diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/testmode.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/testmode.c | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/testmode.c b/drivers/net/wireless/ath/ath10k/testmode.c new file mode 100644 index 000000000000..483db9cb8c96 --- /dev/null +++ b/drivers/net/wireless/ath/ath10k/testmode.c @@ -0,0 +1,382 @@ +/* + * Copyright (c) 2014 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "testmode.h" + +#include <net/netlink.h> +#include <linux/firmware.h> + +#include "debug.h" +#include "wmi.h" +#include "hif.h" +#include "hw.h" + +#include "testmode_i.h" + +static const struct nla_policy ath10k_tm_policy[ATH10K_TM_ATTR_MAX + 1] = { + [ATH10K_TM_ATTR_CMD] = { .type = NLA_U32 }, + [ATH10K_TM_ATTR_DATA] = { .type = NLA_BINARY, + .len = ATH10K_TM_DATA_MAX_LEN }, + [ATH10K_TM_ATTR_WMI_CMDID] = { .type = NLA_U32 }, + [ATH10K_TM_ATTR_VERSION_MAJOR] = { .type = NLA_U32 }, + [ATH10K_TM_ATTR_VERSION_MINOR] = { .type = NLA_U32 }, +}; + +/* Returns true if callee consumes the skb and the skb should be discarded. + * Returns false if skb is not used. Does not sleep. + */ +bool ath10k_tm_event_wmi(struct ath10k *ar, u32 cmd_id, struct sk_buff *skb) +{ + struct sk_buff *nl_skb; + bool consumed; + int ret; + + ath10k_dbg(ar, ATH10K_DBG_TESTMODE, + "testmode event wmi cmd_id %d skb %p skb->len %d\n", + cmd_id, skb, skb->len); + + ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", skb->data, skb->len); + + spin_lock_bh(&ar->data_lock); + + if (!ar->testmode.utf_monitor) { + consumed = false; + goto out; + } + + /* Only testmode.c should be handling events from utf firmware, + * otherwise all sort of problems will arise as mac80211 operations + * are not initialised. + */ + consumed = true; + + nl_skb = cfg80211_testmode_alloc_event_skb(ar->hw->wiphy, + 2 * sizeof(u32) + skb->len, + GFP_ATOMIC); + if (!nl_skb) { + ath10k_warn(ar, + "failed to allocate skb for testmode wmi event\n"); + goto out; + } + + ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_CMD, ATH10K_TM_CMD_WMI); + if (ret) { + ath10k_warn(ar, + "failed to to put testmode wmi event cmd attribute: %d\n", + ret); + kfree_skb(nl_skb); + goto out; + } + + ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_WMI_CMDID, cmd_id); + if (ret) { + ath10k_warn(ar, + "failed to to put testmode wmi even cmd_id: %d\n", + ret); + kfree_skb(nl_skb); + goto out; + } + + ret = nla_put(nl_skb, ATH10K_TM_ATTR_DATA, skb->len, skb->data); + if (ret) { + ath10k_warn(ar, + "failed to copy skb to testmode wmi event: %d\n", + ret); + kfree_skb(nl_skb); + goto out; + } + + cfg80211_testmode_event(nl_skb, GFP_ATOMIC); + +out: + spin_unlock_bh(&ar->data_lock); + + return consumed; +} + +static int ath10k_tm_cmd_get_version(struct ath10k *ar, struct nlattr *tb[]) +{ + struct sk_buff *skb; + int ret; + + ath10k_dbg(ar, ATH10K_DBG_TESTMODE, + "testmode cmd get version_major %d version_minor %d\n", + ATH10K_TESTMODE_VERSION_MAJOR, + ATH10K_TESTMODE_VERSION_MINOR); + + skb = cfg80211_testmode_alloc_reply_skb(ar->hw->wiphy, + nla_total_size(sizeof(u32))); + if (!skb) + return -ENOMEM; + + ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MAJOR, + ATH10K_TESTMODE_VERSION_MAJOR); + if (ret) { + kfree_skb(skb); + return ret; + } + + ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MINOR, + ATH10K_TESTMODE_VERSION_MINOR); + if (ret) { + kfree_skb(skb); + return ret; + } + + return cfg80211_testmode_reply(skb); +} + +static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[]) +{ + char filename[100]; + int ret; + + ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf start\n"); + + mutex_lock(&ar->conf_mutex); + + if (ar->state == ATH10K_STATE_UTF) { + ret = -EALREADY; + goto err; + } + + /* start utf only when the driver is not in use */ + if (ar->state != ATH10K_STATE_OFF) { + ret = -EBUSY; + goto err; + } + + if (WARN_ON(ar->testmode.utf != NULL)) { + /* utf image is already downloaded, it shouldn't be */ + ret = -EEXIST; + goto err; + } + + snprintf(filename, sizeof(filename), "%s/%s", + ar->hw_params.fw.dir, ATH10K_FW_UTF_FILE); + + /* load utf firmware image */ + ret = request_firmware(&ar->testmode.utf, filename, ar->dev); + if (ret) { + ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n", + filename, ret); + goto err; + } + + spin_lock_bh(&ar->data_lock); + + ar->testmode.utf_monitor = true; + + spin_unlock_bh(&ar->data_lock); + + BUILD_BUG_ON(sizeof(ar->fw_features) != + sizeof(ar->testmode.orig_fw_features)); + + memcpy(ar->testmode.orig_fw_features, ar->fw_features, + sizeof(ar->fw_features)); + + /* utf.bin firmware image does not advertise firmware features. Do + * an ugly hack where we force the firmware features so that wmi.c + * will use the correct WMI interface. + */ + memset(ar->fw_features, 0, sizeof(ar->fw_features)); + __set_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features); + + ret = ath10k_hif_power_up(ar); + if (ret) { + ath10k_err(ar, "failed to power up hif (testmode): %d\n", ret); + ar->state = ATH10K_STATE_OFF; + goto err_fw_features; + } + + ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_UTF); + if (ret) { + ath10k_err(ar, "failed to start core (testmode): %d\n", ret); + ar->state = ATH10K_STATE_OFF; + goto err_power_down; + } + + ar->state = ATH10K_STATE_UTF; + + ath10k_info(ar, "UTF firmware started\n"); + + mutex_unlock(&ar->conf_mutex); + + return 0; + +err_power_down: + ath10k_hif_power_down(ar); + +err_fw_features: + /* return the original firmware features */ + memcpy(ar->fw_features, ar->testmode.orig_fw_features, + sizeof(ar->fw_features)); + + release_firmware(ar->testmode.utf); + ar->testmode.utf = NULL; + +err: + mutex_unlock(&ar->conf_mutex); + + return ret; +} + +static void __ath10k_tm_cmd_utf_stop(struct ath10k *ar) +{ + lockdep_assert_held(&ar->conf_mutex); + + ath10k_core_stop(ar); + ath10k_hif_power_down(ar); + + spin_lock_bh(&ar->data_lock); + + ar->testmode.utf_monitor = false; + + spin_unlock_bh(&ar->data_lock); + + /* return the original firmware features */ + memcpy(ar->fw_features, ar->testmode.orig_fw_features, + sizeof(ar->fw_features)); + + release_firmware(ar->testmode.utf); + ar->testmode.utf = NULL; + + ar->state = ATH10K_STATE_OFF; +} + +static int ath10k_tm_cmd_utf_stop(struct ath10k *ar, struct nlattr *tb[]) +{ + int ret; + + ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf stop\n"); + + mutex_lock(&ar->conf_mutex); + + if (ar->state != ATH10K_STATE_UTF) { + ret = -ENETDOWN; + goto out; + } + + __ath10k_tm_cmd_utf_stop(ar); + + ret = 0; + + ath10k_info(ar, "UTF firmware stopped\n"); + +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath10k_tm_cmd_wmi(struct ath10k *ar, struct nlattr *tb[]) +{ + struct sk_buff *skb; + int ret, buf_len; + u32 cmd_id; + void *buf; + + mutex_lock(&ar->conf_mutex); + + if (ar->state != ATH10K_STATE_UTF) { + ret = -ENETDOWN; + goto out; + } + + if (!tb[ATH10K_TM_ATTR_DATA]) { + ret = -EINVAL; + goto out; + } + + if (!tb[ATH10K_TM_ATTR_WMI_CMDID]) { + ret = -EINVAL; + goto out; + } + + buf = nla_data(tb[ATH10K_TM_ATTR_DATA]); + buf_len = nla_len(tb[ATH10K_TM_ATTR_DATA]); + cmd_id = nla_get_u32(tb[ATH10K_TM_ATTR_WMI_CMDID]); + + ath10k_dbg(ar, ATH10K_DBG_TESTMODE, + "testmode cmd wmi cmd_id %d buf %p buf_len %d\n", + cmd_id, buf, buf_len); + + ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", buf, buf_len); + + skb = ath10k_wmi_alloc_skb(ar, buf_len); + if (!skb) { + ret = -ENOMEM; + goto out; + } + + memcpy(skb->data, buf, buf_len); + + ret = ath10k_wmi_cmd_send(ar, skb, cmd_id); + if (ret) { + ath10k_warn(ar, "failed to transmit wmi command (testmode): %d\n", + ret); + goto out; + } + + ret = 0; + +out: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +int ath10k_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + void *data, int len) +{ + struct ath10k *ar = hw->priv; + struct nlattr *tb[ATH10K_TM_ATTR_MAX + 1]; + int ret; + + ret = nla_parse(tb, ATH10K_TM_ATTR_MAX, data, len, + ath10k_tm_policy); + if (ret) + return ret; + + if (!tb[ATH10K_TM_ATTR_CMD]) + return -EINVAL; + + switch (nla_get_u32(tb[ATH10K_TM_ATTR_CMD])) { + case ATH10K_TM_CMD_GET_VERSION: + return ath10k_tm_cmd_get_version(ar, tb); + case ATH10K_TM_CMD_UTF_START: + return ath10k_tm_cmd_utf_start(ar, tb); + case ATH10K_TM_CMD_UTF_STOP: + return ath10k_tm_cmd_utf_stop(ar, tb); + case ATH10K_TM_CMD_WMI: + return ath10k_tm_cmd_wmi(ar, tb); + default: + return -EOPNOTSUPP; + } +} + +void ath10k_testmode_destroy(struct ath10k *ar) +{ + mutex_lock(&ar->conf_mutex); + + if (ar->state != ATH10K_STATE_UTF) { + /* utf firmware is not running, nothing to do */ + goto out; + } + + __ath10k_tm_cmd_utf_stop(ar); + +out: + mutex_unlock(&ar->conf_mutex); +} |