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 73struct 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...) \ 84do { \ 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 */ 113struct 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 122struct 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 150struct ixgb_adapter { 151 struct timer_list watchdog_timer; 152 struct vlan_group *vlgrp; 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 struct timer_list blink_timer; 161 unsigned long led_status; 162 163 /* TX */ 164 struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp; 165 unsigned int restart_queue; 166 unsigned long timeo_start; 167 u32 tx_cmd_type; 168 u64 hw_csum_tx_good; 169 u64 hw_csum_tx_error; 170 u32 tx_int_delay; 171 u32 tx_timeout_count; 172 bool tx_int_delay_enable; 173 bool detect_tx_hung; 174 175 /* RX */ 176 struct ixgb_desc_ring rx_ring; 177 u64 hw_csum_rx_error; 178 u64 hw_csum_rx_good; 179 u32 rx_int_delay; 180 bool rx_csum; 181 182 /* OS defined structs */ 183 struct napi_struct napi; 184 struct net_device *netdev; 185 struct pci_dev *pdev; 186 187 /* structs defined in ixgb_hw.h */ 188 struct ixgb_hw hw; 189 u16 msg_enable; 190 struct ixgb_hw_stats stats; 191 u32 alloc_rx_buff_failed; 192 bool have_msi; 193 unsigned long flags; 194}; 195 196enum ixgb_state_t { 197 /* TBD 198 __IXGB_TESTING, 199 __IXGB_RESETTING, 200 */ 201 __IXGB_DOWN 202}; 203 204/* Exported from other modules */ 205extern void ixgb_check_options(struct ixgb_adapter *adapter); 206extern void ixgb_set_ethtool_ops(struct net_device *netdev); 207extern char ixgb_driver_name[]; 208extern const char ixgb_driver_version[]; 209 210extern int ixgb_up(struct ixgb_adapter *adapter); 211extern void ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog); 212extern void ixgb_reset(struct ixgb_adapter *adapter); 213extern int ixgb_setup_rx_resources(struct ixgb_adapter *adapter); 214extern int ixgb_setup_tx_resources(struct ixgb_adapter *adapter); 215extern void ixgb_free_rx_resources(struct ixgb_adapter *adapter); 216extern void ixgb_free_tx_resources(struct ixgb_adapter *adapter); 217extern void ixgb_update_stats(struct ixgb_adapter *adapter); 218 219 220#endif /* _IXGB_H_ */ 221