drivers/net/ethernet/intel/ixgb/ixgb.h

   1 /*******************************************************************************
   2
   3   Intel PRO/10GbE Linux driver
   4   Copyright(c) 1999 - 2008 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 #include <net/checksum.h>
  65
  66 #include <linux/ethtool.h>
  67 #include <linux/if_vlan.h>
  68
  69 #define BAR_0           0
  70 #define BAR_1           1
  71 #define BAR_5           5
  72
  73 struct ixgb_adapter;
  74 #include "ixgb_hw.h"
  75 #include "ixgb_ee.h"
  76 #include "ixgb_ids.h"
  77
  78 #define PFX "ixgb: "
  79
  80 #ifdef _DEBUG_DRIVER_
  81 #define IXGB_DBG(fmt, args...) printk(KERN_DEBUG PFX fmt, ##args)
  82 #else
  83 #define IXGB_DBG(fmt, args...)                          \
  84 do {                                                    \
  85         if (0)                                          \
  86                 printk(KERN_DEBUG PFX fmt, ##args);     \
  87 } while (0)
  88 #endif
  89
  90 /* TX/RX descriptor defines */
  91 #define DEFAULT_TXD      256
  92 #define MAX_TXD         4096
  93 #define MIN_TXD           64
  94
  95 /* hardware cannot reliably support more than 512 descriptors owned by
  96  * hardware descriptor cache otherwise an unreliable ring under heavy
  97  * receive load may result */
  98 #define DEFAULT_RXD      512
  99 #define MAX_RXD          512
 100 #define MIN_RXD           64
 101
 102 /* Supported Rx Buffer Sizes */
 103 #define IXGB_RXBUFFER_2048  2048
 104 #define IXGB_RXBUFFER_4096  4096
 105 #define IXGB_RXBUFFER_8192  8192
 106 #define IXGB_RXBUFFER_16384 16384
 107
 108 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 109 #define IXGB_RX_BUFFER_WRITE    8       /* Must be power of 2 */
 110
 111 /* wrapper around a pointer to a socket buffer,
 112  * so a DMA handle can be stored along with the buffer */
 113 struct ixgb_buffer {
 114         struct sk_buff *skb;
 115         dma_addr_t dma;
 116         unsigned long time_stamp;
 117         u16 length;
 118         u16 next_to_watch;
 119         u16 mapped_as_page;
 120 };
 121
 122 struct ixgb_desc_ring {
 123         /* pointer to the descriptor ring memory */
 124         void *desc;
 125         /* physical address of the descriptor ring */
 126         dma_addr_t dma;
 127         /* length of descriptor ring in bytes */
 128         unsigned int size;
 129         /* number of descriptors in the ring */
 130         unsigned int count;
 131         /* next descriptor to associate a buffer with */
 132         unsigned int next_to_use;
 133         /* next descriptor to check for DD status bit */
 134         unsigned int next_to_clean;
 135         /* array of buffer information structs */
 136         struct ixgb_buffer *buffer_info;
 137 };
 138
 139 #define IXGB_DESC_UNUSED(R) \
 140         ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
 141         (R)->next_to_clean - (R)->next_to_use - 1)
 142
 143 #define IXGB_GET_DESC(R, i, type)       (&(((struct type *)((R).desc))[i]))
 144 #define IXGB_RX_DESC(R, i)              IXGB_GET_DESC(R, i, ixgb_rx_desc)
 145 #define IXGB_TX_DESC(R, i)              IXGB_GET_DESC(R, i, ixgb_tx_desc)
 146 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc)
 147
 148 /* board specific private data structure */
 149
 150 struct ixgb_adapter {
 151         struct timer_list watchdog_timer;
 152         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 153         u32 bd_number;
 154         u32 rx_buffer_len;
 155         u32 part_num;
 156         u16 link_speed;
 157         u16 link_duplex;
 158         struct work_struct tx_timeout_task;
 159
 160         /* TX */
 161         struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp;
 162         unsigned int restart_queue;
 163         unsigned long timeo_start;
 164         u32 tx_cmd_type;
 165         u64 hw_csum_tx_good;
 166         u64 hw_csum_tx_error;
 167         u32 tx_int_delay;
 168         u32 tx_timeout_count;
 169         bool tx_int_delay_enable;
 170         bool detect_tx_hung;
 171
 172         /* RX */
 173         struct ixgb_desc_ring rx_ring;
 174         u64 hw_csum_rx_error;
 175         u64 hw_csum_rx_good;
 176         u32 rx_int_delay;
 177         bool rx_csum;
 178
 179         /* OS defined structs */
 180         struct napi_struct napi;
 181         struct net_device *netdev;
 182         struct pci_dev *pdev;
 183
 184         /* structs defined in ixgb_hw.h */
 185         struct ixgb_hw hw;
 186         u16 msg_enable;
 187         struct ixgb_hw_stats stats;
 188         u32 alloc_rx_buff_failed;
 189         bool have_msi;
 190         unsigned long flags;
 191 };
 192
 193 enum ixgb_state_t {
 194         /* TBD
 195         __IXGB_TESTING,
 196         __IXGB_RESETTING,
 197         */
 198         __IXGB_DOWN
 199 };
 200
 201 /* Exported from other modules */
 202 extern void ixgb_check_options(struct ixgb_adapter *adapter);
 203 extern void ixgb_set_ethtool_ops(struct net_device *netdev);
 204 extern char ixgb_driver_name[];
 205 extern const char ixgb_driver_version[];
 206
 207 extern int ixgb_up(struct ixgb_adapter *adapter);
 208 extern void ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog);
 209 extern void ixgb_reset(struct ixgb_adapter *adapter);
 210 extern int ixgb_setup_rx_resources(struct ixgb_adapter *adapter);
 211 extern int ixgb_setup_tx_resources(struct ixgb_adapter *adapter);
 212 extern void ixgb_free_rx_resources(struct ixgb_adapter *adapter);
 213 extern void ixgb_free_tx_resources(struct ixgb_adapter *adapter);
 214 extern void ixgb_update_stats(struct ixgb_adapter *adapter);
 215
 216
 217 #endif /* _IXGB_H_ */