1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright(c) 1999 - 2006 Intel Corporation. */ 3 4 /* Linux PRO/1000 Ethernet Driver main header file */ 5 6 #ifndef _E1000_H_ 7 #define _E1000_H_ 8 9 #include <linux/stddef.h> 10 #include <linux/module.h> 11 #include <linux/types.h> 12 #include <asm/byteorder.h> 13 #include <linux/mm.h> 14 #include <linux/errno.h> 15 #include <linux/ioport.h> 16 #include <linux/pci.h> 17 #include <linux/kernel.h> 18 #include <linux/netdevice.h> 19 #include <linux/etherdevice.h> 20 #include <linux/skbuff.h> 21 #include <linux/delay.h> 22 #include <linux/timer.h> 23 #include <linux/slab.h> 24 #include <linux/vmalloc.h> 25 #include <linux/interrupt.h> 26 #include <linux/string.h> 27 #include <linux/pagemap.h> 28 #include <linux/dma-mapping.h> 29 #include <linux/bitops.h> 30 #include <asm/io.h> 31 #include <asm/irq.h> 32 #include <linux/capability.h> 33 #include <linux/in.h> 34 #include <linux/ip.h> 35 #include <linux/ipv6.h> 36 #include <linux/tcp.h> 37 #include <linux/udp.h> 38 #include <net/pkt_sched.h> 39 #include <linux/list.h> 40 #include <linux/reboot.h> 41 #include <net/checksum.h> 42 #include <linux/mii.h> 43 #include <linux/ethtool.h> 44 #include <linux/if_vlan.h> 45 46 #define BAR_0 0 47 #define BAR_1 1 48 49 #define INTEL_E1000_ETHERNET_DEVICE(device_id) {\ 50 PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} 51 52 struct e1000_adapter; 53 54 #include "e1000_hw.h" 55 56 #define E1000_MAX_INTR 10 57 58 /* 59 * Count for polling __E1000_RESET condition every 10-20msec. 60 */ 61 #define E1000_CHECK_RESET_COUNT 50 62 63 /* TX/RX descriptor defines */ 64 #define E1000_DEFAULT_TXD 256 65 #define E1000_MAX_TXD 256 66 #define E1000_MIN_TXD 48 67 #define E1000_MAX_82544_TXD 4096 68 69 #define E1000_DEFAULT_RXD 256 70 #define E1000_MAX_RXD 256 71 #define E1000_MIN_RXD 48 72 #define E1000_MAX_82544_RXD 4096 73 74 #define E1000_MIN_ITR_USECS 10 /* 100000 irq/sec */ 75 #define E1000_MAX_ITR_USECS 10000 /* 100 irq/sec */ 76 77 /* this is the size past which hardware will drop packets when setting LPE=0 */ 78 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 79 80 /* Supported Rx Buffer Sizes */ 81 #define E1000_RXBUFFER_128 128 /* Used for packet split */ 82 #define E1000_RXBUFFER_256 256 /* Used for packet split */ 83 #define E1000_RXBUFFER_512 512 84 #define E1000_RXBUFFER_1024 1024 85 #define E1000_RXBUFFER_2048 2048 86 #define E1000_RXBUFFER_4096 4096 87 #define E1000_RXBUFFER_8192 8192 88 #define E1000_RXBUFFER_16384 16384 89 90 /* SmartSpeed delimiters */ 91 #define E1000_SMARTSPEED_DOWNSHIFT 3 92 #define E1000_SMARTSPEED_MAX 15 93 94 /* Packet Buffer allocations */ 95 #define E1000_PBA_BYTES_SHIFT 0xA 96 #define E1000_TX_HEAD_ADDR_SHIFT 7 97 #define E1000_PBA_TX_MASK 0xFFFF0000 98 99 /* Flow Control Watermarks */ 100 #define E1000_FC_HIGH_DIFF 0x1638 /* High: 5688 bytes below Rx FIFO size */ 101 #define E1000_FC_LOW_DIFF 0x1640 /* Low: 5696 bytes below Rx FIFO size */ 102 103 #define E1000_FC_PAUSE_TIME 0xFFFF /* pause for the max or until send xon */ 104 105 /* How many Tx Descriptors do we need to call netif_wake_queue ? */ 106 #define E1000_TX_QUEUE_WAKE 16 107 /* How many Rx Buffers do we bundle into one write to the hardware ? */ 108 #define E1000_RX_BUFFER_WRITE 16 /* Must be power of 2 */ 109 110 #define AUTO_ALL_MODES 0 111 #define E1000_EEPROM_82544_APM 0x0004 112 #define E1000_EEPROM_APME 0x0400 113 114 #ifndef E1000_MASTER_SLAVE 115 /* Switch to override PHY master/slave setting */ 116 #define