Commit | Line | Data |
---|---|---|
691cdb49 LCC |
1 | /* |
2 | * Copyright (C) 2008, cozybit Inc. | |
3 | * Copyright (C) 2003-2006, Marvell International Ltd. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or (at | |
8 | * your option) any later version. | |
9 | */ | |
edfcba15 JL |
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
11 | ||
a6b7a407 | 12 | #include <linux/hardirq.h> |
5a0e3ad6 TH |
13 | #include <linux/slab.h> |
14 | ||
691cdb49 LCC |
15 | #include "libertas_tf.h" |
16 | ||
17 | static const struct channel_range channel_ranges[] = { | |
18 | { LBTF_REGDOMAIN_US, 1, 12 }, | |
19 | { LBTF_REGDOMAIN_CA, 1, 12 }, | |
20 | { LBTF_REGDOMAIN_EU, 1, 14 }, | |
21 | { LBTF_REGDOMAIN_JP, 1, 14 }, | |
22 | { LBTF_REGDOMAIN_SP, 1, 14 }, | |
23 | { LBTF_REGDOMAIN_FR, 1, 14 }, | |
24 | }; | |
25 | ||
26 | static u16 lbtf_region_code_to_index[MRVDRV_MAX_REGION_CODE] = | |
27 | { | |
28 | LBTF_REGDOMAIN_US, LBTF_REGDOMAIN_CA, LBTF_REGDOMAIN_EU, | |
29 | LBTF_REGDOMAIN_SP, LBTF_REGDOMAIN_FR, LBTF_REGDOMAIN_JP, | |
30 | }; | |
31 | ||
32 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv); | |
33 | ||
34 | ||
35 | /** | |
36 | * lbtf_cmd_copyback - Simple callback that copies response back into command | |
37 | * | |
38 | * @priv A pointer to struct lbtf_private structure | |
39 | * @extra A pointer to the original command structure for which | |
40 | * 'resp' is a response | |
41 | * @resp A pointer to the command response | |
42 | * | |
43 | * Returns: 0 on success, error on failure | |
44 | */ | |
45 | int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra, | |
46 | struct cmd_header *resp) | |
47 | { | |
48 | struct cmd_header *buf = (void *)extra; | |
49 | uint16_t copy_len; | |
50 | ||
51 | copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size)); | |
52 | memcpy(buf, resp, copy_len); | |
53 | return 0; | |
54 | } | |
55 | EXPORT_SYMBOL_GPL(lbtf_cmd_copyback); | |
56 | ||
57 | #define CHAN_TO_IDX(chan) ((chan) - 1) | |
58 | ||
59 | static void lbtf_geo_init(struct lbtf_private *priv) | |
60 | { | |
61 | const struct channel_range *range = channel_ranges; | |
62 | u8 ch; | |
63 | int i; | |
64 | ||
65 | for (i = 0; i < ARRAY_SIZE(channel_ranges); i++) | |
66 | if (channel_ranges[i].regdomain == priv->regioncode) { | |
67 | range = &channel_ranges[i]; | |
68 | break; | |
69 | } | |
70 | ||
71 | for (ch = priv->range.start; ch < priv->range.end; ch++) | |
72 | priv->channels[CHAN_TO_IDX(ch)].flags = 0; | |
73 | } | |
74 | ||
75 | /** | |
76 | * lbtf_update_hw_spec: Updates the hardware details. | |
77 | * | |
78 | * @priv A pointer to struct lbtf_private structure | |
79 | * | |
80 | * Returns: 0 on success, error on failure | |
81 | */ | |
82 | int lbtf_update_hw_spec(struct lbtf_private *priv) | |
83 | { | |
84 | struct cmd_ds_get_hw_spec cmd; | |
85 | int ret = -1; | |
86 | u32 i; | |
691cdb49 | 87 | |
e9bd5bcd S |
88 | lbtf_deb_enter(LBTF_DEB_CMD); |
89 | ||
691cdb49 LCC |
90 | memset(&cmd, 0, sizeof(cmd)); |
91 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
92 | memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN); | |
93 | ret = lbtf_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd); | |
94 | if (ret) | |
95 | goto out; | |
96 | ||
97 | priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo); | |
98 | ||
99 | /* The firmware release is in an interesting format: the patch | |
100 | * level is in the most significant nibble ... so fix that: */ | |
101 | priv->fwrelease = le32_to_cpu(cmd.fwrelease); | |
102 | priv->fwrelease = (priv->fwrelease << 8) | | |
103 | (priv->fwrelease >> 24 & 0xff); | |
104 | ||
