Commit | Line | Data |
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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 | 13 | #include <linux/slab.h> |
ee40fa06 | 14 | #include <linux/export.h> |
5a0e3ad6 | 15 | |
691cdb49 LCC |
16 | #include "libertas_tf.h" |
17 | ||
18 | static const struct channel_range channel_ranges[] = { | |
19 | { LBTF_REGDOMAIN_US, 1, 12 }, | |
20 | { LBTF_REGDOMAIN_CA, 1, 12 }, | |
21 | { LBTF_REGDOMAIN_EU, 1, 14 }, | |
22 | { LBTF_REGDOMAIN_JP, 1, 14 }, | |
23 | { LBTF_REGDOMAIN_SP, 1, 14 }, | |
24 | { LBTF_REGDOMAIN_FR, 1, 14 }, | |
25 | }; | |
26 | ||
27 | static u16 lbtf_region_code_to_index[MRVDRV_MAX_REGION_CODE] = | |
28 | { | |
29 | LBTF_REGDOMAIN_US, LBTF_REGDOMAIN_CA, LBTF_REGDOMAIN_EU, | |
30 | LBTF_REGDOMAIN_SP, LBTF_REGDOMAIN_FR, LBTF_REGDOMAIN_JP, | |
31 | }; | |
32 | ||
33 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv); | |
34 | ||
35 | ||
36 | /** | |
37 | * lbtf_cmd_copyback - Simple callback that copies response back into command | |
38 | * | |
39 | * @priv A pointer to struct lbtf_private structure | |
40 | * @extra A pointer to the original command structure for which | |
41 | * 'resp' is a response | |
42 | * @resp A pointer to the command response | |
43 | * | |
44 | * Returns: 0 on success, error on failure | |
45 | */ | |
46 | int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra, | |
47 | struct cmd_header *resp) | |
48 | { | |
49 | struct cmd_header *buf = (void *)extra; | |
50 | uint16_t copy_len; | |
51 | ||
52 | copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size)); | |
53 | memcpy(buf, resp, copy_len); | |
54 | return 0; | |
55 | } | |
56 | EXPORT_SYMBOL_GPL(lbtf_cmd_copyback); | |
57 | ||
58 | #define CHAN_TO_IDX(chan) ((chan) - 1) | |
59 | ||
60 | static void lbtf_geo_init(struct lbtf_private *priv) | |
61 | { | |
62 | const struct channel_range *range = channel_ranges; | |
63 | u8 ch; | |
64 | int i; | |
65 | ||
66 | for (i = 0; i < ARRAY_SIZE(channel_ranges); i++) | |
67 | if (channel_ranges[i].regdomain == priv->regioncode) { | |
68 | range = &channel_ranges[i]; | |
69 | break; | |
70 | } | |
71 | ||
72 | for (ch = priv->range.start; ch < priv->range.end; ch++) | |
73 | priv->channels[CHAN_TO_IDX(ch)].flags = 0; | |
74 | } | |
75 | ||
76 | /** | |
77 | * lbtf_update_hw_spec: Updates the hardware details. | |
78 | * | |
79 | * @priv A pointer to struct lbtf_private structure | |
80 | * | |
81 | * Returns: 0 on success, error on failure | |
82 | */ | |
83 | int lbtf_update_hw_spec(struct lbtf_private *priv) | |
84 | { | |
85 | struct cmd_ds_get_hw_spec cmd; | |
86 | int ret = -1; | |
87 | u32 i; | |
691cdb49 | 88 | |
e9bd5bcd S |
89 | lbtf_deb_enter(LBTF_DEB_CMD); |
90 | ||
691cdb49 LCC |
91 | memset(&cmd, 0, sizeof(cmd)); |
92 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
93 | memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN); | |
94 | ret = lbtf_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd); | |
95 | if (ret) | |
96 | goto out; | |
97 | ||
98 | priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo); | |
99 | ||
100 | /* The firmware release is in an interesting format: the patch | |
101 | * level is in the most significant nibble ... so fix that: */ | |
102 | priv->fwrelease = le32_to_cpu(cmd.fwrelease); | |
103 | priv->fwrelease = (priv->fwrelease << 8) | | |
104 | (priv->fwrelease >> 24 & 0xff); | |
105 | ||
e174961c JB |
106 | printk(KERN_INFO "libertastf: %pM, fw %u.%u.%up%u, cap 0x%08x\n", |
107 | cmd.permanentaddr, | |
691cdb49 LCC |
108 | priv->fwrelease >> 24 & 0xff, |
109 | priv->fwrelease >> 16 & 0xff, | |
