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 #ifdef DBG
  85 #define E1000_DBG(args...) printk(KERN_DEBUG "e1000: " args)
  86 #else
  87 #define E1000_DBG(args...)
  88 #endif
  89
  90 #define E1000_ERR(args...) printk(KERN_ERR "e1000: " args)
  91
  92 #define PFX "e1000: "
  93
  94 #define DPRINTK(nlevel, klevel, fmt, args...)                           \
  95 do {                                                                    \
  96         if (NETIF_MSG_##nlevel & adapter->msg_enable)                   \
  97                 printk(KERN_##klevel PFX "%s: %s: " fmt,                \
  98                        adapter->netdev->name, __func__, ##args);        \
  99 } while (0)
 100
 101 #define E1000_MAX_INTR 10
 102
 103 /* TX/RX descriptor defines */
 104 #define E1000_DEFAULT_TXD                  256
 105 #define E1000_MAX_TXD                      256
 106 #define E1000_MIN_TXD                       80
 107 #define E1000_MAX_82544_TXD               4096
 108
 109 #define E1000_DEFAULT_RXD                  256
 110 #define E1000_MAX_RXD                      256
 111 #define E1000_MIN_RXD                       80
 112 #define E1000_MAX_82544_RXD               4096
 113
 114 #define E1000_MIN_ITR_USECS             10 /* 100000 irq/sec */
 115 #define E1000_MAX_ITR_USECS             10000 /* 100    irq/sec */
 116
 117 /* this is the size past which hardware will drop packets when setting LPE=0 */
 118 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
 119
 120 /* Supported Rx Buffer Sizes */
 121 #define E1000_RXBUFFER_128   128    /* Used for packet split */
 122 #define E1000_RXBUFFER_256   256    /* Used for packet split */
 123 #define E1000_RXBUFFER_512   512
 124 #define E1000_RXBUFFER_1024  1024
 125 #define E1000_RXBUFFER_2048  2048
 126 #define E1000_RXBUFFER_4096  4096
 127 #define E1000_RXBUFFER_8192  8192
 128 #define E1000_RXBUFFER_16384 16384
 129
 130 /* SmartSpeed delimiters */
 131 #define E1000_SMARTSPEED_DOWNSHIFT 3
 132 #define E1000_SMARTSPEED_MAX       15
 133
 134 /* Packet Buffer allocations */
 135 #define E1000_PBA_BYTES_SHIFT 0xA
 136 #define E1000_TX_HEAD_ADDR_SHIFT 7
 137 #define E1000_PBA_TX_MASK 0xFFFF0000
 138
 139 /* Flow Control Watermarks */
 140 #define E1000_FC_HIGH_DIFF 0x1638  /* High: 5688 bytes below Rx FIFO size */
 141 #define E1000_FC_LOW_DIFF 0x1640   /* Low:  5696 bytes below Rx FIFO size */
 142
 143 #define E1000_FC_PAUSE_TIME 0xFFFF /* pause for the max or until send xon */
 144
 145 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
 146 #define E1000_TX_QUEUE_WAKE     16
 147 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 148 #define E1000_RX_BUFFER_WRITE   16      /* Must be power of 2 */
 149
 150 #define AUTO_ALL_MODES            0
 151 #define E1000_EEPROM_82544_APM    0x0004
 152 #define E1000_EEPROM_APME         0x0400
 153
 154 #ifndef E1000_MASTER_SLAVE
 155 /* Switch to override PHY master/slave setting */
 156 #define E1000_MASTER_SLAVE      e1000_ms_hw_default
 157 #endif
 158
 159 #define E1000_MNG_VLAN_NONE (-1)
 160
 161 /* wrapper around a pointer to a socket buffer,
 162  * so a DMA handle can be stored along with the buffer */
 163 struct e1000_buffer {
 164         struct sk_buff *skb;
 165         dma_addr_t dma;
 166         struct page *page;
 167         unsigned long time_stamp;
 168         u16 length;
 169         u16 next_to_watch;
 170         u16 mapped_as_page;
 171 };
 172
 173 struct e1000_tx_ring {
 174         /* pointer to the descriptor ring memory */
 175         void *desc;
 176         /* physical address of the descriptor ring */
 177         dma_addr_t dma;
 178         /* length of descriptor ring in bytes */
 179         unsigned int size;
 180         /* number of descriptors in the ring */
 181         unsigned int count;
 182         /* next descriptor to associate a buffer with */
 183         unsigned int next_to_use;
 184         /* next descriptor to check for DD status bit */
 185         unsigned int next_to_clean;
 186         /* array of buffer information structs */
 187         struct e1000_buffer *buffer_info;
 188
 189         u16 tdh;
 190         u16 tdt;
 191         bool last_tx_tso;
 192 };
 193
 194 struct e1000_rx_ring {
 195         /* pointer to the descriptor ring memory */
 196         void *desc;
 197         /* physical address of the descriptor ring */
 198         dma_addr_t dma;
 199         /* length of descriptor ring in bytes */
 200         unsigned int size;
 201         /* number of descriptors in the ring */
 202         unsigned int count;
 203         /* next descriptor to associate a buffer with */
 204         unsigned int next_to_use;
 205         /* next descriptor to check for DD status bit */
 206         unsigned int next_to_clean;
 207         /* array of buffer information structs */
 208         struct e1000_buffer *buffer_info;
