1 /******************************************************************************* 2 3 Intel 82599 Virtual Function driver 4 Copyright(c) 1999 - 2012 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/bitops.h> 33 #include <linux/timer.h> 34 #include <linux/io.h> 35 #include <linux/netdevice.h> 36 #include <linux/if_vlan.h> 37 #include <linux/u64_stats_sync.h> 38 39 #include "vf.h" 40 41 /* wrapper around a pointer to a socket buffer, 42 * so a DMA handle can be stored along with the buffer */ 43 struct ixgbevf_tx_buffer { 44 struct sk_buff *skb; 45 dma_addr_t dma; 46 unsigned long time_stamp; 47 u16 length; 48 u16 next_to_watch; 49 u16 mapped_as_page; 50 }; 51 52 struct ixgbevf_rx_buffer { 53 struct sk_buff *skb; 54 dma_addr_t dma; 55 }; 56 57 struct ixgbevf_ring { 58 struct ixgbevf_ring *next; 59 struct net_device *netdev; 60 struct device *dev; 61 struct ixgbevf_adapter *adapter; /* backlink */ 62 void *desc; /* descriptor ring memory */ 63 dma_addr_t dma; /* phys. address of descriptor ring */ 64 unsigned int size; /* length in bytes */ 65 unsigned int count; /* amount of descriptors */ 66 unsigned int next_to_use; 67 unsigned int next_to_clean; 68 69 int queue_index; /* needed for multiqueue queue management */ 70 union { 71 struct ixgbevf_tx_buffer *tx_buffer_info; 72 struct ixgbevf_rx_buffer *rx_buffer_info; 73 }; 74 75 u64 total_bytes; 76 u64 total_packets; 77 struct u64_stats_sync syncp; 78 79 u16 head; 80 u16 tail; 81 82 u16 reg_idx; /* holds the special value that gets the hardware register 83 * offset associated with this ring, which is different 84 * for DCB and RSS modes */ 85 86 u16 rx_buf_len; 87 }; 88 89 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 90 #define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 91 92 #define MAX_RX_QUEUES 1 93 #define MAX_TX_QUEUES 1 94 95 #define IXGBEVF_DEFAULT_TXD 1024 96 #define IXGBEVF_DEFAULT_RXD 512 97 #define IXGBEVF_MAX_TXD 4096 98 #define IXGBEVF_MIN_TXD 64 99 #define IXGBEVF_MAX_RXD 4096 100 #define IXGBEVF_MIN_RXD 64 101 102 /* Supported Rx Buffer Sizes */ 103 #define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */ 104 #define IXGBEVF_RXBUFFER_3K 3072 105 #define IXGBEVF_RXBUFFER_7K 7168 106 #define IXGBEVF_RXBUFFER_15K 15360 107 #define IXGBEVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */ 108 109 #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256 110 111 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) 112 113 #define IXGBE_TX_FLAGS_CSUM (u32)(1) 114 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1) 115 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2) 116 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3) 117 #define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4) 118 #define IXGBE_TX_FLAGS_FSO (u32)(1 << 5) 119 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000 120 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000 121 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16 122 123 struct ixgbevf_ring_container { 124 struct ixgbevf_ring *ring; /* pointer to linked list of rings */ 125 unsigned int total_bytes; /* total bytes processed this int */ 126 unsigned int total_packets; /* total packets processed this int */ 127 u8 count; /* total number of rings in vector */ 128 u8 itr; /* current ITR setting for ring */ 129 }; 130 131 /* iterator for handling rings in ring container */ 132 #define ixgbevf_for_each_ring(pos, head) \ 133 for (pos = (head).ring; pos != NULL; pos = pos->next) 134 135 /* MAX_MSIX_Q_VECTORS of these are allocated, 136 * but we only use one per queue-specific vector. 137 */ 138 struct ixgbevf_q_vector { 139 struct ixgbevf_adapter *adapter; 140 u16 v_idx; /* index of q_vector within array, also used for 141 * finding the bit in EICR and friends that 142 * represents the vector for this ring */ 143 u16 itr; /* Interrupt throttle rate written to EITR */ 144 struct napi_struct napi; 145 struct ixgbevf_ring_container rx, tx; 146 char name[IFNAMSIZ + 9]; 147 }; 148 149 /* 150 * microsecond values for various ITR rates shifted by 2 to fit itr register 151 * with the first 3 bits reserved 0 152 */ 153 #define IXGBE_MIN_RSC_ITR 24 154 #define IXGBE_100K_ITR 40 155 #define IXGBE_20K_ITR 200 156 #define IXGBE_10K_ITR 400 157 #define IXGBE_8K_ITR 500 158 159 /* Helper macros to switch between ints/sec and what the register uses. 160 * And yes, it's the same math going both ways. The lowest value 161 * supported by all of the ixgbe hardware is 8. 