/****************************************************************************** * * 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) 2005 - 2011 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 LICENSE.GPL. * * 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) 2005 - 2011 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. * *****************************************************************************/ #ifndef __il_commands_h__ #define __il_commands_h__ #include <linux/ieee80211.h> struct il_priv; /* uCode version contains 4 values: Major/Minor/API/Serial */ #define IL_UCODE_MAJOR(ver) (((ver) & 0xFF000000) >> 24) #define IL_UCODE_MINOR(ver) (((ver) & 0x00FF0000) >> 16) #define IL_UCODE_API(ver) (((ver) & 0x0000FF00) >> 8) #define IL_UCODE_SERIAL(ver) ((ver) & 0x000000FF) /* Tx rates */ #define IL_CCK_RATES 4 #define IL_OFDM_RATES 8 #define IL_MAX_RATES (IL_CCK_RATES + IL_OFDM_RATES) enum { N_ALIVE = 0x1, N_ERROR = 0x2, /* RXON and QOS commands */ C_RXON = 0x10, C_RXON_ASSOC = 0x11, C_QOS_PARAM = 0x13, C_RXON_TIMING = 0x14, /* Multi-Station support */ C_ADD_STA = 0x18, C_REM_STA = 0x19, /* Security */ C_WEPKEY = 0x20, /* RX, TX, LEDs */ N_3945_RX = 0x1b, /* 3945 only */ C_TX = 0x1c, C_RATE_SCALE = 0x47, /* 3945 only */ C_LEDS = 0x48, C_TX_LINK_QUALITY_CMD = 0x4e, /* for 4965 */ /* 802.11h related */ C_CHANNEL_SWITCH = 0x72, N_CHANNEL_SWITCH = 0x73, C_SPECTRUM_MEASUREMENT = 0x74, N_SPECTRUM_MEASUREMENT = 0x75, /* Power Management */ C_POWER_TBL = 0x77, N_PM_SLEEP = 0x7A, N_PM_DEBUG_STATS = 0x7B, /* Scan commands and notifications */ C_SCAN = 0x80, C_SCAN_ABORT = 0x81, N_SCAN_START = 0x82, N_SCAN_RESULTS = 0x83, N_SCAN_COMPLETE = 0x84, /* IBSS/AP commands */ N_BEACON = 0x90, C_TX_BEACON = 0x91, /* Miscellaneous commands */ C_TX_PWR_TBL = 0x97, /* Bluetooth device coexistence config command */ C_BT_CONFIG = 0x9b, /* Statistics */ C_STATS = 0x9c, N_STATS = 0x9d, /* RF-KILL commands and notifications */ N_CARD_STATE = 0xa1, /* Missed beacons notification */ N_MISSED_BEACONS = 0xa2, C_CT_KILL_CONFIG = 0xa4, C_SENSITIVITY = 0xa8, C_PHY_CALIBRATION = 0xb0, N_RX_PHY = 0xc0, N_RX_MPDU = 0xc1, N_RX = 0xc3, N_COMPRESSED_BA = 0xc5, IL_CN_MAX = 0xff }; /****************************************************************************** * (0) * Commonly used structures and definitions: * Command header, rate_n_flags, txpower * *****************************************************************************/ /* il_cmd_header flags value */ #define IL_CMD_FAILED_MSK 0x40 #define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f) #define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8) #define SEQ_TO_IDX(s) ((s) & 0xff) #define IDX_TO_SEQ(i) ((i) & 0xff) #define SEQ_HUGE_FRAME cpu_to_le16(0x4000) #define SEQ_RX_FRAME cpu_to_le16(0x8000) /** * struct il_cmd_header * * This header format appears in the beginning of each command sent from the * driver, and each response/notification received from uCode. */ struct il_cmd_header { u8 cmd; /* Command ID: C_RXON, etc. */ u8 flags; /* 0:5 reserved, 6 abort, 7 internal */ /* * The driver sets up the sequence number to values of its choosing. * uCode does not use this value, but passes it back to the driver * when sending the response to each driver-originated command, so * the driver can match the response to the command. Since the values * don't get used by uCode, the driver may set up an arbitrary format. * * There is one exception: uCode sets bit 15 when it originates * the response/notification, i.e. when the response/notification * is not a direct response to a command sent by the driver. For * example, uCode issues N_3945_RX when it sends a received frame * to the driver; it is not a direct response to any driver command. * * The Linux driver uses the following format: * * 0:7 tfd idx - position within TX queue * 8:12 TX queue id * 13 reserved * 14 huge - driver sets this to indicate command is in the * 'huge' storage at the end of the command buffers * 15 unsolicited RX or uCode-originated notification */ __le16 sequence; /* command or response/notification data follows immediately */ u8 data[]; } __packed; /** * struct il3945_tx_power * * Used in C_TX_PWR_TBL, C_SCAN, C_CHANNEL_SWITCH * * Each entry contains two values: * 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained * linear value that multiplies the output of the digital signal processor, * before being sent to the analog radio. * 2) Radio gain. This sets the analog gain of the radio Tx path. * It is a coarser setting, and behaves in a logarithmic (dB) fashion. * * Driver obtains values from struct il3945_tx_power power_gain_table[][]. */ struct il3945_tx_power { u8 tx_gain; /* gain for analog radio */ u8 dsp_atten; /* gain for DSP */ } __packed; /** * struct il3945_power_per_rate * * Used in C_TX_PWR_TBL, C_CHANNEL_SWITCH */ struct il3945_power_per_rate { u8 rate; /* plcp */ struct il3945_tx_power tpc; u8 reserved; } __packed; /** * iwl4965 rate_n_flags bit fields * * rate_n_flags format is used in following iwl4965 commands: * N_RX (response only) * N_RX_MPDU (response only) * C_TX (both command and response) * C_TX_LINK_QUALITY_CMD * * High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"): * 2-0: 0) 6 Mbps * 1) 12 Mbps * 2) 18 Mbps * 3) 24 Mbps * 4) 36 Mbps * 5) 48 Mbps * 6) 54 Mbps * 7) 60 Mbps * * 4-3: 0) Single stream (SISO) * 1) Dual stream (MIMO) * 2) Triple stream (MIMO) * * 5: Value of 0x20 in bits 7:0 indicates 6 Mbps HT40 duplicate data * * Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"): * 3-0: 0xD) 6 Mbps * 0xF) 9 Mbps * 0x5) 12 Mbps * 0x7) 18 Mbps * 0x9) 24 Mbps * 0xB) 36 Mbps * 0x1) 48 Mbps * 0x3) 54 Mbps * * Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"): * 6-0: 10) 1 Mbps * 20) 2 Mbps * 55) 5.5 Mbps * 110) 11 Mbps */ #define RATE_MCS_CODE_MSK 0x7 #define RATE_MCS_SPATIAL_POS 3 #define RATE_MCS_SPATIAL_MSK 0x18 #define RATE_MCS_HT_DUP_POS 5 #define RATE_MCS_HT_DUP_MSK 0x20 /* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */ #define RATE_MCS_FLAGS_POS 8 #define RATE_MCS_HT_POS 8 #define RATE_MCS_HT_MSK 0x100 /* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */ #define RATE_MCS_CCK_POS 9 #define RATE_MCS_CCK_MSK 0x200 /* Bit 10: (1) Use Green Field preamble */ #define RATE_MCS_GF_POS 10 #define RATE_MCS_GF_MSK 0x400 /* Bit 11: (1) Use 40Mhz HT40 chnl width, (0) use 20 MHz legacy chnl width */ #define RATE_MCS_HT40_POS 11 #define RATE_MCS_HT40_MSK 0x800 /* Bit 12: (1) Duplicate data on both 20MHz chnls. HT40 (bit 11) must be set. */ #define RATE_MCS_DUP_POS 12 #define RATE_MCS_DUP_MSK 0x1000 /* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */ #define RATE_MCS_SGI_POS 13 #define RATE_MCS_SGI_MSK 0x2000 /** * rate_n_flags Tx antenna masks * 4965 has 2 transmitters * bit14:16 */ #define RATE_MCS_ANT_POS 14 #define RATE_MCS_ANT_A_MSK 0x04000 #define RATE_MCS_ANT_B_MSK 0x08000 #define RATE_MCS_ANT_C_MSK 0x10000 #define RATE_MCS_ANT_AB_MSK (RATE_MCS_ANT_A_MSK | RATE_MCS_ANT_B_MSK) #define RATE_MCS_ANT_ABC_MSK (RATE_MCS_ANT_AB_MSK | RATE_MCS_ANT_C_MSK) #define RATE_ANT_NUM 3 #define POWER_TBL_NUM_ENTRIES 33 #define POWER_TBL_NUM_HT_OFDM_ENTRIES 32 #define POWER_TBL_CCK_ENTRY 32 #define IL_PWR_NUM_HT_OFDM_ENTRIES 24 #define IL_PWR_CCK_ENTRIES 2 /** * union il4965_tx_power_dual_stream * * Host format used for C_TX_PWR_TBL, C_CHANNEL_SWITCH * Use __le32 version (struct tx_power_dual_stream) when building command. * * Driver provides radio gain and DSP attenuation settings to device in pairs, * one value for each transmitter chain. The first value is for transmitter A, * second for transmitter B. * * For SISO bit rates, both values in a pair should be identical. * For MIMO rates, one value may be different from the other, * in order to balance the Tx output between the two transmitters. * * See more details in doc for TXPOWER in 4965.h. */ union il4965_tx_power_dual_stream { struct { u8 radio_tx_gain[2]; u8 dsp_predis_atten[2]; } s; u32 dw; }; /** * struct tx_power_dual_stream * * Table entries in C_TX_PWR_TBL, C_CHANNEL_SWITCH * * Same format as il_tx_power_dual_stream, but __le32 */ struct tx_power_dual_stream { __le32 dw; } __packed; /** * struct il4965_tx_power_db * * Entire table within C_TX_PWR_TBL, C_CHANNEL_SWITCH */ struct il4965_tx_power_db { struct tx_power_dual_stream power_tbl[POWER_TBL_NUM_ENTRIES]; } __packed; /****************************************************************************** * (0a) * Alive and Error Commands & Responses: * *****************************************************************************/ #define UCODE_VALID_OK cpu_to_le32(0x1) #define INITIALIZE_SUBTYPE (9) /* * ("Initialize") N_ALIVE = 0x1 (response only, not a command) * * uCode issues this "initialize alive" notification once the initialization * uCode image has completed its work, and is ready to load the runtime image. * This is the *first* "alive" notification that the driver will receive after * rebooting uCode; the "initialize" alive is indicated by subtype field == 9. * * See comments documenting "BSM" (bootstrap state machine). * * For 4965, this notification contains important calibration data for * calculating txpower settings: * * 1) Power supply voltage indication. The voltage sensor outputs higher * values for lower voltage, and vice verse. * * 2) Temperature measurement parameters, for each of two channel widths * (20 MHz and 40 MHz) supported by the radios. Temperature sensing * is done via one of the receiver chains, and channel width influences * the results. * * 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation, * for each of 5 frequency ranges. */ struct il_init_alive_resp { u8 ucode_minor; u8 ucode_major; __le16 reserved1; u8 sw_rev[8]; u8 ver_type; u8 ver_subtype; /* "9" for initialize alive */ __le16 reserved2; __le32 log_event_table_ptr; __le32 error_event_table_ptr; __le32 timestamp; __le32 is_valid; /* calibration values from "initialize" uCode */ __le32 voltage; /* signed, higher value is lower voltage */ __le32 therm_r1[2]; /* signed, 1st for normal, 2nd for HT40 */ __le32 therm_r2[2]; /* signed */ __le32 therm_r3[2]; /* signed */ __le32 therm_r4[2]; /* signed */ __le32 tx_atten[5][2]; /* signed MIMO gain comp, 5 freq groups, * 2 Tx chains */ } __packed; /** * N_ALIVE = 0x1 (response only, not a command) * * uCode issues this "alive" notification once the runtime image is ready * to receive commands from the driver. This is the *second* "alive" * notification that the driver will receive after rebooting uCode; * this "alive" is indicated by subtype field != 9. * * See comments documenting "BSM" (bootstrap state machine). * * This response includes two pointers to structures within the device's * data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging: * * 1) log_event_table_ptr indicates base of the event log. This traces * a 256-entry history of uCode execution within a circular buffer. * Its header format is: * * __le32 log_size; log capacity (in number of entries) * __le32 type; (1) timestamp with each entry, (0) no timestamp * __le32 wraps; # times uCode has wrapped to top of circular buffer * __le32 write_idx; next circular buffer entry that uCode would fill * * The header is followed by the circular buffer of log entries. Entries * with timestamps have the following format: * * __le32 event_id; range 0 - 1500 * __le32 timestamp; low 32 bits of TSF (of network, if associated) * __le32 data; event_id-specific data value * * Entries without timestamps contain only event_id and data. * * * 2) error_event_table_ptr indicates base of the error log. This contains * information about any uCode error that occurs. For 4965, the format * of the error log is: * * __le32 valid; (nonzero) valid, (0) log is empty * __le32 error_id; type of error * __le32 pc; program counter * __le32 blink1; branch link * __le32 blink2; branch link * __le32 ilink1; interrupt link * __le32 ilink2; interrupt link * __le32 data1; error-specific data * __le32 data2; error-specific data * __le32 line; source code line of error * __le32 bcon_time; beacon timer * __le32 tsf_low; network timestamp function timer * __le32 tsf_hi; network timestamp function timer * __le32 gp1; GP1 timer register * __le32 gp2; GP2 timer register * __le32 gp3; GP3 timer register * __le32 ucode_ver; uCode version * __le32 hw_ver; HW Silicon version * __le32 brd_ver; HW board version * __le32 log_pc; log program counter * __le32 frame_ptr; frame pointer * __le32 stack_ptr; stack pointer * __le32 hcmd; last host command * __le32 isr0; isr status register LMPM_NIC_ISR0: rxtx_flag * __le32 isr1; isr status register LMPM_NIC_ISR1: host_flag * __le32 isr2; isr status register LMPM_NIC_ISR2: enc_flag * __le32 isr3; isr status register LMPM_NIC_ISR3: time_flag * __le32 isr4; isr status register LMPM_NIC_ISR4: wico interrupt * __le32 isr_pref; isr status register LMPM_NIC_PREF_STAT * __le32 wait_event; wait event() caller address * __le32 l2p_control; L2pControlField * __le32 l2p_duration; L2pDurationField * __le32 l2p_mhvalid; L2pMhValidBits * __le32 l2p_addr_match; L2pAddrMatchStat * __le32 lmpm_pmg_sel; indicate which clocks are turned on (LMPM_PMG_SEL) * __le32 u_timestamp; indicate when the date and time of the compilation * __le32 reserved; * * The Linux driver can print both logs to the system log when a uCode error * occurs. */ struct il_alive_resp { u8 ucode_minor; u8 ucode_major; __le16 reserved1; u8 sw_rev[8]; u8 ver_type; u8 ver_subtype; /* not "9" for runtime alive */ __le16 reserved2; __le32 log_event_table_ptr; /* SRAM address for event log */ __le32 error_event_table_ptr; /* SRAM address for error log */ __le32 timestamp; __le32 is_valid; } __packed; /* * N_ERROR = 0x2 (response only, not a command) */ struct il_error_resp { __le32 error_type; u8 cmd_id; u8 reserved1; __le16 bad_cmd_seq_num; __le32 error_info; __le64 timestamp; } __packed; /****************************************************************************** * (1) * RXON Commands & Responses: * *****************************************************************************/ /* * Rx config defines & structure */ /* rx_config device types */ enum { RXON_DEV_TYPE_AP = 1, RXON_DEV_TYPE_ESS = 3, RXON_DEV_TYPE_IBSS = 4, RXON_DEV_TYPE_SNIFFER = 6, }; #define RXON_RX_CHAIN_DRIVER_FORCE_MSK cpu_to_le16(0x1 << 0) #define RXON_RX_CHAIN_DRIVER_FORCE_POS (0) #define RXON_RX_CHAIN_VALID_MSK cpu_to_le16(0x7 << 1) #define RXON_RX_CHAIN_VALID_POS (1) #define RXON_RX_CHAIN_FORCE_SEL_MSK cpu_to_le16(0x7 << 4) #define RXON_RX_CHAIN_FORCE_SEL_POS (4) #define RXON_RX_CHAIN_FORCE_MIMO_SEL_MSK cpu_to_le16(0x7 << 7) #define RXON_RX_CHAIN_FORCE_MIMO_SEL_POS (7) #define RXON_RX_CHAIN_CNT_MSK cpu_to_le16(0x3 << 10) #define RXON_RX_CHAIN_CNT_POS (10) #define RXON_RX_CHAIN_MIMO_CNT_MSK cpu_to_le16(0x3 << 12) #define RXON_RX_CHAIN_MIMO_CNT_POS (12) #define RXON_RX_CHAIN_MIMO_FORCE_MSK cpu_to_le16(0x1 << 14) #define RXON_RX_CHAIN_MIMO_FORCE_POS (14) /* rx_config flags */ /* band & modulation selection */ #define RXON_FLG_BAND_24G_MSK cpu_to_le32(1 << 0) #define RXON_FLG_CCK_MSK cpu_to_le32(1 << 1) /* auto detection enable */ #define RXON_FLG_AUTO_DETECT_MSK cpu_to_le32(1 << 2) /* TGg protection when tx */ #define RXON_FLG_TGG_PROTECT_MSK cpu_to_le32(1 << 3) /* cck short slot & preamble */ #define RXON_FLG_SHORT_SLOT_MSK cpu_to_le32(1 << 4) #define RXON_FLG_SHORT_PREAMBLE_MSK cpu_to_le32(1 << 5) /* antenna selection */ #define RXON_FLG_DIS_DIV_MSK cpu_to_le32(1 << 7) #define RXON_FLG_ANT_SEL_MSK cpu_to_le32(0x0f00) #define RXON_FLG_ANT_A_MSK cpu_to_le32(1 << 8) #define RXON_FLG_ANT_B_MSK cpu_to_le32(1 << 9) /* radar detection enable */ #define RXON_FLG_RADAR_DETECT_MSK cpu_to_le32(1 << 12) #define RXON_FLG_TGJ_NARROW_BAND_MSK cpu_to_le32(1 << 13) /* rx response to host with 8-byte TSF * (according to ON_AIR deassertion) */ #define RXON_FLG_TSF2HOST_MSK cpu_to_le32(1 << 15) /* HT flags */ #define RXON_FLG_CTRL_CHANNEL_LOC_POS (22) #define RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK cpu_to_le32(0x1 << 22) #define RXON_FLG_HT_OPERATING_MODE_POS (23) #define RXON_FLG_HT_PROT_MSK cpu_to_le32(0x1 << 23) #define RXON_FLG_HT40_PROT_MSK cpu_to_le32(0x2 << 23) #define RXON_FLG_CHANNEL_MODE_POS (25) #define RXON_FLG_CHANNEL_MODE_MSK cpu_to_le32(0x3 << 25) /* channel mode */ enum { CHANNEL_MODE_LEGACY = 0, CHANNEL_MODE_PURE_40 = 1, CHANNEL_MODE_MIXED = 2, CHANNEL_MODE_RESERVED = 3, }; #define RXON_FLG_CHANNEL_MODE_LEGACY \ cpu_to_le32(CHANNEL_MODE_LEGACY << RXON_FLG_CHANNEL_MODE_POS) #define RXON_FLG_CHANNEL_MODE_PURE_40 \ cpu_to_le32(CHANNEL_MODE_PURE_40 << RXON_FLG_CHANNEL_MODE_POS) #define RXON_FLG_CHANNEL_MODE_MIXED \ cpu_to_le32(CHANNEL_MODE_MIXED << RXON_FLG_CHANNEL_MODE_POS) /* CTS to self (if spec allows) flag */ #define RXON_FLG_SELF_CTS_EN cpu_to_le32(0x1<<30) /* rx_config filter flags */ /* accept all data frames */ #define RXON_FILTER_PROMISC_MSK cpu_to_le32(1 << 0) /* pass control & management to host */ #define RXON_FILTER_CTL2HOST_MSK cpu_to_le32(1 << 1) /* accept multi-cast */ #define RXON_FILTER_ACCEPT_GRP_MSK cpu_to_le32(1 << 2) /* don't decrypt uni-cast frames */ #define RXON_FILTER_DIS_DECRYPT_MSK cpu_to_le32(1 << 3) /* don't decrypt multi-cast frames */ #define RXON_FILTER_DIS_GRP_DECRYPT_MSK cpu_to_le32(1 << 4) /* STA is associated */ #define RXON_FILTER_ASSOC_MSK cpu_to_le32(1 << 5) /* transfer to host non bssid beacons in associated state */ #define RXON_FILTER_BCON_AWARE_MSK cpu_to_le32(1 << 6) /** * C_RXON = 0x10 (command, has simple generic response) * * RXON tunes the radio tuner to a service channel, and sets up a number * of parameters that are used primarily for Rx, but also for Tx operations. * * NOTE: When tuning to a new channel, driver must set the * RXON_FILTER_ASSOC_MSK to 0. This will clear station-dependent * info within the device, including the station tables, tx retry * rate tables, and txpower tables. Driver must build a new station * table and txpower table before transmitting anything on the RXON * channel. * * NOTE: All RXONs wipe clean the internal txpower table. Driver must * issue a new C_TX_PWR_TBL after each C_RXON (0x10), * regardless of whether RXON_FILTER_ASSOC_MSK is set. */ struct il3945_rxon_cmd { u8 node_addr[6]; __le16 reserved1; u8 bssid_addr[6]; __le16 reserved2; u8 wlap_bssid_addr[6]; __le16 reserved3; u8 dev_type; u8 air_propagation; __le16 reserved4; u8 ofdm_basic_rates; u8 cck_basic_rates; __le16 assoc_id; __le32 flags; __le32 filter_flags; __le16 channel; __le16 reserved5; } __packed; struct il4965_rxon_cmd { u8 node_addr[6]; __le16 reserved1; u8 bssid_addr[6]; __le16 reserved2; u8 wlap_bssid_addr[6]; __le16 reserved3; u8 dev_type; u8 air_propagation; __le16 rx_chain; u8 ofdm_basic_rates; u8 cck_basic_rates; __le16 assoc_id; __le32 flags; __le32 filter_flags; __le16 channel; u8 ofdm_ht_single_stream_basic_rates; u8 ofdm_ht_dual_stream_basic_rates; } __packed; /* Create a common rxon cmd which will be typecast into the 3945 or 4965 * specific rxon cmd, depending on where it is called from. */ struct il_rxon_cmd { u8 node_addr[6]; __le16 reserved1; u8 bssid_addr[6]; __le16 reserved2; u8 wlap_bssid_addr[6]; __le16 reserved3; u8 dev_type; u8 air_propagation; __le16 rx_chain; u8 ofdm_basic_rates; u8 cck_basic_rates; __le16 assoc_id; __le32 flags; __le32 filter_flags; __le16 channel; u8 ofdm_ht_single_stream_basic_rates; u8 ofdm_ht_dual_stream_basic_rates; u8 reserved4; u8 reserved5; } __packed; /* * C_RXON_ASSOC = 0x11 (command, has simple generic response) */ struct il3945_rxon_assoc_cmd { __le32 flags; __le32 filter_flags; u8 ofdm_basic_rates; u8 cck_basic_rates; __le16 reserved; } __packed; struct il4965_rxon_assoc_cmd { __le32 flags; __le32 filter_flags; u8 ofdm_basic_rates; u8 cck_basic_rates; u8 ofdm_ht_single_stream_basic_rates; u8 ofdm_ht_dual_stream_basic_rates; __le16 rx_chain_select_flags; __le16 reserved; } __packed; #define IL_CONN_MAX_LISTEN_INTERVAL 10 #define IL_MAX_UCODE_BEACON_INTERVAL 4 /* 4096 */ #define IL39_MAX_UCODE_BEACON_INTERVAL 1 /* 1024 */ /* * C_RXON_TIMING = 0x14 (command, has simple generic response) */ struct il_rxon_time_cmd { __le64 timestamp; __le16 beacon_interval; __le16 atim_win; __le32 beacon_init_val; __le16 listen_interval; u8 dtim_period; u8 delta_cp_bss_tbtts; } __packed; /* * C_CHANNEL_SWITCH = 0x72 (command, has simple generic response) */ struct il3945_channel_switch_cmd { u8 band; u8 expect_beacon; __le16 channel; __le32 rxon_flags; __le32 rxon_filter_flags; __le32 switch_time; struct il3945_power_per_rate power[IL_MAX_RATES]; } __packed; struct il4965_channel_switch_cmd { u8 band; u8 expect_beacon; __le16 channel; __le32 rxon_flags; __le32 rxon_filter_flags; __le32 switch_time; struct il4965_tx_power_db tx_power; } __packed; /* * N_CHANNEL_SWITCH = 0x73 (notification only, not a command) */ struct il_csa_notification { __le16 band; __le16 channel; __le32 status; /* 0 - OK, 1 - fail */ } __packed; /****************************************************************************** * (2) * Quality-of-Service (QOS) Commands & Responses: * *****************************************************************************/ /** * struct il_ac_qos -- QOS timing params for C_QOS_PARAM * One for each of 4 EDCA access categories in struct il_qosparam_cmd * * @cw_min: Contention win, start value in numbers of slots. * Should be a power-of-2, minus 1. Device's default is 0x0f. * @cw_max: Contention win, max value in numbers of slots. * Should be a power-of-2, minus 1. Device's default is 0x3f. * @aifsn: Number of slots in Arbitration Interframe Space (before * performing random backoff timing prior to Tx). Device default 1. * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0. * * Device will automatically increase contention win by (2*CW) + 1 for each * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW * value, to cap the CW value. */ struct il_ac_qos { __le16 cw_min; __le16 cw_max; u8 aifsn; u8 reserved1; __le16 edca_txop; } __packed; /* QoS flags defines */ #define QOS_PARAM_FLG_UPDATE_EDCA_MSK cpu_to_le32(0x01) #define QOS_PARAM_FLG_TGN_MSK cpu_to_le32(0x02) #define QOS_PARAM_FLG_TXOP_TYPE_MSK cpu_to_le32(0x10) /* Number of Access Categories (AC) (EDCA), queues 0..3 */ #define AC_NUM 4 /* * C_QOS_PARAM = 0x13 (command, has simple generic response) * * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs * 0: Background, 1: Best Effort, 2: Video, 3: Voice. */ struct il_qosparam_cmd { __le32 qos_flags; struct il_ac_qos ac[AC_NUM]; } __packed; /****************************************************************************** * (3) * Add/Modify Stations Commands & Responses: * *****************************************************************************/ /* * Multi station support */ /* Special, dedicated locations within device's station table */ #define IL_AP_ID 0 #define IL_STA_ID 2 #define IL3945_BROADCAST_ID 24 #define IL3945_STATION_COUNT 25 #define IL4965_BROADCAST_ID 31 #define IL4965_STATION_COUNT 32 #define IL_STATION_COUNT 32 /* MAX(3945,4965) */ #define IL_INVALID_STATION 255 #define STA_FLG_TX_RATE_MSK cpu_to_le32(1 << 2) #define STA_FLG_PWR_SAVE_MSK cpu_to_le32(1 << 8) #define STA_FLG_RTS_MIMO_PROT_MSK cpu_to_le32(1 << 17) #define STA_FLG_AGG_MPDU_8US_MSK cpu_to_le32(1 << 18) #define STA_FLG_MAX_AGG_SIZE_POS (19) #define STA_FLG_MAX_AGG_SIZE_MSK cpu_to_le32(3 << 19) #define STA_FLG_HT40_EN_MSK cpu_to_le32(1 << 21) #define STA_FLG_MIMO_DIS_MSK cpu_to_le32(1 << 22) #define STA_FLG_AGG_MPDU_DENSITY_POS (23) #define STA_FLG_AGG_MPDU_DENSITY_MSK cpu_to_le32(7 << 23) /* Use in mode field. 1: modify existing entry, 0: add new station entry */ #define STA_CONTROL_MODIFY_MSK 0x01 /* key flags __le16*/ #define STA_KEY_FLG_ENCRYPT_MSK cpu_to_le16(0x0007) #define STA_KEY_FLG_NO_ENC cpu_to_le16(0x0000) #define STA_KEY_FLG_WEP cpu_to_le16(0x0001) #define STA_KEY_FLG_CCMP cpu_to_le16(0x0002) #define STA_KEY_FLG_TKIP cpu_to_le16(0x0003) #define STA_KEY_FLG_KEYID_POS 8 #define STA_KEY_FLG_INVALID cpu_to_le16(0x0800) /* wep key is either from global key (0) or from station info array (1) */ #define STA_KEY_FLG_MAP_KEY_MSK cpu_to_le16(0x0008) /* wep key in STA: 5-bytes (0) or 13-bytes (1) */ #define STA_KEY_FLG_KEY_SIZE_MSK cpu_to_le16(0x1000) #define STA_KEY_MULTICAST_MSK cpu_to_le16(0x4000) #define STA_KEY_MAX_NUM 8 /* Flags indicate whether to modify vs. don't change various station params */ #define STA_MODIFY_KEY_MASK 0x01 #define STA_MODIFY_TID_DISABLE_TX 0x02 #define STA_MODIFY_TX_RATE_MSK 0x04 #define STA_MODIFY_ADDBA_TID_MSK 0x08 #define STA_MODIFY_DELBA_TID_MSK 0x10 #define STA_MODIFY_SLEEP_TX_COUNT_MSK 0x20 /* Receiver address (actually, Rx station's idx into station table), * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */ #define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid)) struct il4965_keyinfo { __le16 key_flags; u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */ u8 reserved1; __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */ u8 key_offset; u8 reserved2; u8 key[16]; /* 16-byte unicast decryption key */ } __packed; /** * struct sta_id_modify * @addr[ETH_ALEN]: station's MAC address * @sta_id: idx of station in uCode's station table * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change * * Driver selects unused table idx when adding new station, * or the idx to a pre-existing station entry when modifying that station. * Some idxes have special purposes (IL_AP_ID, idx 0, is for AP). * * modify_mask flags select which parameters to modify vs. leave alone. */ struct sta_id_modify { u8 addr[ETH_ALEN]; __le16 reserved1; u8 sta_id; u8 modify_mask; __le16 reserved2; } __packed; /* * C_ADD_STA = 0x18 (command) * * The device contains an internal table of per-station information, * with info on security keys, aggregation parameters, and Tx rates for * initial Tx attempt and any retries (4965 devices uses * C_TX_LINK_QUALITY_CMD, * 3945 uses C_RATE_SCALE to set up rate tables). * * C_ADD_STA sets up the table entry for one station, either creating * a new entry, or modifying a pre-existing one. * * NOTE: RXON command (without "associated" bit set) wipes the station table * clean. Moving into RF_KILL state does this also. Driver must set up * new station table before transmitting anything on the RXON channel * (except active scans or active measurements; those commands carry * their own txpower/rate setup data). * * When getting started on a new channel, driver must set up the * IL_BROADCAST_ID entry (last entry in the table). For a client * station in a BSS, once an AP is selected, driver sets up the AP STA * in the IL_AP_ID entry (1st entry in the table). BROADCAST and AP * are all that are needed for a BSS client station. If the device is * used as AP, or in an IBSS network, driver must set up station table * entries for all STAs in network, starting with idx IL_STA_ID. */ struct il3945_addsta_cmd { u8 mode; /* 1: modify existing, 0: add new station */ u8 reserved[3]; struct sta_id_modify sta; struct il4965_keyinfo key; __le32 station_flags; /* STA_FLG_* */ __le32 station_flags_msk; /* STA_FLG_* */ /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) * corresponding to bit (e.g. bit 5 controls TID 5). * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ __le16 tid_disable_tx; __le16 rate_n_flags; /* TID for which to add block-ack support. