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Salil76ad4f02017-08-02 16:59:45 +01001/*
2 * Copyright (c) 2016 Hisilicon Limited.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 */
9
10#ifndef __HNS3_ENET_H
11#define __HNS3_ENET_H
12
Yunsheng Lin681ec392018-03-21 15:49:22 +080013#include <linux/if_vlan.h>
14
Salil76ad4f02017-08-02 16:59:45 +010015#include "hnae3.h"
16
17extern const char hns3_driver_version[];
18
19enum hns3_nic_state {
20 HNS3_NIC_STATE_TESTING,
21 HNS3_NIC_STATE_RESETTING,
22 HNS3_NIC_STATE_REINITING,
23 HNS3_NIC_STATE_DOWN,
24 HNS3_NIC_STATE_DISABLED,
25 HNS3_NIC_STATE_REMOVING,
26 HNS3_NIC_STATE_SERVICE_INITED,
27 HNS3_NIC_STATE_SERVICE_SCHED,
28 HNS3_NIC_STATE2_RESET_REQUESTED,
29 HNS3_NIC_STATE_MAX
30};
31
32#define HNS3_RING_RX_RING_BASEADDR_L_REG 0x00000
33#define HNS3_RING_RX_RING_BASEADDR_H_REG 0x00004
34#define HNS3_RING_RX_RING_BD_NUM_REG 0x00008
35#define HNS3_RING_RX_RING_BD_LEN_REG 0x0000C
36#define HNS3_RING_RX_RING_TAIL_REG 0x00018
37#define HNS3_RING_RX_RING_HEAD_REG 0x0001C
38#define HNS3_RING_RX_RING_FBDNUM_REG 0x00020
39#define HNS3_RING_RX_RING_PKTNUM_RECORD_REG 0x0002C
40
41#define HNS3_RING_TX_RING_BASEADDR_L_REG 0x00040
42#define HNS3_RING_TX_RING_BASEADDR_H_REG 0x00044
43#define HNS3_RING_TX_RING_BD_NUM_REG 0x00048
44#define HNS3_RING_TX_RING_BD_LEN_REG 0x0004C
45#define HNS3_RING_TX_RING_TAIL_REG 0x00058
46#define HNS3_RING_TX_RING_HEAD_REG 0x0005C
47#define HNS3_RING_TX_RING_FBDNUM_REG 0x00060
48#define HNS3_RING_TX_RING_OFFSET_REG 0x00064
49#define HNS3_RING_TX_RING_PKTNUM_RECORD_REG 0x0006C
50
51#define HNS3_RING_PREFETCH_EN_REG 0x0007C
52#define HNS3_RING_CFG_VF_NUM_REG 0x00080
53#define HNS3_RING_ASID_REG 0x0008C
54#define HNS3_RING_RX_VM_REG 0x00090
55#define HNS3_RING_T0_BE_RST 0x00094
56#define HNS3_RING_COULD_BE_RST 0x00098
57#define HNS3_RING_WRR_WEIGHT_REG 0x0009c
58
59#define HNS3_RING_INTMSK_RXWL_REG 0x000A0
60#define HNS3_RING_INTSTS_RX_RING_REG 0x000A4
61#define HNS3_RX_RING_INT_STS_REG 0x000A8
62#define HNS3_RING_INTMSK_TXWL_REG 0x000AC
63#define HNS3_RING_INTSTS_TX_RING_REG 0x000B0
64#define HNS3_TX_RING_INT_STS_REG 0x000B4
65#define HNS3_RING_INTMSK_RX_OVERTIME_REG 0x000B8
66#define HNS3_RING_INTSTS_RX_OVERTIME_REG 0x000BC
67#define HNS3_RING_INTMSK_TX_OVERTIME_REG 0x000C4
68#define HNS3_RING_INTSTS_TX_OVERTIME_REG 0x000C8
69
70#define HNS3_RING_MB_CTRL_REG 0x00100
71#define HNS3_RING_MB_DATA_BASE_REG 0x00200
72
73#define HNS3_TX_REG_OFFSET 0x40
74
75#define HNS3_RX_HEAD_SIZE 256
76
77#define HNS3_TX_TIMEOUT (5 * HZ)
78#define HNS3_RING_NAME_LEN 16
79#define HNS3_BUFFER_SIZE_2048 2048
80#define HNS3_RING_MAX_PENDING 32768
Lipeng5668abd2017-10-10 16:42:04 +080081#define HNS3_RING_MIN_PENDING 8
