net: wireless: add brcm80211 drivers
Add the brcm80211 tree to drivers/net/wireless, and disable the version that's
in drivers/staging. This version includes the sources currently in staging,
plus any changes that have been sent out for review.
Sources in staging will be deleted in a followup patch.
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c
new file mode 100644
index 0000000..5fb999b
--- /dev/null
+++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
@@ -0,0 +1,8841 @@
+/*
+ * Copyright (c) 2010 Broadcom Corporation
+ *
+ * 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.
+ */
+
+#include <linux/pci_ids.h>
+#include <linux/if_ether.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"
+
+/*
+ * Indication for txflowcontrol that all priority bits in
+ * TXQ_STOP_FOR_PRIOFC_MASK are to be considered.
+ */
+#define ALLPRIO -1
+
+/*
+ * 32 SSID chars, max of 4 chars for each SSID char "\xFF", plus NULL.
+ */
+#define SSID_FMT_BUF_LEN ((4 * IEEE80211_MAX_SSID_LEN) + 1)
+
+/* watchdog timer, in unit of ms */
+#define TIMER_INTERVAL_WATCHDOG 1000
+/* radio monitor timer, in unit of ms */
+#define TIMER_INTERVAL_RADIOCHK 800
+
+/* Max MPC timeout, in unit of watchdog */
+#ifndef BRCMS_MPC_MAX_DELAYCNT
+#define BRCMS_MPC_MAX_DELAYCNT 10
+#endif
+
+/* Min MPC timeout, in unit of watchdog */
+#define BRCMS_MPC_MIN_DELAYCNT 1
+#define BRCMS_MPC_THRESHOLD 3 /* MPC count threshold level */
+
+/* beacon interval, in unit of 1024TU */
+#define BEACON_INTERVAL_DEFAULT 100
+/* DTIM interval, in unit of beacon interval */
+#define DTIM_INTERVAL_DEFAULT 3
+
+/* Scale down delays to accommodate QT slow speed */
+/* beacon interval, in unit of 1024TU */
+#define BEACON_INTERVAL_DEF_QT 20
+/* DTIM interval, in unit of beacon interval */
+#define DTIM_INTERVAL_DEF_QT 1
+
+#define TBTT_ALIGN_LEEWAY_US 100 /* min leeway before first TBTT in us */
+
+/* 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 11n feature disable flags */
+#define WLFEATURE_DISABLE_11N 0x00000001
+#define WLFEATURE_DISABLE_11N_STBC_TX 0x00000002
+#define WLFEATURE_DISABLE_11N_STBC_RX 0x00000004
+#define WLFEATURE_DISABLE_11N_SGI_TX 0x00000008
+#define WLFEATURE_DISABLE_11N_SGI_RX 0x00000010
+#define WLFEATURE_DISABLE_11N_AMPDU_TX 0x00000020
+#define WLFEATURE_DISABLE_11N_AMPDU_RX 0x00000040
+#define WLFEATURE_DISABLE_11N_GF 0x00000080
+
+#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_MIN_BEACON_PERIOD 1
+#define DOT11_MAX_BEACON_PERIOD 0xFFFF
+#define DOT11_MAXNUMFRAGS 16
+#define DOT11_MAX_FRAG_LEN 2346
+
+#define BPHY_PLCP_TIME 192
+#define RIFS_11N_TIME 2
+
+#define WME_VER 1
+#define WME_SUBTYPE_PARAM_IE 1
+#define WME_TYPE 2
+#define WME_OUI "\x00\x50\xf2"
+
+#define AC_BE 0
+#define AC_BK 1
+#define AC_VI 2
+#define AC_VO 3
+
+#define BCN_TMPL_LEN 512 /* length of the BCN template area */
+
+/* brcms_bss_info flag bit values */
+#define BRCMS_BSS_HT 0x0020 /* BSS is HT (MIMO) capable */
+
+/* Flags used in brcms_c_txq_info.stopped */
+/* per prio flow control bits */
+#define TXQ_STOP_FOR_PRIOFC_MASK 0x000000FF
+/* stop txq enqueue for packet drain */
+#define TXQ_STOP_FOR_PKT_DRAIN 0x00000100
+/* stop txq enqueue for ampdu flow control */
+#define TXQ_STOP_FOR_AMPDU_FLOW_CNTRL 0x00000200
+
+#define BRCMS_HWRXOFF 38 /* chip rx buffer offset */
+
+/* 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;
+}
+
+/* rfdisable delay timer 500 ms, runs of ALP clock */
+#define RFDISABLE_DEFAULT 10000000
+
+#define BRCMS_TEMPSENSE_PERIOD 10 /* 10 second timeout */
+
+/* precedences numbers for wlc queues. These are twice as may levels as
+ * 802.1D priorities.
+ * Odd numbers are used for HI priority traffic at same precedence levels
+ * These constants are used ONLY by wlc_prio2prec_map. Do not use them
+ * elsewhere.
+ */
+#define _BRCMS_PREC_NONE 0 /* None = - */
+#define _BRCMS_PREC_BK 2 /* BK - Background */
+#define _BRCMS_PREC_BE 4 /* BE - Best-effort */
+#define _BRCMS_PREC_EE 6 /* EE - Excellent-effort */
+#define _BRCMS_PREC_CL 8 /* CL - Controlled Load */
+#define _BRCMS_PREC_VI 10 /* Vi - Video */
+#define _BRCMS_PREC_VO 12 /* Vo - Voice */
+#define _BRCMS_PREC_NC 14 /* NC - Network Control */
+
+/* The BSS is generating beacons in HW */
+#define BRCMS_BSSCFG_HW_BCN 0x20
+
+#define SYNTHPU_DLY_APHY_US 3700 /* a phy synthpu_dly time in us */
+#define SYNTHPU_DLY_BPHY_US 1050 /* b/g phy synthpu_dly time in us */
+#define SYNTHPU_DLY_NPHY_US 2048 /* n phy REV3 synthpu_dly time in us */
+#define SYNTHPU_DLY_LPPHY_US 300 /* lpphy synthpu_dly time in us */
+
+#define SYNTHPU_DLY_PHY_US_QT 100 /* QT synthpu_dly time in us */
+
+#define ANTCNT 10 /* vanilla M_MAX_ANTCNT value */
+
+/* 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 fallback rate */
+#define RETRY_LONG_FB 2 /* Long count for fallback 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 indicates override both rate & mode */
+#define NRATE_OVERRIDE 0x80000000
+/* 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 /* bit indicates 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
+
+/* Max # of entries in Tx FIFO based on 4kb page size */
+#define NTXD 256
+/* Max # of entries in Rx FIFO based on 4kb page size */
+#define NRXD 256
+
+/* try to keep this # rbufs posted to the chip */
+#define NRXBUFPOST 32
+
+/* data msg txq hiwat mark */
+#define BRCMS_DATAHIWAT 50
+
+/* bounded rx loops */
+#define RXBND 8 /* max # frames to process in brcms_c_recv() */
+#define TXSBND 8 /* max # tx status to process in wlc_txstatus() */
+
+/*
+ * 32 SSID chars, max of 4 chars for each SSID char "\xFF", plus NULL.
+ */
+#define SSID_FMT_BUF_LEN ((4 * IEEE80211_MAX_SSID_LEN) + 1)
+
+/*
+ * 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 20
+
+struct d11init {
+ __le16 addr;
+ __le16 size;
+ __le32 value;
+};
+
+/* 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)
+{
+ if (!wlc->hw->clk)
+ return ai_deviceremoved(wlc->hw->sih);
+ return (R_REG(&wlc->hw->regs->maccontrol) &
+ (MCTL_PSM_JMP_0 | MCTL_IHR_EN)) != MCTL_IHR_EN;
+}
+
+/* sum the individual fifo tx pending packet counts */
+static s16 brcms_txpktpendtot(struct brcms_c_info *wlc)
+{
+ return wlc->core->txpktpend[0] + wlc->core->txpktpend[1] +
+ wlc->core->txpktpend[2] + wlc->core->txpktpend[3];
+}
+
+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;
+}
+
+struct edcf_acparam {
+ u8 ACI;
+ u8 ECW;
+ u16 TXOP;
+} __packed;
+
+const u8 prio2fifo[NUMPRIO] = {
+ TX_AC_BE_FIFO, /* 0 BE AC_BE Best Effort */
+ TX_AC_BK_FIFO, /* 1 BK AC_BK Background */
+ TX_AC_BK_FIFO, /* 2 -- AC_BK Background */
+ TX_AC_BE_FIFO, /* 3 EE AC_BE Best Effort */
+ TX_AC_VI_FIFO, /* 4 CL AC_VI Video */
+ TX_AC_VI_FIFO, /* 5 VI AC_VI Video */
+ TX_AC_VO_FIFO, /* 6 VO AC_VO Voice */
+ TX_AC_VO_FIFO /* 7 NC AC_VO Voice */
+};
+
+/* debug/trace */
+uint brcm_msg_level =
+#if defined(BCMDBG)
+ LOG_ERROR_VAL;
+#else
+ 0;
+#endif /* BCMDBG */
+
+/* TX FIFO number to WME/802.1E Access Category */
+static const u8 wme_fifo2ac[] = { AC_BK, AC_BE, AC_VI, AC_VO, AC_BE, AC_BE };
+
+/* WME/802.1E Access Category to TX FIFO number */
+static const u8 wme_ac2fifo[] = { 1, 0, 2, 3 };
+
+/* 802.1D Priority to precedence queue mapping */
+const u8 wlc_prio2prec_map[] = {
+ _BRCMS_PREC_BE, /* 0 BE - Best-effort */
+ _BRCMS_PREC_BK, /* 1 BK - Background */
+ _BRCMS_PREC_NONE, /* 2 None = - */
+ _BRCMS_PREC_EE, /* 3 EE - Excellent-effort */
+ _BRCMS_PREC_CL, /* 4 CL - Controlled Load */
+ _BRCMS_PREC_VI, /* 5 Vi - Video */
+ _BRCMS_PREC_VO, /* 6 Vo - Voice */
+ _BRCMS_PREC_NC, /* 7 NC - Network Control */
+};
+
+static const u16 xmtfifo_sz[][NFIFO] = {
+ /* 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},
+};
+
+static const u8 acbitmap2maxprio[] = {
+ PRIO_8021D_BE, PRIO_8021D_BE, PRIO_8021D_BK, PRIO_8021D_BK,
+ PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI, PRIO_8021D_VI,
+ PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO,
+ PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO, PRIO_8021D_VO
+};
+
+#ifdef BCMDBG
+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 BCMDBG
+/* pointer to most recently allocated wl/wlc */
+static struct brcms_c_info *wlc_info_dbg = (struct brcms_c_info *) (NULL);
+#endif
+
+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);
+
+ /* 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 d11regs __iomem *regs;
+
+ regs = wlc_hw->regs;
+
+ if (shortslot) {
+ /* 11g short slot: 11a timing */
+ W_REG(®s->ifs_slot, 0x0207); /* APHY_SLOT_TIME */
+ brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, APHY_SLOT_TIME);
+ } else {
+ /* 11g long slot: 11b timing */
+ W_REG(®s->ifs_slot, 0x0212); /* BPHY_SLOT_TIME */
+ brcms_b_write_shm(wlc_hw, M_DOT11_SLOT, BPHY_SLOT_TIME);
+ }
+}
+
+static void brcms_c_write_inits(struct brcms_hardware *wlc_hw,
+ const struct d11init *inits)
+{
+ int i;
+ u8 __iomem *base;
+ u8 __iomem *addr;
+ u16 size;
+ u32 value;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ base = (u8 __iomem *)wlc_hw->regs;
+
+ for (i = 0; inits[i].addr != cpu_to_le16(0xffff); i++) {
+ size = le16_to_cpu(inits[i].size);
+ addr = base + le16_to_cpu(inits[i].addr);
+ value = le32_to_cpu(inits[i].value);
+ if (size == 2)
+ W_REG((u16 __iomem *)addr, value);
+ else if (size == 4)
+ W_REG((u32 __iomem *)addr, 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 wiphy *wiphy = wlc_hw->wlc->wiphy;
+ 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, 23)) {
+ if (BRCMS_ISNPHY(wlc_hw->band))
+ brcms_c_write_inits(wlc_hw, ucode->d11n0bsinitvals16);
+ else
+ wiphy_err(wiphy, "%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
+ wiphy_err(wiphy, "%s: wl%d: unsupported phy in"
+ " core rev %d\n", __func__,
+ wlc_hw->unit, wlc_hw->corerev);
+ } else {
+ wiphy_err(wiphy, "%s: wl%d: unsupported corerev %d\n",
+ __func__, wlc_hw->unit, wlc_hw->corerev);
+ }
+ }
+}
+
+static void brcms_b_core_phy_clk(struct brcms_hardware *wlc_hw, bool clk)
+{
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d: clk %d\n", wlc_hw->unit, clk);
+
+ wlc_hw->phyclk = clk;
+
+ if (OFF == clk) { /* clear gmode bit, put phy into reset */
+
+ ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC | SICF_GMODE),
+ (SICF_PRST | SICF_FGC));
+ udelay(1);
+ ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_PRST);
+ udelay(1);
+
+ } else { /* take phy out of reset */
+
+ ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_FGC), SICF_FGC);
+ udelay(1);
+ ai_core_cflags(wlc_hw->sih, (SICF_FGC), 0);
+ udelay(1);
+
+ }
+}
+
+/* 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;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ WARN_ON((R_REG(&wlc_hw->regs->maccontrol) & 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 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 *head = NULL;
+ struct sk_buff *tail = NULL;
+ uint n = 0;
+ uint bound_limit = bound ? RXBND : -1;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+ /* gather received frames */
+ while ((p = dma_rx(wlc_hw->di[fifo]))) {
+
+ if (!tail)
+ head = tail = p;
+ else {
+ tail->prev = p;
+ tail = p;
+ }
+
+ /* !give others some time to run! */
+ if (++n >= bound_limit)
+ break;
+ }
+
+ /* post more rbufs */
+ dma_rxfill(wlc_hw->di[fifo]);
+
+ /* process each frame */
+ while ((p = head) != NULL) {
+ struct d11rxhdr_le *rxh_le;
+ struct d11rxhdr *rxh;
+ head = head->prev;
