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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
52struct 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 */
124struct 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
135struct 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
143struct 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
164struct 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
204struct 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
304enum 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
314struct 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
332extern char e1000_driver_name[];
333
334int e1000_open(struct net_device *netdev);
335int e1000_close(struct net_device *netdev);
336int e1000_up(struct e1000_adapter *adapter);
337void e1000_down(struct e1000_adapter *adapter);
338void e1000_reinit_locked(struct e1000_adapter *adapter);
339void e1000_reset(struct e1000_adapter *adapter);
340int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx);
341int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
342int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
343void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
344void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
345void e1000_update_stats(struct e1000_adapter *adapter);
346bool e1000_has_link(struct e1000_adapter *adapter);
347void e1000_power_up_phy(struct e1000_adapter *);
348void e1000_set_ethtool_ops(struct net_device *netdev);
349void e1000_check_options(struct e1000_adapter *adapter);
350
351#endif /* _E1000_H_ */