For QCA6390, it needs to power down target when system suspends and
needs to power up target when system resumes in non-wow scenario.
The power up procedure downloads firmware again.
Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
Signed-off-by: Carl Huang <[email protected]>
---
drivers/net/wireless/ath/ath11k/core.c | 62 ++++++++++++++++++++++++++++------
drivers/net/wireless/ath/ath11k/core.h | 8 +++++
drivers/net/wireless/ath/ath11k/mac.c | 21 ++++++++++--
drivers/net/wireless/ath/ath11k/pci.c | 46 +++++++++++++++++++++++++
drivers/net/wireless/ath/ath11k/qmi.c | 21 ++++++++++--
drivers/net/wireless/ath/ath11k/qmi.h | 1 +
6 files changed, 144 insertions(+), 15 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index 6487651..e3d4476 100644
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -411,7 +411,20 @@ int ath11k_core_fetch_bdf(struct ath11k_base *ab, struct ath11k_board_data *bd)
return 0;
}
-static void ath11k_core_stop(struct ath11k_base *ab)
+void ath11k_core_cutoff_stop(struct ath11k_base *ab)
+{
+ if (!test_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags))
+ ath11k_qmi_firmware_stop(ab);
+
+ ath11k_hif_stop(ab);
+ ath11k_wmi_detach(ab);
+ ath11k_thermal_unregister(ab);
+ ath11k_dp_pdev_free(ab);
+ ath11k_dp_free(ab);
+ ath11k_dp_pdev_reo_cleanup(ab);
+}
+
+void ath11k_core_stop(struct ath11k_base *ab)
{
if (!test_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags))
ath11k_qmi_firmware_stop(ab);
@@ -466,16 +479,19 @@ static int ath11k_core_pdev_create(struct ath11k_base *ab)
{
int ret;
- ret = ath11k_debugfs_pdev_create(ab);
- if (ret) {
- ath11k_err(ab, "failed to create core pdev debugfs: %d\n", ret);
- return ret;
- }
+ if (!test_bit(ATH11K_FLAG_CORE_STARTING, &ab->dev_flags)) {
+ ret = ath11k_debugfs_pdev_create(ab);
+ if (ret) {
+ ath11k_err(ab, "failed to create core pdev debugfs: %d\n", ret);
+ return ret;
+ }
- ret = ath11k_mac_register(ab);
- if (ret) {
- ath11k_err(ab, "failed register the radio with mac80211: %d\n", ret);
- goto err_pdev_debug;
+ ret = ath11k_mac_register(ab);
+ if (ret) {
+ ath11k_err(ab, "failed register the radio with mac80211: %d\n",
+ ret);
+ goto err_pdev_debug;
+ }
}
ret = ath11k_dp_pdev_alloc(ab);
@@ -689,6 +705,9 @@ int ath11k_core_qmi_firmware_ready(struct ath11k_base *ab)
ath11k_hif_irq_enable(ab);
mutex_unlock(&ab->core_lock);
+ if (test_bit(ATH11K_FLAG_CORE_STARTING, &ab->dev_flags))
+ complete(&ab->fw_mac_restart);
+
return 0;
err_core_stop:
@@ -943,5 +962,28 @@ struct ath11k_base *ath11k_core_alloc(struct device *dev, size_t priv_size,
}
EXPORT_SYMBOL(ath11k_core_alloc);
+int ath11k_core_suspend(struct ath11k_base *ab)
+{
+ ath11k_hif_irq_disable(ab);
+ ath11k_core_cutoff_stop(ab);
+ ath11k_hif_power_down(ab);
+ ath11k_qmi_free_resource(ab);
+
+ return 0;
+}
+EXPORT_SYMBOL(ath11k_core_suspend);
+
+int ath11k_core_resume(struct ath11k_base *ab)
+{
+ int ret = 0;
+
+ set_bit(ATH11K_FLAG_CORE_STARTING, &ab->dev_flags);
+ init_completion(&ab->fw_mac_restart);
+ ath11k_hif_power_up(ab);
+
+ return ret;
+}
+EXPORT_SYMBOL(ath11k_core_resume);
+
MODULE_DESCRIPTION("Core module for Qualcomm Atheros 802.11ax wireless LAN cards.");
MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 031de2b..e38817c 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -168,6 +168,8 @@ enum ath11k_scan_state {
