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hcide.c revision 1.2 
      1 /*	$NetBSD: hcide.c,v 1.2 2001/11/13 07:23:15 lukem Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000, 2001 Ben Harris
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 /*
     30  * hcide.c - Driver for the HCCS 16-bit IDE interface.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: hcide.c,v 1.2 2001/11/13 07:23:15 lukem Exp $");
     35 
     36 #include <sys/param.h>
     37 
     38 #include <sys/device.h>
     39 #include <sys/systm.h>
     40 
     41 #include <machine/bus.h>
     42 
     43 #include <dev/podulebus/podulebus.h>
     44 #include <dev/podulebus/podules.h>
     45 #include <dev/podulebus/hcidereg.h>
     46 
     47 #include <dev/ata/atavar.h>
     48 #include <dev/ic/wdcvar.h>
     49 
     50 struct hcide_softc {
     51 	struct wdc_softc sc_wdc;
     52 	struct channel_softc *sc_chp[HCIDE_NCHANNELS];/* pointers to sc_chan */
     53 	struct channel_softc sc_chan[HCIDE_NCHANNELS];
     54 	struct channel_queue sc_chq[HCIDE_NCHANNELS];
     55 };
     56 
     57 static void hcide_attach (struct device *, struct device *, void *);
     58 static int  hcide_match  (struct device *, struct cfdata *, void *);
     59 
     60 struct cfattach hcide_ca = {
     61 	sizeof(struct hcide_softc), hcide_match, hcide_attach
     62 };
     63 
     64 static const int hcide_cmdoffsets[] = { HCIDE_CMD0, HCIDE_CMD1, HCIDE_CMD2 };
     65 static const int hcide_ctloffsets[] = { HCIDE_CTL, HCIDE_CTL, HCIDE_CTL };
     66 
     67 static int
     68 hcide_match(struct device *parent, struct cfdata *cf, void *aux)
     69 {
     70 	struct podulebus_attach_args *pa = aux;
     71 
     72 	if (pa->pa_product == PODULE_HCCS_IDESCSI &&
     73 	    strncmp(pa->pa_descr, "IDE", 3) == 0)
     74 		return 1;
     75 	return 0;
     76 }
     77 
     78 static void
     79 hcide_attach(struct device *parent, struct device *self, void *aux)
     80 {
     81 	struct hcide_softc *sc = (void *)self;
     82 	struct podulebus_attach_args *pa = aux;
     83 	int i;
     84 
     85 	sc->sc_wdc.cap = WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_NOIRQ;
     86 	sc->sc_wdc.PIO_cap = 0; /* XXX correct? */
     87 	sc->sc_wdc.DMA_cap = 0; /* XXX correct? */
     88 	sc->sc_wdc.UDMA_cap = 0;
     89 	sc->sc_wdc.nchannels = HCIDE_NCHANNELS;
     90 	sc->sc_wdc.channels = sc->sc_chp;
     91 	printf("\n");
     92 	for (i = 0; i < HCIDE_NCHANNELS; i++) {
     93 		sc->sc_chp[i] = &sc->sc_chan[i];
     94 		sc->sc_chan[i].channel = i;
     95 		sc->sc_chan[i].wdc = &sc->sc_wdc;
     96 		sc->sc_chan[i].cmd_iot = pa->pa_mod_t;
     97 		sc->sc_chan[i].ctl_iot = pa->pa_mod_t;
     98 		sc->sc_chan[i].ch_queue = &sc->sc_chq[i];
     99 		bus_space_map(pa->pa_fast_t,
    100 		    pa->pa_fast_base + hcide_cmdoffsets[i], 0, 8,
    101 		    &sc->sc_chan[i].cmd_ioh);
    102 		bus_space_map(pa->pa_fast_t,
    103 		    pa->pa_fast_base + hcide_ctloffsets[i], 0, 8,
    104 		    &sc->sc_chan[i].ctl_ioh);
    105 		wdcattach(&sc->sc_chan[i]);
    106 	}
    107 }
    108