Pull down from marc-pcmcia branch: Common code used by NE2000 and compatible
ethernet cards.
This commit is contained in:
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f58d4fbf3c
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/* $NetBSD: ne2000.c,v 1.2 1997/10/14 22:54:09 thorpej Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Device driver for National Semiconductor DS8390/WD83C690 based ethernet
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* adapters.
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*
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* Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
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*
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* Copyright (C) 1993, David Greenman. This software may be used, modified,
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* copied, distributed, and sold, in both source and binary form provided that
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* the above copyright and these terms are retained. Under no circumstances is
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* the author responsible for the proper functioning of this software, nor does
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* the author assume any responsibility for damages incurred with its use.
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*/
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/*
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* Common code shared by all NE2000-compatible Ethernet interfaces.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/socket.h>
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#include <sys/mbuf.h>
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#include <sys/syslog.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/if_ether.h>
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#include <machine/bus.h>
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#include <dev/ic/dp8390reg.h>
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#include <dev/ic/dp8390var.h>
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#include <dev/ic/ne2000reg.h>
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#include <dev/ic/ne2000var.h>
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struct cfdriver ne_cd = {
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NULL, "ne", DV_IFNET
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};
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int ne2000_write_mbuf __P((struct dp8390_softc *, struct mbuf *, int));
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int ne2000_ring_copy __P((struct dp8390_softc *, int, caddr_t, u_short));
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void ne2000_read_hdr __P((struct dp8390_softc *, int, struct dp8390_ring *));
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int ne2000_test_mem __P((struct dp8390_softc *));
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void ne2000_writemem __P((bus_space_tag_t, bus_space_handle_t,
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bus_space_tag_t, bus_space_handle_t, u_int8_t *, int, size_t, int));
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void ne2000_readmem __P((bus_space_tag_t, bus_space_handle_t,
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bus_space_tag_t, bus_space_handle_t, int, u_int8_t *, size_t, int));
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void
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ne2000_attach(nsc, myea)
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struct ne2000_softc *nsc;
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u_int8_t *myea;
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{
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struct dp8390_softc *dsc = &nsc->sc_dp8390;
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bus_space_tag_t nict = dsc->sc_regt;
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bus_space_handle_t nich = dsc->sc_regh;
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bus_space_tag_t asict = nsc->sc_asict;
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bus_space_handle_t asich = nsc->sc_asich;
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u_int8_t romdata[16];
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int memsize, i, useword;
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/*
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* Detect it again; this gives us the memory size.
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*/
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nsc->sc_type = ne2000_detect(nict, nich, asict, asich);
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if (nsc->sc_type == 0) {
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printf("%s: where did the card go?\n", dsc->sc_dev.dv_xname);
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return;
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}
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useword = (nsc->sc_type == NE2000_TYPE_NE2000);
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dsc->cr_proto = ED_CR_RD2;
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/*
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* DCR gets:
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*
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* FIFO threshold to 8, No auto-init Remote DMA,
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* byte order=80x86.
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*
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* NE1000 gets byte-wide DMA, NE2000 gets word-wide DMA.
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*/
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dsc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS |
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(nsc->sc_type == NE2000_TYPE_NE2000 ? ED_DCR_WTS : 0);
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dsc->test_mem = ne2000_test_mem;
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dsc->ring_copy = ne2000_ring_copy;
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dsc->write_mbuf = ne2000_write_mbuf;
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dsc->read_hdr = ne2000_read_hdr;
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/* Registers are linear. */
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for (i = 0; i < 16; i++)
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dsc->sc_reg_map[i] = i;
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/*
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* 8k of memory plus an additional 8k if an NE2000.
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*/
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memsize = 8192 + (nsc->sc_type == NE2000_TYPE_NE2000 ? 8192 : 0);
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/*
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* NIC memory doens't start at zero on an NE board.
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* The start address is tied to the bus width.
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* (It happens to be computed the same way as mem size.)
