528 lines
15 KiB
C
528 lines
15 KiB
C
/* $NetBSD: frodo.c,v 1.27 2007/03/04 05:59:47 christos Exp $ */
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/*-
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* Copyright (c) 1997, 1998, 1999 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 Jason R. Thorpe.
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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/*
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* Copyright (c) 1997 Michael Smith. 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR 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, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Support for the "Frodo" (a.k.a. "Apollo Utility") chip found
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* in HP Apollo 9000/4xx workstations, as well as
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* HP 9000/362 and 9000/382 controllers.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.27 2007/03/04 05:59:47 christos Exp $");
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#define _HP300_INTR_H_PRIVATE
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include <machine/hp300spu.h>
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#include <hp300/dev/intiovar.h>
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#include <hp300/dev/frodoreg.h>
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#include <hp300/dev/frodovar.h>
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/*
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* Description of a Frodo interrupt handler.
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*/
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struct frodo_interhand {
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int (*ih_fn)(void *);
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void *ih_arg;
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int ih_priority;
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};
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struct frodo_softc {
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struct device sc_dev; /* generic device glue */
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volatile uint8_t *sc_regs; /* register base */
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struct frodo_interhand sc_intr[FRODO_NINTR]; /* interrupt handlers */
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int sc_ipl;
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void *sc_ih; /* out interrupt cookie */
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int sc_refcnt; /* number of interrupt refs */
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struct bus_space_tag sc_tag; /* bus space tag */
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};
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static int frodomatch(struct device *, struct cfdata *, void *);
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static void frodoattach(struct device *, struct device *, void *);
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static int frodoprint(void *, const char *);
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static int frodosubmatch(struct device *, struct cfdata *, const int *, void *);
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static int frodointr(void *);
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static void frodo_imask(struct frodo_softc *, uint16_t, uint16_t);
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CFATTACH_DECL(frodo, sizeof(struct frodo_softc),
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frodomatch, frodoattach, NULL, NULL);
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static const struct frodo_device frodo_subdevs[] = {
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{ "dnkbd", FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 },
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{ "com", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 },
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{ "com", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 },
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{ "com", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 },
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{ NULL, 0, 0 }
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};
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static int
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frodomatch(struct device *parent, struct cfdata *match, void *aux)
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{
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struct intio_attach_args *ia = aux;
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static int frodo_matched = 0;
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/* only allow one instance */
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if (frodo_matched)
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return 0;
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if (strcmp(ia->ia_modname, "frodo") != 0)
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return 0;
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if (badaddr((void *)ia->ia_addr))
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return 0;
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frodo_matched = 1;
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return 1;
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}
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static void
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frodoattach(struct device *parent, struct device *self, void *aux)
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{
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struct frodo_softc *sc = (struct frodo_softc *)self;
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struct intio_attach_args *ia = aux;
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bus_space_tag_t bst = &sc->sc_tag;
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const struct frodo_device *fd;
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struct frodo_attach_args fa;
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sc->sc_regs = (volatile uint8_t *)ia->ia_addr;
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sc->sc_ipl = ia->ia_ipl;
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if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0)
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printf(": service mode enabled");
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printf("\n");
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/* Initialize bus_space_tag_t for frodo */
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frodo_init_bus_space(bst);
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/* Clear all of the interrupt handlers. */
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memset(sc->sc_intr, 0, sizeof(sc->sc_intr));
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sc->sc_refcnt = 0;
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/*
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* Disable all of the interrupt lines; we reenable them
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* as subdevices attach.
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*/
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frodo_imask(sc, 0, 0xffff);
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/* Clear any pending interrupts. */
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FRODO_WRITE(sc, FRODO_PIC_PU, 0xff);
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FRODO_WRITE(sc, FRODO_PIC_PL, 0xff);
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/* Set interrupt polarities. */
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FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10);
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/* ...and configure for edge triggering. */
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FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf);
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/*
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* We defer hooking up our interrupt handler until
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* a subdevice hooks up theirs.
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*/
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sc->sc_ih = NULL;
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/* ... and attach subdevices. */
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for (fd = frodo_subdevs; fd->fd_name != NULL; fd++) {
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/*
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* Skip the first serial port if we're not a 425e;
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* it's mapped to the DCA at select code 9 on all
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* other models.