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ u8 add_immediate_ba_tid; /* TID for which to remove block-ack support. * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ u8 remove_immediate_ba_tid; /* Starting Sequence Number for added block-ack support. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ __le16 add_immediate_ba_ssn; } __packed; struct il4965_addsta_cmd { u8 mode; /* 1: modify existing, 0: add new station */ u8 reserved[3]; struct sta_id_modify sta; struct il4965_keyinfo key; __le32 station_flags; /* STA_FLG_* */ __le32 station_flags_msk; /* STA_FLG_* */ /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) * corresponding to bit (e.g. bit 5 controls TID 5). * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ __le16 tid_disable_tx; __le16 reserved1; /* TID for which to add block-ack support. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ u8 add_immediate_ba_tid; /* TID for which to remove block-ack support. * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ u8 remove_immediate_ba_tid; /* Starting Sequence Number for added block-ack support. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ __le16 add_immediate_ba_ssn; /* * Number of packets OK to transmit to station even though * it is asleep -- used to synchronise PS-poll and u-APSD * responses while ucode keeps track of STA sleep state. */ __le16 sleep_tx_count; __le16 reserved2; } __packed; /* Wrapper struct for 3945 and 4965 addsta_cmd structures */ struct il_addsta_cmd { u8 mode; /* 1: modify existing, 0: add new station */ u8 reserved[3]; struct sta_id_modify sta; struct il4965_keyinfo key; __le32 station_flags; /* STA_FLG_* */ __le32 station_flags_msk; /* STA_FLG_* */ /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID) * corresponding to bit (e.g. bit 5 controls TID 5). * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */ __le16 tid_disable_tx; __le16 rate_n_flags; /* 3945 only */ /* TID for which to add block-ack support. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ u8 add_immediate_ba_tid; /* TID for which to remove block-ack support. * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */ u8 remove_immediate_ba_tid; /* Starting Sequence Number for added block-ack support. * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */ __le16 add_immediate_ba_ssn; /* * Number of packets OK to transmit to station even though * it is asleep -- used to synchronise PS-poll and u-APSD * responses while ucode keeps track of STA sleep state. */ __le16 sleep_tx_count; __le16 reserved2; } __packed; #define ADD_STA_SUCCESS_MSK 0x1 #define ADD_STA_NO_ROOM_IN_TBL 0x2 #define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4 #define ADD_STA_MODIFY_NON_EXIST_STA 0x8 /* * C_ADD_STA = 0x18 (response) */ struct il_add_sta_resp { u8 status; /* ADD_STA_* */ } __packed; #define REM_STA_SUCCESS_MSK 0x1 /* * C_REM_STA = 0x19 (response) */ struct il_rem_sta_resp { u8 status; } __packed; /* * C_REM_STA = 0x19 (command) */ struct il_rem_sta_cmd { u8 num_sta; /* number of removed stations */ u8 reserved[3]; u8 addr[ETH_ALEN]; /* MAC addr of the first station */ u8 reserved2[2]; } __packed; #define IL_TX_FIFO_BK_MSK cpu_to_le32(BIT(0)) #define IL_TX_FIFO_BE_MSK cpu_to_le32(BIT(1)) #define IL_TX_FIFO_VI_MSK cpu_to_le32(BIT(2)) #define IL_TX_FIFO_VO_MSK cpu_to_le32(BIT(3)) #define IL_AGG_TX_QUEUE_MSK cpu_to_le32(0xffc00) #define IL_DROP_SINGLE 0 #define IL_DROP_SELECTED 1 #define IL_DROP_ALL 2 /* * REPLY_WEP_KEY = 0x20 */ struct il_wep_key { u8 key_idx; u8 key_offset; u8 reserved1[2]; u8 key_size; u8 reserved2[3]; u8 key[16]; } __packed; struct il_wep_cmd { u8 num_keys; u8 global_key_type; u8 flags; u8 reserved; struct il_wep_key key[]; } __packed; #define WEP_KEY_WEP_TYPE 1 #define WEP_KEYS_MAX 4 #define WEP_INVALID_OFFSET 0xff #define WEP_KEY_LEN_64 5 #define WEP_KEY_LEN_128 13 /****************************************************************************** * (4) * Rx Responses: * *****************************************************************************/ #define RX_RES_STATUS_NO_CRC32_ERROR cpu_to_le32(1 << 0) #define RX_RES_STATUS_NO_RXE_OVERFLOW cpu_to_le32(1 << 1) #define RX_RES_PHY_FLAGS_BAND_24_MSK cpu_to_le16(1 << 0) #define RX_RES_PHY_FLAGS_MOD_CCK_MSK cpu_to_le16(1 << 1) #define RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK cpu_to_le16(1 << 2) #define RX_RES_PHY_FLAGS_NARROW_BAND_MSK cpu_to_le16(1 << 3) #define RX_RES_PHY_FLAGS_ANTENNA_MSK 0x70 #define RX_RES_PHY_FLAGS_ANTENNA_POS 4 #define RX_RES_PHY_FLAGS_AGG_MSK cpu_to_le16(1 << 7) #define RX_RES_STATUS_SEC_TYPE_MSK (0x7 << 8) #define RX_RES_STATUS_SEC_TYPE_NONE (0x0 << 8) #define RX_RES_STATUS_SEC_TYPE_WEP (0x1 << 8) #define RX_RES_STATUS_SEC_TYPE_CCMP (0x2 << 8) #define RX_RES_STATUS_SEC_TYPE_TKIP (0x3 << 8) #define RX_RES_STATUS_SEC_TYPE_ERR (0x7 << 8) #define RX_RES_STATUS_STATION_FOUND (1<<6) #define RX_RES_STATUS_NO_STATION_INFO_MISMATCH (1<<7) #define RX_RES_STATUS_DECRYPT_TYPE_MSK (0x3 << 11) #define RX_RES_STATUS_NOT_DECRYPT (0x0 << 11) #define RX_RES_STATUS_DECRYPT_OK (0x3 << 11) #define RX_RES_STATUS_BAD_ICV_MIC (0x1 << 11) #define RX_RES_STATUS_BAD_KEY_TTAK (0x2 << 11) #define RX_MPDU_RES_STATUS_ICV_OK (0x20) #define RX_MPDU_RES_STATUS_MIC_OK (0x40) #define RX_MPDU_RES_STATUS_TTAK_OK (1 << 7) #define RX_MPDU_RES_STATUS_DEC_DONE_MSK (0x800) struct il3945_rx_frame_stats { u8 phy_count; u8 id; u8 rssi; u8 agc; __le16 sig_avg; __le16 noise_diff; u8 payload[]; } __packed; struct il3945_rx_frame_hdr { __le16 channel; __le16 phy_flags; u8 reserved1; u8 rate; __le16 len; u8 payload[]; } __packed; struct il3945_rx_frame_end { __le32 status; __le64 timestamp; __le32 beacon_timestamp; } __packed; /* * N_3945_RX = 0x1b (response only, not a command) * * NOTE: DO NOT dereference from casts to this structure * It is provided only for calculating minimum data set size. * The actual offsets of the hdr and end are dynamic based on * stats.phy_count */ struct il3945_rx_frame { struct il3945_rx_frame_stats stats; struct il3945_rx_frame_hdr hdr; struct il3945_rx_frame_end end; } __packed; #define IL39_RX_FRAME_SIZE (4 + sizeof(struct il3945_rx_frame)) /* Fixed (non-configurable) rx data from phy */ #define IL49_RX_RES_PHY_CNT 14 #define IL49_RX_PHY_FLAGS_ANTENNAE_OFFSET (4) #define IL49_RX_PHY_FLAGS_ANTENNAE_MASK (0x70) #define IL49_AGC_DB_MASK (0x3f80) /* MASK(7,13) */ #define IL49_AGC_DB_POS (7) struct il4965_rx_non_cfg_phy { __le16 ant_selection; /* ant A bit 4, ant B bit 5, ant C bit 6 */ __le16 agc_info; /* agc code 0:6, agc dB 7:13, reserved 14:15 */ u8 rssi_info[6]; /* we use even entries, 0/2/4 for A/B/C rssi */ u8 pad[]; } __packed; /* * N_RX = 0xc3 (response only, not a command) * Used only for legacy (non 11n) frames. */ struct il_rx_phy_res { u8 non_cfg_phy_cnt; /* non configurable DSP phy data byte count */ u8 cfg_phy_cnt; /* configurable DSP phy data byte count */ u8 stat_id; /* configurable DSP phy data set ID */ u8 reserved1; __le64 timestamp; /* TSF at on air rise */ __le32 beacon_time_stamp; /* beacon at on-air rise */ __le16 phy_flags; /* general phy flags: band, modulation, ... */ __le16 channel; /* channel number */ u8 non_cfg_phy_buf[32]; /* for various implementations of non_cfg_phy */ __le32 rate_n_flags; /* RATE_MCS_* */ __le16 byte_count; /* frame's byte-count */ __le16 frame_time; /* frame's time on the air */ } __packed; struct il_rx_mpdu_res_start { __le16 byte_count; __le16 reserved; } __packed; /****************************************************************************** * (5) * Tx Commands & Responses: * * Driver must place each C_TX command into one of the prioritized Tx * queues in host DRAM, shared between driver and device (see comments for * SCD registers and Tx/Rx Queues). When the device's Tx scheduler and uCode * are preparing to transmit, the device pulls the Tx command over the PCI * bus via one of the device's Tx DMA channels, to fill an internal FIFO * from which data will be transmitted. * * uCode handles all timing and protocol related to control frames * (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler * handle reception of block-acks; uCode updates the host driver via * N_COMPRESSED_BA. * * uCode handles retrying Tx when an ACK is expected but not received. * This includes trying lower data rates than the one requested in the Tx * command, as set up by the C_RATE_SCALE (for 3945) or * C_TX_LINK_QUALITY_CMD (4965). * * Driver sets up transmit power for various rates via C_TX_PWR_TBL. * This command must be executed after every RXON command, before Tx can occur. *****************************************************************************/ /* C_TX Tx flags field */ /* * 1: Use Request-To-Send protocol before this frame. * Mutually exclusive vs. TX_CMD_FLG_CTS_MSK. */ #define TX_CMD_FLG_RTS_MSK cpu_to_le32(1 << 1) /* * 1: Transmit Clear-To-Send to self before this frame. * Driver should set this for AUTH/DEAUTH/ASSOC-REQ/REASSOC mgmnt frames. * Mutually exclusive vs. TX_CMD_FLG_RTS_MSK. */ #define TX_CMD_FLG_CTS_MSK cpu_to_le32(1 << 2) /* 1: Expect ACK from receiving station * 0: Don't expect ACK (MAC header's duration field s/b 0) * Set this for unicast frames, but not broadcast/multicast. */ #define TX_CMD_FLG_ACK_MSK cpu_to_le32(1 << 3) /* For 4965 devices: * 1: Use rate scale table (see C_TX_LINK_QUALITY_CMD). * Tx command's initial_rate_idx indicates first rate to try; * uCode walks through table for additional Tx attempts. * 0: Use Tx rate/MCS from Tx command's rate_n_flags field. * This rate will be used for all Tx attempts; it will not be scaled. */ #define TX_CMD_FLG_STA_RATE_MSK cpu_to_le32(1 << 4) /* 1: Expect immediate block-ack. * Set when Txing a block-ack request frame. Also set TX_CMD_FLG_ACK_MSK. */ #define TX_CMD_FLG_IMM_BA_RSP_MASK cpu_to_le32(1 << 6) /* * 1: Frame requires full Tx-Op protection. * Set this if either RTS or CTS Tx Flag gets set. */ #define TX_CMD_FLG_FULL_TXOP_PROT_MSK cpu_to_le32(1 << 7) /* Tx antenna selection field; used only for 3945, reserved (0) for 4965 devices. * Set field to "0" to allow 3945 uCode to select antenna (normal usage). */ #define TX_CMD_FLG_ANT_SEL_MSK cpu_to_le32(0xf00) #define TX_CMD_FLG_ANT_A_MSK cpu_to_le32(1 << 8) #define TX_CMD_FLG_ANT_B_MSK cpu_to_le32(1 << 9) /* 1: uCode overrides sequence control field in MAC header. * 0: Driver provides sequence control field in MAC header. * Set this for management frames, non-QOS data frames, non-unicast frames, * and also in Tx command embedded in C_SCAN for active scans. */ #define TX_CMD_FLG_SEQ_CTL_MSK cpu_to_le32(1 << 13) /* 1: This frame is non-last MPDU; more fragments are coming. * 0: Last fragment, or not using fragmentation. */ #define TX_CMD_FLG_MORE_FRAG_MSK cpu_to_le32(1 << 14) /* 1: uCode calculates and inserts Timestamp Function (TSF) in outgoing frame. * 0: No TSF required in outgoing frame. * Set this for transmitting beacons and probe responses. */ #define TX_CMD_FLG_TSF_MSK cpu_to_le32(1 << 16) /* 1: Driver inserted 2 bytes pad after the MAC header, for (required) dword * alignment of frame's payload data field. * 0: No pad * Set this for MAC headers with 26 or 30 bytes, i.e. those with QOS or ADDR4 * field (but not both). Driver must align frame data (i.e. data following * MAC header) to DWORD boundary. */ #define TX_CMD_FLG_MH_PAD_MSK cpu_to_le32(1 << 20) /* accelerate aggregation support * 0 - no CCMP encryption; 1 - CCMP encryption */ #define TX_CMD_FLG_AGG_CCMP_MSK cpu_to_le32(1 << 22) /* HCCA-AP - disable duration overwriting. */ #define TX_CMD_FLG_DUR_MSK cpu_to_le32(1 << 25) /* * TX command security control */ #define TX_CMD_SEC_WEP 0x01 #define TX_CMD_SEC_CCM 0x02 #define TX_CMD_SEC_TKIP 0x03 #define TX_CMD_SEC_MSK 0x03 #define TX_CMD_SEC_SHIFT 6 #define TX_CMD_SEC_KEY128 0x08 /* * C_TX = 0x1c (command) */ struct il3945_tx_cmd { /* * MPDU byte count: * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size, * + 8 byte IV for CCM or TKIP (not used for WEP) * + Data payload * + 8-byte MIC (not used for CCM/WEP) * NOTE: Does not include Tx command bytes, post-MAC pad bytes, * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i * Range: 14-2342 bytes. */ __le16 len; /* * MPDU or MSDU byte count for next frame. * Used for fragmentation and bursting, but not 11n aggregation. * Same as "len", but for next frame. Set to 0 if not applicable. */ __le16 next_frame_len; __le32 tx_flags; /* TX_CMD_FLG_* */ u8 rate; /* Index of recipient station in uCode's station table */ u8 sta_id; u8 tid_tspec; u8 sec_ctl; u8 key[16]; union { u8 byte[8]; __le16 word[4]; __le32 dw[2]; } tkip_mic; __le32 next_frame_info; union { __le32 life_time; __le32 attempt; } stop_time; u8 supp_rates[2]; u8 rts_retry_limit; /*byte 50 */ u8 data_retry_limit; /*byte 51 */ union { __le16 pm_frame_timeout; __le16 attempt_duration; } timeout; /* * Duration of EDCA burst Tx Opportunity, in 32-usec units. * Set this if txop time is not specified by HCCA protocol (e.g. by AP). */ __le16 driver_txop; /* * MAC header goes here, followed by 2 bytes padding if MAC header * length is 26 or 30 bytes, followed by payload data */ union { DECLARE_FLEX_ARRAY(u8, payload); DECLARE_FLEX_ARRAY(struct ieee80211_hdr, hdr); }; } __packed; /* * C_TX = 0x1c (response) */ struct il3945_tx_resp { u8 failure_rts; u8 failure_frame; u8 bt_kill_count; u8 rate; __le32 wireless_media_time; __le32 status; /* TX status */ } __packed; /* * 4965 uCode updates these Tx attempt count values in host DRAM. * Used for managing Tx retries when expecting block-acks. * Driver should set these fields to 0. */ struct il_dram_scratch { u8 try_cnt; /* Tx attempts */ u8 bt_kill_cnt; /* Tx attempts blocked by Bluetooth device */ __le16 reserved; } __packed; struct il_tx_cmd { /* * MPDU byte count: * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size, * + 8 byte IV for CCM or TKIP (not used for WEP) * + Data payload * + 8-byte MIC (not used for CCM/WEP) * NOTE: Does not include Tx command bytes, post-MAC pad bytes, * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i * Range: 14-2342 bytes. */ __le16 len; /* * MPDU or MSDU byte count for next frame. * Used for fragmentation and bursting, but not 11n aggregation. * Same as "len", but for next frame. Set to 0 if not applicable. */ __le16 next_frame_len; __le32 tx_flags; /* TX_CMD_FLG_* */ /* uCode may modify this field of the Tx command (in host DRAM!). * Driver must also set dram_lsb_ptr and dram_msb_ptr in this cmd. */ struct il_dram_scratch scratch; /* Rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is cleared. */ __le32 rate_n_flags; /* RATE_MCS_* */ /* Index of destination station in uCode's station table */ u8 sta_id; /* Type of security encryption: CCM or TKIP */ u8 sec_ctl; /* TX_CMD_SEC_* */ /* * Index into rate table (see C_TX_LINK_QUALITY_CMD) for initial * Tx attempt, if TX_CMD_FLG_STA_RATE_MSK is set. Normally "0" for * data frames, this field may be used to selectively reduce initial * rate (via non-0 value) for special frames (e.g. management), while * still supporting rate scaling for all frames. */ u8 initial_rate_idx; u8 reserved; u8 key[16]; __le16 next_frame_flags; __le16 reserved2; union { __le32 life_time; __le32 attempt; } stop_time; /* Host DRAM physical address pointer to "scratch" in this command. * Must be dword aligned. "0" in dram_lsb_ptr disables usage. */ __le32 dram_lsb_ptr; u8 dram_msb_ptr; u8 rts_retry_limit; /*byte 50 */ u8 data_retry_limit; /*byte 51 */ u8 tid_tspec; union { __le16 pm_frame_timeout; __le16 attempt_duration; } timeout; /* * Duration of EDCA burst Tx Opportunity, in 32-usec units. * Set this if txop time is not specified by HCCA protocol (e.g. by AP). */ __le16 driver_txop; /* * MAC header goes here, followed by 2 bytes padding if MAC header * length is 26 or 30 bytes, followed by payload data */ u8 payload[0]; struct ieee80211_hdr hdr[]; } __packed; /* TX command response is sent after *3945* transmission attempts. * * NOTES: * * TX_STATUS_FAIL_NEXT_FRAG * * If the fragment flag in the MAC header for the frame being transmitted * is set and there is insufficient time to transmit the next frame, the * TX status will be returned with 'TX_STATUS_FAIL_NEXT_FRAG'. * * TX_STATUS_FIFO_UNDERRUN * * Indicates the host did not provide bytes to the FIFO fast enough while * a TX was in progress. * * TX_STATUS_FAIL_MGMNT_ABORT * * This status is only possible if the ABORT ON MGMT RX parameter was * set to true with the TX command. * * If the MSB of the status parameter is set then an abort sequence is * required. This sequence consists of the host activating the TX Abort * control line, and then waiting for the TX Abort command response. This * indicates that a the device is no longer in a transmit state, and that the * command FIFO has been cleared. The host must then deactivate the TX Abort * control line. Receiving is still allowed in this case. */ enum { TX_3945_STATUS_SUCCESS = 0x01, TX_3945_STATUS_DIRECT_DONE = 0x02, TX_3945_STATUS_FAIL_SHORT_LIMIT = 0x82, TX_3945_STATUS_FAIL_LONG_LIMIT = 0x83, TX_3945_STATUS_FAIL_FIFO_UNDERRUN = 0x84, TX_3945_STATUS_FAIL_MGMNT_ABORT = 0x85, TX_3945_STATUS_FAIL_NEXT_FRAG = 0x86, TX_3945_STATUS_FAIL_LIFE_EXPIRE = 0x87, TX_3945_STATUS_FAIL_DEST_PS = 0x88, TX_3945_STATUS_FAIL_ABORTED = 0x89, TX_3945_STATUS_FAIL_BT_RETRY = 0x8a, TX_3945_STATUS_FAIL_STA_INVALID = 0x8b, TX_3945_STATUS_FAIL_FRAG_DROPPED = 0x8c, TX_3945_STATUS_FAIL_TID_DISABLE = 0x8d, TX_3945_STATUS_FAIL_FRAME_FLUSHED = 0x8e, TX_3945_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f, TX_3945_STATUS_FAIL_TX_LOCKED = 0x90, TX_3945_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91, }; /* * TX command response is sent after *4965* transmission attempts. * * both postpone and abort status are expected behavior from uCode. there is * no special operation required from driver; except for RFKILL_FLUSH, * which required tx flush host command to flush all the tx frames in queues */ enum { TX_STATUS_SUCCESS = 0x01, TX_STATUS_DIRECT_DONE = 0x02, /* postpone TX */ TX_STATUS_POSTPONE_DELAY = 0x40, TX_STATUS_POSTPONE_FEW_BYTES = 0x41, TX_STATUS_POSTPONE_QUIET_PERIOD = 0x43, TX_STATUS_POSTPONE_CALC_TTAK = 0x44, /* abort TX */ TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY = 0x81, TX_STATUS_FAIL_SHORT_LIMIT = 0x82, TX_STATUS_FAIL_LONG_LIMIT = 0x83, TX_STATUS_FAIL_FIFO_UNDERRUN = 0x84, TX_STATUS_FAIL_DRAIN_FLOW = 0x85, TX_STATUS_FAIL_RFKILL_FLUSH = 0x86, TX_STATUS_FAIL_LIFE_EXPIRE = 0x87, TX_STATUS_FAIL_DEST_PS = 0x88, TX_STATUS_FAIL_HOST_ABORTED = 0x89, TX_STATUS_FAIL_BT_RETRY = 0x8a, TX_STATUS_FAIL_STA_INVALID = 0x8b, TX_STATUS_FAIL_FRAG_DROPPED = 0x8c, TX_STATUS_FAIL_TID_DISABLE = 0x8d, TX_STATUS_FAIL_FIFO_FLUSHED = 0x8e, TX_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f, TX_STATUS_FAIL_PASSIVE_NO_RX = 0x90, TX_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91, }; #define TX_PACKET_MODE_REGULAR 0x0000 #define TX_PACKET_MODE_BURST_SEQ 0x0100 #define TX_PACKET_MODE_BURST_FIRST 0x0200 enum { TX_POWER_PA_NOT_ACTIVE = 0x0, }; enum { TX_STATUS_MSK = 0x000000ff, /* bits 0:7 */ TX_STATUS_DELAY_MSK = 0x00000040, TX_STATUS_ABORT_MSK = 0x00000080, TX_PACKET_MODE_MSK = 0x0000ff00, /* bits 8:15 */ TX_FIFO_NUMBER_MSK = 0x00070000, /* bits 16:18 */ TX_RESERVED = 0x00780000, /* bits 19:22 */ TX_POWER_PA_DETECT_MSK = 0x7f800000, /* bits 23:30 */ TX_ABORT_REQUIRED_MSK = 0x80000000, /* bits 31:31 */ }; /* ******************************* * TX aggregation status ******************************* */ enum { AGG_TX_STATE_TRANSMITTED = 0x00, AGG_TX_STATE_UNDERRUN_MSK = 0x01, AGG_TX_STATE_FEW_BYTES_MSK = 0x04, AGG_TX_STATE_ABORT_MSK = 0x08, AGG_TX_STATE_LAST_SENT_TTL_MSK = 0x10, AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK = 0x20, AGG_TX_STATE_SCD_QUERY_MSK = 0x80, AGG_TX_STATE_TEST_BAD_CRC32_MSK = 0x100, AGG_TX_STATE_RESPONSE_MSK = 0x1ff, AGG_TX_STATE_DUMP_TX_MSK = 0x200, AGG_TX_STATE_DELAY_TX_MSK = 0x400 }; #define AGG_TX_STATUS_MSK 0x00000fff /* bits 0:11 */ #define AGG_TX_TRY_MSK 0x0000f000 /* bits 12:15 */ #define AGG_TX_STATE_LAST_SENT_MSK (AGG_TX_STATE_LAST_SENT_TTL_MSK | \ AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK) /* # tx attempts for first frame in aggregation */ #define AGG_TX_STATE_TRY_CNT_POS 12 #define AGG_TX_STATE_TRY_CNT_MSK 0xf000 /* Command ID and sequence number of Tx command for this frame */ #define AGG_TX_STATE_SEQ_NUM_POS 16 #define AGG_TX_STATE_SEQ_NUM_MSK 0xffff0000 /* * C_TX = 0x1c (response) * * This response may be in one of two slightly different formats, indicated * by the frame_count field: * * 1) No aggregation (frame_count == 1). This reports Tx results for * a single frame. Multiple attempts, at various bit rates, may have * been made for this frame. * * 2) Aggregation (frame_count > 1). This reports Tx results for * 2 or more frames that used block-acknowledge. All frames were * transmitted at same rate. Rate scaling may have been used if first * frame in this new agg block failed in previous agg block(s). * * Note that, for aggregation, ACK (block-ack) status is not delivered here; * block-ack has not been received by the time the 4965 device records * this status. * This status relates to reasons the tx might have been blocked or aborted * within the sending station (this 4965 device), rather than whether it was * received successfully by the destination station. */ struct agg_tx_status { __le16 status; __le16 sequence; } __packed; struct il4965_tx_resp { u8 frame_count; /* 1 no aggregation, >1 aggregation */ u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */ u8 failure_rts; /* # failures due to unsuccessful RTS */ u8 failure_frame; /* # failures due to no ACK (unused for agg) */ /* For non-agg: Rate at which frame was successful. * For agg: Rate at which all frames were transmitted. */ __le32 rate_n_flags; /* RATE_MCS_* */ /* For non-agg: RTS + CTS + frame tx attempts time + ACK. * For agg: RTS + CTS + aggregation tx time + block-ack time. */ __le16 wireless_media_time; /* uSecs */ __le16 reserved; __le32 pa_power1; /* RF power amplifier measurement (not used) */ __le32 pa_power2; /* * For non-agg: frame status TX_STATUS_* * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status * fields follow this one, up to frame_count. * Bit fields: * 11- 0: AGG_TX_STATE_* status code * 15-12: Retry count for 1st frame in aggregation (retries * occur if tx failed for this frame when it was a * member of a previous aggregation block). If rate * scaling is used, retry count indicates the rate * table entry used for all frames in the new agg. * 31-16: Sequence # for this frame's Tx cmd (not SSN!) */ union { __le32 status; DECLARE_FLEX_ARRAY(struct agg_tx_status, agg_status); /* for each agg frame */ } u; } __packed; /* * N_COMPRESSED_BA = 0xc5 (response only, not a command) * * Reports Block-Acknowledge from recipient station */ struct il_compressed_ba_resp { __le32 sta_addr_lo32; __le16 sta_addr_hi16; __le16 reserved; /* Index of recipient (BA-sending) station in uCode's station table */ u8 sta_id; u8 tid; __le16 seq_ctl; __le64 bitmap; __le16 scd_flow; __le16 scd_ssn; } __packed; /* * C_TX_PWR_TBL = 0x97 (command, has simple generic response) * * See details under "TXPOWER" in 4965.h. */ struct il3945_txpowertable_cmd { u8 band; /* 0: 5 GHz, 1: 2.4 GHz */ u8 reserved; __le16 channel; struct il3945_power_per_rate power[IL_MAX_RATES]; } __packed; struct il4965_txpowertable_cmd { u8 band; /* 0: 5 GHz, 1: 2.4 GHz */ u8 reserved; __le16 channel; struct il4965_tx_power_db tx_power; } __packed; /** * struct il3945_rate_scaling_cmd - Rate Scaling Command & Response * * C_RATE_SCALE = 0x47 (command, has simple generic response) * * NOTE: The table of rates passed to the uCode via the * RATE_SCALE command sets up the corresponding order of * rates used for all related commands, including rate * masks, etc. * * For example, if you set 9MB (PLCP 0x0f) as the first * rate in the rate table, the bit mask for that rate * when passed through ofdm_basic_rates on the C_RXON * command would be bit 0 (1 << 0) */ struct il3945_rate_scaling_info { __le16 rate_n_flags; u8 try_cnt; u8 next_rate_idx; } __packed; struct il3945_rate_scaling_cmd { u8 table_id; u8 reserved[3]; struct il3945_rate_scaling_info table[IL_MAX_RATES]; } __packed; /*RS_NEW_API: only TLC_RTS remains and moved to bit 0 */ #define LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK (1 << 0) /* # of EDCA prioritized tx fifos */ #define LINK_QUAL_AC_NUM AC_NUM /* # entries in rate scale table to support Tx retries */ #define LINK_QUAL_MAX_RETRY_NUM 16 /* Tx antenna selection values */ #define LINK_QUAL_ANT_A_MSK (1 << 0) #define LINK_QUAL_ANT_B_MSK (1 << 1) #define LINK_QUAL_ANT_MSK (LINK_QUAL_ANT_A_MSK|LINK_QUAL_ANT_B_MSK) /** * struct il_link_qual_general_params * * Used in C_TX_LINK_QUALITY_CMD */ struct il_link_qual_general_params { u8 flags; /* No entries at or above this (driver chosen) idx contain MIMO */ u8 mimo_delimiter; /* Best single antenna to use for single stream (legacy, SISO). */ u8 single_stream_ant_msk; /* LINK_QUAL_ANT_* */ /* Best antennas to use for MIMO (unused for 4965, assumes both). */ u8 dual_stream_ant_msk; /* LINK_QUAL_ANT_* */ /* * If driver needs to use different initial rates for different * EDCA QOS access categories (as implemented by tx fifos 0-3), * this table will set that up, by indicating the idxes in the * rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table at which to start. * Otherwise, driver should set all entries to 0. * * Entry usage: * 0 = Background, 1 = Best Effort (normal), 2 = Video, 3 = Voice * TX FIFOs above 3 use same value (typically 0) as TX FIFO 3. */ u8 start_rate_idx[LINK_QUAL_AC_NUM]; } __packed; #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) /* 4 milliseconds */ #define LINK_QUAL_AGG_TIME_LIMIT_MAX (8000) #define LINK_QUAL_AGG_TIME_LIMIT_MIN (100) #define LINK_QUAL_AGG_DISABLE_START_DEF (3) #define LINK_QUAL_AGG_DISABLE_START_MAX (255) #define LINK_QUAL_AGG_DISABLE_START_MIN (0) #define LINK_QUAL_AGG_FRAME_LIMIT_DEF (31) #define LINK_QUAL_AGG_FRAME_LIMIT_MAX (63) #define LINK_QUAL_AGG_FRAME_LIMIT_MIN (0) /** * struct il_link_qual_agg_params * * Used in C_TX_LINK_QUALITY_CMD */ struct il_link_qual_agg_params { /* *Maximum number of uSec in aggregation. * default set to 4000 (4 milliseconds) if not configured in .cfg */ __le16 agg_time_limit; /* * Number of Tx retries allowed for a frame, before that frame will * no longer be considered for the start of an aggregation sequence * (scheduler will then try to tx it as single frame). * Driver should set this to 3. */ u8 agg_dis_start_th; /* * Maximum number of frames in aggregation. * 0 = no limit (default). 