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OpenCloudOS-Kernel/drivers/net/wireless/ath/ath10k/core.c

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/*
* Copyright (c) 2005-2011 Atheros Communications Inc.
* Copyright (c) 2011-2013 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 <linux/module.h>
#include <linux/firmware.h>
#include "core.h"
#include "mac.h"
#include "htc.h"
#include "hif.h"
#include "wmi.h"
#include "bmi.h"
#include "debug.h"
#include "htt.h"
unsigned int ath10k_debug_mask;
static bool uart_print;
static unsigned int ath10k_p2p;
module_param_named(debug_mask, ath10k_debug_mask, uint, 0644);
module_param(uart_print, bool, 0644);
module_param_named(p2p, ath10k_p2p, uint, 0644);
MODULE_PARM_DESC(debug_mask, "Debugging mask");
MODULE_PARM_DESC(uart_print, "Uart target debugging");
MODULE_PARM_DESC(p2p, "Enable ath10k P2P support");
static const struct ath10k_hw_params ath10k_hw_params_list[] = {
{
.id = QCA988X_HW_2_0_VERSION,
.name = "qca988x hw2.0",
.patch_load_addr = QCA988X_HW_2_0_PATCH_LOAD_ADDR,
.fw = {
.dir = QCA988X_HW_2_0_FW_DIR,
.fw = QCA988X_HW_2_0_FW_FILE,
.otp = QCA988X_HW_2_0_OTP_FILE,
.board = QCA988X_HW_2_0_BOARD_DATA_FILE,
},
},
};
static void ath10k_send_suspend_complete(struct ath10k *ar)
{
ath10k_dbg(ATH10K_DBG_BOOT, "boot suspend complete\n");
complete(&ar->target_suspend);
}
static int ath10k_init_connect_htc(struct ath10k *ar)
{
int status;
status = ath10k_wmi_connect_htc_service(ar);
if (status)
goto conn_fail;
/* Start HTC */
status = ath10k_htc_start(&ar->htc);
if (status)
goto conn_fail;
/* Wait for WMI event to be ready */
status = ath10k_wmi_wait_for_service_ready(ar);
if (status <= 0) {
ath10k_warn("wmi service ready event not received");
status = -ETIMEDOUT;
goto timeout;
}
ath10k_dbg(ATH10K_DBG_BOOT, "boot wmi ready\n");
return 0;
timeout:
ath10k_htc_stop(&ar->htc);
conn_fail:
return status;
}
static int ath10k_init_configure_target(struct ath10k *ar)
{
u32 param_host;
int ret;
/* tell target which HTC version it is used*/
ret = ath10k_bmi_write32(ar, hi_app_host_interest,
HTC_PROTOCOL_VERSION);
if (ret) {
ath10k_err("settings HTC version failed\n");
return ret;
}
/* set the firmware mode to STA/IBSS/AP */
ret = ath10k_bmi_read32(ar, hi_option_flag, &param_host);
if (ret) {
ath10k_err("setting firmware mode (1/2) failed\n");
return ret;
}
/* TODO following parameters need to be re-visited. */
/* num_device */
param_host |= (1 << HI_OPTION_NUM_DEV_SHIFT);
/* Firmware mode */
/* FIXME: Why FW_MODE_AP ??.*/
param_host |= (HI_OPTION_FW_MODE_AP << HI_OPTION_FW_MODE_SHIFT);
/* mac_addr_method */
param_host |= (1 << HI_OPTION_MAC_ADDR_METHOD_SHIFT);
/* firmware_bridge */
param_host |= (0 << HI_OPTION_FW_BRIDGE_SHIFT);
/* fwsubmode */
param_host |= (0 << HI_OPTION_FW_SUBMODE_SHIFT);
ret = ath10k_bmi_write32(ar, hi_option_flag, param_host);
if (ret) {
ath10k_err("setting firmware mode (2/2) failed\n");
return ret;
}
/* We do all byte-swapping on the host */
ret = ath10k_bmi_write32(ar, hi_be, 0);
