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 | ||
a66098da LB |
114 | struct mwl8k_tx_queue { |
115 | /* hw transmits here */ | |
116 | int tx_head; | |
117 | ||
118 | /* sw appends here */ | |
119 | int tx_tail; | |
120 | ||
121 | struct ieee80211_tx_queue_stats tx_stats; | |
122 | struct mwl8k_tx_desc *tx_desc_area; | |
123 | dma_addr_t tx_desc_dma; | |
76266b2a | 124 | struct sk_buff **tx_skb; |
a66098da LB |
125 | }; |
126 | ||
127 | /* Pointers to the firmware data and meta information about it. */ | |
128 | struct mwl8k_firmware { | |
129 | /* Microcode */ | |
130 | struct firmware *ucode; | |
131 | ||
132 | /* Boot helper code */ | |
133 | struct firmware *helper; | |
134 | }; | |
135 | ||
136 | struct mwl8k_priv { | |
137 | void __iomem *regs; | |
138 | struct ieee80211_hw *hw; | |
139 | ||
140 | struct pci_dev *pdev; | |
141 | u8 name[16]; | |
a66098da LB |
142 | |
143 | /* firmware files and meta data */ | |
144 | struct mwl8k_firmware fw; | |
145 | u32 part_num; | |
146 | ||
618952a7 LB |
147 | /* firmware access */ |
148 | struct mutex fw_mutex; | |
149 | struct task_struct *fw_mutex_owner; | |
150 | int fw_mutex_depth; | |
151 | struct completion *tx_wait; | |
152 | struct completion *hostcmd_wait; | |
153 | ||
a66098da LB |
154 | /* lock held over TX and TX reap */ |
155 | spinlock_t tx_lock; | |
a66098da LB |
156 | |
157 | struct ieee80211_vif *vif; | |
a66098da LB |
158 | |
159 | struct ieee80211_channel *current_channel; | |
160 | ||
161 | /* power management status cookie from firmware */ | |
162 | u32 *cookie; | |
163 | dma_addr_t cookie_dma; | |
164 | ||
165 | u16 num_mcaddrs; | |
a66098da LB |
166 | u8 hw_rev; |
167 | __le32 fw_rev; | |
a66098da LB |
168 | |
169 | /* | |
170 | * Running count of TX packets in flight, to avoid | |
171 | * iterating over the transmit rings each time. | |
172 | */ | |
173 | int pending_tx_pkts; | |
174 | ||
175 | struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES]; | |
176 | struct mwl8k_tx_queue txq[MWL8K_TX_QUEUES]; | |
177 | ||
178 | /* PHY parameters */ | |
179 | struct ieee80211_supported_band band; | |
180 | struct ieee80211_channel channels[14]; | |
181 | struct ieee80211_rate rates[12]; | |
182 | ||
c46563b7 | 183 | bool radio_on; |
68ce3884 | 184 | bool radio_short_preamble; |
0439b1f5 | 185 | bool wmm_enabled; |
a66098da | 186 | |
a66098da LB |
187 | /* XXX need to convert this to handle multiple interfaces */ |
188 | bool capture_beacon; | |
d89173f2 | 189 | u8 capture_bssid[ETH_ALEN]; |
a66098da LB |
190 | struct sk_buff *beacon_skb; |
191 | ||
192 | /* | |
193 | * This FJ worker has to be global as it is scheduled from the | |
194 | * RX handler. At this point we don't know which interface it | |
195 | * belongs to until the list of bssids waiting to complete join | |
196 | * is checked. | |
197 | */ | |
198 | struct work_struct finalize_join_worker; | |
199 | ||
200 | /* Tasklet to reclaim TX descriptors and buffers after tx */ | |
201 | struct tasklet_struct tx_reclaim_task; | |
202 | ||
203 | /* Work thread to serialize configuration requests */ | |
204 | struct workqueue_struct *config_wq; | |
a66098da LB |
205 | }; |
206 | ||
207 | /* Per interface specific private data */ | |
208 | struct mwl8k_vif { | |
a66098da LB |
209 | /* backpointer to parent config block */ |
210 | struct mwl8k_priv *priv; | |
211 | ||
212 | /* BSS config of AP or IBSS from mac80211*/ | |
213 | struct ieee80211_bss_conf bss_info; | |
214 | ||
215 | /* BSSID of AP or IBSS */ | |
d89173f2 LB |
216 | u8 bssid[ETH_ALEN]; |
217 | u8 mac_addr[ETH_ALEN]; | |
a66098da LB |
218 | |
219 | /* | |
220 | * Subset of supported legacy rates. | |
221 | * Intersection of AP and STA supported rates. | |
222 | */ | |
223 | struct ieee80211_rate legacy_rates[12]; | |
224 | ||
225 | /* number of supported legacy rates */ | |
226 | u8 legacy_nrates; | |
227 | ||
a66098da LB |
228 | /* Index into station database.Returned by update_sta_db call */ |
229 | u8 peer_id; | |
230 | ||
231 | /* Non AMPDU sequence number assigned by driver */ | |
232 | u16 seqno; | |
a66098da LB |
233 | }; |
234 | ||
a94cc97e | 235 | #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv)) |
a66098da LB |
236 | |
237 | static const struct ieee80211_channel mwl8k_channels[] = { | |
238 | { .center_freq = 2412, .hw_value = 1, }, | |
239 | { .center_freq = 2417, .hw_value = 2, }, | |
240 | { .center_freq = 2422, .hw_value = 3, }, | |
241 | { .center_freq = 2427, .hw_value = 4, }, | |
242 | { .center_freq = 2432, .hw_value = 5, }, | |
243 | { .center_freq = 2437, .hw_value = 6, }, | |
244 | { .center_freq = 2442, .hw_value = 7, }, | |
245 | { .center_freq = 2447, .hw_value = 8, }, | |
246 | { .center_freq = 2452, .hw_value = 9, }, | |
247 | { .center_freq = 2457, .hw_value = 10, }, | |
248 | { .center_freq = 2462, .hw_value = 11, }, | |
249 | }; | |
250 | ||
251 | static const struct ieee80211_rate mwl8k_rates[] = { | |
252 | { .bitrate = 10, .hw_value = 2, }, | |
253 | { .bitrate = 20, .hw_value = 4, }, | |
254 | { .bitrate = 55, .hw_value = 11, }, | |
255 | { .bitrate = 60, .hw_value = 12, }, | |
256 | { .bitrate = 90, .hw_value = 18, }, | |
257 | { .bitrate = 110, .hw_value = 22, }, | |
258 | { .bitrate = 120, .hw_value = 24, }, | |
259 | { .bitrate = 180, .hw_value = 36, }, | |
260 | { .bitrate = 240, .hw_value = 48, }, | |
261 | { .bitrate = 360, .hw_value = 72, }, | |
262 | { .bitrate = 480, .hw_value = 96, }, | |
263 | { .bitrate = 540, .hw_value = 108, }, | |
264 | }; | |
265 | ||
a66098da LB |
266 | /* Set or get info from Firmware */ |
267 | #define MWL8K_CMD_SET 0x0001 | |
268 | #define MWL8K_CMD_GET 0x0000 | |
269 | ||
270 | /* Firmware command codes */ | |
271 | #define MWL8K_CMD_CODE_DNLD 0x0001 | |
272 | #define MWL8K_CMD_GET_HW_SPEC 0x0003 | |
273 | #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010 | |
274 | #define MWL8K_CMD_GET_STAT 0x0014 | |
ff45fc60 LB |
275 | #define MWL8K_CMD_RADIO_CONTROL 0x001c |
276 | #define MWL8K_CMD_RF_TX_POWER 0x001e | |
a66098da LB |
277 | #define MWL8K_CMD_SET_PRE_SCAN 0x0107 |
278 | #define MWL8K_CMD_SET_POST_SCAN 0x0108 | |
ff45fc60 LB |
279 | #define MWL8K_CMD_SET_RF_CHANNEL 0x010a |
280 | #define MWL8K_CMD_SET_AID 0x010d | |
281 | #define MWL8K_CMD_SET_RATE 0x0110 | |
282 | #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111 | |
283 | #define MWL8K_CMD_RTS_THRESHOLD 0x0113 | |
a66098da | 284 | #define MWL8K_CMD_SET_SLOT 0x0114 |
ff45fc60 LB |
285 | #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115 |
286 | #define MWL8K_CMD_SET_WMM_MODE 0x0123 | |
a66098da | 287 | #define MWL8K_CMD_MIMO_CONFIG 0x0125 |
ff45fc60 | 288 | #define MWL8K_CMD_USE_FIXED_RATE 0x0126 |
a66098da | 289 | #define MWL8K_CMD_ENABLE_SNIFFER 0x0150 |
a66098da | 290 | #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203 |
ff45fc60 | 291 | #define MWL8K_CMD_UPDATE_STADB 0x1123 |
a66098da LB |
292 | |
293 | static const char *mwl8k_cmd_name(u16 cmd, char *buf, int bufsize) | |
294 | { | |
295 | #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\ | |
296 | snprintf(buf, bufsize, "%s", #x);\ | |
297 | return buf;\ | |
298 | } while (0) | |
ce9e2e1b | 299 | switch (cmd & ~0x8000) { |
a66098da LB |
300 | MWL8K_CMDNAME(CODE_DNLD); |
301 | MWL8K_CMDNAME(GET_HW_SPEC); | |
302 | MWL8K_CMDNAME(MAC_MULTICAST_ADR); | |
303 | MWL8K_CMDNAME(GET_STAT); | |
304 | MWL8K_CMDNAME(RADIO_CONTROL); | |
305 | MWL8K_CMDNAME(RF_TX_POWER); | |
306 | MWL8K_CMDNAME(SET_PRE_SCAN); | |
307 | MWL8K_CMDNAME(SET_POST_SCAN); | |
308 | MWL8K_CMDNAME(SET_RF_CHANNEL); | |
ff45fc60 LB |
309 | MWL8K_CMDNAME(SET_AID); |
310 | MWL8K_CMDNAME(SET_RATE); | |
311 | MWL8K_CMDNAME(SET_FINALIZE_JOIN); | |
312 | MWL8K_CMDNAME(RTS_THRESHOLD); | |
a66098da | 313 | MWL8K_CMDNAME(SET_SLOT); |
ff45fc60 LB |
314 | MWL8K_CMDNAME(SET_EDCA_PARAMS); |
315 | MWL8K_CMDNAME(SET_WMM_MODE); | |
a66098da | 316 | MWL8K_CMDNAME(MIMO_CONFIG); |
ff45fc60 | 317 | MWL8K_CMDNAME(USE_FIXED_RATE); |
a66098da | 318 | MWL8K_CMDNAME(ENABLE_SNIFFER); |
a66098da | 319 | MWL8K_CMDNAME(SET_RATEADAPT_MODE); |
ff45fc60 | 320 | MWL8K_CMDNAME(UPDATE_STADB); |
a66098da LB |
321 | default: |
322 | snprintf(buf, bufsize, "0x%x", cmd); | |
323 | } | |
324 | #undef MWL8K_CMDNAME | |
325 | ||
326 | return buf; | |
327 | } | |
328 | ||
329 | /* Hardware and firmware reset */ | |
330 | static void mwl8k_hw_reset(struct mwl8k_priv *priv) | |
331 | { | |
332 | iowrite32(MWL8K_H2A_INT_RESET, | |
333 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
334 | iowrite32(MWL8K_H2A_INT_RESET, | |
335 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
336 | msleep(20); | |
337 | } | |
338 | ||
339 | /* Release fw image */ | |
340 | static void mwl8k_release_fw(struct firmware **fw) | |
341 | { | |
342 | if (*fw == NULL) | |
343 | return; | |
344 | release_firmware(*fw); | |
345 | *fw = NULL; | |
346 | } | |
347 | ||
348 | static void mwl8k_release_firmware(struct mwl8k_priv *priv) | |
349 | { | |
350 | mwl8k_release_fw(&priv->fw.ucode); | |
351 | mwl8k_release_fw(&priv->fw.helper); | |
352 | } | |
353 | ||
354 | /* Request fw image */ | |
355 | static int mwl8k_request_fw(struct mwl8k_priv *priv, | |
356 | const char *fname, struct firmware **fw) | |
357 | { | |
358 | /* release current image */ | |
359 | if (*fw != NULL) | |
360 | mwl8k_release_fw(fw); | |
361 | ||
362 | return request_firmware((const struct firmware **)fw, | |
363 | fname, &priv->pdev->dev); | |
364 | } | |
365 | ||
366 | static int mwl8k_request_firmware(struct mwl8k_priv *priv, u32 part_num) | |
367 | { | |
368 | u8 filename[64]; | |
369 | int rc; | |
370 | ||
371 | priv->part_num = part_num; | |
372 | ||
373 | snprintf(filename, sizeof(filename), | |
374 | "mwl8k/helper_%u.fw", priv->part_num); | |
375 | ||
376 | rc = mwl8k_request_fw(priv, filename, &priv->fw.helper); | |
377 | if (rc) { | |
378 | printk(KERN_ERR | |
379 | "%s Error requesting helper firmware file %s\n", | |
380 | pci_name(priv->pdev), filename); | |
381 | return rc; | |
382 | } | |
383 | ||
384 | snprintf(filename, sizeof(filename), | |
385 | "mwl8k/fmimage_%u.fw", priv->part_num); | |
386 | ||
387 | rc = mwl8k_request_fw(priv, filename, &priv->fw.ucode); | |
388 | if (rc) { | |
389 | printk(KERN_ERR "%s Error requesting firmware file %s\n", | |
390 | pci_name(priv->pdev), filename); | |
391 | mwl8k_release_fw(&priv->fw.helper); | |
392 | return rc; | |
393 | } | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
398 | struct mwl8k_cmd_pkt { | |
399 | __le16 code; | |
400 | __le16 length; | |
401 | __le16 seq_num; | |
402 | __le16 result; | |
403 | char payload[0]; | |
404 | } __attribute__((packed)); | |
405 | ||
406 | /* | |
407 | * Firmware loading. | |
408 | */ | |
409 | static int | |
410 | mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length) | |
411 | { | |
412 | void __iomem *regs = priv->regs; | |
413 | dma_addr_t dma_addr; | |
a66098da LB |
414 | int loops; |
415 | ||
416 | dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE); | |
417 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
418 | return -ENOMEM; | |
419 | ||
420 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
421 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
422 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
423 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
424 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
425 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
426 | ||
a66098da LB |
427 | loops = 1000; |
428 | do { | |
429 | u32 int_code; | |
430 | ||
431 | int_code = ioread32(regs + MWL8K_HIU_INT_CODE); | |
432 | if (int_code == MWL8K_INT_CODE_CMD_FINISHED) { | |
433 | iowrite32(0, regs + MWL8K_HIU_INT_CODE); | |
a66098da LB |
434 | break; |
435 | } | |
436 | ||
437 | udelay(1); | |
438 | } while (--loops); | |
439 | ||
440 | pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE); | |
441 | ||
d4b70570 | 442 | return loops ? 0 : -ETIMEDOUT; |
a66098da LB |
443 | } |
444 | ||
445 | static int mwl8k_load_fw_image(struct mwl8k_priv *priv, | |
446 | const u8 *data, size_t length) | |
447 | { | |
448 | struct mwl8k_cmd_pkt *cmd; | |
449 | int done; | |
450 | int rc = 0; | |
451 | ||
452 | cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL); | |
453 | if (cmd == NULL) | |
454 | return -ENOMEM; | |
455 | ||
456 | cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD); | |
457 | cmd->seq_num = 0; | |
458 | cmd->result = 0; | |
459 | ||
460 | done = 0; | |
461 | while (length) { | |
462 | int block_size = length > 256 ? 256 : length; | |
463 | ||
464 | memcpy(cmd->payload, data + done, block_size); | |
465 | cmd->length = cpu_to_le16(block_size); | |
466 | ||
467 | rc = mwl8k_send_fw_load_cmd(priv, cmd, | |
468 | sizeof(*cmd) + block_size); | |
469 | if (rc) | |
470 | break; | |
471 | ||
472 | done += block_size; | |
473 | length -= block_size; | |
474 | } | |
475 | ||
476 | if (!rc) { | |
477 | cmd->length = 0; | |
478 | rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd)); | |
479 | } | |
480 | ||
481 | kfree(cmd); | |
482 | ||
483 | return rc; | |
484 | } | |
485 | ||
486 | static int mwl8k_feed_fw_image(struct mwl8k_priv *priv, | |
487 | const u8 *data, size_t length) | |
488 | { | |
489 | unsigned char *buffer; | |
490 | int may_continue, rc = 0; | |
491 | u32 done, prev_block_size; | |
492 | ||
493 | buffer = kmalloc(1024, GFP_KERNEL); | |
494 | if (buffer == NULL) | |
495 | return -ENOMEM; | |
496 | ||
497 | done = 0; | |
498 | prev_block_size = 0; | |
499 | may_continue = 1000; | |
500 | while (may_continue > 0) { | |
501 | u32 block_size; | |
502 | ||
503 | block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH); | |
504 | if (block_size & 1) { | |
505 | block_size &= ~1; | |
506 | may_continue--; | |
507 | } else { | |
508 | done += prev_block_size; | |
509 | length -= prev_block_size; | |
510 | } | |
511 | ||
512 | if (block_size > 1024 || block_size > length) { | |
513 | rc = -EOVERFLOW; | |
514 | break; | |
515 | } | |
516 | ||
517 | if (length == 0) { | |
518 | rc = 0; | |
519 | break; | |
520 | } | |
521 | ||
