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, see <http://www.gnu.org/licenses/>. 17 18 The full GNU General Public License is included in this distribution in 19 the file called "COPYING". 20 21 Contact Information: 22 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 23 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 24 25 *******************************************************************************/ 26 27 /* Linux PRO/1000 Ethernet Driver main header file */ 28 29 #ifndef _IGBVF_H_ 30 #define _IGBVF_H_ 31 32 #include <linux/types.h> 33 #include <linux/timer.h> 34 #include <linux/io.h> 35 #include <linux/netdevice.h> 36 #include <linux/if_vlan.h> 37 38 #include "vf.h" 39 40 /* Forward declarations */ 41 struct igbvf_info; 42 struct igbvf_adapter; 43 44 /* Interrupt defines */ 45 #define IGBVF_START_ITR 488 /* ~8000 ints/sec */ 46 #define IGBVF_4K_ITR 980 47 #define IGBVF_20K_ITR 196 48 #define IGBVF_70K_ITR 56 49 50 enum latency_range { 51 lowest_latency = 0, 52 low_latency = 1, 53 bulk_latency = 2, 54 latency_invalid = 255 55 }; 56 57 /* Interrupt modes, as used by the IntMode parameter */ 58 #define IGBVF_INT_MODE_LEGACY 0 59 #define IGBVF_INT_MODE_MSI 1 60 #define IGBVF_INT_MODE_MSIX 2 61 62 /* Tx/Rx descriptor defines */ 63 #define IGBVF_DEFAULT_TXD 256 64 #define IGBVF_MAX_TXD 4096 65 #define IGBVF_MIN_TXD 80 66 67 #define IGBVF_DEFAULT_RXD 256 68 #define IGBVF_MAX_RXD 4096 69 #define IGBVF_MIN_RXD 80 70 71 #define IGBVF_MIN_ITR_USECS 10 /* 100000 irq/sec */ 72 #define IGBVF_MAX_ITR_USECS 10000 /* 100 irq/sec */ 73 74 /* RX descriptor control thresholds. 75 * PTHRESH - MAC will consider prefetch if it has fewer than this number of 76 * descriptors available in its onboard memory. 77 * Setting this to 0 disables RX descriptor prefetch. 78 * HTHRESH - MAC will only prefetch if there are at least this many descriptors 79 * available in host memory. 80 * If PTHRESH is 0, this should also be 0. 81 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back 82 * descriptors until either it has this many to write back, or the 83 * ITR timer expires. 84 */ 85 #define IGBVF_RX_PTHRESH 16 86 #define IGBVF_RX_HTHRESH 8 87 #define IGBVF_RX_WTHRESH 1 88 89 /* this is the size past which hardware will drop packets when setting LPE=0 */ 90 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 91 92 #define IGBVF_FC_PAUSE_TIME 0x0680 /* 858 usec */ 93 94 /* How many Tx Descriptors do we need to call netif_wake_queue ? */ 95 #define IGBVF_TX_QUEUE_WAKE 32 96 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 97 #define IGBVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 98 99 #define AUTO_ALL_MODES 0 100 #define IGBVF_EEPROM_APME 0x0400 101 102 #define IGBVF_MNG_VLAN_NONE (-1) 103 104 /* Number of packet split data buffers (not including the header buffer) */ 105 #define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1) 106 107 enum igbvf_boards { 108 board_vf, 109 board_i350_vf, 110 }; 111 112 struct igbvf_queue_stats { 113 u64 packets; 114 u64 bytes; 115 }; 116 117 /* wrappers around a pointer to a socket buffer, 118 * so a DMA handle can be stored along with the buffer 119 */ 120 struct igbvf_buffer { 121 dma_addr_t dma; 122 struct sk_buff *skb; 123 union { 124 /* Tx */ 125 struct { 126 unsigned long time_stamp; 127 union e1000_adv_tx_desc *next_to_watch; 128 u16 length; 129 u16 mapped_as_page; 130 }; 131 /* Rx */ 132 struct { 133 struct page *page; 134 u64 page_dma; 135 unsigned int page_offset; 136 }; 137 }; 138 }; 139 140 union igbvf_desc { 141 union e1000_adv_rx_desc rx_desc; 142 union e1000_adv_tx_desc tx_desc; 143 struct e1000_adv_tx_context_desc tx_context_desc; 144 }; 145 146 struct igbvf_ring { 147 struct igbvf_adapter *adapter; /* backlink */ 148 union igbvf_desc *desc; /* pointer to ring memory */ 149 dma_addr_t dma; /* phys address of ring */ 150 unsigned int size; /* length of ring in bytes */ 151 unsigned int count; /* number of desc. in ring */ 152 153 u16 next_to_use; 154 u16 next_to_clean; 155 156 u16 head; 157 u16 tail; 158 159 /* array of buffer information structs */ 160 struct igbvf_buffer *buffer_info; 161 struct