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
64 devclass_t stg_devclass;
65
66 int
stg_alloc_resource(device_t dev)67 stg_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
107 void
stg_release_resource(device_t dev)108 stg_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
126 int
stg_probe(device_t dev)127 stg_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
138 int
stg_attach(device_t dev)139 stg_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
158 int
stg_detach(device_t dev)159 stg_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
169 void
stg_intr(void * arg)170 stg_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