
3666 | } | |
3667 | ||
3668 | fw = (u8 *)&priv->fw_rev; | |
3669 | printk(KERN_INFO "%s: 88W%u %s\n", priv->name, priv->part_num, | |
3670 | MWL8K_DESC); | |
3671 | printk(KERN_INFO "%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n", | |
3672 | priv->name, MWL8K_VERSION, fw[3], fw[2], fw[1], fw[0]); | |
3673 | printk(KERN_INFO "%s: MAC Address: %s\n", priv->name, | |
3674 | print_mac(mac, hw->wiphy->perm_addr)); | |
3675 | ||
3676 | return 0; | |
3677 | ||
3678 | err_stop_firmware: | |
3679 | mwl8k_hw_reset(priv); | |
3680 | mwl8k_release_firmware(priv); | |
3681 | ||
3682 | err_free_irq: | |
3683 | spin_lock_irq(&priv->tx_lock); | |
3684 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
3685 | spin_unlock_irq(&priv->tx_lock); | |
3686 | free_irq(priv->pdev->irq, hw); | |
3687 | ||
3688 | err_free_queues: | |
3689 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3690 | mwl8k_txq_deinit(hw, i); | |
3691 | mwl8k_rxq_deinit(hw, 0); | |
3692 | ||
3693 | err_iounmap: | |
3694 | if (priv->cookie != NULL) | |
3695 | pci_free_consistent(priv->pdev, 4, | |
3696 | priv->cookie, priv->cookie_dma); | |
3697 | ||
3698 | if (priv->regs != NULL) | |
3699 | pci_iounmap(pdev, priv->regs); | |
3700 | ||
3701 | if (priv->config_wq != NULL) | |
3702 | destroy_workqueue(priv->config_wq); | |
3703 | ||
3704 | pci_set_drvdata(pdev, NULL); | |
3705 | ieee80211_free_hw(hw); | |
3706 | ||
3707 | err_free_reg: | |
3708 | pci_release_regions(pdev); | |
3709 | pci_disable_device(pdev); | |
3710 | ||
3711 | return rc; | |
3712 | } | |
3713 | ||
230f7af0 | 3714 | static void __devexit mwl8k_shutdown(struct pci_dev *pdev) |
a66098da LB |
3715 | { |
3716 | printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__); | |
3717 | } | |
3718 | ||
230f7af0 | 3719 | static void __devexit mwl8k_remove(struct pci_dev *pdev) |
a66098da LB |
3720 | { |
3721 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); | |
3722 | struct mwl8k_priv *priv; | |
3723 | int i; | |
3724 | ||
3725 | if (hw == NULL) | |
3726 | return; | |
3727 | priv = hw->priv; | |
3728 | ||
3729 | ieee80211_stop_queues(hw); | |
3730 | ||
3731 | /* Remove tx reclaim tasklet */ | |
3732 | tasklet_kill(&priv->tx_reclaim_task); | |
3733 | ||
3734 | /* Stop config thread */ | |
3735 | destroy_workqueue(priv->config_wq); | |
3736 | ||
3737 | /* Stop hardware */ | |
3738 | mwl8k_hw_reset(priv); | |
3739 | ||
3740 | /* Return all skbs to mac80211 */ | |
3741 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3742 | mwl8k_txq_reclaim(hw, i, 1); | |
3743 | ||
3744 | ieee80211_unregister_hw(hw); | |
3745 | ||
3746 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3747 | mwl8k_txq_deinit(hw, i); | |
3748 | ||
3749 | mwl8k_rxq_deinit(hw, 0); | |
3750 | ||
3751 | pci_free_consistent(priv->pdev, 4, | |
3752 | priv->cookie, priv->cookie_dma); | |
3753 | ||
3754 | pci_iounmap(pdev, priv->regs); | |
3755 | pci_set_drvdata(pdev, NULL); | |
3756 | ieee80211_free_hw(hw); | |
3757 | pci_release_regions(pdev); | |
3758 | pci_disable_device(pdev); | |
3759 | } | |
3760 | ||
3761 | static struct pci_driver mwl8k_driver = { | |
3762 | .name = MWL8K_NAME, | |
3763 | .id_table = mwl8k_table, | |
3764 | .probe = mwl8k_probe, | |
3765 | .remove = __devexit_p(mwl8k_remove), | |
3766 | .shutdown = __devexit_p(mwl8k_shutdown), | |
3767 | }; | |
3768 | ||
3769 | static int __init mwl8k_init(void) | |
3770 | { | |
3771 | return pci_register_driver(&mwl8k_driver); | |
3772 | } | |
3773 | ||
3774 | static void __exit mwl8k_exit(void) | |
3775 | { | |
3776 | pci_unregister_driver(&mwl8k_driver); | |
3777 | } | |
3778 | ||
3779 | module_init(mwl8k_init); | |
3780 | module_exit(mwl8k_exit); |