1537078d8f
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317 lines
9.0 KiB
C
317 lines
9.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005, M. Warner Losh
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* All rights reserved.
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* Copyright (c) 1995, David Greenman
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* All rights reserved.
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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 unmodified, this list of conditions, and the following
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ed.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <net/ethernet.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_dl.h>
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#include <net/if_mib.h>
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#include <net/if_media.h>
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#include <net/bpf.h>
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#include <dev/ed/if_edreg.h>
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#include <dev/ed/if_edvar.h>
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static int ed_probe_gwether(device_t);
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/*
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* Probe and vendor-specific initialization routine for NE1000/2000 boards
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*/
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int
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ed_probe_Novell_generic(device_t dev, int flags)
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{
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struct ed_softc *sc = device_get_softc(dev);
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u_int memsize;
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int error;
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u_char tmp;
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static char test_pattern[32] = "THIS is A memory TEST pattern";
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char test_buffer[32];
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/* Reset the board */
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if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) {
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ed_asic_outb(sc, ED_NOVELL_RESET, 0);
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DELAY(200);
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}
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tmp = ed_asic_inb(sc, ED_NOVELL_RESET);
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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
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*/
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ed_asic_outb(sc, ED_NOVELL_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) XXX
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* - this makes the probe invasive! ...Done against my better
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* judgement. -DLG
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*/
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ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STP);
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DELAY(5000);
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/* Make sure that we really have an 8390 based board */
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if (!ed_probe_generic8390(sc))
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return (ENXIO);
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sc->vendor = ED_VENDOR_NOVELL;
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sc->mem_shared = 0;
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sc->cr_proto = ED_CR_RD2;
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/*
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* Test the ability to read and write to the NIC memory. This has the
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* side affect 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 the
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* readmem routine turns on the start bit in the CR.
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*/
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ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON);
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/* Temporarily initialize DCR for byte operations */
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ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS);
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ed_nic_outb(sc, ED_P0_PSTART, 8192 / ED_PAGE_SIZE);
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ed_nic_outb(sc, ED_P0_PSTOP, 16384 / ED_PAGE_SIZE);
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/*
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* Some devices identify themselves. Some of those devices
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* can't handle being probed, so we allow forcing a mode. If
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* these flags are set, force it, otherwise probe.
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*/
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if (flags & ED_FLAGS_FORCE_8BIT_MODE) {
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sc->isa16bit = 0;
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sc->type = ED_TYPE_NE1000;
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sc->type_str = "NE1000";
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} else if (flags & ED_FLAGS_FORCE_16BIT_MODE) {
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sc->isa16bit = 1;
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sc->type = ED_TYPE_NE2000;
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sc->type_str = "NE2000";
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ed_nic_outb(sc, ED_P0_DCR, ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS);
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ed_nic_outb(sc, ED_P0_PSTART, 16384 / ED_PAGE_SIZE);
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ed_nic_outb(sc, ED_P0_PSTOP, 32768 / ED_PAGE_SIZE);
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} else {
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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 board
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* is an NE2000.
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*/
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ed_pio_writemem(sc, test_pattern, 8192, sizeof(test_pattern));
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ed_pio_readmem(sc, 8192, test_buffer, sizeof(test_pattern));
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if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) {
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sc->type = ED_TYPE_NE1000;
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sc->type_str = "NE1000";
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sc->isa16bit = 0;
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} else {
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/* Not an NE1000 - try NE2000 */
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sc->isa16bit = 1;
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ed_nic_outb(sc, ED_P0_DCR, ED_DCR_WTS | ED_DCR_FT1 | ED_DCR_LS);
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ed_nic_outb(sc, ED_P0_PSTART, 16384 / ED_PAGE_SIZE);
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ed_nic_outb(sc, ED_P0_PSTOP, 32768 / ED_PAGE_SIZE);
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/*
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* Write a test pattern in word mode. If this also fails, then
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* we don't know what this board is.
