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-rw-r--r--drivers/net/mlx4/pd.c210
1 files changed, 0 insertions, 210 deletions
diff --git a/drivers/net/mlx4/pd.c b/drivers/net/mlx4/pd.c
deleted file mode 100644
index 1286b886dcea..000000000000
--- a/drivers/net/mlx4/pd.c
+++ /dev/null
@@ -1,210 +0,0 @@
1/*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#include <linux/errno.h>
35#include <linux/io-mapping.h>
36
37#include <asm/page.h>
38
39#include "mlx4.h"
40#include "icm.h"
41
42enum {
43 MLX4_NUM_RESERVED_UARS = 8
44};
45
46int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn)
47{
48 struct mlx4_priv *priv = mlx4_priv(dev);
49
50 *pdn = mlx4_bitmap_alloc(&priv->pd_bitmap);
51 if (*pdn == -1)
52 return -ENOMEM;
53
54 return 0;
55}
56EXPORT_SYMBOL_GPL(mlx4_pd_alloc);
57
58void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn)
59{
60 mlx4_bitmap_free(&mlx4_priv(dev)->pd_bitmap, pdn);
61}
62EXPORT_SYMBOL_GPL(mlx4_pd_free);
63
64int mlx4_init_pd_table(struct mlx4_dev *dev)
65{
66 struct mlx4_priv *priv = mlx4_priv(dev);
67
68 return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds,
69 (1 << 24) - 1, dev->caps.reserved_pds, 0);
70}
71
72void mlx4_cleanup_pd_table(struct mlx4_dev *dev)
73{
74 mlx4_bitmap_cleanup(&mlx4_priv(dev)->pd_bitmap);
75}
76
77
78int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar)
79{
80 uar->index = mlx4_bitmap_alloc(&mlx4_priv(dev)->uar_table.bitmap);
81 if (uar->index == -1)
82 return -ENOMEM;
83
84 uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index;
85 uar->map = NULL;
86
87 return 0;
88}
89EXPORT_SYMBOL_GPL(mlx4_uar_alloc);
90
91void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar)
92{
93 mlx4_bitmap_free(&mlx4_priv(dev)->uar_table.bitmap, uar->index);
94}
95EXPORT_SYMBOL_GPL(mlx4_uar_free);
96
97int mlx4_bf_alloc(struct mlx4_dev *dev, struct mlx4_bf *bf)
98{
99 struct mlx4_priv *priv = mlx4_priv(dev);
100 struct mlx4_uar *uar;
101 int err = 0;
102 int idx;
103
104 if (!priv->bf_mapping)
105 return -ENOMEM;
106
107 mutex_lock(&priv->bf_mutex);
108 if (!list_empty(&priv->bf_list))
109 uar = list_entry(priv->bf_list.next, struct mlx4_uar, bf_list);
110 else {
111 if (mlx4_bitmap_avail(&priv->uar_table.bitmap) < MLX4_NUM_RESERVED_UARS) {
112 err = -ENOMEM;
113 goto out;
114 }
115 uar = kmalloc(sizeof *uar, GFP_KERNEL);
116 if (!uar) {
117 err = -ENOMEM;
118 goto out;
119 }
120 err = mlx4_uar_alloc(dev, uar);
121 if (err)
122 goto free_kmalloc;
123
124 uar->map = ioremap(uar->pfn << PAGE_SHIFT, PAGE_SIZE);
125 if (!uar->map) {
126 err = -ENOMEM;
127 goto free_uar;
128 }
129
130 uar->bf_map = io_mapping_map_wc(priv->bf_mapping, uar->index << PAGE_SHIFT);
131 if (!uar->bf_map) {
132 err = -ENOMEM;
133 goto unamp_uar;
134 }
135 uar->free_bf_bmap = 0;
136 list_add(&uar->bf_list, &priv->bf_list);
137 }
138
139 bf->uar = uar;
140 idx = ffz(uar->free_bf_bmap);
141 uar->free_bf_bmap |= 1 << idx;
142 bf->uar = uar;
143 bf->offset = 0;
144 bf->buf_size = dev->caps.bf_reg_size / 2;
145 bf->reg = uar->bf_map + idx * dev->caps.bf_reg_size;
146 if (uar->free_bf_bmap == (1 << dev->caps.bf_regs_per_page) - 1)
147 list_del_init(&uar->bf_list);
148
149 goto out;
150
151unamp_uar:
152 bf->uar = NULL;
153 iounmap(uar->map);
154
155free_uar:
156 mlx4_uar_free(dev, uar);
157
158free_kmalloc:
159 kfree(uar);
160
161out:
162 mutex_unlock(&priv->bf_mutex);
163 return err;
164}
165EXPORT_SYMBOL_GPL(mlx4_bf_alloc);
166
167void mlx4_bf_free(struct mlx4_dev *dev, struct mlx4_bf *bf)
168{
169 struct mlx4_priv *priv = mlx4_priv(dev);
170 int idx;
171
172 if (!bf->uar || !bf->uar->bf_map)
173 return;
174
175 mutex_lock(&priv->bf_mutex);
176 idx = (bf->reg - bf->uar->bf_map) / dev->caps.bf_reg_size;
177 bf->uar->free_bf_bmap &= ~(1 << idx);
178 if (!bf->uar->free_bf_bmap) {
179 if (!list_empty(&bf->uar->bf_list))
180 list_del(&bf->uar->bf_list);
181
182 io_mapping_unmap(bf->uar->bf_map);
183 iounmap(bf->uar->map);
184 mlx4_uar_free(dev, bf->uar);
185 kfree(bf->uar);
186 } else if (list_empty(&bf->uar->bf_list))
187 list_add(&bf->uar->bf_list, &priv->bf_list);
188
189 mutex_unlock(&priv->bf_mutex);
190}
191EXPORT_SYMBOL_GPL(mlx4_bf_free);
192
193int mlx4_init_uar_table(struct mlx4_dev *dev)
194{
195 if (dev->caps.num_uars <= 128) {
196 mlx4_err(dev, "Only %d UAR pages (need more than 128)\n",
197 dev->caps.num_uars);
198 mlx4_err(dev, "Increase firmware log2_uar_bar_megabytes?\n");
199 return -ENODEV;
200 }
201
202 return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap,
203 dev->caps.num_uars, dev->caps.num_uars - 1,
204 max(128, dev->caps.reserved_uars), 0);
205}
206
207void mlx4_cleanup_uar_table(struct mlx4_dev *dev)
208{
209 mlx4_bitmap_cleanup(&mlx4_priv(dev)->uar_table.bitmap);
210}
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