drivers/net/e1000e/e1000.h

   1 /*******************************************************************************
   2
   3   Intel PRO/1000 Linux driver
   4   Copyright(c) 1999 - 2008 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   Linux NICS <linux.nics@intel.com>
  24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26
  27 *******************************************************************************/
  28
  29 /* Linux PRO/1000 Ethernet Driver main header file */
  30
  31 #ifndef _E1000_H_
  32 #define _E1000_H_
  33
  34 #include <linux/types.h>
  35 #include <linux/timer.h>
  36 #include <linux/workqueue.h>
  37 #include <linux/io.h>
  38 #include <linux/netdevice.h>
  39
  40 #include "hw.h"
  41
  42 struct e1000_info;
  43
  44 #define ndev_printk(level, netdev, format, arg...) \
  45         printk(level "%s: " format, (netdev)->name, ## arg)
  46
  47 #ifdef DEBUG
  48 #define ndev_dbg(netdev, format, arg...) \
  49         ndev_printk(KERN_DEBUG , netdev, format, ## arg)
  50 #else
  51 #define ndev_dbg(netdev, format, arg...) do { (void)(netdev); } while (0)
  52 #endif
  53
  54 #define ndev_err(netdev, format, arg...) \
  55         ndev_printk(KERN_ERR , netdev, format, ## arg)
  56 #define ndev_info(netdev, format, arg...) \
  57         ndev_printk(KERN_INFO , netdev, format, ## arg)
  58 #define ndev_warn(netdev, format, arg...) \
  59         ndev_printk(KERN_WARNING , netdev, format, ## arg)
  60 #define ndev_notice(netdev, format, arg...) \
  61         ndev_printk(KERN_NOTICE , netdev, format, ## arg)
  62
  63
  64 /* Tx/Rx descriptor defines */
  65 #define E1000_DEFAULT_TXD               256
  66 #define E1000_MAX_TXD                   4096
  67 #define E1000_MIN_TXD                   64
  68
  69 #define E1000_DEFAULT_RXD               256
  70 #define E1000_MAX_RXD                   4096
  71 #define E1000_MIN_RXD                   64
  72
  73 #define E1000_MIN_ITR_USECS             10 /* 100000 irq/sec */
  74 #define E1000_MAX_ITR_USECS             10000 /* 100    irq/sec */
  75
  76 /* Early Receive defines */
  77 #define E1000_ERT_2048                  0x100
  78
  79 #define E1000_FC_PAUSE_TIME             0x0680 /* 858 usec */
  80
  81 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
  82 /* How many Rx Buffers do we bundle into one write to the hardware ? */
  83 #define E1000_RX_BUFFER_WRITE           16 /* Must be power of 2 */
  84
  85 #define AUTO_ALL_MODES                  0
  86 #define E1000_EEPROM_APME               0x0400
  87
  88 #define E1000_MNG_VLAN_NONE             (-1)
  89
  90 /* Number of packet split data buffers (not including the header buffer) */
  91 #define PS_PAGE_BUFFERS                 (MAX_PS_BUFFERS - 1)
  92
  93 enum e1000_boards {
  94         board_82571,
  95         board_82572,
  96         board_82573,
  97         board_80003es2lan,
  98         board_ich8lan,
  99         board_ich9lan,
 100 };
 101
 102 struct e1000_queue_stats {
 103         u64 packets;
 104         u64 bytes;
 105 };
 106
 107 struct e1000_ps_page {
 108         struct page *page;
 109         u64 dma; /* must be u64 - written to hw */
 110 };
 111
 112 /*
 113  * wrappers around a pointer to a socket buffer,
 114  * so a DMA handle can be stored along with the buffer
 115  */
 116 struct e1000_buffer {
 117         dma_addr_t dma;
 118         struct sk_buff *skb;
 119         union {
 120                 /* Tx */
 121                 struct {
