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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) 2012 - 2014 Intel Corporation. All rights reserved.
*
* 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 <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* 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 <net/mac80211.h>
#include "iwl-debug.h"
#include "iwl-io.h"
#include "mvm.h"
#include "fw-api-rs.h"
/*
* Will return 0 even if the cmd failed when RFKILL is asserted unless
* CMD_WANT_SKB is set in cmd->flags.
*/
int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
{
int ret;
#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
if (WARN_ON(mvm->d3_test_active))
return -EIO;
#endif
/*
* Synchronous commands from this op-mode must hold
* the mutex, this ensures we don't try to send two
* (or more) synchronous commands at a time.
*/
if (!(cmd->flags & CMD_ASYNC))
lockdep_assert_held(&mvm->mutex);
ret = iwl_trans_send_cmd(mvm->trans, cmd);
/*
* If the caller wants the SKB, then don't hide any problems, the
* caller might access the response buffer which will be NULL if
* the command failed.
*/
if (cmd->flags & CMD_WANT_SKB)
return ret;
/* Silently ignore failures if RFKILL is asserted */
if (!ret || ret == -ERFKILL)
return 0;
return ret;
}
int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id,
u32 flags, u16 len, const void *data)
{
struct iwl_host_cmd cmd = {
.id = id,
.len = { len, },
.data = { data, },
.flags = flags,
};
return iwl_mvm_send_cmd(mvm, &cmd);
}
/*
* We assume that the caller set the status to the sucess value
*/
int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
u32 *status)
{
struct iwl_rx_packet *pkt;
struct iwl_cmd_response *resp;
int ret, resp_len;
lockdep_assert_held(&mvm->mutex);
#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
if (WARN_ON(mvm->d3_test_active))
return -EIO;
#endif
/*
* Only synchronous commands can wait for status,
* we use WANT_SKB so the caller can't.
*/
if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
"cmd flags %x", cmd->flags))
return -EINVAL;
cmd->flags |= CMD_SYNC | CMD_WANT_SKB;
ret = iwl_trans_send_cmd(mvm->trans, cmd);
if (ret == -ERFKILL) {
/*
* The command failed because of RFKILL, don't update
* the status, leave it as success and return 0.
*/
return 0;
} else if (ret) {
return ret;
}
pkt = cmd->resp_pkt;
/* Can happen if RFKILL is asserted */
if (!pkt) {
ret = 0;
goto out_free_resp;
}
if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
ret = -EIO;
goto out_free_resp;
}
resp_len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
if (WARN_ON_ONCE(resp_len != sizeof(pkt->hdr) + sizeof(*resp))) {
ret = -EIO;
goto out_free_resp;
}
resp = (void *)pkt->data;
*status = le32_to_cpu(resp->status);
out_free_resp:
iwl_free_resp(cmd);
return ret;
}
/*
* We assume that the caller set the status to the sucess value
*/
int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u8 id, u16 len,
const void *data, u32 *status)
{
struct iwl_host_cmd cmd = {
.id = id,
.len = { len, },
.data = { data, },
};
return iwl_mvm_send_cmd_status(mvm, &cmd, status);
}
#define IWL_DECLARE_RATE_INFO(r) \
[IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
/*
* Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
*/
static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
IWL_DECLARE_RATE_INFO(1),
IWL_DECLARE_RATE_INFO(2),
IWL_DECLARE_RATE_INFO(5),
IWL_DECLARE_RATE_INFO(11),
IWL_DECLARE_RATE_INFO(6),
IWL_DECLARE_RATE_INFO(9),
IWL_DECLARE_RATE_INFO(12),
IWL_DECLARE_RATE_INFO(18),
IWL_DECLARE_RATE_INFO(24),
IWL_DECLARE_RATE_INFO(36),
IWL_DECLARE_RATE_INFO(48),
IWL_DECLARE_RATE_INFO(54),
};
int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
enum ieee80211_band band)
{
int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
int idx;
int band_offset = 0;
/* Legacy rate format, search for match in table */
if (band == IEEE80211_BAND_5GHZ)
band_offset = IWL_FIRST_OFDM_RATE;
for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
if (fw_rate_idx_to_plcp[idx] == rate)
return idx - band_offset;
return -1;
}
u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
{
/* Get PLCP rate for tx_cmd->rate_n_flags */
return fw_rate_idx_to_plcp[rate_idx];
}
int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_error_resp *err_resp = (void *)pkt->data;
IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
le16_to_cpu(err_resp->bad_cmd_seq_num),
le32_to_cpu(err_resp->error_service));
IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
le64_to_cpu(err_resp->timestamp));
return 0;
}
/*
* Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
* The parameter should also be a combination of ANT_[ABC].
*/
u8 first_antenna(u8 mask)
{
BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
return BIT(0);
return BIT(ffs(mask) - 1);
}
/*
* Toggles between TX antennas to send the probe request on.
* Receives the bitmask of valid TX antennas and the *index* used
* for the last TX, and returns the next valid *index* to use.
* In order to set it in the tx_cmd, must do BIT(idx).
*/
u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
{
u8 ind = last_idx;
int i;
for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
ind = (ind + 1) % RATE_MCS_ANT_NUM;
if (valid & BIT(ind))
return ind;
}
WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid
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