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225c7b1f RD |
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 | ||
225c7b1f | 34 | #include <linux/errno.h> |
ee40fa06 | 35 | #include <linux/export.h> |
c1b43dca | 36 | #include <linux/io-mapping.h> |
225c7b1f RD |
37 | |
38 | #include <asm/page.h> | |
39 | ||
40 | #include "mlx4.h" | |
41 | #include "icm.h" | |
42 | ||
9ace5e01 EC |
43 | enum { |
44 | MLX4_NUM_RESERVED_UARS = 8 | |
45 | }; | |
46 | ||
225c7b1f RD |
47 | int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn) |
48 | { | |
49 | struct mlx4_priv *priv = mlx4_priv(dev); | |
50 | ||
51 | *pdn = mlx4_bitmap_alloc(&priv->pd_bitmap); | |
52 | if (*pdn == -1) | |
53 | return -ENOMEM; | |
eb41049f | 54 | |
225c7b1f RD |
55 | return 0; |
56 | } | |
57 | EXPORT_SYMBOL_GPL(mlx4_pd_alloc); | |
58 | ||
59 | void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn) | |
60 | { | |
7c6d74d2 | 61 | mlx4_bitmap_free(&mlx4_priv(dev)->pd_bitmap, pdn, MLX4_USE_RR); |
225c7b1f RD |
62 | } |
63 | EXPORT_SYMBOL_GPL(mlx4_pd_free); | |
64 | ||
ba062d52 | 65 | int __mlx4_xrcd_alloc(struct mlx4_dev *dev, u32 *xrcdn) |
012a8ff5 SH |
66 | { |
67 | struct mlx4_priv *priv = mlx4_priv(dev); | |
68 | ||
69 | *xrcdn = mlx4_bitmap_alloc(&priv->xrcd_bitmap); | |
70 | if (*xrcdn == -1) | |
71 | return -ENOMEM; | |
72 | ||
73 | return 0; | |
74 | } | |
ba062d52 JM |
75 | |
76 | int mlx4_xrcd_alloc(struct mlx4_dev *dev, u32 *xrcdn) | |
77 | { | |
78 | u64 out_param; | |
79 | int err; | |
80 | ||
81 | if (mlx4_is_mfunc(dev)) { | |
82 | err = mlx4_cmd_imm(dev, 0, &out_param, | |
83 | RES_XRCD, RES_OP_RESERVE, | |
84 | MLX4_CMD_ALLOC_RES, | |
85 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); | |
86 | if (err) | |
87 | return err; | |
88 | ||
89 | *xrcdn = get_param_l(&out_param); | |
90 | return 0; | |
91 | } | |
92 | return __mlx4_xrcd_alloc(dev, xrcdn); | |
93 | } | |
012a8ff5 SH |
94 | EXPORT_SYMBOL_GPL(mlx4_xrcd_alloc); |
95 | ||
ba062d52 | 96 | void __mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn) |
012a8ff5 | 97 | { |
7c6d74d2 | 98 | mlx4_bitmap_free(&mlx4_priv(dev)->xrcd_bitmap, xrcdn, MLX4_USE_RR); |
012a8ff5 | 99 | } |
ba062d52 JM |
100 | |
101 | void mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn) | |
102 | { | |
e7dbeba8 | 103 | u64 in_param = 0; |
ba062d52 JM |
104 | int err; |
105 | ||
106 | if (mlx4_is_mfunc(dev)) { | |
107 | set_param_l(&in_param, xrcdn); | |
108 | err = mlx4_cmd(dev, in_param, RES_XRCD, | |
109 | RES_OP_RESERVE, MLX4_CMD_FREE_RES, | |
110 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); | |
111 | if (err) | |
112 | mlx4_warn(dev, "Failed to release xrcdn %d\n", xrcdn); | |
113 | } else | |
114 | __mlx4_xrcd_free(dev, xrcdn); | |
115 | } | |
012a8ff5 SH |
116 | EXPORT_SYMBOL_GPL(mlx4_xrcd_free); |
117 | ||
3d73c288 | 118 | int mlx4_init_pd_table(struct mlx4_dev *dev) |
