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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
5 * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
6 * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
7 */
8
9#ifndef MTK_ETH_H
10#define MTK_ETH_H
11
12#include <linux/dma-mapping.h>
13#include <linux/netdevice.h>
14#include <linux/of_net.h>
15#include <linux/u64_stats_sync.h>
16#include <linux/refcount.h>
17#include <linux/phylink.h>
18#include <linux/rhashtable.h>
19#include <linux/dim.h>
20#include <linux/bitfield.h>
21#include <net/page_pool/types.h>
22#include <linux/bpf_trace.h>
23#include "mtk_ppe.h"
24
25#define MTK_MAX_DSA_PORTS 7
26#define MTK_DSA_PORT_MASK GENMASK(2, 0)
27
28#define MTK_QDMA_NUM_QUEUES 16
29#define MTK_QDMA_PAGE_SIZE 2048
30#define MTK_MAX_RX_LENGTH 1536
31#define MTK_MAX_RX_LENGTH_2K 2048
32#define MTK_TX_DMA_BUF_LEN 0x3fff
33#define MTK_TX_DMA_BUF_LEN_V2 0xffff
34#define MTK_QDMA_RING_SIZE 2048
35#define MTK_DMA_SIZE 512
36#define MTK_RX_ETH_HLEN (ETH_HLEN + ETH_FCS_LEN)
37#define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN)
38#define MTK_DMA_DUMMY_DESC 0xffffffff
39#define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \
40 NETIF_MSG_PROBE | \
41 NETIF_MSG_LINK | \
42 NETIF_MSG_TIMER | \
43 NETIF_MSG_IFDOWN | \
44 NETIF_MSG_IFUP | \
45 NETIF_MSG_RX_ERR | \
46 NETIF_MSG_TX_ERR)
47#define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \
48 NETIF_F_RXCSUM | \
49 NETIF_F_HW_VLAN_CTAG_TX | \
50 NETIF_F_SG | NETIF_F_TSO | \
51 NETIF_F_TSO6 | \
52 NETIF_F_IPV6_CSUM |\
53 NETIF_F_HW_TC)
54#define MTK_HW_FEATURES_MT7628 (NETIF_F_SG | NETIF_F_RXCSUM)
55#define NEXT_DESP_IDX(X, Y) (((X) + 1) & ((Y) - 1))
56
57#define MTK_PP_HEADROOM XDP_PACKET_HEADROOM
58#define MTK_PP_PAD (MTK_PP_HEADROOM + \
59 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
60#define MTK_PP_MAX_BUF_SIZE (PAGE_SIZE - MTK_PP_PAD)
61
62#define MTK_QRX_OFFSET 0x10
63
64#define MTK_MAX_RX_RING_NUM 4
65#define MTK_HW_LRO_DMA_SIZE 8
66
67#define MTK_MAX_LRO_RX_LENGTH (4096 * 3)
68#define MTK_MAX_LRO_IP_CNT 2
69#define MTK_HW_LRO_TIMER_UNIT 1 /* 20 us */
70#define MTK_HW_LRO_REFRESH_TIME 50000 /* 1 sec. */
71#define MTK_HW_LRO_AGG_TIME 10 /* 200us */
72#define MTK_HW_LRO_AGE_TIME 50 /* 1ms */
73#define MTK_HW_LRO_MAX_AGG_CNT 64
74#define MTK_HW_LRO_BW_THRE 3000
75#define MTK_HW_LRO_REPLACE_DELTA 1000
76#define MTK_HW_LRO_SDL_REMAIN_ROOM 1522
77
78/* Frame Engine Global Configuration */
79#define MTK_FE_GLO_CFG(x) (((x) == MTK_GMAC3_ID) ? 0x24 : 0x00)
80#define MTK_FE_LINK_DOWN_P(x) BIT(((x) + 8) % 16)
81
82/* Frame Engine Global Reset Register */
83#define MTK_RST_GL 0x04
84#define RST_GL_PSE BIT(0)
85
86/* Frame Engine Interrupt Status Register */
87#define MTK_INT_STATUS2 0x08
88#define MTK_FE_INT_ENABLE 0x0c
89#define MTK_FE_INT_FQ_EMPTY BIT(8)
90#define MTK_FE_INT_TSO_FAIL BIT(12)
91#define MTK_FE_INT_TSO_ILLEGAL BIT(13)
92#define MTK_FE_INT_TSO_ALIGN BIT(14)
93#define MTK_FE_INT_RFIFO_OV BIT(18)
94#define MTK_FE_INT_RFIFO_UF BIT(19)
95#define MTK_GDM1_AF BIT(28)
96#define MTK_GDM2_AF BIT(29)
97
98/* PDMA HW LRO Alter Flow Timer Register */
99#define MTK_PDMA_LRO_ALT_REFRESH_TIMER 0x1c
100
101/* Frame Engine Interrupt Grouping Register */
102#define MTK_FE_INT_GRP 0x20
103
104/* CDMP Ingress Control Register */
105#define MTK_CDMQ_IG_CTRL 0x1400
106#define MTK_CDMQ_STAG_EN BIT(0)
107
108/* CDMQ Exgress Control Register */
109#define MTK_CDMQ_EG_CTRL 0x1404
110
111/* CDMP Ingress Control Register */
112#define MTK_CDMP_IG_CTRL 0x400
113#define MTK_CDMP_STAG_EN BIT(0)
114
115/* CDMP Exgress Control Register */
116#define MTK_CDMP_EG_CTRL 0x404
117
118/* GDM Exgress Control Register */
119#define MTK_GDMA_FWD_CFG(x) ({ typeof(x) _x = (x); (_x == MTK_GMAC3_ID) ? \
120 0x540 : 0x500 + (_x * 0x1000); })
121#define MTK_GDMA_SPECIAL_TAG BIT(24)
122#define MTK_GDMA_ICS_EN BIT(22)
123#define MTK_GDMA_TCS_EN BIT(21)
124#define MTK_GDMA_UCS_EN BIT(20)
125#define MTK_GDMA_STRP_CRC BIT(16)
126#define MTK_GDMA_TO_PDMA 0x0
127#define MTK_GDMA_DROP_ALL 0x7777
128
129/* GDM Egress Control Register */
130#define MTK_GDMA_EG_CTRL(x) ({ typeof(x) _x = (x); (_x == MTK_GMAC3_ID) ? \
131 0x544 : 0x504 + (_x * 0x1000); })
132#define MTK_GDMA_XGDM_SEL BIT(31)
133
134/* Unicast Filter MAC Address Register - Low */
135#define MTK_GDMA_MAC_ADRL(x) ({ typeof(x) _x = (x); (_x == MTK_GMAC3_ID) ? \
136 0x548 : 0x508 + (_x * 0x1000); })
137
138/* Unicast Filter MAC Address Register - High */
139#define MTK_GDMA_MAC_ADRH(x) ({ typeof(x) _x = (x); (_x == MTK_GMAC3_ID) ? \
140 0x54C : 0x50C + (_x * 0x1000); })
141
142/* Internal SRAM offset */
143#define MTK_ETH_SRAM_OFFSET 0x40000
144
145/* FE global misc reg*/
146#define MTK_FE_GLO_MISC 0x124
147
148/* PSE Free Queue Flow Control */
149#define PSE_FQFC_CFG1 0x100
150#define PSE_FQFC_CFG2 0x104
151#define PSE_DROP_CFG 0x108
152#define PSE_PPE0_DROP 0x110
153
154/* PSE Input Queue Reservation Register*/
155#define PSE_IQ_REV(x) (0x140 + (((x) - 1) << 2))
156
157/* PSE Output Queue Threshold Register*/
158#define PSE_OQ_TH(x) (0x160 + (((x) - 1) << 2))
159
160/* GDM and CDM Threshold */
161#define MTK_GDM2_THRES 0x1530
162#define MTK_CDMW0_THRES 0x164c
163#define MTK_CDMW1_THRES 0x1650
164#define MTK_CDME0_THRES 0x1654
165#define MTK_CDME1_THRES 0x1658
166#define MTK_CDMM_THRES 0x165c
167
168/* PDMA HW LRO Control Registers */
169#define MTK_PDMA_LRO_CTRL_DW0 0x980
170#define MTK_LRO_EN BIT(0)
171#define MTK_L3_CKS_UPD_EN BIT(7)
172#define MTK_L3_CKS_UPD_EN_V2 BIT(19)
173#define MTK_LRO_ALT_PKT_CNT_MODE BIT(21)
174#define MTK_LRO_RING_RELINQUISH_REQ (0x7 << 26)
175#define MTK_LRO_RING_RELINQUISH_REQ_V2 (0xf << 24)
176#define MTK_LRO_RING_RELINQUISH_DONE (0x7 << 29)
177#define MTK_LRO_RING_RELINQUISH_DONE_V2 (0xf << 28)
178
179#define MTK_PDMA_LRO_CTRL_DW1 0x984
180#define MTK_PDMA_LRO_CTRL_DW2 0x988
181#define MTK_PDMA_LRO_CTRL_DW3 0x98c
182#define MTK_ADMA_MODE BIT(15)
183#define MTK_LRO_MIN_RXD_SDL (MTK_HW_LRO_SDL_REMAIN_ROOM << 16)
184
185#define MTK_RX_DMA_LRO_EN BIT(8)
186#define MTK_MULTI_EN BIT(10)
187#define MTK_PDMA_SIZE_8DWORDS (1 << 4)
188
189/* PDMA Global Configuration Register */
190#define MTK_PDMA_LRO_SDL 0x3000
191#define MTK_RX_CFG_SDL_OFFSET 16
192
193/* PDMA Reset Index Register */
194#define MTK_PST_DRX_IDX0 BIT(16)
195#define MTK_PST_DRX_IDX_CFG(x) (MTK_PST_DRX_IDX0 << (x))
196
197/* PDMA Delay Interrupt Register */
198#define MTK_PDMA_DELAY_RX_MASK GENMASK(15, 0)
199#define MTK_PDMA_DELAY_RX_EN BIT(15)
200#define MTK_PDMA_DELAY_RX_PINT_SHIFT 8
201#define MTK_PDMA_DELAY_RX_PTIME_SHIFT 0
202
203#define MTK_PDMA_DELAY_TX_MASK GENMASK(31, 16)
204#define MTK_PDMA_DELAY_TX_EN BIT(31)
205#define MTK_PDMA_DELAY_TX_PINT_SHIFT 24
206#define MTK_PDMA_DELAY_TX_PTIME_SHIFT 16
207
208#define MTK_PDMA_DELAY_PINT_MASK 0x7f
209#define MTK_PDMA_DELAY_PTIME_MASK 0xff
210
211/* PDMA HW LRO Alter Flow Delta Register */
212#define MTK_PDMA_LRO_ALT_SCORE_DELTA 0xa4c
213
214/* PDMA HW LRO IP Setting Registers */
215#define MTK_LRO_RX_RING0_DIP_DW0 0xb04
216#define MTK_LRO_DIP_DW0_CFG(x) (MTK_LRO_RX_RING0_DIP_DW0 + (x * 0x40))
217#define MTK_RING_MYIP_VLD BIT(9)
218
219/* PDMA HW LRO Ring Control Registers */
220#define MTK_LRO_RX_RING0_CTRL_DW1 0xb28
221#define MTK_LRO_RX_RING0_CTRL_DW2 0xb2c
222#define MTK_LRO_RX_RING0_CTRL_DW3 0xb30
223#define MTK_LRO_CTRL_DW1_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW1 + (x * 0x40))
