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/mm.h> 37 #include <linux/errno.h> 38 #include <linux/ioport.h> 39 #include <linux/pci.h> 40 #include <linux/kernel.h> 41 #include <linux/netdevice.h> 42 #include <linux/etherdevice.h> 43 #include <linux/skbuff.h> 44 #include <linux/delay.h> 45 #include <linux/timer.h> 46 #include <linux/slab.h> 47 #include <linux/vmalloc.h> 48 #include <linux/interrupt.h> 49 #include <linux/string.h> 50 #include <linux/pagemap.h> 51 #include <linux/dma-mapping.h> 52 #include <linux/bitops.h> 53 #include <asm/io.h> 54 #include <asm/irq.h> 55 #include <linux/capability.h> 56 #include <linux/in.h> 57 #include <linux/ip.h> 58 #include <linux/tcp.h> 59 #include <linux/udp.h> 60 #include <net/pkt_sched.h> 61 #include <linux/list.h> 62 #include <linux/reboot.h> 63 #include <net/checksum.h> 64 65 #include <linux/ethtool.h> 66 #include <linux/if_vlan.h> 67 68 #define BAR_0 0 69 #define BAR_1 1 70 #define BAR_5 5 71 72 struct ixgb_adapter; 73 #include "ixgb_hw.h" 74 #include "ixgb_ee.h" 75 #include "ixgb_ids.h" 76 77 /* TX/RX descriptor defines */ 78 #define DEFAULT_TXD 256 79 #define MAX_TXD 4096 80 #define MIN_TXD 64 81 82 /* hardware cannot reliably support more than 512 descriptors owned by 83 * hardware descriptor cache otherwise an unreliable ring under heavy 84 * receive load may result */ 85 #define DEFAULT_RXD 512 86 #define MAX_RXD 512 87 #define MIN_RXD 64 88 89 /* Supported Rx Buffer Sizes */ 90 #define IXGB_RXBUFFER_2048 2048 91 #define IXGB_RXBUFFER_4096 4096 92 #define IXGB_RXBUFFER_8192 8192 93 #define IXGB_RXBUFFER_16384 16384 94 95 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 96 #define IXGB_RX_BUFFER_WRITE 8 /* Must be power of 2 */ 97 98 /* wrapper around a pointer to a socket buffer, 99 * so a DMA handle can be stored along with the buffer */ 100 struct ixgb_buffer { 101 struct sk_buff *skb; 102 dma_addr_t dma; 103 unsigned long time_stamp; 104 u16 length; 105 u16 next_to_watch; 106 u16 mapped_as_page; 107 }; 108 109 struct ixgb_desc_ring { 110 /* pointer to the descriptor ring memory */ 111 void *desc; 112 /* physical address of the descriptor ring */ 113 dma_addr_t dma; 114 /* length of descriptor ring in bytes */ 115 unsigned int size; 116 /* number of descriptors in the ring */ 117 unsigned int count; 118 /* next descriptor to associate a buffer with */ 119 unsigned int next_to_use; 120 /* next descriptor to check for DD status bit */ 121 unsigned int next_to_clean; 122 /* array of buffer information structs */ 123 struct ixgb_buffer *buffer_info; 124 }; 125 126 #define IXGB_DESC_UNUSED(R) \ 127 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ 128 (R)->next_to_clean - (R)->next_to_use - 1) 129 130 #define IXGB_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i])) 131 #define IXGB_RX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_rx_desc) 132 #define IXGB_TX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_tx_desc) 133 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc) 134 135 /* board specific private data structure */ 136 137 struct ixgb_adapter { 138 struct timer_list watchdog_timer; 139 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 140 u32 bd_number; 141 u32 rx_buffer_len; 142 u32 part_num; 143 u16 link_speed; 144 u16 link_duplex; 145 struct work_struct tx_timeout_task; 146 147 /* TX */ 148 struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp; 149 unsigned int restart_queue; 150 unsigned long timeo_start; 151 u32 tx_cmd_type; 152 u64 hw_csum_tx_good; 153 u64 hw_csum_tx_error; 154 u32 tx_int_delay; 155 u32 tx_timeout_count; 156 bool tx_int_delay_enable; 157 bool detect_tx_hung; 158 159 /* RX */ 160 struct ixgb_desc_ring rx_ring; 161 u64 hw_csum_rx_error; 162 u64 hw_csum_rx_good; 163 u32 rx_int_delay; 164 bool rx_csum; 165 166 /* OS defined structs */ 167 struct napi_struct napi; 168 struct net_device *netdev; 169 struct pci_dev *pdev; 170 171 /* structs defined in ixgb_hw.h */ 172 struct ixgb_hw hw; 173 u16 msg_enable; 174 struct ixgb_hw_stats stats; 175 u32 alloc_rx_buff_failed; 176 bool have_msi; 177 unsigned long flags; 178 }; 179 180 enum ixgb_state_t { 181 /* TBD 182 __IXGB_TESTING, 183 __IXGB_RESETTING, 184 */ 185 __IXGB_DOWN 186 }; 187 188 /* Exported from other modules */ 189 void ixgb_check_options(struct ixgb_adapter *adapter); 190 void ixgb_set_ethtool_ops(struct net_device *netdev); 191 extern char ixgb_driver_name[]; 192 extern const char ixgb_driver_version[]; 193 194 void ixgb_set_speed_duplex(struct net_device *netdev); 195 196 int ixgb_up(struct ixgb_adapter *adapter); 197 void ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog); 198 void ixgb_reset(struct ixgb_adapter *adapter); 199 int ixgb_setup_rx_resources(struct ixgb_adapter *adapter); 200 int ixgb_setup_tx_resources(struct ixgb_adapter *adapter); 201 void ixgb_free_rx_resources(struct ixgb_adapter *adapter); 202 void ixgb_free_tx_resources(struct ixgb_adapter *adapter); 203 void ixgb_update_stats(struct ixgb_adapter *adapter); 204 205 206 #endif /* _IXGB_H_ */ 207