170 lines
5.1 KiB
C
170 lines
5.1 KiB
C
/* $NetBSD: sacc_hpcarm.c,v 1.12 2011/07/19 15:37:38 dyoung Exp $ */
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/*-
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* Copyright (c) 2001 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 IWAMOTO Toshihiro.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Platform dependent part for SA-11[01]1 companion chip on hpcarm.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: sacc_hpcarm.c,v 1.12 2011/07/19 15:37:38 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/uio.h>
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#include <sys/bus.h>
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#include <machine/platid.h>
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#include <machine/platid_mask.h>
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#include <arm/sa11x0/sa11x0_reg.h>
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#include <arm/sa11x0/sa11x0_var.h>
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#include <arm/sa11x0/sa11x0_gpioreg.h>
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#include <arm/sa11x0/sa1111_reg.h>
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#include <arm/sa11x0/sa1111_var.h>
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static void sacc_attach(device_t, device_t, void *);
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static int sacc_intr(void *);
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struct platid_data sacc_platid_table[] = {
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{ &platid_mask_MACH_HP_JORNADA_7XX, (void *)1 },
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{ NULL, NULL }
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};
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CFATTACH_DECL_NEW(sacc, sizeof(struct sacc_softc),
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sacc_probe, sacc_attach, NULL, NULL);
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#ifdef INTR_DEBUG
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#define DPRINTF(arg) aprint_normal arg
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#else
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#define DPRINTF(arg)
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#endif
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static void
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sacc_attach(device_t parent, device_t self, void *aux)
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{
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int i, gpiopin;
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uint32_t skid;
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struct sacc_softc *sc = device_private(self);
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struct sa11x0_softc *psc = device_private(parent);
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struct sa11x0_attach_args *sa = aux;
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struct platid_data *p;
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aprint_normal("\n");
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sc->sc_dev = self;
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sc->sc_iot = sa->sa_iot;
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sc->sc_piot = psc->sc_iot;
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sc->sc_gpioh = psc->sc_gpioh;
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p = platid_search_data(&platid, sacc_platid_table);
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if (p == NULL)
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return;
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gpiopin = (int)p->data;
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sc->sc_gpiomask = 1 << gpiopin;
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if (bus_space_map(sa->sa_iot, sa->sa_addr, sa->sa_size, 0,
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&sc->sc_ioh)) {
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aprint_normal_dev(self, "unable to map registers\n");
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return;
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}
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skid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCSBI_SKID);
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aprint_normal_dev(self, "SA-1111 rev %d.%d\n",
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(skid & 0xf0) >> 4, skid & 0xf);
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for (i = 0; i < SACCIC_LEN; i++)
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sc->sc_intrhand[i] = NULL;
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/* initialize SA-1111 interrupt controller */
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN0, 0);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTEN1, 0);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTTSTSEL, 0);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh,
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SACCIC_INTSTATCLR0, 0xffffffff);
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bus_space_write_4(sc->sc_iot, sc->sc_ioh,
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SACCIC_INTSTATCLR1, 0xffffffff);
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/* connect to SA-1110's GPIO intr */
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sa11x0_intr_establish(0, gpiopin, 1, IPL_SERIAL, sacc_intr, sc);
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/* attach each devices */
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config_search_ia(sa1111_search, self, "sacc", NULL);
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}
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static int
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sacc_intr(void *arg)
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{
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int i;
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uint32_t mask;
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struct sacc_intrvec intstat;
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struct sacc_softc *sc = arg;
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struct sacc_intrhand *ih;
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intstat.lo =
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bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTSTATCLR0);
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intstat.hi =
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bus_space_read_4(sc->sc_iot, sc->sc_ioh, SACCIC_INTSTATCLR1);
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DPRINTF(("sacc_intr: %x %x\n", intstat.lo, intstat.hi));
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/* clear SA-1110's GPIO intr status */
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bus_space_write_4(sc->sc_piot, sc->sc_gpioh,
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SAGPIO_EDR, sc->sc_gpiomask);
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for (i = 0, mask = 1; i < 32; i++, mask <<= 1)
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if (intstat.lo & mask) {
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/*
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* Clear intr status before calling intr handlers.
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* This cause stray interrupts, but clearing
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* after calling intr handlers cause intr lossage.
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*/
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bus_space_write_4(sc->sc_iot, sc->sc_ioh,
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SACCIC_INTSTATCLR0, 1 << i);
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for (ih = sc->sc_intrhand[i]; ih; ih = ih->ih_next)
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softint_schedule(ih->ih_soft);
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}
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for (i = 0, mask = 1; i < SACCIC_LEN - 32; i++, mask <<= 1)
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if (intstat.hi & mask) {
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bus_space_write_4(sc->sc_iot, sc->sc_ioh,
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SACCIC_INTSTATCLR1, 1 << i);
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for (ih = sc->sc_intrhand[i + 32]; ih; ih = ih->ih_next)
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softint_schedule(ih->ih_soft);
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}
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return 1;
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}
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