1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2014-2020 Broadcom
4  */
5 
6 #ifndef __BCMGENET_H__
7 #define __BCMGENET_H__
8 
9 #include <linux/skbuff.h>
10 #include <linux/netdevice.h>
11 #include <linux/spinlock.h>
12 #include <linux/clk.h>
13 #include <linux/mii.h>
14 #include <linux/if_vlan.h>
15 #include <linux/phy.h>
16 #include <linux/dim.h>
17 #include <linux/ethtool.h>
18 
19 #include "../unimac.h"
20 
21 /* total number of Buffer Descriptors, same for Rx/Tx */
22 #define TOTAL_DESC				256
23 
24 /* which ring is descriptor based */
25 #define DESC_INDEX				16
26 
27 /* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(6) + FCS(4) = 1528.
28  * 1536 is multiple of 256 bytes
29  */
30 #define ENET_BRCM_TAG_LEN	6
31 #define ENET_PAD		8
32 #define ENET_MAX_MTU_SIZE	(ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
33 				 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)
34 #define DMA_MAX_BURST_LENGTH    0x10
35 
36 /* misc. configuration */
37 #define MAX_NUM_OF_FS_RULES		16
38 #define CLEAR_ALL_HFB			0xFF
39 #define DMA_FC_THRESH_HI		(TOTAL_DESC >> 4)
40 #define DMA_FC_THRESH_LO		5
41 
42 /* 64B receive/transmit status block */
43 struct status_64 {
44 	u32	length_status;		/* length and peripheral status */
45 	u32	ext_status;		/* Extended status*/
46 	u32	rx_csum;		/* partial rx checksum */
47 	u32	unused1[9];		/* unused */
48 	u32	tx_csum_info;		/* Tx checksum info. */
49 	u32	unused2[3];		/* unused */
50 };
51 
52 /* Rx status bits */
53 #define STATUS_RX_EXT_MASK		0x1FFFFF
54 #define STATUS_RX_CSUM_MASK		0xFFFF
55 #define STATUS_RX_CSUM_OK		0x10000
56 #define STATUS_RX_CSUM_FR		0x20000
57 #define STATUS_RX_PROTO_TCP		0
58 #define STATUS_RX_PROTO_UDP		1
59 #define STATUS_RX_PROTO_ICMP		2
60 #define STATUS_RX_PROTO_OTHER		3
61 #define STATUS_RX_PROTO_MASK		3
62 #define STATUS_RX_PROTO_SHIFT		18
63 #define STATUS_FILTER_INDEX_MASK	0xFFFF
64 /* Tx status bits */
65 #define STATUS_TX_CSUM_START_MASK	0X7FFF
66 #define STATUS_TX_CSUM_START_SHIFT	16
67 #define STATUS_TX_CSUM_PROTO_UDP	0x8000
68 #define STATUS_TX_CSUM_OFFSET_MASK	0x7FFF
69 #define STATUS_TX_CSUM_LV		0x80000000
70 
71 /* DMA Descriptor */
72 #define DMA_DESC_LENGTH_STATUS	0x00	/* in bytes of data in buffer */
73 #define DMA_DESC_ADDRESS_LO	0x04	/* lower bits of PA */
74 #define DMA_DESC_ADDRESS_HI	0x08	/* upper 32 bits of PA, GENETv4+ */
75 
76 /* Rx/Tx common counter group */
77 struct bcmgenet_pkt_counters {
78 	u32	cnt_64;		/* RO Received/Transmited 64 bytes packet */
79 	u32	cnt_127;	/* RO Rx/Tx 127 bytes packet */
80 	u32	cnt_255;	/* RO Rx/Tx 65-255 bytes packet */
81 	u32	cnt_511;	/* RO Rx/Tx 256-511 bytes packet */
82 	u32	cnt_1023;	/* RO Rx/Tx 512-1023 bytes packet */
83 	u32	cnt_1518;	/* RO Rx/Tx 1024-1518 bytes packet */
84 	u32	cnt_mgv;	/* RO Rx/Tx 1519-1522 good VLAN packet */
85 	u32	cnt_2047;	/* RO Rx/Tx 1522-2047 bytes packet*/
86 	u32	cnt_4095;	/* RO Rx/Tx 2048-4095 bytes packet*/
