/* * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting * Copyright (c) 2002-2008 Atheros Communications, Inc. * * 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. * * $FreeBSD$ */ #include "opt_ah.h" #include "ah.h" #include "ah_internal.h" #include "ar5212/ar5212.h" #include "ar5212/ar5212reg.h" #include "ar5212/ar5212desc.h" /* * Get the RXDP. */ uint32_t ar5212GetRxDP(struct ath_hal *ath) { return OS_REG_READ(ath, AR_RXDP); } /* * Set the RxDP. */ void ar5212SetRxDP(struct ath_hal *ah, uint32_t rxdp) { OS_REG_WRITE(ah, AR_RXDP, rxdp); HALASSERT(OS_REG_READ(ah, AR_RXDP) == rxdp); } /* * Set Receive Enable bits. */ void ar5212EnableReceive(struct ath_hal *ah) { OS_REG_WRITE(ah, AR_CR, AR_CR_RXE); } /* * Stop Receive at the DMA engine */ HAL_BOOL ar5212StopDmaReceive(struct ath_hal *ah) { OS_MARK(ah, AH_MARK_RX_CTL, AH_MARK_RX_CTL_DMA_STOP); OS_REG_WRITE(ah, AR_CR, AR_CR_RXD); /* Set receive disable bit */ if (!ath_hal_wait(ah, AR_CR, AR_CR_RXE, 0)) { OS_MARK(ah, AH_MARK_RX_CTL, AH_MARK_RX_CTL_DMA_STOP_ERR); #ifdef AH_DEBUG ath_hal_printf(ah, "%s: dma failed to stop in 10ms\n" "AR_CR=0x%08x\nAR_DIAG_SW=0x%08x\n", __func__, OS_REG_READ(ah, AR_CR), OS_REG_READ(ah, AR_DIAG_SW)); #endif return AH_FALSE; } else { return AH_TRUE; } } /* * Start Transmit at the PCU engine (unpause receive) */ void ar5212StartPcuReceive(struct ath_hal *ah) { struct ath_hal_private *ahp = AH_PRIVATE(ah); OS_MARK(ah, AH_MARK_RX_CTL, AH_MARK_RX_CTL_PCU_START); OS_REG_WRITE(ah, AR_DIAG_SW, OS_REG_READ(ah, AR_DIAG_SW) &~ AR_DIAG_RX_DIS); ar5212EnableMibCounters(ah); /* NB: restore current settings */ ar5212AniReset(ah, ahp->ah_curchan, ahp->ah_opmode, AH_TRUE); } /* * Stop Transmit at the PCU engine (pause receive) */ void ar5212StopPcuReceive(struct ath_hal *ah) { OS_MARK(ah, AH_MARK_RX_CTL, AH_MARK_RX_CTL_PCU_STOP); OS_REG_WRITE(ah, AR_DIAG_SW, OS_REG_READ(ah, AR_DIAG_SW) | AR_DIAG_RX_DIS); ar5212DisableMibCounters(ah); } /* * Set multicast filter 0 (lower 32-bits) * filter 1 (upper 32-bits) */ void ar5212SetMulticastFilter(struct ath_hal *ah, uint32_t filter0, uint32_t filter1) { OS_REG_WRITE(ah, AR_MCAST_FIL0, filter0); OS_REG_WRITE(ah, AR_MCAST_FIL1, filter1); } /* * Clear multicast filter by index */ HAL_BOOL ar5212ClrMulticastFilterIndex(struct ath_hal *ah, uint32_t ix) { uint32_t val; if (ix >= 64) return AH_FALSE; if (ix >= 32) { val = OS_REG_READ(ah, AR_MCAST_FIL1); OS_REG_WRITE(ah, AR_MCAST_FIL1, (val &~ (1<<(ix-32)))); } else { val = OS_REG_READ(ah, AR_MCAST_FIL0); OS_REG_WRITE(ah, AR_MCAST_FIL0, (val &~ (1<= 64) return AH_FALSE; if (ix >= 32) { val = OS_REG_READ(ah, AR_MCAST_FIL1); OS_REG_WRITE(ah, AR_MCAST_FIL1, (val | (1<<(ix-32)))); } else { val = OS_REG_READ(ah, AR_MCAST_FIL0); OS_REG_WRITE(ah, AR_MCAST_FIL0, (val | (1<ah_caps.halBssidMatchSupport && (AH5212(ah)->ah_miscMode & AR_MISC_MODE_BSSID_MATCH_FORCE)) bits |= HAL_RX_FILTER_BSSID; return bits; } /* * Set the receive filter. */ void ar5212SetRxFilter(struct ath_hal *ah, uint32_t bits) { struct ath_hal_5212 *ahp = AH5212(ah); uint32_t phybits; OS_REG_WRITE(ah, AR_RX_FILTER, bits &~ (HAL_RX_FILTER_PHYRADAR|HAL_RX_FILTER_PHYERR| HAL_RX_FILTER_BSSID)); phybits = 0; if (bits & HAL_RX_FILTER_PHYRADAR) phybits |= AR_PHY_ERR_RADAR; if (bits & HAL_RX_FILTER_PHYERR) phybits |= AR_PHY_ERR_OFDM_TIMING | AR_PHY_ERR_CCK_TIMING; OS_REG_WRITE(ah, AR_PHY_ERR, phybits); if (phybits) { OS_REG_WRITE(ah, AR_RXCFG, OS_REG_READ(ah, AR_RXCFG) | AR_RXCFG_ZLFDMA); } else { OS_REG_WRITE(ah, AR_RXCFG, OS_REG_READ(ah, AR_RXCFG) &~ AR_RXCFG_ZLFDMA); } if (AH_PRIVATE(ah)->ah_caps.halBssidMatchSupport) { if (bits & HAL_RX_FILTER_BSSID) ahp->ah_miscMode |= AR_MISC_MODE_BSSID_MATCH_FORCE; else ahp->ah_miscMode &= ~AR_MISC_MODE_BSSID_MATCH_FORCE; OS_REG_WRITE(ah, AR_MISC_MODE, OS_REG_READ(ah, AR_MISC_MODE) | ahp->ah_miscMode); } } /* * Initialize RX descriptor, by clearing the status and setting * the size (and any other flags). */ HAL_BOOL ar5212SetupRxDesc(struct ath_hal *ah, struct ath_desc *ds, uint32_t size, u_int flags) { struct ar5212_desc *ads = AR5212DESC(ds); HALASSERT((size &~ AR_BufLen) == 0); ads->ds_ctl0 = 0; ads->ds_ctl1 = size & AR_BufLen; if (flags & HAL_RXDESC_INTREQ) ads->ds_ctl1 |= AR_RxInterReq; ads->ds_rxstatus0 = ads->ds_rxstatus1 = 0; return AH_TRUE; } /* * Process an RX descriptor, and return the status to the caller. * Copy some hardware specific items into the software portion * of the descriptor. * * NB: the caller is responsible for validating the memory contents * of the descriptor (e.g. flushing any cached copy). */ HAL_STATUS ar5212ProcRxDesc(struct ath_hal *ah, struct ath_desc *ds, uint32_t pa, struct ath_desc *nds, uint64_t tsf, struct ath_rx_status *rs) { struct ar5212_desc *ads = AR5212DESC(ds); struct ar5212_desc *ands = AR5212DESC(nds); if ((ads->ds_rxstatus1 & AR_Done) == 0) return HAL_EINPROGRESS; /* * Given the use of a self-linked tail be very sure that the hw is * done with this descriptor; the hw may have done this descriptor * once and picked it up again...make sure the hw has moved on. */ if ((ands->ds_rxstatus1&AR_Done) == 0 && OS_REG_READ(ah, AR_RXDP) == pa) return HAL_EINPROGRESS; rs->rs_datalen = ads->ds_rxstatus0 & AR_DataLen; rs->rs_tstamp = MS(ads->ds_rxstatus1, AR_RcvTimestamp); rs->rs_status = 0; /* XXX what about KeyCacheMiss? */ rs->rs_rssi = MS(ads->ds_rxstatus0, AR_RcvSigStrength); /* discard invalid h/w rssi data */ if (rs->rs_rssi == -128) rs->rs_rssi = 0; if (ads->ds_rxstatus1 & AR_KeyIdxValid) rs->rs_keyix = MS(ads->ds_rxstatus1, AR_KeyIdx); else rs->rs_keyix = HAL_RXKEYIX_INVALID; /* NB: caller expected to do rate table mapping */ rs->rs_rate = MS(ads->ds_rxstatus0, AR_RcvRate); rs->rs_antenna = MS(ads->ds_rxstatus0, AR_RcvAntenna); rs->rs_more = (ads->ds_rxstatus0 & AR_More) ? 1 : 0; if ((ads->ds_rxstatus1 & AR_FrmRcvOK) == 0) { /* * These four bits should not be set together. The * 5212 spec states a Michael error can only occur if * DecryptCRCErr not set (and TKIP is used). Experience * indicates however that you can also get Michael errors * when a CRC error is detected, but these are specious. * Consequently we filter them out here so we don't * confuse and/or complicate drivers. */ if (ads->ds_rxstatus1 & AR_CRCErr) rs->rs_status |= HAL_RXERR_CRC; else if (ads->ds_rxstatus1 & AR_PHYErr) { u_int phyerr; rs->rs_status |= HAL_RXERR_PHY; phyerr = MS(ads->ds_rxstatus1, AR_PHYErrCode); rs->rs_phyerr = phyerr; if (!AH5212(ah)->ah_hasHwPhyCounters && phyerr != HAL_PHYERR_RADAR) ar5212AniPhyErrReport(ah, rs); } else if (ads->ds_rxstatus1 & AR_DecryptCRCErr) rs->rs_status |= HAL_RXERR_DECRYPT; else if (ads->ds_rxstatus1 & AR_MichaelErr) rs->rs_status |= HAL_RXERR_MIC; } return HAL_OK; }