82#define HNS3_RING_BD_MULTIPLE 8
Salila8e8b7f2017-08-21 17:05:24 +010083#define HNS3_MAX_MTU 9728
Salil76ad4f02017-08-02 16:59:45 +010084
85#define HNS3_BD_SIZE_512_TYPE 0
86#define HNS3_BD_SIZE_1024_TYPE 1
87#define HNS3_BD_SIZE_2048_TYPE 2
88#define HNS3_BD_SIZE_4096_TYPE 3
89
90#define HNS3_RX_FLAG_VLAN_PRESENT 0x1
91#define HNS3_RX_FLAG_L3ID_IPV4 0x0
92#define HNS3_RX_FLAG_L3ID_IPV6 0x1
93#define HNS3_RX_FLAG_L4ID_UDP 0x0
94#define HNS3_RX_FLAG_L4ID_TCP 0x1
95
96#define HNS3_RXD_DMAC_S 0
97#define HNS3_RXD_DMAC_M (0x3 << HNS3_RXD_DMAC_S)
98#define HNS3_RXD_VLAN_S 2
99#define HNS3_RXD_VLAN_M (0x3 << HNS3_RXD_VLAN_S)
100#define HNS3_RXD_L3ID_S 4
101#define HNS3_RXD_L3ID_M (0xf << HNS3_RXD_L3ID_S)
102#define HNS3_RXD_L4ID_S 8
103#define HNS3_RXD_L4ID_M (0xf << HNS3_RXD_L4ID_S)
104#define HNS3_RXD_FRAG_B 12
105#define HNS3_RXD_L2E_B 16
106#define HNS3_RXD_L3E_B 17
107#define HNS3_RXD_L4E_B 18
108#define HNS3_RXD_TRUNCAT_B 19
109#define HNS3_RXD_HOI_B 20
110#define HNS3_RXD_DOI_B 21
111#define HNS3_RXD_OL3E_B 22
112#define HNS3_RXD_OL4E_B 23
113
114#define HNS3_RXD_ODMAC_S 0
115#define HNS3_RXD_ODMAC_M (0x3 << HNS3_RXD_ODMAC_S)
116#define HNS3_RXD_OVLAN_S 2
117#define HNS3_RXD_OVLAN_M (0x3 << HNS3_RXD_OVLAN_S)
118#define HNS3_RXD_OL3ID_S 4
119#define HNS3_RXD_OL3ID_M (0xf << HNS3_RXD_OL3ID_S)
120#define HNS3_RXD_OL4ID_S 8
121#define HNS3_RXD_OL4ID_M (0xf << HNS3_RXD_OL4ID_S)
122#define HNS3_RXD_FBHI_S 12
123#define HNS3_RXD_FBHI_M (0x3 << HNS3_RXD_FBHI_S)
124#define HNS3_RXD_FBLI_S 14
125#define HNS3_RXD_FBLI_M (0x3 << HNS3_RXD_FBLI_S)
126
127#define HNS3_RXD_BDTYPE_S 0
128#define HNS3_RXD_BDTYPE_M (0xf << HNS3_RXD_BDTYPE_S)
129#define HNS3_RXD_VLD_B 4
130#define HNS3_RXD_UDP0_B 5
131#define HNS3_RXD_EXTEND_B 7
132#define HNS3_RXD_FE_B 8
133#define HNS3_RXD_LUM_B 9
134#define HNS3_RXD_CRCP_B 10
135#define HNS3_RXD_L3L4P_B 11
136#define HNS3_RXD_TSIND_S 12
137#define HNS3_RXD_TSIND_M (0x7 << HNS3_RXD_TSIND_S)
138#define HNS3_RXD_LKBK_B 15
139#define HNS3_RXD_HDL_S 16
140#define HNS3_RXD_HDL_M (0x7ff << HNS3_RXD_HDL_S)
141#define HNS3_RXD_HSIND_B 31
142
143#define HNS3_TXD_L3T_S 0
144#define HNS3_TXD_L3T_M (0x3 << HNS3_TXD_L3T_S)
145#define HNS3_TXD_L4T_S 2
146#define HNS3_TXD_L4T_M (0x3 << HNS3_TXD_L4T_S)
147#define HNS3_TXD_L3CS_B 4
148#define HNS3_TXD_L4CS_B 5
149#define HNS3_TXD_VLAN_B 6
150#define HNS3_TXD_TSO_B 7
151
152#define HNS3_TXD_L2LEN_S 8
153#define HNS3_TXD_L2LEN_M (0xff << HNS3_TXD_L2LEN_S)
154#define HNS3_TXD_L3LEN_S 16
155#define HNS3_TXD_L3LEN_M (0xff << HNS3_TXD_L3LEN_S)
156#define HNS3_TXD_L4LEN_S 24
157#define HNS3_TXD_L4LEN_M (0xff << HNS3_TXD_L4LEN_S)
158
159#define HNS3_TXD_OL3T_S 0
