1/* 2 * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org> 3 * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 * 17 */ 18 19/* 20 * Internal RX/TX descriptor structures 21 * (rX: reserved fields possibily used by future versions of the ar5k chipset) 22 */ 23 24/* 25 * common hardware RX control descriptor 26 */ 27struct ath5k_hw_rx_ctl { 28 u32 rx_control_0; /* RX control word 0 */ 29 u32 rx_control_1; /* RX control word 1 */ 30} __attribute__ ((packed)); 31 32/* RX control word 0 field/sflags */ 33#define AR5K_DESC_RX_CTL0 0x00000000 34 35/* RX control word 1 fields/flags */ 36#define AR5K_DESC_RX_CTL1_BUF_LEN 0x00000fff 37#define AR5K_DESC_RX_CTL1_INTREQ 0x00002000 38 39/* 40 * common hardware RX status descriptor 41 * 5210/11 and 5212 differ only in the flags defined below 42 */ 43struct ath5k_hw_rx_status { 44 u32 rx_status_0; /* RX status word 0 */ 45 u32 rx_status_1; /* RX status word 1 */ 46} __attribute__ ((packed)); 47 48/* 5210/5211 */ 49/* RX status word 0 fields/flags */ 50#define AR5K_5210_RX_DESC_STATUS0_DATA_LEN 0x00000fff 51#define AR5K_5210_RX_DESC_STATUS0_MORE 0x00001000 52#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_RATE 0x00078000 53#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_RATE_S 15 54#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_SIGNAL 0x07f80000 55#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_SIGNAL_S 19 56#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_ANTENNA 0x38000000 57#define AR5K_5210_RX_DESC_STATUS0_RECEIVE_ANTENNA_S 27 58 59/* RX status word 1 fields/flags */ 60#define AR5K_5210_RX_DESC_STATUS1_DONE 0x00000001 61#define AR5K_5210_RX_DESC_STATUS1_FRAME_RECEIVE_OK 0x00000002 62#define AR5K_5210_RX_DESC_STATUS1_CRC_ERROR 0x00000004 63#define AR5K_5210_RX_DESC_STATUS1_FIFO_OVERRUN 0x00000008 64#define AR5K_5210_RX_DESC_STATUS1_DECRYPT_CRC_ERROR 0x00000010 65#define AR5K_5210_RX_DESC_STATUS1_PHY_ERROR 0x000000e0 66#define AR5K_5210_RX_DESC_STATUS1_PHY_ERROR_S 5 67#define AR5K_5210_RX_DESC_STATUS1_KEY_INDEX_VALID 0x00000100 68#define AR5K_5210_RX_DESC_STATUS1_KEY_INDEX 0x00007e00 69#define AR5K_5210_RX_DESC_STATUS1_KEY_INDEX_S 9 70#define AR5K_5210_RX_DESC_STATUS1_RECEIVE_TIMESTAMP 0x0fff8000 71#define AR5K_5210_RX_DESC_STATUS1_RECEIVE_TIMESTAMP_S 15 72#define AR5K_5210_RX_DESC_STATUS1_KEY_CACHE_MISS 0x10000000 73 74/* 5212 */ 75/* RX status word 0 fields/flags */ 76#define AR5K_5212_RX_DESC_STATUS0_DATA_LEN 0x00000fff 77#define AR5K_5212_RX_DESC_STATUS0_MORE 0x00001000 78#define AR5K_5212_RX_DESC_STATUS0_DECOMP_CRC_ERROR 0x00002000 79#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_RATE 0x000f8000 80#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_RATE_S 15 81#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_SIGNAL 0x0ff00000 82#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_SIGNAL_S 20 83#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_ANTENNA 0xf0000000 84#define AR5K_5212_RX_DESC_STATUS0_RECEIVE_ANTENNA_S 28 85 86/* RX status word 1 fields/flags */ 87#define AR5K_5212_RX_DESC_STATUS1_DONE 0x00000001 88#define AR5K_5212_RX_DESC_STATUS1_FRAME_RECEIVE_OK 0x00000002 89#define AR5K_5212_RX_DESC_STATUS1_CRC_ERROR 0x00000004 90#define AR5K_5212_RX_DESC_STATUS1_DECRYPT_CRC_ERROR 0x00000008 