2 * This file is part of wl1271
4 * Copyright (C) 2009 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 #include <linux/module.h>
25 #include <linux/platform_device.h>
26 #include <linux/crc7.h>
27 #include <linux/spi/spi.h>
28 #include <linux/etherdevice.h>
31 #include "wl1271_reg.h"
32 #include "wl1271_spi.h"
33 #include "wl1271_acx.h"
34 #include "wl12xx_80211.h"
35 #include "wl1271_cmd.h"
38 * send command to firmware
42 * @buf: buffer containing the command, must work with dma
43 * @len: length of the buffer
45 int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len)
47 struct wl1271_cmd_header *cmd;
48 unsigned long timeout;
56 WARN_ON(len % 4 != 0);
58 wl1271_spi_write(wl, wl->cmd_box_addr, buf, len, false);
60 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_CMD);
62 timeout = jiffies + msecs_to_jiffies(WL1271_COMMAND_TIMEOUT);
64 intr = wl1271_spi_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
65 while (!(intr & WL1271_ACX_INTR_CMD_COMPLETE)) {
66 if (time_after(jiffies, timeout)) {
67 wl1271_error("command complete timeout");
74 intr = wl1271_spi_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
77 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_ACK,
78 WL1271_ACX_INTR_CMD_COMPLETE);
84 int wl1271_cmd_cal_channel_tune(struct wl1271 *wl)
86 struct wl1271_cmd_cal_channel_tune *cmd;
89 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
93 cmd->test.id = TEST_CMD_CHANNEL_TUNE;
95 cmd->band = WL1271_CHANNEL_TUNE_BAND_2_4;
96 /* set up any channel, 7 is in the middle of the range */
99 ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
101 wl1271_warning("TEST_CMD_CHANNEL_TUNE failed");
107 int wl1271_cmd_cal_update_ref_point(struct wl1271 *wl)
109 struct wl1271_cmd_cal_update_ref_point *cmd;
112 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
116 cmd->test.id = TEST_CMD_UPDATE_PD_REFERENCE_POINT;
118 /* FIXME: still waiting for the correct values */
120 cmd->ref_detector = 0;
122 cmd->sub_band = WL1271_PD_REFERENCE_POINT_BAND_B_G;
124 ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
126 wl1271_warning("TEST_CMD_UPDATE_PD_REFERENCE_POINT failed");
132 int wl1271_cmd_cal_p2g(struct wl1271 *wl)
134 struct wl1271_cmd_cal_p2g *cmd;
137 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
141 cmd->test.id = TEST_CMD_P2G_CAL;
143 cmd->sub_band_mask = WL1271_CAL_P2G_BAND_B_G;
145 ret = wl1271_cmd_test(wl, cmd, sizeof(*cmd), 0);
147 wl1271_warning("TEST_CMD_P2G_CAL failed");
153 int wl1271_cmd_cal(struct wl1271 *wl)
156 * FIXME: we must make sure that we're not sleeping when calibration
161 wl1271_notice("performing tx calibration");
163 ret = wl1271_cmd_cal_channel_tune(wl);
167 ret = wl1271_cmd_cal_update_ref_point(wl);
171 ret = wl1271_cmd_cal_p2g(wl);
178 int wl1271_cmd_join(struct wl1271 *wl)
180 static bool do_cal = true;
181 struct wl1271_cmd_join *join;
185 /* FIXME: remove when we get calibration from the factory */
187 ret = wl1271_cmd_cal(wl);
189 wl1271_warning("couldn't calibrate");
194 /* FIXME: This is a workaround, because with the current stack, we
195 * cannot know when we have disassociated. So, if we have already
196 * joined, we disconnect before joining again. */
198 ret = wl1271_cmd_disconnect(wl);
200 wl1271_error("failed to disconnect before rejoining");
207 join = kzalloc(sizeof(*join), GFP_KERNEL);
213 wl1271_debug(DEBUG_CMD, "cmd join");
215 /* Reverse order BSSID */
216 bssid = (u8 *) &join->bssid_lsb;
217 for (i = 0; i < ETH_ALEN; i++)
218 bssid[i] = wl->bssid[ETH_ALEN - i - 1];
220 join->rx_config_options = wl->rx_config;
221 join->rx_filter_options = wl->rx_filter;
224 * FIXME: disable temporarily all filters because after commit
225 * 9cef8737 "mac80211: fix managed mode BSSID handling" broke
226 * association. The filter logic needs to be implemented properly
227 * and once that is done, this hack can be removed.
