forked from Minki/linux
0c393d4eac
Add sram dump on NIC error for debug improvement. Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com> Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
538 lines
16 KiB
C
538 lines
16 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*****************************************************************************/
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#include <net/mac80211.h>
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#include "iwl-debug.h"
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#include "iwl-io.h"
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#include "mvm.h"
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#include "fw-api-rs.h"
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/*
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* Will return 0 even if the cmd failed when RFKILL is asserted unless
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* CMD_WANT_SKB is set in cmd->flags.
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*/
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int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
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{
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int ret;
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#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
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if (WARN_ON(mvm->d3_test_active))
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return -EIO;
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#endif
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/*
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* Synchronous commands from this op-mode must hold
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* the mutex, this ensures we don't try to send two
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* (or more) synchronous commands at a time.
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*/
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if (!(cmd->flags & CMD_ASYNC))
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lockdep_assert_held(&mvm->mutex);
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ret = iwl_trans_send_cmd(mvm->trans, cmd);
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/*
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* If the caller wants the SKB, then don't hide any problems, the
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* caller might access the response buffer which will be NULL if
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* the command failed.
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*/
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if (cmd->flags & CMD_WANT_SKB)
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return ret;
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/* Silently ignore failures if RFKILL is asserted */
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if (!ret || ret == -ERFKILL)
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return 0;
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return ret;
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}
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int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id,
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u32 flags, u16 len, const void *data)
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{
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struct iwl_host_cmd cmd = {
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.id = id,
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.len = { len, },
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.data = { data, },
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.flags = flags,
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};
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return iwl_mvm_send_cmd(mvm, &cmd);
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}
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/*
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* We assume that the caller set the status to the sucess value
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*/
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int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
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u32 *status)
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{
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struct iwl_rx_packet *pkt;
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struct iwl_cmd_response *resp;
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int ret, resp_len;
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lockdep_assert_held(&mvm->mutex);
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#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
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if (WARN_ON(mvm->d3_test_active))
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return -EIO;
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#endif
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/*
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* Only synchronous commands can wait for status,
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* we use WANT_SKB so the caller can't.
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*/
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if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
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"cmd flags %x", cmd->flags))
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return -EINVAL;
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cmd->flags |= CMD_SYNC | CMD_WANT_SKB;
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ret = iwl_trans_send_cmd(mvm->trans, cmd);
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if (ret == -ERFKILL) {
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/*
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* The command failed because of RFKILL, don't update
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* the status, leave it as success and return 0.
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*/
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return 0;
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} else if (ret) {
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return ret;
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}
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pkt = cmd->resp_pkt;
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/* Can happen if RFKILL is asserted */
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if (!pkt) {
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ret = 0;
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goto out_free_resp;
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}
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if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
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ret = -EIO;
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goto out_free_resp;
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}
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resp_len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
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if (WARN_ON_ONCE(resp_len != sizeof(pkt->hdr) + sizeof(*resp))) {
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ret = -EIO;
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goto out_free_resp;
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}
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resp = (void *)pkt->data;
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*status = le32_to_cpu(resp->status);
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out_free_resp:
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iwl_free_resp(cmd);
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return ret;
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}
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/*
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* We assume that the caller set the status to the sucess value
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*/
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int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u8 id, u16 len,
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const void *data, u32 *status)
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{
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struct iwl_host_cmd cmd = {
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.id = id,
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.len = { len, },
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.data = { data, },
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};
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return iwl_mvm_send_cmd_status(mvm, &cmd, status);
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}
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#define IWL_DECLARE_RATE_INFO(r) \
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[IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
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/*
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* Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
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*/
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static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
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IWL_DECLARE_RATE_INFO(1),
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IWL_DECLARE_RATE_INFO(2),
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IWL_DECLARE_RATE_INFO(5),
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IWL_DECLARE_RATE_INFO(11),
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IWL_DECLARE_RATE_INFO(6),
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IWL_DECLARE_RATE_INFO(9),
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IWL_DECLARE_RATE_INFO(12),
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IWL_DECLARE_RATE_INFO(18),
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IWL_DECLARE_RATE_INFO(24),
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IWL_DECLARE_RATE_INFO(36),
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IWL_DECLARE_RATE_INFO(48),
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IWL_DECLARE_RATE_INFO(54),
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};
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int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
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enum ieee80211_band band)
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{
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int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
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int idx;
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int band_offset = 0;
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/* Legacy rate format, search for match in table */
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if (band == IEEE80211_BAND_5GHZ)
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band_offset = IWL_FIRST_OFDM_RATE;
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for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
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if (fw_rate_idx_to_plcp[idx] == rate)
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return idx - band_offset;
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return -1;
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}
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u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
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{
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/* Get PLCP rate for tx_cmd->rate_n_flags */
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return fw_rate_idx_to_plcp[rate_idx];
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}
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int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
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struct iwl_device_cmd *cmd)
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{
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struct iwl_rx_packet *pkt = rxb_addr(rxb);
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struct iwl_error_resp *err_resp = (void *)pkt->data;
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IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
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le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
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IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
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le16_to_cpu(err_resp->bad_cmd_seq_num),
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le32_to_cpu(err_resp->error_service));
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IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
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le64_to_cpu(err_resp->timestamp));
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return 0;
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}
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/*
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* Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
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* The parameter should also be a combination of ANT_[ABC].
