1 /************************************************************************ 2 * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC 3 * Copyright(c) 2002-2010 Exar Corp. 4 5 * This software may be used and distributed according to the terms of 6 * the GNU General Public License (GPL), incorporated herein by reference. 7 * Drivers based on or derived from this code fall under the GPL and must 8 * retain the authorship, copyright and license notice. This file is not 9 * a complete program and may only be used when the entire operating 10 * system is licensed under the GPL. 11 * See the file COPYING in this distribution for more information. 12 ************************************************************************/ 13 #ifndef _S2IO_H 14 #define _S2IO_H 15 16 #define TBD 0 17 #define s2BIT(loc) (0x8000000000000000ULL >> (loc)) 18 #define vBIT(val, loc, sz) (((u64)val) << (64-loc-sz)) 19 #define INV(d) ((d&0xff)<<24) | (((d>>8)&0xff)<<16) | (((d>>16)&0xff)<<8)| ((d>>24)&0xff) 20 21 #undef SUCCESS 22 #define SUCCESS 0 23 #define FAILURE -1 24 #define S2IO_MINUS_ONE 0xFFFFFFFFFFFFFFFFULL 25 #define S2IO_DISABLE_MAC_ENTRY 0xFFFFFFFFFFFFULL 26 #define S2IO_MAX_PCI_CONFIG_SPACE_REINIT 100 27 #define S2IO_BIT_RESET 1 28 #define S2IO_BIT_SET 2 29 #define CHECKBIT(value, nbit) (value & (1 << nbit)) 30 31 /* Maximum time to flicker LED when asked to identify NIC using ethtool */ 32 #define MAX_FLICKER_TIME 60000 /* 60 Secs */ 33 34 /* Maximum outstanding splits to be configured into xena. */ 35 enum { 36 XENA_ONE_SPLIT_TRANSACTION = 0, 37 XENA_TWO_SPLIT_TRANSACTION = 1, 38 XENA_THREE_SPLIT_TRANSACTION = 2, 39 XENA_FOUR_SPLIT_TRANSACTION = 3, 40 XENA_EIGHT_SPLIT_TRANSACTION = 4, 41 XENA_TWELVE_SPLIT_TRANSACTION = 5, 42 XENA_SIXTEEN_SPLIT_TRANSACTION = 6, 43 XENA_THIRTYTWO_SPLIT_TRANSACTION = 7 44 }; 45 #define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4) 46 47 /* OS concerned variables and constants */ 48 #define WATCH_DOG_TIMEOUT 15*HZ 49 #define EFILL 0x1234 50 #define ALIGN_SIZE 127 51 #define PCIX_COMMAND_REGISTER 0x62 52 53 /* 54 * Debug related variables. 55 */ 56 /* different debug levels. */ 57 #define ERR_DBG 0 58 #define INIT_DBG 1 59 #define INFO_DBG 2 60 #define TX_DBG 3 61 #define INTR_DBG 4 62 63 /* Global variable that defines the present debug level of the driver. */ 64 static int debug_level = ERR_DBG; 65 66 /* DEBUG message print. */ 67 #define DBG_PRINT(dbg_level, fmt, args...) do { \ 68 if (dbg_level <= debug_level) \ 69 pr_info(fmt, ##args); \ 70 } while (0) 71 72 /* Protocol assist features of the NIC */ 73 #define L3_CKSUM_OK 0xFFFF 74 #define L4_CKSUM_OK 0xFFFF 75 #define S2IO_JUMBO_SIZE 9600 76 77 /* Driver statistics maintained by driver */ 78 struct swStat { 79 unsigned long long single_ecc_errs; 80 unsigned long long double_ecc_errs; 81 unsigned long long parity_err_cnt; 82 unsigned long long serious_err_cnt; 83 unsigned long long soft_reset_cnt; 84 unsigned long long fifo_full_cnt; 85 unsigned long long ring_full_cnt[8]; 86 /* LRO statistics */ 87 unsigned long long clubbed_frms_cnt; 88 unsigned long long sending_both; 89 unsigned long long outof_sequence_pkts; 90 unsigned long long flush_max_pkts; 91 unsigned long long sum_avg_pkts_aggregated; 92 unsigned long long num_aggregations; 93 /* Other statistics */ 94 unsigned long long mem_alloc_fail_cnt; 95 unsigned long long pci_map_fail_cnt; 96 unsigned long long watchdog_timer_cnt; 97 unsigned long long mem_allocated; 98 unsigned long long mem_freed; 99 unsigned long long link_up_cnt; 100 unsigned long long link_down_cnt; 101 unsigned long long link_up_time; 102 unsigned long long link_down_time; 103 104 /* Transfer Code statistics */ 105 unsigned long long tx_buf_abort_cnt; 106 unsigned long long tx_desc_abort_cnt; 107 unsigned long long tx_parity_err_cnt; 108 unsigned long long tx_link_loss_cnt; 109 unsigned long long tx_list_proc_err_cnt; 110 111 unsigned long long rx_parity_err_cnt; 112 unsigned long long rx_abort_cnt; 113 unsigned long long rx_parity_abort_cnt; 114 unsigned long long rx_rda_fail_cnt; 115 unsigned long long rx_unkn_prot_cnt; 116 unsigned long long rx_fcs_err_cnt; 117 unsigned long long rx_buf_size_err_cnt; 118 unsigned long long rx_rxd_corrupt_cnt; 119 unsigned long long rx_unkn_err_cnt; 120 121 /* Error/alarm statistics*/ 122 unsigned long long tda_err_cnt; 123 unsigned long long