xref: /linux/drivers/net/ethernet/broadcom/bcmsysport.h (revision 7ae9fb1b7ecbb5d85d07857943f677fd1a559b18)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Broadcom BCM7xxx System Port Ethernet MAC driver
4  *
5  * Copyright (C) 2014 Broadcom Corporation
6  */
7 
8 #ifndef __BCM_SYSPORT_H
9 #define __BCM_SYSPORT_H
10 
11 #include <linux/bitmap.h>
12 #include <linux/ethtool.h>
13 #include <linux/if_vlan.h>
14 #include <linux/dim.h>
15 
16 #include "unimac.h"
17 
18 /* Receive/transmit descriptor format */
19 #define DESC_ADDR_HI_STATUS_LEN	0x00
20 #define  DESC_ADDR_HI_SHIFT	0
21 #define  DESC_ADDR_HI_MASK	0xff
22 #define  DESC_STATUS_SHIFT	8
23 #define  DESC_STATUS_MASK	0x3ff
24 #define  DESC_LEN_SHIFT		18
25 #define  DESC_LEN_MASK		0x7fff
26 #define DESC_ADDR_LO		0x04
27 
28 /* HW supports 40-bit addressing hence the */
29 #define DESC_SIZE		(WORDS_PER_DESC * sizeof(u32))
30 
31 /* Default RX buffer allocation size */
32 #define RX_BUF_LENGTH		2048
33 
34 /* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(4) + FCS(4) = 1526.
35  * 1536 is multiple of 256 bytes
36  */
37 #define ENET_BRCM_TAG_LEN	4
38 #define ENET_PAD		10
39 #define UMAC_MAX_MTU_SIZE	(ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
40 				 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)
41 
42 /* Transmit status block */
43 struct bcm_tsb {
44 	u32 pcp_dei_vid;
45 #define PCP_DEI_MASK		0xf
46 #define VID_SHIFT		4
47 #define VID_MASK		0xfff
48 	u32 l4_ptr_dest_map;
49 #define L4_CSUM_PTR_MASK	0x1ff
50 #define L4_PTR_SHIFT		9
51 #define L4_PTR_MASK		0x1ff
52 #define L4_UDP			(1 << 18)
53 #define L4_LENGTH_VALID		(1 << 19)
54 #define DEST_MAP_SHIFT		20
55 #define DEST_MAP_MASK		0x1ff
56 };
57 
58 /* Receive status block uses the same
59  * definitions as the DMA descriptor
60  */
61 struct bcm_rsb {
62 	u32 rx_status_len;
63 	u32 brcm_egress_tag;
64 };
65 
66 /* Common Receive/Transmit status bits */
67 #define DESC_L4_CSUM		(1 << 7)
68 #define DESC_SOP		(1 << 8)
69 #define DESC_EOP		(1 << 9)
70 
71 /* Receive Status bits */
72 #define RX_STATUS_UCAST			0
73 #define RX_STATUS_BCAST			0x04
74 #define RX_STATUS_MCAST			0x08
75 #define RX_STATUS_L2_MCAST		0x0c
76 #define RX_STATUS_ERR			(1 << 4)
77 #define RX_STATUS_OVFLOW		(1 << 5)
78 #define RX_STATUS_PARSE_FAIL		(1 << 6)
79 
80 /* Transmit Status bits */
81 #define TX_STATUS_VLAN_NO_ACT		0x00
82 #define TX_STATUS_VLAN_PCP_TSB		0x01
83 #define TX_STATUS_VLAN_QUEUE		0x02
84 #define TX_STATUS_VLAN_VID_TSB		0x03
85 #define TX_STATUS_OWR_CRC		(1 << 2)
86 #define TX_STATUS_APP_CRC		(1 << 3)
87 #define TX_STATUS_BRCM_TAG_NO_ACT	0
88 #define TX_STATUS_BRCM_TAG_ZERO		0x10
89 #define TX_STATUS_BRCM_TAG_ONE_QUEUE	0x20
90 #define TX_STATUS_BRCM_TAG_ONE_TSB	0x30
91 #define TX_STATUS_SKIP_BYTES		(1 << 6)
92 
93 /* Specific register definitions */
94 #define SYS_PORT_TOPCTRL_OFFSET		0
95 #define REV_CNTL			0x00
96 #define  REV_MASK			0xffff
97 
98 #define RX_FLUSH_CNTL			0x04
99 #define  RX_FLUSH			(1 << 0)
100 
101 #define TX_FLUSH_CNTL			0x08
102 #define  TX_FLUSH			(1 << 0)
103 
104 #define MISC_CNTL			0x0c
105 #define  SYS_CLK_SEL			(1 << 0)
106 #define  TDMA_EOP_SEL			(1 << 1)
107 
108 /* Level-2 Interrupt controller offsets and defines */
109 #define SYS_PORT_INTRL2_0_OFFSET	0x200