1 = no aggregation. * Other values = max # frames in aggregation. */ u8 agg_frame_cnt_limit; __le32 reserved; } __packed; /* * C_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response) * * For 4965 devices only; 3945 uses C_RATE_SCALE. * * Each station in the 4965 device's internal station table has its own table * of 16 * Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when * an ACK is not received. This command replaces the entire table for * one station. * * NOTE: Station must already be in 4965 device's station table. * Use C_ADD_STA. * * The rate scaling procedures described below work well. Of course, other * procedures are possible, and may work better for particular environments. * * * FILLING THE RATE TBL * * Given a particular initial rate and mode, as determined by the rate * scaling algorithm described below, the Linux driver uses the following * formula to fill the rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table in the * Link Quality command: * * * 1) If using High-throughput (HT) (SISO or MIMO) initial rate: * a) Use this same initial rate for first 3 entries. * b) Find next lower available rate using same mode (SISO or MIMO), * use for next 3 entries. If no lower rate available, switch to * legacy mode (no HT40 channel, no MIMO, no short guard interval). * c) If using MIMO, set command's mimo_delimiter to number of entries * using MIMO (3 or 6). * d) After trying 2 HT rates, switch to legacy mode (no HT40 channel, * no MIMO, no short guard interval), at the next lower bit rate * (e.g. if second HT bit rate was 54, try 48 legacy), and follow * legacy procedure for remaining table entries. * * 2) If using legacy initial rate: * a) Use the initial rate for only one entry. * b) For each following entry, reduce the rate to next lower available * rate, until reaching the lowest available rate. * c) When reducing rate, also switch antenna selection. * d) Once lowest available rate is reached, repeat this rate until * rate table is filled (16 entries), switching antenna each entry. * * * ACCUMULATING HISTORY * * The rate scaling algorithm for 4965 devices, as implemented in Linux driver, * uses two sets of frame Tx success history: One for the current/active * modulation mode, and one for a speculative/search mode that is being * attempted. If the speculative mode turns out to be more effective (i.e. * actual transfer rate is better), then the driver continues to use the * speculative mode as the new current active mode. * * Each history set contains, separately for each possible rate, data for a * sliding win of the 62 most recent tx attempts at that rate. The data * includes a shifting bitmap of success(1)/failure(0), and sums of successful * and attempted frames, from which the driver can additionally calculate a * success ratio (success / attempted) and number of failures * (attempted - success), and control the size of the win (attempted). * The driver uses the bit map to remove successes from the success sum, as * the oldest tx attempts fall out of the win. * * When the 4965 device makes multiple tx attempts for a given frame, each * attempt might be at a different rate, and have different modulation * characteristics (e.g. antenna, fat channel, short guard interval), as set * up in the rate scaling table in the Link Quality command. The driver must * determine which rate table entry was used for each tx attempt, to determine * which rate-specific history to update, and record only those attempts that * match the modulation characteristics of the history set. * * When using block-ack (aggregation), all frames are transmitted at the same * rate, since there is no per-attempt acknowledgment from the destination * station. The Tx response struct il_tx_resp indicates the Tx rate in * rate_n_flags field. After receiving a block-ack, the driver can update * history for the entire block all at once. * * * FINDING BEST STARTING RATE: * * When working with a selected initial modulation mode (see below), the * driver attempts to find a best initial rate. The initial rate is the * first entry in the Link Quality command's rate table. * * 1) Calculate actual throughput (success ratio * expected throughput, see * table below) for current initial rate. Do this only if enough frames * have been attempted to make the value meaningful: at least 6 failed * tx attempts, or at least 8 successes. If not enough, don't try rate * scaling yet. * * 2) Find available rates adjacent to current initial rate. Available means: * a) supported by hardware && * b) supported by association && * c) within any constraints selected by user * * 3) Gather measured throughputs for adjacent rates. These might not have * enough history to calculate a throughput. That's okay, we might try * using one of them anyway! * * 4) Try decreasing rate if, for current rate: * a) success ratio is < 15% || * b) lower adjacent rate has better measured throughput || * c) higher adjacent rate has worse throughput, and lower is unmeasured * * As a sanity check, if decrease was determined above, leave rate * unchanged if: * a) lower rate unavailable * b) success ratio at current rate > 85% (very good) * c) current measured throughput is better than expected throughput * of lower rate (under perfect 100% tx conditions, see table below) * * 5) Try increasing rate if, for current rate: * a) success ratio is < 15% || * b) both adjacent rates' throughputs are unmeasured (try it!) || * b) higher adjacent rate has better measured throughput || * c) lower adjacent rate has worse throughput, and higher is unmeasured * * As a sanity check, if increase was determined above, leave rate * unchanged if: * a) success ratio at current rate < 70%. This is not particularly * good performance; higher rate is sure to have poorer success. * * 6) Re-evaluate the rate after each tx frame. If working with block- * acknowledge, history and stats may be calculated for the entire * block (including prior history that fits within the history wins), * before re-evaluation. * * FINDING BEST STARTING MODULATION MODE: * * After working with a modulation mode for a "while" (and doing rate scaling), * the driver searches for a new initial mode in an attempt to improve * throughput. The "while" is measured by numbers of attempted frames: * * For legacy mode, search for new mode after: * 480 successful frames, or 160 failed frames * For high-throughput modes (SISO or MIMO), search for new mode after: * 4500 successful frames, or 400 failed frames * * Mode switch possibilities are (3 for each mode): * * For legacy: * Change antenna, try SISO (if HT association), try MIMO (if HT association) * For SISO: * Change antenna, try MIMO, try shortened guard interval (SGI) * For MIMO: * Try SISO antenna A, SISO antenna B, try shortened guard interval (SGI) * * When trying a new mode, use the same bit rate as the old/current mode when * trying antenna switches and shortened guard interval. When switching to * SISO from MIMO or legacy, or to MIMO from SISO or legacy, use a rate * for which the expected throughput (under perfect conditions) is about the * same or slightly better than the actual measured throughput delivered by * the old/current mode. * * Actual throughput can be estimated by multiplying the expected throughput * by the success ratio (successful / attempted tx frames). Frame size is * not considered in this calculation; it assumes that frame size will average * out to be fairly consistent over several samples. The following are * metric values for expected throughput assuming 100% success ratio. * Only G band has support for CCK rates: * * RATE: 1 2 5 11 6 9 12 18 24 36 48 54 60 * * G: 7 13 35 58 40 57 72 98 121 154 177 186 186 * A: 0 0 0 0 40 57 72 98 121 154 177 186 186 * SISO 20MHz: 0 0 0 0 42 42 76 102 124 159 183 193 202 * SGI SISO 20MHz: 0 0 0 0 46 46 82 110 132 168 192 202 211 * MIMO 20MHz: 0 0 0 0 74 74 123 155 179 214 236 244 251 * SGI MIMO 20MHz: 0 0 0 0 81 81 131 164 188 222 243 251 257 * SISO 40MHz: 0 0 0 0 77 77 127 160 184 220 242 250 257 * SGI SISO 40MHz: 0 0 0 0 83 83 135 169 193 229 250 257 264 * MIMO 40MHz: 0 0 0 0 123 123 182 214 235 264 279 285 289 * SGI MIMO 40MHz: 0 0 0 0 131 131 191 222 242 270 284 289 293 * * After the new mode has been tried for a short while (minimum of 6 failed * frames or 8 successful frames), compare success ratio and actual throughput * estimate of the new mode with the old. If either is better with the new * mode, continue to use the new mode. * * Continue comparing modes until all 3 possibilities have been tried. * If moving from legacy to HT, try all 3 possibilities from the new HT * mode. After trying all 3, a best mode is found. Continue to use this mode * for the longer "while" described above (e.g. 480 successful frames for * legacy), and then repeat the search process. * */ struct il_link_quality_cmd { /* Index of destination/recipient station in uCode's station table */ u8 sta_id; u8 reserved1; __le16 control; /* not used */ struct il_link_qual_general_params general_params; struct il_link_qual_agg_params agg_params; /* * Rate info; when using rate-scaling, Tx command's initial_rate_idx * specifies 1st Tx rate attempted, via idx into this table. * 4965 devices works its way through table when retrying Tx. */ struct { __le32 rate_n_flags; /* RATE_MCS_*, RATE_* */ } rs_table[LINK_QUAL_MAX_RETRY_NUM]; __le32 reserved2; } __packed; /* * BT configuration enable flags: * bit 0 - 1: BT channel announcement enabled * 0: disable * bit 1 - 1: priority of BT device enabled * 0: disable */ #define BT_COEX_DISABLE (0x0) #define BT_ENABLE_CHANNEL_ANNOUNCE BIT(0) #define BT_ENABLE_PRIORITY BIT(1) #define BT_COEX_ENABLE (BT_ENABLE_CHANNEL_ANNOUNCE | BT_ENABLE_PRIORITY) #define BT_LEAD_TIME_DEF (0x1E) #define BT_MAX_KILL_DEF (0x5) /* * C_BT_CONFIG = 0x9b (command, has simple generic response) * * 3945 and 4965 devices support hardware handshake with Bluetooth device on * same platform. Bluetooth device alerts wireless device when it will Tx; * wireless device can delay or kill its own Tx to accommodate. */ struct il_bt_cmd { u8 flags; u8 lead_time; u8 max_kill; u8 reserved; __le32 kill_ack_mask; __le32 kill_cts_mask; } __packed; /****************************************************************************** * (6) * Spectrum Management (802.11h) Commands, Responses, Notifications: * *****************************************************************************/ /* * Spectrum Management */ #define MEASUREMENT_FILTER_FLAG (RXON_FILTER_PROMISC_MSK | \ RXON_FILTER_CTL2HOST_MSK | \ RXON_FILTER_ACCEPT_GRP_MSK | \ RXON_FILTER_DIS_DECRYPT_MSK | \ RXON_FILTER_DIS_GRP_DECRYPT_MSK | \ RXON_FILTER_ASSOC_MSK | \ RXON_FILTER_BCON_AWARE_MSK) struct il_measure_channel { __le32 duration; /* measurement duration in extended beacon * format */ u8 channel; /* channel to measure */ u8 type; /* see enum il_measure_type */ __le16 reserved; } __packed; /* * C_SPECTRUM_MEASUREMENT = 0x74 (command) */ struct il_spectrum_cmd { __le16 len; /* number of bytes starting from token */ u8 token; /* token id */ u8 id; /* measurement id -- 0 or 1 */ u8 origin; /* 0 = TGh, 1 = other, 2 = TGk */ u8 periodic; /* 1 = periodic */ __le16 