if (ret) {
ath10k_err("setting host CPU BE mode failed\n");
return ret;
}
/* FW descriptor/Data swap flags */
ret = ath10k_bmi_write32(ar, hi_fw_swap, 0);
if (ret) {
ath10k_err("setting FW data/desc swap flags failed\n");
return ret;
}
return 0;
}
static const struct firmware *ath10k_fetch_fw_file(struct ath10k *ar,
const char *dir,
const char *file)
{
char filename[100];
const struct firmware *fw;
int ret;
if (file == NULL)
return ERR_PTR(-ENOENT);
if (dir == NULL)
dir = ".";
snprintf(filename, sizeof(filename), "%s/%s", dir, file);
ret = request_firmware(&fw, filename, ar->dev);
if (ret)
return ERR_PTR(ret);
return fw;
}
static int ath10k_push_board_ext_data(struct ath10k *ar)
{
u32 board_data_size = QCA988X_BOARD_DATA_SZ;
u32 board_ext_data_size = QCA988X_BOARD_EXT_DATA_SZ;
u32 board_ext_data_addr;
int ret;
ret = ath10k_bmi_read32(ar, hi_board_ext_data, &board_ext_data_addr);
if (ret) {
ath10k_err("could not read board ext data addr (%d)\n", ret);
return ret;
}
ath10k_dbg(ATH10K_DBG_BOOT,
"boot push board extended data addr 0x%x\n",
board_ext_data_addr);
if (board_ext_data_addr == 0)
return 0;
if (ar->board_len != (board_data_size + board_ext_data_size)) {
ath10k_err("invalid board (ext) data sizes %zu != %d+%d\n",
ar->board_len, board_data_size, board_ext_data_size);
return -EINVAL;
}
ret = ath10k_bmi_write_memory(ar, board_ext_data_addr,
ar->board_data + board_data_size,
board_ext_data_size);
if (ret) {
ath10k_err("could not write board ext data (%d)\n", ret);
return ret;
}
ret = ath10k_bmi_write32(ar, hi_board_ext_data_config,
(board_ext_data_size << 16) | 1);
if (ret) {
ath10k_err("could not write board ext data bit (%d)\n", ret);
return ret;
}
return 0;
}
static int ath10k_download_board_data(struct ath10k *ar)
{
u32 board_data_size = QCA988X_BOARD_DATA_SZ;
u32 address;
int ret;
ret = ath10k_push_board_ext_data(ar);
if (ret) {
ath10k_err("could not push board ext data (%d)\n", ret);
goto exit;
}
ret = ath10k_bmi_read32(ar, hi_board_data, &address);
if (ret) {
ath10k_err("could not read board data addr (%d)\n", ret);
goto exit;
}
ret = ath10k_bmi_write_memory(ar, address, ar->board_data,
min_t(u32, board_data_size,
ar->board_len));
if (ret) {
ath10k_err("could not write board data (%d)\n", ret);
goto exit;
}
ret = ath10k_bmi_write32(ar, hi_board_data_initialized, 1);
if (ret) {
ath10k_err("could not write board data bit (%d)\n", ret);
goto exit;
}
exit:
return ret;
}
static int ath10k_download_and_run_otp(struct ath10k *ar)
{
u32 address = ar->hw_params.patch_load_addr;
u32 exec_param;
int ret;
/* OTP is optional */
if (!ar->otp_data || !ar->otp_len)
return 0;
ret = ath10k_bmi_fast_download(ar, address, ar->otp_data, ar->otp_len);
if (ret) {
ath10k_err("could not write otp (%d)\n", ret);
goto exit;
}
exec_param = 0;
ret = ath10k_bmi_execute(ar, address, &exec_param);
if (ret) {
ath10k_err("could not execute otp (%d)\n", ret);
goto exit;
}
exit:
return ret;
}
static int ath10k_download_fw(struct ath10k *ar)
{
