1 /******************************************************************************* 2 3 Intel(R) 82576 Virtual Function Linux driver 4 Copyright(c) 2009 - 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 /* Linux PRO/1000 Ethernet Driver main header file */ 29 30 #ifndef _IGBVF_H_ 31 #define _IGBVF_H_ 32 33 #include <linux/types.h> 34 #include <linux/timer.h> 35 #include <linux/io.h> 36 #include <linux/netdevice.h> 37 #include <linux/if_vlan.h> 38 39 #include "vf.h" 40 41 /* Forward declarations */ 42 struct igbvf_info; 43 struct igbvf_adapter; 44 45 /* Interrupt defines */ 46 #define IGBVF_START_ITR 488 /* ~8000 ints/sec */ 47 #define IGBVF_4K_ITR 980 48 #define IGBVF_20K_ITR 196 49 #define IGBVF_70K_ITR 56 50 51 enum latency_range { 52 lowest_latency = 0, 53 low_latency = 1, 54 bulk_latency = 2, 55 latency_invalid = 255 56 }; 57 58 59 /* Interrupt modes, as used by the IntMode parameter */ 60 #define IGBVF_INT_MODE_LEGACY 0 61 #define IGBVF_INT_MODE_MSI 1 62 #define IGBVF_INT_MODE_MSIX 2 63 64 /* Tx/Rx descriptor defines */ 65 #define IGBVF_DEFAULT_TXD 256 66 #define IGBVF_MAX_TXD 4096 67 #define IGBVF_MIN_TXD 80 68 69 #define IGBVF_DEFAULT_RXD 256 70 #define IGBVF_MAX_RXD 4096 71 #define IGBVF_MIN_RXD 80 72 73 #define IGBVF_MIN_ITR_USECS 10 /* 100000 irq/sec */ 74 #define IGBVF_MAX_ITR_USECS 10000 /* 100 irq/sec */ 75 76 /* RX descriptor control thresholds. 77 * PTHRESH - MAC will consider prefetch if it has fewer than this number of 78 * descriptors available in its onboard memory. 79 * Setting this to 0 disables RX descriptor prefetch. 80 * HTHRESH - MAC will only prefetch if there are at least this many descriptors 81 * available in host memory. 82 * If PTHRESH is 0, this should also be 0. 83 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back 84 * descriptors until either it has this many to write back, or the 85 * ITR timer expires. 86 */ 87 #define IGBVF_RX_PTHRESH 16 88 #define IGBVF_RX_HTHRESH 8 89 #define IGBVF_RX_WTHRESH 1 90 91 /* this is the size past which hardware will drop packets when setting LPE=0 */ 92 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 93 94 #define IGBVF_FC_PAUSE_TIME 0x0680 /* 858 usec */ 95 96 /* How many Tx Descriptors do we need to call netif_wake_queue ? */ 97 #define IGBVF_TX_QUEUE_WAKE 32 98 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 99 #define IGBVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 100 101 #define AUTO_ALL_MODES 0 102 #define IGBVF_EEPROM_APME 0x0400 103 104 #define IGBVF_MNG_VLAN_NONE (-1) 105 106 /* Number of packet split data buffers (not including the header buffer) */ 107 #define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1) 108 109 enum igbvf_boards { 110 board_vf, 111 board_i350_vf, 112 }; 113 114 struct igbvf_queue_stats { 115 u64 packets; 116 u64 bytes; 117 }; 118 119 /* 120 * wrappers around a pointer to a socket buffer, 121 * so a DMA handle can be stored along with the buffer 122 */ 123 struct igbvf_buffer { 124 dma_addr_t dma; 125 struct sk_buff *skb; 126 union { 127 /* Tx */ 128 struct { 129 unsigned long time_stamp; 130 union e1000_adv_tx_desc *next_to_watch; 131 u16 length; 132 u16 mapped_as_page; 133 }; 134 /* Rx */ 135 struct { 136 struct page *page; 137 u64 page_dma; 138 unsigned int page_offset; 139 }; 140 }; 141 }; 142 143 union igbvf_desc { 144 union e1000_adv_rx_desc rx_desc; 145 union e1000_adv_tx_desc tx_desc; 146 struct e1000_adv_tx_context_desc tx_context_desc; 147 }; 148 149 struct igbvf_ring { 150 struct igbvf_adapter *adapter; /* backlink */ 151 union igbvf_desc *desc; /* pointer to ring memory */ 152 dma_addr_t dma; /* phys address of ring */ 153 unsigned int size; /* length of ring in bytes */ 154 unsigned int count; /* number of desc. in ring */ 155 156 u16 next_to_use; 157 u16 next_to_clean; 158 159 u16 head; 160 u16 tail; 161 162 /* array of buffer information structs */ 163 struct igbvf_buffer *buffer_info; 164 struct napi_struct napi; 165 166 char name[IFNAMSIZ + 5]; 167 u32 eims_value; 168 u32 itr_val; 169 enum latency_range itr_range; 170 u16 itr_register; 171 int