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*/
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dsc->mem_start = memsize;
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#ifdef GWETHER
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{
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int x, mstart = 0;
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int8_t pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE],
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tbuf[ED_PAGE_SIZE];
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for (i = 0; i < ED_PAGE_SIZE; i++)
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pbuf0[i] = 0;
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/* Search for the start of RAM. */
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for (x = 1; x < 256; x++) {
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ne2000_writemem(nict, nich, asict, asich, pbuf0,
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x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword);
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ne2000_readmem(nict, nich, asict, asich,
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x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword);
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if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) {
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for (i = 0; i < ED_PAGE_SIZE; i++)
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pbuf[i] = 255 - x;
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ne2000_writemem(nict, nich, asict, asich,
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pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE,
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useword);
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ne2000_readmem(nict, nich, asict, asich,
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x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE,
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useword);
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if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) {
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mstart = x << ED_PAGE_SHIFT;
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memsize = ED_PAGE_SIZE;
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break;
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}
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}
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}
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if (mstart == 0) {
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printf("%s: cannot find start of RAM\n",
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dsc->sc_dev.dv_xname);
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return;
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}
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/* Search for the end of RAM. */
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for (++x; x < 256; x++) {
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ne2000_writemem(nict, nich, asict, asich, pbuf0,
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x << ED_PAGE_SHIFT, ED_PAGE_SIZE, useword);
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ne2000_readmem(nict, nich, asict, asich,
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x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE, useword);
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if (bcmp(pbuf0, tbuf, ED_PAGE_SIZE) == 0) {
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for (i = 0; i < ED_PAGE_SIZE; i++)
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pbuf[i] = 255 - x;
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ne2000_writemem(nict, nich, asict, asich,
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pbuf, x << ED_PAGE_SHIFT, ED_PAGE_SIZE,
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useword);
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ne2000_readmem(nict, nich, asict, asich,
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x << ED_PAGE_SHIFT, tbuf, ED_PAGE_SIZE
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useword);
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if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0)
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memsize += ED_PAGE_SIZE;
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else
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break;
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} else
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break;
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}
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printf("%s: RAM start 0x%x, size %d\n",
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dsc->sc_dev.dv_xname, mstart, msize);
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dsc->mem_start = mstart;
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}
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#endif /* GWETHER */
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dsc->mem_size = memsize;
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if (myea == NULL) {
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/* Read the station address. */
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ne2000_readmem(nict, nich, asict, asich, 0, romdata,
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sizeof(romdata), useword);
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for (i = 0; i < ETHER_ADDR_LEN; i++)
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dsc->sc_enaddr[i] = romdata[i * (useword ? 2 : 1)];
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} else
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bcopy(myea, dsc->sc_enaddr, sizeof(dsc->sc_enaddr));
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/* Clear any pending interrupts that might have occurred above. */
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bus_space_write_1(nict, nich, ED_P0_ISR, 0xff);
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if (dp8390_config(dsc)) {
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printf("%s: setup failed\n", dsc->sc_dev.dv_xname);
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return;
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}
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/*
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* We need to compute mem_ring a bit differently; override the
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* value set up in dp8390_config().
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*/
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dsc->mem_ring =
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dsc->mem_start + ((dsc->txb_cnt * ED_TXBUF_SIZE) << ED_PAGE_SHIFT);
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}
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/*
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* Detect an NE-2000 or compatible. Returns a model code.
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*/
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int
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ne2000_detect(nict, nich, asict, asich)
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bus_space_tag_t nict;
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bus_space_handle_t nich;
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bus_space_tag_t asict;
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bus_space_handle_t asich;
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{
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static u_int8_t test_pattern[32] = "THIS is A memory TEST pattern";
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u_int8_t test_buffer[32], tmp;
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int i, rv = 0;
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/* Reset the board. */
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#ifdef GWETHER
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bus_space_write_1(asict, asich, NE2000_ASIC_RESET, 0);
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delay(200);
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#endif /* GWETHER */
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tmp = bus_space_read_1(asict, asich, NE2000_ASIC_RESET);
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delay(10000);
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/*
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* I don't know if this is necessary; probably cruft leftover from
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* Clarkson packet driver code. Doesn't do a thing on the boards I've
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* tested. -DG [note that a outb(0x84, 0) seems to work here, and is
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* non-invasive...but some boards don't seem to reset and I don't have
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* complete documentation on what the 'right' thing to do is...so we do
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* the invasive thing for now. Yuck.]
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*/
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bus_space_write_1(asict, asich, NE2000_ASIC_RESET, tmp);
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delay(5000);
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/*
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* This is needed because some NE clones apparently don't reset the
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* NIC properly (or the NIC chip doesn't reset fully on power-up).
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* XXX - this makes the probe invasive! Done against my better
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* judgement. -DLG
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*/
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bus_space_write_1(nict, nich, ED_P0_CR,
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ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STP);
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delay(5000);
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tmp = bus_space_read_1(nict, nich, ED_P0_CR);
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if ((tmp & (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) !=
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(ED_CR_RD2 | ED_CR_STP))
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goto out;
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bus_space_write_1(nict, nich,
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ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
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for (i = 0; i < 100; i++) {
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if ((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RST) ==
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ED_ISR_RST) {
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/* Ack the reset bit. */
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bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RST);
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break;
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}
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delay(100);
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}
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#if 0
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/* XXX */
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if (i == 100)
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goto out;
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#endif
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/*
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* Test the ability to read and write to the NIC memory. This has
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* the side effect of determining if this is an NE1000 or an NE2000.
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*/
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/*
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* This prevents packets from being stored in the NIC memory when
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* the readmem routine turns on the start bit in the CR.
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*/
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bus_space_write_1(nict, nich, ED_P0_RCR, ED_RCR_MON);
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/* Temporarily initialize DCR for byte operations. */
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bus_space_write_1(nict, nich, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS);
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bus_space_write_1(nict, nich, ED_P0_PSTART, 8192 >> ED_PAGE_SHIFT);
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bus_space_write_1(nict, nich, ED_P0_PSTOP, 16384 >> ED_PAGE_SHIFT);
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/*
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* Write a test pattern in byte mode. If this fails, then there
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* probably isn't any memory at 8k - which likely means that the
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* board is an NE2000.
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*/
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ne2000_writemem(nict, nich, asict, asich, test_pattern, 8192,
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sizeof(test_pattern), 0);
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ne2000_readmem(nict, nich, asict, asich, 8192, test_buffer,
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sizeof(test_buffer), 0);
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if (bcmp(test_pattern, test_buffer, sizeof(test_pattern))) {
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/* not an NE1000 - try NE2000 */
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bus_space_write_1(nict, nich, ED_P0_DCR,
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ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS);
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bus_space_write_1(nict, nich, ED_P0_PSTART,
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16384 >> ED_PAGE_SHIFT);
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bus_space_write_1(nict, nich, ED_P0_PSTOP,
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32768 >> ED_PAGE_SHIFT);
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/*
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* Write the test pattern in word mode. If this also fails,
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* then we don't know what this board is.
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*/
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ne2000_writemem(nict, nich, asict, asich, test_pattern, 16384,
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sizeof(test_pattern), 1);
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ne2000_readmem(nict, nich, asict, asich, 16384, test_buffer,
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sizeof(test_buffer), 1);
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if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)))
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goto out; /* not an NE2000 either */
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rv = NE2000_TYPE_NE2000;
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} else {
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/* We're an NE1000. */
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rv = NE2000_TYPE_NE1000;
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}
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/* Clear any pending interrupts that might have occurred above. */
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bus_space_write_1(nict, nich, ED_P0_ISR, 0xff);
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out:
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return (rv);
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}
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/*
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* Write an mbuf chain to the destination NIC memory address using programmed
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* I/O.
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*/
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int
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ne2000_write_mbuf(sc, m, buf)
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struct dp8390_softc *sc;
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struct mbuf *m;
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int buf;
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{
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struct ne2000_softc *nsc = (struct ne2000_softc *)sc;
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bus_space_tag_t nict = sc->sc_regt;
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bus_space_handle_t nich = sc->sc_regh;
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bus_space_tag_t asict = nsc->sc_asict;
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bus_space_handle_t asich = nsc->sc_asich;
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int savelen;
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int maxwait = 100; /* about 120us */
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savelen = m->m_pkthdr.len;
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/* Select page 0 registers. */
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NIC_PUT(nict, nich, ED_P0_CR, ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
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/* Reset remote DMA complete flag. */
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NIC_PUT(nict, nich, ED_P0_ISR, ED_ISR_RDC);
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/* Set up DMA byte count. */
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NIC_PUT(nict, nich, ED_P0_RBCR0, savelen);
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NIC_PUT(nict, nich, ED_P0_RBCR1, savelen >> 8);
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/* Set up destination address in NIC mem. */
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NIC_PUT(nict, nich, ED_P0_RSAR0, buf);
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NIC_PUT(nict, nich, ED_P0_RSAR1, buf >> 8);
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/* Set remote DMA write. */
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NIC_PUT(nict, nich, ED_P0_CR, ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA);
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/*
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* Transfer the mbuf chain to the NIC memory. NE2000 cards
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* require that data be transferred as words, and only words,
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* so that case requires some extra code to patch over odd-length
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* mbufs.