u32 address;
int ret;
address = ar->hw_params.patch_load_addr;
ret = ath10k_bmi_fast_download(ar, address, ar->firmware_data,
ar->firmware_len);
if (ret) {
ath10k_err("could not write fw (%d)\n", ret);
goto exit;
}
exit:
return ret;
}
static void ath10k_core_free_firmware_files(struct ath10k *ar)
{
if (ar->board && !IS_ERR(ar->board))
release_firmware(ar->board);
if (ar->otp && !IS_ERR(ar->otp))
release_firmware(ar->otp);
if (ar->firmware && !IS_ERR(ar->firmware))
release_firmware(ar->firmware);
ar->board = NULL;
ar->board_data = NULL;
ar->board_len = 0;
ar->otp = NULL;
ar->otp_data = NULL;
ar->otp_len = 0;
ar->firmware = NULL;
ar->firmware_data = NULL;
ar->firmware_len = 0;
}
static int ath10k_core_fetch_firmware_api_1(struct ath10k *ar)
{
int ret = 0;
if (ar->hw_params.fw.fw == NULL) {
ath10k_err("firmware file not defined\n");
return -EINVAL;
}
if (ar->hw_params.fw.board == NULL) {
ath10k_err("board data file not defined");
return -EINVAL;
}
ar->board = ath10k_fetch_fw_file(ar,
ar->hw_params.fw.dir,
ar->hw_params.fw.board);
if (IS_ERR(ar->board)) {
ret = PTR_ERR(ar->board);
ath10k_err("could not fetch board data (%d)\n", ret);
goto err;
}
ar->board_data = ar->board->data;
ar->board_len = ar->board->size;
ar->firmware = ath10k_fetch_fw_file(ar,
ar->hw_params.fw.dir,
ar->hw_params.fw.fw);
if (IS_ERR(ar->firmware)) {
ret = PTR_ERR(ar->firmware);
ath10k_err("could not fetch firmware (%d)\n", ret);
goto err;
}
ar->firmware_data = ar->firmware->data;
ar->firmware_len = ar->firmware->size;
/* OTP may be undefined. If so, don't fetch it at all */
if (ar->hw_params.fw.otp == NULL)
return 0;
ar->otp = ath10k_fetch_fw_file(ar,
ar->hw_params.fw.dir,
ar->hw_params.fw.otp);
if (IS_ERR(ar->otp)) {
ret = PTR_ERR(ar->otp);
ath10k_err("could not fetch otp (%d)\n", ret);
goto err;
}
ar->otp_data = ar->otp->data;
ar->otp_len = ar->otp->size;
return 0;
err:
ath10k_core_free_firmware_files(ar);
return ret;
}
static int ath10k_core_fetch_firmware_api_n(struct ath10k *ar, const char *name)
{
size_t magic_len, len, ie_len;
int ie_id, i, index, bit, ret;
struct ath10k_fw_ie *hdr;
const u8 *data;
__le32 *timestamp;
/* first fetch the firmware file (firmware-*.bin) */
ar->firmware = ath10k_fetch_fw_file(ar, ar->hw_params.fw.dir, name);
if (IS_ERR(ar->firmware)) {
ath10k_err("Could not fetch firmware file '%s': %ld\n",
name, PTR_ERR(ar->firmware));
return PTR_ERR(ar->firmware);
}
data = ar->firmware->data;
len = ar->firmware->size;
/* magic also includes the null byte, check that as well */
magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1;
if (len < magic_len) {
ath10k_err("firmware image too small to contain magic: %zu\n",
len);
ret = -EINVAL;
goto err;
}
if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) {
ath10k_err("Invalid firmware magic\n");
ret = -EINVAL;
goto err;
}
/* jump over the padding */
magic_len = ALIGN(magic_len, 4);
len -= magic_len;
data += magic_len;
/* loop elements */
while (len > sizeof(struct ath10k_fw_ie)) {
hdr = (struct ath10k_fw_ie *)data;