pfc_err_cnt; 124 unsigned long long pcc_err_cnt; 125 unsigned long long tti_err_cnt; 126 unsigned long long lso_err_cnt; 127 unsigned long long tpa_err_cnt; 128 unsigned long long sm_err_cnt; 129 unsigned long long mac_tmac_err_cnt; 130 unsigned long long mac_rmac_err_cnt; 131 unsigned long long xgxs_txgxs_err_cnt; 132 unsigned long long xgxs_rxgxs_err_cnt; 133 unsigned long long rc_err_cnt; 134 unsigned long long prc_pcix_err_cnt; 135 unsigned long long rpa_err_cnt; 136 unsigned long long rda_err_cnt; 137 unsigned long long rti_err_cnt; 138 unsigned long long mc_err_cnt; 139 140 }; 141 142 /* Xpak releated alarm and warnings */ 143 struct xpakStat { 144 u64 alarm_transceiver_temp_high; 145 u64 alarm_transceiver_temp_low; 146 u64 alarm_laser_bias_current_high; 147 u64 alarm_laser_bias_current_low; 148 u64 alarm_laser_output_power_high; 149 u64 alarm_laser_output_power_low; 150 u64 warn_transceiver_temp_high; 151 u64 warn_transceiver_temp_low; 152 u64 warn_laser_bias_current_high; 153 u64 warn_laser_bias_current_low; 154 u64 warn_laser_output_power_high; 155 u64 warn_laser_output_power_low; 156 u64 xpak_regs_stat; 157 u32 xpak_timer_count; 158 }; 159 160 161 /* The statistics block of Xena */ 162 struct stat_block { 163 /* Tx MAC statistics counters. */ 164 __le32 tmac_data_octets; 165 __le32 tmac_frms; 166 __le64 tmac_drop_frms; 167 __le32 tmac_bcst_frms; 168 __le32 tmac_mcst_frms; 169 __le64 tmac_pause_ctrl_frms; 170 __le32 tmac_ucst_frms; 171 __le32 tmac_ttl_octets; 172 __le32 tmac_any_err_frms; 173 __le32 tmac_nucst_frms; 174 __le64 tmac_ttl_less_fb_octets; 175 __le64 tmac_vld_ip_octets; 176 __le32 tmac_drop_ip; 177 __le32 tmac_vld_ip; 178 __le32 tmac_rst_tcp; 179 __le32 tmac_icmp; 180 __le64 tmac_tcp; 181 __le32 reserved_0; 182 __le32 tmac_udp; 183 184 /* Rx MAC Statistics counters. */ 185 __le32 rmac_data_octets; 186 __le32 rmac_vld_frms; 187 __le64 rmac_fcs_err_frms; 188 __le64 rmac_drop_frms; 189 __le32 rmac_vld_bcst_frms; 190 __le32 rmac_vld_mcst_frms; 191 __le32 rmac_out_rng_len_err_frms; 192 __le32 rmac_in_rng_len_err_frms; 193 __le64 rmac_long_frms; 194 __le64 rmac_pause_ctrl_frms; 195 __le64 rmac_unsup_ctrl_frms; 196 __le32 rmac_accepted_ucst_frms; 197 __le32 rmac_ttl_octets; 198 __le32 rmac_discarded_frms; 199 __le32 rmac_accepted_nucst_frms; 200 __le32 reserved_1; 201 __le32 rmac_drop_events; 202 __le64 rmac_ttl_less_fb_octets; 203 __le64 rmac_ttl_frms; 204 __le64 reserved_2; 205 __le32 rmac_usized_frms; 206 __le32 reserved_3; 207 __le32 rmac_frag_frms; 208 __le32 rmac_osized_frms; 209 __le32 reserved_4; 210 __le32 rmac_jabber_frms; 211 __le64 rmac_ttl_64_frms; 212 __le64 rmac_ttl_65_127_frms; 213 __le64 reserved_5; 214 __le64 rmac_ttl_128_255_frms; 215 __le64 rmac_ttl_256_511_frms; 216 __le64 reserved_6; 217 __le64 rmac_ttl_512_1023_frms; 218 __le64 rmac_ttl_1024_1518_frms; 219 __le32 rmac_ip; 220 __le32 reserved_7; 221 __le64 rmac_ip_octets; 222 __le32 rmac_drop_ip; 223 __le32 rmac_hdr_err_ip; 224 __le32 reserved_8; 225 __le32 rmac_icmp; 226 __le64 rmac_tcp; 227 __le32 rmac_err_drp_udp; 228 __le32 rmac_udp; 229 __le64 rmac_xgmii_err_sym; 230 __le64 rmac_frms_q0; 231 __le64 rmac_frms_q1; 232 __le64 rmac_frms_q2; 233 __le64 rmac_frms_q3; 234 __le64 rmac_frms_q4; 235 __le64 rmac_frms_q5; 236 __le64 rmac_frms_q6; 237 __le64 rmac_frms_q7; 238 __le16 rmac_full_q3; 239 __le16 rmac_full_q2; 240 __le16 rmac_full_q1; 241 __le16 rmac_full_q0; 242 __le16 rmac_full_q7; 243 __le16 rmac_full_q6; 244 __le16 rmac_full_q5; 245 __le16 rmac_full_q4; 246 __le32 reserved_9; 247 __le32 rmac_pause_cnt; 248 __le64 rmac_xgmii_data_err_cnt; 249 __le64 rmac_xgmii_ctrl_err_cnt; 250 __le32 rmac_err_tcp; 251 __le32 rmac_accepted_ip; 252 253 /* PCI/PCI-X Read transaction statistics. */ 254 __le32 new_rd_req_cnt; 255 __le32 rd_req_cnt; 256 __le32 rd_rtry_cnt; 257 __le32 new_rd_req_rtry_cnt; 258 259 /* PCI/PCI-X Write/Read transaction statistics. */ 260 __le32 wr_req_cnt; 261 __le32 wr_rtry_rd_ack_cnt; 262 __le32 new_wr_req_rtry_cnt; 263 __le32 new_wr_req_cnt; 264 __le32 wr_disc_cnt; 265 __le32 wr_rtry_cnt; 266 267 /* PCI/PCI-X Write / DMA Transaction statistics. */ 268 __le32 txp_wr_cnt; 269 __le32 rd_rtry_wr_ack_cnt; 270 __le32 txd_wr_cnt; 271 __le32 txd_rd_cnt; 272 __le32 rxd_wr_cnt; 273 __le32 rxd_rd_cnt; 274 __le32 rxf_wr_cnt; 275 __le32 txf_rd_cnt; 276 277 /* Tx MAC statistics overflow