 122                         unsigned long time_stamp;
 123                         u16 length;
 124                         u16 next_to_watch;
 125                 };
 126                 /* Rx */
 127                 /* arrays of page information for packet split */
 128                 struct e1000_ps_page *ps_pages;
 129         };
 130
 131 };
 132
 133 struct e1000_ring {
 134         void *desc;                     /* pointer to ring memory  */
 135         dma_addr_t dma;                 /* phys address of ring    */
 136         unsigned int size;              /* length of ring in bytes */
 137         unsigned int count;             /* number of desc. in ring */
 138
 139         u16 next_to_use;
 140         u16 next_to_clean;
 141
 142         u16 head;
 143         u16 tail;
 144
 145         /* array of buffer information structs */
 146         struct e1000_buffer *buffer_info;
 147
 148         struct sk_buff *rx_skb_top;
 149
 150         struct e1000_queue_stats stats;
 151 };
 152
 153 /* PHY register snapshot values */
 154 struct e1000_phy_regs {
 155         u16 bmcr;               /* basic mode control register    */
 156         u16 bmsr;               /* basic mode status register     */
 157         u16 advertise;          /* auto-negotiation advertisement */
 158         u16 lpa;                /* link partner ability register  */
 159         u16 expansion;          /* auto-negotiation expansion reg */
 160         u16 ctrl1000;           /* 1000BASE-T control register    */
 161         u16 stat1000;           /* 1000BASE-T status register     */
 162         u16 estatus;            /* extended status register       */
 163 };
 164
 165 /* board specific private data structure */
 166 struct e1000_adapter {
 167         struct timer_list watchdog_timer;
 168         struct timer_list phy_info_timer;
 169         struct timer_list blink_timer;
 170
 171         struct work_struct reset_task;
 172         struct work_struct watchdog_task;
 173
 174         const struct e1000_info *ei;
 175
 176         struct vlan_group *vlgrp;
 177         u32 bd_number;
 178         u32 rx_buffer_len;
 179         u16 mng_vlan_id;
 180         u16 link_speed;
 181         u16 link_duplex;
 182
 183         spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
 184
 185         /* track device up/down/testing state */
 186         unsigned long state;
 187
 188         /* Interrupt Throttle Rate */
 189         u32 itr;
 190         u32 itr_setting;
 191         u16 tx_itr;
 192         u16 rx_itr;
 193
 194         /*
 195          * Tx
 196          */
 197         struct e1000_ring *tx_ring /* One per active queue */
 198                                                 ____cacheline_aligned_in_smp;
 199
 200         struct napi_struct napi;
 201
 202         unsigned long tx_queue_len;
 203         unsigned int restart_queue;
 204         u32 txd_cmd;
 205
 206         bool detect_tx_hung;
 207         u8 tx_timeout_factor;
 208
 209         u32 tx_int_delay;
 210         u32 tx_abs_int_delay;
 211
 212         unsigned int total_tx_bytes;
 213         unsigned int total_tx_packets;
 214         unsigned int total_rx_bytes;
 215         unsigned int total_rx_packets;
 216
 217         /* Tx stats */
 218         u64 tpt_old;
 219         u64 colc_old;
 220         u32 gotc;
 221         u64 gotc_old;
 222         u32 tx_timeout_count;
 223         u32 tx_fifo_head;
