From 3021ad9a4f009265e6063e617fb91306980af16c Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Tue, 5 Jan 2016 11:05:45 +0100 Subject: [PATCH] brcmfmac: Add wowl net detect support With wowl net detect it becomes possible to scan for specific ssids and wakeup once found. Reviewed-by: Arend Van Spriel Reviewed-by: Franky (Zhenhui) Lin Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: Kalle Valo --- .../broadcom/brcm80211/brcmfmac/cfg80211.c | 142 ++++++++++++++++-- .../broadcom/brcm80211/brcmfmac/cfg80211.h | 27 +++- .../broadcom/brcm80211/brcmfmac/fwil_types.h | 2 + 3 files changed, 155 insertions(+), 16 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c index 6a7759fcbd86..fd54ad141965 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c @@ -95,6 +95,8 @@ #define BRCMF_SCAN_UNASSOC_TIME 40 #define BRCMF_SCAN_PASSIVE_TIME 120 +#define BRCMF_ND_INFO_TIMEOUT msecs_to_jiffies(2000) + #define BRCMF_ASSOC_PARAMS_FIXED_SIZE \ (sizeof(struct brcmf_assoc_params_le) - sizeof(u16)) @@ -236,6 +238,17 @@ struct parsed_vndr_ies { struct parsed_vndr_ie_info ie_info[VNDR_IE_PARSE_LIMIT]; }; +/* Function prototype forward declarations */ +static int +brcmf_cfg80211_sched_scan_start(struct wiphy *wiphy, + struct net_device *ndev, + struct cfg80211_sched_scan_request *request); +static int brcmf_cfg80211_sched_scan_stop(struct wiphy *wiphy, + struct net_device *ndev); +static s32 +brcmf_notify_sched_scan_results(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, void *data); + static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf, struct cfg80211_chan_def *ch) @@ -3116,26 +3129,71 @@ static s32 brcmf_config_wowl_pattern(struct brcmf_if *ifp, u8 cmd[4], return ret; } +static s32 +brcmf_wowl_nd_results(struct brcmf_if *ifp, const struct brcmf_event_msg *e, + void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct brcmf_pno_scanresults_le *pfn_result; + struct brcmf_pno_net_info_le *netinfo; + + brcmf_dbg(SCAN, "Enter\n"); + + pfn_result = (struct brcmf_pno_scanresults_le *)data; + + if (e->event_code == BRCMF_E_PFN_NET_LOST) { + brcmf_dbg(SCAN, "PFN NET LOST event. Ignore\n"); + return 0; + } + + if (le32_to_cpu(pfn_result->count) < 1) { + brcmf_err("Invalid result count, expected 1 (%d)\n", + le32_to_cpu(pfn_result->count)); + return -EINVAL; + } + + data += sizeof(struct brcmf_pno_scanresults_le); + netinfo = (struct brcmf_pno_net_info_le *)data; + memcpy(cfg->wowl.nd->ssid.ssid, netinfo->SSID, netinfo->SSID_len); + cfg->wowl.nd->ssid.ssid_len = netinfo->SSID_len; + cfg->wowl.nd->n_channels = 1; + cfg->wowl.nd->channels[0] = + ieee80211_channel_to_frequency(netinfo->channel, + netinfo->channel <= CH_MAX_2G_CHANNEL ? + NL80211_BAND_2GHZ : NL80211_BAND_5GHZ); + cfg->wowl.nd_info->n_matches = 1; + cfg->wowl.nd_info->matches[0] = cfg->wowl.nd; + + /* Inform (the resume task) that the net detect information was recvd */ + cfg->wowl.nd_data_completed = true; + wake_up(&cfg->wowl.nd_data_wait); + + return 0; +} + #ifdef CONFIG_PM static void brcmf_report_wowl_wakeind(struct wiphy *wiphy, struct brcmf_if *ifp) { + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); struct brcmf_wowl_wakeind_le wake_ind_le; struct cfg80211_wowlan_wakeup wakeup_data; struct cfg80211_wowlan_wakeup *wakeup; u32 wakeind; s32 err; + int timeout; err = brcmf_fil_iovar_data_get(ifp, "wowl_wakeind", &wake_ind_le, sizeof(wake_ind_le)); - if (!err) { + if (err) { brcmf_err("Get wowl_wakeind failed, err = %d\n", err); return; } wakeind = le32_to_cpu(wake_ind_le.ucode_wakeind); if (wakeind & (BRCMF_WOWL_MAGIC | BRCMF_WOWL_DIS | BRCMF_WOWL_BCN | - BRCMF_WOWL_RETR | BRCMF_WOWL_NET)) { + BRCMF_WOWL_RETR | BRCMF_WOWL_NET | + BRCMF_WOWL_PFN_FOUND)) { wakeup = &wakeup_data; memset(&wakeup_data, 