229 join->rx_config_options = 0;
230 join->rx_filter_options = WL1271_DEFAULT_RX_FILTER;
232 join->basic_rate_set = CONF_HW_BIT_RATE_1MBPS | CONF_HW_BIT_RATE_2MBPS |
233 CONF_HW_BIT_RATE_5_5MBPS | CONF_HW_BIT_RATE_11MBPS;
235 join->beacon_interval = WL1271_DEFAULT_BEACON_INT;
236 join->dtim_interval = WL1271_DEFAULT_DTIM_PERIOD;
237 join->bss_type = wl->bss_type;
238 join->channel = wl->channel;
239 join->ssid_len = wl->ssid_len;
240 memcpy(join->ssid, wl->ssid, wl->ssid_len);
241 join->ctrl = WL1271_JOIN_CMD_CTRL_TX_FLUSH;
243 /* increment the session counter */
244 wl->session_counter++;
245 if (wl->session_counter >= SESSION_COUNTER_MAX)
246 wl->session_counter = 0;
248 join->ctrl |= wl->session_counter << WL1271_JOIN_CMD_TX_SESSION_OFFSET;
250 /* reset TX security counters */
251 wl->tx_security_last_seq = 0;
252 wl->tx_security_seq_16 = 0;
253 wl->tx_security_seq_32 = 0;
255 ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join));
257 wl1271_error("failed to initiate cmd join");
264 * ugly hack: we should wait for JOIN_EVENT_COMPLETE_ID but to
265 * simplify locking we just sleep instead, for now
277 * send test command to firmware
280 * @buf: buffer containing the command, with all headers, must work with dma
281 * @len: length of the buffer
282 * @answer: is answer needed
284 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
288 wl1271_debug(DEBUG_CMD, "cmd test");
290 ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len);
293 wl1271_warning("TEST command failed");
298 struct wl1271_command *cmd_answer;
301 * The test command got in, we can read the answer.
302 * The answer would be a wl1271_command, where the
303 * parameter array contains the actual answer.
305 wl1271_spi_read(wl, wl->cmd_box_addr, buf, buf_len, false);
309 if (cmd_answer->header.status != CMD_STATUS_SUCCESS)
310 wl1271_error("TEST command answer error: %d",
311 cmd_answer->header.status);
318 * read acx from firmware
322 * @buf: buffer for the response, including all headers, must work with dma
323 * @len: lenght of buf
325 int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
327 struct acx_header *acx = buf;
330 wl1271_debug(DEBUG_CMD, "cmd interrogate");
334 /* payload length, does not include any headers */
335 acx->len = len - sizeof(*acx);
337 ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx));
339 wl1271_error("INTERROGATE command failed");
343 /* the interrogate command got in, we can read the answer */
344 wl1271_spi_read(wl, wl->cmd_box_addr, buf, len, false);
347 if (acx->cmd.status != CMD_STATUS_SUCCESS)
348 wl1271_error("INTERROGATE command error: %d",
356 * write acx value to firmware
360 * @buf: buffer containing acx, including all headers, must work with dma
361 * @len: length of buf
363 int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
365 struct acx_header *acx = buf;
368 wl1271_debug(DEBUG_CMD, "cmd configure");
372 /* payload length, does not include any headers */
373 acx->len = len - sizeof(*acx);
375 ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len);
377 wl1271_warning("CONFIGURE command NOK");
384 int wl1271_cmd_data_path(struct wl1271 *wl, u8 channel, bool enable)
386 struct cmd_enabledisable_path *cmd;
390 wl1271_debug(DEBUG_CMD, "cmd data path");
392 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
398 cmd->channel = channel;
401 cmd_rx = CMD_ENABLE_RX;
402 cmd_tx = CMD_ENABLE_TX;
404 cmd_rx = CMD_DISABLE_RX;
405 cmd_tx = CMD_DISABLE_TX;
408 ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd));
410 wl1271_error("rx %s cmd for channel %d failed",
411 enable ? "start" : "stop", channel);
415 wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
416 enable ? "start" : "stop", channel);
418 ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd));
420 wl1271_error("tx %s cmd for channel %d failed",
421 enable ? "start" : "stop", channel);
425 wl1271_debug(DEBUG_BOOT, "tx %s cmd channel %d",
426 enable ? "start" : "stop", channel);
433 int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode)
435 struct wl1271_cmd_ps_params *ps_params = NULL;
438 /* FIXME: this should be in ps.c */
439 ret = wl1271_acx_wake_up_conditions(wl);
441 wl1271_error("couldn't set wake up conditions");
445 wl1271_debug(DEBUG_CMD, "cmd set ps mode");
447 ps_params = kzalloc(sizeof(*ps_params), GFP_KERNEL);
453 ps_params->ps_mode = ps_mode;
454 ps_params->send_null_data = 1;
455 ps_params->retries = 5;
