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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
691cdb49 LCC |
2 | /* |
3 | * Copyright (C) 2008, cozybit Inc. | |
4 | * Copyright (C) 2003-2006, Marvell International Ltd. | |
691cdb49 | 5 | */ |
edfcba15 JL |
6 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
7 | ||
a6b7a407 | 8 | #include <linux/hardirq.h> |
5a0e3ad6 | 9 | #include <linux/slab.h> |
ee40fa06 | 10 | #include <linux/export.h> |
5a0e3ad6 | 11 | |
691cdb49 LCC |
12 | #include "libertas_tf.h" |
13 | ||
14 | static const struct channel_range channel_ranges[] = { | |
15 | { LBTF_REGDOMAIN_US, 1, 12 }, | |
16 | { LBTF_REGDOMAIN_CA, 1, 12 }, | |
17 | { LBTF_REGDOMAIN_EU, 1, 14 }, | |
18 | { LBTF_REGDOMAIN_JP, 1, 14 }, | |
19 | { LBTF_REGDOMAIN_SP, 1, 14 }, | |
20 | { LBTF_REGDOMAIN_FR, 1, 14 }, | |
21 | }; | |
22 | ||
23 | static u16 lbtf_region_code_to_index[MRVDRV_MAX_REGION_CODE] = | |
24 | { | |
25 | LBTF_REGDOMAIN_US, LBTF_REGDOMAIN_CA, LBTF_REGDOMAIN_EU, | |
26 | LBTF_REGDOMAIN_SP, LBTF_REGDOMAIN_FR, LBTF_REGDOMAIN_JP, | |
27 | }; | |
28 | ||
29 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv); | |
30 | ||
31 | ||
32 | /** | |
33 | * lbtf_cmd_copyback - Simple callback that copies response back into command | |
34 | * | |
35 | * @priv A pointer to struct lbtf_private structure | |
36 | * @extra A pointer to the original command structure for which | |
37 | * 'resp' is a response | |
38 | * @resp A pointer to the command response | |
39 | * | |
40 | * Returns: 0 on success, error on failure | |
41 | */ | |
42 | int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra, | |
43 | struct cmd_header *resp) | |
44 | { | |
45 | struct cmd_header *buf = (void *)extra; | |
46 | uint16_t copy_len; | |
47 | ||
48 | copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size)); | |
49 | memcpy(buf, resp, copy_len); | |
50 | return 0; | |
51 | } | |
52 | EXPORT_SYMBOL_GPL(lbtf_cmd_copyback); | |
53 | ||
54 | #define CHAN_TO_IDX(chan) ((chan) - 1) | |
55 | ||
56 | static void lbtf_geo_init(struct lbtf_private *priv) | |
57 | { | |
58 | const struct channel_range *range = channel_ranges; | |
59 | u8 ch; | |
60 | int i; | |
61 | ||
62 | for (i = 0; i < ARRAY_SIZE(channel_ranges); i++) | |
63 | if (channel_ranges[i].regdomain == priv->regioncode) { | |
64 | range = &channel_ranges[i]; | |
65 | break; | |
66 | } | |
67 | ||
68 | for (ch = priv->range.start; ch < priv->range.end; ch++) | |
69 | priv->channels[CHAN_TO_IDX(ch)].flags = 0; | |
70 | } | |
71 | ||
72 | /** | |
73 | * lbtf_update_hw_spec: Updates the hardware details. | |
74 | * | |
75 | * @priv A pointer to struct lbtf_private structure | |
76 | * | |
77 | * Returns: 0 on success, error on failure | |
78 | */ | |
79 | int lbtf_update_hw_spec(struct lbtf_private *priv) | |
80 | { | |
81 | struct cmd_ds_get_hw_spec cmd; | |
82 | int ret = -1; | |
83 | u32 i; | |
691cdb49 | 84 | |
e9bd5bcd S |
85 | lbtf_deb_enter(LBTF_DEB_CMD); |
86 | ||
691cdb49 LCC |
87 | memset(&cmd, 0, sizeof(cmd)); |
88 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
89 | memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN); | |
90 | ret = lbtf_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd); | |
91 | if (ret) | |
92 | goto out; | |
93 | ||
94 | priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo); | |
95 | ||
96 | /* The firmware release is in an interesting format: the patch | |
97 | * level is in the most significant nibble ... so fix that: */ | |
98 | priv->fwrelease = le32_to_cpu(cmd.fwrelease); | |
99 | priv->fwrelease = (priv->fwrelease << 8) | | |
100 | (priv->fwrelease >> 24 & 0xff); | |
