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1#include "cmd.h"
2
3#include <linux/module.h>
4#include <linux/slab.h>
5#include <linux/crc7.h>
6
7#include "wl1251.h"
8#include "reg.h"
9#include "io.h"
10#include "ps.h"
11#include "acx.h"
12
13/**
14 * send command to firmware
15 *
16 * @wl: wl struct
17 * @id: command id
18 * @buf: buffer containing the command, must work with dma
19 * @len: length of the buffer
20 */
21int wl1251_cmd_send(struct wl1251 *wl, u16 id, void *buf, size_t len)
22{
23 struct wl1251_cmd_header *cmd;
24 unsigned long timeout;
25 u32 intr;
26 int ret = 0;
27
28 cmd = buf;
29 cmd->id = id;
30 cmd->status = 0;
31
32 WARN_ON(len % 4 != 0);
33
34 wl1251_mem_write(wl, wl->cmd_box_addr, buf, len);
35
36 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
37
38 timeout = jiffies + msecs_to_jiffies(WL1251_COMMAND_TIMEOUT);
39
40 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
41 while (!(intr & WL1251_ACX_INTR_CMD_COMPLETE)) {
42 if (time_after(jiffies, timeout)) {
43 wl1251_error("command complete timeout");
44 ret = -ETIMEDOUT;
45 goto out;
46 }
47
48 msleep(1);
49
50 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
51 }
52
53 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_ACK,
54 WL1251_ACX_INTR_CMD_COMPLETE);
55
56out:
57 return ret;
58}
59
60/**
61 * send test command to firmware
62 *
63 * @wl: wl struct
64 * @buf: buffer containing the command, with all headers, must work with dma
65 * @len: length of the buffer
66 * @answer: is answer needed
67 */
68int wl1251_cmd_test(struct wl1251 *wl, void *buf, size_t buf_len, u8 answer)
69{
70 int ret;
71
72 wl1251_debug(DEBUG_CMD, "cmd test");
73
74 ret = wl1251_cmd_send(wl, CMD_TEST, buf, buf_len);
75
76 if (ret < 0) {
77 wl1251_warning("TEST command failed");
78 return ret;
79 }
80
81 if (answer) {
82 struct wl1251_command *cmd_answer;
83
84 /*
85 * The test command got in, we can read the answer.
86 * The answer would be a wl1251_command, where the
87 * parameter array contains the actual answer.
88 */
89 wl1251_mem_read(wl, wl->cmd_box_addr, buf, buf_len);
90
91 cmd_answer = buf;
92
93 if (cmd_answer->header.status != CMD_STATUS_SUCCESS)
94 wl1251_error("TEST command answer error: %d",
95 cmd_answer->header.status);
96 }
97
98 return 0;
99}
100
101/**
102 * read acx from firmware
103 *
104 * @wl: wl struct
105 * @id: acx id
106 * @buf: buffer for the response, including all headers, must work with dma
107 * @len: length of buf
108 */
109int wl1251_cmd_interrogate(struct wl1251 *wl, u16 id, void *buf, size_t len)
110{
111 struct acx_header *acx = buf;
112 int ret;
113
114 wl1251_debug(DEBUG_CMD, "cmd interrogate");
115
116 acx->id = id;
117
118 /* payload length, does not include any headers */
119 acx->len = len - sizeof(*acx);
120
121 ret = wl1251_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx));
122 if (ret < 0) {
123 wl1251_error("INTERROGATE command failed");
124 goto out;
125 }
126
127 /* the interrogate command got in, we can read the answer */
128 wl1251_mem_read(wl, wl->cmd_box_addr, buf, len);
129
130 acx = buf;
131 if (acx->cmd.status != CMD_STATUS_SUCCESS)
132 wl1251_error("INTERROGATE command error: %d",
133 acx->cmd.status);
134
135out:
136 return ret;
137}
138
139/**
140 * write acx value to firmware
141 *
142 * @wl: wl struct
143 * @id: acx id
144 * @buf: buffer containing acx, including all headers, must work with dma
145 * @len: length of buf
146 */
147int wl1251_cmd_configure(struct wl1251 *wl, u16 id, void *buf, size_t len)