e174961c JB |
105 | printk(KERN_INFO "libertastf: %pM, fw %u.%u.%up%u, cap 0x%08x\n", |
106 | cmd.permanentaddr, | |
691cdb49 LCC |
107 | priv->fwrelease >> 24 & 0xff, |
108 | priv->fwrelease >> 16 & 0xff, | |
109 | priv->fwrelease >> 8 & 0xff, | |
110 | priv->fwrelease & 0xff, | |
111 | priv->fwcapinfo); | |
e9bd5bcd S |
112 | lbtf_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n", |
113 | cmd.hwifversion, cmd.version); | |
691cdb49 LCC |
114 | |
115 | /* Clamp region code to 8-bit since FW spec indicates that it should | |
116 | * only ever be 8-bit, even though the field size is 16-bit. Some | |
117 | * firmware returns non-zero high 8 bits here. | |
118 | */ | |
119 | priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF; | |
120 | ||
121 | for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) { | |
122 | /* use the region code to search for the index */ | |
123 | if (priv->regioncode == lbtf_region_code_to_index[i]) | |
124 | break; | |
125 | } | |
126 | ||
127 | /* if it's unidentified region code, use the default (USA) */ | |
e9bd5bcd | 128 | if (i >= MRVDRV_MAX_REGION_CODE) { |
691cdb49 | 129 | priv->regioncode = 0x10; |
e9bd5bcd S |
130 | pr_info("unidentified region code; using the default (USA)\n"); |
131 | } | |
691cdb49 LCC |
132 | |
133 | if (priv->current_addr[0] == 0xff) | |
134 | memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN); | |
135 | ||
136 | SET_IEEE80211_PERM_ADDR(priv->hw, priv->current_addr); | |
137 | ||
138 | lbtf_geo_init(priv); | |
139 | out: | |
e9bd5bcd | 140 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
141 | return ret; |
142 | } | |
143 | ||
144 | /** | |
145 | * lbtf_set_channel: Set the radio channel | |
146 | * | |
147 | * @priv A pointer to struct lbtf_private structure | |
148 | * @channel The desired channel, or 0 to clear a locked channel | |
149 | * | |
150 | * Returns: 0 on success, error on failure | |
151 | */ | |
152 | int lbtf_set_channel(struct lbtf_private *priv, u8 channel) | |
153 | { | |
e9bd5bcd | 154 | int ret = 0; |
691cdb49 LCC |
155 | struct cmd_ds_802_11_rf_channel cmd; |
156 | ||
e9bd5bcd S |
157 | lbtf_deb_enter(LBTF_DEB_CMD); |
158 | ||
691cdb49 LCC |
159 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
160 | cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET); | |
161 | cmd.channel = cpu_to_le16(channel); | |
162 | ||
e9bd5bcd S |
163 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd); |
164 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); | |
165 | return ret; | |
691cdb49 LCC |
166 | } |
167 | ||
168 | int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon) | |
169 | { | |
170 | struct cmd_ds_802_11_beacon_set cmd; | |
171 | int size; | |
172 | ||
e9bd5bcd S |
173 | lbtf_deb_enter(LBTF_DEB_CMD); |
174 | ||
175 | if (beacon->len > MRVL_MAX_BCN_SIZE) { | |
176 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", -1); | |
691cdb49 | 177 | return -1; |
e9bd5bcd | 178 | } |
691cdb49 LCC |
179 | size = sizeof(cmd) - sizeof(cmd.beacon) + beacon->len; |
180 | cmd.hdr.size = cpu_to_le16(size); | |
181 | cmd.len = cpu_to_le16(beacon->len); | |
182 | memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len); | |
183 | ||
184 | lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size); | |
e9bd5bcd S |
185 | |
186 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", 0); | |
691cdb49 LCC |
187 | return 0; |
188 | } | |
189 | ||
190 | int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable, | |
e9bd5bcd S |
191 | int beacon_int) |
192 | { | |
691cdb49 | 193 | struct cmd_ds_802_11_beacon_control cmd; |
e9bd5bcd | 194 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