101 | ||
e174961c JB |
102 | printk(KERN_INFO "libertastf: %pM, fw %u.%u.%up%u, cap 0x%08x\n", |
103 | cmd.permanentaddr, | |
691cdb49 LCC |
104 | priv->fwrelease >> 24 & 0xff, |
105 | priv->fwrelease >> 16 & 0xff, | |
106 | priv->fwrelease >> 8 & 0xff, | |
107 | priv->fwrelease & 0xff, | |
108 | priv->fwcapinfo); | |
e9bd5bcd S |
109 | lbtf_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n", |
110 | cmd.hwifversion, cmd.version); | |
691cdb49 LCC |
111 | |
112 | /* Clamp region code to 8-bit since FW spec indicates that it should | |
113 | * only ever be 8-bit, even though the field size is 16-bit. Some | |
114 | * firmware returns non-zero high 8 bits here. | |
115 | */ | |
116 | priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF; | |
117 | ||
118 | for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) { | |
119 | /* use the region code to search for the index */ | |
120 | if (priv->regioncode == lbtf_region_code_to_index[i]) | |
121 | break; | |
122 | } | |
123 | ||
124 | /* if it's unidentified region code, use the default (USA) */ | |
e9bd5bcd | 125 | if (i >= MRVDRV_MAX_REGION_CODE) { |
691cdb49 | 126 | priv->regioncode = 0x10; |
e9bd5bcd S |
127 | pr_info("unidentified region code; using the default (USA)\n"); |
128 | } | |
691cdb49 LCC |
129 | |
130 | if (priv->current_addr[0] == 0xff) | |
131 | memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN); | |
132 | ||
133 | SET_IEEE80211_PERM_ADDR(priv->hw, priv->current_addr); | |
134 | ||
135 | lbtf_geo_init(priv); | |
136 | out: | |
e9bd5bcd | 137 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
138 | return ret; |
139 | } | |
140 | ||
141 | /** | |
142 | * lbtf_set_channel: Set the radio channel | |
143 | * | |
144 | * @priv A pointer to struct lbtf_private structure | |
145 | * @channel The desired channel, or 0 to clear a locked channel | |
146 | * | |
147 | * Returns: 0 on success, error on failure | |
148 | */ | |
149 | int lbtf_set_channel(struct lbtf_private *priv, u8 channel) | |
150 | { | |
e9bd5bcd | 151 | int ret = 0; |
691cdb49 LCC |
152 | struct cmd_ds_802_11_rf_channel cmd; |
153 | ||
e9bd5bcd S |
154 | lbtf_deb_enter(LBTF_DEB_CMD); |
155 | ||
691cdb49 LCC |
156 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
157 | cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET); | |
158 | cmd.channel = cpu_to_le16(channel); | |
159 | ||
e9bd5bcd S |
160 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd); |
161 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); | |
162 | return ret; | |
691cdb49 LCC |
163 | } |
164 | ||
165 | int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon) | |
166 | { | |
167 | struct cmd_ds_802_11_beacon_set cmd; | |
168 | int size; | |
169 | ||
e9bd5bcd S |
170 | lbtf_deb_enter(LBTF_DEB_CMD); |
171 | ||
172 | if (beacon->len > MRVL_MAX_BCN_SIZE) { | |
173 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", -1); | |
691cdb49 | 174 | return -1; |
e9bd5bcd | 175 | } |
691cdb49 LCC |
176 | size = sizeof(cmd) - sizeof(cmd.beacon) + beacon->len; |
177 | cmd.hdr.size = cpu_to_le16(size); | |
178 | cmd.len = cpu_to_le16(beacon->len); | |
179 | memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len); | |
180 | ||
181 | lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size); | |
e9bd5bcd S |
182 | |
183 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", 0); | |
691cdb49 LCC |
184 | return 0; |
185 | } | |
186 | ||
187 | int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable, | |
e9bd5bcd S |
188 | int beacon_int) |
189 | { | |
691cdb49 | 190 | struct cmd_ds_802_11_beacon_control cmd; |