91#define AR5K_5212_RX_DESC_STATUS1_PHY_ERROR 0x00000010 92#define AR5K_5212_RX_DESC_STATUS1_MIC_ERROR 0x00000020 93#define AR5K_5212_RX_DESC_STATUS1_KEY_INDEX_VALID 0x00000100 94#define AR5K_5212_RX_DESC_STATUS1_KEY_INDEX 0x0000fe00 95#define AR5K_5212_RX_DESC_STATUS1_KEY_INDEX_S 9 96#define AR5K_5212_RX_DESC_STATUS1_RECEIVE_TIMESTAMP 0x7fff0000 97#define AR5K_5212_RX_DESC_STATUS1_RECEIVE_TIMESTAMP_S 16 98#define AR5K_5212_RX_DESC_STATUS1_KEY_CACHE_MISS 0x80000000 99 100/* 101 * common hardware RX error descriptor 102 */ 103struct ath5k_hw_rx_error { 104 u32 rx_error_0; /* RX status word 0 */ 105 u32 rx_error_1; /* RX status word 1 */ 106} __attribute__ ((packed)); 107 108/* RX error word 0 fields/flags */ 109#define AR5K_RX_DESC_ERROR0 0x00000000 110 111/* RX error word 1 fields/flags */ 112#define AR5K_RX_DESC_ERROR1_PHY_ERROR_CODE 0x0000ff00 113#define AR5K_RX_DESC_ERROR1_PHY_ERROR_CODE_S 8 114 115/* PHY Error codes */ 116#define AR5K_DESC_RX_PHY_ERROR_NONE 0x00 117#define AR5K_DESC_RX_PHY_ERROR_TIMING 0x20 118#define AR5K_DESC_RX_PHY_ERROR_PARITY 0x40 119#define AR5K_DESC_RX_PHY_ERROR_RATE 0x60 120#define AR5K_DESC_RX_PHY_ERROR_LENGTH 0x80 121#define AR5K_DESC_RX_PHY_ERROR_64QAM 0xa0 122#define AR5K_DESC_RX_PHY_ERROR_SERVICE 0xc0 123#define AR5K_DESC_RX_PHY_ERROR_TRANSMITOVR 0xe0 124 125/* 126 * 5210/5211 hardware 2-word TX control descriptor 127 */ 128struct ath5k_hw_2w_tx_ctl { 129 u32 tx_control_0; /* TX control word 0 */ 130 u32 tx_control_1; /* TX control word 1 */ 131} __attribute__ ((packed)); 132 133/* TX control word 0 fields/flags */ 134#define AR5K_2W_TX_DESC_CTL0_FRAME_LEN 0x00000fff 135#define AR5K_2W_TX_DESC_CTL0_HEADER_LEN 0x0003f000 /*[5210 ?]*/ 136#define AR5K_2W_TX_DESC_CTL0_HEADER_LEN_S 12 137#define AR5K_2W_TX_DESC_CTL0_XMIT_RATE 0x003c0000 138#define AR5K_2W_TX_DESC_CTL0_XMIT_RATE_S 18 139#define AR5K_2W_TX_DESC_CTL0_RTSENA 0x00400000 140#define AR5K_2W_TX_DESC_CTL0_CLRDMASK 0x01000000 141#define AR5K_2W_TX_DESC_CTL0_LONG_PACKET 0x00800000 /*[5210]*/ 142#define AR5K_2W_TX_DESC_CTL0_VEOL 0x00800000 /*[5211]*/ 143#define AR5K_2W_TX_DESC_CTL0_FRAME_TYPE 0x1c000000 /*[5210]*/ 144#define AR5K_2W_TX_DESC_CTL0_FRAME_TYPE_S 26 145#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5210 0x02000000 146#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5211 0x1e000000 147 148#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT \ 149 (ah->ah_version == AR5K_AR5210 ? \ 150 AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5210 : \ 151 AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_5211) 152 153#define AR5K_2W_TX_DESC_CTL0_ANT_MODE_XMIT_S 25 154#define AR5K_2W_TX_DESC_CTL0_INTREQ 0x20000000 155#define AR5K_2W_TX_DESC_CTL0_ENCRYPT_KEY_VALID 0x40000000 156 157/* TX control word 1 fields/flags */ 158#define AR5K_2W_TX_DESC_CTL1_BUF_LEN 0x00000fff 159#define AR5K_2W_TX_DESC_CTL1_MORE 0x00001000 160#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5210 0x0007e000 161#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5211 0x000fe000 162 163#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX \ 164 (ah->ah_version == AR5K_AR5210 ? \ 165 AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5210 : \ 166 AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_5211) 167 168#define AR5K_2W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_S 13 169#define AR5K_2W_TX_DESC_CTL1_FRAME_TYPE 0x00700000 /*[5211]*/ 170#define AR5K_2W_TX_DESC_CTL1_FRAME_TYPE_S 20 171#define AR5K_2W_TX_DESC_CTL1_NOACK 0x00800000 /*[5211]*/ 172#define AR5K_2W_TX_DESC_CTL1_RTS_DURATION 0xfff80000 /*[5210 ?]