224#define MTK_LRO_CTRL_DW2_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW2 + (x * 0x40))
225#define MTK_LRO_CTRL_DW3_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW3 + (x * 0x40))
226#define MTK_RING_AGE_TIME_L ((MTK_HW_LRO_AGE_TIME & 0x3ff) << 22)
227#define MTK_RING_AGE_TIME_H ((MTK_HW_LRO_AGE_TIME >> 10) & 0x3f)
228#define MTK_RING_AUTO_LERAN_MODE (3 << 6)
229#define MTK_RING_VLD BIT(8)
230#define MTK_RING_MAX_AGG_TIME ((MTK_HW_LRO_AGG_TIME & 0xffff) << 10)
231#define MTK_RING_MAX_AGG_CNT_L ((MTK_HW_LRO_MAX_AGG_CNT & 0x3f) << 26)
232#define MTK_RING_MAX_AGG_CNT_H ((MTK_HW_LRO_MAX_AGG_CNT >> 6) & 0x3)
233
234/* QDMA TX Queue Configuration Registers */
235#define MTK_QTX_OFFSET 0x10
236#define QDMA_RES_THRES 4
237
238/* QDMA Tx Queue Scheduler Configuration Registers */
239#define MTK_QTX_SCH_TX_SEL BIT(31)
240#define MTK_QTX_SCH_TX_SEL_V2 GENMASK(31, 30)
241
242#define MTK_QTX_SCH_LEAKY_BUCKET_EN BIT(30)
243#define MTK_QTX_SCH_LEAKY_BUCKET_SIZE GENMASK(29, 28)
244#define MTK_QTX_SCH_MIN_RATE_EN BIT(27)
245#define MTK_QTX_SCH_MIN_RATE_MAN GENMASK(26, 20)
246#define MTK_QTX_SCH_MIN_RATE_EXP GENMASK(19, 16)
247#define MTK_QTX_SCH_MAX_RATE_WEIGHT GENMASK(15, 12)
248#define MTK_QTX_SCH_MAX_RATE_EN BIT(11)
249#define MTK_QTX_SCH_MAX_RATE_MAN GENMASK(10, 4)
250#define MTK_QTX_SCH_MAX_RATE_EXP GENMASK(3, 0)
251
252/* QDMA TX Scheduler Rate Control Register */
253#define MTK_QDMA_TX_SCH_MAX_WFQ BIT(15)
254
255/* QDMA Global Configuration Register */
256#define MTK_RX_2B_OFFSET BIT(31)
257#define MTK_RX_BT_32DWORDS (3 << 11)
258#define MTK_NDP_CO_PRO BIT(10)
259#define MTK_TX_WB_DDONE BIT(6)
260#define MTK_TX_BT_32DWORDS (3 << 4)
261#define MTK_RX_DMA_BUSY BIT(3)
262#define MTK_TX_DMA_BUSY BIT(1)
263#define MTK_RX_DMA_EN BIT(2)
264#define MTK_TX_DMA_EN BIT(0)
265#define MTK_DMA_BUSY_TIMEOUT_US 1000000
266
267/* QDMA V2 Global Configuration Register */
268#define MTK_CHK_DDONE_EN BIT(28)
269#define MTK_DMAD_WR_WDONE BIT(26)
270#define MTK_WCOMP_EN BIT(24)
271#define MTK_RESV_BUF (0x40 << 16)
272#define MTK_MUTLI_CNT (0x4 << 12)
273#define MTK_LEAKY_BUCKET_EN BIT(11)
274
275/* QDMA Flow Control Register */
276#define FC_THRES_DROP_MODE BIT(20)
277#define FC_THRES_DROP_EN (7 << 16)
278#define FC_THRES_MIN 0x4444
279
280/* QDMA Interrupt Status Register */
281#define MTK_RX_DONE_DLY BIT(30)
282#define MTK_TX_DONE_DLY BIT(28)
283#define MTK_RX_DONE_INT3 BIT(19)
284#define MTK_RX_DONE_INT2 BIT(18)
285#define MTK_RX_DONE_INT1 BIT(17)
286#define MTK_RX_DONE_INT0 BIT(16)
287#define MTK_TX_DONE_INT3 BIT(3)
288#define MTK_TX_DONE_INT2 BIT(2)
289#define MTK_TX_DONE_INT1 BIT(1)
290#define MTK_TX_DONE_INT0 BIT(0)
291#define MTK_RX_DONE_INT MTK_RX_DONE_DLY
292#define MTK_TX_DONE_INT MTK_TX_DONE_DLY
293
294#define MTK_RX_DONE_INT_V2 BIT(14)
295
296#define MTK_CDM_TXFIFO_RDY BIT(7)
297
298/* QDMA Interrupt grouping registers */
299#define MTK_RLS_DONE_INT BIT(0)
300
301/* QDMA TX NUM */
302#define QID_BITS_V2(x) (((x) & 0x3f) << 16)
303#define MTK_QDMA_GMAC2_QID 8
304
305#define MTK_TX_DMA_BUF_SHIFT 8
306
307/* QDMA V2 descriptor txd6 */
308#define TX_DMA_INS_VLAN_V2 BIT(16)
309/* QDMA V2 descriptor txd5 */
310#define TX_DMA_CHKSUM_V2 (0x7 << 28)
311#define TX_DMA_TSO_V2 BIT(31)
312
313#define TX_DMA_SPTAG_V3 BIT(27)
314
315/* QDMA V2 descriptor txd4 */
316#define TX_DMA_FPORT_SHIFT_V2 8
317#define TX_DMA_FPORT_MASK_V2 0xf
318#define TX_DMA_SWC_V2 BIT(30)
319
320/* QDMA descriptor txd4 */
321#define TX_DMA_CHKSUM (0x7 << 29)
322#define TX_DMA_TSO BIT(28)
323#define TX_DMA_FPORT_SHIFT 25
324#define TX_DMA_FPORT_MASK 0x7
325#define TX_DMA_INS_VLAN BIT(16)
326
327/* QDMA descriptor txd3 */
328#define TX_DMA_OWNER_CPU BIT(31)
329#define TX_DMA_LS0 BIT(30)
330#define TX_DMA_PLEN0(x) (((x) & eth->soc->txrx.dma_max_len) << eth->soc->txrx.dma_len_offset)
331#define TX_DMA_PLEN1(x) ((x) & eth->soc->txrx.dma_max_len)
332#define TX_DMA_SWC BIT(14)
333#define TX_DMA_PQID GENMASK(3, 0)
334#define TX_DMA_ADDR64_MASK GENMASK(3, 0)
335#if IS_ENABLED(CONFIG_64BIT)
336# define TX_DMA_GET_ADDR64(x) (((u64)FIELD_GET(TX_DMA_ADDR64_MASK, (x))) << 32)
337# define TX_DMA_PREP_ADDR64(x) FIELD_PREP(TX_DMA_ADDR64_MASK, ((x) >> 32))
338#else
339# define TX_DMA_GET_ADDR64(x) (0)
340# define TX_DMA_PREP_ADDR64(x) (0)
341#endif
342
343/* PDMA on MT7628 */
344#define TX_DMA_DONE BIT(31)
345#define TX_DMA_LS1 BIT(14)
346#define TX_DMA_DESP2_DEF (TX_DMA_LS0 | TX_DMA_DONE)
347
348/* QDMA descriptor rxd2 */
349#define RX_DMA_DONE BIT(31)
350#define RX_DMA_LSO BIT(30)
351#define RX_DMA_PREP_PLEN0(x) (((x) & eth->soc->txrx.dma_max_len) << eth->soc->txrx.dma_len_offset)
352#define RX_DMA_GET_PLEN0(x) (((x) >> eth->soc->txrx.dma_len_offset) & eth->soc->txrx.dma_max_len)
353#define RX_DMA_VTAG BIT(15)
354#define RX_DMA_ADDR64_MASK GENMASK(3, 0)
355#if IS_ENABLED(CONFIG_64BIT)
356# define RX_DMA_GET_ADDR64(x) (((u64)FIELD_GET(RX_DMA_ADDR64_MASK, (x))) << 32)
357# define RX_DMA_PREP_ADDR64(x) FIELD_PREP(RX_DMA_ADDR64_MASK, ((x) >> 32))
358#else
359# define RX_DMA_GET_ADDR64(x) (0)
360# define RX_DMA_PREP_ADDR64(x) (0)
361#endif
362
363/* QDMA descriptor rxd3 */
364#define RX_DMA_VID(x) ((x) & VLAN_VID_MASK)
365#define RX_DMA_TCI(x) ((x) & (VLAN_PRIO_MASK | VLAN_VID_MASK))
366#define RX_DMA_VPID(x) (((x) >> 16) & 0xffff)
367
368/* QDMA descriptor rxd4 */
369#define MTK_RXD4_FOE_ENTRY GENMASK(13, 0)
370#define MTK_RXD4_PPE_CPU_REASON GENMASK(18, 14)
371#define MTK_RXD4_SRC_PORT GENMASK(21, 19)
372#define MTK_RXD4_ALG GENMASK(31, 22)
373
374/* QDMA descriptor rxd4 */
375#define RX_DMA_L4_VALID BIT(24)
376#define RX_DMA_L4_VALID_PDMA BIT(30) /* when PDMA is used */
377#define RX_DMA_SPECIAL_TAG BIT(22)
378
379/* PDMA descriptor rxd5 */
380#define MTK_RXD5_FOE_ENTRY GENMASK(14, 0)
381#define MTK_RXD5_PPE_CPU_REASON GENMASK(22, 18)
382#define MTK_RXD5_SRC_PORT GENMASK(29, 26)
383
384#define RX_DMA_GET_SPORT(x) (((x) >> 19) & 0x7)
385#define RX_DMA_GET_SPORT_V2(x) (((x) >> 26) & 0xf)
386
387/* PDMA V2 descriptor rxd3 */
388#define RX_DMA_VTAG_V2 BIT(0)
389#define RX_DMA_L4_VALID_V2 BIT(2)
390
391/* PHY Polling and SMI Master Control registers */
392#define MTK_PPSC 0x10000
393#define PPSC_MDC_CFG GENMASK(29, 24)
394#define PPSC_MDC_TURBO BIT(20)
395#define MDC_MAX_FREQ 25000000
396#define MDC_MAX_DIVIDER 63
397
398/* PHY Indirect Access Control registers */
399#define MTK_PHY_IAC 0x10004
400#define PHY_IAC_ACCESS BIT(31)
401#define PHY_IAC_REG_MASK GENMASK(29, 25)
402#define PHY_IAC_REG(x) FIELD_PREP(PHY_IAC_REG_MASK, (x))
403#define PHY_IAC_ADDR_MASK GENMASK(24, 20)
404#define PHY_IAC_ADDR(x) FIELD_PREP(PHY_IAC_ADDR_MASK, (x))
405#define PHY_IAC_CMD_MASK GENMASK(19, 18)
406#define PHY_IAC_CMD_C45_ADDR FIELD_PREP(PHY_IAC_CMD_MASK, 0)
407#define PHY_IAC_CMD_WRITE FIELD_PREP(PHY_IAC_CMD_MASK, 1)
408#define PHY_IAC_CMD_C22_READ FIELD_PREP(PHY_IAC_CMD_MASK, 2)
409#define PHY_IAC_CMD_C45_READ FIELD_PREP(PHY_IAC_CMD_MASK, 3)
410#define PHY_IAC_START_MASK GENMASK(17, 16)
411#define PHY_IAC_START_C45 FIELD_PREP(PHY_IAC_START_MASK, 0)
412#define PHY_IAC_START_C22 FIELD_PREP(PHY_IAC_START_MASK, 1)
413#define PHY_IAC_DATA_MASK GENMASK(15, 0)
414#define PHY_IAC_DATA(x) FIELD_PREP(PHY_IAC_DATA_MASK, (x))
415#define PHY_IAC_TIMEOUT HZ
416
417#define MTK_MAC_MISC 0x1000c
418#define MTK_MAC_MISC_V3 0x10010
419#define MTK_MUX_TO_ESW BIT(0)
420#define MISC_MDC_TURBO BIT(4)
421
422/* XMAC status registers */
423#define MTK_XGMAC_STS(x) (((x) == MTK_GMAC3_ID) ? 0x1001C : 0x1000C)
