Loading...
1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright(c) 2009 - 2018 Intel Corporation. */
3
4/* Linux PRO/1000 Ethernet Driver main header file */
5
6#ifndef _IGBVF_H_
7#define _IGBVF_H_
8
9#include <linux/types.h>
10#include <linux/timer.h>
11#include <linux/io.h>
12#include <linux/netdevice.h>
13#include <linux/if_vlan.h>
14
15#include "vf.h"
16
17/* Forward declarations */
18struct igbvf_info;
19struct igbvf_adapter;
20
21/* Interrupt defines */
22#define IGBVF_START_ITR 488 /* ~8000 ints/sec */
23#define IGBVF_4K_ITR 980
24#define IGBVF_20K_ITR 196
25#define IGBVF_70K_ITR 56
26
27enum latency_range {
28 lowest_latency = 0,
29 low_latency = 1,
30 bulk_latency = 2,
31 latency_invalid = 255
32};
33
34/* Interrupt modes, as used by the IntMode parameter */
35#define IGBVF_INT_MODE_LEGACY 0
36#define IGBVF_INT_MODE_MSI 1
37#define IGBVF_INT_MODE_MSIX 2
38
39/* Tx/Rx descriptor defines */
40#define IGBVF_DEFAULT_TXD 256
41#define IGBVF_MAX_TXD 4096
42#define IGBVF_MIN_TXD 64
43
44#define IGBVF_DEFAULT_RXD 256
45#define IGBVF_MAX_RXD 4096
46#define IGBVF_MIN_RXD 64
47
48#define IGBVF_MIN_ITR_USECS 10 /* 100000 irq/sec */
49#define IGBVF_MAX_ITR_USECS 10000 /* 100 irq/sec */
50
51/* RX descriptor control thresholds.
52 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
53 * descriptors available in its onboard memory.
54 * Setting this to 0 disables RX descriptor prefetch.
55 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
56 * available in host memory.
57 * If PTHRESH is 0, this should also be 0.
58 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
59 * descriptors until either it has this many to write back, or the
60 * ITR timer expires.
61 */
62#define IGBVF_RX_PTHRESH 16
63#define IGBVF_RX_HTHRESH 8
64#define IGBVF_RX_WTHRESH 1
65
66/* this is the size past which hardware will drop packets when setting LPE=0 */
67#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
68
69#define IGBVF_FC_PAUSE_TIME 0x0680 /* 858 usec */
70
71/* How many Tx Descriptors do we need to call netif_wake_queue ? */
72#define IGBVF_TX_QUEUE_WAKE 32
73/* How many Rx Buffers do we bundle into one write to the hardware ? */
74#define IGBVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
75
76#define AUTO_ALL_MODES 0
77#define IGBVF_EEPROM_APME 0x0400
78
79#define IGBVF_MNG_VLAN_NONE (-1)
80
81#define IGBVF_MAX_MAC_FILTERS 3
82
83/* Number of packet split data buffers (not including the header buffer) */
84#define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1)
85
86enum igbvf_boards {
87 board_vf,
88 board_i350_vf,
89};
90
91struct igbvf_queue_stats {
92 u64 packets;
93 u64 bytes;
94};
95
96/* wrappers around a pointer to a socket buffer,
97 * so a DMA handle can be stored along with the buffer
98 */
99struct igbvf_buffer {
100 dma_addr_t dma;
101 struct sk_buff *skb;
102 union {
103 /* Tx */
104 struct {
105 unsigned long time_stamp;
106 union e1000_adv_tx_desc *next_to_watch;
107 u16 length;
108 u16 mapped_as_page;
109 };
110 /* Rx */
111 struct {
112 struct page *page;
113 u64 page_dma;
114 unsigned int page_offset;
115 };
116 };
117};
118
119union igbvf_desc {
120 union e1000_adv_rx_desc rx_desc;
121 union e1000_adv_tx_desc tx_desc;
122 struct e1000_adv_tx_context_desc tx_context_desc;
123};
124
125struct igbvf_ring {
126 struct igbvf_adapter *adapter; /* backlink */
127 union igbvf_desc *desc; /* pointer to ring memory */
128 dma_addr_t dma; /* phys address of ring */
129 unsigned int size; /* length of ring in bytes */
130 unsigned int count; /* number of desc. in ring */
131
132 u16 next_to_use;
133 u16 next_to_clean;
134
135 u16 head;
136 u16 tail;
137
138 /* array of buffer information structs */
139 struct igbvf_buffer *buffer_info;
140 struct napi_struct napi;
141
142 char name[IFNAMSIZ + 5];
143 u32 eims_value;
144 u32 itr_val;
145 enum latency_range itr_range;
146 u16 itr_register;