110 | priv->fwrelease >> 8 & 0xff, | |
111 | priv->fwrelease & 0xff, | |
112 | priv->fwcapinfo); | |
e9bd5bcd S |
113 | lbtf_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n", |
114 | cmd.hwifversion, cmd.version); | |
691cdb49 LCC |
115 | |
116 | /* Clamp region code to 8-bit since FW spec indicates that it should | |
117 | * only ever be 8-bit, even though the field size is 16-bit. Some | |
118 | * firmware returns non-zero high 8 bits here. | |
119 | */ | |
120 | priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF; | |
121 | ||
122 | for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) { | |
123 | /* use the region code to search for the index */ | |
124 | if (priv->regioncode == lbtf_region_code_to_index[i]) | |
125 | break; | |
126 | } | |
127 | ||
128 | /* if it's unidentified region code, use the default (USA) */ | |
e9bd5bcd | 129 | if (i >= MRVDRV_MAX_REGION_CODE) { |
691cdb49 | 130 | priv->regioncode = 0x10; |
e9bd5bcd S |
131 | pr_info("unidentified region code; using the default (USA)\n"); |
132 | } | |
691cdb49 LCC |
133 | |
134 | if (priv->current_addr[0] == 0xff) | |
135 | memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN); | |
136 | ||
137 | SET_IEEE80211_PERM_ADDR(priv->hw, priv->current_addr); | |
138 | ||
139 | lbtf_geo_init(priv); | |
140 | out: | |
e9bd5bcd | 141 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
142 | return ret; |
143 | } | |
144 | ||
145 | /** | |
146 | * lbtf_set_channel: Set the radio channel | |
147 | * | |
148 | * @priv A pointer to struct lbtf_private structure | |
149 | * @channel The desired channel, or 0 to clear a locked channel | |
150 | * | |
151 | * Returns: 0 on success, error on failure | |
152 | */ | |
153 | int lbtf_set_channel(struct lbtf_private *priv, u8 channel) | |
154 | { | |
e9bd5bcd | 155 | int ret = 0; |
691cdb49 LCC |
156 | struct cmd_ds_802_11_rf_channel cmd; |
157 | ||
e9bd5bcd S |
158 | lbtf_deb_enter(LBTF_DEB_CMD); |
159 | ||
691cdb49 LCC |
160 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
161 | cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET); | |
162 | cmd.channel = cpu_to_le16(channel); | |
163 | ||
e9bd5bcd S |
164 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd); |
165 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); | |
166 | return ret; | |
691cdb49 LCC |
167 | } |
168 | ||
169 | int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon) | |
170 | { | |
171 | struct cmd_ds_802_11_beacon_set cmd; | |
172 | int size; | |
173 | ||
e9bd5bcd S |
174 | lbtf_deb_enter(LBTF_DEB_CMD); |
175 | ||
176 | if (beacon->len > MRVL_MAX_BCN_SIZE) { | |
177 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", -1); | |
691cdb49 | 178 | return -1; |
e9bd5bcd | 179 | } |
691cdb49 LCC |
180 | size = sizeof(cmd) - sizeof(cmd.beacon) + beacon->len; |
181 | cmd.hdr.size = cpu_to_le16(size); | |
182 | cmd.len = cpu_to_le16(beacon->len); | |
183 | memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len); | |
184 | ||
185 | lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size); | |
e9bd5bcd S |
186 | |
187 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", 0); | |
691cdb49 LCC |
188 | return 0; |
189 | } | |
190 | ||
191 | int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable, | |
e9bd5bcd S |
192 | int beacon_int) |
193 | { | |
691cdb49 | 194 | struct cmd_ds_802_11_beacon_control cmd; |
e9bd5bcd | 195 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
196 | |
197 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
198 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