+ p->prev = NULL;
+
+ 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 n >= bound_limit;
+}
+
+/* process an individual struct tx_status */
+static bool
+brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
+{
+ struct sk_buff *p;
+ uint queue;
+ struct d11txh *txh;
+ 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;
+
+ /* 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)) {
+ wiphy_err(wlc->wiphy, "%s: INTERMEDIATE but not AMPDU\n",
+ __func__);
+ return false;
+ }
+
+ queue = txs->frameid & TXFID_QUEUE_MASK;
+ if (queue >= NFIFO) {
+ p = NULL;
+ goto fatal;
+ }
+
+ p = dma_getnexttxp(wlc->hw->di[queue], DMA_RANGE_TRANSMITTED);
+ if (p == NULL)
+ goto fatal;
+
+ txh = (struct d11txh *) (p->data);
+ mcl = le16_to_cpu(txh->MacTxControlLow);
+
+ if (txs->phyerr) {
+ if (brcm_msg_level & LOG_ERROR_VAL) {
+ wiphy_err(wlc->wiphy, "phyerr 0x%x, rate 0x%x\n",
+ txs->phyerr, txh->MainRates);
+ brcms_c_print_txdesc(txh);
+ }
+ brcms_c_print_txstatus(txs);
+ }
+
+ if (txs->frameid != le16_to_cpu(txh->TxFrameID))
+ goto fatal;
+ tx_info = IEEE80211_SKB_CB(p);
+ h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
+
+ if (tx_info->control.sta)
+ scb = &wlc->pri_scb;
+
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
+ brcms_c_ampdu_dotxstatus(wlc->ampdu, scb, p, txs);
+ return false;
+ }
+
+ supr_status = txs->status & TX_STATUS_SUPR_MASK;
+ if (supr_status == TX_STATUS_SUPR_BADCH)
+ BCMMSG(wlc->wiphy,
+ "%s: Pkt tx suppressed, possibly channel %d\n",
+ __func__, 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) {
+ wiphy_err(wlc->wiphy, "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 < AC_COUNT) {
+ 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 = brcmu_pkttotlen(p);
+ free_pdu = true;
+
+ brcms_c_txfifo_complete(wlc, queue, 1);
+
+ if (lastframe) {
+ p->next = NULL;
+ p->prev = NULL;
+ /* 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 {
+ wiphy_err(wlc->wiphy, "%s: Not last frame => not calling "
+ "tx_status\n", __func__);
+ }
+
+ return false;
+
+ fatal:
+ if (p)
+ brcmu_pkt_buf_free_skb(p);
+
+ return true;
+
+}
+
+/* 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)
+{
+ bool morepending = false;
+ struct brcms_c_info *wlc = wlc_hw->wlc;
+ struct d11regs __iomem *regs;
+ 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;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ txs = &txstatus;
+ regs = wlc_hw->regs;
+ *fatal = false;
+ while (!(*fatal)
+ && (s1 = R_REG(®s->frmtxstatus)) & TXS_V) {
+
+ if (s1 == 0xffffffff) {
+ wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n",
+ wlc_hw->unit, __func__);
+ return morepending;
+ }
+
+ s2 = R_REG(®s->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);
+
+ /* !give others some time to run! */
+ if (++n >= max_tx_num)
+ break;
+ }
+
+ if (*fatal)
+ return 0;
+
+ if (n >= max_tx_num)
+ morepending = true;
+
+ if (!pktq_empty(&wlc->pkt_queue->q))
+ brcms_c_send_q(wlc);
+
+ 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 d11regs __iomem *regs = wlc_hw->regs;
+ struct wiphy *wiphy = wlc->wiphy;
+
+ if (brcms_deviceremoved(wlc)) {
+ wiphy_err(wiphy, "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;
+
+ BCMMSG(wlc->wiphy, "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) {
+ wiphy_err(wiphy, "MI_TFS: fatal\n");
+ goto fatal;
+ }
+ }
+
+ if (macintstatus & (MI_TBTT | MI_DTIM_TBTT))
+ brcms_c_tbtt(wlc);
+
+ /* ATIM window end */
+ if (macintstatus & MI_ATIMWINEND) {
+ BCMMSG(wlc->wiphy, "end of ATIM window\n");
+ OR_REG(®s->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) {
+ wiphy_err(wiphy, "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__, wlc_hw->sih->chip,
+ wlc_hw->sih->chiprev);
+ /* big hammer */
+ brcms_init(wlc->wl);
+ }
+
+ /* gptimer timeout */
+ if (macintstatus & MI_TO)
+ W_REG(®s->gptimer, 0);
+
+ if (macintstatus & MI_RFDISABLE) {
+ BCMMSG(wlc->wiphy, "wl%d: BMAC Detected a change on the"
+ " RF Disable Input\n", wlc_hw->unit);
+ brcms_rfkill_set_hw_state(wlc->wl);
+ }
+
+ /* send any enq'd tx packets. Just makes sure to jump start tx */
+ if (!pktq_empty(&wlc->pkt_queue->q))
+ brcms_c_send_q(wlc);
+
+ /* it isn't done and needs to be resched if macintstatus is non-zero */
+ return wlc->macintstatus != 0;
+
+ fatal:
+ brcms_init(wlc->wl);
+ return wlc->macintstatus != 0;
+}
+
+/* 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 struct dma64regs __iomem *
+dmareg(struct brcms_hardware *hw, uint direction, uint fifonum)
+{
+ if (direction == DMA_TX)
+ return &(hw->regs->fifo64regs[fifonum].dmaxmt);
+ return &(hw->regs->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;
+ struct wiphy *wiphy = wlc->wiphy;
+
+ /* 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_hw->sih,
+ (wme ? dmareg(wlc_hw, DMA_TX, 0) :
+ NULL), dmareg(wlc_hw, DMA_RX, 0),
+ (wme ? NTXD : 0), NRXD,
+ RXBUFSZ, -1, NRXBUFPOST,
+ BRCMS_HWRXOFF, &brcm_msg_level);
+ 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_hw->sih,
+ dmareg(wlc_hw, DMA_TX, 1), NULL,
+ NTXD, 0, 0, -1, 0, 0,
+ &brcm_msg_level);
+ 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_hw->sih,
+ dmareg(wlc_hw, DMA_TX, 2), NULL,
+ NTXD, 0, 0, -1, 0, 0,
+ &brcm_msg_level);
+ 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_hw->sih,
+ dmareg(wlc_hw, DMA_TX, 3),
+ NULL, NTXD, 0, 0, -1,
+ 0, 0, &brcm_msg_level);
+ dma_attach_err |= (NULL == wlc_hw->di[3]);
+/* Cleaner to leave this as if with AP defined */
+
+ if (dma_attach_err) {
+ wiphy_err(wiphy, "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, uint mode)
+{
+ if (wlc_hw->sih->cccaps & 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 == CLK_FAST) {
+ OR_REG(&wlc_hw->regs->clk_ctl_st,
+ CCS_FORCEHT);
+
+ udelay(64);
+
+ SPINWAIT(((R_REG
+ (&wlc_hw->regs->
+ clk_ctl_st) & CCS_HTAVAIL) == 0),
+ PMU_MAX_TRANSITION_DLY);
+ WARN_ON(!(R_REG
+ (&wlc_hw->regs->
+ clk_ctl_st) & CCS_HTAVAIL));
+ } else {
+ if ((wlc_hw->sih->pmurev == 0) &&
+ (R_REG
+ (&wlc_hw->regs->
+ clk_ctl_st) & (CCS_FORCEHT | CCS_HTAREQ)))
+ SPINWAIT(((R_REG
+ (&wlc_hw->regs->
+ clk_ctl_st) & CCS_HTAVAIL)
+ == 0),
+ PMU_MAX_TRANSITION_DLY);
+ AND_REG(&wlc_hw->regs->clk_ctl_st,
+ ~CCS_FORCEHT);
+ }
+ }
+ wlc_hw->forcefastclk = (mode == CLK_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(!(ai_core_sflags(wlc_hw->sih, 0, 0) &
+ 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;
+ }
+
+ W_REG(&wlc_hw->regs->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 d11regs __iomem *regs;
+ u16 mac_l;
+ u16 mac_m;
+ u16 mac_h;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d: brcms_b_set_addrmatch\n",
+ wlc_hw->unit);
+
+ regs = wlc_hw->regs;
+ 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 */
+ W_REG(®s->rcm_ctl, RCM_INC_DATA | match_reg_offset);
+ W_REG(®s->rcm_mat_data, mac_l);
+ W_REG(®s->rcm_mat_data, mac_m);
+ W_REG(®s->rcm_mat_data, mac_h);
+
+}
+
+void
+brcms_b_write_template_ram(struct brcms_hardware *wlc_hw, int offset, int len,
+ void *buf)
+{
+ struct d11regs __iomem *regs;
+ u32 word;
+ __le32 word_le;
+ __be32 word_be;
+ bool be_bit;
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ regs = wlc_hw->regs;
+ W_REG(®s->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 = (R_REG(®s->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;
+ }
+
+ W_REG(®s->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;
+
+ W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMIN);
+ (void)R_REG(&wlc_hw->regs->objaddr);
+ W_REG(&wlc_hw->regs->objdata, newmin);
+}
+
+static void brcms_b_set_cwmax(struct brcms_hardware *wlc_hw, u16 newmax)
+{
+ wlc_hw->band->CWmax = newmax;
+
+ W_REG(&wlc_hw->regs->objaddr, OBJADDR_SCR_SEL | S_DOT11_CWMAX);
+ (void)R_REG(&wlc_hw->regs->objaddr);
+ W_REG(&wlc_hw->regs->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, CLK_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, CLK_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;
+
+ BCMMSG(wlc->wiphy, "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)
+{
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ ai_corereg(wlc_hw->sih, SI_CC_IDX,
+ offsetof(struct chipcregs, chipcontrol_addr), ~0, 0);
+ udelay(1);
+ ai_corereg(wlc_hw->sih, SI_CC_IDX,
+ offsetof(struct chipcregs, chipcontrol_data), 0x4, 0);
+ udelay(1);
+ ai_corereg(wlc_hw->sih, SI_CC_IDX,
+ offsetof(struct chipcregs, chipcontrol_data), 0x4, 4);
+ udelay(1);
+ ai_corereg(wlc_hw->sih, SI_CC_IDX,
+ 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)
+ ai_core_cflags(wlc_hw->sih, SICF_FGC, SICF_FGC);
+ else
+ ai_core_cflags(wlc_hw->sih, SICF_FGC, 0);
+
+}
+
+void brcms_b_macphyclk_set(struct brcms_hardware *wlc_hw, bool clk)
+{
+ if (ON == clk)
+ ai_core_cflags(wlc_hw->sih, SICF_MPCLKE, SICF_MPCLKE);
+ else
+ ai_core_cflags(wlc_hw->sih, 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;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\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 */
+ ai_core_cflags(wlc_hw->sih, 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 */
+ ai_core_cflags(wlc_hw->sih, (SICF_PRST | SICF_PCLKE),
+ (SICF_PRST | SICF_PCLKE));
+ phy_in_reset = true;
+ } else {
+ ai_core_cflags(wlc_hw->sih,
+ (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 (!ai_iscoreup(wlc_hw->sih)) {
+ ai_core_reset(wlc_hw->sih, 0, 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((R_REG(&wlc_hw->regs->maccontrol) & MCTL_EN_MAC) != 0);
+}
+
+/* low-level band switch utility routine */
+void brcms_c_setxband(struct brcms_hardware *wlc_hw, uint bandunit)
+{
+ BCMMSG(wlc_hw->wlc->wiphy, "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)
+ ai_core_cflags(wlc_hw->sih, SICF_GMODE,
+ ((bandunit == 0) ? SICF_GMODE : 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 (wlc_hw->sih->boardvendor != 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 char *brcms_c_get_macaddr(struct brcms_hardware *wlc_hw)
+{
+ enum brcms_srom_id var_id = BRCMS_SROM_MACADDR;
+ char *macaddr;
+
+ /* If macaddr exists, use it (Sromrev4, CIS, ...). */
+ macaddr = getvar(wlc_hw->sih, var_id);
+ if (macaddr != NULL)
+ return macaddr;
+
+ if (wlc_hw->_nbands > 1)
+ var_id = BRCMS_SROM_ET1MACADDR;
+ else
+ var_id = BRCMS_SROM_IL0MACADDR;
+
+ macaddr = getvar(wlc_hw->sih, var_id);
+ if (macaddr == NULL)
+ wiphy_err(wlc_hw->wlc->wiphy, "wl%d: wlc_get_macaddr: macaddr "
+ "getvar(%d) not found\n", wlc_hw->unit, var_id);
+
+ return macaddr;
+}
+
+/* power both the pll and external oscillator on/off */
+static void brcms_b_xtal(struct brcms_hardware *wlc_hw, bool want)
+{
+ BCMMSG(wlc_hw->wlc->wiphy, "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;
+
+ if (wlc_hw->sih)
+ ai_clkctl_xtal(wlc_hw->sih, XTAL | PLL, want);
+
+ 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 resetbits = 0, 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
+ */
+ flags |= SICF_PCLKE;
+
+ /*
+ * AI chip doesn't restore bar0win2 on
+ * hibernation/resume, need sw fixup
+ */
+ if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
+ (wlc_hw->sih->chip == BCM43225_CHIP_ID))
+ wlc_hw->regs = (struct d11regs __iomem *)
+ ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
+ ai_core_reset(wlc_hw->sih, flags, resetbits);
+ brcms_c_mctrl_reset(wlc_hw);
+ }
+
+ v = ((R_REG(&wlc_hw->regs->phydebug) & PDBG_RFD) != 0);
+
+ /* put core back into reset */
+ if (!clk)
