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148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
/* $NetBSD: tc_vsbus.c,v 1.7 2011/06/05 16:12:50 christos Exp $ */
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/*-
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* Copyright (c) 2008 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 Matt Thomas <matt@3am-software.com>.
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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/param.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <machine/pte.h>
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#include <machine/scb.h>
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#include <machine/vsbus.h>
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#include <dev/tc/tcvar.h>
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static int tcbus_match(device_t, cfdata_t, void *);
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static void tcbus_attach(device_t, device_t, void *);
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struct tcbus_softc {
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struct tc_softc sc_tc;
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struct tc_slotdesc sc_slots[1];
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struct vax_bus_dma_tag sc_dmatag;
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struct vax_sgmap sc_sgmap;
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struct evcnt sc_ev;
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bus_space_handle_t sc_memh;
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};
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static bus_dma_tag_t tcbus_dmat;
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CFATTACH_DECL_NEW(tcbus, sizeof(struct tcbus_softc),
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tcbus_match, tcbus_attach, 0, 0);
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static bus_dma_tag_t
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tcbus_get_dma_tag(int slotno)
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{
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return tcbus_dmat;
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}
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static void
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tcbus_intr_establish(device_t dv, void *cookie, int level,
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int (*func)(void *), void *arg)
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{
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struct tcbus_softc * const sc = cookie;
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scb_vecalloc(0x51, (void (*)(void *)) func, arg, SCB_ISTACK,
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&sc->sc_ev);
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}
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static void
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tcbus_intr_disestablish(device_t dv, void *cookie)
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{
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}
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static const struct evcnt *
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tcbus_intr_evcnt(device_t dv, void *cookie)
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{
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return NULL;
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}
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int
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tcbus_match(device_t parent, cfdata_t cfdata, void *aux)
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{
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return 0;
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}
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#define KA4x_TURBO 0x30000000
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#define KA4x_TURBOMAPS 0x35800000
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#define KA4x_TURBOCSR 0x36800000
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void
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tcbus_attach(device_t parent, device_t self, void *aux)
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{
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struct vsbus_attach_args * const va = aux;
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struct tcbus_softc * const sc = device_private(self);
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struct tcbus_attach_args tba;
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struct pte *pte;
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const size_t nentries = 32768;
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int error;
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int i;
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error = bus_space_map(va->va_memt, KA4x_TURBO, 0x10000,
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BUS_SPACE_MAP_LINEAR, &sc->sc_memh);
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if (error) {
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aprint_error(": failed to map TC slot 0: %d\n", error);
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return;
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}
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sc->sc_slots[0].tcs_addr = sc->sc_memh;
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sc->sc_slots[0].tcs_cookie = sc;
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tba.tba_speed = TC_SPEED_12_5_MHZ;
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tba.tba_slots = sc->sc_slots;
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tba.tba_nslots = 1;
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tba.tba_intr_evcnt = tcbus_intr_evcnt;
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tba.tba_intr_establish = tcbus_intr_establish;
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tba.tba_intr_disestablish = tcbus_intr_disestablish;
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tba.tba_get_dma_tag = tcbus_get_dma_tag;
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vax_sgmap_dmatag_init(&sc->sc_dmatag, sc, nentries);
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pte = (struct pte *) vax_map_physmem(KA4x_TURBOMAPS,
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nentries * sizeof(pte[0]));
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for (i = nentries; i > 0; )
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((uint32_t *) pte)[--i] = 0;
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sc->sc_dmatag._sgmap = &sc->sc_sgmap;
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/*
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* Initialize the SGMAP.
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*/
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vax_sgmap_init(&sc->sc_dmatag, &sc->sc_sgmap, "tc_sgmap",
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sc->sc_dmatag._wbase, sc->sc_dmatag._wsize, pte, 0);
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aprint_normal("\n");
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aprint_verbose_dev(self, "32K entry DMA SGMAP at PA 0x%x (VA %p)\n",
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KA4x_TURBOMAPS, pte);
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tcbus_dmat = &sc->sc_dmatag;
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/* XXX: why not config_found(9)?? */
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tcattach(parent, self, &tba);
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}
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