E1000_MASTER_SLAVE e1000_ms_hw_default 117 #endif 118 119 #define E1000_MNG_VLAN_NONE (-1) 120 121 /* wrapper around a pointer to a socket buffer, 122 * so a DMA handle can be stored along with the buffer 123 */ 124 struct e1000_tx_buffer { 125 struct sk_buff *skb; 126 dma_addr_t dma; 127 unsigned long time_stamp; 128 u16 length; 129 u16 next_to_watch; 130 bool mapped_as_page; 131 unsigned short segs; 132 unsigned int bytecount; 133 }; 134 135 struct e1000_rx_buffer { 136 union { 137 struct page *page; /* jumbo: alloc_page */ 138 u8 *data; /* else, netdev_alloc_frag */ 139 } rxbuf; 140 dma_addr_t dma; 141 }; 142 143 struct e1000_tx_ring { 144 /* pointer to the descriptor ring memory */ 145 void *desc; 146 /* physical address of the descriptor ring */ 147 dma_addr_t dma; 148 /* length of descriptor ring in bytes */ 149 unsigned int size; 150 /* number of descriptors in the ring */ 151 unsigned int count; 152 /* next descriptor to associate a buffer with */ 153 unsigned int next_to_use; 154 /* next descriptor to check for DD status bit */ 155 unsigned int next_to_clean; 156 /* array of buffer information structs */ 157 struct e1000_tx_buffer *buffer_info; 158 159 u16 tdh; 160 u16 tdt; 161 bool last_tx_tso; 162 }; 163 164 struct e1000_rx_ring { 165 /* pointer to the descriptor ring memory */ 166 void *desc; 167 /* physical address of the descriptor ring */ 168 dma_addr_t dma; 169 /* length of descriptor ring in bytes */ 170 unsigned int size; 171 /* number of descriptors in the ring */ 172 unsigned int count; 173 /* next descriptor to associate a buffer with */ 174 unsigned int next_to_use; 175 /* next descriptor to check for DD status bit */ 176 unsigned int next_to_clean; 177 /* array of buffer information structs */ 178 struct e1000_rx_buffer *buffer_info; 179 struct sk_buff *rx_skb_top; 180 181 /* cpu for rx queue */ 182 int cpu; 183 184 u16 rdh; 185 u16 rdt; 186 }; 187 188 #define E1000_DESC_UNUSED(R) \ 189 ({ \ 190 unsigned int clean = smp_load_acquire(&(R)->next_to_clean); \ 191 unsigned int use = READ_ONCE((R)->next_to_use); \ 192 (clean > use ? 0 : (R)->count) + clean - use - 1; \ 193 }) 194 195 #define E1000_RX_DESC_EXT(R, i) \ 196 (&(((union e1000_rx_desc_extended *)((R).desc))[i])) 197 #define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i])) 198 #define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc) 199 #define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc) 200 #define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc) 201 202 /* board specific private data structure */ 203 204 struct e1000_adapter { 205 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; 206 u16 mng_vlan_id; 207 u32 bd_number; 208 u32 rx_buffer_len; 209 u32 wol; 210 u32 smartspeed; 211 u32 en_mng_pt; 212 u16 link_speed; 213 u16 link_duplex; 214 spinlock_t stats_lock; 215 unsigned int total_tx_bytes; 216 unsigned int total_tx_packets; 217 unsigned int total_rx_bytes; 218 unsigned int total_rx_packets; 219 /* Interrupt Throttle Rate */ 220 u32 itr; 221 u32 itr_setting; 222 u16 tx_itr; 223 u16 rx_itr; 224 225 u8 fc_autoneg; 226 227 /* TX */ 228 struct e1000_tx_ring *tx_ring; /* One per active queue */ 229 unsigned int restart_queue; 230 u32 txd_cmd; 231 u32 tx_int_delay; 232 u32 tx_abs_int_delay; 233 u32 gotcl; 234 u64 gotcl_old; 235 u64 tpt_old; 236 u64 colc_old; 237 u32 tx_timeout_count; 238 u32 tx_fifo_head; 239 u32 tx_head_addr; 240 u32 tx_fifo_size; 241 u8 tx_timeout_factor; 242 atomic_t tx_fifo_stall; 243 bool pcix_82544; 244 bool detect_tx_hung; 