LXR linux/drivers/net/ethernet/intel/e1000/e1000.h

   1/*******************************************************************************
   2
   3  Intel PRO/1000 Linux driver
   4  Copyright(c) 1999 - 2006 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
  30/* Linux PRO/1000 Ethernet Driver main header file */
  31
  32#ifndef _E1000_H_
  33#define _E1000_H_
  34
  35#include <linux/stddef.h>
  36#include <linux/module.h>
  37#include <linux/types.h>
  38#include <asm/byteorder.h>
  39#include <linux/mm.h>
  40#include <linux/errno.h>
  41#include <linux/ioport.h>
  42#include <linux/pci.h>
  43#include <linux/kernel.h>
  44#include <linux/netdevice.h>
  45#include <linux/etherdevice.h>
  46#include <linux/skbuff.h>
  47#include <linux/delay.h>
  48#include <linux/timer.h>
  49#include <linux/slab.h>
  50#include <linux/vmalloc.h>
  51#include <linux/interrupt.h>
  52#include <linux/string.h>
  53#include <linux/pagemap.h>
  54#include <linux/dma-mapping.h>
  55#include <linux/bitops.h>
  56#include <asm/io.h>
  57#include <asm/irq.h>
  58#include <linux/capability.h>
  59#include <linux/in.h>
  60#include <linux/ip.h>
  61#include <linux/ipv6.h>
  62#include <linux/tcp.h>
  63#include <linux/udp.h>
  64#include <net/pkt_sched.h>
  65#include <linux/list.h>
  66#include <linux/reboot.h>
  67#include <net/checksum.h>
  68#include <linux/mii.h>
  69#include <linux/ethtool.h>
  70#include <linux/if_vlan.h>
  71
  72#define BAR_0           0
  73#define BAR_1           1
  74#define BAR_5           5
  75
  76#define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
  77        PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
  78
  79struct e1000_adapter;
  80
  81#include "e1000_hw.h"
  82
  83#define E1000_MAX_INTR                  10
  84
  85/*
  86 * Count for polling __E1000_RESET condition every 10-20msec.
  87 */
  88#define E1000_CHECK_RESET_COUNT 50
  89
  90/* TX/RX descriptor defines */
  91#define E1000_DEFAULT_TXD               256
  92#define E1000_MAX_TXD                   256
  93#define E1000_MIN_TXD                   48
  94#define E1000_MAX_82544_TXD             4096
  95
  96#define E1000_DEFAULT_RXD               256
  97#define E1000_MAX_RXD                   256
  98#define E1000_MIN_RXD                   48
  99#define E1000_MAX_82544_RXD             4096
 100
 101#define E1000_MIN_ITR_USECS             10 /* 100000 irq/sec */
 102#define E1000_MAX_ITR_USECS             10000 /* 100    irq/sec */
 103
 104/* this is the size past which hardware will drop packets when setting LPE=0 */
 105#define MAXIMUM_ETHERNET_VLAN_SIZE      1522
 106
 107/* Supported Rx Buffer Sizes */
 108#define E1000_RXBUFFER_128              128    /* Used for packet split */
 109#define E1000_RXBUFFER_256              256    /* Used for packet split */
 110#define E1000_RXBUFFER_512              512
 111#define E1000_RXBUFFER_1024             1024
 112#define E1000_RXBUFFER_2048             2048
 113#define E1000_RXBUFFER_4096             4096
 114#define E1000_RXBUFFER_8192             8192
 115#define E1000_RXBUFFER_16384            16384
 116
 117/* SmartSpeed delimiters */
 118#define E1000_SMARTSPEED_DOWNSHIFT      3
 119#define E1000_SMARTSPEED_MAX            15
 120
 121/* Packet Buffer allocations */
 122#define E1000_PBA_BYTES_SHIFT           0xA
 123#define E1000_TX_HEAD_ADDR_SHIFT        7
 124#define E1000_PBA_TX_MASK               0xFFFF0000
 125
 126/* Flow Control Watermarks */
 127#define E1000_FC_HIGH_DIFF      0x1638 /* High: 5688 bytes below Rx FIFO size */
 128#define E1000_FC_LOW_DIFF       0x1640 /* Low:  5696 bytes below Rx FIFO size */
 129
 130#define E1000_FC_PAUSE_TIME     0xFFFF /* pause for the max or until send xon */
 131
 132/* How many Tx Descriptors do we need to call netif_wake_queue ? */
 133#define E1000_TX_QUEUE_WAKE     16
 134/* How many Rx Buffers do we bundle into one write to the hardware ? */
 135#define E1000_RX_BUFFER_WRITE   16 /* Must be power of 2 */
 136
 137#define AUTO_ALL_MODES          0
 138#define E1000_EEPROM_82544_APM  0x0004
 139#define E1000_EEPROM_APME       0x0400
 140
 141#ifndef E1000_MASTER_SLAVE
 142/* Switch to override PHY master/slave setting */
 143#define E1000_MASTER_SLAVE      e1000_ms_hw_default
 144#endif
 145
 146#define E1000_MNG_VLAN_NONE     (-1)
 147
 148/* wrapper around a pointer to a socket buffer,