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*/
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u8 first_antenna(u8 mask)
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{
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BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
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if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
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return BIT(0);
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return BIT(ffs(mask) - 1);
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}
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/*
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* Toggles between TX antennas to send the probe request on.
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* Receives the bitmask of valid TX antennas and the *index* used
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* for the last TX, and returns the next valid *index* to use.
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* In order to set it in the tx_cmd, must do BIT(idx).
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*/
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u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
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{
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u8 ind = last_idx;
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int i;
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for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
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ind = (ind + 1) % RATE_MCS_ANT_NUM;
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if (valid & BIT(ind))
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return ind;
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}
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WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
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return last_idx;
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}
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static struct {
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char *name;
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u8 num;
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} advanced_lookup[] = {
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{ "NMI_INTERRUPT_WDG", 0x34 },
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{ "SYSASSERT", 0x35 },
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{ "UCODE_VERSION_MISMATCH", 0x37 },
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{ "BAD_COMMAND", 0x38 },
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{ "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
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{ "FATAL_ERROR", 0x3D },
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{ "NMI_TRM_HW_ERR", 0x46 },
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{ "NMI_INTERRUPT_TRM", 0x4C },
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{ "NMI_INTERRUPT_BREAK_POINT", 0x54 },
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{ "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
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{ "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
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{ "NMI_INTERRUPT_HOST", 0x66 },
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{ "NMI_INTERRUPT_ACTION_PT", 0x7C },
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{ "NMI_INTERRUPT_UNKNOWN", 0x84 },
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{ "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
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{ "ADVANCED_SYSASSERT", 0 },
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};
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static const char *desc_lookup(u32 num)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
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if (advanced_lookup[i].num == num)
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return advanced_lookup[i].name;
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/* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
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return advanced_lookup[i].name;
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}
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/*
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* Note: This structure is read from the device with IO accesses,
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* and the reading already does the endian conversion. As it is
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* read with u32-sized accesses, any members with a different size
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* need to be ordered correctly though!
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*/
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struct iwl_error_event_table {
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u32 valid; /* (nonzero) valid, (0) log is empty */
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u32 error_id; /* type of error */
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u32 pc; /* program counter */
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u32 blink1; /* branch link */
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u32 blink2; /* branch link */
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u32 ilink1; /* interrupt link */
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u32 ilink2; /* interrupt link */
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u32 data1; /* error-specific data */
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u32 data2; /* error-specific data */
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u32 data3; /* error-specific data */
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u32 bcon_time; /* beacon timer */
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u32 tsf_low; /* network timestamp function timer */
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u32 tsf_hi; /* network timestamp function timer */
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u32 gp1; /* GP1 timer register */
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u32 gp2; /* GP2 timer register */
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u32 gp3; /* GP3 timer register */
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u32 ucode_ver; /* uCode version */
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u32 hw_ver; /* HW Silicon version */
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u32 brd_ver; /* HW board version */
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u32 log_pc; /* log program counter */
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u32 frame_ptr; /* frame pointer */
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u32 stack_ptr; /* stack pointer */
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u32 hcmd; /* last host command header */
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u32 isr0; /* isr status register LMPM_NIC_ISR0:
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* rxtx_flag */
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u32 isr1; /* isr status register LMPM_NIC_ISR1:
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* host_flag */
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u32 isr2; /* isr status register LMPM_NIC_ISR2:
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* enc_flag */
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u32 isr3; /* isr status register LMPM_NIC_ISR3:
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* time_flag */
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u32 isr4; /* isr status register LMPM_NIC_ISR4:
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* wico interrupt */
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u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
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u32 wait_event; /* wait event() caller address */
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u32 l2p_control; /* L2pControlField */
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u32 l2p_duration; /* L2pDurationField */
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u32 l2p_mhvalid; /* L2pMhValidBits */
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u32 l2p_addr_match; /* L2pAddrMatchStat */
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u32 lmpm_pmg_sel; /* indicate which clocks are turned on
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* (LMPM_PMG_SEL) */
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u32 u_timestamp; /* indicate when the date and time of the