424#define MTK_XGMAC_FORCE_LINK(x) (((x) == MTK_GMAC2_ID) ? BIT(31) : BIT(15))
425#define MTK_USXGMII_PCS_LINK BIT(8)
426#define MTK_XGMAC_RX_FC BIT(5)
427#define MTK_XGMAC_TX_FC BIT(4)
428#define MTK_USXGMII_PCS_MODE GENMASK(3, 1)
429#define MTK_XGMAC_LINK_STS BIT(0)
430
431/* GSW bridge registers */
432#define MTK_GSW_CFG (0x10080)
433#define GSWTX_IPG_MASK GENMASK(19, 16)
434#define GSWTX_IPG_SHIFT 16
435#define GSWRX_IPG_MASK GENMASK(3, 0)
436#define GSWRX_IPG_SHIFT 0
437#define GSW_IPG_11 11
438
439/* Mac control registers */
440#define MTK_MAC_MCR(x) (0x10100 + (x * 0x100))
441#define MAC_MCR_MAX_RX_MASK GENMASK(25, 24)
442#define MAC_MCR_MAX_RX(_x) (MAC_MCR_MAX_RX_MASK & ((_x) << 24))
443#define MAC_MCR_MAX_RX_1518 0x0
444#define MAC_MCR_MAX_RX_1536 0x1
445#define MAC_MCR_MAX_RX_1552 0x2
446#define MAC_MCR_MAX_RX_2048 0x3
447#define MAC_MCR_IPG_CFG (BIT(18) | BIT(16))
448#define MAC_MCR_FORCE_MODE BIT(15)
449#define MAC_MCR_TX_EN BIT(14)
450#define MAC_MCR_RX_EN BIT(13)
451#define MAC_MCR_RX_FIFO_CLR_DIS BIT(12)
452#define MAC_MCR_BACKOFF_EN BIT(9)
453#define MAC_MCR_BACKPR_EN BIT(8)
454#define MAC_MCR_FORCE_RX_FC BIT(5)
455#define MAC_MCR_FORCE_TX_FC BIT(4)
456#define MAC_MCR_SPEED_1000 BIT(3)
457#define MAC_MCR_SPEED_100 BIT(2)
458#define MAC_MCR_FORCE_DPX BIT(1)
459#define MAC_MCR_FORCE_LINK BIT(0)
460#define MAC_MCR_FORCE_LINK_DOWN (MAC_MCR_FORCE_MODE)
461
462/* Mac status registers */
463#define MTK_MAC_MSR(x) (0x10108 + (x * 0x100))
464#define MAC_MSR_EEE1G BIT(7)
465#define MAC_MSR_EEE100M BIT(6)
466#define MAC_MSR_RX_FC BIT(5)
467#define MAC_MSR_TX_FC BIT(4)
468#define MAC_MSR_SPEED_1000 BIT(3)
469#define MAC_MSR_SPEED_100 BIT(2)
470#define MAC_MSR_SPEED_MASK (MAC_MSR_SPEED_1000 | MAC_MSR_SPEED_100)
471#define MAC_MSR_DPX BIT(1)
472#define MAC_MSR_LINK BIT(0)
473
474/* TRGMII RXC control register */
475#define TRGMII_RCK_CTRL 0x10300
476#define DQSI0(x) ((x << 0) & GENMASK(6, 0))
477#define DQSI1(x) ((x << 8) & GENMASK(14, 8))
478#define RXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16))
479#define RXC_RST BIT(31)
480#define RXC_DQSISEL BIT(30)
481#define RCK_CTRL_RGMII_1000 (RXC_DQSISEL | RXCTL_DMWTLAT(2) | DQSI1(16))
482#define RCK_CTRL_RGMII_10_100 RXCTL_DMWTLAT(2)
483
484#define NUM_TRGMII_CTRL 5
485
486/* TRGMII RXC control register */
487#define TRGMII_TCK_CTRL 0x10340
488#define TXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16))
489#define TXC_INV BIT(30)
490#define TCK_CTRL_RGMII_1000 TXCTL_DMWTLAT(2)
491#define TCK_CTRL_RGMII_10_100 (TXC_INV | TXCTL_DMWTLAT(2))
492
493/* TRGMII TX Drive Strength */
494#define TRGMII_TD_ODT(i) (0x10354 + 8 * (i))
495#define TD_DM_DRVP(x) ((x) & 0xf)
496#define TD_DM_DRVN(x) (((x) & 0xf) << 4)
497
498/* TRGMII Interface mode register */
499#define INTF_MODE 0x10390
500#define TRGMII_INTF_DIS BIT(0)
501#define TRGMII_MODE BIT(1)
502#define TRGMII_CENTRAL_ALIGNED BIT(2)
503#define INTF_MODE_RGMII_1000 (TRGMII_MODE | TRGMII_CENTRAL_ALIGNED)
504#define INTF_MODE_RGMII_10_100 0
505
506/* GPIO port control registers for GMAC 2*/
507#define GPIO_OD33_CTRL8 0x4c0
508#define GPIO_BIAS_CTRL 0xed0
509#define GPIO_DRV_SEL10 0xf00
510
511/* ethernet subsystem chip id register */
512#define ETHSYS_CHIPID0_3 0x0
513#define ETHSYS_CHIPID4_7 0x4
514#define MT7623_ETH 7623
515#define MT7622_ETH 7622
516#define MT7621_ETH 7621
517
518/* ethernet system control register */
519#define ETHSYS_SYSCFG 0x10
520#define SYSCFG_DRAM_TYPE_DDR2 BIT(4)
521
522/* ethernet subsystem config register */
523#define ETHSYS_SYSCFG0 0x14
524#define SYSCFG0_GE_MASK 0x3
525#define SYSCFG0_GE_MODE(x, y) (x << (12 + (y * 2)))
526#define SYSCFG0_SGMII_MASK GENMASK(9, 7)
527#define SYSCFG0_SGMII_GMAC1 ((2 << 8) & SYSCFG0_SGMII_MASK)
528#define SYSCFG0_SGMII_GMAC2 ((3 << 8) & SYSCFG0_SGMII_MASK)
529#define SYSCFG0_SGMII_GMAC1_V2 BIT(9)
530#define SYSCFG0_SGMII_GMAC2_V2 BIT(8)
531
532
533/* ethernet subsystem clock register */
534#define ETHSYS_CLKCFG0 0x2c
535#define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11)
536#define ETHSYS_TRGMII_MT7621_MASK (BIT(5) | BIT(6))
537#define ETHSYS_TRGMII_MT7621_APLL BIT(6)
538#define ETHSYS_TRGMII_MT7621_DDR_PLL BIT(5)
539
540/* ethernet reset control register */
541#define ETHSYS_RSTCTRL 0x34
542#define RSTCTRL_FE BIT(6)
543#define RSTCTRL_WDMA0 BIT(24)
544#define RSTCTRL_WDMA1 BIT(25)
545#define RSTCTRL_WDMA2 BIT(26)
546#define RSTCTRL_PPE0 BIT(31)
547#define RSTCTRL_PPE0_V2 BIT(30)
548#define RSTCTRL_PPE1 BIT(31)
549#define RSTCTRL_PPE0_V3 BIT(29)
550#define RSTCTRL_PPE1_V3 BIT(30)
551#define RSTCTRL_PPE2 BIT(31)
552#define RSTCTRL_ETH BIT(23)
553
554/* ethernet reset check idle register */
555#define ETHSYS_FE_RST_CHK_IDLE_EN 0x28
556
557/* ethernet dma channel agent map */
558#define ETHSYS_DMA_AG_MAP 0x408
559#define ETHSYS_DMA_AG_MAP_PDMA BIT(0)
560#define ETHSYS_DMA_AG_MAP_QDMA BIT(1)
561#define ETHSYS_DMA_AG_MAP_PPE BIT(2)
562
563/* Infrasys subsystem config registers */
564#define INFRA_MISC2 0x70c
565#define CO_QPHY_SEL BIT(0)
566#define GEPHY_MAC_SEL BIT(1)
567
568/* Top misc registers */
569#define USB_PHY_SWITCH_REG 0x218
570#define QPHY_SEL_MASK GENMASK(1, 0)
571#define SGMII_QPHY_SEL 0x2
572
573/* MT7628/88 specific stuff */
574#define MT7628_PDMA_OFFSET 0x0800
575#define MT7628_SDM_OFFSET 0x0c00
576
577#define MT7628_TX_BASE_PTR0 (MT7628_PDMA_OFFSET + 0x00)
578#define MT7628_TX_MAX_CNT0 (MT7628_PDMA_OFFSET + 0x04)
579#define MT7628_TX_CTX_IDX0 (MT7628_PDMA_OFFSET + 0x08)
580#define MT7628_TX_DTX_IDX0 (MT7628_PDMA_OFFSET + 0x0c)
581#define MT7628_PST_DTX_IDX0 BIT(0)
582
583#define MT7628_SDM_MAC_ADRL (MT7628_SDM_OFFSET + 0x0c)
584#define MT7628_SDM_MAC_ADRH (MT7628_SDM_OFFSET + 0x10)
585
586/* Counter / stat register */
587#define MT7628_SDM_TPCNT (MT7628_SDM_OFFSET + 0x100)
588#define MT7628_SDM_TBCNT (MT7628_SDM_OFFSET + 0x104)
589#define MT7628_SDM_RPCNT (MT7628_SDM_OFFSET + 0x108)
590#define MT7628_SDM_RBCNT (MT7628_SDM_OFFSET + 0x10c)
591#define MT7628_SDM_CS_ERR (MT7628_SDM_OFFSET + 0x110)
592
593#define MTK_FE_CDM1_FSM 0x220
594#define MTK_FE_CDM2_FSM 0x224
595#define MTK_FE_CDM3_FSM 0x238
596#define MTK_FE_CDM4_FSM 0x298
597#define MTK_FE_CDM5_FSM 0x318
598#define MTK_FE_CDM6_FSM 0x328
599#define MTK_FE_GDM1_FSM 0x228
600#define MTK_FE_GDM2_FSM 0x22C
601
602#define MTK_MAC_FSM(x) (0x1010C + ((x) * 0x100))
603
604struct mtk_rx_dma {
605 unsigned int rxd1;
606 unsigned int rxd2;
607 unsigned int rxd3;
608 unsigned int rxd4;
609} __packed __aligned(4);
610
611struct mtk_rx_dma_v2 {
612 unsigned int rxd1;
613 unsigned int rxd2;
614 unsigned int rxd3;
615 unsigned int rxd4;
616 unsigned int rxd5;
617 unsigned int rxd6;
618 unsigned int rxd7;
619 unsigned int rxd8;
620} __packed __aligned(4);
621
622struct mtk_tx_dma {
623 unsigned int txd1;
624 unsigned int txd2;
625 unsigned int txd3;
626 unsigned int txd4;
627} __packed __aligned(4);
628
629struct mtk_tx_dma_v2 {
630 unsigned int txd1;
631 unsigned int txd2;
632 unsigned int txd3;
633 unsigned int txd4;
634 unsigned int txd5;
635 unsigned int txd6;
636 unsigned int txd7;
637 unsigned int txd8;
638} __packed __aligned(4);
639
640struct mtk_eth;
641struct mtk_mac;
642
643struct mtk_xdp_stats {
644 u64 rx_xdp_redirect;
645 u64 rx_xdp_pass;
646 u64 rx_xdp_drop;
647 u64 rx_xdp_tx;
648 u64 rx_xdp_tx_errors;
649 u64 tx_xdp_xmit;
650 u64 tx_xdp_xmit_errors;
651};
652
653/* struct mtk_hw_stats - the structure that holds the traffic statistics.
