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 void *desc; /* descriptor ring memory */ 62 dma_addr_t dma; /* phys. address of descriptor ring */ 63 unsigned int size; /* length in bytes */ 64 unsigned int count; /* amount of descriptors */ 65 unsigned int next_to_use; 66 unsigned int next_to_clean; 67 68 int queue_index; /* needed for multiqueue queue management */ 69 union { 70 struct ixgbevf_tx_buffer *tx_buffer_info; 71 struct ixgbevf_rx_buffer *rx_buffer_info; 72 }; 73 74 u64 total_bytes; 75 u64 total_packets; 76 struct u64_stats_sync syncp; 77 u64 hw_csum_rx_error; 78 u64 hw_csum_rx_good; 79 80 u16 head; 81 u16 tail; 82 83 u16 reg_idx; /* holds the special value that gets the hardware register 84 * offset associated with this ring, which is different 85 * for DCB and RSS modes */ 86 87 u16 rx_buf_len; 88 }; 89 90 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 91 #define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 92 93 #define MAX_RX_QUEUES IXGBE_VF_MAX_RX_QUEUES 94 #define MAX_TX_QUEUES IXGBE_VF_MAX_TX_QUEUES 95 96 #define IXGBEVF_DEFAULT_TXD 1024 97 #define IXGBEVF_DEFAULT_RXD 512 98 #define IXGBEVF_MAX_TXD 4096 99 #define IXGBEVF_MIN_TXD 64 100 #define IXGBEVF_MAX_RXD 4096 101 #define IXGBEVF_MIN_RXD 64 102 103 /* Supported Rx Buffer Sizes */ 104 #define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */ 105 #define IXGBEVF_RXBUFFER_2K 2048 106 #define IXGBEVF_RXBUFFER_4K 4096 107 #define IXGBEVF_RXBUFFER_8K 8192 108 #define IXGBEVF_RXBUFFER_10K 10240 109 110 #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256 111 112 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) 113 114 #define IXGBE_TX_FLAGS_CSUM (u32)(1) 115 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1) 116 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2) 117 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3) 118 #define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4) 119 #define IXGBE_TX_FLAGS_FSO (u32)(1 << 5) 120 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000 121 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000 122 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16 123 124 struct ixgbevf_ring_container { 125 struct ixgbevf_ring *ring; /* pointer to linked list of rings */ 126 unsigned int total_bytes; /* total bytes processed this int */ 127 unsigned int total_packets; /* total packets processed this int */ 128 u8 count; /* total number of rings in vector */ 129 u8 itr; /* current ITR setting for ring */ 130 }; 131 132 /* iterator for handling rings in ring container */ 133 #define ixgbevf_for_each_ring(pos, head) \ 134 for (pos = (head).ring; pos != NULL; pos = pos->next) 135 136 /* MAX_MSIX_Q_VECTORS of these are allocated, 137 * but we only use one per queue-specific vector. 138 */ 139 struct ixgbevf_q_vector { 140 struct ixgbevf_adapter *adapter; 141 u16 v_idx; /* index of q_vector within array, also used for 142 * finding the bit in EICR and friends that 143 * represents the vector for this ring */ 144 u16 itr; /* Interrupt throttle rate written to EITR */ 145 struct napi_struct napi; 146 struct ixgbevf_ring_container rx, tx; 147 char name[IFNAMSIZ + 9]; 148 }; 149 150 /* 151 * microsecond values for various ITR rates shifted by 2 to fit itr register 152 * with the first 3 bits reserved 0 153 */ 154 #define IXGBE_MIN_RSC_ITR 24 155 #define IXGBE_100K_ITR 40 156 #define IXGBE_20K_ITR 200 157 #define IXGBE_10K_ITR 400 158 #define IXGBE_8K_ITR 500 159 160 /* Helper macros to switch between ints/sec and what the register uses. 161 * And yes, it's the same math going both ways. The lowest value 162 * supported by all of the ixgbe hardware is 8. 