195 | |
196 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
197 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
198 | cmd.beacon_enable = cpu_to_le16(beacon_enable); | |
199 | cmd.beacon_period = cpu_to_le16(beacon_int); | |
200 | ||
201 | lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
202 | |
203 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
204 | return 0; |
205 | } | |
206 | ||
207 | static void lbtf_queue_cmd(struct lbtf_private *priv, | |
208 | struct cmd_ctrl_node *cmdnode) | |
209 | { | |
210 | unsigned long flags; | |
e9bd5bcd | 211 | lbtf_deb_enter(LBTF_DEB_HOST); |
691cdb49 | 212 | |
e9bd5bcd S |
213 | if (!cmdnode) { |
214 | lbtf_deb_host("QUEUE_CMD: cmdnode is NULL\n"); | |
215 | goto qcmd_done; | |
216 | } | |
691cdb49 | 217 | |
e9bd5bcd S |
218 | if (!cmdnode->cmdbuf->size) { |
219 | lbtf_deb_host("DNLD_CMD: cmd size is zero\n"); | |
220 | goto qcmd_done; | |
221 | } | |
691cdb49 LCC |
222 | |
223 | cmdnode->result = 0; | |
224 | spin_lock_irqsave(&priv->driver_lock, flags); | |
225 | list_add_tail(&cmdnode->list, &priv->cmdpendingq); | |
226 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
e9bd5bcd S |
227 | |
228 | lbtf_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n", | |
229 | le16_to_cpu(cmdnode->cmdbuf->command)); | |
230 | ||
231 | qcmd_done: | |
232 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
233 | } |
234 | ||
235 | static void lbtf_submit_command(struct lbtf_private *priv, | |
236 | struct cmd_ctrl_node *cmdnode) | |
237 | { | |
238 | unsigned long flags; | |
239 | struct cmd_header *cmd; | |
240 | uint16_t cmdsize; | |
241 | uint16_t command; | |
242 | int timeo = 5 * HZ; | |
243 | int ret; | |
244 | ||
e9bd5bcd S |
245 | lbtf_deb_enter(LBTF_DEB_HOST); |
246 | ||
691cdb49 LCC |
247 | cmd = cmdnode->cmdbuf; |
248 | ||
249 | spin_lock_irqsave(&priv->driver_lock, flags); | |
250 | priv->cur_cmd = cmdnode; | |
251 | cmdsize = le16_to_cpu(cmd->size); | |
252 | command = le16_to_cpu(cmd->command); | |
e9bd5bcd S |
253 | |
254 | lbtf_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n", | |
255 | command, le16_to_cpu(cmd->seqnum), cmdsize); | |
256 | lbtf_deb_hex(LBTF_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize); | |
257 | ||
691cdb49 LCC |
258 | ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize); |
259 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
260 | ||
e9bd5bcd S |
261 | if (ret) { |
262 | pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret); | |
691cdb49 LCC |
263 | /* Let the timer kick in and retry, and potentially reset |
264 | the whole thing if the condition persists */ | |
265 | timeo = HZ; | |
e9bd5bcd | 266 | } |
691cdb49 LCC |
267 | |
268 | /* Setup the timer after transmit command */ | |
269 | mod_timer(&priv->command_timer, jiffies + timeo); | |
e9bd5bcd S |
270 | |
271 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
272 | } |
273 | ||
274 | /** | |
275 | * This function inserts command node to cmdfreeq | |
276 | * after cleans it. Requires priv->driver_lock held. | |
277 | */ | |
278 | static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, | |
279 | struct cmd_ctrl_node *cmdnode) | |
280 | { | |
e9bd5bcd S |
281 | lbtf_deb_enter(LBTF_DEB_HOST); |
282 | ||
691cdb49 | 283 | if (!cmdnode) |
e9bd5bcd | 284 | goto cl_ins_out; |
691cdb49 LCC |
285 | |
286 | cmdnode->callback = NULL; | |
287 | cmdnode->callback_arg = 0; | |
288 | ||
289 | memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE); | |
290 | ||
291 | list_add_tail(&cmdnode->list, &priv->cmdfreeq); | |
e9bd5bcd S |
292 | |
293 | cl_ins_out: | |
