/* $NetBSD: wdc_isa.c,v 1.17 2000/02/08 18:40:51 thorpej Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum and by Onno van der Linden. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #define WDC_ISA_REG_NPORTS 8 #define WDC_ISA_AUXREG_OFFSET 0x206 #define WDC_ISA_AUXREG_NPORTS 1 /* XXX "fdc" owns ports 0x3f7/0x377 */ /* options passed via the 'flags' config keyword */ #define WDC_OPTIONS_32 0x01 /* try to use 32bit data I/O */ struct wdc_isa_softc { struct wdc_softc sc_wdcdev; struct channel_softc *wdc_chanptr; struct channel_softc wdc_channel; isa_chipset_tag_t sc_ic; void *sc_ih; int sc_drq; }; int wdc_isa_probe __P((struct device *, struct cfdata *, void *)); void wdc_isa_attach __P((struct device *, struct device *, void *)); struct cfattach wdc_isa_ca = { sizeof(struct wdc_isa_softc), wdc_isa_probe, wdc_isa_attach }; static void wdc_isa_dma_setup __P((struct wdc_isa_softc *)); static int wdc_isa_dma_init __P((void*, int, int, void *, size_t, int)); static void wdc_isa_dma_start __P((void*, int, int, int)); static int wdc_isa_dma_finish __P((void*, int, int, int)); int wdc_isa_probe(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct channel_softc ch = { 0 }; struct isa_attach_args *ia = aux; int result = 0; ch.cmd_iot = ia->ia_iot; if (bus_space_map(ch.cmd_iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, &ch.cmd_ioh)) goto out; ch.ctl_iot = ia->ia_iot; if (bus_space_map(ch.ctl_iot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 0, &ch.ctl_ioh)) goto outunmap; result = wdcprobe(&ch); if (result) { ia->ia_iosize = WDC_ISA_REG_NPORTS; ia->ia_msize = 0; } bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_ISA_AUXREG_NPORTS); outunmap: bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_ISA_REG_NPORTS); out: return (result); } void wdc_isa_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct wdc_isa_softc *sc = (void *)self; struct isa_attach_args *ia = aux; printf("\n"); sc->wdc_channel.cmd_iot = ia->ia_iot; sc->wdc_channel.ctl_iot = ia->ia_iot; sc->sc_ic = ia->ia_ic; if (bus_space_map(sc->wdc_channel.cmd_iot, ia->ia_iobase, WDC_ISA_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh) || bus_space_map(sc->wdc_channel.ctl_iot, ia->ia_iobase + WDC_ISA_AUXREG_OFFSET, WDC_ISA_AUXREG_NPORTS, 0, &sc->wdc_channel.ctl_ioh)) { printf("%s: couldn't map registers\n", sc->sc_wdcdev.sc_dev.dv_xname); } sc->wdc_channel.data32iot = sc->wdc_channel.cmd_iot; sc->wdc_channel.data32ioh = sc->wdc_channel.cmd_ioh; sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_BIO, wdcintr, &sc->wdc_channel); if (ia->ia_drq != DRQUNK) { sc->sc_drq = ia->ia_drq; sc->sc_wdcdev.cap |= WDC_CAPABILITY_DMA; sc->sc_wdcdev.dma_arg = sc; sc->sc_wdcdev.dma_init = wdc_isa_dma_init; sc->sc_wdcdev.dma_start = wdc_isa_dma_start; sc->sc_wdcdev.dma_finish = wdc_isa_dma_finish; wdc_isa_dma_setup(sc); } sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_PREATA; if (sc->sc_wdcdev.sc_dev.dv_cfdata->cf_flags & WDC_OPTIONS_32) sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA32; sc->sc_wdcdev.PIO_cap = 0; sc->wdc_chanptr = &sc->wdc_channel; sc->sc_wdcdev.channels = &sc->wdc_chanptr; sc->sc_wdcdev.nchannels = 1; sc->wdc_channel.channel = 0; sc->wdc_channel.wdc = &sc->sc_wdcdev; sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue), M_DEVBUF, M_NOWAIT); if (sc->wdc_channel.ch_queue == NULL) { printf("%s: can't allocate memory for command queue", sc->sc_wdcdev.sc_dev.dv_xname); return; } wdcattach(&sc->wdc_channel); } static void wdc_isa_dma_setup(sc) struct wdc_isa_softc *sc; { bus_size_t maxsize; if ((maxsize = isa_dmamaxsize(sc->sc_ic, sc->sc_drq)) < MAXPHYS) { printf("%s: max DMA size %lu is less than required %d\n", sc->sc_wdcdev.sc_dev.dv_xname, (u_long)maxsize, MAXPHYS); sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; return; } if (isa_dmamap_create(sc->sc_ic, sc->sc_drq, MAXPHYS, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW)) { printf("%s: can't create map for drq %d\n", sc->sc_wdcdev.sc_dev.dv_xname, sc->sc_drq); sc->sc_wdcdev.cap &= ~WDC_CAPABILITY_DMA; } } static int wdc_isa_dma_init(v, channel, drive, databuf, datalen, read) void *v; void *databuf; size_t datalen; int read; { struct wdc_isa_softc *sc = v; isa_dmastart(sc->sc_ic, sc->sc_drq, databuf, datalen, NULL, (read ? DMAMODE_READ : DMAMODE_WRITE) | DMAMODE_DEMAND, BUS_DMA_NOWAIT); return 0; } static void wdc_isa_dma_start(v, channel, drive, read) void *v; int channel, drive; { /* nothing to do */ } static int wdc_isa_dma_finish(v, channel, drive, read) void *v; int channel, drive; int read; { struct wdc_isa_softc *sc = v; isa_dmadone(sc->sc_ic, sc->sc_drq); return 0; }