522 | if (block_size == 0) { | |
523 | rc = -EPROTO; | |
524 | may_continue--; | |
525 | udelay(1); | |
526 | continue; | |
527 | } | |
528 | ||
529 | prev_block_size = block_size; | |
530 | memcpy(buffer, data + done, block_size); | |
531 | ||
532 | rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size); | |
533 | if (rc) | |
534 | break; | |
535 | } | |
536 | ||
537 | if (!rc && length != 0) | |
538 | rc = -EREMOTEIO; | |
539 | ||
540 | kfree(buffer); | |
541 | ||
542 | return rc; | |
543 | } | |
544 | ||
545 | static int mwl8k_load_firmware(struct mwl8k_priv *priv) | |
546 | { | |
547 | int loops, rc; | |
548 | ||
549 | const u8 *ucode = priv->fw.ucode->data; | |
550 | size_t ucode_len = priv->fw.ucode->size; | |
551 | const u8 *helper = priv->fw.helper->data; | |
552 | size_t helper_len = priv->fw.helper->size; | |
553 | ||
554 | if (!memcmp(ucode, "\x01\x00\x00\x00", 4)) { | |
555 | rc = mwl8k_load_fw_image(priv, helper, helper_len); | |
556 | if (rc) { | |
557 | printk(KERN_ERR "%s: unable to load firmware " | |
558 | "helper image\n", pci_name(priv->pdev)); | |
559 | return rc; | |
560 | } | |
561 | msleep(1); | |
562 | ||
563 | rc = mwl8k_feed_fw_image(priv, ucode, ucode_len); | |
564 | } else { | |
565 | rc = mwl8k_load_fw_image(priv, ucode, ucode_len); | |
566 | } | |
567 | ||
568 | if (rc) { | |
569 | printk(KERN_ERR "%s: unable to load firmware data\n", | |
570 | pci_name(priv->pdev)); | |
571 | return rc; | |
572 | } | |
573 | ||
574 | iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR); | |
575 | msleep(1); | |
576 | ||
577 | loops = 200000; | |
578 | do { | |
579 | if (ioread32(priv->regs + MWL8K_HIU_INT_CODE) | |
580 | == MWL8K_FWSTA_READY) | |
581 | break; | |
582 | udelay(1); | |
583 | } while (--loops); | |
584 | ||
585 | return loops ? 0 : -ETIMEDOUT; | |
586 | } | |
587 | ||
588 | ||
589 | /* | |
590 | * Defines shared between transmission and reception. | |
591 | */ | |
592 | /* HT control fields for firmware */ | |
593 | struct ewc_ht_info { | |
594 | __le16 control1; | |
595 | __le16 control2; | |
596 | __le16 control3; | |
597 | } __attribute__((packed)); | |
598 | ||
599 | /* Firmware Station database operations */ | |
600 | #define MWL8K_STA_DB_ADD_ENTRY 0 | |
601 | #define MWL8K_STA_DB_MODIFY_ENTRY 1 | |
602 | #define MWL8K_STA_DB_DEL_ENTRY 2 | |
603 | #define MWL8K_STA_DB_FLUSH 3 | |
604 | ||
605 | /* Peer Entry flags - used to define the type of the peer node */ | |
606 | #define MWL8K_PEER_TYPE_ACCESSPOINT 2 | |
a66098da LB |
607 | |
608 | #define MWL8K_IEEE_LEGACY_DATA_RATES 12 | |
609 | #define MWL8K_MCS_BITMAP_SIZE 16 | |
a66098da LB |
610 | |
611 | struct peer_capability_info { | |
612 | /* Peer type - AP vs. STA. */ | |
613 | __u8 peer_type; | |
614 | ||
615 | /* Basic 802.11 capabilities from assoc resp. */ | |
616 | __le16 basic_caps; | |
617 | ||
618 | /* Set if peer supports 802.11n high throughput (HT). */ | |
619 | __u8 ht_support; | |
620 | ||
621 | /* Valid if HT is supported. */ | |
622 | __le16 ht_caps; | |
623 | __u8 extended_ht_caps; | |
624 | struct ewc_ht_info ewc_info; | |
625 | ||
626 | /* Legacy rate table. Intersection of our rates and peer rates. */ | |
627 | __u8 legacy_rates[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
628 | ||
629 | /* HT rate table. Intersection of our rates and peer rates. */ | |
630 | __u8 ht_rates[MWL8K_MCS_BITMAP_SIZE]; | |
c23b5a69 | 631 | __u8 pad[16]; |
a66098da LB |
632 | |
633 | /* If set, interoperability mode, no proprietary extensions. */ | |
634 | __u8 interop; | |
635 | __u8 pad2; | |
636 | __u8 station_id; | |
637 | __le16 amsdu_enabled; | |
638 | } __attribute__((packed)); | |
639 | ||
640 | /* Inline functions to manipulate QoS field in data descriptor. */ | |
a66098da LB |
641 | static inline u16 mwl8k_qos_setbit_eosp(u16 qos) |
642 | { | |
643 | u16 val_mask = 1 << 4; | |
644 | ||
645 | /* End of Service Period Bit 4 */ | |
646 | return qos | val_mask; | |
647 | } | |
648 | ||
649 | static inline u16 mwl8k_qos_setbit_ack(u16 qos, u8 ack_policy) | |
650 | { | |
651 | u16 val_mask = 0x3; | |
652 | u8 shift = 5; | |
653 | u16 qos_mask = ~(val_mask << shift); | |
654 | ||
655 | /* Ack Policy Bit 5-6 */ | |
656 | return (qos & qos_mask) | ((ack_policy & val_mask) << shift); | |
657 | } | |
658 | ||
659 | static inline u16 mwl8k_qos_setbit_amsdu(u16 qos) | |
660 | { | |
661 | u16 val_mask = 1 << 7; | |
662 | ||
663 | /* AMSDU present Bit 7 */ | |
664 | return qos | val_mask; | |
665 | } | |
666 | ||
667 | static inline u16 mwl8k_qos_setbit_qlen(u16 qos, u8 len) | |
668 | { | |
669 | u16 val_mask = 0xff; | |
670 | u8 shift = 8; | |
671 | u16 qos_mask = ~(val_mask << shift); | |
672 | ||
673 | /* Queue Length Bits 8-15 */ | |
674 | return (qos & qos_mask) | ((len & val_mask) << shift); | |
675 | } | |
676 | ||
677 | /* DMA header used by firmware and hardware. */ | |
678 | struct mwl8k_dma_data { | |
679 | __le16 fwlen; | |
680 | struct ieee80211_hdr wh; | |
681 | } __attribute__((packed)); | |
682 | ||
683 | /* Routines to add/remove DMA header from skb. */ | |
76266b2a | 684 | static inline void mwl8k_remove_dma_header(struct sk_buff *skb) |
a66098da | 685 | { |
76266b2a | 686 | struct mwl8k_dma_data *tr = (struct mwl8k_dma_data *)skb->data; |
a66098da | 687 | void *dst, *src = &tr->wh; |
76266b2a | 688 | int hdrlen = ieee80211_hdrlen(tr->wh.frame_control); |
a66098da LB |
689 | u16 space = sizeof(struct mwl8k_dma_data) - hdrlen; |
690 | ||
691 | dst = (void *)tr + space; | |
692 | if (dst != src) { | |
693 | memmove(dst, src, hdrlen); | |
694 | skb_pull(skb, space); | |
695 | } | |
a66098da LB |
696 | } |
697 | ||
76266b2a | 698 | static inline void mwl8k_add_dma_header(struct sk_buff *skb) |
a66098da LB |
699 | { |
700 | struct ieee80211_hdr *wh; | |
701 | u32 hdrlen, pktlen; | |
702 | struct mwl8k_dma_data *tr; | |
703 | ||
704 | wh = (struct ieee80211_hdr *)skb->data; | |
705 | hdrlen = ieee80211_hdrlen(wh->frame_control); | |
706 | pktlen = skb->len; | |
707 | ||
708 | /* | |
709 | * Copy up/down the 802.11 header; the firmware requires | |
710 | * we present a 2-byte payload length followed by a | |
711 | * 4-address header (w/o QoS), followed (optionally) by | |
712 | * any WEP/ExtIV header (but only filled in for CCMP). | |
713 | */ | |
714 | if (hdrlen != sizeof(struct mwl8k_dma_data)) | |
715 | skb_push(skb, sizeof(struct mwl8k_dma_data) - hdrlen); | |
716 | ||
717 | tr = (struct mwl8k_dma_data *)skb->data; | |
718 | if (wh != &tr->wh) | |
719 | memmove(&tr->wh, wh, hdrlen); | |
720 | ||
721 | /* Clear addr4 */ | |
d89173f2 | 722 | memset(tr->wh.addr4, 0, ETH_ALEN); |
a66098da LB |
723 | |
724 | /* | |
725 | * Firmware length is the length of the fully formed "802.11 | |
726 | * payload". That is, everything except for the 802.11 header. | |
727 | * This includes all crypto material including the MIC. | |
728 | */ | |
729 | tr->fwlen = cpu_to_le16(pktlen - hdrlen); | |
a66098da LB |
730 | } |
731 | ||
732 | ||
733 | /* | |
734 | * Packet reception. | |
735 | */ | |
a66098da | 736 | #define MWL8K_RX_CTRL_OWNED_BY_HOST 0x02 |
a66098da LB |
737 | |
738 | struct mwl8k_rx_desc { | |
739 | __le16 pkt_len; | |
740 | __u8 link_quality; | |
741 | __u8 noise_level; | |
742 | __le32 pkt_phys_addr; | |
743 | __le32 next_rx_desc_phys_addr; | |
744 | __le16 qos_control; | |
745 | __le16 rate_info; | |
746 | __le32 pad0[4]; | |
747 | __u8 rssi; | |
748 | __u8 channel; | |
749 | __le16 pad1; | |
750 | __u8 rx_ctrl; | |
751 | __u8 rx_status; | |
752 | __u8 pad2[2]; | |
753 | } __attribute__((packed)); | |
754 | ||
755 | #define MWL8K_RX_DESCS 256 | |
756 | #define MWL8K_RX_MAXSZ 3800 | |
757 | ||
758 | static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index) | |
759 | { | |
760 | struct mwl8k_priv *priv = hw->priv; | |
761 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
762 | int size; | |
763 | int i; | |
764 | ||
765 | rxq->rx_desc_count = 0; | |
766 | rxq->rx_head = 0; | |
767 | rxq->rx_tail = 0; | |
768 | ||
769 | size = MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc); | |
770 | ||
771 | rxq->rx_desc_area = | |
772 | pci_alloc_consistent(priv->pdev, size, &rxq->rx_desc_dma); | |
773 | if (rxq->rx_desc_area == NULL) { | |
774 | printk(KERN_ERR "%s: failed to alloc RX descriptors\n", | |
775 | priv->name); | |
776 | return -ENOMEM; | |
777 | } | |
778 | memset(rxq->rx_desc_area, 0, size); | |
779 | ||
780 | rxq->rx_skb = kmalloc(MWL8K_RX_DESCS * | |
781 | sizeof(*rxq->rx_skb), GFP_KERNEL); | |
782 | if (rxq->rx_skb == NULL) { | |
783 | printk(KERN_ERR "%s: failed to alloc RX skbuff list\n", | |
784 | priv->name); | |
785 | pci_free_consistent(priv->pdev, size, | |
786 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
787 | return -ENOMEM; | |
788 | } | |
789 | memset(rxq->rx_skb, 0, MWL8K_RX_DESCS * sizeof(*rxq->rx_skb)); | |
790 | ||
791 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
792 | struct mwl8k_rx_desc *rx_desc; | |
793 | int nexti; | |
794 | ||
795 | rx_desc = rxq->rx_desc_area + i; | |
796 | nexti = (i + 1) % MWL8K_RX_DESCS; | |
797 | ||
798 | rx_desc->next_rx_desc_phys_addr = | |
799 | cpu_to_le32(rxq->rx_desc_dma | |
800 | + nexti * sizeof(*rx_desc)); | |
c491bf12 | 801 | rx_desc->rx_ctrl = MWL8K_RX_CTRL_OWNED_BY_HOST; |
a66098da LB |
802 | } |
803 | ||
804 | return 0; | |
805 | } | |
806 | ||
807 | static int rxq_refill(struct ieee80211_hw *hw, int index, int limit) | |
808 | { | |
809 | struct mwl8k_priv *priv = hw->priv; | |
810 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
811 | int refilled; | |
812 | ||
813 | refilled = 0; | |
814 | while (rxq->rx_desc_count < MWL8K_RX_DESCS && limit--) { | |
815 | struct sk_buff *skb; | |
816 | int rx; | |
817 | ||
818 | skb = dev_alloc_skb(MWL8K_RX_MAXSZ); | |
819 | if (skb == NULL) | |
820 | break; | |
821 | ||
822 | rxq->rx_desc_count++; | |
823 | ||
824 | rx = rxq->rx_tail; | |
825 | rxq->rx_tail = (rx + 1) % MWL8K_RX_DESCS; | |
826 | ||
827 | rxq->rx_desc_area[rx].pkt_phys_addr = | |
828 | cpu_to_le32(pci_map_single(priv->pdev, skb->data, | |
829 | MWL8K_RX_MAXSZ, DMA_FROM_DEVICE)); | |
830 | ||
831 | rxq->rx_desc_area[rx].pkt_len = cpu_to_le16(MWL8K_RX_MAXSZ); | |
832 | rxq->rx_skb[rx] = skb; | |
833 | wmb(); | |
834 | rxq->rx_desc_area[rx].rx_ctrl = 0; | |
835 | ||
836 | refilled++; | |
837 | } | |
838 | ||
839 | return refilled; | |
840 | } | |
841 | ||
842 | /* Must be called only when the card's reception is completely halted */ | |
843 | static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index) | |
844 | { | |
845 | struct mwl8k_priv *priv = hw->priv; | |
846 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
847 | int i; | |
848 | ||
849 | for (i = 0; i < MWL8K_RX_DESCS; i++) { | |
850 | if (rxq->rx_skb[i] != NULL) { | |
851 | unsigned long addr; | |
852 | ||
853 | addr = le32_to_cpu(rxq->rx_desc_area[i].pkt_phys_addr); | |
854 | pci_unmap_single(priv->pdev, addr, MWL8K_RX_MAXSZ, | |
855 | PCI_DMA_FROMDEVICE); | |
856 | kfree_skb(rxq->rx_skb[i]); | |
857 | rxq->rx_skb[i] = NULL; | |
858 | } | |
859 | } | |
860 | ||
861 | kfree(rxq->rx_skb); | |
862 | rxq->rx_skb = NULL; | |
863 | ||
864 | pci_free_consistent(priv->pdev, | |
865 | MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc), | |
866 | rxq->rx_desc_area, rxq->rx_desc_dma); | |
867 | rxq->rx_desc_area = NULL; | |
868 | } | |
869 | ||
870 | ||
871 | /* | |
872 | * Scan a list of BSSIDs to process for finalize join. | |
873 | * Allows for extension to process multiple BSSIDs. | |
874 | */ | |
875 | static inline int | |
876 | mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh) | |
877 | { | |
878 | return priv->capture_beacon && | |
879 | ieee80211_is_beacon(wh->frame_control) && | |
880 | !compare_ether_addr(wh->addr3, priv->capture_bssid); | |
881 | } | |
882 | ||
883 | static inline void mwl8k_save_beacon(struct mwl8k_priv *priv, | |
884 | struct sk_buff *skb) | |
885 | { | |
886 | priv->capture_beacon = false; | |
d89173f2 | 887 | memset(priv->capture_bssid, 0, ETH_ALEN); |
a66098da LB |
888 | |
889 | /* | |
890 | * Use GFP_ATOMIC as rxq_process is called from | |
891 | * the primary interrupt handler, memory allocation call | |
892 | * must not sleep. | |
893 | */ | |
894 | priv->beacon_skb = skb_copy(skb, GFP_ATOMIC); | |
895 | if (priv->beacon_skb != NULL) | |
896 | queue_work(priv->config_wq, | |
897 | &priv->finalize_join_worker); | |
898 | } | |
899 | ||
900 | static int rxq_process(struct ieee80211_hw *hw, int index, int limit) | |
901 | { | |
902 | struct mwl8k_priv *priv = hw->priv; | |
903 | struct mwl8k_rx_queue *rxq = priv->rxq + index; | |
904 | int processed; | |
905 | ||
906 | processed = 0; | |
907 | while (rxq->rx_desc_count && limit--) { | |
908 | struct mwl8k_rx_desc *rx_desc; | |
909 | struct sk_buff *skb; | |
910 | struct ieee80211_rx_status status; | |
911 | unsigned long addr; | |
912 | struct ieee80211_hdr *wh; | |
913 | ||
914 | rx_desc = rxq->rx_desc_area + rxq->rx_head; | |
915 | if (!(rx_desc->rx_ctrl & MWL8K_RX_CTRL_OWNED_BY_HOST)) | |
916 | break; | |
917 | rmb(); | |
918 | ||
919 | skb = rxq->rx_skb[rxq->rx_head]; | |
d25f9f13 LB |
920 | if (skb == NULL) |
921 | break; | |
a66098da LB |
922 | rxq->rx_skb[rxq->rx_head] = NULL; |
923 | ||
924 | rxq->rx_head = (rxq->rx_head + 1) % MWL8K_RX_DESCS; | |
925 | rxq->rx_desc_count--; | |
926 | ||
927 | addr = le32_to_cpu(rx_desc->pkt_phys_addr); | |
928 | pci_unmap_single(priv->pdev, addr, | |
929 | MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE); | |
930 | ||
931 | skb_put(skb, le16_to_cpu(rx_desc->pkt_len)); | |
76266b2a | 932 | mwl8k_remove_dma_header(skb); |
a66098da LB |
933 | |
934 | wh = (struct ieee80211_hdr *)skb->data; | |
935 | ||
936 | /* | |
937 | * Check for pending join operation. save a copy of | |
938 | * the beacon and schedule a tasklet to send finalize | |
939 | * join command to the firmware. | |
940 | */ | |
941 | if (mwl8k_capture_bssid(priv, wh)) | |
942 | mwl8k_save_beacon(priv, skb); | |
943 | ||
944 | memset(&status, 0, sizeof(status)); | |
945 | status.mactime = 0; | |