87 	u32	cnt_9216;	/* RO Rx/Tx 4096-9216 bytes packet*/
88 };
89 
90 /* RSV, Receive Status Vector */
91 struct bcmgenet_rx_counters {
92 	struct  bcmgenet_pkt_counters pkt_cnt;
93 	u32	pkt;		/* RO (0x428) Received pkt count*/
94 	u32	bytes;		/* RO Received byte count */
95 	u32	mca;		/* RO # of Received multicast pkt */
96 	u32	bca;		/* RO # of Receive broadcast pkt */
97 	u32	fcs;		/* RO # of Received FCS error  */
98 	u32	cf;		/* RO # of Received control frame pkt*/
99 	u32	pf;		/* RO # of Received pause frame pkt */
100 	u32	uo;		/* RO # of unknown op code pkt */
101 	u32	aln;		/* RO # of alignment error count */
102 	u32	flr;		/* RO # of frame length out of range count */
103 	u32	cde;		/* RO # of code error pkt */
104 	u32	fcr;		/* RO # of carrier sense error pkt */
105 	u32	ovr;		/* RO # of oversize pkt*/
106 	u32	jbr;		/* RO # of jabber count */
107 	u32	mtue;		/* RO # of MTU error pkt*/
108 	u32	pok;		/* RO # of Received good pkt */
109 	u32	uc;		/* RO # of unicast pkt */
110 	u32	ppp;		/* RO # of PPP pkt */
111 	u32	rcrc;		/* RO (0x470),# of CRC match pkt */
112 };
113 
114 /* TSV, Transmit Status Vector */
115 struct bcmgenet_tx_counters {
116 	struct bcmgenet_pkt_counters pkt_cnt;
117 	u32	pkts;		/* RO (0x4a8) Transmited pkt */
118 	u32	mca;		/* RO # of xmited multicast pkt */
119 	u32	bca;		/* RO # of xmited broadcast pkt */
120 	u32	pf;		/* RO # of xmited pause frame count */
121 	u32	cf;		/* RO # of xmited control frame count */
122 	u32	fcs;		/* RO # of xmited FCS error count */
123 	u32	ovr;		/* RO # of xmited oversize pkt */
124 	u32	drf;		/* RO # of xmited deferral pkt */
125 	u32	edf;		/* RO # of xmited Excessive deferral pkt*/
126 	u32	scl;		/* RO # of xmited single collision pkt */
127 	u32	mcl;		/* RO # of xmited multiple collision pkt*/
128 	u32	lcl;		/* RO # of xmited late collision pkt */
129 	u32	ecl;		/* RO # of xmited excessive collision pkt*/
130 	u32	frg;		/* RO # of xmited fragments pkt*/
131 	u32	ncl;		/* RO # of xmited total collision count */
132 	u32	jbr;		/* RO # of xmited jabber count*/
133 	u32	bytes;		/* RO # of xmited byte count */
134 	u32	pok;		/* RO # of xmited good pkt */
135 	u32	uc;		/* RO (0x0x4f0)# of xmited unitcast pkt */
136 };
137 
138 struct bcmgenet_mib_counters {
139 	struct bcmgenet_rx_counters rx;
140 	struct bcmgenet_tx_counters tx;
141 	u32	rx_runt_cnt;
142 	u32	rx_runt_fcs;
143 	u32	rx_runt_fcs_align;
144 	u32	rx_runt_bytes;
145 	u32	rbuf_ovflow_cnt;
146 	u32	rbuf_err_cnt;
147 	u32	mdf_err_cnt;
148 	u32	alloc_rx_buff_failed;
149 	u32	rx_dma_failed;
150 	u32	tx_dma_failed;
151 	u32	tx_realloc_tsb;
152 	u32	tx_realloc_tsb_failed;
153 };
154 
155 #define UMAC_MIB_START			0x400
156 
157 #define UMAC_MDIO_CMD			0x614
158 #define  MDIO_START_BUSY		(1 << 29)
159 #define  MDIO_READ_FAIL			(1 << 28)
160 #define  MDIO_RD			(2 << 26)
161 #define  MDIO_WR			(1 << 26)
162 #define  MDIO_PMD_SHIFT			21
163 #define  MDIO_PMD_MASK			0x1F