110 #define SYS_PORT_INTRL2_1_OFFSET	0x240
111 #define INTRL2_CPU_STATUS		0x00
112 #define INTRL2_CPU_SET			0x04
113 #define INTRL2_CPU_CLEAR		0x08
114 #define INTRL2_CPU_MASK_STATUS		0x0c
115 #define INTRL2_CPU_MASK_SET		0x10
116 #define INTRL2_CPU_MASK_CLEAR		0x14
117 
118 /* Level-2 instance 0 interrupt bits */
119 #define INTRL2_0_GISB_ERR		(1 << 0)
120 #define INTRL2_0_RBUF_OVFLOW		(1 << 1)
121 #define INTRL2_0_TBUF_UNDFLOW		(1 << 2)
122 #define INTRL2_0_MPD			(1 << 3)
123 #define INTRL2_0_BRCM_MATCH_TAG		(1 << 4)
124 #define INTRL2_0_RDMA_MBDONE		(1 << 5)
125 #define INTRL2_0_OVER_MAX_THRESH	(1 << 6)
126 #define INTRL2_0_BELOW_HYST_THRESH	(1 << 7)
127 #define INTRL2_0_FREE_LIST_EMPTY	(1 << 8)
128 #define INTRL2_0_TX_RING_FULL		(1 << 9)
129 #define INTRL2_0_DESC_ALLOC_ERR		(1 << 10)
130 #define INTRL2_0_UNEXP_PKTSIZE_ACK	(1 << 11)
131 
132 /* SYSTEMPORT Lite groups the TX queues interrupts on instance 0 */
133 #define INTRL2_0_TDMA_MBDONE_SHIFT	12
134 #define INTRL2_0_TDMA_MBDONE_MASK	(0xffff << INTRL2_0_TDMA_MBDONE_SHIFT)
135 
136 /* RXCHK offset and defines */
137 #define SYS_PORT_RXCHK_OFFSET		0x300
138 
139 #define RXCHK_CONTROL			0x00
140 #define  RXCHK_EN			(1 << 0)
141 #define  RXCHK_SKIP_FCS			(1 << 1)
142 #define  RXCHK_BAD_CSUM_DIS		(1 << 2)
143 #define  RXCHK_BRCM_TAG_EN		(1 << 3)
144 #define  RXCHK_BRCM_TAG_MATCH_SHIFT	4
145 #define  RXCHK_BRCM_TAG_MATCH_MASK	0xff
146 #define  RXCHK_PARSE_TNL		(1 << 12)
147 #define  RXCHK_VIOL_EN			(1 << 13)
148 #define  RXCHK_VIOL_DIS			(1 << 14)
149 #define  RXCHK_INCOM_PKT		(1 << 15)
150 #define  RXCHK_V6_DUPEXT_EN		(1 << 16)
151 #define  RXCHK_V6_DUPEXT_DIS		(1 << 17)
152 #define  RXCHK_ETHERTYPE_DIS		(1 << 18)
153 #define  RXCHK_L2_HDR_DIS		(1 << 19)
154 #define  RXCHK_L3_HDR_DIS		(1 << 20)
155 #define  RXCHK_MAC_RX_ERR_DIS		(1 << 21)
156 #define  RXCHK_PARSE_AUTH		(1 << 22)
157 
158 #define RXCHK_BRCM_TAG0			0x04
159 #define RXCHK_BRCM_TAG(i)		((i) * 0x4 + RXCHK_BRCM_TAG0)
160 #define RXCHK_BRCM_TAG0_MASK		0x24
161 #define RXCHK_BRCM_TAG_MASK(i)		((i) * 0x4 + RXCHK_BRCM_TAG0_MASK)
162 #define RXCHK_BRCM_TAG_MATCH_STATUS	0x44
163 #define RXCHK_ETHERTYPE			0x48
164 #define RXCHK_BAD_CSUM_CNTR		0x4C
165 #define RXCHK_OTHER_DISC_CNTR		0x50
166 
167 #define RXCHK_BRCM_TAG_MAX		8
168 #define RXCHK_BRCM_TAG_CID_SHIFT	16
169 #define RXCHK_BRCM_TAG_CID_MASK		0xff
170 
171 /* TXCHCK offsets and defines */
172 #define SYS_PORT_TXCHK_OFFSET		0x380
173 #define TXCHK_PKT_RDY_THRESH		0x00
174 
175 /* Receive buffer offset and defines */
176 #define SYS_PORT_RBUF_OFFSET		0x400
177 
178 #define RBUF_CONTROL			0x00
179 #define  RBUF_RSB_EN			(1 << 0)
180 #define  RBUF_4B_ALGN			(1 << 1)
181 #define  RBUF_BRCM_TAG_STRIP		(1 << 2)
182 #define  RBUF_BAD_PKT_DISC		(1 << 3)
183 #define  RBUF_RESUME_THRESH_SHIFT	4
184 #define  RBUF_RESUME_THRESH_MASK	0xff
185 #define  RBUF_OK_TO_SEND_SHIFT		12
186 #define  RBUF_OK_TO_SEND_MASK		0xff
187 #define  RBUF_CRC_REPLACE		(1 << 20)
188 #define  RBUF_OK_TO_SEND_MODE		(1 << 21)
189 /* SYSTEMPORT Lite uses two bits here */
190 #define  RBUF_RSB_SWAP0			(1 << 22)
191 #define  RBUF_RSB_SWAP1			(1 << 23)
192 #define  RBUF_ACPI_EN			(1 << 23)
193 #define  RBUF_ACPI_EN_LITE		(1 << 24)
194 
195 #define RBUF_PKT_RDY_THRESH		0x04
196 
