drivers/net/ixgb/ixgb.h

   1 /*******************************************************************************
   2
   3   Intel PRO/10GbE 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 #ifndef _IXGB_H_
  30 #define _IXGB_H_
  31
  32 #include <linux/stddef.h>
  33 #include <linux/module.h>
  34 #include <linux/types.h>
  35 #include <asm/byteorder.h>
  36 #include <linux/init.h>
  37 #include <linux/mm.h>
  38 #include <linux/errno.h>
  39 #include <linux/ioport.h>
  40 #include <linux/pci.h>
  41 #include <linux/kernel.h>
  42 #include <linux/netdevice.h>
  43 #include <linux/etherdevice.h>
  44 #include <linux/skbuff.h>
  45 #include <linux/delay.h>
  46 #include <linux/timer.h>
  47 #include <linux/slab.h>
  48 #include <linux/vmalloc.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/string.h>
  51 #include <linux/pagemap.h>
  52 #include <linux/dma-mapping.h>
  53 #include <linux/bitops.h>
  54 #include <asm/io.h>
  55 #include <asm/irq.h>
  56 #include <linux/capability.h>
  57 #include <linux/in.h>
  58 #include <linux/ip.h>
  59 #include <linux/tcp.h>
  60 #include <linux/udp.h>
  61 #include <net/pkt_sched.h>
  62 #include <linux/list.h>
  63 #include <linux/reboot.h>
  64 #ifdef NETIF_F_TSO
  65 #include <net/checksum.h>
  66 #endif
  67
  68 #include <linux/ethtool.h>
  69 #include <linux/if_vlan.h>
  70
  71 #define BAR_0           0
  72 #define BAR_1           1
  73 #define BAR_5           5
  74
  75 struct ixgb_adapter;
  76 #include "ixgb_hw.h"
  77 #include "ixgb_ee.h"
  78 #include "ixgb_ids.h"
  79
  80 #ifdef _DEBUG_DRIVER_
  81 #define IXGB_DBG(args...) printk(KERN_DEBUG "ixgb: " args)
  82 #else
  83 #define IXGB_DBG(args...)
  84 #endif
  85
  86 #define PFX "ixgb: "
  87 #define DPRINTK(nlevel, klevel, fmt, args...) \
  88         (void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
  89         printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
  90                 __FUNCTION__ , ## args))
  91
  92
  93 /* TX/RX descriptor defines */
  94 #define DEFAULT_TXD      256
  95 #define MAX_TXD         4096
  96 #define MIN_TXD   64
  97
  98 /* hardware cannot reliably support more than 512 descriptors owned by
  99  * hardware descrioptor cache otherwise an unreliable ring under heavy
 100  * recieve load may result */
 101 /* #define DEFAULT_RXD     1024 */
 102 /* #define MAX_RXD         4096 */
 103 #define DEFAULT_RXD     512
 104 #define MAX_RXD 512
 105 #define MIN_RXD  64
 106
 107 /* Supported Rx Buffer Sizes */
 108 #define IXGB_RXBUFFER_2048  2048
 109 #define IXGB_RXBUFFER_4096  4096
 110 #define IXGB_RXBUFFER_8192  8192
 111 #define IXGB_RXBUFFER_16384 16384
 112
 113 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 114 #define IXGB_RX_BUFFER_WRITE    8       /* Must be power of 2 */
 115
 116 /* only works for sizes that are powers of 2 */
 117 #define IXGB_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1)))
 118
 119 /* wrapper around a pointer to a socket buffer,
 120  * so a DMA handle can be stored along with the buffer */
 121 struct ixgb_buffer {
 122         struct sk_buff *skb;
 123         dma_addr_t dma;
 124         unsigned long time_stamp;
 125         uint16_t length;
 126         uint16_t next_to_watch;
 127 };
 128
 129 struct ixgb_desc_ring {
 130         /* pointer to the descriptor ring memory */
 131         void *desc;
 132         /* physical address of the descriptor ring */
 133         dma_addr_t dma;
 134         /* length of descriptor ring in bytes */
 135         unsigned int size;
 136         /* number of descriptors in the ring */
 137         unsigned int count;
 138         /* next descriptor to associate a buffer with */
 139         unsigned int next_to_use;
 140         /* next descriptor to check for DD status bit */
 141         unsigned int next_to_clean;
 142         /* array of buffer information structs */
 143         struct ixgb_buffer *buffer_info;
 144 };
 145
 146 #define IXGB_DESC_UNUSED(R) \
 147         ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
 148         (R)->next_to_clean - (R)->next_to_use - 1)
 149
 150 #define IXGB_GET_DESC(R, i, type)       (&(((struct type *)((R).desc))[i]))
 151 #define IXGB_RX_DESC(R, i)              IXGB_GET_DESC(R, i, ixgb_rx_desc)
 152 #define IXGB_TX_DESC(R, i)              IXGB_GET_DESC(R, i, ixgb_tx_desc)
 153 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc)
 154
 155 /* board specific private data structure */
 156
 157 struct ixgb_adapter {
 158         struct timer_list watchdog_timer;
 159         struct vlan_group *vlgrp;
 160         uint32_t bd_number;
 161         uint32_t rx_buffer_len;
 162         uint32_t part_num;
 163         uint16_t link_speed;
 164         uint16_t link_duplex;
 165         spinlock_t tx_lock;
 166         atomic_t irq_sem;
 167         struct work_struct tx_timeout_task;
 168
 169         struct timer_list blink_timer;
 170         unsigned long led_status;
 171
 172         /* TX */
 173         struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp;
 174         unsigned int restart_queue;
 175         unsigned long timeo_start;
 176         uint32_t tx_cmd_type;
 177         uint64_t hw_csum_tx_good;
 178         uint64_t hw_csum_tx_error;
 179         uint32_t tx_int_delay;
 180         uint32_t tx_timeout_count;
 181         boolean_t tx_int_delay_enable;
 182         boolean_t detect_tx_hung;
 183
 184         /* RX */
 185         struct ixgb_desc_ring rx_ring;
 186         uint64_t hw_csum_rx_error;
 187         uint64_t hw_csum_rx_good;
 188         uint32_t rx_int_delay;
 189         boolean_t rx_csum;
 190
 191         /* OS defined structs */
 192         struct net_device *netdev;
 193         struct pci_dev *pdev;
 194         struct net_device_stats net_stats;
 195
 196         /* structs defined in ixgb_hw.h */
 197         struct ixgb_hw hw;
 198         u16 msg_enable;
 199         struct ixgb_hw_stats stats;
 200         uint32_t alloc_rx_buff_failed;
 201 #ifdef CONFIG_PCI_MSI
 202         boolean_t have_msi;
 203 #endif
 204 };
 205 #endif /* _IXGB_H_ */