456 ps_params->hang_over_period = 128;
457 ps_params->null_data_rate = 1; /* 1 Mbps */
459 ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
462 wl1271_error("cmd set_ps_mode failed");
471 int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
474 struct cmd_read_write_memory *cmd;
477 wl1271_debug(DEBUG_CMD, "cmd read memory");
479 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
485 WARN_ON(len > MAX_READ_SIZE);
486 len = min_t(size_t, len, MAX_READ_SIZE);
491 ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd));
493 wl1271_error("read memory command failed: %d", ret);
497 /* the read command got in, we can now read the answer */
498 wl1271_spi_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd), false);
500 if (cmd->header.status != CMD_STATUS_SUCCESS)
501 wl1271_error("error in read command result: %d",
504 memcpy(answer, cmd->value, len);
511 int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
512 u8 active_scan, u8 high_prio, u8 num_channels,
516 struct wl1271_cmd_trigger_scan_to *trigger = NULL;
517 struct wl1271_cmd_scan *params = NULL;
519 u16 scan_options = 0;
524 params = kzalloc(sizeof(*params), GFP_KERNEL);
528 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
529 params->params.rx_filter_options =
530 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
533 scan_options |= WL1271_SCAN_OPT_PASSIVE;
535 scan_options |= WL1271_SCAN_OPT_PRIORITY_HIGH;
536 params->params.scan_options = scan_options;
538 params->params.num_channels = num_channels;
539 params->params.num_probe_requests = probe_requests;
540 params->params.tx_rate = cpu_to_le32(CONF_HW_BIT_RATE_2MBPS);
541 params->params.tid_trigger = 0;
542 params->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
544 for (i = 0; i < num_channels; i++) {
545 params->channels[i].min_duration =
546 cpu_to_le32(WL1271_SCAN_CHAN_MIN_DURATION);
547 params->channels[i].max_duration =
548 cpu_to_le32(WL1271_SCAN_CHAN_MAX_DURATION);
549 memset(¶ms->channels[i].bssid_lsb, 0xff, 4);
550 memset(¶ms->channels[i].bssid_msb, 0xff, 2);
551 params->channels[i].early_termination = 0;
552 params->channels[i].tx_power_att = WL1271_SCAN_CURRENT_TX_PWR;
553 params->channels[i].channel = i + 1;
557 params->params.ssid_len = len;
558 memcpy(params->params.ssid, ssid, len);
561 ret = wl1271_cmd_build_probe_req(wl, ssid, len);
563 wl1271_error("PROBE request template failed");
567 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
573 /* disable the timeout */
574 trigger->timeout = 0;
576 ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
579 wl1271_error("trigger scan to failed for hw scan");
583 wl1271_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
587 ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
589 wl1271_error("SCAN failed");
593 wl1271_spi_read(wl, wl->cmd_box_addr, params, sizeof(*params),
596 if (params->header.status != CMD_STATUS_SUCCESS) {
597 wl1271_error("Scan command error: %d",
598 params->header.status);
599 wl->scanning = false;
609 int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
610 void *buf, size_t buf_len)
612 struct wl1271_cmd_template_set *cmd;
615 wl1271_debug(DEBUG_CMD, "cmd template_set %d", template_id);
617 WARN_ON(buf_len > WL1271_CMD_TEMPL_MAX_SIZE);
618 buf_len = min_t(size_t, buf_len, WL1271_CMD_TEMPL_MAX_SIZE);
620 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
626 cmd->len = cpu_to_le16(buf_len);
627 cmd->template_type = template_id;
628 cmd->enabled_rates = wl->conf.tx.rc_conf.enabled_rates;
629 cmd->short_retry_limit = wl->conf.tx.rc_conf.short_retry_limit;
630 cmd->long_retry_limit = wl->conf.tx.rc_conf.long_retry_limit;
633 memcpy(cmd->template_data, buf, buf_len);
635 ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd));
637 wl1271_warning("cmd set_template failed: %d", ret);
648 static int wl1271_build_basic_rates(char *rates)
652 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
653 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
654 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
655 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
660 static int wl1271_build_extended_rates(char *rates)
664 rates[index++] = IEEE80211_OFDM_RATE_6MB;
665 rates[index++] = IEEE80211_OFDM_RATE_9MB;
666 rates[index++] = IEEE80211_OFDM_RATE_12MB;
667 rates[index++] = IEEE80211_OFDM_RATE_18MB;
668 rates[index++] = IEEE80211_OFDM_RATE_24MB;
669 rates[index++] = IEEE80211_OFDM_RATE_36MB;
