kernel/2.6.29.6-aldebaran-rt/drivers/net/atlx/atl2.h

   1 /* atl2.h -- atl2 driver definitions
   2  *
   3  * Copyright(c) 2007 Atheros Corporation. All rights reserved.
   4  * Copyright(c) 2006 xiong huang <xiong.huang@atheros.com>
   5  * Copyright(c) 2007 Chris Snook <csnook@redhat.com>
   6  *
   7  * Derived from Intel e1000 driver
   8  * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the Free
  12  * Software Foundation; either version 2 of the License, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along with
  21  * this program; if not, write to the Free Software Foundation, Inc., 59
  22  * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23  */
  24
  25 #ifndef _ATL2_H_
  26 #define _ATL2_H_
  27
  28 #include <asm/atomic.h>
  29 #include <linux/netdevice.h>
  30
  31 #ifndef _ATL2_HW_H_
  32 #define _ATL2_HW_H_
  33
  34 #ifndef _ATL2_OSDEP_H_
  35 #define _ATL2_OSDEP_H_
  36
  37 #include <linux/pci.h>
  38 #include <linux/delay.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/if_ether.h>
  41
  42 #include "atlx.h"
  43
  44 #ifdef ETHTOOL_OPS_COMPAT
  45 extern int ethtool_ioctl(struct ifreq *ifr);
  46 #endif
  47
  48 #define PCI_COMMAND_REGISTER    PCI_COMMAND
  49 #define CMD_MEM_WRT_INVALIDATE  PCI_COMMAND_INVALIDATE
  50 #define ETH_ADDR_LEN            ETH_ALEN
  51
  52 #define ATL2_WRITE_REG(a, reg, value) (iowrite32((value), \
  53         ((a)->hw_addr + (reg))))
  54
  55 #define ATL2_WRITE_FLUSH(a) (ioread32((a)->hw_addr))
  56
  57 #define ATL2_READ_REG(a, reg) (ioread32((a)->hw_addr + (reg)))
  58
  59 #define ATL2_WRITE_REGB(a, reg, value) (iowrite8((value), \
  60         ((a)->hw_addr + (reg))))
  61
  62 #define ATL2_READ_REGB(a, reg) (ioread8((a)->hw_addr + (reg)))
  63
  64 #define ATL2_WRITE_REGW(a, reg, value) (iowrite16((value), \
  65         ((a)->hw_addr + (reg))))
  66
  67 #define ATL2_READ_REGW(a, reg) (ioread16((a)->hw_addr + (reg)))
  68
  69 #define ATL2_WRITE_REG_ARRAY(a, reg, offset, value) \
  70         (iowrite32((value), (((a)->hw_addr + (reg)) + ((offset) << 2))))
  71
  72 #define ATL2_READ_REG_ARRAY(a, reg, offset) \
  73         (ioread32(((a)->hw_addr + (reg)) + ((offset) << 2)))
  74
  75 #endif /* _ATL2_OSDEP_H_ */
  76
  77 struct atl2_adapter;
  78 struct atl2_hw;
  79
  80 /* function prototype */
  81 static s32 atl2_reset_hw(struct atl2_hw *hw);
  82 static s32 atl2_read_mac_addr(struct atl2_hw *hw);
  83 static s32 atl2_init_hw(struct atl2_hw *hw);
  84 static s32 atl2_get_speed_and_duplex(struct atl2_hw *hw, u16 *speed,
  85         u16 *duplex);
  86 static u32 atl2_hash_mc_addr(struct atl2_hw *hw, u8 *mc_addr);
  87 static void atl2_hash_set(struct atl2_hw *hw, u32 hash_value);
  88 static s32 atl2_read_phy_reg(struct atl2_hw *hw, u16 reg_addr, u16 *phy_data);
  89 static s32 atl2_write_phy_reg(struct atl2_hw *hw, u32 reg_addr, u16 phy_data);
  90 static void atl2_read_pci_cfg(struct atl2_hw *hw, u32 reg, u16 *value);
  91 static void atl2_write_pci_cfg(struct atl2_hw *hw, u32 reg, u16 *value);
  92 static void atl2_set_mac_addr(struct atl2_hw *hw);
  93 static bool atl2_read_eeprom(struct atl2_hw *hw, u32 Offset, u32 *pValue);
  94 static bool atl2_write_eeprom(struct atl2_hw *hw, u32 offset, u32 value);
  95 static s32 atl2_phy_init(struct atl2_hw *hw);
  96 static int atl2_check_eeprom_exist(struct atl2_hw *hw);
  97 static void atl2_force_ps(struct atl2_hw *hw);
  98
  99 /* register definition */
 100
 101 /* Block IDLE Status Register */
 102 #define IDLE_STATUS_RXMAC       1       /* 1: RXMAC is non-IDLE */
 103 #define IDLE_STATUS_TXMAC       2       /* 1: TXMAC is non-IDLE */