197 #define RBUF_STATUS			0x08
198 #define  RBUF_WOL_MODE			(1 << 0)
199 #define  RBUF_MPD			(1 << 1)
200 #define  RBUF_ACPI			(1 << 2)
201 
202 #define RBUF_OVFL_DISC_CNTR		0x0c
203 #define RBUF_ERR_PKT_CNTR		0x10
204 
205 /* Transmit buffer offset and defines */
206 #define SYS_PORT_TBUF_OFFSET		0x600
207 
208 #define TBUF_CONTROL			0x00
209 #define  TBUF_BP_EN			(1 << 0)
210 #define  TBUF_MAX_PKT_THRESH_SHIFT	1
211 #define  TBUF_MAX_PKT_THRESH_MASK	0x1f
212 #define  TBUF_FULL_THRESH_SHIFT		8
213 #define  TBUF_FULL_THRESH_MASK		0x1f
214 
215 /* UniMAC offset and defines */
216 #define SYS_PORT_UMAC_OFFSET		0x800
217 
218 #define UMAC_MIB_START			0x400
219 
220 /* There is a 0xC gap between the end of RX and beginning of TX stats and then
221  * between the end of TX stats and the beginning of the RX RUNT
222  */
223 #define UMAC_MIB_STAT_OFFSET		0xc
224 
225 #define UMAC_MIB_CTRL			0x580
226 #define  MIB_RX_CNT_RST			(1 << 0)
227 #define  MIB_RUNT_CNT_RST		(1 << 1)
228 #define  MIB_TX_CNT_RST			(1 << 2)
229 
230 /* These offsets are valid for SYSTEMPORT and SYSTEMPORT Lite */
231 #define UMAC_MPD_CTRL			0x620
232 #define  MPD_EN				(1 << 0)
233 #define  MSEQ_LEN_SHIFT			16
234 #define  MSEQ_LEN_MASK			0xff
235 #define  PSW_EN				(1 << 27)
236 
237 #define UMAC_PSW_MS			0x624
238 #define UMAC_PSW_LS			0x628
239 #define UMAC_MDF_CTRL			0x650
240 #define UMAC_MDF_ADDR			0x654
241 
242 /* Only valid on SYSTEMPORT Lite */
243 #define SYS_PORT_GIB_OFFSET		0x1000
244 
245 #define GIB_CONTROL			0x00
246 #define  GIB_TX_EN			(1 << 0)
247 #define  GIB_RX_EN			(1 << 1)
248 #define  GIB_TX_FLUSH			(1 << 2)
249 #define  GIB_RX_FLUSH			(1 << 3)
250 #define  GIB_GTX_CLK_SEL_SHIFT		4
251 #define  GIB_GTX_CLK_EXT_CLK		(0 << GIB_GTX_CLK_SEL_SHIFT)
252 #define  GIB_GTX_CLK_125MHZ		(1 << GIB_GTX_CLK_SEL_SHIFT)
253 #define  GIB_GTX_CLK_250MHZ		(2 << GIB_GTX_CLK_SEL_SHIFT)
254 #define  GIB_FCS_STRIP_SHIFT		6
255 #define  GIB_FCS_STRIP			(1 << GIB_FCS_STRIP_SHIFT)
256 #define  GIB_LCL_LOOP_EN		(1 << 7)
257 #define  GIB_LCL_LOOP_TXEN		(1 << 8)
258 #define  GIB_RMT_LOOP_EN		(1 << 9)
259 #define  GIB_RMT_LOOP_RXEN		(1 << 10)
260 #define  GIB_RX_PAUSE_EN		(1 << 11)
261 #define  GIB_PREAMBLE_LEN_SHIFT		12
262 #define  GIB_PREAMBLE_LEN_MASK		0xf
263 #define  GIB_IPG_LEN_SHIFT		16
264 #define  GIB_IPG_LEN_MASK		0x3f
265 #define  GIB_PAD_EXTENSION_SHIFT	22
266 #define  GIB_PAD_EXTENSION_MASK		0x3f
267 
268 #define GIB_MAC1			0x08
269 #define GIB_MAC0			0x0c
270 
271 /* Receive DMA offset and defines */
272 #define SYS_PORT_RDMA_OFFSET		0x2000
273 
274 #define RDMA_CONTROL			0x1000
275 #define  RDMA_EN			(1 << 0)
276 #define  RDMA_RING_CFG			(1 << 1)
277 #define  RDMA_DISC_EN			(1 << 2)
278 #define  RDMA_BUF_DATA_OFFSET_SHIFT	4
279 #define  RDMA_BUF_DATA_OFFSET_MASK	0x3ff
280 
281 #define RDMA_STATUS			0x1004
282 #define  RDMA_DISABLED			(1 << 0)
283 #define  RDMA_DESC_RAM_INIT_BUSY	(1 << 1)
284 #define  RDMA_BP_STATUS			(1 << 2)
285 
286 #define RDMA_SCB_BURST_SIZE		0x1008
287 
288 #define RDMA_RING_BUF_SIZE		0x100c
289 #define  RDMA_RING_SIZE_SHIFT		16
290 
291 #define RDMA_WRITE_PTR_HI		0x1010
292 #define RDMA_WRITE_PTR_LO		0x1014
293 #define RDMA_OVFL_DISC_CNTR		0x1018
294 #define RDMA_PROD_INDEX			0x1018
295 #define  RDMA_PROD_INDEX_MASK		0xffff