654 * @stats_lock: make sure that stats operations are atomic
655 * @reg_offset: the status register offset of the SoC
656 * @syncp: the refcount
657 *
658 * All of the supported SoCs have hardware counters for traffic statistics.
659 * Whenever the status IRQ triggers we can read the latest stats from these
660 * counters and store them in this struct.
661 */
662struct mtk_hw_stats {
663 u64 tx_bytes;
664 u64 tx_packets;
665 u64 tx_skip;
666 u64 tx_collisions;
667 u64 rx_bytes;
668 u64 rx_packets;
669 u64 rx_overflow;
670 u64 rx_fcs_errors;
671 u64 rx_short_errors;
672 u64 rx_long_errors;
673 u64 rx_checksum_errors;
674 u64 rx_flow_control_packets;
675
676 struct mtk_xdp_stats xdp_stats;
677
678 spinlock_t stats_lock;
679 u32 reg_offset;
680 struct u64_stats_sync syncp;
681};
682
683enum mtk_tx_flags {
684 /* PDMA descriptor can point at 1-2 segments. This enum allows us to
685 * track how memory was allocated so that it can be freed properly.
686 */
687 MTK_TX_FLAGS_SINGLE0 = 0x01,
688 MTK_TX_FLAGS_PAGE0 = 0x02,
689};
690
691/* This enum allows us to identify how the clock is defined on the array of the
692 * clock in the order
693 */
694enum mtk_clks_map {
695 MTK_CLK_ETHIF,
696 MTK_CLK_SGMIITOP,
697 MTK_CLK_ESW,
698 MTK_CLK_GP0,
699 MTK_CLK_GP1,
700 MTK_CLK_GP2,
701 MTK_CLK_GP3,
702 MTK_CLK_XGP1,
703 MTK_CLK_XGP2,
704 MTK_CLK_XGP3,
705 MTK_CLK_CRYPTO,
706 MTK_CLK_FE,
707 MTK_CLK_TRGPLL,
708 MTK_CLK_SGMII_TX_250M,
709 MTK_CLK_SGMII_RX_250M,
710 MTK_CLK_SGMII_CDR_REF,
711 MTK_CLK_SGMII_CDR_FB,
712 MTK_CLK_SGMII2_TX_250M,
713 MTK_CLK_SGMII2_RX_250M,
714 MTK_CLK_SGMII2_CDR_REF,
715 MTK_CLK_SGMII2_CDR_FB,
716 MTK_CLK_SGMII_CK,
717 MTK_CLK_ETH2PLL,
718 MTK_CLK_WOCPU0,
719 MTK_CLK_WOCPU1,
720 MTK_CLK_NETSYS0,
721 MTK_CLK_NETSYS1,
722 MTK_CLK_ETHWARP_WOCPU2,
723 MTK_CLK_ETHWARP_WOCPU1,
724 MTK_CLK_ETHWARP_WOCPU0,
725 MTK_CLK_TOP_USXGMII_SBUS_0_SEL,
726 MTK_CLK_TOP_USXGMII_SBUS_1_SEL,
727 MTK_CLK_TOP_SGM_0_SEL,
728 MTK_CLK_TOP_SGM_1_SEL,
729 MTK_CLK_TOP_XFI_PHY_0_XTAL_SEL,
730 MTK_CLK_TOP_XFI_PHY_1_XTAL_SEL,
731 MTK_CLK_TOP_ETH_GMII_SEL,
732 MTK_CLK_TOP_ETH_REFCK_50M_SEL,
733 MTK_CLK_TOP_ETH_SYS_200M_SEL,
734 MTK_CLK_TOP_ETH_SYS_SEL,
735 MTK_CLK_TOP_ETH_XGMII_SEL,
736 MTK_CLK_TOP_ETH_MII_SEL,
737 MTK_CLK_TOP_NETSYS_SEL,
738 MTK_CLK_TOP_NETSYS_500M_SEL,
739 MTK_CLK_TOP_NETSYS_PAO_2X_SEL,
740 MTK_CLK_TOP_NETSYS_SYNC_250M_SEL,
741 MTK_CLK_TOP_NETSYS_PPEFB_250M_SEL,
742 MTK_CLK_TOP_NETSYS_WARP_SEL,
743 MTK_CLK_MAX
744};
745
746#define MT7623_CLKS_BITMAP (BIT_ULL(MTK_CLK_ETHIF) | BIT_ULL(MTK_CLK_ESW) | \
747 BIT_ULL(MTK_CLK_GP1) | BIT_ULL(MTK_CLK_GP2) | \
748 BIT_ULL(MTK_CLK_TRGPLL))
749#define MT7622_CLKS_BITMAP (BIT_ULL(MTK_CLK_ETHIF) | BIT_ULL(MTK_CLK_ESW) | \
750 BIT_ULL(MTK_CLK_GP0) | BIT_ULL(MTK_CLK_GP1) | \
751 BIT_ULL(MTK_CLK_GP2) | \
752 BIT_ULL(MTK_CLK_SGMII_TX_250M) | \
753 BIT_ULL(MTK_CLK_SGMII_RX_250M) | \
754 BIT_ULL(MTK_CLK_SGMII_CDR_REF) | \
755 BIT_ULL(MTK_CLK_SGMII_CDR_FB) | \
756 BIT_ULL(MTK_CLK_SGMII_CK) | \
757 BIT_ULL(MTK_CLK_ETH2PLL))
758#define MT7621_CLKS_BITMAP (0)
759#define MT7628_CLKS_BITMAP (0)
760#define MT7629_CLKS_BITMAP (BIT_ULL(MTK_CLK_ETHIF) | BIT_ULL(MTK_CLK_ESW) | \
761 BIT_ULL(MTK_CLK_GP0) | BIT_ULL(MTK_CLK_GP1) | \
762 BIT_ULL(MTK_CLK_GP2) | BIT_ULL(MTK_CLK_FE) | \
763 BIT_ULL(MTK_CLK_SGMII_TX_250M) | \
764 BIT_ULL(MTK_CLK_SGMII_RX_250M) | \
765 BIT_ULL(MTK_CLK_SGMII_CDR_REF) | \
766 BIT_ULL(MTK_CLK_SGMII_CDR_FB) | \
767 BIT_ULL(MTK_CLK_SGMII2_TX_250M) | \
768 BIT_ULL(MTK_CLK_SGMII2_RX_250M) | \
769 BIT_ULL(MTK_CLK_SGMII2_CDR_REF) | \
770 BIT_ULL(MTK_CLK_SGMII2_CDR_FB) | \
771 BIT_ULL(MTK_CLK_SGMII_CK) | \
772 BIT_ULL(MTK_CLK_ETH2PLL) | BIT_ULL(MTK_CLK_SGMIITOP))
773#define MT7981_CLKS_BITMAP (BIT_ULL(MTK_CLK_FE) | BIT_ULL(MTK_CLK_GP2) | \
774 BIT_ULL(MTK_CLK_GP1) | \
775 BIT_ULL(MTK_CLK_WOCPU0) | \
776 BIT_ULL(MTK_CLK_SGMII_TX_250M) | \
777 BIT_ULL(MTK_CLK_SGMII_RX_250M) | \
778 BIT_ULL(MTK_CLK_SGMII_CDR_REF) | \
779 BIT_ULL(MTK_CLK_SGMII_CDR_FB) | \
780 BIT_ULL(MTK_CLK_SGMII2_TX_250M) | \
781 BIT_ULL(MTK_CLK_SGMII2_RX_250M) | \
782 BIT_ULL(MTK_CLK_SGMII2_CDR_REF) | \
783 BIT_ULL(MTK_CLK_SGMII2_CDR_FB) | \
784 BIT_ULL(MTK_CLK_SGMII_CK))
785#define MT7986_CLKS_BITMAP (BIT_ULL(MTK_CLK_FE) | BIT_ULL(MTK_CLK_GP2) | \
786 BIT_ULL(MTK_CLK_GP1) | \
787 BIT_ULL(MTK_CLK_WOCPU1) | BIT_ULL(MTK_CLK_WOCPU0) | \
788 BIT_ULL(MTK_CLK_SGMII_TX_250M) | \
789 BIT_ULL(MTK_CLK_SGMII_RX_250M) | \
790 BIT_ULL(MTK_CLK_SGMII_CDR_REF) | \
791 BIT_ULL(MTK_CLK_SGMII_CDR_FB) | \
792 BIT_ULL(MTK_CLK_SGMII2_TX_250M) | \
793 BIT_ULL(MTK_CLK_SGMII2_RX_250M) | \
794 BIT_ULL(MTK_CLK_SGMII2_CDR_REF) | \
795 BIT_ULL(MTK_CLK_SGMII2_CDR_FB))
796#define MT7988_CLKS_BITMAP (BIT_ULL(MTK_CLK_FE) | BIT_ULL(MTK_CLK_ESW) | \
797 BIT_ULL(MTK_CLK_GP1) | BIT_ULL(MTK_CLK_GP2) | \
798 BIT_ULL(MTK_CLK_GP3) | BIT_ULL(MTK_CLK_XGP1) | \
799 BIT_ULL(MTK_CLK_XGP2) | BIT_ULL(MTK_CLK_XGP3) | \
800 BIT_ULL(MTK_CLK_CRYPTO) | \
801 BIT_ULL(MTK_CLK_SGMII_TX_250M) | \
802 BIT_ULL(MTK_CLK_SGMII_RX_250M) | \
803 BIT_ULL(MTK_CLK_SGMII2_TX_250M) | \
804 BIT_ULL(MTK_CLK_SGMII2_RX_250M) | \
805 BIT_ULL(MTK_CLK_ETHWARP_WOCPU2) | \
806 BIT_ULL(MTK_CLK_ETHWARP_WOCPU1) | \
807 BIT_ULL(MTK_CLK_ETHWARP_WOCPU0) | \
808 BIT_ULL(MTK_CLK_TOP_USXGMII_SBUS_0_SEL) | \
809 BIT_ULL(MTK_CLK_TOP_USXGMII_SBUS_1_SEL) | \
810 BIT_ULL(MTK_CLK_TOP_SGM_0_SEL) | \
811 BIT_ULL(MTK_CLK_TOP_SGM_1_SEL) | \
812 BIT_ULL(MTK_CLK_TOP_XFI_PHY_0_XTAL_SEL) | \
813 BIT_ULL(MTK_CLK_TOP_XFI_PHY_1_XTAL_SEL) | \
814 BIT_ULL(MTK_CLK_TOP_ETH_GMII_SEL) | \
815 BIT_ULL(MTK_CLK_TOP_ETH_REFCK_50M_SEL) | \
816 BIT_ULL(MTK_CLK_TOP_ETH_SYS_200M_SEL) | \
817 BIT_ULL(MTK_CLK_TOP_ETH_SYS_SEL) | \
818 BIT_ULL(MTK_CLK_TOP_ETH_XGMII_SEL) | \
819 BIT_ULL(MTK_CLK_TOP_ETH_MII_SEL) | \
820 BIT_ULL(MTK_CLK_TOP_NETSYS_SEL) | \
821 BIT_ULL(MTK_CLK_TOP_NETSYS_500M_SEL) | \
822 BIT_ULL(MTK_CLK_TOP_NETSYS_PAO_2X_SEL) | \
823 BIT_ULL(MTK_CLK_TOP_NETSYS_SYNC_250M_SEL) | \
824 BIT_ULL(MTK_CLK_TOP_NETSYS_PPEFB_250M_SEL) | \
825 BIT_ULL(MTK_CLK_TOP_NETSYS_WARP_SEL))
826
827enum mtk_dev_state {
828 MTK_HW_INIT,
829 MTK_RESETTING
830};
831
832/* PSE Port Definition */
833enum mtk_pse_port {
834 PSE_ADMA_PORT = 0,
835 PSE_GDM1_PORT,
836 PSE_GDM2_PORT,
837 PSE_PPE0_PORT,
838 PSE_PPE1_PORT,
839 PSE_QDMA_TX_PORT,
840 PSE_QDMA_RX_PORT,
841 PSE_DROP_PORT,
842 PSE_WDMA0_PORT,
843 PSE_WDMA1_PORT,
844 PSE_TDMA_PORT,
845 PSE_NONE_PORT,
846 PSE_PPE2_PORT,
847 PSE_WDMA2_PORT,
848 PSE_EIP197_PORT,
849 PSE_GDM3_PORT,
850 PSE_PORT_MAX
851};
852
853/* GMAC Identifier */
854enum mtk_gmac_id {
855 MTK_GMAC1_ID = 0,
856 MTK_GMAC2_ID,
857 MTK_GMAC3_ID,
858 MTK_GMAC_ID_MAX
859};
860
861enum mtk_tx_buf_type {
862 MTK_TYPE_SKB,
863 MTK_TYPE_XDP_TX,
864 MTK_TYPE_XDP_NDO,
865};
866
867/* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at
868 * by the TX descriptor s