946 | status.signal = -rx_desc->rssi; | |
947 | status.noise = -rx_desc->noise_level; | |
948 | status.qual = rx_desc->link_quality; | |
949 | status.antenna = 1; | |
950 | status.rate_idx = 1; | |
951 | status.flag = 0; | |
952 | status.band = IEEE80211_BAND_2GHZ; | |
953 | status.freq = ieee80211_channel_to_frequency(rx_desc->channel); | |
f1d58c25 JB |
954 | memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); |
955 | ieee80211_rx_irqsafe(hw, skb); | |
a66098da LB |
956 | |
957 | processed++; | |
958 | } | |
959 | ||
960 | return processed; | |
961 | } | |
962 | ||
963 | ||
964 | /* | |
965 | * Packet transmission. | |
966 | */ | |
967 | ||
968 | /* Transmit queue assignment. */ | |
969 | enum { | |
970 | MWL8K_WME_AC_BK = 0, /* background access */ | |
971 | MWL8K_WME_AC_BE = 1, /* best effort access */ | |
972 | MWL8K_WME_AC_VI = 2, /* video access */ | |
973 | MWL8K_WME_AC_VO = 3, /* voice access */ | |
974 | }; | |
975 | ||
976 | /* Transmit packet ACK policy */ | |
977 | #define MWL8K_TXD_ACK_POLICY_NORMAL 0 | |
a66098da LB |
978 | #define MWL8K_TXD_ACK_POLICY_BLOCKACK 3 |
979 | ||
980 | #define GET_TXQ(_ac) (\ | |
981 | ((_ac) == WME_AC_VO) ? MWL8K_WME_AC_VO : \ | |
982 | ((_ac) == WME_AC_VI) ? MWL8K_WME_AC_VI : \ | |
983 | ((_ac) == WME_AC_BK) ? MWL8K_WME_AC_BK : \ | |
984 | MWL8K_WME_AC_BE) | |
985 | ||
a66098da LB |
986 | #define MWL8K_TXD_STATUS_OK 0x00000001 |
987 | #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002 | |
988 | #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004 | |
989 | #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008 | |
a66098da | 990 | #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000 |
a66098da LB |
991 | |
992 | struct mwl8k_tx_desc { | |
993 | __le32 status; | |
994 | __u8 data_rate; | |
995 | __u8 tx_priority; | |
996 | __le16 qos_control; | |
997 | __le32 pkt_phys_addr; | |
998 | __le16 pkt_len; | |
d89173f2 | 999 | __u8 dest_MAC_addr[ETH_ALEN]; |
a66098da LB |
1000 | __le32 next_tx_desc_phys_addr; |
1001 | __le32 reserved; | |
1002 | __le16 rate_info; | |
1003 | __u8 peer_id; | |
1004 | __u8 tx_frag_cnt; | |
1005 | } __attribute__((packed)); | |
1006 | ||
1007 | #define MWL8K_TX_DESCS 128 | |
1008 | ||
1009 | static int mwl8k_txq_init(struct ieee80211_hw *hw, int index) | |
1010 | { | |
1011 | struct mwl8k_priv *priv = hw->priv; | |
1012 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1013 | int size; | |
1014 | int i; | |
1015 | ||
ce9e2e1b | 1016 | memset(&txq->tx_stats, 0, sizeof(struct ieee80211_tx_queue_stats)); |
a66098da LB |
1017 | txq->tx_stats.limit = MWL8K_TX_DESCS; |
1018 | txq->tx_head = 0; | |
1019 | txq->tx_tail = 0; | |
1020 | ||
1021 | size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc); | |
1022 | ||
1023 | txq->tx_desc_area = | |
1024 | pci_alloc_consistent(priv->pdev, size, &txq->tx_desc_dma); | |
1025 | if (txq->tx_desc_area == NULL) { | |
1026 | printk(KERN_ERR "%s: failed to alloc TX descriptors\n", | |
1027 | priv->name); | |
1028 | return -ENOMEM; | |
1029 | } | |
1030 | memset(txq->tx_desc_area, 0, size); | |
1031 | ||
1032 | txq->tx_skb = kmalloc(MWL8K_TX_DESCS * sizeof(*txq->tx_skb), | |
1033 | GFP_KERNEL); | |
1034 | if (txq->tx_skb == NULL) { | |
1035 | printk(KERN_ERR "%s: failed to alloc TX skbuff list\n", | |
1036 | priv->name); | |
1037 | pci_free_consistent(priv->pdev, size, | |
1038 | txq->tx_desc_area, txq->tx_desc_dma); | |
1039 | return -ENOMEM; | |
1040 | } | |
1041 | memset(txq->tx_skb, 0, MWL8K_TX_DESCS * sizeof(*txq->tx_skb)); | |
1042 | ||
1043 | for (i = 0; i < MWL8K_TX_DESCS; i++) { | |
1044 | struct mwl8k_tx_desc *tx_desc; | |
1045 | int nexti; | |
1046 | ||
1047 | tx_desc = txq->tx_desc_area + i; | |
1048 | nexti = (i + 1) % MWL8K_TX_DESCS; | |
1049 | ||
1050 | tx_desc->status = 0; | |
1051 | tx_desc->next_tx_desc_phys_addr = | |
1052 | cpu_to_le32(txq->tx_desc_dma + | |
1053 | nexti * sizeof(*tx_desc)); | |
1054 | } | |
1055 | ||
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | static inline void mwl8k_tx_start(struct mwl8k_priv *priv) | |
1060 | { | |
1061 | iowrite32(MWL8K_H2A_INT_PPA_READY, | |
1062 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1063 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
1064 | priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1065 | ioread32(priv->regs + MWL8K_HIU_INT_CODE); | |
1066 | } | |
1067 | ||
1068 | static inline int mwl8k_txq_busy(struct mwl8k_priv *priv) | |
1069 | { | |
1070 | return priv->pending_tx_pkts; | |
1071 | } | |
1072 | ||
1073 | struct mwl8k_txq_info { | |
1074 | u32 fw_owned; | |
1075 | u32 drv_owned; | |
1076 | u32 unused; | |
1077 | u32 len; | |
1078 | u32 head; | |
1079 | u32 tail; | |
1080 | }; | |
1081 | ||
1082 | static int mwl8k_scan_tx_ring(struct mwl8k_priv *priv, | |
c3f967d3 | 1083 | struct mwl8k_txq_info *txinfo) |
a66098da LB |
1084 | { |
1085 | int count, desc, status; | |
1086 | struct mwl8k_tx_queue *txq; | |
1087 | struct mwl8k_tx_desc *tx_desc; | |
1088 | int ndescs = 0; | |
1089 | ||
c3f967d3 LB |
1090 | memset(txinfo, 0, MWL8K_TX_QUEUES * sizeof(struct mwl8k_txq_info)); |
1091 | ||
a66098da | 1092 | spin_lock_bh(&priv->tx_lock); |
c3f967d3 | 1093 | for (count = 0; count < MWL8K_TX_QUEUES; count++) { |
a66098da LB |
1094 | txq = priv->txq + count; |
1095 | txinfo[count].len = txq->tx_stats.len; | |
1096 | txinfo[count].head = txq->tx_head; | |
1097 | txinfo[count].tail = txq->tx_tail; | |
1098 | for (desc = 0; desc < MWL8K_TX_DESCS; desc++) { | |
1099 | tx_desc = txq->tx_desc_area + desc; | |
1100 | status = le32_to_cpu(tx_desc->status); | |
1101 | ||
1102 | if (status & MWL8K_TXD_STATUS_FW_OWNED) | |
1103 | txinfo[count].fw_owned++; | |
1104 | else | |
1105 | txinfo[count].drv_owned++; | |
1106 | ||
1107 | if (tx_desc->pkt_len == 0) | |
1108 | txinfo[count].unused++; | |
1109 | } | |
1110 | } | |
1111 | spin_unlock_bh(&priv->tx_lock); | |
1112 | ||
1113 | return ndescs; | |
1114 | } | |
1115 | ||
618952a7 LB |
1116 | /* |
1117 | * Must be called with hw->fw_mutex held and tx queues stopped. | |
1118 | */ | |
950d5b01 | 1119 | static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw) |
a66098da | 1120 | { |
a66098da LB |
1121 | struct mwl8k_priv *priv = hw->priv; |
1122 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
ce9e2e1b LB |
1123 | u32 count; |
1124 | unsigned long timeout; | |
a66098da LB |
1125 | |
1126 | might_sleep(); | |
1127 | ||
a66098da LB |
1128 | spin_lock_bh(&priv->tx_lock); |
1129 | count = mwl8k_txq_busy(priv); | |
1130 | if (count) { | |
1131 | priv->tx_wait = &cmd_wait; | |
c46563b7 | 1132 | if (priv->radio_on) |
a66098da LB |
1133 | mwl8k_tx_start(priv); |
1134 | } | |
1135 | spin_unlock_bh(&priv->tx_lock); | |
1136 | ||
1137 | if (count) { | |
c3f967d3 | 1138 | struct mwl8k_txq_info txinfo[MWL8K_TX_QUEUES]; |
a66098da LB |
1139 | int index; |
1140 | int newcount; | |
1141 | ||
1142 | timeout = wait_for_completion_timeout(&cmd_wait, | |
618952a7 | 1143 | msecs_to_jiffies(5000)); |
a66098da LB |
1144 | if (timeout) |
1145 | return 0; | |
1146 | ||
1147 | spin_lock_bh(&priv->tx_lock); | |
1148 | priv->tx_wait = NULL; | |
1149 | newcount = mwl8k_txq_busy(priv); | |
1150 | spin_unlock_bh(&priv->tx_lock); | |
1151 | ||
618952a7 | 1152 | printk(KERN_ERR "%s(%u) TIMEDOUT:5000ms Pend:%u-->%u\n", |
950d5b01 | 1153 | __func__, __LINE__, count, newcount); |
a66098da | 1154 | |
c3f967d3 LB |
1155 | mwl8k_scan_tx_ring(priv, txinfo); |
1156 | for (index = 0; index < MWL8K_TX_QUEUES; index++) | |
a66098da LB |
1157 | printk(KERN_ERR |
1158 | "TXQ:%u L:%u H:%u T:%u FW:%u DRV:%u U:%u\n", | |
1159 | index, | |
1160 | txinfo[index].len, | |
1161 | txinfo[index].head, | |
1162 | txinfo[index].tail, | |
1163 | txinfo[index].fw_owned, | |
1164 | txinfo[index].drv_owned, | |
1165 | txinfo[index].unused); | |
ce9e2e1b | 1166 | |
a66098da LB |
1167 | return -ETIMEDOUT; |
1168 | } | |
1169 | ||
1170 | return 0; | |
1171 | } | |
1172 | ||
c23b5a69 LB |
1173 | #define MWL8K_TXD_SUCCESS(status) \ |
1174 | ((status) & (MWL8K_TXD_STATUS_OK | \ | |
1175 | MWL8K_TXD_STATUS_OK_RETRY | \ | |
1176 | MWL8K_TXD_STATUS_OK_MORE_RETRY)) | |
a66098da LB |
1177 | |
1178 | static void mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int force) | |
1179 | { | |
1180 | struct mwl8k_priv *priv = hw->priv; | |
1181 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1182 | int wake = 0; | |
1183 | ||
1184 | while (txq->tx_stats.len > 0) { | |
1185 | int tx; | |
a66098da LB |
1186 | struct mwl8k_tx_desc *tx_desc; |
1187 | unsigned long addr; | |
ce9e2e1b | 1188 | int size; |
a66098da LB |
1189 | struct sk_buff *skb; |
1190 | struct ieee80211_tx_info *info; | |
1191 | u32 status; | |
1192 | ||
a66098da LB |
1193 | tx = txq->tx_head; |
1194 | tx_desc = txq->tx_desc_area + tx; | |
1195 | ||
1196 | status = le32_to_cpu(tx_desc->status); | |
1197 | ||
1198 | if (status & MWL8K_TXD_STATUS_FW_OWNED) { | |
1199 | if (!force) | |
1200 | break; | |
1201 | tx_desc->status &= | |
1202 | ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED); | |
1203 | } | |
1204 | ||
1205 | txq->tx_head = (tx + 1) % MWL8K_TX_DESCS; | |
1206 | BUG_ON(txq->tx_stats.len == 0); | |
1207 | txq->tx_stats.len--; | |
1208 | priv->pending_tx_pkts--; | |
1209 | ||
1210 | addr = le32_to_cpu(tx_desc->pkt_phys_addr); | |
ce9e2e1b | 1211 | size = le16_to_cpu(tx_desc->pkt_len); |
76266b2a LB |
1212 | skb = txq->tx_skb[tx]; |
1213 | txq->tx_skb[tx] = NULL; | |
a66098da LB |
1214 | |
1215 | BUG_ON(skb == NULL); | |
1216 | pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE); | |
1217 | ||
76266b2a | 1218 | mwl8k_remove_dma_header(skb); |
a66098da LB |
1219 | |
1220 | /* Mark descriptor as unused */ | |
1221 | tx_desc->pkt_phys_addr = 0; | |
1222 | tx_desc->pkt_len = 0; | |
1223 | ||
a66098da LB |
1224 | info = IEEE80211_SKB_CB(skb); |
1225 | ieee80211_tx_info_clear_status(info); | |
ce9e2e1b | 1226 | if (MWL8K_TXD_SUCCESS(status)) |
a66098da | 1227 | info->flags |= IEEE80211_TX_STAT_ACK; |
a66098da LB |
1228 | |
1229 | ieee80211_tx_status_irqsafe(hw, skb); | |
1230 | ||
618952a7 | 1231 | wake = 1; |
a66098da LB |
1232 | } |
1233 | ||
618952a7 | 1234 | if (wake && priv->radio_on && !mutex_is_locked(&priv->fw_mutex)) |
a66098da LB |
1235 | ieee80211_wake_queue(hw, index); |
1236 | } | |
1237 | ||
1238 | /* must be called only when the card's transmit is completely halted */ | |
1239 | static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index) | |
1240 | { | |
1241 | struct mwl8k_priv *priv = hw->priv; | |
1242 | struct mwl8k_tx_queue *txq = priv->txq + index; | |
1243 | ||
1244 | mwl8k_txq_reclaim(hw, index, 1); | |
1245 | ||
1246 | kfree(txq->tx_skb); | |
1247 | txq->tx_skb = NULL; | |
1248 | ||
1249 | pci_free_consistent(priv->pdev, | |
1250 | MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc), | |
1251 | txq->tx_desc_area, txq->tx_desc_dma); | |
1252 | txq->tx_desc_area = NULL; | |
1253 | } | |
1254 | ||
1255 | static int | |
1256 | mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb) | |
1257 | { | |
1258 | struct mwl8k_priv *priv = hw->priv; | |
1259 | struct ieee80211_tx_info *tx_info; | |
23b33906 | 1260 | struct mwl8k_vif *mwl8k_vif; |
a66098da LB |
1261 | struct ieee80211_hdr *wh; |
1262 | struct mwl8k_tx_queue *txq; | |
1263 | struct mwl8k_tx_desc *tx; | |
a66098da | 1264 | dma_addr_t dma; |
23b33906 LB |
1265 | u32 txstatus; |
1266 | u8 txdatarate; | |
1267 | u16 qos; | |
a66098da | 1268 | |
23b33906 LB |
1269 | wh = (struct ieee80211_hdr *)skb->data; |
1270 | if (ieee80211_is_data_qos(wh->frame_control)) | |
1271 | qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh))); | |
1272 | else | |
1273 | qos = 0; | |
a66098da | 1274 | |
76266b2a | 1275 | mwl8k_add_dma_header(skb); |
23b33906 | 1276 | wh = &((struct mwl8k_dma_data *)skb->data)->wh; |
a66098da LB |
1277 | |
1278 | tx_info = IEEE80211_SKB_CB(skb); | |
1279 | mwl8k_vif = MWL8K_VIF(tx_info->control.vif); | |
a66098da LB |
1280 | |
1281 | if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { | |
1282 | u16 seqno = mwl8k_vif->seqno; | |
23b33906 | 1283 | |
a66098da LB |
1284 | wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); |
1285 | wh->seq_ctrl |= cpu_to_le16(seqno << 4); | |
1286 | mwl8k_vif->seqno = seqno++ % 4096; | |
1287 | } | |
1288 | ||
23b33906 LB |
1289 | /* Setup firmware control bit fields for each frame type. */ |
1290 | txstatus = 0; | |
1291 | txdatarate = 0; | |
1292 | if (ieee80211_is_mgmt(wh->frame_control) || | |
1293 | ieee80211_is_ctl(wh->frame_control)) { | |
1294 | txdatarate = 0; | |
1295 | qos = mwl8k_qos_setbit_eosp(qos); | |
1296 | /* Set Queue size to unspecified */ | |
1297 | qos = mwl8k_qos_setbit_qlen(qos, 0xff); | |
1298 | } else if (ieee80211_is_data(wh->frame_control)) { | |
1299 | txdatarate = 1; | |
1300 | if (is_multicast_ether_addr(wh->addr1)) | |
1301 | txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX; | |
1302 | ||
1303 | /* Send pkt in an aggregate if AMPDU frame. */ | |
1304 | if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) | |
1305 | qos = mwl8k_qos_setbit_ack(qos, | |
1306 | MWL8K_TXD_ACK_POLICY_BLOCKACK); | |
1307 | else | |
1308 | qos = mwl8k_qos_setbit_ack(qos, | |
1309 | MWL8K_TXD_ACK_POLICY_NORMAL); | |
1310 | ||
1311 | if (qos & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT) | |
1312 | qos = mwl8k_qos_setbit_amsdu(qos); | |
1313 | } | |
a66098da LB |
1314 | |
1315 | dma = pci_map_single(priv->pdev, skb->data, | |
1316 | skb->len, PCI_DMA_TODEVICE); | |
1317 | ||
1318 | if (pci_dma_mapping_error(priv->pdev, dma)) { | |
1319 | printk(KERN_DEBUG "%s: failed to dma map skb, " | |
1320 | "dropping TX frame.\n", priv->name); | |
23b33906 | 1321 | dev_kfree_skb(skb); |
a66098da LB |
1322 | return NETDEV_TX_OK; |
1323 | } | |
1324 | ||
23b33906 | 1325 | spin_lock_bh(&priv->tx_lock); |
a66098da | 1326 | |
23b33906 | 1327 | txq = priv->txq + index; |
a66098da | 1328 | |
23b33906 LB |
1329 | BUG_ON(txq->tx_skb[txq->tx_tail] != NULL); |
1330 | txq->tx_skb[txq->tx_tail] = skb; | |
a66098da | 1331 | |
23b33906 LB |
1332 | tx = txq->tx_desc_area + txq->tx_tail; |
