From 4a3c212eee0e36c1cd55bfbfb94041a0d3ad265b Mon Sep 17 00:00:00 2001 From: Baochen Qiang Date: Wed, 19 Jun 2024 17:21:11 +0300 Subject: [PATCH] wifi: ath12k: add basic WoW functionalities Implement basic WoW functionalities such as magic-packet, disconnect and pattern. The logic is very similar to ath11k. When WoW is configured, ath12k_core_suspend and ath12k_core_resume are skipped (by checking ar->state) as we are not allowed to power cycle firmware. 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 Acked-by: Jeff Johnson Signed-off-by: Kalle Valo Link: https://patch.msgid.link/20240604055407.12506-4-quic_bqiang@quicinc.com --- drivers/net/wireless/ath/ath12k/core.c | 46 ++- drivers/net/wireless/ath/ath12k/core.h | 5 + drivers/net/wireless/ath/ath12k/htc.c | 6 + drivers/net/wireless/ath/ath12k/mac.c | 14 + drivers/net/wireless/ath/ath12k/wmi.c | 143 +++++++++ drivers/net/wireless/ath/ath12k/wmi.h | 63 ++++ drivers/net/wireless/ath/ath12k/wow.c | 416 +++++++++++++++++++++++++ drivers/net/wireless/ath/ath12k/wow.h | 32 ++ 8 files changed, 717 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c index 7603516500ba..51252e8bc1ae 100644 --- a/drivers/net/wireless/ath/ath12k/core.c +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -43,13 +43,37 @@ static int ath12k_core_rfkill_config(struct ath12k_base *ab) return ret; } +/* Check if we need to continue with suspend/resume operation. + * Return: + * a negative value: error happens and don't continue. + * 0: no error but don't continue. + * positive value: no error and do continue. + */ +static int ath12k_core_continue_suspend_resume(struct ath12k_base *ab) +{ + struct ath12k *ar; + + if (!ab->hw_params->supports_suspend) + return -EOPNOTSUPP; + + /* so far single_pdev_only chips have supports_suspend as true + * so pass 0 as a dummy pdev_id here. + */ + ar = ab->pdevs[0].ar; + if (!ar || !ar->ah || ar->ah->state != ATH12K_HW_STATE_OFF) + return 0; + + return 1; +} + int ath12k_core_suspend(struct ath12k_base *ab) { struct ath12k *ar; int ret, i; - if (!ab->hw_params->supports_suspend) - return -EOPNOTSUPP; + ret = ath12k_core_continue_suspend_resume(ab); + if (ret <= 0) + return ret; for (i = 0; i < ab->num_radios; i++) { ar = ab->pdevs[i].ar; @@ -81,8 +105,11 @@ EXPORT_SYMBOL(ath12k_core_suspend); int ath12k_core_suspend_late(struct ath12k_base *ab) { - if (!ab->hw_params->supports_suspend) - return -EOPNOTSUPP; + int ret; + + ret = ath12k_core_continue_suspend_resume(ab); + if (ret <= 0) + return ret; ath12k_acpi_stop(ab); @@ -99,8 +126,9 @@ int ath12k_core_resume_early(struct ath12k_base *ab) { int ret; - if (!ab->hw_params->supports_suspend) - return -EOPNOTSUPP; + ret = ath12k_core_continue_suspend_resume(ab); + if (ret <= 0) + return ret; reinit_completion(&ab->restart_completed); ret = ath12k_hif_power_up(ab); @@ -114,9 +142,11 @@ EXPORT_SYMBOL(ath12k_core_resume_early); int ath12k_core_resume(struct ath12k_base *ab) { long time_left; + int ret; - if (!ab->hw_params->supports_suspend) - return -EOPNOTSUPP; + ret = ath12k_core_continue_suspend_resume(ab); + if (ret <= 0) + return ret; time_left = wait_for_completion_timeout(&ab->restart_completed, ATH12K_RESET_TIMEOUT_HZ); diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h