diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/main.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmsmac/main.c | 362 |
1 files changed, 267 insertions, 95 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c index 0c8e998bfb1e..59d438409dfb 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2010 Broadcom Corporation + * Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -448,6 +449,10 @@ static void brcms_c_detach_mfree(struct brcms_c_info *wlc) kfree(wlc->corestate); kfree(wlc->hw->bandstate[0]); kfree(wlc->hw); + if (wlc->beacon) + dev_kfree_skb_any(wlc->beacon); + if (wlc->probe_resp) + dev_kfree_skb_any(wlc->probe_resp); /* free the wlc */ kfree(wlc); @@ -1069,7 +1074,7 @@ brcms_b_txstatus(struct brcms_hardware *wlc_hw, bool bound, bool *fatal) static void brcms_c_tbtt(struct brcms_c_info *wlc) { - if (!wlc->bsscfg->BSS) + if (wlc->bsscfg->type == BRCMS_TYPE_ADHOC) /* * DirFrmQ is now valid...defer setting until end * of ATIM window @@ -2163,6 +2168,32 @@ void brcms_b_switch_macfreq(struct brcms_hardware *wlc_hw, u8 spurmode) } } +void brcms_c_start_station(struct brcms_c_info *wlc, u8 *addr) +{ + memcpy(wlc->pub->cur_etheraddr, addr, sizeof(wlc->pub->cur_etheraddr)); + wlc->bsscfg->type = BRCMS_TYPE_STATION; +} + +void brcms_c_start_ap(struct brcms_c_info *wlc, u8 *addr, const u8 *bssid, + u8 *ssid, size_t ssid_len) +{ + brcms_c_set_ssid(wlc, ssid, ssid_len); + + memcpy(wlc->pub->cur_etheraddr, addr, sizeof(wlc->pub->cur_etheraddr)); + memcpy(wlc->bsscfg->BSSID, bssid, sizeof(wlc->bsscfg->BSSID)); + wlc->bsscfg->type = BRCMS_TYPE_AP; + + brcms_b_mctrl(wlc->hw, MCTL_AP | MCTL_INFRA, MCTL_AP | MCTL_INFRA); +} + +void brcms_c_start_adhoc(struct brcms_c_info *wlc, u8 *addr) +{ + memcpy(wlc->pub->cur_etheraddr, addr, sizeof(wlc->pub->cur_etheraddr)); + wlc->bsscfg->type = BRCMS_TYPE_ADHOC; + + brcms_b_mctrl(wlc->hw, MCTL_AP | MCTL_INFRA, 0); +} + /* Initialize GPIOs that are controlled by D11 core */ static void brcms_c_gpio_init(struct brcms_c_info *wlc) { @@ -3043,8 +3074,6 @@ static void brcms_b_antsel_set(struct brcms_hardware *wlc_hw, u32 antsel_avail) */ static bool brcms_c_ps_allowed(struct brcms_c_info *wlc) { - struct brcms_bss_cfg *cfg = wlc->bsscfg; - /* disallow PS when one of the following global conditions meets */ if (!wlc->pub->associated) return false; @@ -3053,16 +3082,11 @@ static bool brcms_c_ps_allowed(struct brcms_c_info *wlc) if (wlc->filter_flags & FIF_PROMISC_IN_BSS) return false; - if (cfg->associated) { - /* - * disallow PS when one of the following - * bsscfg specific conditions meets - */ - if (!cfg->BSS) - return false; + if (wlc->bsscfg->type == BRCMS_TYPE_AP) + return false; + if (wlc->bsscfg->type == BRCMS_TYPE_ADHOC) return false; - } return true; } @@ -3771,7 +3795,7 @@ static int brcms_c_set_mac(struct brcms_bss_cfg *bsscfg) struct brcms_c_info *wlc = bsscfg->wlc; /* enter