869 * @skb: The SKB pointer of the packet being sent
870 * @dma_addr0: The base addr of the first segment
871 * @dma_len0: The length of the first segment
872 * @dma_addr1: The base addr of the second segment
873 * @dma_len1: The length of the second segment
874 */
875struct mtk_tx_buf {
876 enum mtk_tx_buf_type type;
877 void *data;
878
879 u16 mac_id;
880 u16 flags;
881 DEFINE_DMA_UNMAP_ADDR(dma_addr0);
882 DEFINE_DMA_UNMAP_LEN(dma_len0);
883 DEFINE_DMA_UNMAP_ADDR(dma_addr1);
884 DEFINE_DMA_UNMAP_LEN(dma_len1);
885};
886
887/* struct mtk_tx_ring - This struct holds info describing a TX ring
888 * @dma: The descriptor ring
889 * @buf: The memory pointed at by the ring
890 * @phys: The physical addr of tx_buf
891 * @next_free: Pointer to the next free descriptor
892 * @last_free: Pointer to the last free descriptor
893 * @last_free_ptr: Hardware pointer value of the last free descriptor
894 * @thresh: The threshold of minimum amount of free descriptors
895 * @free_count: QDMA uses a linked list. Track how many free descriptors
896 * are present
897 */
898struct mtk_tx_ring {
899 void *dma;
900 struct mtk_tx_buf *buf;
901 dma_addr_t phys;
902 struct mtk_tx_dma *next_free;
903 struct mtk_tx_dma *last_free;
904 u32 last_free_ptr;
905 u16 thresh;
906 atomic_t free_count;
907 int dma_size;
908 struct mtk_tx_dma *dma_pdma; /* For MT7628/88 PDMA handling */
909 dma_addr_t phys_pdma;
910 int cpu_idx;
911};
912
913/* PDMA rx ring mode */
914enum mtk_rx_flags {
915 MTK_RX_FLAGS_NORMAL = 0,
916 MTK_RX_FLAGS_HWLRO,
917 MTK_RX_FLAGS_QDMA,
918};
919
920/* struct mtk_rx_ring - This struct holds info describing a RX ring
921 * @dma: The descriptor ring
922 * @data: The memory pointed at by the ring
923 * @phys: The physical addr of rx_buf
924 * @frag_size: How big can each fragment be
925 * @buf_size: The size of each packet buffer
926 * @calc_idx: The current head of ring
927 */
928struct mtk_rx_ring {
929 void *dma;
930 u8 **data;
931 dma_addr_t phys;
932 u16 frag_size;
933 u16 buf_size;
934 u16 dma_size;
935 bool calc_idx_update;
936 u16 calc_idx;
937 u32 crx_idx_reg;
938 /* page_pool */
939 struct page_pool *page_pool;
940 struct xdp_rxq_info xdp_q;
941};
942
943enum mkt_eth_capabilities {
944 MTK_RGMII_BIT = 0,
945 MTK_TRGMII_BIT,
946 MTK_SGMII_BIT,
947 MTK_ESW_BIT,
948 MTK_GEPHY_BIT,
949 MTK_MUX_BIT,
950 MTK_INFRA_BIT,
951 MTK_SHARED_SGMII_BIT,
952 MTK_HWLRO_BIT,
953 MTK_SHARED_INT_BIT,
954 MTK_TRGMII_MT7621_CLK_BIT,
955 MTK_QDMA_BIT,
956 MTK_SOC_MT7628_BIT,
957 MTK_RSTCTRL_PPE1_BIT,
958 MTK_RSTCTRL_PPE2_BIT,
959 MTK_U3_COPHY_V2_BIT,
960 MTK_SRAM_BIT,
961 MTK_36BIT_DMA_BIT,
962
963 /* MUX BITS*/
964 MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT,
965 MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY_BIT,
966 MTK_ETH_MUX_U3_GMAC2_TO_QPHY_BIT,
967 MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII_BIT,
968 MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII_BIT,
969
970 /* PATH BITS */
971 MTK_ETH_PATH_GMAC1_RGMII_BIT,
972 MTK_ETH_PATH_GMAC1_TRGMII_BIT,
973 MTK_ETH_PATH_GMAC1_SGMII_BIT,
974 MTK_ETH_PATH_GMAC2_RGMII_BIT,
975 MTK_ETH_PATH_GMAC2_SGMII_BIT,
976 MTK_ETH_PATH_GMAC2_GEPHY_BIT,
977 MTK_ETH_PATH_GDM1_ESW_BIT,
978};
979
980/* Supported hardware group on SoCs */
981#define MTK_RGMII BIT_ULL(MTK_RGMII_BIT)
982#define MTK_TRGMII BIT_ULL(MTK_TRGMII_BIT)
983#define MTK_SGMII BIT_ULL(MTK_SGMII_BIT)
984#define MTK_ESW BIT_ULL(MTK_ESW_BIT)
985#define MTK_GEPHY BIT_ULL(MTK_GEPHY_BIT)
986#define MTK_MUX BIT_ULL(MTK_MUX_BIT)
987#define MTK_INFRA BIT_ULL(MTK_INFRA_BIT)
988#define MTK_SHARED_SGMII BIT_ULL(MTK_SHARED_SGMII_BIT)
989#define MTK_HWLRO BIT_ULL(MTK_HWLRO_BIT)
990#define MTK_SHARED_INT BIT_ULL(MTK_SHARED_INT_BIT)
991#define MTK_TRGMII_MT7621_CLK BIT_ULL(MTK_TRGMII_MT7621_CLK_BIT)
992#define MTK_QDMA BIT_ULL(MTK_QDMA_BIT)
993#define MTK_SOC_MT7628 BIT_ULL(MTK_SOC_MT7628_BIT)
994#define MTK_RSTCTRL_PPE1 BIT_ULL(MTK_RSTCTRL_PPE1_BIT)
995#define MTK_RSTCTRL_PPE2 BIT_ULL(MTK_RSTCTRL_PPE2_BIT)
996#define MTK_U3_COPHY_V2 BIT_ULL(MTK_U3_COPHY_V2_BIT)
997#define MTK_SRAM BIT_ULL(MTK_SRAM_BIT)
998#define MTK_36BIT_DMA BIT_ULL(MTK_36BIT_DMA_BIT)
999
1000#define MTK_ETH_MUX_GDM1_TO_GMAC1_ESW \
1001 BIT_ULL(MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT)
1002#define MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY \
1003 BIT_ULL(MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY_BIT)
1004#define MTK_ETH_MUX_U3_GMAC2_TO_QPHY \
1005 BIT_ULL(MTK_ETH_MUX_U3_GMAC2_TO_QPHY_BIT)
1006#define MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII \
1007 BIT_ULL(MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII_BIT)
1008#define MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII \
1009 BIT_ULL(MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII_BIT)
1010
1011/* Supported path present on SoCs */
1012#define MTK_ETH_PATH_GMAC1_RGMII BIT_ULL(MTK_ETH_PATH_GMAC1_RGMII_BIT)
1013#define MTK_ETH_PATH_GMAC1_TRGMII BIT_ULL(MTK_ETH_PATH_GMAC1_TRGMII_BIT)
1014#define MTK_ETH_PATH_GMAC1_SGMII BIT_ULL(MTK_ETH_PATH_GMAC1_SGMII_BIT)
1015#define MTK_ETH_PATH_GMAC2_RGMII BIT_ULL(MTK_ETH_PATH_GMAC2_RGMII_BIT)
1016#define MTK_ETH_PATH_GMAC2_SGMII BIT_ULL(MTK_ETH_PATH_GMAC2_SGMII_BIT)
1017#define MTK_ETH_PATH_GMAC2_GEPHY BIT_ULL(MTK_ETH_PATH_GMAC2_GEPHY_BIT)
1018#define MTK_ETH_PATH_GDM1_ESW BIT_ULL(MTK_ETH_PATH_GDM1_ESW_BIT)
1019
1020#define MTK_GMAC1_RGMII (MTK_ETH_PATH_GMAC1_RGMII | MTK_RGMII)
1021#define MTK_GMAC1_TRGMII (MTK_ETH_PATH_GMAC1_TRGMII | MTK_TRGMII)
1022#define MTK_GMAC1_SGMII (MTK_ETH_PATH_GMAC1_SGMII | MTK_SGMII)
1023#define MTK_GMAC2_RGMII (MTK_ETH_PATH_GMAC2_RGMII | MTK_RGMII)
1024#define MTK_GMAC2_SGMII (MTK_ETH_PATH_GMAC2_SGMII | MTK_SGMII)
1025#define MTK_GMAC2_GEPHY (MTK_ETH_PATH_GMAC2_GEPHY | MTK_GEPHY)
1026#define MTK_GDM1_ESW (MTK_ETH_PATH_GDM1_ESW | MTK_ESW)
1027
1028/* MUXes present on SoCs */
1029/* 0: GDM1 -> GMAC1, 1: GDM1 -> ESW */
1030#define MTK_MUX_GDM1_TO_GMAC1_ESW (MTK_ETH_MUX_GDM1_TO_GMAC1_ESW | MTK_MUX)
1031
1032/* 0: GMAC2 -> GEPHY, 1: GMAC0 -> GePHY */
1033#define MTK_MUX_GMAC2_GMAC0_TO_GEPHY \
1034 (MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY | MTK_MUX | MTK_INFRA)
1035
1036/* 0: U3 -> QPHY, 1: GMAC2 -> QPHY */
1037#define MTK_MUX_U3_GMAC2_TO_QPHY \
1038 (MTK_ETH_MUX_U3_GMAC2_TO_QPHY | MTK_MUX | MTK_INFRA)
1039
1040/* 2: GMAC1 -> SGMII, 3: GMAC2 -> SGMII */
1041#define MTK_MUX_GMAC1_GMAC2_TO_SGMII_RGMII \
1042 (MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII | MTK_MUX | \
1043 MTK_SHARED_SGMII)
1044
1045/* 0: GMACx -> GEPHY, 1: GMACx -> SGMII where x is 1 or 2 */
1046#define MTK_MUX_GMAC12_TO_GEPHY_SGMII \
1047 (MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII | MTK_MUX)
1048
1049#define MTK_HAS_CAPS(caps, _x) (((caps) & (_x)) == (_x))
1050