160#define HNS3_TXD_OL3T_M (0x3 << HNS3_TXD_OL3T_S)
161#define HNS3_TXD_OVLAN_B 2
162#define HNS3_TXD_MACSEC_B 3
163#define HNS3_TXD_TUNTYPE_S 4
164#define HNS3_TXD_TUNTYPE_M (0xf << HNS3_TXD_TUNTYPE_S)
165
166#define HNS3_TXD_BDTYPE_S 0
167#define HNS3_TXD_BDTYPE_M (0xf << HNS3_TXD_BDTYPE_S)
168#define HNS3_TXD_FE_B 4
169#define HNS3_TXD_SC_S 5
170#define HNS3_TXD_SC_M (0x3 << HNS3_TXD_SC_S)
171#define HNS3_TXD_EXTEND_B 7
172#define HNS3_TXD_VLD_B 8
173#define HNS3_TXD_RI_B 9
174#define HNS3_TXD_RA_B 10
175#define HNS3_TXD_TSYN_B 11
176#define HNS3_TXD_DECTTL_S 12
177#define HNS3_TXD_DECTTL_M (0xf << HNS3_TXD_DECTTL_S)
178
179#define HNS3_TXD_MSS_S 0
180#define HNS3_TXD_MSS_M (0x3fff << HNS3_TXD_MSS_S)
181
182#define HNS3_VECTOR_TX_IRQ BIT_ULL(0)
183#define HNS3_VECTOR_RX_IRQ BIT_ULL(1)
184
185#define HNS3_VECTOR_NOT_INITED 0
186#define HNS3_VECTOR_INITED 1
187
188#define HNS3_MAX_BD_SIZE 65535
189#define HNS3_MAX_BD_PER_FRAG 8
190#define HNS3_MAX_BD_PER_PKT MAX_SKB_FRAGS
191
192#define HNS3_VECTOR_GL0_OFFSET 0x100
193#define HNS3_VECTOR_GL1_OFFSET 0x200
194#define HNS3_VECTOR_GL2_OFFSET 0x300
195#define HNS3_VECTOR_RL_OFFSET 0x900
196#define HNS3_VECTOR_RL_EN_B 6
197
198enum hns3_pkt_l3t_type {
199 HNS3_L3T_NONE,
200 HNS3_L3T_IPV6,
201 HNS3_L3T_IPV4,
202 HNS3_L3T_RESERVED
203};
204
205enum hns3_pkt_l4t_type {
206 HNS3_L4T_UNKNOWN,
207 HNS3_L4T_TCP,
208 HNS3_L4T_UDP,
209 HNS3_L4T_SCTP
210};
211
212enum hns3_pkt_ol3t_type {
213 HNS3_OL3T_NONE,
214 HNS3_OL3T_IPV6,
215 HNS3_OL3T_IPV4_NO_CSUM,
216 HNS3_OL3T_IPV4_CSUM
217};
218
219enum hns3_pkt_tun_type {
220 HNS3_TUN_NONE,
221 HNS3_TUN_MAC_IN_UDP,
222 HNS3_TUN_NVGRE,
223 HNS3_TUN_OTHER
224};
225
226/* hardware spec ring buffer format */
227struct __packed hns3_desc {
228 __le64 addr;
229 union {
230 struct {
231 __le16 vlan_tag;
232 __le16 send_size;
233 union {
234 __le32 type_cs_vlan_tso_len;
235 struct {
236 __u8 type_cs_vlan_tso;
237 __u8 l2_len;
238 __u8 l3_len;
239 __u8 l4_len;
240 };
241 };
242 __le16 outer_vlan_tag;
243 __le16 tv;
244
245 union {
246 __le32 ol_type_vlan_len_msec;
247 struct {
248 __u8 ol_type_vlan_msec;
249 __u8 ol2_len;
250 __u8 ol3_len;
251 __u8 ol4_len;
252 };
253 };
254
255 __le32 paylen;
256 __le16 bdtp_fe_sc_vld_ra_ri;
257 __le16 mss;
258 } tx;
259
260 struct {
261 __le32 l234_info;
262 __le16 pkt_len;
263 __le16 size;
264
265 __le32 rss_hash;
266 __le16 fd_id;
267 __le16 vlan_tag;
268
269 union {
270 __le32 ol_info;
271 struct {
272 __le16 o_dm_vlan_id_fb;
273 __le16 ot_vlan_tag;
274 };
275 };
276
277 __le32 bd_base_info;
278 } rx;
279 };
280};
281
282struct hns3_desc_cb {
283 dma_addr_t dma; /* dma address of this desc */
