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

   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_ */