drivers/net/ixgbevf/ixgbevf.h

   1 /*******************************************************************************
   2
   3   Intel 82599 Virtual Function driver
   4   Copyright(c) 1999 - 2009 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   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  24   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  25
  26 *******************************************************************************/
  27
  28 #ifndef _IXGBEVF_H_
  29 #define _IXGBEVF_H_
  30
  31 #include <linux/types.h>
  32 #include <linux/timer.h>
  33 #include <linux/io.h>
  34 #include <linux/netdevice.h>
  35
  36 #include "vf.h"
  37
  38 /* wrapper around a pointer to a socket buffer,
  39  * so a DMA handle can be stored along with the buffer */
  40 struct ixgbevf_tx_buffer {
  41         struct sk_buff *skb;
  42         dma_addr_t dma;
  43         unsigned long time_stamp;
  44         u16 length;
  45         u16 next_to_watch;
  46         u16 mapped_as_page;
  47 };
  48
  49 struct ixgbevf_rx_buffer {
  50         struct sk_buff *skb;
  51         dma_addr_t dma;
  52         struct page *page;
  53         dma_addr_t page_dma;
  54         unsigned int page_offset;
  55 };
  56
  57 struct ixgbevf_ring {
  58         struct ixgbevf_adapter *adapter;  /* backlink */
  59         void *desc;                     /* descriptor ring memory */
  60         dma_addr_t dma;                 /* phys. address of descriptor ring */
  61         unsigned int size;              /* length in bytes */
  62         unsigned int count;             /* amount of descriptors */
  63         unsigned int next_to_use;
  64         unsigned int next_to_clean;
  65
  66         int queue_index; /* needed for multiqueue queue management */
  67         union {
  68                 struct ixgbevf_tx_buffer *tx_buffer_info;
  69                 struct ixgbevf_rx_buffer *rx_buffer_info;
  70         };
  71
  72         u16 head;
  73         u16 tail;
  74
  75         unsigned int total_bytes;
  76         unsigned int total_packets;
  77
  78         u16 reg_idx; /* holds the special value that gets the hardware register
  79                       * offset associated with this ring, which is different
  80                       * for DCB and RSS modes */
  81
  82 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
  83         /* cpu for tx queue */
  84         int cpu;
  85 #endif
  86
  87         u64 v_idx; /* maps directly to the index for this ring in the hardware
  88                     * vector array, can also be used for finding the bit in EICR
  89                     * and friends that represents the vector for this ring */
  90
  91         u16 work_limit;                /* max work per interrupt */
  92         u16 rx_buf_len;
  93 };
  94
  95 enum ixgbevf_ring_f_enum {
  96         RING_F_NONE = 0,
  97         RING_F_ARRAY_SIZE      /* must be last in enum set */
  98 };
  99
 100 struct ixgbevf_ring_feature {
 101         int indices;
 102         int mask;
 103 };
 104
 105 /* How many Rx Buffers do we bundle into one write to the hardware ? */
 106 #define IXGBEVF_RX_BUFFER_WRITE 16      /* Must be power of 2 */
 107
 108 #define MAX_RX_QUEUES 1
 109 #define MAX_TX_QUEUES 1
 110
 111 #define IXGBEVF_DEFAULT_TXD   1024
 112 #define IXGBEVF_DEFAULT_RXD   512
 113 #define IXGBEVF_MAX_TXD       4096
 114 #define IXGBEVF_MIN_TXD       64
 115 #define IXGBEVF_MAX_RXD       4096
 116 #define IXGBEVF_MIN_RXD       64
 117
 118 /* Supported Rx Buffer Sizes */
 119 #define IXGBEVF_RXBUFFER_64    64     /* Used for packet split */
 120 #define IXGBEVF_RXBUFFER_128   128    /* Used for packet split */
 121 #define IXGBEVF_RXBUFFER_256   256    /* Used for packet split */
 122 #define IXGBEVF_RXBUFFER_2048  2048
 123 #define IXGBEVF_MAX_RXBUFFER   16384  /* largest size for single descriptor */
 124
 125 #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256
 126
 127 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
 128
 129 #define IXGBE_TX_FLAGS_CSUM             (u32)(1)
 130 #define IXGBE_TX_FLAGS_VLAN             (u32)(1 << 1)
 131 #define IXGBE_TX_FLAGS_TSO              (u32)(1 << 2)
 132 #define IXGBE_TX_FLAGS_IPV4             (u32)(1 << 3)
 133 #define IXGBE_TX_FLAGS_FCOE             (u32)(1 << 4)
 134 #define IXGBE_TX_FLAGS_FSO              (u32)(1 << 5)
 135 #define IXGBE_TX_FLAGS_VLAN_MASK        0xffff0000
 136 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK   0x0000e000
 137 #define IXGBE_TX_FLAGS_VLAN_SHIFT       16
 138
 139 /* MAX_MSIX_Q_VECTORS of these are allocated,
 140  * but we only use one per queue-specific vector.
