diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/main.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmsmac/main.c | 141 |
1 files changed, 138 insertions, 3 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c index 4ffb0c6d1a0c..60dc2c4bb2f4 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 +449,8 @@ 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); /* free the wlc */ kfree(wlc); @@ -4084,10 +4087,14 @@ 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) @@ -7375,6 +7382,107 @@ int brcms_c_get_header_len(void) return TXOFF; } +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; + + /* Get tx_info */ + tx_info = IEEE80211_SKB_CB(beacon); + + len = min_t(size_t, beacon->len, BCN_TMPL_LEN); + wlc->bcn_rspec = ieee80211_get_tx_rate(ieee_hw, tx_info)->hw_value; + + 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, wlc->bcn_rspec); + + 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); + + /* 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); + + /* write beacon length to SCR */ + brcms_b_write_shm(wlc_hw, M_BCN1_FRM_BYTESZ, (u16) len); + } + + 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); + } +} + +static void brcms_c_update_beacon_hw(struct brcms_c_info *wlc, + struct sk_buff *beacon, u16 tim_offset, + u16 dtim_period) +{ + 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; +} + /* * Update all beacons for the system. */ @@ -7383,9 +7491,31 @@ void brcms_c_update_beacon(struct brcms_c_info *wlc) struct brcms_bss_cfg *bsscfg = wlc->bsscfg; if (wlc->pub->up && (bsscfg->type == BRCMS_TYPE_AP || - bsscfg->type == BRCMS_TYPE_ADHOC)) + 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); } /* Write ssid into shared memory */ @@ -7784,6 +7914,10 @@ 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; @@ -7920,6 +8054,7 @@ 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); |