Commit | Line | Data |
---|---|---|
a66098da | 1 | /* |
ce9e2e1b LB |
2 | * drivers/net/wireless/mwl8k.c |
3 | * Driver for Marvell TOPDOG 802.11 Wireless cards | |
a66098da LB |
4 | * |
5 | * Copyright (C) 2008 Marvell Semiconductor Inc. | |
6 | * | |
7 | * This file is licensed under the terms of the GNU General Public | |
8 | * License version 2. This program is licensed "as is" without any | |
9 | * warranty of any kind, whether express or implied. | |
10 | */ | |
11 | ||
12 | #include <linux/init.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/spinlock.h> | |
16 | #include <linux/list.h> | |
17 | #include <linux/pci.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/completion.h> | |
20 | #include <linux/etherdevice.h> | |
21 | #include <net/mac80211.h> | |
22 | #include <linux/moduleparam.h> | |
23 | #include <linux/firmware.h> | |
24 | #include <linux/workqueue.h> | |
25 | ||
26 | #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver" | |
27 | #define MWL8K_NAME KBUILD_MODNAME | |
28 | #define MWL8K_VERSION "0.9.1" | |
29 | ||
30 | MODULE_DESCRIPTION(MWL8K_DESC); | |
31 | MODULE_VERSION(MWL8K_VERSION); | |
32 | MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>"); | |
33 | MODULE_LICENSE("GPL"); | |
34 | ||
35 | static DEFINE_PCI_DEVICE_TABLE(mwl8k_table) = { | |
36 | { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = 8687, }, | |
37 | { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = 8687, }, | |
38 | { } | |
39 | }; | |
40 | MODULE_DEVICE_TABLE(pci, mwl8k_table); | |
41 | ||
a66098da LB |
42 | /* Register definitions */ |
43 | #define MWL8K_HIU_GEN_PTR 0x00000c10 | |
ce9e2e1b LB |
44 | #define MWL8K_MODE_STA 0x0000005a |
45 | #define MWL8K_MODE_AP 0x000000a5 | |
a66098da | 46 | #define MWL8K_HIU_INT_CODE 0x00000c14 |
ce9e2e1b LB |
47 | #define MWL8K_FWSTA_READY 0xf0f1f2f4 |
48 | #define MWL8K_FWAP_READY 0xf1f2f4a5 | |
49 | #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005 | |
a66098da LB |
50 | #define MWL8K_HIU_SCRATCH 0x00000c40 |
51 | ||
52 | /* Host->device communications */ | |
53 | #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18 | |
54 | #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c | |
55 | #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20 | |
56 | #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24 | |
57 | #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28 | |
ce9e2e1b LB |
58 | #define MWL8K_H2A_INT_DUMMY (1 << 20) |
59 | #define MWL8K_H2A_INT_RESET (1 << 15) | |
60 | #define MWL8K_H2A_INT_DOORBELL (1 << 1) | |
61 | #define MWL8K_H2A_INT_PPA_READY (1 << 0) | |
a66098da LB |
62 | |
63 | /* Device->host communications */ | |
64 | #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c | |
65 | #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30 | |
66 | #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34 | |
67 | #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38 | |
68 | #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c | |
ce9e2e1b LB |
69 | #define MWL8K_A2H_INT_DUMMY (1 << 20) |
70 | #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11) | |
71 | #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10) | |
72 | #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7) | |
73 | #define MWL8K_A2H_INT_RADIO_ON (1 << 6) | |
74 | #define MWL8K_A2H_INT_RADIO_OFF (1 << 5) | |
75 | #define MWL8K_A2H_INT_MAC_EVENT (1 << 3) | |
76 | #define MWL8K_A2H_INT_OPC_DONE (1 << 2) | |
77 | #define MWL8K_A2H_INT_RX_READY (1 << 1) | |
78 | #define MWL8K_A2H_INT_TX_DONE (1 << 0) | |
a66098da LB |
79 | |
80 | #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \ | |
81 | MWL8K_A2H_INT_CHNL_SWITCHED | \ | |
82 | MWL8K_A2H_INT_QUEUE_EMPTY | \ | |
83 | MWL8K_A2H_INT_RADAR_DETECT | \ | |
84 | MWL8K_A2H_INT_RADIO_ON | \ | |
85 | MWL8K_A2H_INT_RADIO_OFF | \ | |
86 | MWL8K_A2H_INT_MAC_EVENT | \ | |
87 | MWL8K_A2H_INT_OPC_DONE | \ | |
88 | MWL8K_A2H_INT_RX_READY | \ | |
89 | MWL8K_A2H_INT_TX_DONE) | |
90 | ||
91 | /* WME stream classes */ | |
92 | #define WME_AC_BE 0 /* best effort */ | |
93 | #define WME_AC_BK 1 /* background */ | |
94 | #define WME_AC_VI 2 /* video */ | |
95 | #define WME_AC_VO 3 /* voice */ | |
96 | ||
97 | #define MWL8K_RX_QUEUES 1 | |
98 | #define MWL8K_TX_QUEUES 4 | |
99 | ||
100 | struct mwl8k_rx_queue { | |
101 | int rx_desc_count; | |
102 | ||
103 | /* hw receives here */ | |
104 | int rx_head; | |
105 | ||
106 | /* refill descs here */ | |
107 | int rx_tail; | |
108 | ||
109 | struct mwl8k_rx_desc *rx_desc_area; | |
110 | dma_addr_t rx_desc_dma; | |
111 | struct sk_buff **rx_skb; | |
112 | }; | |
113 | ||
114 | struct mwl8k_skb { | |
115 | /* | |
116 | * The DMA engine requires a modification to the payload. | |
117 | * If the skbuff is shared/cloned, it needs to be unshared. | |
118 | * This method is used to ensure the stack always gets back | |
119 | * the skbuff it sent for transmission. | |
120 | */ | |
121 | struct sk_buff *clone; | |
122 | struct sk_buff *skb; | |
123 | }; | |
124 | ||
125 | struct mwl8k_tx_queue { | |
126 | /* hw transmits here */ | |
127 | int tx_head; | |
128 | ||
129 | /* sw appends here */ | |
130 | int tx_tail; | |
131 | ||
132 | struct ieee80211_tx_queue_stats tx_stats; | |
133 | struct mwl8k_tx_desc *tx_desc_area; | |
134 | dma_addr_t tx_desc_dma; | |
135 | struct mwl8k_skb *tx_skb; | |
136 | }; | |
137 | ||
138 | /* Pointers to the firmware data and meta information about it. */ | |
139 | struct mwl8k_firmware { | |
140 | /* Microcode */ | |
141 | struct firmware *ucode; | |
142 | ||
143 | /* Boot helper code */ | |
144 | struct firmware *helper; | |
145 | }; | |
146 | ||
147 | struct mwl8k_priv { | |
148 | void __iomem *regs; | |
149 | struct ieee80211_hw *hw; | |
150 | ||
151 | struct pci_dev *pdev; | |
152 | u8 name[16]; | |
153 | /* firmware access lock */ | |
154 | spinlock_t fw_lock; | |
155 | ||
156 | /* firmware files and meta data */ | |
157 | struct mwl8k_firmware fw; | |
158 | u32 part_num; | |
159 | ||
160 | /* lock held over TX and TX reap */ | |
161 | spinlock_t tx_lock; | |
a66098da LB |
162 | |
163 | struct ieee80211_vif *vif; | |
a66098da LB |
164 | |
165 | struct ieee80211_channel *current_channel; | |
166 | ||
167 | /* power management status cookie from firmware */ | |
168 | u32 *cookie; | |
169 | dma_addr_t cookie_dma; | |
170 | ||
171 | u16 num_mcaddrs; | |
a66098da LB |
172 | u8 hw_rev; |
173 | __le32 fw_rev; | |
a66098da LB |
174 | |
175 | /* | |
176 | * Running count of TX packets in flight, to avoid | |
177 | * iterating over the transmit rings each time. | |
178 | */ | |
179 | int pending_tx_pkts; | |
180 | ||
181 | struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES]; | |
182 | struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES]; | |
183 | ||
184 | /* PHY parameters */ | |
185 | struct ieee80211_supported_band band; | |
186 | struct ieee80211_channel channels[14]; | |
187 | struct ieee80211_rate rates[12]; | |
188 | ||
c46563b7 | 189 | bool radio_on; |
68ce3884 | 190 | bool radio_short_preamble; |
a66098da LB |
191 | |
192 | /* WMM MODE 1 for enabled; 0 for disabled */ | |
193 | bool wmm_mode; | |
194 | ||
195 | /* Set if PHY config is in progress */ | |
196 | bool inconfig; | |
197 | ||
198 | /* XXX need to convert this to handle multiple interfaces */ | |
199 | bool capture_beacon; | |
d89173f2 | 200 | u8 capture_bssid[ETH_ALEN]; |
a66098da LB |
201 | struct sk_buff *beacon_skb; |
202 | ||
203 | /* | |
204 | * This FJ worker has to be global as it is scheduled from the | |
205 | * RX handler. At this point we don't know which interface it | |
206 | * belongs to until the list of bssids waiting to complete join | |
207 | * is checked. | |
208 | */ | |
209 | struct work_struct finalize_join_worker; | |
210 | ||
211 | /* Tasklet to reclaim TX descriptors and buffers after tx */ | |
212 | struct tasklet_struct tx_reclaim_task; | |
213 | ||
214 | /* Work thread to serialize configuration requests */ | |
215 | struct workqueue_struct *config_wq; | |
216 | struct completion *hostcmd_wait; | |
217 | struct completion *tx_wait; | |
218 | }; | |
219 | ||
220 | /* Per interface specific private data */ | |
221 | struct mwl8k_vif { | |
a66098da LB |
222 | /* backpointer to parent config block */ |
223 | struct mwl8k_priv *priv; | |
224 | ||
225 | /* BSS config of AP or IBSS from mac80211*/ | |
226 | struct ieee80211_bss_conf bss_info; | |
227 | ||
228 | /* BSSID of AP or IBSS */ | |
d89173f2 LB |
229 | u8 bssid[ETH_ALEN]; |
230 | u8 mac_addr[ETH_ALEN]; | |
a66098da LB |
231 | |
232 | /* | |
233 | * Subset of supported legacy rates. | |
234 | * Intersection of AP and STA supported rates. | |
235 | */ | |
236 | struct ieee80211_rate legacy_rates[12]; | |
237 | ||
238 | /* number of supported legacy rates */ | |
239 | u8 legacy_nrates; | |
240 | ||
a66098da LB |
241 | /* Index into station database.Returned by update_sta_db call */ |
242 | u8 peer_id; | |
243 | ||
244 | /* Non AMPDU sequence number assigned by driver */ | |
245 | u16 seqno; | |
a66098da LB |
246 | }; |
247 | ||
a94cc97e | 248 | #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) |
a66098da LB |
249 | |
250 | static const struct ieee80211_channel mwl8k_channels[] = { | |
251 | { .center_freq = 2412, .hw_value = 1, }, | |
252 | { .center_freq = 2417, .hw_value = 2, }, | |
253 | { .center_freq = 2422, .hw_value = 3, }, | |
254 | { .center_freq = 2427, .hw_value = 4, }, | |
255 | { .center_freq = 2432, .hw_value = 5, }, | |
256 | { .center_freq = 2437, .hw_value = 6, }, | |
257 | { .center_freq = 2442, .hw_value = 7, }, | |
258 | { .center_freq = 2447, .hw_value = 8, }, | |
259 | { .center_freq = 2452, .hw_value = 9, }, | |
260 | { .center_freq = 2457, .hw_value = 10, }, | |
261 | { .center_freq = 2462, .hw_value = 11, }, | |
262 | }; | |
263 | ||
264 | static const struct ieee80211_rate mwl8k_rates[] = { | |
265 | { .bitrate = 10, .hw_value = 2, }, | |
266 | { .bitrate = 20, .hw_value = 4, }, | |
267 | { .bitrate = 55, .hw_value = 11, }, | |
268 | { .bitrate = 60, .hw_value = 12, }, | |
269 | { .bitrate = 90, .hw_value = 18, }, | |
270 | { .bitrate = 110, .hw_value = 22, }, | |
271 | { .bitrate = 120, .hw_value = 24, }, | |
272 | { .bitrate = 180, .hw_value = 36, }, | |
273 | { .bitrate = 240, .hw_value = 48, }, | |
274 | { .bitrate = 360, .hw_value = 72, }, | |
275 | { .bitrate = 480, .hw_value = 96, }, | |
276 | { .bitrate = 540, .hw_value = 108, }, | |
277 | }; | |
278 | ||
a66098da LB |
279 | /* WMM */ |
280 | #define MWL8K_WMM_ENABLE 1 | |
281 | #define MWL8K_WMM_DISABLE 0 | |
282 | ||
a66098da LB |
283 | /* Slot time */ |
284 | ||
285 | /* Short Slot: 9us slot time */ | |
286 | #define MWL8K_SHORT_SLOTTIME 1 | |
287 | ||
288 | /* Long slot: 20us slot time */ | |
289 | #define MWL8K_LONG_SLOTTIME 0 | |
290 | ||
291 | /* Set or get info from Firmware */ | |
292 | #define MWL8K_CMD_SET 0x0001 | |
293 | #define MWL8K_CMD_GET 0x0000 | |
294 | ||
295 | /* Firmware command codes */ | |
296 | #define MWL8K_CMD_CODE_DNLD 0x0001 | |
297 | #define MWL8K_CMD_GET_HW_SPEC 0x0003 | |
298 | #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 | |
299 | #define MWL8K_CMD_GET_STAT 0x0014 | |
ff45fc60 LB |
300 | #define MWL8K_CMD_RADIO_CONTROL 0x001c |
301 | #define MWL8K_CMD_RF_TX_POWER 0x001e | |
a66098da LB |
302 | #define MWL8K_CMD_SET_PRE_SCAN 0x0107 |
303 | #define MWL8K_CMD_SET_POST_SCAN 0x0108 | |
ff45fc60 LB |
304 | #define MWL8K_CMD_SET_RF_CHANNEL 0x010a |
305 | #define MWL8K_CMD_SET_AID 0x010d | |
306 | #define MWL8K_CMD_SET_RATE 0x0110 | |
307 | #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 | |
308 | #define MWL8K_CMD_RTS_THRESHOLD 0x0113 | |
a66098da | 309 | #define MWL8K_CMD_SET_SLOT 0x0114 |
ff45fc60 LB |
310 | #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 |
311 | #define MWL8K_CMD_SET_WMM_MODE 0x0123 | |
a66098da | 312 | #define MWL8K_CMD_MIMO_CONFIG 0x0125 |
ff45fc60 | 313 | #define MWL8K_CMD_USE_FIXED_RATE 0x0126 |
a66098da | 314 | #define MWL8K_CMD_ENABLE_SNIFFER 0x0150 |
a66098da | 315 | #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 |
ff45fc60 | 316 | #define MWL8K_CMD_UPDATE_STADB 0x1123 |
a66098da LB |
317 | |
318 | static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize) | |
319 | { | |
320 | #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ | |
321 | snprintf(buf, bufsize, "%s", #x);\ | |
322 | return buf;\ | |
323 | } while (0) | |
ce9e2e1b | 324 | switch (cmd & ~0x8000) { |
a66098da LB |
325 | MWL8K_CMDNAME(CODE_DNLD); |
326 | MWL8K_CMDNAME(GET_HW_SPEC); | |
327 | MWL8K_CMDNAME(MAC_MULTICAST_ADR); | |
328 | MWL8K_CMDNAME(GET_STAT); | |
329 | MWL8K_CMDNAME(RADIO_CONTROL); | |
330 | MWL8K_CMDNAME(RF_TX_POWER); | |
331 | MWL8K_CMDNAME(SET_PRE_SCAN); | |
332 | MWL8K_CMDNAME(SET_POST_SCAN); | |
333 | MWL8K_CMDNAME(SET_RF_CHANNEL); | |
ff45fc60 LB |
334 | MWL8K_CMDNAME(SET_AID); |
335 | MWL8K_CMDNAME(SET_RATE); | |
336 | MWL8K_CMDNAME(SET_FINALIZE_JOIN); | |
337 | MWL8K_CMDNAME(RTS_THRESHOLD); | |
a66098da | 338 | MWL8K_CMDNAME(SET_SLOT); |
ff45fc60 LB |
339 | MWL8K_CMDNAME(SET_EDCA_PARAMS); |
340 | MWL8K_CMDNAME(SET_WMM_MODE); | |
a66098da | 341 | MWL8K_CMDNAME(MIMO_CONFIG); |
ff45fc60 | 342 | MWL8K_CMDNAME(USE_FIXED_RATE); |
a66098da | 343 | MWL8K_CMDNAME(ENABLE_SNIFFER); |
a66098da | 344 | MWL8K_CMDNAME(SET_RATEADAPT_MODE); |
ff45fc60 | 345 | MWL8K_CMDNAME(UPDATE_STADB); |
a66098da LB |
346 | default: |
347 | snprintf(buf, bufsize, "0x%x", cmd); | |
348 | } | |
349 | #undef MWL8K_CMDNAME | |
350 | ||
351 | return buf; | |
352 | } | |
353 | ||
354 | /* Hardware and firmware reset */ | |
355 | static void mwl8k_hw_reset(struct mwl8k_priv *priv) | |
356 | { | |
357 | iowrite32(MWL8K_H2A_INT_RESET, | |
358 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
359 | iowrite32(MWL8K_H2A_INT_RESET, | |
360 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
361 | msleep(20); | |
362 | } | |
363 | ||
364 | /* Release fw image */ | |
365 | static void mwl8k_release_fw(struct firmware **fw) | |
366 | { | |
367 | if (*fw == NULL) | |
368 | return; | |
369 | release_firmware(*fw); | |
370 | *fw = NULL; | |
371 | } | |
372 | ||
373 | static void mwl8k_release_firmware(struct mwl8k_priv *priv) | |
374 | { | |
375 | mwl8k_release_fw(&priv->fw.ucode); | |
376 | mwl8k_release_fw(&priv->fw.helper); | |
377 | } | |
378 | ||
379 | /* Request fw image */ | |
380 | static int mwl8k_request_fw(struct mwl8k_priv *priv, | |
381 | const char *fname, struct firmware **fw) | |
382 | { | |
383 | /* release current image */ | |
384 | if (*fw != NULL) | |
385 | mwl8k_release_fw(fw); | |
386 | ||
387 | return request_firmware((const struct firmware **)fw, | |
388 | fname, &priv->pdev->dev); | |
389 | } | |
390 | ||
391 | static int mwl8k_request_firmware(struct mwl8k_priv *priv, u32 part_num) | |
392 | { | |
393 | u8 filename[64]; | |
394 | int rc; | |
395 | ||
396 | priv->part_num = part_num; | |
397 | ||
398 | snprintf(filename, sizeof(filename), | |
399 | "mwl8k/helper_%u.fw", priv->part_num); | |
400 | ||
401 | rc = mwl8k_request_fw(priv, filename, &priv->fw.helper); | |
402 | if (rc) { | |
403 | printk(KERN_ERR | |
404 | "%s Error requesting helper firmware file %s\n", | |
405 | pci_name(priv->pdev), filename); | |
406 | return rc; | |
407 | } | |
408 | ||
409 | snprintf(filename, sizeof(filename), | |
410 | "mwl8k/fmimage_%u.fw", priv->part_num); | |
411 | ||
412 | rc = mwl8k_request_fw(priv, filename, &priv->fw.ucode); | |
413 | if (rc) { | |
414 | printk(KERN_ERR "%s Error requesting firmware file %s\n", | |
415 | pci_name(priv->pdev), filename); | |
416 | mwl8k_release_fw(&priv->fw.helper); | |
417 | return rc; | |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | struct mwl8k_cmd_pkt { | |
424 | __le16 code; | |
425 | __le16 length; | |
426 | __le16 seq_num; | |
427 | __le16 result; | |
428 | char payload[0]; | |
429 | } __attribute__((packed)); | |
430 | ||
431 | /* | |