1051#define MT7621_CAPS (MTK_GMAC1_RGMII | MTK_GMAC1_TRGMII | \
1052 MTK_GMAC2_RGMII | MTK_SHARED_INT | \
1053 MTK_TRGMII_MT7621_CLK | MTK_QDMA)
1054
1055#define MT7622_CAPS (MTK_GMAC1_RGMII | MTK_GMAC1_SGMII | MTK_GMAC2_RGMII | \
1056 MTK_GMAC2_SGMII | MTK_GDM1_ESW | \
1057 MTK_MUX_GDM1_TO_GMAC1_ESW | \
1058 MTK_MUX_GMAC1_GMAC2_TO_SGMII_RGMII | MTK_QDMA)
1059
1060#define MT7623_CAPS (MTK_GMAC1_RGMII | MTK_GMAC1_TRGMII | MTK_GMAC2_RGMII | \
1061 MTK_QDMA)
1062
1063#define MT7628_CAPS (MTK_SHARED_INT | MTK_SOC_MT7628)
1064
1065#define MT7629_CAPS (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | MTK_GMAC2_GEPHY | \
1066 MTK_GDM1_ESW | MTK_MUX_GDM1_TO_GMAC1_ESW | \
1067 MTK_MUX_GMAC2_GMAC0_TO_GEPHY | \
1068 MTK_MUX_U3_GMAC2_TO_QPHY | \
1069 MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA)
1070
1071#define MT7981_CAPS (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | MTK_GMAC2_GEPHY | \
1072 MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \
1073 MTK_MUX_U3_GMAC2_TO_QPHY | MTK_U3_COPHY_V2 | \
1074 MTK_RSTCTRL_PPE1 | MTK_SRAM)
1075
1076#define MT7986_CAPS (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | \
1077 MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \
1078 MTK_RSTCTRL_PPE1 | MTK_SRAM)
1079
1080#define MT7988_CAPS (MTK_36BIT_DMA | MTK_GDM1_ESW | MTK_QDMA | \
1081 MTK_RSTCTRL_PPE1 | MTK_RSTCTRL_PPE2 | MTK_SRAM)
1082
1083struct mtk_tx_dma_desc_info {
1084 dma_addr_t addr;
1085 u32 size;
1086 u16 vlan_tci;
1087 u16 qid;
1088 u8 gso:1;
1089 u8 csum:1;
1090 u8 vlan:1;
1091 u8 first:1;
1092 u8 last:1;
1093};
1094
1095struct mtk_reg_map {
1096 u32 tx_irq_mask;
1097 u32 tx_irq_status;
1098 struct {
1099 u32 rx_ptr; /* rx base pointer */
1100 u32 rx_cnt_cfg; /* rx max count configuration */
1101 u32 pcrx_ptr; /* rx cpu pointer */
1102 u32 glo_cfg; /* global configuration */
1103 u32 rst_idx; /* reset index */
1104 u32 delay_irq; /* delay interrupt */
1105 u32 irq_status; /* interrupt status */
1106 u32 irq_mask; /* interrupt mask */
1107 u32 adma_rx_dbg0;
1108 u32 int_grp;
1109 } pdma;
1110 struct {
1111 u32 qtx_cfg; /* tx queue configuration */
1112 u32 qtx_sch; /* tx queue scheduler configuration */
1113 u32 rx_ptr; /* rx base pointer */
1114 u32 rx_cnt_cfg; /* rx max count configuration */
1115 u32 qcrx_ptr; /* rx cpu pointer */
1116 u32 glo_cfg; /* global configuration */
1117 u32 rst_idx; /* reset index */
1118 u32 delay_irq; /* delay interrupt */
1119 u32 fc_th; /* flow control */
1120 u32 int_grp;
1121 u32 hred; /* interrupt mask */
1122 u32 ctx_ptr; /* tx acquire cpu pointer */
1123 u32 dtx_ptr; /* tx acquire dma pointer */
1124 u32 crx_ptr; /* tx release cpu pointer */
1125 u32 drx_ptr; /* tx release dma pointer */
1126 u32 fq_head; /* fq head pointer */
1127 u32 fq_tail; /* fq tail pointer */
1128 u32 fq_count; /* fq free page count */
1129 u32 fq_blen; /* fq free page buffer length */
1130 u32 tx_sch_rate; /* tx scheduler rate control registers */
1131 } qdma;
1132 u32 gdm1_cnt;
1133 u32 gdma_to_ppe;
1134 u32 ppe_base;
1135 u32 wdma_base[3];
1136 u32 pse_iq_sta;
1137 u32 pse_oq_sta;
1138};
1139
1140/* struct mtk_eth_data - This is the structure holding all differences
1141 * among various plaforms
1142 * @reg_map Soc register map.
1143 * @ana_rgc3: The offset for register ANA_RGC3 related to
1144 * sgmiisys syscon
1145 * @caps Flags shown the extra capability for the SoC
1146 * @hw_features Flags shown HW features
1147 * @required_clks Flags shown the bitmap for required clocks on
1148 * the target SoC
1149 * @required_pctl A bool value to show whether the SoC requires
1150 * the extra setup for those pins used by GMAC.
1151 * @hash_offset Flow table hash offset.
1152 * @version SoC version.
1153 * @foe_entry_size Foe table entry size.
1154 * @has_accounting Bool indicating support for accounting of
1155 * offloaded flows.
1156 * @txd_size Tx DMA descriptor size.
1157 * @rxd_size Rx DMA descriptor size.
1158 * @rx_irq_done_mask Rx irq done register mask.
1159 * @rx_dma_l4_valid Rx DMA valid register mask.
1160 * @dma_max_len Max DMA tx/rx buffer length.
1161 * @dma_len_offset Tx/Rx DMA length field offset.
1162 */
1163struct mtk_soc_data {
1164 const struct mtk_reg_map *reg_map;
1165 u32 ana_rgc3;
1166 u64 caps;
1167 u64 required_clks;
1168 bool required_pctl;
1169 u8 offload_version;
1170 u8 hash_offset;
1171 u8 version;
1172 u16 foe_entry_size;
1173 netdev_features_t hw_features;
1174 bool has_accounting;
1175 bool disable_pll_modes;
1176 struct {
1177 u32 txd_size;
1178 u32 rxd_size;
1179 u32 rx_irq_done_mask;
1180 u32 rx_dma_l4_valid;
1181 u32 dma_max_len;
1182 u32 dma_len_offset;
1183 } txrx;
1184};
1185
1186#define MTK_DMA_MONITOR_TIMEOUT msecs_to_jiffies(1000)
1187
1188/* currently no SoC has more than 3 macs */
1189#define MTK_MAX_DEVS 3
1190
1191/* struct mtk_eth - This is the main datasructure for holding the state
1192 * of the driver
1193 * @dev: The device pointer
1194 * @dev: The device pointer used for dma mapping/alloc
1195 * @base: The mapped register i/o base
1196 * @page_lock: Make sure that register operations are atomic
1197 * @tx_irq__lock: Make sure that IRQ register operations are atomic
1198 * @rx_irq__lock: Make sure that IRQ register operations are atomic
1199 * @dim_lock: Make sure that Net DIM operations are atomic
1200 * @dummy_dev: we run 2 netdevs on 1 physical DMA ring and need a
1201 * dummy for NAPI to work
1202 * @netdev: The netdev instances
1203 * @mac: Each netdev is linked to a physical MAC
1204 * @irq: The IRQ that we are using
1205 * @msg_enable: Ethtool msg level
1206 * @ethsys: The register map pointing at the range used to setup
1207 * MII modes
1208 * @infra: The register map pointing at the range used to setup
1209 * SGMII and GePHY path
1210 * @sgmii_pcs: Pointers to mtk-pcs-lynxi phylink_pcs instances
1211 * @pctl: The register map pointing at the range used to setup
1212 * GMAC port drive/slew values
1213 * @dma_refcnt: track how many netdevs are using the DMA engine
1214 * @tx_ring: Pointer to the memory holding info about the TX ring
1215 * @rx_ring: Pointer to the memory holding info about the RX ring
1216 * @rx_ring_qdma: Pointer to the memory holding info about the QDMA RX ring
1217 * @tx_napi: The TX NAPI struct
1218 * @rx_napi: The RX NAPI struct
1219 * @rx_events: Net DIM RX event counter
1220 * @rx_packets: Net DIM RX packet counter
1221 * @rx_bytes: Net DIM RX byte counter
1222 * @rx_dim: Net DIM RX context
1223 * @tx_events: Net DIM TX event counter
1224 * @tx_packets: Net DIM TX packet counter
1225 * @tx_bytes: Net DIM TX byte counter
1226 * @tx_dim: Net DIM TX context
1227 * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring
1228 * @phy_scratch_ring: physical address of scratch_ring
1229 * @scratch_head: The scratch memory that scratch_ring points to.