counters. */ 278 __le32 tmac_data_octets_oflow; 279 __le32 tmac_frms_oflow; 280 __le32 tmac_bcst_frms_oflow; 281 __le32 tmac_mcst_frms_oflow; 282 __le32 tmac_ucst_frms_oflow; 283 __le32 tmac_ttl_octets_oflow; 284 __le32 tmac_any_err_frms_oflow; 285 __le32 tmac_nucst_frms_oflow; 286 __le64 tmac_vlan_frms; 287 __le32 tmac_drop_ip_oflow; 288 __le32 tmac_vld_ip_oflow; 289 __le32 tmac_rst_tcp_oflow; 290 __le32 tmac_icmp_oflow; 291 __le32 tpa_unknown_protocol; 292 __le32 tmac_udp_oflow; 293 __le32 reserved_10; 294 __le32 tpa_parse_failure; 295 296 /* Rx MAC Statistics overflow counters. */ 297 __le32 rmac_data_octets_oflow; 298 __le32 rmac_vld_frms_oflow; 299 __le32 rmac_vld_bcst_frms_oflow; 300 __le32 rmac_vld_mcst_frms_oflow; 301 __le32 rmac_accepted_ucst_frms_oflow; 302 __le32 rmac_ttl_octets_oflow; 303 __le32 rmac_discarded_frms_oflow; 304 __le32 rmac_accepted_nucst_frms_oflow; 305 __le32 rmac_usized_frms_oflow; 306 __le32 rmac_drop_events_oflow; 307 __le32 rmac_frag_frms_oflow; 308 __le32 rmac_osized_frms_oflow; 309 __le32 rmac_ip_oflow; 310 __le32 rmac_jabber_frms_oflow; 311 __le32 rmac_icmp_oflow; 312 __le32 rmac_drop_ip_oflow; 313 __le32 rmac_err_drp_udp_oflow; 314 __le32 rmac_udp_oflow; 315 __le32 reserved_11; 316 __le32 rmac_pause_cnt_oflow; 317 __le64 rmac_ttl_1519_4095_frms; 318 __le64 rmac_ttl_4096_8191_frms; 319 __le64 rmac_ttl_8192_max_frms; 320 __le64 rmac_ttl_gt_max_frms; 321 __le64 rmac_osized_alt_frms; 322 __le64 rmac_jabber_alt_frms; 323 __le64 rmac_gt_max_alt_frms; 324 __le64 rmac_vlan_frms; 325 __le32 rmac_len_discard; 326 __le32 rmac_fcs_discard; 327 __le32 rmac_pf_discard; 328 __le32 rmac_da_discard; 329 __le32 rmac_red_discard; 330 __le32 rmac_rts_discard; 331 __le32 reserved_12; 332 __le32 rmac_ingm_full_discard; 333 __le32 reserved_13; 334 __le32 rmac_accepted_ip_oflow; 335 __le32 reserved_14; 336 __le32 link_fault_cnt; 337 u8 buffer[20]; 338 struct swStat sw_stat; 339 struct xpakStat xpak_stat; 340 }; 341 342 /* Default value for 'vlan_strip_tag' configuration parameter */ 343 #define NO_STRIP_IN_PROMISC 2 344 345 /* 346 * Structures representing different init time configuration 347 * parameters of the NIC. 348 */ 349 350 #define MAX_TX_FIFOS 8 351 #define MAX_RX_RINGS 8 352 353 #define FIFO_DEFAULT_NUM 5 354 #define FIFO_UDP_MAX_NUM 2 /* 0 - even, 1 -odd ports */ 355 #define FIFO_OTHER_MAX_NUM 1 356 357 358 #define MAX_RX_DESC_1 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 128) 359 #define MAX_RX_DESC_2 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 86) 360 #define MAX_TX_DESC (MAX_AVAILABLE_TXDS) 361 362 /* FIFO mappings for all possible number of fifos configured */ 363 static const int fifo_map[][MAX_TX_FIFOS] = { 364 {0, 0, 0, 0, 0, 0, 0, 0}, 365 {0, 0, 0, 0, 1, 1, 1, 1}, 366 {0, 0, 0, 1, 1, 1, 2, 2}, 367 {0, 0, 1, 1, 2, 2, 3, 3}, 368 {0, 0, 1, 1, 2, 2, 3, 4}, 369 {0, 0, 1, 1, 2, 3, 4, 5}, 370 {0, 0, 1, 2, 3, 4, 5, 6}, 371 {0, 1, 2, 3, 4, 5, 6, 7}, 372 }; 373 374 static const u16 fifo_selector[MAX_TX_FIFOS] = {0, 1, 3, 3, 7, 7, 7, 7}; 375 376 /* Maintains Per FIFO related information. */ 377 struct tx_fifo_config { 378 #define MAX_AVAILABLE_TXDS 8192 379 u32 fifo_len; /* specifies len of FIFO up to 8192, ie no of TxDLs */ 380 /* Priority definition */ 381 #define TX_FIFO_PRI_0 0 /*Highest */ 382 #define TX_FIFO_PRI_1 1 383 #define TX_FIFO_PRI_2 2 384 #define TX_FIFO_PRI_3 3 385 #define TX_FIFO_PRI_4 4 386 #define TX_FIFO_PRI_5 5 387 #define TX_FIFO_PRI_6 6 388 #define TX_FIFO_PRI_7 7 /*lowest */ 389 u8 fifo_priority; /* specifies pointer level for FIFO */ 390 /* user should not set twos fifos with same pri */ 391 u8 f_no_snoop; 392 #define NO_SNOOP_TXD 0x01 393 #define NO_SNOOP_TXD_BUFFER 0x02 394 }; 395 396 397 /* Maintains per Ring related information */ 398 struct rx_ring_config { 399 u32 num_rxd; /*No of RxDs per Rx Ring */ 400 #define RX_RING_PRI_0 0 /* highest */ 401 #define RX_RING_PRI_1 1 402 #define RX_RING_PRI_2 2 403 #define RX_RING_PRI_3 3 404 #define RX_RING_PRI_4 4 405 #define RX_RING_PRI_5 5 406 #define RX_RING_PRI_6 6 407 #define RX_RING_PRI_7 7 /* lowest */ 408 409 u8 ring_priority; /*Specifies service priority of ring */ 410 /* OSM should not set any two rings with same priority */ 411 u8 ring_org; /*Organization of ring */ 412 #define RING_ORG_BUFF1 0x01 413 #define RX_RING_ORG_BUFF3 0x03 414 #define RX_RING_ORG_BUFF5 