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/tcp.h>
  63 #include <linux/udp.h>
  64 #include <net/pkt_sched.h>
  65 #include <linux/list.h>
  66 #include <linux/reboot.h>
  67 #ifdef NETIF_F_TSO
  68 #include <net/checksum.h>
  69 #endif
  70 #include <linux/mii.h>
  71 #include <linux/ethtool.h>
  72 #include <linux/if_vlan.h>
  73
  74 #define BAR_0           0
  75 #define BAR_1           1
  76 #define BAR_5           5
  77
  78 #define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
  79         PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
  80
  81 struct e1000_adapter;
  82
  83 #include "e1000_hw.h"
  84
  85 #ifdef DBG
  86 #define E1000_DBG(args...) printk(KERN_DEBUG "e1000: " args)
  87 #else
  88 #define E1000_DBG(args...)
  89 #endif
  90
  91 #define E1000_ERR(args...) printk(KERN_ERR "e1000: " args)
  92
  93 #define PFX "e1000: "
  94 #define DPRINTK(nlevel, klevel, fmt, args...) \
  95         (void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
  96         printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
  97                 __FUNCTION__ , ## args))
  98
  99 #define E1000_MAX_INTR 10
 100
 101 /* TX/RX descriptor defines */
 102 #define E1000_DEFAULT_TXD                  256
 103 #define E1000_MAX_TXD                      256
 104 #define E1000_MIN_TXD                       80
 105 #define E1000_MAX_82544_TXD               4096
 106
 107 #define E1000_DEFAULT_RXD                  256
 108 #define E1000_MAX_RXD                      256
 109 #define E1000_MIN_RXD                       80
 110 #define E1000_MAX_82544_RXD               4096
 111
 112 /* this is the size past which hardware will drop packets when setting LPE=0 */
 113 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
 114
 115 /* Supported Rx Buffer Sizes */
 116 #define E1000_RXBUFFER_128   128    /* Used for packet split */
 117 #define E1000_RXBUFFER_256   256    /* Used for packet split */
 118 #define E1000_RXBUFFER_512   512
 119 #define E1000_RXBUFFER_1024  1024
 120 #define E1000_RXBUFFER_2048  2048
 121 #define E1000_RXBUFFER_4096  4096
 122 #define E1000_RXBUFFER_8192  8192
 123 #define E1000_RXBUFFER_16384 16384
 124
 125 /* SmartSpeed delimiters */
 126 #define E1000_SMARTSPEED_DOWNSHIFT 3
 127 #define E1000_SMARTSPEED_MAX       15
 128
 129 /* Packet Buffer allocations */
 130 #define E1000_PBA_BYTES_SHIFT 0xA
 131 #define E1000_TX_HEAD_ADDR_SHIFT 7
 132 #define E1000_PBA_TX_MASK 0xFFFF0000
 133
 134 /* Flow Control Watermarks */
 135 #define E1000_FC_HIGH_DIFF 0x1638  /* High: 5688 bytes below Rx FIFO size */
 136 #define E1000_FC_LOW_DIFF 0x1640   /* Low:  5696 bytes below Rx FIFO size */
 137
 138 #define E1000_FC_PAUSE_TIME 0x0680 /* 858 usec */
 139
 140 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
 141 #define E1000_TX_QUEUE_WAKE     16
 142 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 143 #define E1000_RX_BUFFER_WRITE   16      /* Must be power of 2 */
 144
 145 #define AUTO_ALL_MODES            0
 146 #define E1000_EEPROM_82544_APM    0x0004
 147 #define E1000_EEPROM_ICH8_APME    0x0004
 148 #define E1000_EEPROM_APME         0x0400
 149
 150 #ifndef E1000_MASTER_SLAVE
 151 /* Switch to override PHY master/slave setting */
 152 #define E1000_MASTER_SLAVE      e1000_ms_hw_default
 153 #endif
 154
 155 #define E1000_MNG_VLAN_NONE -1
 156 /* Number of packet split data buffers (not including the header buffer) */
 157 #define PS_PAGE_BUFFERS MAX_PS_BUFFERS-1
 158
 159 /* only works for sizes that are powers of 2 */
 160 #define E1000_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1)))
 161
 162 /* wrapper around a pointer to a socket buffer,
 163  * so a DMA handle can be stored along with the buffer */
 164 struct e1000_buffer {
 165         struct sk_buff *skb;
 166         dma_addr_t dma;