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* compilation */
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u32 flow_handler; /* FH read/write pointers, RX credit */
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} __packed;
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#define ERROR_START_OFFSET (1 * sizeof(u32))
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#define ERROR_ELEM_SIZE (7 * sizeof(u32))
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void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
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{
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struct iwl_trans *trans = mvm->trans;
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struct iwl_error_event_table table;
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u32 base;
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base = mvm->error_event_table;
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if (mvm->cur_ucode == IWL_UCODE_INIT) {
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if (!base)
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base = mvm->fw->init_errlog_ptr;
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} else {
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if (!base)
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base = mvm->fw->inst_errlog_ptr;
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}
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if (base < 0x800000 || base >= 0x80C000) {
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IWL_ERR(mvm,
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"Not valid error log pointer 0x%08X for %s uCode\n",
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base,
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(mvm->cur_ucode == IWL_UCODE_INIT)
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? "Init" : "RT");
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return;
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}
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iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
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if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
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IWL_ERR(trans, "Start IWL Error Log Dump:\n");
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IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
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mvm->status, table.valid);
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}
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trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
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table.data1, table.data2, table.data3,
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table.blink1, table.blink2, table.ilink1,
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table.ilink2, table.bcon_time, table.gp1,
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table.gp2, table.gp3, table.ucode_ver,
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table.hw_ver, table.brd_ver);
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IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
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desc_lookup(table.error_id));
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IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
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IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
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IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
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IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
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IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
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IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
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IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
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IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
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IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
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IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
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IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
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IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
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IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
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IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
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IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver);
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IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
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IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
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IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
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IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
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IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
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IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
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IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
|
|
IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
|
|
IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
|
|
IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
|
|
IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
|
|
IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
|
|
IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
|
|
IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
|
|
IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
|
|
IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
|
|
IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
|
|
}
|
|
|
|
void iwl_mvm_dump_sram(struct iwl_mvm *mvm)
|
|
{
|
|
const struct fw_img *img;
|
|
int ofs, len = 0;
|
|
u8 *buf;
|
|
|
|
if (!mvm->ucode_loaded)
|
|
return;
|
|
|
|
img = &mvm->fw->img[mvm->cur_ucode];
|
|
ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
|
|
len = img->sec[IWL_UCODE_SECTION_DATA].len;
|
|
|
|
buf = kzalloc(len, GFP_KERNEL);
|
|
if (!buf)
|
|
return;
|
|
|
|
iwl_trans_read_mem_bytes(mvm->trans, ofs, buf, len);
|
|
iwl_print_hex_error(mvm->trans, buf, len);
|
|
|
|
kfree(buf);
|
|
}
|
|
|
|
/**
|
|
* iwl_mvm_send_lq_cmd() - Send link quality command
|
|
* @init: This command is sent as part of station initialization right
|
|
* after station has been added.
|
|
*
|
|
* The link quality command is sent as the last step of station creation.
|
|
* This is the special case in which init is set and we call a callback in
|
|
* this case to clear the state indicating that station creation is in
|
|
* progress.
|
|
*/
|
|
int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq,
|
|
u8 flags, bool init)
|
|
{
|
|
struct iwl_host_cmd cmd = {
|
|
.id = LQ_CMD,
|
|
.len = { sizeof(struct iwl_lq_cmd), },
|
|
.flags = flags,
|
|
.data = { lq, },
|
|
};
|
|
|
|
if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
|
|
return -EINVAL;
|
|
|
|
if (WARN_ON(init && (cmd.flags & CMD_ASYNC)))
|
|
return -EINVAL;
|
|
|
|
return iwl_mvm_send_cmd(mvm, &cmd);
|
|
}
|
|
|
|
/**
|
|
* iwl_mvm_update_smps - Get a requst to change the SMPS mode
|
|
* @req_type: The part of the driver who call for a change.
|
|
* @smps_requests: The request to change the SMPS mode.
|
|
*
|
|
* Get a requst to change the SMPS mode,
|
|
* and change it according to all other requests in the driver.
|
|
*/
|
|
void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
|
|
enum iwl_mvm_smps_type_request req_type,
|
|
enum ieee80211_smps_mode smps_request)
|
|
{
|
|
struct iwl_mvm_vif *mvmvif;
|
|
enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
|
|
int i;
|
|
|
|
lockdep_assert_held(&mvm->mutex);
|
|
mvmvif = iwl_mvm_vif_from_mac80211(vif);
|
|
mvmvif->smps_requests[req_type] = smps_request;
|
|
for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
|
|
if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
|
|
smps_mode = IEEE80211_SMPS_STATIC;
|
|
break;
|
|
}
|
|
if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
|
|
smps_mode = IEEE80211_SMPS_DYNAMIC;
|
|
}
|
|
|
|
ieee80211_request_smps(vif, smps_mode);
|
|
}
|