e9bd5bcd | 191 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
192 | |
193 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
194 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
195 | cmd.beacon_enable = cpu_to_le16(beacon_enable); | |
196 | cmd.beacon_period = cpu_to_le16(beacon_int); | |
197 | ||
198 | lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
199 | |
200 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
201 | return 0; |
202 | } | |
203 | ||
204 | static void lbtf_queue_cmd(struct lbtf_private *priv, | |
205 | struct cmd_ctrl_node *cmdnode) | |
206 | { | |
207 | unsigned long flags; | |
e9bd5bcd | 208 | lbtf_deb_enter(LBTF_DEB_HOST); |
691cdb49 | 209 | |
e9bd5bcd S |
210 | if (!cmdnode) { |
211 | lbtf_deb_host("QUEUE_CMD: cmdnode is NULL\n"); | |
212 | goto qcmd_done; | |
213 | } | |
691cdb49 | 214 | |
e9bd5bcd S |
215 | if (!cmdnode->cmdbuf->size) { |
216 | lbtf_deb_host("DNLD_CMD: cmd size is zero\n"); | |
217 | goto qcmd_done; | |
218 | } | |
691cdb49 LCC |
219 | |
220 | cmdnode->result = 0; | |
221 | spin_lock_irqsave(&priv->driver_lock, flags); | |
222 | list_add_tail(&cmdnode->list, &priv->cmdpendingq); | |
223 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
e9bd5bcd S |
224 | |
225 | lbtf_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n", | |
226 | le16_to_cpu(cmdnode->cmdbuf->command)); | |
227 | ||
228 | qcmd_done: | |
229 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
230 | } |
231 | ||
232 | static void lbtf_submit_command(struct lbtf_private *priv, | |
233 | struct cmd_ctrl_node *cmdnode) | |
234 | { | |
235 | unsigned long flags; | |
236 | struct cmd_header *cmd; | |
237 | uint16_t cmdsize; | |
238 | uint16_t command; | |
239 | int timeo = 5 * HZ; | |
240 | int ret; | |
241 | ||
e9bd5bcd S |
242 | lbtf_deb_enter(LBTF_DEB_HOST); |
243 | ||
691cdb49 LCC |
244 | cmd = cmdnode->cmdbuf; |
245 | ||
246 | spin_lock_irqsave(&priv->driver_lock, flags); | |
247 | priv->cur_cmd = cmdnode; | |
248 | cmdsize = le16_to_cpu(cmd->size); | |
249 | command = le16_to_cpu(cmd->command); | |
e9bd5bcd S |
250 | |
251 | lbtf_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n", | |
252 | command, le16_to_cpu(cmd->seqnum), cmdsize); | |
253 | lbtf_deb_hex(LBTF_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize); | |
254 | ||
be9d0d3f | 255 | ret = priv->ops->hw_host_to_card(priv, MVMS_CMD, (u8 *)cmd, cmdsize); |
691cdb49 LCC |
256 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
257 | ||
e9bd5bcd S |
258 | if (ret) { |
259 | pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret); | |
691cdb49 LCC |
260 | /* Let the timer kick in and retry, and potentially reset |
261 | the whole thing if the condition persists */ | |
262 | timeo = HZ; | |
e9bd5bcd | 263 | } |
691cdb49 LCC |
264 | |
265 | /* Setup the timer after transmit command */ | |
266 | mod_timer(&priv->command_timer, jiffies + timeo); | |
e9bd5bcd S |
267 | |
268 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
269 | } |
270 | ||
271 | /** | |
272 | * This function inserts command node to cmdfreeq | |
273 | * after cleans it. Requires priv->driver_lock held. | |
274 | */ | |
275 | static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, | |
276 | struct cmd_ctrl_node *cmdnode) | |
277 | { | |
e9bd5bcd S |
278 | lbtf_deb_enter(LBTF_DEB_HOST); |
279 | ||
691cdb49 | 280 | if (!cmdnode) |
e9bd5bcd | 281 | goto cl_ins_out; |
691cdb49 LCC |
282 | |
283 | cmdnode->callback = NULL; | |
284 | cmdnode->callback_arg = 0; | |
285 | ||
286 | memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE); | |
287 | ||
288 | list_add_tail(&cmdnode->list, &priv->cmdfreeq); | |