path_loss_timeout; __le32 start_time; /* start time in extended beacon format */ __le32 reserved2; __le32 flags; /* rxon flags */ __le32 filter_flags; /* rxon filter flags */ __le16 channel_count; /* minimum 1, maximum 10 */ __le16 reserved3; struct il_measure_channel channels[10]; } __packed; /* * C_SPECTRUM_MEASUREMENT = 0x74 (response) */ struct il_spectrum_resp { u8 token; u8 id; /* id of the prior command replaced, or 0xff */ __le16 status; /* 0 - command will be handled * 1 - cannot handle (conflicts with another * measurement) */ } __packed; enum il_measurement_state { IL_MEASUREMENT_START = 0, IL_MEASUREMENT_STOP = 1, }; enum il_measurement_status { IL_MEASUREMENT_OK = 0, IL_MEASUREMENT_CONCURRENT = 1, IL_MEASUREMENT_CSA_CONFLICT = 2, IL_MEASUREMENT_TGH_CONFLICT = 3, /* 4-5 reserved */ IL_MEASUREMENT_STOPPED = 6, IL_MEASUREMENT_TIMEOUT = 7, IL_MEASUREMENT_PERIODIC_FAILED = 8, }; #define NUM_ELEMENTS_IN_HISTOGRAM 8 struct il_measurement_histogram { __le32 ofdm[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 0.8usec counts */ __le32 cck[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 1usec counts */ } __packed; /* clear channel availability counters */ struct il_measurement_cca_counters { __le32 ofdm; __le32 cck; } __packed; enum il_measure_type { IL_MEASURE_BASIC = (1 << 0), IL_MEASURE_CHANNEL_LOAD = (1 << 1), IL_MEASURE_HISTOGRAM_RPI = (1 << 2), IL_MEASURE_HISTOGRAM_NOISE = (1 << 3), IL_MEASURE_FRAME = (1 << 4), /* bits 5:6 are reserved */ IL_MEASURE_IDLE = (1 << 7), }; /* * N_SPECTRUM_MEASUREMENT = 0x75 (notification only, not a command) */ struct il_spectrum_notification { u8 id; /* measurement id -- 0 or 1 */ u8 token; u8 channel_idx; /* idx in measurement channel list */ u8 state; /* 0 - start, 1 - stop */ __le32 start_time; /* lower 32-bits of TSF */ u8 band; /* 0 - 5.2GHz, 1 - 2.4GHz */ u8 channel; u8 type; /* see enum il_measurement_type */ u8 reserved1; /* NOTE: cca_ofdm, cca_cck, basic_type, and histogram are only only * valid if applicable for measurement type requested. */ __le32 cca_ofdm; /* cca fraction time in 40Mhz clock periods */ __le32 cca_cck; /* cca fraction time in 44Mhz clock periods */ __le32 cca_time; /* channel load time in usecs */ u8 basic_type; /* 0 - bss, 1 - ofdm preamble, 2 - * unidentified */ u8 reserved2[3]; struct il_measurement_histogram histogram; __le32 stop_time; /* lower 32-bits of TSF */ __le32 status; /* see il_measurement_status */ } __packed; /****************************************************************************** * (7) * Power Management Commands, Responses, Notifications: * *****************************************************************************/ /** * struct il_powertable_cmd - Power Table Command * @flags: See below: * * C_POWER_TBL = 0x77 (command, has simple generic response) * * PM allow: * bit 0 - '0' Driver not allow power management * '1' Driver allow PM (use rest of parameters) * * uCode send sleep notifications: * bit 1 - '0' Don't send sleep notification * '1' send sleep notification (SEND_PM_NOTIFICATION) * * Sleep over DTIM * bit 2 - '0' PM have to walk up every DTIM * '1' PM could sleep over DTIM till listen Interval. * * PCI power managed * bit 3 - '0' (PCI_CFG_LINK_CTRL & 0x1) * '1' !(PCI_CFG_LINK_CTRL & 0x1) * * Fast PD * bit 4 - '1' Put radio to sleep when receiving frame for others * * Force sleep Modes * bit 31/30- '00' use both mac/xtal sleeps * '01' force Mac sleep * '10' force xtal sleep * '11' Illegal set * * NOTE: if sleep_interval[SLEEP_INTRVL_TBL_SIZE-1] > DTIM period then * ucode assume sleep over DTIM is allowed and we don't need to wake up * for every DTIM. */ #define IL_POWER_VEC_SIZE 5 #define IL_POWER_DRIVER_ALLOW_SLEEP_MSK cpu_to_le16(BIT(0)) #define IL_POWER_SLEEP_OVER_DTIM_MSK cpu_to_le16(BIT(2)) #define IL_POWER_PCI_PM_MSK cpu_to_le16(BIT(3)) struct il3945_powertable_cmd { __le16 flags; u8 reserved[2]; __le32 rx_data_timeout; __le32 tx_data_timeout; __le32 sleep_interval[IL_POWER_VEC_SIZE]; } __packed; struct il_powertable_cmd { __le16 flags; u8 keep_alive_seconds; /* 3945 reserved */ u8 debug_flags; /* 3945 reserved */ __le32 rx_data_timeout; __le32 tx_data_timeout; __le32 sleep_interval[IL_POWER_VEC_SIZE]; __le32 keep_alive_beacons; } __packed; /* * N_PM_SLEEP = 0x7A (notification only, not a command) * all devices identical. */ struct il_sleep_notification { u8 pm_sleep_mode; u8 pm_wakeup_src; __le16 reserved; __le32 sleep_time; __le32 tsf_low; __le32 bcon_timer; } __packed; /* Sleep states. all devices identical. */ enum { IL_PM_NO_SLEEP = 0, IL_PM_SLP_MAC = 1, IL_PM_SLP_FULL_MAC_UNASSOCIATE = 2, IL_PM_SLP_FULL_MAC_CARD_STATE = 3, IL_PM_SLP_PHY = 4, IL_PM_SLP_REPENT = 5, IL_PM_WAKEUP_BY_TIMER = 6, IL_PM_WAKEUP_BY_DRIVER = 7, IL_PM_WAKEUP_BY_RFKILL = 8, /* 3 reserved */ IL_PM_NUM_OF_MODES = 12, }; /* * N_CARD_STATE = 0xa1 (notification only, not a command) */ struct il_card_state_notif { __le32 flags; } __packed; #define HW_CARD_DISABLED 0x01 #define SW_CARD_DISABLED 0x02 #define CT_CARD_DISABLED 0x04 #define RXON_CARD_DISABLED 0x10 struct il_ct_kill_config { __le32 reserved; __le32 critical_temperature_M; __le32 critical_temperature_R; } __packed; /****************************************************************************** * (8) * Scan Commands, Responses, Notifications: * *****************************************************************************/ #define SCAN_CHANNEL_TYPE_PASSIVE cpu_to_le32(0) #define SCAN_CHANNEL_TYPE_ACTIVE cpu_to_le32(1) /** * struct il_scan_channel - entry in C_SCAN channel table * * One for each channel in the scan list. * Each channel can independently select: * 1) SSID for directed active scans * 2) Txpower setting (for rate specified within Tx command) * 3) How long to stay on-channel (behavior may be modified by quiet_time, * quiet_plcp_th, good_CRC_th) * * To avoid uCode errors, make sure the following are true (see comments * under struct il_scan_cmd about max_out_time and quiet_time): * 1) If using passive_dwell (i.e. passive_dwell != 0): * active_dwell <= passive_dwell (< max_out_time if max_out_time != 0) * 2) quiet_time <= active_dwell * 3) If restricting off-channel time (i.e. max_out_time !=0): * passive_dwell < max_out_time * active_dwell < max_out_time */ struct il3945_scan_channel { /* * type is defined as: * 0:0 1 = active, 0 = passive * 1:4 SSID direct bit map; if a bit is set, then corresponding * SSID IE is transmitted in probe request. * 5:7 reserved */ u8 type; u8 channel; /* band is selected by il3945_scan_cmd "flags" field */ struct il3945_tx_power tpc; __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */ __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */ } __packed; /* set number of direct probes u8 type */ #define IL39_SCAN_PROBE_MASK(n) ((BIT(n) | (BIT(n) - BIT(1)))) struct il_scan_channel { /* * type is defined as: * 0:0 1 = active, 0 = passive * 1:20 SSID direct bit map; if a bit is set, then corresponding * SSID IE is transmitted in probe request. * 21:31 reserved */ __le32 type; __le16 channel; /* band is selected by il_scan_cmd "flags" field */ u8 tx_gain; /* gain for analog radio */ u8 dsp_atten; /* gain for DSP */ __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */ __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */ } __packed; /* set number of direct probes __le32 type */ #define IL_SCAN_PROBE_MASK(n) cpu_to_le32((BIT(n) | (BIT(n) - BIT(1)))) /** * struct il_ssid_ie - directed scan network information element * * Up to 20 of these may appear in C_SCAN (Note: Only 4 are in * 3945 SCAN api), selected by "type" bit field in struct il_scan_channel; * each channel may select different ssids from among the 20 (4) entries. * SSID IEs get transmitted in reverse order of entry. */ struct il_ssid_ie { u8 id; u8 len; u8 ssid[32]; } __packed; #define PROBE_OPTION_MAX_3945 4 #define PROBE_OPTION_MAX 20 #define TX_CMD_LIFE_TIME_INFINITE cpu_to_le32(0xFFFFFFFF) #define IL_GOOD_CRC_TH_DISABLED 0 #define IL_GOOD_CRC_TH_DEFAULT cpu_to_le16(1) #define IL_GOOD_CRC_TH_NEVER cpu_to_le16(0xffff) #define IL_MAX_SCAN_SIZE 1024 #define IL_MAX_CMD_SIZE 4096 /* * C_SCAN = 0x80 (command) * * The hardware scan command is very powerful; the driver can set it up to * maintain (relatively) normal network traffic while doing a scan in the * background. The max_out_time and suspend_time control the ratio of how * long the device stays on an associated network channel ("service channel") * vs. how long it's away from the service channel, i.e. tuned to other channels * for scanning. * * max_out_time is the max time off-channel (in usec), and suspend_time * is how long (in "extended beacon" format) that the scan is "suspended" * after returning to the service channel. That is, suspend_time is the * time that we stay on the service channel, doing normal work, between * scan segments. The driver may set these parameters differently to support * scanning when associated vs. not associated, and light vs. heavy traffic * loads when associated. * * After receiving this command, the device's scan engine does the following; * * 1) Sends SCAN_START notification to driver * 2) Checks to see if it has time to do scan for one channel * 3) Sends NULL packet, with power-save (PS) bit set to 1, * to tell AP that we're going off-channel * 4) Tunes to first channel in scan list, does active or passive scan * 5) Sends SCAN_RESULT notification to driver * 6) Checks to see if it has time to do scan on *next* channel in list * 7) Repeats 4-6 until it no longer has time to scan the next channel * before max_out_time expires * 8) Returns to service channel * 9) Sends NULL packet with PS=0 to tell AP that we're back * 10) Stays on service channel until suspend_time expires * 11) Repeats entire process 2-10 until list is complete * 12) Sends SCAN_COMPLETE notification * * For fast, efficient scans, the scan command also has support for staying on * a channel for just a short time, if doing active scanning and getting no * responses to the transmitted probe request. This time is controlled by * quiet_time, and the number of received packets below which a channel is * considered "quiet" is controlled by quiet_plcp_threshold. * * For active scanning on channels that have regulatory restrictions against * blindly transmitting, the scan can listen before transmitting, to make sure * that there is already legitimate activity on the channel. If enough * packets are cleanly received on the channel (controlled by good_CRC_th, * typical value 1), the scan engine starts transmitting probe requests. * * Driver must use separate scan commands for 2.4 vs. 5 GHz bands. * * To avoid uCode errors, see timing restrictions described under * struct il_scan_channel. */ struct il3945_scan_cmd { __le16 len; u8 reserved0; u8 channel_count; /* # channels in channel list */ __le16 quiet_time; /* dwell only this # millisecs on quiet channel * (only for active scan) */ __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */ __le16 good_CRC_th; /* passive -> active promotion threshold */ __le16 reserved1; __le32 max_out_time; /* max usec to be away from associated (service) * channel */ __le32 suspend_time; /* pause scan this long (in "extended beacon * format") when returning to service channel: * 3945; 31:24 # beacons, 19:0 additional usec, * 4965; 31:22 # beacons, 21:0 additional usec. */ __le32 flags; /* RXON_FLG_* */ __le32 filter_flags; /* RXON_FILTER_* */ /* For active scans (set to all-0s for passive scans). * Does not include payload. Must specify Tx rate; no rate scaling. */ struct il3945_tx_cmd tx_cmd; /* For directed active scans (set to all-0s otherwise) */ struct il_ssid_ie direct_scan[PROBE_OPTION_MAX_3945]; /* * Probe request frame, followed by channel list. * * Size of probe request frame is specified by byte count in tx_cmd. * Channel list follows immediately after probe request frame. * Number of channels in list is specified by channel_count. * Each channel in list is of type: * * struct il3945_scan_channel channels[0]; * * NOTE: Only one band of channels can be scanned per pass. You * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait * for one scan to complete (i.e. receive N_SCAN_COMPLETE) * before requesting another scan. */ u8 data[]; } __packed; struct il_scan_cmd { __le16 len; u8 reserved0; u8 channel_count; /* # channels in channel list */ __le16 quiet_time; /* dwell only this # millisecs on quiet channel * (only for active scan) */ __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */ __le16 good_CRC_th; /* passive -> active promotion threshold */ __le16 rx_chain; /* RXON_RX_CHAIN_* */ __le32 max_out_time; /* max usec to be away from associated (service) * channel */ __le32 suspend_time; /* pause scan this long (in "extended beacon * format") when returning to service chnl: * 3945; 31:24 # beacons, 19:0 additional usec, * 4965; 31:22 # beacons, 21:0 additional usec. */ __le32 flags; /* RXON_FLG_* */ __le32 filter_flags; /* RXON_FILTER_* */ /* For active scans (set to all-0s for passive scans). * Does not