 224         u32 tx_head_addr;
 225         u32 tx_fifo_size;
 226         u32 tx_dma_failed;
 227
 228         /*
 229          * Rx
 230          */
 231         bool (*clean_rx) (struct e1000_adapter *adapter,
 232                           int *work_done, int work_to_do)
 233                                                 ____cacheline_aligned_in_smp;
 234         void (*alloc_rx_buf) (struct e1000_adapter *adapter,
 235                               int cleaned_count);
 236         struct e1000_ring *rx_ring;
 237
 238         u32 rx_int_delay;
 239         u32 rx_abs_int_delay;
 240
 241         /* Rx stats */
 242         u64 hw_csum_err;
 243         u64 hw_csum_good;
 244         u64 rx_hdr_split;
 245         u32 gorc;
 246         u64 gorc_old;
 247         u32 alloc_rx_buff_failed;
 248         u32 rx_dma_failed;
 249
 250         unsigned int rx_ps_pages;
 251         u16 rx_ps_bsize0;
 252         u32 max_frame_size;
 253         u32 min_frame_size;
 254
 255         /* OS defined structs */
 256         struct net_device *netdev;
 257         struct pci_dev *pdev;
 258         struct net_device_stats net_stats;
 259         spinlock_t stats_lock;      /* prevent concurrent stats updates */
 260
 261         /* structs defined in e1000_hw.h */
 262         struct e1000_hw hw;
 263
 264         struct e1000_hw_stats stats;
 265         struct e1000_phy_info phy_info;
 266         struct e1000_phy_stats phy_stats;
 267
 268         /* Snapshot of PHY registers */
 269         struct e1000_phy_regs phy_regs;
 270
 271         struct e1000_ring test_tx_ring;
 272         struct e1000_ring test_rx_ring;
 273         u32 test_icr;
 274
 275         u32 msg_enable;
 276
 277         u32 eeprom_wol;
 278         u32 wol;
 279         u32 pba;
 280
 281         bool fc_autoneg;
 282
 283         unsigned long led_status;
 284
 285         unsigned int flags;
 286 };
 287
 288 struct e1000_info {
 289         enum e1000_mac_type     mac;
 290         unsigned int            flags;
 291         u32                     pba;
 292         s32                     (*get_variants)(struct e1000_adapter *);
 293         struct e1000_mac_operations *mac_ops;
 294         struct e1000_phy_operations *phy_ops;
 295         struct e1000_nvm_operations *nvm_ops;
 296 };
 297
 298 /* hardware capability, feature, and workaround flags */
 299 #define FLAG_HAS_AMT                      (1 << 0)
 300 #define FLAG_HAS_FLASH                    (1 << 1)
 301 #define FLAG_HAS_HW_VLAN_FILTER           (1 << 2)
 302 #define FLAG_HAS_WOL                      (1 << 3)
 303 #define FLAG_HAS_ERT                      (1 << 4)
 304 #define FLAG_HAS_CTRLEXT_ON_LOAD          (1 << 5)
 305 #define FLAG_HAS_SWSM_ON_LOAD             (1 << 6)
 306 #define FLAG_HAS_JUMBO_FRAMES             (1 << 7)
 307 #define FLAG_HAS_SMART_POWER_DOWN         (1 << 11)
 308 #define FLAG_IS_QUAD_PORT_A               (1 << 12)
 309 #define FLAG_IS_QUAD_PORT                 (1 << 13)
 310 #define FLAG_TIPG_MEDIUM_FOR_80003ESLAN   (1 << 14)
 311 #define FLAG_APME_IN_WUC                  (1 << 15)
 312 #define FLAG_APME_IN_CTRL3                (1 << 16)
 313 #define FLAG_APME_CHECK_PORT_B            (1 << 17)
 314 #define FLAG_DISABLE_FC_PAUSE_TIME        (1 << 18)
 315 #define FLAG_NO_WAKE_UCAST                (1 << 19)
 316 #define FLAG_MNG_PT_ENABLED               (1 << 20)
 317 #define FLAG_RESET_OVERWRITES_LAA         (1 << 21)
