591 lines
16 KiB
C
591 lines
16 KiB
C
/* $NetBSD: we.c,v 1.17 2010/03/19 15:59:22 tsutsui Exp $ */
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/*-
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* Copyright (c) 1997, 1998 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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*
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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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* Device driver for the Western Digital/SMC 8003 and 8013 series,
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* and the SMC Elite Ultra (8216).
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: we.c,v 1.17 2010/03/19 15:59:22 tsutsui Exp $");
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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_media.h>
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#include <net/if_ether.h>
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#include <sys/bus.h>
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#include <sys/bswap.h>
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#include <sys/intr.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.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/wereg.h>
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#include <dev/ic/wevar.h>
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#ifndef __BUS_SPACE_HAS_STREAM_METHODS
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#define bus_space_read_region_stream_2 bus_space_read_region_2
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#define bus_space_write_stream_2 bus_space_write_2
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#define bus_space_write_region_stream_2 bus_space_write_region_2
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#endif
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static void we_set_media(struct we_softc *, int);
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static void we_media_init(struct dp8390_softc *);
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static int we_mediachange(struct dp8390_softc *);
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static void we_mediastatus(struct dp8390_softc *, struct ifmediareq *);
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static void we_recv_int(struct dp8390_softc *);
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static void we_init_card(struct dp8390_softc *);
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static int we_write_mbuf(struct dp8390_softc *, struct mbuf *, int);
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static int we_ring_copy(struct dp8390_softc *, int, void *, u_short);
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static void we_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *);
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static int we_test_mem(struct dp8390_softc *);
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static inline void we_readmem(struct we_softc *, int, uint8_t *, int);
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/*
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* Delay needed when switching 16-bit access to shared memory.
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*/
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#define WE_DELAY(wsc) delay(3)
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/*
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* Enable card RAM, and 16-bit access.
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*/
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#define WE_MEM_ENABLE(wsc) \
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if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) { \
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if ((wsc)->sc_flags & WE_16BIT_ENABLE) \
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bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \
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WE_LAAR, (wsc)->sc_laar_proto | WE_LAAR_M16EN); \
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bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \
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WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB); \
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WE_DELAY((wsc)); \
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}
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/*
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* Disable card RAM, and 16-bit access.
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*/
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#define WE_MEM_DISABLE(wsc) \
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if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) { \
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bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \
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WE_MSR, (wsc)->sc_msr_proto); \
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if ((wsc)->sc_flags & WE_16BIT_ENABLE) \
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bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich, \
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WE_LAAR, (wsc)->sc_laar_proto); \
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WE_DELAY((wsc)); \
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}
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int
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we_config(device_t self, struct we_softc *wsc, const char *typestr)
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{
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struct dp8390_softc *sc = &wsc->sc_dp8390;
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uint8_t x;
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int i, forced_16bit = 0;
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/*
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* Allow user to override 16-bit mode. 8-bit takes precedence.
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*/
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if (device_cfdata(self)->cf_flags & DP8390_FORCE_16BIT_MODE) {
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wsc->sc_flags |= WE_16BIT_ENABLE;
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forced_16bit = 1;
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}
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if (device_cfdata(self)->cf_flags & DP8390_FORCE_8BIT_MODE)
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wsc->sc_flags &= ~WE_16BIT_ENABLE;
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/* Registers are linear. */
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for (i = 0; i < 16; i++)
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sc->sc_reg_map[i] = i;
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/* Now we can use the NIC_{GET,PUT}() macros. */
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aprint_normal_dev(self, "%s Ethernet (%s-bit)\n",
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typestr, wsc->sc_flags & WE_16BIT_ENABLE ? "16" : "8");
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/* Get station address from EEPROM. */
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for (i = 0; i < ETHER_ADDR_LEN; i++)
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sc->sc_enaddr[i] =
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bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_PROM + i);
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/*
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* Set upper address bits and 8/16 bit access to shared memory.
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*/
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if (sc->is790) {
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wsc->sc_laar_proto =
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bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR) &
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~WE_LAAR_M16EN;
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR,
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wsc->sc_laar_proto |
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(wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0));
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} else if ((wsc->sc_type & WE_SOFTCONFIG) ||
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#ifdef TOSH_ETHER
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(wsc->sc_type == WE_TYPE_TOSHIBA1) ||
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(wsc->sc_type == WE_TYPE_TOSHIBA4) ||
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#endif
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(forced_16bit) ||
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(wsc->sc_type == WE_TYPE_WD8013EBT)) {
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wsc->sc_laar_proto = (wsc->sc_maddr >> 19) & WE_LAAR_ADDRHI;
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if (wsc->sc_flags & WE_16BIT_ENABLE)
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wsc->sc_laar_proto |= WE_LAAR_L16EN;
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR,
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wsc->sc_laar_proto |
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(wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0));
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}
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/*
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* Set address and enable interface shared memory.