include payload. Must specify Tx rate; no rate scaling. */ struct il_tx_cmd tx_cmd; /* For directed active scans (set to all-0s otherwise) */ struct il_ssid_ie direct_scan[PROBE_OPTION_MAX]; /* * Probe request frame, followed by channel list. * * Size of probe request frame is specified by byte count in tx_cmd. * Channel list follows immediately after probe request frame. * Number of channels in list is specified by channel_count. * Each channel in list is of type: * * struct il_scan_channel channels[0]; * * NOTE: Only one band of channels can be scanned per pass. You * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait * for one scan to complete (i.e. receive N_SCAN_COMPLETE) * before requesting another scan. */ u8 data[]; } __packed; /* Can abort will notify by complete notification with abort status. */ #define CAN_ABORT_STATUS cpu_to_le32(0x1) /* complete notification statuses */ #define ABORT_STATUS 0x2 /* * C_SCAN = 0x80 (response) */ struct il_scanreq_notification { __le32 status; /* 1: okay, 2: cannot fulfill request */ } __packed; /* * N_SCAN_START = 0x82 (notification only, not a command) */ struct il_scanstart_notification { __le32 tsf_low; __le32 tsf_high; __le32 beacon_timer; u8 channel; u8 band; u8 reserved[2]; __le32 status; } __packed; #define SCAN_OWNER_STATUS 0x1 #define MEASURE_OWNER_STATUS 0x2 #define IL_PROBE_STATUS_OK 0 #define IL_PROBE_STATUS_TX_FAILED BIT(0) /* error statuses combined with TX_FAILED */ #define IL_PROBE_STATUS_FAIL_TTL BIT(1) #define IL_PROBE_STATUS_FAIL_BT BIT(2) #define NUMBER_OF_STATS 1 /* first __le32 is good CRC */ /* * N_SCAN_RESULTS = 0x83 (notification only, not a command) */ struct il_scanresults_notification { u8 channel; u8 band; u8 probe_status; u8 num_probe_not_sent; /* not enough time to send */ __le32 tsf_low; __le32 tsf_high; __le32 stats[NUMBER_OF_STATS]; } __packed; /* * N_SCAN_COMPLETE = 0x84 (notification only, not a command) */ struct il_scancomplete_notification { u8 scanned_channels; u8 status; u8 last_channel; __le32 tsf_low; __le32 tsf_high; } __packed; /****************************************************************************** * (9) * IBSS/AP Commands and Notifications: * *****************************************************************************/ enum il_ibss_manager { IL_NOT_IBSS_MANAGER = 0, IL_IBSS_MANAGER = 1, }; /* * N_BEACON = 0x90 (notification only, not a command) */ struct il3945_beacon_notif { struct il3945_tx_resp beacon_notify_hdr; __le32 low_tsf; __le32 high_tsf; __le32 ibss_mgr_status; } __packed; struct il4965_beacon_notif { struct il4965_tx_resp beacon_notify_hdr; __le32 low_tsf; __le32 high_tsf; __le32 ibss_mgr_status; } __packed; /* * C_TX_BEACON= 0x91 (command, has simple generic response) */ struct il3945_tx_beacon_cmd { struct il3945_tx_cmd tx; __le16 tim_idx; u8 tim_size; u8 reserved1; struct ieee80211_hdr frame[]; /* beacon frame */ } __packed; struct il_tx_beacon_cmd { struct il_tx_cmd tx; __le16 tim_idx; u8 tim_size; u8 reserved1; struct ieee80211_hdr frame[]; /* beacon frame */ } __packed; /****************************************************************************** * (10) * Statistics Commands and Notifications: * *****************************************************************************/ #define IL_TEMP_CONVERT 260 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12 /* Used for passing to driver number of successes and failures per rate */ struct rate_histogram { union { __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS]; __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS]; __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS]; } success; union { __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS]; __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS]; __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS]; } failed; } __packed; /* stats command response */ struct iwl39_stats_rx_phy { __le32 ina_cnt; __le32 fina_cnt; __le32 plcp_err; __le32 crc32_err; __le32 overrun_err; __le32 early_overrun_err; __le32 crc32_good; __le32 false_alarm_cnt; __le32 fina_sync_err_cnt; __le32 sfd_timeout; __le32 fina_timeout; __le32 unresponded_rts; __le32 rxe_frame_limit_overrun; __le32 sent_ack_cnt; __le32 sent_cts_cnt; } __packed; struct iwl39_stats_rx_non_phy { __le32 bogus_cts; /* CTS received when not expecting CTS */ __le32 bogus_ack; /* ACK received when not expecting ACK */ __le32 non_bssid_frames; /* number of frames with BSSID that * doesn't belong to the STA BSSID */ __le32 filtered_frames; /* count frames that were dumped in the * filtering process */ __le32 non_channel_beacons; /* beacons with our bss id but not on * our serving channel */ } __packed; struct iwl39_stats_rx { struct iwl39_stats_rx_phy ofdm; struct iwl39_stats_rx_phy cck; struct iwl39_stats_rx_non_phy general; } __packed; struct iwl39_stats_tx { __le32 preamble_cnt; __le32 rx_detected_cnt; __le32 bt_prio_defer_cnt; __le32 bt_prio_kill_cnt; __le32 few_bytes_cnt; __le32 cts_timeout; __le32 ack_timeout; __le32 expected_ack_cnt; __le32 actual_ack_cnt; } __packed; struct stats_dbg { __le32 burst_check; __le32 burst_count; __le32 wait_for_silence_timeout_cnt; __le32 reserved[3]; } __packed; struct iwl39_stats_div { __le32 tx_on_a; __le32 tx_on_b; __le32 exec_time; __le32 probe_time; } __packed; struct iwl39_stats_general { __le32 temperature; struct stats_dbg dbg; __le32 sleep_time; __le32 slots_out; __le32 slots_idle; __le32 ttl_timestamp; struct iwl39_stats_div div; } __packed; struct stats_rx_phy { __le32 ina_cnt; __le32 fina_cnt; __le32 plcp_err; __le32 crc32_err; __le32 overrun_err; __le32 early_overrun_err; __le32 crc32_good; __le32 false_alarm_cnt; __le32 fina_sync_err_cnt; __le32 sfd_timeout; __le32 fina_timeout; __le32 unresponded_rts; __le32 rxe_frame_limit_overrun; __le32 sent_ack_cnt; __le32 sent_cts_cnt; __le32 sent_ba_rsp_cnt; __le32 dsp_self_kill; __le32 mh_format_err; __le32 re_acq_main_rssi_sum; __le32 reserved3; } __packed; struct stats_rx_ht_phy { __le32 plcp_err; __le32 overrun_err; __le32 early_overrun_err; __le32 crc32_good; __le32 crc32_err; __le32 mh_format_err; __le32 agg_crc32_good; __le32 agg_mpdu_cnt; __le32 agg_cnt; __le32 unsupport_mcs; } __packed; #define INTERFERENCE_DATA_AVAILABLE cpu_to_le32(1) struct stats_rx_non_phy { __le32 bogus_cts; /* CTS received when not expecting CTS */ __le32 bogus_ack; /* ACK received when not expecting ACK */ __le32 non_bssid_frames; /* number of frames with BSSID that * doesn't belong to the STA BSSID */ __le32 filtered_frames; /* count frames that were dumped in the * filtering process */ __le32 non_channel_beacons; /* beacons with our bss id but not on * our serving channel */ __le32 channel_beacons; /* beacons with our bss id and in our * serving channel */ __le32 num_missed_bcon; /* number of missed beacons */ __le32 adc_rx_saturation_time; /* count in 0.8us units the time the * ADC was in saturation */ __le32 ina_detection_search_time; /* total time (in 0.8us) searched * for INA */ __le32 beacon_silence_rssi_a; /* RSSI silence after beacon frame */ __le32 beacon_silence_rssi_b; /* RSSI silence after beacon frame */ __le32 beacon_silence_rssi_c; /* RSSI silence after beacon frame */ __le32 interference_data_flag; /* flag for interference data * availability. 1 when data is * available. */ __le32 channel_load; /* counts RX Enable time in uSec */ __le32 dsp_false_alarms; /* DSP false alarm (both OFDM * and CCK) counter */ __le32 beacon_rssi_a; __le32 beacon_rssi_b; __le32 beacon_rssi_c; __le32 beacon_energy_a; __le32 beacon_energy_b; __le32 beacon_energy_c; } __packed; struct stats_rx { struct stats_rx_phy ofdm; struct stats_rx_phy cck; struct stats_rx_non_phy general; struct stats_rx_ht_phy ofdm_ht; } __packed; /** * struct stats_tx_power - current tx power * * @ant_a: current tx power on chain a in 1/2 dB step * @ant_b: current tx power on chain b in 1/2 dB step * @ant_c: current tx power on chain c in 1/2 dB step */ struct stats_tx_power { u8 ant_a; u8 ant_b; u8 ant_c; u8 reserved; } __packed; struct stats_tx_non_phy_agg { __le32 ba_timeout; __le32 ba_reschedule_frames; __le32 scd_query_agg_frame_cnt; __le32 scd_query_no_agg; __le32 scd_query_agg; __le32 scd_query_mismatch; __le32 frame_not_ready; __le32 underrun; __le32 bt_prio_kill; __le32 rx_ba_rsp_cnt; } __packed; struct stats_tx { __le32 preamble_cnt; __le32 rx_detected_cnt; __le32 bt_prio_defer_cnt; __le32 bt_prio_kill_cnt; __le32 few_bytes_cnt; __le32 cts_timeout; __le32 ack_timeout; __le32 expected_ack_cnt; __le32 actual_ack_cnt; __le32 dump_msdu_cnt; __le32 burst_abort_next_frame_mismatch_cnt; __le32 burst_abort_missing_next_frame_cnt; __le32 cts_timeout_collision; __le32 ack_or_ba_timeout_collision; struct stats_tx_non_phy_agg agg; __le32 reserved1; } __packed; struct stats_div { __le32 tx_on_a; __le32 tx_on_b; __le32 exec_time; __le32 probe_time; __le32 reserved1; __le32 reserved2; } __packed; struct stats_general_common { __le32 temperature; /* radio temperature */ struct stats_dbg dbg; __le32 sleep_time; __le32 slots_out; __le32 slots_idle; __le32 ttl_timestamp; struct stats_div div; __le32 rx_enable_counter; /* * num_of_sos_states: * count the number of times we have to re-tune * in order to get out of bad PHY status */ __le32 num_of_sos_states; } __packed; struct stats_general { struct stats_general_common common; __le32 reserved2; __le32 reserved3; } __packed; #define UCODE_STATS_CLEAR_MSK (0x1 << 0) #define UCODE_STATS_FREQUENCY_MSK (0x1 << 1) #define UCODE_STATS_NARROW_BAND_MSK (0x1 << 2) /* * C_STATS = 0x9c, * all devices identical. * * This command triggers an immediate response containing uCode stats. * The response is in the same format as N_STATS 0x9d, below. * * If the CLEAR_STATS configuration flag is set, uCode will clear its * internal copy of the stats (counters) after issuing the response. * This flag does not affect N_STATSs after beacons (see below). * * If the DISABLE_NOTIF configuration flag is set, uCode will not issue * N_STATSs after received beacons (see below). This flag * does not affect the response to the C_STATS 0x9c itself. */ #define IL_STATS_CONF_CLEAR_STATS cpu_to_le32(0x1) /* see above */ #define IL_STATS_CONF_DISABLE_NOTIF cpu_to_le32(0x2) /* see above */ struct il_stats_cmd { __le32 configuration_flags; /* IL_STATS_CONF_* */ } __packed; /* * N_STATS = 0x9d (notification only, not a command) * * By default, uCode issues this notification after receiving a beacon * while associated. To disable this behavior, set DISABLE_NOTIF flag in the * C_STATS 0x9c, above. * * Statistics counters continue to increment beacon after beacon, but are * cleared when changing channels or when driver issues C_STATS * 0x9c with CLEAR_STATS bit set (see above). * * uCode also issues this notification during scans. uCode clears stats * appropriately so that each notification contains stats for only the * one channel that has just been scanned. */ #define STATS_REPLY_FLG_BAND_24G_MSK cpu_to_le32(0x2) #define STATS_REPLY_FLG_HT40_MODE_MSK cpu_to_le32(0x8) struct il3945_notif_stats { __le32 flag; struct iwl39_stats_rx rx; struct iwl39_stats_tx tx; struct iwl39_stats_general general; } __packed; struct il_notif_stats { __le32 flag; struct stats_rx rx; struct stats_tx tx; struct stats_general general; } __packed; /* * N_MISSED_BEACONS = 0xa2 (notification only, not a command) * * uCode send N_MISSED_BEACONS to driver when detect beacon missed * in regardless of how many missed beacons, which mean when driver receive the * notification, inside the command, it can find all the beacons information * which include number of total missed beacons, number of consecutive missed * beacons, number of beacons received and number of beacons expected to * receive. * * If uCode detected consecutive_missed_beacons > 5, it will reset the radio * in order to bring the radio/PHY back to working state; which has no relation * to when driver will perform sensitivity calibration. * * Driver should set it own missed_beacon_threshold to decide when to perform * sensitivity calibration based on number of consecutive missed beacons in * order to improve overall performance, especially in noisy environment. * */ #define IL_MISSED_BEACON_THRESHOLD_MIN (1) #define IL_MISSED_BEACON_THRESHOLD_DEF (5) #define IL_MISSED_BEACON_THRESHOLD_MAX IL_MISSED_BEACON_THRESHOLD_DEF struct il_missed_beacon_notif { __le32 consecutive_missed_beacons; __le32 total_missed_becons; __le32 num_expected_beacons; __le32 num_recvd_beacons; } __packed; /****************************************************************************** * (11) * Rx Calibration Commands: * * With the uCode used for open source drivers, most Tx calibration (except * for Tx Power) and most Rx calibration is done by uCode during the * "initialize" phase of uCode boot. Driver must calibrate only: * * 1) Tx power (depends on temperature), described elsewhere * 2) Receiver gain balance (optimize MIMO, and detect disconnected antennas) * 3) Receiver sensitivity (to optimize signal