432 | * Firmware loading. | |
433 | */ | |
434 | static int | |
435 | mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) | |
436 | { | |
437 | void __iomem *regs = priv->regs; | |
438 | dma_addr_t dma_addr; | |
439 | int rc; | |
440 | int loops; | |
441 | ||
442 | dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE); | |
443 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
444 | return -ENOMEM; | |
445 | ||
446 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
447 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
448 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
449 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
450 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
451 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
452 | ||
453 | rc = -ETIMEDOUT; | |
454 | loops = 1000; | |
455 | do { | |
456 | u32 int_code; | |
457 | ||
458 | int_code = ioread32(regs + MWL8K_HIU_INT_CODE); | |
459 | if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { | |
460 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
461 | rc = 0; | |
462 | break; | |
463 | } | |
464 | ||
465 | udelay(1); | |
466 | } while (--loops); | |
467 | ||
468 | pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE); | |
469 | ||
470 | /* | |
471 | * Clear 'command done' interrupt bit. | |
472 | */ | |
473 | loops = 1000; | |
474 | do { | |
475 | u32 status; | |
476 | ||
477 | status = ioread32(priv->regs + | |
478 | MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
479 | if (status & MWL8K_A2H_INT_OPC_DONE) { | |
480 | iowrite32(~MWL8K_A2H_INT_OPC_DONE, | |
481 | priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
482 | ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
483 | break; | |
484 | } | |
485 | ||
486 | udelay(1); | |
487 | } while (--loops); | |
488 | ||
489 | return rc; | |
490 | } | |
491 | ||
492 | static int mwl8k_load_fw_image(struct mwl8k_priv *priv, | |
493 | const u8 *data, size_t length) | |
494 | { | |
495 | struct mwl8k_cmd_pkt *cmd; | |
496 | int done; | |
497 | int rc = 0; | |
498 | ||
499 | cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); | |
500 | if (cmd == NULL) | |
501 | return -ENOMEM; | |
502 | ||
503 | cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); | |
504 | cmd->seq_num = 0; | |
505 | cmd->result = 0; | |
506 | ||
507 | done = 0; | |
508 | while (length) { | |
509 | int block_size = length > 256 ? 256 : length; | |
510 | ||
511 | memcpy(cmd->payload, data + done, block_size); | |
512 | cmd->length = cpu_to_le16(block_size); | |
513 | ||
514 | rc = mwl8k_send_fw_load_cmd(priv, cmd, | |
515 | sizeof(*cmd) + block_size); | |
516 | if (rc) | |
517 | break; | |
518 | ||
519 | done += block_size; | |
520 | length -= block_size; | |
521 | } | |
522 | ||
523 | if (!rc) { | |
524 | cmd->length = 0; | |
525 | rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); | |
526 | } | |
527 | ||
528 | kfree(cmd); | |
529 | ||
530 | return rc; | |
531 | } | |
532 | ||
533 | static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, | |
534 | const u8 *data, size_t length) | |
535 | { | |
536 | unsigned char *buffer; | |
537 | int may_continue, rc = 0; | |
538 | u32 done, prev_block_size; | |
539 | ||
540 | buffer = kmalloc(1024, GFP_KERNEL); | |
541 | if (buffer == NULL) | |
542 | return -ENOMEM; | |
543 | ||
544 | done = 0; | |
545 | prev_block_size = 0; | |
546 | may_continue = 1000; | |
547 | while (may_continue > 0) { | |
548 | u32 block_size; | |
549 | ||
550 | block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); | |
551 | if (block_size & 1) { | |
552 | block_size &= ~1; | |
553 | may_continue--; | |
554 | } else { | |
555 | done += prev_block_size; | |
556 | length -= prev_block_size; | |
557 | } | |
558 | ||
559 | if (block_size > 1024 || block_size > length) { | |
560 | rc = -EOVERFLOW; | |
561 | break; | |
562 | } | |
563 | ||
564 | if (length == 0) { | |
565 | rc = 0; | |
566 | break; | |
567 | } | |
568 | ||
569 | if (block_size == 0) { | |
570 | rc = -EPROTO; | |
571 | may_continue--; | |
572 | udelay(1); | |
573 | continue; | |
574 | } | |
575 | ||
576 | prev_block_size = block_size; | |
577 | memcpy(buffer, data + done, block_size); | |
578 | ||
579 | rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); | |
580 | if (rc) | |
581 | break; | |
582 | } | |
583 | ||
584 | if (!rc && length != 0) | |
585 | rc = -EREMOTEIO; | |
586 | ||
587 | kfree(buffer); | |
588 | ||
589 | return rc; | |
590 | } | |
591 | ||
592 | static int mwl8k_load_firmware(struct mwl8k_priv *priv) | |
593 | { | |
594 | int loops, rc; | |
595 | ||
596 | const u8 *ucode = priv->fw.ucode->data; | |
597 | size_t ucode_len = priv->fw.ucode->size; | |
598 | const u8 *helper = priv->fw.helper->data; | |
599 | size_t helper_len = priv->fw.helper->size; | |
600 | ||
601 | if (!memcmp(ucode, "\x01\x00\x00\x00", 4)) { | |
602 | rc = mwl8k_load_fw_image(priv, helper, helper_len); | |
603 | if (rc) { | |
604 | printk(KERN_ERR "%s: unable to load firmware " | |
605 | "helper image\n", pci_name(priv->pdev)); | |
606 | return rc; | |
607 | } | |
608 | msleep(1); | |
609 | ||
610 | rc = mwl8k_feed_fw_image(priv, ucode, ucode_len); | |
611 | } else { | |
612 | rc = mwl8k_load_fw_image(priv, ucode, ucode_len); | |
613 | } | |
614 | ||
615 | if (rc) { | |
616 | printk(KERN_ERR "%s: unable to load firmware data\n", | |
617 | pci_name(priv->pdev)); | |
618 | return rc; | |
619 | } | |
620 | ||
621 | iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); | |
622 | msleep(1); | |
623 | ||
624 | loops = 200000; | |
625 | do { | |
626 | if (ioread32(priv->regs + MWL8K_HIU_INT_CODE) | |
627 | == MWL8K_FWSTA_READY) | |
628 | break; | |
629 | udelay(1); | |
630 | } while (--loops); | |
631 | ||
632 | return loops ? 0 : -ETIMEDOUT; | |
633 | } | |
634 | ||
635 | ||
636 | /* | |
637 | * Defines shared between transmission and reception. | |
638 | */ | |
639 | /* HT control fields for firmware */ | |
640 | struct ewc_ht_info { | |
641 | __le16 control1; | |
642 | __le16 control2; | |
643 | __le16 control3; | |
644 | } __attribute__((packed)); | |
645 | ||
646 | /* Firmware Station database operations */ | |
647 | #define MWL8K_STA_DB_ADD_ENTRY 0 | |
648 | #define MWL8K_STA_DB_MODIFY_ENTRY 1 | |
649 | #define MWL8K_STA_DB_DEL_ENTRY 2 | |
650 | #define MWL8K_STA_DB_FLUSH 3 | |
651 | ||
652 | /* Peer Entry flags - used to define the type of the peer node */ | |
653 | #define MWL8K_PEER_TYPE_ACCESSPOINT 2 | |
a66098da LB |
654 | |
655 | #define MWL8K_IEEE_LEGACY_DATA_RATES 12 | |
656 | #define MWL8K_MCS_BITMAP_SIZE 16 | |
a66098da LB |
657 | |
658 | struct peer_capability_info { | |
659 | /* Peer type - AP vs. STA. */ | |
660 | __u8 peer_type; | |
661 | ||
662 | /* Basic 802.11 capabilities from assoc resp. */ | |
663 | __le16 basic_caps; | |
664 | ||
665 | /* Set if peer supports 802.11n high throughput (HT). */ | |
666 | __u8 ht_support; | |
667 | ||
668 | /* Valid if HT is supported. */ | |
669 | __le16 ht_caps; | |
670 | __u8 extended_ht_caps; | |
671 | struct ewc_ht_info ewc_info; | |
672 | ||
673 | /* Legacy rate table. Intersection of our rates and peer rates. */ | |
674 | __u8 legacy_rates[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
675 | ||
676 | /* HT rate table. Intersection of our rates and peer rates. */ | |
677 | __u8 ht_rates[MWL8K_MCS_BITMAP_SIZE]; | |
c23b5a69 | 678 | __u8 pad[16]; |
a66098da LB |
679 | |
680 | /* If set, interoperability mode, no proprietary extensions. */ | |
681 | __u8 interop; | |
682 | __u8 pad2; | |
683 | __u8 station_id; | |
684 | __le16 amsdu_enabled; | |
685 | } __attribute__((packed)); | |
686 | ||
687 | /* Inline functions to manipulate QoS field in data descriptor. */ | |
a66098da LB |
688 | static inline u16 mwl8k_qos_setbit_eosp(u16 qos) |
689 | { | |
690 | u16 val_mask = 1 << 4; | |
691 | ||
692 | /* End of Service Period Bit 4 */ | |
693 | return qos | val_mask; | |
694 | } | |
695 | ||
696 | static inline u16 mwl8k_qos_setbit_ack(u16 qos, u8 ack_policy) | |
697 | { | |
698 | u16 val_mask = 0x3; | |
699 | u8 shift = 5; | |
700 | u16 qos_mask = ~(val_mask << shift); | |
701 | ||
702 | /* Ack Policy Bit 5-6 */ | |
703 | return (qos & qos_mask) | ((ack_policy & val_mask) << shift); | |
704 | } | |
705 | ||
706 | static inline u16 mwl8k_qos_setbit_amsdu(u16 qos) | |
707 | { | |
708 | u16 val_mask = 1 << 7; | |
709 | ||
710 | /* AMSDU present Bit 7 */ | |
711 | return qos | val_mask; | |
712 | } | |
713 | ||
714 | static inline u16 mwl8k_qos_setbit_qlen(u16 qos, u8 len) | |
715 | { | |
716 | u16 val_mask = 0xff; | |
717 | u8 shift = 8; | |
718 | u16 qos_mask = ~(val_mask << shift); | |
719 | ||
720 | /* Queue Length Bits 8-15 */ | |
721 | return (qos & qos_mask) | ((len & val_mask) << shift); | |
722 | } | |
723 | ||
724 | /* DMA header used by firmware and hardware. */ | |
725 | struct mwl8k_dma_data { | |
726 | __le16 fwlen; | |
727 | struct ieee80211_hdr wh; | |
728 | } __attribute__((packed)); | |
729 | ||
730 | /* Routines to add/remove DMA header from skb. */ | |
731 | static inline int mwl8k_remove_dma_header(struct sk_buff *skb) | |
732 | { | |
733 | struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)(skb->data); | |
734 | void *dst, *src = &tr->wh; | |
735 | __le16 fc = tr->wh.frame_control; | |
736 | int hdrlen = ieee80211_hdrlen(fc); | |
737 | u16 space = sizeof(struct mwl8k_dma_data) - hdrlen; | |
738 | ||
739 | dst = (void *)tr + space; | |
740 | if (dst != src) { | |
741 | memmove(dst, src, hdrlen); | |
742 | skb_pull(skb, space); | |
743 | } | |
744 | ||
745 | return 0; | |
746 | } | |
747 | ||
748 | static inline struct sk_buff *mwl8k_add_dma_header(struct sk_buff *skb) | |
749 | { | |
750 | struct ieee80211_hdr *wh; | |
751 | u32 hdrlen, pktlen; | |
752 | struct mwl8k_dma_data *tr; | |
753 | ||
754 | wh = (struct ieee80211_hdr *)skb->data; | |
755 | hdrlen = ieee80211_hdrlen(wh->frame_control); | |
756 | pktlen = skb->len; | |
757 | ||
758 | /* | |
759 | * Copy up/down the 802.11 header; the firmware requires | |
760 | * we present a 2-byte payload length followed by a | |
761 | * 4-address header (w/o QoS), followed (optionally) by | |
762 | * any WEP/ExtIV header (but only filled in for CCMP). | |
763 | */ | |
764 | if (hdrlen != sizeof(struct mwl8k_dma_data)) | |
765 | skb_push(skb, sizeof(struct mwl8k_dma_data) - hdrlen); | |
766 | ||
767 | tr = (struct mwl8k_dma_data *)skb->data; | |
768 | if (wh != &tr->wh) | |
769 | memmove(&tr->wh, wh, hdrlen); | |
770 | ||
771 | /* Clear addr4 */ | |
d89173f2 | 772 | memset(tr->wh.addr4, 0, ETH_ALEN); |
a66098da LB |
773 | |
774 | /* | |
775 | * Firmware length is the length of the fully formed "802.11 | |
776 | * payload". That is, everything except for the 802.11 header. | |
777 | * This includes all crypto material including the MIC. | |
778 | */ | |
779 | tr->fwlen = cpu_to_le16(pktlen - hdrlen); | |
780 | ||
781 | return skb; | |
782 | } | |
783 | ||
784 | ||
785 | /* | |
786 | * Packet reception. | |
787 | */ | |
a66098da | 788 | #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02 |
a66098da LB |
789 | |
790 | struct mwl8k_rx_desc { | |
791 | __le16 pkt_len; | |
792 | __u8 link_quality; | |
793 | __u8 noise_level; | |
794 | __le32 pkt_phys_addr; | |
795 | __le32 next_rx_desc_phys_addr; | |
796 | __le16 qos_control; | |
797 | __le16 rate_info; | |
798 | __le32 pad0[4]; | |
799 | __u8 rssi; | |
800 | __u8 channel; | |
801 | __le16 pad1; | |
802 | __u8 rx_ctrl; | |
803 | __u8 rx_status; | |
804 | __u8 pad2[2]; | |
805 | } __attribute__((packed)); | |
806 | ||
807 | #define MWL8K_RX_DESCS 256 | |
808 | #define MWL8K_RX_MAXSZ 3800 | |
809 | ||
810 | static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) | |
811 | { | |
812 | struct mwl8k_priv *priv = hw->priv; | |
813 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
814 | int size; | |
815 | int i; | |
816 | ||
817 | rxq->rx_desc_count = 0; | |
818 | rxq->rx_head = 0; | |
819 | rxq->rx_tail = 0; | |
820 | ||
821 | size = MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc); | |
822 | ||
823 | rxq->rx_desc_area = | |
824 | pci_alloc_consistent(priv->pdev, size, &rxq->rx_desc_dma); | |
825 | if (rxq->rx_desc_area == NULL) { | |
826 | printk(KERN_ERR "%s: failed to alloc RX descriptors\n", | |
827 | priv->name); | |
828 | return -ENOMEM; | |
829 | } | |
830 | memset(rxq->rx_desc_area, 0, size); | |
831 | ||
832 | rxq->rx_skb = kmalloc(MWL8K_RX_DESCS * | |
833 | sizeof(*rxq->rx_skb), GFP_KERNEL); | |
834 | if (rxq->rx_skb == NULL) { | |
835 | printk(KERN_ERR "%s: failed to alloc RX skbuff list\n", | |
836 | priv->name); | |
837 | pci_free_consistent(priv->pdev, size, | |
838 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
839 | return -ENOMEM; | |
840 | } | |
841 | memset(rxq->rx_skb, 0, MWL8K_RX_DESCS * sizeof(*rxq->rx_skb)); | |
842 | ||
843 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
844 | struct mwl8k_rx_desc *rx_desc; | |
845 | int nexti; | |
846 | ||
847 | rx_desc = rxq->rx_desc_area + i; | |
848 | nexti = (i + 1) % MWL8K_RX_DESCS; | |
849 | ||
850 | rx_desc->next_rx_desc_phys_addr = | |
851 | cpu_to_le32(rxq->rx_desc_dma | |
852 | + nexti * sizeof(*rx_desc)); | |
c491bf12 | 853 | rx_desc->rx_ctrl = MWL8K_RX_CTRL_OWNED_BY_HOST; |
a66098da LB |
854 | } |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) | |
860 | { | |
861 | struct mwl8k_priv *priv = hw->priv; | |
862 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
863 | int refilled; | |
864 | ||
865 | refilled = 0; | |
866 | while (rxq->rx_desc_count < MWL8K_RX_DESCS && limit--) { | |
867 | struct sk_buff *skb; | |
868 | int rx; | |
869 | ||
870 | skb = dev_alloc_skb(MWL8K_RX_MAXSZ); | |
871 | if (skb == NULL) | |
872 | break; | |
873 | ||
874 | rxq->rx_desc_count++; | |
875 | ||
876 | rx = rxq->rx_tail; | |
877 | rxq->rx_tail = (rx + 1) % MWL8K_RX_DESCS; | |
878 | ||
879 | rxq->rx_desc_area[rx].pkt_phys_addr = | |
880 | cpu_to_le32(pci_map_single(priv->pdev, skb->data, | |
881 | MWL8K_RX_MAXSZ, DMA_FROM_DEVICE)); | |
882 | ||
883 | rxq->rx_desc_area[rx].pkt_len = cpu_to_le16(MWL8K_RX_MAXSZ); | |
884 | rxq->rx_skb[rx] = skb; | |
885 | wmb(); | |
886 | rxq->rx_desc_area[rx].rx_ctrl = 0; | |
887 | ||
888 | refilled++; | |
889 | } | |
890 | ||
891 | return refilled; | |
892 | } | |
893 | ||
894 | /* Must be called only when the card's reception is completely halted */ | |
895 | static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) | |
896 | { | |
897 | struct mwl8k_priv *priv = hw->priv; | |
898 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
899 | int i; | |
900 | ||
901 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
902 | if (rxq->rx_skb[i] != NULL) { | |
903 | unsigned long addr; | |
904 | ||
905 | addr = le32_to_cpu(rxq->rx_desc_area[i].pkt_phys_addr); | |
906 | pci_unmap_single(priv->pdev, addr, MWL8K_RX_MAXSZ, | |
907 | PCI_DMA_FROMDEVICE); | |
908 | kfree_skb(rxq->rx_skb[i]); | |
909 | rxq->rx_skb[i] = NULL; | |
910 | } | |
911 | } | |
912 | ||
913 | kfree(rxq->rx_skb); | |
914 | rxq->rx_skb = NULL; | |
915 | ||
916 | pci_free_consistent(priv->pdev, | |
917 | MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc), | |
918 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
919 | rxq->rx_desc_area = NULL; | |
920 | } | |
921 | ||
922 | ||
923 | /* | |
924 | * Scan a list of BSSIDs to process for finalize join. | |
925 | * Allows for extension to process multiple BSSIDs. | |
926 | */ | |
927 | static inline int | |
928 | mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) | |
929 | { | |
930 | return priv->capture_beacon && | |
931 | ieee80211_is_beacon(wh->frame_control) && | |
932 | !compare_ether_addr(wh->addr3, priv->capture_bssid); | |
933 | } | |
934 | ||
935 | static inline void mwl8k_save_beacon(struct mwl8k_priv *priv, | |
936 | struct sk_buff *skb) | |
937 | { | |
938 | priv->capture_beacon = false; | |
