1 /*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32 #include <linux/slab.h>
33 #include <asm/byteorder.h>
34
35 #include <rdma/iw_cm.h>
36 #include <rdma/ib_verbs.h>
37
38 #include "cxio_hal.h"
39 #include "cxio_resource.h"
40 #include "iwch.h"
41 #include "iwch_provider.h"
42
43 static int iwch_finish_mem_reg(struct iwch_mr *mhp, u32 stag)
44 {
45 u32 mmid;
46
47 mhp->attr.state = 1;
48 mhp->attr.stag = stag;
49 mmid = stag >> 8;
50 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
51 pr_debug("%s mmid 0x%x mhp %p\n", __func__, mmid, mhp);
52 return xa_insert_irq(&mhp->rhp->mrs, mmid, mhp, GFP_KERNEL);
53 }
54
55 int iwch_register_mem(struct iwch_dev *rhp, struct iwch_pd *php,
56 struct iwch_mr *mhp, int shift)
57 {
58 u32 stag;
59 int ret;
60
61 if (cxio_register_phys_mem(&rhp->rdev,
62 &stag, mhp->attr.pdid,
63 mhp->attr.perms,
64 mhp->attr.zbva,
65 mhp->attr.va_fbo,
66 mhp->attr.len,
67 shift - 12,
68 mhp->attr.pbl_size, mhp->attr.pbl_addr))
69 return -ENOMEM;
70
71 ret = iwch_finish_mem_reg(mhp, stag);
72 if (ret)
73 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
74 mhp->attr.pbl_addr);
75 return ret;
76 }
77
78 int iwch_alloc_pbl(struct iwch_mr *mhp, int npages)
79 {
80 mhp->attr.pbl_addr = cxio_hal_pblpool_alloc(&mhp->rhp->rdev,
81 npages << 3);
82
83 if (!mhp->attr.pbl_addr)
84 return -ENOMEM;
85
86 mhp->attr.pbl_size = npages;
87
88 return 0;
89 }
90
91 void iwch_free_pbl(struct iwch_mr *mhp)
92 {
93 cxio_hal_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr,
94 mhp->attr.pbl_size << 3);
95 }
96
97 int iwch_write_pbl(struct iwch_mr *mhp, __be64 *pages, int npages, int offset)
98 {
99 return cxio_write_pbl(&mhp->rhp->rdev, pages,
100 mhp->attr.pbl_addr + (offset << 3), npages);
101 }