napi_struct napi; 162 163 char name[IFNAMSIZ + 5]; 164 u32 eims_value; 165 u32 itr_val; 166 enum latency_range itr_range; 167 u16 itr_register; 168 int set_itr; 169 170 struct sk_buff *rx_skb_top; 171 172 struct igbvf_queue_stats stats; 173 }; 174 175 /* board specific private data structure */ 176 struct igbvf_adapter { 177 struct timer_list watchdog_timer; 178 struct timer_list blink_timer; 179 180 struct work_struct reset_task; 181 struct work_struct watchdog_task; 182 183 const struct igbvf_info *ei; 184 185 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 186 u32 bd_number; 187 u32 rx_buffer_len; 188 u32 polling_interval; 189 u16 mng_vlan_id; 190 u16 link_speed; 191 u16 link_duplex; 192 193 spinlock_t tx_queue_lock; /* prevent concurrent tail updates */ 194 195 /* track device up/down/testing state */ 196 unsigned long state; 197 198 /* Interrupt Throttle Rate */ 199 u32 requested_itr; /* ints/sec or adaptive */ 200 u32 current_itr; /* Actual ITR register value, not ints/sec */ 201 202 /* Tx */ 203 struct igbvf_ring *tx_ring /* One per active queue */ 204 ____cacheline_aligned_in_smp; 205 206 unsigned int restart_queue; 207 u32 txd_cmd; 208 209 u32 tx_int_delay; 210 u32 tx_abs_int_delay; 211 212 unsigned int total_tx_bytes; 213 unsigned int total_tx_packets; 214 unsigned int total_rx_bytes; 215 unsigned int total_rx_packets; 216 217 /* Tx stats */ 218 u32 tx_timeout_count; 219 u32 tx_fifo_head; 220 u32 tx_head_addr; 221 u32 tx_fifo_size; 222 u32 tx_dma_failed; 223 224 /* Rx */ 225 struct igbvf_ring *rx_ring; 226 227 u32 rx_int_delay; 228 u32 rx_abs_int_delay; 229 230 /* Rx stats */ 231 u64 hw_csum_err; 232 u64 hw_csum_good; 233 u64 rx_hdr_split; 234 u32 alloc_rx_buff_failed; 235 u32 rx_dma_failed; 236 237 unsigned int rx_ps_hdr_size; 238 u32 max_frame_size; 239 u32 min_frame_size; 240 241 /* OS defined structs */ 242 struct net_device *netdev; 243 struct pci_dev *pdev; 244 struct net_device_stats net_stats; 245 spinlock_t stats_lock; /* prevent concurrent stats updates */ 246 247 /* structs defined in e1000_hw.h */ 248 struct e1000_hw hw; 249 250 /* The VF counters don't clear on read so we have to get a base 251 * count on driver start up and always subtract that base on 252 * on the first update, thus the flag.. 253 */ 254 struct e1000_vf_stats stats; 255 u64 zero_base; 256 257 struct igbvf_ring test_tx_ring; 258 struct igbvf_ring test_rx_ring; 259 u32 test_icr; 260 261 u32 msg_enable; 262 struct msix_entry *msix_entries; 263 int int_mode; 264 u32 eims_enable_mask; 265 u32 eims_other; 266 u32 int_counter0; 267 u32 int_counter1; 268 269 u32 eeprom_wol; 270 u32 wol; 271 u32 pba; 272 273 bool fc_autoneg; 274 275 unsigned long led_status; 276 277 unsigned int flags; 278 unsigned long last_reset; 279 }; 280 281 struct igbvf_info { 282 enum e1000_mac_type mac; 283 unsigned int flags; 284 u32 pba; 285 void (*init_ops)(struct e1000_hw *); 286 s32 (*get_variants)(struct igbvf_adapter *); 287 }; 288 289 /* hardware capability, feature, and workaround flags */ 290 #define IGBVF_FLAG_RX_CSUM_DISABLED (1 << 0) 291 #define IGBVF_FLAG_RX_LB_VLAN_BSWAP (1 << 1) 292 #define IGBVF_RX_DESC_ADV(R, i) \ 293 (&((((R).desc))[i].rx_desc)) 294 #define IGBVF_TX_DESC_ADV(R, i) \ 295 (&((((R).desc))[i].tx_desc)) 296 #define IGBVF_TX_CTXTDESC_ADV(R, i) \ 297 (&((((R).desc))[i].tx_context_desc)) 298 299 enum igbvf_state_t { 300 __IGBVF_TESTING, 301 __IGBVF_RESETTING, 302 __IGBVF_DOWN 303 }; 304 305 extern char igbvf_driver_name[]; 306 extern const char igbvf_driver_version[]; 307 308 void igbvf_check_options(struct igbvf_adapter *); 309 void igbvf_set_ethtool_ops(struct net_device *); 310 311 int igbvf_up(struct igbvf_adapter *); 312 void igbvf_down(struct igbvf_adapter *); 313 void igbvf_reinit_locked(struct igbvf_adapter *); 314 int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *); 315 int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *); 316 void igbvf_free_rx_resources(struct igbvf_ring *); 317 void igbvf_free_tx_resources(struct igbvf_ring *); 318 void igbvf_update_stats(struct igbvf_adapter *); 319 320 extern unsigned int copybreak; 321 322 #endif /* _IGBVF_H_ */ 323