456 lines
12 KiB
C
456 lines
12 KiB
C
/* $NetBSD: if_le.c,v 1.13 1996/05/07 01:23:31 thorpej Exp $ */
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/*-
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* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell and Rick Macklem.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_le.c 8.2 (Berkeley) 11/16/93
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*/
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <net/if.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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#include <machine/autoconf.h>
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#include <dev/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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#include <dev/tc/tcvar.h>
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#include <dev/tc/ioasicvar.h>
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#include <dev/tc/if_levar.h>
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#ifdef pmax
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#define wbflush() MachEmptyWriteBuffer()
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/* This should be in a header file, but where? */
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extern struct cfdriver mainbus_cd; /* XXX really 3100/5100 b'board */
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#include <pmax/pmax/kn01.h>
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#include <machine/machConst.h>
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#include <pmax/pmax/asic.h>
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#else /* Alpha */
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#include <machine/rpb.h>
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#endif /* Alpha */
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/* access LANCE registers */
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void lewritereg();
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#define LERDWR(cntl, src, dst) { (dst) = (src); wbflush(); }
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#define LEWREG(src, dst) lewritereg(&(dst), (src))
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#define LE_OFFSET_RAM 0x0
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#define LE_OFFSET_LANCE 0x100000
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#define LE_OFFSET_ROM 0x1c0000
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extern caddr_t le_iomem;
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int le_pmax_match __P((struct device *, void *, void *));
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void le_pmax_attach __P((struct device *, struct device *, void *));
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hide void le_pmax_copytobuf_gap2 __P((struct am7990_softc *, void *,
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int, int));
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hide void le_pmax_copyfrombuf_gap2 __P((struct am7990_softc *, void *,
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int, int));
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hide void le_pmax_copytobuf_gap16 __P((struct am7990_softc *, void *,
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int, int));
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hide void le_pmax_copyfrombuf_gap16 __P((struct am7990_softc *, void *,
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int, int));
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hide void le_pmax_zerobuf_gap16 __P((struct am7990_softc *, int, int));
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struct cfattach le_pmax_ca = {
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sizeof(struct le_softc), le_pmax_match, le_pmax_attach
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};
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hide void le_pmax_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t));
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hide u_int16_t le_pmax_rdcsr __P((struct am7990_softc *, u_int16_t));
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hide void
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le_pmax_wrcsr(sc, port, val)
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struct am7990_softc *sc;
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u_int16_t port, val;
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{
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struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
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LEWREG(port, ler1->ler1_rap);
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LERDWR(port, val, ler1->ler1_rdp);
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}
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hide u_int16_t
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le_pmax_rdcsr(sc, port)
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struct am7990_softc *sc;
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u_int16_t port;
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{
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struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
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u_int16_t val;
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LEWREG(port, ler1->ler1_rap);
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LERDWR(0, ler1->ler1_rdp, val);
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return (val);
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}
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int
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le_pmax_match(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct cfdata *cf = match;
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struct confargs *ca = aux;
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#ifdef notdef /* XXX */
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struct tc_cfloc *tc_locp;
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struct asic_cfloc *asic_locp;
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#endif
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#ifdef notdef /* XXX */
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tclocp = (struct tc_cfloc *)cf->cf_loc;
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#endif
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/* XXX CHECK BUS */
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/* make sure that we're looking for this type of device. */
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if (!TC_BUS_MATCHNAME(ca, "PMAD-BA ") && /* untested alpha TC option */
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!TC_BUS_MATCHNAME(ca, "PMAD-AA ") && /* KN02 b'board, old option */
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!TC_BUS_MATCHNAME(ca, "lance")) /* NetBSD name for b'board */
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return (0);
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#ifdef notdef /* XXX */
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/* make sure the unit matches the cfdata */
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if ((cf->cf_unit != tap->ta_unit &&
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tap->ta_unit != TA_ANYUNIT) ||
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(tclocp->cf_slot != tap->ta_slot &&
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tclocp->cf_slot != TC_SLOT_WILD) ||
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(tclocp->cf_offset != tap->ta_offset &&
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tclocp->cf_offset != TC_OFFSET_WILD))
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return (0);
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#endif
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return (1);
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}
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void
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le_pmax_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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register struct le_softc *lesc = (void *)self;
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register struct am7990_softc *sc = &lesc->sc_am7990;
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struct confargs *ca = aux;
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u_char *cp; /* pointer to MAC address */
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int i;
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if (parent->dv_cfdata->cf_driver == &ioasic_cd) {
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/* It's on the system IOCTL ASIC */
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volatile u_int *ldp;
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tc_addr_t dma_mask;
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lesc->sc_r1 = (struct lereg1 *)
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MACH_PHYS_TO_UNCACHED(ca->ca_addr);
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#ifdef alpha
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lesc->sc_r1 = TC_DENSE_TO_SPARSE(sc->sc_r1);
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#endif
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sc->sc_mem = (void *)MACH_PHYS_TO_UNCACHED(le_iomem);
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/* XXX */ cp = (u_char *)IOASIC_SYS_ETHER_ADDRESS(ioasic_base);
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sc->sc_copytodesc = le_pmax_copytobuf_gap2;
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sc->sc_copyfromdesc = le_pmax_copyfrombuf_gap2;
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sc->sc_copytobuf = le_pmax_copytobuf_gap16;
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sc->sc_copyfrombuf = le_pmax_copyfrombuf_gap16;
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sc->sc_zerobuf = le_pmax_zerobuf_gap16;
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/*
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* And enable Lance dma through the asic.