0x05 415 416 u8 f_no_snoop; 417 #define NO_SNOOP_RXD 0x01 418 #define NO_SNOOP_RXD_BUFFER 0x02 419 }; 420 421 /* This structure provides contains values of the tunable parameters 422 * of the H/W 423 */ 424 struct config_param { 425 /* Tx Side */ 426 u32 tx_fifo_num; /*Number of Tx FIFOs */ 427 428 /* 0-No steering, 1-Priority steering, 2-Default fifo map */ 429 #define NO_STEERING 0 430 #define TX_PRIORITY_STEERING 0x1 431 #define TX_DEFAULT_STEERING 0x2 432 u8 tx_steering_type; 433 434 u8 fifo_mapping[MAX_TX_FIFOS]; 435 struct tx_fifo_config tx_cfg[MAX_TX_FIFOS]; /*Per-Tx FIFO config */ 436 u32 max_txds; /*Max no. of Tx buffer descriptor per TxDL */ 437 u64 tx_intr_type; 438 #define INTA 0 439 #define MSI_X 2 440 u8 intr_type; 441 u8 napi; 442 443 /* Specifies if Tx Intr is UTILZ or PER_LIST type. */ 444 445 /* Rx Side */ 446 u32 rx_ring_num; /*Number of receive rings */ 447 #define MAX_RX_BLOCKS_PER_RING 150 448 449 struct rx_ring_config rx_cfg[MAX_RX_RINGS]; /*Per-Rx Ring config */ 450 451 #define HEADER_ETHERNET_II_802_3_SIZE 14 452 #define HEADER_802_2_SIZE 3 453 #define HEADER_SNAP_SIZE 5 454 #define HEADER_VLAN_SIZE 4 455 456 #define MIN_MTU 46 457 #define MAX_PYLD 1500 458 #define MAX_MTU (MAX_PYLD+18) 459 #define MAX_MTU_VLAN (MAX_PYLD+22) 460 #define MAX_PYLD_JUMBO 9600 461 #define MAX_MTU_JUMBO (MAX_PYLD_JUMBO+18) 462 #define MAX_MTU_JUMBO_VLAN (MAX_PYLD_JUMBO+22) 463 u16 bus_speed; 464 int max_mc_addr; /* xena=64 herc=256 */ 465 int max_mac_addr; /* xena=16 herc=64 */ 466 int mc_start_offset; /* xena=16 herc=64 */ 467 u8 multiq; 468 }; 469 470 /* Structure representing MAC Addrs */ 471 struct mac_addr { 472 u8 mac_addr[ETH_ALEN]; 473 }; 474 475 /* Structure that represent every FIFO element in the BAR1 476 * Address location. 477 */ 478 struct TxFIFO_element { 479 u64 TxDL_Pointer; 480 481 u64 List_Control; 482 #define TX_FIFO_LAST_TXD_NUM( val) vBIT(val,0,8) 483 #define TX_FIFO_FIRST_LIST s2BIT(14) 484 #define TX_FIFO_LAST_LIST s2BIT(15) 485 #define TX_FIFO_FIRSTNLAST_LIST vBIT(3,14,2) 486 #define TX_FIFO_SPECIAL_FUNC s2BIT(23) 487 #define TX_FIFO_DS_NO_SNOOP s2BIT(31) 488 #define TX_FIFO_BUFF_NO_SNOOP s2BIT(30) 489 }; 490 491 /* Tx descriptor structure */ 492 struct TxD { 493 u64 Control_1; 494 /* bit mask */ 495 #define TXD_LIST_OWN_XENA s2BIT(7) 496 #define TXD_T_CODE (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(15)) 497 #define TXD_T_CODE_OK(val) (|(val & TXD_T_CODE)) 498 #define GET_TXD_T_CODE(val) ((val & TXD_T_CODE)<<12) 499 #define TXD_GATHER_CODE (s2BIT(22) | s2BIT(23)) 500 #define TXD_GATHER_CODE_FIRST s2BIT(22) 501 #define TXD_GATHER_CODE_LAST s2BIT(23) 502 #define TXD_TCP_LSO_EN s2BIT(30) 503 #define TXD_UDP_COF_EN s2BIT(31) 504 #define TXD_UFO_EN s2BIT(31) | s2BIT(30) 505 #define TXD_TCP_LSO_MSS(val) vBIT(val,34,14) 506 #define TXD_UFO_MSS(val) vBIT(val,34,14) 507 #define TXD_BUFFER0_SIZE(val) vBIT(val,48,16) 508 509 u64 Control_2; 510 #define TXD_TX_CKO_CONTROL (s2BIT(5)|s2BIT(6)|s2BIT(7)) 511 #define TXD_TX_CKO_IPV4_EN s2BIT(5) 512 #define TXD_TX_CKO_TCP_EN s2BIT(6) 513 #define TXD_TX_CKO_UDP_EN s2BIT(7) 514 #define TXD_VLAN_ENABLE s2BIT(15) 515 #define TXD_VLAN_TAG(val) vBIT(val,16,16) 516 #define TXD_INT_NUMBER(val) vBIT(val,34,6) 517 #define TXD_INT_TYPE_PER_LIST s2BIT(47) 518 #define TXD_INT_TYPE_UTILZ s2BIT(46) 519 #define TXD_SET_MARKER vBIT(0x6,0,4) 520 521 u64 Buffer_Pointer; 522 u64 Host_Control; /* reserved for host */ 523 }; 524 525 /* Structure to hold the phy and virt addr of every TxDL. */ 526 struct list_info_hold { 527 dma_addr_t list_phy_addr; 528 void *list_virt_addr; 529 }; 530 531 /* Rx descriptor structure for 1 buffer mode */ 532 struct RxD_t { 533 u64 Host_Control; /* reserved for host */ 534 u64 Control_1; 535 #define RXD_OWN_XENA s2BIT(7) 536 #define RXD_T_CODE (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(15)) 537 #define RXD_FRAME_PROTO vBIT(0xFFFF,24,8) 538 #define RXD_FRAME_VLAN_TAG s2BIT(24) 539 #define RXD_FRAME_PROTO_IPV4 s2BIT(27) 540 #define RXD_FRAME_PROTO_IPV6 s2BIT(28) 541 #define RXD_FRAME_IP_FRAG s2BIT(29) 542 #define RXD_FRAME_PROTO_TCP s2BIT(30) 543 #define RXD_FRAME_PROTO_UDP s2BIT(31) 544 #define TCP_OR_UDP_FRAME (RXD_FRAME_PROTO_TCP | RXD_FRAME_PROTO_UDP) 545 #define RXD_GET_L3_CKSUM(val) ((u16)(val>> 16) & 0xFFFF) 546 #define RXD_GET_L4_CKSUM(val) ((u16)(val) & 0xFFFF) 547 548 u64 Control_2; 