Implement WoW enable and WoW wakeup commands which are needed
for suspend/resume.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Baochen Qiang <quic_bqiang@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath12k/Makefile | 1 +
drivers/net/wireless/ath/ath12k/core.c | 2 +
drivers/net/wireless/ath/ath12k/core.h | 4 +
drivers/net/wireless/ath/ath12k/wmi.c | 104 ++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 174 +++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/wow.c | 74 ++++++++++
drivers/net/wireless/ath/ath12k/wow.h | 30 ++++
7 files changed, 389 insertions(+)
create mode 100644 drivers/net/wireless/ath/ath12k/wow.c
create mode 100644 drivers/net/wireless/ath/ath12k/wow.h
diff --git a/drivers/net/wireless/ath/ath12k/Makefile b/drivers/net/wireless/ath/ath12k/Makefile
index d42480db7463..f0dcc933aa95 100644
--- a/drivers/net/wireless/ath/ath12k/Makefile
+++ b/drivers/net/wireless/ath/ath12k/Makefile
@@ -26,6 +26,7 @@ ath12k-y += core.o \
ath12k-$(CONFIG_ATH12K_DEBUGFS) += debugfs.o
ath12k-$(CONFIG_ACPI) += acpi.o
ath12k-$(CONFIG_ATH12K_TRACING) += trace.o
+ath12k-$(CONFIG_PM) += wow.o
# for tracing framework to find trace.h
CFLAGS_trace.o := -I$(src)
diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 9482d5db71e7..9bc0547cf01c 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -16,6 +16,7 @@
#include "hif.h"
#include "fw.h"
#include "debugfs.h"
+#include "wow.h"
unsigned int ath12k_debug_mask;
module_param_named(debug_mask, ath12k_debug_mask, uint, 0644);
@@ -1262,6 +1263,7 @@ struct ath12k_base *ath12k_core_alloc(struct device *dev, size_t priv_size,
timer_setup(&ab->rx_replenish_retry, ath12k_ce_rx_replenish_retry, 0);
init_completion(&ab->htc_suspend);
init_completion(&ab->restart_completed);
+ init_completion(&ab->wow.wakeup_completed);
ab->dev = dev;
ab->hif.bus = bus;
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index bb6c1b562baf..a2aa6d7162a5 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -766,6 +766,10 @@ struct ath12k_base {
const struct ath12k_hif_ops *ops;
} hif;
+ struct {
+ struct completion wakeup_completed;
+ } wow;
+
struct ath12k_ce ce;
struct timer_list rx_replenish_retry;
struct ath12k_hal hal;
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 7a52d2082b79..2aa00d5154c8 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -6999,6 +6999,65 @@ static void ath12k_wmi_twt_disable_event(struct ath12k_base *ab,
kfree(tb);
}
+static int ath12k_wmi_wow_wakeup_host_parse(struct ath12k_base *ab,
+ u16 tag, u16 len,
+ const void *ptr, void *data)
+{
+ const struct wmi_wow_ev_pg_fault_param *pf_param;
