drivers/net/s2io.h

   1 /************************************************************************
   2  * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
   3  * Copyright(c) 2002-2005 Neterion Inc.
   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 BIT(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 #ifndef BOOL
  22 #define BOOL    int
  23 #endif
  24
  25 #ifndef TRUE
  26 #define TRUE    1
  27 #define FALSE   0
  28 #endif
  29
  30 #undef SUCCESS
  31 #define SUCCESS 0
  32 #define FAILURE -1
  33
  34 #define CHECKBIT(value, nbit) (value & (1 << nbit))
  35
  36 /* Maximum time to flicker LED when asked to identify NIC using ethtool */
  37 #define MAX_FLICKER_TIME        60000 /* 60 Secs */
  38
  39 /* Maximum outstanding splits to be configured into xena. */
  40 typedef enum xena_max_outstanding_splits {
  41         XENA_ONE_SPLIT_TRANSACTION = 0,
  42         XENA_TWO_SPLIT_TRANSACTION = 1,
  43         XENA_THREE_SPLIT_TRANSACTION = 2,
  44         XENA_FOUR_SPLIT_TRANSACTION = 3,
  45         XENA_EIGHT_SPLIT_TRANSACTION = 4,
  46         XENA_TWELVE_SPLIT_TRANSACTION = 5,
  47         XENA_SIXTEEN_SPLIT_TRANSACTION = 6,
  48         XENA_THIRTYTWO_SPLIT_TRANSACTION = 7
  49 } xena_max_outstanding_splits;
  50 #define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4)
  51
  52 /*  OS concerned variables and constants */
  53 #define WATCH_DOG_TIMEOUT               15*HZ
  54 #define EFILL                           0x1234
  55 #define ALIGN_SIZE                      127
  56 #define PCIX_COMMAND_REGISTER           0x62
  57
  58 /*
  59  * Debug related variables.
  60  */
  61 /* different debug levels. */
  62 #define ERR_DBG         0
  63 #define INIT_DBG        1
  64 #define INFO_DBG        2
  65 #define TX_DBG          3
  66 #define INTR_DBG        4
  67
  68 /* Global variable that defines the present debug level of the driver. */
  69 static int debug_level = ERR_DBG;
  70
  71 /* DEBUG message print. */
  72 #define DBG_PRINT(dbg_level, args...)  if(!(debug_level<dbg_level)) printk(args)
  73
  74 /* Protocol assist features of the NIC */
  75 #define L3_CKSUM_OK 0xFFFF
  76 #define L4_CKSUM_OK 0xFFFF
  77 #define S2IO_JUMBO_SIZE 9600
  78
  79 /* Driver statistics maintained by driver */
  80 typedef struct {
  81         unsigned long long single_ecc_errs;
  82         unsigned long long double_ecc_errs;
  83         unsigned long long parity_err_cnt;
  84         unsigned long long serious_err_cnt;
  85         unsigned long long soft_reset_cnt;
  86         unsigned long long fifo_full_cnt;
  87         unsigned long long ring_full_cnt;
  88         /* LRO statistics */
  89         unsigned long long clubbed_frms_cnt;
  90         unsigned long long sending_both;
  91         unsigned long long outof_sequence_pkts;
  92         unsigned long long flush_max_pkts;
  93         unsigned long long sum_avg_pkts_aggregated;
  94         unsigned long long num_aggregations;
  95 } swStat_t;
  96
  97 /* Xpak releated alarm and warnings */
  98 typedef struct {
  99         u64 alarm_transceiver_temp_high;
 100         u64 alarm_transceiver_temp_low;
 101         u64 alarm_laser_bias_current_high;
 102         u64 alarm_laser_bias_current_low;
 103         u64 alarm_laser_output_power_high;
 104         u64 alarm_laser_output_power_low;
 105         u64 warn_transceiver_temp_high;
 106         u64 warn_transceiver_temp_low;
 107         u64 warn_laser_bias_current_high;
 108         u64 warn_laser_bias_current_low;
 109         u64 warn_laser_output_power_high;
 110         u64 warn_laser_output_power_low;
 111         u64 xpak_regs_stat;
 112         u32 xpak_timer_count;
 113 } xpakStat_t;
 114
 115
 116 /* The statistics block of Xena */
 117 typedef struct stat_block {
 118 /* Tx MAC statistics counters. */
 119         __le32 tmac_data_octets;
 120         __le32 tmac_frms;
 121         __le64 tmac_drop_frms;
 122         __le32 tmac_bcst_frms;
 123         __le32 tmac_mcst_frms;
 124         __le64 tmac_pause_ctrl_frms;
 125         __le32 tmac_ucst_frms;
 126         __le32 tmac_ttl_octets;
 127         __le32 tmac_any_err_frms;
 128         __le32 tmac_nucst_frms;
 129         __le64 tmac_ttl_less_fb_octets;
 130         __le64 tmac_vld_ip_octets;
 131         __le32 tmac_drop_ip;
 132         __le32 tmac_vld_ip;
 133         __le32 tmac_rst_tcp;
 134         __le32 tmac_icmp;
 135         __le64 tmac_tcp;
 136         __le32 reserved_0;
 137         __le32 tmac_udp;
 138
 139 /* Rx MAC Statistics counters. */
 140         __le32 rmac_data_octets;
 141         __le32 rmac_vld_frms;
 142         __le64 rmac_fcs_err_frms;
 143         __le64 rmac_drop_frms;
 144         __le32 rmac_vld_bcst_frms;
 145         __le32 rmac_vld_mcst_frms;
 146         __le32 rmac_out_rng_len_err_frms;
 147         __le32 rmac_in_rng_len_err_frms;
 148         __le64 rmac_long_frms;
 149         __le64 rmac_pause_ctrl_frms;
 150         __le64 rmac_unsup_ctrl_frms;
 151         __le32 rmac_accepted_ucst_frms;
 152         __le32 rmac_ttl_octets;
 153         __le32 rmac_discarded_frms;
 154         __le32 rmac_accepted_nucst_frms;
 155         __le32 reserved_1;
 156         __le32 rmac_drop_events;