164 #define  MDIO_REG_SHIFT			16
165 #define  MDIO_REG_MASK			0x1F
166 
167 #define UMAC_RBUF_OVFL_CNT_V1		0x61C
168 #define RBUF_OVFL_CNT_V2		0x80
169 #define RBUF_OVFL_CNT_V3PLUS		0x94
170 
171 #define UMAC_MPD_CTRL			0x620
172 #define  MPD_EN				(1 << 0)
173 #define  MPD_PW_EN			(1 << 27)
174 #define  MPD_MSEQ_LEN_SHIFT		16
175 #define  MPD_MSEQ_LEN_MASK		0xFF
176 
177 #define UMAC_MPD_PW_MS			0x624
178 #define UMAC_MPD_PW_LS			0x628
179 #define UMAC_RBUF_ERR_CNT_V1		0x634
180 #define RBUF_ERR_CNT_V2			0x84
181 #define RBUF_ERR_CNT_V3PLUS		0x98
182 #define UMAC_MDF_ERR_CNT		0x638
183 #define UMAC_MDF_CTRL			0x650
184 #define UMAC_MDF_ADDR			0x654
185 #define UMAC_MIB_CTRL			0x580
186 #define  MIB_RESET_RX			(1 << 0)
187 #define  MIB_RESET_RUNT			(1 << 1)
188 #define  MIB_RESET_TX			(1 << 2)
189 
190 #define RBUF_CTRL			0x00
191 #define  RBUF_64B_EN			(1 << 0)
192 #define  RBUF_ALIGN_2B			(1 << 1)
193 #define  RBUF_BAD_DIS			(1 << 2)
194 
195 #define RBUF_STATUS			0x0C
196 #define  RBUF_STATUS_WOL		(1 << 0)
197 #define  RBUF_STATUS_MPD_INTR_ACTIVE	(1 << 1)
198 #define  RBUF_STATUS_ACPI_INTR_ACTIVE	(1 << 2)
199 
200 #define RBUF_CHK_CTRL			0x14
201 #define  RBUF_RXCHK_EN			(1 << 0)
202 #define  RBUF_SKIP_FCS			(1 << 4)
203 #define  RBUF_L3_PARSE_DIS		(1 << 5)
204 
205 #define RBUF_ENERGY_CTRL		0x9c
206 #define  RBUF_EEE_EN			(1 << 0)
207 #define  RBUF_PM_EN			(1 << 1)
208 
209 #define RBUF_TBUF_SIZE_CTRL		0xb4
210 
211 #define RBUF_HFB_CTRL_V1		0x38
212 #define  RBUF_HFB_FILTER_EN_SHIFT	16
213 #define  RBUF_HFB_FILTER_EN_MASK	0xffff0000
214 #define  RBUF_HFB_EN			(1 << 0)
215 #define  RBUF_HFB_256B			(1 << 1)
216 #define  RBUF_ACPI_EN			(1 << 2)
217 
218 #define RBUF_HFB_LEN_V1			0x3C
219 #define  RBUF_FLTR_LEN_MASK		0xFF
220 #define  RBUF_FLTR_LEN_SHIFT		8
221 
222 #define TBUF_CTRL			0x00
223 #define  TBUF_64B_EN			(1 << 0)
224 #define TBUF_BP_MC			0x0C
225 #define TBUF_ENERGY_CTRL		0x14
226 #define  TBUF_EEE_EN			(1 << 0)
227 #define  TBUF_PM_EN			(1 << 1)
228 
229 #define TBUF_CTRL_V1			0x80
230 #define TBUF_BP_MC_V1			0xA0
231 
232 #define HFB_CTRL			0x00
233 #define HFB_FLT_ENABLE_V3PLUS		0x04
234 #define HFB_FLT_LEN_V2			0x04
235 #define HFB_FLT_LEN_V3PLUS		0x1C
236 
237 /* uniMac intrl2 registers */
238 #define INTRL2_CPU_STAT			0x00
239 #define INTRL2_CPU_SET			0x04
240 #define INTRL2_CPU_CLEAR		0x08
241 #define INTRL2_CPU_MASK_STATUS		0x0C
242 #define INTRL2_CPU_MASK_SET		0x10
243 #define INTRL2_CPU_MASK_CLEAR		0x14
244 
245 /* INTRL2 instance 0 definitions */
246 #define UMAC_IRQ_SCB			(1 << 0)
247 #define UMAC_IRQ_EPHY			(1 << 1)
248 #define UMAC_IRQ_PHY_DET_R		(1 << 2)
249 #define UMAC_IRQ_PHY_DET_F		(1 << 3)
250 #define UMAC_IRQ_LINK_UP		(1 << 4)
251 #define UMAC_IRQ_LINK_DOWN		(1 << 5)
252 #define UMAC_IRQ_LINK_EVENT		(UMAC_IRQ_LINK_UP | UMAC_IRQ_LINK_DOWN)
253 #define UMAC_IRQ_UMAC			(1 << 6)
254 #define UMAC_IRQ_UMAC_TSV		(1 << 7)
255 #define UMAC_IRQ_TBUF_UNDERRUN		(1 << 8)