+ const struct wmi_wow_ev_param *param;
+ struct wmi_wow_ev_arg *arg = data;
+ int pf_len;
+
+ switch (tag) {
+ case WMI_TAG_WOW_EVENT_INFO:
+ param = ptr;
+ arg->wake_reason = le32_to_cpu(param->wake_reason);
+ ath12k_dbg(ab, ATH12K_DBG_WMI, "wow wakeup host reason %d %s\n",
+ arg->wake_reason, wow_reason(arg->wake_reason));
+ break;
+
+ case WMI_TAG_ARRAY_BYTE:
+ if (arg && arg->wake_reason == WOW_REASON_PAGE_FAULT) {
+ pf_param = ptr;
+ pf_len = le32_to_cpu(pf_param->len);
+ if (pf_len > len - sizeof(pf_len) ||
+ pf_len < 0) {
+ ath12k_warn(ab, "invalid page fault buffer len %d\n",
+ pf_len);
+ return -EINVAL;
+ }
+ ath12k_dbg(ab, ATH12K_DBG_WMI, "wow data_len = %d\n",
+ pf_len);
+ ath12k_dbg_dump(ab, ATH12K_DBG_WMI,
+ "wow_event_info_type packet present",
+ "wow_pg_fault ",
+ pf_param->data,
+ pf_len);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static void ath12k_wmi_event_wow_wakeup_host(struct ath12k_base *ab, struct sk_buff *skb)
+{
+ struct wmi_wow_ev_arg arg = { };
+ int ret;
+
+ ret = ath12k_wmi_tlv_iter(ab, skb->data, skb->len,
+ ath12k_wmi_wow_wakeup_host_parse,
+ &arg);
+ if (ret) {
+ ath12k_warn(ab, "failed to parse wmi wow tlv: %d\n", ret);
+ return;
+ }
+
+ complete(&ab->wow.wakeup_completed);
+}
+
static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb)
{
struct wmi_cmd_hdr *cmd_hdr;
@@ -7119,6 +7178,9 @@ static void ath12k_wmi_op_rx(struct ath12k_base *ab, struct sk_buff *skb)
case WMI_DIAG_EVENTID:
ath12k_wmi_diag_event(ab, skb);
break;
+ case WMI_WOW_WAKEUP_HOST_EVENTID:
+ ath12k_wmi_event_wow_wakeup_host(ab, skb);
+ break;
/* TODO: Add remaining events */
default:
ath12k_dbg(ab, ATH12K_DBG_WMI, "Unknown eventid: 0x%x\n", id);
@@ -7328,3 +7390,45 @@ void ath12k_wmi_detach(struct ath12k_base *ab)
ath12k_wmi_free_dbring_caps(ab);
}
+
+int ath12k_wmi_wow_host_wakeup_ind(struct ath12k *ar)
+{
+ struct wmi_wow_host_wakeup_cmd *cmd;
+ struct sk_buff *skb;
+ size_t len;
+
+ len = sizeof(*cmd);
+ skb = ath12k_wmi_alloc_skb(ar->wmi->wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_wow_host_wakeup_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_WOW_HOSTWAKEUP_FROM_SLEEP_CMD,
+ sizeof(*cmd));
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "wmi tlv wow host wakeup ind\n");
+
+ return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_WOW_HOSTWAKEUP_FROM_SLEEP_CMDID);
+}
+
+int ath12k_wmi_wow_enable(struct ath12k *ar)
+{
+ struct wmi_wow_enable_cmd *cmd;
+ struct sk_buff *skb;
+ int len;
+
+ len = sizeof(*cmd);
+ skb = ath12k_wmi_alloc_skb(ar->wmi->wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_wow_enable_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_WOW_ENABLE_CMD,
