1a5a7fe7b7
attached to "obio") on the IQ80310 and IQ80321. It makes more sense to do it this way for this type of system (the goal being to encapsulate as much information about the board as possible into one file).
157 lines
4.4 KiB
C
157 lines
4.4 KiB
C
/* $NetBSD: obio.c,v 1.11 2002/10/03 20:14:58 thorpej Exp $ */
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/*
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* Copyright (c) 2001, 2002 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* 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 WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* On-board device autoconfiguration support for Intel IQ80310
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* evaluation boards.
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*
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* The "obio" device node handles all of the CPLD functions,
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* as well ... timer, interrupts, etc.
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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 <machine/autoconf.h>
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#include <machine/bus.h>
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#include <evbarm/iq80310/iq80310reg.h>
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#include <evbarm/iq80310/iq80310var.h>
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#include <evbarm/iq80310/obiovar.h>
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#include "locators.h"
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int obio_match(struct device *, struct cfdata *, void *);
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void obio_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(obio, sizeof(struct device),
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obio_match, obio_attach, NULL, NULL);
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int obio_print(void *, const char *);
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int obio_search(struct device *, struct cfdata *, void *);
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/* there can be only one */
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int obio_found;
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int
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obio_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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#if 0
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struct mainbus_attach_args *ma = aux;
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#endif
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if (obio_found)
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return (0);
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#if 1
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/* XXX Shoot arch/arm/mainbus in the head. */
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return (1);
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#else
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if (strcmp(cf->cf_name, ma->ma_name) == 0)
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return (1);
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return (0);
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#endif
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}
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void
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obio_attach(struct device *parent, struct device *self, void *aux)
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{
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obio_found = 1;
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#if defined(IOP310_TEAMASA_NPWR)
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/*
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* These boards don't have revision/backplane detect registers.
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* Just ignore it.
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*/
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printf("\n");
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#else /* Default to stock IQ80310 */
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{
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/*
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* Yes, we're using knowledge of the obio bus space internals,
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* here.
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*/
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uint8_t board_rev = CPLD_READ(IQ80310_BOARD_REV);
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uint8_t cpld_rev = CPLD_READ(IQ80310_CPLD_REV);
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uint8_t backplane = CPLD_READ(IQ80310_BACKPLANE_DET);
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printf(": board rev. %c, CPLD rev. %c, backplane %spresent\n",
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BOARD_REV(board_rev), CPLD_REV(cpld_rev),
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(backplane & 1) ? "" : "not ");
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}
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#endif /* list of IQ80310-based designs */
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/*
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* Attach all the on-board devices as described in the kernel
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* configuration file.
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*/
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config_search(obio_search, self, NULL);
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}
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int
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obio_print(void *aux, const char *pnp)
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{
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struct obio_attach_args *oba = aux;
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printf(" addr 0x%08lx", oba->oba_addr);
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if (oba->oba_irq != -1)
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printf(" xint3 %d", IRQ_XINT3(oba->oba_irq));
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return (UNCONF);
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}
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int
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obio_search(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct obio_attach_args oba;
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oba.oba_st = &obio_bs_tag;
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oba.oba_addr = cf->cf_loc[OBIOCF_ADDR];
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if (cf->cf_loc[OBIOCF_XINT3] != OBIOCF_XINT3_DEFAULT)
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oba.oba_irq = XINT3_IRQ(cf->cf_loc[OBIOCF_XINT3]);
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else
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oba.oba_irq = -1;
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if (config_match(parent, cf, &oba) > 0)
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config_attach(parent, cf, &oba, obio_print);
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return (0);
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}
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