789 lines
19 KiB
C
789 lines
19 KiB
C
/* $NetBSD: nubus.c,v 1.41 1997/08/11 22:53:37 scottr Exp $ */
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/*
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* Copyright (c) 1995, 1996 Allen Briggs. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Allen Briggs.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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 WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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/buf.h>
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#include <sys/conf.h>
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#include <sys/dmap.h>
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#include <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <vm/vm_map.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <machine/vmparam.h>
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#include <machine/param.h>
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#include <machine/cpu.h>
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#include <machine/pte.h>
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#include <machine/viareg.h>
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#include <vm/vm.h>
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#include <mac68k/dev/nubus.h>
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#ifdef DEBUG
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#define NDB_PROBE 0x1
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#define NDB_FOLLOW 0x2
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#define NDB_ARITH 0x4
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static int nubus_debug = 0 /* | NDB_PROBE */;
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#endif
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static int nubus_print __P((void *, const char *));
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static int nubus_match __P((struct device *, struct cfdata *, void *));
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static void nubus_attach __P((struct device *, struct device *, void *));
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static int nubus_video_resource __P((int));
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static int nubus_probe_slot __P((bus_space_tag_t, bus_space_handle_t,
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int, nubus_slot *));
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static u_int32_t nubus_calc_CRC __P((bus_space_tag_t, bus_space_handle_t,
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nubus_slot *));
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static u_long nubus_adjust_ptr __P((u_int8_t, u_long, long));
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static u_int8_t nubus_read_1 __P((bus_space_tag_t, bus_space_handle_t,
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u_int8_t, u_long));
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#ifdef notyet
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static u_int16_t nubus_read_2 __P((bus_space_tag_t, bus_space_handle_t,
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u_int8_t, u_long));
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#endif
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static u_int32_t nubus_read_4 __P((bus_space_tag_t, bus_space_handle_t,
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u_int8_t, u_long));
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struct cfattach nubus_ca = {
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sizeof(struct nubus_softc), nubus_match, nubus_attach
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};
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struct cfdriver nubus_cd = {
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NULL, "nubus", DV_DULL,
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};
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static int
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nubus_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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static int nubus_matched = 0;
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/* Allow only one instance. */
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if (nubus_matched)
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return (0);
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nubus_matched = 1;
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return (1);
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}
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static void
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nubus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct nubus_attach_args na_args;
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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nubus_slot fmtblock;
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nubus_dir dir;
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nubus_dirent dirent;
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nubus_type slottype;
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u_long entry;
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int i, rsrcid;
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u_int8_t lanes;
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printf("\n");
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for (i = NUBUS_MIN_SLOT; i <= NUBUS_MAX_SLOT; i++) {
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na_args.slot = i;
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na_args.na_tag = bst = MAC68K_BUS_SPACE_MEM;
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if (bus_space_map(bst,
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NUBUS_SLOT2PA(na_args.slot), NBMEMSIZE, 0, &bsh)) {
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#ifdef DIAGNOSTIC
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printf("%s: failed to map slot %x, address %p\n",
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self->dv_xname, i, (void *)NUBUS_SLOT2PA(i));
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#endif
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continue;
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}
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if (nubus_probe_slot(bst, bsh, i, &fmtblock) <= 0) {
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notfound:
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bus_space_unmap(bst, bsh, NBMEMSIZE);
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continue;
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}
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rsrcid = 0x80;
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lanes = fmtblock.bytelanes;
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nubus_get_main_dir(&fmtblock, &dir);
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/*
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* Get the resource for the first function on the card.
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* This is assumed to be at resource ID 0x80. If we can
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* not find this entry (as we can not on some video cards),
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* check to see if we can get a different ID from the list
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* of video resources given to us by the booter. If that
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* doesn't work either, take the first resource following
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* the board resource.
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*/
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if (nubus_find_rsrc(bst, bsh,
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&fmtblock, &dir, rsrcid, &dirent) <= 0) {
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if ((rsrcid = nubus_video_resource(i)) == -1) {
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/*
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* Since nubus_find_rsrc failed, the directory
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* is back at its base.
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*/
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entry = dir.curr_ent;
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/*
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* All nubus cards should have a board
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* resource, but be sure that's what it
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* is before we skip it.