+ ai_core_disable(wlc_hw->sih, 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)
+{
+ struct d11regs __iomem *regs;
+ uint i;
+ bool fastclk;
+ u32 resetbits = 0;
+
+ if (flags == BRCMS_USE_COREFLAGS)
+ flags = (wlc_hw->band->pi ? wlc_hw->band->core_flags : 0);
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ regs = wlc_hw->regs;
+
+ /* request FAST clock if not on */
+ fastclk = wlc_hw->forcefastclk;
+ if (!fastclk)
+ brcms_b_clkctl_clk(wlc_hw, CLK_FAST);
+
+ /* reset the dma engines except first time thru */
+ if (ai_iscoreup(wlc_hw->sih)) {
+ for (i = 0; i < NFIFO; i++)
+ if ((wlc_hw->di[i]) && (!dma_txreset(wlc_hw->di[i])))
+ wiphy_err(wlc_hw->wlc->wiphy, "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)))
+ wiphy_err(wlc_hw->wlc->wiphy, "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
+ */
+ 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;
+ ai_core_reset(wlc_hw->sih, flags, resetbits);
+ 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 (wlc_hw->sih->cccaps & CC_CAP_PMU)
+ brcms_b_clkctl_clk(wlc_hw, CLK_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, CLK_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 d11regs __iomem *regs = wlc_hw->regs;
+ 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);
+
+ W_REG(®s->xmtfifocmd, txfifo_cmd);
+ W_REG(®s->xmtfifodef, txfifo_def);
+ W_REG(®s->xmtfifodef1, txfifo_def1);
+
+ W_REG(®s->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 d11regs __iomem *regs = wlc_hw->regs;
+
+ if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
+ (wlc_hw->sih->chip == BCM43225_CHIP_ID)) {
+ if (spurmode == WL_SPURAVOID_ON2) { /* 126Mhz */
+ W_REG(®s->tsf_clk_frac_l, 0x2082);
+ W_REG(®s->tsf_clk_frac_h, 0x8);
+ } else if (spurmode == WL_SPURAVOID_ON1) { /* 123Mhz */
+ W_REG(®s->tsf_clk_frac_l, 0x5341);
+ W_REG(®s->tsf_clk_frac_h, 0x8);
+ } else { /* 120Mhz */
+ W_REG(®s->tsf_clk_frac_l, 0x8889);
+ W_REG(®s->tsf_clk_frac_h, 0x8);
+ }
+ } else if (BRCMS_ISLCNPHY(wlc_hw->band)) {
+ if (spurmode == WL_SPURAVOID_ON1) { /* 82Mhz */
+ W_REG(®s->tsf_clk_frac_l, 0x7CE0);
+ W_REG(®s->tsf_clk_frac_h, 0xC);
+ } else { /* 80Mhz */
+ W_REG(®s->tsf_clk_frac_l, 0xCCCD);
+ W_REG(®s->tsf_clk_frac_h, 0xC);
+ }
+ }
+}
+
+/* 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;
+ struct d11regs __iomem *regs;
+ u32 gc, gm;
+
+ regs = wlc_hw->regs;
+
+ /* 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
+ */
+ OR_REG(®s->psm_gpio_oe,
+ (BOARD_GPIO_12 | BOARD_GPIO_13));
+ OR_REG(®s->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 */
+ ai_gpiocontrol(wlc_hw->sih, gm, gc, GPIO_DRV_PRIORITY);
+}
+
+static void brcms_ucode_write(struct brcms_hardware *wlc_hw,
+ const __le32 ucode[], const size_t nbytes)
+{
+ struct d11regs __iomem *regs = wlc_hw->regs;
+ uint i;
+ uint count;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ count = (nbytes / sizeof(u32));
+
+ W_REG(®s->objaddr, (OBJADDR_AUTO_INC | OBJADDR_UCM_SEL));
+ (void)R_REG(®s->objaddr);
+ for (i = 0; i < count; i++)
+ W_REG(®s->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, 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
+ wiphy_err(wlc->wiphy, "%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 {
+ wiphy_err(wlc->wiphy, "%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 d11regs __iomem *regs = wlc_hw->regs;
+ struct wiphy *wiphy = wlc_hw->wlc->wiphy;
+
+ unit = wlc_hw->unit;
+
+ for (idx = 0; idx < NFIFO; idx++) {
+ /* read intstatus register and ignore any non-error bits */
+ intstatus =
+ R_REG(®s->intctrlregs[idx].intstatus) & I_ERRORS;
+ if (!intstatus)
+ continue;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d: intstatus%d 0x%x\n",
+ unit, idx, intstatus);
+
+ if (intstatus & I_RO) {
+ wiphy_err(wiphy, "wl%d: fifo %d: receive fifo "
+ "overflow\n", unit, idx);
+ fatal = true;
+ }
+
+ if (intstatus & I_PC) {
+ wiphy_err(wiphy, "wl%d: fifo %d: descriptor error\n",
+ unit, idx);
+ fatal = true;
+ }
+
+ if (intstatus & I_PD) {
+ wiphy_err(wiphy, "wl%d: fifo %d: data error\n", unit,
+ idx);
+ fatal = true;
+ }
+
+ if (intstatus & I_DE) {
+ wiphy_err(wiphy, "wl%d: fifo %d: descriptor protocol "
+ "error\n", unit, idx);
+ fatal = true;
+ }
+
+ if (intstatus & I_RU)
+ wiphy_err(wiphy, "wl%d: fifo %d: receive descriptor "
+ "underflow\n", idx, unit);
+
+ if (intstatus & I_XU) {
+ wiphy_err(wiphy, "wl%d: fifo %d: transmit fifo "
+ "underflow\n", idx, unit);
+ fatal = true;
+ }
+
+ if (fatal) {
+ brcms_c_fatal_error(wlc_hw->wlc); /* big hammer */
+ break;
+ } else
+ W_REG(®s->intctrlregs[idx].intstatus,
+ intstatus);
+ }
+}
+
+void brcms_c_intrson(struct brcms_c_info *wlc)
+{
+ struct brcms_hardware *wlc_hw = wlc->hw;
+ wlc->macintmask = wlc->defmacintmask;
+ W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
+}
+
+/*
+ * callback for siutils.c, which has only wlc handler, no wl they both check
+ * up, not only because there is no need to off/restore d11 interrupt but also
+ * because per-port code may require sync with valid interrupt.
+ */
+static u32 brcms_c_wlintrsoff(struct brcms_c_info *wlc)
+{
+ if (!wlc->hw->up)
+ return 0;
+
+ return brcms_intrsoff(wlc->wl);
+}
+
+static void brcms_c_wlintrsrestore(struct brcms_c_info *wlc, u32 macintmask)
+{
+ if (!wlc->hw->up)
+ return;
+
+ brcms_intrsrestore(wlc->wl, 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 */
+
+ W_REG(&wlc_hw->regs->macintmask, 0);
+ (void)R_REG(&wlc_hw->regs->macintmask); /* sync readback */
+ 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;
+ W_REG(&wlc_hw->regs->macintmask, wlc->macintmask);
+}
+
+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);
+ }
+}
+
+static void brcms_b_mute(struct brcms_hardware *wlc_hw, bool on, u32 flags)
+{
+ static const u8 null_ether_addr[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
+
+ if (on) {
+ /* 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,
+ wlc_hw->etheraddr);
+ }
+
+ wlc_phy_mute_upd(wlc_hw->band->pi, on, flags);
+
+ if (on)
+ brcms_c_ucode_mute_override_set(wlc_hw);
+ else
+ brcms_c_ucode_mute_override_clear(wlc_hw);
+}
+
+/*
+ * 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 d11regs __iomem *regs = wlc_hw->regs;
+ u32 macintstatus;
+
+ /* macintstatus includes a DMA interrupt summary bit */
+ macintstatus = R_REG(®s->macintstatus);
+
+ BCMMSG(wlc->wiphy, "wl%d: macintstatus: 0x%x\n", wlc_hw->unit,
+ macintstatus);
+
+ /* 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 &= (in_isr ? wlc->macintmask : wlc->defmacintmask);
+
+ /* if not for us */
+ if (macintstatus == 0)
+ return 0;
+
+ /* interrupts are already turned off for CFE build
+ * Caution: For CFE Turning off the interrupts again has some undesired
+ * consequences
+ */
+ /* turn off the interrupts */
+ W_REG(®s->macintmask, 0);
+ (void)R_REG(®s->macintmask); /* sync readback */
+ wlc->macintmask = 0;
+
+ /* clear device interrupts */
+ W_REG(®s->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.
+ */
+ W_REG(®s->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, false otherwise.
+ * *wantdpc will be set to true if further brcms_c_dpc() processing is required,
+ * false otherwise.
+ */
+bool brcms_c_isr(struct brcms_c_info *wlc, bool *wantdpc)
+{
+ struct brcms_hardware *wlc_hw = wlc->hw;
+ u32 macintstatus;
+
+ *wantdpc = false;
+
+ if (!wlc_hw->up || !wlc->macintmask)
+ return false;
+
+ /* read and clear macintstatus and intstatus registers */
+ macintstatus = wlc_intstatus(wlc, true);
+
+ if (macintstatus == 0xffffffff)
+ wiphy_err(wlc->wiphy, "DEVICEREMOVED detected in the ISR code"
+ " path\n");
+
+ /* it is not for us */
+ if (macintstatus == 0)
+ return false;
+
+ *wantdpc = true;
+
+ /* 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 d11regs __iomem *regs = wlc_hw->regs;
+ u32 mc, mi;
+ struct wiphy *wiphy = wlc->wiphy;
+
+ BCMMSG(wlc->wiphy, "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 = R_REG(®s->maccontrol);
+
+ if (mc == 0xffffffff) {
+ wiphy_err(wiphy, "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 = R_REG(®s->macintstatus);
+ if (mi == 0xffffffff) {
+ wiphy_err(wiphy, "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(!(R_REG(®s->macintstatus) & MI_MACSSPNDD),
+ BRCMS_MAX_MAC_SUSPEND);
+
+ if (!(R_REG(®s->macintstatus) & MI_MACSSPNDD)) {
+ wiphy_err(wiphy, "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);
+ wiphy_err(wiphy, "wl%d: psmdebug 0x%08x, phydebug 0x%08x, "
+ "psm_brc 0x%04x\n", wlc_hw->unit,
+ R_REG(®s->psmdebug),
+ R_REG(®s->phydebug),
+ R_REG(®s->psm_brc));
+ }
+
+ mc = R_REG(®s->maccontrol);
+ if (mc == 0xffffffff) {
+ wiphy_err(wiphy, "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 d11regs __iomem *regs = wlc_hw->regs;
+ u32 mc, mi;
+
+ BCMMSG(wlc->wiphy, "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 = R_REG(®s->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);
+ W_REG(®s->macintstatus, MI_MACSSPNDD);
+
+ mc = R_REG(®s->maccontrol);
+ WARN_ON(mc & MCTL_PSM_JMP_0);
+ WARN_ON(!(mc & MCTL_EN_MAC));
+ WARN_ON(!(mc & MCTL_PSM_RUN));
+
+ mi = R_REG(®s->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 d11regs __iomem *regs;
+ u32 w, val;
+ struct wiphy *wiphy = wlc_hw->wlc->wiphy;
+
+ BCMMSG(wiphy, "wl%d\n", wlc_hw->unit);
+
+ regs = wlc_hw->regs;
+
+ /* Validate dchip register access */
+
+ W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
+ (void)R_REG(®s->objaddr);
+ w = R_REG(®s->objdata);
+
+ /* Can we write and read back a 32bit register? */
+ W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
+ (void)R_REG(®s->objaddr);
+ W_REG(®s->objdata, (u32) 0xaa5555aa);
+
+ W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
+ (void)R_REG(®s->objaddr);
+ val = R_REG(®s->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;
+ }
+
+ W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
+ (void)R_REG(®s->objaddr);
+ W_REG(®s->objdata, (u32) 0x55aaaa55);
+
+ W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
+ (void)R_REG(®s->objaddr);
+ val = R_REG(®s->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;
+ }
+
+ W_REG(®s->objaddr, OBJADDR_SHM_SEL | 0);
+ (void)R_REG(®s->objaddr);
+ W_REG(®s->objdata, w);
+
+ /* clear CFPStart */
+ W_REG(®s->tsf_cfpstart, 0);
+
+ w = R_REG(®s->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 d11regs __iomem *regs;
+ u32 tmp;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ tmp = 0;
+ regs = wlc_hw->regs;
+
+ if (on) {
+ if ((wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
+ OR_REG(®s->clk_ctl_st,
+ (CCS_ERSRC_REQ_HT | CCS_ERSRC_REQ_D11PLL |
+ CCS_ERSRC_REQ_PHYPLL));
+ SPINWAIT((R_REG(®s->clk_ctl_st) &
+ (CCS_ERSRC_AVAIL_HT)) != (CCS_ERSRC_AVAIL_HT),
+ PHYPLL_WAIT_US);
+
+ tmp = R_REG(®s->clk_ctl_st);
+ if ((tmp & (CCS_ERSRC_AVAIL_HT)) !=
+ (CCS_ERSRC_AVAIL_HT))
+ wiphy_err(wlc_hw->wlc->wiphy, "%s: turn on PHY"
+ " PLL failed\n", __func__);
+ } else {
+ OR_REG(®s->clk_ctl_st,
+ (CCS_ERSRC_REQ_D11PLL | CCS_ERSRC_REQ_PHYPLL));
+ SPINWAIT((R_REG(®s->clk_ctl_st) &
+ (CCS_ERSRC_AVAIL_D11PLL |
+ CCS_ERSRC_AVAIL_PHYPLL)) !=
+ (CCS_ERSRC_AVAIL_D11PLL |
+ CCS_ERSRC_AVAIL_PHYPLL), PHYPLL_WAIT_US);
+
+ tmp = R_REG(®s->clk_ctl_st);
+ if ((tmp &
+ (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL))
+ !=
+ (CCS_ERSRC_AVAIL_D11PLL | CCS_ERSRC_AVAIL_PHYPLL))
+ wiphy_err(wlc_hw->wlc->wiphy, "%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.