the MAC addr into the RXE match registers */ - brcms_c_set_addrmatch(wlc, RCM_MAC_OFFSET, bsscfg->cur_etheraddr); + brcms_c_set_addrmatch(wlc, RCM_MAC_OFFSET, wlc->pub->cur_etheraddr); brcms_c_ampdu_macaddr_upd(wlc); @@ -3787,6 +3811,15 @@ static void brcms_c_set_bssid(struct brcms_bss_cfg *bsscfg) brcms_c_set_addrmatch(bsscfg->wlc, RCM_BSSID_OFFSET, bsscfg->BSSID); } +void brcms_c_set_ssid(struct brcms_c_info *wlc, u8 *ssid, size_t ssid_len) +{ + u8 len = min_t(u8, sizeof(wlc->bsscfg->SSID), ssid_len); + memset(wlc->bsscfg->SSID, 0, sizeof(wlc->bsscfg->SSID)); + + memcpy(wlc->bsscfg->SSID, ssid, len); + wlc->bsscfg->SSID_len = len; +} + static void brcms_b_set_shortslot(struct brcms_hardware *wlc_hw, bool shortslot) { wlc_hw->shortslot = shortslot; @@ -3821,7 +3854,7 @@ static void brcms_c_set_home_chanspec(struct brcms_c_info *wlc, u16 chanspec) if (wlc->home_chanspec != chanspec) { wlc->home_chanspec = chanspec; - if (wlc->bsscfg->associated) + if (wlc->pub->associated) wlc->bsscfg->current_bss->chanspec = chanspec; } } @@ -4091,10 +4124,14 @@ void brcms_c_wme_setparams(struct brcms_c_info *wlc, u16 aci, *shm_entry++); } - if (suspend) { + if (suspend) brcms_c_suspend_mac_and_wait(wlc); + + brcms_c_update_beacon(wlc); + brcms_c_update_probe_resp(wlc, false); + + if (suspend) brcms_c_enable_mac(wlc); - } } static void brcms_c_edcf_setparams(struct brcms_c_info *wlc, bool suspend) @@ -4332,7 +4369,6 @@ static void brcms_c_info_init(struct brcms_c_info *wlc, int unit) /* WME QoS mode is Auto by default */ wlc->pub->_ampdu = AMPDU_AGG_HOST; - wlc->pub->bcmerror = 0; } static uint brcms_c_attach_module(struct brcms_c_info *wlc) @@ -5072,8 +5108,8 @@ int brcms_c_up(struct brcms_c_info *wlc) struct brcms_bss_cfg *bsscfg = wlc->bsscfg; mboolset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE); - - if (bsscfg->enable && bsscfg->BSS) + if (bsscfg->type == BRCMS_TYPE_STATION || + bsscfg->type == BRCMS_TYPE_ADHOC) brcms_err(wlc->hw->d11core, "wl%d: up: rfdisable -> " "bsscfg_disable()\n", @@ -5434,7 +5470,7 @@ static void brcms_c_ofdm_rateset_war(struct brcms_c_info *wlc) u8 r; bool war = false; - if (wlc->bsscfg->associated) + if (wlc->pub->associated) r = wlc->bsscfg->current_bss->rateset.rates[0]; else r = wlc->default_bss->rateset.rates[0]; @@ -5528,7 +5564,7 @@ int brcms_c_set_rateset(struct brcms_c_info *wlc, struct brcm_rateset *rs) /* merge rateset coming in with the current mcsset */ if (wlc->pub->_n_enab & SUPPORT_11N) { struct brcms_bss_info *mcsset_bss; - if (wlc->bsscfg->associated) + if (wlc->pub->associated) mcsset_bss = wlc->bsscfg->current_bss; else mcsset_bss = wlc->default_bss; @@ -5543,12 +5579,36 @@ int brcms_c_set_rateset(struct brcms_c_info *wlc, struct brcm_rateset *rs) return bcmerror; } +static void brcms_c_time_lock(struct brcms_c_info *wlc) +{ + bcma_set32(wlc->hw->d11core, D11REGOFFS(maccontrol), MCTL_TBTTHOLD); + /* Commit