e9bd5bcd S |
289 | |
290 | cl_ins_out: | |
291 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
292 | } |
293 | ||
294 | static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, | |
295 | struct cmd_ctrl_node *ptempcmd) | |
296 | { | |
297 | unsigned long flags; | |
298 | ||
299 | spin_lock_irqsave(&priv->driver_lock, flags); | |
300 | __lbtf_cleanup_and_insert_cmd(priv, ptempcmd); | |
301 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
302 | } | |
303 | ||
304 | void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd, | |
305 | int result) | |
306 | { | |
307 | cmd->result = result; | |
308 | cmd->cmdwaitqwoken = 1; | |
309 | wake_up_interruptible(&cmd->cmdwait_q); | |
310 | ||
311 | if (!cmd->callback) | |
312 | __lbtf_cleanup_and_insert_cmd(priv, cmd); | |
313 | priv->cur_cmd = NULL; | |
314 | } | |
315 | ||
316 | int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv) | |
317 | { | |
318 | struct cmd_ds_mac_multicast_addr cmd; | |
319 | ||
e9bd5bcd S |
320 | lbtf_deb_enter(LBTF_DEB_CMD); |
321 | ||
691cdb49 LCC |
322 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
323 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
324 | ||
325 | cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr); | |
e9bd5bcd S |
326 | |
327 | lbtf_deb_cmd("MULTICAST_ADR: setting %d addresses\n", cmd.nr_of_adrs); | |
328 | ||
691cdb49 LCC |
329 | memcpy(cmd.maclist, priv->multicastlist, |
330 | priv->nr_of_multicastmacaddr * ETH_ALEN); | |
331 | ||
332 | lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
333 | |
334 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
335 | return 0; |
336 | } | |
337 | ||
338 | void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode) | |
339 | { | |
340 | struct cmd_ds_set_mode cmd; | |
e9bd5bcd | 341 | lbtf_deb_enter(LBTF_DEB_WEXT); |
691cdb49 LCC |
342 | |
343 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
344 | cmd.mode = cpu_to_le16(mode); | |
e9bd5bcd | 345 | lbtf_deb_wext("Switching to mode: 0x%x\n", mode); |
691cdb49 | 346 | lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd)); |
e9bd5bcd S |
347 | |
348 | lbtf_deb_leave(LBTF_DEB_WEXT); | |
691cdb49 LCC |
349 | } |
350 | ||
5f936f11 | 351 | void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid) |
691cdb49 LCC |
352 | { |
353 | struct cmd_ds_set_bssid cmd; | |
e9bd5bcd | 354 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
355 | |
356 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
357 | cmd.activate = activate ? 1 : 0; | |
358 | if (activate) | |
359 | memcpy(cmd.bssid, bssid, ETH_ALEN); | |
360 | ||
361 | lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd | 362 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
363 | } |
364 | ||
365 | int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr) | |
366 | { | |
367 | struct cmd_ds_802_11_mac_address cmd; | |
e9bd5bcd | 368 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 LCC |
369 | |
370 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); | |
371 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
372 | ||
373 | memcpy(cmd.macadd, mac_addr, ETH_ALEN); | |
374 | ||
375 | lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd | 376 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
377 | return 0; |
378 | } | |
379 | ||
380 | int lbtf_set_radio_control(struct lbtf_private *priv) | |
381 | { | |
382 | int ret = 0; | |
383 | struct cmd_ds_802_11_radio_control cmd; | |
384 | ||
e9bd5bcd S |
385 | lbtf_deb_enter(LBTF_DEB_CMD); |
386 | ||
691cdb49 LCC |
387 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
388 | cmd.action = cpu_to_le16(CMD_ACT_SET); | |