256 #define UMAC_IRQ_RBUF_OVERFLOW		(1 << 9)
257 #define UMAC_IRQ_HFB_SM			(1 << 10)
258 #define UMAC_IRQ_HFB_MM			(1 << 11)
259 #define UMAC_IRQ_MPD_R			(1 << 12)
260 #define UMAC_IRQ_WAKE_EVENT		(UMAC_IRQ_HFB_SM | UMAC_IRQ_HFB_MM | \
261 					 UMAC_IRQ_MPD_R)
262 #define UMAC_IRQ_RXDMA_MBDONE		(1 << 13)
263 #define UMAC_IRQ_RXDMA_PDONE		(1 << 14)
264 #define UMAC_IRQ_RXDMA_BDONE		(1 << 15)
265 #define UMAC_IRQ_RXDMA_DONE		UMAC_IRQ_RXDMA_MBDONE
266 #define UMAC_IRQ_TXDMA_MBDONE		(1 << 16)
267 #define UMAC_IRQ_TXDMA_PDONE		(1 << 17)
268 #define UMAC_IRQ_TXDMA_BDONE		(1 << 18)
269 #define UMAC_IRQ_TXDMA_DONE		UMAC_IRQ_TXDMA_MBDONE
270 
271 /* Only valid for GENETv3+ */
272 #define UMAC_IRQ_MDIO_DONE		(1 << 23)
273 #define UMAC_IRQ_MDIO_ERROR		(1 << 24)
274 
275 /* INTRL2 instance 1 definitions */
276 #define UMAC_IRQ1_TX_INTR_MASK		0xFFFF
277 #define UMAC_IRQ1_RX_INTR_MASK		0xFFFF
278 #define UMAC_IRQ1_RX_INTR_SHIFT		16
279 
280 /* Register block offsets */
281 #define GENET_SYS_OFF			0x0000
282 #define GENET_GR_BRIDGE_OFF		0x0040
283 #define GENET_EXT_OFF			0x0080
284 #define GENET_INTRL2_0_OFF		0x0200
285 #define GENET_INTRL2_1_OFF		0x0240
286 #define GENET_RBUF_OFF			0x0300
287 #define GENET_UMAC_OFF			0x0800
288 
289 /* SYS block offsets and register definitions */
290 #define SYS_REV_CTRL			0x00
291 #define SYS_PORT_CTRL			0x04
292 #define  PORT_MODE_INT_EPHY		0
293 #define  PORT_MODE_INT_GPHY		1
294 #define  PORT_MODE_EXT_EPHY		2
295 #define  PORT_MODE_EXT_GPHY		3
296 #define  PORT_MODE_EXT_RVMII_25		(4 | BIT(4))
297 #define  PORT_MODE_EXT_RVMII_50		4
298 #define  LED_ACT_SOURCE_MAC		(1 << 9)
299 
300 #define SYS_RBUF_FLUSH_CTRL		0x08
301 #define SYS_TBUF_FLUSH_CTRL		0x0C
302 #define RBUF_FLUSH_CTRL_V1		0x04
303 
304 /* Ext block register offsets and definitions */
305 #define EXT_EXT_PWR_MGMT		0x00
306 #define  EXT_PWR_DOWN_BIAS		(1 << 0)
307 #define  EXT_PWR_DOWN_DLL		(1 << 1)
308 #define  EXT_PWR_DOWN_PHY		(1 << 2)
309 #define  EXT_PWR_DN_EN_LD		(1 << 3)
310 #define  EXT_ENERGY_DET			(1 << 4)
311 #define  EXT_IDDQ_FROM_PHY		(1 << 5)
312 #define  EXT_IDDQ_GLBL_PWR		(1 << 7)
313 #define  EXT_PHY_RESET			(1 << 8)
314 #define  EXT_ENERGY_DET_MASK		(1 << 12)
315 #define  EXT_PWR_DOWN_PHY_TX		(1 << 16)
316 #define  EXT_PWR_DOWN_PHY_RX		(1 << 17)
317 #define  EXT_PWR_DOWN_PHY_SD		(1 << 18)
318 #define  EXT_PWR_DOWN_PHY_RD		(1 << 19)
319 #define  EXT_PWR_DOWN_PHY_EN		(1 << 20)
320 
321 #define EXT_RGMII_OOB_CTRL		0x0C
322 #define  RGMII_MODE_EN_V123		(1 << 0)
323 #define  RGMII_LINK			(1 << 4)
324 #define  OOB_DISABLE			(1 << 5)
325 #define  RGMII_MODE_EN			(1 << 6)
326 #define  ID_MODE_DIS			(1 << 16)
327 
328 #define EXT_GPHY_CTRL			0x1C
329 #define  EXT_CFG_IDDQ_BIAS		(1 << 0)
330 #define  EXT_CFG_PWR_DOWN		(1 << 1)
331 #define  EXT_CK25_DIS			(1 << 4)
332 #define  EXT_CFG_IDDQ_GLOBAL_PWR	(1 << 3)
333 #define  EXT_GPHY_RESET			(1 << 5)
334 
335 /* DMA rings size */
