1 /* SPDX-License-Identifier: GPL-2.0+ */
2 // Copyright (c) 2016-2017 Hisilicon Limited.
3
4 #ifndef __HNS3_ENET_H
5 #define __HNS3_ENET_H
6
7 #include <linux/dim.h>
8 #include <linux/if_vlan.h>
9 #include <net/page_pool/types.h>
10 #include <asm/barrier.h>
11
12 #include "hnae3.h"
13
14 struct iphdr;
15 struct ipv6hdr;
16
17 enum hns3_nic_state {
18 HNS3_NIC_STATE_TESTING,
19 HNS3_NIC_STATE_RESETTING,
20 HNS3_NIC_STATE_INITED,
21 HNS3_NIC_STATE_DOWN,
22 HNS3_NIC_STATE_DISABLED,
23 HNS3_NIC_STATE_REMOVING,
24 HNS3_NIC_STATE_SERVICE_INITED,
25 HNS3_NIC_STATE_SERVICE_SCHED,
26 HNS3_NIC_STATE2_RESET_REQUESTED,
27 HNS3_NIC_STATE_HW_TX_CSUM_ENABLE,
28 HNS3_NIC_STATE_RXD_ADV_LAYOUT_ENABLE,
29 HNS3_NIC_STATE_TX_PUSH_ENABLE,
30 HNS3_NIC_STATE_MAX
31 };
32
33 #define HNS3_MAX_PUSH_BD_NUM 2
34
35 #define HNS3_RING_RX_RING_BASEADDR_L_REG 0x00000
36 #define HNS3_RING_RX_RING_BASEADDR_H_REG 0x00004
37 #define HNS3_RING_RX_RING_BD_NUM_REG 0x00008
38 #define HNS3_RING_RX_RING_BD_LEN_REG 0x0000C
39 #define HNS3_RING_RX_RING_TAIL_REG 0x00018
40 #define HNS3_RING_RX_RING_HEAD_REG 0x0001C
41 #define HNS3_RING_RX_RING_FBDNUM_REG 0x00020
42 #define HNS3_RING_RX_RING_PKTNUM_RECORD_REG 0x0002C
43
44 #define HNS3_RING_TX_RING_BASEADDR_L_REG 0x00040
45 #define HNS3_RING_TX_RING_BASEADDR_H_REG 0x00044
46 #define HNS3_RING_TX_RING_BD_NUM_REG 0x00048
47 #define HNS3_RING_TX_RING_TC_REG 0x00050
48 #define HNS3_RING_TX_RING_TAIL_REG 0x00058
49 #define HNS3_RING_TX_RING_HEAD_REG 0x0005C
50 #define HNS3_RING_TX_RING_FBDNUM_REG 0x00060
51 #define HNS3_RING_TX_RING_OFFSET_REG 0x00064
52 #define HNS3_RING_TX_RING_EBDNUM_REG 0x00068
53 #define HNS3_RING_TX_RING_PKTNUM_RECORD_REG 0x0006C
54 #define HNS3_RING_TX_RING_EBD_OFFSET_REG 0x00070
55 #define HNS3_RING_TX_RING_BD_ERR_REG 0x00074
56 #define HNS3_RING_EN_REG 0x00090
57 #define HNS3_RING_RX_EN_REG 0x00098
58 #define HNS3_RING_TX_EN_REG 0x000D4
59
60 #define HNS3_RX_HEAD_SIZE 256
61
62 #define HNS3_TX_TIMEOUT (5 * HZ)
63 #define HNS3_RING_NAME_LEN 16
64 #define HNS3_BUFFER_SIZE_2048 2048
65 #define HNS3_RING_MAX_PENDING 32760
66 #define HNS3_RING_MIN_PENDING 72
67 #define HNS3_RING_BD_MULTIPLE 8
68 /* max frame size of mac */
69 #define HNS3_MAX_MTU(max_frm_size) \
70 ((max_frm_size) - (ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN))
71
72 #define HNS3_BD_SIZE_512_TYPE 0
73 #define HNS3_BD_SIZE_1024_TYPE 1
74 #define HNS3_BD_SIZE_2048_TYPE 2
75 #define HNS3_BD_SIZE_4096_TYPE 3
76
77 #define HNS3_RX_FLAG_VLAN_PRESENT 0x1
78 #define HNS3_RX_FLAG_L3ID_IPV4 0x0
79 #define HNS3_RX_FLAG_L3ID_IPV6 0x1
80 #define HNS3_RX_FLAG_L4ID_UDP 0x0