294 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
295 | } |
296 | ||
297 | static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, | |
298 | struct cmd_ctrl_node *ptempcmd) | |
299 | { | |
300 | unsigned long flags; | |
301 | ||
302 | spin_lock_irqsave(&priv->driver_lock, flags); | |
303 | __lbtf_cleanup_and_insert_cmd(priv, ptempcmd); | |
304 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
305 | } | |
306 | ||
307 | void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd, | |
308 | int result) | |
309 | { | |
310 | cmd->result = result; | |
311 | cmd->cmdwaitqwoken = 1; | |
312 | wake_up_interruptible(&cmd->cmdwait_q); | |
313 | ||
314 | if (!cmd->callback) | |
315 | __lbtf_cleanup_and_insert_cmd(priv, cmd); | |
316 | priv->cur_cmd = NULL; | |
317 | } | |
318 | ||
319 | int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv) | |
320 | { | |
321 | struct cmd_ds_mac_multicast_addr cmd; | |
322 | ||
e9bd5bcd S |
323 | lbtf_deb_enter(LBTF_DEB_CMD); |
324 | ||
691cdb49 LCC |
325 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
326 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
327 | ||
328 | cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr); | |
e9bd5bcd S |
329 | |
330 | lbtf_deb_cmd("MULTICAST_ADR: setting %d addresses\n", cmd.nr_of_adrs); | |
331 | ||
691cdb49 LCC |
332 | memcpy(cmd.maclist, priv->multicastlist, |
333 | priv->nr_of_multicastmacaddr * ETH_ALEN); | |
334 | ||
335 | lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
336 | |
337 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
338 | return 0; |
339 | } | |
340 | ||
341 | void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode) | |
342 | { | |
343 | struct cmd_ds_set_mode cmd; | |
e9bd5bcd | 344 | lbtf_deb_enter(LBTF_DEB_WEXT); |
691cdb49 LCC |
345 | |
346 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
347 | cmd.mode = cpu_to_le16(mode); | |
e9bd5bcd | 348 | lbtf_deb_wext("Switching to mode: 0x%x\n", mode); |
691cdb49 | 349 | lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd)); |
e9bd5bcd S |
350 | |
351 | lbtf_deb_leave(LBTF_DEB_WEXT); | |
691cdb49 LCC |
352 | } |
353 | ||
5f936f11 | 354 | void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid) |
691cdb49 LCC |
355 | { |
356 | struct cmd_ds_set_bssid cmd; | |
e9bd5bcd | 357 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
358 | |
359 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
360 | cmd.activate = activate ? 1 : 0; | |
361 | if (activate) | |
362 | memcpy(cmd.bssid, bssid, ETH_ALEN); | |
363 | ||
364 | lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd | 365 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
366 | } |
367 | ||
368 | int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr) | |
369 | { | |
370 | struct cmd_ds_802_11_mac_address cmd; | |
e9bd5bcd | 371 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
372 | |
373 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
374 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
375 | ||
376 | memcpy(cmd.macadd, mac_addr, ETH_ALEN); | |
377 | ||
378 | lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd | 379 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
380 | return 0; |
381 | } | |
382 | ||
383 | int lbtf_set_radio_control(struct lbtf_private *priv) | |
384 | { | |
385 | int ret = 0; | |
386 | struct cmd_ds_802_11_radio_control cmd; | |
387 | ||
e9bd5bcd S |
388 | lbtf_deb_enter(LBTF_DEB_CMD); |
389 | ||
691cdb49 LCC |
390 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
391 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
392 | ||
393 | switch (priv->preamble) { | |