+ sizeof(*cmd));
+
+ cmd->enable = cpu_to_le32(1);
+ cmd->pause_iface_config = cpu_to_le32(WOW_IFACE_PAUSE_ENABLED);
+ ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "wmi tlv wow enable\n");
+
+ return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_WOW_ENABLE_CMDID);
+}
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 496866673aea..039090ce692a 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -4868,6 +4868,178 @@ struct wmi_twt_disable_event {
__le32 status;
} __packed;
+/* WOW structures */
+enum wmi_wow_wakeup_event {
+ WOW_BMISS_EVENT = 0,
+ WOW_BETTER_AP_EVENT,
+ WOW_DEAUTH_RECVD_EVENT,
+ WOW_MAGIC_PKT_RECVD_EVENT,
+ WOW_GTK_ERR_EVENT,
+ WOW_FOURWAY_HSHAKE_EVENT,
+ WOW_EAPOL_RECVD_EVENT,
+ WOW_NLO_DETECTED_EVENT,
+ WOW_DISASSOC_RECVD_EVENT,
+ WOW_PATTERN_MATCH_EVENT,
+ WOW_CSA_IE_EVENT,
+ WOW_PROBE_REQ_WPS_IE_EVENT,
+ WOW_AUTH_REQ_EVENT,
+ WOW_ASSOC_REQ_EVENT,
+ WOW_HTT_EVENT,
+ WOW_RA_MATCH_EVENT,
+ WOW_HOST_AUTO_SHUTDOWN_EVENT,
+ WOW_IOAC_MAGIC_EVENT,
+ WOW_IOAC_SHORT_EVENT,
+ WOW_IOAC_EXTEND_EVENT,
+ WOW_IOAC_TIMER_EVENT,
+ WOW_DFS_PHYERR_RADAR_EVENT,
+ WOW_BEACON_EVENT,
+ WOW_CLIENT_KICKOUT_EVENT,
+ WOW_EVENT_MAX,
+};
+
+enum wmi_wow_interface_cfg {
+ WOW_IFACE_PAUSE_ENABLED,
+ WOW_IFACE_PAUSE_DISABLED
+};
+
+#define C2S(x) case x: return #x
+
+static inline const char *wow_wakeup_event(enum wmi_wow_wakeup_event ev)
+{
+ switch (ev) {
+ C2S(WOW_BMISS_EVENT);
+ C2S(WOW_BETTER_AP_EVENT);
+ C2S(WOW_DEAUTH_RECVD_EVENT);
+ C2S(WOW_MAGIC_PKT_RECVD_EVENT);
+ C2S(WOW_GTK_ERR_EVENT);
+ C2S(WOW_FOURWAY_HSHAKE_EVENT);
+ C2S(WOW_EAPOL_RECVD_EVENT);
+ C2S(WOW_NLO_DETECTED_EVENT);
+ C2S(WOW_DISASSOC_RECVD_EVENT);
+ C2S(WOW_PATTERN_MATCH_EVENT);
+ C2S(WOW_CSA_IE_EVENT);
+ C2S(WOW_PROBE_REQ_WPS_IE_EVENT);
+ C2S(WOW_AUTH_REQ_EVENT);
+ C2S(WOW_ASSOC_REQ_EVENT);
+ C2S(WOW_HTT_EVENT);
+ C2S(WOW_RA_MATCH_EVENT);
+ C2S(WOW_HOST_AUTO_SHUTDOWN_EVENT);
+ C2S(WOW_IOAC_MAGIC_EVENT);
+ C2S(WOW_IOAC_SHORT_EVENT);
+ C2S(WOW_IOAC_EXTEND_EVENT);
+ C2S(WOW_IOAC_TIMER_EVENT);
+ C2S(WOW_DFS_PHYERR_RADAR_EVENT);
+ C2S(WOW_BEACON_EVENT);
+ C2S(WOW_CLIENT_KICKOUT_EVENT);
+ C2S(WOW_EVENT_MAX);
+ default:
+ return NULL;
+ }
+}
+
+enum wmi_wow_wake_reason {
+ WOW_REASON_UNSPECIFIED = -1,
+ WOW_REASON_NLOD = 0,
+ WOW_REASON_AP_ASSOC_LOST,
+ WOW_REASON_LOW_RSSI,
+ WOW_REASON_DEAUTH_RECVD,
+ WOW_REASON_DISASSOC_RECVD,
+ WOW_REASON_GTK_HS_ERR,
+ WOW_REASON_EAP_REQ,
+ WOW_REASON_FOURWAY_HS_RECV,
+ WOW_REASON_TIMER_INTR_RECV,
+ WOW_REASON_PATTERN_MATCH_FOUND,
+ WOW_REASON_RECV_MAGIC_PATTERN,
+ WOW_REASON_P2P_DISC,