199 | cmd.beacon_enable = cpu_to_le16(beacon_enable); | |
200 | cmd.beacon_period = cpu_to_le16(beacon_int); | |
201 | ||
202 | lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
203 | |
204 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
205 | return 0; |
206 | } | |
207 | ||
208 | static void lbtf_queue_cmd(struct lbtf_private *priv, | |
209 | struct cmd_ctrl_node *cmdnode) | |
210 | { | |
211 | unsigned long flags; | |
e9bd5bcd | 212 | lbtf_deb_enter(LBTF_DEB_HOST); |
691cdb49 | 213 | |
e9bd5bcd S |
214 | if (!cmdnode) { |
215 | lbtf_deb_host("QUEUE_CMD: cmdnode is NULL\n"); | |
216 | goto qcmd_done; | |
217 | } | |
691cdb49 | 218 | |
e9bd5bcd S |
219 | if (!cmdnode->cmdbuf->size) { |
220 | lbtf_deb_host("DNLD_CMD: cmd size is zero\n"); | |
221 | goto qcmd_done; | |
222 | } | |
691cdb49 LCC |
223 | |
224 | cmdnode->result = 0; | |
225 | spin_lock_irqsave(&priv->driver_lock, flags); | |
226 | list_add_tail(&cmdnode->list, &priv->cmdpendingq); | |
227 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
e9bd5bcd S |
228 | |
229 | lbtf_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n", | |
230 | le16_to_cpu(cmdnode->cmdbuf->command)); | |
231 | ||
232 | qcmd_done: | |
233 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
234 | } |
235 | ||
236 | static void lbtf_submit_command(struct lbtf_private *priv, | |
237 | struct cmd_ctrl_node *cmdnode) | |
238 | { | |
239 | unsigned long flags; | |
240 | struct cmd_header *cmd; | |
241 | uint16_t cmdsize; | |
242 | uint16_t command; | |
243 | int timeo = 5 * HZ; | |
244 | int ret; | |
245 | ||
e9bd5bcd S |
246 | lbtf_deb_enter(LBTF_DEB_HOST); |
247 | ||
691cdb49 LCC |
248 | cmd = cmdnode->cmdbuf; |
249 | ||
250 | spin_lock_irqsave(&priv->driver_lock, flags); | |
251 | priv->cur_cmd = cmdnode; | |
252 | cmdsize = le16_to_cpu(cmd->size); | |
253 | command = le16_to_cpu(cmd->command); | |
e9bd5bcd S |
254 | |
255 | lbtf_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n", | |
256 | command, le16_to_cpu(cmd->seqnum), cmdsize); | |
257 | lbtf_deb_hex(LBTF_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize); | |
258 | ||
691cdb49 LCC |
259 | ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize); |
260 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
261 | ||
e9bd5bcd S |
262 | if (ret) { |
263 | pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret); | |
691cdb49 LCC |
264 | /* Let the timer kick in and retry, and potentially reset |
265 | the whole thing if the condition persists */ | |
266 | timeo = HZ; | |
e9bd5bcd | 267 | } |
691cdb49 LCC |
268 | |
269 | /* Setup the timer after transmit command */ | |
270 | mod_timer(&priv->command_timer, jiffies + timeo); | |
e9bd5bcd S |
271 | |
272 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
273 | } |
274 | ||
275 | /** | |
276 | * This function inserts command node to cmdfreeq | |
277 | * after cleans it. Requires priv->driver_lock held. | |
278 | */ | |
279 | static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, | |
280 | struct cmd_ctrl_node *cmdnode) | |
281 | { | |
e9bd5bcd S |
282 | lbtf_deb_enter(LBTF_DEB_HOST); |
283 | ||
691cdb49 | 284 | if (!cmdnode) |
e9bd5bcd | 285 | goto cl_ins_out; |
691cdb49 LCC |
286 | |
287 | cmdnode->callback = NULL; | |
288 | cmdnode->callback_arg = 0; | |
289 | ||
290 | memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE); | |
291 | ||
292 | list_add_tail(&cmdnode->list, &priv->cmdfreeq); | |
e9bd5bcd S |
293 | |
294 | cl_ins_out: | |
295 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
296 | } |
297 | ||
298 | static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, | |