ATH11K_SCAN_ABORTING,
};
+#define ATH11K_MAC_START_TIMEOUT (3 * HZ)
+
enum ath11k_dev_flags {
ATH11K_CAC_RUNNING,
ATH11K_FLAG_CORE_REGISTERED,
@@ -178,6 +180,8 @@ enum ath11k_dev_flags {
ATH11K_FLAG_RECOVERY,
ATH11K_FLAG_UNREGISTERING,
ATH11K_FLAG_REGISTERED,
+ ATH11K_FLAG_CORE_STOPPED,
+ ATH11K_FLAG_CORE_STARTING
};
enum ath11k_monitor_flags {
@@ -731,6 +735,8 @@ struct ath11k_base {
u32 num_db_cap;
struct timer_list mon_reap_timer;
+ struct completion fw_mac_restart;
+
/* must be last */
u8 drv_priv[0] __aligned(sizeof(void *));
};
@@ -889,6 +895,8 @@ void ath11k_core_halt(struct ath11k *ar);
const struct firmware *ath11k_core_firmware_request(struct ath11k_base *ab,
const char *filename);
+int ath11k_core_resume(struct ath11k_base *ab);
+int ath11k_core_suspend(struct ath11k_base *ab);
static inline const char *ath11k_scan_state_str(enum ath11k_scan_state state)
{
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index dfced9c..2a76c19 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -15,6 +15,7 @@
#include "testmode.h"
#include "peer.h"
#include "debugfs_sta.h"
+#include "hif.h"
#define CHAN2G(_channel, _freq, _flags) { \
.band = NL80211_BAND_2GHZ, \
@@ -837,12 +838,15 @@ static int ath11k_config_ps(struct ath11k *ar)
static int ath11k_mac_op_config(struct ieee80211_hw *hw, u32 changed)
{
+ struct ath11k *ar = hw->priv;
+ int ret = 0;
+
mutex_lock(&ar->conf_mutex);
if (changed & IEEE80211_CONF_CHANGE_PS)
- ath11k_config_ps(ar);
+ ret = ath11k_config_ps(ar);
mutex_unlock(&ar->conf_mutex);
- return 0;
+ return ret;
}
static int ath11k_mac_setup_bcn_tmpl(struct ath11k_vif *arvif)
@@ -4209,6 +4213,18 @@ static int ath11k_mac_op_start(struct ieee80211_hw *hw)
switch (ar->state) {
case ATH11K_STATE_OFF:
+ /* mac_op_stop was called before, so here need to wait
+ * target powered up and everything is ready.
+ */
+ if (test_bit(ATH11K_FLAG_CORE_STARTING, &ab->dev_flags)) {
+ if (!wait_for_completion_timeout(&ab->fw_mac_restart,
+ ATH11K_MAC_START_TIMEOUT)) {
+ ath11k_err(ab, "wait mac start timeout\n");
+ ret = -ETIMEDOUT;
+ }
+ clear_bit(ATH11K_FLAG_CORE_STARTING, &ab->dev_flags);
+ clear_bit(ATH11K_FLAG_CORE_STOPPED, &ab->dev_flags);
+ }
ar->state = ATH11K_STATE_ON;
break;
case ATH11K_STATE_RESTARTING:
@@ -4330,6 +4346,7 @@ static void ath11k_mac_op_stop(struct ieee80211_hw *hw)
clear_bit(ATH11K_CAC_RUNNING, &ar->dev_flags);
ar->state = ATH11K_STATE_OFF;
+ set_bit(ATH11K_FLAG_CORE_STOPPED, &ar->ab->dev_flags);
mutex_unlock(&ar->conf_mutex);
cancel_delayed_work_sync(&ar->scan.timeout);
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index d7eb6b7..7ffb198 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -1030,12 +1030,58 @@ static void ath11k_pci_shutdown(struct pci_dev *pdev)
ath11k_pci_power_down(ab);
}
+static int ath11k_pci_suspend(struct ath11k_base *ab)
+{
+ return ath11k_core_suspend(ab);
+}
+
+static int ath11k_pci_resume(struct ath11k_base *ab)
+{
+ struct ath11k_pci *ar_pci = ath11k_pci_priv(ab);
+
+ ar_pci->register_window = 0;
+
+ return ath11k_core_resume(ab);
+}
+
+static __maybe_unused int ath11k_pci_pm_suspend(struct device *dev)
+{
+ struct ath11k_base *ab = dev_get_drvdata(dev);
+ int ret;
+
+ ret = ath11k_pci_suspend(ab);
+ if (ret)
+ ath11k_warn(ab, "failed to suspend hif: %d\n", ret);
+
+ return ret;
+}
+