 141  */
 142 struct ixgbevf_q_vector {
 143         struct ixgbevf_adapter *adapter;
 144         struct napi_struct napi;
 145         DECLARE_BITMAP(rxr_idx, MAX_RX_QUEUES); /* Rx ring indices */
 146         DECLARE_BITMAP(txr_idx, MAX_TX_QUEUES); /* Tx ring indices */
 147         u8 rxr_count;     /* Rx ring count assigned to this vector */
 148         u8 txr_count;     /* Tx ring count assigned to this vector */
 149         u8 tx_itr;
 150         u8 rx_itr;
 151         u32 eitr;
 152         int v_idx;        /* vector index in list */
 153 };
 154
 155 /* Helper macros to switch between ints/sec and what the register uses.
 156  * And yes, it's the same math going both ways.  The lowest value
 157  * supported by all of the ixgbe hardware is 8.
 158  */
 159 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \
 160         ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
 161 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
 162
 163 #define IXGBE_DESC_UNUSED(R) \
 164         ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
 165         (R)->next_to_clean - (R)->next_to_use - 1)
 166
 167 #define IXGBE_RX_DESC_ADV(R, i)     \
 168         (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
 169 #define IXGBE_TX_DESC_ADV(R, i)     \
 170         (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
 171 #define IXGBE_TX_CTXTDESC_ADV(R, i)         \
 172         (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
 173
 174 #define IXGBE_MAX_JUMBO_FRAME_SIZE        16128
 175
 176 #define OTHER_VECTOR 1
 177 #define NON_Q_VECTORS (OTHER_VECTOR)
 178
 179 #define MAX_MSIX_Q_VECTORS 2
 180 #define MAX_MSIX_COUNT 2
 181
 182 #define MIN_MSIX_Q_VECTORS 2
 183 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
 184
 185 /* board specific private data structure */
 186 struct ixgbevf_adapter {
 187         struct timer_list watchdog_timer;
 188 #ifdef NETIF_F_HW_VLAN_TX
 189         struct vlan_group *vlgrp;
 190 #endif
 191         u16 bd_number;
 192         struct work_struct reset_task;
 193         struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
 194         char name[MAX_MSIX_COUNT][IFNAMSIZ + 9];
 195
 196         /* Interrupt Throttle Rate */
 197         u32 itr_setting;
 198         u16 eitr_low;
 199         u16 eitr_high;
 200
 201         /* TX */
 202         struct ixgbevf_ring *tx_ring;   /* One per active queue */
 203         int num_tx_queues;
 204         u64 restart_queue;
 205         u64 hw_csum_tx_good;
 206         u64 lsc_int;
 207         u64 hw_tso_ctxt;
 208         u64 hw_tso6_ctxt;
 209         u32 tx_timeout_count;
 210         bool detect_tx_hung;
 211
 212         /* RX */
 213         struct ixgbevf_ring *rx_ring;   /* One per active queue */
 214         int num_rx_queues;
 215         int num_rx_pools;               /* == num_rx_queues in 82598 */
 216         int num_rx_queues_per_pool;     /* 1 if 82598, can be many if 82599 */
 217         u64 hw_csum_rx_error;
 218         u64 hw_rx_no_dma_resources;
 219         u64 hw_csum_rx_good;
 220         u64 non_eop_descs;
 221         int num_msix_vectors;
 222         int max_msix_q_vectors;         /* true count of q_vectors for device */
 223         struct ixgbevf_ring_feature ring_feature[RING_F_ARRAY_SIZE];
 224         struct msix_entry *msix_entries;
 225
 226         u64 rx_hdr_split;
 227         u32 alloc_rx_page_failed;
 228         u32 alloc_rx_buff_failed;
 229
 230         /* Some features need tri-state capability,
 231          * thus the additional *_CAPABLE flags.
