136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/* $NetBSD: wdc_obio.c,v 1.9 2012/07/31 15:50:32 bouyer Exp $ */
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/*-
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* Copyright (c) 1998, 2003, 2005 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 Charles M. Hannum and by Onno van der Linden.
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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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wdc_obio.c,v 1.9 2012/07/31 15:50:32 bouyer Exp $");
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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/malloc.h>
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#include <sys/bus.h>
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#include <machine/intr.h>
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#include <arm/xscale/i80321var.h>
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#include <evbarm/iq80321/iq80321reg.h>
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#include <evbarm/iq80321/obiovar.h>
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#include <evbarm/iq31244/iq31244reg.h>
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#include <dev/ic/wdcreg.h>
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#include <dev/ata/atavar.h>
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#include <dev/ic/wdcvar.h>
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struct wdc_obio_softc {
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struct wdc_softc sc_wdcdev;
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struct ata_channel *wdc_chanlist[1];
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struct ata_channel ata_channel;
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struct ata_queue wdc_chqueue;
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struct wdc_regs wdc_regs;
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void *sc_ih;
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};
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static int wdc_obio_probe(device_t, cfdata_t, void *);
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static void wdc_obio_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(wdc_obio, sizeof(struct wdc_obio_softc),
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wdc_obio_probe, wdc_obio_attach, NULL, NULL);
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static int
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wdc_obio_probe(device_t parent, cfdata_t match, void *aux)
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{
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return 1;
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}
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static void
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wdc_obio_attach(device_t parent, device_t self, void *aux)
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{
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struct wdc_obio_softc *sc = device_private(self);
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struct wdc_regs *wdr;
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struct obio_attach_args *oba = aux;
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int i;
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sc->sc_wdcdev.sc_atac.atac_dev = self;
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sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
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wdr->cmd_iot = oba->oba_st;
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wdr->ctl_iot = oba->oba_st;
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if (bus_space_map(wdr->cmd_iot, oba->oba_addr, IQ31244_CFLASH_SIZE,
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0, &wdr->cmd_baseioh)) {
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aprint_error(": couldn't map registers\n");
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return;
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}
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for (i = 0; i < 8; i++) {
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if (bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
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IQ31244_CFLASH_CMD_BASE + i, 1, &wdr->cmd_iohs[i]) != 0) {
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aprint_error(": couldn't subregion registers\n");
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return;
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}
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}
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if (bus_space_subregion(wdr->ctl_iot, wdr->cmd_baseioh,
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IQ31244_CFLASH_CTL_BASE, 1, &wdr->ctl_ioh) != 0) {
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aprint_error(": couldn't subregion registers\n");
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return;
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}
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sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
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sc->sc_wdcdev.sc_atac.atac_pio_cap = 0;
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sc->wdc_chanlist[0] = &sc->ata_channel;
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sc->sc_wdcdev.sc_atac.atac_channels = sc->wdc_chanlist;
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sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
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sc->sc_wdcdev.wdc_maxdrives = 2;
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sc->ata_channel.ch_channel = 0;
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sc->ata_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
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sc->ata_channel.ch_queue = &sc->wdc_chqueue;
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wdc_init_shadow_regs(&sc->ata_channel);
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aprint_normal("\n");
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/*
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* The interrupt line is controlled by a jumper. We can't detect
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* this, except by allowing a request to time out, so assume that
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* if the config file hasn't specified the IRQ, then the jumper isn't
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* fitted.
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*/
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if (oba->oba_irq != -1)
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sc->sc_ih = i80321_intr_establish(oba->oba_irq, IPL_BIO,
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wdcintr, &sc->ata_channel);
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else {
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sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NOIRQ;
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aprint_normal_dev(self, "Using polled I/O\n");
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}
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wdcattach(&sc->ata_channel);
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}
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