gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / wireless / ti / wl1251 / cmd.c
blob9547aea01b0fbd3be677a7b524d287f444af826f
1 // SPDX-License-Identifier: GPL-2.0
2 #include "cmd.h"
4 #include <linux/module.h>
5 #include <linux/slab.h>
6 #include <linux/etherdevice.h>
8 #include "wl1251.h"
9 #include "reg.h"
10 #include "io.h"
11 #include "ps.h"
12 #include "acx.h"
14 /**
15 * send command to firmware
17 * @wl: wl struct
18 * @id: command id
19 * @buf: buffer containing the command, must work with dma
20 * @len: length of the buffer
22 int wl1251_cmd_send(struct wl1251 *wl, u16 id, void *buf, size_t len)
24 struct wl1251_cmd_header *cmd;
25 unsigned long timeout;
26 u32 intr;
27 int ret = 0;
29 cmd = buf;
30 cmd->id = id;
31 cmd->status = 0;
33 WARN_ON(len % 4 != 0);
35 wl1251_mem_write(wl, wl->cmd_box_addr, buf, len);
37 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
39 timeout = jiffies + msecs_to_jiffies(WL1251_COMMAND_TIMEOUT);
41 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
42 while (!(intr & WL1251_ACX_INTR_CMD_COMPLETE)) {
43 if (time_after(jiffies, timeout)) {
44 wl1251_error("command complete timeout");
45 ret = -ETIMEDOUT;
46 goto out;
49 msleep(1);
51 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
54 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_ACK,
55 WL1251_ACX_INTR_CMD_COMPLETE);
57 out:
58 return ret;
61 /**
62 * send test command to firmware
64 * @wl: wl struct
65 * @buf: buffer containing the command, with all headers, must work with dma
66 * @len: length of the buffer
67 * @answer: is answer needed
69 int wl1251_cmd_test(struct wl1251 *wl, void *buf, size_t buf_len, u8 answer)
71 int ret;
73 wl1251_debug(DEBUG_CMD, "cmd test");
75 ret = wl1251_cmd_send(wl, CMD_TEST, buf, buf_len);
77 if (ret < 0) {
78 wl1251_warning("TEST command failed");
79 return ret;
82 if (answer) {
83 struct wl1251_command *cmd_answer;
86 * The test command got in, we can read the answer.
87 * The answer would be a wl1251_command, where the
88 * parameter array contains the actual answer.
90 wl1251_mem_read(wl, wl->cmd_box_addr, buf, buf_len);
92 cmd_answer = buf;
94 if (cmd_answer->header.status != CMD_STATUS_SUCCESS)
95 wl1251_error("TEST command answer error: %d",
96 cmd_answer->header.status);
99 return 0;
103 * read acx from firmware
105 * @wl: wl struct
106 * @id: acx id
107 * @buf: buffer for the response, including all headers, must work with dma
108 * @len: length of buf
110 int wl1251_cmd_interrogate(struct wl1251 *wl, u16 id, void *buf, size_t len)
112 struct acx_header *acx = buf;
113 int ret;
115 wl1251_debug(DEBUG_CMD, "cmd interrogate");
117 acx->id = id;
119 /* payload length, does not include any headers */
120 acx->len = len - sizeof(*acx);
122 ret = wl1251_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx));
123 if (ret < 0) {
124 wl1251_error("INTERROGATE command failed");
125 goto out;
128 /* the interrogate command got in, we can read the answer */
129 wl1251_mem_read(wl, wl->cmd_box_addr, buf, len);
131 acx = buf;
132 if (acx->cmd.status != CMD_STATUS_SUCCESS)
133 wl1251_error("INTERROGATE command error: %d",
134 acx->cmd.status);
136 out:
137 return ret;
141 * write acx value to firmware
143 * @wl: wl struct
144 * @id: acx id
145 * @buf: buffer containing acx, including all headers, must work with dma
146 * @len: length of buf
148 int wl1251_cmd_configure(struct wl1251 *wl, u16 id, void *buf, size_t len)
150 struct acx_header *acx = buf;
151 int ret;
153 wl1251_debug(DEBUG_CMD, "cmd configure");
155 acx->id = id;
157 /* payload length, does not include any headers */
158 acx->len = len - sizeof(*acx);
160 ret = wl1251_cmd_send(wl, CMD_CONFIGURE, acx, len);
161 if (ret < 0) {
162 wl1251_warning("CONFIGURE command NOK");
163 return ret;
166 return 0;
169 int wl1251_cmd_vbm(struct wl1251 *wl, u8 identity,
170 void *bitmap, u16 bitmap_len, u8 bitmap_control)
172 struct wl1251_cmd_vbm_update *vbm;
173 int ret;
175 wl1251_debug(DEBUG_CMD, "cmd vbm");
177 vbm = kzalloc(sizeof(*vbm), GFP_KERNEL);
178 if (!vbm) {
179 ret = -ENOMEM;
180 goto out;