336 #define DMA_RING_SIZE			(0x40)
337 #define DMA_RINGS_SIZE			(DMA_RING_SIZE * (DESC_INDEX + 1))
338 
339 /* DMA registers common definitions */
340 #define DMA_RW_POINTER_MASK		0x1FF
341 #define DMA_P_INDEX_DISCARD_CNT_MASK	0xFFFF
342 #define DMA_P_INDEX_DISCARD_CNT_SHIFT	16
343 #define DMA_BUFFER_DONE_CNT_MASK	0xFFFF
344 #define DMA_BUFFER_DONE_CNT_SHIFT	16
345 #define DMA_P_INDEX_MASK		0xFFFF
346 #define DMA_C_INDEX_MASK		0xFFFF
347 
348 /* DMA ring size register */
349 #define DMA_RING_SIZE_MASK		0xFFFF
350 #define DMA_RING_SIZE_SHIFT		16
351 #define DMA_RING_BUFFER_SIZE_MASK	0xFFFF
352 
353 /* DMA interrupt threshold register */
354 #define DMA_INTR_THRESHOLD_MASK		0x01FF
355 
356 /* DMA XON/XOFF register */
357 #define DMA_XON_THREHOLD_MASK		0xFFFF
358 #define DMA_XOFF_THRESHOLD_MASK		0xFFFF
359 #define DMA_XOFF_THRESHOLD_SHIFT	16
360 
361 /* DMA flow period register */
362 #define DMA_FLOW_PERIOD_MASK		0xFFFF
363 #define DMA_MAX_PKT_SIZE_MASK		0xFFFF
364 #define DMA_MAX_PKT_SIZE_SHIFT		16
365 
366 
367 /* DMA control register */
368 #define DMA_EN				(1 << 0)
369 #define DMA_RING_BUF_EN_SHIFT		0x01
370 #define DMA_RING_BUF_EN_MASK		0xFFFF
371 #define DMA_TSB_SWAP_EN			(1 << 20)
372 
373 /* DMA status register */
374 #define DMA_DISABLED			(1 << 0)
375 #define DMA_DESC_RAM_INIT_BUSY		(1 << 1)
376 
377 /* DMA SCB burst size register */
378 #define DMA_SCB_BURST_SIZE_MASK		0x1F
379 
380 /* DMA activity vector register */
381 #define DMA_ACTIVITY_VECTOR_MASK	0x1FFFF
382 
383 /* DMA backpressure mask register */
384 #define DMA_BACKPRESSURE_MASK		0x1FFFF
385 #define DMA_PFC_ENABLE			(1 << 31)
386 
387 /* DMA backpressure status register */
388 #define DMA_BACKPRESSURE_STATUS_MASK	0x1FFFF
389 
390 /* DMA override register */
391 #define DMA_LITTLE_ENDIAN_MODE		(1 << 0)
392 #define DMA_REGISTER_MODE		(1 << 1)
393 
394 /* DMA timeout register */
395 #define DMA_TIMEOUT_MASK		0xFFFF
396 #define DMA_TIMEOUT_VAL			5000	/* micro seconds */
397 
398 /* TDMA rate limiting control register */
399 #define DMA_RATE_LIMIT_EN_MASK		0xFFFF
400 
401 /* TDMA arbitration control register */
402 #define DMA_ARBITER_MODE_MASK		0x03
403 #define DMA_RING_BUF_PRIORITY_MASK	0x1F
404 #define DMA_RING_BUF_PRIORITY_SHIFT	5
405 #define DMA_PRIO_REG_INDEX(q)		((q) / 6)
406 #define DMA_PRIO_REG_SHIFT(q)		(((q) % 6) * DMA_RING_BUF_PRIORITY_SHIFT)
407 #define DMA_RATE_ADJ_MASK		0xFF
408 
409 /* Tx/Rx Dma Descriptor common bits*/
410 #define DMA_BUFLENGTH_MASK		0x0fff
411 #define DMA_BUFLENGTH_SHIFT		16
412 #define DMA_OWN				0x8000
413 #define DMA_EOP				0x4000
414 #define DMA_SOP				0x2000
415 #define DMA_WRAP			0x1000
416 /* Tx specific Dma descriptor bits */
417 #define DMA_TX_UNDERRUN			0x0200
418 #define DMA_TX_APPEND_CRC		0x0040
419 #define DMA_TX_OW_CRC			0x0020
420 #define DMA_TX_DO_CSUM			0x0010
421 #define DMA_TX_QTAG_SHIFT		7
422 
423 /* Rx Specific Dma descriptor bits */
424 #define DMA_RX_CHK_V3PLUS		0x8000