+ WOW_REASON_WLAN_HB,
+ WOW_REASON_CSA_EVENT,
+ WOW_REASON_PROBE_REQ_WPS_IE_RECV,
+ WOW_REASON_AUTH_REQ_RECV,
+ WOW_REASON_ASSOC_REQ_RECV,
+ WOW_REASON_HTT_EVENT,
+ WOW_REASON_RA_MATCH,
+ WOW_REASON_HOST_AUTO_SHUTDOWN,
+ WOW_REASON_IOAC_MAGIC_EVENT,
+ WOW_REASON_IOAC_SHORT_EVENT,
+ WOW_REASON_IOAC_EXTEND_EVENT,
+ WOW_REASON_IOAC_TIMER_EVENT,
+ WOW_REASON_ROAM_HO,
+ WOW_REASON_DFS_PHYERR_RADADR_EVENT,
+ WOW_REASON_BEACON_RECV,
+ WOW_REASON_CLIENT_KICKOUT_EVENT,
+ WOW_REASON_PAGE_FAULT = 0x3a,
+ WOW_REASON_DEBUG_TEST = 0xFF,
+};
+
+static inline const char *wow_reason(enum wmi_wow_wake_reason reason)
+{
+ switch (reason) {
+ C2S(WOW_REASON_UNSPECIFIED);
+ C2S(WOW_REASON_NLOD);
+ C2S(WOW_REASON_AP_ASSOC_LOST);
+ C2S(WOW_REASON_LOW_RSSI);
+ C2S(WOW_REASON_DEAUTH_RECVD);
+ C2S(WOW_REASON_DISASSOC_RECVD);
+ C2S(WOW_REASON_GTK_HS_ERR);
+ C2S(WOW_REASON_EAP_REQ);
+ C2S(WOW_REASON_FOURWAY_HS_RECV);
+ C2S(WOW_REASON_TIMER_INTR_RECV);
+ C2S(WOW_REASON_PATTERN_MATCH_FOUND);
+ C2S(WOW_REASON_RECV_MAGIC_PATTERN);
+ C2S(WOW_REASON_P2P_DISC);
+ C2S(WOW_REASON_WLAN_HB);
+ C2S(WOW_REASON_CSA_EVENT);
+ C2S(WOW_REASON_PROBE_REQ_WPS_IE_RECV);
+ C2S(WOW_REASON_AUTH_REQ_RECV);
+ C2S(WOW_REASON_ASSOC_REQ_RECV);
+ C2S(WOW_REASON_HTT_EVENT);
+ C2S(WOW_REASON_RA_MATCH);
+ C2S(WOW_REASON_HOST_AUTO_SHUTDOWN);
+ C2S(WOW_REASON_IOAC_MAGIC_EVENT);
+ C2S(WOW_REASON_IOAC_SHORT_EVENT);
+ C2S(WOW_REASON_IOAC_EXTEND_EVENT);
+ C2S(WOW_REASON_IOAC_TIMER_EVENT);
+ C2S(WOW_REASON_ROAM_HO);
+ C2S(WOW_REASON_DFS_PHYERR_RADADR_EVENT);
+ C2S(WOW_REASON_BEACON_RECV);
+ C2S(WOW_REASON_CLIENT_KICKOUT_EVENT);
+ C2S(WOW_REASON_PAGE_FAULT);
+ C2S(WOW_REASON_DEBUG_TEST);
+ default:
+ return NULL;
+ }
+}
+
+#undef C2S
+
+struct wmi_wow_enable_cmd {
+ __le32 tlv_header;
+ __le32 enable;
+ __le32 pause_iface_config;
+ __le32 flags;
+} __packed;
+
+struct wmi_wow_host_wakeup_cmd {
+ __le32 tlv_header;
+ __le32 reserved;
+} __packed;
+
+struct wmi_wow_ev_param {
+ __le32 vdev_id;
+ __le32 flag;
+ __le32 wake_reason;
+ __le32 data_len;
+} __packed;
+
+struct wmi_wow_ev_pg_fault_param {
+ __le32 len;
+ u8 data[];
+} __packed;
+
+struct wmi_wow_ev_arg {
+ enum wmi_wow_wake_reason wake_reason;
+};
+
void ath12k_wmi_init_qcn9274(struct ath12k_base *ab,
struct ath12k_wmi_resource_config_arg *config);
void ath12k_wmi_init_wcn7850(struct ath12k_base *ab,
@@ -5020,4 +5192,6 @@ ath12k_wmi_mac_phy_get_hw_link_id(const struct ath12k_wmi_mac_phy_caps_params *p
WMI_CAPS_PARAMS_HW_LINK_ID);
}
+int ath12k_wmi_wow_host_wakeup_ind(struct ath12k *ar);
+int ath12k_wmi_wow_enable(struct ath12k *ar);
#endif