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*/
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if (nsc->sc_type == NE2000_TYPE_NE1000) {
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/* NE1000s are easy. */
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for (; m != 0; m = m->m_next) {
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if (m->m_len) {
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bus_space_write_multi_1(asict, asich,
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NE2000_ASIC_DATA, mtod(m, u_int8_t *),
|
||||
m->m_len);
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||||
}
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}
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} else {
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/* NE2000s are a bit trickier. */
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u_int8_t *data, savebyte[2];
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int l, wantbyte;
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|
||||
wantbyte = 0;
|
||||
for (; m != 0; m = m->m_next) {
|
||||
l = m->m_len;
|
||||
if (l == 0)
|
||||
continue;
|
||||
data = mtod(m, u_int8_t *);
|
||||
/* Finish the last word. */
|
||||
if (wantbyte) {
|
||||
savebyte[1] = *data;
|
||||
bus_space_write_2(asict, asich,
|
||||
NE2000_ASIC_DATA, *(u_int16_t *)savebyte);
|
||||
data++;
|
||||
l--;
|
||||
wantbyte = 0;
|
||||
}
|
||||
/* Output contiguous words. */
|
||||
if (l > 1) {
|
||||
bus_space_write_multi_2(asict, asich,
|
||||
NE2000_ASIC_DATA, (u_int16_t *)data,
|
||||
l >> 1);
|
||||
}
|
||||
/* Save last byte, if necessary. */
|
||||
if (l & 1) {
|
||||
data += l & ~1;
|
||||
savebyte[0] = *data;
|
||||
wantbyte = 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (wantbyte) {
|
||||
savebyte[1] = 0;
|
||||
bus_space_write_2(asict, asich, NE2000_ASIC_DATA,
|
||||
*(u_int16_t *)savebyte);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Wait for remote DMA to complete. This is necessary because on the
|
||||
* transmit side, data is handled internally by the NIC in bursts, and
|
||||
* we can't start another remote DMA until this one completes. Not
|
||||
* waiting causes really bad things to happen - like the NIC wedging
|
||||
* the bus.
|
||||
*/
|
||||
while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) !=
|
||||
ED_ISR_RDC) && --maxwait);
|
||||
|
||||
if (maxwait == 0) {
|
||||
log(LOG_WARNING,
|
||||
"%s: remote transmit DMA failed to complete\n",
|
||||
sc->sc_dev.dv_xname);
|
||||
dp8390_reset(sc);
|
||||
}
|
||||
|
||||
return (savelen);
|
||||
}
|
||||
|
||||
/*
|
||||
* Given a source and destination address, copy 'amout' of a packet from
|
||||
* the ring buffer into a linear destination buffer. Takes into account
|
||||
* ring-wrap.
|
||||
*/
|
||||
int
|
||||
ne2000_ring_copy(sc, src, dst, amount)
|
||||
struct dp8390_softc *sc;
|
||||
int src;
|
||||
caddr_t dst;
|
||||
u_short amount;
|
||||
{
|
||||
struct ne2000_softc *nsc = (struct ne2000_softc *)sc;
|
||||
bus_space_tag_t nict = sc->sc_regt;
|
||||
bus_space_handle_t nich = sc->sc_regh;
|
||||
bus_space_tag_t asict = nsc->sc_asict;
|
||||
bus_space_handle_t asich = nsc->sc_asich;
|
||||
u_short tmp_amount;
|
||||
int useword = (nsc->sc_type == NE2000_TYPE_NE2000);
|
||||
|
||||
/* Does copy wrap to lower addr in ring buffer? */
|
||||
if (src + amount > sc->mem_end) {
|
||||
tmp_amount = sc->mem_end - src;
|
||||
|
||||
/* Copy amount up to end of NIC memory. */
|
||||
ne2000_readmem(nict, nich, asict, asich, src,
|
||||
(u_int8_t *)dst, tmp_amount, useword);
|
||||
|
||||
amount -= tmp_amount;
|
||||
src = sc->mem_ring;
|
||||
dst += tmp_amount;
|
||||
}
|
||||
|
||||
ne2000_readmem(nict, nich, asict, asich, src, (u_int8_t *)dst,
|
||||
amount, useword);
|
||||
|
||||
return (src + amount);
|
||||
}
|
||||
|
||||
void
|
||||
ne2000_read_hdr(sc, buf, hdr)
|
||||
struct dp8390_softc *sc;
|
||||
int buf;
|
||||
struct dp8390_ring *hdr;
|
||||
{
|
||||
struct ne2000_softc *nsc = (struct ne2000_softc *)sc;
|
||||
|
||||
ne2000_readmem(sc->sc_regt, sc->sc_regh, nsc->sc_asict, nsc->sc_asich,
|
||||
buf, (u_int8_t *)hdr, sizeof(struct dp8390_ring),
|
||||
(nsc->sc_type == NE2000_TYPE_NE2000));
|
||||
}
|
||||
|
||||
int
|
||||
ne2000_test_mem(sc)
|
||||
struct dp8390_softc *sc;
|
||||
{
|
||||
|
||||
/* Noop. */
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Given a NIC memory source address and a host memory destination address,
|
||||
* copy 'amount' from NIC to host using programmed i/o. The 'amount' is
|
||||
* rounded up to a word - ok as long as mbufs are word sized.