549 #define THE_RXD_MARK 0x3 550 #define SET_RXD_MARKER vBIT(THE_RXD_MARK, 0, 2) 551 #define GET_RXD_MARKER(ctrl) ((ctrl & SET_RXD_MARKER) >> 62) 552 553 #define MASK_VLAN_TAG vBIT(0xFFFF,48,16) 554 #define SET_VLAN_TAG(val) vBIT(val,48,16) 555 #define SET_NUM_TAG(val) vBIT(val,16,32) 556 557 558 }; 559 /* Rx descriptor structure for 1 buffer mode */ 560 struct RxD1 { 561 struct RxD_t h; 562 563 #define MASK_BUFFER0_SIZE_1 vBIT(0x3FFF,2,14) 564 #define SET_BUFFER0_SIZE_1(val) vBIT(val,2,14) 565 #define RXD_GET_BUFFER0_SIZE_1(_Control_2) \ 566 (u16)((_Control_2 & MASK_BUFFER0_SIZE_1) >> 48) 567 u64 Buffer0_ptr; 568 }; 569 /* Rx descriptor structure for 3 or 2 buffer mode */ 570 571 struct RxD3 { 572 struct RxD_t h; 573 574 #define MASK_BUFFER0_SIZE_3 vBIT(0xFF,2,14) 575 #define MASK_BUFFER1_SIZE_3 vBIT(0xFFFF,16,16) 576 #define MASK_BUFFER2_SIZE_3 vBIT(0xFFFF,32,16) 577 #define SET_BUFFER0_SIZE_3(val) vBIT(val,8,8) 578 #define SET_BUFFER1_SIZE_3(val) vBIT(val,16,16) 579 #define SET_BUFFER2_SIZE_3(val) vBIT(val,32,16) 580 #define RXD_GET_BUFFER0_SIZE_3(Control_2) \ 581 (u8)((Control_2 & MASK_BUFFER0_SIZE_3) >> 48) 582 #define RXD_GET_BUFFER1_SIZE_3(Control_2) \ 583 (u16)((Control_2 & MASK_BUFFER1_SIZE_3) >> 32) 584 #define RXD_GET_BUFFER2_SIZE_3(Control_2) \ 585 (u16)((Control_2 & MASK_BUFFER2_SIZE_3) >> 16) 586 #define BUF0_LEN 40 587 #define BUF1_LEN 1 588 589 u64 Buffer0_ptr; 590 u64 Buffer1_ptr; 591 u64 Buffer2_ptr; 592 }; 593 594 595 /* Structure that represents the Rx descriptor block which contains 596 * 128 Rx descriptors. 597 */ 598 struct RxD_block { 599 #define MAX_RXDS_PER_BLOCK_1 127 600 struct RxD1 rxd[MAX_RXDS_PER_BLOCK_1]; 601 602 u64 reserved_0; 603 #define END_OF_BLOCK 0xFEFFFFFFFFFFFFFFULL 604 u64 reserved_1; /* 0xFEFFFFFFFFFFFFFF to mark last 605 * Rxd in this blk */ 606 u64 reserved_2_pNext_RxD_block; /* Logical ptr to next */ 607 u64 pNext_RxD_Blk_physical; /* Buff0_ptr.In a 32 bit arch 608 * the upper 32 bits should 609 * be 0 */ 610 }; 611 612 #define SIZE_OF_BLOCK 4096 613 614 #define RXD_MODE_1 0 /* One Buffer mode */ 615 #define RXD_MODE_3B 1 /* Two Buffer mode */ 616 617 /* Structure to hold virtual addresses of Buf0 and Buf1 in 618 * 2buf mode. */ 619 struct buffAdd { 620 void *ba_0_org; 621 void *ba_1_org; 622 void *ba_0; 623 void *ba_1; 624 }; 625 626 /* Structure which stores all the MAC control parameters */ 627 628 /* This structure stores the offset of the RxD in the ring 629 * from which the Rx Interrupt processor can start picking 630 * up the RxDs for processing. 631 */ 632 struct rx_curr_get_info { 633 u32 block_index; 634 u32 offset; 635 u32 ring_len; 636 }; 637 638 struct rx_curr_put_info { 639 u32 block_index; 640 u32 offset; 641 u32 ring_len; 642 }; 643 644 /* This structure stores the offset of the TxDl in the FIFO 645 * from which the Tx Interrupt processor can start picking 646 * up the TxDLs for send complete interrupt processing. 647 */ 648 struct tx_curr_get_info { 649 u32 offset; 650 u32 fifo_len; 651 }; 652 653 struct tx_curr_put_info { 654 u32 offset; 655 u32 fifo_len; 656 }; 657 658 struct rxd_info { 659 void *virt_addr; 660 dma_addr_t dma_addr; 661 }; 662 663 /* Structure that holds the Phy and virt addresses of the Blocks */ 664 struct rx_block_info { 665 void *block_virt_addr; 666 dma_addr_t block_dma_addr; 667 struct rxd_info *rxds; 668 }; 669 670 /* Data structure to represent a LRO session */ 671 struct lro { 672 struct sk_buff *parent; 673 struct sk_buff *last_frag; 674 u8 *l2h; 675 struct iphdr *iph; 676 struct tcphdr *tcph; 677 u32 tcp_next_seq; 678 __be32 tcp_ack; 679 int total_len; 680 int frags_len; 681 int sg_num; 682 int in_use; 683 __be16 window; 684 u16 vlan_tag; 685 u32 cur_tsval; 686 __be32 cur_tsecr; 687 u8 saw_ts; 688 } ____cacheline_aligned; 689 690 /* Ring specific structure */ 691 struct ring_info { 692 /* The ring number */ 693 int ring_no; 694 695 /* per-ring buffer counter */ 696 u32 rx_bufs_left; 697 698 #define MAX_LRO_SESSIONS 32 699 struct lro lro0_n[MAX_LRO_SESSIONS]; 700 u8 lro; 701 702 /* copy of sp->rxd_mode flag */ 703 int rxd_mode; 704 705 /* Number of rxds per block for the rxd_mode */ 706 int rxd_count; 707 708 /* copy of sp pointer */ 709 struct s2io_nic *nic; 710 711 /* copy of sp->dev pointer */ 712 struct net_device *dev; 713 714 /* copy of sp->pdev pointer */ 715 struct pci_dev *pdev; 716 717 /* Per ring napi struct */ 718 struct napi_struct napi; 719 720 unsigned long interrupt_count; 721 722 /* 723 * Place holders for the virtual and physical addresses of 724 * all the Rx Blocks 725 */ 726 struct rx_block_info rx_blocks[MAX_RX_BLOCKS_PER_RING]; 727 int block_count; 728 int pkt_cnt; 729 730 /* 731 * Put pointer info which indictes which RxD has to be replenished 732 * with a new buffer. 