detection) * *****************************************************************************/ /** * C_SENSITIVITY = 0xa8 (command, has simple generic response) * * This command sets up the Rx signal detector for a sensitivity level that * is high enough to lock onto all signals within the associated network, * but low enough to ignore signals that are below a certain threshold, so as * not to have too many "false alarms". False alarms are signals that the * Rx DSP tries to lock onto, but then discards after determining that they * are noise. * * The optimum number of false alarms is between 5 and 50 per 200 TUs * (200 * 1024 uSecs, i.e. 204.8 milliseconds) of actual Rx time (i.e. * time listening, not transmitting). Driver must adjust sensitivity so that * the ratio of actual false alarms to actual Rx time falls within this range. * * While associated, uCode delivers N_STATSs after each * received beacon. These provide information to the driver to analyze the * sensitivity. Don't analyze stats that come in from scanning, or any * other non-associated-network source. Pertinent stats include: * * From "general" stats (struct stats_rx_non_phy): * * (beacon_energy_[abc] & 0x0FF00) >> 8 (unsigned, higher value is lower level) * Measure of energy of desired signal. Used for establishing a level * below which the device does not detect signals. * * (beacon_silence_rssi_[abc] & 0x0FF00) >> 8 (unsigned, units in dB) * Measure of background noise in silent period after beacon. * * channel_load * uSecs of actual Rx time during beacon period (varies according to * how much time was spent transmitting). * * From "cck" and "ofdm" stats (struct stats_rx_phy), separately: * * false_alarm_cnt * Signal locks abandoned early (before phy-level header). * * plcp_err * Signal locks abandoned late (during phy-level header). * * NOTE: Both false_alarm_cnt and plcp_err increment monotonically from * beacon to beacon, i.e. each value is an accumulation of all errors * before and including the latest beacon. Values will wrap around to 0 * after counting up to 2^32 - 1. Driver must differentiate vs. * previous beacon's values to determine # false alarms in the current * beacon period. * * Total number of false alarms = false_alarms + plcp_errs * * For OFDM, adjust the following table entries in struct il_sensitivity_cmd * (notice that the start points for OFDM are at or close to settings for * maximum sensitivity): * * START / MIN / MAX * HD_AUTO_CORR32_X1_TH_ADD_MIN_IDX 90 / 85 / 120 * HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_IDX 170 / 170 / 210 * HD_AUTO_CORR32_X4_TH_ADD_MIN_IDX 105 / 105 / 140 * HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_IDX 220 / 220 / 270 * * If actual rate of OFDM false alarms (+ plcp_errors) is too high * (greater than 50 for each 204.8 msecs listening), reduce sensitivity * by *adding* 1 to all 4 of the table entries above, up to the max for * each entry. Conversely, if false alarm rate is too low (less than 5 * for each 204.8 msecs listening), *subtract* 1 from each entry to * increase sensitivity. * * For CCK sensitivity, keep track of the following: * * 1). 20-beacon history of maximum background noise, indicated by * (beacon_silence_rssi_[abc] & 0x0FF00), units in dB, across the * 3 receivers. For any given beacon, the "silence reference" is * the maximum of last 60 samples (20 beacons * 3 receivers). * * 2). 10-beacon history of strongest signal level, as indicated * by (beacon_energy_[abc] & 0x0FF00) >> 8, across the 3 receivers, * i.e. the strength of the signal through the best receiver at the * moment. These measurements are "upside down", with lower values * for stronger signals, so max energy will be *minimum* value. * * Then for any given beacon, the driver must determine the *weakest* * of the strongest signals; this is the minimum level that needs to be * successfully detected, when using the best receiver at the moment. * "Max cck energy" is the maximum (higher value means lower energy!) * of the last 10 minima. Once this is determined, driver must add * a little margin by adding "6" to it. * * 3). Number of consecutive beacon periods with too few false alarms. * Reset this to 0 at the first beacon period that falls within the * "good" range (5 to 50 false alarms per 204.8 milliseconds rx). * * Then, adjust the following CCK table entries in struct il_sensitivity_cmd * (notice that the start points for CCK are at maximum sensitivity): * * START / MIN / MAX * HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX 125 / 125 / 200 * HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX 200 / 200 / 400 * HD_MIN_ENERGY_CCK_DET_IDX 100 / 0 / 100 * * If actual rate of CCK false alarms (+ plcp_errors) is too high * (greater than 50 for each 204.8 msecs listening), method for reducing * sensitivity is: * * 1) *Add* 3 to value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX, * up to max 400. * * 2) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX is < 160, * sensitivity has been reduced a significant amount; bring it up to * a moderate 161. Otherwise, *add* 3, up to max 200. * * 3) a) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX is > 160, * sensitivity has been reduced only a moderate or small amount; * *subtract* 2 from value in HD_MIN_ENERGY_CCK_DET_IDX, * down to min 0. Otherwise (if gain has been significantly reduced), * don't change the HD_MIN_ENERGY_CCK_DET_IDX value. * * b) Save a snapshot of the "silence reference". * * If actual rate of CCK false alarms (+ plcp_errors) is too low * (less than 5 for each 204.8 msecs listening), method for increasing * sensitivity is used only if: * * 1a) Previous beacon did not have too many false alarms * 1b) AND difference between previous "silence reference" and current * "silence reference" (prev - current) is 2 or more, * OR 2) 100 or more consecutive beacon periods have had rate of * less than 5 false alarms per 204.8 milliseconds rx time. * * Method for increasing sensitivity: * * 1) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX, * down to min 125. * * 2) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX, * down to min 200. * * 3) *Add* 2 to value in HD_MIN_ENERGY_CCK_DET_IDX, up to max 100. * * If actual rate of CCK false alarms (+ plcp_errors) is within good range * (between 5 and 50 for each 204.8 msecs listening): * * 1) Save a snapshot of the silence reference. * * 2) If previous beacon had too many CCK false alarms (+ plcp_errors), * give some extra margin to energy threshold by *subtracting* 8 * from value in HD_MIN_ENERGY_CCK_DET_IDX. * * For all cases (too few, too many, good range), make sure that the CCK * detection threshold (energy) is below the energy level for robust * detection over the past 10 beacon periods, the "Max cck energy". * Lower values mean higher energy; this means making sure that the value * in HD_MIN_ENERGY_CCK_DET_IDX is at or *above* "Max cck energy". * */ /* * Table entries in C_SENSITIVITY (struct il_sensitivity_cmd) */ #define HD_TBL_SIZE (11) /* number of entries */ #define HD_MIN_ENERGY_CCK_DET_IDX (0) /* table idxes */ #define HD_MIN_ENERGY_OFDM_DET_IDX (1) #define HD_AUTO_CORR32_X1_TH_ADD_MIN_IDX (2) #define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_IDX (3) #define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_IDX (4) #define HD_AUTO_CORR32_X4_TH_ADD_MIN_IDX (5) #define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_IDX (6) #define HD_BARKER_CORR_TH_ADD_MIN_IDX (7) #define HD_BARKER_CORR_TH_ADD_MIN_MRC_IDX (8) #define HD_AUTO_CORR40_X4_TH_ADD_MIN_IDX (9) #define HD_OFDM_ENERGY_TH_IN_IDX (10) /* Control field in struct il_sensitivity_cmd */ #define C_SENSITIVITY_CONTROL_DEFAULT_TBL cpu_to_le16(0) #define C_SENSITIVITY_CONTROL_WORK_TBL cpu_to_le16(1) /** * struct il_sensitivity_cmd * @control: (1) updates working table, (0) updates default table * @table: energy threshold values, use HD_* as idx into table * * Always use "1" in "control" to update uCode's working table and DSP. */ struct il_sensitivity_cmd { __le16 control; /* always use "1" */ __le16 table[HD_TBL_SIZE]; /* use HD_* as idx */ } __packed; /** * C_PHY_CALIBRATION = 0xb0 (command, has simple generic response) * * This command sets the relative gains of 4965 device's 3 radio receiver chains. * * After the first association, driver should accumulate signal and noise * stats from the N_STATSs that follow the first 20 * beacons from the associated network (don't collect stats that come * in from scanning, or any other non-network source). * * DISCONNECTED ANTENNA: * * Driver should determine which antennas are actually connected, by comparing * average beacon signal levels for the 3 Rx chains. Accumulate (add) the * following values over 20 beacons, one accumulator for each of the chains * a/b/c, from struct stats_rx_non_phy: * * beacon_rssi_[abc] & 0x0FF (unsigned, units in dB) * * Find the strongest signal from among a/b/c. Compare the other two to the * strongest. If any signal is more than 15 dB (times 20, unless you * divide the accumulated values by 20) below the strongest, the driver * considers that antenna to be disconnected, and should not try to use that * antenna/chain for Rx or Tx. If both A and B seem to be disconnected, * driver should declare the stronger one as connected, and attempt to use it * (A and B are the only 2 Tx chains!). * * * RX BALANCE: * * Driver should balance the 3 receivers (but just the ones that are connected * to antennas, see above) for gain, by comparing the average signal levels * detected during the silence after each beacon (background noise). * Accumulate (add) the following values over 20 beacons, one accumulator for * each of the chains a/b/c, from struct stats_rx_non_phy: * * beacon_silence_rssi_[abc] & 0x0FF (unsigned, units in dB) * * Find the weakest background noise level from among a/b/c. This Rx chain * will be the reference, with 0 gain adjustment. Attenuate other channels by * finding noise difference: * * (accum_noise[i] - accum_noise[reference]) / 30 * * The "30" adjusts the dB in the 20 accumulated samples to units of 1.5 dB. * For use in diff_gain_[abc] fields of struct il_calibration_cmd, the * driver should limit the difference results to a range of 0-3 (0-4.5 dB), * and set bit 2 to indicate "reduce gain". The value for the reference * (weakest) chain should be "0". * * diff_gain_[abc] bit fields: * 2: (1) reduce gain, (0) increase gain * 1-0: amount of gain, units of 1.5 dB */ /* Phy calibration command for series */ /* The default calibrate table size if not specified by firmware */ #define IL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE 18 enum { IL_PHY_CALIBRATE_DIFF_GAIN_CMD = 7, IL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE = 19, }; #define IL_MAX_PHY_CALIBRATE_TBL_SIZE (253) struct il_calib_hdr { u8 op_code; u8 first_group; u8 groups_num; u8 data_valid; } __packed; /* IL_PHY_CALIBRATE_DIFF_GAIN_CMD (7) */ struct il_calib_diff_gain_cmd { struct il_calib_hdr hdr; s8 diff_gain_a; /* see above */ s8 diff_gain_b; s8 diff_gain_c; u8 reserved1; } __packed; /****************************************************************************** * (12) * Miscellaneous Commands: * *****************************************************************************/ /* * LEDs Command & Response * C_LEDS = 0x48 (command, has simple generic response) * * For each of 3 possible LEDs (Activity/Link/Tech, selected by "id" field), * this command turns it on or off, or sets up a periodic blinking cycle. */ struct il_led_cmd { __le32 interval; /* "interval" in uSec */ u8 id; /* 1: Activity, 2: Link, 3: Tech */ u8 off; /* # intervals off while blinking; * "0", with >0 "on" value, turns LED on */ u8 on; /* # intervals on while blinking; * "0", regardless of "off", turns LED off */ u8 reserved; } __packed; /****************************************************************************** * (13) * Union of all expected notifications/responses: * *****************************************************************************/ #define IL_RX_FRAME_SIZE_MSK 0x00003fff struct il_rx_pkt { /* * The first 4 bytes of the RX frame header contain both the RX frame * size and some flags. * Bit fields: * 31: flag flush RB request * 30: flag ignore TC (terminal counter) request * 29: flag fast IRQ request * 28-14: Reserved * 13-00: RX frame size */ __le32 len_n_flags; struct il_cmd_header hdr; union { struct il3945_rx_frame rx_frame; struct il3945_tx_resp tx_resp; struct il3945_beacon_notif beacon_status; struct il_alive_resp alive_frame; struct il_spectrum_notification spectrum_notif; struct il_csa_notification csa_notif; struct il_error_resp err_resp; struct il_card_state_notif card_state_notif; struct il_add_sta_resp add_sta; struct il_rem_sta_resp rem_sta; struct il_sleep_notification sleep_notif; struct il_spectrum_resp spectrum; struct il_notif_stats stats; struct il_compressed_ba_resp compressed_ba; struct il_missed_beacon_notif missed_beacon; __le32 status; DECLARE_FLEX_ARRAY(u8, raw); } u; } __packed; #endif /* __il_commands_h__ */