|
||||
*/
|
||||
void
|
||||
ne2000_readmem(nict, nich, asict, asich, src, dst, amount, useword)
|
||||
bus_space_tag_t nict;
|
||||
bus_space_handle_t nich;
|
||||
bus_space_tag_t asict;
|
||||
bus_space_handle_t asich;
|
||||
int src;
|
||||
u_int8_t *dst;
|
||||
size_t amount;
|
||||
int useword;
|
||||
{
|
||||
|
||||
/* Select page 0 registers. */
|
||||
bus_space_write_1(nict, nich, ED_P0_CR,
|
||||
ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
|
||||
|
||||
/* Round up to a word. */
|
||||
if (amount & 1)
|
||||
++amount;
|
||||
|
||||
/* Set up DMA byte count. */
|
||||
bus_space_write_1(nict, nich, ED_P0_RBCR0, amount);
|
||||
bus_space_write_1(nict, nich, ED_P0_RBCR1, amount >> 8);
|
||||
|
||||
/* Set up source address in NIC mem. */
|
||||
bus_space_write_1(nict, nich, ED_P0_RSAR0, src);
|
||||
bus_space_write_1(nict, nich, ED_P0_RSAR1, src >> 8);
|
||||
|
||||
bus_space_write_1(nict, nich, ED_P0_CR,
|
||||
ED_CR_RD0 | ED_CR_PAGE_0 | ED_CR_STA);
|
||||
|
||||
if (useword)
|
||||
bus_space_read_multi_2(asict, asich, NE2000_ASIC_DATA,
|
||||
(u_int16_t *)dst, amount >> 1);
|
||||
else
|
||||
bus_space_read_multi_1(asict, asich, NE2000_ASIC_DATA,
|
||||
dst, amount);
|
||||
}
|
||||
|
||||
/*
|
||||
* Stripped down routine for writing a linear buffer to NIC memory. Only
|
||||
* used in the probe routine to test the memory. 'len' must be even.
|
||||
*/
|
||||
void
|
||||
ne2000_writemem(nict, nich, asict, asich, src, dst, len, useword)
|
||||
bus_space_tag_t nict;
|
||||
bus_space_handle_t nich;
|
||||
bus_space_tag_t asict;
|
||||
bus_space_handle_t asich;
|
||||
u_int8_t *src;
|
||||
int dst;
|
||||
size_t len;
|
||||
int useword;
|
||||
{
|
||||
int maxwait = 100; /* about 120us */
|
||||
|
||||
/* Select page 0 registers. */
|
||||
bus_space_write_1(nict, nich, ED_P0_CR,
|
||||
ED_CR_RD2 | ED_CR_PAGE_0 | ED_CR_STA);
|
||||
|
||||
/* Reset remote DMA complete flag. */
|
||||
bus_space_write_1(nict, nich, ED_P0_ISR, ED_ISR_RDC);
|
||||
|
||||
/* Set up DMA byte count. */
|
||||
bus_space_write_1(nict, nich, ED_P0_RBCR0, len);
|
||||
bus_space_write_1(nict, nich, ED_P0_RBCR1, len >> 8);
|
||||
|
||||
/* Set up destination address in NIC mem. */
|
||||
bus_space_write_1(nict, nich, ED_P0_RSAR0, dst);
|
||||
bus_space_write_1(nict, nich, ED_P0_RSAR1, dst >> 8);
|
||||
|
||||
/* Set remote DMA write. */
|
||||
bus_space_write_1(nict, nich, ED_P0_CR,
|
||||
ED_CR_RD1 | ED_CR_PAGE_0 | ED_CR_STA);
|
||||
|
||||
if (useword)
|
||||
bus_space_write_multi_2(asict, asich, NE2000_ASIC_DATA,
|
||||
(u_int16_t *)src, len >> 1);
|
||||
else
|
||||
bus_space_write_multi_1(asict, asich, NE2000_ASIC_DATA,
|
||||
src, len);
|
||||
|
||||
/*
|
||||
* Wait for remote DMA to complete. This is necessary because on the
|
||||
* transmit side, data is handled internally by the NIC in bursts, and
|
||||
* we can't start another remote DMA until this one completes. Not
|
||||
* waiting causes really bad things to happen - like the NIC wedging
|
||||
* the bus.