425 #define DMA_RX_CHK_V12			0x1000
426 #define DMA_RX_BRDCAST			0x0040
427 #define DMA_RX_MULT			0x0020
428 #define DMA_RX_LG			0x0010
429 #define DMA_RX_NO			0x0008
430 #define DMA_RX_RXER			0x0004
431 #define DMA_RX_CRC_ERROR		0x0002
432 #define DMA_RX_OV			0x0001
433 #define DMA_RX_FI_MASK			0x001F
434 #define DMA_RX_FI_SHIFT			0x0007
435 #define DMA_DESC_ALLOC_MASK		0x00FF
436 
437 #define DMA_ARBITER_RR			0x00
438 #define DMA_ARBITER_WRR			0x01
439 #define DMA_ARBITER_SP			0x02
440 
441 struct enet_cb {
442 	struct sk_buff      *skb;
443 	void __iomem *bd_addr;
444 	DEFINE_DMA_UNMAP_ADDR(dma_addr);
445 	DEFINE_DMA_UNMAP_LEN(dma_len);
446 };
447 
448 /* power management mode */
449 enum bcmgenet_power_mode {
450 	GENET_POWER_CABLE_SENSE = 0,
451 	GENET_POWER_PASSIVE,
452 	GENET_POWER_WOL_MAGIC,
453 };
454 
455 struct bcmgenet_priv;
456 
457 /* We support both runtime GENET detection and compile-time
458  * to optimize code-paths for a given hardware
459  */
460 enum bcmgenet_version {
461 	GENET_V1 = 1,
462 	GENET_V2,
463 	GENET_V3,
464 	GENET_V4,
465 	GENET_V5
466 };
467 
468 #define GENET_IS_V1(p)	((p)->version == GENET_V1)
469 #define GENET_IS_V2(p)	((p)->version == GENET_V2)
470 #define GENET_IS_V3(p)	((p)->version == GENET_V3)
471 #define GENET_IS_V4(p)	((p)->version == GENET_V4)
472 #define GENET_IS_V5(p)	((p)->version == GENET_V5)
473 
474 /* Hardware flags */
475 #define GENET_HAS_40BITS	(1 << 0)
476 #define GENET_HAS_EXT		(1 << 1)
477 #define GENET_HAS_MDIO_INTR	(1 << 2)
478 #define GENET_HAS_MOCA_LINK_DET	(1 << 3)
479 
480 /* BCMGENET hardware parameters, keep this structure nicely aligned
481  * since it is going to be used in hot paths
482  */
483 struct bcmgenet_hw_params {
484 	u8		tx_queues;
485 	u8		tx_bds_per_q;
486 	u8		rx_queues;
487 	u8		rx_bds_per_q;
488 	u8		bp_in_en_shift;
489 	u32		bp_in_mask;
490 	u8		hfb_filter_cnt;
491 	u8		hfb_filter_size;
492 	u8		qtag_mask;
493 	u16		tbuf_offset;
494 	u32		hfb_offset;
495 	u32		hfb_reg_offset;
496 	u32		rdma_offset;
497 	u32		tdma_offset;
498 	u32		words_per_bd;
499 	u32		flags;
500 };
501 
502 struct bcmgenet_skb_cb {
503 	struct enet_cb *first_cb;	/* First control block of SKB */
504 	struct enet_cb *last_cb;	/* Last control block of SKB */
505 	unsigned int bytes_sent;	/* bytes on the wire (no TSB) */
506 };
507 
508 #define GENET_CB(skb)	((struct bcmgenet_skb_cb *)((skb)->cb))
509 
510 struct bcmgenet_tx_ring {
511 	spinlock_t	lock;		/* ring lock */
512 	struct napi_struct napi;	/* NAPI per tx queue */
513 	unsigned long	packets;
514 	unsigned long	bytes;
515 	unsigned int	index;		/* ring index */
516 	unsigned int	queue;		/* queue index */
517 	struct enet_cb	*cbs;		/* tx ring buffer control block*/
518 	unsigned int	size;		/* size of each tx ring */
519 	unsigned int    clean_ptr;      /* Tx ring clean pointer */
520 	unsigned int	c_index;	/* last consumer index of each ring*/
