1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright(c) 1999 - 2008 Intel Corporation. */ 3 4 #ifndef _IXGB_H_ 5 #define _IXGB_H_ 6 7 #include <linux/stddef.h> 8 #include <linux/module.h> 9 #include <linux/types.h> 10 #include <asm/byteorder.h> 11 #include <linux/mm.h> 12 #include <linux/errno.h> 13 #include <linux/ioport.h> 14 #include <linux/pci.h> 15 #include <linux/kernel.h> 16 #include <linux/netdevice.h> 17 #include <linux/etherdevice.h> 18 #include <linux/skbuff.h> 19 #include <linux/delay.h> 20 #include <linux/timer.h> 21 #include <linux/slab.h> 22 #include <linux/vmalloc.h> 23 #include <linux/interrupt.h> 24 #include <linux/string.h> 25 #include <linux/pagemap.h> 26 #include <linux/dma-mapping.h> 27 #include <linux/bitops.h> 28 #include <asm/io.h> 29 #include <asm/irq.h> 30 #include <linux/capability.h> 31 #include <linux/in.h> 32 #include <linux/ip.h> 33 #include <linux/tcp.h> 34 #include <linux/udp.h> 35 #include <net/pkt_sched.h> 36 #include <linux/list.h> 37 #include <linux/reboot.h> 38 #include <net/checksum.h> 39 40 #include <linux/ethtool.h> 41 #include <linux/if_vlan.h> 42 43 #define BAR_0 0 44 #define BAR_1 1 45 46 struct ixgb_adapter; 47 #include "ixgb_hw.h" 48 #include "ixgb_ee.h" 49 #include "ixgb_ids.h" 50 51 /* TX/RX descriptor defines */ 52 #define DEFAULT_TXD 256 53 #define MAX_TXD 4096 54 #define MIN_TXD 64 55 56 /* hardware cannot reliably support more than 512 descriptors owned by 57 * hardware descriptor cache otherwise an unreliable ring under heavy 58 * receive load may result */ 59 #define DEFAULT_RXD 512 60 #define MAX_RXD 512 61 #define MIN_RXD 64 62 63 /* Supported Rx Buffer Sizes */ 64 #define IXGB_RXBUFFER_2048 2048 65 #define IXGB_RXBUFFER_4096 4096 66 #define IXGB_RXBUFFER_8192 8192 67 #define IXGB_RXBUFFER_16384 16384 68 69 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 70 #define IXGB_RX_BUFFER_WRITE 8 /* Must be power of 2 */ 71 72 /* wrapper around a pointer to a socket buffer, 73 * so a DMA handle can be stored along with the buffer */ 74 struct ixgb_buffer { 75 struct sk_buff *skb; 76 dma_addr_t dma; 77 unsigned long time_stamp; 78 u16 length; 79 u16 next_to_watch; 80 u16 mapped_as_page; 81 }; 82 83 struct ixgb_desc_ring { 84 /* pointer to the descriptor ring memory */ 85 void *desc; 86 /* physical address of the descriptor ring */ 87 dma_addr_t dma; 88 /* length of descriptor ring in bytes */ 89 unsigned int size; 90 /* number of descriptors in the ring */ 91 unsigned int count; 92 /* next descriptor to associate a buffer with */ 93 unsigned int next_to_use; 94 /* next descriptor to check for DD status bit */ 95 unsigned int next_to_clean; 96 /* array of buffer information structs */ 97 struct ixgb_buffer *buffer_info; 98 }; 99 100 #define IXGB_DESC_UNUSED(R) \ 101 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ 102 (R)->next_to_clean - (R)->next_to_use - 1) 103 104 #define IXGB_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i])) 105 #define IXGB_RX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_rx_desc) 106 #define IXGB_TX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_tx_desc) 107 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc) 108 109 /* board specific private data structure */ 110 111 struct ixgb_adapter { 112 struct timer_list watchdog_timer; 113 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 114 u32 bd_number; 115 u32 rx_buffer_len; 116 u32 part_num; 117 u16 link_speed; 118 u16 link_duplex; 119 struct work_struct tx_timeout_task; 120 121 /* TX */ 122 struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp; 123 unsigned int restart_queue; 124 unsigned long timeo_start; 125 u32 tx_cmd_type; 126 u64 hw_csum_tx_good; 127 u64 hw_csum_tx_error; 128 u32 tx_int_delay; 129 u32 tx_timeout_count; 130 bool tx_int_delay_enable; 131 bool detect_tx_hung; 132 133 /* RX */ 134 struct ixgb_desc_ring rx_ring; 135 u64 hw_csum_rx_error; 136 u64 hw_csum_rx_good; 137 u32 rx_int_delay; 138 bool rx_csum; 139 140 /* OS defined structs */ 141 struct napi_struct napi; 142 struct net_device *netdev; 143 struct pci_dev *pdev; 144 145 /* structs defined in ixgb_hw.h */ 146 struct ixgb_hw hw; 147 u16 msg_enable; 148 struct ixgb_hw_stats stats; 149 u32 alloc_rx_buff_failed; 150 bool have_msi; 151 unsigned long flags; 152 }; 153 154 enum ixgb_state_t { 155 /* TBD 156 __IXGB_TESTING, 157 __IXGB_RESETTING, 158 */ 159 __IXGB_DOWN 160 }; 161 162 /* Exported from other modules */ 163 void ixgb_check_options(struct ixgb_adapter *adapter); 164 void ixgb_set_ethtool_ops(struct net_device *netdev); 165 extern char ixgb_driver_name[]; 166 167 void ixgb_set_speed_duplex(struct net_device *netdev); 168 169 int ixgb_up(struct ixgb_adapter *adapter); 170 void ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog); 171 void ixgb_reset(struct ixgb_adapter *adapter); 172 int ixgb_setup_rx_resources(struct ixgb_adapter *adapter); 173 int ixgb_setup_tx_resources(struct ixgb_adapter *adapter); 174 void ixgb_free_rx_resources(struct ixgb_adapter *adapter); 175 void ixgb_free_tx_resources(struct ixgb_adapter *adapter); 176 void ixgb_update_stats(struct ixgb_adapter *adapter); 177 178 179 #endif /* _IXGB_H_ */ 180