296 
297 #define RDMA_CONS_INDEX			0x101c
298 #define  RDMA_CONS_INDEX_MASK		0xffff
299 
300 #define RDMA_START_ADDR_HI		0x1020
301 #define RDMA_START_ADDR_LO		0x1024
302 #define RDMA_END_ADDR_HI		0x1028
303 #define RDMA_END_ADDR_LO		0x102c
304 
305 #define RDMA_MBDONE_INTR		0x1030
306 #define  RDMA_INTR_THRESH_MASK		0x1ff
307 #define  RDMA_TIMEOUT_SHIFT		16
308 #define  RDMA_TIMEOUT_MASK		0xffff
309 
310 #define RDMA_XON_XOFF_THRESH		0x1034
311 #define  RDMA_XON_XOFF_THRESH_MASK	0xffff
312 #define  RDMA_XOFF_THRESH_SHIFT		16
313 
314 #define RDMA_READ_PTR_HI		0x1038
315 #define RDMA_READ_PTR_LO		0x103c
316 
317 #define RDMA_OVERRIDE			0x1040
318 #define  RDMA_LE_MODE			(1 << 0)
319 #define  RDMA_REG_MODE			(1 << 1)
320 
321 #define RDMA_TEST			0x1044
322 #define  RDMA_TP_OUT_SEL		(1 << 0)
323 #define  RDMA_MEM_SEL			(1 << 1)
324 
325 #define RDMA_DEBUG			0x1048
326 
327 /* Transmit DMA offset and defines */
328 #define TDMA_NUM_RINGS			32	/* rings = queues */
329 #define TDMA_PORT_SIZE			DESC_SIZE /* two 32-bits words */
330 
331 #define SYS_PORT_TDMA_OFFSET		0x4000
332 #define TDMA_WRITE_PORT_OFFSET		0x0000
333 #define TDMA_WRITE_PORT_HI(i)		(TDMA_WRITE_PORT_OFFSET + \
334 					(i) * TDMA_PORT_SIZE)
335 #define TDMA_WRITE_PORT_LO(i)		(TDMA_WRITE_PORT_OFFSET + \
336 					sizeof(u32) + (i) * TDMA_PORT_SIZE)
337 
338 #define TDMA_READ_PORT_OFFSET		(TDMA_WRITE_PORT_OFFSET + \
339 					(TDMA_NUM_RINGS * TDMA_PORT_SIZE))
340 #define TDMA_READ_PORT_HI(i)		(TDMA_READ_PORT_OFFSET + \
341 					(i) * TDMA_PORT_SIZE)
342 #define TDMA_READ_PORT_LO(i)		(TDMA_READ_PORT_OFFSET + \
343 					sizeof(u32) + (i) * TDMA_PORT_SIZE)
344 
345 #define TDMA_READ_PORT_CMD_OFFSET	(TDMA_READ_PORT_OFFSET + \
346 					(TDMA_NUM_RINGS * TDMA_PORT_SIZE))
347 #define TDMA_READ_PORT_CMD(i)		(TDMA_READ_PORT_CMD_OFFSET + \
348 					(i) * sizeof(u32))
349 
350 #define TDMA_DESC_RING_00_BASE		(TDMA_READ_PORT_CMD_OFFSET + \
351 					(TDMA_NUM_RINGS * sizeof(u32)))
352 
353 /* Register offsets and defines relatives to a specific ring number */
354 #define RING_HEAD_TAIL_PTR		0x00
355 #define  RING_HEAD_MASK			0x7ff
356 #define  RING_TAIL_SHIFT		11
357 #define  RING_TAIL_MASK			0x7ff
358 #define  RING_FLUSH			(1 << 24)
359 #define  RING_EN			(1 << 25)
360 
361 #define RING_COUNT			0x04
362 #define  RING_COUNT_MASK		0x7ff
363 #define  RING_BUFF_DONE_SHIFT		11
364 #define  RING_BUFF_DONE_MASK		0x7ff
365 
366 #define RING_MAX_HYST			0x08
367 #define  RING_MAX_THRESH_MASK		0x7ff
368 #define  RING_HYST_THRESH_SHIFT		11
369 #define  RING_HYST_THRESH_MASK		0x7ff
370 
371 #define RING_INTR_CONTROL		0x0c
372 #define  RING_INTR_THRESH_MASK		0x7ff
373 #define  RING_EMPTY_INTR_EN		(1 << 15)
374 #define  RING_TIMEOUT_SHIFT		16
375 #define  RING_TIMEOUT_MASK		0xffff
376 
377 #define RING_PROD_CONS_INDEX		0x10
378 #define  RING_PROD_INDEX_MASK		0xffff
379 #define  RING_CONS_INDEX_SHIFT		16
380 #define  RING_CONS_INDEX_MASK		0xffff
381 
382 #define RING_MAPPING			0x14
383 #define  RING_QID_MASK			0x7
384 #define  RING_PORT_ID_SHIFT		3
385 #define  RING_PORT_ID_MASK		0x7
386 #define  RING_IGNORE_STATUS		(1 << 6)
387 #define  RING_FAILOVER_EN		(1 << 7)
388 #define  RING_CREDIT_SHIFT		8
389 #define  RING_CREDIT_MASK		0xffff
390 
391 #define RING_PCP_DEI_VID		0x18