 157         __le64 rmac_ttl_less_fb_octets;
 158         __le64 rmac_ttl_frms;
 159         __le64 reserved_2;
 160         __le32 rmac_usized_frms;
 161         __le32 reserved_3;
 162         __le32 rmac_frag_frms;
 163         __le32 rmac_osized_frms;
 164         __le32 reserved_4;
 165         __le32 rmac_jabber_frms;
 166         __le64 rmac_ttl_64_frms;
 167         __le64 rmac_ttl_65_127_frms;
 168         __le64 reserved_5;
 169         __le64 rmac_ttl_128_255_frms;
 170         __le64 rmac_ttl_256_511_frms;
 171         __le64 reserved_6;
 172         __le64 rmac_ttl_512_1023_frms;
 173         __le64 rmac_ttl_1024_1518_frms;
 174         __le32 rmac_ip;
 175         __le32 reserved_7;
 176         __le64 rmac_ip_octets;
 177         __le32 rmac_drop_ip;
 178         __le32 rmac_hdr_err_ip;
 179         __le32 reserved_8;
 180         __le32 rmac_icmp;
 181         __le64 rmac_tcp;
 182         __le32 rmac_err_drp_udp;
 183         __le32 rmac_udp;
 184         __le64 rmac_xgmii_err_sym;
 185         __le64 rmac_frms_q0;
 186         __le64 rmac_frms_q1;
 187         __le64 rmac_frms_q2;
 188         __le64 rmac_frms_q3;
 189         __le64 rmac_frms_q4;
 190         __le64 rmac_frms_q5;
 191         __le64 rmac_frms_q6;
 192         __le64 rmac_frms_q7;
 193         __le16 rmac_full_q3;
 194         __le16 rmac_full_q2;
 195         __le16 rmac_full_q1;
 196         __le16 rmac_full_q0;
 197         __le16 rmac_full_q7;
 198         __le16 rmac_full_q6;
 199         __le16 rmac_full_q5;
 200         __le16 rmac_full_q4;
 201         __le32 reserved_9;
 202         __le32 rmac_pause_cnt;
 203         __le64 rmac_xgmii_data_err_cnt;
 204         __le64 rmac_xgmii_ctrl_err_cnt;
 205         __le32 rmac_err_tcp;
 206         __le32 rmac_accepted_ip;
 207
 208 /* PCI/PCI-X Read transaction statistics. */
 209         __le32 new_rd_req_cnt;
 210         __le32 rd_req_cnt;
 211         __le32 rd_rtry_cnt;
 212         __le32 new_rd_req_rtry_cnt;
 213
 214 /* PCI/PCI-X Write/Read transaction statistics. */
 215         __le32 wr_req_cnt;
 216         __le32 wr_rtry_rd_ack_cnt;
 217         __le32 new_wr_req_rtry_cnt;
 218         __le32 new_wr_req_cnt;
 219         __le32 wr_disc_cnt;
 220         __le32 wr_rtry_cnt;
 221
 222 /*      PCI/PCI-X Write / DMA Transaction statistics. */
 223         __le32 txp_wr_cnt;
 224         __le32 rd_rtry_wr_ack_cnt;
 225         __le32 txd_wr_cnt;
 226         __le32 txd_rd_cnt;
 227         __le32 rxd_wr_cnt;
 228         __le32 rxd_rd_cnt;
 229         __le32 rxf_wr_cnt;
 230         __le32 txf_rd_cnt;
 231
 232 /* Tx MAC statistics overflow counters. */
 233         __le32 tmac_data_octets_oflow;
 234         __le32 tmac_frms_oflow;
 235         __le32 tmac_bcst_frms_oflow;
 236         __le32 tmac_mcst_frms_oflow;
 237         __le32 tmac_ucst_frms_oflow;
 238         __le32 tmac_ttl_octets_oflow;
 239         __le32 tmac_any_err_frms_oflow;
 240         __le32 tmac_nucst_frms_oflow;
 241         __le64 tmac_vlan_frms;
 242         __le32 tmac_drop_ip_oflow;
 243         __le32 tmac_vld_ip_oflow;
 244         __le32 tmac_rst_tcp_oflow;
 245         __le32 tmac_icmp_oflow;
 246         __le32 tpa_unknown_protocol;
 247         __le32 tmac_udp_oflow;
 248         __le32 reserved_10;
 249         __le32 tpa_parse_failure;
 250
 251 /* Rx MAC Statistics overflow counters. */
 252         __le32 rmac_data_octets_oflow;
 253         __le32 rmac_vld_frms_oflow;
 254         __le32 rmac_vld_bcst_frms_oflow;
 255         __le32 rmac_vld_mcst_frms_oflow;
 256         __le32 rmac_accepted_ucst_frms_oflow;
 257         __le32 rmac_ttl_octets_oflow;
 258         __le32 rmac_discarded_frms_oflow;
 259         __le32 rmac_accepted_nucst_frms_oflow;
 260         __le32 rmac_usized_frms_oflow;
 261         __le32 rmac_drop_events_oflow;
 262         __le32 rmac_frag_frms_oflow;
 263         __le32 rmac_osized_frms_oflow;
 264         __le32 rmac_ip_oflow;
 265         __le32 rmac_jabber_frms_oflow;
 266         __le32 rmac_icmp_oflow;
 267         __le32 rmac_drop_ip_oflow;
 268         __le32 rmac_err_drp_udp_oflow;
 269         __le32 rmac_udp_oflow;
 270         __le32 reserved_11;
 271         __le32 rmac_pause_cnt_oflow;
 272         __le64 rmac_ttl_1519_4095_frms;
 273         __le64 rmac_ttl_4096_8191_frms;
 274         __le64 rmac_ttl_8192_max_frms;
 275         __le64 rmac_ttl_gt_max_frms;
 276         __le64 rmac_osized_alt_frms;
 277         __le64 rmac_jabber_alt_frms;
 278         __le64 rmac_gt_max_alt_frms;
 279         __le64 rmac_vlan_frms;
 280         __le32 rmac_len_discard;
 281         __le32 rmac_fcs_discard;
 282         __le32 rmac_pf_discard;
 283         __le32 rmac_da_discard;
 284         __le32 rmac_red_discard;
 285         __le32 rmac_rts_discard;
 286         __le32 reserved_12;
 287         __le32 rmac_ingm_full_discard;
 288         __le32 reserved_13;
 289         __le32 rmac_accepted_ip_oflow;
 290         __le32 reserved_14;
 291         __le32 link_fault_cnt;
 292         u8  buffer[20];
 293         swStat_t sw_stat;
 294         xpakStat_t xpak_stat;
 295 } StatInfo_t;
 296
 297 /*
 298  * Structures representing different init time configuration
 299  * parameters of the NIC.
