2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
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.
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
34 #include <linux/init.h>
35 #include <linux/errno.h>
36 #include <linux/export.h>
37 #include <linux/io-mapping.h>
45 MLX4_NUM_RESERVED_UARS
= 8
48 int mlx4_pd_alloc(struct mlx4_dev
*dev
, u32
*pdn
)
50 struct mlx4_priv
*priv
= mlx4_priv(dev
);
52 *pdn
= mlx4_bitmap_alloc(&priv
->pd_bitmap
);
58 EXPORT_SYMBOL_GPL(mlx4_pd_alloc
);
60 void mlx4_pd_free(struct mlx4_dev
*dev
, u32 pdn
)
62 mlx4_bitmap_free(&mlx4_priv(dev
)->pd_bitmap
, pdn
);
64 EXPORT_SYMBOL_GPL(mlx4_pd_free
);
66 int __mlx4_xrcd_alloc(struct mlx4_dev
*dev
, u32
*xrcdn
)
68 struct mlx4_priv
*priv
= mlx4_priv(dev
);
70 *xrcdn
= mlx4_bitmap_alloc(&priv
->xrcd_bitmap
);
77 int mlx4_xrcd_alloc(struct mlx4_dev
*dev
, u32
*xrcdn
)
82 if (mlx4_is_mfunc(dev
)) {
83 err
= mlx4_cmd_imm(dev
, 0, &out_param
,
84 RES_XRCD
, RES_OP_RESERVE
,
86 MLX4_CMD_TIME_CLASS_A
, MLX4_CMD_WRAPPED
);
90 *xrcdn
= get_param_l(&out_param
);
93 return __mlx4_xrcd_alloc(dev
, xrcdn
);
95 EXPORT_SYMBOL_GPL(mlx4_xrcd_alloc
);
97 void __mlx4_xrcd_free(struct mlx4_dev
*dev
, u32 xrcdn
)
99 mlx4_bitmap_free(&mlx4_priv(dev
)->xrcd_bitmap
, xrcdn
);
102 void mlx4_xrcd_free(struct mlx4_dev
*dev
, u32 xrcdn
)
107 if (mlx4_is_mfunc(dev
)) {
108 set_param_l(&in_param
, xrcdn
);
109 err
= mlx4_cmd(dev
, in_param
, RES_XRCD
,
110 RES_OP_RESERVE
, MLX4_CMD_FREE_RES
,
111 MLX4_CMD_TIME_CLASS_A
, MLX4_CMD_WRAPPED
);
113 mlx4_warn(dev
, "Failed to release xrcdn %d\n", xrcdn
);
115 __mlx4_xrcd_free(dev
, xrcdn
);
117 EXPORT_SYMBOL_GPL(mlx4_xrcd_free
);
119 int mlx4_init_pd_table(struct mlx4_dev
*dev
)
121 struct mlx4_priv
*priv
= mlx4_priv(dev
);
123 return mlx4_bitmap_init(&priv
->pd_bitmap
, dev
->caps
.num_pds
,
124 (1 << NOT_MASKED_PD_BITS
) - 1,
125 dev
->caps
.reserved_pds
, 0);
128 void mlx4_cleanup_pd_table(struct mlx4_dev
*dev
)
130 mlx4_bitmap_cleanup(&mlx4_priv(dev
)->pd_bitmap
);
133 int mlx4_init_xrcd_table(struct mlx4_dev
*dev
)
135 struct mlx4_priv
*priv
= mlx4_priv(dev
);
137 return mlx4_bitmap_init(&priv
->xrcd_bitmap
, (1 << 16),
138 (1 << 16) - 1, dev
->caps
.reserved_xrcds
+ 1, 0);
141 void mlx4_cleanup_xrcd_table(struct mlx4_dev
*dev
)
143 mlx4_bitmap_cleanup(&mlx4_priv(dev
)->xrcd_bitmap
);
146 int mlx4_uar_alloc(struct mlx4_dev
*dev
, struct mlx4_uar
*uar
)
150 uar
->index
= mlx4_bitmap_alloc(&mlx4_priv(dev
)->uar_table
.bitmap
);
151 if (uar
->index
== -1)
154 if (mlx4_is_slave(dev
))
155 offset
= uar
->index
% ((int) pci_resource_len(dev
->pdev
, 2) /
156 dev
->caps
.uar_page_size
);
159 uar
->pfn