392 #define  RING_VID_MASK			0x7ff
393 #define  RING_DEI			(1 << 12)
394 #define  RING_PCP_SHIFT			13
395 #define  RING_PCP_MASK			0x7
396 #define  RING_PKT_SIZE_ADJ_SHIFT	16
397 #define  RING_PKT_SIZE_ADJ_MASK		0xf
398 
399 #define TDMA_DESC_RING_SIZE		28
400 
401 /* Defininition for a given TX ring base address */
402 #define TDMA_DESC_RING_BASE(i)		(TDMA_DESC_RING_00_BASE + \
403 					((i) * TDMA_DESC_RING_SIZE))
404 
405 /* Ring indexed register addreses */
406 #define TDMA_DESC_RING_HEAD_TAIL_PTR(i)	(TDMA_DESC_RING_BASE(i) + \
407 					RING_HEAD_TAIL_PTR)
408 #define TDMA_DESC_RING_COUNT(i)		(TDMA_DESC_RING_BASE(i) + \
409 					RING_COUNT)
410 #define TDMA_DESC_RING_MAX_HYST(i)	(TDMA_DESC_RING_BASE(i) + \
411 					RING_MAX_HYST)
412 #define TDMA_DESC_RING_INTR_CONTROL(i)	(TDMA_DESC_RING_BASE(i) + \
413 					RING_INTR_CONTROL)
414 #define TDMA_DESC_RING_PROD_CONS_INDEX(i) \
415 					(TDMA_DESC_RING_BASE(i) + \
416 					RING_PROD_CONS_INDEX)
417 #define TDMA_DESC_RING_MAPPING(i)	(TDMA_DESC_RING_BASE(i) + \
418 					RING_MAPPING)
419 #define TDMA_DESC_RING_PCP_DEI_VID(i)	(TDMA_DESC_RING_BASE(i) + \
420 					RING_PCP_DEI_VID)
421 
422 #define TDMA_CONTROL			0x600
423 #define  TDMA_EN			0
424 #define  TSB_EN				1
425 /* Uses 2 bits on SYSTEMPORT Lite and shifts everything by 1 bit, we
426  * keep the SYSTEMPORT layout here and adjust with tdma_control_bit()
427  */
428 #define  TSB_SWAP0			2
429 #define  TSB_SWAP1			3
430 #define  ACB_ALGO			3
431 #define  BUF_DATA_OFFSET_SHIFT		4
432 #define  BUF_DATA_OFFSET_MASK		0x3ff
433 #define  VLAN_EN			14
434 #define  SW_BRCM_TAG			15
435 #define  WNC_KPT_SIZE_UPDATE		16
436 #define  SYNC_PKT_SIZE			17
437 #define  ACH_TXDONE_DELAY_SHIFT		18
438 #define  ACH_TXDONE_DELAY_MASK		0xff
439 
440 #define TDMA_STATUS			0x604
441 #define  TDMA_DISABLED			(1 << 0)
442 #define  TDMA_LL_RAM_INIT_BUSY		(1 << 1)
443 
444 #define TDMA_SCB_BURST_SIZE		0x608
445 #define TDMA_OVER_MAX_THRESH_STATUS	0x60c
446 #define TDMA_OVER_HYST_THRESH_STATUS	0x610
447 #define TDMA_TPID			0x614
448 
449 #define TDMA_FREE_LIST_HEAD_TAIL_PTR	0x618
450 #define  TDMA_FREE_HEAD_MASK		0x7ff
451 #define  TDMA_FREE_TAIL_SHIFT		11
452 #define  TDMA_FREE_TAIL_MASK		0x7ff
453 
454 #define TDMA_FREE_LIST_COUNT		0x61c
455 #define  TDMA_FREE_LIST_COUNT_MASK	0x7ff
456 
457 #define TDMA_TIER2_ARB_CTRL		0x620
458 #define  TDMA_ARB_MODE_RR		0
459 #define  TDMA_ARB_MODE_WEIGHT_RR	0x1
460 #define  TDMA_ARB_MODE_STRICT		0x2
461 #define  TDMA_ARB_MODE_DEFICIT_RR	0x3
462 #define  TDMA_CREDIT_SHIFT		4
463 #define  TDMA_CREDIT_MASK		0xffff
464 
465 #define TDMA_TIER1_ARB_0_CTRL		0x624
466 #define  TDMA_ARB_EN			(1 << 0)
467 
468 #define TDMA_TIER1_ARB_0_QUEUE_EN	0x628
469 #define TDMA_TIER1_ARB_1_CTRL		0x62c
470 #define TDMA_TIER1_ARB_1_QUEUE_EN	0x630
471 #define TDMA_TIER1_ARB_2_CTRL		0x634
472 #define TDMA_TIER1_ARB_2_QUEUE_EN	0x638
473 #define TDMA_TIER1_ARB_3_CTRL		0x63c
474 #define TDMA_TIER1_ARB_3_QUEUE_EN	0x640
475 
476 #define TDMA_SCB_ENDIAN_OVERRIDE	0x644
477 #define  TDMA_LE_MODE			(1 << 0)
478 #define  TDMA_REG_MODE			(1 << 1)
479 
480 #define TDMA_TEST			0x648
481 #define  TDMA_TP_OUT_SEL		(1 << 0)
482 #define  TDMA_MEM_TM			(1 << 1)
483 
484 #define TDMA_DEBUG			0x64c
485 
486 /* Number of Receive hardware descriptor words */
