1/*	$NetBSD: hcide.c,v 1.21 2007/10/19 12:01:07 ad 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 1.21 2007/10/19 12:01:07 ad Exp $");
35
36#include <sys/param.h>
37
38#include <sys/device.h>
39#include <sys/systm.h>
40
41#include <sys/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/wdcreg.h>
49#include <dev/ic/wdcvar.h>
50
51struct hcide_softc {
52	struct wdc_softc sc_wdc;
53	struct ata_channel *sc_chp[HCIDE_NCHANNELS];/* pointers to sc_chan */
54	struct ata_channel sc_chan[HCIDE_NCHANNELS];
55	struct ata_queue sc_chq[HCIDE_NCHANNELS];
56	struct wdc_regs sc_wdc_regs[HCIDE_NCHANNELS];
57};
58
59static int  hcide_match  (device_t, cfdata_t, void *);
60static void hcide_attach (device_t, device_t, void *);
61
62CFATTACH_DECL_NEW(hcide, sizeof(struct hcide_softc),
63    hcide_match, hcide_attach, NULL, NULL);
64
65static const int hcide_cmdoffsets[] = { HCIDE_CMD0, HCIDE_CMD1, HCIDE_CMD2 };
66static const int hcide_ctloffsets[] = { HCIDE_CTL, HCIDE_CTL, HCIDE_CTL };
67
68static int
69hcide_match(device_t parent, cfdata_t cf, void *aux)
70{
71	struct podulebus_attach_args *pa = aux;
72
73	if (pa->pa_product == PODULE_HCCS_IDESCSI &&
74	    strncmp(pa->pa_descr, "IDE", 3) == 0)
75		return 1;
76	return 0;
77}
78
79static void
80hcide_attach(device_t parent, device_t self, void *aux)
81{
82	struct hcide_softc *sc = device_private(self);
83	struct wdc_regs *wdr;
84	struct podulebus_attach_args *pa = aux;
85	struct ata_channel *ch;
86	int i, j;
87
88	sc->sc_wdc.sc_atac.atac_dev = self;
89	sc->sc_wdc.regs = sc->sc_wdc_regs;
90
91	sc->sc_wdc.sc_atac.atac_cap = ATAC_CAP_DATA16 | ATAC_CAP_NOIRQ;
92	sc->sc_wdc.sc_atac.atac_pio_cap = 0; /* XXX correct? */
93	sc->sc_wdc.sc_atac.atac_nchannels = HCIDE_NCHANNELS;
94	sc->sc_wdc.sc_atac.atac_channels = sc->sc_chp;
95	aprint_normal("\n");
96	for (i = 0; i < HCIDE_NCHANNELS; i++) {
97		ch = sc->sc_chp[i] = &sc->sc_chan[i];
98		wdr = &sc->sc_wdc_regs[i];
99		ch->ch_channel = i;
100		ch->ch_atac = &sc->sc_wdc.sc_atac;
101		wdr->cmd_iot = pa->pa_mod_t;
102		wdr->ctl_iot = pa->pa_mod_t;
103		ch->ch_queue = &sc->sc_chq[i];
104		ch->ch_ndrive = 2;
105		bus_space_map(pa->pa_fast_t,
106		    pa->pa_fast_base + hcide_cmdoffsets[i], 0, 8,
107		    &wdr->cmd_baseioh);
108		for (j = 0; j < WDC_NREG; j++)
109			bus_space_subregion(wdr->cmd_iot, wdr->cmd_baseioh,
110			    j, j == 0 ? 4 : 1, &wdr->cmd_iohs[j]);
111		wdc_init_shadow_regs(ch);
112		bus_space_map(pa->pa_fast_t,
113		    pa->pa_fast_base + hcide_ctloffsets[i], 0, 8,
114		    &wdr->ctl_ioh);
115		wdcattach(ch);
116	}
117}
118