1 /*
2  * Broadcom BCM7xxx System Port Ethernet MAC driver
3  *
4  * Copyright (C) 2014 Broadcom Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 
11 #ifndef __BCM_SYSPORT_H
12 #define __BCM_SYSPORT_H
13 
14 #include <linux/if_vlan.h>
15 
16 /* Receive/transmit descriptor format */
17 #define DESC_ADDR_HI_STATUS_LEN	0x00
18 #define  DESC_ADDR_HI_SHIFT	0
19 #define  DESC_ADDR_HI_MASK	0xff
20 #define  DESC_STATUS_SHIFT	8
21 #define  DESC_STATUS_MASK	0x3ff
22 #define  DESC_LEN_SHIFT		18
23 #define  DESC_LEN_MASK		0x7fff
24 #define DESC_ADDR_LO		0x04
25 
26 /* HW supports 40-bit addressing hence the */
27 #define DESC_SIZE		(WORDS_PER_DESC * sizeof(u32))
28 
29 /* Default RX buffer allocation size */
30 #define RX_BUF_LENGTH		2048
31 
32 /* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(4) + FCS(4) = 1526.
33  * 1536 is multiple of 256 bytes
34  */
35 #define ENET_BRCM_TAG_LEN	4
36 #define ENET_PAD		10
37 #define UMAC_MAX_MTU_SIZE	(ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
38 				 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)
39 
40 /* Transmit status block */
41 struct bcm_tsb {
42 	u32 pcp_dei_vid;
43 #define PCP_DEI_MASK		0xf
44 #define VID_SHIFT		4
45 #define VID_MASK		0xfff
46 	u32 l4_ptr_dest_map;
47 #define L4_CSUM_PTR_MASK	0x1ff
48 #define L4_PTR_SHIFT		9
49 #define L4_PTR_MASK		0x1ff
50 #define L4_UDP			(1 << 18)
51 #define L4_LENGTH_VALID		(1 << 19)
52 #define DEST_MAP_SHIFT		20
53 #define DEST_MAP_MASK		0x1ff
54 };
55 
56 /* Receive status block uses the same
57  * definitions as the DMA descriptor
58  */
59 struct bcm_rsb {
60 	u32 rx_status_len;
61 	u32 brcm_egress_tag;
62 };
63 
64 /* Common Receive/Transmit status bits */
65 #define DESC_L4_CSUM		(1 << 7)
66 #define DESC_SOP		(1 << 8)
67 #define DESC_EOP		(1 << 9)
68 
69 /* Receive Status bits */
70 #define RX_STATUS_UCAST			0
71 #define RX_STATUS_BCAST			0x04
72 #define RX_STATUS_MCAST			0x08
73 #define RX_STATUS_L2_MCAST		0x0c
74 #define RX_STATUS_ERR			(1 << 4)
75 #define RX_STATUS_OVFLOW		(1 << 5)
76 #define RX_STATUS_PARSE_FAIL		(1 << 6)
77 
78 /* Transmit Status bits */
79 #define TX_STATUS_VLAN_NO_ACT		0x00
80 #define TX_STATUS_VLAN_PCP_TSB		0x01
81 #define TX_STATUS_VLAN_QUEUE		0x02
82 #define TX_STATUS_VLAN_VID_TSB		0x03
83 #define TX_STATUS_OWR_CRC		(1 << 2)
84 #define TX_STATUS_APP_CRC		(1 << 3)
85 #define TX_STATUS_BRCM_TAG_NO_ACT	0
86 #define TX_STATUS_BRCM_TAG_ZERO		0x10
87 #define TX_STATUS_BRCM_TAG_ONE_QUEUE	0x20
88 #define TX_STATUS_BRCM_TAG_ONE_TSB	0x30
