d8300310a1
proper bus_space accesses and some abstraction layer. All drivers that utilised Gayle also had to be refactored. I tried not to break anything more, but this clearly needs more testing...
227 lines
6.2 KiB
C
227 lines
6.2 KiB
C
/* $NetBSD: wdc_acafh.c,v 1.3 2014/01/03 00:33:06 rkujawa Exp $ */
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/*-
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* Copyright (c) 2000, 2003, 2013 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 Radoslaw Kujawa.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Michael L. Hitch.
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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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* ACA500 CF (IDE) controller driver.
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*
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* The hardware emulates original A600/A1200 Gayle interface. However, it has
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* two channels, second channel placed instead of ctl registers (so software
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* reset of the bus is not possible, duh). There are no slave devices.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wdc_acafh.c,v 1.3 2014/01/03 00:33:06 rkujawa Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include <sys/bswap.h>
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#include <amiga/amiga/cia.h>
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#include <amiga/amiga/custom.h>
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#include <amiga/amiga/device.h>
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#include <amiga/amiga/gayle.h>
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#include <amiga/dev/zbusvar.h>
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#include <amiga/dev/acafhvar.h>
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#include <amiga/dev/acafhreg.h>
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#include <dev/ata/atavar.h>
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#include <dev/ic/wdcvar.h>
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#define WDC_ACAFH_SLOTS 2
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struct wdc_acafh_slot {
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struct ata_channel channel;
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struct ata_queue chqueue;
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struct wdc_regs wdr;
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};
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struct wdc_acafh_softc {
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device_t sc_dev;
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struct wdc_softc sc_wdcdev;
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struct ata_channel *sc_chanlist[WDC_ACAFH_SLOTS];
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struct wdc_acafh_slot sc_slots[WDC_ACAFH_SLOTS];
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struct isr sc_isr;
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struct bus_space_tag cmd_iot;
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struct acafh_softc *aca_sc;
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};
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int wdc_acafh_match(device_t, cfdata_t, void *);
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void wdc_acafh_attach(device_t, device_t, void *);
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int wdc_acafh_intr(void *);
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static void wdc_acafh_attach_channel(struct wdc_acafh_softc *, int);
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static void wdc_acafh_map_channel(struct wdc_acafh_softc *, int);
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CFATTACH_DECL_NEW(wdc_acafh, sizeof(struct wdc_acafh_softc),
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wdc_acafh_match, wdc_acafh_attach, NULL, NULL);
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int
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wdc_acafh_match(device_t parent, cfdata_t cfp, void *aux)
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{
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struct acafhbus_attach_args *aap = aux;
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if (strcmp(aap->aaa_name, "wdc_acafh") != 0)
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return(0);
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return 1;
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}
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void
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wdc_acafh_attach(device_t parent, device_t self, void *aux)
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{
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struct wdc_acafh_softc *sc = device_private(self);
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int i;
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aprint_normal(": ACA500 CompactFlash interface\n");
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sc->sc_dev = device_private(self);
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sc->aca_sc = device_private(parent);
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gayle_init();
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/* XXX: take addr from attach args? */
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sc->cmd_iot.base = (u_long) ztwomap(GAYLE_IDE_BASE + 2);
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sc->cmd_iot.absm = &amiga_bus_stride_4swap;
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sc->sc_wdcdev.sc_atac.atac_dev = self;
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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->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist;
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sc->sc_wdcdev.sc_atac.atac_nchannels = WDC_ACAFH_SLOTS;
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sc->sc_wdcdev.wdc_maxdrives = 2;
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sc->sc_wdcdev.cap = WDC_CAPABILITY_NO_AUXCTL;
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wdc_allocate_regs(&sc->sc_wdcdev);
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for (i = 0; i < WDC_ACAFH_SLOTS; i++) {
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wdc_acafh_attach_channel(sc, i);
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}
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sc->sc_isr.isr_intr = wdc_acafh_intr;
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sc->sc_isr.isr_arg = sc;
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sc->sc_isr.isr_ipl = 2;
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add_isr (&sc->sc_isr);
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gayle_intr_enable_set(GAYLE_INT_IDE);
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}
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void
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wdc_acafh_attach_channel(struct wdc_acafh_softc *sc, int chnum)
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{
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sc->sc_chanlist[chnum] = &sc->sc_slots[chnum].channel;
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memset(&sc->sc_slots[chnum],0,sizeof(struct wdc_acafh_slot));
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sc->sc_slots[chnum].channel.ch_channel = chnum;
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sc->sc_slots[chnum].channel.ch_atac = &sc->sc_wdcdev.sc_atac;
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sc->sc_slots[chnum].channel.ch_queue = &sc->sc_slots[chnum].chqueue;
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wdc_acafh_map_channel(sc, chnum);
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wdc_init_shadow_regs(&sc->sc_slots[chnum].channel);
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wdcattach(&sc->sc_slots[chnum].channel);
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#ifdef WDC_ACAFH_DEBUG
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aprint_normal_dev(sc->sc_dev, "done init for channel %d\n", chnum);
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#endif /* WDC_ACAFH_DEBUG */
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}
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void
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wdc_acafh_map_channel(struct wdc_acafh_softc *sc, int chnum)
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{
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struct wdc_regs *wdr;
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int i;
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bus_addr_t off;
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wdr = CHAN_TO_WDC_REGS(&sc->sc_slots[chnum].channel);
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wdr->cmd_iot = &sc->cmd_iot;
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if (chnum == 0)
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off = 0;
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else
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off = 0x400;
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if (bus_space_map(wdr->cmd_iot, off, 0x40, 0,
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&wdr->cmd_baseioh)) {
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aprint_error_dev(sc->sc_dev, "couldn't map regs\n");
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return;
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}
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for (i = 0; i < WDC_NREG; i++) {
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if (bus_space_subregion(wdr->cmd_iot,
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wdr->cmd_baseioh, i, i == 0 ? 4 : 1,
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&wdr->cmd_iohs[i]) != 0) {
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bus_space_unmap(wdr->cmd_iot,
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wdr->cmd_baseioh, 0x40);
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aprint_error_dev(sc->sc_dev, "couldn't map regs\n");
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return;
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}
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}
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}
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int
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wdc_acafh_intr(void *arg)
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{
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struct wdc_acafh_softc *sc;
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uint8_t intreq;
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int ret;
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sc = (struct wdc_acafh_softc *) arg;
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intreq = gayle_intr_status();
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ret = 0;
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if (intreq & GAYLE_INT_IDE) {
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if (acafh_cf_intr_status(sc->aca_sc, 1) == 1) {
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ret = wdcintr(&sc->sc_slots[1].channel);
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}
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if (acafh_cf_intr_status(sc->aca_sc, 0) == 1) {
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ret = wdcintr(&sc->sc_slots[0].channel);
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}
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gayle_intr_ack(0x7C | (intreq & GAYLE_INT_IDEACK));
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}
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return ret;
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}
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