1333 | tx->data_rate = txdatarate; | |
1334 | tx->tx_priority = index; | |
a66098da | 1335 | tx->qos_control = cpu_to_le16(qos); |
a66098da LB |
1336 | tx->pkt_phys_addr = cpu_to_le32(dma); |
1337 | tx->pkt_len = cpu_to_le16(skb->len); | |
23b33906 LB |
1338 | tx->rate_info = 0; |
1339 | tx->peer_id = mwl8k_vif->peer_id; | |
a66098da | 1340 | wmb(); |
23b33906 LB |
1341 | tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus); |
1342 | ||
1343 | txq->tx_stats.count++; | |
a66098da LB |
1344 | txq->tx_stats.len++; |
1345 | priv->pending_tx_pkts++; | |
a66098da | 1346 | |
23b33906 | 1347 | txq->tx_tail++; |
a66098da LB |
1348 | if (txq->tx_tail == MWL8K_TX_DESCS) |
1349 | txq->tx_tail = 0; | |
23b33906 | 1350 | |
a66098da LB |
1351 | if (txq->tx_head == txq->tx_tail) |
1352 | ieee80211_stop_queue(hw, index); | |
1353 | ||
23b33906 | 1354 | mwl8k_tx_start(priv); |
a66098da LB |
1355 | |
1356 | spin_unlock_bh(&priv->tx_lock); | |
1357 | ||
1358 | return NETDEV_TX_OK; | |
1359 | } | |
1360 | ||
1361 | ||
618952a7 LB |
1362 | /* |
1363 | * Firmware access. | |
1364 | * | |
1365 | * We have the following requirements for issuing firmware commands: | |
1366 | * - Some commands require that the packet transmit path is idle when | |
1367 | * the command is issued. (For simplicity, we'll just quiesce the | |
1368 | * transmit path for every command.) | |
1369 | * - There are certain sequences of commands that need to be issued to | |
1370 | * the hardware sequentially, with no other intervening commands. | |
1371 | * | |
1372 | * This leads to an implementation of a "firmware lock" as a mutex that | |
1373 | * can be taken recursively, and which is taken by both the low-level | |
1374 | * command submission function (mwl8k_post_cmd) as well as any users of | |
1375 | * that function that require issuing of an atomic sequence of commands, | |
1376 | * and quiesces the transmit path whenever it's taken. | |
1377 | */ | |
1378 | static int mwl8k_fw_lock(struct ieee80211_hw *hw) | |
1379 | { | |
1380 | struct mwl8k_priv *priv = hw->priv; | |
1381 | ||
1382 | if (priv->fw_mutex_owner != current) { | |
1383 | int rc; | |
1384 | ||
1385 | mutex_lock(&priv->fw_mutex); | |
1386 | ieee80211_stop_queues(hw); | |
1387 | ||
1388 | rc = mwl8k_tx_wait_empty(hw); | |
1389 | if (rc) { | |
1390 | ieee80211_wake_queues(hw); | |
1391 | mutex_unlock(&priv->fw_mutex); | |
1392 | ||
1393 | return rc; | |
1394 | } | |
1395 | ||
1396 | priv->fw_mutex_owner = current; | |
1397 | } | |
1398 | ||
1399 | priv->fw_mutex_depth++; | |
1400 | ||
1401 | return 0; | |
1402 | } | |
1403 | ||
1404 | static void mwl8k_fw_unlock(struct ieee80211_hw *hw) | |
1405 | { | |
1406 | struct mwl8k_priv *priv = hw->priv; | |
1407 | ||
1408 | if (!--priv->fw_mutex_depth) { | |
1409 | ieee80211_wake_queues(hw); | |
1410 | priv->fw_mutex_owner = NULL; | |
1411 | mutex_unlock(&priv->fw_mutex); | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | ||
a66098da LB |
1416 | /* |
1417 | * Command processing. | |
1418 | */ | |
1419 | ||
1420 | /* Timeout firmware commands after 2000ms */ | |
1421 | #define MWL8K_CMD_TIMEOUT_MS 2000 | |
1422 | ||
1423 | static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd) | |
1424 | { | |
1425 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
1426 | struct mwl8k_priv *priv = hw->priv; | |
1427 | void __iomem *regs = priv->regs; | |
1428 | dma_addr_t dma_addr; | |
1429 | unsigned int dma_size; | |
1430 | int rc; | |
a66098da LB |
1431 | unsigned long timeout = 0; |
1432 | u8 buf[32]; | |
1433 | ||
1434 | cmd->result = 0xFFFF; | |
1435 | dma_size = le16_to_cpu(cmd->length); | |
1436 | dma_addr = pci_map_single(priv->pdev, cmd, dma_size, | |
1437 | PCI_DMA_BIDIRECTIONAL); | |
1438 | if (pci_dma_mapping_error(priv->pdev, dma_addr)) | |
1439 | return -ENOMEM; | |
1440 | ||
618952a7 LB |
1441 | rc = mwl8k_fw_lock(hw); |
1442 | if (rc) | |
1443 | return rc; | |
a66098da | 1444 | |
a66098da LB |
1445 | priv->hostcmd_wait = &cmd_wait; |
1446 | iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR); | |
1447 | iowrite32(MWL8K_H2A_INT_DOORBELL, | |
1448 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
1449 | iowrite32(MWL8K_H2A_INT_DUMMY, | |
1450 | regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS); | |
a66098da LB |
1451 | |
1452 | timeout = wait_for_completion_timeout(&cmd_wait, | |
1453 | msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS)); | |
1454 | ||
618952a7 LB |
1455 | priv->hostcmd_wait = NULL; |
1456 | ||
1457 | mwl8k_fw_unlock(hw); | |
1458 | ||
37055bd4 LB |
1459 | pci_unmap_single(priv->pdev, dma_addr, dma_size, |
1460 | PCI_DMA_BIDIRECTIONAL); | |
1461 | ||
a66098da | 1462 | if (!timeout) { |
a66098da LB |
1463 | printk(KERN_ERR "%s: Command %s timeout after %u ms\n", |
1464 | priv->name, | |
1465 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
1466 | MWL8K_CMD_TIMEOUT_MS); | |
1467 | rc = -ETIMEDOUT; | |
1468 | } else { | |
ce9e2e1b | 1469 | rc = cmd->result ? -EINVAL : 0; |
a66098da LB |
1470 | if (rc) |
1471 | printk(KERN_ERR "%s: Command %s error 0x%x\n", | |
1472 | priv->name, | |
1473 | mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), | |
ce9e2e1b | 1474 | cmd->result); |
a66098da LB |
1475 | } |
1476 | ||
a66098da LB |
1477 | return rc; |
1478 | } | |
1479 | ||
1480 | /* | |
1481 | * GET_HW_SPEC. | |
1482 | */ | |
1483 | struct mwl8k_cmd_get_hw_spec { | |
1484 | struct mwl8k_cmd_pkt header; | |
1485 | __u8 hw_rev; | |
1486 | __u8 host_interface; | |
1487 | __le16 num_mcaddrs; | |
d89173f2 | 1488 | __u8 perm_addr[ETH_ALEN]; |
a66098da LB |
1489 | __le16 region_code; |
1490 | __le32 fw_rev; | |
1491 | __le32 ps_cookie; | |
1492 | __le32 caps; | |
1493 | __u8 mcs_bitmap[16]; | |
1494 | __le32 rx_queue_ptr; | |
1495 | __le32 num_tx_queues; | |
1496 | __le32 tx_queue_ptrs[MWL8K_TX_QUEUES]; | |
1497 | __le32 caps2; | |
1498 | __le32 num_tx_desc_per_queue; | |
1499 | __le32 total_rx_desc; | |
1500 | } __attribute__((packed)); | |
1501 | ||
1502 | static int mwl8k_cmd_get_hw_spec(struct ieee80211_hw *hw) | |
1503 | { | |
1504 | struct mwl8k_priv *priv = hw->priv; | |
1505 | struct mwl8k_cmd_get_hw_spec *cmd; | |
1506 | int rc; | |
1507 | int i; | |
1508 | ||
1509 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1510 | if (cmd == NULL) | |
1511 | return -ENOMEM; | |
1512 | ||
1513 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC); | |
1514 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1515 | ||
1516 | memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr)); | |
1517 | cmd->ps_cookie = cpu_to_le32(priv->cookie_dma); | |
1518 | cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rx_desc_dma); | |
4ff6432e | 1519 | cmd->num_tx_queues = cpu_to_le32(MWL8K_TX_QUEUES); |
a66098da LB |
1520 | for (i = 0; i < MWL8K_TX_QUEUES; i++) |
1521 | cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].tx_desc_dma); | |
4ff6432e LB |
1522 | cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS); |
1523 | cmd->total_rx_desc = cpu_to_le32(MWL8K_RX_DESCS); | |
a66098da LB |
1524 | |
1525 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1526 | ||
1527 | if (!rc) { | |
1528 | SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr); | |
1529 | priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs); | |
4ff6432e | 1530 | priv->fw_rev = le32_to_cpu(cmd->fw_rev); |
a66098da | 1531 | priv->hw_rev = cmd->hw_rev; |
a66098da LB |
1532 | } |
1533 | ||
1534 | kfree(cmd); | |
1535 | return rc; | |
1536 | } | |
1537 | ||
1538 | /* | |
1539 | * CMD_MAC_MULTICAST_ADR. | |
1540 | */ | |
1541 | struct mwl8k_cmd_mac_multicast_adr { | |
1542 | struct mwl8k_cmd_pkt header; | |
1543 | __le16 action; | |
1544 | __le16 numaddr; | |
ce9e2e1b | 1545 | __u8 addr[0][ETH_ALEN]; |
a66098da LB |
1546 | }; |
1547 | ||
1548 | #define MWL8K_ENABLE_RX_MULTICAST 0x000F | |
ce9e2e1b | 1549 | |
e81cd2d6 LB |
1550 | static struct mwl8k_cmd_pkt * |
1551 | __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, | |
1552 | int mc_count, struct dev_addr_list *mclist) | |
a66098da | 1553 | { |
e81cd2d6 | 1554 | struct mwl8k_priv *priv = hw->priv; |
a66098da | 1555 | struct mwl8k_cmd_mac_multicast_adr *cmd; |
e81cd2d6 LB |
1556 | int size; |
1557 | int i; | |
1558 | ||
1559 | if (mc_count > priv->num_mcaddrs) | |
1560 | mc_count = priv->num_mcaddrs; | |
1561 | ||
1562 | size = sizeof(*cmd) + mc_count * ETH_ALEN; | |
ce9e2e1b | 1563 | |
e81cd2d6 | 1564 | cmd = kzalloc(size, GFP_ATOMIC); |
a66098da | 1565 | if (cmd == NULL) |
e81cd2d6 | 1566 | return NULL; |
a66098da LB |
1567 | |
1568 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR); | |
1569 | cmd->header.length = cpu_to_le16(size); | |
1570 | cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST); | |
1571 | cmd->numaddr = cpu_to_le16(mc_count); | |
ce9e2e1b | 1572 | |
e81cd2d6 | 1573 | for (i = 0; i < mc_count && mclist; i++) { |
d89173f2 | 1574 | if (mclist->da_addrlen != ETH_ALEN) { |
e81cd2d6 LB |
1575 | kfree(cmd); |
1576 | return NULL; | |
a66098da | 1577 | } |
e81cd2d6 | 1578 | memcpy(cmd->addr[i], mclist->da_addr, ETH_ALEN); |
a66098da LB |
1579 | mclist = mclist->next; |
1580 | } | |
1581 | ||
e81cd2d6 | 1582 | return &cmd->header; |
a66098da LB |
1583 | } |
1584 | ||
1585 | /* | |
1586 | * CMD_802_11_GET_STAT. | |
1587 | */ | |
1588 | struct mwl8k_cmd_802_11_get_stat { | |
1589 | struct mwl8k_cmd_pkt header; | |
1590 | __le16 action; | |
1591 | __le32 stats[64]; | |
1592 | } __attribute__((packed)); | |
1593 | ||
1594 | #define MWL8K_STAT_ACK_FAILURE 9 | |
1595 | #define MWL8K_STAT_RTS_FAILURE 12 | |
1596 | #define MWL8K_STAT_FCS_ERROR 24 | |
1597 | #define MWL8K_STAT_RTS_SUCCESS 11 | |
1598 | ||
1599 | static int mwl8k_cmd_802_11_get_stat(struct ieee80211_hw *hw, | |
1600 | struct ieee80211_low_level_stats *stats) | |
1601 | { | |
1602 | struct mwl8k_cmd_802_11_get_stat *cmd; | |
1603 | int rc; | |
1604 | ||
1605 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1606 | if (cmd == NULL) | |
1607 | return -ENOMEM; | |
1608 | ||
1609 | cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT); | |
1610 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1611 | cmd->action = cpu_to_le16(MWL8K_CMD_GET); | |
1612 | ||
1613 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1614 | if (!rc) { | |
1615 | stats->dot11ACKFailureCount = | |
1616 | le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]); | |
1617 | stats->dot11RTSFailureCount = | |
1618 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]); | |
1619 | stats->dot11FCSErrorCount = | |
1620 | le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]); | |
1621 | stats->dot11RTSSuccessCount = | |
1622 | le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]); | |
1623 | } | |
1624 | kfree(cmd); | |
1625 | ||
1626 | return rc; | |
1627 | } | |
1628 | ||
1629 | /* | |
1630 | * CMD_802_11_RADIO_CONTROL. | |
1631 | */ | |
1632 | struct mwl8k_cmd_802_11_radio_control { | |
1633 | struct mwl8k_cmd_pkt header; | |
1634 | __le16 action; | |
1635 | __le16 control; | |
1636 | __le16 radio_on; | |
1637 | } __attribute__((packed)); | |
1638 | ||
c46563b7 LB |
1639 | static int |
1640 | mwl8k_cmd_802_11_radio_control(struct ieee80211_hw *hw, bool enable, bool force) | |
a66098da LB |
1641 | { |
1642 | struct mwl8k_priv *priv = hw->priv; | |
1643 | struct mwl8k_cmd_802_11_radio_control *cmd; | |
1644 | int rc; | |
1645 | ||
c46563b7 | 1646 | if (enable == priv->radio_on && !force) |
a66098da LB |
1647 | return 0; |
1648 | ||
a66098da LB |
1649 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
1650 | if (cmd == NULL) | |
1651 | return -ENOMEM; | |
1652 | ||
1653 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL); | |
1654 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1655 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
68ce3884 | 1656 | cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1); |
a66098da LB |
1657 | cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000); |
1658 | ||
1659 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1660 | kfree(cmd); | |
1661 | ||
1662 | if (!rc) | |
c46563b7 | 1663 | priv->radio_on = enable; |
a66098da LB |
1664 | |
1665 | return rc; | |
1666 | } | |
1667 | ||
c46563b7 LB |
1668 | static int mwl8k_cmd_802_11_radio_disable(struct ieee80211_hw *hw) |
1669 | { | |
1670 | return mwl8k_cmd_802_11_radio_control(hw, 0, 0); | |
1671 | } | |
1672 | ||
1673 | static int mwl8k_cmd_802_11_radio_enable(struct ieee80211_hw *hw) | |
1674 | { | |
1675 | return mwl8k_cmd_802_11_radio_control(hw, 1, 0); | |
1676 | } | |
1677 | ||
a66098da LB |
1678 | static int |
1679 | mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble) | |
1680 | { | |
1681 | struct mwl8k_priv *priv; | |
1682 | ||
1683 | if (hw == NULL || hw->priv == NULL) | |
1684 | return -EINVAL; | |
1685 | priv = hw->priv; | |
1686 | ||
68ce3884 | 1687 | priv->radio_short_preamble = short_preamble; |
a66098da | 1688 | |
c46563b7 | 1689 | return mwl8k_cmd_802_11_radio_control(hw, 1, 1); |
a66098da LB |
1690 | } |
1691 | ||
1692 | /* | |
1693 | * CMD_802_11_RF_TX_POWER. | |
1694 | */ | |
1695 | #define MWL8K_TX_POWER_LEVEL_TOTAL 8 | |
1696 | ||
1697 | struct mwl8k_cmd_802_11_rf_tx_power { | |
1698 | struct mwl8k_cmd_pkt header; | |
1699 | __le16 action; | |
1700 | __le16 support_level; | |
1701 | __le16 current_level; | |
1702 | __le16 reserved; | |
1703 | __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL]; | |
1704 | } __attribute__((packed)); | |
1705 | ||
1706 | static int mwl8k_cmd_802_11_rf_tx_power(struct ieee80211_hw *hw, int dBm) | |
1707 | { | |
1708 | struct mwl8k_cmd_802_11_rf_tx_power *cmd; | |
1709 | int rc; | |
1710 | ||
1711 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1712 | if (cmd == NULL) | |
1713 | return -ENOMEM; | |
1714 | ||
1715 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER); | |
1716 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1717 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1718 | cmd->support_level = cpu_to_le16(dBm); | |
1719 | ||