d89173f2 | 939 | memset(priv->capture_bssid, 0, ETH_ALEN); |
a66098da LB |
940 | |
941 | /* | |
942 | * Use GFP_ATOMIC as rxq_process is called from | |
943 | * the primary interrupt handler, memory allocation call | |
944 | * must not sleep. | |
945 | */ | |
946 | priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); | |
947 | if (priv->beacon_skb != NULL) | |
948 | queue_work(priv->config_wq, | |
949 | &priv->finalize_join_worker); | |
950 | } | |
951 | ||
952 | static int rxq_process(struct ieee80211_hw *hw, int index, int limit) | |
953 | { | |
954 | struct mwl8k_priv *priv = hw->priv; | |
955 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
956 | int processed; | |
957 | ||
958 | processed = 0; | |
959 | while (rxq->rx_desc_count && limit--) { | |
960 | struct mwl8k_rx_desc *rx_desc; | |
961 | struct sk_buff *skb; | |
962 | struct ieee80211_rx_status status; | |
963 | unsigned long addr; | |
964 | struct ieee80211_hdr *wh; | |
965 | ||
966 | rx_desc = rxq->rx_desc_area + rxq->rx_head; | |
967 | if (!(rx_desc->rx_ctrl & MWL8K_RX_CTRL_OWNED_BY_HOST)) | |
968 | break; | |
969 | rmb(); | |
970 | ||
971 | skb = rxq->rx_skb[rxq->rx_head]; | |
d25f9f13 LB |
972 | if (skb == NULL) |
973 | break; | |
a66098da LB |
974 | rxq->rx_skb[rxq->rx_head] = NULL; |
975 | ||
976 | rxq->rx_head = (rxq->rx_head + 1) % MWL8K_RX_DESCS; | |
977 | rxq->rx_desc_count--; | |
978 | ||
979 | addr = le32_to_cpu(rx_desc->pkt_phys_addr); | |
980 | pci_unmap_single(priv->pdev, addr, | |
981 | MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); | |
982 | ||
983 | skb_put(skb, le16_to_cpu(rx_desc->pkt_len)); | |
984 | if (mwl8k_remove_dma_header(skb)) { | |
985 | dev_kfree_skb(skb); | |
986 | continue; | |
987 | } | |
988 | ||
989 | wh = (struct ieee80211_hdr *)skb->data; | |
990 | ||
991 | /* | |
992 | * Check for pending join operation. save a copy of | |
993 | * the beacon and schedule a tasklet to send finalize | |
994 | * join command to the firmware. | |
995 | */ | |
996 | if (mwl8k_capture_bssid(priv, wh)) | |
997 | mwl8k_save_beacon(priv, skb); | |
998 | ||
999 | memset(&status, 0, sizeof(status)); | |
1000 | status.mactime = 0; | |
1001 | status.signal = -rx_desc->rssi; | |
1002 | status.noise = -rx_desc->noise_level; | |
1003 | status.qual = rx_desc->link_quality; | |
1004 | status.antenna = 1; | |
1005 | status.rate_idx = 1; | |
1006 | status.flag = 0; | |
1007 | status.band = IEEE80211_BAND_2GHZ; | |
1008 | status.freq = ieee80211_channel_to_frequency(rx_desc->channel); | |
f1d58c25 JB |
1009 | memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); |
1010 | ieee80211_rx_irqsafe(hw, skb); | |
a66098da LB |
1011 | |
1012 | processed++; | |
1013 | } | |
1014 | ||
1015 | return processed; | |
1016 | } | |
1017 | ||
1018 | ||
1019 | /* | |
1020 | * Packet transmission. | |
1021 | */ | |
1022 | ||
1023 | /* Transmit queue assignment. */ | |
1024 | enum { | |
1025 | MWL8K_WME_AC_BK = 0, /* background access */ | |
1026 | MWL8K_WME_AC_BE = 1, /* best effort access */ | |
1027 | MWL8K_WME_AC_VI = 2, /* video access */ | |
1028 | MWL8K_WME_AC_VO = 3, /* voice access */ | |
1029 | }; | |
1030 | ||
1031 | /* Transmit packet ACK policy */ | |
1032 | #define MWL8K_TXD_ACK_POLICY_NORMAL 0 | |
a66098da LB |
1033 | #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3 |
1034 | ||
1035 | #define GET_TXQ(_ac) (\ | |
1036 | ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \ | |
1037 | ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \ | |
1038 | ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \ | |
1039 | MWL8K_WME_AC_BE) | |
1040 | ||
a66098da LB |
1041 | #define MWL8K_TXD_STATUS_OK 0x00000001 |
1042 | #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 | |
1043 | #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 | |
1044 | #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 | |
a66098da | 1045 | #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 |
a66098da LB |
1046 | |
1047 | struct mwl8k_tx_desc { | |
1048 | __le32 status; | |
1049 | __u8 data_rate; | |
1050 | __u8 tx_priority; | |
1051 | __le16 qos_control; | |
1052 | __le32 pkt_phys_addr; | |
1053 | __le16 pkt_len; | |
d89173f2 | 1054 | __u8 dest_MAC_addr[ETH_ALEN]; |
a66098da LB |
1055 | __le32 next_tx_desc_phys_addr; |
1056 | __le32 reserved; | |
1057 | __le16 rate_info; | |
1058 | __u8 peer_id; | |
1059 | __u8 tx_frag_cnt; | |
1060 | } __attribute__((packed)); | |
1061 | ||
1062 | #define MWL8K_TX_DESCS 128 | |
1063 | ||
1064 | static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) | |
1065 | { | |
1066 | struct mwl8k_priv *priv = hw->priv; | |
1067 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1068 | int size; | |
1069 | int i; | |
1070 | ||
ce9e2e1b | 1071 | memset(&txq->tx_stats, 0, sizeof(struct ieee80211_tx_queue_stats)); |
a66098da LB |
1072 | txq->tx_stats.limit = MWL8K_TX_DESCS; |
1073 | txq->tx_head = 0; | |
1074 | txq->tx_tail = 0; | |
1075 | ||
1076 | size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); | |
1077 | ||
1078 | txq->tx_desc_area = | |
1079 | pci_alloc_consistent(priv->pdev, size, &txq->tx_desc_dma); | |
1080 | if (txq->tx_desc_area == NULL) { | |
1081 | printk(KERN_ERR "%s: failed to alloc TX descriptors\n", | |
1082 | priv->name); | |
1083 | return -ENOMEM; | |
1084 | } | |
1085 | memset(txq->tx_desc_area, 0, size); | |
1086 | ||
1087 | txq->tx_skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->tx_skb), | |
1088 | GFP_KERNEL); | |
1089 | if (txq->tx_skb == NULL) { | |
1090 | printk(KERN_ERR "%s: failed to alloc TX skbuff list\n", | |
1091 | priv->name); | |
1092 | pci_free_consistent(priv->pdev, size, | |
1093 | txq->tx_desc_area, txq->tx_desc_dma); | |
1094 | return -ENOMEM; | |
1095 | } | |
1096 | memset(txq->tx_skb, 0, MWL8K_TX_DESCS * sizeof(*txq->tx_skb)); | |
1097 | ||
1098 | for (i = 0; i < MWL8K_TX_DESCS; i++) { | |
1099 | struct mwl8k_tx_desc *tx_desc; | |
1100 | int nexti; | |
1101 | ||
1102 | tx_desc = txq->tx_desc_area + i; | |
1103 | nexti = (i + 1) % MWL8K_TX_DESCS; | |
1104 | ||
1105 | tx_desc->status = 0; | |
1106 | tx_desc->next_tx_desc_phys_addr = | |
1107 | cpu_to_le32(txq->tx_desc_dma + | |
1108 | nexti * sizeof(*tx_desc)); | |
1109 | } | |
1110 | ||
1111 | return 0; | |
1112 | } | |
1113 | ||
1114 | static inline void mwl8k_tx_start(struct mwl8k_priv *priv) | |
1115 | { | |
1116 | iowrite32(MWL8K_H2A_INT_PPA_READY, | |
1117 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1118 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
1119 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1120 | ioread32(priv->regs + MWL8K_HIU_INT_CODE); | |
1121 | } | |
1122 | ||
1123 | static inline int mwl8k_txq_busy(struct mwl8k_priv *priv) | |
1124 | { | |
1125 | return priv->pending_tx_pkts; | |
1126 | } | |
1127 | ||
1128 | struct mwl8k_txq_info { | |
1129 | u32 fw_owned; | |
1130 | u32 drv_owned; | |
1131 | u32 unused; | |
1132 | u32 len; | |
1133 | u32 head; | |
1134 | u32 tail; | |
1135 | }; | |
1136 | ||
1137 | static int mwl8k_scan_tx_ring(struct mwl8k_priv *priv, | |
1138 | struct mwl8k_txq_info txinfo[], | |
1139 | u32 num_queues) | |
1140 | { | |
1141 | int count, desc, status; | |
1142 | struct mwl8k_tx_queue *txq; | |
1143 | struct mwl8k_tx_desc *tx_desc; | |
1144 | int ndescs = 0; | |
1145 | ||
1146 | memset(txinfo, 0, num_queues * sizeof(struct mwl8k_txq_info)); | |
1147 | spin_lock_bh(&priv->tx_lock); | |
1148 | for (count = 0; count < num_queues; count++) { | |
1149 | txq = priv->txq + count; | |
1150 | txinfo[count].len = txq->tx_stats.len; | |
1151 | txinfo[count].head = txq->tx_head; | |
1152 | txinfo[count].tail = txq->tx_tail; | |
1153 | for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { | |
1154 | tx_desc = txq->tx_desc_area + desc; | |
1155 | status = le32_to_cpu(tx_desc->status); | |
1156 | ||
1157 | if (status & MWL8K_TXD_STATUS_FW_OWNED) | |
1158 | txinfo[count].fw_owned++; | |
1159 | else | |
1160 | txinfo[count].drv_owned++; | |
1161 | ||
1162 | if (tx_desc->pkt_len == 0) | |
1163 | txinfo[count].unused++; | |
1164 | } | |
1165 | } | |
1166 | spin_unlock_bh(&priv->tx_lock); | |
1167 | ||
1168 | return ndescs; | |
1169 | } | |
1170 | ||
1171 | static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw, u32 delay_ms) | |
1172 | { | |
a66098da LB |
1173 | struct mwl8k_priv *priv = hw->priv; |
1174 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
ce9e2e1b LB |
1175 | u32 count; |
1176 | unsigned long timeout; | |
a66098da LB |
1177 | |
1178 | might_sleep(); | |
1179 | ||
1180 | if (priv->tx_wait != NULL) | |
1181 | printk(KERN_ERR "WARNING Previous TXWaitEmpty instance\n"); | |
1182 | ||
1183 | spin_lock_bh(&priv->tx_lock); | |
1184 | count = mwl8k_txq_busy(priv); | |
1185 | if (count) { | |
1186 | priv->tx_wait = &cmd_wait; | |
c46563b7 | 1187 | if (priv->radio_on) |
a66098da LB |
1188 | mwl8k_tx_start(priv); |
1189 | } | |
1190 | spin_unlock_bh(&priv->tx_lock); | |
1191 | ||
1192 | if (count) { | |
1193 | struct mwl8k_txq_info txinfo[4]; | |
1194 | int index; | |
1195 | int newcount; | |
1196 | ||
1197 | timeout = wait_for_completion_timeout(&cmd_wait, | |
1198 | msecs_to_jiffies(delay_ms)); | |
1199 | if (timeout) | |
1200 | return 0; | |
1201 | ||
1202 | spin_lock_bh(&priv->tx_lock); | |
1203 | priv->tx_wait = NULL; | |
1204 | newcount = mwl8k_txq_busy(priv); | |
1205 | spin_unlock_bh(&priv->tx_lock); | |
1206 | ||
1207 | printk(KERN_ERR "%s(%u) TIMEDOUT:%ums Pend:%u-->%u\n", | |
1208 | __func__, __LINE__, delay_ms, count, newcount); | |
1209 | ||
1210 | mwl8k_scan_tx_ring(priv, txinfo, 4); | |
ce9e2e1b | 1211 | for (index = 0; index < 4; index++) |
a66098da LB |
1212 | printk(KERN_ERR |
1213 | "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n", | |
1214 | index, | |
1215 | txinfo[index].len, | |
1216 | txinfo[index].head, | |
1217 | txinfo[index].tail, | |
1218 | txinfo[index].fw_owned, | |
1219 | txinfo[index].drv_owned, | |
1220 | txinfo[index].unused); | |
ce9e2e1b | 1221 | |
a66098da LB |
1222 | return -ETIMEDOUT; |
1223 | } | |
1224 | ||
1225 | return 0; | |
1226 | } | |
1227 | ||
c23b5a69 LB |
1228 | #define MWL8K_TXD_SUCCESS(status) \ |
1229 | ((status) & (MWL8K_TXD_STATUS_OK | \ | |
1230 | MWL8K_TXD_STATUS_OK_RETRY | \ | |
1231 | MWL8K_TXD_STATUS_OK_MORE_RETRY)) | |
a66098da LB |
1232 | |
1233 | static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force) | |
1234 | { | |
1235 | struct mwl8k_priv *priv = hw->priv; | |
1236 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1237 | int wake = 0; | |
1238 | ||
1239 | while (txq->tx_stats.len > 0) { | |
1240 | int tx; | |
1241 | int rc; | |
1242 | struct mwl8k_tx_desc *tx_desc; | |
1243 | unsigned long addr; | |
ce9e2e1b | 1244 | int size; |
a66098da LB |
1245 | struct sk_buff *skb; |
1246 | struct ieee80211_tx_info *info; | |
1247 | u32 status; | |
1248 | ||
1249 | rc = 0; | |
1250 | tx = txq->tx_head; | |
1251 | tx_desc = txq->tx_desc_area + tx; | |
1252 | ||
1253 | status = le32_to_cpu(tx_desc->status); | |
1254 | ||
1255 | if (status & MWL8K_TXD_STATUS_FW_OWNED) { | |
1256 | if (!force) | |
1257 | break; | |
1258 | tx_desc->status &= | |
1259 | ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); | |
1260 | } | |
1261 | ||
1262 | txq->tx_head = (tx + 1) % MWL8K_TX_DESCS; | |
1263 | BUG_ON(txq->tx_stats.len == 0); | |
1264 | txq->tx_stats.len--; | |
1265 | priv->pending_tx_pkts--; | |
1266 | ||
1267 | addr = le32_to_cpu(tx_desc->pkt_phys_addr); | |
ce9e2e1b | 1268 | size = le16_to_cpu(tx_desc->pkt_len); |
a66098da LB |
1269 | skb = txq->tx_skb[tx].skb; |
1270 | txq->tx_skb[tx].skb = NULL; | |
1271 | ||
1272 | BUG_ON(skb == NULL); | |
1273 | pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE); | |
1274 | ||
1275 | rc = mwl8k_remove_dma_header(skb); | |
1276 | ||
1277 | /* Mark descriptor as unused */ | |
1278 | tx_desc->pkt_phys_addr = 0; | |
1279 | tx_desc->pkt_len = 0; | |
1280 | ||
1281 | if (txq->tx_skb[tx].clone) { | |
1282 | /* Replace with original skb | |
1283 | * before returning to stack | |
1284 | * as buffer has been cloned | |
1285 | */ | |
1286 | dev_kfree_skb(skb); | |
1287 | skb = txq->tx_skb[tx].clone; | |
1288 | txq->tx_skb[tx].clone = NULL; | |
1289 | } | |
1290 | ||
1291 | if (rc) { | |
1292 | /* Something has gone wrong here. | |
1293 | * Failed to remove DMA header. | |
1294 | * Print error message and drop packet. | |
1295 | */ | |
1296 | printk(KERN_ERR "%s: Error removing DMA header from " | |
1297 | "tx skb 0x%p.\n", priv->name, skb); | |
1298 | ||
1299 | dev_kfree_skb(skb); | |
1300 | continue; | |
1301 | } | |
1302 | ||
1303 | info = IEEE80211_SKB_CB(skb); | |
1304 | ieee80211_tx_info_clear_status(info); | |
ce9e2e1b | 1305 | if (MWL8K_TXD_SUCCESS(status)) |
a66098da | 1306 | info->flags |= IEEE80211_TX_STAT_ACK; |
a66098da LB |
1307 | |
1308 | ieee80211_tx_status_irqsafe(hw, skb); | |
1309 | ||
c46563b7 | 1310 | wake = !priv->inconfig && priv->radio_on; |
a66098da LB |
1311 | } |
1312 | ||
1313 | if (wake) | |
1314 | ieee80211_wake_queue(hw, index); | |
1315 | } | |
1316 | ||
1317 | /* must be called only when the card's transmit is completely halted */ | |
1318 | static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) | |
1319 | { | |
1320 | struct mwl8k_priv *priv = hw->priv; | |
1321 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1322 | ||
1323 | mwl8k_txq_reclaim(hw, index, 1); | |
1324 | ||
1325 | kfree(txq->tx_skb); | |
1326 | txq->tx_skb = NULL; | |
1327 | ||
1328 | pci_free_consistent(priv->pdev, | |
1329 | MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), | |
1330 | txq->tx_desc_area, txq->tx_desc_dma); | |
1331 | txq->tx_desc_area = NULL; | |
1332 | } | |
1333 | ||
1334 | static int | |
1335 | mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) | |
1336 | { | |
1337 | struct mwl8k_priv *priv = hw->priv; | |
1338 | struct ieee80211_tx_info *tx_info; | |
1339 | struct ieee80211_hdr *wh; | |
1340 | struct mwl8k_tx_queue *txq; | |
1341 | struct mwl8k_tx_desc *tx; | |
1342 | struct mwl8k_dma_data *tr; | |
1343 | struct mwl8k_vif *mwl8k_vif; | |
1344 | struct sk_buff *org_skb = skb; | |
1345 | dma_addr_t dma; | |
1346 | u16 qos = 0; | |
1347 | bool qosframe = false, ampduframe = false; | |
1348 | bool mcframe = false, eapolframe = false; | |
1349 | bool amsduframe = false; | |
1350 | __le16 fc; | |
1351 | ||
1352 | txq = priv->txq + index; | |
1353 | tx = txq->tx_desc_area + txq->tx_tail; | |
1354 | ||
1355 | BUG_ON(txq->tx_skb[txq->tx_tail].skb != NULL); | |
1356 | ||
1357 | /* | |
1358 | * Append HW DMA header to start of packet. Drop packet if | |
1359 | * there is not enough space or a failure to unshare/unclone | |
1360 | * the skb. | |
1361 | */ | |
1362 | skb = mwl8k_add_dma_header(skb); | |
1363 | ||
1364 | if (skb == NULL) { | |
1365 | printk(KERN_DEBUG "%s: failed to prepend HW DMA " | |
1366 | "header, dropping TX frame.\n", priv->name); | |
1367 | dev_kfree_skb(org_skb); | |
1368 | return NETDEV_TX_OK; | |
1369 | } | |
1370 | ||
1371 | tx_info = IEEE80211_SKB_CB(skb); | |
1372 | mwl8k_vif = MWL8K_VIF(tx_info->control.vif); | |
1373 | tr = (struct mwl8k_dma_data *)skb->data; | |
1374 | wh = &tr->wh; | |
1375 | fc = wh->frame_control; | |
1376 | qosframe = ieee80211_is_data_qos(fc); | |
1377 | mcframe = is_multicast_ether_addr(wh->addr1); | |
1378 | ampduframe = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU); | |
1379 | ||
1380 | if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
1381 | u16 seqno = mwl8k_vif->seqno; | |
1382 | wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
1383 | wh->seq_ctrl |= cpu_to_le16(seqno << 4); | |
1384 | mwl8k_vif->seqno = seqno++ % 4096; | |
1385 | } | |
1386 | ||
1387 | if (qosframe) | |
1388 | qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); | |
1389 | ||
1390 | dma = pci_map_single(priv->pdev, skb->data, | |
1391 | skb->len, PCI_DMA_TODEVICE); | |
1392 | ||
1393 | if (pci_dma_mapping_error(priv->pdev, dma)) { | |