81 #define HNS3_RX_FLAG_L4ID_TCP 0x1
82
83 #define HNS3_RXD_DMAC_S 0
84 #define HNS3_RXD_DMAC_M (0x3 << HNS3_RXD_DMAC_S)
85 #define HNS3_RXD_VLAN_S 2
86 #define HNS3_RXD_VLAN_M (0x3 << HNS3_RXD_VLAN_S)
87 #define HNS3_RXD_L3ID_S 4
88 #define HNS3_RXD_L3ID_M (0xf << HNS3_RXD_L3ID_S)
89 #define HNS3_RXD_L4ID_S 8
90 #define HNS3_RXD_L4ID_M (0xf << HNS3_RXD_L4ID_S)
91 #define HNS3_RXD_FRAG_B 12
92 #define HNS3_RXD_STRP_TAGP_S 13
93 #define HNS3_RXD_STRP_TAGP_M (0x3 << HNS3_RXD_STRP_TAGP_S)
94
95 #define HNS3_RXD_L2E_B 16
96 #define HNS3_RXD_L3E_B 17
97 #define HNS3_RXD_L4E_B 18
98 #define HNS3_RXD_TRUNCAT_B 19
99 #define HNS3_RXD_HOI_B 20
100 #define HNS3_RXD_DOI_B 21
101 #define HNS3_RXD_OL3E_B 22
102 #define HNS3_RXD_OL4E_B 23
103 #define HNS3_RXD_GRO_COUNT_S 24
104 #define HNS3_RXD_GRO_COUNT_M (0x3f << HNS3_RXD_GRO_COUNT_S)
105 #define HNS3_RXD_GRO_FIXID_B 30
106 #define HNS3_RXD_GRO_ECN_B 31
107
108 #define HNS3_RXD_ODMAC_S 0
109 #define HNS3_RXD_ODMAC_M (0x3 << HNS3_RXD_ODMAC_S)
110 #define HNS3_RXD_OVLAN_S 2
111 #define HNS3_RXD_OVLAN_M (0x3 << HNS3_RXD_OVLAN_S)
112 #define HNS3_RXD_OL3ID_S 4
113 #define HNS3_RXD_OL3ID_M (0xf << HNS3_RXD_OL3ID_S)
114 #define HNS3_RXD_OL4ID_S 8
115 #define HNS3_RXD_OL4ID_M (0xf << HNS3_RXD_OL4ID_S)
116 #define HNS3_RXD_FBHI_S 12
117 #define HNS3_RXD_FBHI_M (0x3 << HNS3_RXD_FBHI_S)
118 #define HNS3_RXD_FBLI_S 14
119 #define HNS3_RXD_FBLI_M (0x3 << HNS3_RXD_FBLI_S)
120
121 #define HNS3_RXD_PTYPE_S 4
122 #define HNS3_RXD_PTYPE_M GENMASK(11, 4)
123
124 #define HNS3_RXD_BDTYPE_S 0
125 #define HNS3_RXD_BDTYPE_M (0xf << HNS3_RXD_BDTYPE_S)
126 #define HNS3_RXD_VLD_B 4
127 #define HNS3_RXD_UDP0_B 5
128 #define HNS3_RXD_EXTEND_B 7
129 #define HNS3_RXD_FE_B 8
130 #define HNS3_RXD_LUM_B 9
131 #define HNS3_RXD_CRCP_B 10
132 #define HNS3_RXD_L3L4P_B 11
133 #define HNS3_RXD_TSIDX_S 12
134 #define HNS3_RXD_TSIDX_M (0x3 << HNS3_RXD_TSIDX_S)
135 #define HNS3_RXD_TS_VLD_B 14
136 #define HNS3_RXD_LKBK_B 15
137 #define HNS3_RXD_GRO_SIZE_S 16
138 #define HNS3_RXD_GRO_SIZE_M (0x3fff << HNS3_RXD_GRO_SIZE_S)
139
140 #define HNS3_TXD_L3T_S 0
141 #define HNS3_TXD_L3T_M (0x3 << HNS3_TXD_L3T_S)
142 #define HNS3_TXD_L4T_S 2
143 #define HNS3_TXD_L4T_M (0x3 << HNS3_TXD_L4T_S)
144 #define HNS3_TXD_L3CS_B 4
145 #define HNS3_TXD_L4CS_B 5
146 #define HNS3_TXD_VLAN_B 6
147 #define HNS3_TXD_TSO_B 7
148
149 #define HNS3_TXD_L2LEN_S 8
150 #define HNS3_TXD_L2LEN_M (0xff << HNS3_TXD_L2LEN_S)
151 #define HNS3_TXD_L3LEN_S 16
152 #define HNS3_TXD_L3LEN_M (0xff << HNS3_TXD_L3LEN_S)
153 #define HNS3_TXD_L4LEN_S 24
154 #define HNS3_TXD_L4LEN_M (0xff << HNS3_TXD_L4LEN_S)