index 10aa3aca7250..2fd08648cef3 100644 --- a/drivers/net/wireless/ath/ath12k/core.h +++ b/drivers/net/wireless/ath/ath12k/core.h @@ -28,6 +28,7 @@ #include "dbring.h" #include "fw.h" #include "acpi.h" +#include "wow.h" #define SM(_v, _f) (((_v) << _f##_LSB) & _f##_MASK) @@ -607,6 +608,9 @@ struct ath12k { struct work_struct wmi_mgmt_tx_work; struct sk_buff_head wmi_mgmt_tx_queue; + struct ath12k_wow wow; + struct completion target_suspend; + bool target_suspend_ack; struct ath12k_per_peer_tx_stats peer_tx_stats; struct list_head ppdu_stats_info; u32 ppdu_stat_list_depth; @@ -767,6 +771,7 @@ struct ath12k_base { struct { struct completion wakeup_completed; + u32 wmi_conf_rx_decap_mode; } wow; struct ath12k_ce ce; diff --git a/drivers/net/wireless/ath/ath12k/htc.c b/drivers/net/wireless/ath/ath12k/htc.c index 2f2230f565bb..d13616bf07f4 100644 --- a/drivers/net/wireless/ath/ath12k/htc.c +++ b/drivers/net/wireless/ath/ath12k/htc.c @@ -244,6 +244,11 @@ static void ath12k_htc_suspend_complete(struct ath12k_base *ab, bool ack) complete(&ab->htc_suspend); } +static void ath12k_htc_wakeup_from_suspend(struct ath12k_base *ab) +{ + ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot wakeup from suspend is received\n"); +} + void ath12k_htc_rx_completion_handler(struct ath12k_base *ab, struct sk_buff *skb) { @@ -349,6 +354,7 @@ void ath12k_htc_rx_completion_handler(struct ath12k_base *ab, ath12k_htc_suspend_complete(ab, false); break; case ATH12K_HTC_MSG_WAKEUP_FROM_SUSPEND_ID: + ath12k_htc_wakeup_from_suspend(ab); break; default: ath12k_warn(ab, "ignoring unsolicited htc ep0 event %u\n", diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index 17b7fab03d50..59662ca241ca 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -15,6 +15,8 @@ #include "dp_rx.h" #include "peer.h" #include "debugfs.h" +#include "hif.h" +#include "wow.h" #define CHAN2G(_channel, _freq, _flags) { \ .band = NL80211_BAND_2GHZ, \ @@ -8578,6 +8580,12 @@ static const struct ieee80211_ops ath12k_ops = { .sta_statistics = ath12k_mac_op_sta_statistics, .remain_on_channel = ath12k_mac_op_remain_on_channel, .cancel_remain_on_channel = ath12k_mac_op_cancel_remain_on_channel, + +#ifdef CONFIG_PM + .suspend = ath12k_wow_op_suspend, + .resume = ath12k_wow_op_resume, + .set_wakeup = ath12k_wow_op_set_wakeup, +#endif }; static void ath12k_mac_update_ch_list(struct ath12k *ar, @@ -9100,6 +9108,12 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah) ieee80211_hw_set(hw, SUPPORT_FAST_XMIT); } + ret = ath12k_wow_init(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to init wow: %d\n", ret); + goto err_free_if_combs; + } + ret = ieee80211_register_hw(hw); if (ret) { ath12k_err(ab, "ieee80211 registration failed: %d\n", ret); diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c index 3eafa46d737b..f72ec153723c 100644 --- a/drivers/net/wireless/ath/ath12k/wmi.c +++ b/drivers/net/wireless/ath/ath12k/wmi.c @@ -3717,6 +3717,7 @@ int ath12k_wmi_cmd_init(struct ath12k_base *ab) arg.res_cfg.is_reg_cc_ext_event_supported = true; ab->hw_params->wmi_init(ab, &arg.res_cfg); + ab->wow.wmi_conf_rx_decap_mode = arg.res_cfg.rx_decap_mode; arg.num_mem_chunks = wmi_ab->num_mem_chunks; arg.hw_mode_id = wmi_ab->preferred_hw_mode; @@ -7464,3 +7465,145 @@ int ath12k_wmi_wow_enable(struct ath12k *ar) return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_WOW_ENABLE_CMDID); } + +int ath12k_wmi_wow_add_wakeup_event(struct ath12k *ar, u32 vdev_id, + enum wmi_wow_wakeup_event event, + u32 enable) +{ + struct wmi_wow_add_del_event_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_add_del_event_cmd *)skb->data; + cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_WOW_ADD_DEL_EVT_CMD, + sizeof(*cmd)); + cmd->vdev_id = cpu_to_le32(vdev_id); + cmd->is_add = cpu_to_le32(enable); + cmd->event_bitmap = cpu_to_le32((1 << event)); + + ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "wmi tlv wow add wakeup event %s enable %d vdev_id %d\n", + wow_wakeup_event(event), enable, vdev_id); + + return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_WOW_ENABLE_DISABLE_WAKE_EVENT_CMDID); +} + +int ath12k_wmi_wow_add_pattern(struct ath12k *ar, u32 vdev_id, u32 pattern_id, + const u8 *pattern, const u8 *mask, + int pattern_len, int pattern_offset) +{ + struct wmi_wow_add_pattern_cmd *cmd; + struct wmi_wow_bitmap_pattern_params *bitmap; + struct wmi_tlv *tlv; + struct sk_buff *skb; + void *ptr; + size_t len; + + len = sizeof(*cmd) + + sizeof(*tlv) + /* array struct */ + sizeof(*bitmap) + /* bitmap */ + sizeof(*tlv) + /* empty ipv4 sync */ + sizeof(*tlv) + /* empty ipv6 sync */ + sizeof(*tlv) + /* empty magic */ + sizeof(*tlv) + /* empty info timeout */ + sizeof(*tlv) + sizeof(u32); /* ratelimit interval */ + + skb = ath12k_wmi_alloc_skb(ar->wmi->wmi_ab, len); + if (!skb) + return -ENOMEM; + + /* cmd */ + ptr = skb->data; + cmd = ptr; + cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_WOW_ADD_PATTERN_CMD, + sizeof(*cmd)); + cmd->vdev_id = cpu_to_le32(vdev_id); + cmd->pattern_id = cpu_to_le32(pattern_id); + cmd->pattern_type = cpu_to_le32(WOW_BITMAP_PATTERN); + + ptr += sizeof(*cmd); + + /* bitmap */ + tlv = ptr; + tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_STRUCT, sizeof(*bitmap)); + + ptr += sizeof(*tlv); + + bitmap = ptr; + bitmap->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_WOW_BITMAP_PATTERN_T, + sizeof(*bitmap)); + memcpy(bitmap->patternbuf, pattern, pattern_len); + memcpy(bitmap->bitmaskbuf, mask, pattern_len); + bitmap->pattern_offset = cpu_to_le32(pattern_offset); + bitmap->pattern_len = cpu_to_le32(pattern_len); + bitmap->bitmask_len = cpu_to_le32(pattern_len); + bitmap->pattern_id = cpu_to_le32(pattern_id); + + ptr += sizeof(*bitmap); + + /* ipv4 sync */ + tlv = ptr; + tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_STRUCT, 0); + + ptr += sizeof(*tlv); + + /* ipv6 sync */ + tlv = ptr; + tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_STRUCT, 0); + + ptr += sizeof(*tlv); + + /* magic */ + tlv = ptr; + tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_STRUCT, 0); + + ptr += sizeof(*tlv); + + /* pattern info timeout */ + tlv = ptr; + tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_UINT32, 0); + + ptr += sizeof(*tlv); + + /* ratelimit interval */ + tlv = ptr; + tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_UINT32, sizeof(u32)); + + ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "wmi