284 void *buf; /* cpu addr for a desc */
285
286 /* priv data for the desc, e.g. skb when use with ip stack*/
287 void *priv;
288 u16 page_offset;
289 u16 reuse_flag;
290
291 u16 length; /* length of the buffer */
292
293 /* desc type, used by the ring user to mark the type of the priv data */
294 u16 type;
295};
296
297enum hns3_pkt_l3type {
298 HNS3_L3_TYPE_IPV4,
299 HNS3_L3_TYPE_IPV6,
300 HNS3_L3_TYPE_ARP,
301 HNS3_L3_TYPE_RARP,
302 HNS3_L3_TYPE_IPV4_OPT,
303 HNS3_L3_TYPE_IPV6_EXT,
304 HNS3_L3_TYPE_LLDP,
305 HNS3_L3_TYPE_BPDU,
306 HNS3_L3_TYPE_MAC_PAUSE,
307 HNS3_L3_TYPE_PFC_PAUSE,/* 0x9*/
308
309 /* reserved for 0xA~0xB*/
310
311 HNS3_L3_TYPE_CNM = 0xc,
312
313 /* reserved for 0xD~0xE*/
314
315 HNS3_L3_TYPE_PARSE_FAIL = 0xf /* must be last */
316};
317
318enum hns3_pkt_l4type {
319 HNS3_L4_TYPE_UDP,
320 HNS3_L4_TYPE_TCP,
321 HNS3_L4_TYPE_GRE,
322 HNS3_L4_TYPE_SCTP,
323 HNS3_L4_TYPE_IGMP,
324 HNS3_L4_TYPE_ICMP,
325
326 /* reserved for 0x6~0xE */
327
328 HNS3_L4_TYPE_PARSE_FAIL = 0xf /* must be last */
329};
330
331enum hns3_pkt_ol3type {
332 HNS3_OL3_TYPE_IPV4 = 0,
333 HNS3_OL3_TYPE_IPV6,
334 /* reserved for 0x2~0x3 */
335 HNS3_OL3_TYPE_IPV4_OPT = 4,
336 HNS3_OL3_TYPE_IPV6_EXT,
337
338 /* reserved for 0x6~0xE*/
339
340 HNS3_OL3_TYPE_PARSE_FAIL = 0xf /* must be last */
341};
342
343enum hns3_pkt_ol4type {
344 HNS3_OL4_TYPE_NO_TUN,
345 HNS3_OL4_TYPE_MAC_IN_UDP,
346 HNS3_OL4_TYPE_NVGRE,
347 HNS3_OL4_TYPE_UNKNOWN
348};
349
350struct ring_stats {
351 u64 io_err_cnt;
352 u64 sw_err_cnt;
353 u64 seg_pkt_cnt;
354 union {
355 struct {
356 u64 tx_pkts;
357 u64 tx_bytes;
358 u64 tx_err_cnt;
359 u64 restart_queue;
360 u64 tx_busy;
361 };
362 struct {
363 u64 rx_pkts;
364 u64 rx_bytes;
365 u64 rx_err_cnt;
366 u64 reuse_pg_cnt;
367 u64 err_pkt_len;
368 u64 non_vld_descs;
369 u64 err_bd_num;
370 u64 l2_err;
371 u64 l3l4_csum_err;
372 };
373 };
374};
375
376struct hns3_enet_ring {
377 u8 __iomem *io_base; /* base io address for the ring */
378 struct hns3_desc *desc; /* dma map address space */
379 struct hns3_desc_cb *desc_cb;
380 struct hns3_enet_ring *next;
381 struct hns3_enet_tqp_vector *tqp_vector;
382 struct hnae3_queue *tqp;
383 char ring_name[HNS3_RING_NAME_LEN];
384 struct device *dev; /* will be used for DMA mapping of descriptors */
385
386 /* statistic */
387 struct ring_stats stats;
388 struct u64_stats_sync syncp;
389
390 dma_addr_t desc_dma_addr;
391 u32 buf_size; /* size for hnae_desc->addr, preset by AE */
392 u16 desc_num; /* total number of desc */
393 u16 max_desc_num_per_pkt;
394 u16 max_raw_data_sz_per_desc;
395 u16 max_pkt_size;
396 int next_to_use; /* idx of next spare desc */
397
398 /* idx of lastest sent desc, the ring is empty when equal to