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*/
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rsrcid = nubus_read_1(bst, bsh,
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lanes, entry);
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if (rsrcid == 0x1)
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entry = nubus_adjust_ptr(lanes,
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dir.curr_ent, 4);
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rsrcid = nubus_read_1(bst, bsh, lanes, entry);
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#ifdef DEBUG
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if (nubus_debug & NDB_FOLLOW)
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printf("\tUsing rsrc 0x%x.\n", rsrcid);
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#endif
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if (rsrcid == 0xff) /* end of chain */
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goto notfound;
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}
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/*
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* Try to find the resource passed by the booter
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* or the one we just tracked down.
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*/
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if (nubus_find_rsrc(bst, bsh,
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&fmtblock, &dir, rsrcid, &dirent) <= 0)
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goto notfound;
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}
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nubus_get_dir_from_rsrc(&fmtblock, &dirent, &dir);
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if (nubus_find_rsrc(bst, bsh,
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&fmtblock, &dir, NUBUS_RSRC_TYPE, &dirent) <= 0)
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goto notfound;
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if (nubus_get_ind_data(bst, bsh, &fmtblock, &dirent,
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(caddr_t)&slottype, sizeof(nubus_type)) <= 0)
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goto notfound;
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/*
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* If this is a display card, try to pull out the correct
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* display mode as passed by the booter.
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*/
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if (slottype.category == NUBUS_CATEGORY_DISPLAY) {
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int r;
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if ((r = nubus_video_resource(i)) != -1) {
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nubus_get_main_dir(&fmtblock, &dir);
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if (nubus_find_rsrc(bst, bsh,
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&fmtblock, &dir, r, &dirent) <= 0)
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goto notfound;
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nubus_get_dir_from_rsrc(&fmtblock,
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&dirent, &dir);
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if (nubus_find_rsrc(bst, bsh, &fmtblock, &dir,
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NUBUS_RSRC_TYPE, &dirent) <= 0)
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goto notfound;
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if (nubus_get_ind_data(bst, bsh,
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&fmtblock, &dirent, (caddr_t)&slottype,
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sizeof(nubus_type)) <= 0)
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goto notfound;
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rsrcid = r;
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}
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}
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na_args.slot = i;
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na_args.rsrcid = rsrcid;
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na_args.category = slottype.category;
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na_args.type = slottype.type;
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na_args.drsw = slottype.drsw;
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na_args.drhw = slottype.drhw;
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na_args.fmt = &fmtblock;
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bus_space_unmap(bst, bsh, NBMEMSIZE);
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config_found(self, &na_args, nubus_print);
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}
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enable_nubus_intr();
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}
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static int
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nubus_print(aux, pnp)
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void *aux;
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const char *pnp;
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{
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struct nubus_attach_args *na = (struct nubus_attach_args *)aux;
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bus_space_tag_t bst = na->na_tag;
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bus_space_handle_t bsh;
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if (pnp) {
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printf("%s slot %x", pnp, na->slot);
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if (bus_space_map(bst,
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NUBUS_SLOT2PA(na->slot), NBMEMSIZE, 0, &bsh) == 0) {
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printf(": %s", nubus_get_card_name(bst, bsh, na->fmt));
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printf(" (Vendor: %s,", nubus_get_vendor(bst, bsh,
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na->fmt, NUBUS_RSRC_VEND_ID));
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printf(" Part: %s)", nubus_get_vendor(bst, bsh,
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na->fmt, NUBUS_RSRC_VEND_PART));
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bus_space_unmap(bst, bsh, NBMEMSIZE);
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}
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#ifdef DIAGNOSTIC
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else
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printf(":");
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printf(" Type: %04x %04x %04x %04x",
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na->category, na->type, na->drsw, na->drhw);
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#endif
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} else {
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printf(" slot %x", na->slot);
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}
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return (UNCONF);
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}
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static int
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nubus_video_resource(slot)
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int slot;
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{
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extern u_int16_t mac68k_vrsrc_vec[];
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int i;
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for (i = 0 ; i < 6 ; i++)
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if ((mac68k_vrsrc_vec[i] & 0xff) == slot)
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return ((mac68k_vrsrc_vec[i] >> 8) & 0xff);
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return (-1);
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}
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/*
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* Probe a given nubus slot. If a card is there and we can get the
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* format block from it's clutching decl. ROMs, fill the format block
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* and return non-zero. If we can't find a card there with a valid
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* decl. ROM, return 0.