1394 | printk(KERN_DEBUG "%s: failed to dma map skb, " | |
1395 | "dropping TX frame.\n", priv->name); | |
1396 | ||
1397 | if (org_skb != NULL) | |
1398 | dev_kfree_skb(org_skb); | |
1399 | if (skb != NULL) | |
1400 | dev_kfree_skb(skb); | |
1401 | return NETDEV_TX_OK; | |
1402 | } | |
1403 | ||
1404 | /* Set desc header, cpu bit order. */ | |
1405 | tx->status = 0; | |
1406 | tx->data_rate = 0; | |
1407 | tx->tx_priority = index; | |
1408 | tx->qos_control = 0; | |
1409 | tx->rate_info = 0; | |
1410 | tx->peer_id = mwl8k_vif->peer_id; | |
1411 | ||
1412 | amsduframe = !!(qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT); | |
1413 | ||
1414 | /* Setup firmware control bit fields for each frame type. */ | |
1415 | if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)) { | |
1416 | tx->data_rate = 0; | |
1417 | qos = mwl8k_qos_setbit_eosp(qos); | |
1418 | /* Set Queue size to unspecified */ | |
1419 | qos = mwl8k_qos_setbit_qlen(qos, 0xff); | |
1420 | } else if (ieee80211_is_data(fc)) { | |
1421 | tx->data_rate = 1; | |
1422 | if (mcframe) | |
1423 | tx->status |= MWL8K_TXD_STATUS_MULTICAST_TX; | |
1424 | ||
1425 | /* | |
1426 | * Tell firmware to not send EAPOL pkts in an | |
1427 | * aggregate. Verify against mac80211 tx path. If | |
1428 | * stack turns off AMPDU for an EAPOL frame this | |
1429 | * check will be removed. | |
1430 | */ | |
1431 | if (eapolframe) { | |
1432 | qos = mwl8k_qos_setbit_ack(qos, | |
1433 | MWL8K_TXD_ACK_POLICY_NORMAL); | |
1434 | } else { | |
1435 | /* Send pkt in an aggregate if AMPDU frame. */ | |
1436 | if (ampduframe) | |
1437 | qos = mwl8k_qos_setbit_ack(qos, | |
1438 | MWL8K_TXD_ACK_POLICY_BLOCKACK); | |
1439 | else | |
1440 | qos = mwl8k_qos_setbit_ack(qos, | |
1441 | MWL8K_TXD_ACK_POLICY_NORMAL); | |
1442 | ||
1443 | if (amsduframe) | |
1444 | qos = mwl8k_qos_setbit_amsdu(qos); | |
1445 | } | |
1446 | } | |
1447 | ||
1448 | /* Convert to little endian */ | |
1449 | tx->qos_control = cpu_to_le16(qos); | |
1450 | tx->status = cpu_to_le32(tx->status); | |
1451 | tx->pkt_phys_addr = cpu_to_le32(dma); | |
1452 | tx->pkt_len = cpu_to_le16(skb->len); | |
1453 | ||
1454 | txq->tx_skb[txq->tx_tail].skb = skb; | |
1455 | txq->tx_skb[txq->tx_tail].clone = | |
1456 | skb == org_skb ? NULL : org_skb; | |
1457 | ||
1458 | spin_lock_bh(&priv->tx_lock); | |
1459 | ||
1460 | tx->status = cpu_to_le32(MWL8K_TXD_STATUS_OK | | |
1461 | MWL8K_TXD_STATUS_FW_OWNED); | |
1462 | wmb(); | |
1463 | txq->tx_stats.len++; | |
1464 | priv->pending_tx_pkts++; | |
1465 | txq->tx_stats.count++; | |
1466 | txq->tx_tail++; | |
1467 | ||
1468 | if (txq->tx_tail == MWL8K_TX_DESCS) | |
1469 | txq->tx_tail = 0; | |
1470 | if (txq->tx_head == txq->tx_tail) | |
1471 | ieee80211_stop_queue(hw, index); | |
1472 | ||
1473 | if (priv->inconfig) { | |
1474 | /* | |
1475 | * Silently queue packet when we are in the middle of | |
1476 | * a config cycle. Notify firmware only if we are | |
1477 | * waiting for TXQs to empty. If a packet is sent | |
1478 | * before .config() is complete, perhaps it is better | |
1479 | * to drop the packet, as the channel is being changed | |
1480 | * and the packet will end up on the wrong channel. | |
1481 | */ | |
1482 | printk(KERN_ERR "%s(): WARNING TX activity while " | |
1483 | "in config\n", __func__); | |
1484 | ||
1485 | if (priv->tx_wait != NULL) | |
1486 | mwl8k_tx_start(priv); | |
1487 | } else | |
1488 | mwl8k_tx_start(priv); | |
1489 | ||
1490 | spin_unlock_bh(&priv->tx_lock); | |
1491 | ||
1492 | return NETDEV_TX_OK; | |
1493 | } | |
1494 | ||
1495 | ||
1496 | /* | |
1497 | * Command processing. | |
1498 | */ | |
1499 | ||
1500 | /* Timeout firmware commands after 2000ms */ | |
1501 | #define MWL8K_CMD_TIMEOUT_MS 2000 | |
1502 | ||
1503 | static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) | |
1504 | { | |
1505 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
1506 | struct mwl8k_priv *priv = hw->priv; | |
1507 | void __iomem *regs = priv->regs; | |
1508 | dma_addr_t dma_addr; | |
1509 | unsigned int dma_size; | |
1510 | int rc; | |
a66098da LB |
1511 | unsigned long timeout = 0; |
1512 | u8 buf[32]; | |
1513 | ||
1514 | cmd->result = 0xFFFF; | |
1515 | dma_size = le16_to_cpu(cmd->length); | |
1516 | dma_addr = pci_map_single(priv->pdev, cmd, dma_size, | |
1517 | PCI_DMA_BIDIRECTIONAL); | |
1518 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
1519 | return -ENOMEM; | |
1520 | ||
1521 | if (priv->hostcmd_wait != NULL) | |
1522 | printk(KERN_ERR "WARNING host command in progress\n"); | |
1523 | ||
1524 | spin_lock_irq(&priv->fw_lock); | |
1525 | priv->hostcmd_wait = &cmd_wait; | |
1526 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
1527 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
1528 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1529 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
1530 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1531 | spin_unlock_irq(&priv->fw_lock); | |
1532 | ||
1533 | timeout = wait_for_completion_timeout(&cmd_wait, | |
1534 | msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); | |
1535 | ||
37055bd4 LB |
1536 | pci_unmap_single(priv->pdev, dma_addr, dma_size, |
1537 | PCI_DMA_BIDIRECTIONAL); | |
1538 | ||
a66098da LB |
1539 | if (!timeout) { |
1540 | spin_lock_irq(&priv->fw_lock); | |
1541 | priv->hostcmd_wait = NULL; | |
1542 | spin_unlock_irq(&priv->fw_lock); | |
1543 | printk(KERN_ERR "%s: Command %s timeout after %u ms\n", | |
1544 | priv->name, | |
1545 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
1546 | MWL8K_CMD_TIMEOUT_MS); | |
1547 | rc = -ETIMEDOUT; | |
1548 | } else { | |
ce9e2e1b | 1549 | rc = cmd->result ? -EINVAL : 0; |
a66098da LB |
1550 | if (rc) |
1551 | printk(KERN_ERR "%s: Command %s error 0x%x\n", | |
1552 | priv->name, | |
1553 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
ce9e2e1b | 1554 | cmd->result); |
a66098da LB |
1555 | } |
1556 | ||
a66098da LB |
1557 | return rc; |
1558 | } | |
1559 | ||
1560 | /* | |
1561 | * GET_HW_SPEC. | |
1562 | */ | |
1563 | struct mwl8k_cmd_get_hw_spec { | |
1564 | struct mwl8k_cmd_pkt header; | |
1565 | __u8 hw_rev; | |
1566 | __u8 host_interface; | |
1567 | __le16 num_mcaddrs; | |
d89173f2 | 1568 | __u8 perm_addr[ETH_ALEN]; |
a66098da LB |
1569 | __le16 region_code; |
1570 | __le32 fw_rev; | |
1571 | __le32 ps_cookie; | |
1572 | __le32 caps; | |
1573 | __u8 mcs_bitmap[16]; | |
1574 | __le32 rx_queue_ptr; | |
1575 | __le32 num_tx_queues; | |
1576 | __le32 tx_queue_ptrs[MWL8K_TX_QUEUES]; | |
1577 | __le32 caps2; | |
1578 | __le32 num_tx_desc_per_queue; | |
1579 | __le32 total_rx_desc; | |
1580 | } __attribute__((packed)); | |
1581 | ||
1582 | static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw *hw) | |
1583 | { | |
1584 | struct mwl8k_priv *priv = hw->priv; | |
1585 | struct mwl8k_cmd_get_hw_spec *cmd; | |
1586 | int rc; | |
1587 | int i; | |
1588 | ||
1589 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1590 | if (cmd == NULL) | |
1591 | return -ENOMEM; | |
1592 | ||
1593 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); | |
1594 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1595 | ||
1596 | memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); | |
1597 | cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); | |
1598 | cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rx_desc_dma); | |
4ff6432e | 1599 | cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES); |
a66098da LB |
1600 | for (i = 0; i < MWL8K_TX_QUEUES; i++) |
1601 | cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].tx_desc_dma); | |
4ff6432e LB |
1602 | cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); |
1603 | cmd->total_rx_desc = cpu_to_le32(MWL8K_RX_DESCS); | |
a66098da LB |
1604 | |
1605 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1606 | ||
1607 | if (!rc) { | |
1608 | SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); | |
1609 | priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); | |
4ff6432e | 1610 | priv->fw_rev = le32_to_cpu(cmd->fw_rev); |
a66098da | 1611 | priv->hw_rev = cmd->hw_rev; |
a66098da LB |
1612 | } |
1613 | ||
1614 | kfree(cmd); | |
1615 | return rc; | |
1616 | } | |
1617 | ||
1618 | /* | |
1619 | * CMD_MAC_MULTICAST_ADR. | |
1620 | */ | |
1621 | struct mwl8k_cmd_mac_multicast_adr { | |
1622 | struct mwl8k_cmd_pkt header; | |
1623 | __le16 action; | |
1624 | __le16 numaddr; | |
ce9e2e1b | 1625 | __u8 addr[0][ETH_ALEN]; |
a66098da LB |
1626 | }; |
1627 | ||
1628 | #define MWL8K_ENABLE_RX_MULTICAST 0x000F | |
ce9e2e1b | 1629 | |
a66098da LB |
1630 | static int mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, |
1631 | int mc_count, | |
1632 | struct dev_addr_list *mclist) | |
1633 | { | |
1634 | struct mwl8k_cmd_mac_multicast_adr *cmd; | |
1635 | int index = 0; | |
1636 | int rc; | |
ce9e2e1b LB |
1637 | int size = sizeof(*cmd) + mc_count * ETH_ALEN; |
1638 | ||
a66098da LB |
1639 | cmd = kzalloc(size, GFP_KERNEL); |
1640 | if (cmd == NULL) | |
1641 | return -ENOMEM; | |
1642 | ||
1643 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); | |
1644 | cmd->header.length = cpu_to_le16(size); | |
1645 | cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); | |
1646 | cmd->numaddr = cpu_to_le16(mc_count); | |
ce9e2e1b LB |
1647 | |
1648 | while (index < mc_count && mclist) { | |
d89173f2 | 1649 | if (mclist->da_addrlen != ETH_ALEN) { |
a66098da LB |
1650 | rc = -EINVAL; |
1651 | goto mwl8k_cmd_mac_multicast_adr_exit; | |
1652 | } | |
ce9e2e1b | 1653 | memcpy(cmd->addr[index++], mclist->da_addr, ETH_ALEN); |
a66098da LB |
1654 | mclist = mclist->next; |
1655 | } | |
1656 | ||
1657 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1658 | ||
1659 | mwl8k_cmd_mac_multicast_adr_exit: | |
1660 | kfree(cmd); | |
1661 | return rc; | |
1662 | } | |
1663 | ||
1664 | /* | |
1665 | * CMD_802_11_GET_STAT. | |
1666 | */ | |
1667 | struct mwl8k_cmd_802_11_get_stat { | |
1668 | struct mwl8k_cmd_pkt header; | |
1669 | __le16 action; | |
1670 | __le32 stats[64]; | |
1671 | } __attribute__((packed)); | |
1672 | ||
1673 | #define MWL8K_STAT_ACK_FAILURE 9 | |
1674 | #define MWL8K_STAT_RTS_FAILURE 12 | |
1675 | #define MWL8K_STAT_FCS_ERROR 24 | |
1676 | #define MWL8K_STAT_RTS_SUCCESS 11 | |
1677 | ||
1678 | static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw *hw, | |
1679 | struct ieee80211_low_level_stats *stats) | |
1680 | { | |
1681 | struct mwl8k_cmd_802_11_get_stat *cmd; | |
1682 | int rc; | |
1683 | ||
1684 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1685 | if (cmd == NULL) | |
1686 | return -ENOMEM; | |
1687 | ||
1688 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); | |
1689 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1690 | cmd->action = cpu_to_le16(MWL8K_CMD_GET); | |
1691 | ||
1692 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1693 | if (!rc) { | |
1694 | stats->dot11ACKFailureCount = | |
1695 | le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); | |
1696 | stats->dot11RTSFailureCount = | |
1697 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); | |
1698 | stats->dot11FCSErrorCount = | |
1699 | le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); | |
1700 | stats->dot11RTSSuccessCount = | |
1701 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); | |
1702 | } | |
1703 | kfree(cmd); | |
1704 | ||
1705 | return rc; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * CMD_802_11_RADIO_CONTROL. | |
1710 | */ | |
1711 | struct mwl8k_cmd_802_11_radio_control { | |
1712 | struct mwl8k_cmd_pkt header; | |
1713 | __le16 action; | |
1714 | __le16 control; | |
1715 | __le16 radio_on; | |
1716 | } __attribute__((packed)); | |
1717 | ||
c46563b7 LB |
1718 | static int |
1719 | mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, bool enable, bool force) | |
a66098da LB |
1720 | { |
1721 | struct mwl8k_priv *priv = hw->priv; | |
1722 | struct mwl8k_cmd_802_11_radio_control *cmd; | |
1723 | int rc; | |
1724 | ||
c46563b7 | 1725 | if (enable == priv->radio_on && !force) |
a66098da LB |
1726 | return 0; |
1727 | ||
a66098da LB |
1728 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
1729 | if (cmd == NULL) | |
1730 | return -ENOMEM; | |
1731 | ||
1732 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); | |
1733 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1734 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
68ce3884 | 1735 | cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); |
a66098da LB |
1736 | cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); |
1737 | ||
1738 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1739 | kfree(cmd); | |
1740 | ||
1741 | if (!rc) | |
c46563b7 | 1742 | priv->radio_on = enable; |
a66098da LB |
1743 | |
1744 | return rc; | |
1745 | } | |
1746 | ||
c46563b7 LB |
1747 | static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw *hw) |
1748 | { | |
1749 | return mwl8k_cmd_802_11_radio_control(hw, 0, 0); | |
1750 | } | |
1751 | ||
1752 | static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw *hw) | |
1753 | { | |
1754 | return mwl8k_cmd_802_11_radio_control(hw, 1, 0); | |
1755 | } | |
1756 | ||
a66098da LB |
1757 | static int |
1758 | mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) | |
1759 | { | |
1760 | struct mwl8k_priv *priv; | |
1761 | ||
1762 | if (hw == NULL || hw->priv == NULL) | |
1763 | return -EINVAL; | |
1764 | priv = hw->priv; | |
1765 | ||
68ce3884 | 1766 | priv->radio_short_preamble = short_preamble; |
a66098da | 1767 | |
c46563b7 | 1768 | return mwl8k_cmd_802_11_radio_control(hw, 1, 1); |
a66098da LB |
1769 | } |
1770 | ||
1771 | /* | |
1772 | * CMD_802_11_RF_TX_POWER. | |
1773 | */ | |
1774 | #define MWL8K_TX_POWER_LEVEL_TOTAL 8 | |
1775 | ||
1776 | struct mwl8k_cmd_802_11_rf_tx_power { | |
1777 | struct mwl8k_cmd_pkt header; | |
1778 | __le16 action; | |
1779 | __le16 support_level; | |
1780 | __le16 current_level; | |
1781 | __le16 reserved; | |
1782 | __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; | |
1783 | } __attribute__((packed)); | |
1784 | ||
1785 | static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw *hw, int dBm) | |
1786 | { | |
1787 | struct mwl8k_cmd_802_11_rf_tx_power *cmd; | |
1788 | int rc; | |
1789 | ||
1790 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1791 | if (cmd == NULL) | |
1792 | return -ENOMEM; | |
1793 | ||
1794 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); | |
1795 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1796 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1797 | cmd->support_level = cpu_to_le16(dBm); | |
1798 | ||
1799 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1800 | kfree(cmd); | |
1801 | ||
1802 | return rc; | |
1803 | } | |
1804 | ||
1805 | /* | |
1806 | * CMD_SET_PRE_SCAN. | |
1807 | */ | |
1808 | struct mwl8k_cmd_set_pre_scan { | |
1809 | struct mwl8k_cmd_pkt header; | |
1810 | } __attribute__((packed)); | |
1811 | ||
1812 | static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) | |
1813 | { | |
1814 | struct mwl8k_cmd_set_pre_scan *cmd; | |
1815 | int rc; | |
1816 | ||
1817 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1818 | if (cmd == NULL) | |
1819 | return -ENOMEM; | |
1820 | ||
1821 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); | |
1822 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1823 | ||
1824 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1825 | kfree(cmd); | |
1826 | ||
1827 | return rc; | |
1828 | } | |
1829 | ||
1830 | /* | |
1831 | * CMD_SET_POST_SCAN. | |
1832 | */ | |
1833 | struct mwl8k_cmd_set_post_scan { | |
1834 | struct mwl8k_cmd_pkt header; | |
1835 | __le32 isibss; | |
d89173f2 | 1836 | __u8 bssid[ETH_ALEN]; |
a66098da LB |
1837 | } __attribute__((packed)); |
1838 | ||
1839 | static int | |
ce9e2e1b | 1840 | mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 *mac) |
a66098da LB |