set_itr; 172 173 struct sk_buff *rx_skb_top; 174 175 struct igbvf_queue_stats stats; 176 }; 177 178 /* board specific private data structure */ 179 struct igbvf_adapter { 180 struct timer_list watchdog_timer; 181 struct timer_list blink_timer; 182 183 struct work_struct reset_task; 184 struct work_struct watchdog_task; 185 186 const struct igbvf_info *ei; 187 188 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 189 u32 bd_number; 190 u32 rx_buffer_len; 191 u32 polling_interval; 192 u16 mng_vlan_id; 193 u16 link_speed; 194 u16 link_duplex; 195 196 spinlock_t tx_queue_lock; /* prevent concurrent tail updates */ 197 198 /* track device up/down/testing state */ 199 unsigned long state; 200 201 /* Interrupt Throttle Rate */ 202 u32 requested_itr; /* ints/sec or adaptive */ 203 u32 current_itr; /* Actual ITR register value, not ints/sec */ 204 205 /* 206 * Tx 207 */ 208 struct igbvf_ring *tx_ring /* One per active queue */ 209 ____cacheline_aligned_in_smp; 210 211 unsigned int restart_queue; 212 u32 txd_cmd; 213 214 u32 tx_int_delay; 215 u32 tx_abs_int_delay; 216 217 unsigned int total_tx_bytes; 218 unsigned int total_tx_packets; 219 unsigned int total_rx_bytes; 220 unsigned int total_rx_packets; 221 222 /* Tx stats */ 223 u32 tx_timeout_count; 224 u32 tx_fifo_head; 225 u32 tx_head_addr; 226 u32 tx_fifo_size; 227 u32 tx_dma_failed; 228 229 /* 230 * Rx 231 */ 232 struct igbvf_ring *rx_ring; 233 234 u32 rx_int_delay; 235 u32 rx_abs_int_delay; 236 237 /* Rx stats */ 238 u64 hw_csum_err; 239 u64 hw_csum_good; 240 u64 rx_hdr_split; 241 u32 alloc_rx_buff_failed; 242 u32 rx_dma_failed; 243 244 unsigned int rx_ps_hdr_size; 245 u32 max_frame_size; 246 u32 min_frame_size; 247 248 /* OS defined structs */ 249 struct net_device *netdev; 250 struct pci_dev *pdev; 251 struct net_device_stats net_stats; 252 spinlock_t stats_lock; /* prevent concurrent stats updates */ 253 254 /* structs defined in e1000_hw.h */ 255 struct e1000_hw hw; 256 257 /* The VF counters don't clear on read so we have to get a base 258 * count on driver start up and always subtract that base on 259 * on the first update, thus the flag.. 260 */ 261 struct e1000_vf_stats stats; 262 u64 zero_base; 263 264 struct igbvf_ring test_tx_ring; 265 struct igbvf_ring test_rx_ring; 266 u32 test_icr; 267 268 u32 msg_enable; 269 struct msix_entry *msix_entries; 270 int int_mode; 271 u32 eims_enable_mask; 272 u32 eims_other; 273 u32 int_counter0; 274 u32 int_counter1; 275 276 u32 eeprom_wol; 277 u32 wol; 278 u32 pba; 279 280 bool fc_autoneg; 281 282 unsigned long led_status; 283 284 unsigned int flags; 285 unsigned long last_reset; 286 }; 287 288 struct igbvf_info { 289 enum e1000_mac_type mac; 290 unsigned int flags; 291 u32 pba; 292 void (*init_ops)(struct e1000_hw *); 293 s32 (*get_variants)(struct igbvf_adapter *); 294 }; 295 296 /* hardware capability, feature, and workaround flags */ 297 #define IGBVF_FLAG_RX_CSUM_DISABLED (1 << 0) 298 #define IGBVF_FLAG_RX_LB_VLAN_BSWAP (1 << 1) 299 #define IGBVF_RX_DESC_ADV(R, i) \ 300 (&((((R).desc))[i].rx_desc)) 301 #define IGBVF_TX_DESC_ADV(R, i) \ 302 (&((((R).desc))[i].tx_desc)) 303 #define IGBVF_TX_CTXTDESC_ADV(R, i) \ 304 (&((((R).desc))[i].tx_context_desc)) 305 306 enum igbvf_state_t { 307 __IGBVF_TESTING, 308 __IGBVF_RESETTING, 309 __IGBVF_DOWN 310 }; 311 312 extern char igbvf_driver_name[]; 313 extern const char igbvf_driver_version[]; 314 315 extern void igbvf_check_options(struct igbvf_adapter *); 316 extern void igbvf_set_ethtool_ops(struct net_device *); 317 318 extern int igbvf_up(struct igbvf_adapter *); 319 extern void igbvf_down(struct igbvf_adapter *); 320 extern void igbvf_reinit_locked(struct igbvf_adapter *); 321 extern int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *); 322 extern int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *); 323 extern void igbvf_free_rx_resources(struct igbvf_ring *); 324 extern void igbvf_free_tx_resources(struct igbvf_ring *); 325 extern void igbvf_update_stats(struct igbvf_adapter *); 326 327 extern unsigned int copybreak; 328 329 #endif /* _IGBVF_H_ */ 330