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
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.
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>
18 #include <linux/dma-mapping.h>
19 #include <linux/netdevice.h>
20 #include <linux/of_net.h>
21 #include <linux/u64_stats_sync.h>
22 #include <linux/refcount.h>
24 #define MTK_QDMA_PAGE_SIZE 2048
25 #define MTK_MAX_RX_LENGTH 1536
26 #define MTK_TX_DMA_BUF_LEN 0x3fff
27 #define MTK_DMA_SIZE 256
28 #define MTK_NAPI_WEIGHT 64
29 #define MTK_MAC_COUNT 2
30 #define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
31 #define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN)
32 #define MTK_DMA_DUMMY_DESC 0xffffffff
33 #define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \
41 #define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \
43 NETIF_F_HW_VLAN_CTAG_TX | \
44 NETIF_F_HW_VLAN_CTAG_RX | \
45 NETIF_F_SG | NETIF_F_TSO | \
48 #define NEXT_RX_DESP_IDX(X, Y) (((X) + 1) & ((Y) - 1))
50 #define MTK_MAX_RX_RING_NUM 4
51 #define MTK_HW_LRO_DMA_SIZE 8
53 #define MTK_MAX_LRO_RX_LENGTH (4096 * 3)
54 #define MTK_MAX_LRO_IP_CNT 2
55 #define MTK_HW_LRO_TIMER_UNIT 1 /* 20 us */
56 #define MTK_HW_LRO_REFRESH_TIME 50000 /* 1 sec. */
57 #define MTK_HW_LRO_AGG_TIME 10 /* 200us */
58 #define MTK_HW_LRO_AGE_TIME 50 /* 1ms */
59 #define MTK_HW_LRO_MAX_AGG_CNT 64
60 #define MTK_HW_LRO_BW_THRE 3000
61 #define MTK_HW_LRO_REPLACE_DELTA 1000
62 #define MTK_HW_LRO_SDL_REMAIN_ROOM 1522
64 /* Frame Engine Global Reset Register */
65 #define MTK_RST_GL 0x04
66 #define RST_GL_PSE BIT(0)
68 /* Frame Engine Interrupt Status Register */
69 #define MTK_INT_STATUS2 0x08
70 #define MTK_GDM1_AF BIT(28)
71 #define MTK_GDM2_AF BIT(29)
73 /* PDMA HW LRO Alter Flow Timer Register */
74 #define MTK_PDMA_LRO_ALT_REFRESH_TIMER 0x1c
76 /* Frame Engine Interrupt Grouping Register */
77 #define MTK_FE_INT_GRP 0x20
79 /* CDMP Ingress Control Register */
80 #define MTK_CDMQ_IG_CTRL 0x1400
81 #define MTK_CDMQ_STAG_EN BIT(0)
83 /* CDMP Exgress Control Register */
84 #define MTK_CDMP_EG_CTRL 0x404
86 /* GDM Exgress Control Register */
87 #define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000))
88 #define MTK_GDMA_ICS_EN BIT(22)
89 #define MTK_GDMA_TCS_EN BIT(21)
90 #define MTK_GDMA_UCS_EN BIT(20)
92 /* Unicast Filter MAC Address Register - Low */
93 #define MTK_GDMA_MAC_ADRL(x) (0x508 + (x * 0x1000))
95 /* Unicast Filter MAC Address Register - High */
96 #define MTK_GDMA_MAC_ADRH(x) (0x50C + (x * 0x1000))
98 /* PDMA RX Base Pointer Register */
99 #define MTK_PRX_BASE_PTR0 0x900
100 #define MTK_PRX_BASE_PTR_CFG(x) (MTK_PRX_BASE_PTR0 + (x * 0x10))
102 /* PDMA RX Maximum Count Register */
103 #define MTK_PRX_MAX_CNT0 0x904
104 #define MTK_PRX_MAX_CNT_CFG(x) (MTK_PRX_MAX_CNT0 + (x * 0x10))
106 /* PDMA RX CPU Pointer Register */
107 #define MTK_PRX_CRX_IDX0 0x908