1841 | { |
1842 | struct mwl8k_cmd_set_post_scan *cmd; | |
1843 | int rc; | |
1844 | ||
1845 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1846 | if (cmd == NULL) | |
1847 | return -ENOMEM; | |
1848 | ||
1849 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); | |
1850 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1851 | cmd->isibss = 0; | |
d89173f2 | 1852 | memcpy(cmd->bssid, mac, ETH_ALEN); |
a66098da LB |
1853 | |
1854 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1855 | kfree(cmd); | |
1856 | ||
1857 | return rc; | |
1858 | } | |
1859 | ||
1860 | /* | |
1861 | * CMD_SET_RF_CHANNEL. | |
1862 | */ | |
1863 | struct mwl8k_cmd_set_rf_channel { | |
1864 | struct mwl8k_cmd_pkt header; | |
1865 | __le16 action; | |
1866 | __u8 current_channel; | |
1867 | __le32 channel_flags; | |
1868 | } __attribute__((packed)); | |
1869 | ||
1870 | static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, | |
1871 | struct ieee80211_channel *channel) | |
1872 | { | |
1873 | struct mwl8k_cmd_set_rf_channel *cmd; | |
1874 | int rc; | |
1875 | ||
1876 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1877 | if (cmd == NULL) | |
1878 | return -ENOMEM; | |
1879 | ||
1880 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); | |
1881 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1882 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1883 | cmd->current_channel = channel->hw_value; | |
1884 | if (channel->band == IEEE80211_BAND_2GHZ) | |
1885 | cmd->channel_flags = cpu_to_le32(0x00000081); | |
1886 | else | |
1887 | cmd->channel_flags = cpu_to_le32(0x00000000); | |
1888 | ||
1889 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1890 | kfree(cmd); | |
1891 | ||
1892 | return rc; | |
1893 | } | |
1894 | ||
1895 | /* | |
1896 | * CMD_SET_SLOT. | |
1897 | */ | |
1898 | struct mwl8k_cmd_set_slot { | |
1899 | struct mwl8k_cmd_pkt header; | |
1900 | __le16 action; | |
1901 | __u8 short_slot; | |
1902 | } __attribute__((packed)); | |
1903 | ||
1904 | static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, int slot_time) | |
1905 | { | |
1906 | struct mwl8k_cmd_set_slot *cmd; | |
1907 | int rc; | |
1908 | ||
1909 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1910 | if (cmd == NULL) | |
1911 | return -ENOMEM; | |
1912 | ||
1913 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); | |
1914 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1915 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1916 | cmd->short_slot = slot_time == MWL8K_SHORT_SLOTTIME ? 1 : 0; | |
1917 | ||
1918 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1919 | kfree(cmd); | |
1920 | ||
1921 | return rc; | |
1922 | } | |
1923 | ||
1924 | /* | |
1925 | * CMD_MIMO_CONFIG. | |
1926 | */ | |
1927 | struct mwl8k_cmd_mimo_config { | |
1928 | struct mwl8k_cmd_pkt header; | |
1929 | __le32 action; | |
1930 | __u8 rx_antenna_map; | |
1931 | __u8 tx_antenna_map; | |
1932 | } __attribute__((packed)); | |
1933 | ||
1934 | static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) | |
1935 | { | |
1936 | struct mwl8k_cmd_mimo_config *cmd; | |
1937 | int rc; | |
1938 | ||
1939 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1940 | if (cmd == NULL) | |
1941 | return -ENOMEM; | |
1942 | ||
1943 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); | |
1944 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1945 | cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); | |
1946 | cmd->rx_antenna_map = rx; | |
1947 | cmd->tx_antenna_map = tx; | |
1948 | ||
1949 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1950 | kfree(cmd); | |
1951 | ||
1952 | return rc; | |
1953 | } | |
1954 | ||
1955 | /* | |
1956 | * CMD_ENABLE_SNIFFER. | |
1957 | */ | |
1958 | struct mwl8k_cmd_enable_sniffer { | |
1959 | struct mwl8k_cmd_pkt header; | |
1960 | __le32 action; | |
1961 | } __attribute__((packed)); | |
1962 | ||
1963 | static int mwl8k_enable_sniffer(struct ieee80211_hw *hw, bool enable) | |
1964 | { | |
1965 | struct mwl8k_cmd_enable_sniffer *cmd; | |
1966 | int rc; | |
1967 | ||
1968 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1969 | if (cmd == NULL) | |
1970 | return -ENOMEM; | |
1971 | ||
1972 | cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); | |
1973 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
ce9e2e1b | 1974 | cmd->action = cpu_to_le32(!!enable); |
a66098da LB |
1975 | |
1976 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1977 | kfree(cmd); | |
1978 | ||
1979 | return rc; | |
1980 | } | |
1981 | ||
1982 | /* | |
ce9e2e1b | 1983 | * CMD_SET_RATEADAPT_MODE. |
a66098da LB |
1984 | */ |
1985 | struct mwl8k_cmd_set_rate_adapt_mode { | |
1986 | struct mwl8k_cmd_pkt header; | |
1987 | __le16 action; | |
1988 | __le16 mode; | |
1989 | } __attribute__((packed)); | |
1990 | ||
1991 | static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw *hw, __u16 mode) | |
1992 | { | |
1993 | struct mwl8k_cmd_set_rate_adapt_mode *cmd; | |
1994 | int rc; | |
1995 | ||
1996 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1997 | if (cmd == NULL) | |
1998 | return -ENOMEM; | |
1999 | ||
2000 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); | |
2001 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2002 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
2003 | cmd->mode = cpu_to_le16(mode); | |
2004 | ||
2005 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2006 | kfree(cmd); | |
2007 | ||
2008 | return rc; | |
2009 | } | |
2010 | ||
2011 | /* | |
2012 | * CMD_SET_WMM_MODE. | |
2013 | */ | |
2014 | struct mwl8k_cmd_set_wmm { | |
2015 | struct mwl8k_cmd_pkt header; | |
2016 | __le16 action; | |
2017 | } __attribute__((packed)); | |
2018 | ||
2019 | static int mwl8k_set_wmm(struct ieee80211_hw *hw, bool enable) | |
2020 | { | |
2021 | struct mwl8k_priv *priv = hw->priv; | |
2022 | struct mwl8k_cmd_set_wmm *cmd; | |
2023 | int rc; | |
2024 | ||
2025 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2026 | if (cmd == NULL) | |
2027 | return -ENOMEM; | |
2028 | ||
2029 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); | |
2030 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2031 | cmd->action = enable ? cpu_to_le16(MWL8K_CMD_SET) : 0; | |
2032 | ||
2033 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2034 | kfree(cmd); | |
2035 | ||
2036 | if (!rc) | |
2037 | priv->wmm_mode = enable; | |
2038 | ||
2039 | return rc; | |
2040 | } | |
2041 | ||
2042 | /* | |
2043 | * CMD_SET_RTS_THRESHOLD. | |
2044 | */ | |
2045 | struct mwl8k_cmd_rts_threshold { | |
2046 | struct mwl8k_cmd_pkt header; | |
2047 | __le16 action; | |
2048 | __le16 threshold; | |
2049 | } __attribute__((packed)); | |
2050 | ||
2051 | static int mwl8k_rts_threshold(struct ieee80211_hw *hw, | |
2052 | u16 action, u16 *threshold) | |
2053 | { | |
2054 | struct mwl8k_cmd_rts_threshold *cmd; | |
2055 | int rc; | |
2056 | ||
2057 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2058 | if (cmd == NULL) | |
2059 | return -ENOMEM; | |
2060 | ||
2061 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); | |
2062 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2063 | cmd->action = cpu_to_le16(action); | |
2064 | cmd->threshold = cpu_to_le16(*threshold); | |
2065 | ||
2066 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2067 | kfree(cmd); | |
2068 | ||
2069 | return rc; | |
2070 | } | |
2071 | ||
2072 | /* | |
2073 | * CMD_SET_EDCA_PARAMS. | |
2074 | */ | |
2075 | struct mwl8k_cmd_set_edca_params { | |
2076 | struct mwl8k_cmd_pkt header; | |
2077 | ||
2078 | /* See MWL8K_SET_EDCA_XXX below */ | |
2079 | __le16 action; | |
2080 | ||
2081 | /* TX opportunity in units of 32 us */ | |
2082 | __le16 txop; | |
2083 | ||
2084 | /* Log exponent of max contention period: 0...15*/ | |
2085 | __u8 log_cw_max; | |
2086 | ||
2087 | /* Log exponent of min contention period: 0...15 */ | |
2088 | __u8 log_cw_min; | |
2089 | ||
2090 | /* Adaptive interframe spacing in units of 32us */ | |
2091 | __u8 aifs; | |
2092 | ||
2093 | /* TX queue to configure */ | |
2094 | __u8 txq; | |
2095 | } __attribute__((packed)); | |
2096 | ||
a66098da LB |
2097 | #define MWL8K_SET_EDCA_CW 0x01 |
2098 | #define MWL8K_SET_EDCA_TXOP 0x02 | |
2099 | #define MWL8K_SET_EDCA_AIFS 0x04 | |
2100 | ||
2101 | #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ | |
2102 | MWL8K_SET_EDCA_TXOP | \ | |
2103 | MWL8K_SET_EDCA_AIFS) | |
2104 | ||
2105 | static int | |
2106 | mwl8k_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, | |
2107 | __u16 cw_min, __u16 cw_max, | |
2108 | __u8 aifs, __u16 txop) | |
2109 | { | |
2110 | struct mwl8k_cmd_set_edca_params *cmd; | |
a66098da LB |
2111 | int rc; |
2112 | ||
2113 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2114 | if (cmd == NULL) | |
2115 | return -ENOMEM; | |
2116 | ||
a66098da LB |
2117 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); |
2118 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
a66098da LB |
2119 | cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); |
2120 | cmd->txop = cpu_to_le16(txop); | |
ce9e2e1b LB |
2121 | cmd->log_cw_max = (u8)ilog2(cw_max + 1); |
2122 | cmd->log_cw_min = (u8)ilog2(cw_min + 1); | |
a66098da LB |
2123 | cmd->aifs = aifs; |
2124 | cmd->txq = qnum; | |
2125 | ||
2126 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2127 | kfree(cmd); | |
2128 | ||
2129 | return rc; | |
2130 | } | |
2131 | ||
2132 | /* | |
2133 | * CMD_FINALIZE_JOIN. | |
2134 | */ | |
2135 | ||
2136 | /* FJ beacon buffer size is compiled into the firmware. */ | |
2137 | #define MWL8K_FJ_BEACON_MAXLEN 128 | |
2138 | ||
2139 | struct mwl8k_cmd_finalize_join { | |
2140 | struct mwl8k_cmd_pkt header; | |
2141 | __le32 sleep_interval; /* Number of beacon periods to sleep */ | |
2142 | __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; | |
2143 | } __attribute__((packed)); | |
2144 | ||
2145 | static int mwl8k_finalize_join(struct ieee80211_hw *hw, void *frame, | |
2146 | __u16 framelen, __u16 dtim) | |
2147 | { | |
2148 | struct mwl8k_cmd_finalize_join *cmd; | |
2149 | struct ieee80211_mgmt *payload = frame; | |
2150 | u16 hdrlen; | |
2151 | u32 payload_len; | |
2152 | int rc; | |
2153 | ||
2154 | if (frame == NULL) | |
2155 | return -EINVAL; | |
2156 | ||
2157 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2158 | if (cmd == NULL) | |
2159 | return -ENOMEM; | |
2160 | ||
2161 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); | |
2162 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
ce9e2e1b | 2163 | cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); |
a66098da LB |
2164 | |
2165 | hdrlen = ieee80211_hdrlen(payload->frame_control); | |
2166 | ||
2167 | payload_len = framelen > hdrlen ? framelen - hdrlen : 0; | |
2168 | ||
2169 | /* XXX TBD Might just have to abort and return an error */ | |
2170 | if (payload_len > MWL8K_FJ_BEACON_MAXLEN) | |
2171 | printk(KERN_ERR "%s(): WARNING: Incomplete beacon " | |
2172 | "sent to firmware. Sz=%u MAX=%u\n", __func__, | |
2173 | payload_len, MWL8K_FJ_BEACON_MAXLEN); | |
2174 | ||
ce9e2e1b LB |
2175 | if (payload_len > MWL8K_FJ_BEACON_MAXLEN) |
2176 | payload_len = MWL8K_FJ_BEACON_MAXLEN; | |
a66098da LB |
2177 | |
2178 | if (payload && payload_len) | |
2179 | memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); | |
2180 | ||
2181 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2182 | kfree(cmd); | |
2183 | return rc; | |
2184 | } | |
2185 | ||
2186 | /* | |
2187 | * CMD_UPDATE_STADB. | |
2188 | */ | |
2189 | struct mwl8k_cmd_update_sta_db { | |
2190 | struct mwl8k_cmd_pkt header; | |
2191 | ||
2192 | /* See STADB_ACTION_TYPE */ | |
2193 | __le32 action; | |
2194 | ||
2195 | /* Peer MAC address */ | |
d89173f2 | 2196 | __u8 peer_addr[ETH_ALEN]; |
a66098da LB |
2197 | |
2198 | __le32 reserved; | |
2199 | ||
2200 | /* Peer info - valid during add/update. */ | |
2201 | struct peer_capability_info peer_info; | |
2202 | } __attribute__((packed)); | |
2203 | ||
2204 | static int mwl8k_cmd_update_sta_db(struct ieee80211_hw *hw, | |
2205 | struct ieee80211_vif *vif, __u32 action) | |
2206 | { | |
2207 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2208 | struct ieee80211_bss_conf *info = &mv_vif->bss_info; | |
2209 | struct mwl8k_cmd_update_sta_db *cmd; | |
2210 | struct peer_capability_info *peer_info; | |
2211 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
a66098da LB |
2212 | int rc; |
2213 | __u8 count, *rates; | |
2214 | ||
2215 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2216 | if (cmd == NULL) | |
2217 | return -ENOMEM; | |
2218 | ||
2219 | cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); | |
2220 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2221 | ||
2222 | cmd->action = cpu_to_le32(action); | |
2223 | peer_info = &cmd->peer_info; | |
d89173f2 | 2224 | memcpy(cmd->peer_addr, mv_vif->bssid, ETH_ALEN); |
a66098da LB |
2225 | |
2226 | switch (action) { | |
2227 | case MWL8K_STA_DB_ADD_ENTRY: | |
2228 | case MWL8K_STA_DB_MODIFY_ENTRY: | |
2229 | /* Build peer_info block */ | |
2230 | peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; | |
2231 | peer_info->basic_caps = cpu_to_le16(info->assoc_capability); | |
2232 | peer_info->interop = 1; | |
2233 | peer_info->amsdu_enabled = 0; | |
2234 | ||
2235 | rates = peer_info->legacy_rates; | |
ce9e2e1b | 2236 | for (count = 0; count < mv_vif->legacy_nrates; count++) |
a66098da LB |
2237 | rates[count] = bitrates[count].hw_value; |
2238 | ||
2239 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2240 | if (rc == 0) | |
2241 | mv_vif->peer_id = peer_info->station_id; | |
2242 | ||
2243 | break; | |
2244 | ||
2245 | case MWL8K_STA_DB_DEL_ENTRY: | |
2246 | case MWL8K_STA_DB_FLUSH: | |
2247 | default: | |
2248 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2249 | if (rc == 0) | |
2250 | mv_vif->peer_id = 0; | |
2251 | break; | |
2252 | } | |
2253 | kfree(cmd); | |
2254 | ||
2255 | return rc; | |
2256 | } | |
2257 | ||
2258 | /* | |
2259 | * CMD_SET_AID. | |
2260 | */ | |
a66098da LB |
2261 | #define MWL8K_RATE_INDEX_MAX_ARRAY 14 |
2262 | ||
2263 | #define MWL8K_FRAME_PROT_DISABLED 0x00 | |
2264 | #define MWL8K_FRAME_PROT_11G 0x07 | |
2265 | #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 | |
2266 | #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 | |
a66098da LB |
2267 | |
2268 | struct mwl8k_cmd_update_set_aid { | |
2269 | struct mwl8k_cmd_pkt header; | |
2270 | __le16 aid; | |
2271 | ||
2272 | /* AP's MAC address (BSSID) */ | |
d89173f2 | 2273 | __u8 bssid[ETH_ALEN]; |
a66098da LB |
2274 | __le16 protection_mode; |
2275 | __u8 supp_rates[MWL8K_RATE_INDEX_MAX_ARRAY]; | |
2276 | } __attribute__((packed)); | |
2277 | ||
2278 | static int mwl8k_cmd_set_aid(struct ieee80211_hw *hw, | |
2279 | struct ieee80211_vif *vif) | |
2280 | { | |
2281 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2282 | struct ieee80211_bss_conf *info = &mv_vif->bss_info; | |
2283 | struct mwl8k_cmd_update_set_aid *cmd; | |
2284 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
2285 | int count; | |
2286 | u16 prot_mode; | |
2287 | int rc; | |
2288 | ||
2289 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2290 | if (cmd == NULL) | |
2291 | return -ENOMEM; | |
2292 | ||
2293 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); | |
2294 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2295 | cmd->aid = cpu_to_le16(info->aid); | |
2296 | ||
d89173f2 | 2297 | memcpy(cmd->bssid, mv_vif->bssid, ETH_ALEN); |
a66098da | 2298 | |
a66098da LB |
2299 | if (info->use_cts_prot) { |
2300 | prot_mode = MWL8K_FRAME_PROT_11G; | |
2301 | } else { | |
9ed6bcce | 2302 | switch (info->ht_operation_mode & |
a66098da LB |
2303 | IEEE80211_HT_OP_MODE_PROTECTION) { |
2304 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
2305 | prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; | |
2306 | break; | |
2307 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