155
156 #define HNS3_TXD_CSUM_START_S 8
157 #define HNS3_TXD_CSUM_START_M (0xffff << HNS3_TXD_CSUM_START_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_CSUM_OFFSET_S 8
167 #define HNS3_TXD_CSUM_OFFSET_M (0xffff << HNS3_TXD_CSUM_OFFSET_S)
168
169 #define HNS3_TXD_BDTYPE_S 0
170 #define HNS3_TXD_BDTYPE_M (0xf << HNS3_TXD_BDTYPE_S)
171 #define HNS3_TXD_FE_B 4
172 #define HNS3_TXD_SC_S 5
173 #define HNS3_TXD_SC_M (0x3 << HNS3_TXD_SC_S)
174 #define HNS3_TXD_EXTEND_B 7
175 #define HNS3_TXD_VLD_B 8
176 #define HNS3_TXD_RI_B 9
177 #define HNS3_TXD_RA_B 10
178 #define HNS3_TXD_TSYN_B 11
179 #define HNS3_TXD_DECTTL_S 12
180 #define HNS3_TXD_DECTTL_M (0xf << HNS3_TXD_DECTTL_S)
181
182 #define HNS3_TXD_OL4CS_B 22
183
184 #define HNS3_TXD_MSS_S 0
185 #define HNS3_TXD_MSS_M (0x3fff << HNS3_TXD_MSS_S)
186 #define HNS3_TXD_HW_CS_B 14
187
188 #define HNS3_VECTOR_TX_IRQ BIT_ULL(0)
189 #define HNS3_VECTOR_RX_IRQ BIT_ULL(1)
190
191 #define HNS3_VECTOR_NOT_INITED 0
192 #define HNS3_VECTOR_INITED 1
193
194 #define HNS3_MAX_BD_SIZE 65535
195 #define HNS3_MAX_TSO_BD_NUM 63U
196 #define HNS3_MAX_TSO_SIZE 1048576U
197 #define HNS3_MAX_NON_TSO_SIZE 9728U
198
199 #define HNS3_VECTOR_GL_MASK GENMASK(11, 0)
200 #define HNS3_VECTOR_GL0_OFFSET 0x100
201 #define HNS3_VECTOR_GL1_OFFSET 0x200
202 #define HNS3_VECTOR_GL2_OFFSET 0x300
203 #define HNS3_VECTOR_RL_OFFSET 0x900
204 #define HNS3_VECTOR_RL_EN_B 6
205 #define HNS3_VECTOR_QL_MASK GENMASK(9, 0)
206 #define HNS3_VECTOR_TX_QL_OFFSET 0xe00
207 #define HNS3_VECTOR_RX_QL_OFFSET 0xf00
208
209 #define HNS3_RING_EN_B 0
210
211 #define HNS3_GL0_CQ_MODE_REG 0x20d00
212 #define HNS3_GL1_CQ_MODE_REG 0x20d04
213 #define HNS3_GL2_CQ_MODE_REG 0x20d08
214 #define HNS3_CQ_MODE_EQE 1U
215 #define HNS3_CQ_MODE_CQE 0U
216
217 #define HNS3_RESCHED_BD_NUM 1024
218
219 enum hns3_pkt_l2t_type {
220 HNS3_L2_TYPE_UNICAST,
221 HNS3_L2_TYPE_MULTICAST,
222 HNS3_L2_TYPE_BROADCAST,
223 HNS3_L2_TYPE_INVALID,
224 };
225
226 enum hns3_pkt_l3t_type {
227 HNS3_L3T_NONE,
228 HNS3_L3T_IPV6,
229 HNS3_L3T_IPV4,
230 HNS3_L3T_RESERVED
231 };
232
233 enum hns3_pkt_l4t_type {
234 HNS3_L4T_UNKNOWN,
235 HNS3_L4T_TCP,
236 HNS3_L4T_UDP,
237 HNS3_L4T_SCTP
238 };
239
240 enum hns3_pkt_ol3t_type {
241 HNS3_OL3T_NONE,
242 HNS3_OL3T_IPV6,
243 HNS3_OL3T_IPV4_NO_CSUM,
244 HNS3_OL3T_IPV4_CSUM
245 };
246
247 enum hns3_pkt_tun_type {
248 HNS3_TUN_NONE,
249 HNS3_TUN_MAC_IN_UDP,
250 HNS3_TUN_NVGRE,
251 HNS3_TUN_OTHER
252 };
253
254 /* hardware spec ring buffer format */
255 struct __packed hns3_desc {
256 union {
257 __le64 addr;
258 __le16 csum;
259 struct {
260 __le32 ts_nsec;
