xref: /titanic_41/usr/src/uts/common/pcmcia/pcs/pcs.c (revision c7158ae983f5a04c4a998f468ecefba6d23ba721)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <sys/types.h>
30 #include <sys/byteorder.h>
31 #include <sys/systm.h>
32 #include <sys/ddi.h>
33 #include <sys/sunddi.h>
34 
35 int pcs_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **);
36 int pcs_attach(dev_info_t *, ddi_attach_cmd_t);
37 int pcs_detach(dev_info_t *, ddi_detach_cmd_t);
38 dev_info_t *pcs_dip;
39 
40 static struct dev_ops pcs_devops = {
41 	DEVO_REV,
42 	0,
43 	pcs_getinfo,
44 	nulldev,
45 	nulldev,
46 	pcs_attach,
47 	pcs_detach,
48 	nulldev,
49 	NULL,
50 	NULL
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 %I%",	/* 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
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
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
98 _info(struct modinfo *modinfop)
99 {
100 	return (mod_info(&modlinkage, modinfop));
101 }
102 
103 int
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
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 #ifdef lint
145 	dip = dip;
146 	cmd = cmd;
147 #endif
148 
149 	inum = ddi_get_instance(dip);
150 
151 	if (ddi_soft_state_zalloc(pcs_instances, inum) == DDI_SUCCESS) {
152 		inst = (struct pcs_inst *)ddi_get_soft_state(pcs_instances,
153 								inum);
154 		if (inst == NULL)
155 			ret = DDI_FAILURE;
156 		else
157 			inst->dip = dip;
158 	}
159 
160 	return (ret);
161 }
162 
163 int
164 pcs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
165 {
166 	if (cmd == DDI_DETACH) {
167 		ddi_soft_state_free(pcs_instances, ddi_get_instance(dip));
168 		return (DDI_SUCCESS);
169 	}
170 	return (DDI_FAILURE);
171 }
172