tlv wow add pattern vdev_id %d pattern_id %d pattern_offset %d pattern_len %d\n", + vdev_id, pattern_id, pattern_offset, pattern_len); + + ath12k_dbg_dump(ar->ab, ATH12K_DBG_WMI, NULL, "wow pattern: ", + bitmap->patternbuf, pattern_len); + ath12k_dbg_dump(ar->ab, ATH12K_DBG_WMI, NULL, "wow bitmask: ", + bitmap->bitmaskbuf, pattern_len); + + return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_WOW_ADD_WAKE_PATTERN_CMDID); +} + +int ath12k_wmi_wow_del_pattern(struct ath12k *ar, u32 vdev_id, u32 pattern_id) +{ + struct wmi_wow_del_pattern_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_del_pattern_cmd *)skb->data; + cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_WOW_DEL_PATTERN_CMD, + sizeof(*cmd)); + cmd->vdev_id = cpu_to_le32(vdev_id); + cmd->pattern_id = cpu_to_le32(pattern_id); + cmd->pattern_type = cpu_to_le32(WOW_BITMAP_PATTERN); + + ath12k_dbg(ar->ab, ATH12K_DBG_WMI, "wmi tlv wow del pattern vdev_id %d pattern_id %d\n", + vdev_id, pattern_id); + + return ath12k_wmi_cmd_send(ar->wmi, skb, WMI_WOW_DEL_WAKE_PATTERN_CMDID); +} diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h index 9cee3a114645..6cb06f6f7df4 100644 --- a/drivers/net/wireless/ath/ath12k/wmi.h +++ b/drivers/net/wireless/ath/ath12k/wmi.h @@ -5046,6 +5046,62 @@ static inline const char *wow_reason(enum wmi_wow_wake_reason reason) #undef C2S +#define WOW_DEFAULT_BITMAP_PATTERN_SIZE 148 +#define WOW_DEFAULT_BITMASK_SIZE 148 + +#define WOW_MIN_PATTERN_SIZE 1 +#define WOW_MAX_PATTERN_SIZE 148 +#define WOW_MAX_PKT_OFFSET 128 +#define WOW_HDR_LEN (sizeof(struct ieee80211_hdr_3addr) + \ + sizeof(struct rfc1042_hdr)) +#define WOW_MAX_REDUCE (WOW_HDR_LEN - sizeof(struct ethhdr) - \ + offsetof(struct ieee80211_hdr_3addr, addr1)) + +struct wmi_wow_bitmap_pattern_params { + __le32 tlv_header; + u8 patternbuf[WOW_DEFAULT_BITMAP_PATTERN_SIZE]; + u8 bitmaskbuf[WOW_DEFAULT_BITMASK_SIZE]; + __le32 pattern_offset; + __le32 pattern_len; + __le32 bitmask_len; + __le32 pattern_id; +} __packed; + +struct wmi_wow_add_pattern_cmd { + __le32 tlv_header; + __le32 vdev_id; + __le32 pattern_id; + __le32 pattern_type; +} __packed; + +struct wmi_wow_del_pattern_cmd { + __le32 tlv_header; + __le32 vdev_id; + __le32 pattern_id; + __le32 pattern_type; +} __packed; + +enum wmi_tlv_pattern_type { + WOW_PATTERN_MIN = 0, + WOW_BITMAP_PATTERN = WOW_PATTERN_MIN, + WOW_IPV4_SYNC_PATTERN, + WOW_IPV6_SYNC_PATTERN, + WOW_WILD_CARD_PATTERN, + WOW_TIMER_PATTERN, + WOW_MAGIC_PATTERN, + WOW_IPV6_RA_PATTERN, + WOW_IOAC_PKT_PATTERN, + WOW_IOAC_TMR_PATTERN, + WOW_PATTERN_MAX +}; + +struct wmi_wow_add_del_event_cmd { + __le32 tlv_header; + __le32 vdev_id; + __le32 is_add; + __le32 event_bitmap; +} __packed; + struct wmi_wow_enable_cmd { __le32 tlv_header; __le32 enable; @@ -5228,4 +5284,11 @@ ath12k_wmi_mac_phy_get_hw_link_id(const struct ath12k_wmi_mac_phy_caps_params *p int ath12k_wmi_wow_host_wakeup_ind(struct ath12k *ar); int ath12k_wmi_wow_enable(struct ath12k *ar); +int ath12k_wmi_wow_del_pattern(struct ath12k *ar, u32 vdev_id, u32 pattern_id); +int ath12k_wmi_wow_add_pattern(struct ath12k *ar, u32 vdev_id, u32 pattern_id, + const u8 *pattern, const u8 *mask, + int pattern_len, int