ie_id = le32_to_cpu(hdr->id);
ie_len = le32_to_cpu(hdr->len);
len -= sizeof(*hdr);
data += sizeof(*hdr);
if (len < ie_len) {
ath10k_err("Invalid length for FW IE %d (%zu < %zu)\n",
ie_id, len, ie_len);
ret = -EINVAL;
goto err;
}
switch (ie_id) {
case ATH10K_FW_IE_FW_VERSION:
if (ie_len > sizeof(ar->hw->wiphy->fw_version) - 1)
break;
memcpy(ar->hw->wiphy->fw_version, data, ie_len);
ar->hw->wiphy->fw_version[ie_len] = '\0';
ath10k_dbg(ATH10K_DBG_BOOT,
"found fw version %s\n",
ar->hw->wiphy->fw_version);
break;
case ATH10K_FW_IE_TIMESTAMP:
if (ie_len != sizeof(u32))
break;
timestamp = (__le32 *)data;
ath10k_dbg(ATH10K_DBG_BOOT, "found fw timestamp %d\n",
le32_to_cpup(timestamp));
break;
case ATH10K_FW_IE_FEATURES:
ath10k_dbg(ATH10K_DBG_BOOT,
"found firmware features ie (%zd B)\n",
ie_len);
for (i = 0; i < ATH10K_FW_FEATURE_COUNT; i++) {
index = i / 8;
bit = i % 8;
if (index == ie_len)
break;
if (data[index] & (1 << bit)) {
ath10k_dbg(ATH10K_DBG_BOOT,
"Enabling feature bit: %i\n",
i);
__set_bit(i, ar->fw_features);
}
}
ath10k_dbg_dump(ATH10K_DBG_BOOT, "features", "",
ar->fw_features,
sizeof(ar->fw_features));
break;
case ATH10K_FW_IE_FW_IMAGE:
ath10k_dbg(ATH10K_DBG_BOOT,
"found fw image ie (%zd B)\n",
ie_len);
ar->firmware_data = data;
ar->firmware_len = ie_len;
break;
case ATH10K_FW_IE_OTP_IMAGE:
ath10k_dbg(ATH10K_DBG_BOOT,
"found otp image ie (%zd B)\n",
ie_len);
ar->otp_data = data;
ar->otp_len = ie_len;
break;
default:
ath10k_warn("Unknown FW IE: %u\n",
le32_to_cpu(hdr->id));
break;
}
/* jump over the padding */
ie_len = ALIGN(ie_len, 4);
len -= ie_len;
data += ie_len;
}
if (!ar->firmware_data || !ar->firmware_len) {
ath10k_warn("No ATH10K_FW_IE_FW_IMAGE found from %s, skipping\n",
name);
ret = -ENOMEDIUM;
goto err;
}
/* now fetch the board file */
if (ar->hw_params.fw.board == NULL) {
ath10k_err("board data file not defined");
ret = -EINVAL;
goto err;
}
ar->board = ath10k_fetch_fw_file(ar,
ar->hw_params.fw.dir,
ar->hw_params.fw.board);
if (IS_ERR(ar->board)) {
ret = PTR_ERR(ar->board);
ath10k_err("could not fetch board data (%d)\n", ret);
goto err;
}
ar->board_data = ar->board->data;
ar->board_len = ar->board->size;
return 0;
err:
ath10k_core_free_firmware_files(ar);
return ret;
}
static int ath10k_core_fetch_firmware_files(struct ath10k *ar)
{
int ret;
ret = ath10k_core_fetch_firmware_api_n(ar, ATH10K_FW_API2_FILE);
if (ret == 0) {
ar->fw_api = 2;
goto out;
}
ret = ath10k_core_fetch_firmware_api_1(ar);
if (ret)
return ret;
ar->fw_api = 1;
out:
ath10k_dbg(ATH10K_DBG_BOOT, "using fw api %d\n", ar->fw_api);
return 0;
}
static int ath10k_init_download_firmware(struct ath10k *ar)
{
int ret;
ret = ath10k_download_board_data(ar);
if (ret)
return ret;
ret = ath10k_download_and_run_otp(ar);
if (ret)
return ret;
ret = ath10k_download_fw(ar);
if (ret)
return ret;
return ret;
}
static int ath10k_init_uart(struct ath10k *ar)
{
int ret;
/*
* Explicitly setting UART prints to zero as target turns it on
* based on scratch registers.
