wdc_ofisa.c revision 1.28 
1/*	$NetBSD: wdc_ofisa.c,v 1.28 2006/03/29 07:09:33 thorpej Exp $	*/
2
3/*
4 * Copyright 1997, 1998
5 * Digital Equipment Corporation. All rights reserved.
6 *
7 * This software is furnished under license and may be used and
8 * copied only in accordance with the following terms and conditions.
9 * Subject to these conditions, you may download, copy, install,
10 * use, modify and distribute this software in source and/or binary
11 * form. No title or ownership is transferred hereby.
12 *
13 * 1) Any source code used, modified or distributed must reproduce
14 *    and retain this copyright notice and list of conditions as
15 *    they appear in the source file.
16 *
17 * 2) No right is granted to use any trade name, trademark, or logo of
18 *    Digital Equipment Corporation. Neither the "Digital Equipment
19 *    Corporation" name nor any trademark or logo of Digital Equipment
20 *    Corporation may be used to endorse or promote products derived
21 *    from this software without the prior written permission of
22 *    Digital Equipment Corporation.
23 *
24 * 3) This software is provided "AS-IS" and any express or implied
25 *    warranties, including but not limited to, any implied warranties
26 *    of merchantability, fitness for a particular purpose, or
27 *    non-infringement are disclaimed. In no event shall DIGITAL be
28 *    liable for any damages whatsoever, and in particular, DIGITAL
29 *    shall not be liable for special, indirect, consequential, or
30 *    incidental damages or damages for lost profits, loss of
31 *    revenue or loss of use, whether such damages arise in contract,
32 *    negligence, tort, under statute, in equity, at law or otherwise,
33 *    even if advised of the possibility of such damage.
34 */
35
36/*
37 * OFW Attachment for 'wdc' disk controller driver
38 */
39
40#include <sys/cdefs.h>
41__KERNEL_RCSID(0, "$NetBSD: wdc_ofisa.c,v 1.28 2006/03/29 07:09:33 thorpej Exp $");
42
43#include <sys/param.h>
44#include <sys/device.h>
45#include <sys/systm.h>
46#include <sys/tty.h>
47#include <sys/malloc.h>
48
49#include <machine/intr.h>
50#include <machine/bus.h>
51
52#include <dev/ofw/openfirm.h>
53#include <dev/isa/isavar.h>
54#include <dev/ofisa/ofisavar.h>
55
56#include <dev/ic/wdcreg.h>		/* ??? */
57#include <dev/ata/atavar.h>
58#include <dev/ic/wdcvar.h>
59
60struct wdc_ofisa_softc {
61	struct wdc_softc sc_wdcdev;
62	struct ata_channel *sc_chanlist[1];
63	struct ata_channel sc_channel;
64	struct ata_queue sc_chqueue;
65	struct wdc_regs wdc_regs;
66	void	*sc_ih;
67};
68
69static int wdc_ofisa_probe(struct device *, struct cfdata *, void *);
70static void wdc_ofisa_attach(struct device *, struct device *, void *);
71
72CFATTACH_DECL(wdc_ofisa, sizeof(struct wdc_ofisa_softc),
73    wdc_ofisa_probe, wdc_ofisa_attach, NULL, NULL);
74
75static int
76wdc_ofisa_probe(struct device *parent, struct cfdata *cf, void *aux)
77{
78	struct ofisa_attach_args *aa = aux;
79	static const char *const compatible_strings[] = { "pnpPNP,600", NULL };
80	int rv = 0;
81
82	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
83		rv = 5;
84#ifdef _WDC_OFISA_MD_MATCH
85	if (!rv)
86		rv = wdc_ofisa_md_match(parent, cf, aux);
87#endif
88	return (rv);
89}
90
91static void
92wdc_ofisa_attach(struct device *parent, struct device *self, void *aux)
93{
94	struct wdc_ofisa_softc *sc = device_private(self);
95	struct wdc_regs *wdr;
96	struct ofisa_attach_args *aa = aux;
97	struct ofisa_reg_desc reg[2];
98	struct ofisa_intr_desc intr;
99	int n;
100	bus_space_handle_t ioh;
101
102	/*
103	 * We're living on an ofw.  We have to ask the OFW what our
104	 * registers and interrupts properties look like.
105	 *
106	 * We expect exactly two register regions and one interrupt.
107	 */
108
109	sc->sc_wdcdev.regs = wdr = &sc->wdc_regs;
110
111	n = ofisa_reg_get(aa->oba.oba_phandle, reg, 2);
112#ifdef _WDC_OFISA_MD_REG_FIXUP
113	n = wdc_ofisa_md_reg_fixup(parent, self, aux, reg, 2, n);
114#endif
115	if (n != 2) {
116		printf(": error getting register data\n");
117		return;
118	}
119	if (reg[0].len != 8 || reg[1].len != 2) {
120		printf(": weird register size (%lu/%lu, expected 8/2)\n",
121		    (unsigned long)reg[0].len, (unsigned long)reg[1].len);
122		return;
123	}
124
125	n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
126#ifdef _WDC_OFISA_MD_INTR_FIXUP
127	n = wdc_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
128#endif
129	if (n != 1) {
130		printf(": error getting interrupt data\n");
131		return;
132	}
133
134	wdr->cmd_iot = (reg[0].type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
135	wdr->ctl_iot = (reg[1].type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
136        if (bus_space_map(wdr->cmd_iot, reg[0].addr, 8, 0, &ioh) ||
137            bus_space_map(wdr->ctl_iot, reg[1].addr, 1, 0,
138	      &wdr->ctl_ioh)) {
139                printf(": can't map register spaces\n");
140		return;
141        }
142	wdr->cmd_baseioh = ioh;
143
144	for (n = 0; n < WDC_NREG; n++) {
145		if (bus_space_subregion(wdr->cmd_iot, ioh, n,
146		    n == 0 ? 4 : 1, &wdr->cmd_iohs[n]) != 0) {
147                	printf(": can't subregion register space\n");
148			return;
149		}
150	}
151
152	sc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share,
153	    IPL_BIO, wdcintr, &sc->sc_channel);
154
155	printf("\n");
156	sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_DATA16;
157	sc->sc_chanlist[0] = &sc->sc_channel;
158	sc->sc_wdcdev.sc_atac.atac_channels = sc->sc_chanlist;
159	sc->sc_wdcdev.sc_atac.atac_nchannels = 1;
160	sc->sc_channel.ch_channel = 0;
161	sc->sc_channel.ch_atac = &sc->sc_wdcdev.sc_atac;
162	sc->sc_channel.ch_queue = &sc->sc_chqueue;
163	sc->sc_channel.ch_ndrive = 2;
164
165	wdc_init_shadow_regs(&sc->sc_channel);
166
167	wdcattach(&sc->sc_channel);
168
169#if 0
170	printf("%s: registers: ", sc->sc_dev.dv_xname);
171	ofisa_reg_print(reg, 2);
172	printf("\n");
173	printf("%s: interrupts: ", sc->sc_dev.dv_xname);
174	ofisa_intr_print(&intr, 1);
175	printf("\n");
176#endif
177}
178