= (pci_resource_start(dev
->pdev
, 2) >> PAGE_SHIFT
) + offset
;
163 EXPORT_SYMBOL_GPL(mlx4_uar_alloc
);
165 void mlx4_uar_free(struct mlx4_dev
*dev
, struct mlx4_uar
*uar
)
167 mlx4_bitmap_free(&mlx4_priv(dev
)->uar_table
.bitmap
, uar
->index
);
169 EXPORT_SYMBOL_GPL(mlx4_uar_free
);
171 int mlx4_bf_alloc(struct mlx4_dev
*dev
, struct mlx4_bf
*bf
)
173 struct mlx4_priv
*priv
= mlx4_priv(dev
);
174 struct mlx4_uar
*uar
;
178 if (!priv
->bf_mapping
)
181 mutex_lock(&priv
->bf_mutex
);
182 if (!list_empty(&priv
->bf_list
))
183 uar
= list_entry(priv
->bf_list
.next
, struct mlx4_uar
, bf_list
);
185 if (mlx4_bitmap_avail(&priv
->uar_table
.bitmap
) < MLX4_NUM_RESERVED_UARS
) {
189 uar
= kmalloc(sizeof *uar
, GFP_KERNEL
);
194 err
= mlx4_uar_alloc(dev
, uar
);
198 uar
->map
= ioremap(uar
->pfn
<< PAGE_SHIFT
, PAGE_SIZE
);
204 uar
->bf_map
= io_mapping_map_wc(priv
->bf_mapping
, uar
->index
<< PAGE_SHIFT
);
209 uar
->free_bf_bmap
= 0;
210 list_add(&uar
->bf_list
, &priv
->bf_list
);
214 idx
= ffz(uar
->free_bf_bmap
);
215 uar
->free_bf_bmap
|= 1 << idx
;
218 bf
->buf_size
= dev
->caps
.bf_reg_size
/ 2;
219 bf
->reg
= uar
->bf_map
+ idx
* dev
->caps
.bf_reg_size
;
220 if (uar
->free_bf_bmap
== (1 << dev
->caps
.bf_regs_per_page
) - 1)
221 list_del_init(&uar
->bf_list
);
230 mlx4_uar_free(dev
, uar
);
236 mutex_unlock(&priv
->bf_mutex
);
239 EXPORT_SYMBOL_GPL(mlx4_bf_alloc
);
241 void mlx4_bf_free(struct mlx4_dev
*dev
, struct mlx4_bf
*bf
)
243 struct mlx4_priv
*priv
= mlx4_priv(dev
);
246 if (!bf
->uar
|| !bf
->uar
->bf_map
)
249 mutex_lock(&priv
->bf_mutex
);
250 idx
= (bf
->reg
- bf
->uar
->bf_map
) / dev
->caps
.bf_reg_size
;
251 bf
->uar
->free_bf_bmap
&= ~(1 << idx
);
252 if (!bf
->uar
->free_bf_bmap
) {
253 if (!list_empty(&bf
->uar
->bf_list
))
254 list_del(&bf
->uar
->bf_list
);
256 io_mapping_unmap(bf
->uar
->bf_map
);
257 iounmap(bf
->uar
->map
);
258 mlx4_uar_free(dev
, bf
->uar
);
260 } else if (list_empty(&bf
->uar
->bf_list
))
261 list_add(&bf
->uar
->bf_list
, &priv
->bf_list
);
263 mutex_unlock(&priv
->bf_mutex
);
265 EXPORT_SYMBOL_GPL(mlx4_bf_free
);
267 int mlx4_init_uar_table(struct mlx4_dev
*dev
)
269 if (dev
->caps
.num_uars
<= 128) {
270 mlx4_err(dev
, "Only %d UAR pages (need more than 128)\n",
272 mlx4_err(dev
, "Increase firmware log2_uar_bar_megabytes?\n");
276 return mlx4_bitmap_init(&mlx4_priv(dev
)->uar_table
.bitmap
,
277 dev
->caps
.num_uars
, dev
->caps
.num_uars
- 1,
278 dev
->caps
.reserved_uars
, 0);
281 void mlx4_cleanup_uar_table(struct mlx4_dev
*dev
)
283 mlx4_bitmap_cleanup(&mlx4_priv(dev
)->uar_table
.bitmap
);
This page took 0.036826 seconds and 5 git commands to generate.