From: Roland Vossen Date: Tue, 1 Feb 2011 09:32:30 +0000 (+0100) Subject: staging: brcm80211: removed 32 bit DMA functions X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6b4ba667b7c4bb396e85e99fccbb4c92606f9209;p=linux-beck.git staging: brcm80211: removed 32 bit DMA functions Code cleanup. Removed unused functions. Signed-off-by: Roland Vossen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/brcm80211/util/hnddma.c b/drivers/staging/brcm80211/util/hnddma.c index ae82e6bd0122..b5dd4cd22918 100644 --- a/drivers/staging/brcm80211/util/hnddma.c +++ b/drivers/staging/brcm80211/util/hnddma.c @@ -213,28 +213,6 @@ static void *dma_ringalloc(struct osl_info *osh, u32 boundary, uint size, u16 *alignbits, uint *alloced, dmaaddr_t *descpa, osldma_t **dmah); -/* Prototypes for 32-bit routines */ -static bool dma32_alloc(dma_info_t *di, uint direction); -static bool dma32_txreset(dma_info_t *di); -static bool dma32_rxreset(dma_info_t *di); -static bool dma32_txsuspendedidle(dma_info_t *di); -static int dma32_txfast(dma_info_t *di, struct sk_buff *p0, bool commit); -static void *dma32_getnexttxp(dma_info_t *di, txd_range_t range); -static void *dma32_getnextrxp(dma_info_t *di, bool forceall); -static void dma32_txrotate(dma_info_t *di); -static bool dma32_rxidle(dma_info_t *di); -static void dma32_txinit(dma_info_t *di); -static bool dma32_txenabled(dma_info_t *di); -static void dma32_txsuspend(dma_info_t *di); -static void dma32_txresume(dma_info_t *di); -static bool dma32_txsuspended(dma_info_t *di); -static void dma32_txreclaim(dma_info_t *di, txd_range_t range); -static bool dma32_txstopped(dma_info_t *di); -static bool dma32_rxstopped(dma_info_t *di); -static bool dma32_rxenabled(dma_info_t *di); - -static bool _dma32_addrext(struct osl_info *osh, dma32regs_t *dma32regs); - /* Prototypes for 64-bit routines */ static bool dma64_alloc(dma_info_t *di, uint direction); static bool dma64_txreset(dma_info_t *di); @@ -308,53 +286,6 @@ const di_fcn_t dma64proc = { 39 }; -static const di_fcn_t dma32proc = { - (di_detach_t) _dma_detach, - (di_txinit_t) dma32_txinit, - (di_txreset_t) dma32_txreset, - (di_txenabled_t) dma32_txenabled, - (di_txsuspend_t) dma32_txsuspend, - (di_txresume_t) dma32_txresume, - (di_txsuspended_t) dma32_txsuspended, - (di_txsuspendedidle_t) dma32_txsuspendedidle, - (di_txfast_t) dma32_txfast, - NULL, - NULL, - (di_txstopped_t) dma32_txstopped, - (di_txreclaim_t) dma32_txreclaim, - (di_getnexttxp_t) dma32_getnexttxp, - (di_peeknexttxp_t) _dma_peeknexttxp, - (di_txblock_t) _dma_txblock, - (di_txunblock_t) _dma_txunblock, - (di_txactive_t) _dma_txactive, - (di_txrotate_t) dma32_txrotate, - - (di_rxinit_t) _dma_rxinit, - (di_rxreset_t) dma32_rxreset, - (di_rxidle_t) dma32_rxidle, - (di_rxstopped_t) dma32_rxstopped, - (di_rxenable_t) _dma_rxenable, - (di_rxenabled_t) dma32_rxenabled, - (di_rx_t) _dma_rx, - (di_rxfill_t) _dma_rxfill, - (di_rxreclaim_t) _dma_rxreclaim, - (di_getnextrxp_t) _dma_getnextrxp, - (di_peeknextrxp_t) _dma_peeknextrxp, - (di_rxparam_get_t) _dma_rx_param_get, - - (di_fifoloopbackenable_t) _dma_fifoloopbackenable, - (di_getvar_t) _dma_getvar, - (di_counterreset_t) _dma_counterreset, - (di_ctrlflags_t) _dma_ctrlflags, - NULL, - NULL, - NULL, - (di_rxactive_t) _dma_rxactive, - (di_txpending_t) _dma_txpending, - (di_txcommitted_t) _dma_txcommitted, - 