521 	unsigned int	free_bds;	/* # of free bds for each ring */
522 	unsigned int	write_ptr;	/* Tx ring write pointer SW copy */
523 	unsigned int	prod_index;	/* Tx ring producer index SW copy */
524 	unsigned int	cb_ptr;		/* Tx ring initial CB ptr */
525 	unsigned int	end_ptr;	/* Tx ring end CB ptr */
526 	void (*int_enable)(struct bcmgenet_tx_ring *);
527 	void (*int_disable)(struct bcmgenet_tx_ring *);
528 	struct bcmgenet_priv *priv;
529 };
530 
531 struct bcmgenet_net_dim {
532 	u16		use_dim;
533 	u16		event_ctr;
534 	unsigned long	packets;
535 	unsigned long	bytes;
536 	struct dim	dim;
537 };
538 
539 struct bcmgenet_rx_ring {
540 	struct napi_struct napi;	/* Rx NAPI struct */
541 	unsigned long	bytes;
542 	unsigned long	packets;
543 	unsigned long	errors;
544 	unsigned long	dropped;
545 	unsigned int	index;		/* Rx ring index */
546 	struct enet_cb	*cbs;		/* Rx ring buffer control block */
547 	unsigned int	size;		/* Rx ring size */
548 	unsigned int	c_index;	/* Rx last consumer index */
549 	unsigned int	read_ptr;	/* Rx ring read pointer */
550 	unsigned int	cb_ptr;		/* Rx ring initial CB ptr */
551 	unsigned int	end_ptr;	/* Rx ring end CB ptr */
552 	unsigned int	old_discards;
553 	struct bcmgenet_net_dim dim;
554 	u32		rx_max_coalesced_frames;
555 	u32		rx_coalesce_usecs;
556 	void (*int_enable)(struct bcmgenet_rx_ring *);
557 	void (*int_disable)(struct bcmgenet_rx_ring *);
558 	struct bcmgenet_priv *priv;
559 };
560 
561 enum bcmgenet_rxnfc_state {
562 	BCMGENET_RXNFC_STATE_UNUSED = 0,
563 	BCMGENET_RXNFC_STATE_DISABLED,
564 	BCMGENET_RXNFC_STATE_ENABLED
565 };
566 
567 struct bcmgenet_rxnfc_rule {
568 	struct	list_head list;
569 	struct ethtool_rx_flow_spec	fs;
570 	enum bcmgenet_rxnfc_state state;
571 };
572 
573 /* device context */
574 struct bcmgenet_priv {
575 	void __iomem *base;
576 	enum bcmgenet_version version;
577 	struct net_device *dev;
578 
579 	/* transmit variables */
580 	void __iomem *tx_bds;
581 	struct enet_cb *tx_cbs;
582 	unsigned int num_tx_bds;
583 
584 	struct bcmgenet_tx_ring tx_rings[DESC_INDEX + 1];
585 
586 	/* receive variables */
587 	void __iomem *rx_bds;
588 	struct enet_cb *rx_cbs;
589 	unsigned int num_rx_bds;
590 	unsigned int rx_buf_len;
591 	struct bcmgenet_rxnfc_rule rxnfc_rules[MAX_NUM_OF_FS_RULES];
592 	struct list_head rxnfc_list;
593 
594 	struct bcmgenet_rx_ring rx_rings[DESC_INDEX + 1];
595 
596 	/* other misc variables */
597 	struct bcmgenet_hw_params *hw_params;
598 	unsigned autoneg_pause:1;
599 	unsigned tx_pause:1;
600 	unsigned rx_pause:1;
601 
602 	/* MDIO bus variables */
603 	wait_queue_head_t wq;
604 	bool internal_phy;
605 	struct device_node *phy_dn;
606 	struct device_node *mdio_dn;
607 	struct mii_bus *mii_bus;
608 	u16 gphy_rev;
609 	struct clk *clk_eee;
610 	bool clk_eee_enabled;
611 
612 	/* PHY device variables */
613 	phy_interface_t phy_interface;
614 	int phy_addr;
615 	int ext_phy;
616 	bool ephy_16nm;
617 
618 	/* Interrupt variables */