 318 #define FLAG_TARC_SPEED_MODE_BIT          (1 << 22)
 319 #define FLAG_TARC_SET_BIT_ZERO            (1 << 23)
 320 #define FLAG_RX_NEEDS_RESTART             (1 << 24)
 321 #define FLAG_LSC_GIG_SPEED_DROP           (1 << 25)
 322 #define FLAG_SMART_POWER_DOWN             (1 << 26)
 323 #define FLAG_MSI_ENABLED                  (1 << 27)
 324 #define FLAG_RX_CSUM_ENABLED              (1 << 28)
 325 #define FLAG_TSO_FORCE                    (1 << 29)
 326 #define FLAG_RX_RESTART_NOW               (1 << 30)
 327
 328 #define E1000_RX_DESC_PS(R, i)      \
 329         (&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
 330 #define E1000_GET_DESC(R, i, type)      (&(((struct type *)((R).desc))[i]))
 331 #define E1000_RX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_rx_desc)
 332 #define E1000_TX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_tx_desc)
 333 #define E1000_CONTEXT_DESC(R, i)        E1000_GET_DESC(R, i, e1000_context_desc)
 334
 335 enum e1000_state_t {
 336         __E1000_TESTING,
 337         __E1000_RESETTING,
 338         __E1000_DOWN
 339 };
 340
 341 enum latency_range {
 342         lowest_latency = 0,
 343         low_latency = 1,
 344         bulk_latency = 2,
 345         latency_invalid = 255
 346 };
 347
 348 extern char e1000e_driver_name[];
 349 extern const char e1000e_driver_version[];
 350
 351 extern void e1000e_check_options(struct e1000_adapter *adapter);
 352 extern void e1000e_set_ethtool_ops(struct net_device *netdev);
 353
 354 extern int e1000e_up(struct e1000_adapter *adapter);
 355 extern void e1000e_down(struct e1000_adapter *adapter);
 356 extern void e1000e_reinit_locked(struct e1000_adapter *adapter);
 357 extern void e1000e_reset(struct e1000_adapter *adapter);
 358 extern void e1000e_power_up_phy(struct e1000_adapter *adapter);
 359 extern int e1000e_setup_rx_resources(struct e1000_adapter *adapter);
 360 extern int e1000e_setup_tx_resources(struct e1000_adapter *adapter);
 361 extern void e1000e_free_rx_resources(struct e1000_adapter *adapter);
 362 extern void e1000e_free_tx_resources(struct e1000_adapter *adapter);
 363 extern void e1000e_update_stats(struct e1000_adapter *adapter);
 364
 365 extern unsigned int copybreak;
 366
 367 extern char *e1000e_get_hw_dev_name(struct e1000_hw *hw);
 368
 369 extern struct e1000_info e1000_82571_info;
 370 extern struct e1000_info e1000_82572_info;
 371 extern struct e1000_info e1000_82573_info;
 372 extern struct e1000_info e1000_ich8_info;
 373 extern struct e1000_info e1000_ich9_info;
 374 extern struct e1000_info e1000_es2_info;
 375
 376 extern s32 e1000e_read_pba_num(struct e1000_hw *hw, u32 *pba_num);
 377
 378 extern s32  e1000e_commit_phy(struct e1000_hw *hw);
 379
 380 extern bool e1000e_enable_mng_pass_thru(struct e1000_hw *hw);
 381
 382 extern bool e1000e_get_laa_state_82571(struct e1000_hw *hw);
 383 extern void e1000e_set_laa_state_82571(struct e1000_hw *hw, bool state);
 384
 385 extern void e1000e_set_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw,
 386                                                  bool state);
 387 extern void e1000e_igp3_phy_powerdown_workaround_ich8lan(struct e1000_hw *hw);
 388 extern void e1000e_gig_downshift_workaround_ich8lan(struct e1000_hw *hw);
 389
 390 extern s32 e1000e_check_for_copper_link(struct e1000_hw *hw);
 391 extern s32 e1000e_check_for_fiber_link(struct e1000_hw *hw);
 392 extern s32 e1000e_check_for_serdes_link(struct e1000_hw *hw);