39 -}; - struct hnddma_pub *dma_attach(struct osl_info *osh, char *name, si_t *sih, void *dmaregstx, void *dmaregsrx, uint ntxd, uint nrxd, uint rxbufsize, int rxextheadroom, @@ -543,32 +474,6 @@ struct hnddma_pub *dma_attach(struct osl_info *osh, char *name, si_t *sih, return NULL; } -/* init the tx or rx descriptor */ -static inline void -dma32_dd_upd(dma_info_t *di, dma32dd_t *ddring, dmaaddr_t pa, uint outidx, - u32 *flags, u32 bufcount) -{ - /* dma32 uses 32-bit control to fit both flags and bufcounter */ - *flags = *flags | (bufcount & CTRL_BC_MASK); - - if ((di->dataoffsetlow == 0) || !(PHYSADDRLO(pa) & PCI32ADDR_HIGH)) { - W_SM(&ddring[outidx].addr, - BUS_SWAP32(PHYSADDRLO(pa) + di->dataoffsetlow)); - W_SM(&ddring[outidx].ctrl, BUS_SWAP32(*flags)); - } else { - /* address extension */ - u32 ae; - ASSERT(di->addrext); - ae = (PHYSADDRLO(pa) & PCI32ADDR_HIGH) >> PCI32ADDR_HIGH_SHIFT; - PHYSADDRLO(pa) &= ~PCI32ADDR_HIGH; - - *flags |= (ae << CTRL_AE_SHIFT); - W_SM(&ddring[outidx].addr, - BUS_SWAP32(PHYSADDRLO(pa) + di->dataoffsetlow)); - W_SM(&ddring[outidx].ctrl, BUS_SWAP32(*flags)); - } -} - /* Check for odd number of 1's */ static inline u32 parity32(u32 data) { @@ -629,16 +534,6 @@ dma64_dd_upd(dma_info_t *di, dma64dd_t *ddring, dmaaddr_t pa, uint outidx, } } -static bool _dma32_addrext(struct osl_info *osh, dma32regs_t *dma32regs) -{ - u32 w; - - OR_REG(osh, &dma32regs->control, XC_AE); - w = R_REG(osh, &dma32regs->control); - AND_REG(osh, &dma32regs->control, ~XC_AE); - return (w & XC_AE) == XC_AE; -} - static bool _dma_alloc(dma_info_t *di, uint direction) { return dma64_alloc(di, direction); @@ -1171,11 +1066,6 @@ static unsigned long _dma_getvar(dma_info_t *di, const char *name) return 0; } -void dma_txpioloopback(struct osl_info *osh, dma32regs_t *regs) -{ - OR_REG(osh, ®s->control, XC_LE); -} - static u8 dma_align_sizetobits(uint size) { @@ -1218,562 +1108,6 @@ static void *dma_ringalloc(struct osl_info *osh, u32 boundary, uint size, return va; } -/* 32-bit DMA functions */ - -static void dma32_txinit(dma_info_t *di) -{ - u32 control = XC_XE; - - DMA_TRACE(("%s: dma_txinit\n", di->name)); - - if (di->ntxd == 0) - return; - - di->txin = di->txout = 0; - di->hnddma.txavail = di->ntxd - 1; - - /* clear tx descriptor ring */ - memset((void *)di->txd32, '\0', (di->ntxd * sizeof(dma32dd_t))); - - if ((di->hnddma.dmactrlflags & DMA_CTRL_PEN) == 0) - control |= XC_PD; - W_REG(di->osh, &di->d32txregs->control, control); - _dma_ddtable_init(di, DMA_TX, di->txdpa); -} - -static bool dma32_txenabled(dma_info_t *di) -{ - u32 xc; - - /* If the chip is dead, it is not enabled :-) */ - xc = R_REG(di->osh, &di->d32txregs->control); - return (xc != 0xffffffff) && (xc & XC_XE); -} - -static void dma32_txsuspend(dma_info_t *di) -{ - DMA_TRACE(("%s: dma_txsuspend\n", di->name)); - - if (di->ntxd == 0) - return; - - OR_REG(di->osh, &di->d32txregs->control, XC_SE); -} - -static void dma32_txresume(dma_info_t *di) -{ - DMA_TRACE(("%s: dma_txresume\n", di->name)); - - if (di->ntxd == 0) - return; - - AND_REG(di->osh, &di->d32txregs->control, ~XC_SE); -} - -static bool dma32_txsuspended(dma_info_t *di) -{ - return (di->ntxd == 0) - || ((R_REG(di->osh, &di->d32txregs->control) & XC_SE) == XC_SE); -} - -static