108 #define MTK_PRX_CRX_IDX_CFG(x) (MTK_PRX_CRX_IDX0 + (x * 0x10))
110 /* PDMA HW LRO Control Registers */
111 #define MTK_PDMA_LRO_CTRL_DW0 0x980
112 #define MTK_LRO_EN BIT(0)
113 #define MTK_L3_CKS_UPD_EN BIT(7)
114 #define MTK_LRO_ALT_PKT_CNT_MODE BIT(21)
115 #define MTK_LRO_RING_RELINQUISH_REQ (0x7 << 26)
116 #define MTK_LRO_RING_RELINQUISH_DONE (0x7 << 29)
118 #define MTK_PDMA_LRO_CTRL_DW1 0x984
119 #define MTK_PDMA_LRO_CTRL_DW2 0x988
120 #define MTK_PDMA_LRO_CTRL_DW3 0x98c
121 #define MTK_ADMA_MODE BIT(15)
122 #define MTK_LRO_MIN_RXD_SDL (MTK_HW_LRO_SDL_REMAIN_ROOM << 16)
124 /* PDMA Global Configuration Register */
125 #define MTK_PDMA_GLO_CFG 0xa04
126 #define MTK_MULTI_EN BIT(10)
128 /* PDMA Reset Index Register */
129 #define MTK_PDMA_RST_IDX 0xa08
130 #define MTK_PST_DRX_IDX0 BIT(16)
131 #define MTK_PST_DRX_IDX_CFG(x) (MTK_PST_DRX_IDX0 << (x))
133 /* PDMA Delay Interrupt Register */
134 #define MTK_PDMA_DELAY_INT 0xa0c
135 #define MTK_PDMA_DELAY_RX_EN BIT(15)
136 #define MTK_PDMA_DELAY_RX_PINT 4
137 #define MTK_PDMA_DELAY_RX_PINT_SHIFT 8
138 #define MTK_PDMA_DELAY_RX_PTIME 4
139 #define MTK_PDMA_DELAY_RX_DELAY \
140 (MTK_PDMA_DELAY_RX_EN | MTK_PDMA_DELAY_RX_PTIME | \
141 (MTK_PDMA_DELAY_RX_PINT << MTK_PDMA_DELAY_RX_PINT_SHIFT))
143 /* PDMA Interrupt Status Register */
144 #define MTK_PDMA_INT_STATUS 0xa20
146 /* PDMA Interrupt Mask Register */
147 #define MTK_PDMA_INT_MASK 0xa28
149 /* PDMA HW LRO Alter Flow Delta Register */
150 #define MTK_PDMA_LRO_ALT_SCORE_DELTA 0xa4c
152 /* PDMA Interrupt grouping registers */
153 #define MTK_PDMA_INT_GRP1 0xa50
154 #define MTK_PDMA_INT_GRP2 0xa54
156 /* PDMA HW LRO IP Setting Registers */
157 #define MTK_LRO_RX_RING0_DIP_DW0 0xb04
158 #define MTK_LRO_DIP_DW0_CFG(x) (MTK_LRO_RX_RING0_DIP_DW0 + (x * 0x40))
159 #define MTK_RING_MYIP_VLD BIT(9)
161 /* PDMA HW LRO Ring Control Registers */
162 #define MTK_LRO_RX_RING0_CTRL_DW1 0xb28
163 #define MTK_LRO_RX_RING0_CTRL_DW2 0xb2c
164 #define MTK_LRO_RX_RING0_CTRL_DW3 0xb30
165 #define MTK_LRO_CTRL_DW1_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW1 + (x * 0x40))
166 #define MTK_LRO_CTRL_DW2_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW2 + (x * 0x40))
167 #define MTK_LRO_CTRL_DW3_CFG(x) (MTK_LRO_RX_RING0_CTRL_DW3 + (x * 0x40))
168 #define MTK_RING_AGE_TIME_L ((MTK_HW_LRO_AGE_TIME & 0x3ff) << 22)
169 #define MTK_RING_AGE_TIME_H ((MTK_HW_LRO_AGE_TIME >> 10) & 0x3f)
170 #define MTK_RING_AUTO_LERAN_MODE (3 << 6)
171 #define MTK_RING_VLD BIT(8)
172 #define MTK_RING_MAX_AGG_TIME ((MTK_HW_LRO_AGG_TIME & 0xffff) << 10)
173 #define MTK_RING_MAX_AGG_CNT_L ((MTK_HW_LRO_MAX_AGG_CNT & 0x3f) << 26)
174 #define MTK_RING_MAX_AGG_CNT_H ((MTK_HW_LRO_MAX_AGG_CNT >> 6) & 0x3)
176 /* QDMA TX Queue Configuration Registers */
177 #define MTK_QTX_CFG(x) (0x1800 + (x * 0x10))
178 #define QDMA_RES_THRES 4
180 /* QDMA TX Queue Scheduler Registers */