1720 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1721 | kfree(cmd); | |
1722 | ||
1723 | return rc; | |
1724 | } | |
1725 | ||
1726 | /* | |
1727 | * CMD_SET_PRE_SCAN. | |
1728 | */ | |
1729 | struct mwl8k_cmd_set_pre_scan { | |
1730 | struct mwl8k_cmd_pkt header; | |
1731 | } __attribute__((packed)); | |
1732 | ||
1733 | static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw) | |
1734 | { | |
1735 | struct mwl8k_cmd_set_pre_scan *cmd; | |
1736 | int rc; | |
1737 | ||
1738 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1739 | if (cmd == NULL) | |
1740 | return -ENOMEM; | |
1741 | ||
1742 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN); | |
1743 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1744 | ||
1745 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1746 | kfree(cmd); | |
1747 | ||
1748 | return rc; | |
1749 | } | |
1750 | ||
1751 | /* | |
1752 | * CMD_SET_POST_SCAN. | |
1753 | */ | |
1754 | struct mwl8k_cmd_set_post_scan { | |
1755 | struct mwl8k_cmd_pkt header; | |
1756 | __le32 isibss; | |
d89173f2 | 1757 | __u8 bssid[ETH_ALEN]; |
a66098da LB |
1758 | } __attribute__((packed)); |
1759 | ||
1760 | static int | |
ce9e2e1b | 1761 | mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, __u8 *mac) |
a66098da LB |
1762 | { |
1763 | struct mwl8k_cmd_set_post_scan *cmd; | |
1764 | int rc; | |
1765 | ||
1766 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1767 | if (cmd == NULL) | |
1768 | return -ENOMEM; | |
1769 | ||
1770 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN); | |
1771 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1772 | cmd->isibss = 0; | |
d89173f2 | 1773 | memcpy(cmd->bssid, mac, ETH_ALEN); |
a66098da LB |
1774 | |
1775 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1776 | kfree(cmd); | |
1777 | ||
1778 | return rc; | |
1779 | } | |
1780 | ||
1781 | /* | |
1782 | * CMD_SET_RF_CHANNEL. | |
1783 | */ | |
1784 | struct mwl8k_cmd_set_rf_channel { | |
1785 | struct mwl8k_cmd_pkt header; | |
1786 | __le16 action; | |
1787 | __u8 current_channel; | |
1788 | __le32 channel_flags; | |
1789 | } __attribute__((packed)); | |
1790 | ||
1791 | static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw, | |
1792 | struct ieee80211_channel *channel) | |
1793 | { | |
1794 | struct mwl8k_cmd_set_rf_channel *cmd; | |
1795 | int rc; | |
1796 | ||
1797 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1798 | if (cmd == NULL) | |
1799 | return -ENOMEM; | |
1800 | ||
1801 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL); | |
1802 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1803 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1804 | cmd->current_channel = channel->hw_value; | |
1805 | if (channel->band == IEEE80211_BAND_2GHZ) | |
1806 | cmd->channel_flags = cpu_to_le32(0x00000081); | |
1807 | else | |
1808 | cmd->channel_flags = cpu_to_le32(0x00000000); | |
1809 | ||
1810 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1811 | kfree(cmd); | |
1812 | ||
1813 | return rc; | |
1814 | } | |
1815 | ||
1816 | /* | |
1817 | * CMD_SET_SLOT. | |
1818 | */ | |
1819 | struct mwl8k_cmd_set_slot { | |
1820 | struct mwl8k_cmd_pkt header; | |
1821 | __le16 action; | |
1822 | __u8 short_slot; | |
1823 | } __attribute__((packed)); | |
1824 | ||
5539bb51 | 1825 | static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time) |
a66098da LB |
1826 | { |
1827 | struct mwl8k_cmd_set_slot *cmd; | |
1828 | int rc; | |
1829 | ||
1830 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1831 | if (cmd == NULL) | |
1832 | return -ENOMEM; | |
1833 | ||
1834 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT); | |
1835 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1836 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
5539bb51 | 1837 | cmd->short_slot = short_slot_time; |
a66098da LB |
1838 | |
1839 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1840 | kfree(cmd); | |
1841 | ||
1842 | return rc; | |
1843 | } | |
1844 | ||
1845 | /* | |
1846 | * CMD_MIMO_CONFIG. | |
1847 | */ | |
1848 | struct mwl8k_cmd_mimo_config { | |
1849 | struct mwl8k_cmd_pkt header; | |
1850 | __le32 action; | |
1851 | __u8 rx_antenna_map; | |
1852 | __u8 tx_antenna_map; | |
1853 | } __attribute__((packed)); | |
1854 | ||
1855 | static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx) | |
1856 | { | |
1857 | struct mwl8k_cmd_mimo_config *cmd; | |
1858 | int rc; | |
1859 | ||
1860 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1861 | if (cmd == NULL) | |
1862 | return -ENOMEM; | |
1863 | ||
1864 | cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG); | |
1865 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1866 | cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET); | |
1867 | cmd->rx_antenna_map = rx; | |
1868 | cmd->tx_antenna_map = tx; | |
1869 | ||
1870 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1871 | kfree(cmd); | |
1872 | ||
1873 | return rc; | |
1874 | } | |
1875 | ||
1876 | /* | |
1877 | * CMD_ENABLE_SNIFFER. | |
1878 | */ | |
1879 | struct mwl8k_cmd_enable_sniffer { | |
1880 | struct mwl8k_cmd_pkt header; | |
1881 | __le32 action; | |
1882 | } __attribute__((packed)); | |
1883 | ||
1884 | static int mwl8k_enable_sniffer(struct ieee80211_hw *hw, bool enable) | |
1885 | { | |
1886 | struct mwl8k_cmd_enable_sniffer *cmd; | |
1887 | int rc; | |
1888 | ||
1889 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1890 | if (cmd == NULL) | |
1891 | return -ENOMEM; | |
1892 | ||
1893 | cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER); | |
1894 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
ce9e2e1b | 1895 | cmd->action = cpu_to_le32(!!enable); |
a66098da LB |
1896 | |
1897 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1898 | kfree(cmd); | |
1899 | ||
1900 | return rc; | |
1901 | } | |
1902 | ||
1903 | /* | |
ce9e2e1b | 1904 | * CMD_SET_RATEADAPT_MODE. |
a66098da LB |
1905 | */ |
1906 | struct mwl8k_cmd_set_rate_adapt_mode { | |
1907 | struct mwl8k_cmd_pkt header; | |
1908 | __le16 action; | |
1909 | __le16 mode; | |
1910 | } __attribute__((packed)); | |
1911 | ||
1912 | static int mwl8k_cmd_setrateadaptmode(struct ieee80211_hw *hw, __u16 mode) | |
1913 | { | |
1914 | struct mwl8k_cmd_set_rate_adapt_mode *cmd; | |
1915 | int rc; | |
1916 | ||
1917 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1918 | if (cmd == NULL) | |
1919 | return -ENOMEM; | |
1920 | ||
1921 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE); | |
1922 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1923 | cmd->action = cpu_to_le16(MWL8K_CMD_SET); | |
1924 | cmd->mode = cpu_to_le16(mode); | |
1925 | ||
1926 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1927 | kfree(cmd); | |
1928 | ||
1929 | return rc; | |
1930 | } | |
1931 | ||
1932 | /* | |
1933 | * CMD_SET_WMM_MODE. | |
1934 | */ | |
1935 | struct mwl8k_cmd_set_wmm { | |
1936 | struct mwl8k_cmd_pkt header; | |
1937 | __le16 action; | |
1938 | } __attribute__((packed)); | |
1939 | ||
1940 | static int mwl8k_set_wmm(struct ieee80211_hw *hw, bool enable) | |
1941 | { | |
1942 | struct mwl8k_priv *priv = hw->priv; | |
1943 | struct mwl8k_cmd_set_wmm *cmd; | |
1944 | int rc; | |
1945 | ||
1946 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1947 | if (cmd == NULL) | |
1948 | return -ENOMEM; | |
1949 | ||
1950 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE); | |
1951 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
0439b1f5 | 1952 | cmd->action = cpu_to_le16(!!enable); |
a66098da LB |
1953 | |
1954 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1955 | kfree(cmd); | |
1956 | ||
1957 | if (!rc) | |
0439b1f5 | 1958 | priv->wmm_enabled = enable; |
a66098da LB |
1959 | |
1960 | return rc; | |
1961 | } | |
1962 | ||
1963 | /* | |
1964 | * CMD_SET_RTS_THRESHOLD. | |
1965 | */ | |
1966 | struct mwl8k_cmd_rts_threshold { | |
1967 | struct mwl8k_cmd_pkt header; | |
1968 | __le16 action; | |
1969 | __le16 threshold; | |
1970 | } __attribute__((packed)); | |
1971 | ||
1972 | static int mwl8k_rts_threshold(struct ieee80211_hw *hw, | |
1973 | u16 action, u16 *threshold) | |
1974 | { | |
1975 | struct mwl8k_cmd_rts_threshold *cmd; | |
1976 | int rc; | |
1977 | ||
1978 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
1979 | if (cmd == NULL) | |
1980 | return -ENOMEM; | |
1981 | ||
1982 | cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD); | |
1983 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
1984 | cmd->action = cpu_to_le16(action); | |
1985 | cmd->threshold = cpu_to_le16(*threshold); | |
1986 | ||
1987 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
1988 | kfree(cmd); | |
1989 | ||
1990 | return rc; | |
1991 | } | |
1992 | ||
1993 | /* | |
1994 | * CMD_SET_EDCA_PARAMS. | |
1995 | */ | |
1996 | struct mwl8k_cmd_set_edca_params { | |
1997 | struct mwl8k_cmd_pkt header; | |
1998 | ||
1999 | /* See MWL8K_SET_EDCA_XXX below */ | |
2000 | __le16 action; | |
2001 | ||
2002 | /* TX opportunity in units of 32 us */ | |
2003 | __le16 txop; | |
2004 | ||
2005 | /* Log exponent of max contention period: 0...15*/ | |
2006 | __u8 log_cw_max; | |
2007 | ||
2008 | /* Log exponent of min contention period: 0...15 */ | |
2009 | __u8 log_cw_min; | |
2010 | ||
2011 | /* Adaptive interframe spacing in units of 32us */ | |
2012 | __u8 aifs; | |
2013 | ||
2014 | /* TX queue to configure */ | |
2015 | __u8 txq; | |
2016 | } __attribute__((packed)); | |
2017 | ||
a66098da LB |
2018 | #define MWL8K_SET_EDCA_CW 0x01 |
2019 | #define MWL8K_SET_EDCA_TXOP 0x02 | |
2020 | #define MWL8K_SET_EDCA_AIFS 0x04 | |
2021 | ||
2022 | #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \ | |
2023 | MWL8K_SET_EDCA_TXOP | \ | |
2024 | MWL8K_SET_EDCA_AIFS) | |
2025 | ||
2026 | static int | |
2027 | mwl8k_set_edca_params(struct ieee80211_hw *hw, __u8 qnum, | |
2028 | __u16 cw_min, __u16 cw_max, | |
2029 | __u8 aifs, __u16 txop) | |
2030 | { | |
2031 | struct mwl8k_cmd_set_edca_params *cmd; | |
a66098da LB |
2032 | int rc; |
2033 | ||
2034 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2035 | if (cmd == NULL) | |
2036 | return -ENOMEM; | |
2037 | ||
a66098da LB |
2038 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS); |
2039 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
a66098da LB |
2040 | cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL); |
2041 | cmd->txop = cpu_to_le16(txop); | |
ce9e2e1b LB |
2042 | cmd->log_cw_max = (u8)ilog2(cw_max + 1); |
2043 | cmd->log_cw_min = (u8)ilog2(cw_min + 1); | |
a66098da LB |
2044 | cmd->aifs = aifs; |
2045 | cmd->txq = qnum; | |
2046 | ||
2047 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2048 | kfree(cmd); | |
2049 | ||
2050 | return rc; | |
2051 | } | |
2052 | ||
2053 | /* | |
2054 | * CMD_FINALIZE_JOIN. | |
2055 | */ | |
2056 | ||
2057 | /* FJ beacon buffer size is compiled into the firmware. */ | |
2058 | #define MWL8K_FJ_BEACON_MAXLEN 128 | |
2059 | ||
2060 | struct mwl8k_cmd_finalize_join { | |
2061 | struct mwl8k_cmd_pkt header; | |
2062 | __le32 sleep_interval; /* Number of beacon periods to sleep */ | |
2063 | __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN]; | |
2064 | } __attribute__((packed)); | |
2065 | ||
2066 | static int mwl8k_finalize_join(struct ieee80211_hw *hw, void *frame, | |
2067 | __u16 framelen, __u16 dtim) | |
2068 | { | |
2069 | struct mwl8k_cmd_finalize_join *cmd; | |
2070 | struct ieee80211_mgmt *payload = frame; | |
2071 | u16 hdrlen; | |
2072 | u32 payload_len; | |
2073 | int rc; | |
2074 | ||
2075 | if (frame == NULL) | |
2076 | return -EINVAL; | |
2077 | ||
2078 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2079 | if (cmd == NULL) | |
2080 | return -ENOMEM; | |
2081 | ||
2082 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN); | |
2083 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
ce9e2e1b | 2084 | cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1); |
a66098da LB |
2085 | |
2086 | hdrlen = ieee80211_hdrlen(payload->frame_control); | |
2087 | ||
2088 | payload_len = framelen > hdrlen ? framelen - hdrlen : 0; | |
2089 | ||
2090 | /* XXX TBD Might just have to abort and return an error */ | |
2091 | if (payload_len > MWL8K_FJ_BEACON_MAXLEN) | |
2092 | printk(KERN_ERR "%s(): WARNING: Incomplete beacon " | |
2093 | "sent to firmware. Sz=%u MAX=%u\n", __func__, | |
2094 | payload_len, MWL8K_FJ_BEACON_MAXLEN); | |
2095 | ||
ce9e2e1b LB |
2096 | if (payload_len > MWL8K_FJ_BEACON_MAXLEN) |
2097 | payload_len = MWL8K_FJ_BEACON_MAXLEN; | |
a66098da LB |
2098 | |
2099 | if (payload && payload_len) | |
2100 | memcpy(cmd->beacon_data, &payload->u.beacon, payload_len); | |
2101 | ||
2102 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2103 | kfree(cmd); | |
2104 | return rc; | |
2105 | } | |
2106 | ||
2107 | /* | |
2108 | * CMD_UPDATE_STADB. | |
2109 | */ | |
2110 | struct mwl8k_cmd_update_sta_db { | |
2111 | struct mwl8k_cmd_pkt header; | |
2112 | ||
2113 | /* See STADB_ACTION_TYPE */ | |
2114 | __le32 action; | |
2115 | ||
2116 | /* Peer MAC address */ | |
d89173f2 | 2117 | __u8 peer_addr[ETH_ALEN]; |
a66098da LB |
2118 | |
2119 | __le32 reserved; | |
2120 | ||
2121 | /* Peer info - valid during add/update. */ | |
2122 | struct peer_capability_info peer_info; | |
2123 | } __attribute__((packed)); | |
2124 | ||
2125 | static int mwl8k_cmd_update_sta_db(struct ieee80211_hw *hw, | |
2126 | struct ieee80211_vif *vif, __u32 action) | |
2127 | { | |
2128 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2129 | struct ieee80211_bss_conf *info = &mv_vif->bss_info; | |
2130 | struct mwl8k_cmd_update_sta_db *cmd; | |
2131 | struct peer_capability_info *peer_info; | |
2132 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
a66098da LB |
2133 | int rc; |
2134 | __u8 count, *rates; | |
2135 | ||
2136 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2137 | if (cmd == NULL) | |
2138 | return -ENOMEM; | |
2139 | ||
2140 | cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB); | |
2141 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2142 | ||
2143 | cmd->action = cpu_to_le32(action); | |
2144 | peer_info = &cmd->peer_info; | |