389 | ||
390 | switch (priv->preamble) { | |
391 | case CMD_TYPE_SHORT_PREAMBLE: | |
392 | cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE); | |
393 | break; | |
394 | ||
395 | case CMD_TYPE_LONG_PREAMBLE: | |
396 | cmd.control = cpu_to_le16(SET_LONG_PREAMBLE); | |
397 | break; | |
398 | ||
399 | case CMD_TYPE_AUTO_PREAMBLE: | |
400 | default: | |
401 | cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE); | |
402 | break; | |
403 | } | |
404 | ||
405 | if (priv->radioon) | |
406 | cmd.control |= cpu_to_le16(TURN_ON_RF); | |
407 | else | |
408 | cmd.control &= cpu_to_le16(~TURN_ON_RF); | |
409 | ||
e9bd5bcd S |
410 | lbtf_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon, |
411 | priv->preamble); | |
412 | ||
691cdb49 | 413 | ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd); |
e9bd5bcd S |
414 | |
415 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); | |
691cdb49 LCC |
416 | return ret; |
417 | } | |
418 | ||
419 | void lbtf_set_mac_control(struct lbtf_private *priv) | |
420 | { | |
421 | struct cmd_ds_mac_control cmd; | |
e9bd5bcd S |
422 | lbtf_deb_enter(LBTF_DEB_CMD); |
423 | ||
691cdb49 LCC |
424 | cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
425 | cmd.action = cpu_to_le16(priv->mac_control); | |
426 | cmd.reserved = 0; | |
427 | ||
428 | lbtf_cmd_async(priv, CMD_MAC_CONTROL, | |
429 | &cmd.hdr, sizeof(cmd)); | |
e9bd5bcd S |
430 | |
431 | lbtf_deb_leave(LBTF_DEB_CMD); | |
691cdb49 LCC |
432 | } |
433 | ||
434 | /** | |
435 | * lbtf_allocate_cmd_buffer - Allocates cmd buffer, links it to free cmd queue | |
436 | * | |
437 | * @priv A pointer to struct lbtf_private structure | |
438 | * | |
439 | * Returns: 0 on success. | |
440 | */ | |
441 | int lbtf_allocate_cmd_buffer(struct lbtf_private *priv) | |
442 | { | |
e9bd5bcd | 443 | int ret = 0; |
691cdb49 LCC |
444 | u32 bufsize; |
445 | u32 i; | |
446 | struct cmd_ctrl_node *cmdarray; | |
447 | ||
e9bd5bcd S |
448 | lbtf_deb_enter(LBTF_DEB_HOST); |
449 | ||
691cdb49 LCC |
450 | /* Allocate and initialize the command array */ |
451 | bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS; | |
452 | cmdarray = kzalloc(bufsize, GFP_KERNEL); | |
e9bd5bcd S |
453 | if (!cmdarray) { |
454 | lbtf_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n"); | |
455 | ret = -1; | |
456 | goto done; | |
457 | } | |
691cdb49 LCC |
458 | priv->cmd_array = cmdarray; |
459 | ||
460 | /* Allocate and initialize each command buffer in the command array */ | |
461 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
462 | cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL); | |
e9bd5bcd S |
463 | if (!cmdarray[i].cmdbuf) { |
464 | lbtf_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n"); | |
465 | ret = -1; | |
466 | goto done; | |
467 | } | |
691cdb49 LCC |
468 | } |
469 | ||
470 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
471 | init_waitqueue_head(&cmdarray[i].cmdwait_q); | |
472 | lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]); | |
473 | } | |
e9bd5bcd S |
474 | |
475 | ret = 0; | |
476 | ||
477 | done: | |
478 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); | |
479 | return ret; | |
691cdb49 LCC |
480 | } |
481 | ||
482 | /** | |
483 | * lbtf_free_cmd_buffer - Frees the cmd buffer. | |
484 | * | |
485 | * @priv A pointer to struct lbtf_private structure | |
486 | * | |
487 | * Returns: 0 | |
488 | */ | |
489 | int lbtf_free_cmd_buffer(struct lbtf_private *priv) | |
490 | { | |
491 | struct cmd_ctrl_node *cmdarray; | |
492 | unsigned int i; | |
493 | ||
e9bd5bcd S |
494 | lbtf_deb_enter(LBTF_DEB_HOST); |
495 | ||
691cdb49 | 496 | /* need to check if cmd array is allocated or not */ |
