| /* |
| * 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][0]; |
| #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]); |
| kfree(wlc->corestate->macstat_snapshot); |
| kfree(wlc->corestate); |
| kfree(wlc->hw->bandstate[0]); |
| kfree(wlc->hw); |
| if (wlc->beacon) |
| dev_kfree_skb_any(wlc->beacon); |
| if (wlc->probe_resp) |
| dev_kfree_skb_any(wlc->probe_resp); |
| |
| /* free the wlc */ |
| kfree(wlc); |
| wlc = NULL; |
| } |
| |
| 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)); |
| if (p) |
| 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, 6); |
| return; |
| } |
| |
| if (wlc_hw->_nbands > 1) |
| memcpy(etheraddr, sprom->et1mac, 6); |
| else |
| memcpy(etheraddr, sprom->il0mac, 6); |
| } |
| |
| /* 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; |
| |
| #ifdef DEBUG |
| /* save last rx fifo 0 overflow count */ |
| rxf0ovfl = wlc->core->macstat_snapshot->rxf0ovfl; |
| |
| /* save last tx fifo underflow count */ |
| for (i = 0; i < NFIFO; i++) |
| txfunfl[i] = wlc->core->macstat_snapshot->txfunfl[i]; |
| #endif /* DEBUG */ |
| |
| /* Read mac stats from contiguous shared memory */ |
| brcms_b_copyfrom_objmem(wlc->hw, M_UCODE_MACSTAT, &macstats, |
| sizeof(struct macstat), OBJADDR_SHM_SEL); |
| |
| #ifdef DEBUG |
| /* check for rx fifo 0 overflow */ |
| delta = (u16) (wlc->core->macstat_snapshot->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 = |
| (u16) (wlc->core->macstat_snapshot->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_PROMISC_IN_BSS | 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) < 0 || |
| (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_core_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 void brcms_c_attach_antgain_init(struct brcms_c_info *wlc) |
| { |
| uint unit; |
| unit = wlc->pub->unit; |
| |
| if ((wlc->band->antgain == -1) && (wlc->pub->sromrev == 1)) { |
| /* default antenna gain for srom rev 1 is 2 dBm (8 qdbm) */ |
| wlc->band->antgain = 8; |
| } else if (wlc->band->antgain == -1) { |
| wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in" |
| " srom, using 2dB\n", unit, __func__); |
| wlc->band->antgain = 8; |
| } else { |
| s8 gain, fract; |
| /* Older sroms specified gain in whole dbm only. In order |
| * be able to specify qdbm granularity and remain backward |
| * compatible the whole dbms are now encoded in only |
| * low 6 bits and remaining qdbms are encoded in the hi 2 bits. |
| * 6 bit signed number ranges from -32 - 31. |
| * |
| * Examples: |
| * 0x1 = 1 db, |
| * 0xc1 = 1.75 db (1 + 3 quarters), |
| * 0x3f = -1 (-1 + 0 quarters), |
| * 0x7f = -.75 (-1 + 1 quarters) = -3 qdbm. |
| * 0xbf = -.50 (-1 + 2 quarters) = -2 qdbm. |
| */ |
| gain = wlc->band->antgain & 0x3f; |
| gain <<= 2; /* Sign extend */ |
| gain >>= 2; |
| fract = (wlc->band->antgain & 0xc0) >> 6; |
| wlc->band->antgain = 4 * gain + fract; |
| } |
| } |
| |
| 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; |
| |
| brcms_c_attach_antgain_init(wlc); |
| |
| 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 int brcms_b_detach(struct brcms_c_info *wlc) |
| { |
| uint i; |
| struct brcms_hw_band *band; |
| struct brcms_hardware *wlc_hw = wlc->hw; |
| int callbacks; |
| |
| callbacks = 0; |
| |
| 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 callbacks; |
| |
| } |
| |
| /* |
| * 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 = 0; |
| |
| if (wlc == NULL) |
| return 0; |
| |
| callbacks += brcms_b_detach(wlc); |
| |
| /* delete software timers */ |
| 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_core_pci_irq_ctl(&wlc_hw->d11core->bus->drv_pci[0], 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_core_pci_down(wlc_hw->d11core->bus); |
| brcms_b_xtal(wlc_hw, OFF); |
| return -ENOMEDIUM; |
| } |
| |
| bcma_core_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_core_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) |
| 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 preamble; |
| 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 */ |
| preamble = 0; |
| 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; |
| } |