1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/******************************************************************************
*
* This file is provided under a dual BSD/GPLv2 license. When using or
* redistributing this file, you may do so under either license.
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2015 Intel Mobile Communications GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <linuxwifi@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2015 Intel Mobile Communications GmbH
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/bsearch.h>
#include "iwl-trans.h"
#include "iwl-drv.h"
#include "iwl-fh.h"
struct iwl_trans *iwl_trans_alloc(unsigned int priv_size,
struct device *dev,
const struct iwl_cfg *cfg,
const struct iwl_trans_ops *ops,
size_t dev_cmd_headroom)
{
struct iwl_trans *trans;
#ifdef CONFIG_LOCKDEP
static struct lock_class_key __key;
#endif
trans = kzalloc(sizeof(*trans) + priv_size, GFP_KERNEL);
if (!trans)
return NULL;
#ifdef CONFIG_LOCKDEP
lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map",
&__key, 0);
#endif
trans->dev = dev;
trans->cfg = cfg;
trans->ops = ops;
trans->dev_cmd_headroom = dev_cmd_headroom;
trans->num_rx_queues = 1;
snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name),
"iwl_cmd_pool:%s", dev_name(trans->dev));
trans->dev_cmd_pool =
kmem_cache_create(trans->dev_cmd_pool_name,
sizeof(struct iwl_device_cmd)
+ trans->dev_cmd_headroom,
sizeof(void *),
SLAB_HWCACHE_ALIGN,
NULL);
if (!trans->dev_cmd_pool)
goto free;
return trans;
free:
kfree(trans);
return NULL;
}
void iwl_trans_free(struct iwl_trans *trans)
{
kmem_cache_destroy(trans->dev_cmd_pool);
kfree(trans);
}
int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd)
{
int ret;
if (unlikely(!(cmd->flags & CMD_SEND_IN_RFKILL) &&
test_bit(STATUS_RFKILL, &trans->status)))
return -ERFKILL;
if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status)))
return -EIO;
if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) {
IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
return -EIO;
}
if (WARN_ON((cmd->flags & CMD_WANT_ASYNC_CALLBACK) &&
!(cmd->flags & CMD_ASYNC)))
return -EINVAL;
if (!(cmd->flags & CMD_ASYNC))
lock_map_acquire_read(&trans->sync_cmd_lockdep_map);
ret = trans->ops->send_cmd(trans, cmd);
if (!(cmd->flags & CMD_ASYNC))
lock_map_release(&trans->sync_cmd_lockdep_map);
return ret;
}
IWL_EXPORT_SYMBOL(iwl_trans_send_cmd);
/* Comparator for struct iwl_hcmd_names.
* Used in the binary search over a list of host commands.
*
* @key: command_id that we're looking for.
* @elt: struct iwl_hcmd_names candidate for match.
*
* @return 0 iff equal.
*/
static int iwl_hcmd_names_cmp(const void *key, const void *elt)
{
const struct iwl_hcmd_names *name = elt;
u8 cmd1 = *(u8 *)key;
u8 cmd2 = name->cmd_id;
return (cmd1 - cmd2);
}
const char *iwl_get_cmd_string(struct iwl_trans *trans, u32 id)
{
u8 grp, cmd;
struct iwl_hcmd_names *ret;
const struct iwl_hcmd_arr *arr;
size_t size = sizeof(struct iwl_hcmd_names);
grp = iwl_cmd_groupid(id);
cmd = iwl_cmd_opcode(id);
if (!trans->command_groups || grp >= trans->command_groups_size ||
!trans->command_groups[grp].arr)
return "UNKNOWN";
arr = &trans->command_groups[grp];
ret = bsearch(&cmd, arr->arr, arr->size, size, iwl_hcmd_names_cmp);
if (!ret)
return "UNKNOWN";
return ret->cmd_name;
}
IWL_EXPORT_SYMBOL(iwl_get_cmd_string);
int iwl_cmd_groups_verify_sorted(const struct iwl_trans_config *trans)
{
int i, j;
const struct iwl_hcmd_arr *arr;
for (i = 0; i < trans->command_groups_size; i++) {
arr = &trans->command_groups[i];
if (!arr->arr)
continue;
for (j = 0; j < arr->size - 1; j++)
if (arr->arr[j].cmd_id > arr->arr[j + 1].cmd_id)
return -1;
}
return 0;
}
IWL_EXPORT_SYMBOL(iwl_cmd_groups_verify_sorted);
|