299 | struct cmd_ctrl_node *ptempcmd) | |
300 | { | |
301 | unsigned long flags; | |
302 | ||
303 | spin_lock_irqsave(&priv->driver_lock, flags); | |
304 | __lbtf_cleanup_and_insert_cmd(priv, ptempcmd); | |
305 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
306 | } | |
307 | ||
308 | void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd, | |
309 | int result) | |
310 | { | |
311 | cmd->result = result; | |
312 | cmd->cmdwaitqwoken = 1; | |
313 | wake_up_interruptible(&cmd->cmdwait_q); | |
314 | ||
315 | if (!cmd->callback) | |
316 | __lbtf_cleanup_and_insert_cmd(priv, cmd); | |
317 | priv->cur_cmd = NULL; | |
318 | } | |
319 | ||
320 | int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv) | |
321 | { | |
322 | struct cmd_ds_mac_multicast_addr cmd; | |
323 | ||
e9bd5bcd S |
324 | lbtf_deb_enter(LBTF_DEB_CMD); |
325 | ||
691cdb49 LCC |
326 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
327 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
328 | ||
329 | cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr); | |
e9bd5bcd S |
330 | |
331 | lbtf_deb_cmd("MULTICAST_ADR: setting %d addresses\n", cmd.nr_of_adrs); | |
332 | ||
691cdb49 LCC |
333 | memcpy(cmd.maclist, priv->multicastlist, |
334 | priv->nr_of_multicastmacaddr * ETH_ALEN); | |
335 | ||
336 | lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
337 | |
338 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
339 | return 0; |
340 | } | |
341 | ||
342 | void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode) | |
343 | { | |
344 | struct cmd_ds_set_mode cmd; | |
e9bd5bcd | 345 | lbtf_deb_enter(LBTF_DEB_WEXT); |
691cdb49 LCC |
346 | |
347 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
348 | cmd.mode = cpu_to_le16(mode); | |
e9bd5bcd | 349 | lbtf_deb_wext("Switching to mode: 0x%x\n", mode); |
691cdb49 | 350 | lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd)); |
e9bd5bcd S |
351 | |
352 | lbtf_deb_leave(LBTF_DEB_WEXT); | |
691cdb49 LCC |
353 | } |
354 | ||
5f936f11 | 355 | void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid) |
691cdb49 LCC |
356 | { |
357 | struct cmd_ds_set_bssid cmd; | |
e9bd5bcd | 358 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
359 | |
360 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
361 | cmd.activate = activate ? 1 : 0; | |
362 | if (activate) | |
363 | memcpy(cmd.bssid, bssid, ETH_ALEN); | |
364 | ||
365 | lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd | 366 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
367 | } |
368 | ||
369 | int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr) | |
370 | { | |
371 | struct cmd_ds_802_11_mac_address cmd; | |
e9bd5bcd | 372 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
373 | |
374 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
375 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
376 | ||
377 | memcpy(cmd.macadd, mac_addr, ETH_ALEN); | |
378 | ||
379 | lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd | 380 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
381 | return 0; |
382 | } | |
383 | ||
384 | int lbtf_set_radio_control(struct lbtf_private *priv) | |
385 | { | |
386 | int ret = 0; | |
387 | struct cmd_ds_802_11_radio_control cmd; | |
388 | ||
e9bd5bcd S |
389 | lbtf_deb_enter(LBTF_DEB_CMD); |
390 | ||
691cdb49 LCC |
391 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
392 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
393 | ||
394 | switch (priv->preamble) { | |
395 | case CMD_TYPE_SHORT_PREAMBLE: | |
396 | cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE); | |