e9bd5bcd S |
497 | if (priv->cmd_array == NULL) { |
498 | lbtf_deb_host("FREE_CMD_BUF: cmd_array is NULL\n"); | |
499 | goto done; | |
500 | } | |
691cdb49 LCC |
501 | |
502 | cmdarray = priv->cmd_array; | |
503 | ||
504 | /* Release shared memory buffers */ | |
505 | for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { | |
506 | kfree(cmdarray[i].cmdbuf); | |
507 | cmdarray[i].cmdbuf = NULL; | |
508 | } | |
509 | ||
510 | /* Release cmd_ctrl_node */ | |
511 | kfree(priv->cmd_array); | |
512 | priv->cmd_array = NULL; | |
513 | ||
e9bd5bcd S |
514 | done: |
515 | lbtf_deb_leave(LBTF_DEB_HOST); | |
691cdb49 LCC |
516 | return 0; |
517 | } | |
518 | ||
519 | /** | |
520 | * lbtf_get_cmd_ctrl_node - Gets free cmd node from free cmd queue. | |
521 | * | |
522 | * @priv A pointer to struct lbtf_private structure | |
523 | * | |
524 | * Returns: pointer to a struct cmd_ctrl_node or NULL if none available. | |
525 | */ | |
526 | static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv) | |
527 | { | |
528 | struct cmd_ctrl_node *tempnode; | |
529 | unsigned long flags; | |
530 | ||
e9bd5bcd S |
531 | lbtf_deb_enter(LBTF_DEB_HOST); |
532 | ||
691cdb49 LCC |
533 | if (!priv) |
534 | return NULL; | |
535 | ||
536 | spin_lock_irqsave(&priv->driver_lock, flags); | |
537 | ||
538 | if (!list_empty(&priv->cmdfreeq)) { | |
539 | tempnode = list_first_entry(&priv->cmdfreeq, | |
540 | struct cmd_ctrl_node, list); | |
541 | list_del(&tempnode->list); | |
e9bd5bcd S |
542 | } else { |
543 | lbtf_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n"); | |
691cdb49 | 544 | tempnode = NULL; |
e9bd5bcd | 545 | } |
691cdb49 LCC |
546 | |
547 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
548 | ||
e9bd5bcd | 549 | lbtf_deb_leave(LBTF_DEB_HOST); |
691cdb49 LCC |
550 | return tempnode; |
551 | } | |
552 | ||
553 | /** | |
554 | * lbtf_execute_next_command: execute next command in cmd pending queue. | |
555 | * | |
556 | * @priv A pointer to struct lbtf_private structure | |
557 | * | |
558 | * Returns: 0 on success. | |
559 | */ | |
560 | int lbtf_execute_next_command(struct lbtf_private *priv) | |
561 | { | |
562 | struct cmd_ctrl_node *cmdnode = NULL; | |
563 | struct cmd_header *cmd; | |
564 | unsigned long flags; | |
e9bd5bcd | 565 | int ret = 0; |
691cdb49 | 566 | |
e9bd5bcd | 567 | /* Debug group is lbtf_deb_THREAD and not lbtf_deb_HOST, because the |
691cdb49 LCC |
568 | * only caller to us is lbtf_thread() and we get even when a |
569 | * data packet is received */ | |
e9bd5bcd | 570 | lbtf_deb_enter(LBTF_DEB_THREAD); |
691cdb49 LCC |
571 | |
572 | spin_lock_irqsave(&priv->driver_lock, flags); | |
573 | ||
574 | if (priv->cur_cmd) { | |
e9bd5bcd | 575 | pr_alert("EXEC_NEXT_CMD: already processing command!\n"); |
691cdb49 | 576 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
e9bd5bcd S |
577 | ret = -1; |
578 | goto done; | |
691cdb49 LCC |
579 | } |
580 | ||
581 | if (!list_empty(&priv->cmdpendingq)) { | |
582 | cmdnode = list_first_entry(&priv->cmdpendingq, | |
583 | struct cmd_ctrl_node, list); | |
584 | } | |
585 | ||
586 | if (cmdnode) { | |
587 | cmd = cmdnode->cmdbuf; | |
588 | ||
589 | list_del(&cmdnode->list); | |
e9bd5bcd S |
590 | lbtf_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n", |
591 | le16_to_cpu(cmd->command)); | |
691cdb49 LCC |
592 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
593 | lbtf_submit_command(priv, cmdnode); | |
594 | } else | |
595 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
e9bd5bcd S |
596 | |
597 | ret = 0; | |
598 | done: | |
599 | lbtf_deb_leave(LBTF_DEB_THREAD); | |