1230 * @clks: clock array for all clocks required
1231 * @mii_bus: If there is a bus we need to create an instance for it
1232 * @pending_work: The workqueue used to reset the dma ring
1233 * @state: Initialization and runtime state of the device
1234 * @soc: Holding specific data among vaious SoCs
1235 */
1236
1237struct mtk_eth {
1238 struct device *dev;
1239 struct device *dma_dev;
1240 void __iomem *base;
1241 void *sram_base;
1242 spinlock_t page_lock;
1243 spinlock_t tx_irq_lock;
1244 spinlock_t rx_irq_lock;
1245 struct net_device dummy_dev;
1246 struct net_device *netdev[MTK_MAX_DEVS];
1247 struct mtk_mac *mac[MTK_MAX_DEVS];
1248 int irq[3];
1249 u32 msg_enable;
1250 unsigned long sysclk;
1251 struct regmap *ethsys;
1252 struct regmap *infra;
1253 struct phylink_pcs *sgmii_pcs[MTK_MAX_DEVS];
1254 struct regmap *pctl;
1255 bool hwlro;
1256 refcount_t dma_refcnt;
1257 struct mtk_tx_ring tx_ring;
1258 struct mtk_rx_ring rx_ring[MTK_MAX_RX_RING_NUM];
1259 struct mtk_rx_ring rx_ring_qdma;
1260 struct napi_struct tx_napi;
1261 struct napi_struct rx_napi;
1262 void *scratch_ring;
1263 dma_addr_t phy_scratch_ring;
1264 void *scratch_head;
1265 struct clk *clks[MTK_CLK_MAX];
1266
1267 struct mii_bus *mii_bus;
1268 struct work_struct pending_work;
1269 unsigned long state;
1270
1271 const struct mtk_soc_data *soc;
1272
1273 spinlock_t dim_lock;
1274
1275 u32 rx_events;
1276 u32 rx_packets;
1277 u32 rx_bytes;
1278 struct dim rx_dim;
1279
1280 u32 tx_events;
1281 u32 tx_packets;
1282 u32 tx_bytes;
1283 struct dim tx_dim;
1284
1285 int ip_align;
1286
1287 struct metadata_dst *dsa_meta[MTK_MAX_DSA_PORTS];
1288
1289 struct mtk_ppe *ppe[2];
1290 struct rhashtable flow_table;
1291
1292 struct bpf_prog __rcu *prog;
1293
1294 struct {
1295 struct delayed_work monitor_work;
1296 u32 wdidx;
1297 u8 wdma_hang_count;
1298 u8 qdma_hang_count;
1299 u8 adma_hang_count;
1300 } reset;
1301};
1302
1303/* struct mtk_mac - the structure that holds the info about the MACs of the
1304 * SoC
1305 * @id: The number of the MAC
1306 * @interface: Interface mode kept for detecting change in hw settings
1307 * @of_node: Our devicetree node
1308 * @hw: Backpointer to our main datastruture
1309 * @hw_stats: Packet statistics counter
1310 */
1311struct mtk_mac {
1312 int id;
1313 phy_interface_t interface;
1314 int speed;
1315 struct device_node *of_node;
1316 struct phylink *phylink;
1317 struct phylink_config phylink_config;
1318 struct mtk_eth *hw;
1319 struct mtk_hw_stats *hw_stats;
1320 __be32 hwlro_ip[MTK_MAX_LRO_IP_CNT];
1321 int hwlro_ip_cnt;
1322 unsigned int syscfg0;
1323 struct notifier_block device_notifier;
1324};
1325
1326/* the struct describing the SoC. these are declared in the soc_xyz.c files */
1327extern const struct of_device_id of_mtk_match[];
1328
1329static inline bool mtk_is_netsys_v1(struct mtk_eth *eth)
1330{
1331 return eth->soc->version == 1;
1332}
1333
1334static inline bool mtk_is_netsys_v2_or_greater(struct mtk_eth *eth)
1335{
1336 return eth->soc->version > 1;
1337}
1338
1339static inline bool mtk_is_netsys_v3_or_greater(struct mtk_eth *eth)
1340{
1341 return eth->soc->version > 2;
1342}
1343
1344static inline struct mtk_foe_entry *
1345mtk_foe_get_entry(struct mtk_ppe *ppe, u16 hash)
1346{
1347 const struct mtk_soc_data *soc = ppe->eth->soc;
1348
1349 return ppe->foe_table + hash * soc->foe_entry_size;
1350}
1351
1352static inline u32 mtk_get_ib1_ts_mask(struct mtk_eth *eth)
1353{
1354 if (mtk_is_netsys_v2_or_greater(eth))
1355 return MTK_FOE_IB1_BIND_TIMESTAMP_V2;
1356
1357 return MTK_FOE_IB1_BIND_TIMESTAMP;
1358}
1359
1360static inline u32 mtk_get_ib1_ppoe_mask(struct mtk_eth *eth)
1361{
1362 if (mtk_is_netsys_v2_or_greater(eth))
1363 return MTK_FOE_IB1_BIND_PPPOE_V2;
1364
1365 return MTK_FOE_IB1_BIND_PPPOE;
1366}
1367
1368static inline u32 mtk_get_ib1_vlan_tag_mask(struct mtk_eth *eth)
1369{
1370 if (mtk_is_netsys_v2_or_greater(eth))
1371 return MTK_FOE_IB1_BIND_VLAN_TAG_V2;
1372
1373 return MTK_FOE_IB1_BIND_VLAN_TAG;
1374}
1375
1376static inline u32 mtk_get_ib1_vlan_layer_mask(struct mtk_eth *eth)
1377{
1378 if (mtk_is_netsys_v2_or_greater(eth))
1379 return MTK_FOE_IB1_BIND_VLAN_LAYER_V2;
1380
1381 return MTK_FOE_IB1_BIND_VLAN_LAYER;
1382}
1383
1384static inline u32 mtk_prep_ib1_vlan_layer(struct mtk_eth *eth, u32 val)
1385{
1386 if (mtk_is_netsys_v2_or_greater(eth))
1387 return FIELD_PREP(MTK_FOE_IB1_BIND_VLAN_LAYER_V2, val);
1388
1389 return FIELD_PREP(MTK_FOE_IB1_BIND_VLAN_LAYER, val);
1390}
1391
1392static inline u32 mtk_get_ib1_vlan_layer(struct mtk_eth *eth, u32 val)
1393{
1394 if (mtk_is_netsys_v2_or_greater(eth))
1395 return FIELD_GET(MTK_FOE_IB1_BIND_VLAN_LAYER_V2, val);
1396
1397 return FIELD_GET(MTK_FOE_IB1_BIND_VLAN_LAYER, val);
1398}
1399
1400static inline u32 mtk_get_ib1_pkt_type_mask(struct mtk_eth *eth)
1401{
1402 if (mtk_is_netsys_v2_or_greater(eth))
1403 return MTK_FOE_IB1_PACKET_TYPE_V2;
1404
1405 return MTK_FOE_IB1_PACKET_TYPE;
1406}
1407
1408static inline u32 mtk_get_ib1_pkt_type(struct mtk_eth *eth, u32 val)
1409{
1410 if (mtk_is_netsys_v2_or_greater(eth))
1411 return FIELD_GET(MTK_FOE_IB1_PACKET_TYPE_V2, val);
1412
1413 return FIELD_GET(MTK_FOE_IB1_PACKET_TYPE, val);
1414}
1415
1416static inline u32 mtk_get_ib2_multicast_mask(struct mtk_eth *eth)
1417{
1418 if (mtk_is_netsys_v2_or_greater(eth))
1419 return MTK_FOE_IB2_MULTICAST_V2;
1420
1421 return MTK_FOE_IB2_MULTICAST;
1422}
1423
1424/* read the hardware status register */
1425void mtk_stats_update_mac(struct mtk_mac *mac);
1426
1427void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg);
1428u32 mtk_r32(struct mtk_eth *eth, unsigned reg);
1429u32 mtk_m32(struct mtk_eth *eth, u32 mask, u32 set, unsigned int reg);
1430
1431int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id);
1432int mtk_gmac_gephy_path_setup(struct mtk_eth *eth, int mac_id);
1433int mtk_gmac_rgmii_path_setup(struct mtk_eth *eth, int mac_id);
1434
1435int mtk_eth_offload_init(struct mtk_eth *eth);
1436int mtk_eth_setup_tc(struct net_device *dev, enum tc_setup_type type,
1437 void *type_data);
1438int mtk_flow_offload_cmd(struct mtk_eth *eth, struct flow_cls_offload *cls,
1439 int ppe_index);
1440void mtk_flow_offload_cleanup(struct mtk_eth *eth, struct list_head *list);
1441void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev);
1442
1443
1444#endif /* MTK_ETH_H */
1/* This program is free software; you can redistribute it and/or modify
2 * it under the terms of the GNU General Public License as published by
3 * the Free Software Foundation; version 2 of the License
4 *
5 * This program is distributed in the hope that it will be useful,
6 * but WITHOUT ANY WARRANTY; without even the implied warranty of
7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8 * GNU General Public License for more details.
9 *
10 * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org>
11 * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org>
12 * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com>
13 */
14
15#ifndef MTK_ETH_H
16#define MTK_ETH_H
17
18#define MTK_QDMA_PAGE_SIZE 2048
19#define MTK_MAX_RX_LENGTH 1536
20#define MTK_TX_DMA_BUF_LEN 0x3fff
21#define MTK_DMA_SIZE 256
22#define MTK_NAPI_WEIGHT 64
23#define MTK_MAC_COUNT 2
24#define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
25#define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN)
26#define MTK_DMA_DUMMY_DESC 0xffffffff
27#define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \
28 NETIF_MSG_PROBE | \
29 NETIF_MSG_LINK | \
30 NETIF_MSG_TIMER | \
31 NETIF_MSG_IFDOWN | \
32 NETIF_MSG_IFUP | \
33 NETIF_MSG_RX_ERR | \
34 NETIF_MSG_TX_ERR)
35#define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \
36 NETIF_F_RXCSUM | \
37 NETIF_F_HW_VLAN_CTAG_TX | \
38 NETIF_F_HW_VLAN_CTAG_RX | \
39 NETIF_F_SG | NETIF_F_TSO | \
40 NETIF_F_TSO6 | \
41 NETIF_F_IPV6_CSUM)
42#define NEXT_RX_DESP_IDX(X) (((X) + 1) & (MTK_DMA_SIZE - 1))
43
44/* Frame Engine Global Reset Register */
45#define MTK_RST_GL 0x04
46#define RST_GL_PSE BIT(0)
47
48/* Frame Engine Interrupt Status Register */
49#define MTK_INT_STATUS2 0x08
50#define MTK_GDM1_AF BIT(28)
51#define MTK_GDM2_AF BIT(29)
52
53/* Frame Engine Interrupt Grouping Register */
54#define MTK_FE_INT_GRP 0x20
55
56/* CDMP Exgress Control Register */
57#define MTK_CDMP_EG_CTRL 0x404
58
59/* GDM Exgress Control Register */
60#define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000))
61#define MTK_GDMA_ICS_EN BIT(22)
62#define MTK_GDMA_TCS_EN BIT(21)
63#define MTK_GDMA_UCS_EN BIT(20)
64
65/* Unicast Filter MAC Address Register - Low */
66#define MTK_GDMA_MAC_ADRL(x) (0x508 + (x * 0x1000))
67
68/* Unicast Filter MAC Address Register - High */
69#define MTK_GDMA_MAC_ADRH(x) (0x50C + (x * 0x1000))
70
71/* QDMA TX Queue Configuration Registers */
72#define MTK_QTX_CFG(x) (0x1800 + (x * 0x10))
73#define QDMA_RES_THRES 4
74
75/* QDMA TX Queue Scheduler Registers */
76#define MTK_QTX_SCH(x) (0x1804 + (x * 0x10))
77
78/* QDMA RX Base Pointer Register */
79#define MTK_QRX_BASE_PTR0 0x1900
80
81/* QDMA RX Maximum Count Register */
82#define MTK_QRX_MAX_CNT0 0x1904
83
84/* QDMA RX CPU Pointer Register */
85#define MTK_QRX_CRX_IDX0 0x1908
86
87/* QDMA RX DMA Pointer Register */
88#define MTK_QRX_DRX_IDX0 0x190C
89
90/* QDMA Global Configuration Register */
91#define MTK_QDMA_GLO_CFG 0x1A04
92#define MTK_RX_2B_OFFSET BIT(31)
93#define MTK_RX_BT_32DWORDS (3 << 11)
94#define MTK_TX_WB_DDONE BIT(6)
95#define MTK_DMA_SIZE_16DWORDS (2 << 4)
96#define MTK_RX_DMA_BUSY BIT(3)
97#define MTK_TX_DMA_BUSY BIT(1)
98#define MTK_RX_DMA_EN BIT(2)
99#define MTK_TX_DMA_EN BIT(0)
100#define MTK_DMA_BUSY_TIMEOUT HZ
101
102/* QDMA Reset Index Register */
103#define MTK_QDMA_RST_IDX 0x1A08
104#define MTK_PST_DRX_IDX0 BIT(16)
105
106/* QDMA Delay Interrupt Register */
107#define MTK_QDMA_DELAY_INT 0x1A0C
108
109/* QDMA Flow Control Register */
110#define MTK_QDMA_FC_THRES 0x1A10
111#define FC_THRES_DROP_MODE BIT(20)
112#define FC_THRES_DROP_EN (7 << 16)
113#define FC_THRES_MIN 0x4444
114