 104 #define IDLE_STATUS_DMAR        8       /* 1: DMAR is non-IDLE */
 105 #define IDLE_STATUS_DMAW        4       /* 1: DMAW is non-IDLE */
 106
 107 /* MDIO Control Register */
 108 #define MDIO_WAIT_TIMES         10
 109
 110 /* MAC Control Register */
 111 #define MAC_CTRL_DBG_TX_BKPRESURE       0x100000        /* 1: TX max backoff */
 112 #define MAC_CTRL_MACLP_CLK_PHY          0x8000000       /* 1: 25MHz from phy */
 113 #define MAC_CTRL_HALF_LEFT_BUF_SHIFT    28
 114 #define MAC_CTRL_HALF_LEFT_BUF_MASK     0xF             /* MAC retry buf x32B */
 115
 116 /* Internal SRAM Partition Register */
 117 #define REG_SRAM_TXRAM_END      0x1500  /* Internal tail address of TXRAM
 118                                          * default: 2byte*1024 */
 119 #define REG_SRAM_RXRAM_END      0x1502  /* Internal tail address of RXRAM
 120                                          * default: 2byte*1024 */
 121
 122 /* Descriptor Control register */
 123 #define REG_TXD_BASE_ADDR_LO    0x1544  /* The base address of the Transmit
 124                                          * Data Mem low 32-bit(dword align) */
 125 #define REG_TXD_MEM_SIZE        0x1548  /* Transmit Data Memory size(by
 126                                          * double word , max 256KB) */
 127 #define REG_TXS_BASE_ADDR_LO    0x154C  /* The base address of the Transmit
 128                                          * Status Memory low 32-bit(dword word
 129                                          * align) */
 130 #define REG_TXS_MEM_SIZE        0x1550  /* double word unit, max 4*2047
 131                                          * bytes. */
 132 #define REG_RXD_BASE_ADDR_LO    0x1554  /* The base address of the Transmit
 133                                          * Status Memory low 32-bit(unit 8
 134                                          * bytes) */
 135 #define REG_RXD_BUF_NUM         0x1558  /* Receive Data & Status Memory buffer
 136                                          * number (unit 1536bytes, max
 137                                          * 1536*2047) */
 138
 139 /* DMAR Control Register */
 140 #define REG_DMAR        0x1580
 141 #define     DMAR_EN     0x1     /* 1: Enable DMAR */
 142
 143 /* TX Cur-Through (early tx threshold) Control Register */
 144 #define REG_TX_CUT_THRESH       0x1590  /* TxMac begin transmit packet
 145                                          * threshold(unit word) */
 146
 147 /* DMAW Control Register */
 148 #define REG_DMAW        0x15A0
 149 #define     DMAW_EN     0x1
 150
 151 /* Flow control register */
 152 #define REG_PAUSE_ON_TH         0x15A8  /* RXD high watermark of overflow
 153                                          * threshold configuration register */
 154 #define REG_PAUSE_OFF_TH        0x15AA  /* RXD lower watermark of overflow
 155                                          * threshold configuration register */
 156
 157 /* Mailbox Register */
 158 #define REG_MB_TXD_WR_IDX       0x15f0  /* double word align */
 159 #define REG_MB_RXD_RD_IDX       0x15F4  /* RXD Read index (unit: 1536byets) */
 160
 161 /* Interrupt Status Register */
 162 #define ISR_TIMER       1       /* Interrupt when Timer counts down to zero */
 163 #define ISR_MANUAL      2       /* Software manual interrupt, for debug. Set
 164                                  * when SW_MAN_INT_EN is set in Table 51
 165                                  * Selene Master Control Register
 166                                  * (Offset 0x1400). */
 167 #define ISR_RXF_OV      4       /* RXF overflow interrupt */
 168 #define ISR_TXF_UR      8       /* TXF underrun interrupt */