89 #define TX_STATUS_SKIP_BYTES		(1 << 6)
90 
91 /* Specific register definitions */
92 #define SYS_PORT_TOPCTRL_OFFSET		0
93 #define REV_CNTL			0x00
94 #define  REV_MASK			0xffff
95 
96 #define RX_FLUSH_CNTL			0x04
97 #define  RX_FLUSH			(1 << 0)
98 
99 #define TX_FLUSH_CNTL			0x08
100 #define  TX_FLUSH			(1 << 0)
101 
102 #define MISC_CNTL			0x0c
103 #define  SYS_CLK_SEL			(1 << 0)
104 #define  TDMA_EOP_SEL			(1 << 1)
105 
106 /* Level-2 Interrupt controller offsets and defines */
107 #define SYS_PORT_INTRL2_0_OFFSET	0x200
108 #define SYS_PORT_INTRL2_1_OFFSET	0x240
109 #define INTRL2_CPU_STATUS		0x00
110 #define INTRL2_CPU_SET			0x04
111 #define INTRL2_CPU_CLEAR		0x08
112 #define INTRL2_CPU_MASK_STATUS		0x0c
113 #define INTRL2_CPU_MASK_SET		0x10
114 #define INTRL2_CPU_MASK_CLEAR		0x14
115 
116 /* Level-2 instance 0 interrupt bits */
117 #define INTRL2_0_GISB_ERR		(1 << 0)
118 #define INTRL2_0_RBUF_OVFLOW		(1 << 1)
119 #define INTRL2_0_TBUF_UNDFLOW		(1 << 2)
120 #define INTRL2_0_MPD			(1 << 3)
121 #define INTRL2_0_BRCM_MATCH_TAG		(1 << 4)
122 #define INTRL2_0_RDMA_MBDONE		(1 << 5)
123 #define INTRL2_0_OVER_MAX_THRESH	(1 << 6)
124 #define INTRL2_0_BELOW_HYST_THRESH	(1 << 7)
125 #define INTRL2_0_FREE_LIST_EMPTY	(1 << 8)
126 #define INTRL2_0_TX_RING_FULL		(1 << 9)
127 #define INTRL2_0_DESC_ALLOC_ERR		(1 << 10)
128 #define INTRL2_0_UNEXP_PKTSIZE_ACK	(1 << 11)
129 
130 /* RXCHK offset and defines */
131 #define SYS_PORT_RXCHK_OFFSET		0x300
132 
133 #define RXCHK_CONTROL			0x00
134 #define  RXCHK_EN			(1 << 0)
135 #define  RXCHK_SKIP_FCS			(1 << 1)
136 #define  RXCHK_BAD_CSUM_DIS		(1 << 2)
137 #define  RXCHK_BRCM_TAG_EN		(1 << 3)
138 #define  RXCHK_BRCM_TAG_MATCH_SHIFT	4
139 #define  RXCHK_BRCM_TAG_MATCH_MASK	0xff
140 #define  RXCHK_PARSE_TNL		(1 << 12)
141 #define  RXCHK_VIOL_EN			(1 << 13)
142 #define  RXCHK_VIOL_DIS			(1 << 14)
143 #define  RXCHK_INCOM_PKT		(1 << 15)
144 #define  RXCHK_V6_DUPEXT_EN		(1 << 16)
145 #define  RXCHK_V6_DUPEXT_DIS		(1 << 17)
146 #define  RXCHK_ETHERTYPE_DIS		(1 << 18)
147 #define  RXCHK_L2_HDR_DIS		(1 << 19)
148 #define  RXCHK_L3_HDR_DIS		(1 << 20)
149 #define  RXCHK_MAC_RX_ERR_DIS		(1 << 21)
150 #define  RXCHK_PARSE_AUTH		(1 << 22)
151 
152 #define RXCHK_BRCM_TAG0			0x04
153 #define RXCHK_BRCM_TAG(i)		((i) * RXCHK_BRCM_TAG0)
154 #define RXCHK_BRCM_TAG0_MASK		0x24
155 #define RXCHK_BRCM_TAG_MASK(i)		((i) * RXCHK_BRCM_TAG0_MASK)
156 #define RXCHK_BRCM_TAG_MATCH_STATUS	0x44
157 #define RXCHK_ETHERTYPE			0x48