 300  */
 301
 302 #define MAX_TX_FIFOS 8
 303 #define MAX_RX_RINGS 8
 304
 305 /* FIFO mappings for all possible number of fifos configured */
 306 static int fifo_map[][MAX_TX_FIFOS] = {
 307         {0, 0, 0, 0, 0, 0, 0, 0},
 308         {0, 0, 0, 0, 1, 1, 1, 1},
 309         {0, 0, 0, 1, 1, 1, 2, 2},
 310         {0, 0, 1, 1, 2, 2, 3, 3},
 311         {0, 0, 1, 1, 2, 2, 3, 4},
 312         {0, 0, 1, 1, 2, 3, 4, 5},
 313         {0, 0, 1, 2, 3, 4, 5, 6},
 314         {0, 1, 2, 3, 4, 5, 6, 7},
 315 };
 316
 317 /* Maintains Per FIFO related information. */
 318 typedef struct tx_fifo_config {
 319 #define MAX_AVAILABLE_TXDS      8192
 320         u32 fifo_len;           /* specifies len of FIFO upto 8192, ie no of TxDLs */
 321 /* Priority definition */
 322 #define TX_FIFO_PRI_0               0   /*Highest */
 323 #define TX_FIFO_PRI_1               1
 324 #define TX_FIFO_PRI_2               2
 325 #define TX_FIFO_PRI_3               3
 326 #define TX_FIFO_PRI_4               4
 327 #define TX_FIFO_PRI_5               5
 328 #define TX_FIFO_PRI_6               6
 329 #define TX_FIFO_PRI_7               7   /*lowest */
 330         u8 fifo_priority;       /* specifies pointer level for FIFO */
 331         /* user should not set twos fifos with same pri */
 332         u8 f_no_snoop;
 333 #define NO_SNOOP_TXD                0x01
 334 #define NO_SNOOP_TXD_BUFFER          0x02
 335 } tx_fifo_config_t;
 336
 337
 338 /* Maintains per Ring related information */
 339 typedef struct rx_ring_config {
 340         u32 num_rxd;            /*No of RxDs per Rx Ring */
 341 #define RX_RING_PRI_0               0   /* highest */
 342 #define RX_RING_PRI_1               1
 343 #define RX_RING_PRI_2               2
 344 #define RX_RING_PRI_3               3
 345 #define RX_RING_PRI_4               4
 346 #define RX_RING_PRI_5               5
 347 #define RX_RING_PRI_6               6
 348 #define RX_RING_PRI_7               7   /* lowest */
 349
 350         u8 ring_priority;       /*Specifies service priority of ring */
 351         /* OSM should not set any two rings with same priority */
 352         u8 ring_org;            /*Organization of ring */
 353 #define RING_ORG_BUFF1          0x01
 354 #define RX_RING_ORG_BUFF3       0x03
 355 #define RX_RING_ORG_BUFF5       0x05
 356
 357         u8 f_no_snoop;
 358 #define NO_SNOOP_RXD                0x01
 359 #define NO_SNOOP_RXD_BUFFER         0x02
 360 } rx_ring_config_t;
 361
 362 /* This structure provides contains values of the tunable parameters
 363  * of the H/W
 364  */
 365 struct config_param {
 366 /* Tx Side */
 367         u32 tx_fifo_num;        /*Number of Tx FIFOs */
 368
 369         u8 fifo_mapping[MAX_TX_FIFOS];
 370         tx_fifo_config_t tx_cfg[MAX_TX_FIFOS];  /*Per-Tx FIFO config */
 371         u32 max_txds;           /*Max no. of Tx buffer descriptor per TxDL */
 372         u64 tx_intr_type;
 373         /* Specifies if Tx Intr is UTILZ or PER_LIST type. */
 374
 375 /* Rx Side */
 376         u32 rx_ring_num;        /*Number of receive rings */
 377 #define MAX_RX_BLOCKS_PER_RING  150
 378
 379         rx_ring_config_t rx_cfg[MAX_RX_RINGS];  /*Per-Rx Ring config */
 380         u8 bimodal;             /*Flag for setting bimodal interrupts*/
 381
 382 #define HEADER_ETHERNET_II_802_3_SIZE 14
 383 #define HEADER_802_2_SIZE              3
 384 #define HEADER_SNAP_SIZE               5
 385 #define HEADER_VLAN_SIZE               4
 386
 387 #define MIN_MTU                       46
 388 #define MAX_PYLD                    1500
 389 #define MAX_MTU                     (MAX_PYLD+18)
 390 #define MAX_MTU_VLAN                (MAX_PYLD+22)
 391 #define MAX_PYLD_JUMBO              9600
 392 #define MAX_MTU_JUMBO               (MAX_PYLD_JUMBO+18)
 393 #define MAX_MTU_JUMBO_VLAN          (MAX_PYLD_JUMBO+22)
 394         u16 bus_speed;
 395 };
 396
 397 /* Structure representing MAC Addrs */
 398 typedef struct mac_addr {
 399         u8 mac_addr[ETH_ALEN];
 400 } macaddr_t;
 401
 402 /* Structure that represent every FIFO element in the BAR1
 403  * Address location.