183 /* Count and period will be filled by the target */
184 vbm->tim.bitmap_ctrl = bitmap_control;
185 if (bitmap_len > PARTIAL_VBM_MAX) {
186 wl1251_warning("cmd vbm len is %d B, truncating to %d",
187 bitmap_len, PARTIAL_VBM_MAX);
188 bitmap_len = PARTIAL_VBM_MAX;
190 memcpy(vbm->tim.pvb_field, bitmap, bitmap_len);
191 vbm->tim.identity = identity;
192 vbm->tim.length = bitmap_len + 3;
194 vbm->len = cpu_to_le16(bitmap_len + 5);
196 ret = wl1251_cmd_send(wl, CMD_VBM, vbm, sizeof(*vbm));
197 if (ret < 0) {
198 wl1251_error("VBM command failed");
199 goto out;
202 out:
203 kfree(vbm);
204 return ret;
207 int wl1251_cmd_data_path_rx(struct wl1251 *wl, u8 channel, bool enable)
209 struct cmd_enabledisable_path *cmd;
210 int ret;
211 u16 cmd_rx;
213 wl1251_debug(DEBUG_CMD, "cmd data path");
215 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
216 if (!cmd) {
217 ret = -ENOMEM;
218 goto out;
221 cmd->channel = channel;
223 if (enable)
224 cmd_rx = CMD_ENABLE_RX;
225 else
226 cmd_rx = CMD_DISABLE_RX;
228 ret = wl1251_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd));
229 if (ret < 0) {
230 wl1251_error("rx %s cmd for channel %d failed",
231 enable ? "start" : "stop", channel);
232 goto out;
235 wl1251_debug(DEBUG_BOOT, "rx %s cmd channel %d",
236 enable ? "start" : "stop", channel);
238 out:
239 kfree(cmd);
240 return ret;
243 int wl1251_cmd_data_path_tx(struct wl1251 *wl, u8 channel, bool enable)
245 struct cmd_enabledisable_path *cmd;
246 int ret;
247 u16 cmd_tx;
249 wl1251_debug(DEBUG_CMD, "cmd data path");
251 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
252 if (!cmd)
253 return -ENOMEM;
255 cmd->channel = channel;
257 if (enable)
258 cmd_tx = CMD_ENABLE_TX;
259 else
260 cmd_tx = CMD_DISABLE_TX;
262 ret = wl1251_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd));
263 if (ret < 0)
264 wl1251_error("tx %s cmd for channel %d failed",
265 enable ? "start" : "stop", channel);
266 else
267 wl1251_debug(DEBUG_BOOT, "tx %s cmd channel %d",
268 enable ? "start" : "stop", channel);
270 kfree(cmd);
271 return ret;
274 int wl1251_cmd_join(struct wl1251 *wl, u8 bss_type, u8 channel,
275 u16 beacon_interval, u8 dtim_interval)
277 struct cmd_join *join;
278 int ret, i;
279 u8 *bssid;
281 join = kzalloc(sizeof(*join), GFP_KERNEL);
282 if (!join) {
283 ret = -ENOMEM;
284 goto out;
287 wl1251_debug(DEBUG_CMD, "cmd join%s ch %d %d/%d",
288 bss_type == BSS_TYPE_IBSS ? " ibss" : "",
289 channel, beacon_interval, dtim_interval);
291 /* Reverse order BSSID */
292 bssid = (u8 *) &join->bssid_lsb;
293 for (i = 0; i < ETH_ALEN; i++)
294 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
296 join->rx_config_options = wl->rx_config;
297 join->rx_filter_options = wl->rx_filter;
299 join->basic_rate_set = RATE_MASK_1MBPS | RATE_MASK_2MBPS |
300 RATE_MASK_5_5MBPS | RATE_MASK_11MBPS;
302 join->beacon_interval = beacon_interval;
303 join->dtim_interval = dtim_interval;
304 join->bss_type = bss_type;
305 join->channel = channel;
306 join->ctrl = JOIN_CMD_CTRL_TX_FLUSH;
308 ret = wl1251_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join));
309 if (ret < 0) {
310 wl1251_error("failed to initiate cmd join");
311 goto out;
314 out:
315 kfree(join);
316 return ret;
319 int wl1251_cmd_ps_mode(struct wl1251 *wl, u8 ps_mode)
321 struct wl1251_cmd_ps_params *ps_params = NULL;
322 int ret = 0;
324 wl1251_debug(DEBUG_CMD, "cmd set ps mode");
326 ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
327 if (!ps_params) {
328 ret = -ENOMEM;
329 goto out;
332 ps_params->ps_mode = ps_mode;
333 ps_params->send_null_data = 1;
334 ps_params->retries = 5;
335 ps_params->hang_over_period = 128;
336 ps_params->null_data_rate = 1; /* 1 Mbps */
338 ret = wl1251_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
339 sizeof(*ps_params));
340 if (ret < 0) {
341 wl1251_error("cmd set_ps_mode failed");
342 goto out;
345 out:
346 kfree(ps_params);
347 return ret;
350 int wl1251_cmd_read_memory(struct wl1251 *wl, u32 addr, void *answer,
351 size_t len)
353 struct cmd_read_write_memory *cmd;
354 int ret = 0;
356 wl1251_debug(DEBUG_CMD, "cmd read memory");