158 #define RXCHK_BAD_CSUM_CNTR		0x4C
159 #define RXCHK_OTHER_DISC_CNTR		0x50
160 
161 /* TXCHCK offsets and defines */
162 #define SYS_PORT_TXCHK_OFFSET		0x380
163 #define TXCHK_PKT_RDY_THRESH		0x00
164 
165 /* Receive buffer offset and defines */
166 #define SYS_PORT_RBUF_OFFSET		0x400
167 
168 #define RBUF_CONTROL			0x00
169 #define  RBUF_RSB_EN			(1 << 0)
170 #define  RBUF_4B_ALGN			(1 << 1)
171 #define  RBUF_BRCM_TAG_STRIP		(1 << 2)
172 #define  RBUF_BAD_PKT_DISC		(1 << 3)
173 #define  RBUF_RESUME_THRESH_SHIFT	4
174 #define  RBUF_RESUME_THRESH_MASK	0xff
175 #define  RBUF_OK_TO_SEND_SHIFT		12
176 #define  RBUF_OK_TO_SEND_MASK		0xff
177 #define  RBUF_CRC_REPLACE		(1 << 20)
178 #define  RBUF_OK_TO_SEND_MODE		(1 << 21)
179 #define  RBUF_RSB_SWAP			(1 << 22)
180 #define  RBUF_ACPI_EN			(1 << 23)
181 
182 #define RBUF_PKT_RDY_THRESH		0x04
183 
184 #define RBUF_STATUS			0x08
185 #define  RBUF_WOL_MODE			(1 << 0)
186 #define  RBUF_MPD			(1 << 1)
187 #define  RBUF_ACPI			(1 << 2)
188 
189 #define RBUF_OVFL_DISC_CNTR		0x0c
190 #define RBUF_ERR_PKT_CNTR		0x10
191 
192 /* Transmit buffer offset and defines */
193 #define SYS_PORT_TBUF_OFFSET		0x600
194 
195 #define TBUF_CONTROL			0x00
196 #define  TBUF_BP_EN			(1 << 0)
197 #define  TBUF_MAX_PKT_THRESH_SHIFT	1
198 #define  TBUF_MAX_PKT_THRESH_MASK	0x1f
199 #define  TBUF_FULL_THRESH_SHIFT		8
200 #define  TBUF_FULL_THRESH_MASK		0x1f
201 
202 /* UniMAC offset and defines */
203 #define SYS_PORT_UMAC_OFFSET		0x800
204 
205 #define UMAC_CMD			0x008
206 #define  CMD_TX_EN			(1 << 0)
207 #define  CMD_RX_EN			(1 << 1)
208 #define  CMD_SPEED_SHIFT		2
209 #define  CMD_SPEED_10			0
210 #define  CMD_SPEED_100			1
211 #define  CMD_SPEED_1000			2
212 #define  CMD_SPEED_2500			3
213 #define  CMD_SPEED_MASK			3
214 #define  CMD_PROMISC			(1 << 4)
215 #define  CMD_PAD_EN			(1 << 5)
216 #define  CMD_CRC_FWD			(1 << 6)
217 #define  CMD_PAUSE_FWD			(1 << 7)
218 #define  CMD_RX_PAUSE_IGNORE		(1 << 8)
219 #define  CMD_TX_ADDR_INS		(1 << 9)
220 #define  CMD_HD_EN			(1 << 10)
221 #define  CMD_SW_RESET			(1 << 13)
222 #define  CMD_LCL_LOOP_EN		(1 << 15)
223 #define  CMD_AUTO_CONFIG		(1 << 22)
224 #define  CMD_CNTL_FRM_EN		(1 << 23)
225 #define  CMD_NO_LEN_CHK			(1 << 24)
226 #define  CMD_RMT_LOOP_EN		(1 << 25)
227 #define  CMD_PRBL_EN			(1 << 27)
228 #define  CMD_TX_PAUSE_IGNORE		(1 << 28)
229 #define  CMD_TX_RX_EN			(1 << 29)
230 #define  CMD_RUNT_FILTER_DIS		(1 << 30)
231 
232 #define UMAC_MAC0			0x00c
233 #define UMAC_MAC1			0x010