 149 * so a DMA handle can be stored along with the buffer
 150 */
 151struct e1000_tx_buffer {
 152        struct sk_buff *skb;
 153        dma_addr_t dma;
 154        unsigned long time_stamp;
 155        u16 length;
 156        u16 next_to_watch;
 157        bool mapped_as_page;
 158        unsigned short segs;
 159        unsigned int bytecount;
 160};
 161
 162struct e1000_rx_buffer {
 163        union {
 164                struct page *page; /* jumbo: alloc_page */
 165                u8 *data; /* else, netdev_alloc_frag */
 166        } rxbuf;
 167        dma_addr_t dma;
 168};
 169
 170struct e1000_tx_ring {
 171        /* pointer to the descriptor ring memory */
 172        void *desc;
 173        /* physical address of the descriptor ring */
 174        dma_addr_t dma;
 175        /* length of descriptor ring in bytes */
 176        unsigned int size;
 177        /* number of descriptors in the ring */
 178        unsigned int count;
 179        /* next descriptor to associate a buffer with */
 180        unsigned int next_to_use;
 181        /* next descriptor to check for DD status bit */
 182        unsigned int next_to_clean;
 183        /* array of buffer information structs */
 184        struct e1000_tx_buffer *buffer_info;
 185
 186        u16 tdh;
 187        u16 tdt;
 188        bool last_tx_tso;
 189};
 190
 191struct e1000_rx_ring {
 192        /* pointer to the descriptor ring memory */
 193        void *desc;
 194        /* physical address of the descriptor ring */
 195        dma_addr_t dma;
 196        /* length of descriptor ring in bytes */
 197        unsigned int size;
 198        /* number of descriptors in the ring */
 199        unsigned int count;
 200        /* next descriptor to associate a buffer with */
 201        unsigned int next_to_use;
 202        /* next descriptor to check for DD status bit */
 203        unsigned int next_to_clean;
 204        /* array of buffer information structs */
 205        struct e1000_rx_buffer *buffer_info;
 206        struct sk_buff *rx_skb_top;
 207
 208        /* cpu for rx queue */
 209        int cpu;
 210
 211        u16 rdh;
 212        u16 rdt;
 213};
 214
 215#define E1000_DESC_UNUSED(R)                                            \
 216({                                                                      \
 217        unsigned int clean = smp_load_acquire(&(R)->next_to_clean);     \
 218        unsigned int use = READ_ONCE((R)->next_to_use);                 \
 219        (clean > use ? 0 : (R)->count) + clean - use - 1;               \
 220})
 221
 222#define E1000_RX_DESC_EXT(R, i)                                         \
 223        (&(((union e1000_rx_desc_extended *)((R).desc))[i]))
 224#define E1000_GET_DESC(R, i, type)      (&(((struct type *)((R).desc))[i]))
 225#define E1000_RX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_rx_desc)
 226#define E1000_TX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_tx_desc)
 227#define E1000_CONTEXT_DESC(R, i)        E1000_GET_DESC(R, i, e1000_context_desc)
 228
 229/* board specific private data structure */
 230
 231struct e1000_adapter {
 232        unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 233        u16 mng_vlan_id;
 234        u32 bd_number;
 235        u32 rx_buffer_len;
 236        u32 wol;
 237        u32 smartspeed;
 238        u32 en_mng_pt;
 239        u16 link_speed;
 240        u16 link_duplex;
 241        spinlock_t stats_lock;
 242        unsigned int total_tx_bytes;
 243        unsigned int total_tx_packets;
 244        unsigned int total_rx_bytes;
 245        unsigned int total_rx_packets;
 246        /* Interrupt Throttle Rate */
 247        u32 itr;
 248        u32 itr_setting;
 249        u16 tx_itr;
 250        u16 rx_itr;
 251
 252        u8 fc_autoneg;
 253
 254        /* TX */
 255        struct e1000_tx_ring *tx_ring;      /* One per active queue */
 256        unsigned int restart_queue;
 257        u32 txd_cmd;
 258        u32 tx_int_delay;
 259        u32 tx_abs_int_delay;
 260        u32 gotcl;
 261        u64 gotcl_old;
 262        u64 tpt_old;
 263        u64 colc_old;
 264        u32 tx_timeout_count;
 265        u32 tx_fifo_head;
 266        u32 tx_head_addr;
 267        u32 tx_fifo_size;
 268        u8  tx_timeout_factor;
 269        atomic_t tx_fifo_stall;
