470 lines
11 KiB
C
470 lines
11 KiB
C
// SPDX-License-Identifier: ISC
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/*
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* Copyright (c) 2014-2017 Qualcomm Atheros, Inc.
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*/
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#include "testmode.h"
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#include <net/netlink.h>
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#include <linux/firmware.h>
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#include "debug.h"
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#include "wmi.h"
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#include "hif.h"
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#include "hw.h"
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#include "core.h"
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#include "testmode_i.h"
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static const struct nla_policy ath10k_tm_policy[ATH10K_TM_ATTR_MAX + 1] = {
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[ATH10K_TM_ATTR_CMD] = { .type = NLA_U32 },
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[ATH10K_TM_ATTR_DATA] = { .type = NLA_BINARY,
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.len = ATH10K_TM_DATA_MAX_LEN },
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[ATH10K_TM_ATTR_WMI_CMDID] = { .type = NLA_U32 },
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[ATH10K_TM_ATTR_VERSION_MAJOR] = { .type = NLA_U32 },
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[ATH10K_TM_ATTR_VERSION_MINOR] = { .type = NLA_U32 },
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};
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/* Returns true if callee consumes the skb and the skb should be discarded.
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* Returns false if skb is not used. Does not sleep.
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*/
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bool ath10k_tm_event_wmi(struct ath10k *ar, u32 cmd_id, struct sk_buff *skb)
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{
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struct sk_buff *nl_skb;
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bool consumed;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
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"testmode event wmi cmd_id %d skb %pK skb->len %d\n",
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cmd_id, skb, skb->len);
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ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", skb->data, skb->len);
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spin_lock_bh(&ar->data_lock);
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if (!ar->testmode.utf_monitor) {
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consumed = false;
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goto out;
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}
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/* Only testmode.c should be handling events from utf firmware,
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* otherwise all sort of problems will arise as mac80211 operations
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* are not initialised.
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*/
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consumed = true;
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nl_skb = cfg80211_testmode_alloc_event_skb(ar->hw->wiphy,
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2 * sizeof(u32) + skb->len,
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GFP_ATOMIC);
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if (!nl_skb) {
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ath10k_warn(ar,
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"failed to allocate skb for testmode wmi event\n");
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goto out;
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}
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ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_CMD, ATH10K_TM_CMD_WMI);
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if (ret) {
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ath10k_warn(ar,
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"failed to put testmode wmi event cmd attribute: %d\n",
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ret);
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kfree_skb(nl_skb);
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goto out;
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}
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ret = nla_put_u32(nl_skb, ATH10K_TM_ATTR_WMI_CMDID, cmd_id);
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if (ret) {
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ath10k_warn(ar,
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"failed to put testmode wmi event cmd_id: %d\n",
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ret);
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kfree_skb(nl_skb);
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goto out;
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}
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ret = nla_put(nl_skb, ATH10K_TM_ATTR_DATA, skb->len, skb->data);
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if (ret) {
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ath10k_warn(ar,
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"failed to copy skb to testmode wmi event: %d\n",
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ret);
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kfree_skb(nl_skb);
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goto out;
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}
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cfg80211_testmode_event(nl_skb, GFP_ATOMIC);
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out:
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spin_unlock_bh(&ar->data_lock);
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return consumed;
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}
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static int ath10k_tm_cmd_get_version(struct ath10k *ar, struct nlattr *tb[])
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{
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struct sk_buff *skb;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
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"testmode cmd get version_major %d version_minor %d\n",
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ATH10K_TESTMODE_VERSION_MAJOR,
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ATH10K_TESTMODE_VERSION_MINOR);
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skb = cfg80211_testmode_alloc_reply_skb(ar->hw->wiphy,
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nla_total_size(sizeof(u32)));
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if (!skb)
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return -ENOMEM;
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ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MAJOR,
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ATH10K_TESTMODE_VERSION_MAJOR);
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if (ret) {
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kfree_skb(skb);
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return ret;
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}
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ret = nla_put_u32(skb, ATH10K_TM_ATTR_VERSION_MINOR,
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ATH10K_TESTMODE_VERSION_MINOR);
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if (ret) {
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kfree_skb(skb);
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return ret;
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}
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ret = nla_put_u32(skb, ATH10K_TM_ATTR_WMI_OP_VERSION,
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ar->normal_mode_fw.fw_file.wmi_op_version);
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if (ret) {
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kfree_skb(skb);
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return ret;
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}
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return cfg80211_testmode_reply(skb);
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}
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static int ath10k_tm_fetch_utf_firmware_api_1(struct ath10k *ar,
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struct ath10k_fw_file *fw_file)
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{
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char filename[100];
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int ret;
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snprintf(filename, sizeof(filename), "%s/%s",
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ar->hw_params.fw.dir, ATH10K_FW_UTF_FILE);
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/* load utf firmware image */
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ret = firmware_request_nowarn(&fw_file->firmware, filename, ar->dev);
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode fw request '%s': %d\n",
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filename, ret);
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if (ret) {
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ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n",
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filename, ret);
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return ret;
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}
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/* We didn't find FW UTF API 1 ("utf.bin") does not advertise
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* firmware features. Do an ugly hack where we force the firmware
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* features to match with 10.1 branch so that wmi.c will use the
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* correct WMI interface.