234 #define UMAC_MAX_FRAME_LEN		0x014
235 
236 #define UMAC_TX_FLUSH			0x334
237 
238 #define UMAC_MIB_START			0x400
239 
240 /* There is a 0xC gap between the end of RX and beginning of TX stats and then
241  * between the end of TX stats and the beginning of the RX RUNT
242  */
243 #define UMAC_MIB_STAT_OFFSET		0xc
244 
245 #define UMAC_MIB_CTRL			0x580
246 #define  MIB_RX_CNT_RST			(1 << 0)
247 #define  MIB_RUNT_CNT_RST		(1 << 1)
248 #define  MIB_TX_CNT_RST			(1 << 2)
249 #define UMAC_MDF_CTRL			0x650
250 #define UMAC_MDF_ADDR			0x654
251 
252 /* Receive DMA offset and defines */
253 #define SYS_PORT_RDMA_OFFSET		0x2000
254 
255 #define RDMA_CONTROL			0x1000
256 #define  RDMA_EN			(1 << 0)
257 #define  RDMA_RING_CFG			(1 << 1)
258 #define  RDMA_DISC_EN			(1 << 2)
259 #define  RDMA_BUF_DATA_OFFSET_SHIFT	4
260 #define  RDMA_BUF_DATA_OFFSET_MASK	0x3ff
261 
262 #define RDMA_STATUS			0x1004
263 #define  RDMA_DISABLED			(1 << 0)
264 #define  RDMA_DESC_RAM_INIT_BUSY	(1 << 1)
265 #define  RDMA_BP_STATUS			(1 << 2)
266 
267 #define RDMA_SCB_BURST_SIZE		0x1008
268 
269 #define RDMA_RING_BUF_SIZE		0x100c
270 #define  RDMA_RING_SIZE_SHIFT		16
271 
272 #define RDMA_WRITE_PTR_HI		0x1010
273 #define RDMA_WRITE_PTR_LO		0x1014
274 #define RDMA_PROD_INDEX			0x1018
275 #define  RDMA_PROD_INDEX_MASK		0xffff
276 
277 #define RDMA_CONS_INDEX			0x101c
278 #define  RDMA_CONS_INDEX_MASK		0xffff
279 
280 #define RDMA_START_ADDR_HI		0x1020
281 #define RDMA_START_ADDR_LO		0x1024
282 #define RDMA_END_ADDR_HI		0x1028
283 #define RDMA_END_ADDR_LO		0x102c
284 
285 #define RDMA_MBDONE_INTR		0x1030
286 #define  RDMA_INTR_THRESH_MASK		0xff
287 #define  RDMA_TIMEOUT_SHIFT		16
288 #define  RDMA_TIMEOUT_MASK		0xffff
289 
290 #define RDMA_XON_XOFF_THRESH		0x1034
291 #define  RDMA_XON_XOFF_THRESH_MASK	0xffff
292 #define  RDMA_XOFF_THRESH_SHIFT		16
293 
294 #define RDMA_READ_PTR_HI		0x1038
295 #define RDMA_READ_PTR_LO		0x103c
296 
297 #define RDMA_OVERRIDE			0x1040
298 #define  RDMA_LE_MODE			(1 << 0)
299 #define  RDMA_REG_MODE			(1 << 1)
300 
301 #define RDMA_TEST			0x1044
302 #define  RDMA_TP_OUT_SEL		(1 << 0)
303 #define  RDMA_MEM_SEL			(1 << 1)
304 
305 #define RDMA_DEBUG			0x1048
306 
307 /* Transmit DMA offset and defines */
308 #define TDMA_NUM_RINGS			32	/* rings = queues */
309 #define TDMA_PORT_SIZE			DESC_SIZE /* two 32-bits words */
310 
311 #define SYS_PORT_TDMA_OFFSET		0x4000
312 #define TDMA_WRITE_PORT_OFFSET		0x0000
313 #define TDMA_WRITE_PORT_HI(i)		(TDMA_WRITE_PORT_OFFSET + \