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*/
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if (fd->fd_offset == FRODO_APCI_OFFSET(1) &&
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mmuid != MMUID_425_E)
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continue;
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fa.fa_name = fd->fd_name;
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fa.fa_bst = bst;
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fa.fa_base = ia->ia_iobase;
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fa.fa_offset = fd->fd_offset;
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fa.fa_line = fd->fd_line;
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config_found_sm_loc(self, "frodo", NULL, &fa, frodoprint,
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frodosubmatch);
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}
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}
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static int
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frodosubmatch(struct device *parent, struct cfdata *cf,
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const int *ldesc, void *aux)
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{
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struct frodo_attach_args *fa = aux;
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if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET &&
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cf->frodocf_offset != fa->fa_offset)
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return 0;
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return config_match(parent, cf, aux);
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}
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static int
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frodoprint(void *aux, const char *pnp)
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{
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struct frodo_attach_args *fa = aux;
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if (pnp)
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aprint_normal("%s at %s", fa->fa_name, pnp);
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aprint_normal(" offset 0x%x", fa->fa_offset);
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return UNCONF;
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}
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void
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frodo_intr_establish(struct device *frdev, int (*func)(void *), void *arg,
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int line, int priority)
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{
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struct frodo_softc *sc = (struct frodo_softc *)frdev;
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struct hp300_intrhand *ih = sc->sc_ih;
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if (line < 0 || line >= FRODO_NINTR) {
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printf("%s: bad interrupt line %d\n",
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sc->sc_dev.dv_xname, line);
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goto lose;
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}
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if (sc->sc_intr[line].ih_fn != NULL) {
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printf("%s: interrupt line %d already used\n",
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sc->sc_dev.dv_xname, line);
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goto lose;
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}
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/* Install the handler. */
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sc->sc_intr[line].ih_fn = func;
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sc->sc_intr[line].ih_arg = arg;
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sc->sc_intr[line].ih_priority = priority;
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/*
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* If this is the first one, establish the frodo
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* interrupt handler. If not, reestablish at a
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* higher priority if necessary.
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*/
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if (ih == NULL || ih->ih_priority < priority) {
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if (ih != NULL)
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intr_disestablish(ih);
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sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, priority);
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}
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sc->sc_refcnt++;
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/* Enable the interrupt line. */
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frodo_imask(sc, (1 << line), 0);
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return;
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lose:
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panic("frodo_intr_establish");
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}
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void
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frodo_intr_disestablish(struct device *frdev, int line)
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{
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struct frodo_softc *sc = (struct frodo_softc *)frdev;
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struct hp300_intrhand *ih = sc->sc_ih;
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int newpri;
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if (sc->sc_intr[line].ih_fn == NULL) {
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printf("%s: no handler for line %d\n",
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sc->sc_dev.dv_xname, line);
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panic("frodo_intr_disestablish");
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}
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sc->sc_intr[line].ih_fn = NULL;
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frodo_imask(sc, 0, (1 << line));
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/* If this was the last, unhook ourselves. */
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if (sc->sc_refcnt-- == 1) {
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intr_disestablish(ih);
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return;
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}
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/* Lower our priority, if appropriate. */
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for (newpri = 0, line = 0; line < FRODO_NINTR; line++)
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if (sc->sc_intr[line].ih_fn != NULL &&
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sc->sc_intr[line].ih_priority > newpri)
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newpri = sc->sc_intr[line].ih_priority;
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if (newpri != ih->ih_priority) {
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intr_disestablish(ih);
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sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri);
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}
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}
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static int
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frodointr(void *arg)
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{
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struct frodo_softc *sc = arg;
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struct frodo_interhand *fih;
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int line, taken = 0;
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/* Any interrupts pending? */
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if (FRODO_GETPEND(sc) == 0)
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return 0;
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do {
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/*
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* Get pending interrupt; this also clears it for us.
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*/
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line = FRODO_IPEND(sc);
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fih = &sc->sc_intr[line];
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if (fih->ih_fn == NULL ||
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(*fih->ih_fn)(fih->ih_arg) == 0)
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printf("%s: spurious interrupt on line %d\n",
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sc->sc_dev.dv_xname, line);
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if (taken++ > 100)
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panic("frodointr: looping!");
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} while (FRODO_GETPEND(sc) != 0);
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return 1;
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}
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static void
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frodo_imask(struct frodo_softc *sc, uint16_t set, uint16_t clear)
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{
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uint16_t imask;
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imask = FRODO_GETMASK(sc);
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imask |= set;
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imask &= ~clear;
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FRODO_SETMASK(sc, imask);
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}
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/*
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* frodo chip specific bus_space(9) support functions.
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*/
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static uint8_t frodo_bus_space_read_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t);
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static void frodo_bus_space_write_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t, uint8_t);
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static void frodo_bus_space_read_multi_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t);
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static void frodo_bus_space_write_multi_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t);
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static void frodo_bus_space_read_region_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t);
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static void frodo_bus_space_write_region_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t);
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static void frodo_bus_space_set_multi_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t, uint8_t, bus_size_t);
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static void frodo_bus_space_set_region_sparse_1(bus_space_tag_t,
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bus_space_handle_t, bus_size_t, uint8_t, bus_size_t);
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/*
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* frodo_init_bus_space():
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* Initialize bus_space functions in bus_space_tag_t
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* for frodo devices which have sparse address space.