the write */ + bcma_read32(wlc->hw->d11core, D11REGOFFS(maccontrol)); +} + +static void brcms_c_time_unlock(struct brcms_c_info *wlc) +{ + bcma_mask32(wlc->hw->d11core, D11REGOFFS(maccontrol), ~MCTL_TBTTHOLD); + /* Commit the write */ + bcma_read32(wlc->hw->d11core, D11REGOFFS(maccontrol)); +} + int brcms_c_set_beacon_period(struct brcms_c_info *wlc, u16 period) { + u32 bcnint_us; + if (period == 0) return -EINVAL; wlc->default_bss->beacon_period = period; + + bcnint_us = period << 10; + brcms_c_time_lock(wlc); + bcma_write32(wlc->hw->d11core, D11REGOFFS(tsf_cfprep), + (bcnint_us << CFPREP_CBI_SHIFT)); + bcma_write32(wlc->hw->d11core, D11REGOFFS(tsf_cfpstart), bcnint_us); + brcms_c_time_unlock(wlc); + return 0; } @@ -7291,72 +7351,110 @@ brcms_c_mod_prb_rsp_rate_table(struct brcms_c_info *wlc, uint frame_len) } } -/* Max buffering needed for beacon template/prb resp template is 142 bytes. - * - * PLCP header is 6 bytes. - * 802.11 A3 header is 24 bytes. - * Max beacon frame body template length is 112 bytes. - * Max probe resp frame body template length is 110 bytes. - * - * *len on input contains the max length of the packet available. - * - * The *len value is set to the number of bytes in buf used, and starts - * with the PLCP and included up to, but not including, the 4 byte FCS. - */ -static void -brcms_c_bcn_prb_template(struct brcms_c_info *wlc, u16 type, - u32 bcn_rspec, - struct brcms_bss_cfg *cfg, u16 *buf, int *len) +int brcms_c_get_header_len(void) { - static const u8 ether_bcast[ETH_ALEN] = {255, 255, 255, 255, 255, 255}; - struct cck_phy_hdr *plcp; - struct ieee80211_mgmt *h; - int hdr_len, body_len; - - hdr_len = D11_PHY_HDR_LEN + DOT11_MAC_HDR_LEN; + return TXOFF; +} - /* calc buffer size provided for frame body */ - body_len = *len - hdr_len; - /* return actual size */ - *len = hdr_len + body_len; +static void brcms_c_beacon_write(struct brcms_c_info *wlc, + struct sk_buff *beacon, u16 tim_offset, + u16 dtim_period, bool bcn0, bool bcn1) +{ + size_t len; + struct ieee80211_tx_info *tx_info; + struct brcms_hardware *wlc_hw = wlc->hw; + struct ieee80211_hw *ieee_hw = brcms_c_pub(wlc)->ieee_hw; - /* format PHY and MAC headers */ - memset(buf, 0, hdr_len); + /* Get tx_info */ + tx_info = IEEE80211_SKB_CB(beacon); - plcp = (struct cck_phy_hdr *) buf; + len = min_t(size_t, beacon->len, BCN_TMPL_LEN); + wlc->bcn_rspec = ieee80211_get_tx_rate(ieee_hw, tx_info)->hw_value; - /* - * PLCP for Probe Response frames are filled in from - * core's rate table - */ - if (type == IEEE80211_STYPE_BEACON) - /* fill in PLCP */ - brcms_c_compute_plcp(wlc, bcn_rspec, - (DOT11_MAC_HDR_LEN + body_len + FCS_LEN), - (u8 *) plcp); + brcms_c_compute_plcp(wlc, wlc->bcn_rspec, + len + FCS_LEN - D11_PHY_HDR_LEN, beacon->data); /* "Regular" and 16 MBSS but not for 4 MBSS */ /* Update the phytxctl for the beacon based