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*
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* First, we check to see if we can access the memory at the tail
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* end of the slot. If so, then we check for a bytelanes byte. We
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* could probably just return a failure status if we bus error on
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* the first try, but there really is little reason not to go ahead
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* and check the other three locations in case there's a wierd card
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* out there.
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*
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* Checking for a card involves locating the "bytelanes" byte which
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* tells us how to interpret the declaration ROM's data. The format
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* block is at the top of the card's standard memory space and the
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* bytelanes byte is at the end of that block.
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*
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* After some inspection of the bytelanes byte, it appears that it
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* takes the form 0xXY where Y is a bitmask of the bytelanes in use
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* and X is a bitmask of the lanes to ignore. Hence, (X ^ Y) == 0
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* and (less obviously), Y will have the upper N bits clear if it is
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* found N bytes from the last possible location. Both that and
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* the exclusive-or check are made.
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*
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* If a valid
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*/
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static u_int8_t nbits[] = {0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4};
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static int
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nubus_probe_slot(bst, bsh, slot, fmt)
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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int slot;
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nubus_slot *fmt;
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{
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u_long ofs, hdr;
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int i, j, found, hdr_size;
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u_int8_t lanes;
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#ifdef DEBUG
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if (nubus_debug & NDB_PROBE)
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printf("probing slot %x\n", slot);
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#endif
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/*
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* The idea behind this glorious work of art is to probe for only
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* valid bytelanes values at appropriate locations (see DC&D p. 159
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* for a list). Note the pattern: the first 8 values are at offset
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* 0xffffff in the slot's space; the next 4 values at 0xfffffe; the
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* next 2 values at 0xfffffd; and the last one at 0xfffffc.
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*
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* The nested loops implement an efficient search of this space,
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* probing first for a valid address, then checking for each of the
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* valid bytelanes values at that address.
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*/
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ofs = NBMEMSIZE;
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lanes = 0xf;
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for (j = 8, found = 0; j > 0 && !found; j >>= 1) {
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ofs--;
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for (i = j; i > 0; i--, lanes--) {
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if (!bus_probe(bst, bsh, ofs, 1)) {
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lanes -= i;
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break;
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}
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if (bus_space_read_1(bst, bsh, ofs) ==
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(((~lanes & 0xf) << 4) | lanes)) {
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found = 1;
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break;
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}
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}
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}
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if (!found) {
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#ifdef DEBUG
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if (nubus_debug & NDB_PROBE)
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printf("bytelanes not found for slot %x\n", slot);
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#endif
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return 0;
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}
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fmt->bytelanes = lanes;
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fmt->step = nbits[(lanes & 0x0f)];
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fmt->slot = slot; /* XXX redundant; get rid of this someday */
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#ifdef DEBUG
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if (nubus_debug & NDB_PROBE)
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printf("bytelanes of 0x%x found for slot 0x%x.\n",
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fmt->bytelanes, slot);
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#endif
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/*
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* Go ahead and attempt to load format header.
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* First, we need to find the first byte beyond memory that
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* would be valid. This is necessary for NUBUS_ROM_offset()
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* to work.