245 bool dump_buffers; 246 247 /* RX */ 248 bool (*clean_rx)(struct e1000_adapter *adapter, 249 struct e1000_rx_ring *rx_ring, 250 int *work_done, int work_to_do); 251 void (*alloc_rx_buf)(struct e1000_adapter *adapter, 252 struct e1000_rx_ring *rx_ring, 253 int cleaned_count); 254 struct e1000_rx_ring *rx_ring; /* One per active queue */ 255 struct napi_struct napi; 256 257 int num_tx_queues; 258 int num_rx_queues; 259 260 u64 hw_csum_err; 261 u64 hw_csum_good; 262 u32 alloc_rx_buff_failed; 263 u32 rx_int_delay; 264 u32 rx_abs_int_delay; 265 bool rx_csum; 266 u32 gorcl; 267 u64 gorcl_old; 268 269 /* OS defined structs */ 270 struct net_device *netdev; 271 struct pci_dev *pdev; 272 273 /* structs defined in e1000_hw.h */ 274 struct e1000_hw hw; 275 struct e1000_hw_stats stats; 276 struct e1000_phy_info phy_info; 277 struct e1000_phy_stats phy_stats; 278 279 u32 test_icr; 280 struct e1000_tx_ring test_tx_ring; 281 struct e1000_rx_ring test_rx_ring; 282 283 int msg_enable; 284 285 /* to not mess up cache alignment, always add to the bottom */ 286 bool tso_force; 287 bool smart_power_down; /* phy smart power down */ 288 bool quad_port_a; 289 unsigned long flags; 290 u32 eeprom_wol; 291 292 /* for ioport free */ 293 int bars; 294 int need_ioport; 295 296 bool discarding; 297 298 struct work_struct reset_task; 299 struct delayed_work watchdog_task; 300 struct delayed_work fifo_stall_task; 301 struct delayed_work phy_info_task; 302 }; 303 304 enum e1000_state_t { 305 __E1000_TESTING, 306 __E1000_RESETTING, 307 __E1000_DOWN, 308 __E1000_DISABLED 309 }; 310 311 #undef pr_fmt 312 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 313 314 struct net_device *e1000_get_hw_dev(struct e1000_hw *hw); 315 #define e_dbg(format, arg...) \ 316 netdev_dbg(e1000_get_hw_dev(hw), format, ## arg) 317 #define e_err(msglvl, format, arg...) \ 318 netif_err(adapter, msglvl, adapter->netdev, format, ## arg) 319 #define e_info(msglvl, format, arg...) \ 320 netif_info(adapter, msglvl, adapter->netdev, format, ## arg) 321 #define e_warn(msglvl, format, arg...) \ 322 netif_warn(adapter, msglvl, adapter->netdev, format, ## arg) 323 #define e_notice(msglvl, format, arg...) \ 324 netif_notice(adapter, msglvl, adapter->netdev, format, ## arg) 325 #define e_dev_info(format, arg...) \ 326 dev_info(&adapter->pdev->dev, format, ## arg) 327 #define e_dev_warn(format, arg...) \ 328 dev_warn(&adapter->pdev->dev, format, ## arg) 329 #define e_dev_err(format, arg...) \ 330 dev_err(&adapter->pdev->dev, format, ## arg) 331 332 extern char e1000_driver_name[]; 333 334 int e1000_open(struct net_device *netdev); 335 int e1000_close(struct net_device *netdev); 336 int e1000_up(struct e1000_adapter *adapter); 337 void e1000_down(struct e1000_adapter *adapter); 338 void e1000_reinit_locked(struct e1000_adapter *adapter); 339 void e1000_reset(struct e1000_adapter *adapter); 340 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx); 341 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); 342 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); 343 void e1000_free_all_rx_resources(struct e1000_adapter *adapter); 344 void e1000_free_all_tx_resources(struct e1000_adapter *adapter); 345 void e1000_update_stats(struct e1000_adapter *adapter); 346 bool e1000_has_link(struct e1000_adapter *adapter); 347 void e1000_power_up_phy(struct e1000_adapter *); 348 void e1000_set_ethtool_ops(struct net_device *netdev); 349 void e1000_check_options(struct e1000_adapter *adapter); 350 351 #endif /* _E1000_H_ */ 352