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

INCLUDED FROM

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