+static __maybe_unused int ath11k_pci_pm_resume(struct device *dev)
+{
+ struct ath11k_base *ab = dev_get_drvdata(dev);
+ int ret;
+
+ ret = ath11k_pci_resume(ab);
+ if (ret)
+ ath11k_warn(ab, "failed to resume hif: %d\n", ret);
+
+ return ret;
+}
+
+static SIMPLE_DEV_PM_OPS(ath11k_pci_pm_ops,
+ ath11k_pci_pm_suspend,
+ ath11k_pci_pm_resume);
+
static struct pci_driver ath11k_pci_driver = {
.name = "ath11k_pci",
.id_table = ath11k_pci_id_table,
.probe = ath11k_pci_probe,
.remove = ath11k_pci_remove,
.shutdown = ath11k_pci_shutdown,
+#ifdef CONFIG_PM
+ .driver.pm = &ath11k_pci_pm_ops,
+#endif
+
};
static int ath11k_pci_init(void)
diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c
index c2b1651..868ddd1 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.c
+++ b/drivers/net/wireless/ath/ath11k/qmi.c
@@ -2612,12 +2612,22 @@ static void ath11k_qmi_driver_event_work(struct work_struct *work)
ath11k_qmi_event_load_bdf(qmi);
break;
case ATH11K_QMI_EVENT_FW_READY:
- if (test_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags)) {
+ if (test_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags) &&
+ !test_bit(ATH11K_FLAG_CORE_STARTING, &ab->dev_flags)) {
ath11k_hal_dump_srng_stats(ab);
queue_work(ab->workqueue, &ab->restart_work);
break;
}
+ /* mac_op_stop and then mac_op_start on non-wow
+ * case, need to clear ATH11K_FLAG_CRASH_FLUSH and
+ * ATH11K_FLAG_RECOVERY.
+ */
+ if (test_bit(ATH11K_FLAG_CORE_STARTING, &ab->dev_flags)) {
+ clear_bit(ATH11K_FLAG_CRASH_FLUSH, &ab->dev_flags);
+ clear_bit(ATH11K_FLAG_RECOVERY, &ab->dev_flags);
+ }
+
ath11k_core_qmi_firmware_ready(ab);
ab->qmi.cal_done = 1;
set_bit(ATH11K_FLAG_REGISTERED, &ab->dev_flags);
@@ -2674,12 +2684,17 @@ int ath11k_qmi_init_service(struct ath11k_base *ab)
return ret;
}
+void ath11k_qmi_free_resource(struct ath11k_base *ab)
+{
+ ath11k_qmi_m3_free(ab);
+ ath11k_qmi_free_target_mem_chunk(ab);
+}
+
void ath11k_qmi_deinit_service(struct ath11k_base *ab)
{
qmi_handle_release(&ab->qmi.handle);
cancel_work_sync(&ab->qmi.event_work);
destroy_workqueue(ab->qmi.event_wq);
- ath11k_qmi_m3_free(ab);
- ath11k_qmi_free_target_mem_chunk(ab);
+ ath11k_qmi_free_resource(ab);
}
diff --git a/drivers/net/wireless/ath/ath11k/qmi.h b/drivers/net/wireless/ath/ath11k/qmi.h
index b0a818f..3aadc4f 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.h
+++ b/drivers/net/wireless/ath/ath11k/qmi.h
@@ -462,5 +462,6 @@ void ath11k_qmi_event_work(struct work_struct *work);
void ath11k_qmi_msg_recv_work(struct work_struct *work);
void ath11k_qmi_deinit_service(struct ath11k_base *ab);
int ath11k_qmi_init_service(struct ath11k_base *ab);
+void ath11k_qmi_free_resource(struct ath11k_base *ab);
#endif
--
2.7.4
Carl Huang <[email protected]> wrote:
> For QCA6390, it needs to power down target when system suspends and
> needs to power up target when system resumes in non-wow scenario.
>
> The power up procedure downloads firmware again.
>
> Tested-on: QCA6390 hw2.0 PCI WLAN.HST.1.0.1-01740-QCAHSTSWPLZ_V2_TO_X86-1
>
> Signed-off-by: Carl Huang <[email protected]>
Failed to apply, please rebase.
error: patch failed: drivers/net/wireless/ath/ath11k/mac.c:837
error: drivers/net/wireless/ath/ath11k/mac.c: patch does not apply
stg import: Diff does not apply cleanly
Patch set to Changes Requested.
--
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches