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 struct page *page; 56 dma_addr_t page_dma; 57 unsigned int page_offset; 58 }; 59 60 struct ixgbevf_ring { 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 #if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE) 87 /* cpu for tx queue */ 88 int cpu; 89 #endif 90 91 u64 v_idx; /* maps directly to the index for this ring in the hardware 92 * vector array, can also be used for finding the bit in EICR 93 * and friends that represents the vector for this ring */ 94 95 u16 work_limit; /* max work per interrupt */ 96 u16 rx_buf_len; 97 }; 98 99 enum ixgbevf_ring_f_enum { 100 RING_F_NONE = 0, 101 RING_F_ARRAY_SIZE /* must be last in enum set */ 102 }; 103 104 struct ixgbevf_ring_feature { 105 int indices; 106 int mask; 107 }; 108 109 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 110 #define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 111 112 #define MAX_RX_QUEUES 1 113 #define MAX_TX_QUEUES 1 114 115 #define IXGBEVF_DEFAULT_TXD 1024 116 #define IXGBEVF_DEFAULT_RXD 512 117 #define IXGBEVF_MAX_TXD 4096 118 #define IXGBEVF_MIN_TXD 64 119 #define IXGBEVF_MAX_RXD 4096 120 #define IXGBEVF_MIN_RXD 64 121 122 /* Supported Rx Buffer Sizes */ 123 #define IXGBEVF_RXBUFFER_64 64 /* Used for packet split */ 124 #define IXGBEVF_RXBUFFER_128 128 /* Used for packet split */ 125 #define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */ 126 #define IXGBEVF_RXBUFFER_2048 2048 127 #define IXGBEVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */ 128 129 #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256 130 131 #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) 132 133 #define IXGBE_TX_FLAGS_CSUM (u32)(1) 134 #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1) 135 #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2) 136 #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3) 137 #define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4) 138 #define IXGBE_TX_FLAGS_FSO (u32)(1 << 5) 139 #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000 140 #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000 141 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16 142 143 /* MAX_MSIX_Q_VECTORS of these are allocated, 144 * but we only use one per queue-specific vector. 145 */ 146 struct ixgbevf_q_vector { 147 struct ixgbevf_adapter *adapter; 148 struct napi_struct napi; 149 DECLARE_BITMAP(rxr_idx, MAX_RX_QUEUES); /* Rx ring indices */ 150 DECLARE_BITMAP(txr_idx, MAX_TX_QUEUES); /* Tx ring indices */ 151 u8 rxr_count; /* Rx ring count assigned to this vector */ 152 u8 txr_count; /* Tx ring count assigned to this vector */ 153 u8 tx_itr; 154 u8 rx_itr; 155 u32 eitr; 156 int v_idx; /* vector index in list */ 157 }; 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 IXGBE_RX_DESC_ADV(R, i) \ 172 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i])) 173 #define IXGBE_TX_DESC_ADV(R, i) \ 174 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i])) 175 #define IXGBE_TX_CTXTDESC_ADV(R, i) \ 176 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i])) 177 178 #define IXGBE_MAX_JUMBO_FRAME_SIZE 16128 179 180 #define OTHER_VECTOR 1 181 #define NON_Q_VECTORS (OTHER_VECTOR) 182 183 #define MAX_MSIX_Q_VECTORS 2 184 #define MAX_MSIX_COUNT 2 185 186 #define MIN_MSIX_Q_VECTORS 2 187 #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 char name[MAX_MSIX_COUNT][IFNAMSIZ + 9]; 197 198 /* Interrupt Throttle Rate */ 199 u32 itr_setting; 200 u16 eitr_low; 201 u16 eitr_high; 202 203 /* TX */ 204 struct ixgbevf_ring *tx_ring; /* One per active queue */ 205 int num_tx_queues; 206 u64 restart_queue; 207 u64 hw_csum_tx_good; 208 u64 lsc_int; 209 