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*/
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if (sc->is790) {
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x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR);
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich,
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WE790_HWR, x | WE790_HWR_SWH);
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_RAR,
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((wsc->sc_maddr >> WE790_RAR_OFF_SHIFT) & WE790_RAR_OFF) |
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((wsc->sc_maddr & (1 << WE790_RAR_BASE_SHIFT)) != 0 ?
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WE790_RAR_BASE1 : WE790_RAR_BASE0) |
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(bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_RAR) &
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~(WE790_RAR_OFF | WE790_RAR_BASE)));
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR, x);
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wsc->sc_msr_proto = 0x00;
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sc->cr_proto = 0x00;
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} else {
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#ifdef TOSH_ETHER
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if (wsc->sc_type == WE_TYPE_TOSHIBA1 ||
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wsc->sc_type == WE_TYPE_TOSHIBA4) {
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/* XXX MAGIC CONSTANTS XXX */
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich,
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WE_MSR + 1,
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((wsc->sc_maddr >> 8) & 0xe0) | 0x04);
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich,
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WE_MSR + 2,
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((wsc->sc_maddr >> 16) & 0x0f));
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wsc->sc_msr_proto = WE_MSR_POW;
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} else
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#endif
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wsc->sc_msr_proto = (wsc->sc_maddr >> 13) &
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WE_MSR_ADDR;
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sc->cr_proto = ED_CR_RD2;
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}
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bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR,
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wsc->sc_msr_proto | WE_MSR_MENB);
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WE_DELAY(wsc);
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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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* 16-bit cards also get word-wide DMA transfers.
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*/
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sc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS |
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(wsc->sc_flags & WE_16BIT_ENABLE ? ED_DCR_WTS : 0);
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sc->test_mem = we_test_mem;
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sc->ring_copy = we_ring_copy;
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sc->write_mbuf = we_write_mbuf;
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sc->read_hdr = we_read_hdr;
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sc->recv_int = we_recv_int;
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sc->init_card = we_init_card;
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sc->sc_mediachange = we_mediachange;
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sc->sc_mediastatus = we_mediastatus;
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sc->mem_start = 0;
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/* sc->mem_size has to be set by frontend */
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sc->sc_flags = device_cfdata(self)->cf_flags;
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/* Do generic parts of attach. */
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if (wsc->sc_type & WE_SOFTCONFIG)
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sc->sc_media_init = we_media_init;
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else
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sc->sc_media_init = dp8390_media_init;
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if (dp8390_config(sc)) {
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aprint_error_dev(self, "configuration failed\n");
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return 1;
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}
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/*
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* Disable 16-bit access to shared memory - we leave it disabled
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* so that:
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*
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* (1) machines reboot properly when the board is set to
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* 16-bit mode and there are conflicting 8-bit devices
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* within the same 128k address space as this board's
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* shared memory, and
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*
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* (2) so that other 8-bit devices with shared memory
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* in this same 128k address space will work.
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*/
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WE_MEM_DISABLE(wsc);
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return 0;
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}
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static int
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we_test_mem(struct dp8390_softc *sc)
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{
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struct we_softc *wsc = (struct we_softc *)sc;
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bus_space_tag_t memt = sc->sc_buft;
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bus_space_handle_t memh = sc->sc_bufh;
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bus_size_t memsize = sc->mem_size;
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int i;
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if (wsc->sc_flags & WE_16BIT_ENABLE)
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bus_space_set_region_2(memt, memh, 0, 0, memsize >> 1);
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else
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bus_space_set_region_1(memt, memh, 0, 0, memsize);
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if (wsc->sc_flags & WE_16BIT_ENABLE) {
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for (i = 0; i < memsize; i += 2) {
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if (bus_space_read_2(memt, memh, i) != 0)
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goto fail;
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}
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} else {
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for (i = 0; i < memsize; i++) {
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if (bus_space_read_1(memt, memh, i) != 0)
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goto fail;
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}
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}
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return 0;
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fail:
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aprint_error_dev(sc->sc_dev,
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"failed to clear shared memory at offset 0x%x\n", i);
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WE_MEM_DISABLE(wsc);
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return 1;
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}
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/*
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* Given a NIC memory source address and a host memory destination address,
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* copy 'len' from NIC to host using shared memory. The 'len' is rounded
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* up to a word - ok as long as mbufs are word-sized.