600 | return ret; | |
691cdb49 LCC |
601 | } |
602 | ||
603 | static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv, | |
604 | uint16_t command, struct cmd_header *in_cmd, int in_cmd_size, | |
605 | int (*callback)(struct lbtf_private *, unsigned long, | |
606 | struct cmd_header *), | |
607 | unsigned long callback_arg) | |
608 | { | |
609 | struct cmd_ctrl_node *cmdnode; | |
610 | ||
e9bd5bcd S |
611 | lbtf_deb_enter(LBTF_DEB_HOST); |
612 | ||
613 | if (priv->surpriseremoved) { | |
614 | lbtf_deb_host("PREP_CMD: card removed\n"); | |
615 | cmdnode = ERR_PTR(-ENOENT); | |
616 | goto done; | |
617 | } | |
691cdb49 LCC |
618 | |
619 | cmdnode = lbtf_get_cmd_ctrl_node(priv); | |
620 | if (cmdnode == NULL) { | |
e9bd5bcd S |
621 | lbtf_deb_host("PREP_CMD: cmdnode is NULL\n"); |
622 | ||
691cdb49 LCC |
623 | /* Wake up main thread to execute next command */ |
624 | queue_work(lbtf_wq, &priv->cmd_work); | |
e9bd5bcd S |
625 | cmdnode = ERR_PTR(-ENOBUFS); |
626 | goto done; | |
691cdb49 LCC |
627 | } |
628 | ||
629 | cmdnode->callback = callback; | |
630 | cmdnode->callback_arg = callback_arg; | |
631 | ||
632 | /* Copy the incoming command to the buffer */ | |
633 | memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size); | |
634 | ||
635 | /* Set sequence number, clean result, move to buffer */ | |
636 | priv->seqnum++; | |
637 | cmdnode->cmdbuf->command = cpu_to_le16(command); | |
638 | cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size); | |
639 | cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum); | |
640 | cmdnode->cmdbuf->result = 0; | |
e9bd5bcd S |
641 | |
642 | lbtf_deb_host("PREP_CMD: command 0x%04x\n", command); | |
643 | ||
691cdb49 LCC |
644 | cmdnode->cmdwaitqwoken = 0; |
645 | lbtf_queue_cmd(priv, cmdnode); | |
646 | queue_work(lbtf_wq, &priv->cmd_work); | |
647 | ||
e9bd5bcd S |
648 | done: |
649 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode); | |
691cdb49 LCC |
650 | return cmdnode; |
651 | } | |
652 | ||
653 | void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command, | |
654 | struct cmd_header *in_cmd, int in_cmd_size) | |
655 | { | |
e9bd5bcd | 656 | lbtf_deb_enter(LBTF_DEB_CMD); |
691cdb49 | 657 | __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0); |
e9bd5bcd | 658 | lbtf_deb_leave(LBTF_DEB_CMD); |
691cdb49 LCC |
659 | } |
660 | ||
661 | int __lbtf_cmd(struct lbtf_private *priv, uint16_t command, | |
662 | struct cmd_header *in_cmd, int in_cmd_size, | |
663 | int (*callback)(struct lbtf_private *, | |
664 | unsigned long, struct cmd_header *), | |
665 | unsigned long callback_arg) | |
666 | { | |
667 | struct cmd_ctrl_node *cmdnode; | |
668 | unsigned long flags; | |
669 | int ret = 0; | |
670 | ||
e9bd5bcd S |
671 | lbtf_deb_enter(LBTF_DEB_HOST); |
672 | ||
691cdb49 LCC |
673 | cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, |
674 | callback, callback_arg); | |
e9bd5bcd S |
675 | if (IS_ERR(cmdnode)) { |
676 | ret = PTR_ERR(cmdnode); | |
677 | goto done; | |
678 | } | |
691cdb49 LCC |
679 | |
680 | might_sleep(); | |
681 | ret = wait_event_interruptible(cmdnode->cmdwait_q, | |
682 | cmdnode->cmdwaitqwoken); | |
e9bd5bcd S |
683 | if (ret) { |
684 | pr_info("PREP_CMD: command 0x%04x interrupted by signal: %d\n", | |
685 | command, ret); | |
686 | goto done; | |
691cdb49 LCC |
687 | } |
688 | ||
689 | spin_lock_irqsave(&priv->driver_lock, flags); | |
690 | ret = cmdnode->result; | |
691 | if (ret) | |
e9bd5bcd | 692 | pr_info("PREP_CMD: command 0x%04x failed: %d\n", |
691cdb49 LCC |
693 | command, ret); |
694 | ||
695 | __lbtf_cleanup_and_insert_cmd(priv, cmdnode); | |