*/
ret = ath10k_bmi_write32(ar, hi_serial_enable, 0);
if (ret) {
ath10k_warn("could not disable UART prints (%d)\n", ret);
return ret;
}
if (!uart_print)
return 0;
ret = ath10k_bmi_write32(ar, hi_dbg_uart_txpin, 7);
if (ret) {
ath10k_warn("could not enable UART prints (%d)\n", ret);
return ret;
}
ret = ath10k_bmi_write32(ar, hi_serial_enable, 1);
if (ret) {
ath10k_warn("could not enable UART prints (%d)\n", ret);
return ret;
}
/* Set the UART baud rate to 19200. */
ret = ath10k_bmi_write32(ar, hi_desired_baud_rate, 19200);
if (ret) {
ath10k_warn("could not set the baud rate (%d)\n", ret);
return ret;
}
ath10k_info("UART prints enabled\n");
return 0;
}
static int ath10k_init_hw_params(struct ath10k *ar)
{
const struct ath10k_hw_params *uninitialized_var(hw_params);
int i;
for (i = 0; i < ARRAY_SIZE(ath10k_hw_params_list); i++) {
hw_params = &ath10k_hw_params_list[i];
if (hw_params->id == ar->target_version)
break;
}
if (i == ARRAY_SIZE(ath10k_hw_params_list)) {
ath10k_err("Unsupported hardware version: 0x%x\n",
ar->target_version);
return -EINVAL;
}
ar->hw_params = *hw_params;
ath10k_dbg(ATH10K_DBG_BOOT, "Hardware name %s version 0x%x\n",
ar->hw_params.name, ar->target_version);
return 0;
}
static void ath10k_core_restart(struct work_struct *work)
{
struct ath10k *ar = container_of(work, struct ath10k, restart_work);
mutex_lock(&ar->conf_mutex);
switch (ar->state) {
case ATH10K_STATE_ON:
ath10k_halt(ar);
ar->state = ATH10K_STATE_RESTARTING;
ieee80211_restart_hw(ar->hw);
break;
case ATH10K_STATE_OFF:
/* this can happen if driver is being unloaded
* or if the crash happens during FW probing */
ath10k_warn("cannot restart a device that hasn't been started\n");
break;
case ATH10K_STATE_RESTARTING:
case ATH10K_STATE_RESTARTED:
ar->state = ATH10K_STATE_WEDGED;
/* fall through */
case ATH10K_STATE_WEDGED:
ath10k_warn("device is wedged, will not restart\n");
break;
}
mutex_unlock(&ar->conf_mutex);
}
struct ath10k *ath10k_core_create(void *hif_priv, struct device *dev,
const struct ath10k_hif_ops *hif_ops)
{
struct ath10k *ar;
ar = ath10k_mac_create();
if (!ar)
return NULL;
ar->ath_common.priv = ar;
ar->ath_common.hw = ar->hw;
ar->p2p = !!ath10k_p2p;
ar->dev = dev;
ar->hif.priv = hif_priv;
ar->hif.ops = hif_ops;
init_completion(&ar->scan.started);
init_completion(&ar->scan.completed);
init_completion(&ar->scan.on_channel);
init_completion(&ar->target_suspend);
init_completion(&ar->install_key_done);
init_completion(&ar->vdev_setup_done);
setup_timer(&ar->scan.timeout, ath10k_reset_scan, (unsigned long)ar);
ar->workqueue = create_singlethread_workqueue("ath10k_wq");
if (!ar->workqueue)
goto err_wq;
mutex_init(&ar->conf_mutex);
spin_lock_init(&ar->data_lock);
INIT_LIST_HEAD(&ar->peers);
init_waitqueue_head(&ar->peer_mapping_wq);
init_completion(&ar->offchan_tx_completed);
INIT_WORK(&ar->offchan_tx_work, ath10k_offchan_tx_work);
skb_queue_head_init(&ar->offchan_tx_queue);
INIT_WORK(&ar->wmi_mgmt_tx_work, ath10k_mgmt_over_wmi_tx_work);
skb_queue_head_init(&ar->wmi_mgmt_tx_queue);
INIT_WORK(&ar->restart_work, ath10k_core_restart);
return ar;
err_wq:
ath10k_mac_destroy(ar);
return NULL;
}
EXPORT_SYMBOL(ath10k_core_create);
void ath10k_core_destroy(struct ath10k *ar)
{
flush_workqueue(ar->workqueue);