void dma32_txreclaim(dma_info_t *di, txd_range_t range) -{ - void *p; - - DMA_TRACE(("%s: dma_txreclaim %s\n", di->name, - (range == HNDDMA_RANGE_ALL) ? "all" : - ((range == - HNDDMA_RANGE_TRANSMITTED) ? "transmitted" : - "transfered"))); - - if (di->txin == di->txout) - return; - - while ((p = dma32_getnexttxp(di, range))) - pkt_buf_free_skb(di->osh, p, true); -} - -static bool dma32_txstopped(dma_info_t *di) -{ - return ((R_REG(di->osh, &di->d32txregs->status) & XS_XS_MASK) == - XS_XS_STOPPED); -} - -static bool dma32_rxstopped(dma_info_t *di) -{ - return ((R_REG(di->osh, &di->d32rxregs->status) & RS_RS_MASK) == - RS_RS_STOPPED); -} - -static bool dma32_alloc(dma_info_t *di, uint direction) -{ - uint size; - uint ddlen; - void *va; - uint alloced; - u16 align; - u16 align_bits; - - ddlen = sizeof(dma32dd_t); - - size = (direction == DMA_TX) ? (di->ntxd * ddlen) : (di->nrxd * ddlen); - - alloced = 0; - align_bits = di->dmadesc_align; - align = (1 << align_bits); - - if (direction == DMA_TX) { - va = dma_ringalloc(di->osh, D32RINGALIGN, size, &align_bits, - &alloced, &di->txdpaorig, &di->tx_dmah); - if (va == NULL) { - DMA_ERROR(("%s: dma_alloc: DMA_ALLOC_CONSISTENT(ntxd) failed\n", di->name)); - return false; - } - - PHYSADDRHISET(di->txdpa, 0); - ASSERT(PHYSADDRHI(di->txdpaorig) == 0); - di->txd32 = (dma32dd_t *) roundup((unsigned long)va, align); - di->txdalign = - (uint) ((s8 *)di->txd32 - (s8 *) va); - - PHYSADDRLOSET(di->txdpa, - PHYSADDRLO(di->txdpaorig) + di->txdalign); - /* Make sure that alignment didn't overflow */ - ASSERT(PHYSADDRLO(di->txdpa) >= PHYSADDRLO(di->txdpaorig)); - - di->txdalloc = alloced; - ASSERT(IS_ALIGNED((unsigned long)di->txd32, align)); - } else { - va = dma_ringalloc(di->osh, D32RINGALIGN, size, &align_bits, - &alloced, &di->rxdpaorig, &di->rx_dmah); - if (va == NULL) { - DMA_ERROR(("%s: dma_alloc: DMA_ALLOC_CONSISTENT(nrxd) failed\n", di->name)); - return false; - } - - PHYSADDRHISET(di->rxdpa, 0); - ASSERT(PHYSADDRHI(di->rxdpaorig) == 0); - di->rxd32 = (dma32dd_t *) roundup((unsigned long)va, align); - di->rxdalign = - (uint) ((s8 *)di->rxd32 - (s8 *) va); - - PHYSADDRLOSET(di->rxdpa, - PHYSADDRLO(di->rxdpaorig) + di->rxdalign); - /* Make sure that alignment didn't overflow */ - ASSERT(PHYSADDRLO(di->rxdpa) >= PHYSADDRLO(di->rxdpaorig)); - di->rxdalloc = alloced; - ASSERT(IS_ALIGNED((unsigned long)di->rxd32, align)); - } - - return true; -} - -static bool dma32_txreset(dma_info_t *di) -{ - u32 status; - - if (di->ntxd == 0) - return true; - - /* suspend tx DMA first */ - W_REG(di->osh, &di->d32txregs->control, XC_SE); - SPINWAIT(((status = - (R_REG(di->osh, &di->d32txregs->status) & XS_XS_MASK)) - != XS_XS_DISABLED) && (status != XS_XS_IDLE) - && (status != XS_XS_STOPPED), (10000)); - - W_REG(di->osh, &di->d32txregs->control, 0); - SPINWAIT(((status = (R_REG(di->osh, - &di->d32txregs->status) & XS_XS_MASK)) != - XS_XS_DISABLED), 10000); - - /* wait for the last transaction to complete */ - udelay(300); - - return status == XS_XS_DISABLED; -} - -static bool dma32_rxidle(dma_info_t *di) -{ - DMA_TRACE(("%s: dma_rxidle\n", di->name)); - - if (di->nrxd == 0) - return true; - - return ((R_REG(di->osh, &di->d32rxregs->status) & RS_CD_MASK) == - R_REG(di->osh, &di->d32rxregs->ptr)); -} - -static