487 #define SP_NUM_HW_RX_DESC_WORDS		1024
488 #define SP_LT_NUM_HW_RX_DESC_WORDS	512
489 
490 /* Internal linked-list RAM size */
491 #define SP_NUM_TX_DESC			1536
492 #define SP_LT_NUM_TX_DESC		256
493 
494 #define WORDS_PER_DESC			2
495 
496 /* Rx/Tx common counter group.*/
497 struct bcm_sysport_pkt_counters {
498 	u32	cnt_64;		/* RO Received/Transmited 64 bytes packet */
499 	u32	cnt_127;	/* RO Rx/Tx 127 bytes packet */
500 	u32	cnt_255;	/* RO Rx/Tx 65-255 bytes packet */
501 	u32	cnt_511;	/* RO Rx/Tx 256-511 bytes packet */
502 	u32	cnt_1023;	/* RO Rx/Tx 512-1023 bytes packet */
503 	u32	cnt_1518;	/* RO Rx/Tx 1024-1518 bytes packet */
504 	u32	cnt_mgv;	/* RO Rx/Tx 1519-1522 good VLAN packet */
505 	u32	cnt_2047;	/* RO Rx/Tx 1522-2047 bytes packet*/
506 	u32	cnt_4095;	/* RO Rx/Tx 2048-4095 bytes packet*/
507 	u32	cnt_9216;	/* RO Rx/Tx 4096-9216 bytes packet*/
508 };
509 
510 /* RSV, Receive Status Vector */
511 struct bcm_sysport_rx_counters {
512 	struct  bcm_sysport_pkt_counters pkt_cnt;
513 	u32	pkt;		/* RO (0x428) Received pkt count*/
514 	u32	bytes;		/* RO Received byte count */
515 	u32	mca;		/* RO # of Received multicast pkt */
516 	u32	bca;		/* RO # of Receive broadcast pkt */
517 	u32	fcs;		/* RO # of Received FCS error  */
518 	u32	cf;		/* RO # of Received control frame pkt*/
519 	u32	pf;		/* RO # of Received pause frame pkt */
520 	u32	uo;		/* RO # of unknown op code pkt */
521 	u32	aln;		/* RO # of alignment error count */
522 	u32	flr;		/* RO # of frame length out of range count */
523 	u32	cde;		/* RO # of code error pkt */
524 	u32	fcr;		/* RO # of carrier sense error pkt */
525 	u32	ovr;		/* RO # of oversize pkt*/
526 	u32	jbr;		/* RO # of jabber count */
527 	u32	mtue;		/* RO # of MTU error pkt*/
528 	u32	pok;		/* RO # of Received good pkt */
529 	u32	uc;		/* RO # of unicast pkt */
530 	u32	ppp;		/* RO # of PPP pkt */
531 	u32	rcrc;		/* RO (0x470),# of CRC match pkt */
532 };
533 
534 /* TSV, Transmit Status Vector */
535 struct bcm_sysport_tx_counters {
536 	struct bcm_sysport_pkt_counters pkt_cnt;
537 	u32	pkts;		/* RO (0x4a8) Transmited pkt */
538 	u32	mca;		/* RO # of xmited multicast pkt */
539 	u32	bca;		/* RO # of xmited broadcast pkt */
540 	u32	pf;		/* RO # of xmited pause frame count */
541 	u32	cf;		/* RO # of xmited control frame count */
542 	u32	fcs;		/* RO # of xmited FCS error count */
543 	u32	ovr;		/* RO # of xmited oversize pkt */
544 	u32	drf;		/* RO # of xmited deferral pkt */
545 	u32	edf;		/* RO # of xmited Excessive deferral pkt*/
546 	u32	scl;		/* RO # of xmited single collision pkt */
547 	u32	mcl;		/* RO # of xmited multiple collision pkt*/
548 	u32	lcl;		/* RO # of xmited late collision pkt */
549 	u32	ecl;		/* RO # of xmited excessive collision pkt*/
550 	u32	frg;		/* RO # of xmited fragments pkt*/
551 	u32	ncl;		/* RO # of xmited total collision count */
552 	u32	jbr;		/* RO # of xmited jabber count*/
553 	u32	bytes;		/* RO # of xmited byte count */
554 	u32	pok;		/* RO # of xmited good pkt */
555 	u32	uc;		/* RO (0x4f0) # of xmited unicast pkt */
556 };
557 
558 struct bcm_sysport_mib {
559 	struct bcm_sysport_rx_counters rx;
560 	struct bcm_sysport_tx_counters tx;
561 	u32 rx_runt_cnt;
562 	u32 rx_runt_fcs;
563 	u32 rx_runt_fcs_align;
564 	u32 rx_runt_bytes;