 404  */
 405 typedef struct _TxFIFO_element {
 406         u64 TxDL_Pointer;
 407
 408         u64 List_Control;
 409 #define TX_FIFO_LAST_TXD_NUM( val)     vBIT(val,0,8)
 410 #define TX_FIFO_FIRST_LIST             BIT(14)
 411 #define TX_FIFO_LAST_LIST              BIT(15)
 412 #define TX_FIFO_FIRSTNLAST_LIST        vBIT(3,14,2)
 413 #define TX_FIFO_SPECIAL_FUNC           BIT(23)
 414 #define TX_FIFO_DS_NO_SNOOP            BIT(31)
 415 #define TX_FIFO_BUFF_NO_SNOOP          BIT(30)
 416 } TxFIFO_element_t;
 417
 418 /* Tx descriptor structure */
 419 typedef struct _TxD {
 420         u64 Control_1;
 421 /* bit mask */
 422 #define TXD_LIST_OWN_XENA       BIT(7)
 423 #define TXD_T_CODE              (BIT(12)|BIT(13)|BIT(14)|BIT(15))
 424 #define TXD_T_CODE_OK(val)      (|(val & TXD_T_CODE))
 425 #define GET_TXD_T_CODE(val)     ((val & TXD_T_CODE)<<12)
 426 #define TXD_GATHER_CODE         (BIT(22) | BIT(23))
 427 #define TXD_GATHER_CODE_FIRST   BIT(22)
 428 #define TXD_GATHER_CODE_LAST    BIT(23)
 429 #define TXD_TCP_LSO_EN          BIT(30)
 430 #define TXD_UDP_COF_EN          BIT(31)
 431 #define TXD_UFO_EN              BIT(31) | BIT(30)
 432 #define TXD_TCP_LSO_MSS(val)    vBIT(val,34,14)
 433 #define TXD_UFO_MSS(val)        vBIT(val,34,14)
 434 #define TXD_BUFFER0_SIZE(val)   vBIT(val,48,16)
 435
 436         u64 Control_2;
 437 #define TXD_TX_CKO_CONTROL      (BIT(5)|BIT(6)|BIT(7))
 438 #define TXD_TX_CKO_IPV4_EN      BIT(5)
 439 #define TXD_TX_CKO_TCP_EN       BIT(6)
 440 #define TXD_TX_CKO_UDP_EN       BIT(7)
 441 #define TXD_VLAN_ENABLE         BIT(15)
 442 #define TXD_VLAN_TAG(val)       vBIT(val,16,16)
 443 #define TXD_INT_NUMBER(val)     vBIT(val,34,6)
 444 #define TXD_INT_TYPE_PER_LIST   BIT(47)
 445 #define TXD_INT_TYPE_UTILZ      BIT(46)
 446 #define TXD_SET_MARKER         vBIT(0x6,0,4)
 447
 448         u64 Buffer_Pointer;
 449         u64 Host_Control;       /* reserved for host */
 450 } TxD_t;
 451
 452 /* Structure to hold the phy and virt addr of every TxDL. */
 453 typedef struct list_info_hold {
 454         dma_addr_t list_phy_addr;
 455         void *list_virt_addr;
 456 } list_info_hold_t;
 457
 458 /* Rx descriptor structure for 1 buffer mode */
 459 typedef struct _RxD_t {
 460         u64 Host_Control;       /* reserved for host */
 461         u64 Control_1;
 462 #define RXD_OWN_XENA            BIT(7)
 463 #define RXD_T_CODE              (BIT(12)|BIT(13)|BIT(14)|BIT(15))
 464 #define RXD_FRAME_PROTO         vBIT(0xFFFF,24,8)
 465 #define RXD_FRAME_PROTO_IPV4    BIT(27)
 466 #define RXD_FRAME_PROTO_IPV6    BIT(28)
 467 #define RXD_FRAME_IP_FRAG       BIT(29)
 468 #define RXD_FRAME_PROTO_TCP     BIT(30)
 469 #define RXD_FRAME_PROTO_UDP     BIT(31)
 470 #define TCP_OR_UDP_FRAME        (RXD_FRAME_PROTO_TCP | RXD_FRAME_PROTO_UDP)
 471 #define RXD_GET_L3_CKSUM(val)   ((u16)(val>> 16) & 0xFFFF)
 472 #define RXD_GET_L4_CKSUM(val)   ((u16)(val) & 0xFFFF)
 473
 474         u64 Control_2;
 475 #define THE_RXD_MARK            0x3
 476 #define SET_RXD_MARKER          vBIT(THE_RXD_MARK, 0, 2)
 477 #define GET_RXD_MARKER(ctrl)    ((ctrl & SET_RXD_MARKER) >> 62)
 478
 479 #define MASK_VLAN_TAG           vBIT(0xFFFF,48,16)
 480 #define SET_VLAN_TAG(val)       vBIT(val,48,16)
 481 #define SET_NUM_TAG(val)       vBIT(val,16,32)
 482
 483
 484 } RxD_t;
 485 /* Rx descriptor structure for 1 buffer mode */
 486 typedef struct _RxD1_t {
 487         struct _RxD_t h;
 488
 489 #define MASK_BUFFER0_SIZE_1       vBIT(0x3FFF,2,14)
 490 #define SET_BUFFER0_SIZE_1(val)   vBIT(val,2,14)
 491 #define RXD_GET_BUFFER0_SIZE_1(_Control_2) \
 492         (u16)((_Control_2 & MASK_BUFFER0_SIZE_1) >> 48)
 493         u64 Buffer0_ptr;
 494 } RxD1_t;
 495 /* Rx descriptor structure for 3 or 2 buffer mode */
 496
 497 typedef struct _RxD3_t {