619 	struct work_struct bcmgenet_irq_work;
620 	int irq0;
621 	int irq1;
622 	int wol_irq;
623 	bool wol_irq_disabled;
624 
625 	/* shared status */
626 	spinlock_t lock;
627 	unsigned int irq0_stat;
628 
629 	/* HW descriptors/checksum variables */
630 	bool crc_fwd_en;
631 
632 	u32 dma_max_burst_length;
633 
634 	u32 msg_enable;
635 
636 	struct clk *clk;
637 	struct platform_device *pdev;
638 	struct platform_device *mii_pdev;
639 
640 	/* WOL */
641 	struct clk *clk_wol;
642 	u32 wolopts;
643 	u8 sopass[SOPASS_MAX];
644 	bool wol_active;
645 
646 	struct bcmgenet_mib_counters mib;
647 
648 	struct ethtool_eee eee;
649 };
650 
651 #define GENET_IO_MACRO(name, offset)					\
652 static inline u32 bcmgenet_##name##_readl(struct bcmgenet_priv *priv,	\
653 					u32 off)			\
654 {									\
655 	/* MIPS chips strapped for BE will automagically configure the	\
656 	 * peripheral registers for CPU-native byte order.		\
657 	 */								\
658 	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) \
659 		return __raw_readl(priv->base + offset + off);		\
660 	else								\
661 		return readl_relaxed(priv->base + offset + off);	\
662 }									\
663 static inline void bcmgenet_##name##_writel(struct bcmgenet_priv *priv,	\
664 					u32 val, u32 off)		\
665 {									\
666 	if (IS_ENABLED(CONFIG_MIPS) && IS_ENABLED(CONFIG_CPU_BIG_ENDIAN)) \
667 		__raw_writel(val, priv->base + offset + off);		\
668 	else								\
669 		writel_relaxed(val, priv->base + offset + off);		\
670 }
671 
672 GENET_IO_MACRO(ext, GENET_EXT_OFF);
673 GENET_IO_MACRO(umac, GENET_UMAC_OFF);
674 GENET_IO_MACRO(sys, GENET_SYS_OFF);
675 
676 /* interrupt l2 registers accessors */
677 GENET_IO_MACRO(intrl2_0, GENET_INTRL2_0_OFF);
678 GENET_IO_MACRO(intrl2_1, GENET_INTRL2_1_OFF);
679 
680 /* HFB register accessors  */
681 GENET_IO_MACRO(hfb, priv->hw_params->hfb_offset);
682 
683 /* GENET v2+ HFB control and filter len helpers */
684 GENET_IO_MACRO(hfb_reg, priv->hw_params->hfb_reg_offset);
685 
686 /* RBUF register accessors */
687 GENET_IO_MACRO(rbuf, GENET_RBUF_OFF);
688 
689 /* MDIO routines */
690 int bcmgenet_mii_init(struct net_device *dev);
691 int bcmgenet_mii_config(struct net_device *dev, bool init);
692 int bcmgenet_mii_probe(struct net_device *dev);
693 void bcmgenet_mii_exit(struct net_device *dev);
694 void bcmgenet_phy_pause_set(struct net_device *dev, bool rx, bool tx);
695 void bcmgenet_phy_power_set(struct net_device *dev, bool enable);
696 void bcmgenet_mii_setup(struct net_device *dev);
697 
698 /* Wake-on-LAN routines */
699 void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol);
700 int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol);
701 int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv,
702 				enum bcmgenet_power_mode mode);
703 void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv,
704 			       enum bcmgenet_power_mode mode);
705 
706 #endif /* __BCMGENET_H__ */
707