181 #define MTK_QTX_SCH(x) (0x1804 + (x * 0x10))
183 /* QDMA RX Base Pointer Register */
184 #define MTK_QRX_BASE_PTR0 0x1900
186 /* QDMA RX Maximum Count Register */
187 #define MTK_QRX_MAX_CNT0 0x1904
189 /* QDMA RX CPU Pointer Register */
190 #define MTK_QRX_CRX_IDX0 0x1908
192 /* QDMA RX DMA Pointer Register */
193 #define MTK_QRX_DRX_IDX0 0x190C
195 /* QDMA Global Configuration Register */
196 #define MTK_QDMA_GLO_CFG 0x1A04
197 #define MTK_RX_2B_OFFSET BIT(31)
198 #define MTK_RX_BT_32DWORDS (3 << 11)
199 #define MTK_NDP_CO_PRO BIT(10)
200 #define MTK_TX_WB_DDONE BIT(6)
201 #define MTK_DMA_SIZE_16DWORDS (2 << 4)
202 #define MTK_RX_DMA_BUSY BIT(3)
203 #define MTK_TX_DMA_BUSY BIT(1)
204 #define MTK_RX_DMA_EN BIT(2)
205 #define MTK_TX_DMA_EN BIT(0)
206 #define MTK_DMA_BUSY_TIMEOUT HZ
208 /* QDMA Reset Index Register */
209 #define MTK_QDMA_RST_IDX 0x1A08
211 /* QDMA Delay Interrupt Register */
212 #define MTK_QDMA_DELAY_INT 0x1A0C
214 /* QDMA Flow Control Register */
215 #define MTK_QDMA_FC_THRES 0x1A10
216 #define FC_THRES_DROP_MODE BIT(20)
217 #define FC_THRES_DROP_EN (7 << 16)
218 #define FC_THRES_MIN 0x4444
220 /* QDMA Interrupt Status Register */
221 #define MTK_QMTK_INT_STATUS 0x1A18
222 #define MTK_RX_DONE_DLY BIT(30)
223 #define MTK_RX_DONE_INT3 BIT(19)
224 #define MTK_RX_DONE_INT2 BIT(18)
225 #define MTK_RX_DONE_INT1 BIT(17)
226 #define MTK_RX_DONE_INT0 BIT(16)
227 #define MTK_TX_DONE_INT3 BIT(3)
228 #define MTK_TX_DONE_INT2 BIT(2)
229 #define MTK_TX_DONE_INT1 BIT(1)
230 #define MTK_TX_DONE_INT0 BIT(0)
231 #define MTK_RX_DONE_INT MTK_RX_DONE_DLY
232 #define MTK_TX_DONE_INT (MTK_TX_DONE_INT0 | MTK_TX_DONE_INT1 | \
233 MTK_TX_DONE_INT2 | MTK_TX_DONE_INT3)
235 /* QDMA Interrupt grouping registers */
236 #define MTK_QDMA_INT_GRP1 0x1a20
237 #define MTK_QDMA_INT_GRP2 0x1a24
238 #define MTK_RLS_DONE_INT BIT(0)
240 /* QDMA Interrupt Status Register */
241 #define MTK_QDMA_INT_MASK 0x1A1C
243 /* QDMA Interrupt Mask Register */
244 #define MTK_QDMA_HRED2 0x1A44
246 /* QDMA TX Forward CPU Pointer Register */
247 #define MTK_QTX_CTX_PTR 0x1B00
249 /* QDMA TX Forward DMA Pointer Register */
250 #define MTK_QTX_DTX_PTR 0x1B04
252 /* QDMA TX Release CPU Pointer Register */
253 #define MTK_QTX_CRX_PTR 0x1B10
255 /* QDMA TX Release DMA Pointer Register */
256 #define MTK_QTX_DRX_PTR 0x1B14
258 /* QDMA FQ Head Pointer Register */
259 #define MTK_QDMA_FQ_HEAD 0x1B20
261 /* QDMA FQ Head Pointer Register */
262 #define MTK_QDMA_FQ_TAIL 0x1B24
264 /* QDMA FQ Free Page Counter Register */
265 #define MTK_QDMA_FQ_CNT 0x1B28
267 /* QDMA FQ Free Page Buffer Length Register */
268 #define MTK_QDMA_FQ_BLEN 0x1B2C
270 /* GMA1 Received Good Byte Count Register */
271 #define MTK_GDM1_TX_GBCNT 0x2400
272 #define MTK_STAT_OFFSET 0x40
274 /* QDMA descriptor txd4 */
275 #define TX_DMA_CHKSUM (0x7 << 29)
276 #define TX_DMA_TSO BIT(28)