2308 | prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; | |
2309 | break; | |
2310 | default: | |
2311 | prot_mode = MWL8K_FRAME_PROT_DISABLED; | |
2312 | break; | |
2313 | } | |
2314 | } | |
a66098da LB |
2315 | cmd->protection_mode = cpu_to_le16(prot_mode); |
2316 | ||
2317 | for (count = 0; count < mv_vif->legacy_nrates; count++) | |
2318 | cmd->supp_rates[count] = bitrates[count].hw_value; | |
2319 | ||
2320 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2321 | kfree(cmd); | |
2322 | ||
2323 | return rc; | |
2324 | } | |
2325 | ||
2326 | /* | |
2327 | * CMD_SET_RATE. | |
2328 | */ | |
2329 | struct mwl8k_cmd_update_rateset { | |
2330 | struct mwl8k_cmd_pkt header; | |
2331 | __u8 legacy_rates[MWL8K_RATE_INDEX_MAX_ARRAY]; | |
2332 | ||
2333 | /* Bitmap for supported MCS codes. */ | |
2334 | __u8 mcs_set[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
2335 | __u8 reserved[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
2336 | } __attribute__((packed)); | |
2337 | ||
2338 | static int mwl8k_update_rateset(struct ieee80211_hw *hw, | |
2339 | struct ieee80211_vif *vif) | |
2340 | { | |
2341 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2342 | struct mwl8k_cmd_update_rateset *cmd; | |
2343 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
2344 | int count; | |
2345 | int rc; | |
2346 | ||
2347 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2348 | if (cmd == NULL) | |
2349 | return -ENOMEM; | |
2350 | ||
2351 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); | |
2352 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2353 | ||
2354 | for (count = 0; count < mv_vif->legacy_nrates; count++) | |
2355 | cmd->legacy_rates[count] = bitrates[count].hw_value; | |
2356 | ||
2357 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2358 | kfree(cmd); | |
2359 | ||
2360 | return rc; | |
2361 | } | |
2362 | ||
2363 | /* | |
2364 | * CMD_USE_FIXED_RATE. | |
2365 | */ | |
2366 | #define MWL8K_RATE_TABLE_SIZE 8 | |
2367 | #define MWL8K_UCAST_RATE 0 | |
a66098da LB |
2368 | #define MWL8K_USE_AUTO_RATE 0x0002 |
2369 | ||
2370 | struct mwl8k_rate_entry { | |
2371 | /* Set to 1 if HT rate, 0 if legacy. */ | |
2372 | __le32 is_ht_rate; | |
2373 | ||
2374 | /* Set to 1 to use retry_count field. */ | |
2375 | __le32 enable_retry; | |
2376 | ||
2377 | /* Specified legacy rate or MCS. */ | |
2378 | __le32 rate; | |
2379 | ||
2380 | /* Number of allowed retries. */ | |
2381 | __le32 retry_count; | |
2382 | } __attribute__((packed)); | |
2383 | ||
2384 | struct mwl8k_rate_table { | |
2385 | /* 1 to allow specified rate and below */ | |
2386 | __le32 allow_rate_drop; | |
2387 | __le32 num_rates; | |
2388 | struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE]; | |
2389 | } __attribute__((packed)); | |
2390 | ||
2391 | struct mwl8k_cmd_use_fixed_rate { | |
2392 | struct mwl8k_cmd_pkt header; | |
2393 | __le32 action; | |
2394 | struct mwl8k_rate_table rate_table; | |
2395 | ||
2396 | /* Unicast, Broadcast or Multicast */ | |
2397 | __le32 rate_type; | |
2398 | __le32 reserved1; | |
2399 | __le32 reserved2; | |
2400 | } __attribute__((packed)); | |
2401 | ||
2402 | static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw, | |
2403 | u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table) | |
2404 | { | |
2405 | struct mwl8k_cmd_use_fixed_rate *cmd; | |
2406 | int count; | |
2407 | int rc; | |
2408 | ||
2409 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2410 | if (cmd == NULL) | |
2411 | return -ENOMEM; | |
2412 | ||
2413 | cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); | |
2414 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2415 | ||
2416 | cmd->action = cpu_to_le32(action); | |
2417 | cmd->rate_type = cpu_to_le32(rate_type); | |
2418 | ||
2419 | if (rate_table != NULL) { | |
2420 | /* Copy over each field manually so | |
2421 | * that bitflipping can be done | |
2422 | */ | |
2423 | cmd->rate_table.allow_rate_drop = | |
2424 | cpu_to_le32(rate_table->allow_rate_drop); | |
2425 | cmd->rate_table.num_rates = | |
2426 | cpu_to_le32(rate_table->num_rates); | |
2427 | ||
2428 | for (count = 0; count < rate_table->num_rates; count++) { | |
2429 | struct mwl8k_rate_entry *dst = | |
2430 | &cmd->rate_table.rate_entry[count]; | |
2431 | struct mwl8k_rate_entry *src = | |
2432 | &rate_table->rate_entry[count]; | |
2433 | ||
2434 | dst->is_ht_rate = cpu_to_le32(src->is_ht_rate); | |
2435 | dst->enable_retry = cpu_to_le32(src->enable_retry); | |
2436 | dst->rate = cpu_to_le32(src->rate); | |
2437 | dst->retry_count = cpu_to_le32(src->retry_count); | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2442 | kfree(cmd); | |
2443 | ||
2444 | return rc; | |
2445 | } | |
2446 | ||
2447 | ||
2448 | /* | |
2449 | * Interrupt handling. | |
2450 | */ | |
2451 | static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) | |
2452 | { | |
2453 | struct ieee80211_hw *hw = dev_id; | |
2454 | struct mwl8k_priv *priv = hw->priv; | |
2455 | u32 status; | |
2456 | ||
2457 | status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
2458 | iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
2459 | ||
a66098da LB |
2460 | if (!status) |
2461 | return IRQ_NONE; | |
2462 | ||
2463 | if (status & MWL8K_A2H_INT_TX_DONE) | |
2464 | tasklet_schedule(&priv->tx_reclaim_task); | |
2465 | ||
2466 | if (status & MWL8K_A2H_INT_RX_READY) { | |
2467 | while (rxq_process(hw, 0, 1)) | |
2468 | rxq_refill(hw, 0, 1); | |
2469 | } | |
2470 | ||
2471 | if (status & MWL8K_A2H_INT_OPC_DONE) { | |
2472 | if (priv->hostcmd_wait != NULL) { | |
2473 | complete(priv->hostcmd_wait); | |
2474 | priv->hostcmd_wait = NULL; | |
2475 | } | |
2476 | } | |
2477 | ||
2478 | if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { | |
2479 | if (!priv->inconfig && | |
c46563b7 | 2480 | priv->radio_on && |
a66098da LB |
2481 | mwl8k_txq_busy(priv)) |
2482 | mwl8k_tx_start(priv); | |
2483 | } | |
2484 | ||
2485 | return IRQ_HANDLED; | |
2486 | } | |
2487 | ||
2488 | ||
2489 | /* | |
2490 | * Core driver operations. | |
2491 | */ | |
2492 | static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) | |
2493 | { | |
2494 | struct mwl8k_priv *priv = hw->priv; | |
2495 | int index = skb_get_queue_mapping(skb); | |
2496 | int rc; | |
2497 | ||
2498 | if (priv->current_channel == NULL) { | |
2499 | printk(KERN_DEBUG "%s: dropped TX frame since radio " | |
2500 | "disabled\n", priv->name); | |
2501 | dev_kfree_skb(skb); | |
2502 | return NETDEV_TX_OK; | |
2503 | } | |
2504 | ||
2505 | rc = mwl8k_txq_xmit(hw, index, skb); | |
2506 | ||
2507 | return rc; | |
2508 | } | |
2509 | ||
2510 | struct mwl8k_work_struct { | |
2511 | /* Initialized by mwl8k_queue_work(). */ | |
2512 | struct work_struct wt; | |
2513 | ||
2514 | /* Required field passed in to mwl8k_queue_work(). */ | |
2515 | struct ieee80211_hw *hw; | |
2516 | ||
2517 | /* Required field passed in to mwl8k_queue_work(). */ | |
2518 | int (*wfunc)(struct work_struct *w); | |
2519 | ||
2520 | /* Initialized by mwl8k_queue_work(). */ | |
2521 | struct completion *cmd_wait; | |
2522 | ||
2523 | /* Result code. */ | |
2524 | int rc; | |
2525 | ||
2526 | /* | |
2527 | * Optional field. Refer to explanation of MWL8K_WQ_XXX_XXX | |
2528 | * flags for explanation. Defaults to MWL8K_WQ_DEFAULT_OPTIONS. | |
2529 | */ | |
2530 | u32 options; | |
2531 | ||
2532 | /* Optional field. Defaults to MWL8K_CONFIG_TIMEOUT_MS. */ | |
2533 | unsigned long timeout_ms; | |
2534 | ||
2535 | /* Optional field. Defaults to MWL8K_WQ_TXWAIT_ATTEMPTS. */ | |
2536 | u32 txwait_attempts; | |
2537 | ||
2538 | /* Optional field. Defaults to MWL8K_TXWAIT_MS. */ | |
2539 | u32 tx_timeout_ms; | |
2540 | u32 step; | |
2541 | }; | |
2542 | ||
2543 | /* Flags controlling behavior of config queue requests */ | |
2544 | ||
2545 | /* Caller spins while waiting for completion. */ | |
2546 | #define MWL8K_WQ_SPIN 0x00000001 | |
2547 | ||
2548 | /* Wait for TX queues to empty before proceeding with configuration. */ | |
2549 | #define MWL8K_WQ_TX_WAIT_EMPTY 0x00000002 | |
2550 | ||
2551 | /* Queue request and return immediately. */ | |
2552 | #define MWL8K_WQ_POST_REQUEST 0x00000004 | |
2553 | ||
2554 | /* | |
2555 | * Caller sleeps and waits for task complete notification. | |
2556 | * Do not use in atomic context. | |
2557 | */ | |
2558 | #define MWL8K_WQ_SLEEP 0x00000008 | |
2559 | ||
2560 | /* Free work struct when task is done. */ | |
2561 | #define MWL8K_WQ_FREE_WORKSTRUCT 0x00000010 | |
2562 | ||
2563 | /* | |
2564 | * Config request is queued and returns to caller imediately. Use | |
2565 | * this in atomic context. Work struct is freed by mwl8k_queue_work() | |
2566 | * when this flag is set. | |
2567 | */ | |
2568 | #define MWL8K_WQ_QUEUE_ONLY (MWL8K_WQ_POST_REQUEST | \ | |
2569 | MWL8K_WQ_FREE_WORKSTRUCT) | |
2570 | ||
2571 | /* Default work queue behavior is to sleep and wait for tx completion. */ | |
2572 | #define MWL8K_WQ_DEFAULT_OPTIONS (MWL8K_WQ_SLEEP | MWL8K_WQ_TX_WAIT_EMPTY) | |
2573 | ||
2574 | /* | |
2575 | * Default config request timeout. Add adjustments to make sure the | |
2576 | * config thread waits long enough for both tx wait and cmd wait before | |
2577 | * timing out. | |
2578 | */ | |
2579 | ||
2580 | /* Time to wait for all TXQs to drain. TX Doorbell is pressed each time. */ | |
2581 | #define MWL8K_TXWAIT_TIMEOUT_MS 1000 | |
2582 | ||
2583 | /* Default number of TX wait attempts. */ | |
2584 | #define MWL8K_WQ_TXWAIT_ATTEMPTS 4 | |
2585 | ||
2586 | /* Total time to wait for TXQ to drain. */ | |
2587 | #define MWL8K_TXWAIT_MS (MWL8K_TXWAIT_TIMEOUT_MS * \ | |
2588 | MWL8K_WQ_TXWAIT_ATTEMPTS) | |
2589 | ||
2590 | /* Scheduling slop. */ | |
2591 | #define MWL8K_OS_SCHEDULE_OVERHEAD_MS 200 | |
2592 | ||
2593 | #define MWL8K_CONFIG_TIMEOUT_MS (MWL8K_CMD_TIMEOUT_MS + \ | |
2594 | MWL8K_TXWAIT_MS + \ | |
2595 | MWL8K_OS_SCHEDULE_OVERHEAD_MS) | |
2596 | ||
2597 | static void mwl8k_config_thread(struct work_struct *wt) | |
2598 | { | |
2599 | struct mwl8k_work_struct *worker = (struct mwl8k_work_struct *)wt; | |
2600 | struct ieee80211_hw *hw = worker->hw; | |
2601 | struct mwl8k_priv *priv = hw->priv; | |
2602 | int rc = 0; | |
2603 | ||
2604 | spin_lock_irq(&priv->tx_lock); | |
2605 | priv->inconfig = true; | |
2606 | spin_unlock_irq(&priv->tx_lock); | |
2607 | ||
2608 | ieee80211_stop_queues(hw); | |
2609 | ||
2610 | /* | |
2611 | * Wait for host queues to drain before doing PHY | |
2612 | * reconfiguration. This avoids interrupting any in-flight | |
2613 | * DMA transfers to the hardware. | |
2614 | */ | |
2615 | if (worker->options & MWL8K_WQ_TX_WAIT_EMPTY) { | |
2616 | u32 timeout; | |
2617 | u32 time_remaining; | |
2618 | u32 iter; | |
2619 | u32 tx_wait_attempts = worker->txwait_attempts; | |
2620 | ||
2621 | time_remaining = worker->tx_timeout_ms; | |
2622 | if (!tx_wait_attempts) | |
2623 | tx_wait_attempts = 1; | |
2624 | ||
2625 | timeout = worker->tx_timeout_ms/tx_wait_attempts; | |
2626 | if (!timeout) | |
2627 | timeout = 1; | |
2628 | ||
2629 | iter = tx_wait_attempts; | |
2630 | do { | |
2631 | int wait_time; | |
2632 | ||
2633 | if (time_remaining > timeout) { | |
2634 | time_remaining -= timeout; | |
2635 | wait_time = timeout; | |
2636 | } else | |
2637 | wait_time = time_remaining; | |
2638 | ||
2639 | if (!wait_time) | |
2640 | wait_time = 1; | |
2641 | ||
2642 | rc = mwl8k_tx_wait_empty(hw, wait_time); | |
2643 | if (rc) | |
2644 | printk(KERN_ERR "%s() txwait timeout=%ums " | |
2645 | "Retry:%u/%u\n", __func__, timeout, | |
2646 | tx_wait_attempts - iter + 1, | |
2647 | tx_wait_attempts); | |
2648 | ||
2649 | } while (rc && --iter); | |
2650 | ||
2651 | rc = iter ? 0 : -ETIMEDOUT; | |
2652 | } | |
2653 | if (!rc) | |
2654 | rc = worker->wfunc(wt); | |
2655 | ||
2656 | spin_lock_irq(&priv->tx_lock); | |
2657 | priv->inconfig = false; | |
c46563b7 | 2658 | if (priv->pending_tx_pkts && priv->radio_on) |
a66098da LB |
2659 | mwl8k_tx_start(priv); |
2660 | spin_unlock_irq(&priv->tx_lock); | |
2661 | ieee80211_wake_queues(hw); | |
2662 | ||
2663 | worker->rc = rc; | |
2664 | if (worker->options & MWL8K_WQ_SLEEP) | |
2665 | complete(worker->cmd_wait); | |
2666 | ||
2667 | if (worker->options & MWL8K_WQ_FREE_WORKSTRUCT) | |
2668 | kfree(wt); | |
2669 | } | |
2670 | ||
2671 | static int mwl8k_queue_work(struct ieee80211_hw *hw, | |
2672 | struct mwl8k_work_struct *worker, | |
2673 | struct workqueue_struct *wqueue, | |
2674 | int (*wfunc)(struct work_struct *w)) | |
2675 | { | |
2676 | unsigned long timeout = 0; | |
2677 | int rc = 0; | |
2678 | ||
2679 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
2680 | ||
2681 | if (!worker->timeout_ms) | |
2682 | worker->timeout_ms = MWL8K_CONFIG_TIMEOUT_MS; | |
2683 | ||
2684 | if (!worker->options) | |
2685 | worker->options = MWL8K_WQ_DEFAULT_OPTIONS; | |
2686 | ||
2687 | if (!worker->txwait_attempts) | |
2688 | worker->txwait_attempts = MWL8K_WQ_TXWAIT_ATTEMPTS; | |
2689 | ||
2690 | if (!worker->tx_timeout_ms) | |
2691 | worker->tx_timeout_ms = MWL8K_TXWAIT_MS; | |
2692 | ||
2693 | worker->hw = hw; | |
2694 | worker->cmd_wait = &cmd_wait; | |
2695 | worker->rc = 1; | |
2696 | worker->wfunc = wfunc; | |
2697 | ||
2698 | INIT_WORK(&worker->wt, mwl8k_config_thread); | |
2699 | queue_work(wqueue, &worker->wt); | |
2700 | ||
2701 | if (worker->options & MWL8K_WQ_POST_REQUEST) { | |
2702 | rc = 0; | |
2703 | } else { | |
2704 | if (worker->options & MWL8K_WQ_SPIN) { | |
2705 | timeout = worker->timeout_ms; | |
2706 | while (timeout && (worker->rc > 0)) { | |
2707 | mdelay(1); | |
2708 | timeout--; | |
2709 | } | |
2710 | } else if (worker->options & MWL8K_WQ_SLEEP) | |
2711 | timeout = wait_for_completion_timeout(&cmd_wait, | |
2712 | msecs_to_jiffies(worker->timeout_ms)); | |
2713 | ||
2714 | if (timeout) | |
2715 | rc = worker->rc; | |
2716 | else { | |
2717 | cancel_work_sync(&worker->wt); | |
2718 | rc = -ETIMEDOUT; | |
2719 | } | |
2720 | } | |
2721 | ||
2722 | return rc; | |
2723 | } | |
2724 | ||
2725 | struct mwl8k_start_worker { | |
2726 | struct mwl8k_work_struct header; | |
2727 | }; | |
2728 | ||
2729 | static int mwl8k_start_wt(struct work_struct *wt) | |
2730 | { | |
2731 | struct mwl8k_start_worker *worker = (struct mwl8k_start_worker *)wt; | |
2732 | struct ieee80211_hw *hw = worker->header.hw; | |
2733 | struct mwl8k_priv *priv = hw->priv; | |
2734 | int rc = 0; | |
2735 | ||
2736 | if (priv->vif != NULL) { | |
2737 | rc = -EIO; | |
2738 | goto mwl8k_start_exit; | |
2739 | } | |
2740 | ||
2741 | /* Turn on radio */ | |
c46563b7 | 2742 | if (mwl8k_cmd_802_11_radio_enable(hw)) { |
a66098da LB |
2743 | rc = -EIO; |
2744 | goto mwl8k_start_exit; | |
2745 | } | |
2746 | ||
2747 | /* Purge TX/RX HW queues */ | |
2748 | if (mwl8k_cmd_set_pre_scan(hw)) { | |
2749 | rc = -EIO; | |
2750 | goto mwl8k_start_exit; | |
2751 | } | |
2752 | ||
2753 | if (mwl8k_cmd_set_post_scan(hw, "\x00\x00\x00\x00\x00\x00")) { | |
2754 | rc = -EIO; | |
2755 | goto mwl8k_start_exit; | |
2756 | } | |
2757 | ||
2758 | /* Enable firmware rate adaptation */ | |
2759 | if (mwl8k_cmd_setrateadaptmode(hw, 0)) { | |
2760 | rc = -EIO; | |
2761 | goto mwl8k_start_exit; | |
2762 | } | |
2763 | ||
2764 | /* Disable WMM. WMM gets enabled when stack sends WMM parms */ | |
2765 | if (mwl8k_set_wmm(hw, MWL8K_WMM_DISABLE)) { | |
2766 | rc = -EIO; | |
2767 | goto mwl8k_start_exit; | |
2768 | } | |
2769 | ||
2770 | /* Disable sniffer mode */ | |
2771 | if (mwl8k_enable_sniffer(hw, 0)) | |
2772 | rc = -EIO; | |
2773 | ||
2774 | mwl8k_start_exit: | |
2775 | return rc; | |
2776 | } | |
2777 | ||
2778 | static int mwl8k_start(struct ieee80211_hw *hw) | |
2779 | { | |
2780 | struct mwl8k_start_worker *worker; | |
2781 | struct mwl8k_priv *priv = hw->priv; | |
2782 | int rc; | |
2783 | ||
2784 | /* Enable tx reclaim tasklet */ | |
2785 | tasklet_enable(&priv->tx_reclaim_task); | |
2786 | ||