225c7b1f RD |
119 | { |
120 | struct mlx4_priv *priv = mlx4_priv(dev); | |
121 | ||
122 | return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds, | |
f5311ac1 JM |
123 | (1 << NOT_MASKED_PD_BITS) - 1, |
124 | dev->caps.reserved_pds, 0); | |
225c7b1f RD |
125 | } |
126 | ||
127 | void mlx4_cleanup_pd_table(struct mlx4_dev *dev) | |
128 | { | |
129 | mlx4_bitmap_cleanup(&mlx4_priv(dev)->pd_bitmap); | |
130 | } | |
131 | ||
012a8ff5 SH |
132 | int mlx4_init_xrcd_table(struct mlx4_dev *dev) |
133 | { | |
134 | struct mlx4_priv *priv = mlx4_priv(dev); | |
135 | ||
136 | return mlx4_bitmap_init(&priv->xrcd_bitmap, (1 << 16), | |
137 | (1 << 16) - 1, dev->caps.reserved_xrcds + 1, 0); | |
138 | } | |
139 | ||
140 | void mlx4_cleanup_xrcd_table(struct mlx4_dev *dev) | |
141 | { | |
142 | mlx4_bitmap_cleanup(&mlx4_priv(dev)->xrcd_bitmap); | |
143 | } | |
225c7b1f RD |
144 | |
145 | int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar) | |
146 | { | |
f5311ac1 JM |
147 | int offset; |
148 | ||
225c7b1f RD |
149 | uar->index = mlx4_bitmap_alloc(&mlx4_priv(dev)->uar_table.bitmap); |
150 | if (uar->index == -1) | |
151 | return -ENOMEM; | |
152 | ||
f5311ac1 JM |
153 | if (mlx4_is_slave(dev)) |
154 | offset = uar->index % ((int) pci_resource_len(dev->pdev, 2) / | |
155 | dev->caps.uar_page_size); | |
156 | else | |
157 | offset = uar->index; | |
158 | uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + offset; | |
c1b43dca | 159 | uar->map = NULL; |
225c7b1f RD |
160 | return 0; |
161 | } | |
162 | EXPORT_SYMBOL_GPL(mlx4_uar_alloc); | |
163 | ||
164 | void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar) | |
165 | { | |
7c6d74d2 | 166 | mlx4_bitmap_free(&mlx4_priv(dev)->uar_table.bitmap, uar->index, MLX4_USE_RR); |
225c7b1f RD |
167 | } |
168 | EXPORT_SYMBOL_GPL(mlx4_uar_free); | |
169 | ||
163561a4 | 170 | int mlx4_bf_alloc(struct mlx4_dev *dev, struct mlx4_bf *bf, int node) |
c1b43dca EC |
171 | { |
172 | struct mlx4_priv *priv = mlx4_priv(dev); | |
173 | struct mlx4_uar *uar; | |
174 | int err = 0; | |
175 | int idx; | |
176 | ||
177 | if (!priv->bf_mapping) | |
178 | return -ENOMEM; | |
179 | ||
180 | mutex_lock(&priv->bf_mutex); | |
181 | if (!list_empty(&priv->bf_list)) | |
182 | uar = list_entry(priv->bf_list.next, struct mlx4_uar, bf_list); | |
183 | else { | |
9ace5e01 EC |
184 | if (mlx4_bitmap_avail(&priv->uar_table.bitmap) < MLX4_NUM_RESERVED_UARS) { |
185 | err = -ENOMEM; | |
186 | goto out; | |
187 | } | |
163561a4 | 188 | uar = kmalloc_node(sizeof(*uar), GFP_KERNEL, node); |
c1b43dca | 189 | if (!uar) { |
163561a4 EE |
190 | uar = kmalloc(sizeof(*uar), GFP_KERNEL); |
191 | if (!uar) { | |
192 | err = -ENOMEM; | |
193 | goto out; | |
194 | } | |
c1b43dca EC |
195 | } |
196 | err = mlx4_uar_alloc(dev, uar); | |
197 | if (err) | |
198 | goto free_kmalloc; | |