u64 hw_tso_ctxt; 210 u64 hw_tso6_ctxt; 211 u32 tx_timeout_count; 212 213 /* RX */ 214 struct ixgbevf_ring *rx_ring; /* One per active queue */ 215 int num_rx_queues; 216 int num_rx_pools; /* == num_rx_queues in 82598 */ 217 int num_rx_queues_per_pool; /* 1 if 82598, can be many if 82599 */ 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 int max_msix_q_vectors; /* true count of q_vectors for device */ 224 struct ixgbevf_ring_feature ring_feature[RING_F_ARRAY_SIZE]; 225 struct msix_entry *msix_entries; 226 227 u64 rx_hdr_split; 228 u32 alloc_rx_page_failed; 229 u32 alloc_rx_buff_failed; 230 231 /* Some features need tri-state capability, 232 * thus the additional *_CAPABLE flags. 233 */ 234 u32 flags; 235 #define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1) 236 #define IXGBE_FLAG_RX_1BUF_CAPABLE (u32)(1 << 1) 237 #define IXGBE_FLAG_RX_PS_CAPABLE (u32)(1 << 2) 238 #define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 3) 239 #define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 4) 240 #define IXGBE_FLAG_IMIR_ENABLED (u32)(1 << 5) 241 #define IXGBE_FLAG_MQ_CAPABLE (u32)(1 << 6) 242 #define IXGBE_FLAG_NEED_LINK_UPDATE (u32)(1 << 7) 243 #define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 8) 244 /* OS defined structs */ 245 struct net_device *netdev; 246 struct pci_dev *pdev; 247 248 /* structs defined in ixgbe_vf.h */ 249 struct ixgbe_hw hw; 250 u16 msg_enable; 251 struct ixgbevf_hw_stats stats; 252 u64 zero_base; 253 /* Interrupt Throttle Rate */ 254 u32 eitr_param; 255 256 unsigned long state; 257 u32 *config_space; 258 u64 tx_busy; 259 unsigned int tx_ring_count; 260 unsigned int rx_ring_count; 261 262 u32 link_speed; 263 bool link_up; 264 unsigned long link_check_timeout; 265 266 struct work_struct watchdog_task; 267 bool netdev_registered; 268 bool dev_closed; 269 }; 270 271 enum ixbgevf_state_t { 272 __IXGBEVF_TESTING, 273 __IXGBEVF_RESETTING, 274 __IXGBEVF_DOWN 275 }; 276 277 enum ixgbevf_boards { 278 board_82599_vf, 279 board_X540_vf, 280 }; 281 282 extern const struct ixgbevf_info ixgbevf_82599_vf_info; 283 extern const struct ixgbevf_info ixgbevf_X540_vf_info; 284 extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops; 285 286 /* needed by ethtool.c */ 287 extern const char ixgbevf_driver_name[]; 288 extern const char ixgbevf_driver_version[]; 289 290 extern void ixgbevf_up(struct ixgbevf_adapter *adapter); 291 extern void ixgbevf_down(struct ixgbevf_adapter *adapter); 292 extern void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter); 293 extern void ixgbevf_reset(struct ixgbevf_adapter *adapter); 294 extern void ixgbevf_set_ethtool_ops(struct net_device *netdev); 295 extern int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *, 296 struct ixgbevf_ring *); 297 extern int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *, 298 struct ixgbevf_ring *); 299 extern void ixgbevf_free_rx_resources(struct ixgbevf_adapter *, 300 struct ixgbevf_ring *); 301 extern void ixgbevf_free_tx_resources(struct ixgbevf_adapter *, 302 struct ixgbevf_ring *); 303 extern void ixgbevf_update_stats(struct ixgbevf_adapter *adapter); 304 305 #ifdef ETHTOOL_OPS_COMPAT 306 extern int ethtool_ioctl(struct ifreq *ifr); 307 308 #endif 309 extern void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter); 310 extern void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter); 311 312 #ifdef DEBUG 313 extern char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw); 314 #define hw_dbg(hw, format, arg...) \ 315 printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg) 316 #else 317 #define hw_dbg(hw, format, arg...) do {} while (0) 318 #endif 319 320 #endif /* _IXGBEVF_H_ */ 321