*/ 173 174/* Frame types */ 175#define AR5K_AR5210_TX_DESC_FRAME_TYPE_NORMAL 0x00 176#define AR5K_AR5210_TX_DESC_FRAME_TYPE_ATIM 0x04 177#define AR5K_AR5210_TX_DESC_FRAME_TYPE_PSPOLL 0x08 178#define AR5K_AR5210_TX_DESC_FRAME_TYPE_NO_DELAY 0x0c 179#define AR5K_AR5210_TX_DESC_FRAME_TYPE_PIFS 0x10 180 181/* 182 * 5212 hardware 4-word TX control descriptor 183 */ 184struct ath5k_hw_4w_tx_ctl { 185 u32 tx_control_0; /* TX control word 0 */ 186 187#define AR5K_4W_TX_DESC_CTL0_FRAME_LEN 0x00000fff 188#define AR5K_4W_TX_DESC_CTL0_XMIT_POWER 0x003f0000 189#define AR5K_4W_TX_DESC_CTL0_XMIT_POWER_S 16 190#define AR5K_4W_TX_DESC_CTL0_RTSENA 0x00400000 191#define AR5K_4W_TX_DESC_CTL0_VEOL 0x00800000 192#define AR5K_4W_TX_DESC_CTL0_CLRDMASK 0x01000000 193#define AR5K_4W_TX_DESC_CTL0_ANT_MODE_XMIT 0x1e000000 194#define AR5K_4W_TX_DESC_CTL0_ANT_MODE_XMIT_S 25 195#define AR5K_4W_TX_DESC_CTL0_INTREQ 0x20000000 196#define AR5K_4W_TX_DESC_CTL0_ENCRYPT_KEY_VALID 0x40000000 197#define AR5K_4W_TX_DESC_CTL0_CTSENA 0x80000000 198 199 u32 tx_control_1; /* TX control word 1 */ 200 201#define AR5K_4W_TX_DESC_CTL1_BUF_LEN 0x00000fff 202#define AR5K_4W_TX_DESC_CTL1_MORE 0x00001000 203#define AR5K_4W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX 0x000fe000 204#define AR5K_4W_TX_DESC_CTL1_ENCRYPT_KEY_INDEX_S 13 205#define AR5K_4W_TX_DESC_CTL1_FRAME_TYPE 0x00f00000 206#define AR5K_4W_TX_DESC_CTL1_FRAME_TYPE_S 20 207#define AR5K_4W_TX_DESC_CTL1_NOACK 0x01000000 208#define AR5K_4W_TX_DESC_CTL1_COMP_PROC 0x06000000 209#define AR5K_4W_TX_DESC_CTL1_COMP_PROC_S 25 210#define AR5K_4W_TX_DESC_CTL1_COMP_IV_LEN 0x18000000 211#define AR5K_4W_TX_DESC_CTL1_COMP_IV_LEN_S 27 212#define AR5K_4W_TX_DESC_CTL1_COMP_ICV_LEN 0x60000000 213#define AR5K_4W_TX_DESC_CTL1_COMP_ICV_LEN_S 29 214 215 u32 tx_control_2; /* TX control word 2 */ 216 217#define AR5K_4W_TX_DESC_CTL2_RTS_DURATION 0x00007fff 218#define AR5K_4W_TX_DESC_CTL2_DURATION_UPDATE_ENABLE 0x00008000 219#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES0 0x000f0000 220#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES0_S 16 221#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1 0x00f00000 222#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES1_S 20 223#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES2 0x0f000000 224#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES2_S 24 225#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES3 0xf0000000 226#define AR5K_4W_TX_DESC_CTL2_XMIT_TRIES3_S 28 227 228 u32 tx_control_3; /* TX control word 3 */ 229 230#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE0 0x0000001f 231#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE1 0x000003e0 232#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE1_S 5 233#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE2 0x00007c00 234#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE2_S 10 235#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE3 