565 	u32 rxchk_bad_csum;
566 	u32 rxchk_other_pkt_disc;
567 	u32 rbuf_ovflow_cnt;
568 	u32 rbuf_err_cnt;
569 	u32 rdma_ovflow_cnt;
570 	u32 alloc_rx_buff_failed;
571 	u32 rx_dma_failed;
572 	u32 tx_dma_failed;
573 	u32 tx_realloc_tsb;
574 	u32 tx_realloc_tsb_failed;
575 };
576 
577 /* HW maintains a large list of counters */
578 enum bcm_sysport_stat_type {
579 	BCM_SYSPORT_STAT_NETDEV = -1,
580 	BCM_SYSPORT_STAT_NETDEV64,
581 	BCM_SYSPORT_STAT_MIB_RX,
582 	BCM_SYSPORT_STAT_MIB_TX,
583 	BCM_SYSPORT_STAT_RUNT,
584 	BCM_SYSPORT_STAT_RXCHK,
585 	BCM_SYSPORT_STAT_RBUF,
586 	BCM_SYSPORT_STAT_RDMA,
587 	BCM_SYSPORT_STAT_SOFT,
588 };
589 
590 /* Macros to help define ethtool statistics */
591 #define STAT_NETDEV(m) { \
592 	.stat_string = __stringify(m), \
593 	.stat_sizeof = sizeof(((struct net_device_stats *)0)->m), \
594 	.stat_offset = offsetof(struct net_device_stats, m), \
595 	.type = BCM_SYSPORT_STAT_NETDEV, \
596 }
597 
598 #define STAT_NETDEV64(m) { \
599 	.stat_string = __stringify(m), \
600 	.stat_sizeof = sizeof(((struct bcm_sysport_stats64 *)0)->m), \
601 	.stat_offset = offsetof(struct bcm_sysport_stats64, m), \
602 	.type = BCM_SYSPORT_STAT_NETDEV64, \
603 }
604 
605 #define STAT_MIB(str, m, _type) { \
606 	.stat_string = str, \
607 	.stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
608 	.stat_offset = offsetof(struct bcm_sysport_priv, m), \
609 	.type = _type, \
610 }
611 
612 #define STAT_MIB_RX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_RX)
613 #define STAT_MIB_TX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_TX)
614 #define STAT_RUNT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_RUNT)
615 #define STAT_MIB_SOFT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_SOFT)
616 
617 #define STAT_RXCHK(str, m, ofs) { \
618 	.stat_string = str, \
619 	.stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
620 	.stat_offset = offsetof(struct bcm_sysport_priv, m), \
621 	.type = BCM_SYSPORT_STAT_RXCHK, \
622 	.reg_offset = ofs, \
623 }
624 
625 #define STAT_RBUF(str, m, ofs) { \
626 	.stat_string = str, \
627 	.stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
628 	.stat_offset = offsetof(struct bcm_sysport_priv, m), \
629 	.type = BCM_SYSPORT_STAT_RBUF, \
630 	.reg_offset = ofs, \
631 }
632 
633 #define STAT_RDMA(str, m, ofs) { \
634 	.stat_string = str, \
635 	.stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
636 	.stat_offset = offsetof(struct bcm_sysport_priv, m), \
637 	.type = BCM_SYSPORT_STAT_RDMA, \
638 	.reg_offset = ofs, \
639 }
640 
641 /* TX bytes and packets */
642 #define NUM_SYSPORT_TXQ_STAT	2
643 
644 struct bcm_sysport_stats {
645 	char stat_string[ETH_GSTRING_LEN];
646 	int stat_sizeof;
647 	int stat_offset;
648 	enum bcm_sysport_stat_type type;
649 	/* reg offset from UMAC base for misc counters */
650 	u16 reg_offset;
651 };
652 
653 struct bcm_sysport_stats64 {
654 	/* 64bit stats on 32bit/64bit Machine */
655 	u64	rx_packets;
656 	u64	rx_bytes;
657 	u64	tx_packets;
658 	u64	tx_bytes;
659 };
660 
661 /* Software house keeping helper structure */
662 struct bcm_sysport_cb {
663 	struct sk_buff	*skb;		/* SKB for RX packets */
664 	void __iomem	*bd_addr;	/* Buffer descriptor PHYS addr */
665 
666 	DEFINE_DMA_UNMAP_ADDR(dma_addr);
