/****************************************************************************** * * 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 * 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 #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 = iwl_rx_packet_payload_len(pkt); if (WARN_ON_ONCE(resp_len != 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); return last_idx; } static const struct { const char *name; u8 num; } advanced_lookup[] = { { "NMI_INTERRUPT_WDG", 0x34 }, { "SYSASSERT", 0x35 }, { "UCODE_VERSION_MISMATCH", 0x37 }, { "BAD_COMMAND", 0x38 }, { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C }, { "FATAL_ERROR", 0x3D }, { "NMI_TRM_HW_ERR", 0x46 }, { "NMI_INTERRUPT_TRM", 0x4C }, { "NMI_INTERRUPT_BREAK_POINT", 0x54 }, { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C }, { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 }, { "NMI_INTERRUPT_HOST", 0x66 }, { "NMI_INTERRUPT_ACTION_PT", 0x7C }, { "NMI_INTERRUPT_UNKNOWN", 0x84 }, { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 }, { "ADVANCED_SYSASSERT", 0 }, }; static const char *desc_lookup(u32 num) { int i; for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++) if (advanced_lookup[i].num == num) return advanced_lookup[i].name; /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */ return advanced_lookup[i].name; } /* * Note: This structure is read from the device with IO accesses, * and the reading already does the endian conversion. As it is * read with u32-sized accesses, any members with a different size * need to be ordered correctly though! */ struct iwl_error_event_table { u32 valid; /* (nonzero) valid, (0) log is empty */ u32 error_id; /* type of error */ u32 pc; /* program counter */ u32 blink1; /* branch link */ u32 blink2; /* branch link */ u32 ilink1; /* interrupt link */ u32 ilink2; /* interrupt link */ u32 data1; /* error-specific data */ u32 data2; /* error-specific data */ u32 data3; /* error-specific data */ u32 bcon_time; /* beacon timer */ u32 tsf_low; /* network timestamp function timer */ u32 tsf_hi; /* network timestamp function timer */ u32 gp1; /* GP1 timer register */ u32 gp2; /* GP2 timer register */ u32 gp3; /* GP3 timer register */ u32 ucode_ver; /* uCode version */ u32 hw_ver; /* HW Silicon version */ u32 brd_ver; /* HW board version */ u32 log_pc; /* log program counter */ u32 frame_ptr; /* frame pointer */ u32 stack_ptr; /* stack pointer */ u32 hcmd; /* last host command header */ u32 isr0; /* isr status register LMPM_NIC_ISR0: * rxtx_flag */ u32 isr1; /* isr status register LMPM_NIC_ISR1: * host_flag */ u32 isr2; /* isr status register LMPM_NIC_ISR2: * enc_flag */ u32 isr3; /* isr status register LMPM_NIC_ISR3: * time_flag */ u32 isr4; /* isr status register LMPM_NIC_ISR4: * wico interrupt */ u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ u32 wait_event; /* wait event() caller address */ u32 l2p_control; /* L2pControlField */ u32 l2p_duration; /* L2pDurationField */ u32 l2p_mhvalid; /* L2pMhValidBits */ u32 l2p_addr_match; /* L2pAddrMatchStat */ u32 lmpm_pmg_sel; /* indicate which clocks are turned on * (LMPM_PMG_SEL) */ u32 u_timestamp; /* indicate when the date and time of the * compilation */ u32 flow_handler; /* FH read/write pointers, RX credit */ } __packed; /* * UMAC error struct - relevant starting from family 8000 chip. * Note: This structure is read from the device with IO accesses, * and the reading already does the endian conversion. As it is * read with u32-sized accesses, any members with a different size * need to be ordered correctly though! */ struct iwl_umac_error_event_table { u32 valid; /* (nonzero) valid, (0) log is empty */ u32 error_id; /* type of error */ u32 pc; /* program counter */ u32 blink1; /* branch link */ u32 blink2; /* branch link */ u32 ilink1; /* interrupt link */ u32 ilink2; /* interrupt link */ u32 data1; /* error-specific data */ u32 data2; /* error-specific data */ u32 line; /* source code line of error */ u32 umac_ver; /* umac version */ } __packed; #define ERROR_START_OFFSET (1 * sizeof(u32)) #define ERROR_ELEM_SIZE (7 * sizeof(u32)) static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) { struct iwl_trans *trans = mvm->trans; struct iwl_umac_error_event_table table; u32 base; base = mvm->umac_error_event_table; if (base < 0x800000 || base >= 0x80C000) { IWL_ERR(mvm, "Not valid error log pointer 0x%08X for %s uCode\n", base, (mvm->cur_ucode == IWL_UCODE_INIT) ? "Init" : "RT"); return; } iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { IWL_ERR(trans, "Start IWL Error Log