42747553f4
This should cover all the remaining cases in the kernel. Discussed in: freebsd-current
495 lines
13 KiB
C
495 lines
13 KiB
C
/* $NetBSD: if_le_ledma.c,v 1.26 2005/12/11 12:23:44 christos 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 Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/endian.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/socket.h>
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#include <dev/ofw/ofw_bus.h>
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#include <machine/bus.h>
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#include <machine/ofw_machdep.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_var.h>
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#include <net/if_media.h>
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#include <sparc64/sbus/lsi64854reg.h>
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#include <sparc64/sbus/lsi64854var.h>
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#include <dev/le/lancereg.h>
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#include <dev/le/lancevar.h>
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#include <dev/le/am7990var.h>
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#define LEDMA_ALIGNMENT 8 /* ring desc. alignmet for NCR92C990 */
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#define LEDMA_BOUNDARY (16*1024*1024) /* must not cross 16MB boundary */
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#define LEDMA_MEMSIZE (16*1024) /* LANCE memory size */
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#define LEREG1_RDP 0 /* Register Data Port */
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#define LEREG1_RAP 2 /* Register Address Port */
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struct le_dma_softc {
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struct am7990_softc sc_am7990; /* glue to MI code */
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struct resource *sc_rres;
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struct resource *sc_ires;
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void *sc_ih;
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bus_dma_tag_t sc_dmat;
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bus_dmamap_t sc_dmam;
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bus_addr_t sc_laddr; /* LANCE DMA address */
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struct lsi64854_softc *sc_dma; /* pointer to DMA engine */
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};
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static device_probe_t le_dma_probe;
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static device_attach_t le_dma_attach;
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static device_detach_t le_dma_detach;
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static device_resume_t le_dma_resume;
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static device_suspend_t le_dma_suspend;
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static device_method_t le_dma_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, le_dma_probe),
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DEVMETHOD(device_attach, le_dma_attach),
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DEVMETHOD(device_detach, le_dma_detach),
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/* We can just use the suspend method here. */
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DEVMETHOD(device_shutdown, le_dma_suspend),
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DEVMETHOD(device_suspend, le_dma_suspend),
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DEVMETHOD(device_resume, le_dma_resume),
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{ 0, 0 }
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};
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DEFINE_CLASS_0(le, le_dma_driver, le_dma_methods, sizeof(struct le_dma_softc));
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DRIVER_MODULE(le, dma, le_dma_driver, le_devclass, 0, 0);
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MODULE_DEPEND(le, dma, 1, 1, 1);
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MODULE_DEPEND(le, ether, 1, 1, 1);
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/*
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* Media types supported
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*/
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static const int le_dma_supmedia[] = {
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IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0),
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IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0),
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IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0)
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};
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static void le_dma_wrcsr(struct lance_softc *, uint16_t, uint16_t);
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static uint16_t le_dma_rdcsr(struct lance_softc *, uint16_t);
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static void le_dma_setutp(struct lance_softc *);
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static void le_dma_setaui(struct lance_softc *);
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static int le_dma_supmediachange(struct lance_softc *);
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static void le_dma_supmediastatus(struct lance_softc *, struct ifmediareq *);
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static void le_dma_hwreset(struct lance_softc *);
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static int le_dma_hwintr(struct lance_softc *);
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static void le_dma_nocarrier(struct lance_softc *);
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static bus_dmamap_callback_t le_dma_dma_callback;
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static void
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le_dma_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
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{
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struct le_dma_softc *lesc = (struct le_dma_softc *)sc;
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bus_write_2(lesc->sc_rres, LEREG1_RAP, port);
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bus_barrier(lesc->sc_rres, LEREG1_RAP, 2, BUS_SPACE_BARRIER_WRITE);
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bus_write_2(lesc->sc_rres, LEREG1_RDP, val);
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}
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static uint16_t
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le_dma_rdcsr(struct lance_softc *sc, uint16_t port)
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{
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struct le_dma_softc *lesc = (struct le_dma_softc *)sc;
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bus_write_2(lesc->sc_rres, LEREG1_RAP, port);
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bus_barrier(lesc->sc_rres, LEREG1_RAP, 2, BUS_SPACE_BARRIER_WRITE);
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return (bus_read_2(lesc->sc_rres, LEREG1_RDP));
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}
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static void
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le_dma_setutp(struct lance_softc *sc)
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{
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struct lsi64854_softc *dma = ((struct le_dma_softc *)sc)->sc_dma;
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L64854_SCSR(dma, L64854_GCSR(dma) | E_TP_AUI);
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DELAY(20000); /* We must not touch the LANCE chip for 20ms. */
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}
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static void
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le_dma_setaui(struct lance_softc *sc)
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{
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struct lsi64854_softc *dma = ((struct le_dma_softc *)sc)->sc_dma;
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L64854_SCSR(dma, L64854_GCSR(dma) & ~E_TP_AUI);
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DELAY(20000); /* We must not touch the LANCE chip for 20ms. */
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}
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static int
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le_dma_supmediachange(struct lance_softc *sc)
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{
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struct ifmedia *ifm = &sc->sc_media;
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if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
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return (EINVAL);
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/*
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* Switch to the selected media. If autoselect is set, we don't
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* really have to do anything. We'll switch to the other media
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* when we detect loss of carrier.