bool dma32_rxreset(dma_info_t *di) -{ - u32 status; - - if (di->nrxd == 0) - return true; - - W_REG(di->osh, &di->d32rxregs->control, 0); - SPINWAIT(((status = (R_REG(di->osh, - &di->d32rxregs->status) & RS_RS_MASK)) != - RS_RS_DISABLED), 10000); - - return status == RS_RS_DISABLED; -} - -static bool dma32_rxenabled(dma_info_t *di) -{ - u32 rc; - - rc = R_REG(di->osh, &di->d32rxregs->control); - return (rc != 0xffffffff) && (rc & RC_RE); -} - -static bool dma32_txsuspendedidle(dma_info_t *di) -{ - if (di->ntxd == 0) - return true; - - if (!(R_REG(di->osh, &di->d32txregs->control) & XC_SE)) - return 0; - - if ((R_REG(di->osh, &di->d32txregs->status) & XS_XS_MASK) != XS_XS_IDLE) - return 0; - - udelay(2); - return ((R_REG(di->osh, &di->d32txregs->status) & XS_XS_MASK) == - XS_XS_IDLE); -} - -/* !! tx entry routine - * supports full 32bit dma engine buffer addressing so - * dma buffers can cross 4 Kbyte page boundaries. - * - * WARNING: call must check the return value for error. - * the error(toss frames) could be fatal and cause many subsequent hard to debug problems - */ -static int dma32_txfast(dma_info_t *di, struct sk_buff *p0, bool commit) -{ - struct sk_buff *p, *next; - unsigned char *data; - uint len; - u16 txout; - u32 flags = 0; - dmaaddr_t pa; - - DMA_TRACE(("%s: dma_txfast\n", di->name)); - - txout = di->txout; - - /* - * Walk the chain of packet buffers - * allocating and initializing transmit descriptor entries. - */ - for (p = p0; p; p = next) { - uint nsegs, j; - hnddma_seg_map_t *map; - - data = p->data; - len = p->len; -#ifdef BCM_DMAPAD - len += PKTDMAPAD(di->osh, p); -#endif - next = p->next; - - /* return nonzero if out of tx descriptors */ - if (NEXTTXD(txout) == di->txin) - goto outoftxd; - - if (len == 0) - continue; - - if (DMASGLIST_ENAB) - memset(&di->txp_dmah[txout], 0, - sizeof(hnddma_seg_map_t)); - - /* get physical address of buffer start */ - pa = DMA_MAP(di->osh, data, len, DMA_TX, p, - &di->txp_dmah[txout]); - - if (DMASGLIST_ENAB) { - map = &di->txp_dmah[txout]; - - /* See if all the segments can be accounted for */ - if (map->nsegs > - (uint) (di->ntxd - NTXDACTIVE(di->txin, di->txout) - - 1)) - goto outoftxd; - - nsegs = map->nsegs; - } else - nsegs = 1; - - for (j = 1; j <= nsegs; j++) { - flags = 0; - if (p == p0 && j == 1) - flags |= CTRL_SOF; - - /* With a DMA segment list, Descriptor table is filled - * using the segment list instead of looping over - * buffers in multi-chain DMA. Therefore, EOF for SGLIST is when - * end of segment list is reached. - */ - if ((!DMASGLIST_ENAB && next == NULL) || - (DMASGLIST_ENAB && j == nsegs)) - flags |= (CTRL_IOC | CTRL_EOF); - if (txout == (di->ntxd - 1)) - flags |= CTRL_EOT; - - if (DMASGLIST_ENAB) { - len = map->segs[j - 1].length; - pa = map->segs[j - 1].addr; - } - ASSERT(PHYSADDRHI(pa) == 0); - - dma32_dd_upd(di, di->txd32, pa, txout, &flags, len); - ASSERT(di->txp[txout] == NULL); - - txout = NEXTTXD(txout); - } - - /* See above. No need to loop over individual buffers */ - if (DMASGLIST_ENAB) - break; - } - - /* if last txd eof not set, fix it */ - if (!