on the rspec */ - brcms_c_beacon_phytxctl_txant_upd(wlc, bcn_rspec); + brcms_c_beacon_phytxctl_txant_upd(wlc, wlc->bcn_rspec); - h = (struct ieee80211_mgmt *)&plcp[1]; + if (bcn0) { + /* write the probe response into the template region */ + brcms_b_write_template_ram(wlc_hw, T_BCN0_TPL_BASE, + (len + 3) & ~3, beacon->data); - /* fill in 802.11 header */ - h->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | type); + /* write beacon length to SCR */ + brcms_b_write_shm(wlc_hw, M_BCN0_FRM_BYTESZ, (u16) len); + } + if (bcn1) { + /* write the probe response into the template region */ + brcms_b_write_template_ram(wlc_hw, T_BCN1_TPL_BASE, + (len + 3) & ~3, beacon->data); - /* DUR is 0 for multicast bcn, or filled in by MAC for prb resp */ - /* A1 filled in by MAC for prb resp, broadcast for bcn */ - if (type == IEEE80211_STYPE_BEACON) - memcpy(&h->da, ðer_bcast, ETH_ALEN); - memcpy(&h->sa, &cfg->cur_etheraddr, ETH_ALEN); - memcpy(&h->bssid, &cfg->BSSID, ETH_ALEN); + /* write beacon length to SCR */ + brcms_b_write_shm(wlc_hw, M_BCN1_FRM_BYTESZ, (u16) len); + } - /* SEQ filled in by MAC */ + if (tim_offset != 0) { + brcms_b_write_shm(wlc_hw, M_TIMBPOS_INBEACON, + tim_offset + D11B_PHY_HDR_LEN); + brcms_b_write_shm(wlc_hw, M_DOT11_DTIMPERIOD, dtim_period); + } else { + brcms_b_write_shm(wlc_hw, M_TIMBPOS_INBEACON, + len + D11B_PHY_HDR_LEN); + brcms_b_write_shm(wlc_hw, M_DOT11_DTIMPERIOD, 0); + } } -int brcms_c_get_header_len(void) +static void brcms_c_update_beacon_hw(struct brcms_c_info *wlc, + struct sk_buff *beacon, u16 tim_offset, + u16 dtim_period) { - return TXOFF; + struct brcms_hardware *wlc_hw = wlc->hw; + struct bcma_device *core = wlc_hw->d11core; + + /* Hardware beaconing for this config */ + u32 both_valid = MCMD_BCN0VLD | MCMD_BCN1VLD; + + /* Check if both templates are in use, if so sched. an interrupt + * that will call back into this routine + */ + if ((bcma_read32(core, D11REGOFFS(maccommand)) & both_valid) == both_valid) + /* clear any previous status */ + bcma_write32(core, D11REGOFFS(macintstatus), MI_BCNTPL); + + if (wlc->beacon_template_virgin) { + wlc->beacon_template_virgin = false; + brcms_c_beacon_write(wlc, beacon, tim_offset, dtim_period, true, + true); + /* mark beacon0 valid */ + bcma_set32(core, D11REGOFFS(maccommand), MCMD_BCN0VLD); + return; + } + + /* Check that after scheduling the interrupt both of the + * templates are still busy. if not clear the int. & remask + */ + if ((bcma_read32(core, D11REGOFFS(maccommand)) & both_valid) == both_valid) { + wlc->defmacintmask |= MI_BCNTPL; + return; + } + + if (!(bcma_read32(core, D11REGOFFS(maccommand)) & MCMD_BCN0VLD)) { + brcms_c_beacon_write(wlc, beacon, tim_offset, dtim_period, true, + false); + /* mark beacon0 valid */ + bcma_set32(core, D11REGOFFS(maccommand), MCMD_BCN0VLD); + return; + } + if (!