397 | break; | |
398 | ||
399 | case CMD_TYPE_LONG_PREAMBLE: | |
400 | cmd.control = cpu_to_le16(SET_LONG_PREAMBLE); | |
401 | break; | |
402 | ||
403 | case CMD_TYPE_AUTO_PREAMBLE: | |
404 | default: | |
405 | cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE); | |
406 | break; | |
407 | } | |
408 | ||
409 | if (priv->radioon) | |
410 | cmd.control |= cpu_to_le16(TURN_ON_RF); | |
411 | else | |
412 | cmd.control &= cpu_to_le16(~TURN_ON_RF); | |
413 | ||
e9bd5bcd S |
414 | lbtf_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon, |
415 | priv->preamble); | |
416 | ||
691cdb49 | 417 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd); |
e9bd5bcd S |
418 | |
419 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); | |
691cdb49 LCC |
420 | return ret; |
421 | } | |
422 | ||
423 | void lbtf_set_mac_control(struct lbtf_private *priv) | |
424 | { | |
425 | struct cmd_ds_mac_control cmd; | |
e9bd5bcd S |
426 | lbtf_deb_enter(LBTF_DEB_CMD); |
427 | ||
691cdb49 LCC |
428 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
429 | cmd.action = cpu_to_le16(priv->mac_control); | |
430 | cmd.reserved = 0; | |
431 | ||
432 | lbtf_cmd_async(priv, CMD_MAC_CONTROL, | |
433 | &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
434 | |
435 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
436 | } |
437 | ||
438 | /** | |
439 | * lbtf_allocate_cmd_buffer - Allocates cmd buffer, links it to free cmd queue | |
440 | * | |
441 | * @priv A pointer to struct lbtf_private structure | |
442 | * | |
443 | * Returns: 0 on success. | |
444 | */ | |
445 | int lbtf_allocate_cmd_buffer(struct lbtf_private *priv) | |
446 | { | |
e9bd5bcd | 447 | int ret = 0; |
691cdb49 LCC |
448 | u32 bufsize; |
449 | u32 i; | |
450 | struct cmd_ctrl_node *cmdarray; | |
451 | ||
e9bd5bcd S |
452 | lbtf_deb_enter(LBTF_DEB_HOST); |
453 | ||
691cdb49 LCC |
454 | /* Allocate and initialize the command array */ |
455 | bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS; | |
456 | cmdarray = kzalloc(bufsize, GFP_KERNEL); | |
e9bd5bcd S |
457 | if (!cmdarray) { |
458 | lbtf_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n"); | |
459 | ret = -1; | |
460 | goto done; | |
461 | } | |
691cdb49 LCC |
462 | priv->cmd_array = cmdarray; |
463 | ||
464 | /* Allocate and initialize each command buffer in the command array */ | |
465 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
466 | cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL); | |
e9bd5bcd S |
467 | if (!cmdarray[i].cmdbuf) { |
468 | lbtf_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n"); | |
469 | ret = -1; | |
470 | goto done; | |
471 | } | |
691cdb49 LCC |
472 | } |
473 | ||
474 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
475 | init_waitqueue_head(&cmdarray[i].cmdwait_q); | |
476 | lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]); | |
477 | } | |
e9bd5bcd S |
478 | |
479 | ret = 0; | |
480 | ||
481 | done: | |
482 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); | |
483 | return ret; | |
691cdb49 LCC |
484 | } |
485 | ||
486 | /** | |
487 | * lbtf_free_cmd_buffer - Frees the cmd buffer. | |
488 | * | |
489 | * @priv A pointer to struct lbtf_private structure | |
490 | * | |
491 | * Returns: 0 | |
492 | */ | |
493 | int lbtf_free_cmd_buffer(struct lbtf_private *priv) | |
494 | { | |
495 | struct cmd_ctrl_node *cmdarray; | |
496 | unsigned int i; | |
497 | ||
e9bd5bcd S |
498 | lbtf_deb_enter(LBTF_DEB_HOST); |
499 | ||
691cdb49 | 500 | /* need to check if cmd array is allocated or not */ |
e9bd5bcd S |
501 | if (priv->cmd_array == NULL) { |