733 */ 734 struct rx_curr_put_info rx_curr_put_info; 735 736 /* 737 * Get pointer info which indictes which is the last RxD that was 738 * processed by the driver. 739 */ 740 struct rx_curr_get_info rx_curr_get_info; 741 742 /* interface MTU value */ 743 unsigned mtu; 744 745 /* Buffer Address store. */ 746 struct buffAdd **ba; 747 } ____cacheline_aligned; 748 749 /* Fifo specific structure */ 750 struct fifo_info { 751 /* FIFO number */ 752 int fifo_no; 753 754 /* Maximum TxDs per TxDL */ 755 int max_txds; 756 757 /* Place holder of all the TX List's Phy and Virt addresses. */ 758 struct list_info_hold *list_info; 759 760 /* 761 * Current offset within the tx FIFO where driver would write 762 * new Tx frame 763 */ 764 struct tx_curr_put_info tx_curr_put_info; 765 766 /* 767 * Current offset within tx FIFO from where the driver would start freeing 768 * the buffers 769 */ 770 struct tx_curr_get_info tx_curr_get_info; 771 #define FIFO_QUEUE_START 0 772 #define FIFO_QUEUE_STOP 1 773 int queue_state; 774 775 /* copy of sp->dev pointer */ 776 struct net_device *dev; 777 778 /* copy of multiq status */ 779 u8 multiq; 780 781 /* Per fifo lock */ 782 spinlock_t tx_lock; 783 784 /* Per fifo UFO in band structure */ 785 u64 *ufo_in_band_v; 786 787 struct s2io_nic *nic; 788 } ____cacheline_aligned; 789 790 /* Information related to the Tx and Rx FIFOs and Rings of Xena 791 * is maintained in this structure. 792 */ 793 struct mac_info { 794 /* tx side stuff */ 795 /* logical pointer of start of each Tx FIFO */ 796 struct TxFIFO_element __iomem *tx_FIFO_start[MAX_TX_FIFOS]; 797 798 /* Fifo specific structure */ 799 struct fifo_info fifos[MAX_TX_FIFOS]; 800 801 /* Save virtual address of TxD page with zero DMA addr(if any) */ 802 void *zerodma_virt_addr; 803 804 /* rx side stuff */ 805 /* Ring specific structure */ 806 struct ring_info rings[MAX_RX_RINGS]; 807 808 u16 rmac_pause_time; 809 u16 mc_pause_threshold_q0q3; 810 u16 mc_pause_threshold_q4q7; 811 812 void *stats_mem; /* orignal pointer to allocated mem */ 813 dma_addr_t stats_mem_phy; /* Physical address of the stat block */ 814 u32 stats_mem_sz; 815 struct stat_block *stats_info; /* Logical address of the stat block */ 816 }; 817 818 /* Default Tunable parameters of the NIC. */ 819 #define DEFAULT_FIFO_0_LEN 4096 820 #define DEFAULT_FIFO_1_7_LEN 512 821 #define SMALL_BLK_CNT 30 822 #define LARGE_BLK_CNT 100 823 824 /* 825 * Structure to keep track of the MSI-X vectors and the corresponding 826 * argument registered against each vector 827 */ 828 #define MAX_REQUESTED_MSI_X 9 829 struct s2io_msix_entry 830 { 831 u16 vector; 832 u16 entry; 833 void *arg; 834 835 u8 type; 836 #define MSIX_ALARM_TYPE 1 837 #define MSIX_RING_TYPE 2 838 839 u8 in_use; 840 #define MSIX_REGISTERED_SUCCESS 0xAA 841 }; 842 843 struct msix_info_st { 844 u64 addr; 845 u64 data; 846 }; 847 848 /* These flags represent the devices temporary state */ 849 enum s2io_device_state_t 850 { 851 __S2IO_STATE_LINK_TASK=0, 852 __S2IO_STATE_CARD_UP 853 }; 854 855 /* Structure representing one instance of the NIC */ 856 struct s2io_nic { 857 int rxd_mode; 858 /* 859 * Count of packets to be processed in a given iteration, it will be indicated 860 * by the quota field of the device structure when NAPI is enabled. 861 */ 862 int pkts_to_process; 863 struct net_device *dev; 864 struct mac_info mac_control; 865 struct config_param config; 866 struct pci_dev *pdev; 867 void __iomem *bar0; 868 void __iomem *bar1; 869 #define MAX_MAC_SUPPORTED 16 870 #define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED 871 872 struct mac_addr def_mac_addr[256]; 873 874 struct net_device_stats stats; 875 int high_dma_flag; 876 int device_enabled_once; 877 878 char name[60]; 879 880 /* Timer that handles I/O errors/exceptions */ 881 struct timer_list alarm_timer; 882 883 /* Space to back up the PCI config space */ 884 u32 config_space[256 / sizeof(u32)]; 885 886 #define PROMISC 1 887 #define ALL_MULTI 2 888 889 #define MAX_ADDRS_SUPPORTED 64 890 u16 mc_addr_count; 891 892 u16 m_cast_flg; 893 u16 all_multi_pos; 894 u16 promisc_flg; 895 896 /* Restart timer, used to restart NIC if the device is stuck and 897 * a schedule task that will set the correct Link state once the 898 * NIC's PHY has stabilized after a state change. 