diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/main.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmsmac/main.c | 8139 |
1 files changed, 0 insertions, 8139 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c deleted file mode 100644 index 218cbc8bf..000000000 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c +++ /dev/null @@ -1,8139 +0,0 @@ -/* - * 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 - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY - * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/pci_ids.h> -#include <linux/if_ether.h> -#include <net/cfg80211.h> -#include <net/mac80211.h> -#include <brcm_hw_ids.h> -#include <aiutils.h> -#include <chipcommon.h> -#include "rate.h" -#include "scb.h" -#include "phy/phy_hal.h" -#include "channel.h" -#include "antsel.h" -#include "stf.h" -#include "ampdu.h" -#include "mac80211_if.h" -#include "ucode_loader.h" -#include "main.h" -#include "soc.h" -#include "dma.h" -#include "debug.h" -#include "brcms_trace_events.h" - -/* watchdog timer, in unit of ms */ -#define TIMER_INTERVAL_WATCHDOG 1000 -/* radio monitor timer, in unit of ms */ -#define TIMER_INTERVAL_RADIOCHK 800 - -/* beacon interval, in unit of 1024TU */ -#define BEACON_INTERVAL_DEFAULT 100 - -/* n-mode support capability */ -/* 2x2 includes both 1x1 & 2x2 devices - * reserved #define 2 for future when we want to separate 1x1 & 2x2 and - * control it independently - */ -#define WL_11N_2x2 1 -#define WL_11N_3x3 3 -#define WL_11N_4x4 4 - -#define EDCF_ACI_MASK 0x60 -#define EDCF_ACI_SHIFT 5 -#define EDCF_ECWMIN_MASK 0x0f -#define EDCF_ECWMAX_SHIFT 4 -#define EDCF_AIFSN_MASK 0x0f -#define EDCF_AIFSN_MAX 15 -#define EDCF_ECWMAX_MASK 0xf0 - -#define EDCF_AC_BE_TXOP_STA 0x0000 -#define EDCF_AC_BK_TXOP_STA 0x0000 -#define EDCF_AC_VO_ACI_STA 0x62 -#define EDCF_AC_VO_ECW_STA 0x32 -#define EDCF_AC_VI_ACI_STA 0x42 -#define EDCF_AC_VI_ECW_STA 0x43 -#define EDCF_AC_BK_ECW_STA 0xA4 -#define EDCF_AC_VI_TXOP_STA 0x005e -#define EDCF_AC_VO_TXOP_STA 0x002f -#define EDCF_AC_BE_ACI_STA 0x03 -#define EDCF_AC_BE_ECW_STA 0xA4 -#define EDCF_AC_BK_ACI_STA 0x27 -#define EDCF_AC_VO_TXOP_AP 0x002f - -#define EDCF_TXOP2USEC(txop) ((txop) << 5) -#define EDCF_ECW2CW(exp) ((1 << (exp)) - 1) - -#define APHY_SYMBOL_TIME 4 -#define APHY_PREAMBLE_TIME 16 -#define APHY_SIGNAL_TIME 4 -#define APHY_SIFS_TIME 16 -#define APHY_SERVICE_NBITS 16 -#define APHY_TAIL_NBITS 6 -#define BPHY_SIFS_TIME 10 -#define BPHY_PLCP_SHORT_TIME 96 - -#define PREN_PREAMBLE 24 -#define PREN_MM_EXT 12 -#define PREN_PREAMBLE_EXT 4 - -#define DOT11_MAC_HDR_LEN 24 -#define DOT11_ACK_LEN 10 -#define DOT11_BA_LEN 4 -#define DOT11_OFDM_SIGNAL_EXTENSION 6 -#define DOT11_MIN_FRAG_LEN 256 -#define DOT11_RTS_LEN 16 -#define DOT11_CTS_LEN 10 -#define DOT11_BA_BITMAP_LEN 128 -#define DOT11_MAXNUMFRAGS 16 -#define DOT11_MAX_FRAG_LEN 2346 - -#define BPHY_PLCP_TIME 192 -#define RIFS_11N_TIME 2 - -/* length of the BCN template area */ -#define BCN_TMPL_LEN 512 - -/* brcms_bss_info flag bit values */ -#define BRCMS_BSS_HT 0x0020 /* BSS is HT (MIMO) capable */ - -/* chip rx buffer offset */ -#define BRCMS_HWRXOFF 38 - -/* rfdisable delay timer 500 ms, runs of ALP clock */ -#define RFDISABLE_DEFAULT 10000000 - -#define BRCMS_TEMPSENSE_PERIOD 10 /* 10 second timeout */ - -/* synthpu_dly times in us */ -#define SYNTHPU_DLY_APHY_US 3700 -#define SYNTHPU_DLY_BPHY_US 1050 -#define SYNTHPU_DLY_NPHY_US 2048 -#define SYNTHPU_DLY_LPPHY_US 300 - -#define ANTCNT 10 /* vanilla M_MAX_ANTCNT val */ - -/* Per-AC retry limit register definitions; uses defs.h bitfield macros */ -#define EDCF_SHORT_S 0 -#define EDCF_SFB_S 4 -#define EDCF_LONG_S 8 -#define EDCF_LFB_S 12 -#define EDCF_SHORT_M BITFIELD_MASK(4) -#define EDCF_SFB_M BITFIELD_MASK(4) -#define EDCF_LONG_M BITFIELD_MASK(4) -#define EDCF_LFB_M BITFIELD_MASK(4) - -#define RETRY_SHORT_DEF 7 /* Default Short retry Limit */ -#define RETRY_SHORT_MAX 255 /* Maximum Short retry Limit */ -#define RETRY_LONG_DEF 4 /* Default Long retry count */ -#define RETRY_SHORT_FB 3 /* Short count for fb rate */ -#define RETRY_LONG_FB 2 /* Long count for fb rate */ - -#define APHY_CWMIN 15 -#define PHY_CWMAX 1023 - -#define EDCF_AIFSN_MIN 1 - -#define FRAGNUM_MASK 0xF - -#define APHY_SLOT_TIME 9 -#define BPHY_SLOT_TIME 20 - -#define WL_SPURAVOID_OFF 0 -#define WL_SPURAVOID_ON1 1 -#define WL_SPURAVOID_ON2 2 - -/* invalid core flags, use the saved coreflags */ -#define BRCMS_USE_COREFLAGS 0xffffffff - -/* values for PLCPHdr_override */ -#define BRCMS_PLCP_AUTO -1 -#define BRCMS_PLCP_SHORT 0 -#define BRCMS_PLCP_LONG 1 - -/* values for g_protection_override and n_protection_override */ -#define BRCMS_PROTECTION_AUTO -1 -#define BRCMS_PROTECTION_OFF 0 -#define BRCMS_PROTECTION_ON 1 -#define BRCMS_PROTECTION_MMHDR_ONLY 2 -#define BRCMS_PROTECTION_CTS_ONLY 3 - -/* values for g_protection_control and n_protection_control */ -#define BRCMS_PROTECTION_CTL_OFF 0 -#define BRCMS_PROTECTION_CTL_LOCAL 1 -#define BRCMS_PROTECTION_CTL_OVERLAP 2 - -/* values for n_protection */ -#define BRCMS_N_PROTECTION_OFF 0 -#define BRCMS_N_PROTECTION_OPTIONAL 1 -#define BRCMS_N_PROTECTION_20IN40 2 -#define BRCMS_N_PROTECTION_MIXEDMODE 3 - -/* values for band specific 40MHz capabilities */ -#define BRCMS_N_BW_20ALL 0 -#define BRCMS_N_BW_40ALL 1 -#define BRCMS_N_BW_20IN2G_40IN5G 2 - -/* bitflags for SGI support (sgi_rx iovar) */ -#define BRCMS_N_SGI_20 0x01 -#define BRCMS_N_SGI_40 0x02 - -/* defines used by the nrate iovar */ -/* MSC in use,indicates b0-6 holds an mcs */ -#define NRATE_MCS_INUSE 0x00000080 -/* rate/mcs value */ -#define NRATE_RATE_MASK 0x0000007f -/* stf mode mask: siso, cdd, stbc, sdm */ -#define NRATE_STF_MASK 0x0000ff00 -/* stf mode shift */ -#define NRATE_STF_SHIFT 8 -/* bit indicate to override mcs only */ -#define NRATE_OVERRIDE_MCS_ONLY 0x40000000 -#define NRATE_SGI_MASK 0x00800000 /* sgi mode */ -#define NRATE_SGI_SHIFT 23 /* sgi mode */ -#define NRATE_LDPC_CODING 0x00400000 /* adv coding in use */ -#define NRATE_LDPC_SHIFT 22 /* ldpc shift */ - -#define NRATE_STF_SISO 0 /* stf mode SISO */ -#define NRATE_STF_CDD 1 /* stf mode CDD */ -#define NRATE_STF_STBC 2 /* stf mode STBC */ -#define NRATE_STF_SDM 3 /* stf mode SDM */ - -#define MAX_DMA_SEGS 4 - -/* # of entries in Tx FIFO */ -#define NTXD 64 -/* Max # of entries in Rx FIFO based on 4kb page size */ -#define NRXD 256 - -/* Amount of headroom to leave in Tx FIFO */ -#define TX_HEADROOM 4 - -/* try to keep this # rbufs posted to the chip */ -#define NRXBUFPOST 32 - -/* max # frames to process in brcms_c_recv() */ -#define RXBND 8 -/* max # tx status to process in wlc_txstatus() */ -#define TXSBND 8 - -/* brcmu_format_flags() bit description structure */ -struct brcms_c_bit_desc { - u32 bit; - const char *name; -}; - -/* - * The following table lists the buffer memory allocated to xmt fifos in HW. - * the size is in units of 256bytes(one block), total size is HW dependent - * ucode has default fifo partition, sw can overwrite if necessary - * - * This is documented in twiki under the topic UcodeTxFifo. Please ensure - * the twiki is updated before making changes. - */ - -/* Starting corerev for the fifo size table */ -#define XMTFIFOTBL_STARTREV 17 - -struct d11init { - __le16 addr; - __le16 size; - __le32 value; -}; - -struct edcf_acparam { - u8 ACI; - u8 ECW; - u16 TXOP; -} __packed; - -/* debug/trace */ -uint brcm_msg_level; - -/* TX FIFO number to WME/802.1E Access Category */ -static const u8 wme_fifo2ac[] = { - IEEE80211_AC_BK, - IEEE80211_AC_BE, - IEEE80211_AC_VI, - IEEE80211_AC_VO, - IEEE80211_AC_BE, - IEEE80211_AC_BE -}; - -/* ieee80211 Access Category to TX FIFO number */ -static const u8 wme_ac2fifo[] = { - TX_AC_VO_FIFO, - TX_AC_VI_FIFO, - TX_AC_BE_FIFO, - TX_AC_BK_FIFO -}; - -static const u16 xmtfifo_sz[][NFIFO] = { - /* corerev 17: 5120, 49152, 49152, 5376, 4352, 1280 */ - {20, 192, 192, 21, 17, 5}, - /* corerev 18: */ - {0, 0, 0, 0, 0, 0}, - /* corerev 19: */ - {0, 0, 0, 0, 0, 0}, - /* corerev 20: 5120, 49152, 49152, 5376, 4352, 1280 */ - {20, 192, 192, 21, 17, 5}, - /* corerev 21: 2304, 14848, 5632, 3584, 3584, 1280 */ - {9, 58, 22, 14, 14, 5}, - /* corerev 22: 5120, 49152, 49152, 5376, 4352, 1280 */ - {20, 192, 192, 21, 17, 5}, - /* corerev 23: 5120, 49152, 49152, 5376, 4352, 1280 */ - {20, 192, 192, 21, 17, 5}, - /* corerev 24: 2304, 14848, 5632, 3584, 3584, 1280 */ - {9, 58, 22, 14, 14, 5}, - /* corerev 25: */ - {0, 0, 0, 0, 0, 0}, - /* corerev 26: */ - {0, 0, 0, 0, 0, 0}, - /* corerev 27: */ - {0, 0, 0, 0, 0, 0}, - /* corerev 28: 2304, 14848, 5632, 3584, 3584, 1280 */ - {9, 58, 22, 14, 14, 5}, -}; - -#ifdef DEBUG -static const char * const fifo_names[] = { - "AC_BK", "AC_BE", "AC_VI", "AC_VO", "BCMC", "ATIM" }; -#else -static const char fifo_names[6][1]; -#endif - -#ifdef DEBUG -/* pointer to most recently allocated wl/wlc */ -static struct brcms_c_info *wlc_info_dbg = (struct brcms_c_info *) (NULL); -#endif - -/* Mapping of ieee80211 AC numbers to tx fifos */ -static const u8 ac_to_fifo_mapping[IEEE80211_NUM_ACS] = { - [IEEE80211_AC_VO] = TX_AC_VO_FIFO, - [IEEE80211_AC_VI] = TX_AC_VI_FIFO, - [IEEE80211_AC_BE] = TX_AC_BE_FIFO, - [IEEE80211_AC_BK] = TX_AC_BK_FIFO, -}; - -/* Mapping of tx fifos to ieee80211 AC numbers */ -static const u8 fifo_to_ac_mapping[IEEE80211_NUM_ACS] = { - [TX_AC_BK_FIFO] = IEEE80211_AC_BK, - [TX_AC_BE_FIFO] = IEEE80211_AC_BE, - [TX_AC_VI_FIFO] = IEEE80211_AC_VI, - [TX_AC_VO_FIFO] = IEEE80211_AC_VO, -}; - -static u8 brcms_ac_to_fifo(u8 ac) -{ - if (ac >= ARRAY_SIZE(ac_to_fifo_mapping)) - return TX_AC_BE_FIFO; - return ac_to_fifo_mapping[ac]; -} - -static u8 brcms_fifo_to_ac(u8 fifo) -{ - if (fifo >= ARRAY_SIZE(fifo_to_ac_mapping)) - return IEEE80211_AC_BE; - return fifo_to_ac_mapping[fifo]; -} - -/* Find basic rate for a given rate */ -static u8 brcms_basic_rate(struct brcms_c_info *wlc, u32 rspec) -{ - if (is_mcs_rate(rspec)) - return wlc->band->basic_rate[mcs_table[rspec & RSPEC_RATE_MASK] - .leg_ofdm]; - return wlc->band->basic_rate[rspec & RSPEC_RATE_MASK]; -} - -static u16 frametype(u32 rspec, u8 mimoframe) -{ - if (is_mcs_rate(rspec)) - return mimoframe; - return is_cck_rate(rspec) ? FT_CCK : FT_OFDM; -} - -/* currently the best mechanism for determining SIFS is the band in use */ -static u16 get_sifs(struct brcms_band *band) -{ - return band->bandtype == BRCM_BAND_5G ? APHY_SIFS_TIME : - BPHY_SIFS_TIME; -} - -/* - * Detect Card removed. - * Even checking an sbconfig register read will not false trigger when the core - * is in reset it breaks CF address mechanism. Accessing gphy phyversion will - * cause SB error if aphy is in reset on 4306B0-DB. Need a simple accessible - * reg with fixed 0/1 pattern (some platforms return all 0). - * If clocks are present, call the sb routine which will figure out if the - * device is removed. - */ -static bool brcms_deviceremoved(struct brcms_c_info *wlc) -{ - u32 macctrl; - - if (!wlc->hw->clk) - return ai_deviceremoved(wlc->hw->sih); - macctrl = bcma_read32(wlc->hw->d11core, - D11REGOFFS(maccontrol)); - return (macctrl & (MCTL_PSM_JMP_0 | MCTL_IHR_EN)) != MCTL_IHR_EN; -} - -/* sum the individual fifo tx pending packet counts */ -static int brcms_txpktpendtot(struct brcms_c_info *wlc) -{ - int i; - int pending = 0; - - for (i = 0; i < ARRAY_SIZE(wlc->hw->di); i++) - if (wlc->hw->di[i]) - pending += dma_txpending(wlc->hw->di[i]); - return pending; -} - -static bool brcms_is_mband_unlocked(struct brcms_c_info *wlc) -{ - return wlc->pub->_nbands > 1 && !wlc->bandlocked; -} - -static int brcms_chspec_bw(u16 chanspec) -{ - if (CHSPEC_IS40(chanspec)) - return BRCMS_40_MHZ; - if (CHSPEC_IS20(chanspec)) - return BRCMS_20_MHZ; - - return BRCMS_10_MHZ; -} - -static void brcms_c_bsscfg_mfree(struct brcms_bss_cfg *cfg) -{ - if (cfg == NULL) - return; - - kfree(cfg->current_bss); - kfree(cfg); -} - -static void brcms_c_detach_mfree(struct brcms_c_info *wlc) -{ - if (wlc == NULL) - return; - - brcms_c_bsscfg_mfree(wlc->bsscfg); - kfree(wlc->pub); - kfree(wlc->modulecb); - kfree(wlc->default_bss); - kfree(wlc->protection); - kfree(wlc->stf); - kfree(wlc->bandstate[0]); - if (wlc->corestate) - kfree(wlc->corestate->macstat_snapshot); - kfree(wlc->corestate); - if (wlc->hw) - 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); - - kfree(wlc); -} - -static struct brcms_bss_cfg *brcms_c_bsscfg_malloc(uint unit) -{ - struct brcms_bss_cfg *cfg; - - cfg = kzalloc(sizeof(struct brcms_bss_cfg), GFP_ATOMIC); - if (cfg == NULL) - goto fail; - - cfg->current_bss = kzalloc(sizeof(struct brcms_bss_info), GFP_ATOMIC); - if (cfg->current_bss == NULL) - goto fail; - - return cfg; - - fail: - brcms_c_bsscfg_mfree(cfg); - return NULL; -} - -static struct brcms_c_info * -brcms_c_attach_malloc(uint unit, uint *err, uint devid) -{ - struct brcms_c_info *wlc; - - wlc = kzalloc(sizeof(struct brcms_c_info), GFP_ATOMIC); - if (wlc == NULL) { - *err = 1002; - goto fail; - } - - /* allocate struct brcms_c_pub state structure */ - wlc->pub = kzalloc(sizeof(struct brcms_pub), GFP_ATOMIC); - if (wlc->pub == NULL) { - *err = 1003; - goto fail; - } - wlc->pub->wlc = wlc; - - /* allocate struct brcms_hardware state structure */ - - wlc->hw = kzalloc(sizeof(struct brcms_hardware), GFP_ATOMIC); - if (wlc->hw == NULL) { - *err = 1005; - goto fail; - } - wlc->hw->wlc = wlc; - - wlc->hw->bandstate[0] = - kzalloc(sizeof(struct brcms_hw_band) * MAXBANDS, GFP_ATOMIC); - if (wlc->hw->bandstate[0] == NULL) { - *err = 1006; - goto fail; - } else { - int i; - - for (i = 1; i < MAXBANDS; i++) - wlc->hw->bandstate[i] = (struct brcms_hw_band *) - ((unsigned long)wlc->hw->bandstate[0] + - (sizeof(struct brcms_hw_band) * i)); - } - - wlc->modulecb = - kzalloc(sizeof(struct modulecb) * BRCMS_MAXMODULES, GFP_ATOMIC); - if (wlc->modulecb == NULL) { - *err = 1009; - goto fail; - } - - wlc->default_bss = kzalloc(sizeof(struct brcms_bss_info), GFP_ATOMIC); - if (wlc->default_bss == NULL) { - *err = 1010; - goto fail; - } - - wlc->bsscfg = brcms_c_bsscfg_malloc(unit); - if (wlc->bsscfg == NULL) { - *err = 1011; - goto fail; - } - - wlc->protection = kzalloc(sizeof(struct brcms_protection), - GFP_ATOMIC); - if (wlc->protection == NULL) { - *err = 1016; - goto fail; - } - - wlc->stf = kzalloc(sizeof(struct brcms_stf), GFP_ATOMIC); - if (wlc->stf == NULL) { - *err = 1017; - goto fail; - } - - wlc->bandstate[0] = - kzalloc(sizeof(struct brcms_band)*MAXBANDS, GFP_ATOMIC); - if (wlc->bandstate[0] == NULL) { - *err = 1025; - goto fail; - } else { - int i; - - for (i = 1; i < MAXBANDS; i++) - wlc->bandstate[i] = (struct brcms_band *) - ((unsigned long)wlc->bandstate[0] - + (sizeof(struct brcms_band)*i)); - } - - wlc->corestate = kzalloc(sizeof(struct brcms_core), GFP_ATOMIC); - if (wlc->corestate == NULL) { - *err = 1026; - goto fail; - } - - wlc->corestate->macstat_snapshot = - kzalloc(sizeof(struct macstat), GFP_ATOMIC); - if (wlc->corestate->macstat_snapshot == NULL) { - *err = 1027; - goto fail; - } - - return wlc; - - fail: - brcms_c_detach_mfree(wlc); - return NULL; -} - -/* - * Update the slot timing for standard 11b/g (20us slots) - * or shortslot 11g (9us slots) - * The PSM needs to be suspended for this call. - */ -static void brcms_b_update_slot_timing(struct brcms_hardware *wlc_hw, - bool shortslot) -{ - struct bcma_device *core = wlc_hw->d11core; - - if (shortslot) { - /* 11g short slot: 11a timing */ - bcma_write16(core, D11REGOFFS(ifs_slot), 0x0207); - brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, APHY_SLOT_TIME); - } else { - /* 11g long slot: 11b timing */ - bcma_write16(core, D11REGOFFS(ifs_slot), 0x0212); - brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, BPHY_SLOT_TIME); - } -} - -/* - * calculate frame duration of a given rate and length, return - * time in usec unit - */ -static uint brcms_c_calc_frame_time(struct brcms_c_info *wlc, u32 ratespec, - u8 preamble_type, uint mac_len) -{ - uint nsyms, dur = 0, Ndps, kNdps; - uint rate = rspec2rate(ratespec); - - if (rate == 0) { - brcms_err(wlc->hw->d11core, "wl%d: WAR: using rate of 1 mbps\n", - wlc->pub->unit); - rate = BRCM_RATE_1M; - } - - if (is_mcs_rate(ratespec)) { - uint mcs = ratespec & RSPEC_RATE_MASK; - int tot_streams = mcs_2_txstreams(mcs) + rspec_stc(ratespec); - - dur = PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT); - if (preamble_type == BRCMS_MM_PREAMBLE) - dur += PREN_MM_EXT; - /* 1000Ndbps = kbps * 4 */ - kNdps = mcs_2_rate(mcs, rspec_is40mhz(ratespec), - rspec_issgi(ratespec)) * 4; - - if (rspec_stc(ratespec) == 0) - nsyms = - CEIL((APHY_SERVICE_NBITS + 8 * mac_len + - APHY_TAIL_NBITS) * 1000, kNdps); - else - /* STBC needs to have even number of symbols */ - nsyms = - 2 * - CEIL((APHY_SERVICE_NBITS + 8 * mac_len + - APHY_TAIL_NBITS) * 1000, 2 * kNdps); - - dur += APHY_SYMBOL_TIME * nsyms; - if (wlc->band->bandtype == BRCM_BAND_2G) - dur += DOT11_OFDM_SIGNAL_EXTENSION; - } else if (is_ofdm_rate(rate)) { - dur = APHY_PREAMBLE_TIME; - dur += APHY_SIGNAL_TIME; - /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */ - Ndps = rate * 2; - /* NSyms = CEILING((SERVICE + 8*NBytes + TAIL) / Ndbps) */ - nsyms = - CEIL((APHY_SERVICE_NBITS + 8 * mac_len + APHY_TAIL_NBITS), - Ndps); - dur += APHY_SYMBOL_TIME * nsyms; - if (wlc->band->bandtype == BRCM_BAND_2G) - dur += DOT11_OFDM_SIGNAL_EXTENSION; - } else { - /* - * calc # bits * 2 so factor of 2 in rate (1/2 mbps) - * will divide out - */ - mac_len = mac_len * 8 * 2; - /* calc ceiling of bits/rate = microseconds of air time */ - dur = (mac_len + rate - 1) / rate; - if (preamble_type & BRCMS_SHORT_PREAMBLE) - dur += BPHY_PLCP_SHORT_TIME; - else - dur += BPHY_PLCP_TIME; - } - return dur; -} - -static void brcms_c_write_inits(struct brcms_hardware *wlc_hw, - const struct d11init *inits) -{ - struct bcma_device *core = wlc_hw->d11core; - int i; - uint offset; - u16 size; - u32 value; - - brcms_dbg_info(wlc_hw->d11core, "wl%d\n", wlc_hw->unit); - - for (i = 0; inits[i].addr != cpu_to_le16(0xffff); i++) { - size = le16_to_cpu(inits[i].size); - offset = le16_to_cpu(inits[i].addr); - value = le32_to_cpu(inits[i].value); - if (size == 2) - bcma_write16(core, offset, value); - else if (size == 4) - bcma_write32(core, offset, value); - else - break; - } -} - -static void brcms_c_write_mhf(struct brcms_hardware *wlc_hw, u16 *mhfs) -{ - u8 idx; - u16 addr[] = { - M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4, - M_HOST_FLAGS5 - }; - - for (idx = 0; idx < MHFMAX; idx++) - brcms_b_write_shm(wlc_hw, addr[idx], mhfs[idx]); -} - -static void brcms_c_ucode_bsinit(struct brcms_hardware *wlc_hw) -{ - struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode; - - /* init microcode host flags */ - brcms_c_write_mhf(wlc_hw, wlc_hw->band->mhfs); - - /* do band-specific ucode IHR, SHM, and SCR inits */ - if (D11REV_IS(wlc_hw->corerev, 17) || D11REV_IS(wlc_hw->corerev, 23)) { - if (BRCMS_ISNPHY(wlc_hw->band)) - brcms_c_write_inits(wlc_hw, ucode->d11n0bsinitvals16); - else - brcms_err(wlc_hw->d11core, - "%s: wl%d: unsupported phy in corerev %d\n", - __func__, wlc_hw->unit, - wlc_hw->corerev); - } else { - if (D11REV_IS(wlc_hw->corerev, 24)) { - if (BRCMS_ISLCNPHY(wlc_hw->band)) - brcms_c_write_inits(wlc_hw, - ucode->d11lcn0bsinitvals24); - else - brcms_err(wlc_hw->d11core, - "%s: wl%d: unsupported phy in core rev %d\n", - __func__, wlc_hw->unit, - wlc_hw->corerev); - } else { - brcms_err(wlc_hw->d11core, - "%s: wl%d: unsupported corerev %d\n", - __func__, wlc_hw->unit, wlc_hw->corerev); - } - } -} - -static void brcms_b_core_ioctl(struct brcms_hardware *wlc_hw, u32 m, u32 v) -{ - struct bcma_device *core = wlc_hw->d11core; - u32 ioctl = bcma_aread32(core, BCMA_IOCTL) & ~m; - - bcma_awrite32(core, BCMA_IOCTL, ioctl | v); -} - -static void brcms_b_core_phy_clk(struct brcms_hardware *wlc_hw, bool clk) -{ - brcms_dbg_info(wlc_hw->d11core, "wl%d: clk %d\n", wlc_hw->unit, clk); - - wlc_hw->phyclk = clk; - - if (OFF == clk) { /* clear gmode bit, put phy into reset */ - - brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_FGC | SICF_GMODE), - (SICF_PRST | SICF_FGC)); - udelay(1); - brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_FGC), SICF_PRST); - udelay(1); - - } else { /* take phy out of reset */ - - brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_FGC), SICF_FGC); - udelay(1); - brcms_b_core_ioctl(wlc_hw, SICF_FGC, 0); - udelay(1); - - } -} - -/* low-level band switch utility routine */ -static void brcms_c_setxband(struct brcms_hardware *wlc_hw, uint bandunit) -{ - brcms_dbg_mac80211(wlc_hw->d11core, "wl%d: bandunit %d\n", wlc_hw->unit, - bandunit); - - wlc_hw->band = wlc_hw->bandstate[bandunit]; - - /* - * BMAC_NOTE: - * until we eliminate need for wlc->band refs in low level code - */ - wlc_hw->wlc->band = wlc_hw->wlc->bandstate[bandunit]; - - /* set gmode core flag */ - if (wlc_hw->sbclk && !wlc_hw->noreset) { - u32 gmode = 0; - - if (bandunit == 0) - gmode = SICF_GMODE; - - brcms_b_core_ioctl(wlc_hw, SICF_GMODE, gmode); - } -} - -/* switch to new band but leave it inactive */ -static u32 brcms_c_setband_inact(struct brcms_c_info *wlc, uint bandunit) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - u32 macintmask; - u32 macctrl; - - brcms_dbg_mac80211(wlc_hw->d11core, "wl%d\n", wlc_hw->unit); - macctrl = bcma_read32(wlc_hw->d11core, - D11REGOFFS(maccontrol)); - WARN_ON((macctrl & MCTL_EN_MAC) != 0); - - /* disable interrupts */ - macintmask = brcms_intrsoff(wlc->wl); - - /* radio off */ - wlc_phy_switch_radio(wlc_hw->band->pi, OFF); - - brcms_b_core_phy_clk(wlc_hw, OFF); - - brcms_c_setxband(wlc_hw, bandunit); - - return macintmask; -} - -/* process an individual struct tx_status */ -static bool -brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs) -{ - struct sk_buff *p = NULL; - uint queue = NFIFO; - struct dma_pub *dma = NULL; - struct d11txh *txh = NULL; - struct scb *scb = NULL; - bool free_pdu; - int tx_rts, tx_frame_count, tx_rts_count; - uint totlen, supr_status; - bool lastframe; - struct ieee80211_hdr *h; - u16 mcl; - struct ieee80211_tx_info *tx_info; - struct ieee80211_tx_rate *txrate; - int i; - bool fatal = true; - - trace_brcms_txstatus(&wlc->hw->d11core->dev, txs->framelen, - txs->frameid, txs->status, txs->lasttxtime, - txs->sequence, txs->phyerr, txs->ackphyrxsh); - - /* discard intermediate indications for ucode with one legitimate case: - * e.g. if "useRTS" is set. ucode did a successful rts/cts exchange, - * but the subsequent tx of DATA failed. so it will start rts/cts - * from the beginning (resetting the rts transmission count) - */ - if (!(txs->status & TX_STATUS_AMPDU) - && (txs->status & TX_STATUS_INTERMEDIATE)) { - brcms_dbg_tx(wlc->hw->d11core, "INTERMEDIATE but not AMPDU\n"); - fatal = false; - goto out; - } - - queue = txs->frameid & TXFID_QUEUE_MASK; - if (queue >= NFIFO) { - brcms_err(wlc->hw->d11core, "queue %u >= NFIFO\n", queue); - goto out; - } - - dma = wlc->hw->di[queue]; - - p = dma_getnexttxp(wlc->hw->di[queue], DMA_RANGE_TRANSMITTED); - if (p == NULL) { - brcms_err(wlc->hw->d11core, "dma_getnexttxp returned null!\n"); - goto out; - } - - txh = (struct d11txh *) (p->data); - mcl = le16_to_cpu(txh->MacTxControlLow); - - if (txs->phyerr) - brcms_dbg_tx(wlc->hw->d11core, "phyerr 0x%x, rate 0x%x\n", - txs->phyerr, txh->MainRates); - - if (txs->frameid != le16_to_cpu(txh->TxFrameID)) { - brcms_err(wlc->hw->d11core, "frameid != txh->TxFrameID\n"); - goto out; - } - tx_info = IEEE80211_SKB_CB(p); - h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN); - - if (tx_info->rate_driver_data[0]) - scb = &wlc->pri_scb; - - if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) { - brcms_c_ampdu_dotxstatus(wlc->ampdu, scb, p, txs); - fatal = false; - goto out; - } - - /* - * brcms_c_ampdu_dotxstatus() will trace tx descriptors for AMPDU - * frames; this traces them for the rest. - */ - trace_brcms_txdesc(&wlc->hw->d11core->dev, txh, sizeof(*txh)); - - supr_status = txs->status & TX_STATUS_SUPR_MASK; - if (supr_status == TX_STATUS_SUPR_BADCH) { - unsigned xfts = le16_to_cpu(txh->XtraFrameTypes); - brcms_dbg_tx(wlc->hw->d11core, - "Pkt tx suppressed, dest chan %u, current %d\n", - (xfts >> XFTS_CHANNEL_SHIFT) & 0xff, - CHSPEC_CHANNEL(wlc->default_bss->chanspec)); - } - - tx_rts = le16_to_cpu(txh->MacTxControlLow) & TXC_SENDRTS; - tx_frame_count = - (txs->status & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT; - tx_rts_count = - (txs->status & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT; - - lastframe = !ieee80211_has_morefrags(h->frame_control); - - if (!lastframe) { - brcms_err(wlc->hw->d11core, "Not last frame!\n"); - } else { - /* - * Set information to be consumed by Minstrel ht. - * - * The "fallback limit" is the number of tx attempts a given - * MPDU is sent at the "primary" rate. Tx attempts beyond that - * limit are sent at the "secondary" rate. - * A 'short frame' does not exceed RTS treshold. - */ - u16 sfbl, /* Short Frame Rate Fallback Limit */ - lfbl, /* Long Frame Rate Fallback Limit */ - fbl; - - if (queue < IEEE80211_NUM_ACS) { - sfbl = GFIELD(wlc->wme_retries[wme_fifo2ac[queue]], - EDCF_SFB); - lfbl = GFIELD(wlc->wme_retries[wme_fifo2ac[queue]], - EDCF_LFB); - } else { - sfbl = wlc->SFBL; - lfbl = wlc->LFBL; - } - - txrate = tx_info->status.rates; - if (txrate[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) - fbl = lfbl; - else - fbl = sfbl; - - ieee80211_tx_info_clear_status(tx_info); - - if ((tx_frame_count > fbl) && (txrate[1].idx >= 0)) { - /* - * rate selection requested a fallback rate - * and we used it - */ - txrate[0].count = fbl; - txrate[1].count = tx_frame_count - fbl; - } else { - /* - * rate selection did not request fallback rate, or - * we didn't need it - */ - txrate[0].count = tx_frame_count; - /* - * rc80211_minstrel.c:minstrel_tx_status() expects - * unused rates to be marked with idx = -1 - */ - txrate[1].idx = -1; - txrate[1].count = 0; - } - - /* clear the rest of the rates */ - for (i = 2; i < IEEE80211_TX_MAX_RATES; i++) { - txrate[i].idx = -1; - txrate[i].count = 0; - } - - if (txs->status & TX_STATUS_ACK_RCV) - tx_info->flags |= IEEE80211_TX_STAT_ACK; - } - - totlen = p->len; - free_pdu = true; - - if (lastframe) { - /* remove PLCP & Broadcom tx descriptor header */ - skb_pull(p, D11_PHY_HDR_LEN); - skb_pull(p, D11_TXH_LEN); - ieee80211_tx_status_irqsafe(wlc->pub->ieee_hw, p); - } else { - brcms_err(wlc->hw->d11core, - "%s: Not last frame => not calling tx_status\n", - __func__); - } - - fatal = false; - - out: - if (fatal) { - if (txh) - trace_brcms_txdesc(&wlc->hw->d11core->dev, txh, - sizeof(*txh)); - brcmu_pkt_buf_free_skb(p); - } - - if (dma && queue < NFIFO) { - u16 ac_queue = brcms_fifo_to_ac(queue); - if (dma->txavail > TX_HEADROOM && queue < TX_BCMC_FIFO && - ieee80211_queue_stopped(wlc->pub->ieee_hw, ac_queue)) - ieee80211_wake_queue(wlc->pub->ieee_hw, ac_queue); - dma_kick_tx(dma); - } - - return fatal; -} - -/* process tx completion events in BMAC - * Return true if more tx status need to be processed. false otherwise. - */ -static bool -brcms_b_txstatus(struct brcms_hardware *wlc_hw, bool bound, bool *fatal) -{ - struct bcma_device *core; - struct tx_status txstatus, *txs; - u32 s1, s2; - uint n = 0; - /* - * Param 'max_tx_num' indicates max. # tx status to process before - * break out. - */ - uint max_tx_num = bound ? TXSBND : -1; - - txs = &txstatus; - core = wlc_hw->d11core; - *fatal = false; - - while (n < max_tx_num) { - s1 = bcma_read32(core, D11REGOFFS(frmtxstatus)); - if (s1 == 0xffffffff) { - brcms_err(core, "wl%d: %s: dead chip\n", wlc_hw->unit, - __func__); - *fatal = true; - return false; - } - /* only process when valid */ - if (!