2787 | rc = request_irq(priv->pdev->irq, &mwl8k_interrupt, | |
2788 | IRQF_SHARED, MWL8K_NAME, hw); | |
2789 | if (rc) { | |
2790 | printk(KERN_ERR "%s: failed to register IRQ handler\n", | |
2791 | priv->name); | |
2792 | rc = -EIO; | |
2793 | goto mwl8k_start_disable_tasklet; | |
2794 | } | |
2795 | ||
2796 | /* Enable interrupts */ | |
c23b5a69 | 2797 | iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
2798 | |
2799 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2800 | if (worker == NULL) { | |
2801 | rc = -ENOMEM; | |
2802 | goto mwl8k_start_disable_irq; | |
2803 | } | |
2804 | ||
2805 | rc = mwl8k_queue_work(hw, &worker->header, | |
2806 | priv->config_wq, mwl8k_start_wt); | |
2807 | kfree(worker); | |
2808 | if (!rc) | |
2809 | return rc; | |
2810 | ||
2811 | if (rc == -ETIMEDOUT) | |
2812 | printk(KERN_ERR "%s() timed out\n", __func__); | |
2813 | ||
2814 | rc = -EIO; | |
2815 | ||
2816 | mwl8k_start_disable_irq: | |
2817 | spin_lock_irq(&priv->tx_lock); | |
2818 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
2819 | spin_unlock_irq(&priv->tx_lock); | |
2820 | free_irq(priv->pdev->irq, hw); | |
2821 | ||
2822 | mwl8k_start_disable_tasklet: | |
2823 | tasklet_disable(&priv->tx_reclaim_task); | |
2824 | ||
2825 | return rc; | |
2826 | } | |
2827 | ||
2828 | struct mwl8k_stop_worker { | |
2829 | struct mwl8k_work_struct header; | |
2830 | }; | |
2831 | ||
2832 | static int mwl8k_stop_wt(struct work_struct *wt) | |
2833 | { | |
2834 | struct mwl8k_stop_worker *worker = (struct mwl8k_stop_worker *)wt; | |
2835 | struct ieee80211_hw *hw = worker->header.hw; | |
a66098da | 2836 | |
c46563b7 | 2837 | return mwl8k_cmd_802_11_radio_disable(hw); |
a66098da LB |
2838 | } |
2839 | ||
2840 | static void mwl8k_stop(struct ieee80211_hw *hw) | |
2841 | { | |
2842 | int rc; | |
2843 | struct mwl8k_stop_worker *worker; | |
2844 | struct mwl8k_priv *priv = hw->priv; | |
2845 | int i; | |
2846 | ||
2847 | if (priv->vif != NULL) | |
2848 | return; | |
2849 | ||
2850 | ieee80211_stop_queues(hw); | |
2851 | ||
2852 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2853 | if (worker == NULL) | |
2854 | return; | |
2855 | ||
2856 | rc = mwl8k_queue_work(hw, &worker->header, | |
2857 | priv->config_wq, mwl8k_stop_wt); | |
2858 | kfree(worker); | |
2859 | if (rc == -ETIMEDOUT) | |
2860 | printk(KERN_ERR "%s() timed out\n", __func__); | |
2861 | ||
2862 | /* Disable interrupts */ | |
2863 | spin_lock_irq(&priv->tx_lock); | |
2864 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
2865 | spin_unlock_irq(&priv->tx_lock); | |
2866 | free_irq(priv->pdev->irq, hw); | |
2867 | ||
2868 | /* Stop finalize join worker */ | |
2869 | cancel_work_sync(&priv->finalize_join_worker); | |
2870 | if (priv->beacon_skb != NULL) | |
2871 | dev_kfree_skb(priv->beacon_skb); | |
2872 | ||
2873 | /* Stop tx reclaim tasklet */ | |
2874 | tasklet_disable(&priv->tx_reclaim_task); | |
2875 | ||
2876 | /* Stop config thread */ | |
2877 | flush_workqueue(priv->config_wq); | |
2878 | ||
2879 | /* Return all skbs to mac80211 */ | |
2880 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
2881 | mwl8k_txq_reclaim(hw, i, 1); | |
2882 | } | |
2883 | ||
2884 | static int mwl8k_add_interface(struct ieee80211_hw *hw, | |
2885 | struct ieee80211_if_init_conf *conf) | |
2886 | { | |
2887 | struct mwl8k_priv *priv = hw->priv; | |
2888 | struct mwl8k_vif *mwl8k_vif; | |
2889 | ||
2890 | /* | |
2891 | * We only support one active interface at a time. | |
2892 | */ | |
2893 | if (priv->vif != NULL) | |
2894 | return -EBUSY; | |
2895 | ||
2896 | /* | |
2897 | * We only support managed interfaces for now. | |
2898 | */ | |
2899 | if (conf->type != NL80211_IFTYPE_STATION && | |
2900 | conf->type != NL80211_IFTYPE_MONITOR) | |
2901 | return -EINVAL; | |
2902 | ||
2903 | /* Clean out driver private area */ | |
2904 | mwl8k_vif = MWL8K_VIF(conf->vif); | |
2905 | memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); | |
2906 | ||
2907 | /* Save the mac address */ | |
d89173f2 | 2908 | memcpy(mwl8k_vif->mac_addr, conf->mac_addr, ETH_ALEN); |
a66098da LB |
2909 | |
2910 | /* Back pointer to parent config block */ | |
2911 | mwl8k_vif->priv = priv; | |
2912 | ||
2913 | /* Setup initial PHY parameters */ | |
ce9e2e1b | 2914 | memcpy(mwl8k_vif->legacy_rates, |
a66098da LB |
2915 | priv->rates, sizeof(mwl8k_vif->legacy_rates)); |
2916 | mwl8k_vif->legacy_nrates = ARRAY_SIZE(priv->rates); | |
2917 | ||
2918 | /* Set Initial sequence number to zero */ | |
2919 | mwl8k_vif->seqno = 0; | |
2920 | ||
2921 | priv->vif = conf->vif; | |
2922 | priv->current_channel = NULL; | |
2923 | ||
2924 | return 0; | |
2925 | } | |
2926 | ||
2927 | static void mwl8k_remove_interface(struct ieee80211_hw *hw, | |
2928 | struct ieee80211_if_init_conf *conf) | |
2929 | { | |
2930 | struct mwl8k_priv *priv = hw->priv; | |
2931 | ||
2932 | if (priv->vif == NULL) | |
2933 | return; | |
2934 | ||
2935 | priv->vif = NULL; | |
2936 | } | |
2937 | ||
2938 | struct mwl8k_config_worker { | |
2939 | struct mwl8k_work_struct header; | |
2940 | u32 changed; | |
2941 | }; | |
2942 | ||
2943 | static int mwl8k_config_wt(struct work_struct *wt) | |
2944 | { | |
2945 | struct mwl8k_config_worker *worker = | |
2946 | (struct mwl8k_config_worker *)wt; | |
2947 | struct ieee80211_hw *hw = worker->header.hw; | |
2948 | struct ieee80211_conf *conf = &hw->conf; | |
2949 | struct mwl8k_priv *priv = hw->priv; | |
2950 | int rc = 0; | |
2951 | ||
c46563b7 | 2952 | if (mwl8k_cmd_802_11_radio_enable(hw)) { |
a66098da LB |
2953 | rc = -EINVAL; |
2954 | goto mwl8k_config_exit; | |
2955 | } | |
2956 | ||
2957 | priv->current_channel = conf->channel; | |
2958 | ||
2959 | if (mwl8k_cmd_set_rf_channel(hw, conf->channel)) { | |
2960 | rc = -EINVAL; | |
2961 | goto mwl8k_config_exit; | |
2962 | } | |
2963 | ||
2964 | if (conf->power_level > 18) | |
2965 | conf->power_level = 18; | |
2966 | if (mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level)) { | |
2967 | rc = -EINVAL; | |
2968 | goto mwl8k_config_exit; | |
2969 | } | |
2970 | ||
2971 | if (mwl8k_cmd_mimo_config(hw, 0x7, 0x7)) | |
2972 | rc = -EINVAL; | |
2973 | ||
2974 | mwl8k_config_exit: | |
2975 | return rc; | |
2976 | } | |
2977 | ||
2978 | static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) | |
2979 | { | |
2980 | int rc = 0; | |
2981 | struct mwl8k_config_worker *worker; | |
2982 | struct mwl8k_priv *priv = hw->priv; | |
2983 | ||
2984 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2985 | if (worker == NULL) | |
2986 | return -ENOMEM; | |
2987 | ||
2988 | worker->changed = changed; | |
2989 | rc = mwl8k_queue_work(hw, &worker->header, | |
2990 | priv->config_wq, mwl8k_config_wt); | |
2991 | if (rc == -ETIMEDOUT) { | |
2992 | printk(KERN_ERR "%s() timed out.\n", __func__); | |
2993 | rc = -EINVAL; | |
2994 | } | |
2995 | ||
2996 | kfree(worker); | |
2997 | ||
2998 | /* | |
2999 | * mac80211 will crash on anything other than -EINVAL on | |
3000 | * error. Looks like wireless extensions which calls mac80211 | |
3001 | * may be the actual culprit... | |
3002 | */ | |
3003 | return rc ? -EINVAL : 0; | |
3004 | } | |
3005 | ||
a66098da LB |
3006 | struct mwl8k_bss_info_changed_worker { |
3007 | struct mwl8k_work_struct header; | |
3008 | struct ieee80211_vif *vif; | |
3009 | struct ieee80211_bss_conf *info; | |
3010 | u32 changed; | |
3011 | }; | |
3012 | ||
3013 | static int mwl8k_bss_info_changed_wt(struct work_struct *wt) | |
3014 | { | |
3015 | struct mwl8k_bss_info_changed_worker *worker = | |
3016 | (struct mwl8k_bss_info_changed_worker *)wt; | |
3017 | struct ieee80211_hw *hw = worker->header.hw; | |
3018 | struct ieee80211_vif *vif = worker->vif; | |
3019 | struct ieee80211_bss_conf *info = worker->info; | |
3020 | u32 changed; | |
3021 | int rc; | |
3022 | ||
3023 | struct mwl8k_priv *priv = hw->priv; | |
3024 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
3025 | ||
3026 | changed = worker->changed; | |
3027 | priv->capture_beacon = false; | |
3028 | ||
3029 | if (info->assoc) { | |
3030 | memcpy(&mwl8k_vif->bss_info, info, | |
3031 | sizeof(struct ieee80211_bss_conf)); | |
3032 | ||
3033 | /* Install rates */ | |
3034 | if (mwl8k_update_rateset(hw, vif)) | |
3035 | goto mwl8k_bss_info_changed_exit; | |
3036 | ||
3037 | /* Turn on rate adaptation */ | |
3038 | if (mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE, | |
3039 | MWL8K_UCAST_RATE, NULL)) | |
3040 | goto mwl8k_bss_info_changed_exit; | |
3041 | ||
3042 | /* Set radio preamble */ | |
68ce3884 | 3043 | if (mwl8k_set_radio_preamble(hw, info->use_short_preamble)) |
a66098da LB |
3044 | goto mwl8k_bss_info_changed_exit; |
3045 | ||
3046 | /* Set slot time */ | |
3047 | if (mwl8k_cmd_set_slot(hw, info->use_short_slot ? | |
3048 | MWL8K_SHORT_SLOTTIME : MWL8K_LONG_SLOTTIME)) | |
3049 | goto mwl8k_bss_info_changed_exit; | |
3050 | ||
3051 | /* Update peer rate info */ | |
3052 | if (mwl8k_cmd_update_sta_db(hw, vif, | |
3053 | MWL8K_STA_DB_MODIFY_ENTRY)) | |
3054 | goto mwl8k_bss_info_changed_exit; | |
3055 | ||
3056 | /* Set AID */ | |
3057 | if (mwl8k_cmd_set_aid(hw, vif)) | |
3058 | goto mwl8k_bss_info_changed_exit; | |
3059 | ||
3060 | /* | |
3061 | * Finalize the join. Tell rx handler to process | |
3062 | * next beacon from our BSSID. | |
3063 | */ | |
d89173f2 | 3064 | memcpy(priv->capture_bssid, mwl8k_vif->bssid, ETH_ALEN); |
a66098da LB |
3065 | priv->capture_beacon = true; |
3066 | } else { | |
3067 | mwl8k_cmd_update_sta_db(hw, vif, MWL8K_STA_DB_DEL_ENTRY); | |
3068 | memset(&mwl8k_vif->bss_info, 0, | |
3069 | sizeof(struct ieee80211_bss_conf)); | |
d89173f2 | 3070 | memset(mwl8k_vif->bssid, 0, ETH_ALEN); |
a66098da LB |
3071 | } |
3072 | ||
3073 | mwl8k_bss_info_changed_exit: | |
3074 | rc = 0; | |
3075 | return rc; | |
3076 | } | |
3077 | ||
3078 | static void mwl8k_bss_info_changed(struct ieee80211_hw *hw, | |
3079 | struct ieee80211_vif *vif, | |
3080 | struct ieee80211_bss_conf *info, | |
3081 | u32 changed) | |
3082 | { | |
3083 | struct mwl8k_bss_info_changed_worker *worker; | |
3084 | struct mwl8k_priv *priv = hw->priv; | |
2d0ddec5 | 3085 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); |
a66098da LB |
3086 | int rc; |
3087 | ||
2d0ddec5 | 3088 | if (changed & BSS_CHANGED_BSSID) |
d89173f2 | 3089 | memcpy(mv_vif->bssid, info->bssid, ETH_ALEN); |
2d0ddec5 | 3090 | |
a66098da LB |
3091 | if ((changed & BSS_CHANGED_ASSOC) == 0) |
3092 | return; | |
3093 | ||
3094 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3095 | if (worker == NULL) | |
3096 | return; | |
3097 | ||
3098 | worker->vif = vif; | |
3099 | worker->info = info; | |
3100 | worker->changed = changed; | |
3101 | rc = mwl8k_queue_work(hw, &worker->header, | |
3102 | priv->config_wq, | |
3103 | mwl8k_bss_info_changed_wt); | |
3104 | kfree(worker); | |
3105 | if (rc == -ETIMEDOUT) | |
3106 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3107 | } | |
3108 | ||
3109 | struct mwl8k_configure_filter_worker { | |
3110 | struct mwl8k_work_struct header; | |
3111 | unsigned int changed_flags; | |
3112 | unsigned int *total_flags; | |
3113 | int mc_count; | |
3114 | struct dev_addr_list *mclist; | |
3115 | }; | |
3116 | ||
3117 | #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC | |
3118 | ||
3119 | static int mwl8k_configure_filter_wt(struct work_struct *wt) | |
3120 | { | |
3121 | struct mwl8k_configure_filter_worker *worker = | |
3122 | (struct mwl8k_configure_filter_worker *)wt; | |
3123 | ||
3124 | struct ieee80211_hw *hw = worker->header.hw; | |
3125 | unsigned int changed_flags = worker->changed_flags; | |
3126 | unsigned int *total_flags = worker->total_flags; | |
3127 | int mc_count = worker->mc_count; | |
3128 | struct dev_addr_list *mclist = worker->mclist; | |
3129 | ||
3130 | struct mwl8k_priv *priv = hw->priv; | |
a66098da LB |
3131 | int rc = 0; |
3132 | ||
3133 | if (changed_flags & FIF_BCN_PRBRESP_PROMISC) { | |
3134 | if (*total_flags & FIF_BCN_PRBRESP_PROMISC) | |
3135 | rc = mwl8k_cmd_set_pre_scan(hw); | |
3136 | else { | |
a94cc97e LB |
3137 | u8 *bssid; |
3138 | ||
3139 | bssid = "\x00\x00\x00\x00\x00\x00"; | |
3140 | if (priv->vif != NULL) | |
3141 | bssid = MWL8K_VIF(priv->vif)->bssid; | |
3142 | ||
3143 | rc = mwl8k_cmd_set_post_scan(hw, bssid); | |
a66098da LB |
3144 | } |
3145 | } | |
3146 | ||
3147 | if (rc) | |
3148 | goto mwl8k_configure_filter_exit; | |
3149 | if (mc_count) { | |
ce9e2e1b LB |
3150 | if (mc_count > priv->num_mcaddrs) |
3151 | mc_count = priv->num_mcaddrs; | |
3152 | ||
a66098da LB |
3153 | rc = mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist); |
3154 | if (rc) | |
3155 | printk(KERN_ERR | |
3156 | "%s()Error setting multicast addresses\n", | |
3157 | __func__); | |
3158 | } | |
3159 | ||
3160 | mwl8k_configure_filter_exit: | |
3161 | return rc; | |
3162 | } | |
3163 | ||
3ac64bee JB |
3164 | static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, |
3165 | int mc_count, struct dev_addr_list *mclist) | |
3166 | { | |
3167 | struct mwl8k_configure_filter_worker *worker; | |
3168 | ||
3169 | worker = kzalloc(sizeof(*worker), GFP_ATOMIC); | |
3170 | ||
3171 | if (!worker) | |
3172 | return 0; | |
3173 | ||
3174 | /* | |
3175 | * XXX: This is _HORRIBLY_ broken!! | |
3176 | * | |
3177 | * No locking, the mclist pointer might be invalid as soon as this | |
3178 | * function returns, something in the list might be invalidated | |
3179 | * once we get to the worker, etc... | |
3180 | */ | |
3181 | worker->mc_count = mc_count; | |
3182 | worker->mclist = mclist; | |
3183 | ||
3184 | return (u64)worker; | |
3185 | } | |
3186 | ||
a66098da LB |
3187 | static void mwl8k_configure_filter(struct ieee80211_hw *hw, |
3188 | unsigned int changed_flags, | |
3189 | unsigned int *total_flags, | |
3ac64bee | 3190 | u64 multicast) |
a66098da LB |
3191 | { |
3192 | ||
3ac64bee | 3193 | struct mwl8k_configure_filter_worker *worker = (void *)multicast; |
a66098da LB |
3194 | struct mwl8k_priv *priv = hw->priv; |
3195 | ||
3196 | /* Clear unsupported feature flags */ | |
3197 | *total_flags &= MWL8K_SUPPORTED_IF_FLAGS; | |
3198 | ||
3ac64bee | 3199 | if (!(changed_flags & MWL8K_SUPPORTED_IF_FLAGS)) |
a66098da LB |
3200 | return; |
3201 | ||
a66098da LB |
3202 | if (worker == NULL) |
3203 | return; | |
3204 | ||
3205 | worker->header.options = MWL8K_WQ_QUEUE_ONLY | MWL8K_WQ_TX_WAIT_EMPTY; | |
3206 | worker->changed_flags = changed_flags; | |
3207 | worker->total_flags = total_flags; | |
a66098da LB |
3208 | |
3209 | mwl8k_queue_work(hw, &worker->header, priv->config_wq, | |
3210 | mwl8k_configure_filter_wt); | |
3211 | } | |
3212 | ||
3213 | struct mwl8k_set_rts_threshold_worker { | |
3214 | struct mwl8k_work_struct header; | |
3215 | u32 value; | |
3216 | }; | |
3217 | ||
3218 | static int mwl8k_set_rts_threshold_wt(struct work_struct *wt) | |
3219 | { | |
3220 | struct mwl8k_set_rts_threshold_worker *worker = | |
3221 | (struct mwl8k_set_rts_threshold_worker *)wt; | |
3222 | ||
3223 | struct ieee80211_hw *hw = worker->header.hw; | |
3224 | u16 threshold = (u16)(worker->value); | |
3225 | int rc; | |
3226 | ||
3227 | rc = mwl8k_rts_threshold(hw, MWL8K_CMD_SET, &threshold); | |
3228 | ||
3229 | return rc; | |
3230 | } | |
3231 | ||
3232 | static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
3233 | { | |
3234 | int rc; | |
3235 | struct mwl8k_set_rts_threshold_worker *worker; | |
3236 | struct mwl8k_priv *priv = hw->priv; | |
3237 | ||
3238 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3239 | if (worker == NULL) | |
3240 | return -ENOMEM; | |
3241 | ||
3242 | worker->value = value; | |
3243 | ||
3244 | rc = mwl8k_queue_work(hw, &worker->header, | |
3245 | priv->config_wq, | |
3246 | mwl8k_set_rts_threshold_wt); | |
3247 | kfree(worker); | |
3248 | ||
3249 | if (rc == -ETIMEDOUT) { | |
3250 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3251 | rc = -EINVAL; | |
3252 | } | |
