165 lines
3.9 KiB
C
165 lines
3.9 KiB
C
/* $NetBSD: sgc.c,v 1.2 2011/02/18 19:15:06 tsutsui Exp $ */
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/* $OpenBSD: sgc.c,v 1.6 2010/04/15 20:35:21 miod Exp $ */
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/*
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* Copyright (c) 2005, Miodrag Vallat
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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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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/*
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* SGC bus attachment and mapping glue.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <machine/autoconf.h>
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#include <machine/hp300spu.h>
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#include <hp300/dev/sgcreg.h>
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#include <hp300/dev/sgcvar.h>
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#ifdef SGC_DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x) do {} while (/* CONSTCOND */ 0)
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#endif
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struct sgc_softc {
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device_t sc_dev;
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struct bus_space_tag sc_tag;
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};
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static int sgcmatch(device_t, cfdata_t, void *);
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static void sgcattach(device_t, device_t, void *);
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static int sgcprint(void *, const char *);
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CFATTACH_DECL_NEW(sgc, sizeof(struct sgc_softc),
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sgcmatch, sgcattach, NULL, NULL);
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int
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sgcmatch(device_t parent, cfdata_t cf, void *aux)
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{
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static int sgc_matched = 0;
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/* Allow only one instance. */
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if (sgc_matched)
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return 0;
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/*
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* Leave out machines which can not have an SGC bus.
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*/
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switch (machineid) {
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#if 0
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case HP_362:
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case HP_382:
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#endif
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case HP_400:
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case HP_425:
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case HP_433:
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return sgc_matched = 1;
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default:
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return 0;
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}
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}
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void
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sgcattach(device_t parent, device_t self, void *aux)
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{
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struct sgc_softc *sc;
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struct sgc_attach_args saa;
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paddr_t pa;
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void *va;
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int slot, rv;
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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sc = device_private(self);
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sc->sc_dev = self;
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aprint_normal("\n");
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bst = &sc->sc_tag;
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memset(bst, 0, sizeof(struct bus_space_tag));
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bst->bustype = HP300_BUS_SPACE_SGC;
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for (slot = 0; slot < SGC_NSLOTS; slot++) {
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pa = sgc_slottopa(slot);
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if (bus_space_map(bst, pa, PAGE_SIZE, 0, &bsh) != 0) {
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aprint_error_dev(self, "can't map slot %d\n", slot);
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continue;
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}
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va = bus_space_vaddr(bst, bsh);
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/* Check for hardware. */
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rv = badaddr(va);
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bus_space_unmap(bst, bsh, PAGE_SIZE);
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if (rv != 0) {
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DPRINTF(("%s: no valid device at slot %d\n",
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device_xname(self), slot));
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continue;
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}
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memset(&saa, 0, sizeof(saa));
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saa.saa_iot = bst;
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saa.saa_slot = slot;
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/* Attach matching device. */
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config_found(self, &saa, sgcprint);
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}
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}
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int
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sgcprint(void *aux, const char *pnp)
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{
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struct sgc_attach_args *saa = aux;
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if (pnp)
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aprint_normal("unknown SGC card at %s", pnp);
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aprint_normal(" slot %d", saa->saa_slot);
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return UNCONF;
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}
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/*
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* Convert a slot number to a system physical address.
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* This is needed for bus_space.
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*/
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paddr_t
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sgc_slottopa(int slot)
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{
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paddr_t rval;
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if (slot < 0 || slot >= SGC_NSLOTS)
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rval = 0;
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else
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rval = SGC_BASE + (slot * SGC_DEVSIZE);
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return rval;
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}
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