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*/
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ed_pio_writemem(sc, test_pattern, 16384, sizeof(test_pattern));
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ed_pio_readmem(sc, 16384, test_buffer, sizeof(test_pattern));
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if (bcmp(test_pattern, test_buffer, sizeof(test_pattern)) == 0) {
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sc->type = ED_TYPE_NE2000;
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sc->type_str = "NE2000";
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} else {
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return (ENXIO);
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}
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}
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}
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sc->chip_type = ED_CHIP_TYPE_DP8390;
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/* 8k of memory plus an additional 8k if 16bit */
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memsize = 8192 + sc->isa16bit * 8192;
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sc->mem_size = memsize;
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/* NIC memory doesn'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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sc->mem_start = 8192 + sc->isa16bit * 8192;
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sc->mem_end = sc->mem_start + memsize;
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sc->tx_page_start = memsize / ED_PAGE_SIZE;
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if (ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) {
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error = ed_probe_gwether(dev);
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if (error)
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return (error);
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}
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/*
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* Use one xmit buffer if < 16k, two buffers otherwise (if not told
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* otherwise).
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*/
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if ((memsize < 16384) || (flags & ED_FLAGS_NO_MULTI_BUFFERING))
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sc->txb_cnt = 1;
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else
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sc->txb_cnt = 2;
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sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE;
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sc->rec_page_stop = sc->tx_page_start + memsize / ED_PAGE_SIZE;
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sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
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/* clear any pending interrupts that might have occurred above */
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ed_nic_outb(sc, ED_P0_ISR, 0xff);
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sc->sc_write_mbufs = ed_pio_write_mbufs;
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return (0);
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}
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int
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ed_probe_Novell(device_t dev, int port_rid, int flags)
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{
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struct ed_softc *sc = device_get_softc(dev);
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int error;
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error = ed_alloc_port(dev, port_rid, ED_NOVELL_IO_PORTS);
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if (error)
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return (error);
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sc->asic_offset = ED_NOVELL_ASIC_OFFSET;
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sc->nic_offset = ED_NOVELL_NIC_OFFSET;
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return ed_probe_Novell_generic(dev, flags);
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}
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static int
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ed_probe_gwether(device_t dev)
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{
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int x, i, msize = 0;
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bus_size_t mstart = 0;
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char pbuf0[ED_PAGE_SIZE], pbuf[ED_PAGE_SIZE], tbuf[ED_PAGE_SIZE];
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struct ed_softc *sc = device_get_softc(dev);
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for (i = 0; i < ED_PAGE_SIZE; i++)
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pbuf0[i] = 0;
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/* Clear all the memory. */
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for (x = 1; x < 256; x++)
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ed_pio_writemem(sc, pbuf0, x * 256, ED_PAGE_SIZE);
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/* Search for the start of RAM. */
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for (x = 1; x < 256; x++) {
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ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
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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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ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE);
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ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
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if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0) {
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mstart = x * ED_PAGE_SIZE;
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msize = 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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device_printf(dev, "Cannot find start of RAM.\n");
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return (ENXIO);
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}
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/* Probe the size of RAM. */
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for (x = (mstart / ED_PAGE_SIZE) + 1; x < 256; x++) {
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ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
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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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ed_pio_writemem(sc, pbuf, x * 256, ED_PAGE_SIZE);
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ed_pio_readmem(sc, x * 256, tbuf, ED_PAGE_SIZE);
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if (bcmp(pbuf, tbuf, ED_PAGE_SIZE) == 0)
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msize += ED_PAGE_SIZE;
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else {
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break;
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}
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} else {
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break;
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}
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}
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if (msize == 0) {
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device_printf(dev,
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"Cannot find any RAM, start : %d, x = %d.\n",
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(int)mstart, x);
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return (ENXIO);
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}
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if (bootverbose)
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device_printf(dev,
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"RAM start at %d, size : %d.\n", (int)mstart, msize);
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sc->mem_size = msize;
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sc->mem_start = mstart;
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sc->mem_end = msize + mstart;
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sc->tx_page_start = mstart / ED_PAGE_SIZE;
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return 0;
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}
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void
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ed_Novell_read_mac(struct ed_softc *sc)
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{
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int n;
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uint8_t romdata[16];
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/*
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* Most ne1000/ne2000 compatible cards have their MAC address
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* located in the first few words of the address space. This seems
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* universally true for ISA and PCI implementations, but PC Card
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* devices seem to have more variance.
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*/
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ed_pio_readmem(sc, 0, romdata, 16);
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for (n = 0; n < ETHER_ADDR_LEN; n++)
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sc->enaddr[n] = romdata[n * (sc->isa16bit + 1)];
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}
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