+ */
+ AND_REG(®s->clk_ctl_st, ~CCS_ERSRC_REQ_PHYPLL);
+ tmp = R_REG(®s->clk_ctl_st);
+ }
+}
+
+void brcms_c_coredisable(struct brcms_hardware *wlc_hw)
+{
+ bool dev_gone;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\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;
+ ai_core_disable(wlc_hw->sih, 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);
+ wlc->core->txpktpend[i] = 0;
+ BCMMSG(wlc->wiphy, "pktpend fifo %d clrd\n", 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 d11regs __iomem *regs = wlc_hw->regs;
+ u16 __iomem *objdata_lo = (u16 __iomem *)®s->objdata;
+ u16 __iomem *objdata_hi = objdata_lo + 1;
+ u16 v;
+
+ W_REG(®s->objaddr, sel | (offset >> 2));
+ (void)R_REG(®s->objaddr);
+ if (offset & 2)
+ v = R_REG(objdata_hi);
+ else
+ v = R_REG(objdata_lo);
+
+ return v;
+}
+
+static void
+brcms_b_write_objmem(struct brcms_hardware *wlc_hw, uint offset, u16 v,
+ u32 sel)
+{
+ struct d11regs __iomem *regs = wlc_hw->regs;
+ u16 __iomem *objdata_lo = (u16 __iomem *)®s->objdata;
+ u16 __iomem *objdata_hi = objdata_lo + 1;
+
+ W_REG(®s->objaddr, sel | (offset >> 2));
+ (void)R_REG(®s->objaddr);
+ if (offset & 2)
+ W_REG(objdata_hi, v);
+ else
+ W_REG(objdata_lo, 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;
+ }
+}
+
+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) {
+ W_REG(&wlc_hw->regs->objaddr,
+ OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
+ (void)R_REG(&wlc_hw->regs->objaddr);
+ W_REG(&wlc_hw->regs->objdata, wlc_hw->SRL);
+ W_REG(&wlc_hw->regs->objaddr,
+ OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
+ (void)R_REG(&wlc_hw->regs->objaddr);
+ W_REG(&wlc_hw->regs->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
+ */
+bool brcms_c_ps_allowed(struct brcms_c_info *wlc)
+{
+ struct brcms_bss_cfg *cfg = wlc->bsscfg;
+
+ /* disallow PS when one of the following global conditions meets */
+ if (!wlc->pub->associated)
+ return false;
+
+ /* disallow PS when one of these meets when not scanning */
+ if (wlc->monitor)
+ return false;
+
+ if (cfg->associated) {
+ /*
+ * disallow PS when one of the following
+ * bsscfg specific conditions meets
+ */
+ if (!cfg->BSS)
+ return false;
+
+ return false;
+ }
+
+ return true;
+}
+
+static void brcms_b_reset(struct brcms_hardware *wlc_hw)
+{
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ /* 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)
+{
+ BCMMSG(wlc->wiphy, "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((char *)wlc->core->macstat_snapshot, 0,
+ sizeof(struct macstat));
+
+ brcms_b_reset(wlc->hw);
+}
+
+void brcms_c_fatal_error(struct brcms_c_info *wlc)
+{
+ wiphy_err(wlc->wiphy, "wl%d: fatal error, reinitializing\n",
+ wlc->pub->unit);
+ brcms_init(wlc->wl);
+}
+
+/* Return the channel the driver should initialize during brcms_c_init.
+ * the channel may have to be changed from the currently configured channel
+ * if other configurations are in conflict (bandlocked, 11n mode disabled,
+ * invalid channel for current country, etc.)
+ */
+static u16 brcms_c_init_chanspec(struct brcms_c_info *wlc)
+{
+ u16 chanspec =
+ 1 | WL_CHANSPEC_BW_20 | WL_CHANSPEC_CTL_SB_NONE |
+ WL_CHANSPEC_BAND_2G;
+
+ return chanspec;
+}
+
+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 d11regs __iomem *regs;
+ u32 sflags;
+ uint bcnint_us;
+ uint i = 0;
+ bool fifosz_fixup = false;
+ int err = 0;
+ u16 buf[NFIFO];
+ struct wiphy *wiphy = wlc->wiphy;
+ struct brcms_ucode *ucode = &wlc_hw->wlc->wl->ucode;
+
+ regs = wlc_hw->regs;
+
+ BCMMSG(wlc->wiphy, "wl%d\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 */
+ W_REG(®s->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(((R_REG(®s->macintstatus) & MI_MACSSPNDD) == 0),
+ 1000 * 1000);
+ if ((R_REG(®s->macintstatus) & MI_MACSSPNDD) == 0)
+ wiphy_err(wiphy, "wl%d: wlc_coreinit: ucode did not self-"
+ "suspend!\n", wlc_hw->unit);
+
+ brcms_c_gpio_init(wlc);
+
+ sflags = ai_core_sflags(wlc_hw->sih, 0, 0);
+
+ if (D11REV_IS(wlc_hw->corerev, 23)) {
+ if (BRCMS_ISNPHY(wlc_hw->band))
+ brcms_c_write_inits(wlc_hw, ucode->d11n0initvals16);
+ else
+ wiphy_err(wiphy, "%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
+ wiphy_err(wiphy, "%s: wl%d: unsupported phy in corerev"
+ " %d\n", __func__, wlc_hw->unit,
+ wlc_hw->corerev);
+ } else {
+ wiphy_err(wiphy, "%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 == true)
+ 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)
+ wiphy_err(wiphy, "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(R_REG(®s->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 */
+ W_REG(®s->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;
+ W_REG(®s->tsf_cfprep, (bcnint_us << CFPREP_CBI_SHIFT));
+ W_REG(®s->tsf_cfpstart, bcnint_us);
+ W_REG(®s->macintstatus, MI_GP1);
+
+ /* write interrupt mask */
+ W_REG(®s->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);
+ W_REG(®s->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 */
+ W_REG(®s->objaddr, OBJADDR_SCR_SEL | S_DOT11_SRC_LMT);
+ (void)R_REG(®s->objaddr);
+ W_REG(®s->objdata, wlc_hw->SRL);
+ W_REG(®s->objaddr, OBJADDR_SCR_SEL | S_DOT11_LRC_LMT);
+ (void)R_REG(®s->objaddr);
+ W_REG(®s->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);
+
+ AND_REG(®s->ifs_ctl, 0x0FFF);
+ W_REG(®s->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,
+ bool mute) {
+ u32 macintmask;
+ bool fastclk;
+ struct brcms_c_info *wlc = wlc_hw->wlc;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ /* request FAST clock if not on */
+ fastclk = wlc_hw->forcefastclk;
+ if (!fastclk)
+ brcms_b_clkctl_clk(wlc_hw, CLK_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);
+
+ /* suspend the tx fifos and mute the phy for preism cac time */
+ if (mute)
+ brcms_b_mute(wlc_hw, ON, PHY_MUTE_FOR_PREISM);
+
+ /* 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, CLK_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_c_bandinit_ordered(struct brcms_c_info *wlc,
+ u16 chanspec)
+{
+ struct brcms_c_rateset default_rateset;
+ uint parkband;
+ uint i, band_order[2];
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
+ /*
+ * 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);
+}
+
+/*
+ * 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 */
+ }
+
+ /* update the various promisc bits */
+ brcms_c_mac_bcn_promisc(wlc);
+ brcms_c_mac_promisc(wlc);
+}
+
+/* band-specific init */
+static void brcms_c_bsinit(struct brcms_c_info *wlc)
+{
+ BCMMSG(wlc->wiphy, "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) {
+ wiphy_err(wlc->wiphy, "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;
+}
+
+/*
+ * Initialize the base precedence map for dequeueing
+ * from txq based on WME settings
+ */
+static void brcms_c_tx_prec_map_init(struct brcms_c_info *wlc)
+{
+ wlc->tx_prec_map = BRCMS_PREC_BMP_ALL;
+ memset(wlc->fifo2prec_map, 0, NFIFO * sizeof(u16));
+
+ wlc->fifo2prec_map[TX_AC_BK_FIFO] = BRCMS_PREC_BMP_AC_BK;
+ wlc->fifo2prec_map[TX_AC_BE_FIFO] = BRCMS_PREC_BMP_AC_BE;
+ wlc->fifo2prec_map[TX_AC_VI_FIFO] = BRCMS_PREC_BMP_AC_VI;
+ wlc->fifo2prec_map[TX_AC_VO_FIFO] = BRCMS_PREC_BMP_AC_VO;
+}
+
+static void
+brcms_c_txflowcontrol_signal(struct brcms_c_info *wlc,
+ struct brcms_txq_info *qi, bool on, int prio)
+{
+ /* transmit flowcontrol is not yet implemented */
+}
+
+static void brcms_c_txflowcontrol_reset(struct brcms_c_info *wlc)
+{
+ struct brcms_txq_info *qi;
+
+ for (qi = wlc->tx_queues; qi != NULL; qi = qi->next) {
+ if (qi->stopped) {
+ brcms_c_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
+ qi->stopped = 0;
+ }
+ }
+}
+
+void brcms_c_init(struct brcms_c_info *wlc)
+{
+ struct d11regs __iomem *regs;
+ u16 chanspec;
+ bool mute = false;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
+
+ regs = wlc->regs;
+
+ /*
+ * This will happen if a big-hammer was executed. In
+ * that case, we want to go back to the channel that
+ * we were on and not new channel
+ */
+ if (wlc->pub->associated)
+ chanspec = wlc->home_chanspec;
+ else
+ chanspec = brcms_c_init_chanspec(wlc);
+
+ brcms_b_init(wlc->hw, chanspec, mute);
+
+ /* 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->bsscfg->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
+ */
+ W_REG(®s->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) */
+ OR_REG(®s->ifs_ctl, IFS_USEEDCF);
+ brcms_c_edcf_setparams(wlc, false);
+
+ /* Init precedence maps for empty FIFOs */
+ brcms_c_tx_prec_map_init(wlc);
+
+ /* read the ucode version if we have not yet done so */
+ if (wlc->ucode_rev == 0) {
+ wlc->ucode_rev =
+ brcms_b_read_shm(wlc->hw, M_BOM_REV_MAJOR) << NBITS(u16);
+ wlc->ucode_rev |= brcms_b_read_shm(wlc->hw, M_BOM_REV_MINOR);
+ }
+
+ /* ..now really unleash hell (allow the MAC out of suspend) */
+ brcms_c_enable_mac(wlc);
+
+ /* clear tx flow control */
+ brcms_c_txflowcontrol_reset(wlc);
+
+ /* enable the RF Disable Delay timer */
+ W_REG(&wlc->regs->rfdisabledly, RFDISABLE_DEFAULT);
+
+ /* initialize mpc delay */
+ wlc->mpc_delay_off = wlc->mpc_dlycnt = BRCMS_MPC_MIN_DELAYCNT;
+
+ /*
+ * 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 < AC_COUNT; ac++)
+ wlc->wme_retries[ac] =
+ brcms_b_read_shm(wlc->hw, M_AC_TXLMT_ADDR(ac));
+ }
+}
+
+void brcms_c_mac_bcn_promisc_change(struct brcms_c_info *wlc, bool promisc)
+{
+ wlc->bcnmisc_monitor = promisc;
+ brcms_c_mac_bcn_promisc(wlc);
+}
+
+void brcms_c_mac_bcn_promisc(struct brcms_c_info *wlc)
+{
+ if (wlc->bcnmisc_monitor)
+ brcms_b_mctrl(wlc->hw, MCTL_BCNS_PROMISC, MCTL_BCNS_PROMISC);
+ else
+ brcms_b_mctrl(wlc->hw, MCTL_BCNS_PROMISC, 0);
+}
+
+/* set or clear maccontrol bits MCTL_PROMISC and MCTL_KEEPCONTROL */
+void brcms_c_mac_promisc(struct brcms_c_info *wlc)
+{
+ u32 promisc_bits = 0;
+
+ /*
+ * promiscuous mode just sets MCTL_PROMISC
+ * Note: APs get all BSS traffic without the need to set
+ * the MCTL_PROMISC bit since all BSS data traffic is
+ * directed at the AP
+ */
+ if (wlc->pub->promisc)
+ promisc_bits |= MCTL_PROMISC;
+
+ /* monitor mode needs both MCTL_PROMISC and MCTL_KEEPCONTROL
+ * Note: monitor mode also needs MCTL_BCNS_PROMISC, but that is
+ * handled in brcms_c_mac_bcn_promisc()
+ */
+ if (wlc->monitor)
+ promisc_bits |= MCTL_PROMISC | MCTL_KEEPCONTROL;
+
+ brcms_b_mctrl(wlc->hw, MCTL_PROMISC | MCTL_KEEPCONTROL, promisc_bits);
+}
+
+/* push sw hps and wake state through hardware */
+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);
+
+ BCMMSG(wlc->wiphy, "wl%d: hps %d\n", wlc->pub->unit, hps);
+
+ v1 = R_REG(&wlc->regs->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.
+ */
+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, bsscfg->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.
+ */
+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);
+}
+
+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).