502 | lbtf_deb_host("FREE_CMD_BUF: cmd_array is NULL\n"); | |
503 | goto done; | |
504 | } | |
691cdb49 LCC |
505 | |
506 | cmdarray = priv->cmd_array; | |
507 | ||
508 | /* Release shared memory buffers */ | |
509 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
510 | kfree(cmdarray[i].cmdbuf); | |
511 | cmdarray[i].cmdbuf = NULL; | |
512 | } | |
513 | ||
514 | /* Release cmd_ctrl_node */ | |
515 | kfree(priv->cmd_array); | |
516 | priv->cmd_array = NULL; | |
517 | ||
e9bd5bcd S |
518 | done: |
519 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
520 | return 0; |
521 | } | |
522 | ||
523 | /** | |
524 | * lbtf_get_cmd_ctrl_node - Gets free cmd node from free cmd queue. | |
525 | * | |
526 | * @priv A pointer to struct lbtf_private structure | |
527 | * | |
528 | * Returns: pointer to a struct cmd_ctrl_node or NULL if none available. | |
529 | */ | |
530 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv) | |
531 | { | |
532 | struct cmd_ctrl_node *tempnode; | |
533 | unsigned long flags; | |
534 | ||
e9bd5bcd S |
535 | lbtf_deb_enter(LBTF_DEB_HOST); |
536 | ||
691cdb49 LCC |
537 | if (!priv) |
538 | return NULL; | |
539 | ||
540 | spin_lock_irqsave(&priv->driver_lock, flags); | |
541 | ||
542 | if (!list_empty(&priv->cmdfreeq)) { | |
543 | tempnode = list_first_entry(&priv->cmdfreeq, | |
544 | struct cmd_ctrl_node, list); | |
545 | list_del(&tempnode->list); | |
e9bd5bcd S |
546 | } else { |
547 | lbtf_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n"); | |
691cdb49 | 548 | tempnode = NULL; |
e9bd5bcd | 549 | } |
691cdb49 LCC |
550 | |
551 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
552 | ||
e9bd5bcd | 553 | lbtf_deb_leave(LBTF_DEB_HOST); |
691cdb49 LCC |
554 | return tempnode; |
555 | } | |
556 | ||
557 | /** | |
558 | * lbtf_execute_next_command: execute next command in cmd pending queue. | |
559 | * | |
560 | * @priv A pointer to struct lbtf_private structure | |
561 | * | |
562 | * Returns: 0 on success. | |
563 | */ | |
564 | int lbtf_execute_next_command(struct lbtf_private *priv) | |
565 | { | |
566 | struct cmd_ctrl_node *cmdnode = NULL; | |
567 | struct cmd_header *cmd; | |
568 | unsigned long flags; | |
e9bd5bcd | 569 | int ret = 0; |
691cdb49 | 570 | |
e9bd5bcd | 571 | /* Debug group is lbtf_deb_THREAD and not lbtf_deb_HOST, because the |
691cdb49 LCC |
572 | * only caller to us is lbtf_thread() and we get even when a |
573 | * data packet is received */ | |
e9bd5bcd | 574 | lbtf_deb_enter(LBTF_DEB_THREAD); |
691cdb49 LCC |
575 | |
576 | spin_lock_irqsave(&priv->driver_lock, flags); | |
577 | ||
578 | if (priv->cur_cmd) { | |
e9bd5bcd | 579 | pr_alert("EXEC_NEXT_CMD: already processing command!\n"); |
691cdb49 | 580 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
e9bd5bcd S |
581 | ret = -1; |
582 | goto done; | |
691cdb49 LCC |
583 | } |
584 | ||
585 | if (!list_empty(&priv->cmdpendingq)) { | |
586 | cmdnode = list_first_entry(&priv->cmdpendingq, | |
587 | struct cmd_ctrl_node, list); | |
588 | } | |
589 | ||
590 | if (cmdnode) { | |
591 | cmd = cmdnode->cmdbuf; | |
592 | ||
593 | list_del(&cmdnode->list); | |
e9bd5bcd S |
594 | lbtf_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n", |
595 | le16_to_cpu(cmd->command)); | |
691cdb49 LCC |
596 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
597 | lbtf_submit_command(priv, cmdnode); | |
598 | } else | |
599 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
e9bd5bcd S |
600 | |
601 | ret = 0; | |
602 | done: | |
603 | lbtf_deb_leave(LBTF_DEB_THREAD); | |
604 | return ret; | |
691cdb49 LCC |
605 | } |
606 | ||
607 | static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv, | |