d89173f2 | 2145 | memcpy(cmd->peer_addr, mv_vif->bssid, ETH_ALEN); |
a66098da LB |
2146 | |
2147 | switch (action) { | |
2148 | case MWL8K_STA_DB_ADD_ENTRY: | |
2149 | case MWL8K_STA_DB_MODIFY_ENTRY: | |
2150 | /* Build peer_info block */ | |
2151 | peer_info->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT; | |
2152 | peer_info->basic_caps = cpu_to_le16(info->assoc_capability); | |
2153 | peer_info->interop = 1; | |
2154 | peer_info->amsdu_enabled = 0; | |
2155 | ||
2156 | rates = peer_info->legacy_rates; | |
ce9e2e1b | 2157 | for (count = 0; count < mv_vif->legacy_nrates; count++) |
a66098da LB |
2158 | rates[count] = bitrates[count].hw_value; |
2159 | ||
2160 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2161 | if (rc == 0) | |
2162 | mv_vif->peer_id = peer_info->station_id; | |
2163 | ||
2164 | break; | |
2165 | ||
2166 | case MWL8K_STA_DB_DEL_ENTRY: | |
2167 | case MWL8K_STA_DB_FLUSH: | |
2168 | default: | |
2169 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2170 | if (rc == 0) | |
2171 | mv_vif->peer_id = 0; | |
2172 | break; | |
2173 | } | |
2174 | kfree(cmd); | |
2175 | ||
2176 | return rc; | |
2177 | } | |
2178 | ||
2179 | /* | |
2180 | * CMD_SET_AID. | |
2181 | */ | |
a66098da LB |
2182 | #define MWL8K_RATE_INDEX_MAX_ARRAY 14 |
2183 | ||
2184 | #define MWL8K_FRAME_PROT_DISABLED 0x00 | |
2185 | #define MWL8K_FRAME_PROT_11G 0x07 | |
2186 | #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02 | |
2187 | #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06 | |
a66098da LB |
2188 | |
2189 | struct mwl8k_cmd_update_set_aid { | |
2190 | struct mwl8k_cmd_pkt header; | |
2191 | __le16 aid; | |
2192 | ||
2193 | /* AP's MAC address (BSSID) */ | |
d89173f2 | 2194 | __u8 bssid[ETH_ALEN]; |
a66098da LB |
2195 | __le16 protection_mode; |
2196 | __u8 supp_rates[MWL8K_RATE_INDEX_MAX_ARRAY]; | |
2197 | } __attribute__((packed)); | |
2198 | ||
2199 | static int mwl8k_cmd_set_aid(struct ieee80211_hw *hw, | |
2200 | struct ieee80211_vif *vif) | |
2201 | { | |
2202 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2203 | struct ieee80211_bss_conf *info = &mv_vif->bss_info; | |
2204 | struct mwl8k_cmd_update_set_aid *cmd; | |
2205 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
2206 | int count; | |
2207 | u16 prot_mode; | |
2208 | int rc; | |
2209 | ||
2210 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2211 | if (cmd == NULL) | |
2212 | return -ENOMEM; | |
2213 | ||
2214 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID); | |
2215 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2216 | cmd->aid = cpu_to_le16(info->aid); | |
2217 | ||
d89173f2 | 2218 | memcpy(cmd->bssid, mv_vif->bssid, ETH_ALEN); |
a66098da | 2219 | |
a66098da LB |
2220 | if (info->use_cts_prot) { |
2221 | prot_mode = MWL8K_FRAME_PROT_11G; | |
2222 | } else { | |
9ed6bcce | 2223 | switch (info->ht_operation_mode & |
a66098da LB |
2224 | IEEE80211_HT_OP_MODE_PROTECTION) { |
2225 | case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: | |
2226 | prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY; | |
2227 | break; | |
2228 | case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: | |
2229 | prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL; | |
2230 | break; | |
2231 | default: | |
2232 | prot_mode = MWL8K_FRAME_PROT_DISABLED; | |
2233 | break; | |
2234 | } | |
2235 | } | |
a66098da LB |
2236 | cmd->protection_mode = cpu_to_le16(prot_mode); |
2237 | ||
2238 | for (count = 0; count < mv_vif->legacy_nrates; count++) | |
2239 | cmd->supp_rates[count] = bitrates[count].hw_value; | |
2240 | ||
2241 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2242 | kfree(cmd); | |
2243 | ||
2244 | return rc; | |
2245 | } | |
2246 | ||
2247 | /* | |
2248 | * CMD_SET_RATE. | |
2249 | */ | |
2250 | struct mwl8k_cmd_update_rateset { | |
2251 | struct mwl8k_cmd_pkt header; | |
2252 | __u8 legacy_rates[MWL8K_RATE_INDEX_MAX_ARRAY]; | |
2253 | ||
2254 | /* Bitmap for supported MCS codes. */ | |
2255 | __u8 mcs_set[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
2256 | __u8 reserved[MWL8K_IEEE_LEGACY_DATA_RATES]; | |
2257 | } __attribute__((packed)); | |
2258 | ||
2259 | static int mwl8k_update_rateset(struct ieee80211_hw *hw, | |
2260 | struct ieee80211_vif *vif) | |
2261 | { | |
2262 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); | |
2263 | struct mwl8k_cmd_update_rateset *cmd; | |
2264 | struct ieee80211_rate *bitrates = mv_vif->legacy_rates; | |
2265 | int count; | |
2266 | int rc; | |
2267 | ||
2268 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2269 | if (cmd == NULL) | |
2270 | return -ENOMEM; | |
2271 | ||
2272 | cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE); | |
2273 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2274 | ||
2275 | for (count = 0; count < mv_vif->legacy_nrates; count++) | |
2276 | cmd->legacy_rates[count] = bitrates[count].hw_value; | |
2277 | ||
2278 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2279 | kfree(cmd); | |
2280 | ||
2281 | return rc; | |
2282 | } | |
2283 | ||
2284 | /* | |
2285 | * CMD_USE_FIXED_RATE. | |
2286 | */ | |
2287 | #define MWL8K_RATE_TABLE_SIZE 8 | |
2288 | #define MWL8K_UCAST_RATE 0 | |
a66098da LB |
2289 | #define MWL8K_USE_AUTO_RATE 0x0002 |
2290 | ||
2291 | struct mwl8k_rate_entry { | |
2292 | /* Set to 1 if HT rate, 0 if legacy. */ | |
2293 | __le32 is_ht_rate; | |
2294 | ||
2295 | /* Set to 1 to use retry_count field. */ | |
2296 | __le32 enable_retry; | |
2297 | ||
2298 | /* Specified legacy rate or MCS. */ | |
2299 | __le32 rate; | |
2300 | ||
2301 | /* Number of allowed retries. */ | |
2302 | __le32 retry_count; | |
2303 | } __attribute__((packed)); | |
2304 | ||
2305 | struct mwl8k_rate_table { | |
2306 | /* 1 to allow specified rate and below */ | |
2307 | __le32 allow_rate_drop; | |
2308 | __le32 num_rates; | |
2309 | struct mwl8k_rate_entry rate_entry[MWL8K_RATE_TABLE_SIZE]; | |
2310 | } __attribute__((packed)); | |
2311 | ||
2312 | struct mwl8k_cmd_use_fixed_rate { | |
2313 | struct mwl8k_cmd_pkt header; | |
2314 | __le32 action; | |
2315 | struct mwl8k_rate_table rate_table; | |
2316 | ||
2317 | /* Unicast, Broadcast or Multicast */ | |
2318 | __le32 rate_type; | |
2319 | __le32 reserved1; | |
2320 | __le32 reserved2; | |
2321 | } __attribute__((packed)); | |
2322 | ||
2323 | static int mwl8k_cmd_use_fixed_rate(struct ieee80211_hw *hw, | |
2324 | u32 action, u32 rate_type, struct mwl8k_rate_table *rate_table) | |
2325 | { | |
2326 | struct mwl8k_cmd_use_fixed_rate *cmd; | |
2327 | int count; | |
2328 | int rc; | |
2329 | ||
2330 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
2331 | if (cmd == NULL) | |
2332 | return -ENOMEM; | |
2333 | ||
2334 | cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE); | |
2335 | cmd->header.length = cpu_to_le16(sizeof(*cmd)); | |
2336 | ||
2337 | cmd->action = cpu_to_le32(action); | |
2338 | cmd->rate_type = cpu_to_le32(rate_type); | |
2339 | ||
2340 | if (rate_table != NULL) { | |
2341 | /* Copy over each field manually so | |
2342 | * that bitflipping can be done | |
2343 | */ | |
2344 | cmd->rate_table.allow_rate_drop = | |
2345 | cpu_to_le32(rate_table->allow_rate_drop); | |
2346 | cmd->rate_table.num_rates = | |
2347 | cpu_to_le32(rate_table->num_rates); | |
2348 | ||
2349 | for (count = 0; count < rate_table->num_rates; count++) { | |
2350 | struct mwl8k_rate_entry *dst = | |
2351 | &cmd->rate_table.rate_entry[count]; | |
2352 | struct mwl8k_rate_entry *src = | |
2353 | &rate_table->rate_entry[count]; | |
2354 | ||
2355 | dst->is_ht_rate = cpu_to_le32(src->is_ht_rate); | |
2356 | dst->enable_retry = cpu_to_le32(src->enable_retry); | |
2357 | dst->rate = cpu_to_le32(src->rate); | |
2358 | dst->retry_count = cpu_to_le32(src->retry_count); | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | rc = mwl8k_post_cmd(hw, &cmd->header); | |
2363 | kfree(cmd); | |
2364 | ||
2365 | return rc; | |
2366 | } | |
2367 | ||
2368 | ||
2369 | /* | |
2370 | * Interrupt handling. | |
2371 | */ | |
2372 | static irqreturn_t mwl8k_interrupt(int irq, void *dev_id) | |
2373 | { | |
2374 | struct ieee80211_hw *hw = dev_id; | |
2375 | struct mwl8k_priv *priv = hw->priv; | |
2376 | u32 status; | |
2377 | ||
2378 | status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
2379 | iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
2380 | ||
a66098da LB |
2381 | if (!status) |
2382 | return IRQ_NONE; | |
2383 | ||
2384 | if (status & MWL8K_A2H_INT_TX_DONE) | |
2385 | tasklet_schedule(&priv->tx_reclaim_task); | |
2386 | ||
2387 | if (status & MWL8K_A2H_INT_RX_READY) { | |
2388 | while (rxq_process(hw, 0, 1)) | |
2389 | rxq_refill(hw, 0, 1); | |
2390 | } | |
2391 | ||
2392 | if (status & MWL8K_A2H_INT_OPC_DONE) { | |
618952a7 | 2393 | if (priv->hostcmd_wait != NULL) |
a66098da | 2394 | complete(priv->hostcmd_wait); |
a66098da LB |
2395 | } |
2396 | ||
2397 | if (status & MWL8K_A2H_INT_QUEUE_EMPTY) { | |
618952a7 LB |
2398 | if (!mutex_is_locked(&priv->fw_mutex) && |
2399 | priv->radio_on && mwl8k_txq_busy(priv)) | |
2400 | mwl8k_tx_start(priv); | |
a66098da LB |
2401 | } |
2402 | ||
2403 | return IRQ_HANDLED; | |
2404 | } | |
2405 | ||
2406 | ||
2407 | /* | |
2408 | * Core driver operations. | |
2409 | */ | |
2410 | static int mwl8k_tx(struct ieee80211_hw *hw, struct sk_buff *skb) | |
2411 | { | |
2412 | struct mwl8k_priv *priv = hw->priv; | |
2413 | int index = skb_get_queue_mapping(skb); | |
2414 | int rc; | |
2415 | ||
2416 | if (priv->current_channel == NULL) { | |
2417 | printk(KERN_DEBUG "%s: dropped TX frame since radio " | |
2418 | "disabled\n", priv->name); | |
2419 | dev_kfree_skb(skb); | |
2420 | return NETDEV_TX_OK; | |
2421 | } | |
2422 | ||
2423 | rc = mwl8k_txq_xmit(hw, index, skb); | |
2424 | ||
2425 | return rc; | |
2426 | } | |
2427 | ||
2428 | struct mwl8k_work_struct { | |
2429 | /* Initialized by mwl8k_queue_work(). */ | |
2430 | struct work_struct wt; | |
2431 | ||
2432 | /* Required field passed in to mwl8k_queue_work(). */ | |
2433 | struct ieee80211_hw *hw; | |
2434 | ||
2435 | /* Required field passed in to mwl8k_queue_work(). */ | |
2436 | int (*wfunc)(struct work_struct *w); | |
2437 | ||
2438 | /* Initialized by mwl8k_queue_work(). */ | |
2439 | struct completion *cmd_wait; | |
2440 | ||
2441 | /* Result code. */ | |
2442 | int rc; | |
a66098da LB |
2443 | }; |
2444 | ||
a66098da LB |
2445 | static void mwl8k_config_thread(struct work_struct *wt) |
2446 | { | |
2447 | struct mwl8k_work_struct *worker = (struct mwl8k_work_struct *)wt; | |
2448 | struct ieee80211_hw *hw = worker->hw; | |
a66098da LB |
2449 | int rc = 0; |
2450 | ||
618952a7 LB |
2451 | rc = mwl8k_fw_lock(hw); |
2452 | if (!rc) { | |
a66098da | 2453 | rc = worker->wfunc(wt); |
618952a7 LB |
2454 | mwl8k_fw_unlock(hw); |
2455 | } | |
a66098da LB |
2456 | |
2457 | worker->rc = rc; | |
950d5b01 | 2458 | complete(worker->cmd_wait); |
a66098da LB |
2459 | } |
2460 | ||
2461 | static int mwl8k_queue_work(struct ieee80211_hw *hw, | |
2462 | struct mwl8k_work_struct *worker, | |
a66098da LB |
2463 | int (*wfunc)(struct work_struct *w)) |
2464 | { | |
950d5b01 | 2465 | struct mwl8k_priv *priv = hw->priv; |
a66098da LB |
2466 | unsigned long timeout = 0; |
2467 | int rc = 0; | |
2468 | ||
2469 | DECLARE_COMPLETION_ONSTACK(cmd_wait); | |
2470 | ||
a66098da LB |
2471 | worker->hw = hw; |
2472 | worker->cmd_wait = &cmd_wait; | |
2473 | worker->rc = 1; | |
2474 | worker->wfunc = wfunc; | |
2475 | ||
2476 | INIT_WORK(&worker->wt, mwl8k_config_thread); | |
950d5b01 | 2477 | queue_work(priv->config_wq, &worker->wt); |
a66098da | 2478 | |
950d5b01 LB |
2479 | timeout = wait_for_completion_timeout(&cmd_wait, |
2480 | msecs_to_jiffies(10000)); | |
a66098da | 2481 | |
950d5b01 LB |
2482 | if (timeout) |
2483 | rc = worker->rc; | |
2484 | else { | |
2485 | cancel_work_sync(&worker->wt); | |
2486 | rc = -ETIMEDOUT; | |
a66098da LB |
2487 | } |
2488 | ||
2489 | return rc; | |
2490 | } | |
2491 | ||
a66098da LB |
2492 | static int mwl8k_start(struct ieee80211_hw *hw) |
2493 | { | |
a66098da LB |
2494 | struct mwl8k_priv *priv = hw->priv; |
2495 | int rc; | |
2496 | ||
a66098da LB |
2497 | rc = request_irq(priv->pdev->irq, &mwl8k_interrupt, |
2498 | IRQF_SHARED, MWL8K_NAME, hw); | |
2499 | if (rc) { | |
2500 | printk(KERN_ERR "%s: failed to register IRQ handler\n", | |
2501 | priv->name); | |
2ec610cb | 2502 | return -EIO; |
a66098da LB |
2503 | } |
2504 | ||
2ec610cb LB |
2505 | /* Enable tx reclaim tasklet */ |
2506 | tasklet_enable(&priv->tx_reclaim_task); | |
2507 | ||
a66098da | 2508 | /* Enable interrupts */ |
c23b5a69 | 2509 | iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da | 2510 | |
2ec610cb LB |
2511 | rc = mwl8k_fw_lock(hw); |
2512 | if (!rc) { | |
2513 | rc = mwl8k_cmd_802_11_radio_enable(hw); | |
a66098da | 2514 | |
2ec610cb LB |
2515 | if (!rc) |
2516 | rc = mwl8k_cmd_set_pre_scan(hw); | |
a66098da | 2517 | |
2ec610cb LB |
2518 | if (!rc) |
2519 | rc = mwl8k_cmd_set_post_scan(hw, | |
2520 | "\x00\x00\x00\x00\x00\x00"); | |
2521 | ||
2522 | if (!rc) | |
2523 | rc = mwl8k_cmd_setrateadaptmode(hw, 0); | |
a66098da | 2524 | |
2ec610cb LB |
2525 | if (!rc) |
2526 | rc = mwl8k_set_wmm(hw, 0); | |
a66098da | 2527 | |
2ec610cb LB |
2528 | if (!rc) |
2529 | rc = mwl8k_enable_sniffer(hw, 0); | |
a66098da | 2530 | |
2ec610cb LB |
2531 | mwl8k_fw_unlock(hw); |
2532 | } | |
2533 | ||
2534 | if (rc) { | |
2535 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); | |
2536 | free_irq(priv->pdev->irq, hw); | |
2537 | tasklet_disable(&priv->tx_reclaim_task); | |
2538 | } | |
a66098da LB |
2539 | |
2540 | return rc; | |
2541 | } | |
2542 | ||
a66098da LB |
2543 | static void mwl8k_stop(struct ieee80211_hw *hw) |
2544 | { | |
a66098da LB |
2545 | struct mwl8k_priv *priv = hw->priv; |
2546 | int i; | |
2547 | ||
d3cea0b8 | 2548 | mwl8k_cmd_802_11_radio_disable(hw); |
a66098da LB |
2549 | |
2550 | ieee80211_stop_queues(hw); | |
2551 | ||
a66098da | 2552 | /* Disable interrupts */ |
a66098da | 2553 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
2554 | free_irq(priv->pdev->irq, hw); |