 169 #define ISR_TXS_OV      0x10    /* Internal transmit status buffer full
 170                                  * interrupt */
 171 #define ISR_RXS_OV      0x20    /* Internal receive status buffer full
 172                                  * interrupt */
 173 #define ISR_LINK_CHG    0x40    /* Link Status Change Interrupt */
 174 #define ISR_HOST_TXD_UR 0x80
 175 #define ISR_HOST_RXD_OV 0x100   /* Host rx data memory full , one pulse */
 176 #define ISR_DMAR_TO_RST 0x200   /* DMAR op timeout interrupt. SW should
 177                                  * do Reset */
 178 #define ISR_DMAW_TO_RST 0x400
 179 #define ISR_PHY         0x800   /* phy interrupt */
 180 #define ISR_TS_UPDATE   0x10000 /* interrupt after new tx pkt status written
 181                                  * to host */
 182 #define ISR_RS_UPDATE   0x20000 /* interrupt ater new rx pkt status written
 183                                  * to host. */
 184 #define ISR_TX_EARLY    0x40000 /* interrupt when txmac begin transmit one
 185                                  * packet */
 186
 187 #define ISR_TX_EVENT (ISR_TXF_UR | ISR_TXS_OV | ISR_HOST_TXD_UR |\
 188         ISR_TS_UPDATE | ISR_TX_EARLY)
 189 #define ISR_RX_EVENT (ISR_RXF_OV | ISR_RXS_OV | ISR_HOST_RXD_OV |\
 190          ISR_RS_UPDATE)
 191
 192 #define IMR_NORMAL_MASK         (\
 193         /*ISR_LINK_CHG          |*/\
 194         ISR_MANUAL              |\
 195         ISR_DMAR_TO_RST         |\
 196         ISR_DMAW_TO_RST         |\
 197         ISR_PHY                 |\
 198         ISR_PHY_LINKDOWN        |\
 199         ISR_TS_UPDATE           |\
 200         ISR_RS_UPDATE)
 201
 202 /* Receive MAC Statistics Registers */
 203 #define REG_STS_RX_PAUSE        0x1700  /* Num pause packets received */
 204 #define REG_STS_RXD_OV          0x1704  /* Num frames dropped due to RX
 205                                          * FIFO overflow */
 206 #define REG_STS_RXS_OV          0x1708  /* Num frames dropped due to RX
 207                                          * Status Buffer Overflow */
 208 #define REG_STS_RX_FILTER       0x170C  /* Num packets dropped due to
 209                                          * address filtering */
 210
 211 /* MII definitions */
 212
 213 /* PHY Common Register */
 214 #define MII_SMARTSPEED  0x14
 215 #define MII_DBG_ADDR    0x1D
 216 #define MII_DBG_DATA    0x1E
 217
 218 /* PCI Command Register Bit Definitions */
 219 #define PCI_REG_COMMAND         0x04
 220 #define CMD_IO_SPACE            0x0001
 221 #define CMD_MEMORY_SPACE        0x0002
 222 #define CMD_BUS_MASTER          0x0004
 223
 224 #define MEDIA_TYPE_100M_FULL    1
 225 #define MEDIA_TYPE_100M_HALF    2
 226 #define MEDIA_TYPE_10M_FULL     3
 227 #define MEDIA_TYPE_10M_HALF     4
 228
 229 #define AUTONEG_ADVERTISE_SPEED_DEFAULT 0x000F  /* Everything */
 230
 231 /* The size (in bytes) of a ethernet packet */
 232 #define ENET_HEADER_SIZE                14
 233 #define MAXIMUM_ETHERNET_FRAME_SIZE     1518    /* with FCS */
 234 #define MINIMUM_ETHERNET_FRAME_SIZE     64      /* with FCS */
 235 #define ETHERNET_FCS_SIZE               4
 236 #define MAX_JUMBO_FRAME_SIZE            0x2000
 237 #define VLAN_SIZE                                               4
 238
 239 struct tx_pkt_header {
 240         unsigned pkt_size:11;
 241         unsigned:4;                     /* reserved */
 242         unsigned ins_vlan:1;            /* txmac should insert vlan */
 243         unsigned short vlan;            /* vlan tag */
 244 };
 245 /* FIXME: replace above bitfields with MASK/SHIFT defines below */
 246 #define TX_PKT_HEADER_SIZE_MASK         0x7FF