(s1 & TXS_V)) - break; - - s2 = bcma_read32(core, D11REGOFFS(frmtxstatus2)); - txs->status = s1 & TXS_STATUS_MASK; - txs->frameid = (s1 & TXS_FID_MASK) >> TXS_FID_SHIFT; - txs->sequence = s2 & TXS_SEQ_MASK; - txs->phyerr = (s2 & TXS_PTX_MASK) >> TXS_PTX_SHIFT; - txs->lasttxtime = 0; - - *fatal = brcms_c_dotxstatus(wlc_hw->wlc, txs); - if (*fatal == true) - return false; - n++; - } - - return n >= max_tx_num; -} - -static void brcms_c_tbtt(struct brcms_c_info *wlc) -{ - if (wlc->bsscfg->type == BRCMS_TYPE_ADHOC) - /* - * DirFrmQ is now valid...defer setting until end - * of ATIM window - */ - wlc->qvalid |= MCMD_DIRFRMQVAL; -} - -/* set initial host flags value */ -static void -brcms_c_mhfdef(struct brcms_c_info *wlc, u16 *mhfs, u16 mhf2_init) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - - memset(mhfs, 0, MHFMAX * sizeof(u16)); - - mhfs[MHF2] |= mhf2_init; - - /* prohibit use of slowclock on multifunction boards */ - if (wlc_hw->boardflags & BFL_NOPLLDOWN) - mhfs[MHF1] |= MHF1_FORCEFASTCLK; - - if (BRCMS_ISNPHY(wlc_hw->band) && NREV_LT(wlc_hw->band->phyrev, 2)) { - mhfs[MHF2] |= MHF2_NPHY40MHZ_WAR; - mhfs[MHF1] |= MHF1_IQSWAP_WAR; - } -} - -static uint -dmareg(uint direction, uint fifonum) -{ - if (direction == DMA_TX) - return offsetof(struct d11regs, fifo64regs[fifonum].dmaxmt); - return offsetof(struct d11regs, fifo64regs[fifonum].dmarcv); -} - -static bool brcms_b_attach_dmapio(struct brcms_c_info *wlc, uint j, bool wme) -{ - uint i; - char name[8]; - /* - * ucode host flag 2 needed for pio mode, independent of band and fifo - */ - u16 pio_mhf2 = 0; - struct brcms_hardware *wlc_hw = wlc->hw; - uint unit = wlc_hw->unit; - - /* name and offsets for dma_attach */ - snprintf(name, sizeof(name), "wl%d", unit); - - if (wlc_hw->di[0] == NULL) { /* Init FIFOs */ - int dma_attach_err = 0; - - /* - * FIFO 0 - * TX: TX_AC_BK_FIFO (TX AC Background data packets) - * RX: RX_FIFO (RX data packets) - */ - wlc_hw->di[0] = dma_attach(name, wlc, - (wme ? dmareg(DMA_TX, 0) : 0), - dmareg(DMA_RX, 0), - (wme ? NTXD : 0), NRXD, - RXBUFSZ, -1, NRXBUFPOST, - BRCMS_HWRXOFF); - dma_attach_err |= (NULL == wlc_hw->di[0]); - - /* - * FIFO 1 - * TX: TX_AC_BE_FIFO (TX AC Best-Effort data packets) - * (legacy) TX_DATA_FIFO (TX data packets) - * RX: UNUSED - */ - wlc_hw->di[1] = dma_attach(name, wlc, - dmareg(DMA_TX, 1), 0, - NTXD, 0, 0, -1, 0, 0); - dma_attach_err |= (NULL == wlc_hw->di[1]); - - /* - * FIFO 2 - * TX: TX_AC_VI_FIFO (TX AC Video data packets) - * RX: UNUSED - */ - wlc_hw->di[2] = dma_attach(name, wlc, - dmareg(DMA_TX, 2), 0, - NTXD, 0, 0, -1, 0, 0); - dma_attach_err |= (NULL == wlc_hw->di[2]); - /* - * FIFO 3 - * TX: TX_AC_VO_FIFO (TX AC Voice data packets) - * (legacy) TX_CTL_FIFO (TX control & mgmt packets) - */ - wlc_hw->di[3] = dma_attach(name, wlc, - dmareg(DMA_TX, 3), - 0, NTXD, 0, 0, -1, - 0, 0); - dma_attach_err |= (NULL == wlc_hw->di[3]); -/* Cleaner to leave this as if with AP defined */ - - if (dma_attach_err) { - brcms_err(wlc_hw->d11core, - "wl%d: wlc_attach: dma_attach failed\n", - unit); - return false; - } - - /* get pointer to dma engine tx flow control variable */ - for (i = 0; i < NFIFO; i++) - if (wlc_hw->di[i]) - wlc_hw->txavail[i] = - (uint *) dma_getvar(wlc_hw->di[i], - "&txavail"); - } - - /* initial ucode host flags */ - brcms_c_mhfdef(wlc, wlc_hw->band->mhfs, pio_mhf2); - - return true; -} - -static void brcms_b_detach_dmapio(struct brcms_hardware *wlc_hw) -{ - uint j; - - for (j = 0; j < NFIFO; j++) { - if (wlc_hw->di[j]) { - dma_detach(wlc_hw->di[j]); - wlc_hw->di[j] = NULL; - } - } -} - -/* - * Initialize brcms_c_info default values ... - * may get overrides later in this function - * BMAC_NOTES, move low out and resolve the dangling ones - */ -static void brcms_b_info_init(struct brcms_hardware *wlc_hw) -{ - struct brcms_c_info *wlc = wlc_hw->wlc; - - /* set default sw macintmask value */ - wlc->defmacintmask = DEF_MACINTMASK; - - /* various 802.11g modes */ - wlc_hw->shortslot = false; - - wlc_hw->SFBL = RETRY_SHORT_FB; - wlc_hw->LFBL = RETRY_LONG_FB; - - /* default mac retry limits */ - wlc_hw->SRL = RETRY_SHORT_DEF; - wlc_hw->LRL = RETRY_LONG_DEF; - wlc_hw->chanspec = ch20mhz_chspec(1); -} - -static void brcms_b_wait_for_wake(struct brcms_hardware *wlc_hw) -{ - /* delay before first read of ucode state */ - udelay(40); - - /* wait until ucode is no longer asleep */ - SPINWAIT((brcms_b_read_shm(wlc_hw, M_UCODE_DBGST) == - DBGST_ASLEEP), wlc_hw->wlc->fastpwrup_dly); -} - -/* control chip clock to save power, enable dynamic clock or force fast clock */ -static void brcms_b_clkctl_clk(struct brcms_hardware *wlc_hw, enum bcma_clkmode mode) -{ - if (ai_get_cccaps(wlc_hw->sih) & CC_CAP_PMU) { - /* new chips with PMU, CCS_FORCEHT will distribute the HT clock - * on backplane, but mac core will still run on ALP(not HT) when - * it enters powersave mode, which means the FCA bit may not be - * set. Should wakeup mac if driver wants it to run on HT. - */ - - if (wlc_hw->clk) { - if (mode == BCMA_CLKMODE_FAST) { - bcma_set32(wlc_hw->d11core, - D11REGOFFS(clk_ctl_st), - CCS_FORCEHT); - - udelay(64); - - SPINWAIT( - ((bcma_read32(wlc_hw->d11core, - D11REGOFFS(clk_ctl_st)) & - CCS_HTAVAIL) == 0), - PMU_MAX_TRANSITION_DLY); - WARN_ON(!(bcma_read32(wlc_hw->d11core, - D11REGOFFS(clk_ctl_st)) & - CCS_HTAVAIL)); - } else { - if ((ai_get_pmurev(wlc_hw->sih) == 0) && - (bcma_read32(wlc_hw->d11core, - D11REGOFFS(clk_ctl_st)) & - (CCS_FORCEHT | CCS_HTAREQ))) - SPINWAIT( - ((bcma_read32(wlc_hw->d11core, - offsetof(struct d11regs, - clk_ctl_st)) & - CCS_HTAVAIL) == 0), - PMU_MAX_TRANSITION_DLY); - bcma_mask32(wlc_hw->d11core, - D11REGOFFS(clk_ctl_st), - ~CCS_FORCEHT); - } - } - wlc_hw->forcefastclk = (mode == BCMA_CLKMODE_FAST); - } else { - - /* old chips w/o PMU, force HT through cc, - * then use FCA to verify mac is running fast clock - */ - - wlc_hw->forcefastclk = ai_clkctl_cc(wlc_hw->sih, mode); - - /* check fast clock is available (if core is not in reset) */ - if (wlc_hw->forcefastclk && wlc_hw->clk) - WARN_ON(!(bcma_aread32(wlc_hw->d11core, BCMA_IOST) & - SISF_FCLKA)); - - /* - * keep the ucode wake bit on if forcefastclk is on since we - * do not want ucode to put us back to slow clock when it dozes - * for PM mode. Code below matches the wake override bit with - * current forcefastclk state. Only setting bit in wake_override - * instead of waking ucode immediately since old code had this - * behavior. Older code set wlc->forcefastclk but only had the - * wake happen if the wakup_ucode work (protected by an up - * check) was executed just below. - */ - if (wlc_hw->forcefastclk) - mboolset(wlc_hw->wake_override, - BRCMS_WAKE_OVERRIDE_FORCEFAST); - else - mboolclr(wlc_hw->wake_override, - BRCMS_WAKE_OVERRIDE_FORCEFAST); - } -} - -/* set or clear ucode host flag bits - * it has an optimization for no-change write - * it only writes through shared memory when the core has clock; - * pre-CLK changes should use wlc_write_mhf to get around the optimization - * - * - * bands values are: BRCM_BAND_AUTO <--- Current band only - * BRCM_BAND_5G <--- 5G band only - * BRCM_BAND_2G <--- 2G band only - * BRCM_BAND_ALL <--- All bands - */ -void -brcms_b_mhf(struct brcms_hardware *wlc_hw, u8 idx, u16 mask, u16 val, - int bands) -{ - u16 save; - u16 addr[MHFMAX] = { - M_HOST_FLAGS1, M_HOST_FLAGS2, M_HOST_FLAGS3, M_HOST_FLAGS4, - M_HOST_FLAGS5 - }; - struct brcms_hw_band *band; - - if ((val & ~mask) || idx >= MHFMAX) - return; /* error condition */ - - switch (bands) { - /* Current band only or all bands, - * then set the band to current band - */ - case BRCM_BAND_AUTO: - case BRCM_BAND_ALL: - band = wlc_hw->band; - break; - case BRCM_BAND_5G: - band = wlc_hw->bandstate[BAND_5G_INDEX]; - break; - case BRCM_BAND_2G: - band = wlc_hw->bandstate[BAND_2G_INDEX]; - break; - default: - band = NULL; /* error condition */ - } - - if (band) { - save = band->mhfs[idx]; - band->mhfs[idx] = (band->mhfs[idx] & ~mask) | val; - - /* optimization: only write through if changed, and - * changed band is the current band - */ - if (wlc_hw->clk && (band->mhfs[idx] != save) - && (band == wlc_hw->band)) - brcms_b_write_shm(wlc_hw, addr[idx], - (u16) band->mhfs[idx]); - } - - if (bands == BRCM_BAND_ALL) { - wlc_hw->bandstate[0]->mhfs[idx] = - (wlc_hw->bandstate[0]->mhfs[idx] & ~mask) | val; - wlc_hw->bandstate[1]->mhfs[idx] = - (wlc_hw->bandstate[1]->mhfs[idx] & ~mask) | val; - } -} - -/* set the maccontrol register to desired reset state and - * initialize the sw cache of the register - */ -static void brcms_c_mctrl_reset(struct brcms_hardware *wlc_hw) -{ - /* IHR accesses are always enabled, PSM disabled, HPS off and WAKE on */ - wlc_hw->maccontrol = 0; - wlc_hw->suspended_fifos = 0; - wlc_hw->wake_override = 0; - wlc_hw->mute_override = 0; - brcms_b_mctrl(wlc_hw, ~0, MCTL_IHR_EN | MCTL_WAKE); -} - -/* - * write the software state of maccontrol and - * overrides to the maccontrol register - */ -static void brcms_c_mctrl_write(struct brcms_hardware *wlc_hw) -{ - u32 maccontrol = wlc_hw->maccontrol; - - /* OR in the wake bit if overridden */ - if (wlc_hw->wake_override) - maccontrol |= MCTL_WAKE; - - /* set AP and INFRA bits for mute if needed */ - if (wlc_hw->mute_override) { - maccontrol &= ~(MCTL_AP); - maccontrol |= MCTL_INFRA; - } - - bcma_write32(wlc_hw->d11core, D11REGOFFS(maccontrol), - maccontrol); -} - -/* set or clear maccontrol bits */ -void brcms_b_mctrl(struct brcms_hardware *wlc_hw, u32 mask, u32 val) -{ - u32 maccontrol; - u32 new_maccontrol; - - if (val & ~mask) - return; /* error condition */ - maccontrol = wlc_hw->maccontrol; - new_maccontrol = (maccontrol & ~mask) | val; - - /* if the new maccontrol value is the same as the old, nothing to do */ - if (new_maccontrol == maccontrol) - return; - - /* something changed, cache the new value */ - wlc_hw->maccontrol = new_maccontrol; - - /* write the new values with overrides applied */ - brcms_c_mctrl_write(wlc_hw); -} - -void brcms_c_ucode_wake_override_set(struct brcms_hardware *wlc_hw, - u32 override_bit) -{ - if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE)) { - mboolset(wlc_hw->wake_override, override_bit); - return; - } - - mboolset(wlc_hw->wake_override, override_bit); - - brcms_c_mctrl_write(wlc_hw); - brcms_b_wait_for_wake(wlc_hw); -} - -void brcms_c_ucode_wake_override_clear(struct brcms_hardware *wlc_hw, - u32 override_bit) -{ - mboolclr(wlc_hw->wake_override, override_bit); - - if (wlc_hw->wake_override || (wlc_hw->maccontrol & MCTL_WAKE)) - return; - - brcms_c_mctrl_write(wlc_hw); -} - -/* When driver needs ucode to stop beaconing, it has to make sure that - * MCTL_AP is clear and MCTL_INFRA is set - * Mode MCTL_AP MCTL_INFRA - * AP 1 1 - * STA 0 1 <--- This will ensure no beacons - * IBSS 0 0 - */ -static void brcms_c_ucode_mute_override_set(struct brcms_hardware *wlc_hw) -{ - wlc_hw->mute_override = 1; - - /* if maccontrol already has AP == 0 and INFRA == 1 without this - * override, then there is no change to write - */ - if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA) - return; - - brcms_c_mctrl_write(wlc_hw); -} - -/* Clear the override on AP and INFRA bits */ -static void brcms_c_ucode_mute_override_clear(struct brcms_hardware *wlc_hw) -{ - if (wlc_hw->mute_override == 0) - return; - - wlc_hw->mute_override = 0; - - /* if maccontrol already has AP == 0 and INFRA == 1 without this - * override, then there is no change to write - */ - if ((wlc_hw->maccontrol & (MCTL_AP | MCTL_INFRA)) == MCTL_INFRA) - return; - - brcms_c_mctrl_write(wlc_hw); -} - -/* - * Write a MAC address to the given match reg offset in the RXE match engine. - */ -static void -brcms_b_set_addrmatch(struct brcms_hardware *wlc_hw, int match_reg_offset, - const u8 *addr) -{ - struct bcma_device *core = wlc_hw->d11core; - u16 mac_l; - u16 mac_m; - u16 mac_h; - - brcms_dbg_rx(core, "wl%d: brcms_b_set_addrmatch\n", wlc_hw->unit); - - mac_l = addr[0] | (addr[1] << 8); - mac_m = addr[2] | (addr[3] << 8); - mac_h = addr[4] | (addr[5] << 8); - - /* enter the MAC addr into the RXE match registers */ - bcma_write16(core, D11REGOFFS(rcm_ctl), - RCM_INC_DATA | match_reg_offset); - bcma_write16(core, D11REGOFFS(rcm_mat_data), mac_l); - bcma_write16(core, D11REGOFFS(rcm_mat_data), mac_m); - bcma_write16(core, D11REGOFFS(rcm_mat_data), mac_h); -} - -void -brcms_b_write_template_ram(struct brcms_hardware *wlc_hw, int offset, int len, - void *buf) -{ - struct bcma_device *core = wlc_hw->d11core; - u32 word; - __le32 word_le; - __be32 word_be; - bool be_bit; - brcms_dbg_info(core, "wl%d\n", wlc_hw->unit); - - bcma_write32(core, D11REGOFFS(tplatewrptr), offset); - - /* if MCTL_BIGEND bit set in mac control register, - * the chip swaps data in fifo, as well as data in - * template ram - */ - be_bit = (bcma_read32(core, D11REGOFFS(maccontrol)) & MCTL_BIGEND) != 0; - - while (len > 0) { - memcpy(&word, buf, sizeof(u32)); - - if (be_bit) { - word_be = cpu_to_be32(word); - word = *(u32 *)&word_be; - } else { - word_le = cpu_to_le32(word); - word = *(u32 *)&word_le; - } - - bcma_write32(core, D11REGOFFS(tplatewrdata), word); - - buf = (u8 *) buf + sizeof(u32); - len -= sizeof(u32); - } -} - -static void brcms_b_set_cwmin(struct brcms_hardware *wlc_hw, u16 newmin) -{ - wlc_hw->band->CWmin = newmin; - - bcma_write32(wlc_hw->d11core, D11REGOFFS(objaddr), - OBJADDR_SCR_SEL | S_DOT11_CWMIN); - (void)bcma_read32(wlc_hw->d11core, D11REGOFFS(objaddr)); - bcma_write32(wlc_hw->d11core, D11REGOFFS(objdata), newmin); -} - -static void brcms_b_set_cwmax(struct brcms_hardware *wlc_hw, u16 newmax) -{ - wlc_hw->band->CWmax = newmax; - - bcma_write32(wlc_hw->d11core, D11REGOFFS(objaddr), - OBJADDR_SCR_SEL | S_DOT11_CWMAX); - (void)bcma_read32(wlc_hw->d11core, D11REGOFFS(objaddr)); - bcma_write32(wlc_hw->d11core, D11REGOFFS(objdata), newmax); -} - -void brcms_b_bw_set(struct brcms_hardware *wlc_hw, u16 bw) -{ - bool fastclk; - - /* request FAST clock if not on */ - fastclk = wlc_hw->forcefastclk; - if (!fastclk) - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - - wlc_phy_bw_state_set(wlc_hw->band->pi, bw); - - brcms_b_phy_reset(wlc_hw); - wlc_phy_init(wlc_hw->band->pi, wlc_phy_chanspec_get(wlc_hw->band->pi)); - - /* restore the clk */ - if (!fastclk) - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_DYNAMIC); -} - -static void brcms_b_upd_synthpu(struct brcms_hardware *wlc_hw) -{ - u16 v; - struct brcms_c_info *wlc = wlc_hw->wlc; - /* update SYNTHPU_DLY */ - - if (BRCMS_ISLCNPHY(wlc->band)) - v = SYNTHPU_DLY_LPPHY_US; - else if (BRCMS_ISNPHY(wlc->band) && (NREV_GE(wlc->band->phyrev, 3))) - v = SYNTHPU_DLY_NPHY_US; - else - v = SYNTHPU_DLY_BPHY_US; - - brcms_b_write_shm(wlc_hw, M_SYNTHPU_DLY, v); -} - -static void brcms_c_ucode_txant_set(struct brcms_hardware *wlc_hw) -{ - u16 phyctl; - u16 phytxant = wlc_hw->bmac_phytxant; - u16 mask = PHY_TXC_ANT_MASK; - - /* set the Probe Response frame phy control word */ - phyctl = brcms_b_read_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS); - phyctl = (phyctl & ~mask) | phytxant; - brcms_b_write_shm(wlc_hw, M_CTXPRS_BLK + C_CTX_PCTLWD_POS, phyctl); - - /* set the Response (ACK/CTS) frame phy control word */ - phyctl = brcms_b_read_shm(wlc_hw, M_RSP_PCTLWD); - phyctl = (phyctl & ~mask) | phytxant; - brcms_b_write_shm(wlc_hw, M_RSP_PCTLWD, phyctl); -} - -static u16 brcms_b_ofdm_ratetable_offset(struct brcms_hardware *wlc_hw, - u8 rate) -{ - uint i; - u8 plcp_rate = 0; - struct plcp_signal_rate_lookup { - u8 rate; - u8 signal_rate; - }; - /* OFDM RATE sub-field of PLCP SIGNAL field, per 802.11 sec 17.3.4.1 */ - const struct plcp_signal_rate_lookup rate_lookup[] = { - {BRCM_RATE_6M, 0xB}, - {BRCM_RATE_9M, 0xF}, - {BRCM_RATE_12M, 0xA}, - {BRCM_RATE_18M, 0xE}, - {BRCM_RATE_24M, 0x9}, - {BRCM_RATE_36M, 0xD}, - {BRCM_RATE_48M, 0x8}, - {BRCM_RATE_54M, 0xC} - }; - - for (i = 0; i < ARRAY_SIZE(rate_lookup); i++) { - if (rate == rate_lookup[i].rate) { - plcp_rate = rate_lookup[i].signal_rate; - break; - } - } - - /* Find the SHM pointer to the rate table entry by looking in the - * Direct-map Table - */ - return 2 * brcms_b_read_shm(wlc_hw, M_RT_DIRMAP_A + (plcp_rate * 2)); -} - -static void brcms_upd_ofdm_pctl1_table(struct brcms_hardware *wlc_hw) -{ - u8 rate; - u8 rates[8] = { - BRCM_RATE_6M, BRCM_RATE_9M, BRCM_RATE_12M, BRCM_RATE_18M, - BRCM_RATE_24M, BRCM_RATE_36M, BRCM_RATE_48M, BRCM_RATE_54M - }; - u16 entry_ptr; - u16 pctl1; - uint i; - - if (!BRCMS_PHY_11N_CAP(wlc_hw->band)) - return; - - /* walk the phy rate table and update the entries */ - for (i = 0; i < ARRAY_SIZE(rates); i++) { - rate = rates[i]; - - entry_ptr = brcms_b_ofdm_ratetable_offset(wlc_hw, rate); - - /* read the SHM Rate Table entry OFDM PCTL1 values */ - pctl1 = - brcms_b_read_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS); - - /* modify the value */ - pctl1 &= ~PHY_TXC1_MODE_MASK; - pctl1 |= (wlc_hw->hw_stf_ss_opmode << PHY_TXC1_MODE_SHIFT); - - /* Update the SHM Rate Table entry OFDM PCTL1 values */ - brcms_b_write_shm(wlc_hw, entry_ptr + M_RT_OFDM_PCTL1_POS, - pctl1); - } -} - -/* band-specific init */ -static void brcms_b_bsinit(struct brcms_c_info *wlc, u16 chanspec) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - - brcms_dbg_mac80211(wlc_hw->d11core, "wl%d: bandunit %d\n", wlc_hw->unit, - wlc_hw->band->bandunit); - - brcms_c_ucode_bsinit(wlc_hw); - - wlc_phy_init(wlc_hw->band->pi, chanspec); - - brcms_c_ucode_txant_set(wlc_hw); - - /* - * cwmin is band-specific, update hardware - * with value for current band - */ - brcms_b_set_cwmin(wlc_hw, wlc_hw->band->CWmin); - brcms_b_set_cwmax(wlc_hw, wlc_hw->band->CWmax); - - brcms_b_update_slot_timing(wlc_hw, - wlc_hw->band->bandtype == BRCM_BAND_5G ? - true : wlc_hw->shortslot); - - /* write phytype and phyvers */ - brcms_b_write_shm(wlc_hw, M_PHYTYPE, (u16) wlc_hw->band->phytype); - brcms_b_write_shm(wlc_hw, M_PHYVER, (u16) wlc_hw->band->phyrev); - - /* - * initialize the txphyctl1 rate table since - * shmem is shared between bands - */ - brcms_upd_ofdm_pctl1_table(wlc_hw); - - brcms_b_upd_synthpu(wlc_hw); -} - -/* Perform a soft reset of the PHY PLL */ -void brcms_b_core_phypll_reset(struct brcms_hardware *wlc_hw) -{ - ai_cc_reg(wlc_hw->sih, offsetof(struct chipcregs, chipcontrol_addr), - ~0, 0); - udelay(1); - ai_cc_reg(wlc_hw->sih, offsetof(struct chipcregs, chipcontrol_data), - 0x4, 0); - udelay(1); - ai_cc_reg(wlc_hw->sih, offsetof(struct chipcregs, chipcontrol_data), - 0x4, 4); - udelay(1); - ai_cc_reg(wlc_hw->sih, offsetof(struct chipcregs, chipcontrol_data), - 0x4, 0); - udelay(1); -} - -/* light way to turn on phy clock without reset for NPHY only - * refer to brcms_b_core_phy_clk for full version - */ -void brcms_b_phyclk_fgc(struct brcms_hardware *wlc_hw, bool clk) -{ - /* support(necessary for NPHY and HYPHY) only */ - if (!BRCMS_ISNPHY(wlc_hw->band)) - return; - - if (ON == clk) - brcms_b_core_ioctl(wlc_hw, SICF_FGC, SICF_FGC); - else - brcms_b_core_ioctl(wlc_hw, SICF_FGC, 0); - -} - -void brcms_b_macphyclk_set(struct brcms_hardware *wlc_hw, bool clk) -{ - if (ON == clk) - brcms_b_core_ioctl(wlc_hw, SICF_MPCLKE, SICF_MPCLKE); - else - brcms_b_core_ioctl(wlc_hw, SICF_MPCLKE, 0); -} - -void brcms_b_phy_reset(struct brcms_hardware *wlc_hw) -{ - struct brcms_phy_pub *pih = wlc_hw->band->pi; - u32 phy_bw_clkbits; - bool phy_in_reset = false; - - brcms_dbg_info(wlc_hw->d11core, "wl%d: reset phy\n", wlc_hw->unit); - - if (pih == NULL) - return; - - phy_bw_clkbits = wlc_phy_clk_bwbits(wlc_hw->band->pi); - - /* Specific reset sequence required for NPHY rev 3 and 4 */ - if (BRCMS_ISNPHY(wlc_hw->band) && NREV_GE(wlc_hw->band->phyrev, 3) && - NREV_LE(wlc_hw->band->phyrev, 4)) { - /* Set the PHY bandwidth */ - brcms_b_core_ioctl(wlc_hw, SICF_BWMASK, phy_bw_clkbits); - - udelay(1); - - /* Perform a soft reset of the PHY PLL */ - brcms_b_core_phypll_reset(wlc_hw); - - /* reset the PHY */ - brcms_b_core_ioctl(wlc_hw, (SICF_PRST | SICF_PCLKE), - (SICF_PRST | SICF_PCLKE)); - phy_in_reset = true; - } else { - brcms_b_core_ioctl(wlc_hw, - (SICF_PRST | SICF_PCLKE | SICF_BWMASK), - (SICF_PRST | SICF_PCLKE | phy_bw_clkbits)); - } - - udelay(2); - brcms_b_core_phy_clk(wlc_hw, ON); - - if (pih) - wlc_phy_anacore(pih, ON); -} - -/* switch to and initialize new band */ -static void brcms_b_setband(struct brcms_hardware *wlc_hw, uint bandunit, - u16 chanspec) { - struct brcms_c_info *wlc = wlc_hw->wlc; - u32 macintmask; - - /* Enable the d11 core before accessing it */ - if (!bcma_core_is_enabled(wlc_hw->d11core)) { - bcma_core_enable(wlc_hw->d11core, 0); - brcms_c_mctrl_reset(wlc_hw); - } - - macintmask = brcms_c_setband_inact(wlc, bandunit); - - if (!wlc_hw->up) - return; - - brcms_b_core_phy_clk(wlc_hw, ON); - - /* band-specific initializations */ - brcms_b_bsinit(wlc, chanspec); - - /* - * If there are any pending software interrupt bits, - * then replace these with a harmless nonzero value - * so brcms_c_dpc() will re-enable interrupts when done. - */ - if (wlc->macintstatus) - wlc->macintstatus = MI_DMAINT; - - /* restore macintmask */ - brcms_intrsrestore(wlc->wl, macintmask); - - /* ucode should still be suspended.. */ - WARN_ON((bcma_read32(wlc_hw->d11core, D11REGOFFS(maccontrol)) & - MCTL_EN_MAC) != 0); -} - -static bool brcms_c_isgoodchip(struct brcms_hardware *wlc_hw) -{ - - /* reject unsupported corerev */ - if (!CONF_HAS(D11CONF, wlc_hw->corerev)) { - wiphy_err(wlc_hw->wlc->wiphy, "unsupported core rev %d\n", - wlc_hw->corerev); - return false; - } - - return true; -} - -/* Validate some board info parameters */ -static bool brcms_c_validboardtype(struct brcms_hardware *wlc_hw) -{ - uint boardrev = wlc_hw->boardrev; - - /* 4 bits each for board type, major, minor, and tiny version */ - uint brt = (boardrev & 0xf000) >> 12; - uint b0 = (boardrev & 0xf00) >> 8; - uint b1 = (boardrev & 0xf0) >> 4; - uint b2 = boardrev & 0xf; - - /* voards from other vendors are always considered valid */ - if (ai_get_boardvendor(wlc_hw->sih) != PCI_VENDOR_ID_BROADCOM) - return true; - - /* do some boardrev sanity checks when boardvendor is Broadcom */ - if (boardrev == 0) - return false; - - if (boardrev <= 0xff) - return true; - - if ((brt > 2) || (brt == 0) || (b0 > 9) || (b0 == 0) || (b1 > 9) - || (b2 > 9)) - return false; - - return true; -} - -static void brcms_c_get_macaddr(struct brcms_hardware *wlc_hw, u8 etheraddr[ETH_ALEN]) -{ - struct ssb_sprom *sprom = &wlc_hw->d11core->bus->sprom; - - /* If macaddr exists, use it (Sromrev4, CIS, ...). */ - if (!is_zero_ether_addr(sprom->il0mac)) { - memcpy(etheraddr, sprom->il0mac, ETH_ALEN); - return; - } - - if (wlc_hw->_nbands > 1) - memcpy(etheraddr, sprom->et1mac, ETH_ALEN); - else - memcpy(etheraddr, sprom->il0mac, ETH_ALEN); -} - -/* power both the pll and external oscillator on/off */ -static void brcms_b_xtal(struct brcms_hardware *wlc_hw, bool want) -{ - brcms_dbg_info(wlc_hw->d11core, "wl%d: want %d\n", wlc_hw->unit, want); - - /* - * dont power down if plldown is false or - * we must poll hw radio disable - */ - if (!want && wlc_hw->pllreq) - return; - - wlc_hw->sbclk = want; - if (!wlc_hw->sbclk) { - wlc_hw->clk = false; - if (wlc_hw->band && wlc_hw->band->pi) - wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false); - } -} - -/* - * Return true if radio is disabled, otherwise false. - * hw radio disable signal is an external pin, users activate it asynchronously - * this function could be called when driver is down and w/o clock - * it operates on different registers depending on corerev and boardflag. - */ -static bool brcms_b_radio_read_hwdisabled(struct brcms_hardware *wlc_hw) -{ - bool v, clk, xtal; - u32 flags = 0; - - xtal = wlc_hw->sbclk; - if (!xtal) - brcms_b_xtal(wlc_hw, ON); - - /* may need to take core out of reset first */ - clk = wlc_hw->clk; - if (!clk) { - /* - * mac no longer enables phyclk automatically when driver - * accesses phyreg throughput mac. This can be skipped since - * only mac reg is accessed below - */ - if (D11REV_GE(wlc_hw->corerev, 18)) - flags |= SICF_PCLKE; - - /* - * TODO: test suspend/resume - * - * AI chip doesn't restore bar0win2 on - * hibernation/resume, need sw fixup - */ - - bcma_core_enable(wlc_hw->d11core, flags); - brcms_c_mctrl_reset(wlc_hw); - } - - v = ((bcma_read32(wlc_hw->d11core, - D11REGOFFS(phydebug)) & PDBG_RFD) != 0); - - /* put core back into reset */ - if (!clk) - bcma_core_disable(wlc_hw->d11core, 0); - - if (!xtal) - brcms_b_xtal(wlc_hw, OFF); - - return v; -} - -static bool wlc_dma_rxreset(struct brcms_hardware *wlc_hw, uint fifo) -{ - struct dma_pub *di = wlc_hw->di[fifo]; - return dma_rxreset(di); -} - -/* d11 core reset - * ensure fask clock during reset - * reset dma - * reset d11(out of reset) - * reset phy(out of reset) - * clear software macintstatus for fresh new start - * one testing hack wlc_hw->noreset will bypass the d11/phy reset - */ -void brcms_b_corereset(struct brcms_hardware *wlc_hw, u32 flags) -{ - uint i; - bool fastclk; - - if (flags == BRCMS_USE_COREFLAGS) - flags = (wlc_hw->band->pi ? wlc_hw->band->core_flags : 0); - - brcms_dbg_info(wlc_hw->d11core, "wl%d: core reset\n", wlc_hw->unit); - - /* request FAST clock if not on */ - fastclk = wlc_hw->forcefastclk; - if (!fastclk) - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - - /* reset the dma engines except first time thru */ - if (bcma_core_is_enabled(wlc_hw->d11core)) { - for (i = 0; i < NFIFO; i++) - if ((wlc_hw->di[i]) && (!dma_txreset(wlc_hw->di[i]))) - brcms_err(wlc_hw->d11core, "wl%d: %s: " - "dma_txreset[%d]: cannot stop dma\n", - wlc_hw->unit, __func__, i); - - if ((wlc_hw->di[RX_FIFO]) - && (!wlc_dma_rxreset(wlc_hw, RX_FIFO))) - brcms_err(wlc_hw->d11core, "wl%d: %s: dma_rxreset" - "[%d]: cannot stop dma\n", - wlc_hw->unit, __func__, RX_FIFO); - } - /* if noreset, just stop the psm and return */ - if (wlc_hw->noreset) { - wlc_hw->wlc->macintstatus = 0; /* skip wl_dpc after down */ - brcms_b_mctrl(wlc_hw, MCTL_PSM_RUN | MCTL_EN_MAC, 0); - return; - } - - /* - * mac no longer enables phyclk automatically when driver accesses - * phyreg throughput mac, AND phy_reset is skipped at early stage when - * band->pi is invalid. need to enable PHY CLK - */ - if (D11REV_GE(wlc_hw->corerev, 18)) - flags |= SICF_PCLKE; - - /* - * reset the core - * In chips with PMU, the fastclk request goes through d11 core - * reg 0x1e0, which is cleared by the core_reset. have to re-request it. - * - * This adds some delay and we can optimize it by also requesting - * fastclk through chipcommon during this period if necessary. But - * that has to work coordinate with other driver like mips/arm since - * they may touch chipcommon as well. - */ - wlc_hw->clk = false; - bcma_core_enable(wlc_hw->d11core, flags); - wlc_hw->clk = true; - if (wlc_hw->band && wlc_hw->band->pi) - wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, true); - - brcms_c_mctrl_reset(wlc_hw); - - if (ai_get_cccaps(wlc_hw->sih) & CC_CAP_PMU) - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - - brcms_b_phy_reset(wlc_hw); - - /* turn on PHY_PLL */ - brcms_b_core_phypll_ctl(wlc_hw, true); - - /* clear sw intstatus */ - wlc_hw->wlc->macintstatus = 0; - - /* restore the clk setting */ - if (!fastclk) - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_DYNAMIC); -} - -/* txfifo sizes needs to be modified(increased) since the newer cores - * have more memory. - */ -static void brcms_b_corerev_fifofixup(struct brcms_hardware *wlc_hw) -{ - struct bcma_device *core = wlc_hw->d11core; - u16 fifo_nu; - u16 txfifo_startblk = TXFIFO_START_BLK, txfifo_endblk; - u16 txfifo_def, txfifo_def1; - u16 txfifo_cmd; - - /* tx fifos start at TXFIFO_START_BLK from the Base address */ - txfifo_startblk = TXFIFO_START_BLK; - - /* sequence of operations: reset fifo, set fifo size, reset fifo */ - for (fifo_nu = 0; fifo_nu < NFIFO; fifo_nu++) { - - txfifo_endblk = txfifo_startblk + wlc_hw->xmtfifo_sz[fifo_nu]; - txfifo_def = (txfifo_startblk & 0xff) | - (((txfifo_endblk - 1) & 0xff) << TXFIFO_FIFOTOP_SHIFT); - txfifo_def1 = ((txfifo_startblk >> 8) & 0x1) | - ((((txfifo_endblk - - 1) >> 8) & 0x1) << TXFIFO_FIFOTOP_SHIFT); - txfifo_cmd = - TXFIFOCMD_RESET_MASK | (fifo_nu << TXFIFOCMD_FIFOSEL_SHIFT); - - bcma_write16(core, D11REGOFFS(xmtfifocmd), txfifo_cmd); - bcma_write16(core, D11REGOFFS(xmtfifodef), txfifo_def); - bcma_write16(core, D11REGOFFS(xmtfifodef1), txfifo_def1); - - bcma_write16(core, D11REGOFFS(xmtfifocmd), txfifo_cmd); - - txfifo_startblk += wlc_hw->xmtfifo_sz[fifo_nu]; - } - /* - * need to propagate to shm location to be in sync since ucode/hw won't - * do this - */ - brcms_b_write_shm(wlc_hw, M_FIFOSIZE0, - wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]); - brcms_b_write_shm(wlc_hw, M_FIFOSIZE1, - wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]); - brcms_b_write_shm(wlc_hw, M_FIFOSIZE2, - ((wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO] << 8) | wlc_hw-> - xmtfifo_sz[TX_AC_BK_FIFO])); - brcms_b_write_shm(wlc_hw, M_FIFOSIZE3, - ((wlc_hw->xmtfifo_sz[TX_ATIM_FIFO] << 8) | wlc_hw-> - xmtfifo_sz[TX_BCMC_FIFO])); -} - -/* This function is used for changing the tsf frac register - * If spur avoidance mode is off, the mac freq will be 80/120/160Mhz - * If spur avoidance mode is on1, the mac freq will be 82/123/164Mhz - * If spur avoidance mode is on2, the mac freq will be 84/126/168Mhz - * HTPHY Formula is 2^26/freq(MHz) e.g. - * For spuron2 - 126MHz -> 2^26/126 = 532610.0 - * - 532610 = 0x82082 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x2082 - * For spuron: 123MHz -> 2^26/123 = 545600.5 - * - 545601 = 0x85341 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x5341 - * For spur off: 120MHz -> 2^26/120 = 559240.5 - * - 559241 = 0x88889 => tsf_clk_frac_h = 0x8, tsf_clk_frac_l = 0x8889 - */ - -void brcms_b_switch_macfreq(struct brcms_hardware *wlc_hw, u8 spurmode) -{ - struct bcma_device *core = wlc_hw->d11core; - - if ((ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43224) || - (ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43225)) { - if (spurmode == WL_SPURAVOID_ON2) { /* 126Mhz */ - bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x2082); - bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0x8); - } else if (spurmode == WL_SPURAVOID_ON1) { /* 123Mhz */ - bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x5341); - bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0x8); - } else { /* 120Mhz */ - bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x8889); - bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0x8); - } - } else if (BRCMS_ISLCNPHY(wlc_hw->band)) { - if (spurmode == WL_SPURAVOID_ON1) { /* 82Mhz */ - bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0x7CE0); - bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0xC); - } else { /* 80Mhz */ - bcma_write16(core, D11REGOFFS(tsf_clk_frac_l), 0xCCCD); - bcma_write16(core, D11REGOFFS(tsf_clk_frac_h), 0xC); - } - } -} - -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) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - u32 gc, gm; - - /* use GPIO select 0 to get all gpio signals from the gpio out reg */ - brcms_b_mctrl(wlc_hw, MCTL_GPOUT_SEL_MASK, 0); - - /* - * Common GPIO setup: - * G0 = LED 0 = WLAN Activity - * G1 = LED 1 = WLAN 2.4 GHz Radio State - * G2 = LED 2 = WLAN 5 GHz Radio State - * G4 = radio disable input (HI enabled, LO disabled) - */ - - gc = gm = 0; - - /* Allocate GPIOs for mimo antenna diversity feature */ - if (wlc_hw->antsel_type == ANTSEL_2x3) { - /* Enable antenna diversity, use 2x3 mode */ - brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN, - MHF3_ANTSEL_EN, BRCM_BAND_ALL); - brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE, - MHF3_ANTSEL_MODE, BRCM_BAND_ALL); - - /* init superswitch control */ - wlc_phy_antsel_init(wlc_hw->band->pi, false); - - } else if (wlc_hw->antsel_type == ANTSEL_2x4) { - gm |= gc |= (BOARD_GPIO_12 | BOARD_GPIO_13); - /* - * The board itself is powered by these GPIOs - * (when not sending pattern) so set them high - */ - bcma_set16(wlc_hw->d11core, D11REGOFFS(psm_gpio_oe), - (BOARD_GPIO_12 | BOARD_GPIO_13)); - bcma_set16(wlc_hw->d11core, D11REGOFFS(psm_gpio_out), - (BOARD_GPIO_12 | BOARD_GPIO_13)); - - /* Enable antenna diversity, use 2x4 mode */ - brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_EN, - MHF3_ANTSEL_EN, BRCM_BAND_ALL); - brcms_b_mhf(wlc_hw, MHF3, MHF3_ANTSEL_MODE, 0, - BRCM_BAND_ALL); - - /* Configure the desired clock to be 4Mhz */ - brcms_b_write_shm(wlc_hw, M_ANTSEL_CLKDIV, - ANTSEL_CLKDIV_4MHZ); - } - - /* - * gpio 9 controls the PA. ucode is responsible - * for wiggling out and oe - */ - if (wlc_hw->boardflags & BFL_PACTRL) - gm |= gc |= BOARD_GPIO_PACTRL; - - /* apply to gpiocontrol register */ - bcma_chipco_gpio_control(&wlc_hw->d11core->bus->drv_cc, gm, gc); -} - -static void brcms_ucode_write(struct brcms_hardware *wlc_hw, - const __le32 ucode[], const size_t nbytes) -{ - struct bcma_device *core = wlc_hw->d11core; - uint i; - uint count; - - brcms_dbg_info(wlc_hw->d11core, "wl%d\n", wlc_hw->unit); - - count = (nbytes / sizeof(u32)); - - bcma_write32(core, D11REGOFFS(objaddr), - OBJADDR_AUTO_INC | OBJADDR_UCM_SEL); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - for (i = 0; i < count; i++) - bcma_write32(core, D11REGOFFS(objdata), le32_to_cpu(ucode[i])); - -} - -static void brcms_ucode_download(struct brcms_hardware *wlc_hw) -{ - struct brcms_c_info *wlc; - struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode; - - wlc = wlc_hw->wlc; - - if (wlc_hw->ucode_loaded) - return; - - if (D11REV_IS(wlc_hw->corerev, 17) || D11REV_IS(wlc_hw->corerev, 23)) { - if (BRCMS_ISNPHY(wlc_hw->band)) { - brcms_ucode_write(wlc_hw, ucode->bcm43xx_16_mimo, - ucode->bcm43xx_16_mimosz); - wlc_hw->ucode_loaded = true; - } else - brcms_err(wlc_hw->d11core, - "%s: wl%d: unsupported phy in corerev %d\n", - __func__, wlc_hw->unit, wlc_hw->corerev); - } else if (D11REV_IS(wlc_hw->corerev, 24)) { - if (BRCMS_ISLCNPHY(wlc_hw->band)) { - brcms_ucode_write(wlc_hw, ucode->bcm43xx_24_lcn, - ucode->bcm43xx_24_lcnsz); - wlc_hw->ucode_loaded = true; - } else { - brcms_err(wlc_hw->d11core, - "%s: wl%d: unsupported phy in corerev %d\n", - __func__, wlc_hw->unit, wlc_hw->corerev); - } - } -} - -void brcms_b_txant_set(struct brcms_hardware *wlc_hw, u16 phytxant) -{ - /* update sw state */ - wlc_hw->bmac_phytxant = phytxant; - - /* push to ucode if up */ - if (!wlc_hw->up) - return; - brcms_c_ucode_txant_set(wlc_hw); - -} - -u16 brcms_b_get_txant(struct brcms_hardware *wlc_hw) -{ - return (u16) wlc_hw->wlc->stf->txant; -} - -void brcms_b_antsel_type_set(struct brcms_hardware *wlc_hw, u8 antsel_type) -{ - wlc_hw->antsel_type = antsel_type; - - /* Update the antsel type for phy module to use */ - wlc_phy_antsel_type_set(wlc_hw->band->pi, antsel_type); -} - -static void brcms_b_fifoerrors(struct brcms_hardware *wlc_hw) -{ - bool fatal = false; - uint unit; - uint intstatus, idx; - struct bcma_device *core = wlc_hw->d11core; - - unit = wlc_hw->unit; - - for (idx = 0; idx < NFIFO; idx++) { - /* read intstatus register and ignore any non-error bits */ - intstatus = - bcma_read32(core, - D11REGOFFS(intctrlregs[idx].intstatus)) & - I_ERRORS; - if (!intstatus) - continue; - - brcms_dbg_int(core, "wl%d: intstatus%d 0x%x\n", - unit, idx, intstatus); - - if (intstatus & I_RO) { - brcms_err(core, "wl%d: fifo %d: receive fifo " - "overflow\n", unit, idx); - fatal = true; - } - - if (intstatus & I_PC) { - brcms_err(core, "wl%d: fifo %d: descriptor error\n", - unit, idx); - fatal = true; - } - - if (intstatus & I_PD) { - brcms_err(core, "wl%d: fifo %d: data error\n", unit, - idx); - fatal = true; - } - - if (intstatus & I_DE) { - brcms_err(core, "wl%d: fifo %d: descriptor protocol " - "error\n", unit, idx); - fatal = true; - } - - if (intstatus & I_RU) - brcms_err(core, "wl%d: fifo %d: receive descriptor " - "underflow\n", idx, unit); - - if (intstatus & I_XU) { - brcms_err(core, "wl%d: fifo %d: transmit fifo " - "underflow\n", idx, unit); - fatal = true; - } - - if (fatal) { - brcms_fatal_error(wlc_hw->wlc->wl); /* big hammer */ - break; - } else - bcma_write32(core, - D11REGOFFS(intctrlregs[idx].intstatus), - intstatus); - } -} - -void brcms_c_intrson(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - wlc->macintmask = wlc->defmacintmask; - bcma_write32(wlc_hw->d11core, D11REGOFFS(macintmask), wlc->macintmask); -} - -u32 brcms_c_intrsoff(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - u32 macintmask; - - if (!wlc_hw->clk) - return 0; - - macintmask = wlc->macintmask; /* isr can still happen */ - - bcma_write32(wlc_hw->d11core, D11REGOFFS(macintmask), 0); - (void)bcma_read32(wlc_hw->d11core, D11REGOFFS(macintmask)); - udelay(1); /* ensure int line is no longer driven */ - wlc->macintmask = 0; - - /* return previous macintmask; resolve race between us and our isr */ - return wlc->macintstatus ? 0 : macintmask; -} - -void brcms_c_intrsrestore(struct brcms_c_info *wlc, u32 macintmask) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - if (!wlc_hw->clk) - return; - - wlc->macintmask = macintmask; - bcma_write32(wlc_hw->d11core, D11REGOFFS(macintmask), wlc->macintmask); -} - -/* assumes that the d11 MAC is enabled */ -static void brcms_b_tx_fifo_suspend(struct brcms_hardware *wlc_hw, - uint tx_fifo) -{ - u8 fifo = 1 << tx_fifo; - - /* Two clients of this code, 11h Quiet period and scanning. */ - - /* only suspend if not already suspended */ - if ((wlc_hw->suspended_fifos & fifo) == fifo) - return; - - /* force the core awake only if not already */ - if (wlc_hw->suspended_fifos == 0) - brcms_c_ucode_wake_override_set(wlc_hw, - BRCMS_WAKE_OVERRIDE_TXFIFO); - - wlc_hw->suspended_fifos |= fifo; - - if (wlc_hw->di[tx_fifo]) { - /* - * Suspending AMPDU transmissions in the middle can cause - * underflow which may result in mismatch between ucode and - * driver so suspend the mac before suspending the FIFO - */ - if (BRCMS_PHY_11N_CAP(wlc_hw->band)) - brcms_c_suspend_mac_and_wait(wlc_hw->wlc); - - dma_txsuspend(wlc_hw->di[tx_fifo]); - - if (BRCMS_PHY_11N_CAP(wlc_hw->band)) - brcms_c_enable_mac(wlc_hw->wlc); - } -} - -static void brcms_b_tx_fifo_resume(struct brcms_hardware *wlc_hw, - uint tx_fifo) -{ - /* BMAC_NOTE: BRCMS_TX_FIFO_ENAB is done in brcms_c_dpc() for DMA case - * but need to be done here for PIO otherwise the watchdog will catch - * the inconsistency and fire - */ - /* Two clients of this code, 11h Quiet period and scanning. */ - if (wlc_hw->di[tx_fifo]) - dma_txresume(wlc_hw->di[tx_fifo]); - - /* allow core to sleep again */ - if (wlc_hw->suspended_fifos == 0) - return; - else { - wlc_hw->suspended_fifos &= ~(1 << tx_fifo); - if (wlc_hw->suspended_fifos == 0) - brcms_c_ucode_wake_override_clear(wlc_hw, - BRCMS_WAKE_OVERRIDE_TXFIFO); - } -} - -/* precondition: requires the mac core to be enabled */ -static void brcms_b_mute(struct brcms_hardware *wlc_hw, bool mute_tx) -{ - static const u8 null_ether_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0}; - u8 *ethaddr = wlc_hw->wlc->pub->cur_etheraddr; - - if (mute_tx) { - /* suspend tx fifos */ - brcms_b_tx_fifo_suspend(wlc_hw, TX_DATA_FIFO); - brcms_b_tx_fifo_suspend(wlc_hw, TX_CTL_FIFO); - brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_BK_FIFO); - brcms_b_tx_fifo_suspend(wlc_hw, TX_AC_VI_FIFO); - - /* zero the address match register so we do not send ACKs */ - brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET, null_ether_addr); - } else { - /* resume tx fifos */ - brcms_b_tx_fifo_resume(wlc_hw, TX_DATA_FIFO); - brcms_b_tx_fifo_resume(wlc_hw, TX_CTL_FIFO); - brcms_b_tx_fifo_resume(wlc_hw, TX_AC_BK_FIFO); - brcms_b_tx_fifo_resume(wlc_hw, TX_AC_VI_FIFO); - - /* Restore address */ - brcms_b_set_addrmatch(wlc_hw, RCM_MAC_OFFSET, ethaddr); - } - - wlc_phy_mute_upd(wlc_hw->band->pi, mute_tx, 0); - - if (mute_tx) - brcms_c_ucode_mute_override_set(wlc_hw); - else - brcms_c_ucode_mute_override_clear(wlc_hw); -} - -void -brcms_c_mute(struct brcms_c_info *wlc, bool mute_tx) -{ - brcms_b_mute(wlc->hw, mute_tx); -} - -/* - * Read and clear macintmask and macintstatus and intstatus registers. - * This routine should be called with interrupts off - * Return: - * -1 if brcms_deviceremoved(wlc) evaluates to true; - * 0 if the interrupt is not for us, or we are in some special cases; - * device interrupt status bits otherwise. - */ -static inline u32 wlc_intstatus(struct brcms_c_info *wlc, bool in_isr) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - struct bcma_device *core = wlc_hw->d11core; - u32 macintstatus, mask; - - /* macintstatus includes a DMA interrupt summary bit */ - macintstatus = bcma_read32(core, D11REGOFFS(macintstatus)); - mask = in_isr ? wlc->macintmask : wlc->defmacintmask; - - trace_brcms_macintstatus(&core->dev, in_isr, macintstatus, mask); - - /* detect cardbus removed, in power down(suspend) and in reset */ - if (brcms_deviceremoved(wlc)) - return -1; - - /* brcms_deviceremoved() succeeds even when the core is still resetting, - * handle that case here. - */ - if (macintstatus == 0xffffffff) - return 0; - - /* defer unsolicited interrupts */ - macintstatus &= mask; - - /* if not for us */ - if (macintstatus == 0) - return 0; - - /* turn off the interrupts */ - bcma_write32(core, D11REGOFFS(macintmask), 0); - (void)bcma_read32(core, D11REGOFFS(macintmask)); - wlc->macintmask = 0; - - /* clear device interrupts */ - bcma_write32(core, D11REGOFFS(macintstatus), macintstatus); - - /* MI_DMAINT is indication of non-zero intstatus */ - if (macintstatus & MI_DMAINT) - /* - * only fifo interrupt enabled is I_RI in - * RX_FIFO. If MI_DMAINT is set, assume it - * is set and clear the interrupt. - */ - bcma_write32(core, D11REGOFFS(intctrlregs[RX_FIFO].intstatus), - DEF_RXINTMASK); - - return macintstatus; -} - -/* Update wlc->macintstatus and wlc->intstatus[]. */ -/* Return true if they are updated successfully. false otherwise */ -bool brcms_c_intrsupd(struct brcms_c_info *wlc) -{ - u32 macintstatus; - - /* read and clear macintstatus and intstatus registers */ - macintstatus = wlc_intstatus(wlc, false); - - /* device is removed */ - if (macintstatus == 0xffffffff) - return false; - - /* update interrupt status in software */ - wlc->macintstatus |= macintstatus; - - return true; -} - -/* - * First-level interrupt processing. - * Return true if this was our interrupt - * and if further brcms_c_dpc() processing is required, - * false otherwise. - */ -bool brcms_c_isr(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - u32 macintstatus; - - if (!wlc_hw->up || !wlc->macintmask) - return false; - - /* read and clear macintstatus and intstatus registers */ - macintstatus = wlc_intstatus(wlc, true); - - if (macintstatus == 0xffffffff) { - brcms_err(wlc_hw->d11core, - "DEVICEREMOVED detected in the ISR code path\n"); - return false; - } - - /* it is not for us */ - if (macintstatus == 0) - return false; - - /* save interrupt status bits */ - wlc->macintstatus = macintstatus; - - return true; - -} - -void brcms_c_suspend_mac_and_wait(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - struct bcma_device *core = wlc_hw->d11core; - u32 mc, mi; - - brcms_dbg_mac80211(core, "wl%d: bandunit %d\n", wlc_hw->unit, - wlc_hw->band->bandunit); - - /* - * Track overlapping suspend requests - */ - wlc_hw->mac_suspend_depth++; - if (wlc_hw->mac_suspend_depth > 1) - return; - - /* force the core awake */ - brcms_c_ucode_wake_override_set(wlc_hw, BRCMS_WAKE_OVERRIDE_MACSUSPEND); - - mc = bcma_read32(core, D11REGOFFS(maccontrol)); - - if (mc == 0xffffffff) { - brcms_err(core, "wl%d: %s: dead chip\n", wlc_hw->unit, - __func__); - brcms_down(wlc->wl); - return; - } - WARN_ON(mc & MCTL_PSM_JMP_0); - WARN_ON(!(mc & MCTL_PSM_RUN)); - WARN_ON(!(mc & MCTL_EN_MAC)); - - mi = bcma_read32(core, D11REGOFFS(macintstatus)); - if (mi == 0xffffffff) { - brcms_err(core, "wl%d: %s: dead chip\n", wlc_hw->unit, - __func__); - brcms_down(wlc->wl); - return; - } - WARN_ON(mi & MI_MACSSPNDD); - - brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, 0); - - SPINWAIT(!(bcma_read32(core, D11REGOFFS(macintstatus)) & MI_MACSSPNDD), - BRCMS_MAX_MAC_SUSPEND); - - if (!(bcma_read32(core, D11REGOFFS(macintstatus)) & MI_MACSSPNDD)) { - brcms_err(core, "wl%d: wlc_suspend_mac_and_wait: waited %d uS" - " and MI_MACSSPNDD is still not on.\n", - wlc_hw->unit, BRCMS_MAX_MAC_SUSPEND); - brcms_err(core, "wl%d: psmdebug 0x%08x, phydebug 0x%08x, " - "psm_brc 0x%04x\n", wlc_hw->unit, - bcma_read32(core, D11REGOFFS(psmdebug)), - bcma_read32(core, D11REGOFFS(phydebug)), - bcma_read16(core, D11REGOFFS(psm_brc))); - } - - mc = bcma_read32(core, D11REGOFFS(maccontrol)); - if (mc == 0xffffffff) { - brcms_err(core, "wl%d: %s: dead chip\n", wlc_hw->unit, - __func__); - brcms_down(wlc->wl); - return; - } - WARN_ON(mc & MCTL_PSM_JMP_0); - WARN_ON(!(mc & MCTL_PSM_RUN)); - WARN_ON(mc & MCTL_EN_MAC); -} - -void brcms_c_enable_mac(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - struct bcma_device *core = wlc_hw->d11core; - u32 mc, mi; - - brcms_dbg_mac80211(core, "wl%d: bandunit %d\n", wlc_hw->unit, - wlc->band->bandunit); - - /* - * Track overlapping suspend requests - */ - wlc_hw->mac_suspend_depth--; - if (wlc_hw->mac_suspend_depth > 0) - return; - - mc = bcma_read32(core, D11REGOFFS(maccontrol)); - WARN_ON(mc & MCTL_PSM_JMP_0); - WARN_ON(mc & MCTL_EN_MAC); - WARN_ON(!(mc & MCTL_PSM_RUN)); - - brcms_b_mctrl(wlc_hw, MCTL_EN_MAC, MCTL_EN_MAC); - bcma_write32(core, D11REGOFFS(macintstatus), MI_MACSSPNDD); - - mc = bcma_read32(core, D11REGOFFS(maccontrol)); - WARN_ON(mc & MCTL_PSM_JMP_0); - WARN_ON(!(mc & MCTL_EN_MAC)); - WARN_ON(!(mc & MCTL_PSM_RUN)); - - mi = bcma_read32(core, D11REGOFFS(macintstatus)); - WARN_ON(mi & MI_MACSSPNDD); - - brcms_c_ucode_wake_override_clear(wlc_hw, - BRCMS_WAKE_OVERRIDE_MACSUSPEND); -} - -void brcms_b_band_stf_ss_set(struct brcms_hardware *wlc_hw, u8 stf_mode) -{ - wlc_hw->hw_stf_ss_opmode = stf_mode; - - if (wlc_hw->clk) - brcms_upd_ofdm_pctl1_table(wlc_hw); -} - -static bool brcms_b_validate_chip_access(struct brcms_hardware *wlc_hw) -{ - struct bcma_device *core = wlc_hw->d11core; - u32 w, val; - struct wiphy *wiphy = wlc_hw->wlc->wiphy; - - /* Validate dchip register access */ - - bcma_write32(core, D11REGOFFS(objaddr), OBJADDR_SHM_SEL | 0); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - w = bcma_read32(core, D11REGOFFS(objdata)); - - /* Can we write and read back a 32bit register? */ - bcma_write32(core, D11REGOFFS(objaddr), OBJADDR_SHM_SEL | 0); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - bcma_write32(core, D11REGOFFS(objdata), (u32) 0xaa5555aa); - - bcma_write32(core, D11REGOFFS(objaddr), OBJADDR_SHM_SEL | 0); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - val = bcma_read32(core, D11REGOFFS(objdata)); - if (val != (u32) 0xaa5555aa) { - wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, " - "expected 0xaa5555aa\n", wlc_hw->unit, val); - return false; - } - - bcma_write32(core, D11REGOFFS(objaddr), OBJADDR_SHM_SEL | 0); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - bcma_write32(core, D11REGOFFS(objdata), (u32) 0x55aaaa55); - - bcma_write32(core, D11REGOFFS(objaddr), OBJADDR_SHM_SEL | 0); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - val = bcma_read32(core, D11REGOFFS(objdata)); - if (val != (u32) 0x55aaaa55) { - wiphy_err(wiphy, "wl%d: validate_chip_access: SHM = 0x%x, " - "expected 0x55aaaa55\n", wlc_hw->unit, val); - return false; - } - - bcma_write32(core, D11REGOFFS(objaddr), OBJADDR_SHM_SEL | 0); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - bcma_write32(core, D11REGOFFS(objdata), w); - - /* clear CFPStart */ - bcma_write32(core, D11REGOFFS(tsf_cfpstart), 0); - - w = bcma_read32(core, D11REGOFFS(maccontrol)); - if ((w != (MCTL_IHR_EN | MCTL_WAKE)) && - (w != (MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE))) { - wiphy_err(wiphy, "wl%d: validate_chip_access: maccontrol = " - "0x%x, expected 0x%x or 0x%x\n", wlc_hw->unit, w, - (MCTL_IHR_EN | MCTL_WAKE), - (MCTL_IHR_EN | MCTL_GMODE | MCTL_WAKE)); - return false; - } - - return true; -} - -#define PHYPLL_WAIT_US 100000 - -void brcms_b_core_phypll_ctl(struct brcms_hardware *wlc_hw, bool on) -{ - struct bcma_device *core = wlc_hw->d11core; - u32 tmp; - - brcms_dbg_info(core, "wl%d\n", wlc_hw->unit); - - tmp = 0; - - if (on) { - if ((ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM4313)) { - bcma_set32(core, D11REGOFFS(clk_ctl_st), - CCS_ERSRC_REQ_HT | - CCS_ERSRC_REQ_D11PLL | - CCS_ERSRC_REQ_PHYPLL); - SPINWAIT((bcma_read32(core, D11REGOFFS(clk_ctl_st)) & - CCS_ERSRC_AVAIL_HT) != CCS_ERSRC_AVAIL_HT, - PHYPLL_WAIT_US); - - tmp = bcma_read32(core, D11REGOFFS(clk_ctl_st)); - if ((tmp & CCS_ERSRC_AVAIL_HT) != CCS_ERSRC_AVAIL_HT) - brcms_err(core, "%s: turn on PHY PLL failed\n", - __func__); - } else { - bcma_set32(core, D11REGOFFS(clk_ctl_st), - tmp | CCS_ERSRC_REQ_D11PLL | - CCS_ERSRC_REQ_PHYPLL); - SPINWAIT((bcma_read32(core, D11REGOFFS(clk_ctl_st)) & - (CCS_ERSRC_AVAIL_D11PLL | - CCS_ERSRC_AVAIL_PHYPLL)) != - (CCS_ERSRC_AVAIL_D11PLL | - CCS_ERSRC_AVAIL_PHYPLL), PHYPLL_WAIT_US); - - tmp = bcma_read32(core, D11REGOFFS(clk_ctl_st)); - if ((tmp & - (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL)) - != - (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL)) - brcms_err(core, "%s: turn on PHY PLL failed\n", - __func__); - } - } else { - /* - * Since the PLL may be shared, other cores can still - * be requesting it; so we'll deassert the request but - * not wait for status to comply. - */ - bcma_mask32(core, D11REGOFFS(clk_ctl_st), - ~CCS_ERSRC_REQ_PHYPLL); - (void)bcma_read32(core, D11REGOFFS(clk_ctl_st)); - } -} - -static void brcms_c_coredisable(struct brcms_hardware *wlc_hw) -{ - bool dev_gone; - - brcms_dbg_info(wlc_hw->d11core, "wl%d: disable core\n", wlc_hw->unit); - - dev_gone = brcms_deviceremoved(wlc_hw->wlc); - - if (dev_gone) - return; - - if (wlc_hw->noreset) - return; - - /* radio off */ - wlc_phy_switch_radio(wlc_hw->band->pi, OFF); - - /* turn off analog core */ - wlc_phy_anacore(wlc_hw->band->pi, OFF); - - /* turn off PHYPLL to save power */ - brcms_b_core_phypll_ctl(wlc_hw, false); - - wlc_hw->clk = false; - bcma_core_disable(wlc_hw->d11core, 0); - wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false); -} - -static void brcms_c_flushqueues(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - uint i; - - /* free any posted tx packets */ - for (i = 0; i < NFIFO; i++) { - if (wlc_hw->di[i]) { - dma_txreclaim(wlc_hw->di[i], DMA_RANGE_ALL); - if (i < TX_BCMC_FIFO) - ieee80211_wake_queue(wlc->pub->ieee_hw, - brcms_fifo_to_ac(i)); - } - } - - /* free any posted rx packets */ - dma_rxreclaim(wlc_hw->di[RX_FIFO]); -} - -static u16 -brcms_b_read_objmem(struct brcms_hardware *wlc_hw, uint offset, u32 sel) -{ - struct bcma_device *core = wlc_hw->d11core; - u16 objoff = D11REGOFFS(objdata); - - bcma_write32(core, D11REGOFFS(objaddr), sel | (offset >> 2)); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - if (offset & 2) - objoff += 2; - - return bcma_read16(core, objoff); -} - -static void -brcms_b_write_objmem(struct brcms_hardware *wlc_hw, uint offset, u16 v, - u32 sel) -{ - struct bcma_device *core = wlc_hw->d11core; - u16 objoff = D11REGOFFS(objdata); - - bcma_write32(core, D11REGOFFS(objaddr), sel | (offset >> 2)); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - if (offset & 2) - objoff += 2; - - bcma_wflush16(core, objoff, v); -} - -/* - * Read a single u16 from shared memory. - * SHM 'offset' needs to be an even address - */ -u16 brcms_b_read_shm(struct brcms_hardware *wlc_hw, uint offset) -{ - return brcms_b_read_objmem(wlc_hw, offset, OBJADDR_SHM_SEL); -} - -/* - * Write