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*/
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hdr = NBMEMSIZE;
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hdr_size = 20;
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i = 0x10 | (lanes & 0x0f);
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while ((i & 1) == 0) {
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hdr++;
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i >>= 1;
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}
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fmt->top = hdr;
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hdr = nubus_adjust_ptr(lanes, hdr, -hdr_size);
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#ifdef DEBUG
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if (nubus_debug & NDB_PROBE)
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printf("fmt->top is 0x%lx, that minus 0x%x puts us at 0x%lx.\n",
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fmt->top, hdr_size, hdr);
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if (nubus_debug & NDB_ARITH)
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for (i = 1 ; i < 8 ; i++)
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printf("0x%lx - 0x%x = 0x%lx, + 0x%x = 0x%lx.\n",
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hdr, i, nubus_adjust_ptr(lanes, hdr, -i),
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i, nubus_adjust_ptr(lanes, hdr, i));
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#endif
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fmt->directory_offset =
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0xff000000 | nubus_read_4(bst, bsh, lanes, hdr);
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hdr = nubus_adjust_ptr(lanes, hdr, 4);
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fmt->length = nubus_read_4(bst, bsh, lanes, hdr);
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hdr = nubus_adjust_ptr(lanes, hdr, 4);
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fmt->crc = nubus_read_4(bst, bsh, lanes, hdr);
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hdr = nubus_adjust_ptr(lanes, hdr, 4);
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fmt->revision_level = nubus_read_1(bst, bsh, lanes, hdr);
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hdr = nubus_adjust_ptr(lanes, hdr, 1);
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fmt->format = nubus_read_1(bst, bsh, lanes, hdr);
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hdr = nubus_adjust_ptr(lanes, hdr, 1);
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fmt->test_pattern = nubus_read_4(bst, bsh, lanes, hdr);
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#ifdef DEBUG
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if (nubus_debug & NDB_PROBE) {
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printf("Directory offset 0x%x\t", fmt->directory_offset);
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printf("Length 0x%x\t", fmt->length);
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printf("CRC 0x%x\n", fmt->crc);
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printf("Revision level 0x%x\t", fmt->revision_level);
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printf("Format 0x%x\t", fmt->format);
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printf("Test Pattern 0x%x\n", fmt->test_pattern);
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}
|
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#endif
|
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|
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if ((fmt->directory_offset & 0x00ff0000) == 0) {
|
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printf("Invalid looking directory offset (0x%x)!\n",
|
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fmt->directory_offset);
|
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return 0;
|
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}
|
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if (fmt->test_pattern != NUBUS_ROM_TEST_PATTERN) {
|
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printf("Nubus--test pattern invalid:\n");
|
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printf(" slot 0x%x, bytelanes 0x%x?\n", fmt->slot, lanes);
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printf(" read test 0x%x, compare with 0x%x.\n",
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fmt->test_pattern, NUBUS_ROM_TEST_PATTERN);
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return 0;
|
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}
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|
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/* Perform CRC */
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if (fmt->crc != nubus_calc_CRC(bst, bsh, fmt)) {
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printf("Nubus--crc check failed, slot 0x%x.\n", fmt->slot);
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return 0;
|
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}
|
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|
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return 1;
|
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}
|
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|
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static u_int32_t
|
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nubus_calc_CRC(bst, bsh, fmt)
|
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bus_space_tag_t bst;
|
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bus_space_handle_t bsh;
|
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nubus_slot *fmt;
|
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{
|
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#if 0
|
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u_long base, ptr, crc_loc;
|
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u_int32_t sum;
|
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u_int8_t lanes = fmt->bytelanes;
|
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|
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base = fmt->top;
|
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crc_loc = NUBUS_ROM_offset(fmt, base, -12);
|
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ptr = NUBUS_ROM_offset(fmt, base, -fmt->length);
|
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|
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sum = 0;
|
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while (ptr < base)
|
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roll #1, sum
|
|
if (ptr == crc_loc) {
|
|
roll #3, sum
|
|
ptr = nubus_adjust_ptr(lanes, ptr, 3);
|
|
} else {
|
|
sum += nubus_read_1(bst, bsh, lanes, ptr);
|
|
}
|
|
ptr = nubus_adjust_ptr(lanes, ptr, 1);
|
|
}
|
|
|
|
return sum;
|
|
#endif
|
|
return fmt->crc;
|
|
}
|
|
|
|
/*
|
|
* Compute byte offset on card, taking into account bytelanes.
|
|
* Base must be on a valid bytelane for this function to work.
|
|
* Return the new address.
|
|
*
|
|
* XXX -- There has GOT to be a better way to do this.