899 */ 900 struct work_struct rst_timer_task; 901 struct work_struct set_link_task; 902 903 /* Flag that can be used to turn on or turn off the Rx checksum 904 * offload feature. 905 */ 906 int rx_csum; 907 908 /* Below variables are used for fifo selection to transmit a packet */ 909 u16 fifo_selector[MAX_TX_FIFOS]; 910 911 /* Total fifos for tcp packets */ 912 u8 total_tcp_fifos; 913 914 /* 915 * Beginning index of udp for udp packets 916 * Value will be equal to 917 * (tx_fifo_num - FIFO_UDP_MAX_NUM - FIFO_OTHER_MAX_NUM) 918 */ 919 u8 udp_fifo_idx; 920 921 u8 total_udp_fifos; 922 923 /* 924 * Beginning index of fifo for all other packets 925 * Value will be equal to (tx_fifo_num - FIFO_OTHER_MAX_NUM) 926 */ 927 u8 other_fifo_idx; 928 929 struct napi_struct napi; 930 /* after blink, the adapter must be restored with original 931 * values. 932 */ 933 u64 adapt_ctrl_org; 934 935 /* Last known link state. */ 936 u16 last_link_state; 937 #define LINK_DOWN 1 938 #define LINK_UP 2 939 940 int task_flag; 941 unsigned long long start_time; 942 int vlan_strip_flag; 943 #define MSIX_FLG 0xA5 944 int num_entries; 945 struct msix_entry *entries; 946 int msi_detected; 947 wait_queue_head_t msi_wait; 948 struct s2io_msix_entry *s2io_entries; 949 char desc[MAX_REQUESTED_MSI_X][25]; 950 951 int avail_msix_vectors; /* No. of MSI-X vectors granted by system */ 952 953 struct msix_info_st msix_info[0x3f]; 954 955 #define XFRAME_I_DEVICE 1 956 #define XFRAME_II_DEVICE 2 957 u8 device_type; 958 959 unsigned long clubbed_frms_cnt; 960 unsigned long sending_both; 961 u16 lro_max_aggr_per_sess; 962 volatile unsigned long state; 963 u64 general_int_mask; 964 965 #define VPD_STRING_LEN 80 966 u8 product_name[VPD_STRING_LEN]; 967 u8 serial_num[VPD_STRING_LEN]; 968 }; 969 970 #define RESET_ERROR 1 971 #define CMD_ERROR 2 972 973 /* OS related system calls */ 974 #ifndef readq 975 static inline u64 readq(void __iomem *addr) 976 { 977 u64 ret = 0; 978 ret = readl(addr + 4); 979 ret <<= 32; 980 ret |= readl(addr); 981 982 return ret; 983 } 984 #endif 985 986 #ifndef writeq 987 static inline void writeq(u64 val, void __iomem *addr) 988 { 989 writel((u32) (val), addr); 990 writel((u32) (val >> 32), (addr + 4)); 991 } 992 #endif 993 994 /* 995 * Some registers have to be written in a particular order to 996 * expect correct hardware operation. The macro SPECIAL_REG_WRITE 997 * is used to perform such ordered writes. Defines UF (Upper First) 998 * and LF (Lower First) will be used to specify the required write order. 999 */ 1000 #define UF 1 1001 #define LF 2 1002 static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order) 1003 { 1004 if (order == LF) { 1005 writel((u32) (val), addr); 1006 (void) readl(addr); 1007 writel((u32) (val >> 32), (addr + 4)); 1008 (void) readl(addr + 4); 1009 } else { 1010 writel((u32) (val >> 32), (addr + 4)); 1011 (void) readl(addr + 4); 1012 writel((u32) (val), addr); 1013 (void) readl(addr); 1014 } 1015 } 1016 1017 /* Interrupt related values of Xena */ 1018 1019 #define ENABLE_INTRS 1 1020 #define DISABLE_INTRS 2 1021 1022 /* Highest level interrupt blocks */ 1023 #define TX_PIC_INTR (0x0001<<0) 1024 #define TX_DMA_INTR (0x0001<<1) 1025 #define TX_MAC_INTR (0x0001<<2) 1026 #define TX_XGXS_INTR (0x0001<<3) 1027 #define TX_TRAFFIC_INTR (0x0001<<4) 1028 #define RX_PIC_INTR (0x0001<<5) 1029 #define RX_DMA_INTR (0x0001<<6) 1030 #define RX_MAC_INTR (0x0001<<7) 1031 #define RX_XGXS_INTR (0x0001<<8) 1032 #define RX_TRAFFIC_INTR (0x0001<<9) 1033 #define MC_INTR (0x0001<<10) 1034 #define ENA_ALL_INTRS ( TX_PIC_INTR | \ 1035 TX_DMA_INTR | \ 1036 TX_MAC_INTR | \ 1037 TX_XGXS_INTR | \ 1038 TX_TRAFFIC_INTR | \ 1039 RX_PIC_INTR | \ 1040 RX_DMA_INTR | \ 1041 RX_MAC_INTR | \ 1042 RX_XGXS_INTR | \ 1043 RX_TRAFFIC_INTR | \ 1044 MC_INTR ) 1045 1046 /* Interrupt masks for the general interrupt mask register */ 1047 #define DISABLE_ALL_INTRS 0xFFFFFFFFFFFFFFFFULL 1048 1049 #define TXPIC_INT_M s2BIT(0) 1050 #define TXDMA_INT_M s2BIT(1) 1051 #define TXMAC_INT_M