 270        bool pcix_82544;
 271        bool detect_tx_hung;
 272        bool dump_buffers;
 273
 274        /* RX */
 275        bool (*clean_rx)(struct e1000_adapter *adapter,
 276                         struct e1000_rx_ring *rx_ring,
 277                         int *work_done, int work_to_do);
 278        void (*alloc_rx_buf)(struct e1000_adapter *adapter,
 279                             struct e1000_rx_ring *rx_ring,
 280                             int cleaned_count);
 281        struct e1000_rx_ring *rx_ring;      /* One per active queue */
 282        struct napi_struct napi;
 283
 284        int num_tx_queues;
 285        int num_rx_queues;
 286
 287        u64 hw_csum_err;
 288        u64 hw_csum_good;
 289        u32 alloc_rx_buff_failed;
 290        u32 rx_int_delay;
 291        u32 rx_abs_int_delay;
 292        bool rx_csum;
 293        u32 gorcl;
 294        u64 gorcl_old;
 295
 296        /* OS defined structs */
 297        struct net_device *netdev;
 298        struct pci_dev *pdev;
 299
 300        /* structs defined in e1000_hw.h */
 301        struct e1000_hw hw;
 302        struct e1000_hw_stats stats;
 303        struct e1000_phy_info phy_info;
 304        struct e1000_phy_stats phy_stats;
 305
 306        u32 test_icr;
 307        struct e1000_tx_ring test_tx_ring;
 308        struct e1000_rx_ring test_rx_ring;
 309
 310        int msg_enable;
 311
 312        /* to not mess up cache alignment, always add to the bottom */
 313        bool tso_force;
 314        bool smart_power_down;  /* phy smart power down */
 315        bool quad_port_a;
 316        unsigned long flags;
 317        u32 eeprom_wol;
 318
 319        /* for ioport free */
 320        int bars;
 321        int need_ioport;
 322
 323        bool discarding;
 324
 325        struct work_struct reset_task;
 326        struct delayed_work watchdog_task;
 327        struct delayed_work fifo_stall_task;
 328        struct delayed_work phy_info_task;
 329};
 330
 331enum e1000_state_t {
 332        __E1000_TESTING,
 333        __E1000_RESETTING,
 334        __E1000_DOWN,
 335        __E1000_DISABLED
 336};
 337
 338#undef pr_fmt
 339#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 340
 341extern struct net_device *e1000_get_hw_dev(struct e1000_hw *hw);
 342#define e_dbg(format, arg...) \
 343        netdev_dbg(e1000_get_hw_dev(hw), format, ## arg)
 344#define e_err(msglvl, format, arg...) \
 345        netif_err(adapter, msglvl, adapter->netdev, format, ## arg)
 346#define e_info(msglvl, format, arg...) \
 347        netif_info(adapter, msglvl, adapter->netdev, format, ## arg)
 348#define e_warn(msglvl, format, arg...) \
 349        netif_warn(adapter, msglvl, adapter->netdev, format, ## arg)
 350#define e_notice(msglvl, format, arg...) \
 351        netif_notice(adapter, msglvl, adapter->netdev, format, ## arg)
 352#define e_dev_info(format, arg...) \
 353        dev_info(&adapter->pdev->dev, format, ## arg)
 354#define e_dev_warn(format, arg...) \
 355        dev_warn(&adapter->pdev->dev, format, ## arg)
 356#define e_dev_err(format, arg...) \
 357        dev_err(&adapter->pdev->dev, format, ## arg)
 358
 359extern char e1000_driver_name[];
 360extern const char e1000_driver_version[];
 361
 362int e1000_open(struct net_device *netdev);
 363int e1000_close(struct net_device *netdev);
 364extern int e1000_up(struct e1000_adapter *adapter);
 365extern void e1000_down(struct e1000_adapter *adapter);
 366extern void e1000_reinit_locked(struct e1000_adapter *adapter);
 367extern void e1000_reset(struct e1000_adapter *adapter);
 368extern int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx);
 369extern int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
 370extern int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
 371extern void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
 372extern void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
 373extern void e1000_update_stats(struct e1000_adapter *adapter);
 374extern bool e1000_has_link(struct e1000_adapter *adapter);
 375extern void e1000_power_up_phy(struct e1000_adapter *);
 376extern void e1000_set_ethtool_ops(struct net_device *netdev);
 377extern void e1000_check_options(struct e1000_adapter *adapter);
 378extern char *e1000_get_hw_dev_name(struct e1000_hw *hw);
 379
 380#endif /* _E1000_H_ */
 381