destroy_workqueue(ar->workqueue);
ath10k_mac_destroy(ar);
}
EXPORT_SYMBOL(ath10k_core_destroy);
int ath10k_core_start(struct ath10k *ar)
{
int status;
lockdep_assert_held(&ar->conf_mutex);
ath10k_bmi_start(ar);
if (ath10k_init_configure_target(ar)) {
status = -EINVAL;
goto err;
}
status = ath10k_init_download_firmware(ar);
if (status)
goto err;
status = ath10k_init_uart(ar);
if (status)
goto err;
ar->htc.htc_ops.target_send_suspend_complete =
ath10k_send_suspend_complete;
status = ath10k_htc_init(ar);
if (status) {
ath10k_err("could not init HTC (%d)\n", status);
goto err;
}
status = ath10k_bmi_done(ar);
if (status)
goto err;
status = ath10k_wmi_attach(ar);
if (status) {
ath10k_err("WMI attach failed: %d\n", status);
goto err;
}
status = ath10k_hif_start(ar);
if (status) {
ath10k_err("could not start HIF: %d\n", status);
goto err_wmi_detach;
}
status = ath10k_htc_wait_target(&ar->htc);
if (status) {
ath10k_err("failed to connect to HTC: %d\n", status);
goto err_hif_stop;
}
status = ath10k_htt_attach(ar);
if (status) {
ath10k_err("could not attach htt (%d)\n", status);
goto err_hif_stop;
}
status = ath10k_init_connect_htc(ar);
if (status)
goto err_htt_detach;
ath10k_dbg(ATH10K_DBG_BOOT, "firmware %s booted\n",
ar->hw->wiphy->fw_version);
status = ath10k_wmi_cmd_init(ar);
if (status) {
ath10k_err("could not send WMI init command (%d)\n", status);
goto err_disconnect_htc;
}
status = ath10k_wmi_wait_for_unified_ready(ar);
if (status <= 0) {
ath10k_err("wmi unified ready event not received\n");
status = -ETIMEDOUT;
goto err_disconnect_htc;
}
status = ath10k_htt_attach_target(&ar->htt);
if (status)
goto err_disconnect_htc;
status = ath10k_debug_start(ar);
if (status)
goto err_disconnect_htc;
ar->free_vdev_map = (1 << TARGET_NUM_VDEVS) - 1;
INIT_LIST_HEAD(&ar->arvifs);
if (!test_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags))
ath10k_info("%s (0x%x) fw %s api %d htt %d.%d\n",
ar->hw_params.name, ar->target_version,
ar->hw->wiphy->fw_version, ar->fw_api,
ar->htt.target_version_major,
ar->htt.target_version_minor);
__set_bit(ATH10K_FLAG_FIRST_BOOT_DONE, &ar->dev_flags);
return 0;
err_disconnect_htc:
ath10k_htc_stop(&ar->htc);
err_htt_detach:
ath10k_htt_detach(&ar->htt);
err_hif_stop:
ath10k_hif_stop(ar);
err_wmi_detach:
ath10k_wmi_detach(ar);
err:
return status;
}
EXPORT_SYMBOL(ath10k_core_start);
int ath10k_wait_for_suspend(struct ath10k *ar, u32 suspend_opt)
{
int ret;
reinit_completion(&ar->target_suspend);
ret = ath10k_wmi_pdev_suspend_target(ar, suspend_opt);
if (ret) {
ath10k_warn("could not suspend target (%d)\n", ret);
return ret;
}
ret = wait_for_completion_timeout(&ar->target_suspend, 1 * HZ);
if (ret == 0) {
ath10k_warn("suspend timed out - target pause event never came\n");
return -ETIMEDOUT;
}
return 0;
}
void ath10k_core_stop(struct ath10k *ar)
{
lockdep_assert_held(&ar->conf_mutex);
/* try to suspend target */
ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND_AND_DISABLE_INTR);
ath10k_debug_stop(ar);
ath10k_htc_stop(&ar->htc);
ath10k_htt_detach(&ar->htt);
ath10k_wmi_detach(ar);
}
EXPORT_SYMBOL(ath10k_core_stop);
/* mac80211 manages fw/hw initialization through start/stop hooks. However in
* order to know what hw capabilities should be advertised to mac80211 it is
