xref: /titanic_41/usr/src/uts/common/sys/ddi_hp_impl.h (revision 4f6e674fbbae301788090311a9ecf340d0ef7f8b)
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 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef	_SYS_DDI_HP_IMPL_H
27 #define	_SYS_DDI_HP_IMPL_H
28 
29 /*
30  * Sun DDI hotplug implementation specific definitions
31  */
32 
33 #ifdef	__cplusplus
34 extern "C" {
35 #endif
36 
37 #ifdef _KERNEL
38 
39 /* Flags for sync request and async hotplug request */
40 #define	DDI_HP_REQ_SYNC 0x0001
41 #define	DDI_HP_REQ_ASYNC 0x0002
42 
43 /* Check if a handle represents a port or a connector */
44 #define	DDI_HP_IS_VIRTUAL_PORT(hdlp)		\
45 	(hdlp->cn_info.cn_type == DDI_HP_CN_TYPE_VIRTUAL_PORT)
46 
47 /*
48  * ddi_hp_cn_handle_t
49  *
50  * DDI handle for a registered Hotplug Connection (CN)
51  */
52 typedef struct ddi_hp_cn_handle {
53 	dev_info_t		*cn_dip; /* The dip that the handle is linked */
54 	ddi_hp_cn_info_t	cn_info; /* Connection info */
55 	struct ddi_hp_cn_handle	*next;	 /* Next Connector/Port. */
56 } ddi_hp_cn_handle_t;
57 
58 typedef struct ddi_hp_cn_async_event_entry {
59 	dev_info_t			*dip;
60 	char				*cn_name;
61 	ddi_hp_cn_state_t		target_state;
62 } ddi_hp_cn_async_event_entry_t;
63 
64 /*
65  * ddi_hp_op_t
66  *
67  * Typedef for Hotplug OPS commands used with bus_hp_op()
68  */
69 typedef enum {
70 	DDI_HPOP_CN_GET_STATE = 1,	/* Get Connection state */
71 	DDI_HPOP_CN_CHANGE_STATE,	/* Change Connection state */
72 	DDI_HPOP_CN_PROBE,		/* Probe Connection */
73 	DDI_HPOP_CN_UNPROBE,		/* Unprobe Connection */
74 	DDI_HPOP_CN_GET_PROPERTY,	/* Get bus specific property */
75 	DDI_HPOP_CN_SET_PROPERTY,	/* Set bus specific property */
76 	DDI_HPOP_CN_CREATE_PORT,	/* Create a port for virtual hotplug */
77 	DDI_HPOP_CN_REMOVE_PORT		/* Remove an empty port */
78 } ddi_hp_op_t;
79 
80 #define	DDIHP_CN_OPS(hdlp, op, arg, result, ret)		\
81 	if (DDI_HP_IS_VIRTUAL_PORT(hdlp))			\
82 		ret = ddihp_port_ops(hdlp, op, arg, result);	\
83 	else							\
84 		ret = ddihp_connector_ops(hdlp, op, arg, result);
85 
86 #define	NEXUS_HAS_HP_OP(dip)						\
87 	((DEVI(dip)->devi_ops->devo_bus_ops) &&				\
88 	(DEVI(dip)->devi_ops->devo_bus_ops->busops_rev >= BUSO_REV_10) && \
89 	(DEVI(dip)->devi_ops->devo_bus_ops->bus_hp_op))
90 
91 /*
92  * ddi_hp_cn_sysevent_t
93  *
94  * The following correspond to sysevent defined subclasses
95  */
96 typedef enum {
97 	DDI_HP_CN_STATE_CHANGE,
98 	DDI_HP_CN_REQ
99 } ddi_hp_cn_sysevent_t;
100 
101 /*
102  * Misc
103  */
104 
105 /* Append a node to list */
106 #define	DDIHP_LIST_APPEND(type, head, node)				\
107 if (node) {								\
108 	type *curr, *prev = NULL;					\
109 	(node)->next = NULL;						\
110 	for (curr = (head); curr; prev = curr, curr = curr->next);	\
111 	if (prev == NULL)						\
112 		(head) = (node);					\
113 	else								\
114 		prev->next = (node);					\
115 }
116 
117 /* Remove a node from a list */
118 #define	DDIHP_LIST_REMOVE(type, head, node)				\
119 if (node) {								\
120 	type *curr, *prev = NULL;					\
121 	for (curr = (head); curr; prev = curr, curr = curr->next) {	\
122 		if (curr == (node))					\
123 			break;						\
124 	}								\
125     if (curr) {								\
126 	if (prev == NULL)						\
127 		(head) = (head)->next;					\
128 	else								\
129 		prev->next = curr->next;				\
130 	}								\
131 }
132 
133 int ddihp_modctl(int hp_op, char *path, char *cn_name, uintptr_t arg,
134     uintptr_t rval);
135 ddi_hp_cn_handle_t *ddihp_cn_name_to_handle(dev_info_t *dip, char *cn_name);
136 int ddihp_cn_getstate(ddi_hp_cn_handle_t *hdlp);
137 int ddihp_port_ops(ddi_hp_cn_handle_t *hdlp, ddi_hp_op_t op,
138     void *arg, void *result);
139 int ddihp_connector_ops(ddi_hp_cn_handle_t *hdlp,
140     ddi_hp_op_t op, void *arg, void *result);
141 void ddihp_cn_gen_sysevent(ddi_hp_cn_handle_t *hdlp,
142     ddi_hp_cn_sysevent_t event_sub_class, int hint, int kmflag);
143 int ddihp_cn_unregister(ddi_hp_cn_handle_t *hdlp);
144 
145 #endif /* _KERNEL */
146 
147 #ifdef	__cplusplus
148 }
149 #endif
150 
151 #endif	/* _SYS_DDI_HP_IMPL_H */
152