(bcma_read32(core, D11REGOFFS(maccommand)) & MCMD_BCN1VLD)) { + brcms_c_beacon_write(wlc, beacon, tim_offset, dtim_period, + false, true); + /* mark beacon0 valid */ + bcma_set32(core, D11REGOFFS(maccommand), MCMD_BCN1VLD); + return; + } + return; } /* @@ -7366,9 +7464,57 @@ void brcms_c_update_beacon(struct brcms_c_info *wlc) { struct brcms_bss_cfg *bsscfg = wlc->bsscfg; - if (bsscfg->up && !bsscfg->BSS) + if (wlc->pub->up && (bsscfg->type == BRCMS_TYPE_AP || + bsscfg->type == BRCMS_TYPE_ADHOC)) { /* Clear the soft intmask */ wlc->defmacintmask &= ~MI_BCNTPL; + if (!wlc->beacon) + return; + brcms_c_update_beacon_hw(wlc, wlc->beacon, + wlc->beacon_tim_offset, + wlc->beacon_dtim_period); + } +} + +void brcms_c_set_new_beacon(struct brcms_c_info *wlc, struct sk_buff *beacon, + u16 tim_offset, u16 dtim_period) +{ + if (!beacon) + return; + if (wlc->beacon) + dev_kfree_skb_any(wlc->beacon); + wlc->beacon = beacon; + + /* add PLCP */ + skb_push(wlc->beacon, D11_PHY_HDR_LEN); + wlc->beacon_tim_offset = tim_offset; + wlc->beacon_dtim_period = dtim_period; + brcms_c_update_beacon(wlc); +} + +void brcms_c_set_new_probe_resp(struct brcms_c_info *wlc, + struct sk_buff *probe_resp) +{ + if (!probe_resp) + return; + if (wlc->probe_resp) + dev_kfree_skb_any(wlc->probe_resp); + wlc->probe_resp = probe_resp; + + /* add PLCP */ + skb_push(wlc->probe_resp, D11_PHY_HDR_LEN); + brcms_c_update_probe_resp(wlc, false); +} + +void brcms_c_enable_probe_resp(struct brcms_c_info *wlc, bool enable) +{ + /* + * prevent ucode from sending probe responses by setting the timeout + * to 1, it can not send it in that time frame. + */ + wlc->prb_resp_timeout = enable ? BRCMS_PRB_RESP_TIMEOUT : 1; + brcms_b_write_shm(wlc->hw, M_PRS_MAXTIME, wlc->prb_resp_timeout); + /* TODO: if (enable) => also deactivate receiving of probe request */ } /* Write ssid into shared memory */ @@ -7390,30 +7536,19 @@ brcms_c_shm_ssid_upd(struct brcms_c_info *wlc, struct brcms_bss_cfg *cfg) static void brcms_c_bss_update_probe_resp(struct brcms_c_info *wlc, struct brcms_bss_cfg *cfg, + struct sk_buff *probe_resp, bool suspend) { - u16 *prb_resp; - int len = BCN_TMPL_LEN; - - prb_resp = kmalloc(BCN_TMPL_LEN, GFP_ATOMIC); - if (!prb_resp) - return; - - /* - * write the probe response to hardware, or save in - * the config structure - */ + int len; - /* create the probe response template */ - brcms_c_bcn_prb_template(wlc, IEEE80211_STYPE_PROBE_RESP, 0, - cfg, prb_resp, &len); + len = min_t(size_t, probe_resp->len, BCN_TMPL_LEN); if (suspend) brcms_c_suspend_mac_and_wait(wlc); /* write the probe response into the template region */ brcms_b_write_template_ram(wlc->hw, T_PRS_TPL_BASE, - (len + 3) & ~3, prb_resp); + (len + 3) & ~3, probe_resp->data); /* write the length of the probe response frame (+PLCP/-FCS) */ brcms_b_write_shm(wlc->hw, M_PRB_RESP_FRM_LEN, (u16) len); @@ -7427,13 +7562,11 @@ brcms_c_bss_update_probe_resp(struct brcms_c_info *wlc, * PLCP header for the call to brcms_c_mod_prb_rsp_rate_table() * by subtracting the PLCP len and adding the FCS. */ - len += (-D11_PHY_HDR_LEN + FCS_LEN); - brcms_c_mod_prb_rsp_rate_table(wlc, (u16) len); + brcms_c_mod_prb_rsp_rate_table(wlc, + (u16)len + FCS_LEN - D11_PHY_HDR_LEN); if (suspend) brcms_c_enable_mac(wlc); - - kfree(prb_resp); } void brcms_c_update_probe_resp(struct brcms_c_info *wlc, bool suspend) @@ -7441,8 +7574,13 @@ void brcms_c_update_probe_resp(struct brcms_c_info *wlc, bool suspend) struct brcms_bss_cfg *bsscfg = wlc->bsscfg; /* update AP or IBSS probe responses */ - if (bsscfg->up && !bsscfg->BSS) - brcms_c_bss_update_probe_resp(wlc, bsscfg, suspend); + if (wlc->pub->up && (bsscfg->type == BRCMS_TYPE_AP || + bsscfg->type == BRCMS_TYPE_ADHOC)) { + if (!wlc->probe_resp) + return; + brcms_c_bss_update_probe_resp(wlc, bsscfg, wlc->probe_resp, + suspend); + } } int brcms_b_xmtfifo_sz_get(struct brcms_hardware *wlc_hw, uint fifo, @@ -7481,7 +7619,6 @@ void brcms_c_scan_stop(struct brcms_c_info *wlc) void brcms_c_associate_upd(struct brcms_c_info *wlc, bool state) { wlc->pub->associated = state; - wlc->bsscfg->associated = state; } /* @@ -7526,6 +7663,36 @@ void brcms_c_set_beacon_listen_interval(struct brcms_c_info *wlc, u8 interval) brcms_c_bcn_li_upd(wlc); } +u64 brcms_c_tsf_get(struct brcms_c_info *wlc) +{ + u32 tsf_h, tsf_l; + u64 tsf; + + brcms_b_read_tsf(wlc->hw, &tsf_l, &tsf_h); + + tsf = tsf_h; + tsf <<= 32; + tsf |= tsf_l; + + return tsf; +} + +void brcms_c_tsf_set(struct brcms_c_info *wlc, u64 tsf) +{ + u32 tsf_h, tsf_l; + + brcms_c_time_lock(wlc); + + tsf_l = tsf; + tsf_h = (tsf >> 32); + + /* read the tsf timer low, then high to get an atomic read */ + bcma_write32(wlc->hw->d11core, D11REGOFFS(tsf_timerlow), tsf_l); + bcma_write32(wlc->hw->d11core, D11REGOFFS(tsf_timerhigh), tsf_h); + + brcms_c_time_unlock(wlc); +} + int brcms_c_set_tx_power(struct brcms_c_info *wlc, int txpwr) { uint qdbm; @@ -7737,6 +7904,10 @@ bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded) brcms_rfkill_set_hw_state(wlc->wl); } + /* BCN template is available */ + if (macintstatus & MI_BCNTPL) + brcms_c_update_beacon(wlc); + /* it isn't done and needs to be resched if macintstatus is non-zero */ return wlc->macintstatus != 0; @@ -7765,7 +7936,7 @@ void brcms_c_init(struct brcms_c_info *wlc, bool mute_tx) brcms_c_set_bssid(wlc->bsscfg); /* Update tsf_cfprep if associated and up */ - if (wlc->pub->associated && wlc->bsscfg->up) { + if (wlc->pub->associated && wlc->pub->up) { u32 bi; /* get beacon period and convert to uS */ @@ -7873,6 +8044,7 @@ brcms_c_attach(struct brcms_info *wl, struct bcma_device *core, uint unit, pub->unit = unit; pub->_piomode = piomode; wlc->bandinit_pending = false; + wlc->beacon_template_virgin = true; /* populate struct brcms_c_info with default values */ brcms_c_info_init(wlc, unit); |