667 	DEFINE_DMA_UNMAP_LEN(dma_len);
668 };
669 
670 enum bcm_sysport_type {
671 	SYSTEMPORT = 0,
672 	SYSTEMPORT_LITE,
673 };
674 
675 struct bcm_sysport_hw_params {
676 	bool		is_lite;
677 	unsigned int	num_rx_desc_words;
678 };
679 
680 struct bcm_sysport_net_dim {
681 	u16			use_dim;
682 	u16			event_ctr;
683 	unsigned long		packets;
684 	unsigned long		bytes;
685 	struct dim		dim;
686 };
687 
688 /* Software view of the TX ring */
689 struct bcm_sysport_tx_ring {
690 	spinlock_t	lock;		/* Ring lock for tx reclaim/xmit */
691 	struct napi_struct napi;	/* NAPI per tx queue */
692 	unsigned int	index;		/* Ring index */
693 	unsigned int	size;		/* Ring current size */
694 	unsigned int	alloc_size;	/* Ring one-time allocated size */
695 	unsigned int	desc_count;	/* Number of descriptors */
696 	unsigned int	curr_desc;	/* Current descriptor */
697 	unsigned int	c_index;	/* Last consumer index */
698 	unsigned int	clean_index;	/* Current clean index */
699 	struct bcm_sysport_cb *cbs;	/* Transmit control blocks */
700 	struct bcm_sysport_priv *priv;	/* private context backpointer */
701 	unsigned long	packets;	/* packets statistics */
702 	unsigned long	bytes;		/* bytes statistics */
703 	unsigned int	switch_queue;	/* switch port queue number */
704 	unsigned int	switch_port;	/* switch port queue number */
705 	bool		inspect;	/* inspect switch port and queue */
706 };
707 
708 /* Driver private structure */
709 struct bcm_sysport_priv {
710 	void __iomem		*base;
711 	u32			irq0_stat;
712 	u32			irq0_mask;
713 	u32			irq1_stat;
714 	u32			irq1_mask;
715 	bool			is_lite;
716 	unsigned int		num_rx_desc_words;
717 	struct napi_struct	napi ____cacheline_aligned;
718 	struct net_device	*netdev;
719 	struct platform_device	*pdev;
720 	int			irq0;
721 	int			irq1;
722 	int			wol_irq;
723 
724 	/* Transmit rings */
725 	spinlock_t		desc_lock;
726 	struct bcm_sysport_tx_ring *tx_rings;
727 
728 	/* Receive queue */
729 	void __iomem		*rx_bds;
730 	struct bcm_sysport_cb	*rx_cbs;
731 	unsigned int		num_rx_bds;
732 	unsigned int		rx_read_ptr;
733 	unsigned int		rx_c_index;
734 
735 	struct bcm_sysport_net_dim	dim;
736 	u32			rx_max_coalesced_frames;
737 	u32			rx_coalesce_usecs;
738 
739 	/* PHY device */
740 	struct device_node	*phy_dn;
741 	phy_interface_t		phy_interface;
742 	int			old_pause;
743 	int			old_link;
744 	int			old_duplex;
745 
746 	/* Misc fields */
747 	unsigned int		rx_chk_en:1;
748 	unsigned int		tsb_en:1;
749 	unsigned int		crc_fwd:1;
750 	u16			rev;
751 	u32			wolopts;
752 	u8			sopass[SOPASS_MAX];
753 	unsigned int		wol_irq_disabled:1;
754 	struct clk		*clk;
755 	struct clk		*wol_clk;
756 
757 	/* MIB related fields */
758 	struct bcm_sysport_mib	mib;
759 
760 	/* Ethtool */
761 	u32			msg_enable;
762 	DECLARE_BITMAP(filters, RXCHK_BRCM_TAG_MAX);
763 	u32			filters_loc[RXCHK_BRCM_TAG_MAX];
764 
765 	struct bcm_sysport_stats64	stats64;
766 
767 	/* For atomic update generic 64bit value on 32bit Machine */
768 	struct u64_stats_sync	syncp;
769 
770 	/* map information between switch port queues and local queues */
771 	struct notifier_block	netdev_notifier;
772 	unsigned int		per_port_num_tx_queues;
773 	struct bcm_sysport_tx_ring *ring_map[DSA_MAX_PORTS * 8];
774 
775 };
776 #endif /* __BCM_SYSPORT_H */
777