xsvc.h revision 8648:766bb1698e05 
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/*
23 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef _SYS_XSVC_H
28#define	_SYS_XSVC_H
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34#include <sys/avl.h>
35#include <sys/types.h>
36
37/* xsvc ioctls */
38#define	XSVCIOC		('Q'<< 8)
39#define	XSVC_ALLOC_MEM	(XSVCIOC | 130)
40#define	XSVC_FREE_MEM	(XSVCIOC | 131)
41#define	XSVC_FLUSH_MEM	(XSVCIOC | 132)
42
43/* arg * struct for ioctls */
44typedef struct _xsvc_mem_req {
45	int		xsvc_mem_reqid; /* request ID */
46	uint64_t	xsvc_mem_addr_lo; /* low DMA address range */
47	uint64_t	xsvc_mem_addr_hi; /* high DMA address range */
48	uint64_t	xsvc_mem_align; /* DMA address alignment */
49	int		xsvc_mem_sgllen; /* s/g length */
50	size_t		xsvc_mem_size; /* length of mem in bytes */
51	void		*xsvc_sg_list; /* returned scatter gather list */
52} xsvc_mem_req;
53
54/* xsvc_sg_list format */
55typedef struct _xsvc_mloc {
56	uint64_t	mloc_addr;
57	size_t		mloc_size;
58} xsvc_mloc;
59
60#ifdef _KERNEL
61/* *** Driver Private Below *** */
62
63/* arg * struct for ioctls from 32-bit app in 64-bit kernel */
64#pragma pack(1)
65typedef struct _xsvc_mem_req_32 {
66	int		xsvc_mem_reqid; /* request ID */
67	uint64_t	xsvc_mem_addr_lo; /* low DMA address range */
68	uint64_t	xsvc_mem_addr_hi; /* high DMA address range */
69	uint64_t	xsvc_mem_align; /* DMA address alignment */
70	int		xsvc_mem_sgllen; /* s/g length */
71	uint32_t	xsvc_mem_size; /* length of mem in bytes */
72	uint32_t	xsvc_sg_list; /* returned scatter gather list */
73} xsvc_mem_req_32;
74#pragma pack()
75
76/* xsvc_sg_list format */
77#pragma pack(1)
78typedef struct _xsvc_mloc_32 {
79	uint64_t	mloc_addr;
80	uint32_t	mloc_size;
81} xsvc_mloc_32;
82#pragma pack()
83
84/* avl node */
85typedef struct xsvc_mnode_s {
86	avl_node_t		mn_link;
87	uint64_t		mn_key;
88	struct xsvc_mem_s	*mn_home;
89} xsvc_mnode_t;
90
91/* track memory allocs */
92typedef struct xsvc_mem_s {
93	xsvc_mnode_t		xm_mnode;
94	size_t			xm_size;
95	caddr_t			xm_addr;
96	size_t			xm_real_length;
97	ddi_dma_handle_t	xm_dma_handle;
98	ddi_acc_handle_t	xm_mem_handle;
99	ddi_dma_attr_t		xm_dma_attr;
100	ddi_device_acc_attr_t	xm_device_attr;
101	uint_t			xm_cookie_count;
102	ddi_dma_cookie_t	xm_cookie;
103} xsvc_mem_t;
104
105/* list of memory allocs */
106typedef struct xsvc_mlist_s {
107	kmutex_t	ml_mutex;
108	avl_tree_t	ml_avl;
109} xsvc_mlist_t;
110
111/* driver state */
112typedef struct xsvc_state_s {
113	dev_info_t	*xs_dip;
114	int		xs_instance;
115
116	/*
117	 * track total memory allocated, mutex only covers
118	 * xs_currently_alloced
119	 */
120	kmutex_t	xs_mutex;
121	uint64_t	xs_currently_alloced;
122
123	kmutex_t	xs_cookie_mutex;
124
125	xsvc_mlist_t	xs_mlist;
126} xsvc_state_t;
127
128#endif /* _KERNEL */
129
130#ifdef __cplusplus
131}
132#endif
133
134#endif /* _SYS_XSVC_H */
135