0, sizeof(wakeup_data)); wakeup_data.pattern_idx = -1; @@ -3163,6 +3221,16 @@ static void brcmf_report_wowl_wakeind(struct wiphy *wiphy, struct brcmf_if *ifp) */ wakeup_data.pattern_idx = 0; } + if (wakeind & BRCMF_WOWL_PFN_FOUND) { + brcmf_dbg(INFO, "WOWL Wake indicator: BRCMF_WOWL_PFN_FOUND\n"); + timeout = wait_event_timeout(cfg->wowl.nd_data_wait, + cfg->wowl.nd_data_completed, + BRCMF_ND_INFO_TIMEOUT); + if (!timeout) + brcmf_err("No result for wowl net detect\n"); + else + wakeup_data.net_detect = cfg->wowl.nd_info; + } } else { wakeup = NULL; } @@ -3185,14 +3253,21 @@ static s32 brcmf_cfg80211_resume(struct wiphy *wiphy) brcmf_dbg(TRACE, "Enter\n"); - if (cfg->wowl_enabled) { + if (cfg->wowl.active) { brcmf_report_wowl_wakeind(wiphy, ifp); brcmf_fil_iovar_int_set(ifp, "wowl_clear", 0); brcmf_config_wowl_pattern(ifp, "clr", NULL, 0, NULL, 0); brcmf_configure_arp_offload(ifp, true); brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PM, - cfg->pre_wowl_pmmode); - cfg->wowl_enabled = false; + cfg->wowl.pre_pmmode); + cfg->wowl.active = false; + if (cfg->wowl.nd_enabled) { + brcmf_cfg80211_sched_scan_stop(cfg->wiphy, ifp->ndev); + brcmf_fweh_unregister(cfg->pub, BRCMF_E_PFN_NET_FOUND); + brcmf_fweh_register(cfg->pub, BRCMF_E_PFN_NET_FOUND, + brcmf_notify_sched_scan_results); + cfg->wowl.nd_enabled = false; + } } return 0; } @@ -3207,7 +3282,7 @@ static void brcmf_configure_wowl(struct brcmf_cfg80211_info *cfg, brcmf_dbg(TRACE, "Suspend, wowl config.\n"); brcmf_configure_arp_offload(ifp, false); - brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_PM, &cfg->pre_wowl_pmmode); + brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_PM, &cfg->wowl.pre_pmmode); brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PM, PM_MAX); wowl_config = 0; @@ -3225,11 +3300,26 @@ static void brcmf_configure_wowl(struct brcmf_cfg80211_info *cfg, wowl->patterns[i].pkt_offset); } } + if (wowl->nd_config) { + brcmf_cfg80211_sched_scan_start(cfg->wiphy, ifp->ndev, + wowl->nd_config); + wowl_config |= BRCMF_WOWL_PFN_FOUND; + + cfg->wowl.nd_data_completed = false; + cfg->wowl.nd_enabled = true; + /* Now reroute the event for PFN to the wowl function. */ + brcmf_fweh_unregister(cfg->pub, BRCMF_E_PFN_NET_FOUND); + brcmf_fweh_register(cfg->pub, BRCMF_E_PFN_NET_FOUND, + brcmf_wowl_nd_results); + } + if (!test_bit(BRCMF_VIF_STATUS_CONNECTED, &ifp->vif->sme_state)) + wowl_config |= BRCMF_WOWL_UNASSOC; + brcmf_fil_iovar_data_set(ifp, "wowl_wakeind", "clear", strlen("clear")); brcmf_fil_iovar_int_set(ifp, "wowl", wowl_config); brcmf_fil_iovar_int_set(ifp, "wowl_activate", 1); brcmf_bus_wowl_config(cfg->pub->bus_if, true); - cfg->wowl_enabled = true; + cfg->wowl.active = true; } static s32 brcmf_cfg80211_suspend(struct wiphy *wiphy, @@ -3248,6 +3338,10 @@ static s32 brcmf_cfg80211_suspend(struct wiphy *wiphy, if (!check_vif_up(ifp->vif)) goto exit; + /* Stop scheduled scan */ + if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_PNO)) + brcmf_cfg80211_sched_scan_stop(wiphy, ndev); + /* end any scanning */ if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) brcmf_abort_scanning(cfg); @@ -5329,6 +5423,10 @@ static void brcmf_deinit_priv_mem(struct brcmf_cfg80211_info *cfg) cfg->escan_ioctl_buf = NULL; kfree(cfg->extra_buf); cfg->extra_buf = NULL; + kfree(cfg->wowl.nd); + cfg->wowl.nd = NULL; + kfree(cfg->wowl.nd_info); + cfg->wowl.nd_info = NULL; } static s32 brcmf_init_priv_mem(struct brcmf_cfg80211_info *cfg) @@ -5342,6 +5440,14 @@ static s32 brcmf_init_priv_mem(struct brcmf_cfg80211_info *cfg) cfg->extra_buf = kzalloc(WL_EXTRA_BUF_MAX, GFP_KERNEL); if (!cfg->extra_buf) goto init_priv_mem_out; + cfg->wowl.nd = kzalloc(sizeof(*cfg->wowl.nd) + sizeof(u32), GFP_KERNEL); + if (!cfg->wowl.nd) + goto