261 __le32 ts_sec;
262 };
263 };
264 union {
265 struct {
266 __le16 vlan_tag;
267 __le16 send_size;
268 union {
269 __le32 type_cs_vlan_tso_len;
270 struct {
271 __u8 type_cs_vlan_tso;
272 __u8 l2_len;
273 __u8 l3_len;
274 __u8 l4_len;
275 };
276 };
277 __le16 outer_vlan_tag;
278 __le16 tv;
279
280 union {
281 __le32 ol_type_vlan_len_msec;
282 struct {
283 __u8 ol_type_vlan_msec;
284 __u8 ol2_len;
285 __u8 ol3_len;
286 __u8 ol4_len;
287 };
288 };
289
290 __le32 paylen_ol4cs;
291 __le16 bdtp_fe_sc_vld_ra_ri;
292 __le16 mss_hw_csum;
293 } tx;
294
295 struct {
296 __le32 l234_info;
297 __le16 pkt_len;
298 __le16 size;
299
300 __le32 rss_hash;
301 __le16 fd_id;
302 __le16 vlan_tag;
303
304 union {
305 __le32 ol_info;
306 struct {
307 __le16 o_dm_vlan_id_fb;
308 __le16 ot_vlan_tag;
309 };
310 };
311
312 __le32 bd_base_info;
313 } rx;
314 };
315 };
316
317 enum hns3_desc_type {
318 DESC_TYPE_UNKNOWN = 0,
319 DESC_TYPE_SKB = 1 << 0,
320 DESC_TYPE_FRAGLIST_SKB = 1 << 1,
321 DESC_TYPE_PAGE = 1 << 2,
322 DESC_TYPE_BOUNCE_ALL = 1 << 3,
323 DESC_TYPE_BOUNCE_HEAD = 1 << 4,
324 DESC_TYPE_SGL_SKB = 1 << 5,
325 DESC_TYPE_PP_FRAG = 1 << 6,
326 };
327
328 struct hns3_desc_cb {
329 dma_addr_t dma; /* dma address of this desc */
330 void *buf; /* cpu addr for a desc */
331
332 /* priv data for the desc, e.g. skb when use with ip stack */
333 void *priv;
334
335 union {
336 u32 page_offset; /* for rx */
337 u32 send_bytes; /* for tx */
338 };
339
340 u32 length; /* length of the buffer */
341
342 u16 reuse_flag;
343 u16 refill;
344
345 /* desc type, used by the ring user to mark the type of the priv data */
346 u16 type;
347 u16 pagecnt_bias;
348 };
349
350 enum hns3_pkt_l3type {
351 HNS3_L3_TYPE_IPV4,
352 HNS3_L3_TYPE_IPV6,
353 HNS3_L3_TYPE_ARP,
354 HNS3_L3_TYPE_RARP,
355 HNS3_L3_TYPE_IPV4_OPT,
356 HNS3_L3_TYPE_IPV6_EXT,
357 HNS3_L3_TYPE_LLDP,
358 HNS3_L3_TYPE_BPDU,
359 HNS3_L3_TYPE_MAC_PAUSE,
360 HNS3_L3_TYPE_PFC_PAUSE, /* 0x9 */
361
362 /* reserved for 0xA~0xB */
363
364 HNS3_L3_TYPE_CNM = 0xc,
365
366 /* reserved for 0xD~0xE */
367
368 HNS3_L3_TYPE_PARSE_FAIL = 0xf /* must be last */
369 };
370
371 enum hns3_pkt_l4type {
372 HNS3_L4_TYPE_UDP,
373 HNS3_L4_TYPE_TCP,
374 HNS3_L4_TYPE_GRE,
375 HNS3_L4_TYPE_SCTP,
376 HNS3_L4_TYPE_IGMP,
377 HNS3_L4_TYPE_ICMP,
378
379 /* reserved for 0x6~0xE */
380
381 HNS3_L4_TYPE_PARSE_FAIL = 0xf /* must be last */
382 };
383
384 enum hns3_pkt_ol3type {
385 HNS3_OL3_TYPE_IPV4 = 0,
386 HNS3_OL3_TYPE_IPV6,
387 /* reserved for 0x2~0x3 */
388 HNS3_OL3_TYPE_IPV4_OPT = 4,
389 HNS3_OL3_TYPE_IPV6_EXT,
390
391 /* reserved for 0x6~0xE */
392