0x000f8000 236#define AR5K_4W_TX_DESC_CTL3_XMIT_RATE3_S 15 237#define AR5K_4W_TX_DESC_CTL3_RTS_CTS_RATE 0x01f00000 238#define AR5K_4W_TX_DESC_CTL3_RTS_CTS_RATE_S 20 239} __attribute__ ((packed)); 240 241/* 242 * Common TX status descriptor 243 */ 244struct ath5k_hw_tx_status { 245 u32 tx_status_0; /* TX status word 0 */ 246 u32 tx_status_1; /* TX status word 1 */ 247} __attribute__ ((packed)); 248 249/* TX status word 0 fields/flags */ 250#define AR5K_DESC_TX_STATUS0_FRAME_XMIT_OK 0x00000001 251#define AR5K_DESC_TX_STATUS0_EXCESSIVE_RETRIES 0x00000002 252#define AR5K_DESC_TX_STATUS0_FIFO_UNDERRUN 0x00000004 253#define AR5K_DESC_TX_STATUS0_FILTERED 0x00000008 254/*??? 255#define AR5K_DESC_TX_STATUS0_RTS_FAIL_COUNT 0x000000f0 256#define AR5K_DESC_TX_STATUS0_RTS_FAIL_COUNT_S 4 257*/ 258#define AR5K_DESC_TX_STATUS0_SHORT_RETRY_COUNT 0x000000f0 259#define AR5K_DESC_TX_STATUS0_SHORT_RETRY_COUNT_S 4 260/*??? 261#define AR5K_DESC_TX_STATUS0_DATA_FAIL_COUNT 0x00000f00 262#define AR5K_DESC_TX_STATUS0_DATA_FAIL_COUNT_S 8 263*/ 264#define AR5K_DESC_TX_STATUS0_LONG_RETRY_COUNT 0x00000f00 265#define AR5K_DESC_TX_STATUS0_LONG_RETRY_COUNT_S 8 266#define AR5K_DESC_TX_STATUS0_VIRT_COLL_COUNT 0x0000f000 267#define AR5K_DESC_TX_STATUS0_VIRT_COLL_COUNT_S 12 268#define AR5K_DESC_TX_STATUS0_SEND_TIMESTAMP 0xffff0000 269#define AR5K_DESC_TX_STATUS0_SEND_TIMESTAMP_S 16 270 271/* TX status word 1 fields/flags */ 272#define AR5K_DESC_TX_STATUS1_DONE 0x00000001 273#define AR5K_DESC_TX_STATUS1_SEQ_NUM 0x00001ffe 274#define AR5K_DESC_TX_STATUS1_SEQ_NUM_S 1 275#define AR5K_DESC_TX_STATUS1_ACK_SIG_STRENGTH 0x001fe000 276#define AR5K_DESC_TX_STATUS1_ACK_SIG_STRENGTH_S 13 277#define AR5K_DESC_TX_STATUS1_FINAL_TS_INDEX 0x00600000 278#define AR5K_DESC_TX_STATUS1_FINAL_TS_INDEX_S 21 279#define AR5K_DESC_TX_STATUS1_COMP_SUCCESS 0x00800000 280#define AR5K_DESC_TX_STATUS1_XMIT_ANTENNA 0x01000000 281 282/* 283 * 5210/5211 hardware TX descriptor 284 */ 285struct ath5k_hw_5210_tx_desc { 286 struct ath5k_hw_2w_tx_ctl tx_ctl; 287 struct ath5k_hw_tx_status tx_stat; 288} __attribute__ ((packed)); 289 290/* 291 * 5212 hardware TX descriptor 292 */ 293struct ath5k_hw_5212_tx_desc { 294 struct ath5k_hw_4w_tx_ctl tx_ctl; 295 struct ath5k_hw_tx_status tx_stat; 296} __attribute__ ((packed)); 297 298/* 299 * common hardware RX descriptor 300 */ 301struct ath5k_hw_all_rx_desc { 302 struct ath5k_hw_rx_ctl rx_ctl; 303 union { 304 struct ath5k_hw_rx_status rx_stat; 305 struct ath5k_hw_rx_error rx_err; 306 } u; 307} __attribute__ ((packed)); 308 309/* 310 * Atheros hardware descriptor 311 * This is read and written to by the hardware 312 */ 313struct ath5k_desc { 314 u32 ds_link; /* physical address of the next descriptor */ 315 u32 ds_data; /* physical address of data buffer (skb) */ 316 317 union { 318 struct ath5k_hw_5210_tx_desc ds_tx5210; 319 struct ath5k_hw_5212_tx_desc ds_tx5212; 320 struct ath5k_hw_all_rx_desc ds_rx; 321 } ud; 322} __attribute__ ((packed)); 323 324#define AR5K_RXDESC_INTREQ 0x0020 325 326#define AR5K_TXDESC_CLRDMASK 0x0001 327#define AR5K_TXDESC_NOACK 0x0002 /*[5211+]*/ 328#define AR5K_TXDESC_RTSENA 0x0004 329#define AR5K_TXDESC_CTSENA 0x0008 330#define AR5K_TXDESC_INTREQ 0x0010 331#define AR5K_TXDESC_VEOL 0x0020 /*[5211+]*/ 332 333