pattern_offset); +int ath12k_wmi_wow_add_wakeup_event(struct ath12k *ar, u32 vdev_id, + enum wmi_wow_wakeup_event event, + u32 enable); #endif diff --git a/drivers/net/wireless/ath/ath12k/wow.c b/drivers/net/wireless/ath/ath12k/wow.c index d6d3ed7332ab..648e7cb970ea 100644 --- a/drivers/net/wireless/ath/ath12k/wow.c +++ b/drivers/net/wireless/ath/ath12k/wow.c @@ -7,12 +7,22 @@ #include #include "mac.h" + +#include #include "core.h" #include "hif.h" #include "debug.h" #include "wmi.h" #include "wow.h" +static const struct wiphy_wowlan_support ath12k_wowlan_support = { + .flags = WIPHY_WOWLAN_DISCONNECT | + WIPHY_WOWLAN_MAGIC_PKT, + .pattern_min_len = WOW_MIN_PATTERN_SIZE, + .pattern_max_len = WOW_MAX_PATTERN_SIZE, + .max_pkt_offset = WOW_MAX_PKT_OFFSET, +}; + int ath12k_wow_enable(struct ath12k *ar) { struct ath12k_base *ab = ar->ab; @@ -77,3 +87,409 @@ int ath12k_wow_wakeup(struct ath12k *ar) return 0; } + +static int ath12k_wow_vif_cleanup(struct ath12k_vif *arvif) +{ + struct ath12k *ar = arvif->ar; + int i, ret; + + for (i = 0; i < WOW_EVENT_MAX; i++) { + ret = ath12k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0); + if (ret) { + ath12k_warn(ar->ab, "failed to issue wow wakeup for event %s on vdev %i: %d\n", + wow_wakeup_event(i), arvif->vdev_id, ret); + return ret; + } + } + + for (i = 0; i < ar->wow.max_num_patterns; i++) { + ret = ath12k_wmi_wow_del_pattern(ar, arvif->vdev_id, i); + if (ret) { + ath12k_warn(ar->ab, "failed to delete wow pattern %d for vdev %i: %d\n", + i, arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_cleanup(struct ath12k *ar) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + ret = ath12k_wow_vif_cleanup(arvif); + if (ret) { + ath12k_warn(ar->ab, "failed to clean wow wakeups on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +/* Convert a 802.3 format to a 802.11 format. + * +------------+-----------+--------+----------------+ + * 802.3: |dest mac(6B)|src mac(6B)|type(2B)| body... | + * +------------+-----------+--------+----------------+ + * |__ |_______ |____________ |________ + * | | | | + * +--+------------+----+-----------+---------------+-----------+ + * 802.11: |4B|dest mac(6B)| 6B |src mac(6B)| 8B |type(2B)| body... | + * +--+------------+----+-----------+---------------+-----------+ + */ +static void +ath12k_wow_convert_8023_to_80211(struct ath12k *ar, + const struct cfg80211_pkt_pattern *eth_pattern, + struct ath12k_pkt_pattern *i80211_pattern) +{ + size_t r1042_eth_ofs = offsetof(struct rfc1042_hdr, eth_type); + size_t a1_ofs = offsetof(struct ieee80211_hdr_3addr, addr1); + size_t a3_ofs = offsetof(struct ieee80211_hdr_3addr, addr3); + size_t i80211_hdr_len = sizeof(struct ieee80211_hdr_3addr); + size_t prot_ofs = offsetof(struct ethhdr, h_proto); + size_t src_ofs = offsetof(struct ethhdr, h_source); + u8 eth_bytemask[WOW_MAX_PATTERN_SIZE] = {}; + const u8 *eth_pat = eth_pattern->pattern; + size_t eth_pat_len = eth_pattern->pattern_len; + size_t eth_pkt_ofs = eth_pattern->pkt_offset; + u8 *bytemask = i80211_pattern->bytemask; + u8 *pat = i80211_pattern->pattern; + size_t pat_len = 0; + size_t pkt_ofs = 0; + size_t delta; + int i; + + /* convert bitmask to bytemask */ + for (i = 0; i < eth_pat_len; i++) + if (eth_pattern->mask[i / 8] & BIT(i % 8)) + eth_bytemask[i] = 0xff; + + if (eth_pkt_ofs < ETH_ALEN) { + pkt_ofs = eth_pkt_ofs + a1_ofs; + + if (eth_pkt_ofs + eth_pat_len < ETH_ALEN) { + memcpy(pat, eth_pat, eth_pat_len); + memcpy(bytemask, eth_bytemask, eth_pat_len); + + pat_len = eth_pat_len; + } else if (eth_pkt_ofs + eth_pat_len < prot_ofs) { + memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs); + memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs); + + delta = eth_pkt_ofs + eth_pat_len - src_ofs; + memcpy(pat + a3_ofs - pkt_ofs, + eth_pat + ETH_ALEN - eth_pkt_ofs, + delta); + memcpy(bytemask + a3_ofs - pkt_ofs, + eth_bytemask + ETH_ALEN - eth_pkt_ofs, + delta); + + pat_len = a3_ofs - pkt_ofs + delta; + } else { + memcpy(pat, eth_pat, ETH_ALEN - eth_pkt_ofs); + memcpy(bytemask, eth_bytemask, ETH_ALEN - eth_pkt_ofs); + + memcpy(pat + a3_ofs - pkt_ofs, + eth_pat + ETH_ALEN - eth_pkt_ofs, + ETH_ALEN); + memcpy(bytemask + a3_ofs - pkt_ofs, + eth_bytemask + ETH_ALEN - eth_pkt_ofs, + ETH_ALEN); + + delta = eth_pkt_ofs + eth_pat_len - prot_ofs; + memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_pat + prot_ofs - eth_pkt_ofs, + delta); + memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_bytemask + prot_ofs - eth_pkt_ofs, + delta); + + pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta; + } + } else if (eth_pkt_ofs < prot_ofs) { + pkt_ofs = eth_pkt_ofs - ETH_ALEN + a3_ofs; + + if (eth_pkt_ofs + eth_pat_len < prot_ofs) { + memcpy(pat, eth_pat, eth_pat_len); + memcpy(bytemask, eth_bytemask, eth_pat_len); + + pat_len = eth_pat_len; + } else { + memcpy(pat, eth_pat, prot_ofs - eth_pkt_ofs); + memcpy(bytemask, eth_bytemask, prot_ofs - eth_pkt_ofs); + + delta = eth_pkt_ofs + eth_pat_len - prot_ofs; + memcpy(pat + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_pat + prot_ofs - eth_pkt_ofs, + delta); + memcpy(bytemask + i80211_hdr_len + r1042_eth_ofs - pkt_ofs, + eth_bytemask + prot_ofs - eth_pkt_ofs, + delta); + + pat_len = i80211_hdr_len + r1042_eth_ofs - pkt_ofs + delta; + } + } else { + pkt_ofs = eth_pkt_ofs - prot_ofs + i80211_hdr_len + r1042_eth_ofs; + + memcpy(pat, eth_pat, eth_pat_len); + memcpy(bytemask, eth_bytemask, eth_pat_len); + + pat_len = eth_pat_len; + } + + i80211_pattern->pattern_len = pat_len; + i80211_pattern->pkt_offset = pkt_ofs; +} + +static int ath12k_vif_wow_set_wakeups(struct ath12k_vif *arvif, + struct cfg80211_wowlan *wowlan) +{ + const struct cfg80211_pkt_pattern *patterns = wowlan->patterns; + struct ath12k *ar = arvif->ar; + unsigned long wow_mask = 0; + int pattern_id = 0; + int ret, i; + + /* Setup requested WOW features */ + switch (arvif->vdev_type) { + case WMI_VDEV_TYPE_IBSS: + __set_bit(WOW_BEACON_EVENT, &wow_mask); + fallthrough; + case WMI_VDEV_TYPE_AP: + __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); + __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); + __set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask); + __set_bit(WOW_AUTH_REQ_EVENT, &wow_mask); + __set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask); + __set_bit(WOW_HTT_EVENT, &wow_mask); + __set_bit(WOW_RA_MATCH_EVENT, &wow_mask); + break; + case WMI_VDEV_TYPE_STA: + if (wowlan->disconnect) { + __set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask); + __set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask); + __set_bit(WOW_BMISS_EVENT, &wow_mask); + __set_bit(WOW_CSA_IE_EVENT, &wow_mask); + } + + if (wowlan->magic_pkt) + __set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask); + break; + default: + break; + } + + for (i = 0; i < wowlan->n_patterns; i++) { + const struct cfg80211_pkt_pattern *eth_pattern = &patterns[i]; + struct ath12k_pkt_pattern new_pattern = {}; + + if (WARN_ON(eth_pattern->pattern_len > WOW_MAX_PATTERN_SIZE)) + return -EINVAL; + + if (ar->ab->wow.wmi_conf_rx_decap_mode == + ATH12K_HW_TXRX_NATIVE_WIFI) { + ath12k_wow_convert_8023_to_80211(ar, eth_pattern, + &new_pattern); + + if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE)) + return -EINVAL; + } else { + memcpy(new_pattern.pattern, eth_pattern->pattern, + eth_pattern->pattern_len); + + /* convert bitmask to bytemask */ + for (i = 0; i < eth_pattern->pattern_len; i++) + if (eth_pattern->mask[i / 8] & BIT(i % 8)) + new_pattern.bytemask[i] = 0xff; + + new_pattern.pattern_len = eth_pattern->pattern_len; + new_pattern.pkt_offset = eth_pattern->pkt_offset; + } + + ret = ath12k_wmi_wow_add_pattern(ar, arvif->vdev_id, + pattern_id, + new_pattern.pattern, + new_pattern.bytemask, + new_pattern.pattern_len, + new_pattern.pkt_offset); + if (ret) { + ath12k_warn(ar->ab, "failed to add pattern %i to vdev %i: %d\n", + pattern_id, + arvif->vdev_id, ret); + return ret; + } + + pattern_id++; + __set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask); + } + + for (i = 0; i < WOW_EVENT_MAX; i++) { + if (!test_bit(i, &wow_mask)) + continue; + ret = ath12k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1); + if (ret) { + ath12k_warn(ar->ab, "failed to enable wakeup event %s on vdev %i: %d\n", + wow_wakeup_event(i), arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +static int ath12k_wow_set_wakeups(struct ath12k *ar, + struct cfg80211_wowlan *wowlan) +{ + struct ath12k_vif *arvif; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + ret = ath12k_vif_wow_set_wakeups(arvif, wowlan); + if (ret) { + ath12k_warn(ar->ab, "failed to set wow wakeups on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + } + + return 0; +} + +int ath12k_wow_op_suspend(struct ieee80211_hw *hw, + struct cfg80211_wowlan *wowlan) +{ + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + int ret; + + mutex_lock(&ar->conf_mutex); + + ret = ath12k_wow_cleanup(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to clear wow wakeup events: %d\n", + ret); + goto exit; + } + + ret = ath12k_wow_set_wakeups(ar, wowlan); + if (ret) { + ath12k_warn(ar->ab, "failed to set wow wakeup events: %d\n", + ret); + goto cleanup; + } + + ret = ath12k_mac_wait_tx_complete(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to wait tx complete: %d\n", ret); + goto cleanup; + } + + ret = ath12k_wow_enable(ar); + if (ret) { + ath12k_warn(ar->ab, "failed to start wow: %d\n", ret); + goto cleanup; + } + + ath12k_hif_irq_disable(ar->ab); + ath12k_hif_ce_irq_disable(ar->ab); + + ret = ath12k_hif_suspend(ar->ab); + if (ret) { + ath12k_warn(ar->ab, "failed to suspend hif: %d\n", ret); + goto wakeup; + } + + goto exit; + +wakeup: + ath12k_wow_wakeup(ar); + +cleanup: + ath12k_wow_cleanup(ar); + +exit: + mutex_unlock(&ar->conf_mutex); + return ret ? 