/*
* Copyright (c) 2014-2017 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 "core.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 %pK 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;
}
ret = nla_put_u32(skb, ATH10K_TM_ATTR_WMI_OP_VERSION,
ar->normal_mode_fw.fw_file.wmi_op_version);
if (ret) {
kfree_skb(skb);
return ret;
}
return cfg80211_testmode_reply(skb);
}
static int ath10k_tm_fetch_utf_firmware_api_1(struct ath10k *ar,
struct ath10k_fw_file *fw_file)
{
char filename[100];
int ret;
snprintf(filename, sizeof(filename), "%s/%s",
ar->hw_params.fw.dir, ATH10K_FW_UTF_FILE);
/* load utf firmware image */
ret = firmware_request_nowarn(&fw_file->firmware, filename, ar->dev);
ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode fw request '%s': %d\n",
filename, ret);
if (ret) {
ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n",
filename, ret);
return ret;
}
/* We didn't find FW UTF API 1 ("utf.bin") does not advertise
* firmware features. Do an ugly hack where we force the firmware
* features to match with 10.1 branch so that wmi.c will use the
* correct WMI interface.
*/
fw_file->wmi_op_version = ATH10K_FW_WMI_OP_VERSION_10_1;
fw_file->htt_op_version = ATH10K_FW_HTT_OP_VERSION_10_1;
fw_file->firmware_data = fw_file->firmware->data;
fw_file->firmware_len = fw_file->firmware->size;
return 0;
}
static int ath10k_tm_fetch_firmware(struct ath10k *ar)
{
struct ath10k_fw_components *utf_mode_fw;
int ret;
ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_UTF_API2_FILE,
&ar->testmode.utf_mode_fw.fw_file);
if (ret == 0) {
ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using fw utf api 2");
goto out;
}
ret = ath10k_tm_fetch_utf_firmware_api_1(ar, &ar->testmode.utf_mode_fw.fw_file);
if (ret) {
ath10k_err(ar, "failed to fetch utf firmware binary: %d", ret);
return ret;
}
ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using utf api 1");
out:
utf_mode_fw = &ar->testmode.utf_mode_fw;
/* Use the same board data file as the normal firmware uses (but
* it's still "owned" by normal_mode_fw so we shouldn't free it.
*/
utf_mode_fw->board_data = ar->normal_mode_fw.board_data;
utf_mode_fw->board_len = ar->normal_mode_fw.board_len;
if (!utf_mode_fw->fw_file.otp_data) {
ath10k_info(ar, "utf.bin didn't contain otp binary, taking it from the normal mode firmware");
utf_mode_fw->fw_file.otp_data = ar->normal_mode_fw.fw_file.otp_data;
utf_mode_fw->fw_file.otp_len = ar->normal_mode_fw.fw_file.otp_len;
}
return 0;
}
static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
{
const char *ver;
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_mode_fw.fw_file.firmware != NULL)) {
/* utf image is already downloaded, it shouldn't be */
ret = -EEXIST;
goto err;
}
ret = ath10k_tm_fetch_firmware(ar);
if (ret) {
ath10k_err(ar, "failed to fetch UTF firmware: %d", ret);
goto err;
}
if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
ar->testmode.utf_mode_fw.fw_file.codeswap_len) {
ret = ath10k_swap_code_seg_init(ar,
&ar->testmode.utf_mode_fw.fw_file);
if (ret) {
ath10k_warn(ar,
"failed to init utf code swap segment: %d\n",
ret);
goto err_release_utf_mode_fw;
}
}
spin_lock_bh(&ar->data_lock);
ar->testmode.utf_monitor = true;
spin_unlock_bh(&ar->data_lock);
ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode wmi version %d\n",
ar->testmode.utf_mode_fw.fw_file.wmi_op_version);
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_release_utf_mode_fw;
}
ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_UTF,
&ar->testmode.utf_mode_fw);
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;
if (strlen(ar->testmode.utf_mode_fw.fw_file.fw_version) > 0)
ver = ar->testmode.utf_mode_fw.fw_file.fw_version;
else
ver = "API 1";
ath10k_info(ar, "UTF firmware %s started\n", ver);
mutex_unlock(&ar->conf_mutex);
return 0;
err_power_down:
ath10k_hif_power_down(ar);
err_release_utf_mode_fw:
if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
ar->testmode.utf_mode_fw.fw_file.codeswap_len)
ath10k_swap_code_seg_release(ar,
&ar->testmode.utf_mode_fw.fw_file);
release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
ar->testmode.utf_mode_fw.fw_file.firmware = 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);
if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
ar->testmode.utf_mode_fw.fw_file.codeswap_len)
ath10k_swap_code_seg_release(ar,
&ar->testmode.utf_mode_fw.fw_file);
release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
ar->testmode.utf_mode_fw.fw_file.firmware = 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 %pK 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,
NULL);
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);
}