|
||||
*/
|
||||
while (((bus_space_read_1(nict, nich, ED_P0_ISR) & ED_ISR_RDC) !=
|
||||
ED_ISR_RDC) && --maxwait);
|
||||
|
||||
if (maxwait == 0)
|
||||
printf("ne2000_writemem: failed to complete\n");
|
||||
}
|
|
@ -0,0 +1,32 @@
|
|||
/* $NetBSD: ne2000reg.h,v 1.2 1997/10/14 22:54:11 thorpej Exp $ */
|
||||
|
||||
/*
|
||||
* National Semiconductor DS8390 NIC register definitions.
|
||||
*
|
||||
* Copyright (C) 1993, David Greenman. This software may be used, modified,
|
||||
* copied, distributed, and sold, in both source and binary form provided that
|
||||
* the above copyright and these terms are retained. Under no circumstances is
|
||||
* the author responsible for the proper functioning of this software, nor does
|
||||
* the author assume any responsibility for damages incurred with its use.
|
||||
*/
|
||||
|
||||
#ifndef _DEV_IC_NE2000REG_H_
|
||||
#define _DEV_IC_NE2000REG_H_
|
||||
|
||||
/*
|
||||
* Register group offsets from base.
|
||||
*/
|
||||
#define NE2000_NIC_OFFSET 0x00
|
||||
#define NE2000_ASIC_OFFSET 0x10
|
||||
|
||||
#define NE2000_NIC_NPORTS 0x10
|
||||
#define NE2000_ASIC_NPORTS 0x10
|
||||
#define NE2000_NPORTS 0x20
|
||||
|
||||
/*
|
||||
* NE2000 ASIC registers (given as offsets from ASIC base).
|
||||
*/
|
||||
#define NE2000_ASIC_DATA 0x00 /* remote DMA/data register */
|
||||
#define NE2000_ASIC_RESET 0x0f /* reset on read */
|
||||
|
||||
#endif /* _DEV_IC_NE2000REG_H_ */
|
|
@ -0,0 +1,60 @@
|
|||
/* $NetBSD: ne2000var.h,v 1.2 1997/10/14 22:54:12 thorpej Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1997 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
|
||||
* NASA Ames Research Center.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef _DEV_IC_NE2000VAR_H_
|
||||
#define _DEV_IC_NE2000VAR_H_
|
||||
|
||||
struct ne2000_softc {
|
||||
struct dp8390_softc sc_dp8390;
|
||||
|
||||
bus_space_tag_t sc_asict; /* space tag for ASIC */
|
||||
bus_space_handle_t sc_asich; /* space handle for ASIC */
|
||||
|
||||
int sc_type;
|
||||
};
|
||||
|
||||
/* sc_type */
|
||||
#define NE2000_TYPE_NE1000 1
|
||||
#define NE2000_TYPE_NE2000 2
|
||||
|
||||
void ne2000_attach __P((struct ne2000_softc *, u_int8_t *));
|
||||
int ne2000_detect __P((bus_space_tag_t, bus_space_handle_t,
|
||||
bus_space_tag_t, bus_space_handle_t));
|
||||
|
||||
#endif /* _DEV_IC_NE2000VAR_H_ */
|
Loading…
Reference in New Issue