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*/
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switch (IFM_SUBTYPE(ifm->ifm_media)) {
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case IFM_10_T:
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le_dma_setutp(sc);
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break;
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case IFM_10_5:
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le_dma_setaui(sc);
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break;
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case IFM_AUTO:
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break;
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default:
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return (EINVAL);
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}
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return (0);
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}
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static void
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le_dma_supmediastatus(struct lance_softc *sc, struct ifmediareq *ifmr)
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{
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struct lsi64854_softc *dma = ((struct le_dma_softc *)sc)->sc_dma;
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/*
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* Notify the world which media we're currently using.
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*/
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if (L64854_GCSR(dma) & E_TP_AUI)
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ifmr->ifm_active = IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0);
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else
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ifmr->ifm_active = IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0);
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}
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static void
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le_dma_hwreset(struct lance_softc *sc)
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{
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struct le_dma_softc *lesc = (struct le_dma_softc *)sc;
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struct lsi64854_softc *dma = lesc->sc_dma;
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uint32_t aui_bit, csr;
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/*
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* Reset DMA channel.
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*/
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csr = L64854_GCSR(dma);
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aui_bit = csr & E_TP_AUI;
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DMA_RESET(dma);
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/* Write bits 24-31 of Lance address. */
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bus_write_4(dma->sc_res, L64854_REG_ENBAR,
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lesc->sc_laddr & 0xff000000);
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DMA_ENINTR(dma);
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/*
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* Disable E-cache invalidates on chip writes.
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* Retain previous cable selection bit.
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*/
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csr = L64854_GCSR(dma);
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csr |= (E_DSBL_WR_INVAL | aui_bit);
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L64854_SCSR(dma, csr);
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DELAY(20000); /* We must not touch the LANCE chip for 20ms. */
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}
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static int
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le_dma_hwintr(struct lance_softc *sc)
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{
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struct le_dma_softc *lesc = (struct le_dma_softc *)sc;
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struct lsi64854_softc *dma = lesc->sc_dma;
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return (DMA_INTR(dma));
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}
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static void
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le_dma_nocarrier(struct lance_softc *sc)
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{
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struct le_dma_softc *lesc = (struct le_dma_softc *)sc;
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/*
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* Check if the user has requested a certain cable type, and
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* if so, honor that request.
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*/
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if (L64854_GCSR(lesc->sc_dma) & E_TP_AUI) {
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switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
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case IFM_10_5:
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case IFM_AUTO:
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if_printf(sc->sc_ifp, "lost carrier on UTP port, "
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"switching to AUI port\n");
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le_dma_setaui(sc);
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}
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} else {
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switch (IFM_SUBTYPE(sc->sc_media.ifm_media)) {
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case IFM_10_T:
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case IFM_AUTO:
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if_printf(sc->sc_ifp, "lost carrier on AUI port, "
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"switching to UTP port\n");
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le_dma_setutp(sc);
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}
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}
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}
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static void
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le_dma_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error)
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{
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struct le_dma_softc *lesc = (struct le_dma_softc *)xsc;
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if (error != 0)
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return;
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KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__));
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lesc->sc_laddr = segs[0].ds_addr;
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}
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static int
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le_dma_probe(device_t dev)
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{
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if (strcmp(ofw_bus_get_name(dev), "le") == 0) {
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device_set_desc(dev, "LANCE Ethernet");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static int
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le_dma_attach(device_t dev)
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{
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struct le_dma_softc *lesc;
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struct lsi64854_softc *dma;
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struct lance_softc *sc;
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int error, i;
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lesc = device_get_softc(dev);
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sc = &lesc->sc_am7990.lsc;
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LE_LOCK_INIT(sc, device_get_nameunit(dev));
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/*
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* Establish link to `ledma' device.
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* XXX hackery.