393 HNS3_OL3_TYPE_PARSE_FAIL = 0xf /* must be last */
394 };
395
396 enum hns3_pkt_ol4type {
397 HNS3_OL4_TYPE_NO_TUN,
398 HNS3_OL4_TYPE_MAC_IN_UDP,
399 HNS3_OL4_TYPE_NVGRE,
400 HNS3_OL4_TYPE_UNKNOWN
401 };
402
403 struct hns3_rx_ptype {
404 u32 ptype : 8;
405 u32 csum_level : 2;
406 u32 ip_summed : 2;
407 u32 l3_type : 4;
408 u32 valid : 1;
409 u32 hash_type: 3;
410 };
411
412 struct ring_stats {
413 u64 sw_err_cnt;
414 u64 seg_pkt_cnt;
415 union {
416 struct {
417 u64 tx_pkts;
418 u64 tx_bytes;
419 u64 tx_more;
420 u64 tx_push;
421 u64 tx_mem_doorbell;
422 u64 restart_queue;
423 u64 tx_busy;
424 u64 tx_copy;
425 u64 tx_vlan_err;
426 u64 tx_l4_proto_err;
427 u64 tx_l2l3l4_err;
428 u64 tx_tso_err;
429 u64 over_max_recursion;
430 u64 hw_limitation;
431 u64 tx_bounce;
432 u64 tx_spare_full;
433 u64 copy_bits_err;
434 u64 tx_sgl;
435 u64 skb2sgl_err;
436 u64 map_sg_err;
437 };
438 struct {
439 u64 rx_pkts;
440 u64 rx_bytes;
441 u64 rx_err_cnt;
442 u64 reuse_pg_cnt;
443 u64 err_pkt_len;
444 u64 err_bd_num;
445 u64 l2_err;
446 u64 l3l4_csum_err;
447 u64 csum_complete;
448 u64 rx_multicast;
449 u64 non_reuse_pg;
450 u64 frag_alloc_err;
451 u64 frag_alloc;
452 };
453 __le16 csum;
454 };
455 };
456
457 struct hns3_tx_spare {
458 dma_addr_t dma;
459 void *buf;
460 u32 next_to_use;
461 u32 next_to_clean;
462 u32 last_to_clean;
463 u32 len;
464 };
465
466 struct hns3_enet_ring {
467 struct hns3_desc *desc; /* dma map address space */
468 struct hns3_desc_cb *desc_cb;
469 struct hns3_enet_ring *next;
470 struct hns3_enet_tqp_vector *tqp_vector;
471 struct hnae3_queue *tqp;
472 int queue_index;
473 struct device *dev; /* will be used for DMA mapping of descriptors */
474 struct page_pool *page_pool;
475
476 /* statistic */
477 struct ring_stats stats;
478 struct u64_stats_sync syncp;
479
480 dma_addr_t desc_dma_addr;
481 u32 buf_size; /* size for hnae_desc->addr, preset by AE */
482 u16 desc_num; /* total number of desc */
483 int next_to_use; /* idx of next spare desc */
484
485 /* idx of lastest sent desc, the ring is empty when equal to
486 * next_to_use
487 */
488 int next_to_clean;
489 u32 flag; /* ring attribute */
490
491 int pending_buf;
492 union {
493 /* for Tx ring */
494 struct {
495 u32 fd_qb_tx_sample;
496 int last_to_use; /* last idx used by xmit */
497 u32 tx_copybreak;
498 struct hns3_tx_spare *tx_spare;
499 };
500
501 /* for Rx ring */
502 struct {
503 u32 pull_len; /* memcpy len for current rx packet */
504 u32 rx_copybreak;
505 u32 frag_num;
506 /* first buffer address for current packet */
507 unsigned char *va;
508 struct sk_buff *skb;
509 struct sk_buff *tail_skb;
