1 /*- 2 * SPDX-License-Identifier: ISC 3 * 4 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 5 * Copyright (c) 2002-2008 Atheros Communications, Inc. 6 * 7 * Permission to use, copy, modify, and/or distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 * 19 * $FreeBSD$ 20 */ 21 22 #ifndef _DEV_ATH_DESC_H 23 #define _DEV_ATH_DESC_H 24 25 /* 26 * Transmit descriptor status. This structure is filled 27 * in only after the tx descriptor process method finds a 28 * ``done'' descriptor; at which point it returns something 29 * other than HAL_EINPROGRESS. 30 * 31 * Note that ts_antenna may not be valid for all h/w. It 32 * should be used only if non-zero. 33 */ 34 struct ath_tx_status { 35 uint16_t ts_seqnum; /* h/w assigned sequence number */ 36 uint16_t ts_pad1[1]; 37 uint32_t ts_tstamp; /* h/w assigned timestamp */ 38 uint8_t ts_status; /* frame status, 0 => xmit ok */ 39 uint8_t ts_rate; /* h/w transmit rate index */ 40 int8_t ts_rssi; /* tx ack RSSI */ 41 uint8_t ts_shortretry; /* # short retries */ 42 uint8_t ts_longretry; /* # long retries */ 43 uint8_t ts_virtcol; /* virtual collision count */ 44 uint8_t ts_antenna; /* antenna information */ 45 uint8_t ts_finaltsi; /* final transmit series index */ 46 /* 802.11n status */ 47 uint8_t ts_flags; /* misc flags */ 48 uint8_t ts_queue_id; /* AR9300: TX queue id */ 49 uint8_t ts_desc_id; /* AR9300: TX descriptor id */ 50 uint8_t ts_tid; /* TID */ 51 /* #define ts_rssi ts_rssi_combined */ 52 uint32_t ts_ba_low; /* blockack bitmap low */ 53 uint32_t ts_ba_high; /* blockack bitmap high */ 54 uint32_t ts_evm0; /* evm bytes */ 55 uint32_t ts_evm1; 56 uint32_t ts_evm2; 57 int8_t ts_rssi_ctl[3]; /* tx ack RSSI [ctl, chain 0-2] */ 58 int8_t ts_rssi_ext[3]; /* tx ack RSSI [ext, chain 0-2] */ 59 uint8_t ts_pad[2]; 60 }; 61 62 /* bits found in ts_status */ 63 #define HAL_TXERR_XRETRY 0x01 /* excessive retries */ 64 #define HAL_TXERR_FILT 0x02 /* blocked by tx filtering */ 65 #define HAL_TXERR_FIFO 0x04 /* fifo underrun */ 66 #define HAL_TXERR_XTXOP 0x08 /* txop exceeded */ 67 #define HAL_TXERR_TIMER_EXPIRED 0x10 /* Tx timer expired */ 68 69 /* bits found in ts_flags */ 70 #define HAL_TX_BA 0x01 /* Block Ack seen */ 71 #define HAL_TX_AGGR 0x02 /* Aggregate */ 72 #define HAL_TX_DESC_CFG_ERR 0x10 /* Error in 20/40 desc config */ 73 #define HAL_TX_DATA_UNDERRUN 0x20 /* Tx buffer underrun */ 74 #define HAL_TX_DELIM_UNDERRUN 0x40 /* Tx delimiter underrun */ 75 #define HAL_TX_FAST_TS 0x80 /* Tx locationing timestamp */ 76 77 /* 78 * Receive descriptor status. This structure is filled 79 * in only after the rx descriptor process method finds a 80 * ``done'' descriptor; at which point it returns something 81 * other than HAL_EINPROGRESS. 