s2BIT(2) 1052 #define TXXGXS_INT_M s2BIT(3) 1053 #define TXTRAFFIC_INT_M s2BIT(8) 1054 #define PIC_RX_INT_M s2BIT(32) 1055 #define RXDMA_INT_M s2BIT(33) 1056 #define RXMAC_INT_M s2BIT(34) 1057 #define MC_INT_M s2BIT(35) 1058 #define RXXGXS_INT_M s2BIT(36) 1059 #define RXTRAFFIC_INT_M s2BIT(40) 1060 1061 /* PIC level Interrupts TODO*/ 1062 1063 /* DMA level Inressupts */ 1064 #define TXDMA_PFC_INT_M s2BIT(0) 1065 #define TXDMA_PCC_INT_M s2BIT(2) 1066 1067 /* PFC block interrupts */ 1068 #define PFC_MISC_ERR_1 s2BIT(0) /* Interrupt to indicate FIFO full */ 1069 1070 /* PCC block interrupts. */ 1071 #define PCC_FB_ECC_ERR vBIT(0xff, 16, 8) /* Interrupt to indicate 1072 PCC_FB_ECC Error. */ 1073 1074 #define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG) 1075 /* 1076 * Prototype declaration. 1077 */ 1078 static int s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre); 1079 static void s2io_rem_nic(struct pci_dev *pdev); 1080 static int init_shared_mem(struct s2io_nic *sp); 1081 static void free_shared_mem(struct s2io_nic *sp); 1082 static int init_nic(struct s2io_nic *nic); 1083 static int rx_intr_handler(struct ring_info *ring_data, int budget); 1084 static void s2io_txpic_intr_handle(struct s2io_nic *sp); 1085 static void tx_intr_handler(struct fifo_info *fifo_data); 1086 static void s2io_handle_errors(void * dev_id); 1087 1088 static int s2io_starter(void); 1089 static void s2io_closer(void); 1090 static void s2io_tx_watchdog(struct net_device *dev); 1091 static void s2io_set_multicast(struct net_device *dev); 1092 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp); 1093 static void s2io_link(struct s2io_nic * sp, int link); 1094 static void s2io_reset(struct s2io_nic * sp); 1095 static int s2io_poll_msix(struct napi_struct *napi, int budget); 1096 static int s2io_poll_inta(struct napi_struct *napi, int budget); 1097 static void s2io_init_pci(struct s2io_nic * sp); 1098 static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr); 1099 static void s2io_alarm_handle(unsigned long data); 1100 static irqreturn_t 1101 s2io_msix_ring_handle(int irq, void *dev_id); 1102 static irqreturn_t 1103 s2io_msix_fifo_handle(int irq, void *dev_id); 1104 static irqreturn_t s2io_isr(int irq, void *dev_id); 1105 static int verify_xena_quiescence(struct s2io_nic *sp); 1106 static const struct ethtool_ops netdev_ethtool_ops; 1107 static void s2io_set_link(struct work_struct *work); 1108 static int s2io_set_swapper(struct s2io_nic * sp); 1109 static void s2io_card_down(struct s2io_nic *nic); 1110 static int s2io_card_up(struct s2io_nic *nic); 1111 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit, 1112 int bit_state); 1113 static int s2io_add_isr(struct s2io_nic * sp); 1114 static void s2io_rem_isr(struct s2io_nic * sp); 1115 1116 static void restore_xmsi_data(struct s2io_nic *nic); 1117 static void do_s2io_store_unicast_mc(struct s2io_nic *sp); 1118 static void do_s2io_restore_unicast_mc(struct s2io_nic *sp); 1119 static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset); 1120 static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr); 1121 static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int offset); 1122 static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr); 1123 1124 static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer, 1125 u8 **tcp, u32 *tcp_len, struct lro **lro, struct RxD_t *rxdp, 1126 struct s2io_nic *sp); 1127 static void clear_lro_session(struct lro *lro); 1128 static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag); 1129 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro); 1130 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro, 1131 struct sk_buff *skb, u32 tcp_len); 1132 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring); 1133 1134 static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev, 1135 pci_channel_state_t state); 1136 static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev); 1137 static void s2io_io_resume(struct pci_dev *pdev); 1138 1139 #define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size 1140 #define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size 1141 #define s2io_offload_type(skb) skb_shinfo(skb)->gso_type 1142 1143 #define S2IO_PARM_INT(X, def_val) \ 1144 static unsigned int X = def_val;\ 1145 module_param(X , uint, 0); 1146 1147 #endif /* _S2IO_H */ 1148