148{
149 struct acx_header *acx = buf;
150 int ret;
151
152 wl1251_debug(DEBUG_CMD, "cmd configure");
153
154 acx->id = id;
155
156 /* payload length, does not include any headers */
157 acx->len = len - sizeof(*acx);
158
159 ret = wl1251_cmd_send(wl, CMD_CONFIGURE, acx, len);
160 if (ret < 0) {
161 wl1251_warning("CONFIGURE command NOK");
162 return ret;
163 }
164
165 return 0;
166}
167
168int wl1251_cmd_vbm(struct wl1251 *wl, u8 identity,
169 void *bitmap, u16 bitmap_len, u8 bitmap_control)
170{
171 struct wl1251_cmd_vbm_update *vbm;
172 int ret;
173
174 wl1251_debug(DEBUG_CMD, "cmd vbm");
175
176 vbm = kzalloc(sizeof(*vbm), GFP_KERNEL);
177 if (!vbm) {
178 ret = -ENOMEM;
179 goto out;
180 }
181
182 /* Count and period will be filled by the target */
183 vbm->tim.bitmap_ctrl = bitmap_control;
184 if (bitmap_len > PARTIAL_VBM_MAX) {
185 wl1251_warning("cmd vbm len is %d B, truncating to %d",
186 bitmap_len, PARTIAL_VBM_MAX);
187 bitmap_len = PARTIAL_VBM_MAX;
188 }
189 memcpy(vbm->tim.pvb_field, bitmap, bitmap_len);
190 vbm->tim.identity = identity;
191 vbm->tim.length = bitmap_len + 3;
192
193 vbm->len = cpu_to_le16(bitmap_len + 5);
194
195 ret = wl1251_cmd_send(wl, CMD_VBM, vbm, sizeof(*vbm));
196 if (ret < 0) {
197 wl1251_error("VBM command failed");
198 goto out;
199 }
200
201out:
202 kfree(vbm);
203 return ret;
204}
205
206int wl1251_cmd_data_path(struct wl1251 *wl, u8 channel, bool enable)
207{
208 struct cmd_enabledisable_path *cmd;
209 int ret;
210 u16 cmd_rx, cmd_tx;
211
212 wl1251_debug(DEBUG_CMD, "cmd data path");
213
214 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
215 if (!cmd) {
216 ret = -ENOMEM;
217 goto out;
218 }
219
220 cmd->channel = channel;
221
222 if (enable) {
223 cmd_rx = CMD_ENABLE_RX;
224 cmd_tx = CMD_ENABLE_TX;
225 } else {
226 cmd_rx = CMD_DISABLE_RX;
227 cmd_tx = CMD_DISABLE_TX;
228 }
229
230 ret = wl1251_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd));
231 if (ret < 0) {
232 wl1251_error("rx %s cmd for channel %d failed",
233 enable ? "start" : "stop", channel);
234 goto out;
235 }
236
237 wl1251_debug(DEBUG_BOOT, "rx %s cmd channel %d",
238 enable ? "start" : "stop", channel);
239
240 ret = wl1251_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd));
241 if (ret < 0) {
242 wl1251_error("tx %s cmd for channel %d failed",
243 enable ? "start" : "stop", channel);
244 goto out;
245 }
246
247 wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d",
248 enable ? "start" : "stop", channel);
249
250out:
251 kfree(cmd);
252 return ret;
253}
254
255int wl1251_cmd_join(struct wl1251 *wl, u8 bss_type, u8 channel,
256 u16 beacon_interval, u8 dtim_interval)
257{
258 struct cmd_join *join;
259 int ret, i;
260 u8 *bssid;
261
262 join = kzalloc(sizeof(*join), GFP_KERNEL);
263 if (!join) {
264 ret = -ENOMEM;
265 goto out;
266 }
267
268 wl1251_debug(DEBUG_CMD, "cmd join%s ch %d %d/%d",
269 bss_type == BSS_TYPE_IBSS ? " ibss" : "",
270 channel, beacon_interval, dtim_interval);
271
272 /* Reverse order BSSID */
273 bssid = (u8 *) &join->bssid_lsb;
274 for (i = 0; i < ETH_ALEN; i++)
275 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
276
277 join->rx_config_options = wl->rx_config;
278 join->rx_filter_options = wl->rx_filter;
279
280 /*
281 * FIXME: disable temporarily all filters because after commit
282 * 9cef8737 "mac80211: fix managed mode BSSID handling" broke
283 * association. The filter logic needs to be implemented properly
284 * and once that is done, this hack can be removed.