 167         unsigned long time_stamp;
 168         uint16_t length;
 169         uint16_t next_to_watch;
 170 };
 171
 172
 173 struct e1000_ps_page { struct page *ps_page[PS_PAGE_BUFFERS]; };
 174 struct e1000_ps_page_dma { uint64_t ps_page_dma[PS_PAGE_BUFFERS]; };
 175
 176 struct e1000_tx_ring {
 177         /* pointer to the descriptor ring memory */
 178         void *desc;
 179         /* physical address of the descriptor ring */
 180         dma_addr_t dma;
 181         /* length of descriptor ring in bytes */
 182         unsigned int size;
 183         /* number of descriptors in the ring */
 184         unsigned int count;
 185         /* next descriptor to associate a buffer with */
 186         unsigned int next_to_use;
 187         /* next descriptor to check for DD status bit */
 188         unsigned int next_to_clean;
 189         /* array of buffer information structs */
 190         struct e1000_buffer *buffer_info;
 191
 192         spinlock_t tx_lock;
 193         uint16_t tdh;
 194         uint16_t tdt;
 195         boolean_t last_tx_tso;
 196 };
 197
 198 struct e1000_rx_ring {
 199         /* pointer to the descriptor ring memory */
 200         void *desc;
 201         /* physical address of the descriptor ring */
 202         dma_addr_t dma;
 203         /* length of descriptor ring in bytes */
 204         unsigned int size;
 205         /* number of descriptors in the ring */
 206         unsigned int count;
 207         /* next descriptor to associate a buffer with */
 208         unsigned int next_to_use;
 209         /* next descriptor to check for DD status bit */
 210         unsigned int next_to_clean;
 211         /* array of buffer information structs */
 212         struct e1000_buffer *buffer_info;
 213         /* arrays of page information for packet split */
 214         struct e1000_ps_page *ps_page;
 215         struct e1000_ps_page_dma *ps_page_dma;
 216
 217         /* cpu for rx queue */
 218         int cpu;
 219
 220         uint16_t rdh;
 221         uint16_t rdt;
 222 };
 223
 224 #define E1000_DESC_UNUSED(R) \
 225         ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
 226         (R)->next_to_clean - (R)->next_to_use - 1)
 227
 228 #define E1000_RX_DESC_PS(R, i)      \
 229         (&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
 230 #define E1000_RX_DESC_EXT(R, i)     \
 231         (&(((union e1000_rx_desc_extended *)((R).desc))[i]))
 232 #define E1000_GET_DESC(R, i, type)      (&(((struct type *)((R).desc))[i]))
 233 #define E1000_RX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_rx_desc)
 234 #define E1000_TX_DESC(R, i)             E1000_GET_DESC(R, i, e1000_tx_desc)
 235 #define E1000_CONTEXT_DESC(R, i)        E1000_GET_DESC(R, i, e1000_context_desc)
 236
 237 /* board specific private data structure */
 238
 239 struct e1000_adapter {
 240         struct timer_list tx_fifo_stall_timer;
 241         struct timer_list watchdog_timer;
 242         struct timer_list phy_info_timer;
 243         struct vlan_group *vlgrp;
 244         uint16_t mng_vlan_id;
 245         uint32_t bd_number;
 246         uint32_t rx_buffer_len;
 247         uint32_t wol;
 248         uint32_t smartspeed;
 249         uint32_t en_mng_pt;
 250         uint16_t link_speed;
 251         uint16_t link_duplex;
 252         spinlock_t stats_lock;
 253 #ifdef CONFIG_E1000_NAPI
 254         spinlock_t tx_queue_lock;
 255 #endif
 256         atomic_t irq_sem;
 257         struct work_struct reset_task;
 258         uint8_t fc_autoneg;
 259
 260         struct timer_list blink_timer;
 261         unsigned long led_status;
 262
 263         /* TX */
 264         struct e1000_tx_ring *tx_ring;      /* One per active queue */
 265         unsigned long tx_queue_len;
 266         uint32_t txd_cmd;
 267         uint32_t tx_int_delay;