1 : 0; +} + +void ath12k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled) +{ + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + + mutex_lock(&ar->conf_mutex); + device_set_wakeup_enable(ar->ab->dev, enabled); + mutex_unlock(&ar->conf_mutex); +} + +int ath12k_wow_op_resume(struct ieee80211_hw *hw) +{ + struct ath12k_hw *ah = ath12k_hw_to_ah(hw); + struct ath12k *ar = ath12k_ah_to_ar(ah, 0); + int ret; + + mutex_lock(&ar->conf_mutex); + + ret = ath12k_hif_resume(ar->ab); + if (ret) { + ath12k_warn(ar->ab, "failed to resume hif: %d\n", ret); + goto exit; + } + + ath12k_hif_ce_irq_enable(ar->ab); + ath12k_hif_irq_enable(ar->ab); + + ret = ath12k_wow_wakeup(ar); + if (ret) + ath12k_warn(ar->ab, "failed to wakeup from wow: %d\n", ret); + +exit: + if (ret) { + switch (ah->state) { + case ATH12K_HW_STATE_ON: + ah->state = ATH12K_HW_STATE_RESTARTING; + ret = 1; + break; + case ATH12K_HW_STATE_OFF: + case ATH12K_HW_STATE_RESTARTING: + case ATH12K_HW_STATE_RESTARTED: + case ATH12K_HW_STATE_WEDGED: + ath12k_warn(ar->ab, "encountered unexpected device state %d on resume, cannot recover\n", + ah->state); + ret = -EIO; + break; + } + } + + mutex_unlock(&ar->conf_mutex); + return ret; +} + +int ath12k_wow_init(struct ath12k *ar) +{ + if (WARN_ON(!test_bit(WMI_TLV_SERVICE_WOW, ar->wmi->wmi_ab->svc_map))) + return -EINVAL; + + ar->wow.wowlan_support = ath12k_wowlan_support; + + if (ar->ab->wow.wmi_conf_rx_decap_mode == ATH12K_HW_TXRX_NATIVE_WIFI) { + ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE; + ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE; + } + + ar->wow.max_num_patterns = ATH12K_WOW_PATTERNS; + ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns; + ar->ah->hw->wiphy->wowlan = &ar->wow.wowlan_support; + + device_set_wakeup_capable(ar->ab->dev, true); + + return 0; +} diff --git a/drivers/net/wireless/ath/ath12k/wow.h b/drivers/net/wireless/ath/ath12k/wow.h index 6817ceaa4cfe..af9be5fadcc3 100644 --- a/drivers/net/wireless/ath/ath12k/wow.h +++ b/drivers/net/wireless/ath/ath12k/wow.h @@ -9,14 +9,46 @@ #define ATH12K_WOW_RETRY_NUM 10 #define ATH12K_WOW_RETRY_WAIT_MS 200 +#define ATH12K_WOW_PATTERNS 22 + +struct ath12k_wow { + u32 max_num_patterns; + struct completion wakeup_completed; + struct wiphy_wowlan_support wowlan_support; +}; + +struct ath12k_pkt_pattern { + u8 pattern[WOW_MAX_PATTERN_SIZE]; + u8 bytemask[WOW_MAX_PATTERN_SIZE]; + int pattern_len; + int pkt_offset; +}; + +struct rfc1042_hdr { + u8 llc_dsap; + u8 llc_ssap; + u8 llc_ctrl; + u8 snap_oui[3]; + __be16 eth_type; +} __packed; #ifdef CONFIG_PM +int ath12k_wow_init(struct ath12k *ar); +int ath12k_wow_op_suspend(struct ieee80211_hw *hw, + struct cfg80211_wowlan *wowlan); +int ath12k_wow_op_resume(struct ieee80211_hw *hw); +void ath12k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled); int ath12k_wow_enable(struct ath12k *ar); int ath12k_wow_wakeup(struct ath12k *ar); #else +static inline int ath12k_wow_init(struct ath12k *ar) +{ + return 0; +} + static inline int ath12k_wow_enable(struct ath12k *ar) { return 0;