608 | uint16_t command, struct cmd_header *in_cmd, int in_cmd_size, | |
609 | int (*callback)(struct lbtf_private *, unsigned long, | |
610 | struct cmd_header *), | |
611 | unsigned long callback_arg) | |
612 | { | |
613 | struct cmd_ctrl_node *cmdnode; | |
614 | ||
e9bd5bcd S |
615 | lbtf_deb_enter(LBTF_DEB_HOST); |
616 | ||
617 | if (priv->surpriseremoved) { | |
618 | lbtf_deb_host("PREP_CMD: card removed\n"); | |
619 | cmdnode = ERR_PTR(-ENOENT); | |
620 | goto done; | |
621 | } | |
691cdb49 LCC |
622 | |
623 | cmdnode = lbtf_get_cmd_ctrl_node(priv); | |
624 | if (cmdnode == NULL) { | |
e9bd5bcd S |
625 | lbtf_deb_host("PREP_CMD: cmdnode is NULL\n"); |
626 | ||
691cdb49 LCC |
627 | /* Wake up main thread to execute next command */ |
628 | queue_work(lbtf_wq, &priv->cmd_work); | |
e9bd5bcd S |
629 | cmdnode = ERR_PTR(-ENOBUFS); |
630 | goto done; | |
691cdb49 LCC |
631 | } |
632 | ||
633 | cmdnode->callback = callback; | |
634 | cmdnode->callback_arg = callback_arg; | |
635 | ||
636 | /* Copy the incoming command to the buffer */ | |
637 | memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size); | |
638 | ||
639 | /* Set sequence number, clean result, move to buffer */ | |
640 | priv->seqnum++; | |
641 | cmdnode->cmdbuf->command = cpu_to_le16(command); | |
642 | cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size); | |
643 | cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum); | |
644 | cmdnode->cmdbuf->result = 0; | |
e9bd5bcd S |
645 | |
646 | lbtf_deb_host("PREP_CMD: command 0x%04x\n", command); | |
647 | ||
691cdb49 LCC |
648 | cmdnode->cmdwaitqwoken = 0; |
649 | lbtf_queue_cmd(priv, cmdnode); | |
650 | queue_work(lbtf_wq, &priv->cmd_work); | |
651 | ||
e9bd5bcd S |
652 | done: |
653 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode); | |
691cdb49 LCC |
654 | return cmdnode; |
655 | } | |
656 | ||
657 | void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command, | |
658 | struct cmd_header *in_cmd, int in_cmd_size) | |
659 | { | |
e9bd5bcd | 660 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 | 661 | __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0); |
e9bd5bcd | 662 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
663 | } |
664 | ||
665 | int __lbtf_cmd(struct lbtf_private *priv, uint16_t command, | |
666 | struct cmd_header *in_cmd, int in_cmd_size, | |
667 | int (*callback)(struct lbtf_private *, | |
668 | unsigned long, struct cmd_header *), | |
669 | unsigned long callback_arg) | |
670 | { | |
671 | struct cmd_ctrl_node *cmdnode; | |
672 | unsigned long flags; | |
673 | int ret = 0; | |
674 | ||
e9bd5bcd S |
675 | lbtf_deb_enter(LBTF_DEB_HOST); |
676 | ||
691cdb49 LCC |
677 | cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, |
678 | callback, callback_arg); | |
e9bd5bcd S |
679 | if (IS_ERR(cmdnode)) { |
680 | ret = PTR_ERR(cmdnode); | |
681 | goto done; | |
682 | } | |
691cdb49 LCC |
683 | |
684 | might_sleep(); | |
685 | ret = wait_event_interruptible(cmdnode->cmdwait_q, | |
686 | cmdnode->cmdwaitqwoken); | |
e9bd5bcd S |
687 | if (ret) { |
688 | pr_info("PREP_CMD: command 0x%04x interrupted by signal: %d\n", | |
689 | command, ret); | |
690 | goto done; | |
691cdb49 LCC |
691 | } |
692 | ||
693 | spin_lock_irqsave(&priv->driver_lock, flags); | |
694 | ret = cmdnode->result; | |
695 | if (ret) | |
e9bd5bcd | 696 | pr_info("PREP_CMD: command 0x%04x failed: %d\n", |
691cdb49 LCC |
697 | command, ret); |
698 | ||
699 | __lbtf_cleanup_and_insert_cmd(priv, cmdnode); | |
700 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
701 | ||