115/* QDMA Interrupt Status Register */
116#define MTK_QMTK_INT_STATUS 0x1A18
117#define MTK_RX_DONE_INT1 BIT(17)
118#define MTK_RX_DONE_INT0 BIT(16)
119#define MTK_TX_DONE_INT3 BIT(3)
120#define MTK_TX_DONE_INT2 BIT(2)
121#define MTK_TX_DONE_INT1 BIT(1)
122#define MTK_TX_DONE_INT0 BIT(0)
123#define MTK_RX_DONE_INT (MTK_RX_DONE_INT0 | MTK_RX_DONE_INT1)
124#define MTK_TX_DONE_INT (MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \
125 MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3)
126
127/* QDMA Interrupt Status Register */
128#define MTK_QDMA_INT_MASK 0x1A1C
129
130/* QDMA Interrupt Mask Register */
131#define MTK_QDMA_HRED2 0x1A44
132
133/* QDMA TX Forward CPU Pointer Register */
134#define MTK_QTX_CTX_PTR 0x1B00
135
136/* QDMA TX Forward DMA Pointer Register */
137#define MTK_QTX_DTX_PTR 0x1B04
138
139/* QDMA TX Release CPU Pointer Register */
140#define MTK_QTX_CRX_PTR 0x1B10
141
142/* QDMA TX Release DMA Pointer Register */
143#define MTK_QTX_DRX_PTR 0x1B14
144
145/* QDMA FQ Head Pointer Register */
146#define MTK_QDMA_FQ_HEAD 0x1B20
147
148/* QDMA FQ Head Pointer Register */
149#define MTK_QDMA_FQ_TAIL 0x1B24
150
151/* QDMA FQ Free Page Counter Register */
152#define MTK_QDMA_FQ_CNT 0x1B28
153
154/* QDMA FQ Free Page Buffer Length Register */
155#define MTK_QDMA_FQ_BLEN 0x1B2C
156
157/* GMA1 Received Good Byte Count Register */
158#define MTK_GDM1_TX_GBCNT 0x2400
159#define MTK_STAT_OFFSET 0x40
160
161/* QDMA descriptor txd4 */
162#define TX_DMA_CHKSUM (0x7 << 29)
163#define TX_DMA_TSO BIT(28)
164#define TX_DMA_FPORT_SHIFT 25
165#define TX_DMA_FPORT_MASK 0x7
166#define TX_DMA_INS_VLAN BIT(16)
167
168/* QDMA descriptor txd3 */
169#define TX_DMA_OWNER_CPU BIT(31)
170#define TX_DMA_LS0 BIT(30)
171#define TX_DMA_PLEN0(_x) (((_x) & MTK_TX_DMA_BUF_LEN) << 16)
172#define TX_DMA_SWC BIT(14)
173#define TX_DMA_SDL(_x) (((_x) & 0x3fff) << 16)
174
175/* QDMA descriptor rxd2 */
176#define RX_DMA_DONE BIT(31)
177#define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16)
178#define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff)
179
180/* QDMA descriptor rxd3 */
181#define RX_DMA_VID(_x) ((_x) & 0xfff)
182
183/* QDMA descriptor rxd4 */
184#define RX_DMA_L4_VALID BIT(24)
185#define RX_DMA_FPORT_SHIFT 19
186#define RX_DMA_FPORT_MASK 0x7
187
188/* PHY Indirect Access Control registers */
189#define MTK_PHY_IAC 0x10004
190#define PHY_IAC_ACCESS BIT(31)
191#define PHY_IAC_READ BIT(19)
192#define PHY_IAC_WRITE BIT(18)
193#define PHY_IAC_START BIT(16)
194#define PHY_IAC_ADDR_SHIFT 20
195#define PHY_IAC_REG_SHIFT 25
196#define PHY_IAC_TIMEOUT HZ
197
198/* Mac control registers */
199#define MTK_MAC_MCR(x) (0x10100 + (x * 0x100))
200#define MAC_MCR_MAX_RX_1536 BIT(24)
201#define MAC_MCR_IPG_CFG (BIT(18) | BIT(16))
202#define MAC_MCR_FORCE_MODE BIT(15)
203#define MAC_MCR_TX_EN BIT(14)
204#define MAC_MCR_RX_EN BIT(13)
205#define MAC_MCR_BACKOFF_EN BIT(9)
206#define MAC_MCR_BACKPR_EN BIT(8)
207#define MAC_MCR_FORCE_RX_FC BIT(5)
208#define MAC_MCR_FORCE_TX_FC BIT(4)
209#define MAC_MCR_SPEED_1000 BIT(3)
210#define MAC_MCR_SPEED_100 BIT(2)
211#define MAC_MCR_FORCE_DPX BIT(1)
212#define MAC_MCR_FORCE_LINK BIT(0)
213#define MAC_MCR_FIXED_LINK (MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | \
214 MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | \
215 MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | \
216 MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_RX_FC | \
217 MAC_MCR_FORCE_TX_FC | MAC_MCR_SPEED_1000 | \
218 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_LINK)
219
220/* GPIO port control registers for GMAC 2*/
221#define GPIO_OD33_CTRL8 0x4c0
222#define GPIO_BIAS_CTRL 0xed0
223#define GPIO_DRV_SEL10 0xf00
224
225/* ethernet subsystem config register */
226#define ETHSYS_SYSCFG0 0x14
227#define SYSCFG0_GE_MASK 0x3
228#define SYSCFG0_GE_MODE(x, y) (x << (12 + (y * 2)))
229
230struct mtk_rx_dma {
231 unsigned int rxd1;
232 unsigned int rxd2;
233 unsigned int rxd3;
234 unsigned int rxd4;
235} __packed __aligned(4);
236
237struct mtk_tx_dma {
238 unsigned int txd1;
239 unsigned int txd2;
240 unsigned int txd3;
241 unsigned int txd4;
242} __packed __aligned(4);
243
244struct mtk_eth;
245struct mtk_mac;
246
247/* struct mtk_hw_stats - the structure that holds the traffic statistics.
248 * @stats_lock: make sure that stats operations are atomic
249 * @reg_offset: the status register offset of the SoC
250 * @syncp: the refcount
251 *
252 * All of the supported SoCs have hardware counters for traffic statistics.
253 * Whenever the status IRQ triggers we can read the latest stats from these
254 * counters and store them in this struct.
255 */
256struct mtk_hw_stats {
257 u64 tx_bytes;
258 u64 tx_packets;
259 u64 tx_skip;
260 u64 tx_collisions;
261 u64 rx_bytes;
262 u64 rx_packets;
263 u64 rx_overflow;
264 u64 rx_fcs_errors;
265 u64 rx_short_errors;
266 u64 rx_long_errors;
267 u64 rx_checksum_errors;
268 u64 rx_flow_control_packets;
269
270 spinlock_t stats_lock;
271 u32 reg_offset;
272 struct u64_stats_sync syncp;
273};
274
275/* PDMA descriptor can point at 1-2 segments. This enum allows us to track how
276 * memory was allocated so that it can be freed properly
277 */
278enum mtk_tx_flags {
279 MTK_TX_FLAGS_SINGLE0 = 0x01,
280 MTK_TX_FLAGS_PAGE0 = 0x02,
281};
282
283/* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at
284 * by the TX descriptor s
285 * @skb: The SKB pointer of the packet being sent
286 * @dma_addr0: The base addr of the first segment
287 * @dma_len0: The length of the first segment
288 * @dma_addr1: The base addr of the second segment
289 * @dma_len1: The length of the second segment
290 */
291struct mtk_tx_buf {
292 struct sk_buff *skb;
293 u32 flags;
294 DEFINE_DMA_UNMAP_ADDR(dma_addr0);
295 DEFINE_DMA_UNMAP_LEN(dma_len0);
296 DEFINE_DMA_UNMAP_ADDR(dma_addr1);
297 DEFINE_DMA_UNMAP_LEN(dma_len1);
298};
299
300/* struct mtk_tx_ring - This struct holds info describing a TX ring
301 * @dma: The descriptor ring
302 * @buf: The memory pointed at by the ring
303 * @phys: The physical addr of tx_buf
304 * @next_free: Pointer to the next free descriptor
305 * @last_free: Pointer to the last free descriptor
306 * @thresh: The threshold of minimum amount of free descriptors
307 * @free_count: QDMA uses a linked list. Track how many free descriptors
308 * are present
309 */
310struct mtk_tx_ring {
311 struct mtk_tx_dma *dma;
312 struct mtk_tx_buf *buf;
313 dma_addr_t phys;
314 struct mtk_tx_dma *next_free;
315 struct mtk_tx_dma *last_free;
316 u16 thresh;
317 atomic_t free_count;
318};
319
320/* struct mtk_rx_ring - This struct holds info describing a RX ring
321 * @dma: The descriptor ring
322 * @data: The memory pointed at by the ring
323 * @phys: The physical addr of rx_buf
324 * @frag_size: How big can each fragment be
325 * @buf_size: The size of each packet buffer
326 * @calc_idx: The current head of ring
327 */
328struct mtk_rx_ring {
329 struct mtk_rx_dma *dma;
330 u8 **data;
331 dma_addr_t phys;
332 u16 frag_size;
333 u16 buf_size;
334 u16 calc_idx;
335};
336
337/* currently no SoC has more than 2 macs */
338#define MTK_MAX_DEVS 2
339
340/* struct mtk_eth - This is the main datasructure for holding the state
341 * of the driver
342 * @dev: The device pointer
343 * @base: The mapped register i/o base
344 * @page_lock: Make sure that register operations are atomic
345 * @dummy_dev: we run 2 netdevs on 1 physical DMA ring and need a
346 * dummy for NAPI to work
347 * @netdev: The netdev instances
348 * @mac: Each netdev is linked to a physical MAC
349 * @irq: The IRQ that we are using
350 * @msg_enable: Ethtool msg level
351 * @ethsys: The register map pointing at the range used to setup
352 * MII modes
353 * @pctl: The register map pointing at the range used to setup
354 * GMAC port drive/slew values
355 * @dma_refcnt: track how many netdevs are using the DMA engine
356 * @tx_ring: Pointer to the memore holding info about the TX ring
357 * @rx_ring: Pointer to the memore holding info about the RX ring
358 * @rx_napi: The NAPI struct
359 * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring
360 * @scratch_head: The scratch memory that scratch_ring points to.
361 * @clk_ethif: The ethif clock
362 * @clk_esw: The switch clock
363 * @clk_gp1: The gmac1 clock
364 * @clk_gp2: The gmac2 clock
365 * @mii_bus: If there is a bus we need to create an instance for it
366 */
367
368struct mtk_eth {
369 struct device *dev;
370 void __iomem *base;
371 struct reset_control *rstc;
372 spinlock_t page_lock;
373 struct net_device dummy_dev;
374 struct net_device *netdev[MTK_MAX_DEVS];
375 struct mtk_mac *mac[MTK_MAX_DEVS];
376 int irq;
377 u32 msg_enable;
378 unsigned long sysclk;
379 struct regmap *ethsys;
380 struct regmap *pctl;
381 atomic_t dma_refcnt;
382 struct mtk_tx_ring tx_ring;
383 struct mtk_rx_ring rx_ring;
384 struct napi_struct rx_napi;
385 struct mtk_tx_dma *scratch_ring;
386 void *scratch_head;
387 struct clk *clk_ethif;
388 struct clk *clk_esw;
389 struct clk *clk_gp1;
390 struct clk *clk_gp2;
391 struct mii_bus *mii_bus;
392};
393
394/* struct mtk_mac - the structure that holds the info about the MACs of the
395 * SoC
396 * @id: The number of the MAC
397 * @of_node: Our devicetree node
398 * @hw: Backpointer to our main datastruture
399 * @hw_stats: Packet statistics counter
400 * @phy_dev: The attached PHY if available
401 * @pending_work: The workqueue used to reset the dma ring
402 */
403struct mtk_mac {
404 int id;
405 struct device_node *of_node;
406 struct mtk_eth *hw;
407 struct mtk_hw_stats *hw_stats;
408 struct phy_device *phy_dev;
409 struct work_struct pending_work;
410};
411
412/* the struct describing the SoC. these are declared in the soc_xyz.c files */
413extern const struct of_device_id of_mtk_match[];
414
415/* read the hardware status register */
416void mtk_stats_update_mac(struct mtk_mac *mac);
417
418void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg);
419u32 mtk_r32(struct mtk_eth *eth, unsigned reg);
420
421#endif /* MTK_ETH_H */