510 };
511 };
512 } ____cacheline_internodealigned_in_smp;
513
514 enum hns3_flow_level_range {
515 HNS3_FLOW_LOW = 0,
516 HNS3_FLOW_MID = 1,
517 HNS3_FLOW_HIGH = 2,
518 HNS3_FLOW_ULTRA = 3,
519 };
520
521 #define HNS3_INT_GL_50K 0x0014
522 #define HNS3_INT_GL_20K 0x0032
523 #define HNS3_INT_GL_18K 0x0036
524 #define HNS3_INT_GL_8K 0x007C
525
526 #define HNS3_INT_GL_1US BIT(31)
527
528 #define HNS3_INT_RL_MAX 0x00EC
529 #define HNS3_INT_RL_ENABLE_MASK 0x40
530
531 #define HNS3_INT_QL_DEFAULT_CFG 0x20
532
533 struct hns3_enet_coalesce {
534 u16 int_gl;
535 u16 int_ql;
536 u16 int_ql_max;
537 u8 adapt_enable : 1;
538 u8 ql_enable : 1;
539 u8 unit_1us : 1;
540 enum hns3_flow_level_range flow_level;
541 };
542
543 struct hns3_enet_ring_group {
544 /* array of pointers to rings */
545 struct hns3_enet_ring *ring;
546 u64 total_bytes; /* total bytes processed this group */
547 u64 total_packets; /* total packets processed this group */
548 u16 count;
549 struct hns3_enet_coalesce coal;
550 struct dim dim;
551 };
552
553 struct hns3_enet_tqp_vector {
554 struct hnae3_handle *handle;
555 u8 __iomem *mask_addr;
556 int vector_irq;
557 int irq_init_flag;
558
559 u16 idx; /* index in the TQP vector array per handle. */
560
561 struct napi_struct napi;
562
563 struct hns3_enet_ring_group rx_group;
564 struct hns3_enet_ring_group tx_group;
565
566 cpumask_t affinity_mask;
567 u16 num_tqps; /* total number of tqps in TQP vector */
568 struct irq_affinity_notify affinity_notify;
569
570 char name[HNAE3_INT_NAME_LEN];
571
572 u64 event_cnt;
573 } ____cacheline_internodealigned_in_smp;
574
575 struct hns3_nic_priv {
576 struct hnae3_handle *ae_handle;
577 struct net_device *netdev;
578 struct device *dev;
579
580 /**
581 * the cb for nic to manage the ring buffer, the first half of the
582 * array is for tx_ring and vice versa for the second half
583 */
584 struct hns3_enet_ring *ring;
585 struct hns3_enet_tqp_vector *tqp_vector;
586 u16 vector_num;
587 u8 max_non_tso_bd_num;
588
589 u64 tx_timeout_count;
590
591 unsigned long state;
592
593 enum dim_cq_period_mode tx_cqe_mode;
594 enum dim_cq_period_mode rx_cqe_mode;
595 struct hns3_enet_coalesce tx_coal;
596 struct hns3_enet_coalesce rx_coal;
597 u32 tx_copybreak;
598 u32 rx_copybreak;
599 };
600
601 union l3_hdr_info {
602 struct iphdr *v4;
603 struct ipv6hdr *v6;
604 unsigned char *hdr;
605 };
606
607 union l4_hdr_info {
608 struct tcphdr *tcp;
609 struct udphdr *udp;
610 struct gre_base_hdr *gre;
611 unsigned char *hdr;
612 };
613
614 struct hns3_hw_error_info {
615 enum hnae3_hw_error_type type;
616 const char *msg;