a single u16 to shared memory. - * SHM 'offset' needs to be an even address - */ -void brcms_b_write_shm(struct brcms_hardware *wlc_hw, uint offset, u16 v) -{ - brcms_b_write_objmem(wlc_hw, offset, v, OBJADDR_SHM_SEL); -} - -/* - * Copy a buffer to shared memory of specified type . - * SHM 'offset' needs to be an even address and - * Buffer length 'len' must be an even number of bytes - * 'sel' selects the type of memory - */ -void -brcms_b_copyto_objmem(struct brcms_hardware *wlc_hw, uint offset, - const void *buf, int len, u32 sel) -{ - u16 v; - const u8 *p = (const u8 *)buf; - int i; - - if (len <= 0 || (offset & 1) || (len & 1)) - return; - - for (i = 0; i < len; i += 2) { - v = p[i] | (p[i + 1] << 8); - brcms_b_write_objmem(wlc_hw, offset + i, v, sel); - } -} - -/* - * Copy a piece of shared memory of specified type to a buffer . - * SHM 'offset' needs to be an even address and - * Buffer length 'len' must be an even number of bytes - * 'sel' selects the type of memory - */ -void -brcms_b_copyfrom_objmem(struct brcms_hardware *wlc_hw, uint offset, void *buf, - int len, u32 sel) -{ - u16 v; - u8 *p = (u8 *) buf; - int i; - - if (len <= 0 || (offset & 1) || (len & 1)) - return; - - for (i = 0; i < len; i += 2) { - v = brcms_b_read_objmem(wlc_hw, offset + i, sel); - p[i] = v & 0xFF; - p[i + 1] = (v >> 8) & 0xFF; - } -} - -/* Copy a buffer to shared memory. - * SHM 'offset' needs to be an even address and - * Buffer length 'len' must be an even number of bytes - */ -static void brcms_c_copyto_shm(struct brcms_c_info *wlc, uint offset, - const void *buf, int len) -{ - brcms_b_copyto_objmem(wlc->hw, offset, buf, len, OBJADDR_SHM_SEL); -} - -static void brcms_b_retrylimit_upd(struct brcms_hardware *wlc_hw, - u16 SRL, u16 LRL) -{ - wlc_hw->SRL = SRL; - wlc_hw->LRL = LRL; - - /* write retry limit to SCR, shouldn't need to suspend */ - if (wlc_hw->up) { - bcma_write32(wlc_hw->d11core, D11REGOFFS(objaddr), - OBJADDR_SCR_SEL | S_DOT11_SRC_LMT); - (void)bcma_read32(wlc_hw->d11core, D11REGOFFS(objaddr)); - bcma_write32(wlc_hw->d11core, D11REGOFFS(objdata), wlc_hw->SRL); - bcma_write32(wlc_hw->d11core, D11REGOFFS(objaddr), - OBJADDR_SCR_SEL | S_DOT11_LRC_LMT); - (void)bcma_read32(wlc_hw->d11core, D11REGOFFS(objaddr)); - bcma_write32(wlc_hw->d11core, D11REGOFFS(objdata), wlc_hw->LRL); - } -} - -static void brcms_b_pllreq(struct brcms_hardware *wlc_hw, bool set, u32 req_bit) -{ - if (set) { - if (mboolisset(wlc_hw->pllreq, req_bit)) - return; - - mboolset(wlc_hw->pllreq, req_bit); - - if (mboolisset(wlc_hw->pllreq, BRCMS_PLLREQ_FLIP)) { - if (!wlc_hw->sbclk) - brcms_b_xtal(wlc_hw, ON); - } - } else { - if (!mboolisset(wlc_hw->pllreq, req_bit)) - return; - - mboolclr(wlc_hw->pllreq, req_bit); - - if (mboolisset(wlc_hw->pllreq, BRCMS_PLLREQ_FLIP)) { - if (wlc_hw->sbclk) - brcms_b_xtal(wlc_hw, OFF); - } - } -} - -static void brcms_b_antsel_set(struct brcms_hardware *wlc_hw, u32 antsel_avail) -{ - wlc_hw->antsel_avail = antsel_avail; -} - -/* - * conditions under which the PM bit should be set in outgoing frames - * and STAY_AWAKE is meaningful - */ -static bool brcms_c_ps_allowed(struct brcms_c_info *wlc) -{ - /* not supporting PS so always return false for now */ - return false; -} - -static void brcms_c_statsupd(struct brcms_c_info *wlc) -{ - int i; - struct macstat *macstats; -#ifdef DEBUG - u16 delta; - u16 rxf0ovfl; - u16 txfunfl[NFIFO]; -#endif /* DEBUG */ - - /* if driver down, make no sense to update stats */ - if (!wlc->pub->up) - return; - - macstats = wlc->core->macstat_snapshot; - -#ifdef DEBUG - /* save last rx fifo 0 overflow count */ - rxf0ovfl = macstats->rxf0ovfl; - - /* save last tx fifo underflow count */ - for (i = 0; i < NFIFO; i++) - txfunfl[i] = macstats->txfunfl[i]; -#endif /* DEBUG */ - - /* Read mac stats from contiguous shared memory */ - brcms_b_copyfrom_objmem(wlc->hw, M_UCODE_MACSTAT, macstats, - sizeof(*macstats), OBJADDR_SHM_SEL); - -#ifdef DEBUG - /* check for rx fifo 0 overflow */ - delta = (u16)(macstats->rxf0ovfl - rxf0ovfl); - if (delta) - brcms_err(wlc->hw->d11core, "wl%d: %u rx fifo 0 overflows!\n", - wlc->pub->unit, delta); - - /* check for tx fifo underflows */ - for (i = 0; i < NFIFO; i++) { - delta = macstats->txfunfl[i] - txfunfl[i]; - if (delta) - brcms_err(wlc->hw->d11core, - "wl%d: %u tx fifo %d underflows!\n", - wlc->pub->unit, delta, i); - } -#endif /* DEBUG */ - - /* merge counters from dma module */ - for (i = 0; i < NFIFO; i++) { - if (wlc->hw->di[i]) - dma_counterreset(wlc->hw->di[i]); - } -} - -static void brcms_b_reset(struct brcms_hardware *wlc_hw) -{ - /* reset the core */ - if (!brcms_deviceremoved(wlc_hw->wlc)) - brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS); - - /* purge the dma rings */ - brcms_c_flushqueues(wlc_hw->wlc); -} - -void brcms_c_reset(struct brcms_c_info *wlc) -{ - brcms_dbg_info(wlc->hw->d11core, "wl%d\n", wlc->pub->unit); - - /* slurp up hw mac counters before core reset */ - brcms_c_statsupd(wlc); - - /* reset our snapshot of macstat counters */ - memset(wlc->core->macstat_snapshot, 0, sizeof(struct macstat)); - - brcms_b_reset(wlc->hw); -} - -void brcms_c_init_scb(struct scb *scb) -{ - int i; - - memset(scb, 0, sizeof(struct scb)); - scb->flags = SCB_WMECAP | SCB_HTCAP; - for (i = 0; i < NUMPRIO; i++) { - scb->seqnum[i] = 0; - scb->seqctl[i] = 0xFFFF; - } - - scb->seqctl_nonqos = 0xFFFF; - scb->magic = SCB_MAGIC; -} - -/* d11 core init - * reset PSM - * download ucode/PCM - * let ucode run to suspended - * download ucode inits - * config other core registers - * init dma - */ -static void brcms_b_coreinit(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - struct bcma_device *core = wlc_hw->d11core; - u32 sflags; - u32 bcnint_us; - uint i = 0; - bool fifosz_fixup = false; - int err = 0; - u16 buf[NFIFO]; - struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode; - - brcms_dbg_info(core, "wl%d: core init\n", wlc_hw->unit); - - /* reset PSM */ - brcms_b_mctrl(wlc_hw, ~0, (MCTL_IHR_EN | MCTL_PSM_JMP_0 | MCTL_WAKE)); - - brcms_ucode_download(wlc_hw); - /* - * FIFOSZ fixup. driver wants to controls the fifo allocation. - */ - fifosz_fixup = true; - - /* let the PSM run to the suspended state, set mode to BSS STA */ - bcma_write32(core, D11REGOFFS(macintstatus), -1); - brcms_b_mctrl(wlc_hw, ~0, - (MCTL_IHR_EN | MCTL_INFRA | MCTL_PSM_RUN | MCTL_WAKE)); - - /* wait for ucode to self-suspend after auto-init */ - SPINWAIT(((bcma_read32(core, D11REGOFFS(macintstatus)) & - MI_MACSSPNDD) == 0), 1000 * 1000); - if ((bcma_read32(core, D11REGOFFS(macintstatus)) & MI_MACSSPNDD) == 0) - brcms_err(core, "wl%d: wlc_coreinit: ucode did not self-" - "suspend!\n", wlc_hw->unit); - - brcms_c_gpio_init(wlc); - - sflags = bcma_aread32(core, BCMA_IOST); - - if (D11REV_IS(wlc_hw->corerev, 17) || D11REV_IS(wlc_hw->corerev, 23)) { - if (BRCMS_ISNPHY(wlc_hw->band)) - brcms_c_write_inits(wlc_hw, ucode->d11n0initvals16); - else - brcms_err(core, "%s: wl%d: unsupported phy in corerev" - " %d\n", __func__, wlc_hw->unit, - wlc_hw->corerev); - } else if (D11REV_IS(wlc_hw->corerev, 24)) { - if (BRCMS_ISLCNPHY(wlc_hw->band)) - brcms_c_write_inits(wlc_hw, ucode->d11lcn0initvals24); - else - brcms_err(core, "%s: wl%d: unsupported phy in corerev" - " %d\n", __func__, wlc_hw->unit, - wlc_hw->corerev); - } else { - brcms_err(core, "%s: wl%d: unsupported corerev %d\n", - __func__, wlc_hw->unit, wlc_hw->corerev); - } - - /* For old ucode, txfifo sizes needs to be modified(increased) */ - if (fifosz_fixup) - brcms_b_corerev_fifofixup(wlc_hw); - - /* check txfifo allocations match between ucode and driver */ - buf[TX_AC_BE_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE0); - if (buf[TX_AC_BE_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BE_FIFO]) { - i = TX_AC_BE_FIFO; - err = -1; - } - buf[TX_AC_VI_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE1); - if (buf[TX_AC_VI_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VI_FIFO]) { - i = TX_AC_VI_FIFO; - err = -1; - } - buf[TX_AC_BK_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE2); - buf[TX_AC_VO_FIFO] = (buf[TX_AC_BK_FIFO] >> 8) & 0xff; - buf[TX_AC_BK_FIFO] &= 0xff; - if (buf[TX_AC_BK_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_BK_FIFO]) { - i = TX_AC_BK_FIFO; - err = -1; - } - if (buf[TX_AC_VO_FIFO] != wlc_hw->xmtfifo_sz[TX_AC_VO_FIFO]) { - i = TX_AC_VO_FIFO; - err = -1; - } - buf[TX_BCMC_FIFO] = brcms_b_read_shm(wlc_hw, M_FIFOSIZE3); - buf[TX_ATIM_FIFO] = (buf[TX_BCMC_FIFO] >> 8) & 0xff; - buf[TX_BCMC_FIFO] &= 0xff; - if (buf[TX_BCMC_FIFO] != wlc_hw->xmtfifo_sz[TX_BCMC_FIFO]) { - i = TX_BCMC_FIFO; - err = -1; - } - if (buf[TX_ATIM_FIFO] != wlc_hw->xmtfifo_sz[TX_ATIM_FIFO]) { - i = TX_ATIM_FIFO; - err = -1; - } - if (err != 0) - brcms_err(core, "wlc_coreinit: txfifo mismatch: ucode size %d" - " driver size %d index %d\n", buf[i], - wlc_hw->xmtfifo_sz[i], i); - - /* make sure we can still talk to the mac */ - WARN_ON(bcma_read32(core, D11REGOFFS(maccontrol)) == 0xffffffff); - - /* band-specific inits done by wlc_bsinit() */ - - /* Set up frame burst size and antenna swap threshold init values */ - brcms_b_write_shm(wlc_hw, M_MBURST_SIZE, MAXTXFRAMEBURST); - brcms_b_write_shm(wlc_hw, M_MAX_ANTCNT, ANTCNT); - - /* enable one rx interrupt per received frame */ - bcma_write32(core, D11REGOFFS(intrcvlazy[0]), (1 << IRL_FC_SHIFT)); - - /* set the station mode (BSS STA) */ - brcms_b_mctrl(wlc_hw, - (MCTL_INFRA | MCTL_DISCARD_PMQ | MCTL_AP), - (MCTL_INFRA | MCTL_DISCARD_PMQ)); - - /* set up Beacon interval */ - bcnint_us = 0x8000 << 10; - bcma_write32(core, D11REGOFFS(tsf_cfprep), - (bcnint_us << CFPREP_CBI_SHIFT)); - bcma_write32(core, D11REGOFFS(tsf_cfpstart), bcnint_us); - bcma_write32(core, D11REGOFFS(macintstatus), MI_GP1); - - /* write interrupt mask */ - bcma_write32(core, D11REGOFFS(intctrlregs[RX_FIFO].intmask), - DEF_RXINTMASK); - - /* allow the MAC to control the PHY clock (dynamic on/off) */ - brcms_b_macphyclk_set(wlc_hw, ON); - - /* program dynamic clock control fast powerup delay register */ - wlc->fastpwrup_dly = ai_clkctl_fast_pwrup_delay(wlc_hw->sih); - bcma_write16(core, D11REGOFFS(scc_fastpwrup_dly), wlc->fastpwrup_dly); - - /* tell the ucode the corerev */ - brcms_b_write_shm(wlc_hw, M_MACHW_VER, (u16) wlc_hw->corerev); - - /* tell the ucode MAC capabilities */ - brcms_b_write_shm(wlc_hw, M_MACHW_CAP_L, - (u16) (wlc_hw->machwcap & 0xffff)); - brcms_b_write_shm(wlc_hw, M_MACHW_CAP_H, - (u16) ((wlc_hw-> - machwcap >> 16) & 0xffff)); - - /* write retry limits to SCR, this done after PSM init */ - bcma_write32(core, D11REGOFFS(objaddr), - OBJADDR_SCR_SEL | S_DOT11_SRC_LMT); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - bcma_write32(core, D11REGOFFS(objdata), wlc_hw->SRL); - bcma_write32(core, D11REGOFFS(objaddr), - OBJADDR_SCR_SEL | S_DOT11_LRC_LMT); - (void)bcma_read32(core, D11REGOFFS(objaddr)); - bcma_write32(core, D11REGOFFS(objdata), wlc_hw->LRL); - - /* write rate fallback retry limits */ - brcms_b_write_shm(wlc_hw, M_SFRMTXCNTFBRTHSD, wlc_hw->SFBL); - brcms_b_write_shm(wlc_hw, M_LFRMTXCNTFBRTHSD, wlc_hw->LFBL); - - bcma_mask16(core, D11REGOFFS(ifs_ctl), 0x0FFF); - bcma_write16(core, D11REGOFFS(ifs_aifsn), EDCF_AIFSN_MIN); - - /* init the tx dma engines */ - for (i = 0; i < NFIFO; i++) { - if (wlc_hw->di[i]) - dma_txinit(wlc_hw->di[i]); - } - - /* init the rx dma engine(s) and post receive buffers */ - dma_rxinit(wlc_hw->di[RX_FIFO]); - dma_rxfill(wlc_hw->di[RX_FIFO]); -} - -void -static brcms_b_init(struct brcms_hardware *wlc_hw, u16 chanspec) { - u32 macintmask; - bool fastclk; - struct brcms_c_info *wlc = wlc_hw->wlc; - - /* request FAST clock if not on */ - fastclk = wlc_hw->forcefastclk; - if (!fastclk) - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - - /* disable interrupts */ - macintmask = brcms_intrsoff(wlc->wl); - - /* set up the specified band and chanspec */ - brcms_c_setxband(wlc_hw, chspec_bandunit(chanspec)); - wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec); - - /* do one-time phy inits and calibration */ - wlc_phy_cal_init(wlc_hw->band->pi); - - /* core-specific initialization */ - brcms_b_coreinit(wlc); - - /* band-specific inits */ - brcms_b_bsinit(wlc, chanspec); - - /* restore macintmask */ - brcms_intrsrestore(wlc->wl, macintmask); - - /* seed wake_override with BRCMS_WAKE_OVERRIDE_MACSUSPEND since the mac - * is suspended and brcms_c_enable_mac() will clear this override bit. - */ - mboolset(wlc_hw->wake_override, BRCMS_WAKE_OVERRIDE_MACSUSPEND); - - /* - * initialize mac_suspend_depth to 1 to match ucode - * initial suspended state - */ - wlc_hw->mac_suspend_depth = 1; - - /* restore the clk */ - if (!fastclk) - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_DYNAMIC); -} - -static void brcms_c_set_phy_chanspec(struct brcms_c_info *wlc, - u16 chanspec) -{ - /* Save our copy of the chanspec */ - wlc->chanspec = chanspec; - - /* Set the chanspec and power limits for this locale */ - brcms_c_channel_set_chanspec(wlc->cmi, chanspec, BRCMS_TXPWR_MAX); - - if (wlc->stf->ss_algosel_auto) - brcms_c_stf_ss_algo_channel_get(wlc, &wlc->stf->ss_algo_channel, - chanspec); - - brcms_c_stf_ss_update(wlc, wlc->band); -} - -static void -brcms_default_rateset(struct brcms_c_info *wlc, struct brcms_c_rateset *rs) -{ - brcms_c_rateset_default(rs, NULL, wlc->band->phytype, - wlc->band->bandtype, false, BRCMS_RATE_MASK_FULL, - (bool) (wlc->pub->_n_enab & SUPPORT_11N), - brcms_chspec_bw(wlc->default_bss->chanspec), - wlc->stf->txstreams); -} - -/* derive wlc->band->basic_rate[] table from 'rateset' */ -static void brcms_c_rate_lookup_init(struct brcms_c_info *wlc, - struct brcms_c_rateset *rateset) -{ - u8 rate; - u8 mandatory; - u8 cck_basic = 0; - u8 ofdm_basic = 0; - u8 *br = wlc->band->basic_rate; - uint i; - - /* incoming rates are in 500kbps units as in 802.11 Supported Rates */ - memset(br, 0, BRCM_MAXRATE + 1); - - /* For each basic rate in the rates list, make an entry in the - * best basic lookup. - */ - for (i = 0; i < rateset->count; i++) { - /* only make an entry for a basic rate */ - if (!(rateset->rates[i] & BRCMS_RATE_FLAG)) - continue; - - /* mask off basic bit */ - rate = (rateset->rates[i] & BRCMS_RATE_MASK); - - if (rate > BRCM_MAXRATE) { - brcms_err(wlc->hw->d11core, "brcms_c_rate_lookup_init: " - "invalid rate 0x%X in rate set\n", - rateset->rates[i]); - continue; - } - - br[rate] = rate; - } - - /* The rate lookup table now has non-zero entries for each - * basic rate, equal to the basic rate: br[basicN] = basicN - * - * To look up the best basic rate corresponding to any - * particular rate, code can use the basic_rate table - * like this - * - * basic_rate = wlc->band->basic_rate[tx_rate] - * - * Make sure there is a best basic rate entry for - * every rate by walking up the table from low rates - * to high, filling in holes in the lookup table - */ - - for (i = 0; i < wlc->band->hw_rateset.count; i++) { - rate = wlc->band->hw_rateset.rates[i]; - - if (br[rate] != 0) { - /* This rate is a basic rate. - * Keep track of the best basic rate so far by - * modulation type. - */ - if (is_ofdm_rate(rate)) - ofdm_basic = rate; - else - cck_basic = rate; - - continue; - } - - /* This rate is not a basic rate so figure out the - * best basic rate less than this rate and fill in - * the hole in the table - */ - - br[rate] = is_ofdm_rate(rate) ? ofdm_basic : cck_basic; - - if (br[rate] != 0) - continue; - - if (is_ofdm_rate(rate)) { - /* - * In 11g and 11a, the OFDM mandatory rates - * are 6, 12, and 24 Mbps - */ - if (rate >= BRCM_RATE_24M) - mandatory = BRCM_RATE_24M; - else if (rate >= BRCM_RATE_12M) - mandatory = BRCM_RATE_12M; - else - mandatory = BRCM_RATE_6M; - } else { - /* In 11b, all CCK rates are mandatory 1 - 11 Mbps */ - mandatory = rate; - } - - br[rate] = mandatory; - } -} - -static void brcms_c_bandinit_ordered(struct brcms_c_info *wlc, - u16 chanspec) -{ - struct brcms_c_rateset default_rateset; - uint parkband; - uint i, band_order[2]; - - /* - * We might have been bandlocked during down and the chip - * power-cycled (hibernate). Figure out the right band to park on - */ - if (wlc->bandlocked || wlc->pub->_nbands == 1) { - /* updated in brcms_c_bandlock() */ - parkband = wlc->band->bandunit; - band_order[0] = band_order[1] = parkband; - } else { - /* park on the band of the specified chanspec */ - parkband = chspec_bandunit(chanspec); - - /* order so that parkband initialize last */ - band_order[0] = parkband ^ 1; - band_order[1] = parkband; - } - - /* make each band operational, software state init */ - for (i = 0; i < wlc->pub->_nbands; i++) { - uint j = band_order[i]; - - wlc->band = wlc->bandstate[j]; - - brcms_default_rateset(wlc, &default_rateset); - - /* fill in hw_rate */ - brcms_c_rateset_filter(&default_rateset, &wlc->band->hw_rateset, - false, BRCMS_RATES_CCK_OFDM, BRCMS_RATE_MASK, - (bool) (wlc->pub->_n_enab & SUPPORT_11N)); - - /* init basic rate lookup */ - brcms_c_rate_lookup_init(wlc, &default_rateset); - } - - /* sync up phy/radio chanspec */ - brcms_c_set_phy_chanspec(wlc, chanspec); -} - -/* - * Set or clear filtering related maccontrol bits based on - * specified filter flags - */ -void brcms_c_mac_promisc(struct brcms_c_info *wlc, uint filter_flags) -{ - u32 promisc_bits = 0; - - wlc->filter_flags = filter_flags; - - if (filter_flags & FIF_OTHER_BSS) - promisc_bits |= MCTL_PROMISC; - - if (filter_flags & FIF_BCN_PRBRESP_PROMISC) - promisc_bits |= MCTL_BCNS_PROMISC; - - if (filter_flags & FIF_FCSFAIL) - promisc_bits |= MCTL_KEEPBADFCS; - - if (filter_flags & (FIF_CONTROL | FIF_PSPOLL)) - promisc_bits |= MCTL_KEEPCONTROL; - - brcms_b_mctrl(wlc->hw, - MCTL_PROMISC | MCTL_BCNS_PROMISC | - MCTL_KEEPCONTROL | MCTL_KEEPBADFCS, - promisc_bits); -} - -/* - * ucode, hwmac update - * Channel dependent updates for ucode and hw - */ -static void brcms_c_ucode_mac_upd(struct brcms_c_info *wlc) -{ - /* enable or disable any active IBSSs depending on whether or not - * we are on the home channel - */ - if (wlc->home_chanspec == wlc_phy_chanspec_get(wlc->band->pi)) { - if (wlc->pub->associated) { - /* - * BMAC_NOTE: This is something that should be fixed - * in ucode inits. I think that the ucode inits set - * up the bcn templates and shm values with a bogus - * beacon. This should not be done in the inits. If - * ucode needs to set up a beacon for testing, the - * test routines should write it down, not expect the - * inits to populate a bogus beacon. - */ - if (BRCMS_PHY_11N_CAP(wlc->band)) - brcms_b_write_shm(wlc->hw, - M_BCN_TXTSF_OFFSET, 0); - } - } else { - /* disable an active IBSS if we are not on the home channel */ - } -} - -static void brcms_c_write_rate_shm(struct brcms_c_info *wlc, u8 rate, - u8 basic_rate) -{ - u8 phy_rate, index; - u8 basic_phy_rate, basic_index; - u16 dir_table, basic_table; - u16 basic_ptr; - - /* Shared memory address for the table we are reading */ - dir_table = is_ofdm_rate(basic_rate) ? M_RT_DIRMAP_A : M_RT_DIRMAP_B; - - /* Shared memory address for the table we are writing */ - basic_table = is_ofdm_rate(rate) ? M_RT_BBRSMAP_A : M_RT_BBRSMAP_B; - - /* - * for a given rate, the LS-nibble of the PLCP SIGNAL field is - * the index into the rate table. - */ - phy_rate = rate_info[rate] & BRCMS_RATE_MASK; - basic_phy_rate = rate_info[basic_rate] & BRCMS_RATE_MASK; - index = phy_rate & 0xf; - basic_index = basic_phy_rate & 0xf; - - /* Find the SHM pointer to the ACK rate entry by looking in the - * Direct-map Table - */ - basic_ptr = brcms_b_read_shm(wlc->hw, (dir_table + basic_index * 2)); - - /* Update the SHM BSS-basic-rate-set mapping table with the pointer - * to the correct basic rate for the given incoming rate - */ - brcms_b_write_shm(wlc->hw, (basic_table + index * 2), basic_ptr); -} - -static const struct brcms_c_rateset * -brcms_c_rateset_get_hwrs(struct brcms_c_info *wlc) -{ - const struct brcms_c_rateset *rs_dflt; - - if (BRCMS_PHY_11N_CAP(wlc->band)) { - if (wlc->band->bandtype == BRCM_BAND_5G) - rs_dflt = &ofdm_mimo_rates; - else - rs_dflt = &cck_ofdm_mimo_rates; - } else if (wlc->band->gmode) - rs_dflt = &cck_ofdm_rates; - else - rs_dflt = &cck_rates; - - return rs_dflt; -} - -static void brcms_c_set_ratetable(struct brcms_c_info *wlc) -{ - const struct brcms_c_rateset *rs_dflt; - struct brcms_c_rateset rs; - u8 rate, basic_rate; - uint i; - - rs_dflt = brcms_c_rateset_get_hwrs(wlc); - - brcms_c_rateset_copy(rs_dflt, &rs); - brcms_c_rateset_mcs_upd(&rs, wlc->stf->txstreams); - - /* walk the phy rate table and update SHM basic rate lookup table */ - for (i = 0; i < rs.count; i++) { - rate = rs.rates[i] & BRCMS_RATE_MASK; - - /* for a given rate brcms_basic_rate returns the rate at - * which a response ACK/CTS should be sent. - */ - basic_rate = brcms_basic_rate(wlc, rate); - if (basic_rate == 0) - /* This should only happen if we are using a - * restricted rateset. - */ - basic_rate = rs.rates[0] & BRCMS_RATE_MASK; - - brcms_c_write_rate_shm(wlc, rate, basic_rate); - } -} - -/* band-specific init */ -static void brcms_c_bsinit(struct brcms_c_info *wlc) -{ - brcms_dbg_info(wlc->hw->d11core, "wl%d: bandunit %d\n", - wlc->pub->unit, wlc->band->bandunit); - - /* write ucode ACK/CTS rate table */ - brcms_c_set_ratetable(wlc); - - /* update some band specific mac configuration */ - brcms_c_ucode_mac_upd(wlc); - - /* init antenna selection */ - brcms_c_antsel_init(wlc->asi); - -} - -/* formula: IDLE_BUSY_RATIO_X_16 = (100-duty_cycle)/duty_cycle*16 */ -static int -brcms_c_duty_cycle_set(struct brcms_c_info *wlc, int duty_cycle, bool isOFDM, - bool writeToShm) -{ - int idle_busy_ratio_x_16 = 0; - uint offset = - isOFDM ? M_TX_IDLE_BUSY_RATIO_X_16_OFDM : - M_TX_IDLE_BUSY_RATIO_X_16_CCK; - if (duty_cycle > 100 || duty_cycle < 0) { - brcms_err(wlc->hw->d11core, - "wl%d: duty cycle value off limit\n", - wlc->pub->unit); - return -EINVAL; - } - if (duty_cycle) - idle_busy_ratio_x_16 = (100 - duty_cycle) * 16 / duty_cycle; - /* Only write to shared memory when wl is up */ - if (writeToShm) - brcms_b_write_shm(wlc->hw, offset, (u16) idle_busy_ratio_x_16); - - if (isOFDM) - wlc->tx_duty_cycle_ofdm = (u16) duty_cycle; - else - wlc->tx_duty_cycle_cck = (u16) duty_cycle; - - return 0; -} - -/* push sw hps and wake state through hardware */ -static void brcms_c_set_ps_ctrl(struct brcms_c_info *wlc) -{ - u32 v1, v2; - bool hps; - bool awake_before; - - hps = brcms_c_ps_allowed(wlc); - - brcms_dbg_mac80211(wlc->hw->d11core, "wl%d: hps %d\n", wlc->pub->unit, - hps); - - v1 = bcma_read32(wlc->hw->d11core, D11REGOFFS(maccontrol)); - v2 = MCTL_WAKE; - if (hps) - v2 |= MCTL_HPS; - - brcms_b_mctrl(wlc->hw, MCTL_WAKE | MCTL_HPS, v2); - - awake_before = ((v1 & MCTL_WAKE) || ((v1 & MCTL_HPS) == 0)); - - if (!awake_before) - brcms_b_wait_for_wake(wlc->hw); -} - -/* - * Write this BSS config's MAC address to core. - * Updates RXE match engine. - */ -static int brcms_c_set_mac(struct brcms_bss_cfg *bsscfg) -{ - int err = 0; - struct brcms_c_info *wlc = bsscfg->wlc; - - /* enter the MAC addr into the RXE match registers */ - brcms_c_set_addrmatch(wlc, RCM_MAC_OFFSET, wlc->pub->cur_etheraddr); - - brcms_c_ampdu_macaddr_upd(wlc); - - return err; -} - -/* Write the BSS config's BSSID address to core (set_bssid in d11procs.tcl). - * Updates RXE match engine. - */ -static void brcms_c_set_bssid(struct brcms_bss_cfg *bsscfg) -{ - /* we need to update BSSID in RXE match registers */ - 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; - - if (wlc_hw->band->bandtype == BRCM_BAND_2G && wlc_hw->up) { - brcms_c_suspend_mac_and_wait(wlc_hw->wlc); - brcms_b_update_slot_timing(wlc_hw, shortslot); - brcms_c_enable_mac(wlc_hw->wlc); - } -} - -/* - * Suspend the the MAC and update the slot timing - * for standard 11b/g (20us slots) or shortslot 11g (9us slots). - */ -static void brcms_c_switch_shortslot(struct brcms_c_info *wlc, bool shortslot) -{ - /* use the override if it is set */ - if (wlc->shortslot_override != BRCMS_SHORTSLOT_AUTO) - shortslot = (wlc->shortslot_override == BRCMS_SHORTSLOT_ON); - - if (wlc->shortslot == shortslot) - return; - - wlc->shortslot = shortslot; - - brcms_b_set_shortslot(wlc->hw, shortslot); -} - -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->pub->associated) - wlc->bsscfg->current_bss->chanspec = chanspec; - } -} - -void -brcms_b_set_chanspec(struct brcms_hardware *wlc_hw, u16 chanspec, - bool mute_tx, struct txpwr_limits *txpwr) -{ - uint bandunit; - - brcms_dbg_mac80211(wlc_hw->d11core, "wl%d: 0x%x\n", wlc_hw->unit, - chanspec); - - wlc_hw->chanspec = chanspec; - - /* Switch bands if necessary */ - if (wlc_hw->_nbands > 1) { - bandunit = chspec_bandunit(chanspec); - if (wlc_hw->band->bandunit != bandunit) { - /* brcms_b_setband disables other bandunit, - * use light band switch if not up yet - */ - if (wlc_hw->up) { - wlc_phy_chanspec_radio_set(wlc_hw-> - bandstate[bandunit]-> - pi, chanspec); - brcms_b_setband(wlc_hw, bandunit, chanspec); - } else { - brcms_c_setxband(wlc_hw, bandunit); - } - } - } - - wlc_phy_initcal_enable(wlc_hw->band->pi, !mute_tx); - - if (!wlc_hw->up) { - if (wlc_hw->clk) - wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr, - chanspec); - wlc_phy_chanspec_radio_set(wlc_hw->band->pi, chanspec); - } else { - wlc_phy_chanspec_set(wlc_hw->band->pi, chanspec); - wlc_phy_txpower_limit_set(wlc_hw->band->pi, txpwr, chanspec); - - /* Update muting of the channel */ - brcms_b_mute(wlc_hw, mute_tx); - } -} - -/* switch to and initialize new band */ -static void brcms_c_setband(struct brcms_c_info *wlc, - uint bandunit) -{ - wlc->band = wlc->bandstate[bandunit]; - - if (!wlc->pub->up) - return; - - /* wait for at least one beacon before entering sleeping state */ - brcms_c_set_ps_ctrl(wlc); - - /* band-specific initializations */ - brcms_c_bsinit(wlc); -} - -static void brcms_c_set_chanspec(struct brcms_c_info *wlc, u16 chanspec) -{ - uint bandunit; - bool switchband = false; - u16 old_chanspec = wlc->chanspec; - - if (!brcms_c_valid_chanspec_db(wlc->cmi, chanspec)) { - brcms_err(wlc->hw->d11core, "wl%d: %s: Bad channel %d\n", - wlc->pub->unit, __func__, CHSPEC_CHANNEL(chanspec)); - return; - } - - /* Switch bands if necessary */ - if (wlc->pub->_nbands > 1) { - bandunit = chspec_bandunit(chanspec); - if (wlc->band->bandunit != bandunit || wlc->bandinit_pending) { - switchband = true; - if (wlc->bandlocked) { - brcms_err(wlc->hw->d11core, - "wl%d: %s: chspec %d band is locked!