399 * next_to_use
400 */
401 int next_to_clean;
402
403 u32 flag; /* ring attribute */
404 int irq_init_flag;
405
406 int numa_node;
407 cpumask_t affinity_mask;
408};
409
410struct hns_queue;
411
412struct hns3_nic_ring_data {
413 struct hns3_enet_ring *ring;
414 struct napi_struct napi;
415 int queue_index;
416 int (*poll_one)(struct hns3_nic_ring_data *, int, void *);
417 void (*ex_process)(struct hns3_nic_ring_data *, struct sk_buff *);
418 void (*fini_process)(struct hns3_nic_ring_data *);
419};
420
421struct hns3_nic_ops {
422 int (*fill_desc)(struct hns3_enet_ring *ring, void *priv,
423 int size, dma_addr_t dma, int frag_end,
424 enum hns_desc_type type);
425 int (*maybe_stop_tx)(struct sk_buff **out_skb,
426 int *bnum, struct hns3_enet_ring *ring);
427 void (*get_rxd_bnum)(u32 bnum_flag, int *out_bnum);
428};
429
430enum hns3_flow_level_range {
431 HNS3_FLOW_LOW = 0,
432 HNS3_FLOW_MID = 1,
433 HNS3_FLOW_HIGH = 2,
434 HNS3_FLOW_ULTRA = 3,
435};
436
437enum hns3_link_mode_bits {
438 HNS3_LM_FIBRE_BIT = BIT(0),
439 HNS3_LM_AUTONEG_BIT = BIT(1),
440 HNS3_LM_TP_BIT = BIT(2),
441 HNS3_LM_PAUSE_BIT = BIT(3),
442 HNS3_LM_BACKPLANE_BIT = BIT(4),
443 HNS3_LM_10BASET_HALF_BIT = BIT(5),
444 HNS3_LM_10BASET_FULL_BIT = BIT(6),
445 HNS3_LM_100BASET_HALF_BIT = BIT(7),
446 HNS3_LM_100BASET_FULL_BIT = BIT(8),
447 HNS3_LM_1000BASET_FULL_BIT = BIT(9),
448 HNS3_LM_10000BASEKR_FULL_BIT = BIT(10),
449 HNS3_LM_25000BASEKR_FULL_BIT = BIT(11),
450 HNS3_LM_40000BASELR4_FULL_BIT = BIT(12),
451 HNS3_LM_50000BASEKR2_FULL_BIT = BIT(13),
452 HNS3_LM_100000BASEKR4_FULL_BIT = BIT(14),
453 HNS3_LM_COUNT = 15
454};
455
Fuyun Liang434776a2018-01-12 16:23:10 +0800456#define HNS3_INT_GL_MAX 0x1FE0
Fuyun Liangb81c59e2018-01-12 16:23:14 +0800457#define HNS3_INT_GL_50K 0x0014
458#define HNS3_INT_GL_20K 0x0032
459#define HNS3_INT_GL_18K 0x0036
460#define HNS3_INT_GL_8K 0x007C
Salil76ad4f02017-08-02 16:59:45 +0100461
Fuyun Liang434776a2018-01-12 16:23:10 +0800462#define HNS3_INT_RL_MAX 0x00EC
463#define HNS3_INT_RL_ENABLE_MASK 0x40
464
Fuyun Liangcd9d1872018-03-21 15:49:25 +0800465#define HNS3_INT_ADAPT_DOWN_START 100
466
Yunsheng Lin9bc727a2018-03-09 10:37:03 +0800467struct hns3_enet_coalesce {
468 u16 int_gl;
469 u8 gl_adapt_enable;
470 enum hns3_flow_level_range flow_level;
471};
472
Salil76ad4f02017-08-02 16:59:45 +0100473struct hns3_enet_ring_group {
474 /* array of pointers to rings */
475 struct hns3_enet_ring *ring;
476 u64 total_bytes; /* total bytes processed this group */
477 u64 total_packets; /* total packets processed this group */
478 u16 count;
Yunsheng Lin9bc727a2018-03-09 10:37:03 +0800479 struct hns3_enet_coalesce coal;