394 | case CMD_TYPE_SHORT_PREAMBLE: | |
395 | cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE); | |
396 | break; | |
397 | ||
398 | case CMD_TYPE_LONG_PREAMBLE: | |
399 | cmd.control = cpu_to_le16(SET_LONG_PREAMBLE); | |
400 | break; | |
401 | ||
402 | case CMD_TYPE_AUTO_PREAMBLE: | |
403 | default: | |
404 | cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE); | |
405 | break; | |
406 | } | |
407 | ||
408 | if (priv->radioon) | |
409 | cmd.control |= cpu_to_le16(TURN_ON_RF); | |
410 | else | |
411 | cmd.control &= cpu_to_le16(~TURN_ON_RF); | |
412 | ||
e9bd5bcd S |
413 | lbtf_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon, |
414 | priv->preamble); | |
415 | ||
691cdb49 | 416 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd); |
e9bd5bcd S |
417 | |
418 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); | |
691cdb49 LCC |
419 | return ret; |
420 | } | |
421 | ||
422 | void lbtf_set_mac_control(struct lbtf_private *priv) | |
423 | { | |
424 | struct cmd_ds_mac_control cmd; | |
e9bd5bcd S |
425 | lbtf_deb_enter(LBTF_DEB_CMD); |
426 | ||
691cdb49 LCC |
427 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
428 | cmd.action = cpu_to_le16(priv->mac_control); | |
429 | cmd.reserved = 0; | |
430 | ||
431 | lbtf_cmd_async(priv, CMD_MAC_CONTROL, | |
432 | &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
433 | |
434 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
435 | } |
436 | ||
437 | /** | |
438 | * lbtf_allocate_cmd_buffer - Allocates cmd buffer, links it to free cmd queue | |
439 | * | |
440 | * @priv A pointer to struct lbtf_private structure | |
441 | * | |
442 | * Returns: 0 on success. | |
443 | */ | |
444 | int lbtf_allocate_cmd_buffer(struct lbtf_private *priv) | |
445 | { | |
e9bd5bcd | 446 | int ret = 0; |
691cdb49 LCC |
447 | u32 bufsize; |
448 | u32 i; | |
449 | struct cmd_ctrl_node *cmdarray; | |
450 | ||
e9bd5bcd S |
451 | lbtf_deb_enter(LBTF_DEB_HOST); |
452 | ||
691cdb49 LCC |
453 | /* Allocate and initialize the command array */ |
454 | bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS; | |
455 | cmdarray = kzalloc(bufsize, GFP_KERNEL); | |
e9bd5bcd S |
456 | if (!cmdarray) { |
457 | lbtf_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n"); | |
458 | ret = -1; | |
459 | goto done; | |
460 | } | |
691cdb49 LCC |
461 | priv->cmd_array = cmdarray; |
462 | ||
463 | /* Allocate and initialize each command buffer in the command array */ | |
464 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
465 | cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL); | |
e9bd5bcd S |
466 | if (!cmdarray[i].cmdbuf) { |
467 | lbtf_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n"); | |
468 | ret = -1; | |
469 | goto done; | |
470 | } | |
691cdb49 LCC |
471 | } |
472 | ||
473 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
474 | init_waitqueue_head(&cmdarray[i].cmdwait_q); | |
475 | lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]); | |
476 | } | |
e9bd5bcd S |
477 | |
478 | ret = 0; | |
479 | ||
480 | done: | |
481 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); | |
482 | return ret; | |
691cdb49 LCC |
483 | } |
484 | ||
485 | /** | |
486 | * lbtf_free_cmd_buffer - Frees the cmd buffer. | |
487 | * | |
488 | * @priv A pointer to struct lbtf_private structure | |
489 | * | |
490 | * Returns: 0 | |
491 | */ | |
492 | int lbtf_free_cmd_buffer(struct lbtf_private *priv) | |
493 | { | |
494 | struct cmd_ctrl_node *cmdarray; | |
495 | unsigned int i; | |
496 | ||
e9bd5bcd S |
497 | lbtf_deb_enter(LBTF_DEB_HOST); |
498 | ||
691cdb49 | 499 | /* need to check if cmd array is allocated or not */ |