285 */
286 join->rx_config_options = 0;
287 join->rx_filter_options = WL1251_DEFAULT_RX_FILTER;
288
289 join->basic_rate_set = RATE_MASK_1MBPS | RATE_MASK_2MBPS |
290 RATE_MASK_5_5MBPS | RATE_MASK_11MBPS;
291
292 join->beacon_interval = beacon_interval;
293 join->dtim_interval = dtim_interval;
294 join->bss_type = bss_type;
295 join->channel = channel;
296 join->ctrl = JOIN_CMD_CTRL_TX_FLUSH;
297
298 ret = wl1251_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join));
299 if (ret < 0) {
300 wl1251_error("failed to initiate cmd join");
301 goto out;
302 }
303
304out:
305 kfree(join);
306 return ret;
307}
308
309int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode)
310{
311 struct wl1251_cmd_ps_params *ps_params = NULL;
312 int ret = 0;
313
314 wl1251_debug(DEBUG_CMD, "cmd set ps mode");
315
316 ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
317 if (!ps_params) {
318 ret = -ENOMEM;
319 goto out;
320 }
321
322 ps_params->ps_mode = ps_mode;
323 ps_params->send_null_data = 1;
324 ps_params->retries = 5;
325 ps_params->hang_over_period = 128;
326 ps_params->null_data_rate = 1; /* 1 Mbps */
327
328 ret = wl1251_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
329 sizeof(*ps_params));
330 if (ret < 0) {
331 wl1251_error("cmd set_ps_mode failed");
332 goto out;
333 }
334
335out:
336 kfree(ps_params);
337 return ret;
338}
339
340int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer,
341 size_t len)
342{
343 struct cmd_read_write_memory *cmd;
344 int ret = 0;
345
346 wl1251_debug(DEBUG_CMD, "cmd read memory");
347
348 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
349 if (!cmd) {
350 ret = -ENOMEM;
351 goto out;
352 }
353
354 WARN_ON(len > MAX_READ_SIZE);
355 len = min_t(size_t, len, MAX_READ_SIZE);
356
357 cmd->addr = addr;
358 cmd->size = len;
359
360 ret = wl1251_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd));
361 if (ret < 0) {
362 wl1251_error("read memory command failed: %d", ret);
363 goto out;
364 }
365
366 /* the read command got in, we can now read the answer */
367 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd));
368
369 if (cmd->header.status != CMD_STATUS_SUCCESS)
370 wl1251_error("error in read command result: %d",
371 cmd->header.status);
372
373 memcpy(answer, cmd->value, len);
374
375out:
376 kfree(cmd);
377 return ret;
378}
379
380int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id,
381 void *buf, size_t buf_len)
382{
383 struct wl1251_cmd_packet_template *cmd;
384 size_t cmd_len;
385 int ret = 0;
386
387 wl1251_debug(DEBUG_CMD, "cmd template %d", cmd_id);
388
389 WARN_ON(buf_len > WL1251_MAX_TEMPLATE_SIZE);
390 buf_len = min_t(size_t, buf_len, WL1251_MAX_TEMPLATE_SIZE);
391 cmd_len = ALIGN(sizeof(*cmd) + buf_len, 4);
392
393 cmd = kzalloc(cmd_len, GFP_KERNEL);
394 if (!cmd) {
395 ret = -ENOMEM;
396 goto out;
397 }
398
399 cmd->size = cpu_to_le16(buf_len);
400
401 if (buf)
402 memcpy(cmd->data, buf, buf_len);
403
404 ret = wl1251_cmd_send(wl, cmd_id, cmd, cmd_len);
405 if (ret < 0) {
406 wl1251_warning("cmd set_template failed: %d", ret);
407 goto out;
408 }
409
410out:
411 kfree(cmd);
412 return ret;
413}
414
415int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len,
416 struct ieee80211_channel *channels[],
417 unsigned int n_channels, unsigned int n_probes)
418{
419 struct wl1251_cmd_scan *cmd;
420 int i, ret = 0;
421
422 wl1251_debug(DEBUG_CMD, "cmd scan");
423
424 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
425 if (!cmd)
426 return -ENOMEM;
427
428 cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
429 cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN |
430 CFG_RX_MGMT_EN |
431 CFG_RX_BCN_EN);
432 cmd->params.scan_options = 0;
433 cmd->params.num_channels = n_channels;
434 cmd->params.num_probe_requests = n_probes;
435 cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
436 cmd->params.tid_trigger = 0;
437
438 for (i = 0; i < n_channels; i++) {
439 cmd->channels[i].min_duration =
440 cpu_to_le32(WL1251_SCAN_MIN_DURATION);
441 cmd->channels[i].max_duration =
442 cpu_to_le32(WL1251_SCAN_MAX_DURATION);
443 memset(&cmd->channels[i].bssid_lsb, 0xff, 4);
444 memset(&cmd->channels[i].bssid_msb, 0xff, 2);
445 cmd->channels[i].early_termination = 0;
446 cmd->channels[i].tx_power_att = 0;
447 cmd->channels[i].channel = channels[i]->hw_value;
448 }
449
450 cmd->params.ssid_len = ssid_len;
451 if (ssid)
452 memcpy(cmd->params.ssid, ssid, ssid_len);
453
454 ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd));
455 if (ret < 0) {
456 wl1251_error("cmd scan failed: %d", ret);
457 goto out;
458 }
459
460 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd));
461
462 if (cmd->header.status != CMD_STATUS_SUCCESS) {
463 wl1251_error("cmd scan status wasn't success: %d",
464 cmd->header.status);
465 ret = -EIO;
466 goto out;
467 }
468
469out:
470 kfree(cmd);
471 return ret;
472}
473
474int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout)
475{
476 struct wl1251_cmd_trigger_scan_to *cmd;
477 int ret;
478
479 wl1251_debug(DEBUG_CMD, "cmd trigger scan to");
480
481 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
482 if (!cmd)
483 return -ENOMEM;
484
485 cmd->timeout = timeout;
486
487 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd));
488 if (ret < 0) {
489 wl1251_error("cmd trigger scan to failed: %d", ret);
490 goto out;
491 }
492
493out:
494 kfree(cmd);
495 return ret;
496}