358 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
359 if (!cmd) {
360 ret = -ENOMEM;
361 goto out;
364 WARN_ON(len > MAX_READ_SIZE);
365 len = min_t(size_t, len, MAX_READ_SIZE);
367 cmd->addr = addr;
368 cmd->size = len;
370 ret = wl1251_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd));
371 if (ret < 0) {
372 wl1251_error("read memory command failed: %d", ret);
373 goto out;
376 /* the read command got in, we can now read the answer */
377 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd));
379 if (cmd->header.status != CMD_STATUS_SUCCESS)
380 wl1251_error("error in read command result: %d",
381 cmd->header.status);
383 memcpy(answer, cmd->value, len);
385 out:
386 kfree(cmd);
387 return ret;
390 int wl1251_cmd_template_set(struct wl1251 *wl, u16 cmd_id,
391 void *buf, size_t buf_len)
393 struct wl1251_cmd_packet_template *cmd;
394 size_t cmd_len;
395 int ret = 0;
397 wl1251_debug(DEBUG_CMD, "cmd template %d", cmd_id);
399 WARN_ON(buf_len > WL1251_MAX_TEMPLATE_SIZE);
400 buf_len = min_t(size_t, buf_len, WL1251_MAX_TEMPLATE_SIZE);
401 cmd_len = ALIGN(sizeof(*cmd) + buf_len, 4);
403 cmd = kzalloc(cmd_len, GFP_KERNEL);
404 if (!cmd) {
405 ret = -ENOMEM;
406 goto out;
409 cmd->size = cpu_to_le16(buf_len);
411 if (buf)
412 memcpy(cmd->data, buf, buf_len);
414 ret = wl1251_cmd_send(wl, cmd_id, cmd, cmd_len);
415 if (ret < 0) {
416 wl1251_warning("cmd set_template failed: %d", ret);
417 goto out;
420 out:
421 kfree(cmd);
422 return ret;
425 int wl1251_cmd_scan(struct wl1251 *wl, u8 *ssid, size_t ssid_len,
426 struct ieee80211_channel *channels[],
427 unsigned int n_channels, unsigned int n_probes)
429 struct wl1251_cmd_scan *cmd;
430 int i, ret = 0;
432 wl1251_debug(DEBUG_CMD, "cmd scan channels %d", n_channels);
434 WARN_ON(n_channels > SCAN_MAX_NUM_OF_CHANNELS);
436 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
437 if (!cmd)
438 return -ENOMEM;
440 cmd->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
441 cmd->params.rx_filter_options = cpu_to_le32(CFG_RX_PRSP_EN |
442 CFG_RX_MGMT_EN |
443 CFG_RX_BCN_EN);
444 cmd->params.scan_options = 0;
446 * Use high priority scan when not associated to prevent fw issue
447 * causing never-ending scans (sometimes 20+ minutes).
448 * Note: This bug may be caused by the fw's DTIM handling.
450 if (is_zero_ether_addr(wl->bssid))
451 cmd->params.scan_options |= cpu_to_le16(WL1251_SCAN_OPT_PRIORITY_HIGH);
452 cmd->params.num_channels = n_channels;
453 cmd->params.num_probe_requests = n_probes;
454 cmd->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
455 cmd->params.tid_trigger = 0;
457 for (i = 0; i < n_channels; i++) {
458 cmd->channels[i].min_duration =
459 cpu_to_le32(WL1251_SCAN_MIN_DURATION);
460 cmd->channels[i].max_duration =
461 cpu_to_le32(WL1251_SCAN_MAX_DURATION);
462 memset(&cmd->channels[i].bssid_lsb, 0xff, 4);
463 memset(&cmd->channels[i].bssid_msb, 0xff, 2);
464 cmd->channels[i].early_termination = 0;
465 cmd->channels[i].tx_power_att = 0;
466 cmd->channels[i].channel = channels[i]->hw_value;
469 cmd->params.ssid_len = ssid_len;
470 if (ssid)
471 memcpy(cmd->params.ssid, ssid, ssid_len);
473 ret = wl1251_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd));
474 if (ret < 0) {
475 wl1251_error("cmd scan failed: %d", ret);
476 goto out;
479 wl1251_mem_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd));
481 if (cmd->header.status != CMD_STATUS_SUCCESS) {
482 wl1251_error("cmd scan status wasn't success: %d",
483 cmd->header.status);
484 ret = -EIO;
485 goto out;
488 out:
489 kfree(cmd);
490 return ret;
493 int wl1251_cmd_trigger_scan_to(struct wl1251 *wl, u32 timeout)
495 struct wl1251_cmd_trigger_scan_to *cmd;
496 int ret;
498 wl1251_debug(DEBUG_CMD, "cmd trigger scan to");
500 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
501 if (!cmd)
502 return -ENOMEM;
504 cmd->timeout = timeout;
506 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, cmd, sizeof(*cmd));
507 if (ret < 0) {
508 wl1251_error("cmd trigger scan to failed: %d", ret);
509 goto out;
512 out:
513 kfree(cmd);
514 return ret;