82 * 83 * If rx_status is zero, then the frame was received ok; 84 * otherwise the error information is indicated and rs_phyerr 85 * contains a phy error code if HAL_RXERR_PHY is set. In general 86 * the frame contents is undefined when an error occurred thought 87 * for some errors (e.g. a decryption error), it may be meaningful. 88 * 89 * Note that the receive timestamp is expanded using the TSF to 90 * at least 15 bits (regardless of what the h/w provides directly). 91 * Newer hardware supports a full 32-bits; use HAL_CAP_32TSTAMP to 92 * find out if the hardware is capable. 93 * 94 * rx_rssi is in units of dbm above the noise floor. This value 95 * is measured during the preamble and PLCP; i.e. with the initial 96 * 4us of detection. The noise floor is typically a consistent 97 * -96dBm absolute power in a 20MHz channel. 98 */ 99 struct ath_rx_status { 100 uint16_t rs_datalen; /* rx frame length */ 101 uint8_t rs_status; /* rx status, 0 => recv ok */ 102 uint8_t rs_phyerr; /* phy error code */ 103 int8_t rs_rssi; /* rx frame RSSI (combined for 11n) */ 104 uint8_t rs_keyix; /* key cache index */ 105 uint8_t rs_rate; /* h/w receive rate index */ 106 uint8_t rs_more; /* more descriptors follow */ 107 uint32_t rs_tstamp; /* h/w assigned timestamp */ 108 uint32_t rs_antenna; /* antenna information */ 109 /* 802.11n status */ 110 int8_t rs_rssi_ctl[3]; /* rx frame RSSI [ctl, chain 0-2] */ 111 int8_t rs_rssi_ext[3]; /* rx frame RSSI [ext, chain 0-2] */ 112 uint8_t rs_isaggr; /* is part of the aggregate */ 113 uint8_t rs_moreaggr; /* more frames in aggr to follow */ 114 uint16_t rs_flags; /* misc flags */ 115 uint8_t rs_num_delims; /* number of delims in aggr */ 116 uint8_t rs_spare0; /* padding */ 117 uint8_t rs_ness; /* number of extension spatial streams */ 118 uint8_t rs_hw_upload_data_type; /* hw upload format */ 119 uint16_t rs_spare1; 120 uint32_t rs_evm0; /* evm bytes */ 121 uint32_t rs_evm1; 122 uint32_t rs_evm2; 123 uint32_t rs_evm3; /* needed for ar9300 and later */ 124 uint32_t rs_evm4; /* needed for ar9300 and later */ 125 }; 126 127 /* bits found in rs_status */ 128 #define HAL_RXERR_CRC 0x01 /* CRC error on frame */ 129 #define HAL_RXERR_PHY 0x02 /* PHY error, rs_phyerr is valid */ 130 #define HAL_RXERR_FIFO 0x04 /* fifo overrun */ 131 #define HAL_RXERR_DECRYPT 0x08 /* non-Michael decrypt error */ 132 #define HAL_RXERR_MIC 0x10 /* Michael MIC decrypt error */ 133 #define HAL_RXERR_INCOMP 0x20 /* Rx Desc processing is incomplete */ 134 #define HAL_RXERR_KEYMISS 0x40 /* Key not found in keycache */ 135 136 /* bits found in rs_flags */ 137 #define HAL_RX_MORE 0x0001 /* more descriptors follow */ 138 #define HAL_RX_MORE_AGGR 0x0002 /* more frames in aggr */ 139 #define HAL_RX_GI 0x0004 /* full gi */ 140 #define HAL_RX_2040 0x0008 /* 40 Mhz */ 141 #define HAL_RX_DELIM_CRC_PRE 0x0010 /* crc error in delimiter pre */ 142 #define HAL_RX_DELIM_CRC_POST 0x0020 /* crc error in delim after */ 143 #define HAL_RX_DECRYPT_BUSY 0x0040 /* decrypt was too slow */ 144 #define