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*/
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static inline void
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we_readmem(struct we_softc *wsc, int from, uint8_t *to, int len)
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{
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bus_space_tag_t memt = wsc->sc_dp8390.sc_buft;
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bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh;
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if (len & 1)
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++len;
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if (wsc->sc_flags & WE_16BIT_ENABLE)
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bus_space_read_region_stream_2(memt, memh, from,
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(uint16_t *)to, len >> 1);
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else
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bus_space_read_region_1(memt, memh, from,
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to, len);
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}
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static int
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we_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf)
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{
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struct we_softc *wsc = (struct we_softc *)sc;
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bus_space_tag_t memt = wsc->sc_dp8390.sc_buft;
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bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh;
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uint8_t *data, savebyte[2];
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int savelen, len, leftover;
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#ifdef DIAGNOSTIC
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uint8_t *lim;
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#endif
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savelen = m->m_pkthdr.len;
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WE_MEM_ENABLE(wsc);
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/*
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* 8-bit boards are simple; no alignment tricks are necessary.
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*/
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if ((wsc->sc_flags & WE_16BIT_ENABLE) == 0) {
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for (; m != NULL; buf += m->m_len, m = m->m_next)
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bus_space_write_region_1(memt, memh,
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buf, mtod(m, uint8_t *), m->m_len);
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if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) {
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bus_space_set_region_1(memt, memh,
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buf, 0, ETHER_MIN_LEN - ETHER_CRC_LEN - savelen);
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savelen = ETHER_MIN_LEN - ETHER_CRC_LEN;
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}
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goto out;
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}
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/* Start out with no leftover data. */
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leftover = 0;
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savebyte[0] = savebyte[1] = 0;
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for (; m != NULL; m = m->m_next) {
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len = m->m_len;
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if (len == 0)
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continue;
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data = mtod(m, uint8_t *);
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#ifdef DIAGNOSTIC
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lim = data + len;
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#endif
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while (len > 0) {
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if (leftover) {
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/*
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* Data left over (from mbuf or realignment).
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* Buffer the next byte, and write it and
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* the leftover data out.
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*/
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savebyte[1] = *data++;
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len--;
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bus_space_write_stream_2(memt, memh, buf,
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*(uint16_t *)savebyte);
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buf += 2;
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leftover = 0;
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} else if (BUS_SPACE_ALIGNED_POINTER(data, uint16_t)
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== 0) {
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/*
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* Unaligned dta; buffer the next byte.
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*/
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savebyte[0] = *data++;
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len--;
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leftover = 1;
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} else {
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/*
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* Aligned data; output contiguous words as
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* much as we can, then buffer the remaining
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* byte, if any.
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*/
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leftover = len & 1;
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len &= ~1;
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bus_space_write_region_stream_2(memt, memh,
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buf, (uint16_t *)data, len >> 1);
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data += len;