162 */ 163 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \ 164 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8) 165 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG 166 167 #define IXGBE_DESC_UNUSED(R) \ 168 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ 169 (R)->next_to_clean - (R)->next_to_use - 1) 170 171 #define IXGBEVF_RX_DESC(R, i) \ 172 (&(((union ixgbe_adv_rx_desc *)((R)->desc))[i])) 173 #define IXGBEVF_TX_DESC(R, i) \ 174 (&(((union ixgbe_adv_tx_desc *)((R)->desc))[i])) 175 #define IXGBEVF_TX_CTXTDESC(R, i) \ 176 (&(((struct ixgbe_adv_tx_context_desc *)((R)->desc))[i])) 177 178 #define IXGBE_MAX_JUMBO_FRAME_SIZE 9728 /* Maximum Supported Size 9.5KB */ 179 180 #define OTHER_VECTOR 1 181 #define NON_Q_VECTORS (OTHER_VECTOR) 182 183 #define MAX_MSIX_Q_VECTORS 2 184 185 #define MIN_MSIX_Q_VECTORS 1 186 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS) 187 188 /* board specific private data structure */ 189 struct ixgbevf_adapter { 190 struct timer_list watchdog_timer; 191 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 192 u16 bd_number; 193 struct work_struct reset_task; 194 struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS]; 195 196 /* Interrupt Throttle Rate */ 197 u16 rx_itr_setting; 198 u16 tx_itr_setting; 199 200 /* interrupt masks */ 201 u32 eims_enable_mask; 202 u32 eims_other; 203 204 /* TX */ 205 struct ixgbevf_ring *tx_ring; /* One per active queue */ 206 int num_tx_queues; 207 u64 restart_queue; 208 u64 hw_csum_tx_good; 209 u64 lsc_int; 210 u64 hw_tso_ctxt; 211 u64 hw_tso6_ctxt; 212 u32 tx_timeout_count; 213 214 /* RX */ 215 struct ixgbevf_ring *rx_ring; /* One per active queue */ 216 int num_rx_queues; 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 struct msix_entry *msix_entries; 223 224 u32 alloc_rx_page_failed; 225 u32 alloc_rx_buff_failed; 226 227 /* Some features need tri-state capability, 228 * thus the additional *_CAPABLE flags. 229 */ 230 u32 flags; 231 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1) 232 233 /* OS defined structs */ 234 struct net_device *netdev; 235 struct pci_dev *pdev; 236 237 /* structs defined in ixgbe_vf.h */ 238 struct ixgbe_hw hw; 239 u16 msg_enable; 240 struct ixgbevf_hw_stats stats; 241 u64 zero_base; 242 /* Interrupt Throttle Rate */ 243 u32 eitr_param; 244 245 unsigned long state; 246 u64 tx_busy; 247 unsigned int tx_ring_count; 248 unsigned int rx_ring_count; 249 250 u32 link_speed; 251 bool link_up; 252 253 struct work_struct watchdog_task; 254 255 spinlock_t mbx_lock; 256 }; 257 258 enum ixbgevf_state_t { 259 __IXGBEVF_TESTING, 260 __IXGBEVF_RESETTING, 261 __IXGBEVF_DOWN 262 }; 263 264 struct ixgbevf_cb { 265 struct sk_buff *prev; 266 }; 267 #define IXGBE_CB(skb) ((struct ixgbevf_cb *)(skb)->cb) 268 269 enum ixgbevf_boards { 270 board_82599_vf, 271 board_X540_vf, 272 }; 273 274 extern const struct ixgbevf_info ixgbevf_82599_vf_info; 275 extern const struct ixgbevf_info ixgbevf_X540_vf_info; 276 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops; 277 278 /* needed by ethtool.c */ 279 extern const char ixgbevf_driver_name[]; 280 extern const char ixgbevf_driver_version[]; 281 282 extern void ixgbevf_up(struct ixgbevf_adapter *adapter); 283 extern void ixgbevf_down(struct ixgbevf_adapter *adapter); 284 extern void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter); 285 extern void ixgbevf_reset(struct ixgbevf_adapter *adapter); 286 extern void ixgbevf_set_ethtool_ops(struct net_device *netdev); 287 extern int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *, 288 struct ixgbevf_ring *); 289 extern int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *, 290 struct ixgbevf_ring *); 291 extern void ixgbevf_free_rx_resources(struct ixgbevf_adapter *, 292 struct ixgbevf_ring *); 293 extern void ixgbevf_free_tx_resources(struct ixgbevf_adapter *, 294 struct ixgbevf_ring *); 295 extern void ixgbevf_update_stats(struct ixgbevf_adapter *adapter); 296 extern int ethtool_ioctl(struct ifreq *ifr); 297 298 extern void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter); 299 extern void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter); 300 301 #ifdef DEBUG 302 extern char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw); 303 #define hw_dbg(hw, format, arg...) \ 304 printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg) 305 #else 306 #define hw_dbg(hw, format, arg...) do {} while (0) 307 #endif 308 309 #endif /* _IXGBEVF_H_ */ 310