Salil76ad4f02017-08-02 16:59:45 +0100480};
481
482struct hns3_enet_tqp_vector {
483 struct hnae3_handle *handle;
484 u8 __iomem *mask_addr;
485 int vector_irq;
486 int irq_init_flag;
487
488 u16 idx; /* index in the TQP vector array per handle. */
489
490 struct napi_struct napi;
491
492 struct hns3_enet_ring_group rx_group;
493 struct hns3_enet_ring_group tx_group;
494
495 u16 num_tqps; /* total number of tqps in TQP vector */
496
497 cpumask_t affinity_mask;
498 char name[HNAE3_INT_NAME_LEN];
499
500 /* when 0 should adjust interrupt coalesce parameter */
501 u8 int_adapt_down;
Fuyun Lianga95e1f82018-03-21 15:49:26 +0800502 unsigned long last_jiffies;
Salil76ad4f02017-08-02 16:59:45 +0100503} ____cacheline_internodealigned_in_smp;
504
505enum hns3_udp_tnl_type {
506 HNS3_UDP_TNL_VXLAN,
507 HNS3_UDP_TNL_GENEVE,
508 HNS3_UDP_TNL_MAX,
509};
510
511struct hns3_udp_tunnel {
512 u16 dst_port;
513 int used;
514};
515
516struct hns3_nic_priv {
517 struct hnae3_handle *ae_handle;
518 u32 enet_ver;
519 u32 port_id;
520 struct net_device *netdev;
521 struct device *dev;
522 struct hns3_nic_ops ops;
523
524 /**
525 * the cb for nic to manage the ring buffer, the first half of the
526 * array is for tx_ring and vice versa for the second half
527 */
528 struct hns3_nic_ring_data *ring_data;
529 struct hns3_enet_tqp_vector *tqp_vector;
530 u16 vector_num;
531
532 /* The most recently read link state */
533 int link;
534 u64 tx_timeout_count;
535
536 unsigned long state;
537
538 struct timer_list service_timer;
539
540 struct work_struct service_task;
541
542 struct notifier_block notifier_block;
543 /* Vxlan/Geneve information */
544 struct hns3_udp_tunnel udp_tnl[HNS3_UDP_TNL_MAX];
Yunsheng Lin681ec392018-03-21 15:49:22 +0800545 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
Salil76ad4f02017-08-02 16:59:45 +0100546};
547
548union l3_hdr_info {
549 struct iphdr *v4;
550 struct ipv6hdr *v6;
551 unsigned char *hdr;
552};
553
554union l4_hdr_info {
555 struct tcphdr *tcp;
556 struct udphdr *udp;
557 unsigned char *hdr;
558};
559
560/* the distance between [begin, end) in a ring buffer
561 * note: there is a unuse slot between the begin and the end
562 */
563static inline int ring_dist(struct hns3_enet_ring *ring, int begin, int end)
564{
565 return (end - begin + ring->desc_num) % ring->desc_num;
566}
567
568static inline int ring_space(struct hns3_enet_ring *ring)
569{
570 return ring->desc_num -
571 ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
572}
573
574static inline int is_ring_empty(struct hns3_enet_ring *ring)
575{
576 return ring->next_to_use == ring->next_to_clean;
577}
578
579static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value)