+ */
+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);
+}
+
+void brcms_c_set_home_chanspec(struct brcms_c_info *wlc, u16 chanspec)
+{
+ if (wlc->home_chanspec != chanspec) {
+ wlc->home_chanspec = chanspec;
+
+ if (wlc->bsscfg->associated)
+ wlc->bsscfg->current_bss->chanspec = chanspec;
+ }
+}
+
+void
+brcms_b_set_chanspec(struct brcms_hardware *wlc_hw, u16 chanspec,
+ bool mute, struct txpwr_limits *txpwr)
+{
+ uint bandunit;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "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);
+
+ 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, 0);
+ }
+}
+
+/* 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);
+}
+
+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)) {
+ wiphy_err(wlc->wiphy, "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) {
+ wiphy_err(wlc->wiphy, "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);
+}
+
+u32 brcms_c_lowest_basic_rspec(struct brcms_c_info *wlc,
+ struct brcms_c_rateset *rs)
+{
+ u32 lowest_basic_rspec;
+ uint i;
+
+ /* Use the lowest basic rate */
+ lowest_basic_rspec = rs->rates[0] & BRCMS_RATE_MASK;
+ for (i = 0; i < rs->count; i++) {
+ if (rs->rates[i] & BRCMS_RATE_FLAG) {
+ lowest_basic_rspec = rs->rates[i] & BRCMS_RATE_MASK;
+ break;
+ }
+ }
+
+ /*
+ * pick siso/cdd as default for OFDM (note no basic
+ * rate MCSs are supported yet)
+ */
+ if (is_ofdm_rate(lowest_basic_rspec))
+ lowest_basic_rspec |= (wlc->stf->ss_opmode << RSPEC_STF_SHIFT);
+
+ return lowest_basic_rspec;
+}
+
+/*
+ * 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)
+{
+ 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) {
+ wiphy_err(wlc->wiphy, "wl%d: %s : no-clock\n", wlc->pub->unit,
+ __func__);
+ return;
+ }
+
+ memset((char *)&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 == 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) {
+ wiphy_err(wlc->wiphy, "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 =
+ R_REG(&wlc->regs->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_enable_mac(wlc);
+ }
+}
+
+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 < AC_COUNT; 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);
+ }
+}
+
+/* maintain LED behavior in down state */
+static void brcms_c_down_led_upd(struct brcms_c_info *wlc)
+{
+ /*
+ * maintain LEDs while in down state, turn on sbclk if
+ * not available yet. Turn on sbclk if necessary
+ */
+ brcms_b_pllreq(wlc->hw, true, BRCMS_PLLREQ_FLIP);
+ brcms_b_pllreq(wlc->hw, false, BRCMS_PLLREQ_FLIP);
+}
+
+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->wl, wlc->radio_timer, TIMER_INTERVAL_RADIOCHK,
+ true);
+}
+
+void brcms_c_radio_disable(struct brcms_c_info *wlc)
+{
+ if (!wlc->pub->up) {
+ brcms_c_down_led_upd(wlc);
+ return;
+ }
+
+ brcms_c_radio_monitor_start(wlc);
+ brcms_down(wlc->wl);
+}
+
+static void brcms_c_radio_enable(struct brcms_c_info *wlc)
+{
+ if (wlc->pub->up)
+ return;
+
+ if (brcms_deviceremoved(wlc))
+ return;
+
+ brcms_up(wlc->wl);
+}
+
+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->wl, 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);
+}
+
+/*
+ * centralized radio disable/enable function,
+ * invoke radio enable/disable after updating hwradio status
+ */
+static void brcms_c_radio_upd(struct brcms_c_info *wlc)
+{
+ if (wlc->pub->radio_disabled)
+ brcms_c_radio_disable(wlc);
+ else
+ brcms_c_radio_enable(wlc);
+}
+
+/* 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)) {
+ wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
+ __func__);
+ brcms_down(wlc->wl);
+ return;
+ }
+
+ /* cap mpc off count */
+ if (wlc->mpc_offcnt < BRCMS_MPC_MAX_DELAYCNT)
+ wlc->mpc_offcnt++;
+
+ brcms_c_radio_hwdisable_upd(wlc);
+ brcms_c_radio_upd(wlc);
+}
+
+/* common low-level watchdog code */
+static void brcms_b_watchdog(void *arg)
+{
+ struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
+ struct brcms_hardware *wlc_hw = wlc->hw;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ 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(void *arg)
+{
+ struct brcms_c_info *wlc = (struct brcms_c_info *) arg;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
+
+ if (!wlc->pub->up)
+ return;
+
+ if (brcms_deviceremoved(wlc)) {
+ wiphy_err(wlc->wiphy, "wl%d: %s: dead chip\n", wlc->pub->unit,
+ __func__);
+ brcms_down(wlc->wl);
+ return;
+ }
+
+ /* increment second count */
+ wlc->pub->now++;
+
+ /* delay radio disable */
+ if (wlc->mpc_delay_off) {
+ if (--wlc->mpc_delay_off == 0) {
+ mboolset(wlc->pub->radio_disabled,
+ WL_RADIO_MPC_DISABLE);
+ if (wlc->mpc && brcms_c_ismpc(wlc))
+ wlc->mpc_offcnt = 0;
+ }
+ }
+
+ /* mpc sync */
+ brcms_c_radio_mpc_upd(wlc);
+ /* radio sync: sw/hw/mpc --> radio_disable/radio_enable */
+ brcms_c_radio_hwdisable_upd(wlc);
+ brcms_c_radio_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)
+{
+ brcms_c_watchdog(arg);
+}
+
+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
+ */
+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;
+ wlc->pub->bcmerror = 0;
+
+ /* initialize mpc delay */
+ wlc->mpc_delay_off = wlc->mpc_dlycnt = BRCMS_MPC_MIN_DELAYCNT;
+}
+
+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, u16 vendor, u16 device,
+ uint unit, bool piomode, void __iomem *regsva,
+ struct pci_dev *btparam)
+{
+ struct brcms_hardware *wlc_hw;
+ struct d11regs __iomem *regs;
+ char *macaddr = NULL;
+ uint err = 0;
+ uint j;
+ bool wme = false;
+ struct shared_phy_params sha_params;
+ struct wiphy *wiphy = wlc->wiphy;
+
+ BCMMSG(wlc->wiphy, "wl%d: vendor 0x%x device 0x%x\n", unit, vendor,
+ device);
+
+ 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(regsva, btparam);
+ 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(vendor, device)) {
+ wiphy_err(wiphy, "wl%d: brcms_b_attach: Unsupported "
+ "vendor/device (0x%x/0x%x)\n",
+ unit, vendor, device);
+ err = 12;
+ goto fail;
+ }
+
+ wlc_hw->vendorid = vendor;
+ wlc_hw->deviceid = device;
+
+ /* set bar0 window to point at D11 core */
+ wlc_hw->regs = (struct d11regs __iomem *)
+ ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
+ wlc_hw->corerev = ai_corerev(wlc_hw->sih);
+
+ regs = wlc_hw->regs;
+
+ wlc->regs = wlc_hw->regs;
+
+ /* 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, CLK_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 = getintvar(wlc_hw->sih, BRCMS_SROM_BOARDREV);
+ /* 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, wlc_hw->sih->boardtype, wlc_hw->boardrev);
+ err = 15;
+ goto fail;
+ }
+ wlc_hw->sromrev = (u8) getintvar(wlc_hw->sih, BRCMS_SROM_REV);
+ wlc_hw->boardflags = (u32) getintvar(wlc_hw->sih,
+ BRCMS_SROM_BOARDFLAGS);
+ wlc_hw->boardflags2 = (u32) getintvar(wlc_hw->sih,
+ BRCMS_SROM_BOARDFLAGS2);
+
+ 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)
+ /* Dualband boards */
+ wlc_hw->_nbands = 2;
+ else
+ wlc_hw->_nbands = 1;
+
+ if ((wlc_hw->sih->chip == BCM43225_CHIP_ID))
+ 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 = wlc_hw->sih->chip;
+ sha_params.chiprev = wlc_hw->sih->chiprev;
+ sha_params.chippkg = wlc_hw->sih->chippkg;
+ sha_params.sromrev = wlc_hw->sromrev;
+ sha_params.boardtype = wlc_hw->sih->boardtype;
+ sha_params.boardrev = wlc_hw->boardrev;
+ sha_params.boardvendor = wlc_hw->sih->boardvendor;
+ sha_params.boardflags = wlc_hw->boardflags;
+ sha_params.boardflags2 = wlc_hw->boardflags2;
+ sha_params.buscorerev = wlc_hw->sih->buscorerev;
+
+ /* 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 = ai_coreidx(wlc_hw->sih);
+
+ wlc_hw->machwcap = R_REG(®s->machwcap);
+ wlc_hw->machwcap_backup = wlc_hw->machwcap;
+
+ /* init tx fifo size */
+ wlc_hw->xmtfifo_sz =
+ xmtfifo_sz[(wlc_hw->corerev - XMTFIFOTBL_STARTREV)];
+
+ /* Get a phy for this band */
+ wlc_hw->band->pi =
+ wlc_phy_attach(wlc_hw->phy_sh, regs,
+ 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;
+
+ /* 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 */
+ ai_pci_down(wlc_hw->sih);
+
+ /* register sb interrupt callback functions */
+ ai_register_intr_callback(wlc_hw->sih, (void *)brcms_c_wlintrsoff,
+ (void *)brcms_c_wlintrsrestore, NULL, wlc);
+
+ /* 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 */
+ macaddr = brcms_c_get_macaddr(wlc_hw);
+ if (macaddr == NULL) {
+ wiphy_err(wiphy, "wl%d: brcms_b_attach: macaddr not found\n",
+ unit);
+ err = 21;
+ goto fail;
+ }
+ if (!mac_pton(macaddr, wlc_hw->etheraddr) ||
+ is_broadcast_ether_addr(wlc_hw->etheraddr) ||
+ is_zero_ether_addr(wlc_hw->etheraddr)) {
+ wiphy_err(wiphy, "wl%d: brcms_b_attach: bad macaddr %s\n",
+ unit, macaddr);
+ err = 22;
+ goto fail;
+ }
+
+ BCMMSG(wlc->wiphy,
+ "deviceid 0x%x nbands %d board 0x%x macaddr: %s\n",
+ wlc_hw->deviceid, wlc_hw->_nbands,
+ wlc_hw->sih->boardtype, macaddr);
+
+ 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 si_pub *sih = wlc->hw->sih;
+
+ unit = wlc->pub->unit;
+ bandtype = wlc->band->bandtype;
+
+ /* get antennas available */
+ if (bandtype == BRCM_BAND_5G)
+ aa = (s8) getintvar(sih, BRCMS_SROM_AA5G);
+ else
+ aa = (s8) getintvar(sih, BRCMS_SROM_AA2G);
+
+ 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 = (s8) getintvar(sih, BRCMS_SROM_AG1);
+ else
+ wlc->band->antgain = (s8) getintvar(sih, BRCMS_SROM_AG0);
+
+ 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((char *)(bi), 0, sizeof(struct brcms_bss_info));
+ 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 struct brcms_txq_info *brcms_c_txq_alloc(struct brcms_c_info *wlc)
+{
+ struct brcms_txq_info *qi, *p;
+
+ qi = kzalloc(sizeof(struct brcms_txq_info), GFP_ATOMIC);
+ if (qi != NULL) {
+ /*
+ * Have enough room for control packets along with HI watermark
+ * Also, add room to txq for total psq packets if all the SCBs
+ * leave PS mode. The watermark for flowcontrol to OS packets
+ * will remain the same
+ */
+ brcmu_pktq_init(&qi->q, BRCMS_PREC_COUNT,
+ 2 * BRCMS_DATAHIWAT + PKTQ_LEN_DEFAULT);
+
+ /* add this queue to the the global list */
+ p = wlc->tx_queues;
+ if (p == NULL) {
+ wlc->tx_queues = qi;
+ } else {
+ while (p->next != NULL)
+ p = p->next;
+ p->next = qi;
+ }
+ }
+ return qi;
+}
+
+static void brcms_c_txq_free(struct brcms_c_info *wlc,
+ struct brcms_txq_info *qi)
+{
+ struct brcms_txq_info *p;
+
+ if (qi == NULL)
+ return;
+
+ /* remove the queue from the linked list */
+ p = wlc->tx_queues;
+ if (p == qi)
+ wlc->tx_queues = p->next;
+ else {
+ while (p != NULL && p->next != qi)
+ p = p->next;
+ if (p != NULL)
+ p->next = p->next->next;
+ }
+
+ kfree(qi);
+}
+
+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;
+ }
+ }
+}
+
+/*
+ * The common driver entry routine. Error codes should be unique
+ */
+struct brcms_c_info *
+brcms_c_attach(struct brcms_info *wl, u16 vendor, u16 device, uint unit,
+ bool piomode, void __iomem *regsva, struct pci_dev *btparam,
+ 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 = (struct brcms_c_info *) brcms_c_attach_malloc(unit, &err, device);
+ if (wlc == NULL)
+ goto fail;
+ wlc->wiphy = wl->wiphy;
+ pub = wlc->pub;
+
+#if defined(BCMDBG)
+ 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;
+
+ /* 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, vendor, device, unit, piomode, regsva,
+ btparam);
+ 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..
+ */
+
+ /* allocate our initial queue */
+ wlc->pkt_queue = brcms_c_txq_alloc(wlc);
+ if (wlc->pkt_queue == NULL) {
+ wiphy_err(wl->wiphy, "wl%d: %s: failed to malloc tx queue\n",
+ unit, __func__);
+ err = 100;
+ goto fail;
+ }
+
+ 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);
+ }
+
+ /* initialize radio_mpc_disable according to wlc->mpc */
+ brcms_c_radio_mpc_upd(wlc);
+ 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;
+}
+
+static void brcms_c_timers_deinit(struct brcms_c_info *wlc)
+{
+ /* free timer state */
+ if (wlc->wdtimer) {
+ brcms_free_timer(wlc->wl, wlc->wdtimer);
+ wlc->wdtimer = NULL;
+ }
+ if (wlc->radio_timer) {
+ brcms_free_timer(wlc->wl, 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;
+
+ if (wlc_hw->sih) {
+ /*
+ * detach interrupt sync mechanism since interrupt is disabled
+ * and per-port interrupt object may has been freed. this must
+ * be done before sb core switch
+ */
+ ai_deregister_intr_callback(wlc_hw->sih);
+ ai_pci_sleep(wlc_hw->sih);
+ }
+
+ 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;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
+
+ 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);
+
+
+ while (wlc->tx_queues != NULL)
+ brcms_c_txq_free(wlc, wlc->tx_queues);
+
+ brcms_c_detach_mfree(wlc);
+ return callbacks;
+}
+
+/* update state that depends on the current value of "ap" */
+void brcms_c_ap_upd(struct brcms_c_info *wlc)
+{
+ /* STA-BSS; short capable */
+ wlc->PLCPHdr_override = BRCMS_PLCP_SHORT;
+
+ /* fixup mpc */
+ wlc->mpc = true;
+}
+
+/*
+ * return true if Minimum Power Consumption should
+ * be entered, false otherwise
+ */
+bool brcms_c_is_non_delay_mpc(struct brcms_c_info *wlc)
+{
+ return false;
+}
+
+bool brcms_c_ismpc(struct brcms_c_info *wlc)
+{
+ return (wlc->mpc_delay_off == 0) && (brcms_c_is_non_delay_mpc(wlc));
+}
+
+void brcms_c_radio_mpc_upd(struct brcms_c_info *wlc)
+{
+ bool mpc_radio, radio_state;
+
+ /*
+ * Clear the WL_RADIO_MPC_DISABLE bit when mpc feature is disabled
+ * in case the WL_RADIO_MPC_DISABLE bit was set. Stop the radio
+ * monitor also when WL_RADIO_MPC_DISABLE is the only reason that
+ * the radio is going down.
