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 #ifndef	_QLT_DMA_H
26 #define	_QLT_DMA_H
27 
28 #include <stmf.h>
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 struct qlt_dmem_bucket;
35 
36 typedef struct qlt_dmem_bctl {
37 	struct qlt_dmem_bucket	*bctl_bucket;
38 	struct qlt_dmem_bctl	*bctl_next;
39 	uint64_t		bctl_dev_addr;
40 	uint8_t			bctl_task_ndx;
41 	stmf_data_buf_t		*bctl_buf;
42 } qlt_dmem_bctl_t;
43 
44 typedef struct qlt_dmem_bucket {
45 	uint32_t		dmem_buf_size;
46 	uint32_t		dmem_nbufs;
47 	uint32_t		dmem_nbufs_free;
48 	uint8_t			*dmem_host_addr;
49 	uint64_t		dmem_dev_addr;
50 	ddi_dma_handle_t	dmem_dma_handle;
51 	ddi_acc_handle_t	dmem_acc_handle;
52 	kmutex_t		dmem_lock;
53 	qlt_dmem_bctl_t		*dmem_bctl_free_list;
54 	void			*dmem_bctls_mem;
55 } qlt_dmem_bucket_t;
56 
57 fct_status_t qlt_dmem_init(qlt_state_t *qlt);
58 void qlt_dmem_fini(qlt_state_t *qlt);
59 stmf_data_buf_t *qlt_dmem_alloc(fct_local_port_t *port, uint32_t size,
60     uint32_t *pminsize, uint32_t flags);
61 stmf_data_buf_t *qlt_i_dmem_alloc(qlt_state_t *qlt, uint32_t size,
62 				uint32_t *pminsize, uint32_t flags);
63 void qlt_dmem_free(fct_dbuf_store_t *fds, stmf_data_buf_t *dbuf);
64 void qlt_i_dmem_free(qlt_state_t *qlt, stmf_data_buf_t *dbuf);
65 void qlt_dmem_dma_sync(stmf_data_buf_t *dbuf, uint_t sync_type);
66 
67 #ifdef	__cplusplus
68 }
69 #endif
70 
71 #endif /* _QLT_DMA_H */
72