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*/
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dma = (struct lsi64854_softc *)device_get_softc(device_get_parent(dev));
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lesc->sc_dma = dma;
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lesc->sc_dma->sc_client = lesc;
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i = 0;
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lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&i, RF_ACTIVE);
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if (lesc->sc_rres == NULL) {
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device_printf(dev, "cannot allocate registers\n");
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error = ENXIO;
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goto fail_mtx;
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}
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i = 0;
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if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ,
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&i, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
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device_printf(dev, "cannot allocate interrupt\n");
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error = ENXIO;
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goto fail_rres;
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}
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/* Attach the DMA engine. */
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error = lsi64854_attach(dma);
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if (error != 0) {
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device_printf(dev, "lsi64854_attach failed\n");
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goto fail_ires;
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}
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sc->sc_memsize = LEDMA_MEMSIZE;
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error = bus_dma_tag_create(
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dma->sc_parent_dmat, /* parent */
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LEDMA_ALIGNMENT, /* alignment */
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LEDMA_BOUNDARY, /* boundary */
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BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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sc->sc_memsize, /* maxsize */
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1, /* nsegments */
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sc->sc_memsize, /* maxsegsize */
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0, /* flags */
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NULL, NULL, /* lockfunc, lockarg */
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&lesc->sc_dmat);
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if (error != 0) {
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device_printf(dev, "cannot allocate buffer DMA tag\n");
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goto fail_lsi;
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}
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error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem,
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BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam);
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if (error != 0) {
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device_printf(dev, "cannot allocate DMA buffer memory\n");
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goto fail_dtag;
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}
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lesc->sc_laddr = 0;
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error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem,
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sc->sc_memsize, le_dma_dma_callback, lesc, 0);
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if (error != 0 || lesc->sc_laddr == 0) {
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device_printf(dev, "cannot load DMA buffer map\n");
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goto fail_dmem;
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}
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sc->sc_addr = lesc->sc_laddr & 0xffffff;
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sc->sc_flags = 0;
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sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
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sc->sc_mediachange = le_dma_supmediachange;
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sc->sc_mediastatus = le_dma_supmediastatus;
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sc->sc_supmedia = le_dma_supmedia;
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sc->sc_nsupmedia = nitems(le_dma_supmedia);
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sc->sc_defaultmedia = le_dma_supmedia[0];
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OF_getetheraddr(dev, sc->sc_enaddr);
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sc->sc_copytodesc = lance_copytobuf_contig;
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sc->sc_copyfromdesc = lance_copyfrombuf_contig;
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sc->sc_copytobuf = lance_copytobuf_contig;
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sc->sc_copyfrombuf = lance_copyfrombuf_contig;
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sc->sc_zerobuf = lance_zerobuf_contig;
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sc->sc_rdcsr = le_dma_rdcsr;
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sc->sc_wrcsr = le_dma_wrcsr;
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sc->sc_hwreset = le_dma_hwreset;
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sc->sc_hwintr = le_dma_hwintr;
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sc->sc_nocarrier = le_dma_nocarrier;
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error = am7990_config(&lesc->sc_am7990, device_get_name(dev),
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device_get_unit(dev));
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if (error != 0) {
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device_printf(dev, "cannot attach Am7990\n");
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goto fail_dmap;
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}
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error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE,
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NULL, am7990_intr, sc, &lesc->sc_ih);
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if (error != 0) {
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device_printf(dev, "cannot set up interrupt\n");
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goto fail_am7990;
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}
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return (0);
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fail_am7990:
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am7990_detach(&lesc->sc_am7990);
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fail_dmap:
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bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
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fail_dmem:
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bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
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fail_dtag:
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bus_dma_tag_destroy(lesc->sc_dmat);
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fail_lsi:
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lsi64854_detach(dma);
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fail_ires:
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bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(lesc->sc_ires),
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lesc->sc_ires);
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fail_rres:
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bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lesc->sc_rres),
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lesc->sc_rres);
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fail_mtx:
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LE_LOCK_DESTROY(sc);
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return (error);
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}
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static int
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le_dma_detach(device_t dev)
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{
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struct le_dma_softc *lesc;
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struct lance_softc *sc;
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int error;
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lesc = device_get_softc(dev);
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sc = &lesc->sc_am7990.lsc;
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bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih);
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am7990_detach(&lesc->sc_am7990);
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bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam);
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bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam);
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bus_dma_tag_destroy(lesc->sc_dmat);
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error = lsi64854_detach(lesc->sc_dma);
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if (error != 0)
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return (error);
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bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(lesc->sc_ires),
|
|
lesc->sc_ires);
|
|
bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lesc->sc_rres),
|
|
lesc->sc_rres);
|
|
LE_LOCK_DESTROY(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
le_dma_suspend(device_t dev)
|
|
{
|
|
struct le_dma_softc *lesc;
|
|
|
|
lesc = device_get_softc(dev);
|
|
|
|
lance_suspend(&lesc->sc_am7990.lsc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
le_dma_resume(device_t dev)
|
|
{
|
|
struct le_dma_softc *lesc;
|
|
|
|
lesc = device_get_softc(dev);
|
|
|
|
lance_resume(&lesc->sc_am7990.lsc);
|
|
|
|
return (0);
|
|
}
|