init_priv_mem_out; + cfg->wowl.nd_info = kzalloc(sizeof(*cfg->wowl.nd_info) + + sizeof(struct cfg80211_wowlan_nd_match *), + GFP_KERNEL); + if (!cfg->wowl.nd_info) + goto init_priv_mem_out; return 0; @@ -6018,7 +6124,7 @@ static void brcmf_wiphy_pno_params(struct wiphy *wiphy) } #ifdef CONFIG_PM -static const struct wiphy_wowlan_support brcmf_wowlan_support = { +static struct wiphy_wowlan_support brcmf_wowlan_support = { .flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT, .n_patterns = BRCMF_WOWL_MAXPATTERNS, .pattern_max_len = BRCMF_WOWL_MAXPATTERNSIZE, @@ -6027,10 +6133,23 @@ static const struct wiphy_wowlan_support brcmf_wowlan_support = { }; #endif -static void brcmf_wiphy_wowl_params(struct wiphy *wiphy) +static void brcmf_wiphy_wowl_params(struct wiphy *wiphy, struct brcmf_if *ifp) { #ifdef CONFIG_PM - /* wowl settings */ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + s32 err; + u32 wowl_cap; + + if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_PNO)) { + err = brcmf_fil_iovar_int_get(ifp, "wowl_cap", &wowl_cap); + if (!err) { + if (wowl_cap & BRCMF_WOWL_PFN_FOUND) { + brcmf_wowlan_support.flags |= + WIPHY_WOWLAN_NET_DETECT; + init_waitqueue_head(&cfg->wowl.nd_data_wait); + } + } + } wiphy->wowlan = &brcmf_wowlan_support; #endif } @@ -6091,8 +6210,7 @@ static int brcmf_setup_wiphy(struct wiphy *wiphy, struct brcmf_if *ifp) wiphy->n_vendor_commands = BRCMF_VNDR_CMDS_LAST - 1; if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_WOWL)) - brcmf_wiphy_wowl_params(wiphy); - + brcmf_wiphy_wowl_params(wiphy, ifp); err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BANDLIST, &bandlist, sizeof(bandlist)); if (err) { diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h index c17b6d584fe0..69af708b43f5 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.h @@ -226,6 +226,27 @@ struct brcmf_cfg80211_vif_event { struct brcmf_cfg80211_vif *vif; }; +/** + * struct brcmf_cfg80211_wowl - wowl related information. + * + * @active: set on suspend, cleared on resume. + * @pre_pmmode: firmware PM mode at entering suspend. + * @nd: net dectect data. + * @nd_info: helper struct to pass to cfg80211. + * @nd_data_wait: wait queue to sync net detect data. + * @nd_data_completed: completion for net detect data. + * @nd_enabled: net detect enabled. + */ +struct brcmf_cfg80211_wowl { + bool active; + u32 pre_pmmode; + struct cfg80211_wowlan_nd_match *nd; + struct cfg80211_wowlan_nd_info *nd_info; + wait_queue_head_t nd_data_wait; + bool nd_data_completed; + bool nd_enabled; +}; + /** * struct brcmf_cfg80211_info - dongle private data of cfg80211 interface * @@ -259,8 +280,7 @@ struct brcmf_cfg80211_vif_event { * @vif_list: linked list of vif instances. * @vif_cnt: number of vif instances. * @vif_event: vif event signalling. - * @wowl_enabled; set during suspend, is wowl used. - * @pre_wowl_pmmode: intermediate storage of pm mode during wowl. + * @wowl: wowl related information. */ struct brcmf_cfg80211_info { struct wiphy *wiphy; @@ -292,9 +312,8 @@ struct brcmf_cfg80211_info { struct brcmf_cfg80211_vif_event vif_event; struct completion vif_disabled; struct brcmu_d11inf d11inf; - bool wowl_enabled; - u32 pre_wowl_pmmode; struct brcmf_assoclist_le assoclist; + struct brcmf_cfg80211_wowl wowl; }; /** diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h index bf2df49d7098..1afc2ad83b6c 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h @@ -110,6 +110,8 @@ #define BRCMF_WOWL_UNASSOC (1 << 24) /* Wakeup if received matched secured pattern: */ #define BRCMF_WOWL_SECURE (1 << 25) +/* Wakeup on finding preferred network */ +#define BRCMF_WOWL_PFN_FOUND (1 << 26) /* Link Down indication in WoWL mode: */ #define BRCMF_WOWL_LINKDOWN (1 << 31) -- 2.20.1