670 rates[index++] = IEEE80211_OFDM_RATE_48MB;
671 rates[index++] = IEEE80211_OFDM_RATE_54MB;
676 int wl1271_cmd_build_null_data(struct wl1271 *wl)
678 struct wl12xx_null_data_template template;
680 if (!is_zero_ether_addr(wl->bssid)) {
681 memcpy(template.header.da, wl->bssid, ETH_ALEN);
682 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
684 memset(template.header.da, 0xff, ETH_ALEN);
685 memset(template.header.bssid, 0xff, ETH_ALEN);
688 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
689 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
690 IEEE80211_STYPE_NULLFUNC);
692 return wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, &template,
697 int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid)
699 struct wl12xx_ps_poll_template template;
701 memcpy(template.bssid, wl->bssid, ETH_ALEN);
702 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
704 /* aid in PS-Poll has its two MSBs each set to 1 */
705 template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
707 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
709 return wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, &template,
714 int wl1271_cmd_build_probe_req(struct wl1271 *wl, u8 *ssid, size_t ssid_len)
716 struct wl12xx_probe_req_template template;
717 struct wl12xx_ie_rates *rates;
721 ptr = (char *)&template;
722 size = sizeof(struct ieee80211_header);
724 memset(template.header.da, 0xff, ETH_ALEN);
725 memset(template.header.bssid, 0xff, ETH_ALEN);
726 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
727 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
731 template.ssid.header.id = WLAN_EID_SSID;
732 template.ssid.header.len = ssid_len;
733 if (ssid_len && ssid)
734 memcpy(template.ssid.ssid, ssid, ssid_len);
735 size += sizeof(struct wl12xx_ie_header) + ssid_len;
739 rates = (struct wl12xx_ie_rates *)ptr;
740 rates->header.id = WLAN_EID_SUPP_RATES;
741 rates->header.len = wl1271_build_basic_rates(rates->rates);
742 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
743 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
746 rates = (struct wl12xx_ie_rates *)ptr;
747 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
748 rates->header.len = wl1271_build_extended_rates(rates->rates);
749 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
751 wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
753 return wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
757 int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
759 struct wl1271_cmd_set_keys *cmd;
762 wl1271_debug(DEBUG_CMD, "cmd set_default_wep_key %d", id);
764 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
771 cmd->key_action = KEY_SET_ID;
772 cmd->key_type = KEY_WEP;
774 ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd));
776 wl1271_warning("cmd set_default_wep_key failed: %d", ret);
786 int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
787 u8 key_size, const u8 *key, const u8 *addr,
788 u32 tx_seq_32, u16 tx_seq_16)
790 struct wl1271_cmd_set_keys *cmd;
793 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
799 if (key_type != KEY_WEP)
800 memcpy(cmd->addr, addr, ETH_ALEN);
802 cmd->key_action = action;
803 cmd->key_size = key_size;
804 cmd->key_type = key_type;
806 cmd->ac_seq_num16[0] = tx_seq_16;
807 cmd->ac_seq_num32[0] = tx_seq_32;
809 /* we have only one SSID profile */
810 cmd->ssid_profile = 0;
814 if (key_type == KEY_TKIP) {
816 * We get the key in the following form:
817 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
818 * but the target is expecting:
819 * TKIP - RX MIC - TX MIC
821 memcpy(cmd->key, key, 16);
822 memcpy(cmd->key + 16, key + 24, 8);
823 memcpy(cmd->key + 24, key + 16, 8);
826 memcpy(cmd->key, key, key_size);
829 wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
831 ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd));
833 wl1271_warning("could not set keys");
843 int wl1271_cmd_disconnect(struct wl1271 *wl)
845 struct wl1271_cmd_disconnect *cmd;
848 wl1271_debug(DEBUG_CMD, "cmd disconnect");
850 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
856 cmd->rx_config_options = wl->rx_config;
857 cmd->rx_filter_options = wl->rx_filter;
858 /* disconnect reason is not used in immediate disconnections */
859 cmd->type = DISCONNECT_IMMEDIATE;
861 ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd));
863 wl1271_error("failed to send disconnect command");