2555 | ||
2556 | /* Stop finalize join worker */ | |
2557 | cancel_work_sync(&priv->finalize_join_worker); | |
2558 | if (priv->beacon_skb != NULL) | |
2559 | dev_kfree_skb(priv->beacon_skb); | |
2560 | ||
2561 | /* Stop tx reclaim tasklet */ | |
2562 | tasklet_disable(&priv->tx_reclaim_task); | |
2563 | ||
2564 | /* Stop config thread */ | |
2565 | flush_workqueue(priv->config_wq); | |
2566 | ||
2567 | /* Return all skbs to mac80211 */ | |
2568 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
2569 | mwl8k_txq_reclaim(hw, i, 1); | |
2570 | } | |
2571 | ||
2572 | static int mwl8k_add_interface(struct ieee80211_hw *hw, | |
2573 | struct ieee80211_if_init_conf *conf) | |
2574 | { | |
2575 | struct mwl8k_priv *priv = hw->priv; | |
2576 | struct mwl8k_vif *mwl8k_vif; | |
2577 | ||
2578 | /* | |
2579 | * We only support one active interface at a time. | |
2580 | */ | |
2581 | if (priv->vif != NULL) | |
2582 | return -EBUSY; | |
2583 | ||
2584 | /* | |
2585 | * We only support managed interfaces for now. | |
2586 | */ | |
240e86ef | 2587 | if (conf->type != NL80211_IFTYPE_STATION) |
a66098da LB |
2588 | return -EINVAL; |
2589 | ||
2590 | /* Clean out driver private area */ | |
2591 | mwl8k_vif = MWL8K_VIF(conf->vif); | |
2592 | memset(mwl8k_vif, 0, sizeof(*mwl8k_vif)); | |
2593 | ||
2594 | /* Save the mac address */ | |
d89173f2 | 2595 | memcpy(mwl8k_vif->mac_addr, conf->mac_addr, ETH_ALEN); |
a66098da LB |
2596 | |
2597 | /* Back pointer to parent config block */ | |
2598 | mwl8k_vif->priv = priv; | |
2599 | ||
2600 | /* Setup initial PHY parameters */ | |
ce9e2e1b | 2601 | memcpy(mwl8k_vif->legacy_rates, |
a66098da LB |
2602 | priv->rates, sizeof(mwl8k_vif->legacy_rates)); |
2603 | mwl8k_vif->legacy_nrates = ARRAY_SIZE(priv->rates); | |
2604 | ||
2605 | /* Set Initial sequence number to zero */ | |
2606 | mwl8k_vif->seqno = 0; | |
2607 | ||
2608 | priv->vif = conf->vif; | |
2609 | priv->current_channel = NULL; | |
2610 | ||
2611 | return 0; | |
2612 | } | |
2613 | ||
2614 | static void mwl8k_remove_interface(struct ieee80211_hw *hw, | |
2615 | struct ieee80211_if_init_conf *conf) | |
2616 | { | |
2617 | struct mwl8k_priv *priv = hw->priv; | |
2618 | ||
2619 | if (priv->vif == NULL) | |
2620 | return; | |
2621 | ||
2622 | priv->vif = NULL; | |
2623 | } | |
2624 | ||
2625 | struct mwl8k_config_worker { | |
2626 | struct mwl8k_work_struct header; | |
2627 | u32 changed; | |
2628 | }; | |
2629 | ||
2630 | static int mwl8k_config_wt(struct work_struct *wt) | |
2631 | { | |
2632 | struct mwl8k_config_worker *worker = | |
2633 | (struct mwl8k_config_worker *)wt; | |
2634 | struct ieee80211_hw *hw = worker->header.hw; | |
2635 | struct ieee80211_conf *conf = &hw->conf; | |
2636 | struct mwl8k_priv *priv = hw->priv; | |
2637 | int rc = 0; | |
2638 | ||
7595d67a LB |
2639 | if (conf->flags & IEEE80211_CONF_IDLE) { |
2640 | mwl8k_cmd_802_11_radio_disable(hw); | |
2641 | priv->current_channel = NULL; | |
2642 | goto mwl8k_config_exit; | |
2643 | } | |
2644 | ||
c46563b7 | 2645 | if (mwl8k_cmd_802_11_radio_enable(hw)) { |
a66098da LB |
2646 | rc = -EINVAL; |
2647 | goto mwl8k_config_exit; | |
2648 | } | |
2649 | ||
2650 | priv->current_channel = conf->channel; | |
2651 | ||
2652 | if (mwl8k_cmd_set_rf_channel(hw, conf->channel)) { | |
2653 | rc = -EINVAL; | |
2654 | goto mwl8k_config_exit; | |
2655 | } | |
2656 | ||
2657 | if (conf->power_level > 18) | |
2658 | conf->power_level = 18; | |
2659 | if (mwl8k_cmd_802_11_rf_tx_power(hw, conf->power_level)) { | |
2660 | rc = -EINVAL; | |
2661 | goto mwl8k_config_exit; | |
2662 | } | |
2663 | ||
2664 | if (mwl8k_cmd_mimo_config(hw, 0x7, 0x7)) | |
2665 | rc = -EINVAL; | |
2666 | ||
2667 | mwl8k_config_exit: | |
2668 | return rc; | |
2669 | } | |
2670 | ||
2671 | static int mwl8k_config(struct ieee80211_hw *hw, u32 changed) | |
2672 | { | |
2673 | int rc = 0; | |
2674 | struct mwl8k_config_worker *worker; | |
a66098da LB |
2675 | |
2676 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2677 | if (worker == NULL) | |
2678 | return -ENOMEM; | |
2679 | ||
2680 | worker->changed = changed; | |
950d5b01 LB |
2681 | |
2682 | rc = mwl8k_queue_work(hw, &worker->header, mwl8k_config_wt); | |
a66098da LB |
2683 | if (rc == -ETIMEDOUT) { |
2684 | printk(KERN_ERR "%s() timed out.\n", __func__); | |
2685 | rc = -EINVAL; | |
2686 | } | |
2687 | ||
2688 | kfree(worker); | |
2689 | ||
2690 | /* | |
2691 | * mac80211 will crash on anything other than -EINVAL on | |
2692 | * error. Looks like wireless extensions which calls mac80211 | |
2693 | * may be the actual culprit... | |
2694 | */ | |
2695 | return rc ? -EINVAL : 0; | |
2696 | } | |
2697 | ||
a66098da LB |
2698 | struct mwl8k_bss_info_changed_worker { |
2699 | struct mwl8k_work_struct header; | |
2700 | struct ieee80211_vif *vif; | |
2701 | struct ieee80211_bss_conf *info; | |
2702 | u32 changed; | |
2703 | }; | |
2704 | ||
2705 | static int mwl8k_bss_info_changed_wt(struct work_struct *wt) | |
2706 | { | |
2707 | struct mwl8k_bss_info_changed_worker *worker = | |
2708 | (struct mwl8k_bss_info_changed_worker *)wt; | |
2709 | struct ieee80211_hw *hw = worker->header.hw; | |
2710 | struct ieee80211_vif *vif = worker->vif; | |
2711 | struct ieee80211_bss_conf *info = worker->info; | |
2712 | u32 changed; | |
2713 | int rc; | |
2714 | ||
2715 | struct mwl8k_priv *priv = hw->priv; | |
2716 | struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif); | |
2717 | ||
2718 | changed = worker->changed; | |
2719 | priv->capture_beacon = false; | |
2720 | ||
2721 | if (info->assoc) { | |
2722 | memcpy(&mwl8k_vif->bss_info, info, | |
2723 | sizeof(struct ieee80211_bss_conf)); | |
2724 | ||
2725 | /* Install rates */ | |
2726 | if (mwl8k_update_rateset(hw, vif)) | |
2727 | goto mwl8k_bss_info_changed_exit; | |
2728 | ||
2729 | /* Turn on rate adaptation */ | |
2730 | if (mwl8k_cmd_use_fixed_rate(hw, MWL8K_USE_AUTO_RATE, | |
2731 | MWL8K_UCAST_RATE, NULL)) | |
2732 | goto mwl8k_bss_info_changed_exit; | |
2733 | ||
2734 | /* Set radio preamble */ | |
68ce3884 | 2735 | if (mwl8k_set_radio_preamble(hw, info->use_short_preamble)) |
a66098da LB |
2736 | goto mwl8k_bss_info_changed_exit; |
2737 | ||
2738 | /* Set slot time */ | |
5539bb51 | 2739 | if (mwl8k_cmd_set_slot(hw, info->use_short_slot)) |
a66098da LB |
2740 | goto mwl8k_bss_info_changed_exit; |
2741 | ||
2742 | /* Update peer rate info */ | |
2743 | if (mwl8k_cmd_update_sta_db(hw, vif, | |
2744 | MWL8K_STA_DB_MODIFY_ENTRY)) | |
2745 | goto mwl8k_bss_info_changed_exit; | |
2746 | ||
2747 | /* Set AID */ | |
2748 | if (mwl8k_cmd_set_aid(hw, vif)) | |
2749 | goto mwl8k_bss_info_changed_exit; | |
2750 | ||
2751 | /* | |
2752 | * Finalize the join. Tell rx handler to process | |
2753 | * next beacon from our BSSID. | |
2754 | */ | |
d89173f2 | 2755 | memcpy(priv->capture_bssid, mwl8k_vif->bssid, ETH_ALEN); |
a66098da LB |
2756 | priv->capture_beacon = true; |
2757 | } else { | |
2758 | mwl8k_cmd_update_sta_db(hw, vif, MWL8K_STA_DB_DEL_ENTRY); | |
2759 | memset(&mwl8k_vif->bss_info, 0, | |
2760 | sizeof(struct ieee80211_bss_conf)); | |
d89173f2 | 2761 | memset(mwl8k_vif->bssid, 0, ETH_ALEN); |
a66098da LB |
2762 | } |
2763 | ||
2764 | mwl8k_bss_info_changed_exit: | |
2765 | rc = 0; | |
2766 | return rc; | |
2767 | } | |
2768 | ||
2769 | static void mwl8k_bss_info_changed(struct ieee80211_hw *hw, | |
2770 | struct ieee80211_vif *vif, | |
2771 | struct ieee80211_bss_conf *info, | |
2772 | u32 changed) | |
2773 | { | |
2774 | struct mwl8k_bss_info_changed_worker *worker; | |
2d0ddec5 | 2775 | struct mwl8k_vif *mv_vif = MWL8K_VIF(vif); |
a66098da LB |
2776 | int rc; |
2777 | ||
2d0ddec5 | 2778 | if (changed & BSS_CHANGED_BSSID) |
d89173f2 | 2779 | memcpy(mv_vif->bssid, info->bssid, ETH_ALEN); |
2d0ddec5 | 2780 | |
a66098da LB |
2781 | if ((changed & BSS_CHANGED_ASSOC) == 0) |
2782 | return; | |
2783 | ||
2784 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2785 | if (worker == NULL) | |
2786 | return; | |
2787 | ||
2788 | worker->vif = vif; | |
2789 | worker->info = info; | |
2790 | worker->changed = changed; | |
950d5b01 | 2791 | rc = mwl8k_queue_work(hw, &worker->header, mwl8k_bss_info_changed_wt); |
a66098da LB |
2792 | kfree(worker); |
2793 | if (rc == -ETIMEDOUT) | |
2794 | printk(KERN_ERR "%s() timed out\n", __func__); | |
2795 | } | |
2796 | ||
e81cd2d6 LB |
2797 | static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw, |
2798 | int mc_count, struct dev_addr_list *mclist) | |
2799 | { | |
2800 | struct mwl8k_cmd_pkt *cmd; | |
2801 | ||
2802 | cmd = __mwl8k_cmd_mac_multicast_adr(hw, mc_count, mclist); | |
2803 | ||
2804 | return (unsigned long)cmd; | |
2805 | } | |
2806 | ||
a66098da LB |
2807 | struct mwl8k_configure_filter_worker { |
2808 | struct mwl8k_work_struct header; | |
2809 | unsigned int changed_flags; | |
e81cd2d6 LB |
2810 | unsigned int total_flags; |
2811 | struct mwl8k_cmd_pkt *multicast_adr_cmd; | |
a66098da LB |
2812 | }; |
2813 | ||
2814 | #define MWL8K_SUPPORTED_IF_FLAGS FIF_BCN_PRBRESP_PROMISC | |
2815 | ||
2816 | static int mwl8k_configure_filter_wt(struct work_struct *wt) | |
2817 | { | |
2818 | struct mwl8k_configure_filter_worker *worker = | |
2819 | (struct mwl8k_configure_filter_worker *)wt; | |
a66098da | 2820 | struct ieee80211_hw *hw = worker->header.hw; |
a66098da | 2821 | struct mwl8k_priv *priv = hw->priv; |
a66098da LB |
2822 | int rc = 0; |
2823 | ||
e81cd2d6 LB |
2824 | if (worker->changed_flags & FIF_BCN_PRBRESP_PROMISC) { |
2825 | if (worker->total_flags & FIF_BCN_PRBRESP_PROMISC) | |
a66098da LB |
2826 | rc = mwl8k_cmd_set_pre_scan(hw); |
2827 | else { | |
a94cc97e LB |
2828 | u8 *bssid; |
2829 | ||
2830 | bssid = "\x00\x00\x00\x00\x00\x00"; | |
2831 | if (priv->vif != NULL) | |
2832 | bssid = MWL8K_VIF(priv->vif)->bssid; | |
2833 | ||
2834 | rc = mwl8k_cmd_set_post_scan(hw, bssid); | |
a66098da LB |
2835 | } |
2836 | } | |
2837 | ||
e81cd2d6 LB |
2838 | if (!rc && worker->multicast_adr_cmd != NULL) |
2839 | rc = mwl8k_post_cmd(hw, worker->multicast_adr_cmd); | |
2840 | kfree(worker->multicast_adr_cmd); | |
ce9e2e1b | 2841 | |
a66098da LB |
2842 | return rc; |
2843 | } | |
2844 | ||
2845 | static void mwl8k_configure_filter(struct ieee80211_hw *hw, | |
2846 | unsigned int changed_flags, | |
2847 | unsigned int *total_flags, | |
3ac64bee | 2848 | u64 multicast) |
a66098da | 2849 | { |
e81cd2d6 | 2850 | struct mwl8k_configure_filter_worker *worker; |
a66098da LB |
2851 | |
2852 | /* Clear unsupported feature flags */ | |
2853 | *total_flags &= MWL8K_SUPPORTED_IF_FLAGS; | |
2854 | ||
3ac64bee | 2855 | if (!(changed_flags & MWL8K_SUPPORTED_IF_FLAGS)) |
a66098da LB |
2856 | return; |
2857 | ||
e81cd2d6 | 2858 | worker = kzalloc(sizeof(*worker), GFP_ATOMIC); |
a66098da LB |
2859 | if (worker == NULL) |
2860 | return; | |
2861 | ||
a66098da | 2862 | worker->changed_flags = changed_flags; |
e81cd2d6 LB |
2863 | worker->total_flags = *total_flags; |
2864 | worker->multicast_adr_cmd = (void *)(unsigned long)multicast; | |
a66098da | 2865 | |
950d5b01 | 2866 | mwl8k_queue_work(hw, &worker->header, mwl8k_configure_filter_wt); |
a66098da LB |
2867 | } |
2868 | ||
2869 | struct mwl8k_set_rts_threshold_worker { | |
2870 | struct mwl8k_work_struct header; | |
2871 | u32 value; | |
2872 | }; | |
2873 | ||
2874 | static int mwl8k_set_rts_threshold_wt(struct work_struct *wt) | |
2875 | { | |
2876 | struct mwl8k_set_rts_threshold_worker *worker = | |
2877 | (struct mwl8k_set_rts_threshold_worker *)wt; | |
2878 | ||
2879 | struct ieee80211_hw *hw = worker->header.hw; | |
2880 | u16 threshold = (u16)(worker->value); | |
2881 | int rc; | |
2882 | ||
2883 | rc = mwl8k_rts_threshold(hw, MWL8K_CMD_SET, &threshold); | |
2884 | ||
2885 | return rc; | |
2886 | } | |
2887 | ||
2888 | static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) | |
2889 | { | |
2890 | int rc; | |
2891 | struct mwl8k_set_rts_threshold_worker *worker; | |
a66098da LB |
2892 | |
2893 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2894 | if (worker == NULL) | |
2895 | return -ENOMEM; | |
2896 | ||
2897 | worker->value = value; | |
2898 | ||
950d5b01 | 2899 | rc = mwl8k_queue_work(hw, &worker->header, mwl8k_set_rts_threshold_wt); |
a66098da LB |
2900 | kfree(worker); |
2901 | ||
2902 | if (rc == -ETIMEDOUT) { | |
2903 | printk(KERN_ERR "%s() timed out\n", __func__); | |
2904 | rc = -EINVAL; | |
2905 | } | |
2906 | ||
2907 | return rc; | |
2908 | } | |
2909 | ||
2910 | struct mwl8k_conf_tx_worker { | |
2911 | struct mwl8k_work_struct header; | |
2912 | u16 queue; | |
2913 | const struct ieee80211_tx_queue_params *params; | |
2914 | }; | |
2915 | ||
2916 | static int mwl8k_conf_tx_wt(struct work_struct *wt) | |
2917 | { | |
2918 | struct mwl8k_conf_tx_worker *worker = | |
2919 | (struct mwl8k_conf_tx_worker *)wt; | |
2920 | ||
2921 | struct ieee80211_hw *hw = worker->header.hw; | |
2922 | u16 queue = worker->queue; | |
2923 | const struct ieee80211_tx_queue_params *params = worker->params; | |
2924 | ||
2925 | struct mwl8k_priv *priv = hw->priv; | |
2926 | int rc = 0; | |
2927 | ||
0439b1f5 LB |
2928 | if (!priv->wmm_enabled) { |
2929 | if (mwl8k_set_wmm(hw, 1)) { | |
a66098da LB |
2930 | rc = -EINVAL; |
2931 | goto mwl8k_conf_tx_exit; | |
0439b1f5 | 2932 | } |
a66098da LB |
2933 | } |
2934 | ||
2935 | if (mwl8k_set_edca_params(hw, GET_TXQ(queue), params->cw_min, | |
2936 | params->cw_max, params->aifs, params->txop)) | |
2937 | rc = -EINVAL; | |
2938 | mwl8k_conf_tx_exit: | |
2939 | return rc; | |
2940 | } | |
2941 | ||
2942 | static int mwl8k_conf_tx(struct ieee80211_hw *hw, u16 queue, | |
2943 | const struct ieee80211_tx_queue_params *params) | |
2944 | { | |
2945 | int rc; | |
2946 | struct mwl8k_conf_tx_worker *worker; | |
a66098da LB |
2947 | |
2948 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
2949 | if (worker == NULL) | |
2950 | return -ENOMEM; | |
2951 | ||
2952 | worker->queue = queue; | |
2953 | worker->params = params; | |
950d5b01 | 2954 | rc = mwl8k_queue_work(hw, &worker->header, mwl8k_conf_tx_wt); |
a66098da LB |
