2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Cisco Systems. All rights reserved.
4 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 #ifndef MTHCA_MEMFREE_H
36 #define MTHCA_MEMFREE_H
38 #include <linux/list.h>
39 #include <linux/mutex.h>
41 #define MTHCA_ICM_CHUNK_LEN \
42 ((256 - sizeof (struct list_head) - 2 * sizeof (int)) / \
43 (sizeof (struct scatterlist)))
46 MTHCA_ICM_PAGE_SHIFT
= 12,
47 MTHCA_ICM_PAGE_SIZE
= 1 << MTHCA_ICM_PAGE_SHIFT
,
48 MTHCA_DB_REC_PER_PAGE
= MTHCA_ICM_PAGE_SIZE
/ 8
51 struct mthca_icm_chunk
{
52 struct list_head list
;
55 struct scatterlist mem
[MTHCA_ICM_CHUNK_LEN
];
59 struct list_head chunk_list
;
63 struct mthca_icm_table
{
71 struct mthca_icm
*icm
[];
74 struct mthca_icm_iter
{
75 struct mthca_icm
*icm
;
76 struct mthca_icm_chunk
*chunk
;
82 struct mthca_icm
*mthca_alloc_icm(struct mthca_dev
*dev
, int npages
,
83 gfp_t gfp_mask
, int coherent
);
84 void mthca_free_icm(struct mthca_dev
*dev
, struct mthca_icm
*icm
, int coherent
);
86 struct mthca_icm_table
*mthca_alloc_icm_table(struct mthca_dev
*dev
,
87 u64 virt
, int obj_size
,
88 int nobj
, int reserved
,
89 int use_lowmem
, int use_coherent
);
90 void mthca_free_icm_table(struct mthca_dev
*dev
, struct mthca_icm_table
*table
);
91 int mthca_table_get(struct mthca_dev
*dev
, struct mthca_icm_table
*table
, int obj
);
92 void mthca_table_put(struct mthca_dev
*dev
, struct mthca_icm_table
*table
, int obj
);
93 void *mthca_table_find(struct mthca_icm_table
*table
, int obj
, dma_addr_t
*dma_handle
);
94 int mthca_table_get_range(struct mthca_dev
*dev
, struct mthca_icm_table
*table
,
96 void mthca_table_put_range(struct mthca_dev
*dev
, struct mthca_icm_table
*table
,
99 static inline void mthca_icm_first(struct mthca_icm
*icm
,
100 struct mthca_icm_iter
*iter
)
103 iter
->chunk
= list_empty(&icm
->chunk_list
) ?
104 NULL
: list_entry(icm
->chunk_list
.next
,
105 struct mthca_icm_chunk
, list
);
109 static inline int mthca_icm_last(struct mthca_icm_iter
*iter
)
114 static inline void mthca_icm_next(struct mthca_icm_iter
*iter
)
116 if (++iter
->page_idx
>= iter
->chunk
->nsg
) {
117 if (iter
->chunk
->list
.next
== &iter
->icm
->chunk_list
) {
122 iter
->chunk
= list_entry(iter
->chunk
->list
.next
,
123 struct mthca_icm_chunk
, list
);
128 static inline dma_addr_t
mthca_icm_addr(struct mthca_icm_iter
*iter
)
130 return sg_dma_address(&iter
->chunk
->mem
[iter
->page_idx
]);
133 static inline unsigned long mthca_icm_size(struct mthca_icm_iter
*iter
)
135 return sg_dma_len(&iter
->chunk
->mem
[iter
->page_idx
]);
138 struct mthca_db_page
{
139 DECLARE_BITMAP(used
, MTHCA_DB_REC_PER_PAGE
);
144 struct mthca_db_table
{
148 struct mthca_db_page
*page
;
153 MTHCA_DB_TYPE_INVALID
= 0x0,
154 MTHCA_DB_TYPE_CQ_SET_CI
= 0x1,
155 MTHCA_DB_TYPE_CQ_ARM
= 0x2,
156 MTHCA_DB_TYPE_SQ
= 0x3,
157 MTHCA_DB_TYPE_RQ
= 0x4,
158 MTHCA_DB_TYPE_SRQ
= 0x5,
159 MTHCA_DB_TYPE_GROUP_SEP
= 0x7
162 struct mthca_user_db_table
;
165 int mthca_map_user_db(struct mthca_dev
*dev
, struct mthca_uar
*uar
,
166 struct mthca_user_db_table
*db_tab
, int index
, u64 uaddr
);
167 void mthca_unmap_user_db(struct mthca_dev
*dev
, struct mthca_uar
*uar
,
168 struct mthca_user_db_table
*db_tab
, int index
);
169 struct mthca_user_db_table
*mthca_init_user_db_tab(struct mthca_dev
*dev
);
170 void mthca_cleanup_user_db_tab(struct mthca_dev
*dev
, struct mthca_uar
*uar
,
171 struct mthca_user_db_table
*db_tab
);
173 int mthca_init_db_tab(struct mthca_dev
*dev
);
174 void mthca_cleanup_db_tab(struct mthca_dev
*dev
);
175 int mthca_alloc_db(struct mthca_dev
*dev
, enum mthca_db_type type
,
176 u32 qn
, __be32
**db
);
177 void mthca_free_db(struct mthca_dev
*dev
, int type
, int db_index
);
179 #endif /* MTHCA_MEMFREE_H */