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*/
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ldp = (volatile u_int *) (IOASIC_REG_LANCE_DMAPTR(ioasic_base));
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dma_mask = ((tc_addr_t)le_iomem << 3);
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#ifdef alpha
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/* Set upper 64 bits of DMA mask */
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dma_mask = (dma_mask & ~(tc_addr_t)0x1f) |
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(((tc_addr_t)le_iomem >> 29) & 0x1f);
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#endif /*alpha*/
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*ldp = dma_mask;
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*(volatile u_int *)IOASIC_REG_CSR(ioasic_base) |=
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IOASIC_CSR_DMAEN_LANCE;
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wbflush();
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}
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else
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if (parent->dv_cfdata->cf_driver == &tc_cd) {
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/* It's on the turbochannel proper, or on KN02 baseboard. */
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lesc->sc_r1 = (struct lereg1 *)
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(ca->ca_addr + LE_OFFSET_LANCE);
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sc->sc_mem = (void *)
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(ca->ca_addr + LE_OFFSET_RAM);
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cp = (u_char *)(ca->ca_addr + LE_OFFSET_ROM + 2);
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sc->sc_copytodesc = am7990_copytobuf_contig;
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sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
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sc->sc_copytobuf = am7990_copytobuf_contig;
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sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
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sc->sc_zerobuf = am7990_zerobuf_contig;
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}
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#ifdef pmax
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else if (parent->dv_cfdata->cf_driver == &mainbus_cd) {
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/* It's on the baseboard, attached directly to mainbus. */
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lesc->sc_r1 = (struct lereg1 *)(ca->ca_addr);
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/*XXX*/ sc->sc_mem = (void *)MACH_PHYS_TO_UNCACHED(0x19000000);
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/*XXX*/ cp = (u_char *)(MACH_PHYS_TO_UNCACHED(KN01_SYS_CLOCK) + 1);
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sc->sc_copytodesc = le_pmax_copytobuf_gap2;
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sc->sc_copyfromdesc = le_pmax_copyfrombuf_gap2;
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sc->sc_copytobuf = le_pmax_copytobuf_gap2;
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sc->sc_copyfrombuf = le_pmax_copyfrombuf_gap2;
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sc->sc_zerobuf = le_pmax_zerobuf_gap2;
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}
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#endif
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sc->sc_rdcsr = le_pmax_rdcsr;
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sc->sc_wrcsr = le_pmax_wrcsr;
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sc->sc_hwinit = NULL;
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sc->sc_conf3 = 0;
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sc->sc_addr = 0;
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sc->sc_memsize = 65536;
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/*
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* Get the ethernet address out of rom
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*/
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for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++) {
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sc->sc_arpcom.ac_enaddr[i] = *cp;
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cp += 4;
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}
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am7990_config(sc);
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BUS_INTR_ESTABLISH(ca, am7990_intr, sc);
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if (parent->dv_cfdata->cf_driver == &ioasic_cd) {
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/* XXX YEECH!!! */
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*(volatile u_int *)IOASIC_REG_IMSK(ioasic_base) |=
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IOASIC_INTR_LANCE;
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wbflush();
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}
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}
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/*
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* Write a lance register port, reading it back to ensure success. This seems
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* to be necessary during initialization, since the chip appears to be a bit
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* pokey sometimes.
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*/
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void
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lewritereg(regptr, val)
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register volatile u_short *regptr;
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register u_short val;
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{
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register int i = 0;
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while (*regptr != val) {
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*regptr = val;
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wbflush();
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if (++i > 10000) {
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printf("le: Reg did not settle (to x%x): x%x\n", val,
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*regptr);
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return;
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}
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DELAY(100);
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}
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}
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/*
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* Routines for accessing the transmit and receive buffers are provided
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* by am7990.c, because of the LE_NEED_BUF_* macros defined above.