\n", - wlc->pub->unit, __func__, - CHSPEC_CHANNEL(chanspec)); - return; - } - /* - * should the setband call come after the - * brcms_b_chanspec() ? if the setband updates - * (brcms_c_bsinit) use low level calls to inspect and - * set state, the state inspected may be from the wrong - * band, or the following brcms_b_set_chanspec() may - * undo the work. - */ - brcms_c_setband(wlc, bandunit); - } - } - - /* sync up phy/radio chanspec */ - brcms_c_set_phy_chanspec(wlc, chanspec); - - /* init antenna selection */ - if (brcms_chspec_bw(old_chanspec) != brcms_chspec_bw(chanspec)) { - brcms_c_antsel_init(wlc->asi); - - /* Fix the hardware rateset based on bw. - * Mainly add MCS32 for 40Mhz, remove MCS 32 for 20Mhz - */ - brcms_c_rateset_bw_mcs_filter(&wlc->band->hw_rateset, - wlc->band->mimo_cap_40 ? brcms_chspec_bw(chanspec) : 0); - } - - /* update some mac configuration since chanspec changed */ - brcms_c_ucode_mac_upd(wlc); -} - -/* - * This function changes the phytxctl for beacon based on current - * beacon ratespec AND txant setting as per this table: - * ratespec CCK ant = wlc->stf->txant - * OFDM ant = 3 - */ -void brcms_c_beacon_phytxctl_txant_upd(struct brcms_c_info *wlc, - u32 bcn_rspec) -{ - u16 phyctl; - u16 phytxant = wlc->stf->phytxant; - u16 mask = PHY_TXC_ANT_MASK; - - /* for non-siso rates or default setting, use the available chains */ - if (BRCMS_PHY_11N_CAP(wlc->band)) - phytxant = brcms_c_stf_phytxchain_sel(wlc, bcn_rspec); - - phyctl = brcms_b_read_shm(wlc->hw, M_BCN_PCTLWD); - phyctl = (phyctl & ~mask) | phytxant; - brcms_b_write_shm(wlc->hw, M_BCN_PCTLWD, phyctl); -} - -/* - * centralized protection config change function to simplify debugging, no - * consistency checking this should be called only on changes to avoid overhead - * in periodic function - */ -void brcms_c_protection_upd(struct brcms_c_info *wlc, uint idx, int val) -{ - /* - * Cannot use brcms_dbg_* here because this function is called - * before wlc is sufficiently initialized. - */ - BCMMSG(wlc->wiphy, "idx %d, val %d\n", idx, val); - - switch (idx) { - case BRCMS_PROT_G_SPEC: - wlc->protection->_g = (bool) val; - break; - case BRCMS_PROT_G_OVR: - wlc->protection->g_override = (s8) val; - break; - case BRCMS_PROT_G_USER: - wlc->protection->gmode_user = (u8) val; - break; - case BRCMS_PROT_OVERLAP: - wlc->protection->overlap = (s8) val; - break; - case BRCMS_PROT_N_USER: - wlc->protection->nmode_user = (s8) val; - break; - case BRCMS_PROT_N_CFG: - wlc->protection->n_cfg = (s8) val; - break; - case BRCMS_PROT_N_CFG_OVR: - wlc->protection->n_cfg_override = (s8) val; - break; - case BRCMS_PROT_N_NONGF: - wlc->protection->nongf = (bool) val; - break; - case BRCMS_PROT_N_NONGF_OVR: - wlc->protection->nongf_override = (s8) val; - break; - case BRCMS_PROT_N_PAM_OVR: - wlc->protection->n_pam_override = (s8) val; - break; - case BRCMS_PROT_N_OBSS: - wlc->protection->n_obss = (bool) val; - break; - - default: - break; - } - -} - -static void brcms_c_ht_update_sgi_rx(struct brcms_c_info *wlc, int val) -{ - if (wlc->pub->up) { - brcms_c_update_beacon(wlc); - brcms_c_update_probe_resp(wlc, true); - } -} - -static void brcms_c_ht_update_ldpc(struct brcms_c_info *wlc, s8 val) -{ - wlc->stf->ldpc = val; - - if (wlc->pub->up) { - brcms_c_update_beacon(wlc); - brcms_c_update_probe_resp(wlc, true); - wlc_phy_ldpc_override_set(wlc->band->pi, (val ? true : false)); - } -} - -void brcms_c_wme_setparams(struct brcms_c_info *wlc, u16 aci, - const struct ieee80211_tx_queue_params *params, - bool suspend) -{ - int i; - struct shm_acparams acp_shm; - u16 *shm_entry; - - /* Only apply params if the core is out of reset and has clocks */ - if (!wlc->clk) { - brcms_err(wlc->hw->d11core, "wl%d: %s : no-clock\n", - wlc->pub->unit, __func__); - return; - } - - memset(&acp_shm, 0, sizeof(struct shm_acparams)); - /* fill in shm ac params struct */ - acp_shm.txop = params->txop; - /* convert from units of 32us to us for ucode */ - wlc->edcf_txop[aci & 0x3] = acp_shm.txop = - EDCF_TXOP2USEC(acp_shm.txop); - acp_shm.aifs = (params->aifs & EDCF_AIFSN_MASK); - - if (aci == IEEE80211_AC_VI && acp_shm.txop == 0 - && acp_shm.aifs < EDCF_AIFSN_MAX) - acp_shm.aifs++; - - if (acp_shm.aifs < EDCF_AIFSN_MIN - || acp_shm.aifs > EDCF_AIFSN_MAX) { - brcms_err(wlc->hw->d11core, "wl%d: edcf_setparams: bad " - "aifs %d\n", wlc->pub->unit, acp_shm.aifs); - } else { - acp_shm.cwmin = params->cw_min; - acp_shm.cwmax = params->cw_max; - acp_shm.cwcur = acp_shm.cwmin; - acp_shm.bslots = - bcma_read16(wlc->hw->d11core, D11REGOFFS(tsf_random)) & - acp_shm.cwcur; - acp_shm.reggap = acp_shm.bslots + acp_shm.aifs; - /* Indicate the new params to the ucode */ - acp_shm.status = brcms_b_read_shm(wlc->hw, (M_EDCF_QINFO + - wme_ac2fifo[aci] * - M_EDCF_QLEN + - M_EDCF_STATUS_OFF)); - acp_shm.status |= WME_STATUS_NEWAC; - - /* Fill in shm acparam table */ - shm_entry = (u16 *) &acp_shm; - for (i = 0; i < (int)sizeof(struct shm_acparams); i += 2) - brcms_b_write_shm(wlc->hw, - M_EDCF_QINFO + - wme_ac2fifo[aci] * M_EDCF_QLEN + i, - *shm_entry++); - } - - 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) -{ - u16 aci; - int i_ac; - struct ieee80211_tx_queue_params txq_pars; - static const struct edcf_acparam default_edcf_acparams[] = { - {EDCF_AC_BE_ACI_STA, EDCF_AC_BE_ECW_STA, EDCF_AC_BE_TXOP_STA}, - {EDCF_AC_BK_ACI_STA, EDCF_AC_BK_ECW_STA, EDCF_AC_BK_TXOP_STA}, - {EDCF_AC_VI_ACI_STA, EDCF_AC_VI_ECW_STA, EDCF_AC_VI_TXOP_STA}, - {EDCF_AC_VO_ACI_STA, EDCF_AC_VO_ECW_STA, EDCF_AC_VO_TXOP_STA} - }; /* ucode needs these parameters during its initialization */ - const struct edcf_acparam *edcf_acp = &default_edcf_acparams[0]; - - for (i_ac = 0; i_ac < IEEE80211_NUM_ACS; i_ac++, edcf_acp++) { - /* find out which ac this set of params applies to */ - aci = (edcf_acp->ACI & EDCF_ACI_MASK) >> EDCF_ACI_SHIFT; - - /* fill in shm ac params struct */ - txq_pars.txop = edcf_acp->TXOP; - txq_pars.aifs = edcf_acp->ACI; - - /* CWmin = 2^(ECWmin) - 1 */ - txq_pars.cw_min = EDCF_ECW2CW(edcf_acp->ECW & EDCF_ECWMIN_MASK); - /* CWmax = 2^(ECWmax) - 1 */ - txq_pars.cw_max = EDCF_ECW2CW((edcf_acp->ECW & EDCF_ECWMAX_MASK) - >> EDCF_ECWMAX_SHIFT); - brcms_c_wme_setparams(wlc, aci, &txq_pars, suspend); - } - - if (suspend) { - brcms_c_suspend_mac_and_wait(wlc); - brcms_c_enable_mac(wlc); - } -} - -static void brcms_c_radio_monitor_start(struct brcms_c_info *wlc) -{ - /* Don't start the timer if HWRADIO feature is disabled */ - if (wlc->radio_monitor) - return; - - wlc->radio_monitor = true; - brcms_b_pllreq(wlc->hw, true, BRCMS_PLLREQ_RADIO_MON); - brcms_add_timer(wlc->radio_timer, TIMER_INTERVAL_RADIOCHK, true); -} - -static bool brcms_c_radio_monitor_stop(struct brcms_c_info *wlc) -{ - if (!wlc->radio_monitor) - return true; - - wlc->radio_monitor = false; - brcms_b_pllreq(wlc->hw, false, BRCMS_PLLREQ_RADIO_MON); - return brcms_del_timer(wlc->radio_timer); -} - -/* read hwdisable state and propagate to wlc flag */ -static void brcms_c_radio_hwdisable_upd(struct brcms_c_info *wlc) -{ - if (wlc->pub->hw_off) - return; - - if (brcms_b_radio_read_hwdisabled(wlc->hw)) - mboolset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE); - else - mboolclr(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE); -} - -/* update hwradio status and return it */ -bool brcms_c_check_radio_disabled(struct brcms_c_info *wlc) -{ - brcms_c_radio_hwdisable_upd(wlc); - - return mboolisset(wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE) ? - true : false; -} - -/* periodical query hw radio button while driver is "down" */ -static void brcms_c_radio_timer(void *arg) -{ - struct brcms_c_info *wlc = (struct brcms_c_info *) arg; - - if (brcms_deviceremoved(wlc)) { - brcms_err(wlc->hw->d11core, "wl%d: %s: dead chip\n", - wlc->pub->unit, __func__); - brcms_down(wlc->wl); - return; - } - - brcms_c_radio_hwdisable_upd(wlc); -} - -/* common low-level watchdog code */ -static void brcms_b_watchdog(struct brcms_c_info *wlc) -{ - struct brcms_hardware *wlc_hw = wlc->hw; - - if (!wlc_hw->up) - return; - - /* increment second count */ - wlc_hw->now++; - - /* Check for FIFO error interrupts */ - brcms_b_fifoerrors(wlc_hw); - - /* make sure RX dma has buffers */ - dma_rxfill(wlc->hw->di[RX_FIFO]); - - wlc_phy_watchdog(wlc_hw->band->pi); -} - -/* common watchdog code */ -static void brcms_c_watchdog(struct brcms_c_info *wlc) -{ - brcms_dbg_info(wlc->hw->d11core, "wl%d\n", wlc->pub->unit); - - if (!wlc->pub->up) - return; - - if (brcms_deviceremoved(wlc)) { - brcms_err(wlc->hw->d11core, "wl%d: %s: dead chip\n", - wlc->pub->unit, __func__); - brcms_down(wlc->wl); - return; - } - - /* increment second count */ - wlc->pub->now++; - - brcms_c_radio_hwdisable_upd(wlc); - /* if radio is disable, driver may be down, quit here */ - if (wlc->pub->radio_disabled) - return; - - brcms_b_watchdog(wlc); - - /* - * occasionally sample mac stat counters to - * detect 16-bit counter wrap - */ - if ((wlc->pub->now % SW_TIMER_MAC_STAT_UPD) == 0) - brcms_c_statsupd(wlc); - - if (BRCMS_ISNPHY(wlc->band) && - ((wlc->pub->now - wlc->tempsense_lasttime) >= - BRCMS_TEMPSENSE_PERIOD)) { - wlc->tempsense_lasttime = wlc->pub->now; - brcms_c_tempsense_upd(wlc); - } -} - -static void brcms_c_watchdog_by_timer(void *arg) -{ - struct brcms_c_info *wlc = (struct brcms_c_info *) arg; - - brcms_c_watchdog(wlc); -} - -static bool brcms_c_timers_init(struct brcms_c_info *wlc, int unit) -{ - wlc->wdtimer = brcms_init_timer(wlc->wl, brcms_c_watchdog_by_timer, - wlc, "watchdog"); - if (!wlc->wdtimer) { - wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for wdtimer " - "failed\n", unit); - goto fail; - } - - wlc->radio_timer = brcms_init_timer(wlc->wl, brcms_c_radio_timer, - wlc, "radio"); - if (!wlc->radio_timer) { - wiphy_err(wlc->wiphy, "wl%d: wl_init_timer for radio_timer " - "failed\n", unit); - goto fail; - } - - return true; - - fail: - return false; -} - -/* - * Initialize brcms_c_info default values ... - * may get overrides later in this function - */ -static void brcms_c_info_init(struct brcms_c_info *wlc, int unit) -{ - int i; - - /* Save our copy of the chanspec */ - wlc->chanspec = ch20mhz_chspec(1); - - /* various 802.11g modes */ - wlc->shortslot = false; - wlc->shortslot_override = BRCMS_SHORTSLOT_AUTO; - - brcms_c_protection_upd(wlc, BRCMS_PROT_G_OVR, BRCMS_PROTECTION_AUTO); - brcms_c_protection_upd(wlc, BRCMS_PROT_G_SPEC, false); - - brcms_c_protection_upd(wlc, BRCMS_PROT_N_CFG_OVR, - BRCMS_PROTECTION_AUTO); - brcms_c_protection_upd(wlc, BRCMS_PROT_N_CFG, BRCMS_N_PROTECTION_OFF); - brcms_c_protection_upd(wlc, BRCMS_PROT_N_NONGF_OVR, - BRCMS_PROTECTION_AUTO); - brcms_c_protection_upd(wlc, BRCMS_PROT_N_NONGF, false); - brcms_c_protection_upd(wlc, BRCMS_PROT_N_PAM_OVR, AUTO); - - brcms_c_protection_upd(wlc, BRCMS_PROT_OVERLAP, - BRCMS_PROTECTION_CTL_OVERLAP); - - /* 802.11g draft 4.0 NonERP elt advertisement */ - wlc->include_legacy_erp = true; - - wlc->stf->ant_rx_ovr = ANT_RX_DIV_DEF; - wlc->stf->txant = ANT_TX_DEF; - - wlc->prb_resp_timeout = BRCMS_PRB_RESP_TIMEOUT; - - wlc->usr_fragthresh = DOT11_DEFAULT_FRAG_LEN; - for (i = 0; i < NFIFO; i++) - wlc->fragthresh[i] = DOT11_DEFAULT_FRAG_LEN; - wlc->RTSThresh = DOT11_DEFAULT_RTS_LEN; - - /* default rate fallback retry limits */ - wlc->SFBL = RETRY_SHORT_FB; - wlc->LFBL = RETRY_LONG_FB; - - /* default mac retry limits */ - wlc->SRL = RETRY_SHORT_DEF; - wlc->LRL = RETRY_LONG_DEF; - - /* WME QoS mode is Auto by default */ - wlc->pub->_ampdu = AMPDU_AGG_HOST; -} - -static uint brcms_c_attach_module(struct brcms_c_info *wlc) -{ - uint err = 0; - uint unit; - unit = wlc->pub->unit; - - wlc->asi = brcms_c_antsel_attach(wlc); - if (wlc->asi == NULL) { - wiphy_err(wlc->wiphy, "wl%d: attach: antsel_attach " - "failed\n", unit); - err = 44; - goto fail; - } - - wlc->ampdu = brcms_c_ampdu_attach(wlc); - if (wlc->ampdu == NULL) { - wiphy_err(wlc->wiphy, "wl%d: attach: ampdu_attach " - "failed\n", unit); - err = 50; - goto fail; - } - - if ((brcms_c_stf_attach(wlc) != 0)) { - wiphy_err(wlc->wiphy, "wl%d: attach: stf_attach " - "failed\n", unit); - err = 68; - goto fail; - } - fail: - return err; -} - -struct brcms_pub *brcms_c_pub(struct brcms_c_info *wlc) -{ - return wlc->pub; -} - -/* low level attach - * run backplane attach, init nvram - * run phy attach - * initialize software state for each core and band - * put the whole chip in reset(driver down state), no clock - */ -static int brcms_b_attach(struct brcms_c_info *wlc, struct bcma_device *core, - uint unit, bool piomode) -{ - struct brcms_hardware *wlc_hw; - uint err = 0; - uint j; - bool wme = false; - struct shared_phy_params sha_params; - struct wiphy *wiphy = wlc->wiphy; - struct pci_dev *pcidev = core->bus->host_pci; - struct ssb_sprom *sprom = &core->bus->sprom; - - if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) - brcms_dbg_info(core, "wl%d: vendor 0x%x device 0x%x\n", unit, - pcidev->vendor, - pcidev->device); - else - brcms_dbg_info(core, "wl%d: vendor 0x%x device 0x%x\n", unit, - core->bus->boardinfo.vendor, - core->bus->boardinfo.type); - - wme = true; - - wlc_hw = wlc->hw; - wlc_hw->wlc = wlc; - wlc_hw->unit = unit; - wlc_hw->band = wlc_hw->bandstate[0]; - wlc_hw->_piomode = piomode; - - /* populate struct brcms_hardware with default values */ - brcms_b_info_init(wlc_hw); - - /* - * Do the hardware portion of the attach. Also initialize software - * state that depends on the particular hardware we are running. - */ - wlc_hw->sih = ai_attach(core->bus); - if (wlc_hw->sih == NULL) { - wiphy_err(wiphy, "wl%d: brcms_b_attach: si_attach failed\n", - unit); - err = 11; - goto fail; - } - - /* verify again the device is supported */ - if (!brcms_c_chipmatch(core)) { - wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported device\n", - unit); - err = 12; - goto fail; - } - - if (core->bus->hosttype == BCMA_HOSTTYPE_PCI) { - wlc_hw->vendorid = pcidev->vendor; - wlc_hw->deviceid = pcidev->device; - } else { - wlc_hw->vendorid = core->bus->boardinfo.vendor; - wlc_hw->deviceid = core->bus->boardinfo.type; - } - - wlc_hw->d11core = core; - wlc_hw->corerev = core->id.rev; - - /* validate chip, chiprev and corerev */ - if (!brcms_c_isgoodchip(wlc_hw)) { - err = 13; - goto fail; - } - - /* initialize power control registers */ - ai_clkctl_init(wlc_hw->sih); - - /* request fastclock and force fastclock for the rest of attach - * bring the d11 core out of reset. - * For PMU chips, the first wlc_clkctl_clk is no-op since core-clk - * is still false; But it will be called again inside wlc_corereset, - * after d11 is out of reset. - */ - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS); - - if (!brcms_b_validate_chip_access(wlc_hw)) { - wiphy_err(wiphy, "wl%d: brcms_b_attach: validate_chip_access " - "failed\n", unit); - err = 14; - goto fail; - } - - /* get the board rev, used just below */ - j = sprom->board_rev; - /* promote srom boardrev of 0xFF to 1 */ - if (j == BOARDREV_PROMOTABLE) - j = BOARDREV_PROMOTED; - wlc_hw->boardrev = (u16) j; - if (!brcms_c_validboardtype(wlc_hw)) { - wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported Broadcom " - "board type (0x%x)" " or revision level (0x%x)\n", - unit, ai_get_boardtype(wlc_hw->sih), - wlc_hw->boardrev); - err = 15; - goto fail; - } - wlc_hw->sromrev = sprom->revision; - wlc_hw->boardflags = sprom->boardflags_lo + (sprom->boardflags_hi << 16); - wlc_hw->boardflags2 = sprom->boardflags2_lo + (sprom->boardflags2_hi << 16); - - if (wlc_hw->boardflags & BFL_NOPLLDOWN) - brcms_b_pllreq(wlc_hw, true, BRCMS_PLLREQ_SHARED); - - /* check device id(srom, nvram etc.) to set bands */ - if (wlc_hw->deviceid == BCM43224_D11N_ID || - wlc_hw->deviceid == BCM43224_D11N_ID_VEN1 || - wlc_hw->deviceid == BCM43224_CHIP_ID) - /* Dualband boards */ - wlc_hw->_nbands = 2; - else - wlc_hw->_nbands = 1; - - if ((ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM43225)) - wlc_hw->_nbands = 1; - - /* BMAC_NOTE: remove init of pub values when brcms_c_attach() - * unconditionally does the init of these values - */ - wlc->vendorid = wlc_hw->vendorid; - wlc->deviceid = wlc_hw->deviceid; - wlc->pub->sih = wlc_hw->sih; - wlc->pub->corerev = wlc_hw->corerev; - wlc->pub->sromrev = wlc_hw->sromrev; - wlc->pub->boardrev = wlc_hw->boardrev; - wlc->pub->boardflags = wlc_hw->boardflags; - wlc->pub->boardflags2 = wlc_hw->boardflags2; - wlc->pub->_nbands = wlc_hw->_nbands; - - wlc_hw->physhim = wlc_phy_shim_attach(wlc_hw, wlc->wl, wlc); - - if (wlc_hw->physhim == NULL) { - wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_shim_attach " - "failed\n", unit); - err = 25; - goto fail; - } - - /* pass all the parameters to wlc_phy_shared_attach in one struct */ - sha_params.sih = wlc_hw->sih; - sha_params.physhim = wlc_hw->physhim; - sha_params.unit = unit; - sha_params.corerev = wlc_hw->corerev; - sha_params.vid = wlc_hw->vendorid; - sha_params.did = wlc_hw->deviceid; - sha_params.chip = ai_get_chip_id(wlc_hw->sih); - sha_params.chiprev = ai_get_chiprev(wlc_hw->sih); - sha_params.chippkg = ai_get_chippkg(wlc_hw->sih); - sha_params.sromrev = wlc_hw->sromrev; - sha_params.boardtype = ai_get_boardtype(wlc_hw->sih); - sha_params.boardrev = wlc_hw->boardrev; - sha_params.boardflags = wlc_hw->boardflags; - sha_params.boardflags2 = wlc_hw->boardflags2; - - /* alloc and save pointer to shared phy state area */ - wlc_hw->phy_sh = wlc_phy_shared_attach(&sha_params); - if (!wlc_hw->phy_sh) { - err = 16; - goto fail; - } - - /* initialize software state for each core and band */ - for (j = 0; j < wlc_hw->_nbands; j++) { - /* - * band0 is always 2.4Ghz - * band1, if present, is 5Ghz - */ - - brcms_c_setxband(wlc_hw, j); - - wlc_hw->band->bandunit = j; - wlc_hw->band->bandtype = j ? BRCM_BAND_5G : BRCM_BAND_2G; - wlc->band->bandunit = j; - wlc->band->bandtype = j ? BRCM_BAND_5G : BRCM_BAND_2G; - wlc->core->coreidx = core->core_index; - - wlc_hw->machwcap = bcma_read32(core, D11REGOFFS(machwcap)); - wlc_hw->machwcap_backup = wlc_hw->machwcap; - - /* init tx fifo size */ - WARN_ON(wlc_hw->corerev < XMTFIFOTBL_STARTREV || - (wlc_hw->corerev - XMTFIFOTBL_STARTREV) > - ARRAY_SIZE(xmtfifo_sz)); - wlc_hw->xmtfifo_sz = - xmtfifo_sz[(wlc_hw->corerev - XMTFIFOTBL_STARTREV)]; - WARN_ON(!wlc_hw->xmtfifo_sz[0]); - - /* Get a phy for this band */ - wlc_hw->band->pi = - wlc_phy_attach(wlc_hw->phy_sh, core, - wlc_hw->band->bandtype, - wlc->wiphy); - if (wlc_hw->band->pi == NULL) { - wiphy_err(wiphy, "wl%d: brcms_b_attach: wlc_phy_" - "attach failed\n", unit); - err = 17; - goto fail; - } - - wlc_phy_machwcap_set(wlc_hw->band->pi, wlc_hw->machwcap); - - wlc_phy_get_phyversion(wlc_hw->band->pi, &wlc_hw->band->phytype, - &wlc_hw->band->phyrev, - &wlc_hw->band->radioid, - &wlc_hw->band->radiorev); - wlc_hw->band->abgphy_encore = - wlc_phy_get_encore(wlc_hw->band->pi); - wlc->band->abgphy_encore = wlc_phy_get_encore(wlc_hw->band->pi); - wlc_hw->band->core_flags = - wlc_phy_get_coreflags(wlc_hw->band->pi); - - /* verify good phy_type & supported phy revision */ - if (BRCMS_ISNPHY(wlc_hw->band)) { - if (NCONF_HAS(wlc_hw->band->phyrev)) - goto good_phy; - else - goto bad_phy; - } else if (BRCMS_ISLCNPHY(wlc_hw->band)) { - if (LCNCONF_HAS(wlc_hw->band->phyrev)) - goto good_phy; - else - goto bad_phy; - } else { - bad_phy: - wiphy_err(wiphy, "wl%d: brcms_b_attach: unsupported " - "phy type/rev (%d/%d)\n", unit, - wlc_hw->band->phytype, wlc_hw->band->phyrev); - err = 18; - goto fail; - } - - good_phy: - /* - * BMAC_NOTE: wlc->band->pi should not be set below and should - * be done in the high level attach. However we can not make - * that change until all low level access is changed to - * wlc_hw->band->pi. Instead do the wlc->band->pi init below, - * keeping wlc_hw->band->pi as well for incremental update of - * low level fns, and cut over low only init when all fns - * updated. - */ - wlc->band->pi = wlc_hw->band->pi; - wlc->band->phytype = wlc_hw->band->phytype; - wlc->band->phyrev = wlc_hw->band->phyrev; - wlc->band->radioid = wlc_hw->band->radioid; - wlc->band->radiorev = wlc_hw->band->radiorev; - brcms_dbg_info(core, "wl%d: phy %u/%u radio %x/%u\n", unit, - wlc->band->phytype, wlc->band->phyrev, - wlc->band->radioid, wlc->band->radiorev); - /* default contention windows size limits */ - wlc_hw->band->CWmin = APHY_CWMIN; - wlc_hw->band->CWmax = PHY_CWMAX; - - if (!brcms_b_attach_dmapio(wlc, j, wme)) { - err = 19; - goto fail; - } - } - - /* disable core to match driver "down" state */ - brcms_c_coredisable(wlc_hw); - - /* Match driver "down" state */ - bcma_host_pci_down(wlc_hw->d11core->bus); - - /* turn off pll and xtal to match driver "down" state */ - brcms_b_xtal(wlc_hw, OFF); - - /* ******************************************************************* - * The hardware is in the DOWN state at this point. D11 core - * or cores are in reset with clocks off, and the board PLLs - * are off if possible. - * - * Beyond this point, wlc->sbclk == false and chip registers - * should not be touched. - ********************************************************************* - */ - - /* init etheraddr state variables */ - brcms_c_get_macaddr(wlc_hw, wlc_hw->etheraddr); - - if (is_broadcast_ether_addr(wlc_hw->etheraddr) || - is_zero_ether_addr(wlc_hw->etheraddr)) { - wiphy_err(wiphy, "wl%d: brcms_b_attach: bad macaddr\n", - unit); - err = 22; - goto fail; - } - - brcms_dbg_info(wlc_hw->d11core, "deviceid 0x%x nbands %d board 0x%x\n", - wlc_hw->deviceid, wlc_hw->_nbands, - ai_get_boardtype(wlc_hw->sih)); - - return err; - - fail: - wiphy_err(wiphy, "wl%d: brcms_b_attach: failed with err %d\n", unit, - err); - return err; -} - -static bool brcms_c_attach_stf_ant_init(struct brcms_c_info *wlc) -{ - int aa; - uint unit; - int bandtype; - struct ssb_sprom *sprom = &wlc->hw->d11core->bus->sprom; - - unit = wlc->pub->unit; - bandtype = wlc->band->bandtype; - - /* get antennas available */ - if (bandtype == BRCM_BAND_5G) - aa = sprom->ant_available_a; - else - aa = sprom->ant_available_bg; - - if ((aa < 1) || (aa > 15)) { - wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in" - " srom (0x%x), using 3\n", unit, __func__, aa); - aa = 3; - } - - /* reset the defaults if we have a single antenna */ - if (aa == 1) { - wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_0; - wlc->stf->txant = ANT_TX_FORCE_0; - } else if (aa == 2) { - wlc->stf->ant_rx_ovr = ANT_RX_DIV_FORCE_1; - wlc->stf->txant = ANT_TX_FORCE_1; - } else { - } - - /* Compute Antenna Gain */ - if (bandtype == BRCM_BAND_5G) - wlc->band->antgain = sprom->antenna_gain.a1; - else - wlc->band->antgain = sprom->antenna_gain.a0; - - return true; -} - -static void brcms_c_bss_default_init(struct brcms_c_info *wlc) -{ - u16 chanspec; - struct brcms_band *band; - struct brcms_bss_info *bi = wlc->default_bss; - - /* init default and target BSS with some sane initial values */ - memset(bi, 0, sizeof(*bi)); - bi->beacon_period = BEACON_INTERVAL_DEFAULT; - - /* fill the default channel as the first valid channel - * starting from the 2G channels - */ - chanspec = ch20mhz_chspec(1); - wlc->home_chanspec = bi->chanspec = chanspec; - - /* find the band of our default channel */ - band = wlc->band; - if (wlc->pub->_nbands > 1 && - band->bandunit != chspec_bandunit(chanspec)) - band = wlc->bandstate[OTHERBANDUNIT(wlc)]; - - /* init bss rates to the band specific default rate set */ - brcms_c_rateset_default(&bi->rateset, NULL, band->phytype, - band->bandtype, false, BRCMS_RATE_MASK_FULL, - (bool) (wlc->pub->_n_enab & SUPPORT_11N), - brcms_chspec_bw(chanspec), wlc->stf->txstreams); - - if (wlc->pub->_n_enab & SUPPORT_11N) - bi->flags |= BRCMS_BSS_HT; -} - -static void brcms_c_update_mimo_band_bwcap(struct brcms_c_info *wlc, u8 bwcap) -{ - uint i; - struct brcms_band *band; - - for (i = 0; i < wlc->pub->_nbands; i++) { - band = wlc->bandstate[i]; - if (band->bandtype == BRCM_BAND_5G) { - if ((bwcap == BRCMS_N_BW_40ALL) - || (bwcap == BRCMS_N_BW_20IN2G_40IN5G)) - band->mimo_cap_40 = true; - else - band->mimo_cap_40 = false; - } else { - if (bwcap == BRCMS_N_BW_40ALL) - band->mimo_cap_40 = true; - else - band->mimo_cap_40 = false; - } - } -} - -static void brcms_c_timers_deinit(struct brcms_c_info *wlc) -{ - /* free timer state */ - if (wlc->wdtimer) { - brcms_free_timer(wlc->wdtimer); - wlc->wdtimer = NULL; - } - if (wlc->radio_timer) { - brcms_free_timer(wlc->radio_timer); - wlc->radio_timer = NULL; - } -} - -static void brcms_c_detach_module(struct brcms_c_info *wlc) -{ - if (wlc->asi) { - brcms_c_antsel_detach(wlc->asi); - wlc->asi = NULL; - } - - if (wlc->ampdu) { - brcms_c_ampdu_detach(wlc->ampdu); - wlc->ampdu = NULL; - } - - brcms_c_stf_detach(wlc); -} - -/* - * low level detach - */ -static void brcms_b_detach(struct brcms_c_info *wlc) -{ - uint i; - struct brcms_hw_band *band; - struct brcms_hardware *wlc_hw = wlc->hw; - - brcms_b_detach_dmapio(wlc_hw); - - band = wlc_hw->band; - for (i = 0; i < wlc_hw->_nbands; i++) { - if (band->pi) { - /* Detach this band's phy */ - wlc_phy_detach(band->pi); - band->pi = NULL; - } - band = wlc_hw->bandstate[OTHERBANDUNIT(wlc)]; - } - - /* Free shared phy state */ - kfree(wlc_hw->phy_sh); - - wlc_phy_shim_detach(wlc_hw->physhim); - - if (wlc_hw->sih) { - ai_detach(wlc_hw->sih); - wlc_hw->sih = NULL; - } -} - -/* - * Return a count of the number of driver callbacks still pending. - * - * General policy is that brcms_c_detach can only dealloc/free software states. - * It can NOT touch hardware registers since the d11core may be in reset and - * clock may not be available. - * One exception is sb register access, which is possible if crystal is turned - * on after "down" state, driver should avoid software timer with the exception - * of radio_monitor. - */ -uint brcms_c_detach(struct brcms_c_info *wlc) -{ - uint callbacks; - - if (wlc == NULL) - return 0; - - brcms_b_detach(wlc); - - /* delete software timers */ - callbacks = 0; - if (!brcms_c_radio_monitor_stop(wlc)) - callbacks++; - - brcms_c_channel_mgr_detach(wlc->cmi); - - brcms_c_timers_deinit(wlc); - - brcms_c_detach_module(wlc); - - brcms_c_detach_mfree(wlc); - return callbacks; -} - -/* update state that depends on the current value of "ap" */ -static void brcms_c_ap_upd(struct brcms_c_info *wlc) -{ - /* STA-BSS; short capable */ - wlc->PLCPHdr_override = BRCMS_PLCP_SHORT; -} - -/* Initialize just the hardware when coming out of POR or S3/S5 system states */ -static void brcms_b_hw_up(struct brcms_hardware *wlc_hw) -{ - if (wlc_hw->wlc->pub->hw_up) - return; - - brcms_dbg_info(wlc_hw->d11core, "wl%d\n", wlc_hw->unit); - - /* - * Enable pll and xtal, initialize the power control registers, - * and force fastclock for the remainder of brcms_c_up(). - */ - brcms_b_xtal(wlc_hw, ON); - ai_clkctl_init(wlc_hw->sih); - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - - /* - * TODO: test suspend/resume - * - * AI chip doesn't restore bar0win2 on - * hibernation/resume, need sw fixup - */ - - /* - * Inform phy that a POR reset has occurred so - * it does a complete phy init - */ - wlc_phy_por_inform(wlc_hw->band->pi); - - wlc_hw->ucode_loaded = false; - wlc_hw->wlc->pub->hw_up = true; - - if ((wlc_hw->boardflags & BFL_FEM) - && (ai_get_chip_id(wlc_hw->sih) == BCMA_CHIP_ID_BCM4313)) { - if (! - (wlc_hw->boardrev >= 0x1250 - && (wlc_hw->boardflags & BFL_FEM_BT))) - ai_epa_4313war(wlc_hw->sih); - } -} - -static int brcms_b_up_prep(struct brcms_hardware *wlc_hw) -{ - brcms_dbg_info(wlc_hw->d11core, "wl%d\n", wlc_hw->unit); - - /* - * Enable pll and xtal, initialize the power control registers, - * and force fastclock for the remainder of brcms_c_up(). - */ - brcms_b_xtal(wlc_hw, ON); - ai_clkctl_init(wlc_hw->sih); - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - - /* - * Configure pci/pcmcia here instead of in brcms_c_attach() - * to allow mfg hotswap: down, hotswap (chip power cycle), up. - */ - bcma_host_pci_irq_ctl(wlc_hw->d11core->bus, wlc_hw->d11core, - true); - - /* - * Need to read the hwradio status here to cover the case where the - * system is loaded with the hw radio disabled. We do not want to - * bring the driver up in this case. - */ - if (brcms_b_radio_read_hwdisabled(wlc_hw)) { - /* put SB PCI in down state again */ - bcma_host_pci_down(wlc_hw->d11core->bus); - brcms_b_xtal(wlc_hw, OFF); - return -ENOMEDIUM; - } - - bcma_host_pci_up(wlc_hw->d11core->bus); - - /* reset the d11 core */ - brcms_b_corereset(wlc_hw, BRCMS_USE_COREFLAGS); - - return 0; -} - -static int brcms_b_up_finish(struct brcms_hardware *wlc_hw) -{ - wlc_hw->up = true; - wlc_phy_hw_state_upd(wlc_hw->band->pi, true); - - /* FULLY enable dynamic power control and d11 core interrupt */ - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_DYNAMIC); - brcms_intrson(wlc_hw->wlc->wl); - return 0; -} - -/* - * Write WME tunable parameters for retransmit/max rate - * from wlc struct to ucode - */ -static void brcms_c_wme_retries_write(struct brcms_c_info *wlc) -{ - int ac; - - /* Need clock to do this */ - if (!wlc->clk) - return; - - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) - brcms_b_write_shm(wlc->hw, M_AC_TXLMT_ADDR(ac), - wlc->wme_retries[ac]); -} - -/* make interface operational */ -int brcms_c_up(struct brcms_c_info *wlc) -{ - struct ieee80211_channel *ch; - - brcms_dbg_info(wlc->hw->d11core, "wl%d\n", wlc->pub->unit); - - /* HW is turned off so don't try to access it */ - if (wlc->pub->hw_off || brcms_deviceremoved(wlc)) - return -ENOMEDIUM; - - if (!wlc->pub->hw_up) { - brcms_b_hw_up(wlc->hw); - wlc->pub->hw_up = true; - } - - if ((wlc->pub->boardflags & BFL_FEM) - && (ai_get_chip_id(wlc->hw->sih) == BCMA_CHIP_ID_BCM4313)) { - if (wlc->pub->boardrev >= 0x1250 - && (wlc->pub->boardflags & BFL_FEM_BT)) - brcms_b_mhf(wlc->hw, MHF5, MHF5_4313_GPIOCTRL, - MHF5_4313_GPIOCTRL, BRCM_BAND_ALL); - else - brcms_b_mhf(wlc->hw, MHF4, MHF4_EXTPA_ENABLE, - MHF4_EXTPA_ENABLE, BRCM_BAND_ALL); - } - - /* - * Need to read the hwradio status here to cover the case where the - * system is loaded with the hw radio disabled. We do not want to bring - * the driver up in this case. If radio is disabled, abort up, lower - * power, start radio timer and return 0(for NDIS) don't call - * radio_update to avoid looping brcms_c_up. - * - * brcms_b_up_prep() returns either 0 or -BCME_RADIOOFF only - */ - if (!wlc->pub->radio_disabled) { - int status = brcms_b_up_prep(wlc->hw); - if (status == -ENOMEDIUM) { - if (!mboolisset - (wlc->pub->radio_disabled, WL_RADIO_HW_DISABLE)) { - struct brcms_bss_cfg *bsscfg = wlc->bsscfg; - mboolset(wlc->pub->radio_disabled, - WL_RADIO_HW_DISABLE); - if (bsscfg->type == BRCMS_TYPE_STATION || - bsscfg->type == BRCMS_TYPE_ADHOC) - brcms_err(wlc->hw->d11core, - "wl%d: up: rfdisable -> " - "bsscfg_disable()\n", - wlc->pub->unit); - } - } - } - - if (wlc->pub->radio_disabled) { - brcms_c_radio_monitor_start(wlc); - return 0; - } - - /* brcms_b_up_prep has done brcms_c_corereset(). so clk is on, set it */ - wlc->clk = true; - - brcms_c_radio_monitor_stop(wlc); - - /* Set EDCF hostflags */ - brcms_b_mhf(wlc->hw, MHF1, MHF1_EDCF, MHF1_EDCF, BRCM_BAND_ALL); - - brcms_init(wlc->wl); - wlc->pub->up = true; - - if (wlc->bandinit_pending) { - ch = wlc->pub->ieee_hw->conf.chandef.chan; - brcms_c_suspend_mac_and_wait(wlc); - brcms_c_set_chanspec(wlc, ch20mhz_chspec(ch->hw_value)); - wlc->bandinit_pending = false; - brcms_c_enable_mac(wlc); - } - - brcms_b_up_finish(wlc->hw); - - /* Program the TX wme params with the current settings */ - brcms_c_wme_retries_write(wlc); - - /* start one second watchdog timer */ - brcms_add_timer(wlc->wdtimer, TIMER_INTERVAL_WATCHDOG, true); - wlc->WDarmed = true; - - /* ensure antenna config is up to date */ - brcms_c_stf_phy_txant_upd(wlc); - /* ensure LDPC config is in sync */ - brcms_c_ht_update_ldpc(wlc, wlc->stf->ldpc); - - return 0; -} - -static uint brcms_c_down_del_timer(struct brcms_c_info *wlc) -{ - uint callbacks = 0; - - return callbacks; -} - -static int brcms_b_bmac_down_prep(struct brcms_hardware *wlc_hw) -{ - bool dev_gone; - uint callbacks = 0; - - if (!wlc_hw->up) - return callbacks; - - dev_gone = brcms_deviceremoved(wlc_hw->wlc); - - /* disable interrupts */ - if (dev_gone) - wlc_hw->wlc->macintmask = 0; - else { - /* now disable interrupts */ - brcms_intrsoff(wlc_hw->wlc->wl); - - /* ensure we're running on the pll clock again */ - brcms_b_clkctl_clk(wlc_hw, BCMA_CLKMODE_FAST); - } - /* down phy at the last of this stage */ - callbacks += wlc_phy_down(wlc_hw->band->pi); - - return callbacks; -} - -static int brcms_b_down_finish(struct brcms_hardware *wlc_hw) -{ - uint callbacks = 0; - bool dev_gone; - - if (!wlc_hw->up) - return callbacks; - - wlc_hw->up = false; - wlc_phy_hw_state_upd(wlc_hw->band->pi, false); - - dev_gone = brcms_deviceremoved(wlc_hw->wlc); - - if (dev_gone) { - wlc_hw->sbclk = false; - wlc_hw->clk = false; - wlc_phy_hw_clk_state_upd(wlc_hw->band->pi, false); - - /* reclaim any posted packets */ - brcms_c_flushqueues(wlc_hw->wlc); - } else { - - /* Reset and disable the core */ - if (bcma_core_is_enabled(wlc_hw->d11core)) { - if (bcma_read32(wlc_hw->d11core, - D11REGOFFS(maccontrol)) & MCTL_EN_MAC) - brcms_c_suspend_mac_and_wait(wlc_hw->wlc); - callbacks += brcms_reset(wlc_hw->wlc->wl); - brcms_c_coredisable(wlc_hw); - } - - /* turn off primary xtal and pll */ - if (!wlc_hw->noreset) { - bcma_host_pci_down(wlc_hw->d11core->bus); - brcms_b_xtal(wlc_hw, OFF); - } - } - - return callbacks; -} - -/* - * Mark the interface nonoperational, stop the software mechanisms, - * disable the hardware, free any transient buffer state. - * Return a count of the number of driver callbacks still pending. - */ -uint brcms_c_down(struct brcms_c_info *wlc) -{ - - uint callbacks = 0; - int i; - bool dev_gone = false; - - brcms_dbg_info(wlc->hw->d11core, "wl%d\n", wlc->pub->unit); - - /* check if we are already in the going down path */ - if (wlc->going_down) { - brcms_err(wlc->hw->d11core, - "wl%d: %s: Driver going down so return\n", - wlc->pub->unit, __func__); - return 0; - } - if (!wlc->pub->up) - return callbacks; - - wlc->going_down = true; - - callbacks += brcms_b_bmac_down_prep(wlc->hw); - - dev_gone = brcms_deviceremoved(wlc); - - /* Call any registered down handlers */ - for (i = 0; i < BRCMS_MAXMODULES; i++) { - if (wlc->modulecb[i].down_fn) - callbacks += - wlc->modulecb[i].down_fn(wlc->modulecb[i].hdl); - } - - /* cancel the watchdog timer */ - if (wlc->WDarmed) { - if (!brcms_del_timer(wlc->wdtimer)) - callbacks++; - wlc->WDarmed = false; - } - /* cancel all other timers */ - callbacks += brcms_c_down_del_timer(wlc); - - wlc->pub->up = false; - - wlc_phy_mute_upd(wlc->band->pi, false, PHY_MUTE_ALL); - - callbacks += brcms_b_down_finish(wlc->hw); - - /* brcms_b_down_finish has done brcms_c_coredisable(). so clk is off */ - wlc->clk = false; - - wlc->going_down = false; - return callbacks; -} - -/* Set the current gmode configuration */ -int brcms_c_set_gmode(struct brcms_c_info *wlc, u8 gmode, bool config) -{ - int ret = 0; - uint i; - struct brcms_c_rateset rs; - /* Default to 54g Auto */ - /* Advertise and use shortslot (-1/0/1 Auto/Off/On) */ - s8 shortslot = BRCMS_SHORTSLOT_AUTO; - bool shortslot_restrict = false; /* Restrict association to stations - * that support shortslot - */ - bool ofdm_basic = false; /* Make 6, 12, and 24 basic rates */ - /* Advertise and use short preambles (-1/0/1 Auto/Off/On) */ - int preamble = BRCMS_PLCP_LONG; - bool preamble_restrict = false; /* Restrict association to stations - * that support short preambles - */ - struct brcms_band *band; - - /* if N-support is enabled, allow Gmode set as long as requested - * Gmode is not GMODE_LEGACY_B - */ - if ((wlc->pub->_n_enab & SUPPORT_11N) && gmode == GMODE_LEGACY_B) - return -ENOTSUPP; - - /* verify that we are dealing with 2G band and grab the band pointer */ - if (wlc->band->bandtype == BRCM_BAND_2G) - band = wlc->band; - else if ((wlc->pub->_nbands > 1) && - (wlc->bandstate[OTHERBANDUNIT(wlc)]->bandtype == BRCM_BAND_2G)) - band = wlc->bandstate[OTHERBANDUNIT(wlc)]; - else - return -EINVAL; - - /* update configuration value */ - if (config) - brcms_c_protection_upd(wlc, BRCMS_PROT_G_USER, gmode); - - /* Clear rateset override */ - memset(&rs, 0, sizeof(rs)); - - switch (gmode) { - case GMODE_LEGACY_B: - shortslot = BRCMS_SHORTSLOT_OFF; - brcms_c_rateset_copy(&gphy_legacy_rates, &rs); - - break; - - case GMODE_LRS: - break; - - case GMODE_AUTO: - /* Accept defaults */ - break; - - case GMODE_ONLY: - ofdm_basic = true; - preamble = BRCMS_PLCP_SHORT; - preamble_restrict = true; - break; - - case GMODE_PERFORMANCE: - shortslot = BRCMS_SHORTSLOT_ON; - shortslot_restrict = true; - ofdm_basic = true; - preamble = BRCMS_PLCP_SHORT; - preamble_restrict = true; - break; - - default: - /* Error */ - brcms_err(wlc->hw->d11core, "wl%d: %s: invalid gmode %d\n", - wlc->pub->unit, __func__, gmode); - return -ENOTSUPP; - } - - band->gmode = gmode; - - wlc->shortslot_override = shortslot; - - /* Use the default 11g rateset */ - if (!rs.count) - brcms_c_rateset_copy(&cck_ofdm_rates, &rs); - - if (ofdm_basic) { - for (i = 0; i < rs.count; i++) { - if (rs.rates[i] == BRCM_RATE_6M - || rs.rates[i] == BRCM_RATE_12M - || rs.rates[i] == BRCM_RATE_24M) - rs.rates[i] |= BRCMS_RATE_FLAG; - } - } - - /* Set default bss rateset */ - wlc->default_bss->rateset.count = rs.count; - memcpy(wlc->default_bss->rateset.rates, rs.rates, - sizeof(wlc->default_bss->rateset.rates)); - - return ret; -} - -int brcms_c_set_nmode(struct brcms_c_info *wlc) -{ - uint i; - s32 nmode = AUTO; - - if (wlc->stf->txstreams == WL_11N_3x3) - nmode = WL_11N_3x3; - else - nmode = WL_11N_2x2; - - /* force GMODE_AUTO if NMODE is ON */ - brcms_c_set_gmode(wlc, GMODE_AUTO, true); - if (nmode == WL_11N_3x3) - wlc->pub->_n_enab = SUPPORT_HT; - else - wlc->pub->_n_enab = SUPPORT_11N; - wlc->default_bss->flags |= BRCMS_BSS_HT; - /* add the mcs rates to the default and hw ratesets */ - brcms_c_rateset_mcs_build(&wlc->default_bss->rateset, - wlc->stf->txstreams); - for (i = 0; i < wlc->pub->_nbands; i++) - memcpy(wlc->bandstate[i]->hw_rateset.mcs, - wlc->default_bss->rateset.mcs, MCSSET_LEN); - - return 0; -} - -static int -brcms_c_set_internal_rateset(struct brcms_c_info *wlc, - struct brcms_c_rateset *rs_arg) -{ - struct brcms_c_rateset rs, new; - uint bandunit; - - memcpy(&rs, rs_arg, sizeof(struct brcms_c_rateset)); - - /* check for bad count value */ - if ((rs.count == 0) || (rs.count > BRCMS_NUMRATES)) - return -EINVAL; - - /* try the current band */ - bandunit = wlc->band->bandunit; - memcpy(&new, &rs, sizeof(struct brcms_c_rateset)); - if (brcms_c_rate_hwrs_filter_sort_validate - (&new, &wlc->bandstate[bandunit]->hw_rateset, true, - wlc->stf->txstreams)) - goto good; - - /* try the other band */ - if (brcms_is_mband_unlocked(wlc)) { - bandunit = OTHERBANDUNIT(wlc); - memcpy(&new, &rs, sizeof(struct brcms_c_rateset)); - if (brcms_c_rate_hwrs_filter_sort_validate(&new, - &wlc-> - bandstate[bandunit]-> - hw_rateset, true, - wlc->stf->txstreams)) - goto good; - } - - return -EBADE; - - good: - /* apply new rateset */ - memcpy(&wlc->default_bss->rateset, &new, - sizeof(struct brcms_c_rateset)); - memcpy(&wlc->bandstate[bandunit]->defrateset, &new, - sizeof(struct brcms_c_rateset)); - return 0; -} - -static void brcms_c_ofdm_rateset_war(struct brcms_c_info *wlc) -{ - u8 r; - bool war = false; - - if (wlc->pub->associated) - r = wlc->bsscfg->current_bss->rateset.rates[0]; - else - r = wlc->default_bss->rateset.rates[0]; - - wlc_phy_ofdm_rateset_war(wlc->band->pi, war); -} - -int brcms_c_set_channel(struct brcms_c_info *wlc, u16 channel) -{ - u16 chspec = ch20mhz_chspec(channel); - - if (channel < 0 || channel > MAXCHANNEL) - return -EINVAL; - - if (!brcms_c_valid_chanspec_db(wlc->cmi, chspec)) - return -EINVAL; - - - if (!wlc->pub->up && brcms_is_mband_unlocked(wlc)) { - if (wlc->band->bandunit != chspec_bandunit(chspec)) - wlc->bandinit_pending = true; - else - wlc->bandinit_pending = false; - } - - wlc->default_bss->chanspec = chspec; - /* brcms_c_BSSinit() will sanitize the rateset before - * using it.. */ - if (wlc->pub->up && (wlc_phy_chanspec_get(wlc->band->pi) != chspec)) { - brcms_c_set_home_chanspec(wlc, chspec); - brcms_c_suspend_mac_and_wait(wlc); - brcms_c_set_chanspec(wlc, chspec); - brcms_c_enable_mac(wlc); - } - return 0; -} - -int brcms_c_set_rate_limit(struct brcms_c_info *wlc, u16 srl, u16 lrl) -{ - int ac; - - if (srl < 1 || srl > RETRY_SHORT_MAX || - lrl < 1 || lrl > RETRY_SHORT_MAX) - return -EINVAL; - - wlc->SRL = srl; - wlc->LRL = lrl; - - brcms_b_retrylimit_upd(wlc->hw, wlc->SRL, wlc->LRL); - - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { - wlc->wme_retries[ac] = SFIELD(wlc->wme_retries[ac], - EDCF_SHORT, wlc->SRL); - wlc->wme_retries[ac] = SFIELD(wlc->wme_retries[ac], - EDCF_LONG, wlc->LRL); - } - brcms_c_wme_retries_write(wlc); - - return 0; -} - -void brcms_c_get_current_rateset(struct brcms_c_info *wlc, - struct brcm_rateset *currs) -{ - struct brcms_c_rateset *rs; - - if (wlc->pub->associated) - rs = &wlc->bsscfg->current_bss->rateset; - else - rs = &wlc->default_bss->rateset; - - /* Copy only legacy rateset section */ - currs->count = rs->count; - memcpy(&currs->rates, &rs->rates, rs->count); -} - -int brcms_c_set_rateset(struct brcms_c_info *wlc, struct brcm_rateset *rs) -{ - struct brcms_c_rateset internal_rs; - int bcmerror; - - if (rs->count > BRCMS_NUMRATES) - return -ENOBUFS; - - memset(&internal_rs, 0, sizeof(internal_rs)); - - /* Copy only legacy rateset section */ - internal_rs.count = rs->count; - memcpy(&internal_rs.rates, &rs->rates, internal_rs.count); - - /* merge rateset coming in with the current mcsset */ - if (wlc->pub->_n_enab & SUPPORT_11N) { - struct brcms_bss_info *mcsset_bss; - if (wlc->pub->associated) - mcsset_bss = wlc->bsscfg->current_bss; - else - mcsset_bss = wlc->default_bss; - memcpy(internal_rs.mcs, &mcsset_bss->rateset.mcs[0], - MCSSET_LEN); - } - - bcmerror = brcms_c_set_internal_rateset(wlc, &internal_rs); - if (!bcmerror) - brcms_c_ofdm_rateset_war(wlc); - - 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; -} - -u16 brcms_c_get_phy_type(struct brcms_c_info *wlc, int phyidx) -{ - return wlc->band->phytype; -} - -void brcms_c_set_shortslot_override(struct brcms_c_info *wlc, s8 sslot_override) -{ - wlc->shortslot_override = sslot_override; - - /* - * shortslot is an 11g feature, so no more work if we are - * currently on the 5G band - */ - if (wlc->band->bandtype == BRCM_BAND_5G) - return; - - if (wlc->pub->up && wlc->pub->associated) { - /* let watchdog or beacon processing update shortslot */ - } else if (wlc->pub->up) { - /* unassociated shortslot is off */ - brcms_c_switch_shortslot(wlc, false); - } else { - /* driver is down, so just update the brcms_c_info - * value */ - if (wlc->shortslot_override == BRCMS_SHORTSLOT_AUTO) - wlc->shortslot = false; - else - wlc->shortslot = - (wlc->shortslot_override == - BRCMS_SHORTSLOT_ON); - } -} - -/* - * register watchdog and down handlers. - */ -int brcms_c_module_register(struct brcms_pub *pub, - const char *name, struct brcms_info *hdl, - int (*d_fn)(void *handle)) -{ - struct brcms_c_info *wlc = (struct brcms_c_info *) pub->wlc; - int i; - - /* find an empty entry and just add, no duplication check! */ - for (i = 0; i < BRCMS_MAXMODULES; i++) { - if (wlc->modulecb[i].name[0] == '\0') { - strncpy(wlc->modulecb[i].name, name, - sizeof(wlc->modulecb[i].name) - 1); - wlc->modulecb[i].hdl = hdl; - wlc->modulecb[i].down_fn = d_fn; - return 0; - } - } - - return -ENOSR; -} - -/* unregister module callbacks */ -int brcms_c_module_unregister(struct brcms_pub *pub, const char *name, - struct brcms_info *hdl) -{ - struct brcms_c_info *wlc = (struct brcms_c_info *) pub->wlc; - int i; - - if (wlc == NULL) - return -ENODATA; - - for (i = 0; i < BRCMS_MAXMODULES; i++) { - if (!strcmp(wlc->modulecb[i].name, name) && - (wlc->modulecb[i].hdl == hdl)) { - memset(&wlc->modulecb[i], 0, sizeof(wlc->modulecb[i])); - return 0; - } - } - - /* table not found! */ - return -ENODATA; -} - -static bool brcms_c_chipmatch_pci(struct bcma_device *core) -{ - struct pci_dev *pcidev = core->bus->host_pci; - u16 vendor = pcidev->vendor; - u16 device = pcidev->device; - - if (vendor != PCI_VENDOR_ID_BROADCOM) { - pr_err("unknown vendor id %04x\n", vendor); - return false; - } - - if (device == BCM43224_D11N_ID_VEN1 || device == BCM43224_CHIP_ID) - return true; - if ((device == BCM43224_D11N_ID) || (device == BCM43225_D11N2G_ID)) - return true; - if (device == BCM4313_D11N2G_ID || device == BCM4313_CHIP_ID) - return true; - if ((device == BCM43236_D11N_ID) || (device == BCM43236_D11N2G_ID)) - return true; - - pr_err("unknown device id %04x\n", device); - return false; -} - -static bool brcms_c_chipmatch_soc(struct bcma_device *core) -{ - struct bcma_chipinfo *chipinfo = &core->bus->chipinfo; - - if (chipinfo->id == BCMA_CHIP_ID_BCM4716) - return true; - - pr_err("unknown chip id %04x\n", chipinfo->id); - return false; -} - -bool brcms_c_chipmatch(struct bcma_device *core) -{ - switch (core->bus->hosttype) { - case BCMA_HOSTTYPE_PCI: - return brcms_c_chipmatch_pci(core); - case BCMA_HOSTTYPE_SOC: - return brcms_c_chipmatch_soc(core); - default: - pr_err("unknown host type: %i\n", core->bus->hosttype); - return false; - } -} - -u16 brcms_b_rate_shm_offset(struct brcms_hardware *wlc_hw, u8 rate) -{ - u16 table_ptr; - u8 phy_rate, index; - - /* get the phy specific rate encoding for the PLCP SIGNAL field */ - if (is_ofdm_rate(rate)) - table_ptr = M_RT_DIRMAP_A; - else - table_ptr = M_RT_DIRMAP_B; - - /* for a given rate, the LS-nibble of the PLCP SIGNAL field is - * the index into the rate table. - */ - phy_rate = rate_info[rate] & BRCMS_RATE_MASK; - index = phy_rate & 0xf; - - /* Find the SHM pointer to the rate table entry by looking in the - * Direct-map Table - */ - return 2 * brcms_b_read_shm(wlc_hw, table_ptr + (index * 2)); -} - -/* - * bcmc_fid_generate: - * Generate frame ID for a BCMC packet. The frag field is not used - * for MC frames so is used as part of the sequence number. - */ -static inline u16 -bcmc_fid_generate(struct brcms_c_info *wlc, struct brcms_bss_cfg *bsscfg, - struct d11txh *txh) -{ - u16 frameid; - - frameid = le16_to_cpu(txh->TxFrameID) & ~(TXFID_SEQ_MASK | - TXFID_QUEUE_MASK); - frameid |= - (((wlc-> - mc_fid_counter++) << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) | - TX_BCMC_FIFO; - - return frameid; -} - -static uint -brcms_c_calc_ack_time(struct brcms_c_info *wlc, u32 rspec, - u8 preamble_type) -{ - uint dur = 0; - - /* - * Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that - * is less than or equal to the rate of the immediately previous - * frame in the FES - */ - rspec = brcms_basic_rate(wlc, rspec); - /* ACK frame len == 14 == 2(fc) + 2(dur) + 6(ra) + 4(fcs) */ - dur = - brcms_c_calc_frame_time(wlc, rspec, preamble_type, - (DOT11_ACK_LEN + FCS_LEN)); - return dur; -} - -static uint -brcms_c_calc_cts_time(struct brcms_c_info *wlc, u32 rspec, - u8 preamble_type) -{ - return brcms_c_calc_ack_time(wlc, rspec, preamble_type); -} - -static uint -brcms_c_calc_ba_time(struct brcms_c_info *wlc, u32 rspec, - u8 preamble_type) -{ - /* - * Spec 9.6: ack rate is the highest rate in BSSBasicRateSet that - * is less than or equal to the rate of the immediately previous - * frame in the FES - */ - rspec = brcms_basic_rate(wlc, rspec); - /* BA len == 32 == 16(ctl hdr) + 4(ba len) + 8(bitmap) + 4(fcs) */ - return brcms_c_calc_frame_time(wlc, rspec, preamble_type, - (DOT11_BA_LEN + DOT11_BA_BITMAP_LEN + - FCS_LEN)); -} - -/* brcms_c_compute_frame_dur() - * - * Calculate the 802.11 MAC header DUR field for MPDU - * DUR for a single frame = 1 SIFS + 1 ACK - * DUR for a frame with following frags = 3 SIFS + 2 ACK + next frag time - * - * rate MPDU rate in unit of 500kbps - * next_frag_len next MPDU length in bytes - * preamble_type use short/GF or long/MM PLCP header - */ -static u16 -brcms_c_compute_frame_dur(struct brcms_c_info *wlc, u32 rate, - u8 preamble_type, uint next_frag_len) -{ - u16 dur, sifs; - - sifs = get_sifs(wlc->band); - - dur = sifs; - dur += (u16) brcms_c_calc_ack_time(wlc, rate, preamble_type); - - if (next_frag_len) { - /* Double the current DUR to get 2 SIFS + 2 ACKs */ - dur *= 2; - /* add another SIFS and the frag time */ - dur += sifs; - dur += - (u16) brcms_c_calc_frame_time(wlc, rate, preamble_type, - next_frag_len); - } - return dur; -} - -/* The opposite of brcms_c_calc_frame_time */ -static uint -brcms_c_calc_frame_len(struct brcms_c_info *wlc, u32 ratespec, - u8 preamble_type, uint dur) -{ - uint nsyms, mac_len, Ndps, kNdps; - uint rate = rspec2rate(ratespec); - - if (is_mcs_rate(ratespec)) { - uint mcs = ratespec & RSPEC_RATE_MASK; - int tot_streams = mcs_2_txstreams(mcs) + rspec_stc(ratespec); - dur -= PREN_PREAMBLE + (tot_streams * PREN_PREAMBLE_EXT); - /* payload calculation matches that of regular ofdm */ - if (wlc->band->bandtype == BRCM_BAND_2G) - dur -= DOT11_OFDM_SIGNAL_EXTENSION; - /* kNdbps = kbps * 4 */ - kNdps = mcs_2_rate(mcs, rspec_is40mhz(ratespec), - rspec_issgi(ratespec)) * 4; - nsyms = dur / APHY_SYMBOL_TIME; - mac_len = - ((nsyms * kNdps) - - ((APHY_SERVICE_NBITS + APHY_TAIL_NBITS) * 1000)) / 8000; - } else if (is_ofdm_rate(ratespec)) { - dur -= APHY_PREAMBLE_TIME; - dur -= APHY_SIGNAL_TIME; - /* Ndbps = Mbps * 4 = rate(500Kbps) * 2 */ - Ndps = rate * 2; - nsyms = dur / APHY_SYMBOL_TIME; - mac_len = - ((nsyms * Ndps) - - (APHY_SERVICE_NBITS + APHY_TAIL_NBITS)) / 8; - } else { - if (preamble_type & BRCMS_SHORT_PREAMBLE) - dur -= BPHY_PLCP_SHORT_TIME; - else - dur -= BPHY_PLCP_TIME; - mac_len = dur * rate; - /* divide out factor of 2 in rate (1/2 mbps) */ - mac_len = mac_len / 8 / 2; - } - return mac_len; -} - -/* - * Return true if the specified rate is supported by the specified band. - * BRCM_BAND_AUTO indicates the current band. - */ -static bool brcms_c_valid_rate(struct brcms_c_info *wlc, u32 rspec, int band, - bool verbose) -{ - struct brcms_c_rateset *hw_rateset; - uint i; - - if ((band == BRCM_BAND_AUTO) || (band == wlc->band->bandtype)) - hw_rateset = &wlc->band->hw_rateset; - else if (wlc->pub->_nbands > 1) - hw_rateset = &wlc->bandstate[OTHERBANDUNIT(wlc)]->hw_rateset; - else - /* other band specified and we are a single band device */ - return false; - - /* check if this is a mimo rate */ - if (is_mcs_rate(rspec)) { - if ((rspec & RSPEC_RATE_MASK) >= MCS_TABLE_SIZE) - goto error; - - return isset(hw_rateset->mcs, (rspec & RSPEC_RATE_MASK)); - } - - for (i = 0; i < hw_rateset->count; i++) - if (hw_rateset->rates[i] == rspec2rate(rspec)) - return true; - error: - if (verbose) - brcms_err(wlc->hw->d11core, "wl%d: valid_rate: rate spec 0x%x " - "not in hw_rateset\n", wlc->pub->unit, rspec); - - return false; -} - -static u32 -mac80211_wlc_set_nrate(struct brcms_c_info *wlc, struct brcms_band *cur_band, - u32 int_val) -{ - struct bcma_device *core = wlc->hw->d11core; - u8 stf = (int_val & NRATE_STF_MASK) >> NRATE_STF_SHIFT; - u8 rate = int_val & NRATE_RATE_MASK; - u32 rspec; - bool ismcs = ((int_val & NRATE_MCS_INUSE) == NRATE_MCS_INUSE); - bool issgi = ((int_val & NRATE_SGI_MASK) >> NRATE_SGI_SHIFT); - bool override_mcs_only = ((int_val & NRATE_OVERRIDE_MCS_ONLY) - == NRATE_OVERRIDE_MCS_ONLY); - int bcmerror = 0; - - if (!ismcs) - return (u32) rate; - - /* validate the combination of rate/mcs/stf is allowed */ - if ((wlc->pub->_n_enab & SUPPORT_11N) && ismcs) { - /* mcs only allowed when nmode */ - if (stf > PHY_TXC1_MODE_SDM) { - brcms_err(core, "wl%d: %s: Invalid stf\n", - wlc->pub->unit, __func__); - bcmerror = -EINVAL; - goto done; - } - - /* mcs 32 is a special case, DUP mode 40 only */ - if (rate == 32) { - if (!CHSPEC_IS40(wlc->home_chanspec) || - ((stf != PHY_TXC1_MODE_SISO) - && (stf != PHY_TXC1_MODE_CDD))) { - brcms_err(core, "wl%d: %s: Invalid mcs 32\n", - wlc->pub->unit, __func__); - bcmerror = -EINVAL; - goto done; - } - /* mcs > 7 must use stf SDM */ - } else if (rate > HIGHEST_SINGLE_STREAM_MCS) { - /* mcs > 7 must use stf SDM */ - if (stf != PHY_TXC1_MODE_SDM) { - brcms_dbg_mac80211(core, "wl%d: enabling " - "SDM mode for mcs %d\n", - wlc->pub->unit, rate); - stf = PHY_TXC1_MODE_SDM; - } - } else { - /* - * MCS 0-7 may use SISO, CDD, and for - * phy_rev >= 3 STBC - */ - if ((stf > PHY_TXC1_MODE_STBC) || - (!BRCMS_STBC_CAP_PHY(wlc) - && (stf == PHY_TXC1_MODE_STBC))) { - brcms_err(core, "wl%d: %s: Invalid STBC\n", - wlc->pub->unit, __func__); - bcmerror = -EINVAL; - goto done; - } - } - } else if (is_ofdm_rate(rate)) { - if ((stf != PHY_TXC1_MODE_CDD) && (stf != PHY_TXC1_MODE_SISO)) { - brcms_err(core, "wl%d: %s: Invalid OFDM\n", - wlc->pub->unit, __func__); - bcmerror = -EINVAL; - goto done; - } - } else if (is_cck_rate(rate)) { - if ((cur_band->bandtype != BRCM_BAND_2G) - || (stf != PHY_TXC1_MODE_SISO)) { - brcms_err(core, "wl%d: %s: Invalid CCK\n", - wlc->pub->unit, __func__); - bcmerror = -EINVAL; - goto done; - } - } else { - brcms_err(core, "wl%d: %s: Unknown rate type\n", - wlc->pub->unit, __func__); - bcmerror = -EINVAL; - goto done; - } - /* make sure multiple antennae are available for non-siso rates */ - if ((stf != PHY_TXC1_MODE_SISO) && (wlc->stf->txstreams == 1)) { - brcms_err(core, "wl%d: %s: SISO antenna but !SISO " - "request\n", wlc->pub->unit, __func__); - bcmerror = -EINVAL; - goto done; - } - - rspec = rate; - if (ismcs) { - rspec |= RSPEC_MIMORATE; - /* For STBC populate the STC field of the ratespec */ - if (stf == PHY_TXC1_MODE_STBC) { - u8 stc; - stc = 1; /* Nss for single stream is always 1 */ - rspec |= (stc << RSPEC_STC_SHIFT); - } - } - - rspec |= (stf << RSPEC_STF_SHIFT); - - if (override_mcs_only) - rspec |= RSPEC_OVERRIDE_MCS_ONLY; - - if (issgi) - rspec |= RSPEC_SHORT_GI; - - if ((rate != 0) - && !brcms_c_valid_rate(wlc, rspec, cur_band->bandtype, true)) - return rate; - - return rspec; -done: - return rate; -} - -/* - * Compute PLCP, but only requires actual rate and length of pkt. - * Rate is given in the driver standard multiple of 500 kbps. - * le is set for 11 Mbps rate if necessary. - * Broken out for PRQ. - */ - -static void brcms_c_cck_plcp_set(struct brcms_c_info *wlc, int rate_500, - uint length, u8 *plcp) -{ - u16 usec = 0; - u8 le = 0; - - switch (rate_500) { - case BRCM_RATE_1M: - usec = length << 3; - break; - case BRCM_RATE_2M: - usec = length << 2; - break; - case BRCM_RATE_5M5: - usec = (length << 4) / 11; - if ((length << 4) - (usec * 11) > 0) - usec++; - break; - case BRCM_RATE_11M: - usec = (length << 3) / 11; - if ((length << 3) - (usec * 11) > 0) { - usec++; - if ((usec * 11) - (length << 3) >= 8) - le = D11B_PLCP_SIGNAL_LE; - } - break; - - default: - brcms_err(wlc->hw->d11core, - "brcms_c_cck_plcp_set: unsupported rate %d\n", - rate_500); - rate_500 = BRCM_RATE_1M; - usec = length << 3; - break; - } - /* PLCP signal byte */ - plcp[0] = rate_500 * 5; /* r (500kbps) * 5 == r (100kbps) */ - /* PLCP service byte */ - plcp[1] = (u8) (le | D11B_PLCP_SIGNAL_LOCKED); - /* PLCP length u16, little endian */ - plcp[2] = usec & 0xff; - plcp[3] = (usec >> 8) & 0xff; - /* PLCP CRC16 */ - plcp[4] = 0; - plcp[5] = 0; -} - -/* Rate: 802.11 rate code, length: PSDU length in octets */ -static void brcms_c_compute_mimo_plcp(u32 rspec, uint length, u8 *plcp) -{ - u8 mcs = (u8) (rspec & RSPEC_RATE_MASK); - plcp[0] = mcs; - if (rspec_is40mhz(rspec) || (mcs == 32)) - plcp[0] |= MIMO_PLCP_40MHZ; - BRCMS_SET_MIMO_PLCP_LEN(plcp, length); - plcp[3] = rspec_mimoplcp3(rspec); /* rspec already holds this byte */ - plcp[3] |= 0x7; /* set smoothing, not sounding ppdu & reserved */ - plcp[4] = 0; /* number of extension spatial streams bit 0 & 1 */ - plcp[5] = 0; -} - -/* Rate: 802.11 rate code, length: PSDU length in octets */ -static void -brcms_c_compute_ofdm_plcp(u32 rspec, u32 length, u8 *plcp) -{ - u8 rate_signal; - u32 tmp = 0; - int rate = rspec2rate(rspec); - - /* - * encode rate per 802.11a-1999 sec 17.3.4.1, with lsb - * transmitted first - */ - rate_signal = rate_info[rate] & BRCMS_RATE_MASK; - memset(plcp, 0, D11_PHY_HDR_LEN); - D11A_PHY_HDR_SRATE((struct ofdm_phy_hdr *) plcp, rate_signal); - - tmp = (length & 0xfff) << 5; - plcp[2] |= (tmp >> 16) & 0xff; - plcp[1] |= (tmp >> 8) & 0xff; - plcp[0] |= tmp & 0xff; -} - -/* Rate: 802.11 rate code, length: PSDU length in octets */ -static void brcms_c_compute_cck_plcp(struct brcms_c_info *wlc, u32 rspec, - uint length, u8 *plcp) -{ - int rate = rspec2rate(rspec); - - brcms_c_cck_plcp_set(wlc, rate, length, plcp); -} - -static void -brcms_c_compute_plcp(struct brcms_c_info *wlc, u32 rspec, - uint length, u8 *plcp) -{ - if (is_mcs_rate(rspec)) - brcms_c_compute_mimo_plcp(rspec, length, plcp); - else if (is_ofdm_rate(rspec)) - brcms_c_compute_ofdm_plcp(rspec, length, plcp); - else - brcms_c_compute_cck_plcp(wlc, rspec, length, plcp); -} - -/* brcms_c_compute_rtscts_dur() - * - * Calculate the 802.11 MAC header DUR field for an RTS or CTS frame - * DUR for normal RTS/CTS w/ frame = 3 SIFS + 1 CTS + next frame time + 1 ACK - * DUR for CTS-TO-SELF w/ frame = 2 SIFS + next frame time + 1 ACK - * - * cts cts-to-self or rts/cts - * rts_rate rts or cts rate in unit of 500kbps - * rate next MPDU rate in unit of 500kbps - * frame_len next MPDU frame length in bytes - */ -u16 -brcms_c_compute_rtscts_dur(struct brcms_c_info *wlc, bool cts_only, - u32 rts_rate, - u32 frame_rate, u8 rts_preamble_type, - u8 frame_preamble_type, uint frame_len, bool ba) -{ - u16 dur, sifs; - - sifs = get_sifs(wlc->band); - - if (!cts_only) { - /* RTS/CTS */ - dur = 3 * sifs; - dur += - (u16) brcms_c_calc_cts_time(wlc, rts_rate, - rts_preamble_type); - } else { - /* CTS-TO-SELF */ - dur = 2 * sifs; - } - - dur += - (u16) brcms_c_calc_frame_time(wlc, frame_rate, frame_preamble_type, - frame_len); - if (ba) - dur += - (u16) brcms_c_calc_ba_time(wlc, frame_rate, - BRCMS_SHORT_PREAMBLE); - else - dur += - (u16) brcms_c_calc_ack_time(wlc, frame_rate, - frame_preamble_type); - return dur; -} - -static u16 brcms_c_phytxctl1_calc(struct brcms_c_info *wlc, u32 rspec) -{ - u16 phyctl1 = 0; - u16 bw; - - if (BRCMS_ISLCNPHY(wlc->band)) { - bw = PHY_TXC1_BW_20MHZ; - } else { - bw = rspec_get_bw(rspec); - /* 10Mhz is not supported yet */ - if (bw < PHY_TXC1_BW_20MHZ) { - brcms_err(wlc->hw->d11core, "phytxctl1_calc: bw %d is " - "not supported yet, set to 20L\n", bw); - bw = PHY_TXC1_BW_20MHZ; - } - } - - if (is_mcs_rate(rspec)) { - uint mcs = rspec & RSPEC_RATE_MASK; - - /* bw, stf, coding-type is part of rspec_phytxbyte2 returns */ - phyctl1 = rspec_phytxbyte2(rspec); - /* set the upper byte of phyctl1 */ - phyctl1 |= (mcs_table[mcs].tx_phy_ctl3 << 8); - } else if (is_cck_rate(rspec) && !BRCMS_ISLCNPHY(wlc->band) - && !BRCMS_ISSSLPNPHY(wlc->band)) { - /* - * In CCK mode LPPHY overloads OFDM Modulation bits with CCK - * Data Rate. Eventually MIMOPHY would also be converted to - * this format - */ - /* 0 = 1Mbps; 1 = 2Mbps; 2 = 5.5Mbps; 3 = 11Mbps */ - phyctl1 = (bw | (rspec_stf(rspec) << PHY_TXC1_MODE_SHIFT)); - } else { /* legacy OFDM/CCK */ - s16 phycfg; - /* get the phyctl byte from rate phycfg table */ - phycfg = brcms_c_rate_legacy_phyctl(rspec2rate(rspec)); - if (phycfg == -1) { - brcms_err(wlc->hw->d11core, "phytxctl1_calc: wrong " - "legacy OFDM/CCK rate\n"); - phycfg = 0; - } - /* set the upper byte of phyctl1 */ - phyctl1 = - (bw | (phycfg << 8) | - (rspec_stf(rspec) << PHY_TXC1_MODE_SHIFT)); - } - return phyctl1; -} - -/* - * Add struct d11txh, struct cck_phy_hdr. - * - * 'p' data must start with 802.11 MAC header - * 'p' must allow enough bytes of local headers to be "pushed" onto the packet - * - * headroom == D11_PHY_HDR_LEN + D11_TXH_LEN (D11_TXH_LEN is now 104 bytes) - * - */ -static u16 -brcms_c_d11hdrs_mac80211(struct brcms_c_info *wlc, struct ieee80211_hw *hw, - struct sk_buff *p, struct scb *scb, uint frag, - uint nfrags, uint queue, uint next_frag_len) -{ - struct ieee80211_hdr *h; - struct d11txh *txh; - u8 *plcp, plcp_fallback[D11_PHY_HDR_LEN]; - int len, phylen, rts_phylen; - u16 mch, phyctl, xfts, mainrates; - u16 seq = 0, mcl = 0, status = 0, frameid = 0; - u32 rspec[2] = { BRCM_RATE_1M, BRCM_RATE_1M }; - u32 rts_rspec[2] = { BRCM_RATE_1M, BRCM_RATE_1M }; - bool use_rts = false; - bool use_cts = false; - bool use_rifs = false; - bool short_preamble[2] = { false, false }; - u8 preamble_type[2] = { BRCMS_LONG_PREAMBLE, BRCMS_LONG_PREAMBLE }; - u8 rts_preamble_type[2] = { BRCMS_LONG_PREAMBLE, BRCMS_LONG_PREAMBLE }; - u8 *rts_plcp, rts_plcp_fallback[D11_PHY_HDR_LEN]; - struct ieee80211_rts *rts = NULL; - bool qos; - uint ac; - bool hwtkmic = false; - u16 mimo_ctlchbw = PHY_TXC1_BW_20MHZ; -#define ANTCFG_NONE 0xFF - u8 antcfg = ANTCFG_NONE; - u8 fbantcfg = ANTCFG_NONE; - uint phyctl1_stf = 0; - u16 durid = 0; - struct ieee80211_tx_rate *txrate[2]; - int k; - struct ieee80211_tx_info *tx_info; - bool is_mcs; - u16 mimo_txbw; - u8 mimo_preamble_type; - - /* locate 802.11 MAC header */ - h = (struct ieee80211_hdr *)(p->data); - qos = ieee80211_is_data_qos(h->frame_control); - - /* compute length of frame in bytes for use in PLCP computations */ - len = p->len; - phylen = len + FCS_LEN; - - /* Get tx_info */ - tx_info = IEEE80211_SKB_CB(p); - - /* add PLCP */ - plcp = skb_push(p, D11_PHY_HDR_LEN); - - /* add Broadcom tx descriptor header */ - txh = (struct d11txh *) skb_push(p, D11_TXH_LEN); - memset(txh, 0, D11_TXH_LEN); - - /* setup frameid */ - if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) { - /* non-AP STA should never use BCMC queue */ - if (queue == TX_BCMC_FIFO) { - brcms_err(wlc->hw->d11core, - "wl%d: %s: ASSERT queue == TX_BCMC!\n", - wlc->pub->unit, __func__); - frameid = bcmc_fid_generate(wlc, NULL, txh); - } else { - /* Increment the counter for first fragment */ - if (tx_info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) - scb->seqnum[p->priority]++; - - /* extract fragment number from frame first */ - seq = le16_to_cpu(h->seq_ctrl) & FRAGNUM_MASK; - seq |= (scb->seqnum[p->priority] << SEQNUM_SHIFT); - h->seq_ctrl = cpu_to_le16(seq); - - frameid = ((seq << TXFID_SEQ_SHIFT) & TXFID_SEQ_MASK) | - (queue & TXFID_QUEUE_MASK); - } - } - frameid |= queue & TXFID_QUEUE_MASK; - - /* set the ignpmq bit for all pkts tx'd in PS mode and for beacons */ - if (ieee80211_is_beacon(h->frame_control)) - mcl |= TXC_IGNOREPMQ; - - txrate[0] = tx_info->control.rates; - txrate[1] = txrate[0] + 1; - - /* - * if rate control algorithm didn't give us a fallback - * rate, use the primary rate - */ - if (txrate[1]->idx < 0) - txrate[1] = txrate[0]; - - for (k = 0; k < hw->max_rates; k++) { - is_mcs = txrate[k]->flags & IEEE80211_TX_RC_MCS ? true : false; - if (!is_mcs) { - if ((txrate[k]->idx >= 0) - && (txrate[k]->idx < - hw->wiphy->bands[tx_info->band]->n_bitrates)) { - rspec[k] = - hw->wiphy->bands[tx_info->band]-> - bitrates[txrate[k]->idx].hw_value; - short_preamble[k] = - txrate[k]-> - flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE ? - true : false; - } else { - rspec[k] = BRCM_RATE_1M; - } - } else { - rspec[k] = mac80211_wlc_set_nrate(wlc, wlc->band, - NRATE_MCS_INUSE | txrate[k]->idx); - } - - /* - * Currently only support same setting for primay and - * fallback rates. Unify flags for each rate into a - * single value for the frame - */ - use_rts |= - txrate[k]-> - flags & IEEE80211_TX_RC_USE_RTS_CTS ? true : false; - use_cts |= - txrate[k]-> - flags & IEEE80211_TX_RC_USE_CTS_PROTECT ? true : false; - - - /* - * (1) RATE: - * determine and validate primary rate - * and fallback rates - */ - if (!rspec_active(rspec[k])) { - rspec[k] = BRCM_RATE_1M; - } else { - if (!is_multicast_ether_addr(h->addr1)) { - /* set tx antenna config */ - brcms_c_antsel_antcfg_get(wlc->asi, false, - false, 0, 0, &antcfg, &fbantcfg); - } - } - } - - phyctl1_stf = wlc->stf->ss_opmode; - - if (wlc->pub->_n_enab & SUPPORT_11N) { - for (k = 0; k < hw->max_rates; k++) { - /* - * apply siso/cdd to single stream mcs's or ofdm - * if rspec is auto selected - */ - if (((is_mcs_rate(rspec[k]) && - is_single_stream(rspec[k] & RSPEC_RATE_MASK)) || - is_ofdm_rate(rspec[k])) - && ((rspec[k] & RSPEC_OVERRIDE_MCS_ONLY) - || !(rspec[k] & RSPEC_OVERRIDE))) { - rspec[k] &= ~(RSPEC_STF_MASK | RSPEC_STC_MASK); - - /* For SISO MCS use STBC if possible */ - if (is_mcs_rate(rspec[k]) - && BRCMS_STF_SS_STBC_TX(wlc, scb)) { - u8 stc; - - /* Nss for single stream is always 1 */ - stc = 1; - rspec[k] |= (PHY_TXC1_MODE_STBC << - RSPEC_STF_SHIFT) | - (stc << RSPEC_STC_SHIFT); - } else - rspec[k] |= - (phyctl1_stf << RSPEC_STF_SHIFT); - } - - /* - * Is the phy configured to use 40MHZ frames? If - * so then pick the desired txbw - */ - if (brcms_chspec_bw(wlc->chanspec) == BRCMS_40_MHZ) { - /* default txbw is 20in40 SB */ - mimo_ctlchbw = mimo_txbw = - CHSPEC_SB_UPPER(wlc_phy_chanspec_get( - wlc->band->pi)) - ? PHY_TXC1_BW_20MHZ_UP : PHY_TXC1_BW_20MHZ; - - if (is_mcs_rate(rspec[k])) { - /* mcs 32 must be 40b/w DUP */ - if ((rspec[k] & RSPEC_RATE_MASK) - == 32) { - mimo_txbw = - PHY_TXC1_BW_40MHZ_DUP; - /* use override */ - } else if (wlc->mimo_40txbw != AUTO) - mimo_txbw = wlc->mimo_40txbw; - /* else check if dst is using 40 Mhz */ - else if (scb->flags & SCB_IS40) - mimo_txbw = PHY_TXC1_BW_40MHZ; - } else if (is_ofdm_rate(rspec[k])) { - if (wlc->ofdm_40txbw != AUTO) - mimo_txbw = wlc->ofdm_40txbw; - } else if (wlc->cck_40txbw != AUTO) { - mimo_txbw = wlc->cck_40txbw; - } - } else { - /* - * mcs32 is 40 b/w only. - * This is possible for probe packets on - * a STA during SCAN - */ - if ((rspec[k] & RSPEC_RATE_MASK) == 32) - /* mcs 0 */ - rspec[k] = RSPEC_MIMORATE; - - mimo_txbw = PHY_TXC1_BW_20MHZ; - } - - /* Set channel width */ - rspec[k] &= ~RSPEC_BW_MASK; - if ((k == 0) || ((k > 0) && is_mcs_rate(rspec[k]))) - rspec[k] |= (mimo_txbw << RSPEC_BW_SHIFT); - else - rspec[k] |= (mimo_ctlchbw << RSPEC_BW_SHIFT); - - /* Disable short GI, not supported yet */ - rspec[k] &= ~RSPEC_SHORT_GI; - - mimo_preamble_type = BRCMS_MM_PREAMBLE; - if (txrate[k]->flags & IEEE80211_TX_RC_GREEN_FIELD) - mimo_preamble_type = BRCMS_GF_PREAMBLE; - - if ((txrate[k]->flags & IEEE80211_TX_RC_MCS) - && (!is_mcs_rate(rspec[k]))) { - brcms_warn(wlc->hw->d11core, - "wl%d: %s: IEEE80211_TX_RC_MCS != is_mcs_rate(rspec)\n", - wlc->pub->unit, __func__); - } - - if (is_mcs_rate(rspec[k])) { - preamble_type[k] = mimo_preamble_type; - - /* - * if SGI is selected, then forced mm - * for single stream - */ - if ((rspec[k] & RSPEC_SHORT_GI) - && is_single_stream(rspec[k] & - RSPEC_RATE_MASK)) - preamble_type[k] = BRCMS_MM_PREAMBLE; - } - - /* should be better conditionalized */ - if (!is_mcs_rate(rspec[0]) - && (tx_info->control.rates[0]. - flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)) - preamble_type[k] = BRCMS_SHORT_PREAMBLE; - } - } else { - for (k = 0; k < hw->max_rates; k++) { - /* Set ctrlchbw as 20Mhz */ - rspec[k] &= ~RSPEC_BW_MASK; - rspec[k] |= (PHY_TXC1_BW_20MHZ << RSPEC_BW_SHIFT); - - /* for nphy, stf of ofdm frames must follow policies */ - if (BRCMS_ISNPHY(wlc->band) && is_ofdm_rate(rspec[k])) { - rspec[k] &= ~RSPEC_STF_MASK; - rspec[k] |= phyctl1_stf << RSPEC_STF_SHIFT; - } - } - } - - /* Reset these for use with AMPDU's */ - txrate[0]->count = 0; - txrate[1]->count = 0; - - /* (2) PROTECTION, may change rspec */ - if ((ieee80211_is_data(h->frame_control) || - ieee80211_is_mgmt(h->frame_control)) && - (phylen > wlc->RTSThresh) && !is_multicast_ether_addr(h->addr1)) - use_rts = true; - - /* (3) PLCP: determine PLCP header and MAC duration, - * fill struct d11txh */ - brcms_c_compute_plcp(wlc, rspec[0], phylen, plcp); - brcms_c_compute_plcp(wlc, rspec[1], phylen, plcp_fallback); - memcpy(&txh->FragPLCPFallback, - plcp_fallback, sizeof(txh->FragPLCPFallback)); - - /* Length field now put in CCK FBR CRC field */ - if (is_cck_rate(rspec[1])) { - txh->FragPLCPFallback[4] = phylen & 0xff; - txh->FragPLCPFallback[5] = (phylen & 0xff00) >> 8; - } - - /* MIMO-RATE: need validation ?? */ - mainrates = is_ofdm_rate(rspec[0]) ? - D11A_PHY_HDR_GRATE((struct ofdm_phy_hdr *) plcp) : - plcp[0]; - - /* DUR field for main rate */ - if (!ieee80211_is_pspoll(h->frame_control) && - !is_multicast_ether_addr(h->addr1) && !use_rifs) { - durid = - brcms_c_compute_frame_dur(wlc, rspec[0], preamble_type[0], - next_frag_len); - h->duration_id = cpu_to_le16(durid); - } else if (use_rifs) { - /* NAV protect to end of next max packet size */ - durid = - (u16) brcms_c_calc_frame_time(wlc, rspec[0], - preamble_type[0], - DOT11_MAX_FRAG_LEN); - durid += RIFS_11N_TIME; - h->duration_id = cpu_to_le16(durid); - } - - /* DUR field for fallback rate */ - if (ieee80211_is_pspoll(h->frame_control)) - txh->FragDurFallback = h->duration_id; - else if (is_multicast_ether_addr(h->addr1) || use_rifs) - txh->FragDurFallback = 0; - else { - durid = brcms_c_compute_frame_dur(wlc, rspec[1], - preamble_type[1], next_frag_len); - txh->FragDurFallback = cpu_to_le16(durid); - } - - /* (4) MAC-HDR: MacTxControlLow */ - if (frag == 0) - mcl |= TXC_STARTMSDU; - - if (!is_multicast_ether_addr(h->addr1)) - mcl |= TXC_IMMEDACK; - - if (wlc->band->bandtype == BRCM_BAND_5G) - mcl |= TXC_FREQBAND_5G; - - if (CHSPEC_IS40(wlc_phy_chanspec_get(wlc->band->pi))) - mcl |= TXC_BW_40; - - /* set AMIC bit if using hardware TKIP MIC */ - if (hwtkmic) - mcl |= TXC_AMIC; - - txh->MacTxControlLow = cpu_to_le16(mcl); - - /* MacTxControlHigh */ - mch = 0; - - /* Set fallback rate preamble type */ - if ((preamble_type[1] == BRCMS_SHORT_PREAMBLE) || - (preamble_type[1] == BRCMS_GF_PREAMBLE)) { - if (rspec2rate(rspec[1]) != BRCM_RATE_1M) - mch |= TXC_PREAMBLE_DATA_FB_SHORT; - } - - /* MacFrameControl */ - memcpy(&txh->MacFrameControl, &h->frame_control, sizeof(u16)); - txh->TxFesTimeNormal = cpu_to_le16(0); - - txh->TxFesTimeFallback = cpu_to_le16(0); - - /* TxFrameRA */ - memcpy(&txh->TxFrameRA, &h->addr1, ETH_ALEN); - - /* TxFrameID */ - txh->TxFrameID = cpu_to_le16(frameid); - - /* - * TxStatus, Note the case of recreating the first frag of a suppressed - * frame then we may need to reset the retry cnt's via the status reg - */ - txh->TxStatus = cpu_to_le16(status); - - /* - * extra fields for ucode AMPDU aggregation, the new fields are added to - * the END of previous structure so that it's compatible in driver. - */ - txh->MaxNMpdus = cpu_to_le16(0); - txh->MaxABytes_MRT = cpu_to_le16(0); - txh->MaxABytes_FBR = cpu_to_le16(0); - txh->MinMBytes = cpu_to_le16(0); - - /* (5) RTS/CTS: determine RTS/CTS PLCP header and MAC duration, - * furnish struct d11txh */ - /* RTS PLCP header and RTS frame */ - if (use_rts || use_cts) { - if (use_rts && use_cts) - use_cts = false; - - for (k = 0; k < 2; k++) { - rts_rspec[k] = brcms_c_rspec_to_rts_rspec(wlc, rspec[k], - false, - mimo_ctlchbw); - } - - if (!is_ofdm_rate(rts_rspec[0]) && - !((rspec2rate(rts_rspec[0]) == BRCM_RATE_1M) || - (wlc->PLCPHdr_override == BRCMS_PLCP_LONG))) { - rts_preamble_type[0] = BRCMS_SHORT_PREAMBLE; - mch |= TXC_PREAMBLE_RTS_MAIN_SHORT; - } - - if (!is_ofdm_rate(rts_rspec[1]) && - !((rspec2rate(rts_rspec[1]) == BRCM_RATE_1M) || - (wlc->PLCPHdr_override == BRCMS_PLCP_LONG))) { - rts_preamble_type[1] = BRCMS_SHORT_PREAMBLE; - mch |= TXC_PREAMBLE_RTS_FB_SHORT; - } - - /* RTS/CTS additions to MacTxControlLow */ - if (use_cts) { - txh->MacTxControlLow |= cpu_to_le16(TXC_SENDCTS); - } else { - txh->MacTxControlLow |= cpu_to_le16(TXC_SENDRTS); - txh->MacTxControlLow |= cpu_to_le16(TXC_LONGFRAME); - } - - /* RTS PLCP header */ - rts_plcp = txh->RTSPhyHeader; - if (use_cts) - rts_phylen = DOT11_CTS_LEN + FCS_LEN; - else - rts_phylen = DOT11_RTS_LEN + FCS_LEN; - - brcms_c_compute_plcp(wlc, rts_rspec[0], rts_phylen, rts_plcp); - - /* fallback rate version of RTS PLCP header */ - brcms_c_compute_plcp(wlc, rts_rspec[1], rts_phylen, - rts_plcp_fallback); - memcpy(&txh->RTSPLCPFallback, rts_plcp_fallback, - sizeof(txh->RTSPLCPFallback)); - - /* RTS frame fields... */ - rts = (struct ieee80211_rts *)&txh->rts_frame; - - durid = brcms_c_compute_rtscts_dur(wlc, use_cts, rts_rspec[0], - rspec[0], rts_preamble_type[0], - preamble_type[0], phylen, false); - rts->duration = cpu_to_le16(durid); - /* fallback rate version of RTS DUR field */ - durid = brcms_c_compute_rtscts_dur(wlc, use_cts, - rts_rspec[1], rspec[1], - rts_preamble_type[1], - preamble_type[1], phylen, false); - txh->RTSDurFallback = cpu_to_le16(durid); - - if (use_cts) { - rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | - IEEE80211_STYPE_CTS); - - memcpy(&rts->ra, &h->addr2, ETH_ALEN); - } else { - rts->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | - IEEE80211_STYPE_RTS); - - memcpy(&rts->ra, &h->addr1, 2 * ETH_ALEN); - } - - /* mainrate - * low 8 bits: main frag rate/mcs, - * high 8 bits: rts/cts rate/mcs - */ - mainrates |= (is_ofdm_rate(rts_rspec[0]) ? - D11A_PHY_HDR_GRATE( - (struct ofdm_phy_hdr *) rts_plcp) : - rts_plcp[0]) << 8; - } else { - memset(txh->RTSPhyHeader, 0, D11_PHY_HDR_LEN); - memset(&txh->rts_frame, 0, sizeof(struct ieee80211_rts)); - memset(txh->RTSPLCPFallback, 0, sizeof(txh->RTSPLCPFallback)); - txh->RTSDurFallback = 0; - } - -#ifdef SUPPORT_40MHZ - /* add null delimiter count */ - if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && is_mcs_rate(rspec)) - txh->RTSPLCPFallback[AMPDU_FBR_NULL_DELIM] = - brcm_c_ampdu_null_delim_cnt(wlc->ampdu, scb, rspec, phylen); - -#endif - - /* - * Now that RTS/RTS FB preamble types are updated, write - * the final value - */ - txh->MacTxControlHigh = cpu_to_le16(mch); - - /* - * MainRates (both the rts and frag plcp rates have - * been calculated now) - */ - txh->MainRates = cpu_to_le16(mainrates); - - /* XtraFrameTypes */ - xfts = frametype(rspec[1], wlc->mimoft); - xfts |= (frametype(rts_rspec[0], wlc->mimoft) << XFTS_RTS_FT_SHIFT); - xfts |= (frametype(rts_rspec[1], wlc->mimoft) << XFTS_FBRRTS_FT_SHIFT); - xfts |= CHSPEC_CHANNEL(wlc_phy_chanspec_get(wlc->band->pi)) << - XFTS_CHANNEL_SHIFT; - txh->XtraFrameTypes = cpu_to_le16(xfts); - - /* PhyTxControlWord */ - phyctl = frametype(rspec[0], wlc->mimoft); - if ((preamble_type[0] == BRCMS_SHORT_PREAMBLE) || - (preamble_type[0] == BRCMS_GF_PREAMBLE)) { - if (rspec2rate(rspec[0]) != BRCM_RATE_1M) - phyctl |= PHY_TXC_SHORT_HDR; - } - - /* phytxant is properly bit shifted */ - phyctl |= brcms_c_stf_d11hdrs_phyctl_txant(wlc, rspec[0]); - txh->PhyTxControlWord = cpu_to_le16(phyctl); - - /* PhyTxControlWord_1 */ - if (BRCMS_PHY_11N_CAP(wlc->band)) { - u16 phyctl1 = 0; - - phyctl1 = brcms_c_phytxctl1_calc(wlc, rspec[0]); - txh->PhyTxControlWord_1 = cpu_to_le16(phyctl1); - phyctl1 = brcms_c_phytxctl1_calc(wlc, rspec[1]); - txh->PhyTxControlWord_1_Fbr = cpu_to_le16(phyctl1); - - if (use_rts || use_cts) { - phyctl1 = brcms_c_phytxctl1_calc(wlc, rts_rspec[0]); - txh->PhyTxControlWord_1_Rts = cpu_to_le16(phyctl1); - phyctl1 = brcms_c_phytxctl1_calc(wlc, rts_rspec[1]); - txh->PhyTxControlWord_1_FbrRts = cpu_to_le16(phyctl1); - } - - /* - * For mcs frames, if mixedmode(overloaded with long preamble) - * is going to be set, fill in non-zero MModeLen and/or - * MModeFbrLen it will be unnecessary if they are separated - */ - if (is_mcs_rate(rspec[0]) && - (preamble_type[0] == BRCMS_MM_PREAMBLE)) { - u16 mmodelen = - brcms_c_calc_lsig_len(wlc, rspec[0], phylen); - txh->MModeLen = cpu_to_le16(mmodelen); - } - - if (is_mcs_rate(rspec[1]) && - (preamble_type[1] == BRCMS_MM_PREAMBLE)) { - u16 mmodefbrlen = - brcms_c_calc_lsig_len(wlc, rspec[1], phylen); - txh->MModeFbrLen = cpu_to_le16(mmodefbrlen); - } - } - - ac = skb_get_queue_mapping(p); - if ((scb->flags & SCB_WMECAP) && qos && wlc->edcf_txop[ac]) { - uint frag_dur, dur, dur_fallback; - - /* WME: Update TXOP threshold */ - if (!(tx_info->flags & IEEE80211_TX_CTL_AMPDU) && frag == 0) { - frag_dur = - brcms_c_calc_frame_time(wlc, rspec[0], - preamble_type[0], phylen); - - if (rts) { - /* 1 RTS or CTS-to-self frame */ - dur = - brcms_c_calc_cts_time(wlc, rts_rspec[0], - rts_preamble_type[0]); - dur_fallback = - brcms_c_calc_cts_time(wlc, rts_rspec[1], - rts_preamble_type[1]); - /* (SIFS + CTS) + SIFS + frame + SIFS + ACK */ - dur += le16_to_cpu(rts->duration); - dur_fallback += - le16_to_cpu(txh->RTSDurFallback); - } else if (use_rifs) { - dur = frag_dur; - dur_fallback = 0; - } else { - /* frame + SIFS + ACK */ - dur = frag_dur; - dur += - brcms_c_compute_frame_dur(wlc, rspec[0], - preamble_type[0], 0); - - dur_fallback = - brcms_c_calc_frame_time(wlc, rspec[1], - preamble_type[1], - phylen); - dur_fallback += - brcms_c_compute_frame_dur(wlc, rspec[1], - preamble_type[1], 0); - } - /* NEED to set TxFesTimeNormal (hard) */ - txh->TxFesTimeNormal = cpu_to_le16((u16) dur); - /* - * NEED to set fallback rate version of - * TxFesTimeNormal (hard) - */ - txh->TxFesTimeFallback = - cpu_to_le16((u16) dur_fallback); - - /* - * update txop byte threshold (txop minus intraframe - * overhead) - */ - if (wlc->edcf_txop[ac] >= (dur - frag_dur)) { - uint newfragthresh; - - newfragthresh = - brcms_c_calc_frame_len(wlc, - rspec[0], preamble_type[0], - (wlc->edcf_txop[ac] - - (dur - frag_dur))); - /* range bound the fragthreshold */ - if (newfragthresh < DOT11_MIN_FRAG_LEN) - newfragthresh = - DOT11_MIN_FRAG_LEN; - else if (newfragthresh > - wlc->usr_fragthresh) - newfragthresh = - wlc->usr_fragthresh; - /* update the fragthresh and do txc update */ - if (wlc->fragthresh[queue] != - (u16) newfragthresh) - wlc->fragthresh[queue] = - (u16) newfragthresh; - } else { - brcms_warn(wlc->hw->d11core, - "wl%d: %s txop invalid for rate %d\n", - wlc->pub->unit, fifo_names[queue], - rspec2rate(rspec[0])); - } - - if (dur > wlc->edcf_txop[ac]) - brcms_warn(wlc->hw->d11core, - "wl%d: %s: %s txop exceeded phylen %d/%d dur %d/%d\n", - wlc->pub->unit, __func__, - fifo_names[queue], - phylen, wlc->fragthresh[queue], - dur, wlc->edcf_txop[ac]); - } - } - - return 0; -} - -static int brcms_c_tx(struct brcms_c_info *wlc, struct sk_buff *skb) -{ - struct dma_pub *dma; - int fifo, ret = -ENOSPC; - struct d11txh *txh; - u16 frameid = INVALIDFID; - - fifo = brcms_ac_to_fifo(skb_get_queue_mapping(skb)); - dma = wlc->hw->di[fifo]; - txh = (struct d11txh *)(skb->data); - - if (dma->txavail == 0) { - /* - * We sometimes get a frame from mac80211 after stopping - * the queues. This only ever seems to be a single frame - * and is seems likely to be a race. TX_HEADROOM should - * ensure that we have enough space to handle these stray - * packets, so warn if there isn't. If we're out of space - * in the tx ring and the tx queue isn't stopped then - * we've really got a bug; warn loudly if that happens. - */ - brcms_warn(wlc->hw->d11core, - "Received frame for tx with no space in DMA ring\n"); - WARN_ON(!ieee80211_queue_stopped(wlc->pub->ieee_hw, - skb_get_queue_mapping(skb))); - return -ENOSPC; - } - - /* When a BC/MC frame is being committed to the BCMC fifo - * via DMA (NOT PIO), update ucode or BSS info as appropriate. - */ - if (fifo == TX_BCMC_FIFO) - frameid = le16_to_cpu(txh->TxFrameID); - - /* Commit BCMC sequence number in the SHM frame ID location */ - if (frameid != INVALIDFID) { - /* - * To inform the ucode of the last mcast frame posted - * so that it can clear moredata bit - */ - brcms_b_write_shm(wlc->hw, M_BCMC_FID, frameid); - } - - ret = brcms_c_txfifo(wlc, fifo, skb); - /* - * The only reason for brcms_c_txfifo to fail is because - * there weren't any DMA descriptors, but we've already - * checked for that. So if it does fail yell loudly. - */ - WARN_ON_ONCE(ret); - - return ret; -} - -bool brcms_c_sendpkt_mac80211(struct brcms_c_info *wlc, struct sk_buff *sdu, - struct ieee80211_hw *hw) -{ - uint fifo; - struct scb *scb = &wlc->pri_scb; - - fifo = brcms_ac_to_fifo(skb_get_queue_mapping(sdu)); - brcms_c_d11hdrs_mac80211(wlc, hw, sdu, scb, 0, 1, fifo, 0); - if (!brcms_c_tx(wlc, sdu)) - return true; - - /* packet discarded */ - dev_kfree_skb_any(sdu); - return false; -} - -int -brcms_c_txfifo(struct brcms_c_info *wlc, uint fifo, struct sk_buff *p) -{ - struct dma_pub *dma = wlc->hw->di[fifo]; - int ret; - u16 queue; - - ret = dma_txfast(wlc, dma, p); - if (ret < 0) - wiphy_err(wlc->wiphy, "txfifo: fatal, toss frames !!!