617 };
618
619 struct hns3_reset_type_map {
620 enum ethtool_reset_flags rst_flags;
621 enum hnae3_reset_type rst_type;
622 };
623
ring_space(struct hns3_enet_ring * ring)624 static inline int ring_space(struct hns3_enet_ring *ring)
625 {
626 /* This smp_load_acquire() pairs with smp_store_release() in
627 * hns3_nic_reclaim_one_desc called by hns3_clean_tx_ring.
628 */
629 int begin = smp_load_acquire(&ring->next_to_clean);
630 int end = READ_ONCE(ring->next_to_use);
631
632 return ((end >= begin) ? (ring->desc_num - end + begin) :
633 (begin - end)) - 1;
634 }
635
hns3_tqp_read_reg(struct hns3_enet_ring * ring,u32 reg)636 static inline u32 hns3_tqp_read_reg(struct hns3_enet_ring *ring, u32 reg)
637 {
638 return readl_relaxed(ring->tqp->io_base + reg);
639 }
640
hns3_read_reg(void __iomem * base,u32 reg)641 static inline u32 hns3_read_reg(void __iomem *base, u32 reg)
642 {
643 return readl(base + reg);
644 }
645
hns3_write_reg(void __iomem * base,u32 reg,u32 value)646 static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value)
647 {
648 u8 __iomem *reg_addr = READ_ONCE(base);
649
650 writel(value, reg_addr + reg);
651 }
652
653 #define hns3_read_dev(a, reg) \
654 hns3_read_reg((a)->io_base, reg)
655
hns3_nic_resetting(struct net_device * netdev)656 static inline bool hns3_nic_resetting(struct net_device *netdev)
657 {
658 struct hns3_nic_priv *priv = netdev_priv(netdev);
659
660 return test_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
661 }
662
663 #define hns3_write_dev(a, reg, value) \
664 hns3_write_reg((a)->io_base, reg, value)
665
666 #define ring_to_dev(ring) ((ring)->dev)
667
668 #define ring_to_netdev(ring) ((ring)->tqp_vector->napi.dev)
669
670 #define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \
671 DMA_TO_DEVICE : DMA_FROM_DEVICE)
672
673 #define hns3_buf_size(_ring) ((_ring)->buf_size)
674
675 #define hns3_ring_stats_update(ring, cnt) do { \
676 typeof(ring) (tmp) = (ring); \
677 u64_stats_update_begin(&(tmp)->syncp); \
678 ((tmp)->stats.cnt)++; \
679 u64_stats_update_end(&(tmp)->syncp); \
680 } while (0) \
681
hns3_page_order(struct hns3_enet_ring * ring)682 static inline unsigned int hns3_page_order(struct hns3_enet_ring *ring)
683 {
684 #if (PAGE_SIZE < 8192)
685 if (ring->buf_size > (PAGE_SIZE / 2))
686 return 1;
687 #endif
688 return 0;
689 }
690
691 #define hns3_page_size(_ring) (PAGE_SIZE << hns3_page_order(_ring))
692
693 /* iterator for handling rings in ring group */
694 #define hns3_for_each_ring(pos, head) \
695 for (pos = (head).ring; (pos); pos = (pos)->next)
696
697 #define hns3_get_handle(ndev) \