 393 extern s32 e1000e_cleanup_led_generic(struct e1000_hw *hw);
 394 extern s32 e1000e_led_on_generic(struct e1000_hw *hw);
 395 extern s32 e1000e_led_off_generic(struct e1000_hw *hw);
 396 extern s32 e1000e_get_bus_info_pcie(struct e1000_hw *hw);
 397 extern s32 e1000e_get_speed_and_duplex_copper(struct e1000_hw *hw, u16 *speed, u16 *duplex);
 398 extern s32 e1000e_get_speed_and_duplex_fiber_serdes(struct e1000_hw *hw, u16 *speed, u16 *duplex);
 399 extern s32 e1000e_disable_pcie_master(struct e1000_hw *hw);
 400 extern s32 e1000e_get_auto_rd_done(struct e1000_hw *hw);
 401 extern s32 e1000e_id_led_init(struct e1000_hw *hw);
 402 extern void e1000e_clear_hw_cntrs_base(struct e1000_hw *hw);
 403 extern s32 e1000e_setup_fiber_serdes_link(struct e1000_hw *hw);
 404 extern s32 e1000e_copper_link_setup_m88(struct e1000_hw *hw);
 405 extern s32 e1000e_copper_link_setup_igp(struct e1000_hw *hw);
 406 extern s32 e1000e_setup_link(struct e1000_hw *hw);
 407 extern void e1000e_clear_vfta(struct e1000_hw *hw);
 408 extern void e1000e_init_rx_addrs(struct e1000_hw *hw, u16 rar_count);
 409 extern void e1000e_update_mc_addr_list_generic(struct e1000_hw *hw,
 410                                                u8 *mc_addr_list,
 411                                                u32 mc_addr_count,
 412                                                u32 rar_used_count,
 413                                                u32 rar_count);
 414 extern void e1000e_rar_set(struct e1000_hw *hw, u8 *addr, u32 index);
 415 extern s32 e1000e_set_fc_watermarks(struct e1000_hw *hw);
 416 extern void e1000e_set_pcie_no_snoop(struct e1000_hw *hw, u32 no_snoop);
 417 extern s32 e1000e_get_hw_semaphore(struct e1000_hw *hw);
 418 extern s32 e1000e_valid_led_default(struct e1000_hw *hw, u16 *data);
 419 extern void e1000e_config_collision_dist(struct e1000_hw *hw);
 420 extern s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw);
 421 extern s32 e1000e_force_mac_fc(struct e1000_hw *hw);
 422 extern s32 e1000e_blink_led(struct e1000_hw *hw);
 423 extern void e1000e_write_vfta(struct e1000_hw *hw, u32 offset, u32 value);
 424 extern void e1000e_reset_adaptive(struct e1000_hw *hw);
 425 extern void e1000e_update_adaptive(struct e1000_hw *hw);
 426
 427 extern s32 e1000e_setup_copper_link(struct e1000_hw *hw);
 428 extern s32 e1000e_get_phy_id(struct e1000_hw *hw);
 429 extern void e1000e_put_hw_semaphore(struct e1000_hw *hw);
 430 extern s32 e1000e_check_reset_block_generic(struct e1000_hw *hw);
 431 extern s32 e1000e_phy_force_speed_duplex_igp(struct e1000_hw *hw);
 432 extern s32 e1000e_get_cable_length_igp_2(struct e1000_hw *hw);
 433 extern s32 e1000e_get_phy_info_igp(struct e1000_hw *hw);
 434 extern s32 e1000e_read_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 *data);
 435 extern s32 e1000e_phy_hw_reset_generic(struct e1000_hw *hw);
 436 extern s32 e1000e_set_d3_lplu_state(struct e1000_hw *hw, bool active);
 437 extern s32 e1000e_write_phy_reg_igp(struct e1000_hw *hw, u32 offset, u16 data);
 438 extern s32 e1000e_phy_sw_reset(struct e1000_hw *hw);
 439 extern s32 e1000e_phy_force_speed_duplex_m88(struct e1000_hw *hw);
 440 extern s32 e1000e_get_cfg_done(struct e1000_hw *hw);
 441 extern s32 e1000e_get_cable_length_m88(struct e1000_hw *hw);
 442 extern s32 e1000e_get_phy_info_m88(struct e1000_hw *hw);
 443 extern s32 e1000e_read_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 *data);
 444 extern s32 e1000e_write_phy_reg_m88(struct e1000_hw *hw, u32 offset, u16 data);