+ */
+ if (!wlc->mpc) {
+ if (!wlc->pub->radio_disabled)
+ return;
+ mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
+ brcms_c_radio_upd(wlc);
+ if (!wlc->pub->radio_disabled)
+ brcms_c_radio_monitor_stop(wlc);
+ return;
+ }
+
+ /*
+ * sync ismpc logic with WL_RADIO_MPC_DISABLE bit in
+ * wlc->pub->radio_disabled to go ON, always call radio_upd
+ * synchronously to go OFF, postpone radio_upd to later when
+ * context is safe(e.g. watchdog)
+ */
+ radio_state =
+ (mboolisset(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE) ? OFF :
+ ON);
+ mpc_radio = (brcms_c_ismpc(wlc) == true) ? OFF : ON;
+
+ if (radio_state == ON && mpc_radio == OFF)
+ wlc->mpc_delay_off = wlc->mpc_dlycnt;
+ else if (radio_state == OFF && mpc_radio == ON) {
+ mboolclr(wlc->pub->radio_disabled, WL_RADIO_MPC_DISABLE);
+ brcms_c_radio_upd(wlc);
+ if (wlc->mpc_offcnt < BRCMS_MPC_THRESHOLD)
+ wlc->mpc_dlycnt = BRCMS_MPC_MAX_DELAYCNT;
+ else
+ wlc->mpc_dlycnt = BRCMS_MPC_MIN_DELAYCNT;
+ }
+ /*
+ * Below logic is meant to capture the transition from mpc off
+ * to mpc on for reasons other than wlc->mpc_delay_off keeping
+ * the mpc off. In that case reset wlc->mpc_delay_off to
+ * wlc->mpc_dlycnt, so that we restart the countdown of mpc_delay_off
+ */
+ if ((wlc->prev_non_delay_mpc == false) &&
+ (brcms_c_is_non_delay_mpc(wlc) == true) && wlc->mpc_delay_off)
+ wlc->mpc_delay_off = wlc->mpc_dlycnt;
+
+ wlc->prev_non_delay_mpc = brcms_c_is_non_delay_mpc(wlc);
+}
+/* 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;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "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, CLK_FAST);
+
+ ai_pci_fixcfg(wlc_hw->sih);
+
+ /*
+ * AI chip doesn't restore bar0win2 on
+ * hibernation/resume, need sw fixup
+ */
+ if ((wlc_hw->sih->chip == BCM43224_CHIP_ID) ||
+ (wlc_hw->sih->chip == BCM43225_CHIP_ID))
+ wlc_hw->regs = (struct d11regs __iomem *)
+ ai_setcore(wlc_hw->sih, D11_CORE_ID, 0);
+
+ /*
+ * 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)
+ && (wlc_hw->sih->chip == BCM4313_CHIP_ID)) {
+ 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)
+{
+ uint coremask;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "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, CLK_FAST);
+
+ /*
+ * Configure pci/pcmcia here instead of in brcms_c_attach()
+ * to allow mfg hotswap: down, hotswap (chip power cycle), up.
+ */
+ coremask = (1 << wlc_hw->wlc->core->coreidx);
+
+ ai_pci_setup(wlc_hw->sih, coremask);
+
+ /*
+ * 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 */
+ ai_pci_down(wlc_hw->sih);
+ brcms_b_xtal(wlc_hw, OFF);
+ return -ENOMEDIUM;
+ }
+
+ ai_pci_up(wlc_hw->sih);
+
+ /* 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)
+{
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ 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, CLK_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 < AC_COUNT; 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)
+{
+ BCMMSG(wlc->wiphy, "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)
+ && (wlc->pub->sih->chip == BCM4313_CHIP_ID)) {
+ 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->enable && bsscfg->BSS)
+ wiphy_err(wlc->wiphy, "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) {
+ brcms_c_suspend_mac_and_wait(wlc);
+ brcms_c_set_chanspec(wlc, wlc->default_bss->chanspec);
+ 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->wl, 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;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ 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, CLK_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;
+
+ BCMMSG(wlc_hw->wlc->wiphy, "wl%d\n", wlc_hw->unit);
+
+ 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 (ai_iscoreup(wlc_hw->sih)) {
+ if (R_REG(&wlc_hw->regs->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) {
+ ai_pci_down(wlc_hw->sih);
+ 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;
+ struct brcms_txq_info *qi;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
+
+ /* check if we are already in the going down path */
+ if (wlc->going_down) {
+ wiphy_err(wlc->wiphy, "wl%d: %s: Driver going down so return"
+ "\n", wlc->pub->unit, __func__);
+ return 0;
+ }
+ if (!wlc->pub->up)
+ return callbacks;
+
+ /* in between, mpc could try to bring down again.. */
+ 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->wl, 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);
+
+ /* clear txq flow control */
+ brcms_c_txflowcontrol_reset(wlc);
+
+ /* flush tx queues */
+ for (qi = wlc->tx_queues; qi != NULL; qi = qi->next)
+ brcmu_pktq_flush(&qi->q, true, NULL, NULL);
+
+ 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;
+
+ /* Legacy or bust when no OFDM is supported by regulatory */
+ if ((brcms_c_channel_locale_flags_in_band(wlc->cmi, band->bandunit) &
+ BRCMS_NO_OFDM) && (gmode != GMODE_LEGACY_B))
+ return -EINVAL;
+
+ /* update configuration value */
+ if (config == true)
+ brcms_c_protection_upd(wlc, BRCMS_PROT_G_USER, gmode);
+
+ /* Clear rateset override */
+ memset(&rs, 0, sizeof(struct brcms_c_rateset));
+
+ 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 */
+ wiphy_err(wlc->wiphy, "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->bsscfg->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 < AC_COUNT; 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(struct brcms_c_rateset));
+
+ /* 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->bsscfg->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;
+}
+
+int brcms_c_set_beacon_period(struct brcms_c_info *wlc, u16 period)
+{
+ if (period < DOT11_MIN_BEACON_PERIOD ||
+ period > DOT11_MAX_BEACON_PERIOD)
+ return -EINVAL;
+
+ wlc->default_bss->beacon_period = period;
+ 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(struct modulecb));
+ return 0;
+ }
+ }
+
+ /* table not found! */
+ return -ENODATA;
+}
+
+#ifdef BCMDBG
+static const char * const supr_reason[] = {
+ "None", "PMQ Entry", "Flush request",
+ "Previous frag failure", "Channel mismatch",
+ "Lifetime Expiry", "Underflow"
+};
+
+static void brcms_c_print_txs_status(u16 s)
+{
+ printk(KERN_DEBUG "[15:12] %d frame attempts\n",
+ (s & TX_STATUS_FRM_RTX_MASK) >> TX_STATUS_FRM_RTX_SHIFT);
+ printk(KERN_DEBUG " [11:8] %d rts attempts\n",
+ (s & TX_STATUS_RTS_RTX_MASK) >> TX_STATUS_RTS_RTX_SHIFT);
+ printk(KERN_DEBUG " [7] %d PM mode indicated\n",
+ ((s & TX_STATUS_PMINDCTD) ? 1 : 0));
+ printk(KERN_DEBUG " [6] %d intermediate status\n",
+ ((s & TX_STATUS_INTERMEDIATE) ? 1 : 0));
+ printk(KERN_DEBUG " [5] %d AMPDU\n",
+ (s & TX_STATUS_AMPDU) ? 1 : 0);
+ printk(KERN_DEBUG " [4:2] %d Frame Suppressed Reason (%s)\n",
+ ((s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT),
+ supr_reason[(s & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT]);
+ printk(KERN_DEBUG " [1] %d acked\n",
+ ((s & TX_STATUS_ACK_RCV) ? 1 : 0));
+}
+#endif /* BCMDBG */
+
+void brcms_c_print_txstatus(struct tx_status *txs)
+{
+#if defined(BCMDBG)
+ u16 s = txs->status;
+ u16 ackphyrxsh = txs->ackphyrxsh;
+
+ printk(KERN_DEBUG "\ntxpkt (MPDU) Complete\n");
+
+ printk(KERN_DEBUG "FrameID: %04x ", txs->frameid);
+ printk(KERN_DEBUG "TxStatus: %04x", s);
+ printk(KERN_DEBUG "\n");
+
+ brcms_c_print_txs_status(s);
+
+ printk(KERN_DEBUG "LastTxTime: %04x ", txs->lasttxtime);
+ printk(KERN_DEBUG "Seq: %04x ", txs->sequence);
+ printk(KERN_DEBUG "PHYTxStatus: %04x ", txs->phyerr);
+ printk(KERN_DEBUG "RxAckRSSI: %04x ",
+ (ackphyrxsh & PRXS1_JSSI_MASK) >> PRXS1_JSSI_SHIFT);
+ printk(KERN_DEBUG "RxAckSQ: %04x",
+ (ackphyrxsh & PRXS1_SQ_MASK) >> PRXS1_SQ_SHIFT);
+ printk(KERN_DEBUG "\n");
+#endif /* defined(BCMDBG) */
+}
+
+void brcms_c_statsupd(struct brcms_c_info *wlc)
+{
+ int i;
+ struct macstat macstats;
+#ifdef BCMDBG
+ u16 delta;
+ u16 rxf0ovfl;
+ u16 txfunfl[NFIFO];
+#endif /* BCMDBG */
+
+ /* if driver down, make no sense to update stats */
+ if (!wlc->pub->up)
+ return;
+
+#ifdef BCMDBG
+ /* 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 /* BCMDBG */
+
+ /* Read mac stats from contiguous shared memory */
+ brcms_b_copyfrom_objmem(wlc->hw, M_UCODE_MACSTAT, &macstats,
+ sizeof(struct macstat), OBJADDR_SHM_SEL);
+
+#ifdef BCMDBG
+ /* check for rx fifo 0 overflow */
+ delta = (u16) (wlc->core->macstat_snapshot->rxf0ovfl - rxf0ovfl);
+ if (delta)
+ wiphy_err(wlc->wiphy, "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)
+ wiphy_err(wlc->wiphy, "wl%d: %u tx fifo %d underflows!"