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*/
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fw_file->wmi_op_version = ATH10K_FW_WMI_OP_VERSION_10_1;
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fw_file->htt_op_version = ATH10K_FW_HTT_OP_VERSION_10_1;
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fw_file->firmware_data = fw_file->firmware->data;
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fw_file->firmware_len = fw_file->firmware->size;
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return 0;
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}
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static int ath10k_tm_fetch_firmware(struct ath10k *ar)
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{
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struct ath10k_fw_components *utf_mode_fw;
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int ret;
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char fw_name[100];
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int fw_api2 = 2;
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switch (ar->hif.bus) {
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case ATH10K_BUS_SDIO:
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case ATH10K_BUS_USB:
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scnprintf(fw_name, sizeof(fw_name), "%s-%s-%d.bin",
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ATH10K_FW_UTF_FILE_BASE, ath10k_bus_str(ar->hif.bus),
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fw_api2);
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break;
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default:
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scnprintf(fw_name, sizeof(fw_name), "%s-%d.bin",
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ATH10K_FW_UTF_FILE_BASE, fw_api2);
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break;
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}
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ret = ath10k_core_fetch_firmware_api_n(ar, fw_name,
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&ar->testmode.utf_mode_fw.fw_file);
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if (ret == 0) {
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using fw utf api 2");
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goto out;
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}
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ret = ath10k_tm_fetch_utf_firmware_api_1(ar, &ar->testmode.utf_mode_fw.fw_file);
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if (ret) {
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ath10k_err(ar, "failed to fetch utf firmware binary: %d", ret);
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return ret;
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}
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using utf api 1");
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out:
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utf_mode_fw = &ar->testmode.utf_mode_fw;
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/* Use the same board data file as the normal firmware uses (but
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* it's still "owned" by normal_mode_fw so we shouldn't free it.
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*/
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utf_mode_fw->board_data = ar->normal_mode_fw.board_data;
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utf_mode_fw->board_len = ar->normal_mode_fw.board_len;
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if (!utf_mode_fw->fw_file.otp_data) {
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ath10k_info(ar, "utf.bin didn't contain otp binary, taking it from the normal mode firmware");
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utf_mode_fw->fw_file.otp_data = ar->normal_mode_fw.fw_file.otp_data;
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utf_mode_fw->fw_file.otp_len = ar->normal_mode_fw.fw_file.otp_len;
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}
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return 0;
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}
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static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
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{
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const char *ver;
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf start\n");
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mutex_lock(&ar->conf_mutex);
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if (ar->state == ATH10K_STATE_UTF) {
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ret = -EALREADY;
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goto err;
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}
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/* start utf only when the driver is not in use */
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if (ar->state != ATH10K_STATE_OFF) {
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ret = -EBUSY;
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goto err;
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}
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if (WARN_ON(ar->testmode.utf_mode_fw.fw_file.firmware != NULL)) {
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/* utf image is already downloaded, it shouldn't be */
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ret = -EEXIST;
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goto err;
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}
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ret = ath10k_tm_fetch_firmware(ar);
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if (ret) {
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ath10k_err(ar, "failed to fetch UTF firmware: %d", ret);
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goto err;
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}
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if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
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ar->testmode.utf_mode_fw.fw_file.codeswap_len) {
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ret = ath10k_swap_code_seg_init(ar,
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&ar->testmode.utf_mode_fw.fw_file);
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if (ret) {
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ath10k_warn(ar,
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"failed to init utf code swap segment: %d\n",
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ret);
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goto err_release_utf_mode_fw;
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}
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}
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spin_lock_bh(&ar->data_lock);
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ar->testmode.utf_monitor = true;
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spin_unlock_bh(&ar->data_lock);
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode wmi version %d\n",
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ar->testmode.utf_mode_fw.fw_file.wmi_op_version);
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ret = ath10k_hif_power_up(ar, ATH10K_FIRMWARE_MODE_UTF);
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if (ret) {
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ath10k_err(ar, "failed to power up hif (testmode): %d\n", ret);
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ar->state = ATH10K_STATE_OFF;
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goto err_release_utf_mode_fw;
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}
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ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_UTF,
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&ar->testmode.utf_mode_fw);
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if (ret) {
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ath10k_err(ar, "failed to start core (testmode): %d\n", ret);
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ar->state = ATH10K_STATE_OFF;
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goto err_power_down;
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}
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ar->state = ATH10K_STATE_UTF;
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if (strlen(ar->testmode.utf_mode_fw.fw_file.fw_version) > 0)
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ver = ar->testmode.utf_mode_fw.fw_file.fw_version;
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else
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ver = "API 1";
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ath10k_info(ar, "UTF firmware %s started\n", ver);
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mutex_unlock(&ar->conf_mutex);
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return 0;
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err_power_down:
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ath10k_hif_power_down(ar);
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err_release_utf_mode_fw:
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if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