 232          */
 233         u32 flags;
 234 #define IXGBE_FLAG_RX_CSUM_ENABLED              (u32)(1)
 235 #define IXGBE_FLAG_RX_1BUF_CAPABLE              (u32)(1 << 1)
 236 #define IXGBE_FLAG_RX_PS_CAPABLE                (u32)(1 << 2)
 237 #define IXGBE_FLAG_RX_PS_ENABLED                (u32)(1 << 3)
 238 #define IXGBE_FLAG_IN_NETPOLL                   (u32)(1 << 4)
 239 #define IXGBE_FLAG_IMIR_ENABLED                 (u32)(1 << 5)
 240 #define IXGBE_FLAG_MQ_CAPABLE                   (u32)(1 << 6)
 241 #define IXGBE_FLAG_NEED_LINK_UPDATE             (u32)(1 << 7)
 242 #define IXGBE_FLAG_IN_WATCHDOG_TASK             (u32)(1 << 8)
 243         /* OS defined structs */
 244         struct net_device *netdev;
 245         struct pci_dev *pdev;
 246
 247         /* structs defined in ixgbe_vf.h */
 248         struct ixgbe_hw hw;
 249         u16 msg_enable;
 250         struct ixgbevf_hw_stats stats;
 251         u64 zero_base;
 252         /* Interrupt Throttle Rate */
 253         u32 eitr_param;
 254
 255         unsigned long state;
 256         u32 *config_space;
 257         u64 tx_busy;
 258         unsigned int tx_ring_count;
 259         unsigned int rx_ring_count;
 260
 261         u32 link_speed;
 262         bool link_up;
 263         unsigned long link_check_timeout;
 264
 265         struct work_struct watchdog_task;
 266         bool netdev_registered;
 267         bool dev_closed;
 268 };
 269
 270 enum ixbgevf_state_t {
 271         __IXGBEVF_TESTING,
 272         __IXGBEVF_RESETTING,
 273         __IXGBEVF_DOWN
 274 };
 275
 276 enum ixgbevf_boards {
 277         board_82599_vf,
 278 };
 279
 280 extern struct ixgbevf_info ixgbevf_vf_info;
 281 extern struct ixgbe_mac_operations ixgbevf_mbx_ops;
 282
 283 /* needed by ethtool.c */
 284 extern char ixgbevf_driver_name[];
 285 extern const char ixgbevf_driver_version[];
 286
 287 extern int ixgbevf_up(struct ixgbevf_adapter *adapter);
 288 extern void ixgbevf_down(struct ixgbevf_adapter *adapter);
 289 extern void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter);
 290 extern void ixgbevf_reset(struct ixgbevf_adapter *adapter);
 291 extern void ixgbevf_set_ethtool_ops(struct net_device *netdev);
 292 extern int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *,
 293                                       struct ixgbevf_ring *);
 294 extern int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *,
 295                                       struct ixgbevf_ring *);
 296 extern void ixgbevf_free_rx_resources(struct ixgbevf_adapter *,
 297                                       struct ixgbevf_ring *);
 298 extern void ixgbevf_free_tx_resources(struct ixgbevf_adapter *,
 299                                       struct ixgbevf_ring *);
 300 extern void ixgbevf_update_stats(struct ixgbevf_adapter *adapter);
 301
 302 #ifdef ETHTOOL_OPS_COMPAT
 303 extern int ethtool_ioctl(struct ifreq *ifr);
 304
 305 #endif
 306 extern void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter);
 307 extern void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter);
 308
 309 #ifdef DEBUG
 310 extern char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw);
 311 #define hw_dbg(hw, format, arg...) \
 312         printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg)
 313 #else
 314 #define hw_dbg(hw, format, arg...) do {} while (0)
 315 #endif
 316
 317 #endif /* _IXGBEVF_H_ */