e9bd5bcd S |
500 | if (priv->cmd_array == NULL) { |
501 | lbtf_deb_host("FREE_CMD_BUF: cmd_array is NULL\n"); | |
502 | goto done; | |
503 | } | |
691cdb49 LCC |
504 | |
505 | cmdarray = priv->cmd_array; | |
506 | ||
507 | /* Release shared memory buffers */ | |
508 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
509 | kfree(cmdarray[i].cmdbuf); | |
510 | cmdarray[i].cmdbuf = NULL; | |
511 | } | |
512 | ||
513 | /* Release cmd_ctrl_node */ | |
514 | kfree(priv->cmd_array); | |
515 | priv->cmd_array = NULL; | |
516 | ||
e9bd5bcd S |
517 | done: |
518 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
519 | return 0; |
520 | } | |
521 | ||
522 | /** | |
523 | * lbtf_get_cmd_ctrl_node - Gets free cmd node from free cmd queue. | |
524 | * | |
525 | * @priv A pointer to struct lbtf_private structure | |
526 | * | |
527 | * Returns: pointer to a struct cmd_ctrl_node or NULL if none available. | |
528 | */ | |
529 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv) | |
530 | { | |
531 | struct cmd_ctrl_node *tempnode; | |
532 | unsigned long flags; | |
533 | ||
e9bd5bcd S |
534 | lbtf_deb_enter(LBTF_DEB_HOST); |
535 | ||
691cdb49 LCC |
536 | if (!priv) |
537 | return NULL; | |
538 | ||
539 | spin_lock_irqsave(&priv->driver_lock, flags); | |
540 | ||
541 | if (!list_empty(&priv->cmdfreeq)) { | |
542 | tempnode = list_first_entry(&priv->cmdfreeq, | |
543 | struct cmd_ctrl_node, list); | |
544 | list_del(&tempnode->list); | |
e9bd5bcd S |
545 | } else { |
546 | lbtf_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n"); | |
691cdb49 | 547 | tempnode = NULL; |
e9bd5bcd | 548 | } |
691cdb49 LCC |
549 | |
550 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
551 | ||
e9bd5bcd | 552 | lbtf_deb_leave(LBTF_DEB_HOST); |
691cdb49 LCC |
553 | return tempnode; |
554 | } | |
555 | ||
556 | /** | |
557 | * lbtf_execute_next_command: execute next command in cmd pending queue. | |
558 | * | |
559 | * @priv A pointer to struct lbtf_private structure | |
560 | * | |
561 | * Returns: 0 on success. | |
562 | */ | |
563 | int lbtf_execute_next_command(struct lbtf_private *priv) | |
564 | { | |
565 | struct cmd_ctrl_node *cmdnode = NULL; | |
566 | struct cmd_header *cmd; | |
567 | unsigned long flags; | |
e9bd5bcd | 568 | int ret = 0; |
691cdb49 | 569 | |
e9bd5bcd | 570 | /* Debug group is lbtf_deb_THREAD and not lbtf_deb_HOST, because the |
691cdb49 LCC |
571 | * only caller to us is lbtf_thread() and we get even when a |
572 | * data packet is received */ | |
e9bd5bcd | 573 | lbtf_deb_enter(LBTF_DEB_THREAD); |
691cdb49 LCC |
574 | |
575 | spin_lock_irqsave(&priv->driver_lock, flags); | |
576 | ||
577 | if (priv->cur_cmd) { | |
e9bd5bcd | 578 | pr_alert("EXEC_NEXT_CMD: already processing command!\n"); |
691cdb49 | 579 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
e9bd5bcd S |
580 | ret = -1; |
581 | goto done; | |
691cdb49 LCC |
582 | } |
583 | ||
584 | if (!list_empty(&priv->cmdpendingq)) { | |
585 | cmdnode = list_first_entry(&priv->cmdpendingq, | |
586 | struct cmd_ctrl_node, list); | |
587 | } | |
588 | ||
589 | if (cmdnode) { | |
590 | cmd = cmdnode->cmdbuf; | |
591 | ||
592 | list_del(&cmdnode->list); | |
e9bd5bcd S |
593 | lbtf_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n", |
594 | le16_to_cpu(cmd->command)); | |
691cdb49 LCC |
595 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
596 | lbtf_submit_command(priv, cmdnode); | |
597 | } else | |
598 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
e9bd5bcd S |
599 | |
600 | ret = 0; | |
601 | done: | |
602 | lbtf_deb_leave(LBTF_DEB_THREAD); | |
603 | return ret; | |
691cdb49 LCC |