147 int set_itr;
148
149 struct sk_buff *rx_skb_top;
150
151 struct igbvf_queue_stats stats;
152};
153
154/* board specific private data structure */
155struct igbvf_adapter {
156 struct timer_list watchdog_timer;
157 struct timer_list blink_timer;
158
159 struct work_struct reset_task;
160 struct work_struct watchdog_task;
161
162 const struct igbvf_info *ei;
163
164 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
165 u32 bd_number;
166 u32 rx_buffer_len;
167 u32 polling_interval;
168 u16 mng_vlan_id;
169 u16 link_speed;
170 u16 link_duplex;
171
172 spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
173
174 /* track device up/down/testing state */
175 unsigned long state;
176
177 /* Interrupt Throttle Rate */
178 u32 requested_itr; /* ints/sec or adaptive */
179 u32 current_itr; /* Actual ITR register value, not ints/sec */
180
181 /* Tx */
182 struct igbvf_ring *tx_ring /* One per active queue */
183 ____cacheline_aligned_in_smp;
184
185 unsigned int restart_queue;
186 u32 txd_cmd;
187
188 u32 tx_int_delay;
189 u32 tx_abs_int_delay;
190
191 unsigned int total_tx_bytes;
192 unsigned int total_tx_packets;
193 unsigned int total_rx_bytes;
194 unsigned int total_rx_packets;
195
196 /* Tx stats */
197 u32 tx_timeout_count;
198 u32 tx_fifo_head;
199 u32 tx_head_addr;
200 u32 tx_fifo_size;
201 u32 tx_dma_failed;
202
203 /* Rx */
204 struct igbvf_ring *rx_ring;
205
206 u32 rx_int_delay;
207 u32 rx_abs_int_delay;
208
209 /* Rx stats */
210 u64 hw_csum_err;
211 u64 hw_csum_good;
212 u64 rx_hdr_split;
213 u32 alloc_rx_buff_failed;
214 u32 rx_dma_failed;
215
216 unsigned int rx_ps_hdr_size;
217 u32 max_frame_size;
218 u32 min_frame_size;
219
220 /* OS defined structs */
221 struct net_device *netdev;
222 struct pci_dev *pdev;
223 spinlock_t stats_lock; /* prevent concurrent stats updates */
224
225 /* structs defined in e1000_hw.h */
226 struct e1000_hw hw;
227
228 /* The VF counters don't clear on read so we have to get a base
229 * count on driver start up and always subtract that base on
230 * the first update, thus the flag..
231 */
232 struct e1000_vf_stats stats;
233 u64 zero_base;
234
235 struct igbvf_ring test_tx_ring;
236 struct igbvf_ring test_rx_ring;
237 u32 test_icr;
238
239 u32 msg_enable;
240 struct msix_entry *msix_entries;
241 int int_mode;
242 u32 eims_enable_mask;
243 u32 eims_other;
244 u32 int_counter0;
245 u32 int_counter1;
246
247 u32 eeprom_wol;
248 u32 wol;
249 u32 pba;
250
251 bool fc_autoneg;
252
253 unsigned long led_status;
254
255 unsigned int flags;
256 unsigned long last_reset;
257};
258
259struct igbvf_info {
260 enum e1000_mac_type mac;
261 unsigned int flags;
262 u32 pba;
263 void (*init_ops)(struct e1000_hw *);
264 s32 (*get_variants)(struct igbvf_adapter *);
265};
266
267/* hardware capability, feature, and workaround flags */
268#define IGBVF_FLAG_RX_CSUM_DISABLED BIT(0)
269#define IGBVF_FLAG_RX_LB_VLAN_BSWAP BIT(1)
270#define IGBVF_RX_DESC_ADV(R, i) \
271 (&((((R).desc))[i].rx_desc))
272#define IGBVF_TX_DESC_ADV(R, i) \
273 (&((((R).desc))[i].tx_desc))
274#define IGBVF_TX_CTXTDESC_ADV(R, i) \
275 (&((((R).desc))[i].tx_context_desc))
276
277enum igbvf_state_t {
278 __IGBVF_TESTING,
279 __IGBVF_RESETTING,
280 __IGBVF_DOWN
281};
282
283extern char igbvf_driver_name[];
284
285void igbvf_check_options(struct igbvf_adapter *);
286void igbvf_set_ethtool_ops(struct net_device *);
287
288int igbvf_up(struct igbvf_adapter *);
289void igbvf_down(struct igbvf_adapter *);
290void igbvf_reinit_locked(struct igbvf_adapter *);
291int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *);
292int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *);
293void igbvf_free_rx_resources(struct igbvf_ring *);
294void igbvf_free_tx_resources(struct igbvf_ring *);
295void igbvf_update_stats(struct igbvf_adapter *);
296
297extern unsigned int copybreak;
298
299#endif /* _IGBVF_H_ */