 247 #define TX_PKT_HEADER_SIZE_SHIFT        0
 248 #define TX_PKT_HEADER_INS_VLAN_MASK     0x1
 249 #define TX_PKT_HEADER_INS_VLAN_SHIFT    15
 250 #define TX_PKT_HEADER_VLAN_TAG_MASK     0xFFFF
 251 #define TX_PKT_HEADER_VLAN_TAG_SHIFT    16
 252
 253 struct tx_pkt_status {
 254         unsigned pkt_size:11;
 255         unsigned:5;             /* reserved */
 256         unsigned ok:1;          /* current packet transmitted without error */
 257         unsigned bcast:1;       /* broadcast packet */
 258         unsigned mcast:1;       /* multicast packet */
 259         unsigned pause:1;       /* transmiited a pause frame */
 260         unsigned ctrl:1;
 261         unsigned defer:1;       /* current packet is xmitted with defer */
 262         unsigned exc_defer:1;
 263         unsigned single_col:1;
 264         unsigned multi_col:1;
 265         unsigned late_col:1;
 266         unsigned abort_col:1;
 267         unsigned underun:1;     /* current packet is aborted
 268                                  * due to txram underrun */
 269         unsigned:3;             /* reserved */
 270         unsigned update:1;      /* always 1'b1 in tx_status_buf */
 271 };
 272 /* FIXME: replace above bitfields with MASK/SHIFT defines below */
 273 #define TX_PKT_STATUS_SIZE_MASK         0x7FF
 274 #define TX_PKT_STATUS_SIZE_SHIFT        0
 275 #define TX_PKT_STATUS_OK_MASK           0x1
 276 #define TX_PKT_STATUS_OK_SHIFT          16
 277 #define TX_PKT_STATUS_BCAST_MASK        0x1
 278 #define TX_PKT_STATUS_BCAST_SHIFT       17
 279 #define TX_PKT_STATUS_MCAST_MASK        0x1
 280 #define TX_PKT_STATUS_MCAST_SHIFT       18
 281 #define TX_PKT_STATUS_PAUSE_MASK        0x1
 282 #define TX_PKT_STATUS_PAUSE_SHIFT       19
 283 #define TX_PKT_STATUS_CTRL_MASK         0x1
 284 #define TX_PKT_STATUS_CTRL_SHIFT        20
 285 #define TX_PKT_STATUS_DEFER_MASK        0x1
 286 #define TX_PKT_STATUS_DEFER_SHIFT       21
 287 #define TX_PKT_STATUS_EXC_DEFER_MASK    0x1
 288 #define TX_PKT_STATUS_EXC_DEFER_SHIFT   22
 289 #define TX_PKT_STATUS_SINGLE_COL_MASK   0x1
 290 #define TX_PKT_STATUS_SINGLE_COL_SHIFT  23
 291 #define TX_PKT_STATUS_MULTI_COL_MASK    0x1
 292 #define TX_PKT_STATUS_MULTI_COL_SHIFT   24
 293 #define TX_PKT_STATUS_LATE_COL_MASK     0x1
 294 #define TX_PKT_STATUS_LATE_COL_SHIFT    25
 295 #define TX_PKT_STATUS_ABORT_COL_MASK    0x1
 296 #define TX_PKT_STATUS_ABORT_COL_SHIFT   26
 297 #define TX_PKT_STATUS_UNDERRUN_MASK     0x1
 298 #define TX_PKT_STATUS_UNDERRUN_SHIFT    27
 299 #define TX_PKT_STATUS_UPDATE_MASK       0x1
 300 #define TX_PKT_STATUS_UPDATE_SHIFT      31
 301
 302 struct rx_pkt_status {
 303         unsigned pkt_size:11;   /* packet size, max 2047 bytes */
 304         unsigned:5;             /* reserved */
 305         unsigned ok:1;          /* current packet received ok without error */
 306         unsigned bcast:1;       /* current packet is broadcast */
 307         unsigned mcast:1;       /* current packet is multicast */
 308         unsigned pause:1;
 309         unsigned ctrl:1;
 310         unsigned crc:1;         /* received a packet with crc error */
 311         unsigned code:1;        /* received a packet with code error */
 312         unsigned runt:1;        /* received a packet less than 64 bytes
 313                                  * with good crc */
 314         unsigned frag:1;        /* received a packet less than 64 bytes
 315                                  * with bad crc */
 316         unsigned trunc:1;       /* current frame truncated due to rxram full */
 317         unsigned align:1;       /* this packet is alignment error */