(flags & CTRL_EOF)) - W_SM(&di->txd32[PREVTXD(txout)].ctrl, - BUS_SWAP32(flags | CTRL_IOC | CTRL_EOF)); - - /* save the packet */ - di->txp[PREVTXD(txout)] = p0; - - /* bump the tx descriptor index */ - di->txout = txout; - - /* kick the chip */ - if (commit) - W_REG(di->osh, &di->d32txregs->ptr, I2B(txout, dma32dd_t)); - - /* tx flow control */ - di->hnddma.txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1; - - return 0; - - outoftxd: - DMA_ERROR(("%s: dma_txfast: out of txds\n", di->name)); - pkt_buf_free_skb(di->osh, p0, true); - di->hnddma.txavail = 0; - di->hnddma.txnobuf++; - return -1; -} - -/* - * Reclaim next completed txd (txds if using chained buffers) in the range - * specified and return associated packet. - * If range is HNDDMA_RANGE_TRANSMITTED, reclaim descriptors that have be - * transmitted as noted by the hardware "CurrDescr" pointer. - * If range is HNDDMA_RANGE_TRANSFERED, reclaim descriptors that have be - * transfered by the DMA as noted by the hardware "ActiveDescr" pointer. - * If range is HNDDMA_RANGE_ALL, reclaim all txd(s) posted to the ring and - * return associated packet regardless of the value of hardware pointers. - */ -static void *dma32_getnexttxp(dma_info_t *di, txd_range_t range) -{ - u16 start, end, i; - u16 active_desc; - void *txp; - - DMA_TRACE(("%s: dma_getnexttxp %s\n", di->name, - (range == HNDDMA_RANGE_ALL) ? "all" : - ((range == - HNDDMA_RANGE_TRANSMITTED) ? "transmitted" : - "transfered"))); - - if (di->ntxd == 0) - return NULL; - - txp = NULL; - - start = di->txin; - if (range == HNDDMA_RANGE_ALL) - end = di->txout; - else { - dma32regs_t *dregs = di->d32txregs; - - end = - (u16) B2I(R_REG(di->osh, &dregs->status) & XS_CD_MASK, - dma32dd_t); - - if (range == HNDDMA_RANGE_TRANSFERED) { - active_desc = - (u16) ((R_REG(di->osh, &dregs->status) & - XS_AD_MASK) >> XS_AD_SHIFT); - active_desc = (u16) B2I(active_desc, dma32dd_t); - if (end != active_desc) - end = PREVTXD(active_desc); - } - } - - if ((start == 0) && (end > di->txout)) - goto bogus; - - for (i = start; i != end && !txp; i = NEXTTXD(i)) { - dmaaddr_t pa; - hnddma_seg_map_t *map = NULL; - uint size, j, nsegs; - - PHYSADDRLOSET(pa, - (BUS_SWAP32(R_SM(&di->txd32[i].addr)) - - di->dataoffsetlow)); - PHYSADDRHISET(pa, 0); - - if (DMASGLIST_ENAB) { - map = &di->txp_dmah[i]; - size = map->origsize; - nsegs = map->nsegs; - } else { - size = - (BUS_SWAP32(R_SM(&di->txd32[i].ctrl)) & - CTRL_BC_MASK); - nsegs = 1; - } - - for (j = nsegs; j > 0; j--) { - W_SM(&di->txd32[i].addr, 0xdeadbeef); - - txp = di->txp[i]; - di->txp[i] = NULL; - if (j > 1) - i = NEXTTXD(i); - } - - DMA_UNMAP(di->osh, pa, size, DMA_TX, txp, map); - } - - di->txin = i; - - /* tx flow control */ - di->hnddma.txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1; - - return txp; - - bogus: - DMA_NONE(("dma_getnexttxp: bogus curr: start %d end %d txout %d force %d\n", start, end, di->txout, forceall)); - return NULL; -} - -static void *dma32_getnextrxp(dma_info_t *di, bool forceall) -{ - uint i, curr; - void *rxp; - dmaaddr_t pa; - /* if forcing, dma engine must be disabled */ - ASSERT(!forceall || !dma32_rxenabled(di)); - - i = di->rxin; - - /* return if no packets posted */ - if (i == di->rxout) - return NULL; - - curr = - B2I(R_REG(di->osh, &di->d32rxregs->status) & RS_CD_MASK, dma32dd_t); - - /* ignore curr if forceall */ - if (!forceall && (i == curr)) - return NULL; - - /* get the packet pointer