 445 extern enum e1000_phy_type e1000e_get_phy_type_from_id(u32 phy_id);
 446 extern void e1000e_phy_force_speed_duplex_setup(struct e1000_hw *hw, u16 *phy_ctrl);
 447 extern s32 e1000e_write_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 data);
 448 extern s32 e1000e_read_kmrn_reg(struct e1000_hw *hw, u32 offset, u16 *data);
 449 extern s32 e1000e_phy_has_link_generic(struct e1000_hw *hw, u32 iterations,
 450                                u32 usec_interval, bool *success);
 451 extern s32 e1000e_phy_reset_dsp(struct e1000_hw *hw);
 452 extern s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data);
 453 extern s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data);
 454 extern s32 e1000e_check_downshift(struct e1000_hw *hw);
 455
 456 static inline s32 e1000_phy_hw_reset(struct e1000_hw *hw)
 457 {
 458         return hw->phy.ops.reset_phy(hw);
 459 }
 460
 461 static inline s32 e1000_check_reset_block(struct e1000_hw *hw)
 462 {
 463         return hw->phy.ops.check_reset_block(hw);
 464 }
 465
 466 static inline s32 e1e_rphy(struct e1000_hw *hw, u32 offset, u16 *data)
 467 {
 468         return hw->phy.ops.read_phy_reg(hw, offset, data);
 469 }
 470
 471 static inline s32 e1e_wphy(struct e1000_hw *hw, u32 offset, u16 data)
 472 {
 473         return hw->phy.ops.write_phy_reg(hw, offset, data);
 474 }
 475
 476 static inline s32 e1000_get_cable_length(struct e1000_hw *hw)
 477 {
 478         return hw->phy.ops.get_cable_length(hw);
 479 }
 480
 481 extern s32 e1000e_acquire_nvm(struct e1000_hw *hw);
 482 extern s32 e1000e_write_nvm_spi(struct e1000_hw *hw, u16 offset, u16 words, u16 *data);
 483 extern s32 e1000e_update_nvm_checksum_generic(struct e1000_hw *hw);
 484 extern s32 e1000e_poll_eerd_eewr_done(struct e1000_hw *hw, int ee_reg);
 485 extern s32 e1000e_read_nvm_eerd(struct e1000_hw *hw, u16 offset, u16 words, u16 *data);
 486 extern s32 e1000e_validate_nvm_checksum_generic(struct e1000_hw *hw);
 487 extern void e1000e_release_nvm(struct e1000_hw *hw);
 488 extern void e1000e_reload_nvm(struct e1000_hw *hw);
 489 extern s32 e1000e_read_mac_addr(struct e1000_hw *hw);
 490
 491 static inline s32 e1000_validate_nvm_checksum(struct e1000_hw *hw)
 492 {
 493         return hw->nvm.ops.validate_nvm(hw);
 494 }
 495
 496 static inline s32 e1000e_update_nvm_checksum(struct e1000_hw *hw)
 497 {
 498         return hw->nvm.ops.update_nvm(hw);
 499 }
 500
 501 static inline s32 e1000_read_nvm(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
 502 {
 503         return hw->nvm.ops.read_nvm(hw, offset, words, data);
 504 }
 505
 506 static inline s32 e1000_write_nvm(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
 507 {
 508         return hw->nvm.ops.write_nvm(hw, offset, words, data);
 509 }
 510
 511 static inline s32 e1000_get_phy_info(struct e1000_hw *hw)
 512 {
 513         return hw->phy.ops.get_phy_info(hw);
 514 }
 515
 516 extern bool e1000e_check_mng_mode(struct e1000_hw *hw);
 517 extern bool e1000e_enable_tx_pkt_filtering(struct e1000_hw *hw);
 518 extern s32 e1000e_mng_write_dhcp_info(struct e1000_hw *hw, u8 *buffer, u16 length);
 519
 520 static inline u32 __er32(struct e1000_hw *hw, unsigned long reg)
 521 {
 522         return readl(hw->hw_addr + reg);
 523 }
 524
 525 static inline void __ew32(struct e1000_hw *hw, unsigned long reg, u32 val)
 526 {
 527         writel(val, hw->hw_addr + reg);
 528 }
 529
 530 #endif /* _E1000_H_ */