199 | ||
200 | uar->map = ioremap(uar->pfn << PAGE_SHIFT, PAGE_SIZE); | |
201 | if (!uar->map) { | |
202 | err = -ENOMEM; | |
203 | goto free_uar; | |
204 | } | |
205 | ||
206 | uar->bf_map = io_mapping_map_wc(priv->bf_mapping, uar->index << PAGE_SHIFT); | |
207 | if (!uar->bf_map) { | |
208 | err = -ENOMEM; | |
209 | goto unamp_uar; | |
210 | } | |
211 | uar->free_bf_bmap = 0; | |
212 | list_add(&uar->bf_list, &priv->bf_list); | |
213 | } | |
214 | ||
215 | bf->uar = uar; | |
216 | idx = ffz(uar->free_bf_bmap); | |
217 | uar->free_bf_bmap |= 1 << idx; | |
218 | bf->uar = uar; | |
219 | bf->offset = 0; | |
220 | bf->buf_size = dev->caps.bf_reg_size / 2; | |
221 | bf->reg = uar->bf_map + idx * dev->caps.bf_reg_size; | |
222 | if (uar->free_bf_bmap == (1 << dev->caps.bf_regs_per_page) - 1) | |
223 | list_del_init(&uar->bf_list); | |
224 | ||
225 | goto out; | |
226 | ||
227 | unamp_uar: | |
228 | bf->uar = NULL; | |
229 | iounmap(uar->map); | |
230 | ||
231 | free_uar: | |
232 | mlx4_uar_free(dev, uar); | |
233 | ||
234 | free_kmalloc: | |
235 | kfree(uar); | |
236 | ||
237 | out: | |
238 | mutex_unlock(&priv->bf_mutex); | |
239 | return err; | |
240 | } | |
241 | EXPORT_SYMBOL_GPL(mlx4_bf_alloc); | |
242 | ||
243 | void mlx4_bf_free(struct mlx4_dev *dev, struct mlx4_bf *bf) | |
244 | { | |
245 | struct mlx4_priv *priv = mlx4_priv(dev); | |
246 | int idx; | |
247 | ||
248 | if (!bf->uar || !bf->uar->bf_map) | |
249 | return; | |
250 | ||
251 | mutex_lock(&priv->bf_mutex); | |
252 | idx = (bf->reg - bf->uar->bf_map) / dev->caps.bf_reg_size; | |
253 | bf->uar->free_bf_bmap &= ~(1 << idx); | |
254 | if (!bf->uar->free_bf_bmap) { | |
255 | if (!list_empty(&bf->uar->bf_list)) | |
256 | list_del(&bf->uar->bf_list); | |
257 | ||
258 | io_mapping_unmap(bf->uar->bf_map); | |
259 | iounmap(bf->uar->map); | |
260 | mlx4_uar_free(dev, bf->uar); | |
261 | kfree(bf->uar); | |
262 | } else if (list_empty(&bf->uar->bf_list)) | |
263 | list_add(&bf->uar->bf_list, &priv->bf_list); | |
264 | ||
265 | mutex_unlock(&priv->bf_mutex); | |
266 | } | |
267 | EXPORT_SYMBOL_GPL(mlx4_bf_free); | |
268 | ||
225c7b1f RD |
269 | int mlx4_init_uar_table(struct mlx4_dev *dev) |
270 | { | |
76442640 RD |
271 | if (dev->caps.num_uars <= 128) { |
272 | mlx4_err(dev, "Only %d UAR pages (need more than 128)\n", | |
273 | dev->caps.num_uars); | |
274 | mlx4_err(dev, "Increase firmware log2_uar_bar_megabytes?\n"); | |
275 | return -ENODEV; | |
276 | } | |
277 | ||
225c7b1f RD |
278 | return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap, |
279 | dev->caps.num_uars, dev->caps.num_uars - 1, | |
f5311ac1 | 280 | dev->caps.reserved_uars, 0); |
225c7b1f RD |
281 | } |
282 | ||
283 | void mlx4_cleanup_uar_table(struct mlx4_dev *dev) | |
284 | { | |
285 | mlx4_bitmap_cleanup(&mlx4_priv(dev)->uar_table.bitmap); | |
286 | } |