163 */ 164 #define EITR_INTS_PER_SEC_TO_REG(_eitr) \ 165 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8) 166 #define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG 167 168 #define IXGBE_DESC_UNUSED(R) \ 169 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ 170 (R)->next_to_clean - (R)->next_to_use - 1) 171 172 #define IXGBEVF_RX_DESC(R, i) \ 173 (&(((union ixgbe_adv_rx_desc *)((R)->desc))[i])) 174 #define IXGBEVF_TX_DESC(R, i) \ 175 (&(((union ixgbe_adv_tx_desc *)((R)->desc))[i])) 176 #define IXGBEVF_TX_CTXTDESC(R, i) \ 177 (&(((struct ixgbe_adv_tx_context_desc *)((R)->desc))[i])) 178 179 #define IXGBE_MAX_JUMBO_FRAME_SIZE 9728 /* Maximum Supported Size 9.5KB */ 180 181 #define OTHER_VECTOR 1 182 #define NON_Q_VECTORS (OTHER_VECTOR) 183 184 #define MAX_MSIX_Q_VECTORS 2 185 186 #define MIN_MSIX_Q_VECTORS 1 187 #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS) 188 189 /* board specific private data structure */ 190 struct ixgbevf_adapter { 191 struct timer_list watchdog_timer; 192 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 193 u16 bd_number; 194 struct work_struct reset_task; 195 struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS]; 196 197 /* Interrupt Throttle Rate */ 198 u16 rx_itr_setting; 199 u16 tx_itr_setting; 200 201 /* interrupt masks */ 202 u32 eims_enable_mask; 203 u32 eims_other; 204 205 /* TX */ 206 struct ixgbevf_ring *tx_ring; /* One per active queue */ 207 int num_tx_queues; 208 u64 restart_queue; 209 u64 hw_csum_tx_good; 210 u64 lsc_int; 211 u64 hw_tso_ctxt; 212 u64 hw_tso6_ctxt; 213 u32 tx_timeout_count; 214 215 /* RX */ 216 struct ixgbevf_ring *rx_ring; /* One per active queue */ 217 int num_rx_queues; 218 u64 hw_csum_rx_error; 219 u64 hw_rx_no_dma_resources; 220 u64 hw_csum_rx_good; 221 u64 non_eop_descs; 222 int num_msix_vectors; 223 struct msix_entry *msix_entries; 224 225 u32 alloc_rx_page_failed; 226 u32 alloc_rx_buff_failed; 227 228 /* Some features need tri-state capability, 229 * thus the additional *_CAPABLE flags. 230 */ 231 u32 flags; 232 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1) 233 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 1) 234 235 /* OS defined structs */ 236 struct net_device *netdev; 237 struct pci_dev *pdev; 238 239 /* structs defined in ixgbe_vf.h */ 240 struct ixgbe_hw hw; 241 u16 msg_enable; 242 struct ixgbevf_hw_stats stats; 243 u64 zero_base; 244 /* Interrupt Throttle Rate */ 245 u32 eitr_param; 246 247 unsigned long state; 248 u64 tx_busy; 249 unsigned int tx_ring_count; 250 unsigned int rx_ring_count; 251 252 u32 link_speed; 253 bool link_up; 254 255 struct work_struct watchdog_task; 256 257 spinlock_t mbx_lock; 258 }; 259 260 enum ixbgevf_state_t { 261 __IXGBEVF_TESTING, 262 __IXGBEVF_RESETTING, 263 __IXGBEVF_DOWN 264 }; 265 266 struct ixgbevf_cb { 267 struct sk_buff *prev; 268 }; 269 #define IXGBE_CB(skb) ((struct ixgbevf_cb *)(skb)->cb) 270 271 enum ixgbevf_boards { 272 board_82599_vf, 273 board_X540_vf, 274 }; 275 276 extern const struct ixgbevf_info ixgbevf_82599_vf_info; 277 extern const struct ixgbevf_info ixgbevf_X540_vf_info; 278 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops; 279 280 /* needed by ethtool.c */ 281 extern const char ixgbevf_driver_name[]; 282 extern const char ixgbevf_driver_version[]; 283 284 extern void ixgbevf_up(struct ixgbevf_adapter *adapter); 285 extern void ixgbevf_down(struct ixgbevf_adapter *adapter); 286 extern void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter); 287 extern void ixgbevf_reset(struct ixgbevf_adapter *adapter); 288 extern void ixgbevf_set_ethtool_ops(struct net_device *netdev); 289 extern int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *, 290 struct ixgbevf_ring *); 291 extern int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *, 292 struct ixgbevf_ring *); 293 extern void ixgbevf_free_rx_resources(struct ixgbevf_adapter *, 294 struct ixgbevf_ring *); 295 extern void ixgbevf_free_tx_resources(struct ixgbevf_adapter *, 296 struct ixgbevf_ring *); 297 extern void ixgbevf_update_stats(struct ixgbevf_adapter *adapter); 298 extern int ethtool_ioctl(struct ifreq *ifr); 299 300 extern void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter); 301 extern void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter); 302 303 #ifdef DEBUG 304 extern char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw); 305 #define hw_dbg(hw, format, arg...) \ 306 printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg) 307 #else 308 #define hw_dbg(hw, format, arg...) do {} while (0) 309 #endif 310 311 #endif /* _IXGBEVF_H_ */ 312