e9bd5bcd S |
702 | done: |
703 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); | |
691cdb49 LCC |
704 | return ret; |
705 | } | |
706 | EXPORT_SYMBOL_GPL(__lbtf_cmd); | |
707 | ||
708 | /* Call holding driver_lock */ | |
709 | void lbtf_cmd_response_rx(struct lbtf_private *priv) | |
710 | { | |
711 | priv->cmd_response_rxed = 1; | |
712 | queue_work(lbtf_wq, &priv->cmd_work); | |
713 | } | |
714 | EXPORT_SYMBOL_GPL(lbtf_cmd_response_rx); | |
715 | ||
716 | int lbtf_process_rx_command(struct lbtf_private *priv) | |
717 | { | |
718 | uint16_t respcmd, curcmd; | |
719 | struct cmd_header *resp; | |
720 | int ret = 0; | |
721 | unsigned long flags; | |
722 | uint16_t result; | |
723 | ||
e9bd5bcd S |
724 | lbtf_deb_enter(LBTF_DEB_CMD); |
725 | ||
691cdb49 LCC |
726 | mutex_lock(&priv->lock); |
727 | spin_lock_irqsave(&priv->driver_lock, flags); | |
728 | ||
729 | if (!priv->cur_cmd) { | |
730 | ret = -1; | |
731 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
732 | goto done; | |
733 | } | |
734 | ||
735 | resp = (void *)priv->cmd_resp_buff; | |
736 | curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command); | |
737 | respcmd = le16_to_cpu(resp->command); | |
738 | result = le16_to_cpu(resp->result); | |
739 | ||
740 | if (net_ratelimit()) | |
e9bd5bcd | 741 | pr_info("libertastf: cmd response 0x%04x, seq %d, size %d\n", |
691cdb49 LCC |
742 | respcmd, le16_to_cpu(resp->seqnum), |
743 | le16_to_cpu(resp->size)); | |
744 | ||
745 | if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) { | |
746 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
747 | ret = -1; | |
748 | goto done; | |
749 | } | |
750 | if (respcmd != CMD_RET(curcmd)) { | |
751 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
752 | ret = -1; | |
753 | goto done; | |
754 | } | |
755 | ||
756 | if (resp->result == cpu_to_le16(0x0004)) { | |
757 | /* 0x0004 means -EAGAIN. Drop the response, let it time out | |
758 | and be resubmitted */ | |
759 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
760 | ret = -1; | |
761 | goto done; | |
762 | } | |
763 | ||
764 | /* Now we got response from FW, cancel the command timer */ | |
765 | del_timer(&priv->command_timer); | |
766 | priv->cmd_timed_out = 0; | |
767 | if (priv->nr_retries) | |
768 | priv->nr_retries = 0; | |
769 | ||
770 | /* If the command is not successful, cleanup and return failure */ | |
771 | if ((result != 0 || !(respcmd & 0x8000))) { | |
772 | /* | |
773 | * Handling errors here | |
774 | */ | |
775 | switch (respcmd) { | |
776 | case CMD_RET(CMD_GET_HW_SPEC): | |
777 | case CMD_RET(CMD_802_11_RESET): | |
e9bd5bcd | 778 | pr_info("libertastf: reset failed\n"); |
691cdb49 LCC |
779 | break; |
780 | ||
781 | } | |
782 | lbtf_complete_command(priv, priv->cur_cmd, result); | |
783 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
784 | ||
785 | ret = -1; | |
786 | goto done; | |
787 | } | |
788 | ||
789 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
790 | ||
791 | if (priv->cur_cmd && priv->cur_cmd->callback) { | |
792 | ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg, | |
793 | resp); | |
794 | } | |
795 | spin_lock_irqsave(&priv->driver_lock, flags); | |
796 | ||
797 | if (priv->cur_cmd) { | |
798 | /* Clean up and Put current command back to cmdfreeq */ | |
799 | lbtf_complete_command(priv, priv->cur_cmd, result); | |
800 | } | |
801 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
802 | ||
803 | done: | |
804 | mutex_unlock(&priv->lock); | |
e9bd5bcd | 805 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
691cdb49 LCC |
806 | return ret; |
807 | } |