release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/net/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/init.h>
  40 #include <linux/mm.h>
  41 #include <linux/errno.h>
  42 #include <linux/ioport.h>
  43 #include <linux/pci.h>
  44 #include <linux/kernel.h>
  45 #include <linux/netdevice.h>
  46 #include <linux/etherdevice.h>
  47 #include <linux/skbuff.h>
  48 #include <linux/delay.h>
  49 #include <linux/timer.h>
  50 #include <linux/slab.h>
  51 #include <linux/vmalloc.h>
  52 #include <linux/interrupt.h>
  53 #include <linux/string.h>
  54 #include <linux/pagemap.h>
  55 #include <linux/dma-mapping.h>
  56 #include <linux/bitops.h>
  57 #include <asm/io.h>
  58 #include <asm/irq.h>
  59 #include <linux/capability.h>
  60 #include <linux/in.h>
  61 #include <linux/ip.h>
  62 #include <linux/ipv6.h>
  63 #include <linux/tcp.h>
  64 #include <linux/udp.h>
  65 #include <net/pkt_sched.h>
  66 #include <linux/list.h>
  67 #include <linux/reboot.h>
  68 #include <net/checksum.h>
  69 #include <linux/mii.h>
  70 #include <linux/ethtool.h>
  71 #include <linux/if_vlan.h>
  72
  73 #define BAR_0           0
  74 #define BAR_1           1
  75 #define BAR_5           5
  76
  77 #define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
  78         PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
  79
  80 struct e1000_adapter;
  81
  82 #include "e1000_hw.h"
  83
  84 #define E1000_MAX_INTR 10
  85
  86 /* TX/RX descriptor defines */
  87 #define E1000_DEFAULT_TXD                  256
  88 #define E1000_MAX_TXD                      256
  89 #define E1000_MIN_TXD                       48
  90 #define E1000_MAX_82544_TXD               4096
  91
  92 #define E1000_DEFAULT_RXD                  256
  93 #define E1000_MAX_RXD                      256
  94 #define E1000_MIN_RXD                       48
  95 #define E1000_MAX_82544_RXD               4096
  96
  97 #define E1000_MIN_ITR_USECS             10 /* 100000 irq/sec */
  98 #define E1000_MAX_ITR_USECS             10000 /* 100    irq/sec */
  99
 100 /* this is the size past which hardware will drop packets when setting LPE=0 */
 101 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
 102
 103 /* Supported Rx Buffer Sizes */
 104 #define E1000_RXBUFFER_128   128    /* Used for packet split */
 105 #define E1000_RXBUFFER_256   256    /* Used for packet split */
 106 #define E1000_RXBUFFER_512   512
 107 #define E1000_RXBUFFER_1024  1024
 108 #define E1000_RXBUFFER_2048  2048
 109 #define E1000_RXBUFFER_4096  4096
 110 #define E1000_RXBUFFER_8192  8192
 111 #define E1000_RXBUFFER_16384 16384
 112
 113 /* SmartSpeed delimiters */
 114 #define E1000_SMARTSPEED_DOWNSHIFT 3
 115 #define E1000_SMARTSPEED_MAX       15
 116
 117 /* Packet Buffer allocations */
 118 #define E1000_PBA_BYTES_SHIFT 0xA
 119 #define E1000_TX_HEAD_ADDR_SHIFT 7
 120 #define E1000_PBA_TX_MASK 0xFFFF0000
 121
 122 /* Flow Control Watermarks */
 123 #define E1000_FC_HIGH_DIFF 0x1638  /* High: 5688 bytes below Rx FIFO size */
 124 #define E1000_FC_LOW_DIFF 0x1640   /* Low:  5696 bytes below Rx FIFO size */
 125
 126 #define E1000_FC_PAUSE_TIME 0xFFFF /* pause for the max or until send xon */
 127
 128 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
 129 #define E1000_TX_QUEUE_WAKE     16
 130 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 131 #define E1000_RX_BUFFER_WRITE   16      /* Must be power of 2 */
 132
 133 #define AUTO_ALL_MODES            0
 134 #define E1000_EEPROM_82544_APM    0x0004
 135 #define E1000_EEPROM_APME         0x0400
 136
 137 #ifndef E1000_MASTER_SLAVE
 138 /* Switch to override PHY master/slave setting */
 139 #define E1000_MASTER_SLAVE      e1000_ms_hw_default
 140 #endif
 141
 142 #define E1000_MNG_VLAN_NONE (-1)
 143
 144 /* wrapper around a pointer to a socket buffer,
 145  * so a DMA handle can be stored along with the buffer */
 146 struct e1000_buffer {
 147         struct sk_buff *skb;
 148         dma_addr_t dma;
 149         struct page *page;
 150         unsigned long time_stamp;