277 #define TX_DMA_FPORT_SHIFT 25
278 #define TX_DMA_FPORT_MASK 0x7
279 #define TX_DMA_INS_VLAN BIT(16)
281 /* QDMA descriptor txd3 */
282 #define TX_DMA_OWNER_CPU BIT(31)
283 #define TX_DMA_LS0 BIT(30)
284 #define TX_DMA_PLEN0(_x) (((_x) & MTK_TX_DMA_BUF_LEN) << 16)
285 #define TX_DMA_SWC BIT(14)
286 #define TX_DMA_SDL(_x) (((_x) & 0x3fff) << 16)
288 /* QDMA descriptor rxd2 */
289 #define RX_DMA_DONE BIT(31)
290 #define RX_DMA_PLEN0(_x) (((_x) & 0x3fff) << 16)
291 #define RX_DMA_GET_PLEN0(_x) (((_x) >> 16) & 0x3fff)
293 /* QDMA descriptor rxd3 */
294 #define RX_DMA_VID(_x) ((_x) & 0xfff)
296 /* QDMA descriptor rxd4 */
297 #define RX_DMA_L4_VALID BIT(24)
298 #define RX_DMA_FPORT_SHIFT 19
299 #define RX_DMA_FPORT_MASK 0x7
301 /* PHY Indirect Access Control registers */
302 #define MTK_PHY_IAC 0x10004
303 #define PHY_IAC_ACCESS BIT(31)
304 #define PHY_IAC_READ BIT(19)
305 #define PHY_IAC_WRITE BIT(18)
306 #define PHY_IAC_START BIT(16)
307 #define PHY_IAC_ADDR_SHIFT 20
308 #define PHY_IAC_REG_SHIFT 25
309 #define PHY_IAC_TIMEOUT HZ
311 #define MTK_MAC_MISC 0x1000c
312 #define MTK_MUX_TO_ESW BIT(0)
314 /* Mac control registers */
315 #define MTK_MAC_MCR(x) (0x10100 + (x * 0x100))
316 #define MAC_MCR_MAX_RX_1536 BIT(24)
317 #define MAC_MCR_IPG_CFG (BIT(18) | BIT(16))
318 #define MAC_MCR_FORCE_MODE BIT(15)
319 #define MAC_MCR_TX_EN BIT(14)
320 #define MAC_MCR_RX_EN BIT(13)
321 #define MAC_MCR_BACKOFF_EN BIT(9)
322 #define MAC_MCR_BACKPR_EN BIT(8)
323 #define MAC_MCR_FORCE_RX_FC BIT(5)
324 #define MAC_MCR_FORCE_TX_FC BIT(4)
325 #define MAC_MCR_SPEED_1000 BIT(3)
326 #define MAC_MCR_SPEED_100 BIT(2)
327 #define MAC_MCR_FORCE_DPX BIT(1)
328 #define MAC_MCR_FORCE_LINK BIT(0)
329 #define MAC_MCR_FIXED_LINK (MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | \
330 MAC_MCR_FORCE_MODE | MAC_MCR_TX_EN | \
331 MAC_MCR_RX_EN | MAC_MCR_BACKOFF_EN | \
332 MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_RX_FC | \
333 MAC_MCR_FORCE_TX_FC | MAC_MCR_SPEED_1000 | \
334 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_LINK)
336 /* TRGMII RXC control register */
337 #define TRGMII_RCK_CTRL 0x10300
338 #define DQSI0(x) ((x << 0) & GENMASK(6, 0))
339 #define DQSI1(x) ((x << 8) & GENMASK(14, 8))
340 #define RXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16))
341 #define RXC_DQSISEL BIT(30)
342 #define RCK_CTRL_RGMII_1000 (RXC_DQSISEL | RXCTL_DMWTLAT(2) | DQSI1(16))
343 #define RCK_CTRL_RGMII_10_100 RXCTL_DMWTLAT(2)
345 /* TRGMII RXC control register */
346 #define TRGMII_TCK_CTRL 0x10340
347 #define TXCTL_DMWTLAT(x) ((x << 16) & GENMASK(18, 16))
348 #define TXC_INV BIT(30)
349 #define TCK_CTRL_RGMII_1000 TXCTL_DMWTLAT(2)
350 #define TCK_CTRL_RGMII_10_100 (TXC_INV | TXCTL_DMWTLAT(2))
352 /* TRGMII Interface mode register */
353 #define INTF_MODE 0x10390
354 #define TRGMII_INTF_DIS BIT(0)
355 #define TRGMII_MODE BIT(1)