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*/
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void
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frodo_init_bus_space(bus_space_tag_t bst)
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{
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memset(bst, 0, sizeof(struct bus_space_tag));
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bst->bustype = HP300_BUS_SPACE_INTIO;
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bst->bsr1 = frodo_bus_space_read_sparse_1;
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bst->bsw1 = frodo_bus_space_write_sparse_1;
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bst->bsrm1 = frodo_bus_space_read_multi_sparse_1;
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bst->bswm1 = frodo_bus_space_write_multi_sparse_1;
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bst->bsrr1 = frodo_bus_space_read_region_sparse_1;
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bst->bswr1 = frodo_bus_space_write_region_sparse_1;
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bst->bssm1 = frodo_bus_space_set_multi_sparse_1;
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bst->bssr1 = frodo_bus_space_set_region_sparse_1;
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}
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static uint8_t
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frodo_bus_space_read_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh,
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bus_size_t offset)
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{
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return *(volatile uint8_t *)(bsh + (offset << 2));
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}
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static void
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frodo_bus_space_write_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh,
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bus_size_t offset, uint8_t val)
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{
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*(volatile uint8_t *)(bsh + (offset << 2)) = val;
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}
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static void
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frodo_bus_space_read_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh,
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bus_size_t offset, uint8_t *addr, bus_size_t len)
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{
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__asm volatile (
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" movl %0,%%a0 ;\n"
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" movl %1,%%a1 ;\n"
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" movl %2,%%d0 ;\n"
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"1: movb %%a0@,%%a1@+ ;\n"
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" subql #1,%%d0 ;\n"
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" jne 1b"
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:
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: "r" (bsh + (offset << 2)), "g" (addr), "g" (len)
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: "%a0","%a1","%d0");
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}
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static void
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frodo_bus_space_write_multi_sparse_1(bus_space_tag_t bst,
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bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr,
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bus_size_t len)
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{
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__asm volatile (
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" movl %0,%%a0 ;\n"
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" movl %1,%%a1 ;\n"
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" movl %2,%%d0 ;\n"
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"1: movb %%a1@+,%%a0@ ;\n"
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" subql #1,%%d0 ;\n"
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" jne 1b"
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:
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: "r" (bsh + (offset << 2)), "g" (addr), "g" (len)
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: "%a0","%a1","%d0");
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}
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static void
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frodo_bus_space_read_region_sparse_1(bus_space_tag_t bst,
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bus_space_handle_t bsh, bus_size_t offset, uint8_t *addr, bus_size_t len)
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{
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__asm volatile (
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" movl %0,%%a0 ;\n"
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" movl %1,%%a1 ;\n"
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" movl %2,%%d0 ;\n"
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"1: movb %%a0@,%%a1@+ ;\n"
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" addql #4,%%a0 ;\n"
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" subql #1,%%d0 ;\n"
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" jne 1b"
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:
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: "r" (bsh + (offset << 2)), "g" (addr), "g" (len)
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: "%a0","%a1","%d0");
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}
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static void
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frodo_bus_space_write_region_sparse_1(bus_space_tag_t bst,
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bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr,
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|
bus_size_t len)
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|
{
|
|
|
|
__asm volatile (
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|
" movl %0,%%a0 ;\n"
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|
" movl %1,%%a1 ;\n"
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|
" movl %2,%%d0 ;\n"
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|
"1: movb %%a1@+,%%a0@ ;\n"
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|
" addql #4,%%a0 ;\n"
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|
" subql #1,%%d0 ;\n"
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|
" jne 1b"
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|
:
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|
: "r" (bsh + (offset << 2)), "g" (addr), "g" (len)
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|
: "%a0","%a1","%d0");
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|
}
|
|
|
|
static void
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|
frodo_bus_space_set_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh,
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|
bus_size_t offset, uint8_t val, bus_size_t count)
|
|
{
|
|
__asm volatile (
|
|
" movl %0,%%a0 ;\n"
|
|
" movl %1,%%d1 ;\n"
|
|
" movl %2,%%d0 ;\n"
|
|
"1: movb %%d1,%%a0@ ;\n"
|
|
" subql #1,%%d0 ;\n"
|
|
" jne 1b"
|
|
:
|
|
: "r" (bsh + (offset << 2)), "g" (val), "g" (count)
|
|
: "%a0","%d0","%d1");
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|
}
|
|
|
|
static void
|
|
frodo_bus_space_set_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh,
|
|
bus_size_t offset, uint8_t val, bus_size_t count)
|
|
{
|
|
|
|
__asm volatile (
|
|
" movl %0,%%a0 ;\n"
|
|
" movl %1,%%d1 ;\n"
|
|
" movl %2,%%d0 ;\n"
|
|
"1: movb %%d1,%%a0@ ;\n"
|
|
" addql #4,%%a0 ;\n"
|
|
" subql #1,%%d0 ;\n"
|
|
" jne 1b"
|
|
:
|
|
: "r" (bsh + (offset << 2)), "g" (val), "g" (count)
|
|
: "%a0","%d0","%d1");
|
|
}
|