3253 | ||
3254 | return rc; | |
3255 | } | |
3256 | ||
3257 | struct mwl8k_conf_tx_worker { | |
3258 | struct mwl8k_work_struct header; | |
3259 | u16 queue; | |
3260 | const struct ieee80211_tx_queue_params *params; | |
3261 | }; | |
3262 | ||
3263 | static int mwl8k_conf_tx_wt(struct work_struct *wt) | |
3264 | { | |
3265 | struct mwl8k_conf_tx_worker *worker = | |
3266 | (struct mwl8k_conf_tx_worker *)wt; | |
3267 | ||
3268 | struct ieee80211_hw *hw = worker->header.hw; | |
3269 | u16 queue = worker->queue; | |
3270 | const struct ieee80211_tx_queue_params *params = worker->params; | |
3271 | ||
3272 | struct mwl8k_priv *priv = hw->priv; | |
3273 | int rc = 0; | |
3274 | ||
3275 | if (priv->wmm_mode == MWL8K_WMM_DISABLE) | |
3276 | if (mwl8k_set_wmm(hw, MWL8K_WMM_ENABLE)) { | |
3277 | rc = -EINVAL; | |
3278 | goto mwl8k_conf_tx_exit; | |
3279 | } | |
3280 | ||
3281 | if (mwl8k_set_edca_params(hw, GET_TXQ(queue), params->cw_min, | |
3282 | params->cw_max, params->aifs, params->txop)) | |
3283 | rc = -EINVAL; | |
3284 | mwl8k_conf_tx_exit: | |
3285 | return rc; | |
3286 | } | |
3287 | ||
3288 | static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue, | |
3289 | const struct ieee80211_tx_queue_params *params) | |
3290 | { | |
3291 | int rc; | |
3292 | struct mwl8k_conf_tx_worker *worker; | |
3293 | struct mwl8k_priv *priv = hw->priv; | |
3294 | ||
3295 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3296 | if (worker == NULL) | |
3297 | return -ENOMEM; | |
3298 | ||
3299 | worker->queue = queue; | |
3300 | worker->params = params; | |
3301 | rc = mwl8k_queue_work(hw, &worker->header, | |
3302 | priv->config_wq, mwl8k_conf_tx_wt); | |
3303 | kfree(worker); | |
3304 | if (rc == -ETIMEDOUT) { | |
3305 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3306 | rc = -EINVAL; | |
3307 | } | |
3308 | return rc; | |
3309 | } | |
3310 | ||
3311 | static int mwl8k_get_tx_stats(struct ieee80211_hw *hw, | |
3312 | struct ieee80211_tx_queue_stats *stats) | |
3313 | { | |
3314 | struct mwl8k_priv *priv = hw->priv; | |
3315 | struct mwl8k_tx_queue *txq; | |
3316 | int index; | |
3317 | ||
3318 | spin_lock_bh(&priv->tx_lock); | |
3319 | for (index = 0; index < MWL8K_TX_QUEUES; index++) { | |
3320 | txq = priv->txq + index; | |
3321 | memcpy(&stats[index], &txq->tx_stats, | |
3322 | sizeof(struct ieee80211_tx_queue_stats)); | |
3323 | } | |
3324 | spin_unlock_bh(&priv->tx_lock); | |
3325 | return 0; | |
3326 | } | |
3327 | ||
3328 | struct mwl8k_get_stats_worker { | |
3329 | struct mwl8k_work_struct header; | |
3330 | struct ieee80211_low_level_stats *stats; | |
3331 | }; | |
3332 | ||
3333 | static int mwl8k_get_stats_wt(struct work_struct *wt) | |
3334 | { | |
3335 | struct mwl8k_get_stats_worker *worker = | |
3336 | (struct mwl8k_get_stats_worker *)wt; | |
3337 | ||
3338 | return mwl8k_cmd_802_11_get_stat(worker->header.hw, worker->stats); | |
3339 | } | |
3340 | ||
3341 | static int mwl8k_get_stats(struct ieee80211_hw *hw, | |
3342 | struct ieee80211_low_level_stats *stats) | |
3343 | { | |
3344 | int rc; | |
3345 | struct mwl8k_get_stats_worker *worker; | |
3346 | struct mwl8k_priv *priv = hw->priv; | |
3347 | ||
3348 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3349 | if (worker == NULL) | |
3350 | return -ENOMEM; | |
3351 | ||
3352 | worker->stats = stats; | |
3353 | rc = mwl8k_queue_work(hw, &worker->header, | |
3354 | priv->config_wq, mwl8k_get_stats_wt); | |
3355 | ||
3356 | kfree(worker); | |
3357 | if (rc == -ETIMEDOUT) { | |
3358 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3359 | rc = -EINVAL; | |
3360 | } | |
3361 | ||
3362 | return rc; | |
3363 | } | |
3364 | ||
3365 | static const struct ieee80211_ops mwl8k_ops = { | |
3366 | .tx = mwl8k_tx, | |
3367 | .start = mwl8k_start, | |
3368 | .stop = mwl8k_stop, | |
3369 | .add_interface = mwl8k_add_interface, | |
3370 | .remove_interface = mwl8k_remove_interface, | |
3371 | .config = mwl8k_config, | |
a66098da | 3372 | .bss_info_changed = mwl8k_bss_info_changed, |
3ac64bee | 3373 | .prepare_multicast = mwl8k_prepare_multicast, |
a66098da LB |
3374 | .configure_filter = mwl8k_configure_filter, |
3375 | .set_rts_threshold = mwl8k_set_rts_threshold, | |
3376 | .conf_tx = mwl8k_conf_tx, | |
3377 | .get_tx_stats = mwl8k_get_tx_stats, | |
3378 | .get_stats = mwl8k_get_stats, | |
3379 | }; | |
3380 | ||
3381 | static void mwl8k_tx_reclaim_handler(unsigned long data) | |
3382 | { | |
3383 | int i; | |
3384 | struct ieee80211_hw *hw = (struct ieee80211_hw *) data; | |
3385 | struct mwl8k_priv *priv = hw->priv; | |
3386 | ||
3387 | spin_lock_bh(&priv->tx_lock); | |
3388 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3389 | mwl8k_txq_reclaim(hw, i, 0); | |
3390 | ||
ce9e2e1b LB |
3391 | if (priv->tx_wait != NULL && mwl8k_txq_busy(priv) == 0) { |
3392 | complete(priv->tx_wait); | |
3393 | priv->tx_wait = NULL; | |
a66098da LB |
3394 | } |
3395 | spin_unlock_bh(&priv->tx_lock); | |
3396 | } | |
3397 | ||
3398 | static void mwl8k_finalize_join_worker(struct work_struct *work) | |
3399 | { | |
3400 | struct mwl8k_priv *priv = | |
3401 | container_of(work, struct mwl8k_priv, finalize_join_worker); | |
3402 | struct sk_buff *skb = priv->beacon_skb; | |
ce9e2e1b | 3403 | u8 dtim = MWL8K_VIF(priv->vif)->bss_info.dtim_period; |
a66098da LB |
3404 | |
3405 | mwl8k_finalize_join(priv->hw, skb->data, skb->len, dtim); | |
3406 | dev_kfree_skb(skb); | |
3407 | ||
3408 | priv->beacon_skb = NULL; | |
3409 | } | |
3410 | ||
3411 | static int __devinit mwl8k_probe(struct pci_dev *pdev, | |
3412 | const struct pci_device_id *id) | |
3413 | { | |
3414 | struct ieee80211_hw *hw; | |
3415 | struct mwl8k_priv *priv; | |
a66098da LB |
3416 | int rc; |
3417 | int i; | |
3418 | u8 *fw; | |
3419 | ||
3420 | rc = pci_enable_device(pdev); | |
3421 | if (rc) { | |
3422 | printk(KERN_ERR "%s: Cannot enable new PCI device\n", | |
3423 | MWL8K_NAME); | |
3424 | return rc; | |
3425 | } | |
3426 | ||
3427 | rc = pci_request_regions(pdev, MWL8K_NAME); | |
3428 | if (rc) { | |
3429 | printk(KERN_ERR "%s: Cannot obtain PCI resources\n", | |
3430 | MWL8K_NAME); | |
3431 | return rc; | |
3432 | } | |
3433 | ||
3434 | pci_set_master(pdev); | |
3435 | ||
3436 | hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); | |
3437 | if (hw == NULL) { | |
3438 | printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); | |
3439 | rc = -ENOMEM; | |
3440 | goto err_free_reg; | |
3441 | } | |
3442 | ||
3443 | priv = hw->priv; | |
3444 | priv->hw = hw; | |
3445 | priv->pdev = pdev; | |
3446 | priv->hostcmd_wait = NULL; | |
3447 | priv->tx_wait = NULL; | |
3448 | priv->inconfig = false; | |
a66098da LB |
3449 | priv->wmm_mode = false; |
3450 | priv->pending_tx_pkts = 0; | |
3451 | strncpy(priv->name, MWL8K_NAME, sizeof(priv->name)); | |
3452 | ||
3453 | spin_lock_init(&priv->fw_lock); | |
3454 | ||
3455 | SET_IEEE80211_DEV(hw, &pdev->dev); | |
3456 | pci_set_drvdata(pdev, hw); | |
3457 | ||
3458 | priv->regs = pci_iomap(pdev, 1, 0x10000); | |
3459 | if (priv->regs == NULL) { | |
3460 | printk(KERN_ERR "%s: Cannot map device memory\n", priv->name); | |
3461 | goto err_iounmap; | |
3462 | } | |
3463 | ||
3464 | memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels)); | |
3465 | priv->band.band = IEEE80211_BAND_2GHZ; | |
3466 | priv->band.channels = priv->channels; | |
3467 | priv->band.n_channels = ARRAY_SIZE(mwl8k_channels); | |
3468 | priv->band.bitrates = priv->rates; | |
3469 | priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates); | |
3470 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; | |
3471 | ||
3472 | BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates)); | |
3473 | memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates)); | |
3474 | ||
3475 | /* | |
3476 | * Extra headroom is the size of the required DMA header | |
3477 | * minus the size of the smallest 802.11 frame (CTS frame). | |
3478 | */ | |
3479 | hw->extra_tx_headroom = | |
3480 | sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); | |
3481 | ||
3482 | hw->channel_change_time = 10; | |
3483 | ||
3484 | hw->queues = MWL8K_TX_QUEUES; | |
3485 | ||
3486 | hw->wiphy->interface_modes = | |
3487 | BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_MONITOR); | |
3488 | ||
3489 | /* Set rssi and noise values to dBm */ | |
ce9e2e1b | 3490 | hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM; |
a66098da LB |
3491 | hw->vif_data_size = sizeof(struct mwl8k_vif); |
3492 | priv->vif = NULL; | |
3493 | ||
3494 | /* Set default radio state and preamble */ | |
c46563b7 | 3495 | priv->radio_on = 0; |
68ce3884 | 3496 | priv->radio_short_preamble = 0; |
a66098da LB |
3497 | |
3498 | /* Finalize join worker */ | |
3499 | INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); | |
3500 | ||
3501 | /* TX reclaim tasklet */ | |
3502 | tasklet_init(&priv->tx_reclaim_task, | |
3503 | mwl8k_tx_reclaim_handler, (unsigned long)hw); | |
3504 | tasklet_disable(&priv->tx_reclaim_task); | |
3505 | ||
3506 | /* Config workthread */ | |
3507 | priv->config_wq = create_singlethread_workqueue("mwl8k_config"); | |
3508 | if (priv->config_wq == NULL) | |
3509 | goto err_iounmap; | |
3510 | ||
3511 | /* Power management cookie */ | |
3512 | priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma); | |
3513 | if (priv->cookie == NULL) | |
3514 | goto err_iounmap; | |
3515 | ||
3516 | rc = mwl8k_rxq_init(hw, 0); | |
3517 | if (rc) | |
3518 | goto err_iounmap; | |
3519 | rxq_refill(hw, 0, INT_MAX); | |
3520 | ||
3521 | spin_lock_init(&priv->tx_lock); | |
3522 | ||
3523 | for (i = 0; i < MWL8K_TX_QUEUES; i++) { | |
3524 | rc = mwl8k_txq_init(hw, i); | |
3525 | if (rc) | |
3526 | goto err_free_queues; | |
3527 | } | |
3528 | ||
3529 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
c23b5a69 | 3530 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
3531 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); |
3532 | iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); | |
3533 | ||
3534 | rc = request_irq(priv->pdev->irq, &mwl8k_interrupt, | |
3535 | IRQF_SHARED, MWL8K_NAME, hw); | |
3536 | if (rc) { | |
3537 | printk(KERN_ERR "%s: failed to register IRQ handler\n", | |
3538 | priv->name); | |
3539 | goto err_free_queues; | |
3540 | } | |
3541 | ||
3542 | /* Reset firmware and hardware */ | |
3543 | mwl8k_hw_reset(priv); | |
3544 | ||
3545 | /* Ask userland hotplug daemon for the device firmware */ | |
3546 | rc = mwl8k_request_firmware(priv, (u32)id->driver_data); | |
3547 | if (rc) { | |
3548 | printk(KERN_ERR "%s: Firmware files not found\n", priv->name); | |
3549 | goto err_free_irq; | |
3550 | } | |
3551 | ||
3552 | /* Load firmware into hardware */ | |
3553 | rc = mwl8k_load_firmware(priv); | |
3554 | if (rc) { | |
3555 | printk(KERN_ERR "%s: Cannot start firmware\n", priv->name); | |
3556 | goto err_stop_firmware; | |
3557 | } | |
3558 | ||
3559 | /* Reclaim memory once firmware is successfully loaded */ | |
3560 | mwl8k_release_firmware(priv); | |
3561 | ||
3562 | /* | |
3563 | * Temporarily enable interrupts. Initial firmware host | |
3564 | * commands use interrupts and avoids polling. Disable | |
3565 | * interrupts when done. | |
3566 | */ | |
c23b5a69 | 3567 | iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
3568 | |
3569 | /* Get config data, mac addrs etc */ | |
3570 | rc = mwl8k_cmd_get_hw_spec(hw); | |
3571 | if (rc) { | |
3572 | printk(KERN_ERR "%s: Cannot initialise firmware\n", priv->name); | |
3573 | goto err_stop_firmware; | |
3574 | } | |
3575 | ||
3576 | /* Turn radio off */ | |
c46563b7 | 3577 | rc = mwl8k_cmd_802_11_radio_disable(hw); |
a66098da LB |
3578 | if (rc) { |
3579 | printk(KERN_ERR "%s: Cannot disable\n", priv->name); | |
3580 | goto err_stop_firmware; | |
3581 | } | |
3582 | ||
3583 | /* Disable interrupts */ | |
3584 | spin_lock_irq(&priv->tx_lock); | |
3585 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
3586 | spin_unlock_irq(&priv->tx_lock); | |
3587 | free_irq(priv->pdev->irq, hw); | |
3588 | ||
3589 | rc = ieee80211_register_hw(hw); | |
3590 | if (rc) { | |
3591 | printk(KERN_ERR "%s: Cannot register device\n", priv->name); | |
3592 | goto err_stop_firmware; | |
3593 | } | |
3594 | ||
3595 | fw = (u8 *)&priv->fw_rev; | |
3596 | printk(KERN_INFO "%s: 88W%u %s\n", priv->name, priv->part_num, | |
3597 | MWL8K_DESC); | |
3598 | printk(KERN_INFO "%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n", | |
3599 | priv->name, MWL8K_VERSION, fw[3], fw[2], fw[1], fw[0]); | |
e91d8334 JB |
3600 | printk(KERN_INFO "%s: MAC Address: %pM\n", priv->name, |
3601 | hw->wiphy->perm_addr); | |
a66098da LB |
3602 | |
3603 | return 0; | |
3604 | ||
3605 | err_stop_firmware: | |
3606 | mwl8k_hw_reset(priv); | |
3607 | mwl8k_release_firmware(priv); | |
3608 | ||
3609 | err_free_irq: | |
3610 | spin_lock_irq(&priv->tx_lock); | |
3611 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
3612 | spin_unlock_irq(&priv->tx_lock); | |
3613 | free_irq(priv->pdev->irq, hw); | |
3614 | ||
3615 | err_free_queues: | |
3616 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3617 | mwl8k_txq_deinit(hw, i); | |
3618 | mwl8k_rxq_deinit(hw, 0); | |
3619 | ||
3620 | err_iounmap: | |
3621 | if (priv->cookie != NULL) | |
3622 | pci_free_consistent(priv->pdev, 4, | |
3623 | priv->cookie, priv->cookie_dma); | |
3624 | ||
3625 | if (priv->regs != NULL) | |
3626 | pci_iounmap(pdev, priv->regs); | |
3627 | ||
3628 | if (priv->config_wq != NULL) | |
3629 | destroy_workqueue(priv->config_wq); | |
3630 | ||
3631 | pci_set_drvdata(pdev, NULL); | |
3632 | ieee80211_free_hw(hw); | |
3633 | ||
3634 | err_free_reg: | |
3635 | pci_release_regions(pdev); | |
3636 | pci_disable_device(pdev); | |
3637 | ||
3638 | return rc; | |
3639 | } | |
3640 | ||
230f7af0 | 3641 | static void __devexit mwl8k_shutdown(struct pci_dev *pdev) |
a66098da LB |
3642 | { |
3643 | printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__); | |
3644 | } | |
3645 | ||
230f7af0 | 3646 | static void __devexit mwl8k_remove(struct pci_dev *pdev) |
a66098da LB |
3647 | { |
3648 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); | |
3649 | struct mwl8k_priv *priv; | |
3650 | int i; | |
3651 | ||
3652 | if (hw == NULL) | |
3653 | return; | |
3654 | priv = hw->priv; | |
3655 | ||
3656 | ieee80211_stop_queues(hw); | |
3657 | ||
60aa569f LB |
3658 | ieee80211_unregister_hw(hw); |
3659 | ||
a66098da LB |
3660 | /* Remove tx reclaim tasklet */ |
3661 | tasklet_kill(&priv->tx_reclaim_task); | |
3662 | ||
3663 | /* Stop config thread */ | |
3664 | destroy_workqueue(priv->config_wq); | |
3665 | ||
3666 | /* Stop hardware */ | |
3667 | mwl8k_hw_reset(priv); | |
3668 | ||
3669 | /* Return all skbs to mac80211 */ | |
3670 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3671 | mwl8k_txq_reclaim(hw, i, 1); | |
3672 | ||
a66098da LB |
3673 | for (i = 0; i < MWL8K_TX_QUEUES; i++) |
3674 | mwl8k_txq_deinit(hw, i); | |
3675 | ||
3676 | mwl8k_rxq_deinit(hw, 0); | |
3677 | ||
3678 | pci_free_consistent(priv->pdev, 4, | |
3679 | priv->cookie, priv->cookie_dma); | |
3680 | ||
3681 | pci_iounmap(pdev, priv->regs); | |
3682 | pci_set_drvdata(pdev, NULL); | |
3683 | ieee80211_free_hw(hw); | |
3684 | pci_release_regions(pdev); | |
3685 | pci_disable_device(pdev); | |
3686 | } | |
3687 | ||
3688 | static struct pci_driver mwl8k_driver = { | |
3689 | .name = MWL8K_NAME, | |
3690 | .id_table = mwl8k_table, | |
3691 | .probe = mwl8k_probe, | |
3692 | .remove = __devexit_p(mwl8k_remove), | |
3693 | .shutdown = __devexit_p(mwl8k_shutdown), | |
3694 | }; | |
3695 | ||
3696 | static int __init mwl8k_init(void) | |
3697 | { | |
3698 | return pci_register_driver(&mwl8k_driver); | |
3699 | } | |
3700 | ||
3701 | static void __exit mwl8k_exit(void) | |
3702 | { | |
3703 | pci_unregister_driver(&mwl8k_driver); | |
3704 | } | |
3705 | ||
3706 | module_init(mwl8k_init); | |
3707 | module_exit(mwl8k_exit); |