 318         unsigned vlan:1;        /* this packet has vlan */
 319         unsigned:3;             /* reserved */
 320         unsigned update:1;
 321         unsigned short vtag;    /* vlan tag */
 322         unsigned:16;
 323 };
 324 /* FIXME: replace above bitfields with MASK/SHIFT defines below */
 325 #define RX_PKT_STATUS_SIZE_MASK         0x7FF
 326 #define RX_PKT_STATUS_SIZE_SHIFT        0
 327 #define RX_PKT_STATUS_OK_MASK           0x1
 328 #define RX_PKT_STATUS_OK_SHIFT          16
 329 #define RX_PKT_STATUS_BCAST_MASK        0x1
 330 #define RX_PKT_STATUS_BCAST_SHIFT       17
 331 #define RX_PKT_STATUS_MCAST_MASK        0x1
 332 #define RX_PKT_STATUS_MCAST_SHIFT       18
 333 #define RX_PKT_STATUS_PAUSE_MASK        0x1
 334 #define RX_PKT_STATUS_PAUSE_SHIFT       19
 335 #define RX_PKT_STATUS_CTRL_MASK         0x1
 336 #define RX_PKT_STATUS_CTRL_SHIFT        20
 337 #define RX_PKT_STATUS_CRC_MASK          0x1
 338 #define RX_PKT_STATUS_CRC_SHIFT         21
 339 #define RX_PKT_STATUS_CODE_MASK         0x1
 340 #define RX_PKT_STATUS_CODE_SHIFT        22
 341 #define RX_PKT_STATUS_RUNT_MASK         0x1
 342 #define RX_PKT_STATUS_RUNT_SHIFT        23
 343 #define RX_PKT_STATUS_FRAG_MASK         0x1
 344 #define RX_PKT_STATUS_FRAG_SHIFT        24
 345 #define RX_PKT_STATUS_TRUNK_MASK        0x1
 346 #define RX_PKT_STATUS_TRUNK_SHIFT       25
 347 #define RX_PKT_STATUS_ALIGN_MASK        0x1
 348 #define RX_PKT_STATUS_ALIGN_SHIFT       26
 349 #define RX_PKT_STATUS_VLAN_MASK         0x1
 350 #define RX_PKT_STATUS_VLAN_SHIFT        27
 351 #define RX_PKT_STATUS_UPDATE_MASK       0x1
 352 #define RX_PKT_STATUS_UPDATE_SHIFT      31
 353 #define RX_PKT_STATUS_VLAN_TAG_MASK     0xFFFF
 354 #define RX_PKT_STATUS_VLAN_TAG_SHIFT    32
 355
 356 struct rx_desc {
 357         struct rx_pkt_status    status;
 358         unsigned char           packet[1536-sizeof(struct rx_pkt_status)];
 359 };
 360
 361 enum atl2_speed_duplex {
 362         atl2_10_half = 0,
 363         atl2_10_full = 1,
 364         atl2_100_half = 2,
 365         atl2_100_full = 3
 366 };
 367
 368 struct atl2_spi_flash_dev {
 369         const char *manu_name;  /* manufacturer id */
 370         /* op-code */
 371         u8 cmdWRSR;
 372         u8 cmdREAD;
 373         u8 cmdPROGRAM;
 374         u8 cmdWREN;
 375         u8 cmdWRDI;
 376         u8 cmdRDSR;
 377         u8 cmdRDID;
 378         u8 cmdSECTOR_ERASE;
 379         u8 cmdCHIP_ERASE;
 380 };
 381
 382 /* Structure containing variables used by the shared code (atl2_hw.c) */
 383 struct atl2_hw {
 384         u8 __iomem *hw_addr;
 385         void *back;
 386
 387         u8 preamble_len;
 388         u8 max_retry;          /* Retransmission maximum, afterwards the
 389                                 * packet will be discarded. */
 390         u8 jam_ipg;            /* IPG to start JAM for collision based flow
 391                                 * control in half-duplex mode. In unit of
 392                                 * 8-bit time. */
 393         u8 ipgt;               /* Desired back to back inter-packet gap. The
 394                                 * default is 96-bit time. */
 395         u8 min_ifg;            /* Minimum number of IFG to enforce in between
 396                                 * RX frames. Frame gap below such IFP is
 397                                 * dropped. */
 398         u8 ipgr1;              /* 64bit Carrier-Sense window */
 399         u8 ipgr2;              /* 96-bit IPG window */
 400         u8 retry_buf;          /* When half-duplex mode, should hold some
 401                                 * bytes for mac retry . (8*4bytes unit) */