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buf += len;
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if (leftover)
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savebyte[0] = *data++;
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len = 0;
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}
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}
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if (len < 0)
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panic("we_write_mbuf: negative len");
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#ifdef DIAGNOSTIC
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if (data != lim)
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panic("we_write_mbuf: data != lim");
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#endif
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}
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if (leftover) {
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savebyte[1] = 0;
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bus_space_write_stream_2(memt, memh, buf,
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*(uint16_t *)savebyte);
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buf += 2;
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}
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if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) {
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bus_space_set_region_2(memt, memh,
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buf, 0, (ETHER_MIN_LEN - ETHER_CRC_LEN - savelen) >> 1);
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savelen = ETHER_MIN_LEN - ETHER_CRC_LEN;
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}
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out:
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WE_MEM_DISABLE(wsc);
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return savelen;
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}
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static int
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we_ring_copy(struct dp8390_softc *sc, int src, void *dstv, u_short amount)
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{
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uint8_t *dst = dstv;
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struct we_softc *wsc = (struct we_softc *)sc;
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u_short tmp_amount;
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/* Does copy wrap to lower addr in ring buffer? */
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if (src + amount > sc->mem_end) {
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tmp_amount = sc->mem_end - src;
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/* Copy amount up to end of NIC memory. */
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we_readmem(wsc, src, dst, tmp_amount);
|
|
|
|
amount -= tmp_amount;
|
|
src = sc->mem_ring;
|
|
dst += tmp_amount;
|
|
}
|
|
|
|
we_readmem(wsc, src, dst, amount);
|
|
|
|
return src + amount;
|
|
}
|
|
|
|
static void
|
|
we_read_hdr(struct dp8390_softc *sc, int packet_ptr,
|
|
struct dp8390_ring *packet_hdrp)
|
|
{
|
|
struct we_softc *wsc = (struct we_softc *)sc;
|
|
|
|
we_readmem(wsc, packet_ptr, (uint8_t *)packet_hdrp,
|
|
sizeof(struct dp8390_ring));
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
packet_hdrp->count = bswap16(packet_hdrp->count);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
we_recv_int(struct dp8390_softc *sc)
|
|
{
|
|
struct we_softc *wsc = (struct we_softc *)sc;
|
|
|
|
WE_MEM_ENABLE(wsc);
|
|
dp8390_rint(sc);
|
|
WE_MEM_DISABLE(wsc);
|
|
}
|
|
|
|
static void
|
|
we_media_init(struct dp8390_softc *sc)
|
|
{
|
|
struct we_softc *wsc = (struct we_softc *)sc;
|
|
int defmedia = IFM_ETHER;
|
|
uint8_t x;
|
|
|
|
if (sc->is790) {
|
|
x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR);
|
|
bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR,
|
|
x | WE790_HWR_SWH);
|
|
if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) &
|
|
WE790_GCR_GPOUT)
|
|
defmedia |= IFM_10_2;
|
|
else
|
|
defmedia |= IFM_10_5;
|
|
bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR,
|
|
x & ~WE790_HWR_SWH);
|
|
} else {
|
|
x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR);
|
|
if (x & WE_IRR_OUT2)
|
|
defmedia |= IFM_10_2;
|
|
else
|
|
defmedia |= IFM_10_5;
|
|
}
|
|
|
|
ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus);
|
|
ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_10_2, 0, NULL);
|
|
ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_10_5, 0, NULL);
|
|
ifmedia_set(&sc->sc_media, defmedia);
|
|
}
|
|
|
|
static int
|
|
we_mediachange(struct dp8390_softc *sc)
|
|
{
|
|
|
|
/*
|
|
* Current media is already set up. Just reset the interface
|
|
* to let the new value take hold. The new media will be
|
|
* set up in we_init_card() called via dp8390_init().
|
|
*/
|
|
dp8390_reset(sc);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
we_mediastatus(struct dp8390_softc *sc, struct ifmediareq *ifmr)
|
|
{
|
|
struct ifmedia *ifm = &sc->sc_media;
|
|
|
|
/*
|
|
* The currently selected media is always the active media.
|
|
*/
|
|
ifmr->ifm_active = ifm->ifm_cur->ifm_media;
|
|
}
|
|
|
|
static void
|
|
we_init_card(struct dp8390_softc *sc)
|
|
{
|
|
struct we_softc *wsc = (struct we_softc *)sc;
|
|
struct ifmedia *ifm = &sc->sc_media;
|
|
|
|
if (wsc->sc_init_hook)
|
|
(*wsc->sc_init_hook)(wsc);
|
|
|
|
we_set_media(wsc, ifm->ifm_cur->ifm_media);
|
|
}
|
|
|
|
static void
|
|
we_set_media(struct we_softc *wsc, int media)
|
|
{
|
|
struct dp8390_softc *sc = &wsc->sc_dp8390;
|
|
bus_space_tag_t asict = wsc->sc_asict;
|
|
bus_space_handle_t asich = wsc->sc_asich;
|
|
uint8_t hwr, gcr, irr;
|
|
|
|
if (sc->is790) {
|
|
hwr = bus_space_read_1(asict, asich, WE790_HWR);
|
|
bus_space_write_1(asict, asich, WE790_HWR,
|
|
hwr | WE790_HWR_SWH);
|
|
gcr = bus_space_read_1(asict, asich, WE790_GCR);
|
|
if (IFM_SUBTYPE(media) == IFM_10_2)
|
|
gcr |= WE790_GCR_GPOUT;
|
|
else
|
|
gcr &= ~WE790_GCR_GPOUT;
|
|
bus_space_write_1(asict, asich, WE790_GCR,
|
|
gcr | WE790_GCR_LIT);
|
|
bus_space_write_1(asict, asich, WE790_HWR,
|
|
hwr & ~WE790_HWR_SWH);
|
|
return;
|
|
}
|
|
|
|
irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR);
|
|
if (IFM_SUBTYPE(media) == IFM_10_2)
|
|
irr |= WE_IRR_OUT2;
|
|
else
|
|
irr &= ~WE_IRR_OUT2;
|
|
bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr);
|
|
}
|