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Diffstat (limited to 'sys/dev/isa/wdc_isa.c')
-rw-r--r--sys/dev/isa/wdc_isa.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/sys/dev/isa/wdc_isa.c b/sys/dev/isa/wdc_isa.c
new file mode 100644
index 00000000000..ae8a28842d0
--- /dev/null
+++ b/sys/dev/isa/wdc_isa.c
@@ -0,0 +1,235 @@
+/* $OpenBSD: wdc_isa.c,v 1.1 1999/07/18 21:25:18 csapuntz Exp $ */
+/* $NetBSD: wdc_isa.c,v 1.15 1999/05/19 14:41:25 bouyer 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 <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/isa/isavar.h>
+#include <dev/isa/isadmavar.h>
+
+#include <dev/ata/atavar.h>
+#include <dev/ic/wdcvar.h>
+
+#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;
+};
+
+#ifndef __OpenBSD__
+int wdc_isa_probe __P((struct device *, struct cfdata *, void *));
+#else
+int wdc_isa_probe __P((struct device *, void *, void *));
+#endif
+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;
+#ifndef __OpenBSD__
+ struct cfdata *match;
+#else
+ void *match;
+#endif
+ 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;
+
+#ifdef __OpenBSD__
+ sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
+ IPL_BIO, wdcintr, &sc->wdc_channel, sc->sc_wdcdev.sc_dev.dv_xname);
+#else
+ sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
+ IPL_BIO, wdcintr, &sc->wdc_channel);
+#endif
+ 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);
+ wdc_final_attach(&sc->wdc_channel);
+}
+
+static void
+wdc_isa_dma_setup(sc)
+ struct wdc_isa_softc *sc;
+{
+ 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)
+#ifndef __OpenBSD__
+| DMAMODE_DEMAND,
+#else
+,
+#endif
+ 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;
+}
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