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ar->testmode.utf_mode_fw.fw_file.codeswap_len)
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ath10k_swap_code_seg_release(ar,
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&ar->testmode.utf_mode_fw.fw_file);
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release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
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ar->testmode.utf_mode_fw.fw_file.firmware = NULL;
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err:
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mutex_unlock(&ar->conf_mutex);
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return ret;
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}
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static void __ath10k_tm_cmd_utf_stop(struct ath10k *ar)
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{
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lockdep_assert_held(&ar->conf_mutex);
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ath10k_core_stop(ar);
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ath10k_hif_power_down(ar);
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spin_lock_bh(&ar->data_lock);
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ar->testmode.utf_monitor = false;
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spin_unlock_bh(&ar->data_lock);
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if (ar->testmode.utf_mode_fw.fw_file.codeswap_data &&
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ar->testmode.utf_mode_fw.fw_file.codeswap_len)
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ath10k_swap_code_seg_release(ar,
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&ar->testmode.utf_mode_fw.fw_file);
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release_firmware(ar->testmode.utf_mode_fw.fw_file.firmware);
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ar->testmode.utf_mode_fw.fw_file.firmware = NULL;
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ar->state = ATH10K_STATE_OFF;
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}
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static int ath10k_tm_cmd_utf_stop(struct ath10k *ar, struct nlattr *tb[])
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{
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int ret;
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf stop\n");
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mutex_lock(&ar->conf_mutex);
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if (ar->state != ATH10K_STATE_UTF) {
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ret = -ENETDOWN;
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goto out;
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}
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__ath10k_tm_cmd_utf_stop(ar);
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ret = 0;
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ath10k_info(ar, "UTF firmware stopped\n");
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out:
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mutex_unlock(&ar->conf_mutex);
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return ret;
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}
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static int ath10k_tm_cmd_wmi(struct ath10k *ar, struct nlattr *tb[])
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{
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struct sk_buff *skb;
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int ret, buf_len;
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u32 cmd_id;
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void *buf;
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mutex_lock(&ar->conf_mutex);
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if (ar->state != ATH10K_STATE_UTF) {
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ret = -ENETDOWN;
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goto out;
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}
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if (!tb[ATH10K_TM_ATTR_DATA]) {
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ret = -EINVAL;
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goto out;
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}
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if (!tb[ATH10K_TM_ATTR_WMI_CMDID]) {
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ret = -EINVAL;
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goto out;
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}
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buf = nla_data(tb[ATH10K_TM_ATTR_DATA]);
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buf_len = nla_len(tb[ATH10K_TM_ATTR_DATA]);
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cmd_id = nla_get_u32(tb[ATH10K_TM_ATTR_WMI_CMDID]);
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ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
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"testmode cmd wmi cmd_id %d buf %pK buf_len %d\n",
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cmd_id, buf, buf_len);
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ath10k_dbg_dump(ar, ATH10K_DBG_TESTMODE, NULL, "", buf, buf_len);
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skb = ath10k_wmi_alloc_skb(ar, buf_len);
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if (!skb) {
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ret = -ENOMEM;
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goto out;
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}
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memcpy(skb->data, buf, buf_len);
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ret = ath10k_wmi_cmd_send(ar, skb, cmd_id);
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if (ret) {
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ath10k_warn(ar, "failed to transmit wmi command (testmode): %d\n",
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ret);
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goto out;
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}
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ret = 0;
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out:
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mutex_unlock(&ar->conf_mutex);
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return ret;
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}
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int ath10k_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
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void *data, int len)
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{
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struct ath10k *ar = hw->priv;
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struct nlattr *tb[ATH10K_TM_ATTR_MAX + 1];
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int ret;
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ret = nla_parse_deprecated(tb, ATH10K_TM_ATTR_MAX, data, len,
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ath10k_tm_policy, NULL);
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if (ret)
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return ret;
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if (!tb[ATH10K_TM_ATTR_CMD])
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return -EINVAL;
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switch (nla_get_u32(tb[ATH10K_TM_ATTR_CMD])) {
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case ATH10K_TM_CMD_GET_VERSION:
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return ath10k_tm_cmd_get_version(ar, tb);
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case ATH10K_TM_CMD_UTF_START:
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return ath10k_tm_cmd_utf_start(ar, tb);
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case ATH10K_TM_CMD_UTF_STOP:
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return ath10k_tm_cmd_utf_stop(ar, tb);
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case ATH10K_TM_CMD_WMI:
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return ath10k_tm_cmd_wmi(ar, tb);
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default:
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return -EOPNOTSUPP;
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}
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}
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void ath10k_testmode_destroy(struct ath10k *ar)
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{
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mutex_lock(&ar->conf_mutex);
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if (ar->state != ATH10K_STATE_UTF) {
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/* utf firmware is not running, nothing to do */
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goto out;
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}
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__ath10k_tm_cmd_utf_stop(ar);
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out:
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mutex_unlock(&ar->conf_mutex);
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}
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