356 #define TRGMII_CENTRAL_ALIGNED BIT(2)
357 #define INTF_MODE_RGMII_1000 (TRGMII_MODE | TRGMII_CENTRAL_ALIGNED)
358 #define INTF_MODE_RGMII_10_100 0
360 /* GPIO port control registers for GMAC 2*/
361 #define GPIO_OD33_CTRL8 0x4c0
362 #define GPIO_BIAS_CTRL 0xed0
363 #define GPIO_DRV_SEL10 0xf00
365 /* ethernet subsystem chip id register */
366 #define ETHSYS_CHIPID0_3 0x0
367 #define ETHSYS_CHIPID4_7 0x4
368 #define MT7623_ETH 7623
369 #define MT7622_ETH 7622
370 #define MT7621_ETH 7621
372 /* ethernet subsystem config register */
373 #define ETHSYS_SYSCFG0 0x14
374 #define SYSCFG0_GE_MASK 0x3
375 #define SYSCFG0_GE_MODE(x, y) (x << (12 + (y * 2)))
376 #define SYSCFG0_SGMII_MASK GENMASK(9, 8)
377 #define SYSCFG0_SGMII_GMAC1 ((2 << 8) & SYSCFG0_SGMII_MASK)
378 #define SYSCFG0_SGMII_GMAC2 ((3 << 8) & SYSCFG0_SGMII_MASK)
379 #define SYSCFG0_SGMII_GMAC1_V2 BIT(9)
380 #define SYSCFG0_SGMII_GMAC2_V2 BIT(8)
383 /* ethernet subsystem clock register */
384 #define ETHSYS_CLKCFG0 0x2c
385 #define ETHSYS_TRGMII_CLK_SEL362_5 BIT(11)
387 /* ethernet reset control register */
388 #define ETHSYS_RSTCTRL 0x34
389 #define RSTCTRL_FE BIT(6)
390 #define RSTCTRL_PPE BIT(31)
392 /* SGMII subsystem config registers */
393 /* Register to auto-negotiation restart */
394 #define SGMSYS_PCS_CONTROL_1 0x0
395 #define SGMII_AN_RESTART BIT(9)
397 /* Register to programmable link timer, the unit in 2 * 8ns */
398 #define SGMSYS_PCS_LINK_TIMER 0x18
399 #define SGMII_LINK_TIMER_DEFAULT (0x186a0 & GENMASK(19, 0))
401 /* Register to control remote fault */
402 #define SGMSYS_SGMII_MODE 0x20
403 #define SGMII_REMOTE_FAULT_DIS BIT(8)
405 /* Register to power up QPHY */
406 #define SGMSYS_QPHY_PWR_STATE_CTRL 0xe8
407 #define SGMII_PHYA_PWD BIT(4)
409 /* Infrasys subsystem config registers */
410 #define INFRA_MISC2 0x70c
411 #define CO_QPHY_SEL BIT(0)
412 #define GEPHY_MAC_SEL BIT(1)
419 } __packed __aligned(4);
426 } __packed __aligned(4);
431 /* struct mtk_hw_stats - the structure that holds the traffic statistics.
432 * @stats_lock: make sure that stats operations are atomic
433 * @reg_offset: the status register offset of the SoC
434 * @syncp: the refcount
436 * All of the supported SoCs have hardware counters for traffic statistics.
437 * Whenever the status IRQ triggers we can read the latest stats from these
438 * counters and store them in this struct.
440 struct mtk_hw_stats {
451 u64 rx_checksum_errors;
452 u64 rx_flow_control_packets;
454 spinlock_t stats_lock;
456 struct u64_stats_sync syncp;
460 /* PDMA descriptor can point at 1-2 segments. This enum allows us to
461 * track how memory was allocated so that it can be freed properly.
463 MTK_TX_FLAGS_SINGLE0 = 0x01,
464 MTK_TX_FLAGS_PAGE0 = 0x02,
466 /* MTK_TX_FLAGS_FPORTx allows tracking which port the transmitted
467 * SKB out instead of looking up through hardware TX descriptor.