 498         struct _RxD_t h;
 499
 500 #define MASK_BUFFER0_SIZE_3       vBIT(0xFF,2,14)
 501 #define MASK_BUFFER1_SIZE_3       vBIT(0xFFFF,16,16)
 502 #define MASK_BUFFER2_SIZE_3       vBIT(0xFFFF,32,16)
 503 #define SET_BUFFER0_SIZE_3(val)   vBIT(val,8,8)
 504 #define SET_BUFFER1_SIZE_3(val)   vBIT(val,16,16)
 505 #define SET_BUFFER2_SIZE_3(val)   vBIT(val,32,16)
 506 #define RXD_GET_BUFFER0_SIZE_3(Control_2) \
 507         (u8)((Control_2 & MASK_BUFFER0_SIZE_3) >> 48)
 508 #define RXD_GET_BUFFER1_SIZE_3(Control_2) \
 509         (u16)((Control_2 & MASK_BUFFER1_SIZE_3) >> 32)
 510 #define RXD_GET_BUFFER2_SIZE_3(Control_2) \
 511         (u16)((Control_2 & MASK_BUFFER2_SIZE_3) >> 16)
 512 #define BUF0_LEN        40
 513 #define BUF1_LEN        1
 514
 515         u64 Buffer0_ptr;
 516         u64 Buffer1_ptr;
 517         u64 Buffer2_ptr;
 518 } RxD3_t;
 519
 520
 521 /* Structure that represents the Rx descriptor block which contains
 522  * 128 Rx descriptors.
 523  */
 524 typedef struct _RxD_block {
 525 #define MAX_RXDS_PER_BLOCK_1            127
 526         RxD1_t rxd[MAX_RXDS_PER_BLOCK_1];
 527
 528         u64 reserved_0;
 529 #define END_OF_BLOCK    0xFEFFFFFFFFFFFFFFULL
 530         u64 reserved_1;         /* 0xFEFFFFFFFFFFFFFF to mark last
 531                                  * Rxd in this blk */
 532         u64 reserved_2_pNext_RxD_block; /* Logical ptr to next */
 533         u64 pNext_RxD_Blk_physical;     /* Buff0_ptr.In a 32 bit arch
 534                                          * the upper 32 bits should
 535                                          * be 0 */
 536 } RxD_block_t;
 537
 538 #define SIZE_OF_BLOCK   4096
 539
 540 #define RXD_MODE_1      0
 541 #define RXD_MODE_3A     1
 542 #define RXD_MODE_3B     2
 543
 544 /* Structure to hold virtual addresses of Buf0 and Buf1 in
 545  * 2buf mode. */
 546 typedef struct bufAdd {
 547         void *ba_0_org;
 548         void *ba_1_org;
 549         void *ba_0;
 550         void *ba_1;
 551 } buffAdd_t;
 552
 553 /* Structure which stores all the MAC control parameters */
 554
 555 /* This structure stores the offset of the RxD in the ring
 556  * from which the Rx Interrupt processor can start picking
 557  * up the RxDs for processing.
 558  */
 559 typedef struct _rx_curr_get_info_t {
 560         u32 block_index;
 561         u32 offset;
 562         u32 ring_len;
 563 } rx_curr_get_info_t;
 564
 565 typedef rx_curr_get_info_t rx_curr_put_info_t;
 566
 567 /* This structure stores the offset of the TxDl in the FIFO
 568  * from which the Tx Interrupt processor can start picking
 569  * up the TxDLs for send complete interrupt processing.
 570  */
 571 typedef struct {
 572         u32 offset;
 573         u32 fifo_len;
 574 } tx_curr_get_info_t;
 575
 576 typedef tx_curr_get_info_t tx_curr_put_info_t;
 577
 578
 579 typedef struct rxd_info {
 580         void *virt_addr;
 581         dma_addr_t dma_addr;
 582 }rxd_info_t;
 583
 584 /* Structure that holds the Phy and virt addresses of the Blocks */
 585 typedef struct rx_block_info {
 586         void *block_virt_addr;
 587         dma_addr_t block_dma_addr;
 588         rxd_info_t *rxds;
 589 } rx_block_info_t;
 590
 591 /* pre declaration of the nic structure */
 592 typedef struct s2io_nic nic_t;
 593
 594 /* Ring specific structure */
 595 typedef struct ring_info {
 596         /* The ring number */
 597         int ring_no;
 598
 599         /*
 600          *  Place holders for the virtual and physical addresses of
 601          *  all the Rx Blocks
 602          */
 603         rx_block_info_t rx_blocks[MAX_RX_BLOCKS_PER_RING];
 604         int block_count;
 605         int pkt_cnt;
 606
 607         /*
 608          * Put pointer info which indictes which RxD has to be replenished
 609          * with a new buffer.