Dump:\n"); IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", mvm->status, table.valid); } IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, desc_lookup(table.error_id)); IWL_ERR(mvm, "0x%08X | umac uPc\n", table.pc); IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); IWL_ERR(mvm, "0x%08X | umac version\n", table.umac_ver); } void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) { struct iwl_trans *trans = mvm->trans; struct iwl_error_event_table table; u32 base; base = mvm->error_event_table; if (mvm->cur_ucode == IWL_UCODE_INIT) { if (!base) base = mvm->fw->init_errlog_ptr; } else { if (!base) base = mvm->fw->inst_errlog_ptr; } if (base < 0x800000) { IWL_ERR(mvm, "Not valid error log pointer 0x%08X for %s uCode\n", base, (mvm->cur_ucode == IWL_UCODE_INIT) ? "Init" : "RT"); return; } iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { IWL_ERR(trans, "Start IWL Error Log Dump:\n"); IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", mvm->status, table.valid); } IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low, table.data1, table.data2, table.data3, table.blink1, table.blink2, table.ilink1, table.ilink2, table.bcon_time, table.gp1, table.gp2, table.gp3, table.ucode_ver, table.hw_ver, table.brd_ver); IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, desc_lookup(table.error_id)); IWL_ERR(mvm, "0x%08X | uPc\n", table.pc); IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1); IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); IWL_ERR(mvm, "0x%08X | data1\n", table.data1); IWL_ERR(mvm, "0x%08X | data2\n", table.data2); IWL_ERR(mvm, "0x%08X | data3\n", table.data3); IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time); IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low); IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi); IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1); IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2); IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3); IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver); IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver); IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver); IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd); IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0); IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1); IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2); 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); if (mvm->support_umac_log) iwl_mvm_dump_umac_error_log(mvm); } void iwl_mvm_fw_error_sram_dump(struct iwl_mvm *mvm) { const struct fw_img *img; u32 ofs, sram_len; void *sram; if (!mvm->ucode_loaded || mvm->fw_error_sram) return; img = &mvm->fw->img[mvm->cur_ucode]; ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; sram_len = img->sec[IWL_UCODE_SECTION_DATA].len; sram = kzalloc(sram_len, GFP_ATOMIC); if (!sram) return; iwl_trans_read_mem_bytes(mvm->trans, ofs, sram, sram_len); mvm->fw_error_sram = sram; mvm->fw_error_sram_len = sram_len; } /** * 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, bool init) { struct iwl_host_cmd cmd = { .id = LQ_CMD, .len = { sizeof(struct iwl_lq_cmd), }, .flags = init ? CMD_SYNC : CMD_ASYNC, .data = { lq, }, }; if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT)) 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; int i; lockdep_assert_held(&mvm->mutex); /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */ if (num_of_ant(mvm->fw->valid_rx_ant) == 1) return; if (vif->type == NL80211_IFTYPE_AP) smps_mode = IEEE80211_SMPS_OFF; else smps_mode = IEEE80211_SMPS_AUTOMATIC; 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); } int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif, bool value) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int res; lockdep_assert_held(&mvm->mutex); if (mvmvif->low_latency == value) return 0; mvmvif->low_latency = value; res = iwl_mvm_update_quotas(mvm, NULL); if (res) return res; iwl_mvm_bt_coex_vif_change(mvm); return iwl_mvm_power_update_mac(mvm, vif); } static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) { bool *result = _data; if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif))) *result = true; } bool iwl_mvm_low_latency(struct iwl_mvm *mvm) { bool result = false; ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_ll_iter, &result); return result; } static void iwl_mvm_idle_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) { bool *idle = _data; if (!vif->bss_conf.idle) *idle = false; } bool iwl_mvm_is_idle(struct iwl_mvm *mvm) { bool idle = true; ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_idle_iter, &idle); return idle; }