+ "\n", wlc->pub->unit, delta, i);
+ }
+#endif /* BCMDBG */
+
+ /* merge counters from dma module */
+ for (i = 0; i < NFIFO; i++) {
+ if (wlc->hw->di[i])
+ dma_counterreset(wlc->hw->di[i]);
+ }
+}
+
+bool brcms_c_chipmatch(u16 vendor, u16 device)
+{
+ if (vendor != PCI_VENDOR_ID_BROADCOM) {
+ pr_err("chipmatch: unknown vendor id %04x\n", vendor);
+ return false;
+ }
+
+ if (device == BCM43224_D11N_ID_VEN1)
+ 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("chipmatch: unknown device id %04x\n", device);
+ return false;
+}
+
+#if defined(BCMDBG)
+void brcms_c_print_txdesc(struct d11txh *txh)
+{
+ u16 mtcl = le16_to_cpu(txh->MacTxControlLow);
+ u16 mtch = le16_to_cpu(txh->MacTxControlHigh);
+ u16 mfc = le16_to_cpu(txh->MacFrameControl);
+ u16 tfest = le16_to_cpu(txh->TxFesTimeNormal);
+ u16 ptcw = le16_to_cpu(txh->PhyTxControlWord);
+ u16 ptcw_1 = le16_to_cpu(txh->PhyTxControlWord_1);
+ u16 ptcw_1_Fbr = le16_to_cpu(txh->PhyTxControlWord_1_Fbr);
+ u16 ptcw_1_Rts = le16_to_cpu(txh->PhyTxControlWord_1_Rts);
+ u16 ptcw_1_FbrRts = le16_to_cpu(txh->PhyTxControlWord_1_FbrRts);
+ u16 mainrates = le16_to_cpu(txh->MainRates);
+ u16 xtraft = le16_to_cpu(txh->XtraFrameTypes);
+ u8 *iv = txh->IV;
+ u8 *ra = txh->TxFrameRA;
+ u16 tfestfb = le16_to_cpu(txh->TxFesTimeFallback);
+ u8 *rtspfb = txh->RTSPLCPFallback;
+ u16 rtsdfb = le16_to_cpu(txh->RTSDurFallback);
+ u8 *fragpfb = txh->FragPLCPFallback;
+ u16 fragdfb = le16_to_cpu(txh->FragDurFallback);
+ u16 mmodelen = le16_to_cpu(txh->MModeLen);
+ u16 mmodefbrlen = le16_to_cpu(txh->MModeFbrLen);
+ u16 tfid = le16_to_cpu(txh->TxFrameID);
+ u16 txs = le16_to_cpu(txh->TxStatus);
+ u16 mnmpdu = le16_to_cpu(txh->MaxNMpdus);
+ u16 mabyte = le16_to_cpu(txh->MaxABytes_MRT);
+ u16 mabyte_f = le16_to_cpu(txh->MaxABytes_FBR);
+ u16 mmbyte = le16_to_cpu(txh->MinMBytes);
+
+ u8 *rtsph = txh->RTSPhyHeader;
+ struct ieee80211_rts rts = txh->rts_frame;
+ char hexbuf[256];
+
+ /* add plcp header along with txh descriptor */
+ printk(KERN_DEBUG "Raw TxDesc + plcp header:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+ txh, sizeof(struct d11txh) + 48);
+
+ printk(KERN_DEBUG "TxCtlLow: %04x ", mtcl);
+ printk(KERN_DEBUG "TxCtlHigh: %04x ", mtch);
+ printk(KERN_DEBUG "FC: %04x ", mfc);
+ printk(KERN_DEBUG "FES Time: %04x\n", tfest);
+ printk(KERN_DEBUG "PhyCtl: %04x%s ", ptcw,
+ (ptcw & PHY_TXC_SHORT_HDR) ? " short" : "");
+ printk(KERN_DEBUG "PhyCtl_1: %04x ", ptcw_1);
+ printk(KERN_DEBUG "PhyCtl_1_Fbr: %04x\n", ptcw_1_Fbr);
+ printk(KERN_DEBUG "PhyCtl_1_Rts: %04x ", ptcw_1_Rts);
+ printk(KERN_DEBUG "PhyCtl_1_Fbr_Rts: %04x\n", ptcw_1_FbrRts);
+ printk(KERN_DEBUG "MainRates: %04x ", mainrates);
+ printk(KERN_DEBUG "XtraFrameTypes: %04x ", xtraft);
+ printk(KERN_DEBUG "\n");
+
+ brcmu_format_hex(hexbuf, iv, sizeof(txh->IV));
+ printk(KERN_DEBUG "SecIV: %s\n", hexbuf);
+ brcmu_format_hex(hexbuf, ra, sizeof(txh->TxFrameRA));
+ printk(KERN_DEBUG "RA: %s\n", hexbuf);
+
+ printk(KERN_DEBUG "Fb FES Time: %04x ", tfestfb);
+ brcmu_format_hex(hexbuf, rtspfb, sizeof(txh->RTSPLCPFallback));
+ printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
+ printk(KERN_DEBUG "RTS DUR: %04x ", rtsdfb);
+ brcmu_format_hex(hexbuf, fragpfb, sizeof(txh->FragPLCPFallback));
+ printk(KERN_DEBUG "PLCP: %s ", hexbuf);
+ printk(KERN_DEBUG "DUR: %04x", fragdfb);
+ printk(KERN_DEBUG "\n");
+
+ printk(KERN_DEBUG "MModeLen: %04x ", mmodelen);
+ printk(KERN_DEBUG "MModeFbrLen: %04x\n", mmodefbrlen);
+
+ printk(KERN_DEBUG "FrameID: %04x\n", tfid);
+ printk(KERN_DEBUG "TxStatus: %04x\n", txs);
+
+ printk(KERN_DEBUG "MaxNumMpdu: %04x\n", mnmpdu);
+ printk(KERN_DEBUG "MaxAggbyte: %04x\n", mabyte);
+ printk(KERN_DEBUG "MaxAggbyte_fb: %04x\n", mabyte_f);
+ printk(KERN_DEBUG "MinByte: %04x\n", mmbyte);
+
+ brcmu_format_hex(hexbuf, rtsph, sizeof(txh->RTSPhyHeader));
+ printk(KERN_DEBUG "RTS PLCP: %s ", hexbuf);
+ brcmu_format_hex(hexbuf, (u8 *) &rts, sizeof(txh->rts_frame));
+ printk(KERN_DEBUG "RTS Frame: %s", hexbuf);
+ printk(KERN_DEBUG "\n");
+}
+#endif /* defined(BCMDBG) */
+
+#if defined(BCMDBG)
+void brcms_c_print_rxh(struct d11rxhdr *rxh)
+{
+ u16 len = rxh->RxFrameSize;
+ u16 phystatus_0 = rxh->PhyRxStatus_0;
+ u16 phystatus_1 = rxh->PhyRxStatus_1;
+ u16 phystatus_2 = rxh->PhyRxStatus_2;
+ u16 phystatus_3 = rxh->PhyRxStatus_3;
+ u16 macstatus1 = rxh->RxStatus1;
+ u16 macstatus2 = rxh->RxStatus2;
+ char flagstr[64];
+ char lenbuf[20];
+ static const struct brcmu_bit_desc macstat_flags[] = {
+ {RXS_FCSERR, "FCSErr"},
+ {RXS_RESPFRAMETX, "Reply"},
+ {RXS_PBPRES, "PADDING"},
+ {RXS_DECATMPT, "DeCr"},
+ {RXS_DECERR, "DeCrErr"},
+ {RXS_BCNSENT, "Bcn"},
+ {0, NULL}
+ };
+
+ printk(KERN_DEBUG "Raw RxDesc:\n");
+ print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, rxh,
+ sizeof(struct d11rxhdr));
+
+ brcmu_format_flags(macstat_flags, macstatus1, flagstr, 64);
+
+ snprintf(lenbuf, sizeof(lenbuf), "0x%x", len);
+
+ printk(KERN_DEBUG "RxFrameSize: %6s (%d)%s\n", lenbuf, len,
+ (rxh->PhyRxStatus_0 & PRXS0_SHORTH) ? " short preamble" : "");
+ printk(KERN_DEBUG "RxPHYStatus: %04x %04x %04x %04x\n",
+ phystatus_0, phystatus_1, phystatus_2, phystatus_3);
+ printk(KERN_DEBUG "RxMACStatus: %x %s\n", macstatus1, flagstr);
+ printk(KERN_DEBUG "RXMACaggtype: %x\n",
+ (macstatus2 & RXS_AGGTYPE_MASK));
+ printk(KERN_DEBUG "RxTSFTime: %04x\n", rxh->RxTSFTime);
+}
+#endif /* defined(BCMDBG) */
+
+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));
+}
+
+/* Callback for device removed */
+
+/*
+ * Attempts to queue a packet onto a multiple-precedence queue,
+ * if necessary evicting a lower precedence packet from the queue.
+ *
+ * 'prec' is the precedence number that has already been mapped
+ * from the packet priority.
+ *
+ * Returns true if packet consumed (queued), false if not.
+ */
+static bool brcms_c_prec_enq(struct brcms_c_info *wlc, struct pktq *q,
+ struct sk_buff *pkt, int prec)
+{
+ return brcms_c_prec_enq_head(wlc, q, pkt, prec, false);
+}
+
+bool
+brcms_c_prec_enq_head(struct brcms_c_info *wlc, struct pktq *q,
+ struct sk_buff *pkt, int prec, bool head)
+{
+ struct sk_buff *p;
+ int eprec = -1; /* precedence to evict from */
+
+ /* Determine precedence from which to evict packet, if any */
+ if (pktq_pfull(q, prec))
+ eprec = prec;
+ else if (pktq_full(q)) {
+ p = brcmu_pktq_peek_tail(q, &eprec);
+ if (eprec > prec) {
+ wiphy_err(wlc->wiphy, "%s: Failing: eprec %d > prec %d"
+ "\n", __func__, eprec, prec);
+ return false;
+ }
+ }
+
+ /* Evict if needed */
+ if (eprec >= 0) {
+ bool discard_oldest;
+
+ discard_oldest = ac_bitmap_tst(0, eprec);
+
+ /* Refuse newer packet unless configured to discard oldest */
+ if (eprec == prec && !discard_oldest) {
+ wiphy_err(wlc->wiphy, "%s: No where to go, prec == %d"
+ "\n", __func__, prec);
+ return false;
+ }
+
+ /* Evict packet according to discard policy */
+ p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) :
+ brcmu_pktq_pdeq_tail(q, eprec);
+ brcmu_pkt_buf_free_skb(p);
+ }
+
+ /* Enqueue */
+ if (head)
+ p = brcmu_pktq_penq_head(q, prec, pkt);
+ else
+ p = brcmu_pktq_penq(q, prec, pkt);
+
+ return true;
+}
+
+void brcms_c_txq_enq(struct brcms_c_info *wlc, struct scb *scb,
+ struct sk_buff *sdu, uint prec)
+{
+ struct brcms_txq_info *qi = wlc->pkt_queue; /* Check me */
+ struct pktq *q = &qi->q;
+ int prio;
+
+ prio = sdu->priority;
+
+ if (!brcms_c_prec_enq(wlc, q, sdu, prec)) {
+ /*
+ * we might hit this condtion in case
+ * packet flooding from mac80211 stack
+ */
+ brcmu_pkt_buf_free_skb(sdu);
+ }
+}
+
+/*
+ * 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;
+
+ BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d\n",
+ wlc->pub->unit, rspec, 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);
+ /* 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)
+{
+ BCMMSG(wlc->wiphy, "wl%d: ratespec 0x%x, preamble_type %d\n",
+ wlc->pub->unit, rspec, 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)
+{
+ BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, "
+ "preamble_type %d\n", wlc->pub->unit, rspec, 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);
+
+ BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, dur %d\n",
+ wlc->pub->unit, ratespec, preamble_type, dur);
+
+ 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;
+}
+
+static u32
+mac80211_wlc_set_nrate(struct brcms_c_info *wlc, struct brcms_band *cur_band,
+ u32 int_val)
+{
+ 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) {
+ wiphy_err(wlc->wiphy, "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))) {
+ wiphy_err(wlc->wiphy, "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) {
+ BCMMSG(wlc->wiphy, "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))) {
+ wiphy_err(wlc->wiphy, "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)) {
+ wiphy_err(wlc->wiphy, "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)) {
+ wiphy_err(wlc->wiphy, "wl%d: %s: Invalid CCK\n",
+ wlc->pub->unit, __func__);
+ bcmerror = -EINVAL;
+ goto done;
+ }
+ } else {
+ wiphy_err(wlc->wiphy, "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)) {
+ wiphy_err(wlc->wiphy, "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;
+}
+
+/*
+ * 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 = brcmu_pkttotlen(p);
+ 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) {
+ wiphy_err(wlc->wiphy, "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]))) {
+ wiphy_err(wlc->wiphy, "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((char *)txh->RTSPhyHeader, 0, D11_PHY_HDR_LEN);
+ memset((char *)&txh->rts_frame, 0,
+ sizeof(struct ieee80211_rts));
+ memset((char *)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 {
+ wiphy_err(wlc->wiphy, "wl%d: %s txop invalid "
+ "for rate %d\n",
+ wlc->pub->unit, fifo_names[queue],
+ rspec2rate(rspec[0]));
+ }
+
+ if (dur > wlc->edcf_txop[ac])
+ wiphy_err(wlc->wiphy, "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;
+}
+
+void brcms_c_sendpkt_mac80211(struct brcms_c_info *wlc, struct sk_buff *sdu,
+ struct ieee80211_hw *hw)
+{
+ u8 prio;
+ uint fifo;
+ struct scb *scb = &wlc->pri_scb;
+ struct ieee80211_hdr *d11_header = (struct ieee80211_hdr *)(sdu->data);
+
+ /*
+ * 802.11 standard requires management traffic
+ * to go at highest priority
+ */
+ prio = ieee80211_is_data(d11_header->frame_control) ? sdu->priority :
+ MAXPRIO;
+ fifo = prio2fifo[prio];
+ if (brcms_c_d11hdrs_mac80211(wlc, hw, sdu, scb, 0, 1, fifo, 0))
+ return;
+ brcms_c_txq_enq(wlc, scb, sdu, BRCMS_PRIO_TO_PREC(prio));
+ brcms_c_send_q(wlc);
+}
+
+void brcms_c_send_q(struct brcms_c_info *wlc)
+{
+ struct sk_buff *pkt[DOT11_MAXNUMFRAGS];
+ int prec;
+ u16 prec_map;
+ int err = 0, i, count;
+ uint fifo;
+ struct brcms_txq_info *qi = wlc->pkt_queue;
+ struct pktq *q = &qi->q;
+ struct ieee80211_tx_info *tx_info;
+
+ prec_map = wlc->tx_prec_map;
+
+ /* Send all the enq'd pkts that we can.
+ * Dequeue packets with precedence with empty HW fifo only
+ */
+ while (prec_map && (pkt[0] = brcmu_pktq_mdeq(q, prec_map, &prec))) {
+ tx_info = IEEE80211_SKB_CB(pkt[0]);
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
+ err = brcms_c_sendampdu(wlc->ampdu, qi, pkt, prec);
+ } else {
+ count = 1;
+ err = brcms_c_prep_pdu(wlc, pkt[0], &fifo);
+ if (!err) {
+ for (i = 0; i < count; i++)
+ brcms_c_txfifo(wlc, fifo, pkt[i], true,
+ 1);
+ }
+ }
+
+ if (err == -EBUSY) {
+ brcmu_pktq_penq_head(q, prec, pkt[0]);
+ /*
+ * If send failed due to any other reason than a
+ * change in HW FIFO condition, quit. Otherwise,
+ * read the new prec_map!
