1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * [Ported for FreeBSD]
5 *  Copyright (c) 2000
6 *      Noriaki Mitsunaga, Mitsuru Iwasaki and Takanori Watanabe.
7 *      All rights reserved.
8 * [NetBSD for NEC PC-98 series]
9 *  Copyright (c) 1996, 1997, 1998
10 *	NetBSD/pc98 porting staff. All rights reserved.
11 *  Copyright (c) 1996, 1997, 1998
12 *	Naofumi HONDA. All rights reserved.
13 *  Copyright (c) 1996, 1997, 1998
14 *	Kouichi Matsuda. All rights reserved.
15 *
16 *  Redistribution and use in source and binary forms, with or without
17 *  modification, are permitted provided that the following conditions
18 *  are met:
19 *  1. Redistributions of source code must retain the above copyright
20 *     notice, this list of conditions and the following disclaimer.
21 *  2. Redistributions in binary form must reproduce the above copyright
22 *     notice, this list of conditions and the following disclaimer in the
23 *     documentation and/or other materials provided with the distribution.
24 *  3. The name of the author may not be used to endorse or promote products
25 *     derived from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
28 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
29 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
30 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
31 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
32 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
33 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
36 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 *
39 */
40
41#include <sys/cdefs.h>
42__FBSDID("$FreeBSD$");
43
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/kernel.h>
47#include <sys/socket.h>
48
49#include <sys/module.h>
50#include <sys/bus.h>
51
52#include <machine/bus.h>
53#include <machine/resource.h>
54#include <sys/rman.h>
55
56#include <cam/scsi/scsi_low.h>
57
58#include <dev/stg/tmc18c30reg.h>
59#include <dev/stg/tmc18c30var.h>
60#include <dev/stg/tmc18c30.h>
61
62#define	STG_HOSTID	7
63
64devclass_t stg_devclass;
65
66int
67stg_alloc_resource(device_t dev)
68{
69	struct stg_softc *	sc = device_get_softc(dev);
70	rman_res_t		maddr, msize;
71	int			error;
72
73	mtx_init(&sc->sc_sclow.sl_lock, "stg", NULL, MTX_DEF);
74	sc->port_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
75					      &sc->port_rid, RF_ACTIVE);
76	if (sc->port_res == NULL) {
77		stg_release_resource(dev);
78		return(ENOMEM);
79	}
80
81	sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
82					     RF_ACTIVE);
83	if (sc->irq_res == NULL) {
84		stg_release_resource(dev);
85		return(ENOMEM);
86	}
87	error = bus_get_resource(dev, SYS_RES_MEMORY, 0, &maddr, &msize);
88	if (error) {
89		return(0);      /* XXX */
90	}
91
92	/* no need to allocate memory if not configured */
93	if (maddr == 0 || msize == 0) {
94		return(0);
95	}
96
97	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
98					     RF_ACTIVE);
99	if (sc->mem_res == NULL) {
100		stg_release_resource(dev);
101		return(ENOMEM);
102	}
103
104	return(0);
105}
106
107void
108stg_release_resource(device_t dev)
109{
110	struct stg_softc	*sc = device_get_softc(dev);
111
112	if (sc->stg_intrhand)
113		bus_teardown_intr(dev, sc->irq_res, sc->stg_intrhand);
114	if (sc->port_res)
115		bus_release_resource(dev, SYS_RES_IOPORT,
116				     sc->port_rid, sc->port_res);
117	if (sc->irq_res)
118		bus_release_resource(dev, SYS_RES_IRQ,
119				     sc->irq_rid, sc->irq_res);
120	if (sc->mem_res)
121		bus_release_resource(dev, SYS_RES_MEMORY,
122				     sc->mem_rid, sc->mem_res);
123	mtx_destroy(&sc->sc_sclow.sl_lock);
124}
125
126int
127stg_probe(device_t dev)
128{
129	int rv;
130	struct stg_softc *sc = device_get_softc(dev);
131
132	rv = stgprobesubr(sc->port_res,
133			  device_get_flags(dev));
134
135	return rv;
136}
137
138int
139stg_attach(device_t dev)
140{
141	struct stg_softc *sc;
142	struct scsi_low_softc *slp;
143	u_int32_t flags = device_get_flags(dev);
144
145	sc = device_get_softc(dev);
146
147	slp = &sc->sc_sclow;
148	slp->sl_dev = dev;
149
150	slp->sl_hostid = STG_HOSTID;
151	slp->sl_cfgflags = flags;
152
153	stgattachsubr(sc);
154
155	return(STGIOSZ);
156}
157
158int
159stg_detach(device_t dev)
160{
161	struct stg_softc *sc = device_get_softc(dev);
162
163	scsi_low_deactivate(&sc->sc_sclow);
164	scsi_low_detach(&sc->sc_sclow);
165	stg_release_resource(dev);
166	return (0);
167}
168
169void
170stg_intr(void *arg)
171{
172	struct stg_softc *sc;
173
174	sc = arg;
175	SCSI_LOW_LOCK(&sc->sc_sclow);
176	stgintr(sc);
177	SCSI_LOW_UNLOCK(&sc->sc_sclow);
178}
179