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/******************************************************************************
*
* 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"
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);
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