604 | } |
605 | ||
606 | static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv, | |
607 | uint16_t command, struct cmd_header *in_cmd, int in_cmd_size, | |
608 | int (*callback)(struct lbtf_private *, unsigned long, | |
609 | struct cmd_header *), | |
610 | unsigned long callback_arg) | |
611 | { | |
612 | struct cmd_ctrl_node *cmdnode; | |
613 | ||
e9bd5bcd S |
614 | lbtf_deb_enter(LBTF_DEB_HOST); |
615 | ||
616 | if (priv->surpriseremoved) { | |
617 | lbtf_deb_host("PREP_CMD: card removed\n"); | |
618 | cmdnode = ERR_PTR(-ENOENT); | |
619 | goto done; | |
620 | } | |
691cdb49 LCC |
621 | |
622 | cmdnode = lbtf_get_cmd_ctrl_node(priv); | |
623 | if (cmdnode == NULL) { | |
e9bd5bcd S |
624 | lbtf_deb_host("PREP_CMD: cmdnode is NULL\n"); |
625 | ||
691cdb49 LCC |
626 | /* Wake up main thread to execute next command */ |
627 | queue_work(lbtf_wq, &priv->cmd_work); | |
e9bd5bcd S |
628 | cmdnode = ERR_PTR(-ENOBUFS); |
629 | goto done; | |
691cdb49 LCC |
630 | } |
631 | ||
632 | cmdnode->callback = callback; | |
633 | cmdnode->callback_arg = callback_arg; | |
634 | ||
635 | /* Copy the incoming command to the buffer */ | |
636 | memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size); | |
637 | ||
638 | /* Set sequence number, clean result, move to buffer */ | |
639 | priv->seqnum++; | |
640 | cmdnode->cmdbuf->command = cpu_to_le16(command); | |
641 | cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size); | |
642 | cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum); | |
643 | cmdnode->cmdbuf->result = 0; | |
e9bd5bcd S |
644 | |
645 | lbtf_deb_host("PREP_CMD: command 0x%04x\n", command); | |
646 | ||
691cdb49 LCC |
647 | cmdnode->cmdwaitqwoken = 0; |
648 | lbtf_queue_cmd(priv, cmdnode); | |
649 | queue_work(lbtf_wq, &priv->cmd_work); | |
650 | ||
e9bd5bcd S |
651 | done: |
652 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode); | |
691cdb49 LCC |
653 | return cmdnode; |
654 | } | |
655 | ||
656 | void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command, | |
657 | struct cmd_header *in_cmd, int in_cmd_size) | |
658 | { | |
e9bd5bcd | 659 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 | 660 | __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0); |
e9bd5bcd | 661 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
662 | } |
663 | ||
664 | int __lbtf_cmd(struct lbtf_private *priv, uint16_t command, | |
665 | struct cmd_header *in_cmd, int in_cmd_size, | |
666 | int (*callback)(struct lbtf_private *, | |
667 | unsigned long, struct cmd_header *), | |
668 | unsigned long callback_arg) | |
669 | { | |
670 | struct cmd_ctrl_node *cmdnode; | |
671 | unsigned long flags; | |
672 | int ret = 0; | |
673 | ||
e9bd5bcd S |
674 | lbtf_deb_enter(LBTF_DEB_HOST); |
675 | ||
691cdb49 LCC |
676 | cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, |
677 | callback, callback_arg); | |
e9bd5bcd S |
678 | if (IS_ERR(cmdnode)) { |
679 | ret = PTR_ERR(cmdnode); | |
680 | goto done; | |
681 | } | |
691cdb49 LCC |
682 | |
683 | might_sleep(); | |
684 | ret = wait_event_interruptible(cmdnode->cmdwait_q, | |
685 | cmdnode->cmdwaitqwoken); | |
e9bd5bcd S |
686 | if (ret) { |
687 | pr_info("PREP_CMD: command 0x%04x interrupted by signal: %d\n", | |
688 | command, ret); | |
689 | goto done; | |
691cdb49 LCC |
690 | } |
691 | ||
692 | spin_lock_irqsave(&priv->driver_lock, flags); | |
693 | ret = cmdnode->result; | |
694 | if (ret) | |
e9bd5bcd | 695 | pr_info("PREP_CMD: command 0x%04x failed: %d\n", |
691cdb49 LCC |
696 | command, ret); |
697 | ||
698 | __lbtf_cleanup_and_insert_cmd(priv, cmdnode); | |
699 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