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* Unfortunately, CPU addressing of these buffers is done in one of
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* 3 ways:
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* - contiguous (for the 3max and turbochannel option card)
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* - gap2, which means shorts (2 bytes) interspersed with short (2 byte)
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* spaces (for the pmax)
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* - gap16, which means 16bytes interspersed with 16byte spaces
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* for buffers which must begin on a 32byte boundary (for 3min and maxine)
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* The buffer offset is the logical byte offset, assuming contiguous storage.
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*/
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/*
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* gap2: two bytes of data followed by two bytes of pad.
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*
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* Buffers must be 4-byte aligned. The code doesn't worry about
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* doing an extra byte.
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*/
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void
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le_pmax_copytobuf_gap2(sc, fromv, boff, len)
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struct am7990_softc *sc;
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void *fromv;
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int boff;
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register int len;
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{
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volatile caddr_t buf = sc->sc_mem;
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register caddr_t from = fromv;
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register volatile u_int16_t *bptr;
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if (boff & 0x1) {
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/* handle unaligned first byte */
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bptr = ((volatile u_int16_t *)buf) + (boff - 1);
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*bptr = (*from++ << 8) | (*bptr & 0xff);
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bptr += 2;
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len--;
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} else
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bptr = ((volatile u_int16_t *)buf) + boff;
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while (len > 1) {
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*bptr = (from[1] << 8) | (from[0] & 0xff);
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bptr += 2;
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from += 2;
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len -= 2;
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}
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if (len == 1)
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*bptr = (u_int16_t)*from;
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}
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void
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le_pmax_copyfrombuf_gap2(sc, tov, boff, len)
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struct am7990_softc *sc;
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void *tov;
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int boff, len;
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{
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volatile caddr_t buf = sc->sc_mem;
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register caddr_t to = tov;
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register volatile u_int16_t *bptr;
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register u_int16_t tmp;
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if (boff & 0x1) {
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/* handle unaligned first byte */
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bptr = ((volatile u_int16_t *)buf) + (boff - 1);
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*to++ = (*bptr >> 8) & 0xff;
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bptr += 2;
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len--;
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} else
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bptr = ((volatile u_int16_t *)buf) + boff;
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while (len > 1) {
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tmp = *bptr;
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*to++ = tmp & 0xff;
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*to++ = (tmp >> 8) & 0xff;
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bptr += 2;
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len -= 2;
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}
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if (len == 1)
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*to = *bptr & 0xff;
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}
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/*
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* gap16: 16 bytes of data followed by 16 bytes of pad.
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*
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* Buffers must be 32-byte aligned.
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*/
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void
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le_pmax_copytobuf_gap16(sc, fromv, boff, len)
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struct am7990_softc *sc;
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void *fromv;
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int boff;
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register int len;
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{
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volatile caddr_t buf = sc->sc_mem;
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register caddr_t from = fromv;
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register caddr_t bptr;
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register int xfer;
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bptr = buf + ((boff << 1) & ~0x1f);
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boff &= 0xf;
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xfer = min(len, 16 - boff);
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while (len > 0) {
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bcopy(from, bptr + boff, xfer);
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from += xfer;
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bptr += 32;
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boff = 0;
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len -= xfer;
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xfer = min(len, 16);
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}
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}
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void
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le_pmax_copyfrombuf_gap16(sc, tov, boff, len)
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struct am7990_softc *sc;
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void *tov;
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int boff, len;
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{
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volatile caddr_t buf = sc->sc_mem;
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register caddr_t to = tov;
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register caddr_t bptr;
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register int xfer;
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bptr = buf + ((boff << 1) & ~0x1f);
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boff &= 0xf;
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xfer = min(len, 16 - boff);
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while (len > 0) {
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bcopy(bptr + boff, to, xfer);
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to += xfer;
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bptr += 32;
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boff = 0;
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len -= xfer;
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xfer = min(len, 16);
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}
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}
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void
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le_pmax_zerobuf_gap16(sc, boff, len)
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struct am7990_softc *sc;
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int boff, len;
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{
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volatile caddr_t buf = sc->sc_mem;
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register caddr_t bptr;
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register int xfer;
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bptr = buf + ((boff << 1) & ~0x1f);
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boff &= 0xf;
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xfer = min(len, 16 - boff);
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while (len > 0) {
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bzero(bptr + boff, xfer);
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bptr += 32;
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boff = 0;
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len -= xfer;
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xfer = min(len, 16);
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}
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}
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