 610          */
 611         rx_curr_put_info_t rx_curr_put_info;
 612
 613         /*
 614          * Get pointer info which indictes which is the last RxD that was
 615          * processed by the driver.
 616          */
 617         rx_curr_get_info_t rx_curr_get_info;
 618
 619 #ifndef CONFIG_S2IO_NAPI
 620         /* Index to the absolute position of the put pointer of Rx ring */
 621         int put_pos;
 622 #endif
 623
 624         /* Buffer Address store. */
 625         buffAdd_t **ba;
 626         nic_t *nic;
 627 } ring_info_t;
 628
 629 /* Fifo specific structure */
 630 typedef struct fifo_info {
 631         /* FIFO number */
 632         int fifo_no;
 633
 634         /* Maximum TxDs per TxDL */
 635         int max_txds;
 636
 637         /* Place holder of all the TX List's Phy and Virt addresses. */
 638         list_info_hold_t *list_info;
 639
 640         /*
 641          * Current offset within the tx FIFO where driver would write
 642          * new Tx frame
 643          */
 644         tx_curr_put_info_t tx_curr_put_info;
 645
 646         /*
 647          * Current offset within tx FIFO from where the driver would start freeing
 648          * the buffers
 649          */
 650         tx_curr_get_info_t tx_curr_get_info;
 651
 652         nic_t *nic;
 653 }fifo_info_t;
 654
 655 /* Information related to the Tx and Rx FIFOs and Rings of Xena
 656  * is maintained in this structure.
 657  */
 658 typedef struct mac_info {
 659 /* tx side stuff */
 660         /* logical pointer of start of each Tx FIFO */
 661         TxFIFO_element_t __iomem *tx_FIFO_start[MAX_TX_FIFOS];
 662
 663         /* Fifo specific structure */
 664         fifo_info_t fifos[MAX_TX_FIFOS];
 665
 666         /* Save virtual address of TxD page with zero DMA addr(if any) */
 667         void *zerodma_virt_addr;
 668
 669 /* rx side stuff */
 670         /* Ring specific structure */
 671         ring_info_t rings[MAX_RX_RINGS];
 672
 673         u16 rmac_pause_time;
 674         u16 mc_pause_threshold_q0q3;
 675         u16 mc_pause_threshold_q4q7;
 676
 677         void *stats_mem;        /* orignal pointer to allocated mem */
 678         dma_addr_t stats_mem_phy;       /* Physical address of the stat block */
 679         u32 stats_mem_sz;
 680         StatInfo_t *stats_info; /* Logical address of the stat block */
 681 } mac_info_t;
 682
 683 /* structure representing the user defined MAC addresses */
 684 typedef struct {
 685         char addr[ETH_ALEN];
 686         int usage_cnt;
 687 } usr_addr_t;
 688
 689 /* Default Tunable parameters of the NIC. */
 690 #define DEFAULT_FIFO_0_LEN 4096
 691 #define DEFAULT_FIFO_1_7_LEN 512
 692 #define SMALL_BLK_CNT   30
 693 #define LARGE_BLK_CNT   100
 694
 695 /*
 696  * Structure to keep track of the MSI-X vectors and the corresponding
 697  * argument registered against each vector
 698  */
 699 #define MAX_REQUESTED_MSI_X     17
 700 struct s2io_msix_entry
 701 {
 702         u16 vector;
 703         u16 entry;
 704         void *arg;
 705
 706         u8 type;
 707 #define MSIX_FIFO_TYPE  1
 708 #define MSIX_RING_TYPE  2
 709
 710         u8 in_use;
 711 #define MSIX_REGISTERED_SUCCESS 0xAA
 712 };
 713
 714 struct msix_info_st {
 715         u64 addr;
 716         u64 data;
 717 };
 718
 719 /* Data structure to represent a LRO session */
 720 typedef struct lro {
 721         struct sk_buff  *parent;
 722         struct sk_buff  *last_frag;
 723         u8              *l2h;
 724         struct iphdr    *iph;
 725         struct tcphdr   *tcph;
 726         u32             tcp_next_seq;
 727         u32             tcp_ack;
 728         int             total_len;
 729         int             frags_len;
 730         int             sg_num;
 731         int             in_use;
 732         u16             window;
 733         u32             cur_tsval;
 734         u32             cur_tsecr;
 735         u8              saw_ts;
 736 }lro_t;
 737
 738 /* Structure representing one instance of the NIC */
 739 struct s2io_nic {
 740         int rxd_mode;
 741 #ifdef CONFIG_S2IO_NAPI
 742         /*
 743          * Count of packets to be processed in a given iteration, it will be indicated
 744          * by the quota field of the device structure when NAPI is enabled.
