xref: /illumos-gate/usr/src/uts/common/pcmcia/pcs/pcs.c (revision 19397407)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 
27 #include <sys/types.h>
28 #include <sys/byteorder.h>
29 #include <sys/systm.h>
30 #include <sys/ddi.h>
31 #include <sys/sunddi.h>
32 
33 int pcs_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
34 int pcs_attach(dev_info_t *, ddi_attach_cmd_t);
35 int pcs_detach(dev_info_t *, ddi_detach_cmd_t);
36 dev_info_t *pcs_dip;
37 
38 static struct dev_ops pcs_devops = {
39 	DEVO_REV,
40 	0,
41 	pcs_getinfo,
42 	nulldev,
43 	nulldev,
44 	pcs_attach,
45 	pcs_detach,
46 	nulldev,
47 	NULL,
48 	NULL,
49 	NULL,
50 	ddi_quiesce_not_needed,		/* quiesce */
51 };
52 /*
53  * This is the loadable module wrapper.
54  */
55 #include <sys/modctl.h>
56 
57 extern struct mod_ops mod_driverops;
58 
59 static struct modldrv modldrv = {
60 	&mod_driverops,		/* Type of module. This one is a driver */
61 	"PCMCIA Socket Driver",	/* Name of the module. */
62 	&pcs_devops,		/* driver ops */
63 };
64 
65 static struct modlinkage modlinkage = {
66 	MODREV_1, (void *)&modldrv, NULL
67 };
68 
69 struct pcs_inst {
70 	dev_info_t *dip;
71 } *pcs_instances;
72 
73 int
_init()74 _init()
75 {
76 	int ret;
77 	if ((ret = ddi_soft_state_init((void **)&pcs_instances,
78 	    sizeof (struct pcs_inst), 1)) != 0)
79 		return (ret);
80 	if ((ret = mod_install(&modlinkage)) != 0) {
81 		ddi_soft_state_fini((void **)&pcs_instances);
82 	}
83 	return (ret);
84 }
85 
86 int
_fini()87 _fini()
88 {
89 	int ret;
90 	ret = mod_remove(&modlinkage);
91 	if (ret == 0) {
92 		ddi_soft_state_fini((void **)&pcs_instances);
93 	}
94 	return (ret);
95 }
96 
97 int
_info(struct modinfo * modinfop)98 _info(struct modinfo *modinfop)
99 {
100 	return (mod_info(&modlinkage, modinfop));
101 }
102 
103 int
pcs_getinfo(dev_info_t * dip,ddi_info_cmd_t cmd,void * arg,void ** result)104 pcs_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result)
105 {
106 	int error = DDI_SUCCESS;
107 	int inum;
108 	struct pcs_inst *inst;
109 #ifdef lint
110 	dip = dip;
111 #endif
112 
113 	switch (cmd) {
114 	case DDI_INFO_DEVT2DEVINFO:
115 		inum = getminor((dev_t)arg);
116 		inst = (struct pcs_inst *)ddi_get_soft_state(pcs_instances,
117 		    inum);
118 		if (inst == NULL)
119 			error = DDI_FAILURE;
120 		else
121 			*result = inst->dip;
122 		break;
123 	case DDI_INFO_DEVT2INSTANCE:
124 		inum = getminor((dev_t)arg);
125 		inst = (struct pcs_inst *)ddi_get_soft_state(pcs_instances,
126 		    inum);
127 		if (inst == NULL)
128 			error = DDI_FAILURE;
129 		else
130 			*result = (void *)(uintptr_t)inum;
131 		break;
132 	default:
133 		error = DDI_FAILURE;
134 	}
135 	return (error);
136 }
137 
138 int
pcs_attach(dev_info_t * dip,ddi_attach_cmd_t cmd)139 pcs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
140 {
141 	int ret = DDI_SUCCESS;
142 	int inum;
143 	struct pcs_inst *inst;
144 
145 	switch (cmd) {
146 	case DDI_RESUME:
147 		return (DDI_SUCCESS);
148 	case DDI_ATTACH:
149 		break;
150 	default:
151 		return (DDI_FAILURE);
152 	}
153 
154 	inum = ddi_get_instance(dip);
155 
156 	if (ddi_soft_state_zalloc(pcs_instances, inum) == DDI_SUCCESS) {
157 		inst = (struct pcs_inst *)ddi_get_soft_state(pcs_instances,
158 		    inum);
159 		if (inst == NULL)
160 			ret = DDI_FAILURE;
161 		else
162 			inst->dip = dip;
163 	}
164 
165 	return (ret);
166 }
167 
168 int
pcs_detach(dev_info_t * dip,ddi_detach_cmd_t cmd)169 pcs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
170 {
171 	switch (cmd) {
172 	case DDI_DETACH:
173 		ddi_soft_state_free(pcs_instances, ddi_get_instance(dip));
174 		return (DDI_SUCCESS);
175 
176 	case DDI_SUSPEND:
177 	case DDI_PM_SUSPEND:
178 		return (DDI_SUCCESS);
179 	default:
180 		break;
181 	}
182 	return (DDI_FAILURE);
183 }
184