diff --git a/drivers/net/wireless/ath/ath12k/wow.c b/drivers/net/wireless/ath/ath12k/wow.c
new file mode 100644
index 000000000000..98e36fc87fa6
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/wow.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include <linux/delay.h>
+
+#include "mac.h"
+#include "core.h"
+#include "hif.h"
+#include "debug.h"
+#include "wmi.h"
+#include "wow.h"
+
+int ath12k_wow_enable(struct ath12k *ar)
+{
+ struct ath12k_base *ab = ar->ab;
+ int i, ret;
+
+ clear_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags);
+
+ for (i = 0; i < ATH12K_WOW_RETRY_NUM; i++) {
+ reinit_completion(&ab->htc_suspend);
+
+ ret = ath12k_wmi_wow_enable(ar);
+ if (ret) {
+ ath12k_warn(ab, "failed to issue wow enable: %d\n", ret);
+ return ret;
+ }
+
+ ret = wait_for_completion_timeout(&ab->htc_suspend, 3 * HZ);
+ if (ret == 0) {
+ ath12k_warn(ab,
+ "timed out while waiting for htc suspend completion\n");
+ return -ETIMEDOUT;
+ }
+
+ if (test_bit(ATH12K_FLAG_HTC_SUSPEND_COMPLETE, &ab->dev_flags))
+ /* success, suspend complete received */
+ return 0;
+
+ ath12k_warn(ab, "htc suspend not complete, retrying (try %d)\n",
+ i);
+ msleep(ATH12K_WOW_RETRY_WAIT_MS);
+ }
+
+ ath12k_warn(ab, "htc suspend not complete, failing after %d tries\n", i);
+
+ return -ETIMEDOUT;
+}
+
+int ath12k_wow_wakeup(struct ath12k *ar)
+{
+ struct ath12k_base *ab = ar->ab;
+ int ret;
+
+ reinit_completion(&ab->wow.wakeup_completed);
+
+ ret = ath12k_wmi_wow_host_wakeup_ind(ar);
+ if (ret) {
+ ath12k_warn(ab, "failed to send wow wakeup indication: %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = wait_for_completion_timeout(&ab->wow.wakeup_completed, 3 * HZ);
+ if (ret == 0) {
+ ath12k_warn(ab, "timed out while waiting for wow wakeup completion\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
diff --git a/drivers/net/wireless/ath/ath12k/wow.h b/drivers/net/wireless/ath/ath12k/wow.h
new file mode 100644
index 000000000000..6817ceaa4cfe
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/wow.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2020 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022, 2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef ATH12K_WOW_H
+#define ATH12K_WOW_H
+
+#define ATH12K_WOW_RETRY_NUM 10
+#define ATH12K_WOW_RETRY_WAIT_MS 200
+
+#ifdef CONFIG_PM
+
+int ath12k_wow_enable(struct ath12k *ar);
+int ath12k_wow_wakeup(struct ath12k *ar);
+
+#else
+
+static inline int ath12k_wow_enable(struct ath12k *ar)
+{
+ return 0;
+}
+
+static inline int ath12k_wow_wakeup(struct ath12k *ar)
+{
+ return 0;
+}
+#endif /* CONFIG_PM */
+#endif /* ATH12K_WOW_H */
--
2.25.1