\n"); - - /* - * Stop queue if DMA ring is full. Reserve some free descriptors, - * as we sometimes receive a frame from mac80211 after the queues - * are stopped. - */ - queue = skb_get_queue_mapping(p); - if (dma->txavail <= TX_HEADROOM && fifo < TX_BCMC_FIFO && - !ieee80211_queue_stopped(wlc->pub->ieee_hw, queue)) - ieee80211_stop_queue(wlc->pub->ieee_hw, queue); - - return ret; -} - -u32 -brcms_c_rspec_to_rts_rspec(struct brcms_c_info *wlc, u32 rspec, - bool use_rspec, u16 mimo_ctlchbw) -{ - u32 rts_rspec = 0; - - if (use_rspec) - /* use frame rate as rts rate */ - rts_rspec = rspec; - else if (wlc->band->gmode && wlc->protection->_g && !is_cck_rate(rspec)) - /* Use 11Mbps as the g protection RTS target rate and fallback. - * Use the brcms_basic_rate() lookup to find the best basic rate - * under the target in case 11 Mbps is not Basic. - * 6 and 9 Mbps are not usually selected by rate selection, but - * even if the OFDM rate we are protecting is 6 or 9 Mbps, 11 - * is more robust. - */ - rts_rspec = brcms_basic_rate(wlc, BRCM_RATE_11M); - else - /* calculate RTS rate and fallback rate based on the frame rate - * RTS must be sent at a basic rate since it is a - * control frame, sec 9.6 of 802.11 spec - */ - rts_rspec = brcms_basic_rate(wlc, rspec); - - if (BRCMS_PHY_11N_CAP(wlc->band)) { - /* set rts txbw to correct side band */ - rts_rspec &= ~RSPEC_BW_MASK; - - /* - * if rspec/rspec_fallback is 40MHz, then send RTS on both - * 20MHz channel (DUP), otherwise send RTS on control channel - */ - if (rspec_is40mhz(rspec) && !is_cck_rate(rts_rspec)) - rts_rspec |= (PHY_TXC1_BW_40MHZ_DUP << RSPEC_BW_SHIFT); - else - rts_rspec |= (mimo_ctlchbw << RSPEC_BW_SHIFT); - - /* pick siso/cdd as default for ofdm */ - if (is_ofdm_rate(rts_rspec)) { - rts_rspec &= ~RSPEC_STF_MASK; - rts_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT); - } - } - return rts_rspec; -} - -/* Update beacon listen interval in shared memory */ -static void brcms_c_bcn_li_upd(struct brcms_c_info *wlc) -{ - /* wake up every DTIM is the default */ - if (wlc->bcn_li_dtim == 1) - brcms_b_write_shm(wlc->hw, M_BCN_LI, 0); - else - brcms_b_write_shm(wlc->hw, M_BCN_LI, - (wlc->bcn_li_dtim << 8) | wlc->bcn_li_bcn); -} - -static void -brcms_b_read_tsf(struct brcms_hardware *wlc_hw, u32 *tsf_l_ptr, - u32 *tsf_h_ptr) -{ - struct bcma_device *core = wlc_hw->d11core; - - /* read the tsf timer low, then high to get an atomic read */ - *tsf_l_ptr = bcma_read32(core, D11REGOFFS(tsf_timerlow)); - *tsf_h_ptr = bcma_read32(core, D11REGOFFS(tsf_timerhigh)); -} - -/* - * recover 64bit TSF value from the 16bit TSF value in the rx header - * given the assumption that the TSF passed in header is within 65ms - * of the current tsf. - * - * 6 5 4 4 3 2 1 - * 3.......6.......8.......0.......2.......4.......6.......8......0 - * |<---------- tsf_h ----------->||<--- tsf_l -->||<-RxTSFTime ->| - * - * The RxTSFTime are the lowest 16 bits and provided by the ucode. The - * tsf_l is filled in by brcms_b_recv, which is done earlier in the - * receive call sequence after rx interrupt. Only the higher 16 bits - * are used. Finally, the tsf_h is read from the tsf register. - */ -static u64 brcms_c_recover_tsf64(struct brcms_c_info *wlc, - struct d11rxhdr *rxh) -{ - u32 tsf_h, tsf_l; - u16 rx_tsf_0_15, rx_tsf_16_31; - - brcms_b_read_tsf(wlc->hw, &tsf_l, &tsf_h); - - rx_tsf_16_31 = (u16)(tsf_l >> 16); - rx_tsf_0_15 = rxh->RxTSFTime; - - /* - * a greater tsf time indicates the low 16 bits of - * tsf_l wrapped, so decrement the high 16 bits. - */ - if ((u16)tsf_l < rx_tsf_0_15) { - rx_tsf_16_31 -= 1; - if (rx_tsf_16_31 == 0xffff) - tsf_h -= 1; - } - - return ((u64)tsf_h << 32) | (((u32)rx_tsf_16_31 << 16) + rx_tsf_0_15); -} - -static void -prep_mac80211_status(struct brcms_c_info *wlc, struct d11rxhdr *rxh, - struct sk_buff *p, - struct ieee80211_rx_status *rx_status) -{ - int channel; - u32 rspec; - unsigned char *plcp; - - /* fill in TSF and flag its presence */ - rx_status->mactime = brcms_c_recover_tsf64(wlc, rxh); - rx_status->flag |= RX_FLAG_MACTIME_START; - - channel = BRCMS_CHAN_CHANNEL(rxh->RxChan); - - rx_status->band = - channel > 14 ? IEEE80211_BAND_5GHZ : IEEE80211_BAND_2GHZ; - rx_status->freq = - ieee80211_channel_to_frequency(channel, rx_status->band); - - rx_status->signal = wlc_phy_rssi_compute(wlc->hw->band->pi, rxh); - - /* noise */ - /* qual */ - rx_status->antenna = - (rxh->PhyRxStatus_0 & PRXS0_RXANT_UPSUBBAND) ? 1 : 0; - - plcp = p->data; - - rspec = brcms_c_compute_rspec(rxh, plcp); - if (is_mcs_rate(rspec)) { - rx_status->rate_idx = rspec & RSPEC_RATE_MASK; - rx_status->flag |= RX_FLAG_HT; - if (rspec_is40mhz(rspec)) - rx_status->flag |= RX_FLAG_40MHZ; - } else { - switch (rspec2rate(rspec)) { - case BRCM_RATE_1M: - rx_status->rate_idx = 0; - break; - case BRCM_RATE_2M: - rx_status->rate_idx = 1; - break; - case BRCM_RATE_5M5: - rx_status->rate_idx = 2; - break; - case BRCM_RATE_11M: - rx_status->rate_idx = 3; - break; - case BRCM_RATE_6M: - rx_status->rate_idx = 4; - break; - case BRCM_RATE_9M: - rx_status->rate_idx = 5; - break; - case BRCM_RATE_12M: - rx_status->rate_idx = 6; - break; - case BRCM_RATE_18M: - rx_status->rate_idx = 7; - break; - case BRCM_RATE_24M: - rx_status->rate_idx = 8; - break; - case BRCM_RATE_36M: - rx_status->rate_idx = 9; - break; - case BRCM_RATE_48M: - rx_status->rate_idx = 10; - break; - case BRCM_RATE_54M: - rx_status->rate_idx = 11; - break; - default: - brcms_err(wlc->hw->d11core, - "%s: Unknown rate\n", __func__); - } - - /* - * For 5GHz, we should decrease the index as it is - * a subset of the 2.4G rates. See bitrates field - * of brcms_band_5GHz_nphy (in mac80211_if.c). - */ - if (rx_status->band == IEEE80211_BAND_5GHZ) - rx_status->rate_idx -= BRCMS_LEGACY_5G_RATE_OFFSET; - - /* Determine short preamble and rate_idx */ - if (is_cck_rate(rspec)) { - if (rxh->PhyRxStatus_0 & PRXS0_SHORTH) - rx_status->flag |= RX_FLAG_SHORTPRE; - } else if (is_ofdm_rate(rspec)) { - rx_status->flag |= RX_FLAG_SHORTPRE; - } else { - brcms_err(wlc->hw->d11core, "%s: Unknown modulation\n", - __func__); - } - } - - if (plcp3_issgi(plcp[3])) - rx_status->flag |= RX_FLAG_SHORT_GI; - - if (rxh->RxStatus1 & RXS_DECERR) { - rx_status->flag |= RX_FLAG_FAILED_PLCP_CRC; - brcms_err(wlc->hw->d11core, "%s: RX_FLAG_FAILED_PLCP_CRC\n", - __func__); - } - if (rxh->RxStatus1 & RXS_FCSERR) { - rx_status->flag |= RX_FLAG_FAILED_FCS_CRC; - brcms_err(wlc->hw->d11core, "%s: RX_FLAG_FAILED_FCS_CRC\n", - __func__); - } -} - -static void -brcms_c_recvctl(struct brcms_c_info *wlc, struct d11rxhdr *rxh, - struct sk_buff *p) -{ - int len_mpdu; - struct ieee80211_rx_status rx_status; - struct ieee80211_hdr *hdr; - - memset(&rx_status, 0, sizeof(rx_status)); - prep_mac80211_status(wlc, rxh, p, &rx_status); - - /* mac header+body length, exclude CRC and plcp header */ - len_mpdu = p->len - D11_PHY_HDR_LEN - FCS_LEN; - skb_pull(p, D11_PHY_HDR_LEN); - __skb_trim(p, len_mpdu); - - /* unmute transmit */ - if (wlc->hw->suspended_fifos) { - hdr = (struct ieee80211_hdr *)p->data; - if (ieee80211_is_beacon(hdr->frame_control)) - brcms_b_mute(wlc->hw, false); - } - - memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status)); - ieee80211_rx_irqsafe(wlc->pub->ieee_hw, p); -} - -/* calculate frame duration for Mixed-mode L-SIG spoofing, return - * number of bytes goes in the length field - * - * Formula given by HT PHY Spec v 1.13 - * len = 3(nsyms + nstream + 3) - 3 - */ -u16 -brcms_c_calc_lsig_len(struct brcms_c_info *wlc, u32 ratespec, - uint mac_len) -{ - uint nsyms, len = 0, kNdps; - - if (is_mcs_rate(ratespec)) { - uint mcs = ratespec & RSPEC_RATE_MASK; - int tot_streams = (mcs_2_txstreams(mcs) + 1) + - rspec_stc(ratespec); - - /* - * the payload duration calculation matches that - * of regular ofdm - */ - /* 1000Ndbps = kbps * 4 */ - kNdps = mcs_2_rate(mcs, rspec_is40mhz(ratespec), - rspec_issgi(ratespec)) * 4; - - if (rspec_stc(ratespec) == 0) - nsyms = - CEIL((APHY_SERVICE_NBITS + 8 * mac_len + - APHY_TAIL_NBITS) * 1000, kNdps); - else - /* STBC needs to have even number of symbols */ - nsyms = - 2 * - CEIL((APHY_SERVICE_NBITS + 8 * mac_len + - APHY_TAIL_NBITS) * 1000, 2 * kNdps); - - /* (+3) account for HT-SIG(2) and HT-STF(1) */ - nsyms += (tot_streams + 3); - /* - * 3 bytes/symbol @ legacy 6Mbps rate - * (-3) excluding service bits and tail bits - */ - len = (3 * nsyms) - 3; - } - - return (u16) len; -} - -static void -brcms_c_mod_prb_rsp_rate_table(struct brcms_c_info *wlc, uint frame_len) -{ - const struct brcms_c_rateset *rs_dflt; - struct brcms_c_rateset rs; - u8 rate; - u16 entry_ptr; - u8 plcp[D11_PHY_HDR_LEN]; - u16 dur, sifs; - uint i; - - sifs = get_sifs(wlc->band); - - rs_dflt = brcms_c_rateset_get_hwrs(wlc); - - brcms_c_rateset_copy(rs_dflt, &rs); - brcms_c_rateset_mcs_upd(&rs, wlc->stf->txstreams); - - /* - * walk the phy rate table and update MAC core SHM - * basic rate table entries - */ - for (i = 0; i < rs.count; i++) { - rate = rs.rates[i] & BRCMS_RATE_MASK; - - entry_ptr = brcms_b_rate_shm_offset(wlc->hw, rate); - - /* Calculate the Probe Response PLCP for the given rate */ - brcms_c_compute_plcp(wlc, rate, frame_len, plcp); - - /* - * Calculate the duration of the Probe Response - * frame plus SIFS for the MAC - */ - dur = (u16) brcms_c_calc_frame_time(wlc, rate, - BRCMS_LONG_PREAMBLE, frame_len); - dur += sifs; - - /* Update the SHM Rate Table entry Probe Response values */ - brcms_b_write_shm(wlc->hw, entry_ptr + M_RT_PRS_PLCP_POS, - (u16) (plcp[0] + (plcp[1] << 8))); - brcms_b_write_shm(wlc->hw, entry_ptr + M_RT_PRS_PLCP_POS + 2, - (u16) (plcp[2] + (plcp[3] << 8))); - brcms_b_write_shm(wlc->hw, entry_ptr + M_RT_PRS_DUR_POS, dur); - } -} - -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. - */ -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)) { - /* 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 */ -static void -brcms_c_shm_ssid_upd(struct brcms_c_info *wlc, struct brcms_bss_cfg *cfg) -{ - u8 *ssidptr = cfg->SSID; - u16 base = M_SSID; - u8 ssidbuf[IEEE80211_MAX_SSID_LEN]; - - /* padding the ssid with zero and copy it into shm */ - memset(ssidbuf, 0, IEEE80211_MAX_SSID_LEN); - memcpy(ssidbuf, ssidptr, cfg->SSID_len); - - brcms_c_copyto_shm(wlc, base, ssidbuf, IEEE80211_MAX_SSID_LEN); - brcms_b_write_shm(wlc->hw, M_SSIDLEN, (u16) cfg->SSID_len); -} - -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) -{ - int 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, 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); - - /* write the SSID and SSID length */ - brcms_c_shm_ssid_upd(wlc, cfg); - - /* - * Write PLCP headers and durations for probe response frames - * at all rates. Use the actual frame length covered by the - * PLCP header for the call to brcms_c_mod_prb_rsp_rate_table() - * by subtracting the PLCP len and adding the FCS. - */ - brcms_c_mod_prb_rsp_rate_table(wlc, - (u16)len + FCS_LEN - D11_PHY_HDR_LEN); - - if (suspend) - brcms_c_enable_mac(wlc); -} - -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 (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, - uint *blocks) -{ - if (fifo >= NFIFO) - return -EINVAL; - - *blocks = wlc_hw->xmtfifo_sz[fifo]; - - return 0; -} - -void -brcms_c_set_addrmatch(struct brcms_c_info *wlc, int match_reg_offset, - const u8 *addr) -{ - brcms_b_set_addrmatch(wlc->hw, match_reg_offset, addr); - if (match_reg_offset == RCM_BSSID_OFFSET) - memcpy(wlc->bsscfg->BSSID, addr, ETH_ALEN); -} - -/* - * Flag 'scan in progress' to withhold dynamic phy calibration - */ -void brcms_c_scan_start(struct brcms_c_info *wlc) -{ - wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, true); -} - -void brcms_c_scan_stop(struct brcms_c_info *wlc) -{ - wlc_phy_hold_upd(wlc->band->pi, PHY_HOLD_FOR_SCAN, false); -} - -void brcms_c_associate_upd(struct brcms_c_info *wlc, bool state) -{ - wlc->pub->associated = state; -} - -/* - * When a remote STA/AP is removed by Mac80211, or when it can no longer accept - * AMPDU traffic, packets pending in hardware have to be invalidated so that - * when later on hardware releases them, they can be handled appropriately. - */ -void brcms_c_inval_dma_pkts(struct brcms_hardware *hw, - struct ieee80211_sta *sta, - void (*dma_callback_fn)) -{ - struct dma_pub *dmah; - int i; - for (i = 0; i < NFIFO; i++) { - dmah = hw->di[i]; - if (dmah != NULL) - dma_walk_packets(dmah, dma_callback_fn, sta); - } -} - -int brcms_c_get_curband(struct brcms_c_info *wlc) -{ - return wlc->band->bandunit; -} - -bool brcms_c_tx_flush_completed(struct brcms_c_info *wlc) -{ - int i; - - /* Kick DMA to send any pending AMPDU */ - for (i = 0; i < ARRAY_SIZE(wlc->hw->di); i++) - if (wlc->hw->di[i]) - dma_kick_tx(wlc->hw->di[i]); - - return !brcms_txpktpendtot(wlc); -} - -void brcms_c_set_beacon_listen_interval(struct brcms_c_info *wlc, u8 interval) -{ - wlc->bcn_li_bcn = interval; - if (wlc->pub->up) - 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; - - /* Remove override bit and clip to max qdbm value */ - qdbm = min_t(uint, txpwr * BRCMS_TXPWR_DB_FACTOR, 0xff); - return wlc_phy_txpower_set(wlc->band->pi, qdbm, false); -} - -int brcms_c_get_tx_power(struct brcms_c_info *wlc) -{ - uint qdbm; - bool override; - - wlc_phy_txpower_get(wlc->band->pi, &qdbm, &override); - - /* Return qdbm units */ - return (int)(qdbm / BRCMS_TXPWR_DB_FACTOR); -} - -/* Process received frames */ -/* - * Return true if more frames need to be processed. false otherwise. - * Param 'bound' indicates max. # frames to process before break out. - */ -static void brcms_c_recv(struct brcms_c_info *wlc, struct sk_buff *p) -{ - struct d11rxhdr *rxh; - struct ieee80211_hdr *h; - uint len; - bool is_amsdu; - - /* frame starts with rxhdr */ - rxh = (struct d11rxhdr *) (p->data); - - /* strip off rxhdr */ - skb_pull(p, BRCMS_HWRXOFF); - - /* MAC inserts 2 pad bytes for a4 headers or QoS or A-MSDU subframes */ - if (rxh->RxStatus1 & RXS_PBPRES) { - if (p->len < 2) { - brcms_err(wlc->hw->d11core, - "wl%d: recv: rcvd runt of len %d\n", - wlc->pub->unit, p->len); - goto toss; - } - skb_pull(p, 2); - } - - h = (struct ieee80211_hdr *)(p->data + D11_PHY_HDR_LEN); - len = p->len; - - if (rxh->RxStatus1 & RXS_FCSERR) { - if (!(wlc->filter_flags & FIF_FCSFAIL)) - goto toss; - } - - /* check received pkt has at least frame control field */ - if (len < D11_PHY_HDR_LEN + sizeof(h->frame_control)) - goto toss; - - /* not supporting A-MSDU */ - is_amsdu = rxh->RxStatus2 & RXS_AMSDU_MASK; - if (is_amsdu) - goto toss; - - brcms_c_recvctl(wlc, rxh, p); - return; - - toss: - brcmu_pkt_buf_free_skb(p); -} - -/* Process received frames */ -/* - * Return true if more frames need to be processed. false otherwise. - * Param 'bound' indicates max. # frames to process before break out. - */ -static bool -brcms_b_recv(struct brcms_hardware *wlc_hw, uint fifo, bool bound) -{ - struct sk_buff *p; - struct sk_buff *next = NULL; - struct sk_buff_head recv_frames; - - uint n = 0; - uint bound_limit = bound ? RXBND : -1; - bool morepending = false; - - skb_queue_head_init(&recv_frames); - - /* gather received frames */ - do { - /* !give others some time to run! */ - if (n >= bound_limit) - break; - - morepending = dma_rx(wlc_hw->di[fifo], &recv_frames); - n++; - } while (morepending); - - /* post more rbufs */ - dma_rxfill(wlc_hw->di[fifo]); - - /* process each frame */ - skb_queue_walk_safe(&recv_frames, p, next) { - struct d11rxhdr_le *rxh_le; - struct d11rxhdr *rxh; - - skb_unlink(p, &recv_frames); - rxh_le = (struct d11rxhdr_le *)p->data; - rxh = (struct d11rxhdr *)p->data; - - /* fixup rx header endianness */ - rxh->RxFrameSize = le16_to_cpu(rxh_le->RxFrameSize); - rxh->PhyRxStatus_0 = le16_to_cpu(rxh_le->PhyRxStatus_0); - rxh->PhyRxStatus_1 = le16_to_cpu(rxh_le->PhyRxStatus_1); - rxh->PhyRxStatus_2 = le16_to_cpu(rxh_le->PhyRxStatus_2); - rxh->PhyRxStatus_3 = le16_to_cpu(rxh_le->PhyRxStatus_3); - rxh->PhyRxStatus_4 = le16_to_cpu(rxh_le->PhyRxStatus_4); - rxh->PhyRxStatus_5 = le16_to_cpu(rxh_le->PhyRxStatus_5); - rxh->RxStatus1 = le16_to_cpu(rxh_le->RxStatus1); - rxh->RxStatus2 = le16_to_cpu(rxh_le->RxStatus2); - rxh->RxTSFTime = le16_to_cpu(rxh_le->RxTSFTime); - rxh->RxChan = le16_to_cpu(rxh_le->RxChan); - - brcms_c_recv(wlc_hw->wlc, p); - } - - return morepending; -} - -/* second-level interrupt processing - * Return true if another dpc needs to be re-scheduled. false otherwise. - * Param 'bounded' indicates if applicable loops should be bounded. - */ -bool brcms_c_dpc(struct brcms_c_info *wlc, bool bounded) -{ - u32 macintstatus; - struct brcms_hardware *wlc_hw = wlc->hw; - struct bcma_device *core = wlc_hw->d11core; - - if (brcms_deviceremoved(wlc)) { - brcms_err(core, "wl%d: %s: dead chip\n", wlc_hw->unit, - __func__); - brcms_down(wlc->wl); - return false; - } - - /* grab and clear the saved software intstatus bits */ - macintstatus = wlc->macintstatus; - wlc->macintstatus = 0; - - brcms_dbg_int(core, "wl%d: macintstatus 0x%x\n", - wlc_hw->unit, macintstatus); - - WARN_ON(macintstatus & MI_PRQ); /* PRQ Interrupt in non-MBSS */ - - /* tx status */ - if (macintstatus & MI_TFS) { - bool fatal; - if (brcms_b_txstatus(wlc->hw, bounded, &fatal)) - wlc->macintstatus |= MI_TFS; - if (fatal) { - brcms_err(core, "MI_TFS: fatal\n"); - goto fatal; - } - } - - if (macintstatus & (MI_TBTT | MI_DTIM_TBTT)) - brcms_c_tbtt(wlc); - - /* ATIM window end */ - if (macintstatus & MI_ATIMWINEND) { - brcms_dbg_info(core, "end of ATIM window\n"); - bcma_set32(core, D11REGOFFS(maccommand), wlc->qvalid); - wlc->qvalid = 0; - } - - /* - * received data or control frame, MI_DMAINT is - * indication of RX_FIFO interrupt - */ - if (macintstatus & MI_DMAINT) - if (brcms_b_recv(wlc_hw, RX_FIFO, bounded)) - wlc->macintstatus |= MI_DMAINT; - - /* noise sample collected */ - if (macintstatus & MI_BG_NOISE) - wlc_phy_noise_sample_intr(wlc_hw->band->pi); - - if (macintstatus & MI_GP0) { - brcms_err(core, "wl%d: PSM microcode watchdog fired at %d " - "(seconds). Resetting.\n", wlc_hw->unit, wlc_hw->now); - - printk_once("%s : PSM Watchdog, chipid 0x%x, chiprev 0x%x\n", - __func__, ai_get_chip_id(wlc_hw->sih), - ai_get_chiprev(wlc_hw->sih)); - brcms_fatal_error(wlc_hw->wlc->wl); - } - - /* gptimer timeout */ - if (macintstatus & MI_TO) - bcma_write32(core, D11REGOFFS(gptimer), 0); - - if (macintstatus & MI_RFDISABLE) { - brcms_dbg_info(core, "wl%d: BMAC Detected a change on the" - " RF Disable Input\n", wlc_hw->unit); - 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; - - fatal: - brcms_fatal_error(wlc_hw->wlc->wl); - return wlc->macintstatus != 0; -} - -void brcms_c_init(struct brcms_c_info *wlc, bool mute_tx) -{ - struct bcma_device *core = wlc->hw->d11core; - struct ieee80211_channel *ch = wlc->pub->ieee_hw->conf.chandef.chan; - u16 chanspec; - - brcms_dbg_info(core, "wl%d\n", wlc->pub->unit); - - chanspec = ch20mhz_chspec(ch->hw_value); - - brcms_b_init(wlc->hw, chanspec); - - /* update beacon listen interval */ - brcms_c_bcn_li_upd(wlc); - - /* write ethernet address to core */ - brcms_c_set_mac(wlc->bsscfg); - brcms_c_set_bssid(wlc->bsscfg); - - /* Update tsf_cfprep if associated and up */ - if (wlc->pub->associated && wlc->pub->up) { - u32 bi; - - /* get beacon period and convert to uS */ - bi = wlc->bsscfg->current_bss->beacon_period << 10; - /* - * update since init path would reset - * to default value - */ - bcma_write32(core, D11REGOFFS(tsf_cfprep), - bi << CFPREP_CBI_SHIFT); - - /* Update maccontrol PM related bits */ - brcms_c_set_ps_ctrl(wlc); - } - - brcms_c_bandinit_ordered(wlc, chanspec); - - /* init probe response timeout */ - brcms_b_write_shm(wlc->hw, M_PRS_MAXTIME, wlc->prb_resp_timeout); - - /* init max burst txop (framebursting) */ - brcms_b_write_shm(wlc->hw, M_MBURST_TXOP, - (wlc-> - _rifs ? (EDCF_AC_VO_TXOP_AP << 5) : MAXFRAMEBURST_TXOP)); - - /* initialize maximum allowed duty cycle */ - brcms_c_duty_cycle_set(wlc, wlc->tx_duty_cycle_ofdm, true, true); - brcms_c_duty_cycle_set(wlc, wlc->tx_duty_cycle_cck, false, true); - - /* - * Update some shared memory locations related to - * max AMPDU size allowed to received - */ - brcms_c_ampdu_shm_upd(wlc->ampdu); - - /* band-specific inits */ - brcms_c_bsinit(wlc); - - /* Enable EDCF mode (while the MAC is suspended) */ - bcma_set16(core, D11REGOFFS(ifs_ctl), IFS_USEEDCF); - brcms_c_edcf_setparams(wlc, false); - - /* read the ucode version if we have not yet done so */ - if (wlc->ucode_rev == 0) { - u16 rev; - u16 patch; - - rev = brcms_b_read_shm(wlc->hw, M_BOM_REV_MAJOR); - patch = brcms_b_read_shm(wlc->hw, M_BOM_REV_MINOR); - wlc->ucode_rev = (rev << NBITS(u16)) | patch; - snprintf(wlc->wiphy->fw_version, - sizeof(wlc->wiphy->fw_version), "%u.%u", rev, patch); - } - - /* ..now really unleash hell (allow the MAC out of suspend) */ - brcms_c_enable_mac(wlc); - - /* suspend the tx fifos and mute the phy for preism cac time */ - if (mute_tx) - brcms_b_mute(wlc->hw, true); - - /* enable the RF Disable Delay timer */ - bcma_write32(core, D11REGOFFS(rfdisabledly), RFDISABLE_DEFAULT); - - /* - * Initialize WME parameters; if they haven't been set by some other - * mechanism (IOVar, etc) then read them from the hardware. - */ - if (GFIELD(wlc->wme_retries[0], EDCF_SHORT) == 0) { - /* Uninitialized; read from HW */ - int ac; - - for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) - wlc->wme_retries[ac] = - brcms_b_read_shm(wlc->hw, M_AC_TXLMT_ADDR(ac)); - } -} - -/* - * The common driver entry routine. Error codes should be unique - */ -struct brcms_c_info * -brcms_c_attach(struct brcms_info *wl, struct bcma_device *core, uint unit, - bool piomode, uint *perr) -{ - struct brcms_c_info *wlc; - uint err = 0; - uint i, j; - struct brcms_pub *pub; - - /* allocate struct brcms_c_info state and its substructures */ - wlc = brcms_c_attach_malloc(unit, &err, 0); - if (wlc == NULL) - goto fail; - wlc->wiphy = wl->wiphy; - pub = wlc->pub; - -#if defined(DEBUG) - wlc_info_dbg = wlc; -#endif - - wlc->band = wlc->bandstate[0]; - wlc->core = wlc->corestate; - wlc->wl = wl; - 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); - - /* update sta/ap related parameters */ - brcms_c_ap_upd(wlc); - - /* - * low level attach steps(all hw accesses go - * inside, no more in rest of the attach) - */ - err = brcms_b_attach(wlc, core, unit, piomode); - if (err) - goto fail; - - brcms_c_protection_upd(wlc, BRCMS_PROT_N_PAM_OVR, OFF); - - pub->phy_11ncapable = BRCMS_PHY_11N_CAP(wlc->band); - - /* disable allowed duty cycle */ - wlc->tx_duty_cycle_ofdm = 0; - wlc->tx_duty_cycle_cck = 0; - - brcms_c_stf_phy_chain_calc(wlc); - - /* txchain 1: txant 0, txchain 2: txant 1 */ - if (BRCMS_ISNPHY(wlc->band) && (wlc->stf->txstreams == 1)) - wlc->stf->txant = wlc->stf->hw_txchain - 1; - - /* push to BMAC driver */ - wlc_phy_stf_chain_init(wlc->band->pi, wlc->stf->hw_txchain, - wlc->stf->hw_rxchain); - - /* pull up some info resulting from the low attach */ - for (i = 0; i < NFIFO; i++) - wlc->core->txavail[i] = wlc->hw->txavail[i]; - - memcpy(&wlc->perm_etheraddr, &wlc->hw->etheraddr, ETH_ALEN); - memcpy(&pub->cur_etheraddr, &wlc->hw->etheraddr, ETH_ALEN); - - for (j = 0; j < wlc->pub->_nbands; j++) { - wlc->band = wlc->bandstate[j]; - - if (!brcms_c_attach_stf_ant_init(wlc)) { - err = 24; - goto fail; - } - - /* default contention windows size limits */ - wlc->band->CWmin = APHY_CWMIN; - wlc->band->CWmax = PHY_CWMAX; - - /* init gmode value */ - if (wlc->band->bandtype == BRCM_BAND_2G) { - wlc->band->gmode = GMODE_AUTO; - brcms_c_protection_upd(wlc, BRCMS_PROT_G_USER, - wlc->band->gmode); - } - - /* init _n_enab supported mode */ - if (BRCMS_PHY_11N_CAP(wlc->band)) { - pub->_n_enab = SUPPORT_11N; - brcms_c_protection_upd(wlc, BRCMS_PROT_N_USER, - ((pub->_n_enab == - SUPPORT_11N) ? WL_11N_2x2 : - WL_11N_3x3)); - } - - /* init per-band default rateset, depend on band->gmode */ - brcms_default_rateset(wlc, &wlc->band->defrateset); - - /* fill in hw_rateset */ - brcms_c_rateset_filter(&wlc->band->defrateset, - &wlc->band->hw_rateset, false, - BRCMS_RATES_CCK_OFDM, BRCMS_RATE_MASK, - (bool) (wlc->pub->_n_enab & SUPPORT_11N)); - } - - /* - * update antenna config due to - * wlc->stf->txant/txchain/ant_rx_ovr change - */ - brcms_c_stf_phy_txant_upd(wlc); - - /* attach each modules */ - err = brcms_c_attach_module(wlc); - if (err != 0) - goto fail; - - if (!brcms_c_timers_init(wlc, unit)) { - wiphy_err(wl->wiphy, "wl%d: %s: init_timer failed\n", unit, - __func__); - err = 32; - goto fail; - } - - /* depend on rateset, gmode */ - wlc->cmi = brcms_c_channel_mgr_attach(wlc); - if (!wlc->cmi) { - wiphy_err(wl->wiphy, "wl%d: %s: channel_mgr_attach failed" - "\n", unit, __func__); - err = 33; - goto fail; - } - - /* init default when all parameters are ready, i.e. ->rateset */ - brcms_c_bss_default_init(wlc); - - /* - * Complete the wlc default state initializations.. - */ - - wlc->bsscfg->wlc = wlc; - - wlc->mimoft = FT_HT; - wlc->mimo_40txbw = AUTO; - wlc->ofdm_40txbw = AUTO; - wlc->cck_40txbw = AUTO; - brcms_c_update_mimo_band_bwcap(wlc, BRCMS_N_BW_20IN2G_40IN5G); - - /* Set default values of SGI */ - if (BRCMS_SGI_CAP_PHY(wlc)) { - brcms_c_ht_update_sgi_rx(wlc, (BRCMS_N_SGI_20 | - BRCMS_N_SGI_40)); - } else if (BRCMS_ISSSLPNPHY(wlc->band)) { - brcms_c_ht_update_sgi_rx(wlc, (BRCMS_N_SGI_20 | - BRCMS_N_SGI_40)); - } else { - brcms_c_ht_update_sgi_rx(wlc, 0); - } - - brcms_b_antsel_set(wlc->hw, wlc->asi->antsel_avail); - - if (perr) - *perr = 0; - - return wlc; - - fail: - wiphy_err(wl->wiphy, "wl%d: %s: failed with err %d\n", - unit, __func__, err); - if (wlc) - brcms_c_detach(wlc); - - if (perr) - *perr = err; - return NULL; -} |