469 MTK_TX_FLAGS_FPORT0 = 0x04,
470 MTK_TX_FLAGS_FPORT1 = 0x08,
473 /* This enum allows us to identify how the clock is defined on the array of the
483 MTK_CLK_SGMII_TX_250M,
484 MTK_CLK_SGMII_RX_250M,
485 MTK_CLK_SGMII_CDR_REF,
486 MTK_CLK_SGMII_CDR_FB,
492 #define MT7623_CLKS_BITMAP (BIT(MTK_CLK_ETHIF) | BIT(MTK_CLK_ESW) | \
493 BIT(MTK_CLK_GP1) | BIT(MTK_CLK_GP2) | \
495 #define MT7622_CLKS_BITMAP (BIT(MTK_CLK_ETHIF) | BIT(MTK_CLK_ESW) | \
496 BIT(MTK_CLK_GP0) | BIT(MTK_CLK_GP1) | \
498 BIT(MTK_CLK_SGMII_TX_250M) | \
499 BIT(MTK_CLK_SGMII_RX_250M) | \
500 BIT(MTK_CLK_SGMII_CDR_REF) | \
501 BIT(MTK_CLK_SGMII_CDR_FB) | \
502 BIT(MTK_CLK_SGMII_CK) | \
503 BIT(MTK_CLK_ETH2PLL))
504 #define MT7621_CLKS_BITMAP (0)
511 /* struct mtk_tx_buf - This struct holds the pointers to the memory pointed at
512 * by the TX descriptor s
513 * @skb: The SKB pointer of the packet being sent
514 * @dma_addr0: The base addr of the first segment
515 * @dma_len0: The length of the first segment
516 * @dma_addr1: The base addr of the second segment
517 * @dma_len1: The length of the second segment
522 DEFINE_DMA_UNMAP_ADDR(dma_addr0);
523 DEFINE_DMA_UNMAP_LEN(dma_len0);
524 DEFINE_DMA_UNMAP_ADDR(dma_addr1);
525 DEFINE_DMA_UNMAP_LEN(dma_len1);
528 /* struct mtk_tx_ring - This struct holds info describing a TX ring
529 * @dma: The descriptor ring
530 * @buf: The memory pointed at by the ring
531 * @phys: The physical addr of tx_buf
532 * @next_free: Pointer to the next free descriptor
533 * @last_free: Pointer to the last free descriptor
534 * @thresh: The threshold of minimum amount of free descriptors
535 * @free_count: QDMA uses a linked list. Track how many free descriptors
539 struct mtk_tx_dma *dma;
540 struct mtk_tx_buf *buf;
542 struct mtk_tx_dma *next_free;
543 struct mtk_tx_dma *last_free;
548 /* PDMA rx ring mode */
550 MTK_RX_FLAGS_NORMAL = 0,
555 /* struct mtk_rx_ring - This struct holds info describing a RX ring
556 * @dma: The descriptor ring
557 * @data: The memory pointed at by the ring
558 * @phys: The physical addr of rx_buf
559 * @frag_size: How big can each fragment be
560 * @buf_size: The size of each packet buffer
561 * @calc_idx: The current head of ring
564 struct mtk_rx_dma *dma;
570 bool calc_idx_update;
576 MTK_ETH_MUX_GDM1_TO_GMAC1_ESW,
577 MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY,
578 MTK_ETH_MUX_U3_GMAC2_TO_QPHY,
579 MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII,
580 MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII,
585 MTK_ETH_PATH_GMAC1_RGMII,
586 MTK_ETH_PATH_GMAC1_TRGMII,
587 MTK_ETH_PATH_GMAC1_SGMII,
588 MTK_ETH_PATH_GMAC2_RGMII,
589 MTK_ETH_PATH_GMAC2_SGMII,
590 MTK_ETH_PATH_GMAC2_GEPHY,
591 MTK_ETH_PATH_GDM1_ESW,
595 /* Supported hardware group on SoCs */
596 #define MTK_RGMII BIT(0)
597 #define MTK_TRGMII BIT(1)