700 | ||
e9bd5bcd S |
701 | done: |
702 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); | |
691cdb49 LCC |
703 | return ret; |
704 | } | |
705 | EXPORT_SYMBOL_GPL(__lbtf_cmd); | |
706 | ||
707 | /* Call holding driver_lock */ | |
708 | void lbtf_cmd_response_rx(struct lbtf_private *priv) | |
709 | { | |
710 | priv->cmd_response_rxed = 1; | |
711 | queue_work(lbtf_wq, &priv->cmd_work); | |
712 | } | |
713 | EXPORT_SYMBOL_GPL(lbtf_cmd_response_rx); | |
714 | ||
715 | int lbtf_process_rx_command(struct lbtf_private *priv) | |
716 | { | |
717 | uint16_t respcmd, curcmd; | |
718 | struct cmd_header *resp; | |
719 | int ret = 0; | |
720 | unsigned long flags; | |
721 | uint16_t result; | |
722 | ||
e9bd5bcd S |
723 | lbtf_deb_enter(LBTF_DEB_CMD); |
724 | ||
691cdb49 LCC |
725 | mutex_lock(&priv->lock); |
726 | spin_lock_irqsave(&priv->driver_lock, flags); | |
727 | ||
728 | if (!priv->cur_cmd) { | |
729 | ret = -1; | |
730 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
731 | goto done; | |
732 | } | |
733 | ||
734 | resp = (void *)priv->cmd_resp_buff; | |
735 | curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command); | |
736 | respcmd = le16_to_cpu(resp->command); | |
737 | result = le16_to_cpu(resp->result); | |
738 | ||
739 | if (net_ratelimit()) | |
e9bd5bcd | 740 | pr_info("libertastf: cmd response 0x%04x, seq %d, size %d\n", |
691cdb49 LCC |
741 | respcmd, le16_to_cpu(resp->seqnum), |
742 | le16_to_cpu(resp->size)); | |
743 | ||
744 | if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) { | |
745 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
746 | ret = -1; | |
747 | goto done; | |
748 | } | |
749 | if (respcmd != CMD_RET(curcmd)) { | |
750 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
751 | ret = -1; | |
752 | goto done; | |
753 | } | |
754 | ||
755 | if (resp->result == cpu_to_le16(0x0004)) { | |
756 | /* 0x0004 means -EAGAIN. Drop the response, let it time out | |
757 | and be resubmitted */ | |
758 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
759 | ret = -1; | |
760 | goto done; | |
761 | } | |
762 | ||
763 | /* Now we got response from FW, cancel the command timer */ | |
764 | del_timer(&priv->command_timer); | |
765 | priv->cmd_timed_out = 0; | |
766 | if (priv->nr_retries) | |
767 | priv->nr_retries = 0; | |
768 | ||
769 | /* If the command is not successful, cleanup and return failure */ | |
770 | if ((result != 0 || !(respcmd & 0x8000))) { | |
771 | /* | |
772 | * Handling errors here | |
773 | */ | |
774 | switch (respcmd) { | |
775 | case CMD_RET(CMD_GET_HW_SPEC): | |
776 | case CMD_RET(CMD_802_11_RESET): | |
e9bd5bcd | 777 | pr_info("libertastf: reset failed\n"); |
691cdb49 LCC |
778 | break; |
779 | ||
780 | } | |
781 | lbtf_complete_command(priv, priv->cur_cmd, result); | |
782 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
783 | ||
784 | ret = -1; | |
785 | goto done; | |
786 | } | |
787 | ||
788 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
789 | ||
790 | if (priv->cur_cmd && priv->cur_cmd->callback) { | |
791 | ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg, | |
792 | resp); | |
793 | } | |
794 | spin_lock_irqsave(&priv->driver_lock, flags); | |
795 | ||
796 | if (priv->cur_cmd) { | |
797 | /* Clean up and Put current command back to cmdfreeq */ | |
798 | lbtf_complete_command(priv, priv->cur_cmd, result); | |
799 | } | |
800 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
801 | ||
802 | done: | |
803 | mutex_unlock(&priv->lock); | |
e9bd5bcd | 804 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
691cdb49 LCC |
805 | return ret; |
806 | } |