* necessary to load the firmware (and tear it down immediately since start
* hook will try to init it again) before registering */
static int ath10k_core_probe_fw(struct ath10k *ar)
{
struct bmi_target_info target_info;
int ret = 0;
ret = ath10k_hif_power_up(ar);
if (ret) {
ath10k_err("could not start pci hif (%d)\n", ret);
return ret;
}
memset(&target_info, 0, sizeof(target_info));
ret = ath10k_bmi_get_target_info(ar, &target_info);
if (ret) {
ath10k_err("could not get target info (%d)\n", ret);
ath10k_hif_power_down(ar);
return ret;
}
ar->target_version = target_info.version;
ar->hw->wiphy->hw_version = target_info.version;
ret = ath10k_init_hw_params(ar);
if (ret) {
ath10k_err("could not get hw params (%d)\n", ret);
ath10k_hif_power_down(ar);
return ret;
}
ret = ath10k_core_fetch_firmware_files(ar);
if (ret) {
ath10k_err("could not fetch firmware files (%d)\n", ret);
ath10k_hif_power_down(ar);
return ret;
}
mutex_lock(&ar->conf_mutex);
ret = ath10k_core_start(ar);
if (ret) {
ath10k_err("could not init core (%d)\n", ret);
ath10k_core_free_firmware_files(ar);
ath10k_hif_power_down(ar);
mutex_unlock(&ar->conf_mutex);
return ret;
}
ath10k_core_stop(ar);
mutex_unlock(&ar->conf_mutex);
ath10k_hif_power_down(ar);
return 0;
}
static int ath10k_core_check_chip_id(struct ath10k *ar)
{
u32 hw_revision = MS(ar->chip_id, SOC_CHIP_ID_REV);
ath10k_dbg(ATH10K_DBG_BOOT, "boot chip_id 0x%08x hw_revision 0x%x\n",
ar->chip_id, hw_revision);
/* Check that we are not using hw1.0 (some of them have same pci id
* as hw2.0) before doing anything else as ath10k crashes horribly
* due to missing hw1.0 workarounds. */
switch (hw_revision) {
case QCA988X_HW_1_0_CHIP_ID_REV:
ath10k_err("ERROR: qca988x hw1.0 is not supported\n");
return -EOPNOTSUPP;
case QCA988X_HW_2_0_CHIP_ID_REV:
/* known hardware revision, continue normally */
return 0;
default:
ath10k_warn("Warning: hardware revision unknown (0x%x), expect problems\n",
ar->chip_id);
return 0;
}
return 0;
}
int ath10k_core_register(struct ath10k *ar, u32 chip_id)
{
int status;
ar->chip_id = chip_id;
status = ath10k_core_check_chip_id(ar);
if (status) {
ath10k_err("Unsupported chip id 0x%08x\n", ar->chip_id);
return status;
}
status = ath10k_core_probe_fw(ar);
if (status) {
ath10k_err("could not probe fw (%d)\n", status);
return status;
}
status = ath10k_mac_register(ar);
if (status) {
ath10k_err("could not register to mac80211 (%d)\n", status);
goto err_release_fw;
}
status = ath10k_debug_create(ar);
if (status) {
ath10k_err("unable to initialize debugfs\n");
goto err_unregister_mac;
}
return 0;
err_unregister_mac:
ath10k_mac_unregister(ar);
err_release_fw:
ath10k_core_free_firmware_files(ar);
return status;
}
EXPORT_SYMBOL(ath10k_core_register);
void ath10k_core_unregister(struct ath10k *ar)
{
/* We must unregister from mac80211 before we stop HTC and HIF.
* Otherwise we will fail to submit commands to FW and mac80211 will be
* unhappy about callback failures. */
ath10k_mac_unregister(ar);
ath10k_core_free_firmware_files(ar);
ath10k_debug_destroy(ar);
}
EXPORT_SYMBOL(ath10k_core_unregister);
MODULE_AUTHOR("Qualcomm Atheros");
MODULE_DESCRIPTION("Core module for QCA988X PCIe devices.");
MODULE_LICENSE("Dual BSD/GPL");
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