+ */
+ if (prec_map == wlc->tx_prec_map)
+ break;
+ prec_map = wlc->tx_prec_map;
+ }
+ }
+}
+
+void
+brcms_c_txfifo(struct brcms_c_info *wlc, uint fifo, struct sk_buff *p,
+ bool commit, s8 txpktpend)
+{
+ u16 frameid = INVALIDFID;
+ struct d11txh *txh;
+
+ txh = (struct d11txh *) (p->data);
+
+ /* 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);
+
+ /*
+ * Bump up pending count for if not using rpc. If rpc is
+ * used, this will be handled in brcms_b_txfifo()
+ */
+ if (commit) {
+ wlc->core->txpktpend[fifo] += txpktpend;
+ BCMMSG(wlc->wiphy, "pktpend inc %d to %d\n",
+ txpktpend, wlc->core->txpktpend[fifo]);
+ }
+
+ /* 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);
+ }
+
+ if (dma_txfast(wlc->hw->di[fifo], p, commit) < 0)
+ wiphy_err(wlc->wiphy, "txfifo: fatal, toss frames !!!\n");
+}
+
+/*
+ * 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:
+ wiphy_err(wlc->wiphy,
+ "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);
+}
+
+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;
+}
+
+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) {
+ wiphy_err(wlc->wiphy, "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) {
+ wiphy_err(wlc->wiphy, "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;
+}
+
+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;
+}
+
+void brcms_c_tbtt(struct brcms_c_info *wlc)
+{
+ if (!wlc->bsscfg->BSS)
+ /*
+ * DirFrmQ is now valid...defer setting until end
+ * of ATIM window
+ */
+ wlc->qvalid |= MCMD_DIRFRMQVAL;
+}
+
+void
+brcms_c_txfifo_complete(struct brcms_c_info *wlc, uint fifo, s8 txpktpend)
+{
+ wlc->core->txpktpend[fifo] -= txpktpend;
+ BCMMSG(wlc->wiphy, "pktpend dec %d to %d\n", txpktpend,
+ wlc->core->txpktpend[fifo]);
+
+ /* There is more room; mark precedences related to this FIFO sendable */
+ wlc->tx_prec_map |= wlc->fifo2prec_map[fifo];
+
+ /* figure out which bsscfg is being worked on... */
+}
+
+/* Update beacon listen interval in shared memory */
+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 d11regs __iomem *regs = wlc_hw->regs;
+
+ /* read the tsf timer low, then high to get an atomic read */
+ *tsf_l_ptr = R_REG(®s->tsf_timerlow);
+ *tsf_h_ptr = R_REG(®s->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_MPDU;
+
+ channel = BRCMS_CHAN_CHANNEL(rxh->RxChan);
+
+ if (channel > 14) {
+ rx_status->band = IEEE80211_BAND_5GHZ;
+ rx_status->freq = ieee80211_ofdm_chan_to_freq(
+ WF_CHAN_FACTOR_5_G/2, channel);
+
+ } else {
+ rx_status->band = IEEE80211_BAND_2GHZ;
+ rx_status->freq = ieee80211_dsss_chan_to_freq(channel);
+ }
+
+ 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:
+ wiphy_err(wlc->wiphy, "%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 {
+ wiphy_err(wlc->wiphy, "%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;
+ wiphy_err(wlc->wiphy, "%s: RX_FLAG_FAILED_PLCP_CRC\n",
+ __func__);
+ }
+ if (rxh->RxStatus1 & RXS_FCSERR) {
+ rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
+ wiphy_err(wlc->wiphy, "%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;
+
+ 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);
+
+ memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status));
+ ieee80211_rx_irqsafe(wlc->pub->ieee_hw, 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.
+ */
+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;
+
+ BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
+
+ /* 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) {
+ wiphy_err(wlc->wiphy, "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->pub->mac80211_state & MAC80211_PROMISC_BCNS) {
+ wiphy_err(wlc->wiphy, "FCSERR while scanning******* -"
+ " tossing\n");
+ goto toss;
+ } else {
+ wiphy_err(wlc->wiphy, "RCSERR!!!\n");
+ 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);
+}
+
+/* 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;
+
+ BCMMSG(wlc->wiphy, "wl%d: rate %d, len%d\n",
+ wlc->pub->unit, rspec2rate(ratespec), mac_len);
+
+ 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;
+}
+
+/*
+ * calculate frame duration of a given rate and length, return
+ * time in usec unit
+ */
+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) {
+ wiphy_err(wlc->wiphy, "wl%d: WAR: using rate of 1 mbps\n",
+ wlc->pub->unit);
+ rate = BRCM_RATE_1M;
+ }
+
+ BCMMSG(wlc->wiphy, "wl%d: rspec 0x%x, preamble_type %d, len%d\n",
+ wlc->pub->unit, ratespec, preamble_type, mac_len);
+
+ 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;
+}
+
+/* derive wlc->band->basic_rate[] table from 'rateset' */
+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) {
+ wiphy_err(wlc->wiphy, "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_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;
+}
+
+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);
+ }
+}
+
+/*
+ * Return true if the specified rate is supported by the specified band.
+ * BRCM_BAND_AUTO indicates the current band.
+ */
+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)
+ wiphy_err(wlc->wiphy, "wl%d: valid_rate: rate spec 0x%x "
+ "not in hw_rateset\n", wlc->pub->unit, rspec);
+
+ return false;
+}
+
+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);
+ }
+}
+
+/* Max buffering needed for beacon template/prb resp template is 142 bytes.
+ *
+ * PLCP header is 6 bytes.
+ * 802.11 A3 header is 24 bytes.
+ * Max beacon frame body template length is 112 bytes.
+ * Max probe resp frame body template length is 110 bytes.
+ *
+ * *len on input contains the max length of the packet available.
+ *
+ * The *len value is set to the number of bytes in buf used, and starts
+ * with the PLCP and included up to, but not including, the 4 byte FCS.
+ */
+static void
+brcms_c_bcn_prb_template(struct brcms_c_info *wlc, u16 type,
+ u32 bcn_rspec,
+ struct brcms_bss_cfg *cfg, u16 *buf, int *len)
+{
+ static const u8 ether_bcast[ETH_ALEN] = {255, 255, 255, 255, 255, 255};
+ struct cck_phy_hdr *plcp;
+ struct ieee80211_mgmt *h;
+ int hdr_len, body_len;
+
+ hdr_len = D11_PHY_HDR_LEN + DOT11_MAC_HDR_LEN;
+
+ /* calc buffer size provided for frame body */
+ body_len = *len - hdr_len;
+ /* return actual size */
+ *len = hdr_len + body_len;
+
+ /* format PHY and MAC headers */
+ memset((char *)buf, 0, hdr_len);
+
+ plcp = (struct cck_phy_hdr *) buf;
+
+ /*
+ * PLCP for Probe Response frames are filled in from
+ * core's rate table
+ */
+ if (type == IEEE80211_STYPE_BEACON)
+ /* fill in PLCP */
+ brcms_c_compute_plcp(wlc, bcn_rspec,
+ (DOT11_MAC_HDR_LEN + body_len + FCS_LEN),
+ (u8 *) plcp);
+
+ /* "Regular" and 16 MBSS but not for 4 MBSS */
+ /* Update the phytxctl for the beacon based on the rspec */
+ brcms_c_beacon_phytxctl_txant_upd(wlc, bcn_rspec);
+
+ h = (struct ieee80211_mgmt *)&plcp[1];
+
+ /* fill in 802.11 header */
+ h->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | type);
+
+ /* DUR is 0 for multicast bcn, or filled in by MAC for prb resp */
+ /* A1 filled in by MAC for prb resp, broadcast for bcn */
+ if (type == IEEE80211_STYPE_BEACON)
+ memcpy(&h->da, ðer_bcast, ETH_ALEN);
+ memcpy(&h->sa, &cfg->cur_etheraddr, ETH_ALEN);
+ memcpy(&h->bssid, &cfg->BSSID, ETH_ALEN);
+
+ /* SEQ filled in by MAC */
+}
+
+int brcms_c_get_header_len(void)
+{
+ return TXOFF;
+}
+
+/*
+ * Update all beacons for the system.
+ */
+void brcms_c_update_beacon(struct brcms_c_info *wlc)
+{
+ struct brcms_bss_cfg *bsscfg = wlc->bsscfg;
+
+ if (bsscfg->up && !bsscfg->BSS)
+ /* Clear the soft intmask */
+ wlc->defmacintmask &= ~MI_BCNTPL;
+}
+
+/* Write ssid into shared memory */
+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);
+}
+
+void brcms_c_update_probe_resp(struct brcms_c_info *wlc, bool suspend)
+{
+ struct brcms_bss_cfg *bsscfg = wlc->bsscfg;
+
+ /* update AP or IBSS probe responses */
+ if (bsscfg->up && !bsscfg->BSS)
+ brcms_c_bss_update_probe_resp(wlc, bsscfg, suspend);
+}
+
+void
+brcms_c_bss_update_probe_resp(struct brcms_c_info *wlc,
+ struct brcms_bss_cfg *cfg,
+ bool suspend)
+{
+ u16 prb_resp[BCN_TMPL_LEN / 2];
+ int len = BCN_TMPL_LEN;
+
+ /*
+ * write the probe response to hardware, or save in
+ * the config structure
+ */
+
+ /* create the probe response template */
+ brcms_c_bcn_prb_template(wlc, IEEE80211_STYPE_PROBE_RESP, 0,
+ cfg, prb_resp, &len);
+
+ if (suspend)
+ brcms_c_suspend_mac_and_wait(wlc);
+
+ /* write the probe response into the template region */
+ brcms_b_write_template_ram(wlc->hw, T_PRS_TPL_BASE,
+ (len + 3) & ~3, prb_resp);
+
+ /* 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.
+ */
+ len += (-D11_PHY_HDR_LEN + FCS_LEN);
+ brcms_c_mod_prb_rsp_rate_table(wlc, (u16) len);
+
+ if (suspend)
+ brcms_c_enable_mac(wlc);
+}
+
+/* prepares pdu for transmission. returns BCM error codes */
+int brcms_c_prep_pdu(struct brcms_c_info *wlc, struct sk_buff *pdu, uint *fifop)
+{
+ uint fifo;
+ struct d11txh *txh;
+ struct ieee80211_hdr *h;
+ struct scb *scb;
+
+ txh = (struct d11txh *) (pdu->data);
+ h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
+
+ /* get the pkt queue info. This was put at brcms_c_sendctl or
+ * brcms_c_send for PDU */
+ fifo = le16_to_cpu(txh->TxFrameID) & TXFID_QUEUE_MASK;
+
+ scb = NULL;
+
+ *fifop = fifo;
+
+ /* return if insufficient dma resources */
+ if (*wlc->core->txavail[fifo] < MAX_DMA_SEGS) {
+ /* Mark precedences related to this FIFO, unsendable */
+ /* A fifo is full. Clear precedences related to that FIFO */
+ wlc->tx_prec_map &= ~(wlc->fifo2prec_map[fifo]);
+ return -EBUSY;
+ }
+ return 0;
+}
+
+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);
+}
+
+/* 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
+ */
+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);
+}
+
+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);
+}
+
+/* check for the particular priority flow control bit being set */
+bool
+brcms_c_txflowcontrol_prio_isset(struct brcms_c_info *wlc,
+ struct brcms_txq_info *q,
+ int prio)
+{
+ uint prio_mask;
+
+ if (prio == ALLPRIO)
+ prio_mask = TXQ_STOP_FOR_PRIOFC_MASK;
+ else
+ prio_mask = NBITVAL(prio);
+
+ return (q->stopped & prio_mask) == prio_mask;
+}
+
+/* propagate the flow control to all interfaces using the given tx queue */
+void brcms_c_txflowcontrol(struct brcms_c_info *wlc,
+ struct brcms_txq_info *qi,
+ bool on, int prio)
+{
+ uint prio_bits;
+ uint cur_bits;
+
+ BCMMSG(wlc->wiphy, "flow control kicks in\n");
+
+ if (prio == ALLPRIO)
+ prio_bits = TXQ_STOP_FOR_PRIOFC_MASK;
+ else
+ prio_bits = NBITVAL(prio);
+
+ cur_bits = qi->stopped & prio_bits;
+
+ /* Check for the case of no change and return early
+ * Otherwise update the bit and continue
+ */
+ if (on) {
+ if (cur_bits == prio_bits)
+ return;
+
+ mboolset(qi->stopped, prio_bits);
+ } else {
+ if (cur_bits == 0)
+ return;
+
+ mboolclr(qi->stopped, prio_bits);
+ }
+
+ /* If there is a flow control override we will not change the external
+ * flow control state.
+ */
+ if (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK)
+ return;
+
+ brcms_c_txflowcontrol_signal(wlc, qi, on, prio);
+}
+
+void
+brcms_c_txflowcontrol_override(struct brcms_c_info *wlc,
+ struct brcms_txq_info *qi,
+ bool on, uint override)
+{
+ uint prev_override;
+
+ prev_override = (qi->stopped & ~TXQ_STOP_FOR_PRIOFC_MASK);
+
+ /* Update the flow control bits and do an early return if there is
+ * no change in the external flow control state.
+ */
+ if (on) {
+ mboolset(qi->stopped, override);
+ /* if there was a previous override bit on, then setting this
+ * makes no difference.
+ */
+ if (prev_override)
+ return;
+
+ brcms_c_txflowcontrol_signal(wlc, qi, ON, ALLPRIO);
+ } else {
+ mboolclr(qi->stopped, override);
+ /* clearing an override bit will only make a difference for
+ * flow control if it was the only bit set. For any other
+ * override setting, just return
+ */
+ if (prev_override != override)
+ return;
+
+ if (qi->stopped == 0) {
+ brcms_c_txflowcontrol_signal(wlc, qi, OFF, ALLPRIO);
+ } else {
+ int prio;
+
+ for (prio = MAXPRIO; prio >= 0; prio--) {
+ if (!mboolisset(qi->stopped, NBITVAL(prio)))
+ brcms_c_txflowcontrol_signal(
+ wlc, qi, OFF, prio);
+ }
+ }
+ }
+}
+
+/*
+ * 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;
+ wlc->bsscfg->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;
+}
+
+void brcms_c_wait_for_tx_completion(struct brcms_c_info *wlc, bool drop)
+{
+ /* flush packet queue when requested */
+ if (drop)
+ brcmu_pktq_flush(&wlc->pkt_queue->q, false, NULL, NULL);
+
+ /* wait for queue and DMA fifos to run dry */
+ while (!pktq_empty(&wlc->pkt_queue->q) || brcms_txpktpendtot(wlc) > 0)
+ brcms_msleep(wlc->wl, 1);
+}
+
+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);
+}
+
+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);
+}
+
+void brcms_c_set_radio_mpc(struct brcms_c_info *wlc, bool mpc)
+{
+ wlc->mpc = mpc;
+ brcms_c_radio_mpc_upd(wlc);
+}