2955 | kfree(worker); |
2956 | if (rc == -ETIMEDOUT) { | |
2957 | printk(KERN_ERR "%s() timed out\n", __func__); | |
2958 | rc = -EINVAL; | |
2959 | } | |
2960 | return rc; | |
2961 | } | |
2962 | ||
2963 | static int mwl8k_get_tx_stats(struct ieee80211_hw *hw, | |
2964 | struct ieee80211_tx_queue_stats *stats) | |
2965 | { | |
2966 | struct mwl8k_priv *priv = hw->priv; | |
2967 | struct mwl8k_tx_queue *txq; | |
2968 | int index; | |
2969 | ||
2970 | spin_lock_bh(&priv->tx_lock); | |
2971 | for (index = 0; index < MWL8K_TX_QUEUES; index++) { | |
2972 | txq = priv->txq + index; | |
2973 | memcpy(&stats[index], &txq->tx_stats, | |
2974 | sizeof(struct ieee80211_tx_queue_stats)); | |
2975 | } | |
2976 | spin_unlock_bh(&priv->tx_lock); | |
2977 | return 0; | |
2978 | } | |
2979 | ||
2980 | struct mwl8k_get_stats_worker { | |
2981 | struct mwl8k_work_struct header; | |
2982 | struct ieee80211_low_level_stats *stats; | |
2983 | }; | |
2984 | ||
2985 | static int mwl8k_get_stats_wt(struct work_struct *wt) | |
2986 | { | |
2987 | struct mwl8k_get_stats_worker *worker = | |
2988 | (struct mwl8k_get_stats_worker *)wt; | |
2989 | ||
2990 | return mwl8k_cmd_802_11_get_stat(worker->header.hw, worker->stats); | |
2991 | } | |
2992 | ||
2993 | static int mwl8k_get_stats(struct ieee80211_hw *hw, | |
2994 | struct ieee80211_low_level_stats *stats) | |
2995 | { | |
2996 | int rc; | |
2997 | struct mwl8k_get_stats_worker *worker; | |
a66098da LB |
2998 | |
2999 | worker = kzalloc(sizeof(*worker), GFP_KERNEL); | |
3000 | if (worker == NULL) | |
3001 | return -ENOMEM; | |
3002 | ||
3003 | worker->stats = stats; | |
950d5b01 | 3004 | rc = mwl8k_queue_work(hw, &worker->header, mwl8k_get_stats_wt); |
a66098da LB |
3005 | |
3006 | kfree(worker); | |
3007 | if (rc == -ETIMEDOUT) { | |
3008 | printk(KERN_ERR "%s() timed out\n", __func__); | |
3009 | rc = -EINVAL; | |
3010 | } | |
3011 | ||
3012 | return rc; | |
3013 | } | |
3014 | ||
3015 | static const struct ieee80211_ops mwl8k_ops = { | |
3016 | .tx = mwl8k_tx, | |
3017 | .start = mwl8k_start, | |
3018 | .stop = mwl8k_stop, | |
3019 | .add_interface = mwl8k_add_interface, | |
3020 | .remove_interface = mwl8k_remove_interface, | |
3021 | .config = mwl8k_config, | |
a66098da | 3022 | .bss_info_changed = mwl8k_bss_info_changed, |
3ac64bee | 3023 | .prepare_multicast = mwl8k_prepare_multicast, |
a66098da LB |
3024 | .configure_filter = mwl8k_configure_filter, |
3025 | .set_rts_threshold = mwl8k_set_rts_threshold, | |
3026 | .conf_tx = mwl8k_conf_tx, | |
3027 | .get_tx_stats = mwl8k_get_tx_stats, | |
3028 | .get_stats = mwl8k_get_stats, | |
3029 | }; | |
3030 | ||
3031 | static void mwl8k_tx_reclaim_handler(unsigned long data) | |
3032 | { | |
3033 | int i; | |
3034 | struct ieee80211_hw *hw = (struct ieee80211_hw *) data; | |
3035 | struct mwl8k_priv *priv = hw->priv; | |
3036 | ||
3037 | spin_lock_bh(&priv->tx_lock); | |
3038 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3039 | mwl8k_txq_reclaim(hw, i, 0); | |
3040 | ||
ce9e2e1b LB |
3041 | if (priv->tx_wait != NULL && mwl8k_txq_busy(priv) == 0) { |
3042 | complete(priv->tx_wait); | |
3043 | priv->tx_wait = NULL; | |
a66098da LB |
3044 | } |
3045 | spin_unlock_bh(&priv->tx_lock); | |
3046 | } | |
3047 | ||
3048 | static void mwl8k_finalize_join_worker(struct work_struct *work) | |
3049 | { | |
3050 | struct mwl8k_priv *priv = | |
3051 | container_of(work, struct mwl8k_priv, finalize_join_worker); | |
3052 | struct sk_buff *skb = priv->beacon_skb; | |
ce9e2e1b | 3053 | u8 dtim = MWL8K_VIF(priv->vif)->bss_info.dtim_period; |
a66098da LB |
3054 | |
3055 | mwl8k_finalize_join(priv->hw, skb->data, skb->len, dtim); | |
3056 | dev_kfree_skb(skb); | |
3057 | ||
3058 | priv->beacon_skb = NULL; | |
3059 | } | |
3060 | ||
3061 | static int __devinit mwl8k_probe(struct pci_dev *pdev, | |
3062 | const struct pci_device_id *id) | |
3063 | { | |
3064 | struct ieee80211_hw *hw; | |
3065 | struct mwl8k_priv *priv; | |
a66098da LB |
3066 | int rc; |
3067 | int i; | |
3068 | u8 *fw; | |
3069 | ||
3070 | rc = pci_enable_device(pdev); | |
3071 | if (rc) { | |
3072 | printk(KERN_ERR "%s: Cannot enable new PCI device\n", | |
3073 | MWL8K_NAME); | |
3074 | return rc; | |
3075 | } | |
3076 | ||
3077 | rc = pci_request_regions(pdev, MWL8K_NAME); | |
3078 | if (rc) { | |
3079 | printk(KERN_ERR "%s: Cannot obtain PCI resources\n", | |
3080 | MWL8K_NAME); | |
3081 | return rc; | |
3082 | } | |
3083 | ||
3084 | pci_set_master(pdev); | |
3085 | ||
3086 | hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops); | |
3087 | if (hw == NULL) { | |
3088 | printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME); | |
3089 | rc = -ENOMEM; | |
3090 | goto err_free_reg; | |
3091 | } | |
3092 | ||
3093 | priv = hw->priv; | |
3094 | priv->hw = hw; | |
3095 | priv->pdev = pdev; | |
0439b1f5 | 3096 | priv->wmm_enabled = false; |
a66098da LB |
3097 | priv->pending_tx_pkts = 0; |
3098 | strncpy(priv->name, MWL8K_NAME, sizeof(priv->name)); | |
3099 | ||
a66098da LB |
3100 | SET_IEEE80211_DEV(hw, &pdev->dev); |
3101 | pci_set_drvdata(pdev, hw); | |
3102 | ||
3103 | priv->regs = pci_iomap(pdev, 1, 0x10000); | |
3104 | if (priv->regs == NULL) { | |
3105 | printk(KERN_ERR "%s: Cannot map device memory\n", priv->name); | |
3106 | goto err_iounmap; | |
3107 | } | |
3108 | ||
3109 | memcpy(priv->channels, mwl8k_channels, sizeof(mwl8k_channels)); | |
3110 | priv->band.band = IEEE80211_BAND_2GHZ; | |
3111 | priv->band.channels = priv->channels; | |
3112 | priv->band.n_channels = ARRAY_SIZE(mwl8k_channels); | |
3113 | priv->band.bitrates = priv->rates; | |
3114 | priv->band.n_bitrates = ARRAY_SIZE(mwl8k_rates); | |
3115 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; | |
3116 | ||
3117 | BUILD_BUG_ON(sizeof(priv->rates) != sizeof(mwl8k_rates)); | |
3118 | memcpy(priv->rates, mwl8k_rates, sizeof(mwl8k_rates)); | |
3119 | ||
3120 | /* | |
3121 | * Extra headroom is the size of the required DMA header | |
3122 | * minus the size of the smallest 802.11 frame (CTS frame). | |
3123 | */ | |
3124 | hw->extra_tx_headroom = | |
3125 | sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts); | |
3126 | ||
3127 | hw->channel_change_time = 10; | |
3128 | ||
3129 | hw->queues = MWL8K_TX_QUEUES; | |
3130 | ||
240e86ef | 3131 | hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); |
a66098da LB |
3132 | |
3133 | /* Set rssi and noise values to dBm */ | |
ce9e2e1b | 3134 | hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM; |
a66098da LB |
3135 | hw->vif_data_size = sizeof(struct mwl8k_vif); |
3136 | priv->vif = NULL; | |
3137 | ||
3138 | /* Set default radio state and preamble */ | |
c46563b7 | 3139 | priv->radio_on = 0; |
68ce3884 | 3140 | priv->radio_short_preamble = 0; |
a66098da LB |
3141 | |
3142 | /* Finalize join worker */ | |
3143 | INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker); | |
3144 | ||
3145 | /* TX reclaim tasklet */ | |
3146 | tasklet_init(&priv->tx_reclaim_task, | |
3147 | mwl8k_tx_reclaim_handler, (unsigned long)hw); | |
3148 | tasklet_disable(&priv->tx_reclaim_task); | |
3149 | ||
3150 | /* Config workthread */ | |
3151 | priv->config_wq = create_singlethread_workqueue("mwl8k_config"); | |
3152 | if (priv->config_wq == NULL) | |
3153 | goto err_iounmap; | |
3154 | ||
3155 | /* Power management cookie */ | |
3156 | priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma); | |
3157 | if (priv->cookie == NULL) | |
3158 | goto err_iounmap; | |
3159 | ||
3160 | rc = mwl8k_rxq_init(hw, 0); | |
3161 | if (rc) | |
3162 | goto err_iounmap; | |
3163 | rxq_refill(hw, 0, INT_MAX); | |
3164 | ||
618952a7 LB |
3165 | mutex_init(&priv->fw_mutex); |
3166 | priv->fw_mutex_owner = NULL; | |
3167 | priv->fw_mutex_depth = 0; | |
3168 | priv->tx_wait = NULL; | |
3169 | priv->hostcmd_wait = NULL; | |
3170 | ||
a66098da LB |
3171 | spin_lock_init(&priv->tx_lock); |
3172 | ||
3173 | for (i = 0; i < MWL8K_TX_QUEUES; i++) { | |
3174 | rc = mwl8k_txq_init(hw, i); | |
3175 | if (rc) | |
3176 | goto err_free_queues; | |
3177 | } | |
3178 | ||
3179 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS); | |
c23b5a69 | 3180 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
3181 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL); |
3182 | iowrite32(0xffffffff, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK); | |
3183 | ||
3184 | rc = request_irq(priv->pdev->irq, &mwl8k_interrupt, | |
3185 | IRQF_SHARED, MWL8K_NAME, hw); | |
3186 | if (rc) { | |
3187 | printk(KERN_ERR "%s: failed to register IRQ handler\n", | |
3188 | priv->name); | |
3189 | goto err_free_queues; | |
3190 | } | |
3191 | ||
3192 | /* Reset firmware and hardware */ | |
3193 | mwl8k_hw_reset(priv); | |
3194 | ||
3195 | /* Ask userland hotplug daemon for the device firmware */ | |
3196 | rc = mwl8k_request_firmware(priv, (u32)id->driver_data); | |
3197 | if (rc) { | |
3198 | printk(KERN_ERR "%s: Firmware files not found\n", priv->name); | |
3199 | goto err_free_irq; | |
3200 | } | |
3201 | ||
3202 | /* Load firmware into hardware */ | |
3203 | rc = mwl8k_load_firmware(priv); | |
3204 | if (rc) { | |
3205 | printk(KERN_ERR "%s: Cannot start firmware\n", priv->name); | |
3206 | goto err_stop_firmware; | |
3207 | } | |
3208 | ||
3209 | /* Reclaim memory once firmware is successfully loaded */ | |
3210 | mwl8k_release_firmware(priv); | |
3211 | ||
3212 | /* | |
3213 | * Temporarily enable interrupts. Initial firmware host | |
3214 | * commands use interrupts and avoids polling. Disable | |
3215 | * interrupts when done. | |
3216 | */ | |
c23b5a69 | 3217 | iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
3218 | |
3219 | /* Get config data, mac addrs etc */ | |
3220 | rc = mwl8k_cmd_get_hw_spec(hw); | |
3221 | if (rc) { | |
3222 | printk(KERN_ERR "%s: Cannot initialise firmware\n", priv->name); | |
3223 | goto err_stop_firmware; | |
3224 | } | |
3225 | ||
3226 | /* Turn radio off */ | |
c46563b7 | 3227 | rc = mwl8k_cmd_802_11_radio_disable(hw); |
a66098da LB |
3228 | if (rc) { |
3229 | printk(KERN_ERR "%s: Cannot disable\n", priv->name); | |
3230 | goto err_stop_firmware; | |
3231 | } | |
3232 | ||
3233 | /* Disable interrupts */ | |
a66098da | 3234 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
3235 | free_irq(priv->pdev->irq, hw); |
3236 | ||
3237 | rc = ieee80211_register_hw(hw); | |
3238 | if (rc) { | |
3239 | printk(KERN_ERR "%s: Cannot register device\n", priv->name); | |
3240 | goto err_stop_firmware; | |
3241 | } | |
3242 | ||
3243 | fw = (u8 *)&priv->fw_rev; | |
3244 | printk(KERN_INFO "%s: 88W%u %s\n", priv->name, priv->part_num, | |
3245 | MWL8K_DESC); | |
3246 | printk(KERN_INFO "%s: Driver Ver:%s Firmware Ver:%u.%u.%u.%u\n", | |
3247 | priv->name, MWL8K_VERSION, fw[3], fw[2], fw[1], fw[0]); | |
e91d8334 JB |
3248 | printk(KERN_INFO "%s: MAC Address: %pM\n", priv->name, |
3249 | hw->wiphy->perm_addr); | |
a66098da LB |
3250 | |
3251 | return 0; | |
3252 | ||
3253 | err_stop_firmware: | |
3254 | mwl8k_hw_reset(priv); | |
3255 | mwl8k_release_firmware(priv); | |
3256 | ||
3257 | err_free_irq: | |
a66098da | 3258 | iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK); |
a66098da LB |
3259 | free_irq(priv->pdev->irq, hw); |
3260 | ||
3261 | err_free_queues: | |
3262 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3263 | mwl8k_txq_deinit(hw, i); | |
3264 | mwl8k_rxq_deinit(hw, 0); | |
3265 | ||
3266 | err_iounmap: | |
3267 | if (priv->cookie != NULL) | |
3268 | pci_free_consistent(priv->pdev, 4, | |
3269 | priv->cookie, priv->cookie_dma); | |
3270 | ||
3271 | if (priv->regs != NULL) | |
3272 | pci_iounmap(pdev, priv->regs); | |
3273 | ||
3274 | if (priv->config_wq != NULL) | |
3275 | destroy_workqueue(priv->config_wq); | |
3276 | ||
3277 | pci_set_drvdata(pdev, NULL); | |
3278 | ieee80211_free_hw(hw); | |
3279 | ||
3280 | err_free_reg: | |
3281 | pci_release_regions(pdev); | |
3282 | pci_disable_device(pdev); | |
3283 | ||
3284 | return rc; | |
3285 | } | |
3286 | ||
230f7af0 | 3287 | static void __devexit mwl8k_shutdown(struct pci_dev *pdev) |
a66098da LB |
3288 | { |
3289 | printk(KERN_ERR "===>%s(%u)\n", __func__, __LINE__); | |
3290 | } | |
3291 | ||
230f7af0 | 3292 | static void __devexit mwl8k_remove(struct pci_dev *pdev) |
a66098da LB |
3293 | { |
3294 | struct ieee80211_hw *hw = pci_get_drvdata(pdev); | |
3295 | struct mwl8k_priv *priv; | |
3296 | int i; | |
3297 | ||
3298 | if (hw == NULL) | |
3299 | return; | |
3300 | priv = hw->priv; | |
3301 | ||
3302 | ieee80211_stop_queues(hw); | |
3303 | ||
60aa569f LB |
3304 | ieee80211_unregister_hw(hw); |
3305 | ||
a66098da LB |
3306 | /* Remove tx reclaim tasklet */ |
3307 | tasklet_kill(&priv->tx_reclaim_task); | |
3308 | ||
3309 | /* Stop config thread */ | |
3310 | destroy_workqueue(priv->config_wq); | |
3311 | ||
3312 | /* Stop hardware */ | |
3313 | mwl8k_hw_reset(priv); | |
3314 | ||
3315 | /* Return all skbs to mac80211 */ | |
3316 | for (i = 0; i < MWL8K_TX_QUEUES; i++) | |
3317 | mwl8k_txq_reclaim(hw, i, 1); | |
3318 | ||
a66098da LB |
3319 | for (i = 0; i < MWL8K_TX_QUEUES; i++) |
3320 | mwl8k_txq_deinit(hw, i); | |
3321 | ||
3322 | mwl8k_rxq_deinit(hw, 0); | |
3323 | ||
3324 | pci_free_consistent(priv->pdev, 4, | |
3325 | priv->cookie, priv->cookie_dma); | |
3326 | ||
3327 | pci_iounmap(pdev, priv->regs); | |
3328 | pci_set_drvdata(pdev, NULL); | |
3329 | ieee80211_free_hw(hw); | |
3330 | pci_release_regions(pdev); | |
3331 | pci_disable_device(pdev); | |
3332 | } | |
3333 | ||
3334 | static struct pci_driver mwl8k_driver = { | |
3335 | .name = MWL8K_NAME, | |
3336 | .id_table = mwl8k_table, | |
3337 | .probe = mwl8k_probe, | |
3338 | .remove = __devexit_p(mwl8k_remove), | |
3339 | .shutdown = __devexit_p(mwl8k_shutdown), | |
3340 | }; | |
3341 | ||
3342 | static int __init mwl8k_init(void) | |
3343 | { | |
3344 | return pci_register_driver(&mwl8k_driver); | |
3345 | } | |
3346 | ||
3347 | static void __exit mwl8k_exit(void) | |
3348 | { | |
3349 | pci_unregister_driver(&mwl8k_driver); | |
3350 | } | |
3351 | ||
3352 | module_init(mwl8k_init); | |
3353 | module_exit(mwl8k_exit); |