696 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
697 | ||
e9bd5bcd S |
698 | done: |
699 | lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); | |
691cdb49 LCC |
700 | return ret; |
701 | } | |
702 | EXPORT_SYMBOL_GPL(__lbtf_cmd); | |
703 | ||
704 | /* Call holding driver_lock */ | |
705 | void lbtf_cmd_response_rx(struct lbtf_private *priv) | |
706 | { | |
707 | priv->cmd_response_rxed = 1; | |
708 | queue_work(lbtf_wq, &priv->cmd_work); | |
709 | } | |
710 | EXPORT_SYMBOL_GPL(lbtf_cmd_response_rx); | |
711 | ||
712 | int lbtf_process_rx_command(struct lbtf_private *priv) | |
713 | { | |
714 | uint16_t respcmd, curcmd; | |
715 | struct cmd_header *resp; | |
716 | int ret = 0; | |
717 | unsigned long flags; | |
718 | uint16_t result; | |
719 | ||
e9bd5bcd S |
720 | lbtf_deb_enter(LBTF_DEB_CMD); |
721 | ||
691cdb49 LCC |
722 | mutex_lock(&priv->lock); |
723 | spin_lock_irqsave(&priv->driver_lock, flags); | |
724 | ||
725 | if (!priv->cur_cmd) { | |
726 | ret = -1; | |
727 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
728 | goto done; | |
729 | } | |
730 | ||
731 | resp = (void *)priv->cmd_resp_buff; | |
732 | curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command); | |
733 | respcmd = le16_to_cpu(resp->command); | |
734 | result = le16_to_cpu(resp->result); | |
735 | ||
744972b2 LR |
736 | lbtf_deb_cmd("libertastf: cmd response 0x%04x, seq %d, size %d\n", |
737 | respcmd, le16_to_cpu(resp->seqnum), | |
738 | le16_to_cpu(resp->size)); | |
691cdb49 LCC |
739 | |
740 | if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) { | |
741 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
742 | ret = -1; | |
743 | goto done; | |
744 | } | |
745 | if (respcmd != CMD_RET(curcmd)) { | |
746 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
747 | ret = -1; | |
748 | goto done; | |
749 | } | |
750 | ||
751 | if (resp->result == cpu_to_le16(0x0004)) { | |
752 | /* 0x0004 means -EAGAIN. Drop the response, let it time out | |
753 | and be resubmitted */ | |
754 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
755 | ret = -1; | |
756 | goto done; | |
757 | } | |
758 | ||
759 | /* Now we got response from FW, cancel the command timer */ | |
760 | del_timer(&priv->command_timer); | |
761 | priv->cmd_timed_out = 0; | |
762 | if (priv->nr_retries) | |
763 | priv->nr_retries = 0; | |
764 | ||
765 | /* If the command is not successful, cleanup and return failure */ | |
766 | if ((result != 0 || !(respcmd & 0x8000))) { | |
767 | /* | |
768 | * Handling errors here | |
769 | */ | |
770 | switch (respcmd) { | |
771 | case CMD_RET(CMD_GET_HW_SPEC): | |
772 | case CMD_RET(CMD_802_11_RESET): | |
e9bd5bcd | 773 | pr_info("libertastf: reset failed\n"); |
691cdb49 LCC |
774 | break; |
775 | ||
776 | } | |
777 | lbtf_complete_command(priv, priv->cur_cmd, result); | |
778 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
779 | ||
780 | ret = -1; | |
781 | goto done; | |
782 | } | |
783 | ||
784 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
785 | ||
786 | if (priv->cur_cmd && priv->cur_cmd->callback) { | |
787 | ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg, | |
788 | resp); | |
789 | } | |
790 | spin_lock_irqsave(&priv->driver_lock, flags); | |
791 | ||
792 | if (priv->cur_cmd) { | |
793 | /* Clean up and Put current command back to cmdfreeq */ | |
794 | lbtf_complete_command(priv, priv->cur_cmd, result); | |
795 | } | |
796 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
797 | ||
798 | done: | |
799 | mutex_unlock(&priv->lock); | |
e9bd5bcd | 800 | lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
691cdb49 LCC |
801 | return ret; |
802 | } |