HAL_RX_HI_RX_CHAIN 0x0080 /* SM power save: hi Rx chain control */ 145 #define HAL_RX_IS_APSD 0x0100 /* Is ASPD trigger frame */ 146 #define HAL_RX_STBC 0x0200 /* Is an STBC frame */ 147 #define HAL_RX_LOC_INFO 0x0400 /* RX locationing information */ 148 149 #define HAL_RX_HW_UPLOAD_DATA 0x1000 /* This is a hardware data frame */ 150 #define HAL_RX_HW_SOUNDING 0x2000 /* Rx sounding frame (TxBF, positioning) */ 151 #define HAL_RX_UPLOAD_VALID 0x4000 /* This hardware data frame is valid */ 152 153 /* 154 * This is the format of RSSI[2] on the AR9285/AR9485. 155 * It encodes the LNA configuration information. 156 * 157 * For boards with an external diversity antenna switch, 158 * HAL_RX_LNA_EXTCFG encodes which configuration was 159 * used (antenna 1 or antenna 2.) This feeds into the 160 * switch table and ensures that the given antenna was 161 * connected to an LNA. 162 */ 163 #define HAL_RX_LNA_LNACFG 0x80 /* 1 = main LNA config used, 0 = ALT */ 164 #define HAL_RX_LNA_EXTCFG 0x40 /* 0 = external diversity ant1, 1 = ant2 */ 165 #define HAL_RX_LNA_CFG_USED 0x30 /* 2 bits; LNA config used on RX */ 166 #define HAL_RX_LNA_CFG_USED_S 4 167 #define HAL_RX_LNA_CFG_MAIN 0x0c /* 2 bits; "Main" LNA config */ 168 #define HAL_RX_LNA_CFG_ALT 0x02 /* 2 bits; "Alt" LNA config */ 169 170 /* 171 * This is the format of RSSI_EXT[2] on the AR9285/AR9485. 172 * It encodes the switch table configuration and fast diversity 173 * value. 174 */ 175 #define HAL_RX_LNA_FASTDIV 0x40 /* 1 = fast diversity measurement done */ 176 #define HAL_RX_LNA_SWITCH_0 0x30 /* 2 bits; sw_0[1:0] */ 177 #define HAL_RX_LNA_SWITCH_COM 0x0f /* 4 bits, sw_com[3:0] */ 178 179 enum { 180 HAL_PHYERR_UNDERRUN = 0, /* Transmit underrun */ 181 HAL_PHYERR_TIMING = 1, /* Timing error */ 182 HAL_PHYERR_PARITY = 2, /* Illegal parity */ 183 HAL_PHYERR_RATE = 3, /* Illegal rate */ 184 HAL_PHYERR_LENGTH = 4, /* Illegal length */ 185 HAL_PHYERR_RADAR = 5, /* Radar detect */ 186 HAL_PHYERR_SERVICE = 6, /* Illegal service */ 187 HAL_PHYERR_TOR = 7, /* Transmit override receive */ 188 /* NB: these are specific to the 5212 and later */ 189 HAL_PHYERR_OFDM_TIMING = 17, /* */ 190 HAL_PHYERR_OFDM_SIGNAL_PARITY = 18, /* */ 191 HAL_PHYERR_OFDM_RATE_ILLEGAL = 19, /* */ 192 HAL_PHYERR_OFDM_LENGTH_ILLEGAL = 20, /* */ 193 HAL_PHYERR_OFDM_POWER_DROP = 21, /* */ 194 HAL_PHYERR_OFDM_SERVICE = 22, /* */ 195 HAL_PHYERR_OFDM_RESTART = 23, /* */ 196 HAL_PHYERR_FALSE_RADAR_EXT = 24, /* */ 197 HAL_PHYERR_CCK_TIMING = 25, /* */ 198 HAL_PHYERR_CCK_HEADER_CRC = 26, /* */ 199 HAL_PHYERR_CCK_RATE_ILLEGAL = 27, /* */ 200 HAL_PHYERR_CCK_SERVICE = 30, /* */ 201 HAL_PHYERR_CCK_RESTART = 31, /* */ 202 HAL_PHYERR_CCK_LENGTH_ILLEGAL = 32, /* */ 203 HAL_PHYERR_CCK_POWER_DROP = 33, /* */ 204 /* AR5416 and later */ 205 HAL_PHYERR_HT_CRC_ERROR = 34, /* */ 206 HAL_PHYERR_HT_LENGTH_ILLEGAL = 35, /* */ 207 HAL_PHYERR_HT_RATE_ILLEGAL = 36, /* */ 208 209 HAL_PHYERR_SPECTRAL = 38, 210 }; 211 212 /* value found in rs_keyix to mark invalid entries */ 213 #define HAL_RXKEYIX_INVALID ((uint8_t) -1) 214 /* value used to specify no encryption key for xmit */ 215 #define HAL_TXKEYIX_INVALID ((u_int) -1) 216 217 /* XXX rs_antenna definitions */ 218 219 /* 220 * Definitions for the software frame/packet descriptors used by 221 * the Atheros HAL. This definition obscures hardware-specific 222 * details from the driver. Drivers are expected to fillin the 223 * portions of a descriptor that are not opaque then use HAL calls 224 * to complete the work. Status for completed frames is returned 225 * in a device-independent format. 226 */ 227 #define HAL_DESC_HW_SIZE 20 228 229 struct ath_desc { 230 /* 231 * The following definitions are passed directly 232 * the hardware and managed by the HAL. Drivers 233 * should not touch those elements marked opaque. 234 */ 235 uint32_t ds_link; /* phys address of next descriptor */ 236 uint32_t ds_data; /* phys address of data buffer */ 237 uint32_t ds_ctl0; /* opaque DMA control 0 */ 238 uint32_t ds_ctl1; /* opaque DMA control 1 */ 239 uint32_t ds_hw[HAL_DESC_HW_SIZE]; /* opaque h/w region */ 240 }; 241 242 struct ath_desc_txedma { 243 uint32_t ds_info; 244 uint32_t ds_link; 245 uint32_t ds_hw[21]; /* includes buf/len */ 246 }; 247 248 struct ath_desc_status { 249 union { 250 struct ath_tx_status tx;/* xmit status */ 251 struct ath_rx_status rx;/* recv status */ 252 } ds_us; 253 }; 254 255 #define ds_txstat ds_us.tx 256 #define ds_rxstat ds_us.rx 257 258 /* flags passed to tx descriptor setup methods */ 259 /* This is a uint16_t field in ath_buf, just be warned! */ 260 #define HAL_TXDESC_CLRDMASK 0x0001 /* clear destination filter mask */ 261 #define HAL_TXDESC_NOACK 0x0002 /* don't wait for ACK */ 262 #define HAL_TXDESC_RTSENA 0x0004 /* enable RTS */ 263 #define HAL_TXDESC_CTSENA 0x0008 /* enable CTS */ 264 #define HAL_TXDESC_INTREQ 0x0010 /* enable per-descriptor interrupt */ 265 #define HAL_TXDESC_VEOL 0x0020 /* mark virtual EOL */ 266 /* NB: this only affects frame, not any RTS/CTS */ 267 #define HAL_TXDESC_DURENA 0x0040 /* enable h/w write of duration field */ 268 #define HAL_TXDESC_EXT_ONLY 0x0080 /* send on ext channel only (11n) */ 269 #define HAL_TXDESC_EXT_AND_CTL 0x0100 /* send on ext + ctl channels (11n) */ 270 #define HAL_TXDESC_VMF 0x0200 /* virtual more frag */ 271 #define HAL_TXDESC_LOWRXCHAIN 0x0400 /* switch to low RX chain */ 272 #define HAL_TXDESC_LDPC 0x1000 /* Set LDPC TX for all rates */ 273 #define HAL_TXDESC_HWTS 0x2000 /* Request Azimuth Timestamp in TX payload */ 274 #define HAL_TXDESC_POS 0x4000 /* Request ToD/ToA locationing */ 275 276 /* flags passed to rx descriptor setup methods */ 277 #define HAL_RXDESC_INTREQ 0x0020 /* enable per-descriptor interrupt */ 278 #endif /* _DEV_ATH_DESC_H */ 279