 745          */
 746         int pkts_to_process;
 747 #endif
 748         struct net_device *dev;
 749         mac_info_t mac_control;
 750         struct config_param config;
 751         struct pci_dev *pdev;
 752         void __iomem *bar0;
 753         void __iomem *bar1;
 754 #define MAX_MAC_SUPPORTED   16
 755 #define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
 756
 757         macaddr_t def_mac_addr[MAX_MAC_SUPPORTED];
 758         macaddr_t pre_mac_addr[MAX_MAC_SUPPORTED];
 759
 760         struct net_device_stats stats;
 761         int high_dma_flag;
 762         int device_close_flag;
 763         int device_enabled_once;
 764
 765         char name[60];
 766         struct tasklet_struct task;
 767         volatile unsigned long tasklet_status;
 768
 769         /* Timer that handles I/O errors/exceptions */
 770         struct timer_list alarm_timer;
 771
 772         /* Space to back up the PCI config space */
 773         u32 config_space[256 / sizeof(u32)];
 774
 775         atomic_t rx_bufs_left[MAX_RX_RINGS];
 776
 777         spinlock_t tx_lock;
 778 #ifndef CONFIG_S2IO_NAPI
 779         spinlock_t put_lock;
 780 #endif
 781
 782 #define PROMISC     1
 783 #define ALL_MULTI   2
 784
 785 #define MAX_ADDRS_SUPPORTED 64
 786         u16 usr_addr_count;
 787         u16 mc_addr_count;
 788         usr_addr_t usr_addrs[MAX_ADDRS_SUPPORTED];
 789
 790         u16 m_cast_flg;
 791         u16 all_multi_pos;
 792         u16 promisc_flg;
 793
 794         u16 tx_pkt_count;
 795         u16 rx_pkt_count;
 796         u16 tx_err_count;
 797         u16 rx_err_count;
 798
 799         /*  Id timer, used to blink NIC to physically identify NIC. */
 800         struct timer_list id_timer;
 801
 802         /*  Restart timer, used to restart NIC if the device is stuck and
 803          *  a schedule task that will set the correct Link state once the
 804          *  NIC's PHY has stabilized after a state change.
 805          */
 806         struct work_struct rst_timer_task;
 807         struct work_struct set_link_task;
 808
 809         /* Flag that can be used to turn on or turn off the Rx checksum
 810          * offload feature.
 811          */
 812         int rx_csum;
 813
 814         /*  after blink, the adapter must be restored with original
 815          *  values.
 816          */
 817         u64 adapt_ctrl_org;
 818
 819         /* Last known link state. */
 820         u16 last_link_state;
 821 #define LINK_DOWN       1
 822 #define LINK_UP         2
 823
 824         int task_flag;
 825 #define CARD_DOWN 1
 826 #define CARD_UP 2
 827         atomic_t card_state;
 828         volatile unsigned long link_state;
 829         struct vlan_group *vlgrp;
 830 #define MSIX_FLG                0xA5
 831         struct msix_entry *entries;
 832         struct s2io_msix_entry *s2io_entries;
 833         char desc[MAX_REQUESTED_MSI_X][25];
 834
 835         int avail_msix_vectors; /* No. of MSI-X vectors granted by system */
 836
 837         struct msix_info_st msix_info[0x3f];
 838
 839 #define XFRAME_I_DEVICE         1
 840 #define XFRAME_II_DEVICE        2
 841         u8 device_type;
 842
 843 #define MAX_LRO_SESSIONS        32
 844         lro_t lro0_n[MAX_LRO_SESSIONS];
 845         unsigned long   clubbed_frms_cnt;
 846         unsigned long   sending_both;
 847         u8              lro;
 848         u16             lro_max_aggr_per_sess;
 849
 850 #define INTA    0
 851 #define MSI     1
 852 #define MSI_X   2
 853         u8 intr_type;
 854
 855         spinlock_t      rx_lock;
 856         atomic_t        isr_cnt;
 857         u64 *ufo_in_band_v;
 858 #define VPD_PRODUCT_NAME_LEN 50
 859         u8  product_name[VPD_PRODUCT_NAME_LEN];
 860 };
 861
 862 #define RESET_ERROR 1;
 863 #define CMD_ERROR   2;
 864
 865 /*  OS related system calls */
 866 #ifndef readq
 867 static inline u64 readq(void __iomem *addr)
 868 {
 869         u64 ret = 0;
 870         ret = readl(addr + 4);
 871         ret <<= 32;
 872         ret |= readl(addr);
 873
 874         return ret;
 875 }
 876 #endif
 877
 878 #ifndef writeq
 879 static inline void writeq(u64 val, void __iomem *addr)
 880 {
 881         writel((u32) (val), addr);
 882         writel((u32) (val >> 32), (addr + 4));
 883 }
 884 #endif
 885
 886 /*
 887  * Some registers have to be written in a particular order to
 888  * expect correct hardware operation. The macro SPECIAL_REG_WRITE
 889  * is used to perform such ordered writes. Defines UF (Upper First)
 890  * and LF (Lower First) will be used to specify the required write order.