 402
 403         u16 fc_rxd_hi;
 404         u16 fc_rxd_lo;
 405         u16 lcol;              /* Collision Window */
 406         u16 max_frame_size;
 407
 408         u16 MediaType;
 409         u16 autoneg_advertised;
 410         u16 pci_cmd_word;
 411
 412         u16 mii_autoneg_adv_reg;
 413
 414         u32 mem_rang;
 415         u32 txcw;
 416         u32 mc_filter_type;
 417         u32 num_mc_addrs;
 418         u32 collision_delta;
 419         u32 tx_packet_delta;
 420         u16 phy_spd_default;
 421
 422         u16 device_id;
 423         u16 vendor_id;
 424         u16 subsystem_id;
 425         u16 subsystem_vendor_id;
 426         u8 revision_id;
 427
 428         /* spi flash */
 429         u8 flash_vendor;
 430
 431         u8 dma_fairness;
 432         u8 mac_addr[NODE_ADDRESS_SIZE];
 433         u8 perm_mac_addr[NODE_ADDRESS_SIZE];
 434
 435         /* FIXME */
 436         /* bool phy_preamble_sup; */
 437         bool phy_configured;
 438 };
 439
 440 #endif /* _ATL2_HW_H_ */
 441
 442 struct atl2_ring_header {
 443     /* pointer to the descriptor ring memory */
 444     void *desc;
 445     /* physical adress of the descriptor ring */
 446     dma_addr_t dma;
 447     /* length of descriptor ring in bytes */
 448     unsigned int size;
 449 };
 450
 451 /* board specific private data structure */
 452 struct atl2_adapter {
 453         /* OS defined structs */
 454         struct net_device *netdev;
 455         struct pci_dev *pdev;
 456 #ifdef NETIF_F_HW_VLAN_TX
 457         struct vlan_group *vlgrp;
 458 #endif
 459         u32 wol;
 460         u16 link_speed;
 461         u16 link_duplex;
 462
 463         spinlock_t stats_lock;
 464
 465         struct work_struct reset_task;
 466         struct work_struct link_chg_task;
 467         struct timer_list watchdog_timer;
 468         struct timer_list phy_config_timer;
 469
 470         unsigned long cfg_phy;
 471         bool mac_disabled;
 472
 473         /* All Descriptor memory */
 474         dma_addr_t      ring_dma;
 475         void            *ring_vir_addr;
 476         int             ring_size;
 477
 478         struct tx_pkt_header    *txd_ring;
 479         dma_addr_t      txd_dma;
 480
 481         struct tx_pkt_status    *txs_ring;
 482         dma_addr_t      txs_dma;
 483
 484         struct rx_desc  *rxd_ring;
 485         dma_addr_t      rxd_dma;
 486
 487         u32 txd_ring_size;         /* bytes per unit */
 488         u32 txs_ring_size;         /* dwords per unit */
 489         u32 rxd_ring_size;         /* 1536 bytes per unit */
 490
 491         /* read /write ptr: */
 492         /* host */
 493         u32 txd_write_ptr;
 494         u32 txs_next_clear;
 495         u32 rxd_read_ptr;
 496
 497         /* nic */
 498         atomic_t txd_read_ptr;
 499         atomic_t txs_write_ptr;
 500         u32 rxd_write_ptr;
 501
 502         /* Interrupt Moderator timer ( 2us resolution) */
 503         u16 imt;
 504         /* Interrupt Clear timer (2us resolution) */
 505         u16 ict;
 506
 507         unsigned long flags;
 508         /* structs defined in atl2_hw.h */
 509         u32 bd_number;     /* board number */
 510         bool pci_using_64;
 511         bool have_msi;
 512         struct atl2_hw hw;
 513
 514         u32 usr_cmd;
 515         /* FIXME */
 516         /* u32 regs_buff[ATL2_REGS_LEN]; */
 517         u32 pci_state[16];
 518
 519         u32 *config_space;
 520 };
 521
 522 enum atl2_state_t {
 523         __ATL2_TESTING,
 524         __ATL2_RESETTING,
 525         __ATL2_DOWN
 526 };
 527
 528 #endif /* _ATL2_H_ */