 268         uint32_t tx_abs_int_delay;
 269         uint32_t gotcl;
 270         uint64_t gotcl_old;
 271         uint64_t tpt_old;
 272         uint64_t colc_old;
 273         uint32_t tx_timeout_count;
 274         uint32_t tx_fifo_head;
 275         uint32_t tx_head_addr;
 276         uint32_t tx_fifo_size;
 277         uint8_t  tx_timeout_factor;
 278         atomic_t tx_fifo_stall;
 279         boolean_t pcix_82544;
 280         boolean_t detect_tx_hung;
 281
 282         /* RX */
 283 #ifdef CONFIG_E1000_NAPI
 284         boolean_t (*clean_rx) (struct e1000_adapter *adapter,
 285                                struct e1000_rx_ring *rx_ring,
 286                                int *work_done, int work_to_do);
 287 #else
 288         boolean_t (*clean_rx) (struct e1000_adapter *adapter,
 289                                struct e1000_rx_ring *rx_ring);
 290 #endif
 291         void (*alloc_rx_buf) (struct e1000_adapter *adapter,
 292                               struct e1000_rx_ring *rx_ring,
 293                                 int cleaned_count);
 294         struct e1000_rx_ring *rx_ring;      /* One per active queue */
 295 #ifdef CONFIG_E1000_NAPI
 296         struct net_device *polling_netdev;  /* One per active queue */
 297 #endif
 298         int num_tx_queues;
 299         int num_rx_queues;
 300
 301         uint64_t hw_csum_err;
 302         uint64_t hw_csum_good;
 303         uint64_t rx_hdr_split;
 304         uint32_t alloc_rx_buff_failed;
 305         uint32_t rx_int_delay;
 306         uint32_t rx_abs_int_delay;
 307         boolean_t rx_csum;
 308         unsigned int rx_ps_pages;
 309         uint32_t gorcl;
 310         uint64_t gorcl_old;
 311         uint16_t rx_ps_bsize0;
 312
 313         /* Interrupt Throttle Rate */
 314         uint32_t itr;
 315
 316         /* OS defined structs */
 317         struct net_device *netdev;
 318         struct pci_dev *pdev;
 319         struct net_device_stats net_stats;
 320
 321         /* structs defined in e1000_hw.h */
 322         struct e1000_hw hw;
 323         struct e1000_hw_stats stats;
 324         struct e1000_phy_info phy_info;
 325         struct e1000_phy_stats phy_stats;
 326
 327         uint32_t test_icr;
 328         struct e1000_tx_ring test_tx_ring;
 329         struct e1000_rx_ring test_rx_ring;
 330
 331
 332         uint32_t *config_space;
 333         int msg_enable;
 334 #ifdef CONFIG_PCI_MSI
 335         boolean_t have_msi;
 336 #endif
 337         /* to not mess up cache alignment, always add to the bottom */
 338 #ifdef NETIF_F_TSO
 339         boolean_t tso_force;
 340 #endif
 341         boolean_t smart_power_down;     /* phy smart power down */
 342         boolean_t quad_port_a;
 343         unsigned long flags;
 344         uint32_t eeprom_wol;
 345 };
 346
 347 enum e1000_state_t {
 348         __E1000_DRIVER_TESTING,
 349         __E1000_RESETTING,
 350 };
 351
 352 /*  e1000_main.c  */
 353 extern char e1000_driver_name[];
 354 extern char e1000_driver_version[];
 355 int e1000_up(struct e1000_adapter *adapter);
 356 void e1000_down(struct e1000_adapter *adapter);
 357 void e1000_reset(struct e1000_adapter *adapter);
 358 void e1000_reinit_locked(struct e1000_adapter *adapter);
 359 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
 360 void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
 361 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
 362 void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
 363 void e1000_update_stats(struct e1000_adapter *adapter);
 364 int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
 365
 366 /*  e1000_ethtool.c  */
 367 void e1000_set_ethtool_ops(struct net_device *netdev);
 368
 369 /*  e1000_param.c  */
 370 void e1000_check_options(struct e1000_adapter *adapter);
 371
 372
 373 #endif /* _E1000_H_ */