 209         struct sk_buff *rx_skb_top;
 210
 211         /* cpu for rx queue */
 212         int cpu;
 213
 214         u16 rdh;
 215         u16 rdt;
 216 };
 217
 218 #define E1000_DESC_UNUSED(R)                                            \
 219         ((((R)->next_to_clean > (R)->next_to_use)                       \
 220           ? 0 : (R)->count) + (R)->next_to_clean - (R)->next_to_use - 1)
 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
 231 struct e1000_adapter {
 232         struct timer_list tx_fifo_stall_timer;
 233         struct timer_list watchdog_timer;
 234         struct timer_list phy_info_timer;
 235         struct vlan_group *vlgrp;
 236         u16 mng_vlan_id;
 237         u32 bd_number;
 238         u32 rx_buffer_len;
 239         u32 wol;
 240         u32 smartspeed;
 241         u32 en_mng_pt;
 242         u16 link_speed;
 243         u16 link_duplex;
 244         spinlock_t stats_lock;
 245         unsigned int total_tx_bytes;
 246         unsigned int total_tx_packets;
 247         unsigned int total_rx_bytes;
 248         unsigned int total_rx_packets;
 249         /* Interrupt Throttle Rate */
 250         u32 itr;
 251         u32 itr_setting;
 252         u16 tx_itr;
 253         u16 rx_itr;
 254
 255         struct work_struct reset_task;
 256         u8 fc_autoneg;
 257
 258         struct timer_list blink_timer;
 259         unsigned long led_status;
 260
 261         /* TX */
 262         struct e1000_tx_ring *tx_ring;      /* One per active queue */
 263         unsigned int restart_queue;
 264         unsigned long tx_queue_len;
 265         u32 txd_cmd;
 266         u32 tx_int_delay;
 267         u32 tx_abs_int_delay;
 268         u32 gotcl;
 269         u64 gotcl_old;
 270         u64 tpt_old;
 271         u64 colc_old;
 272         u32 tx_timeout_count;
 273         u32 tx_fifo_head;
 274         u32 tx_head_addr;
 275         u32 tx_fifo_size;
 276         u8  tx_timeout_factor;
 277         atomic_t tx_fifo_stall;
 278         bool pcix_82544;
 279         bool detect_tx_hung;
 280
 281         /* RX */
 282         bool (*clean_rx)(struct e1000_adapter *adapter,
 283                          struct e1000_rx_ring *rx_ring,
 284                          int *work_done, int work_to_do);
 285         void (*alloc_rx_buf)(struct e1000_adapter *adapter,
 286                              struct e1000_rx_ring *rx_ring,
 287                              int cleaned_count);
 288         struct e1000_rx_ring *rx_ring;      /* One per active queue */
 289         struct napi_struct napi;
 290
 291         int num_tx_queues;
 292         int num_rx_queues;
 293
 294         u64 hw_csum_err;
 295         u64 hw_csum_good;
 296         u32 alloc_rx_buff_failed;
 297         u32 rx_int_delay;
 298         u32 rx_abs_int_delay;
 299         bool rx_csum;
 300         u32 gorcl;
 301         u64 gorcl_old;
 302
 303         /* OS defined structs */
 304         struct net_device *netdev;
 305         struct pci_dev *pdev;
 306
 307         /* structs defined in e1000_hw.h */
 308         struct e1000_hw hw;
 309         struct e1000_hw_stats stats;
 310         struct e1000_phy_info phy_info;
 311         struct e1000_phy_stats phy_stats;
 312
 313         u32 test_icr;
 314         struct e1000_tx_ring test_tx_ring;
 315         struct e1000_rx_ring test_rx_ring;
 316
 317         int msg_enable;
 318
 319         /* to not mess up cache alignment, always add to the bottom */
 320         bool tso_force;
 321         bool smart_power_down;  /* phy smart power down */
 322         bool quad_port_a;
 323         unsigned long flags;
 324         u32 eeprom_wol;
 325
 326         /* for ioport free */
 327         int bars;
 328         int need_ioport;
 329
 330         bool discarding;
 331 };
 332
 333 enum e1000_state_t {
 334         __E1000_TESTING,
 335         __E1000_RESETTING,
 336         __E1000_DOWN
 337 };
 338
 339 extern char e1000_driver_name[];
 340 extern const char e1000_driver_version[];
 341
 342 extern int e1000_up(struct e1000_adapter *adapter);
 343 extern void e1000_down(struct e1000_adapter *adapter);
 344 extern void e1000_reinit_locked(struct e1000_adapter *adapter);
 345 extern void e1000_reset(struct e1000_adapter *adapter);
 346 extern int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx);
 347 extern int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
 348 extern int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
 349 extern void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
 350 extern void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
 351 extern void e1000_update_stats(struct e1000_adapter *adapter);
 352 extern void e1000_power_up_phy(struct e1000_adapter *);
 353 extern void e1000_set_ethtool_ops(struct net_device *netdev);
 354 extern void e1000_check_options(struct e1000_adapter *adapter);
 355
 356 #endif /* _E1000_H_ */