698 (((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
699
700 #define hns3_get_ae_dev(handle) \
701 (pci_get_drvdata((handle)->pdev))
702
703 #define hns3_get_ops(handle) \
704 ((handle)->ae_algo->ops)
705
706 #define hns3_gl_usec_to_reg(int_gl) ((int_gl) >> 1)
707 #define hns3_gl_round_down(int_gl) round_down(int_gl, 2)
708
709 #define hns3_rl_usec_to_reg(int_rl) ((int_rl) >> 2)
710 #define hns3_rl_round_down(int_rl) round_down(int_rl, 4)
711
712 void hns3_ethtool_set_ops(struct net_device *netdev);
713 int hns3_set_channels(struct net_device *netdev,
714 struct ethtool_channels *ch);
715
716 void hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget);
717 int hns3_init_all_ring(struct hns3_nic_priv *priv);
718 int hns3_nic_reset_all_ring(struct hnae3_handle *h);
719 void hns3_fini_ring(struct hns3_enet_ring *ring);
720 netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
721 bool hns3_is_phys_func(struct pci_dev *pdev);
722 int hns3_clean_rx_ring(
723 struct hns3_enet_ring *ring, int budget,
724 void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));
725
726 void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector,
727 u32 gl_value);
728 void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector,
729 u32 gl_value);
730 void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector,
731 u32 rl_value);
732 void hns3_set_vector_coalesce_rx_ql(struct hns3_enet_tqp_vector *tqp_vector,
733 u32 ql_value);
734 void hns3_set_vector_coalesce_tx_ql(struct hns3_enet_tqp_vector *tqp_vector,
735 u32 ql_value);
736
737 void hns3_request_update_promisc_mode(struct hnae3_handle *handle);
738 int hns3_reset_notify(struct hnae3_handle *handle,
739 enum hnae3_reset_notify_type type);
740
741 #ifdef CONFIG_HNS3_DCB
742 void hns3_dcbnl_setup(struct hnae3_handle *handle);
743 #else
hns3_dcbnl_setup(struct hnae3_handle * handle)744 static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {}
745 #endif
746
747 int hns3_dbg_init(struct hnae3_handle *handle);
748 void hns3_dbg_uninit(struct hnae3_handle *handle);
749 void hns3_dbg_register_debugfs(const char *debugfs_dir_name);
750 void hns3_dbg_unregister_debugfs(void);
751 void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size);
752 u16 hns3_get_max_available_channels(struct hnae3_handle *h);
753 void hns3_cq_period_mode_init(struct hns3_nic_priv *priv,
754 enum dim_cq_period_mode tx_mode,
755 enum dim_cq_period_mode rx_mode);
756
757 void hns3_external_lb_prepare(struct net_device *ndev, bool if_running);
758 void hns3_external_lb_restore(struct net_device *ndev, bool if_running);
759 #endif
760