 891  */
 892 #define UF      1
 893 #define LF      2
 894 static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order)
 895 {
 896         u32 ret;
 897
 898         if (order == LF) {
 899                 writel((u32) (val), addr);
 900                 ret = readl(addr);
 901                 writel((u32) (val >> 32), (addr + 4));
 902                 ret = readl(addr + 4);
 903         } else {
 904                 writel((u32) (val >> 32), (addr + 4));
 905                 ret = readl(addr + 4);
 906                 writel((u32) (val), addr);
 907                 ret = readl(addr);
 908         }
 909 }
 910
 911 /*  Interrupt related values of Xena */
 912
 913 #define ENABLE_INTRS    1
 914 #define DISABLE_INTRS   2
 915
 916 /*  Highest level interrupt blocks */
 917 #define TX_PIC_INTR     (0x0001<<0)
 918 #define TX_DMA_INTR     (0x0001<<1)
 919 #define TX_MAC_INTR     (0x0001<<2)
 920 #define TX_XGXS_INTR    (0x0001<<3)
 921 #define TX_TRAFFIC_INTR (0x0001<<4)
 922 #define RX_PIC_INTR     (0x0001<<5)
 923 #define RX_DMA_INTR     (0x0001<<6)
 924 #define RX_MAC_INTR     (0x0001<<7)
 925 #define RX_XGXS_INTR    (0x0001<<8)
 926 #define RX_TRAFFIC_INTR (0x0001<<9)
 927 #define MC_INTR         (0x0001<<10)
 928 #define ENA_ALL_INTRS    (   TX_PIC_INTR     | \
 929                             TX_DMA_INTR     | \
 930                             TX_MAC_INTR     | \
 931                             TX_XGXS_INTR    | \
 932                             TX_TRAFFIC_INTR | \
 933                             RX_PIC_INTR     | \
 934                             RX_DMA_INTR     | \
 935                             RX_MAC_INTR     | \
 936                             RX_XGXS_INTR    | \
 937                             RX_TRAFFIC_INTR | \
 938                             MC_INTR )
 939
 940 /*  Interrupt masks for the general interrupt mask register */
 941 #define DISABLE_ALL_INTRS   0xFFFFFFFFFFFFFFFFULL
 942
 943 #define TXPIC_INT_M         BIT(0)
 944 #define TXDMA_INT_M         BIT(1)
 945 #define TXMAC_INT_M         BIT(2)
 946 #define TXXGXS_INT_M        BIT(3)
 947 #define TXTRAFFIC_INT_M     BIT(8)
 948 #define PIC_RX_INT_M        BIT(32)
 949 #define RXDMA_INT_M         BIT(33)
 950 #define RXMAC_INT_M         BIT(34)
 951 #define MC_INT_M            BIT(35)
 952 #define RXXGXS_INT_M        BIT(36)
 953 #define RXTRAFFIC_INT_M     BIT(40)
 954
 955 /*  PIC level Interrupts TODO*/
 956
 957 /*  DMA level Inressupts */
 958 #define TXDMA_PFC_INT_M     BIT(0)
 959 #define TXDMA_PCC_INT_M     BIT(2)
 960
 961 /*  PFC block interrupts */
 962 #define PFC_MISC_ERR_1      BIT(0)      /* Interrupt to indicate FIFO full */
 963
 964 /* PCC block interrupts. */
 965 #define PCC_FB_ECC_ERR     vBIT(0xff, 16, 8)    /* Interrupt to indicate
 966                                                    PCC_FB_ECC Error. */
 967
 968 #define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG)
 969 /*
 970  * Prototype declaration.
 971  */
 972 static int __devinit s2io_init_nic(struct pci_dev *pdev,
 973                                    const struct pci_device_id *pre);
 974 static void __devexit s2io_rem_nic(struct pci_dev *pdev);
 975 static int init_shared_mem(struct s2io_nic *sp);
 976 static void free_shared_mem(struct s2io_nic *sp);
 977 static int init_nic(struct s2io_nic *nic);
 978 static void rx_intr_handler(ring_info_t *ring_data);
 979 static void tx_intr_handler(fifo_info_t *fifo_data);
 980 static void alarm_intr_handler(struct s2io_nic *sp);
 981
 982 static int s2io_starter(void);
 983 static void s2io_tx_watchdog(struct net_device *dev);
 984 static void s2io_tasklet(unsigned long dev_addr);
 985 static void s2io_set_multicast(struct net_device *dev);
 986 static int rx_osm_handler(ring_info_t *ring_data, RxD_t * rxdp);
 987 static void s2io_link(nic_t * sp, int link);
 988 #if defined(CONFIG_S2IO_NAPI)
 989 static int s2io_poll(struct net_device *dev, int *budget);
 990 #endif
 991 static void s2io_init_pci(nic_t * sp);
 992 static int s2io_set_mac_addr(struct net_device *dev, u8 * addr);
 993 static void s2io_alarm_handle(unsigned long data);
 994 static int s2io_enable_msi(nic_t *nic);
 995 static irqreturn_t s2io_msi_handle(int irq, void *dev_id);
 996 static irqreturn_t
 997 s2io_msix_ring_handle(int irq, void *dev_id);
 998 static irqreturn_t
 999 s2io_msix_fifo_handle(int irq, void *dev_id);
1000 static irqreturn_t s2io_isr(int irq, void *dev_id);
1001 static int verify_xena_quiescence(nic_t *sp, u64 val64, int flag);
1002 static const struct ethtool_ops netdev_ethtool_ops;
1003 static void s2io_set_link(struct work_struct *work);
1004 static int s2io_set_swapper(nic_t * sp);
1005 static void s2io_card_down(nic_t *nic);
1006 static int s2io_card_up(nic_t *nic);
1007 static int get_xena_rev_id(struct pci_dev *pdev);
1008 static void restore_xmsi_data(nic_t *nic);
1009
1010 static int s2io_club_tcp_session(u8 *buffer, u8 **tcp, u32 *tcp_len, lro_t **lro, RxD_t *rxdp, nic_t *sp);
1011 static void clear_lro_session(lro_t *lro);
1012 static void queue_rx_frame(struct sk_buff *skb);
1013 static void update_L3L4_header(nic_t *sp, lro_t *lro);
1014 static void lro_append_pkt(nic_t *sp, lro_t *lro, struct sk_buff *skb, u32 tcp_len);
1015
1016 #define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
1017 #define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
1018 #define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
1019
1020 #define S2IO_PARM_INT(X, def_val) \
1021         static unsigned int X = def_val;\
1022                 module_param(X , uint, 0);
1023
1024 #endif                          /* _S2IO_H */