580{
581 u8 __iomem *reg_addr = READ_ONCE(base);
582
583 writel(value, reg_addr + reg);
584}
585
586#define hns3_write_dev(a, reg, value) \
587 hns3_write_reg((a)->io_base, (reg), (value))
588
589#define hnae_queue_xmit(tqp, buf_num) writel_relaxed(buf_num, \
590 (tqp)->io_base + HNS3_RING_TX_RING_TAIL_REG)
591
592#define ring_to_dev(ring) (&(ring)->tqp->handle->pdev->dev)
593
594#define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \
595 DMA_TO_DEVICE : DMA_FROM_DEVICE)
596
597#define tx_ring_data(priv, idx) ((priv)->ring_data[idx])
598
599#define hnae_buf_size(_ring) ((_ring)->buf_size)
600#define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
601#define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))
602
603/* iterator for handling rings in ring group */
604#define hns3_for_each_ring(pos, head) \
605 for (pos = (head).ring; pos; pos = pos->next)
606
Yunsheng Lin9780cb92017-10-09 15:43:56 +0800607#define hns3_get_handle(ndev) \
608 (((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
609
Fuyun Liang434776a2018-01-12 16:23:10 +0800610#define hns3_gl_usec_to_reg(int_gl) (int_gl >> 1)
611#define hns3_gl_round_down(int_gl) round_down(int_gl, 2)
612
613#define hns3_rl_usec_to_reg(int_rl) (int_rl >> 2)
614#define hns3_rl_round_down(int_rl) round_down(int_rl, 4)
615
Salil76ad4f02017-08-02 16:59:45 +0100616void hns3_ethtool_set_ops(struct net_device *netdev);
Peng Li09f2af62017-12-22 12:21:41 +0800617int hns3_set_channels(struct net_device *netdev,
618 struct ethtool_channels *ch);
Salil76ad4f02017-08-02 16:59:45 +0100619
Lipeng24e750c2017-10-23 19:51:07 +0800620bool hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget);
Lipeng5668abd2017-10-10 16:42:04 +0800621int hns3_init_all_ring(struct hns3_nic_priv *priv);
622int hns3_uninit_all_ring(struct hns3_nic_priv *priv);
Yunsheng Lind43e5ac2017-10-20 10:19:21 +0800623netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
624int hns3_clean_rx_ring(
625 struct hns3_enet_ring *ring, int budget,
626 void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));
Yunsheng Lin986743d2017-09-27 09:45:30 +0800627
Fuyun Liang434776a2018-01-12 16:23:10 +0800628void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector,
629 u32 gl_value);
630void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector,
631 u32 gl_value);
632void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector,
633 u32 rl_value);
634
Yunsheng Lin986743d2017-09-27 09:45:30 +0800635#ifdef CONFIG_HNS3_DCB
636void hns3_dcbnl_setup(struct hnae3_handle *handle);
637#else
638static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {}
639#endif
640
Salil76ad4f02017-08-02 16:59:45 +0100641#endif