drivers/net/ixgb/ixgb.h

   1 /*******************************************************************************
   2
   3
   4   Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU General Public License as published by the Free
   8   Software Foundation; either version 2 of the License, or (at your option)
   9   any later version.
  10
  11   This program is distributed in the hope that it will be useful, but WITHOUT
  12   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  14   more details.
  15
  16   You should have received a copy of the GNU General Public License along with
  17   this program; if not, write to the Free Software Foundation, Inc., 59
  18   Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20   The full GNU General Public License is included in this distribution in the
  21   file called LICENSE.
  22
  23   Contact Information:
  24   Linux NICS <linux.nics@intel.com>
  25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26
  27 *******************************************************************************/
  28
  29 #ifndef _IXGB_H_
  30 #define _IXGB_H_
  31
  32 #include <linux/stddef.h>
  33 #include <linux/config.h>
  34 #include <linux/module.h>
  35 #include <linux/types.h>
  36 #include <asm/byteorder.h>
  37 #include <linux/init.h>
  38 #include <linux/mm.h>
  39 #include <linux/errno.h>
  40 #include <linux/ioport.h>
  41 #include <linux/pci.h>
  42 #include <linux/kernel.h>
  43 #include <linux/netdevice.h>
  44 #include <linux/etherdevice.h>
  45 #include <linux/skbuff.h>
  46 #include <linux/delay.h>
  47 #include <linux/timer.h>
  48 #include <linux/slab.h>
  49 #include <linux/vmalloc.h>
  50 #include <linux/interrupt.h>
  51 #include <linux/string.h>
  52 #include <linux/pagemap.h>
  53 #include <linux/dma-mapping.h>
  54 #include <linux/bitops.h>
  55 #include <asm/io.h>
  56 #include <asm/irq.h>
  57 #include <linux/capability.h>
  58 #include <linux/in.h>
  59 #include <linux/ip.h>
  60 #include <linux/tcp.h>
  61 #include <linux/udp.h>
  62 #include <net/pkt_sched.h>
  63 #include <linux/list.h>
  64 #include <linux/reboot.h>
  65 #ifdef NETIF_F_TSO
  66 #include <net/checksum.h>
  67 #endif
  68
  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 struct ixgb_adapter;
  77 #include "ixgb_hw.h"
  78 #include "ixgb_ee.h"
  79 #include "ixgb_ids.h"
  80
  81 #ifdef _DEBUG_DRIVER_
  82 #define IXGB_DBG(args...) printk(KERN_DEBUG "ixgb: " args)
  83 #else
  84 #define IXGB_DBG(args...)
  85 #endif
  86
  87 #define IXGB_ERR(args...) printk(KERN_ERR "ixgb: " args)
  88
  89 /* TX/RX descriptor defines */
  90 #define DEFAULT_TXD      256
  91 #define MAX_TXD         4096
  92 #define MIN_TXD   64
  93
  94 /* hardware cannot reliably support more than 512 descriptors owned by
  95  * hardware descrioptor cache otherwise an unreliable ring under heavy
  96  * recieve load may result */
  97 /* #define DEFAULT_RXD     1024 */
  98 /* #define MAX_RXD         4096 */
  99 #define DEFAULT_RXD     512
 100 #define MAX_RXD 512
 101 #define MIN_RXD  64
 102
 103 /* Supported Rx Buffer Sizes */
 104 #define IXGB_RXBUFFER_2048  2048
 105 #define IXGB_RXBUFFER_4096  4096
 106 #define IXGB_RXBUFFER_8192  8192
 107 #define IXGB_RXBUFFER_16384 16384
 108
 109 /* How many Tx Descriptors do we need to call netif_wake_queue? */
 110 #define IXGB_TX_QUEUE_WAKE 16
 111
 112 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 113 #define IXGB_RX_BUFFER_WRITE    16      /* Must be power of 2 */
 114
 115 /* only works for sizes that are powers of 2 */
 116 #define IXGB_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1)))
 117
 118 /* wrapper around a pointer to a socket buffer,
 119  * so a DMA handle can be stored along with the buffer */
 120 struct ixgb_buffer {
 121         struct sk_buff *skb;
 122         uint64_t dma;
 123         unsigned long time_stamp;
 124         uint16_t length;
 125         uint16_t next_to_watch;
 126 };
 127
 128 struct ixgb_desc_ring {
 129         /* pointer to the descriptor ring memory */
 130         void *desc;
 131         /* physical address of the descriptor ring */
 132         dma_addr_t dma;
 133         /* length of descriptor ring in bytes */
 134         unsigned int size;
 135         /* number of descriptors in the ring */
 136         unsigned int count;
 137         /* next descriptor to associate a buffer with */
 138         unsigned int next_to_use;
 139         /* next descriptor to check for DD status bit */
 140         unsigned int next_to_clean;
 141         /* array of buffer information structs */
 142         struct ixgb_buffer *buffer_info;
 143 };
 144
 145 #define IXGB_DESC_UNUSED(R) \
 146         ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
 147         (R)->next_to_clean - (R)->next_to_use - 1)
 148
 149 #define IXGB_GET_DESC(R, i, type)       (&(((struct type *)((R).desc))[i]))
 150 #define IXGB_RX_DESC(R, i)              IXGB_GET_DESC(R, i, ixgb_rx_desc)
 151 #define IXGB_TX_DESC(R, i)              IXGB_GET_DESC(R, i, ixgb_tx_desc)
 152 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc)
 153
 154 /* board specific private data structure */
 155
 156 struct ixgb_adapter {
 157         struct timer_list watchdog_timer;
 158         struct vlan_group *vlgrp;
 159         uint32_t bd_number;
 160         uint32_t rx_buffer_len;
 161         uint32_t part_num;
 162         uint16_t link_speed;
 163         uint16_t link_duplex;
 164         spinlock_t tx_lock;
 165         atomic_t irq_sem;
 166         struct work_struct tx_timeout_task;
 167
 168         struct timer_list blink_timer;
 169         unsigned long led_status;
 170
 171         /* TX */
 172         struct ixgb_desc_ring tx_ring;
 173         unsigned long timeo_start;
 174         uint32_t tx_cmd_type;
 175         uint64_t hw_csum_tx_good;
 176         uint64_t hw_csum_tx_error;
 177         uint32_t tx_int_delay;
 178         boolean_t tx_int_delay_enable;
 179         boolean_t detect_tx_hung;
 180
 181         /* RX */
 182         struct ixgb_desc_ring rx_ring;
 183         uint64_t hw_csum_rx_error;
 184         uint64_t hw_csum_rx_good;
 185         uint32_t rx_int_delay;
 186         boolean_t rx_csum;
 187
 188         /* OS defined structs */
 189         struct net_device *netdev;
 190         struct pci_dev *pdev;
 191         struct net_device_stats net_stats;
 192
 193         /* structs defined in ixgb_hw.h */
 194         struct ixgb_hw hw;
 195         struct ixgb_hw_stats stats;
 196 #ifdef CONFIG_PCI_MSI
 197         boolean_t have_msi;
 198 #endif
 199 };
 200 #endif /* _IXGB_H_ */