598 #define MTK_SGMII BIT(2)
599 #define MTK_ESW BIT(3)
600 #define MTK_GEPHY BIT(4)
601 #define MTK_MUX BIT(5)
602 #define MTK_INFRA BIT(6)
603 #define MTK_SHARED_SGMII BIT(7)
604 #define MTK_HWLRO BIT(8)
605 #define MTK_SHARED_INT BIT(9)
607 /* Supported path present on SoCs */
608 #define MTK_PATH_BIT(x) BIT((x) + 10)
610 #define MTK_GMAC1_RGMII \
611 (MTK_PATH_BIT(MTK_ETH_PATH_GMAC1_RGMII) | MTK_RGMII)
613 #define MTK_GMAC1_TRGMII \
614 (MTK_PATH_BIT(MTK_ETH_PATH_GMAC1_TRGMII) | MTK_TRGMII)
616 #define MTK_GMAC1_SGMII \
617 (MTK_PATH_BIT(MTK_ETH_PATH_GMAC1_SGMII) | MTK_SGMII)
619 #define MTK_GMAC2_RGMII \
620 (MTK_PATH_BIT(MTK_ETH_PATH_GMAC2_RGMII) | MTK_RGMII)
622 #define MTK_GMAC2_SGMII \
623 (MTK_PATH_BIT(MTK_ETH_PATH_GMAC2_SGMII) | MTK_SGMII)
625 #define MTK_GMAC2_GEPHY \
626 (MTK_PATH_BIT(MTK_ETH_PATH_GMAC2_GEPHY) | MTK_GEPHY)
628 #define MTK_GDM1_ESW \
629 (MTK_PATH_BIT(MTK_ETH_PATH_GDM1_ESW) | MTK_ESW)
631 #define MTK_MUX_BIT(x) BIT((x) + 20)
633 /* MUXes present on SoCs */
634 /* 0: GDM1 -> GMAC1, 1: GDM1 -> ESW */
635 #define MTK_MUX_GDM1_TO_GMAC1_ESW \
636 (MTK_MUX_BIT(MTK_ETH_MUX_GDM1_TO_GMAC1_ESW) | MTK_MUX)
638 /* 0: GMAC2 -> GEPHY, 1: GMAC0 -> GePHY */
639 #define MTK_MUX_GMAC2_GMAC0_TO_GEPHY \
640 (MTK_MUX_BIT(MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY) | MTK_MUX | MTK_INFRA)
642 /* 0: U3 -> QPHY, 1: GMAC2 -> QPHY */
643 #define MTK_MUX_U3_GMAC2_TO_QPHY \
644 (MTK_MUX_BIT(MTK_ETH_MUX_U3_GMAC2_TO_QPHY) | MTK_MUX | MTK_INFRA)
646 /* 2: GMAC1 -> SGMII, 3: GMAC2 -> SGMII */
647 #define MTK_MUX_GMAC1_GMAC2_TO_SGMII_RGMII \
648 (MTK_MUX_BIT(MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII) | MTK_MUX | \
651 /* 0: GMACx -> GEPHY, 1: GMACx -> SGMII where x is 1 or 2 */
652 #define MTK_MUX_GMAC12_TO_GEPHY_SGMII \
653 (MTK_MUX_BIT(MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII) | MTK_MUX)
655 #define MTK_HAS_CAPS(caps, _x) (((caps) & (_x)) == (_x))
657 #define MT7622_CAPS (MTK_GMAC1_RGMII | MTK_GMAC1_SGMII | MTK_GMAC2_RGMII | \
658 MTK_GMAC2_SGMII | MTK_GDM1_ESW | \
659 MTK_MUX_GDM1_TO_GMAC1_ESW | \
660 MTK_MUX_GMAC1_GMAC2_TO_SGMII_RGMII)
662 #define MT7623_CAPS (MTK_GMAC1_RGMII | MTK_GMAC1_TRGMII | MTK_GMAC2_RGMII)
664 #define MT7629_CAPS (MTK_GMAC1_SGMII | MTK_GMAC2_SGMII | MTK_GMAC2_GEPHY | \
665 MTK_GDM1_ESW | MTK_MUX_GDM1_TO_GMAC1_ESW | \
666 MTK_MUX_GMAC2_GMAC0_TO_GEPHY | \
667 MTK_MUX_U3_GMAC2_TO_QPHY | \
668 MTK_MUX_GMAC12_TO_GEPHY_SGMII)
670 /* struct mtk_eth_data - This is the structure holding all differences
671 * among various plaforms
672 * @ana_rgc3: The offset for register ANA_RGC3 related to
674 * @caps Flags shown the extra capability for the SoC
675 * @required_clks Flags shown the bitmap for required clocks on
677 * @required_pctl A bool value to show whether the SoC requires
678 * the extra setup for those pins used by GMAC.