 151         u16 length;
 152         u16 next_to_watch;
 153         u16 mapped_as_page;
 154 };
 155
 156 struct e1000_tx_ring {
 157         /* pointer to the descriptor ring memory */
 158         void *desc;
 159         /* physical address of the descriptor ring */
 160         dma_addr_t dma;
 161         /* length of descriptor ring in bytes */
 162         unsigned int size;
 163         /* number of descriptors in the ring */
 164         unsigned int count;
 165         /* next descriptor to associate a buffer with */
 166         unsigned int next_to_use;
 167         /* next descriptor to check for DD status bit */
 168         unsigned int next_to_clean;
 169         /* array of buffer information structs */
 170         struct e1000_buffer *buffer_info;
 171
 172         u16 tdh;
 173         u16 tdt;
 174         bool last_tx_tso;
 175 };
 176
 177 struct e1000_rx_ring {
 178         /* pointer to the descriptor ring memory */
 179         void *desc;
 180         /* physical address of the descriptor ring */
 181         dma_addr_t dma;
 182         /* length of descriptor ring in bytes */
 183         unsigned int size;
 184         /* number of descriptors in the ring */
 185         unsigned int count;
 186         /* next descriptor to associate a buffer with */
 187         unsigned int next_to_use;
 188         /* next descriptor to check for DD status bit */
 189         unsigned int next_to_clean;
 190         /* array of buffer information structs */
 191         struct e1000_buffer *buffer_info;
 192         struct sk_buff *rx_skb_top;
 193
 194         /* cpu for rx queue */
 195         int cpu;
 196
 197         u16 rdh;
 198         u16 rdt;
 199 };
 200
 201 #define E1000_DESC_UNUSED(R)                                            \
 202         ((((R)->next_to_clean > (R)->next_to_use)                       \
 203           ? 0 : (R)->count) + (R)->next_to_clean - (R)->next_to_use - 1)
 204
 205 #define E1000_RX_DESC_EXT(R, i)                                         \
 206         (&(((union e1000_rx_desc_extended *)((R).desc))[i]))
 207 #define E1000_GET_DESC(R, i, type)      (&(((struct type *)((R).desc))[i]))
 208 #define E1000_RX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_rx_desc)
 209 #define E1000_TX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_tx_desc)
 210 #define E1000_CONTEXT_DESC(R, i)        E1000_GET_DESC(R, i, e1000_context_desc)
 211
 212 /* board specific private data structure */
 213
 214 struct e1000_adapter {
 215         struct timer_list tx_fifo_stall_timer;
 216         struct timer_list watchdog_timer;
 217         struct timer_list phy_info_timer;
 218         struct vlan_group *vlgrp;
 219         u16 mng_vlan_id;
 220         u32 bd_number;
 221         u32 rx_buffer_len;
 222         u32 wol;
 223         u32 smartspeed;
 224         u32 en_mng_pt;
 225         u16 link_speed;
 226         u16 link_duplex;
 227         spinlock_t stats_lock;
 228         unsigned int total_tx_bytes;
 229         unsigned int total_tx_packets;
 230         unsigned int total_rx_bytes;
 231         unsigned int total_rx_packets;
 232         /* Interrupt Throttle Rate */
 233         u32 itr;
 234         u32 itr_setting;
 235         u16 tx_itr;
 236         u16 rx_itr;
 237
 238         struct work_struct reset_task;
 239         u8 fc_autoneg;
 240
 241         struct timer_list blink_timer;
 242         unsigned long led_status;
 243
 244         /* TX */
 245         struct e1000_tx_ring *tx_ring;      /* One per active queue */
 246         unsigned int restart_queue;
 247         u32 txd_cmd;
 248         u32 tx_int_delay;
 249         u32 tx_abs_int_delay;
 250         u32 gotcl;
 251         u64 gotcl_old;
 252         u64 tpt_old;
 253         u64 colc_old;
 254         u32 tx_timeout_count;
 255         u32 tx_fifo_head;
 256         u32 tx_head_addr;
 257         u32 tx_fifo_size;
 258         u8  tx_timeout_factor;
 259         atomic_t tx_fifo_stall;
 260         bool pcix_82544;