|
|
*/
|
|
static u_long
|
|
nubus_adjust_ptr(lanes, base, amt)
|
|
u_int8_t lanes;
|
|
u_long base;
|
|
long amt;
|
|
{
|
|
u_int8_t b, t;
|
|
|
|
if (!amt)
|
|
return base;
|
|
|
|
if (amt < 0) {
|
|
amt = -amt;
|
|
b = lanes;
|
|
t = (b << 4);
|
|
b <<= (3 - (base & 0x3));
|
|
while (amt) {
|
|
b <<= 1;
|
|
if (b == t)
|
|
b = lanes;
|
|
if (b & 0x08)
|
|
amt--;
|
|
base--;
|
|
}
|
|
return base;
|
|
}
|
|
|
|
t = (lanes & 0xf) | 0x10;
|
|
b = t >> (base & 0x3);
|
|
while (amt) {
|
|
b >>= 1;
|
|
if (b == 1)
|
|
b = t;
|
|
if (b & 1)
|
|
amt--;
|
|
base++;
|
|
}
|
|
|
|
return base;
|
|
}
|
|
|
|
static u_int8_t
|
|
nubus_read_1(bst, bsh, lanes, ofs)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
u_int8_t lanes;
|
|
u_long ofs;
|
|
{
|
|
return bus_space_read_1(bst, bsh, ofs);
|
|
}
|
|
|
|
#ifdef notyet
|
|
/* Nothing uses this, yet */
|
|
static u_int16_t
|
|
nubus_read_2(bst, bsh, lanes, ofs)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
u_int8_t lanes;
|
|
u_long ofs;
|
|
{
|
|
u_int16_t s;
|
|
|
|
s = (nubus_read_1(bst, bsh, lanes, ofs) << 8);
|
|
ofs = nubus_adjust_ptr(lanes, ofs, 1);
|
|
s |= nubus_read_1(bst, bsh, lanes, ofs);
|
|
return s;
|
|
}
|
|
#endif
|
|
|
|
static u_int32_t
|
|
nubus_read_4(bst, bsh, lanes, ofs)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
u_int8_t lanes;
|
|
u_long ofs;
|
|
{
|
|
u_int32_t l;
|
|
int i;
|
|
|
|
l = 0;
|
|
for (i = 0; i < 4; i++) {
|
|
l = (l << 8) | nubus_read_1(bst, bsh, lanes, ofs);
|
|
ofs = nubus_adjust_ptr(lanes, ofs, 1);
|
|
}
|
|
return l;
|
|
}
|
|
|
|
void
|
|
nubus_get_main_dir(fmt, dir_return)
|
|
nubus_slot *fmt;
|
|
nubus_dir *dir_return;
|
|
{
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("nubus_get_main_dir(%p, %p)\n",
|
|
fmt, dir_return);
|
|
#endif
|
|
dir_return->dirbase = nubus_adjust_ptr(fmt->bytelanes, fmt->top,
|
|
fmt->directory_offset - 20);
|
|
dir_return->curr_ent = dir_return->dirbase;
|
|
}
|
|
|
|
void
|
|
nubus_get_dir_from_rsrc(fmt, dirent, dir_return)
|
|
nubus_slot *fmt;
|
|
nubus_dirent *dirent;
|
|
nubus_dir *dir_return;
|
|
{
|
|
u_long loc;
|
|
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("nubus_get_dir_from_rsrc(%p, %p, %p).\n",
|
|
fmt, dirent, dir_return);
|
|
#endif
|
|
if ((loc = dirent->offset) & 0x800000) {
|
|
loc |= 0xff000000;
|
|
}
|
|
dir_return->dirbase =
|
|
nubus_adjust_ptr(fmt->bytelanes, dirent->myloc, loc);
|
|
dir_return->curr_ent = dir_return->dirbase;
|
|
}
|
|
|
|
int
|
|
nubus_find_rsrc(bst, bsh, fmt, dir, rsrcid, dirent_return)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
nubus_slot *fmt;
|
|
nubus_dir *dir;
|
|
u_int8_t rsrcid;
|
|
nubus_dirent *dirent_return;
|
|
{
|
|
u_long entry;
|
|
u_int8_t byte, lanes = fmt->bytelanes;
|
|
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("nubus_find_rsrc(%p, %p, 0x%x, %p)\n",
|
|
fmt, dir, rsrcid, dirent_return);
|
|
#endif
|
|
if (fmt->test_pattern != NUBUS_ROM_TEST_PATTERN)
|
|
return -1;
|
|
|
|
entry = dir->curr_ent;
|
|
do {
|
|
byte = nubus_read_1(bst, bsh, lanes, entry);
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("\tFound rsrc 0x%x.\n", byte);
|
|
#endif
|
|
if (byte == rsrcid) {
|
|
dirent_return->myloc = entry;
|
|
dirent_return->rsrc_id = rsrcid;
|
|
entry = nubus_read_4(bst, bsh, lanes, entry);
|
