1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 1999 - 2006 Intel Corporation. */
4 /* Linux PRO/1000 Ethernet Driver main header file */
9 #include <linux/stddef.h>
10 #include <linux/module.h>
11 #include <linux/types.h>
12 #include <asm/byteorder.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>
32 #include <linux/capability.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>
49 #define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
50 PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
56 #define E1000_MAX_INTR 10
59 * Count for polling __E1000_RESET condition every 10-20msec.
61 #define E1000_CHECK_RESET_COUNT 50
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
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
74 #define E1000_MIN_ITR_USECS 10 /* 100000 irq/sec */
75 #define E1000_MAX_ITR_USECS 10000 /* 100 irq/sec */
77 /* this is the size past which hardware will drop packets when setting LPE=0 */
78 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
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
90 /* SmartSpeed delimiters */
91 #define E1000_SMARTSPEED_DOWNSHIFT 3
92 #define E1000_SMARTSPEED_MAX 15
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
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 */
103 #define E1000_FC_PAUSE_TIME 0xFFFF /* pause for the max or until send xon */
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 */
110 #define AUTO_ALL_MODES 0
111 #define E1000_EEPROM_82544_APM 0x0004
112 #define E1000_EEPROM_APME 0x0400
114 #ifndef E1000_MASTER_SLAVE
115 /* Switch to override PHY master/slave setting */
116 #define E1000_MASTER_SLAVE e1000_ms_hw_default
119 #define E1000_MNG_VLAN_NONE (-1)
121 /* wrapper around a pointer to a socket buffer,
122 * so a DMA handle can be stored along with the buffer
124 struct e1000_tx_buffer {
127 unsigned long time_stamp;
132 unsigned int bytecount;
135 struct e1000_rx_buffer {
137 struct page *page; /* jumbo: alloc_page */
138 u8 *data; /* else, netdev_alloc_frag */
143 struct e1000_tx_ring {
144 /* pointer to the descriptor ring memory */
146 /* physical address of the descriptor ring */
148 /* length of descriptor ring in bytes */
150 /* number of descriptors in the ring */
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;
164 struct e1000_rx_ring {
165 /* pointer to the descriptor ring memory */
167 /* physical address of the descriptor ring */
169 /* length of descriptor ring in bytes */
171 /* number of descriptors in the ring */
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;
181 /* cpu for rx queue */
188 #define E1000_DESC_UNUSED(R) \
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; \
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)
202 /* board specific private data structure */
204 struct e1000_adapter {
205 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
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 */
228 struct e1000_tx_ring *tx_ring; /* One per active queue */
229 unsigned int restart_queue;
232 u32 tx_abs_int_delay;
237 u32 tx_timeout_count;
241 u8 tx_timeout_factor;
242 atomic_t tx_fifo_stall;
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,
254 struct e1000_rx_ring *rx_ring; /* One per active queue */
255 struct napi_struct napi;
262 u32 alloc_rx_buff_failed;
264 u32 rx_abs_int_delay;
269 /* OS defined structs */
270 struct net_device *netdev;
271 struct pci_dev *pdev;
273 /* structs defined in e1000_hw.h */
275 struct e1000_hw_stats stats;
276 struct e1000_phy_info phy_info;
277 struct e1000_phy_stats phy_stats;
280 struct e1000_tx_ring test_tx_ring;
281 struct e1000_rx_ring test_rx_ring;
285 /* to not mess up cache alignment, always add to the bottom */
287 bool smart_power_down; /* phy smart power down */
292 /* for ioport free */
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;
312 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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)
332 extern char e1000_driver_name[];
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 char *e1000_get_hw_dev_name(struct e1000_hw *hw);
352 #endif /* _E1000_H_ */