 261         bool detect_tx_hung;
 262
 263         /* RX */
 264         bool (*clean_rx)(struct e1000_adapter *adapter,
 265                          struct e1000_rx_ring *rx_ring,
 266                          int *work_done, int work_to_do);
 267         void (*alloc_rx_buf)(struct e1000_adapter *adapter,
 268                              struct e1000_rx_ring *rx_ring,
 269                              int cleaned_count);
 270         struct e1000_rx_ring *rx_ring;      /* One per active queue */
 271         struct napi_struct napi;
 272
 273         int num_tx_queues;
 274         int num_rx_queues;
 275
 276         u64 hw_csum_err;
 277         u64 hw_csum_good;
 278         u32 alloc_rx_buff_failed;
 279         u32 rx_int_delay;
 280         u32 rx_abs_int_delay;
 281         bool rx_csum;
 282         u32 gorcl;
 283         u64 gorcl_old;
 284
 285         /* OS defined structs */
 286         struct net_device *netdev;
 287         struct pci_dev *pdev;
 288
 289         /* structs defined in e1000_hw.h */
 290         struct e1000_hw hw;
 291         struct e1000_hw_stats stats;
 292         struct e1000_phy_info phy_info;
 293         struct e1000_phy_stats phy_stats;
 294
 295         u32 test_icr;
 296         struct e1000_tx_ring test_tx_ring;
 297         struct e1000_rx_ring test_rx_ring;
 298
 299         int msg_enable;
 300
 301         /* to not mess up cache alignment, always add to the bottom */
 302         bool tso_force;
 303         bool smart_power_down;  /* phy smart power down */
 304         bool quad_port_a;
 305         unsigned long flags;
 306         u32 eeprom_wol;
 307
 308         /* for ioport free */
 309         int bars;
 310         int need_ioport;
 311
 312         bool discarding;
 313 };
 314
 315 enum e1000_state_t {
 316         __E1000_TESTING,
 317         __E1000_RESETTING,
 318         __E1000_DOWN
 319 };
 320
 321 #undef pr_fmt
 322 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 323
 324 extern struct net_device *e1000_get_hw_dev(struct e1000_hw *hw);
 325 #define e_dbg(format, arg...) \
 326         netdev_dbg(e1000_get_hw_dev(hw), format, ## arg)
 327 #define e_err(msglvl, format, arg...) \
 328         netif_err(adapter, msglvl, adapter->netdev, format, ## arg)
 329 #define e_info(msglvl, format, arg...) \
 330         netif_info(adapter, msglvl, adapter->netdev, format, ## arg)
 331 #define e_warn(msglvl, format, arg...) \
 332         netif_warn(adapter, msglvl, adapter->netdev, format, ## arg)
 333 #define e_notice(msglvl, format, arg...) \
 334         netif_notice(adapter, msglvl, adapter->netdev, format, ## arg)
 335 #define e_dev_info(format, arg...) \
 336         dev_info(&adapter->pdev->dev, format, ## arg)
 337 #define e_dev_warn(format, arg...) \
 338         dev_warn(&adapter->pdev->dev, format, ## arg)
 339 #define e_dev_err(format, arg...) \
 340         dev_err(&adapter->pdev->dev, format, ## arg)
 341
 342 extern char e1000_driver_name[];
 343 extern const char e1000_driver_version[];
 344
 345 extern int e1000_up(struct e1000_adapter *adapter);
 346 extern void e1000_down(struct e1000_adapter *adapter);
 347 extern void e1000_reinit_locked(struct e1000_adapter *adapter);
 348 extern void e1000_reset(struct e1000_adapter *adapter);
 349 extern int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
 350 extern int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
 351 extern int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
 352 extern void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
 353 extern void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
 354 extern void e1000_update_stats(struct e1000_adapter *adapter);
 355 extern bool e1000_has_link(struct e1000_adapter *adapter);
 356 extern void e1000_power_up_phy(struct e1000_adapter *);
 357 extern void e1000_set_ethtool_ops(struct net_device *netdev);
 358 extern void e1000_check_options(struct e1000_adapter *adapter);
 359 extern char *e1000_get_hw_dev_name(struct e1000_hw *hw);
 360
 361 #endif /* _E1000_H_ */