|
dirent_return->offset = (entry & 0x00ffffff);
|
|
return 1;
|
|
}
|
|
if (byte == 0xff) {
|
|
entry = dir->dirbase;
|
|
} else {
|
|
entry = nubus_adjust_ptr(lanes, entry, 4);
|
|
}
|
|
} while (entry != (u_long)dir->curr_ent);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nubus_get_ind_data(bst, bsh, fmt, dirent, data_return, nbytes)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
nubus_slot *fmt;
|
|
nubus_dirent *dirent;
|
|
caddr_t data_return;
|
|
int nbytes;
|
|
{
|
|
u_long loc;
|
|
u_int8_t lanes = fmt->bytelanes;
|
|
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("nubus_get_ind_data(%p, %p, %p, %d).\n",
|
|
fmt, dirent, data_return, nbytes);
|
|
#endif
|
|
if ((loc = dirent->offset) & 0x800000) {
|
|
loc |= 0xff000000;
|
|
}
|
|
loc = nubus_adjust_ptr(lanes, dirent->myloc, loc);
|
|
|
|
while (nbytes--) {
|
|
*data_return++ = nubus_read_1(bst, bsh, lanes, loc);
|
|
loc = nubus_adjust_ptr(lanes, loc, 1);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
nubus_get_c_string(bst, bsh, fmt, dirent, data_return, max_bytes)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
nubus_slot *fmt;
|
|
nubus_dirent *dirent;
|
|
caddr_t data_return;
|
|
int max_bytes;
|
|
{
|
|
u_long loc;
|
|
u_int8_t lanes = fmt->bytelanes;
|
|
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("nubus_get_c_string(%p, %p, %p, %d).\n",
|
|
fmt, dirent, data_return, max_bytes);
|
|
#endif
|
|
if ((loc = dirent->offset) & 0x800000)
|
|
loc |= 0xff000000;
|
|
|
|
loc = nubus_adjust_ptr(lanes, dirent->myloc, loc);
|
|
|
|
*data_return = '\0';
|
|
while (max_bytes--) {
|
|
if ((*data_return++ =
|
|
nubus_read_1(bst, bsh, lanes, loc)) == 0)
|
|
return 1;
|
|
loc = nubus_adjust_ptr(lanes, loc, 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static char *huh = "???";
|
|
|
|
char *
|
|
nubus_get_vendor(bst, bsh, fmt, rsrc)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
nubus_slot *fmt;
|
|
int rsrc;
|
|
{
|
|
static char str_ret[64];
|
|
nubus_dir dir;
|
|
nubus_dirent ent;
|
|
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("nubus_get_vendor(%p, 0x%x).\n", fmt, rsrc);
|
|
#endif
|
|
nubus_get_main_dir(fmt, &dir);
|
|
if (nubus_find_rsrc(bst, bsh, fmt, &dir, 1, &ent) <= 0)
|
|
return huh;
|
|
nubus_get_dir_from_rsrc(fmt, &ent, &dir);
|
|
|
|
if (nubus_find_rsrc(bst, bsh, fmt, &dir, NUBUS_RSRC_VENDORINFO, &ent)
|
|
<= 0)
|
|
return huh;
|
|
nubus_get_dir_from_rsrc(fmt, &ent, &dir);
|
|
|
|
if (nubus_find_rsrc(bst, bsh, fmt, &dir, rsrc, &ent) <= 0)
|
|
return huh;
|
|
|
|
nubus_get_c_string(bst, bsh, fmt, &ent, str_ret, 64);
|
|
|
|
return str_ret;
|
|
}
|
|
|
|
char *
|
|
nubus_get_card_name(bst, bsh, fmt)
|
|
bus_space_tag_t bst;
|
|
bus_space_handle_t bsh;
|
|
nubus_slot *fmt;
|
|
{
|
|
static char name_ret[64];
|
|
nubus_dir dir;
|
|
nubus_dirent ent;
|
|
|
|
#ifdef DEBUG
|
|
if (nubus_debug & NDB_FOLLOW)
|
|
printf("nubus_get_card_name(%p).\n", fmt);
|
|
#endif
|
|
nubus_get_main_dir(fmt, &dir);
|
|
|
|
if (nubus_find_rsrc(bst, bsh, fmt, &dir, 1, &ent) <= 0)
|
|
return huh;
|
|
|
|
nubus_get_dir_from_rsrc(fmt, &ent, &dir);
|
|
|
|
if (nubus_find_rsrc(bst, bsh, fmt, &dir, NUBUS_RSRC_NAME, &ent) <= 0)
|
|
return huh;
|
|
|
|
nubus_get_c_string(bst, bsh, fmt, &ent, name_ret, 64);
|
|
|
|
return name_ret;
|
|
}
|