680 struct mtk_soc_data {
687 /* currently no SoC has more than 2 macs */
688 #define MTK_MAX_DEVS 2
690 #define MTK_SGMII_PHYSPEED_AN BIT(31)
691 #define MTK_SGMII_PHYSPEED_MASK GENMASK(0, 2)
692 #define MTK_SGMII_PHYSPEED_1000 BIT(0)
693 #define MTK_SGMII_PHYSPEED_2500 BIT(1)
694 #define MTK_HAS_FLAGS(flags, _x) (((flags) & (_x)) == (_x))
696 /* struct mtk_sgmii - This is the structure holding sgmii regmap and its
698 * @regmap: The register map pointing at the range used to setup
700 * @flags: The enum refers to which mode the sgmii wants to run on
701 * @ana_rgc3: The offset refers to register ANA_RGC3 related to regmap
705 struct regmap *regmap[MTK_MAX_DEVS];
706 u32 flags[MTK_MAX_DEVS];
710 /* struct mtk_eth - This is the main datasructure for holding the state
712 * @dev: The device pointer
713 * @base: The mapped register i/o base
714 * @page_lock: Make sure that register operations are atomic
715 * @tx_irq__lock: Make sure that IRQ register operations are atomic
716 * @rx_irq__lock: Make sure that IRQ register operations are atomic
717 * @dummy_dev: we run 2 netdevs on 1 physical DMA ring and need a
718 * dummy for NAPI to work
719 * @netdev: The netdev instances
720 * @mac: Each netdev is linked to a physical MAC
721 * @irq: The IRQ that we are using
722 * @msg_enable: Ethtool msg level
723 * @ethsys: The register map pointing at the range used to setup
725 * @infra: The register map pointing at the range used to setup
726 * SGMII and GePHY path
727 * @pctl: The register map pointing at the range used to setup
728 * GMAC port drive/slew values
729 * @dma_refcnt: track how many netdevs are using the DMA engine
730 * @tx_ring: Pointer to the memory holding info about the TX ring
731 * @rx_ring: Pointer to the memory holding info about the RX ring
732 * @rx_ring_qdma: Pointer to the memory holding info about the QDMA RX ring
733 * @tx_napi: The TX NAPI struct
734 * @rx_napi: The RX NAPI struct
735 * @scratch_ring: Newer SoCs need memory for a second HW managed TX ring
736 * @phy_scratch_ring: physical address of scratch_ring
737 * @scratch_head: The scratch memory that scratch_ring points to.
738 * @clks: clock array for all clocks required
739 * @mii_bus: If there is a bus we need to create an instance for it
740 * @pending_work: The workqueue used to reset the dma ring
741 * @state: Initialization and runtime state of the device
742 * @soc: Holding specific data among vaious SoCs
748 spinlock_t page_lock;
749 spinlock_t tx_irq_lock;
750 spinlock_t rx_irq_lock;
751 struct net_device dummy_dev;
752 struct net_device *netdev[MTK_MAX_DEVS];
753 struct mtk_mac *mac[MTK_MAX_DEVS];
756 unsigned long sysclk;
757 struct regmap *ethsys;
758 struct regmap *infra;
759 struct mtk_sgmii *sgmii;
762 refcount_t dma_refcnt;
763 struct mtk_tx_ring tx_ring;
764 struct mtk_rx_ring rx_ring[MTK_MAX_RX_RING_NUM];
765 struct mtk_rx_ring rx_ring_qdma;
766 struct napi_struct tx_napi;
767 struct napi_struct rx_napi;
768 struct mtk_tx_dma *scratch_ring;
769 dma_addr_t phy_scratch_ring;
771 struct clk *clks[MTK_CLK_MAX];
773 struct mii_bus *mii_bus;
774 struct work_struct pending_work;
777 const struct mtk_soc_data *soc;
780 /* struct mtk_mac - the structure that holds the info about the MACs of the
782 * @id: The number of the MAC
783 * @ge_mode: Interface mode kept for setup restoring
784 * @of_node: Our devicetree node
785 * @hw: Backpointer to our main datastruture
786 * @hw_stats: Packet statistics counter
787 * @trgmii Indicate if the MAC uses TRGMII connected to internal
793 struct device_node *of_node;
795 struct mtk_hw_stats *hw_stats;
796 __be32 hwlro_ip[MTK_MAX_LRO_IP_CNT];
801 /* the struct describing the SoC. these are declared in the soc_xyz.c files */
802 extern const struct of_device_id of_mtk_match[];
804 /* read the hardware status register */
805 void mtk_stats_update_mac(struct mtk_mac *mac);
807 void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg);
808 u32 mtk_r32(struct mtk_eth *eth, unsigned reg);
810 int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *np,
812 int mtk_sgmii_setup_mode_an(struct mtk_sgmii *ss, int id);
813 int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id);
814 int mtk_setup_hw_path(struct mtk_eth *eth, int mac_id, int phymode);
816 #endif /* MTK_ETH_H */