that corresponds to the rx descriptor */ - rxp = di->rxp[i]; - ASSERT(rxp); - di->rxp[i] = NULL; - - PHYSADDRLOSET(pa, - (BUS_SWAP32(R_SM(&di->rxd32[i].addr)) - - di->dataoffsetlow)); - PHYSADDRHISET(pa, 0); - - /* clear this packet from the descriptor ring */ - DMA_UNMAP(di->osh, pa, di->rxbufsize, DMA_RX, rxp, &di->rxp_dmah[i]); - - W_SM(&di->rxd32[i].addr, 0xdeadbeef); - - di->rxin = NEXTRXD(i); - - return rxp; -} - -/* - * Rotate all active tx dma ring entries "forward" by (ActiveDescriptor - txin). - */ -static void dma32_txrotate(dma_info_t *di) -{ - u16 ad; - uint nactive; - uint rot; - u16 old, new; - u32 w; - u16 first, last; - - ASSERT(dma32_txsuspendedidle(di)); - - nactive = _dma_txactive(di); - ad = (u16) (B2I - (((R_REG(di->osh, &di->d32txregs->status) & XS_AD_MASK) - >> XS_AD_SHIFT), dma32dd_t)); - rot = TXD(ad - di->txin); - - ASSERT(rot < di->ntxd); - - /* full-ring case is a lot harder - don't worry about this */ - if (rot >= (di->ntxd - nactive)) { - DMA_ERROR(("%s: dma_txrotate: ring full - punt\n", di->name)); - return; - } - - first = di->txin; - last = PREVTXD(di->txout); - - /* move entries starting at last and moving backwards to first */ - for (old = last; old != PREVTXD(first); old = PREVTXD(old)) { - new = TXD(old + rot); - - /* - * Move the tx dma descriptor. - * EOT is set only in the last entry in the ring. - */ - w = BUS_SWAP32(R_SM(&di->txd32[old].ctrl)) & ~CTRL_EOT; - if (new == (di->ntxd - 1)) - w |= CTRL_EOT; - W_SM(&di->txd32[new].ctrl, BUS_SWAP32(w)); - W_SM(&di->txd32[new].addr, R_SM(&di->txd32[old].addr)); - - /* zap the old tx dma descriptor address field */ - W_SM(&di->txd32[old].addr, BUS_SWAP32(0xdeadbeef)); - - /* move the corresponding txp[] entry */ - ASSERT(di->txp[new] == NULL); - di->txp[new] = di->txp[old]; - - /* Move the segment map as well */ - if (DMASGLIST_ENAB) { - bcopy(&di->txp_dmah[old], &di->txp_dmah[new], - sizeof(hnddma_seg_map_t)); - memset(&di->txp_dmah[old], 0, sizeof(hnddma_seg_map_t)); - } - - di->txp[old] = NULL; - } - - /* update txin and txout */ - di->txin = ad; - di->txout = TXD(di->txout + rot); - di->hnddma.txavail = di->ntxd - NTXDACTIVE(di->txin, di->txout) - 1; - - /* kick the chip */ - W_REG(di->osh, &di->d32txregs->ptr, I2B(di->txout, dma32dd_t)); -} - /* 64-bit DMA functions */ static void dma64_txinit(dma_info_t *di) @@ -2455,7 +1789,6 @@ static void dma64_txrotate(dma_info_t *di) uint dma_addrwidth(si_t *sih, void *dmaregs) { - dma32regs_t *dma32regs; struct osl_info *osh; osh = si_osh(sih); @@ -2470,24 +1803,8 @@ uint dma_addrwidth(si_t *sih, void *dmaregs) ((sih->bustype == PCI_BUS) && (sih->buscoretype == PCIE_CORE_ID))) return DMADDRWIDTH_64; - - /* DMA64 is always 32-bit capable, AE is always true */ - ASSERT(_dma64_addrext(osh, (dma64regs_t *) dmaregs)); - - return DMADDRWIDTH_32; } - - /* Start checking for 32-bit / 30-bit addressing */ - dma32regs = (dma32regs_t *) dmaregs; - - /* For System Backplane, PCIE bus or addrext feature, 32-bits ok */ - if ((sih->bustype == SI_BUS) || - ((sih->bustype == PCI_BUS) - && sih->buscoretype == PCIE_CORE_ID) - || (_dma32_addrext(osh, dma32regs))) - return DMADDRWIDTH_32; - - /* Fallthru */ - return DMADDRWIDTH_30; + ASSERT(0); /* DMA hardware not supported by this driver*/ + return DMADDRWIDTH_64; }