314 					(i) * TDMA_PORT_SIZE)
315 #define TDMA_WRITE_PORT_LO(i)		(TDMA_WRITE_PORT_OFFSET + \
316 					sizeof(u32) + (i) * TDMA_PORT_SIZE)
317 
318 #define TDMA_READ_PORT_OFFSET		(TDMA_WRITE_PORT_OFFSET + \
319 					(TDMA_NUM_RINGS * TDMA_PORT_SIZE))
320 #define TDMA_READ_PORT_HI(i)		(TDMA_READ_PORT_OFFSET + \
321 					(i) * TDMA_PORT_SIZE)
322 #define TDMA_READ_PORT_LO(i)		(TDMA_READ_PORT_OFFSET + \
323 					sizeof(u32) + (i) * TDMA_PORT_SIZE)
324 
325 #define TDMA_READ_PORT_CMD_OFFSET	(TDMA_READ_PORT_OFFSET + \
326 					(TDMA_NUM_RINGS * TDMA_PORT_SIZE))
327 #define TDMA_READ_PORT_CMD(i)		(TDMA_READ_PORT_CMD_OFFSET + \
328 					(i) * sizeof(u32))
329 
330 #define TDMA_DESC_RING_00_BASE		(TDMA_READ_PORT_CMD_OFFSET + \
331 					(TDMA_NUM_RINGS * sizeof(u32)))
332 
333 /* Register offsets and defines relatives to a specific ring number */
334 #define RING_HEAD_TAIL_PTR		0x00
335 #define  RING_HEAD_MASK			0x7ff
336 #define  RING_TAIL_SHIFT		11
337 #define  RING_TAIL_MASK			0x7ff
338 #define  RING_FLUSH			(1 << 24)
339 #define  RING_EN			(1 << 25)
340 
341 #define RING_COUNT			0x04
342 #define  RING_COUNT_MASK		0x7ff
343 #define  RING_BUFF_DONE_SHIFT		11
344 #define  RING_BUFF_DONE_MASK		0x7ff
345 
346 #define RING_MAX_HYST			0x08
347 #define  RING_MAX_THRESH_MASK		0x7ff
348 #define  RING_HYST_THRESH_SHIFT		11
349 #define  RING_HYST_THRESH_MASK		0x7ff
350 
351 #define RING_INTR_CONTROL		0x0c
352 #define  RING_INTR_THRESH_MASK		0x7ff
353 #define  RING_EMPTY_INTR_EN		(1 << 15)
354 #define  RING_TIMEOUT_SHIFT		16
355 #define  RING_TIMEOUT_MASK		0xffff
356 
357 #define RING_PROD_CONS_INDEX		0x10
358 #define  RING_PROD_INDEX_MASK		0xffff
359 #define  RING_CONS_INDEX_SHIFT		16
360 #define  RING_CONS_INDEX_MASK		0xffff
361 
362 #define RING_MAPPING			0x14
363 #define  RING_QID_MASK			0x3
364 #define  RING_PORT_ID_SHIFT		3
365 #define  RING_PORT_ID_MASK		0x7
366 #define  RING_IGNORE_STATUS		(1 << 6)
367 #define  RING_FAILOVER_EN		(1 << 7)
368 #define  RING_CREDIT_SHIFT		8
369 #define  RING_CREDIT_MASK		0xffff
370 
371 #define RING_PCP_DEI_VID		0x18
372 #define  RING_VID_MASK			0x7ff
373 #define  RING_DEI			(1 << 12)
374 #define  RING_PCP_SHIFT			13
375 #define  RING_PCP_MASK			0x7
376 #define  RING_PKT_SIZE_ADJ_SHIFT	16
377 #define  RING_PKT_SIZE_ADJ_MASK		0xf
378 
379 #define TDMA_DESC_RING_SIZE		28
380 
381 /* Defininition for a given TX ring base address */
382 #define TDMA_DESC_RING_BASE(i)		(TDMA_DESC_RING_00_BASE + \
383 					((i) * TDMA_DESC_RING_SIZE))
384 
385 /* Ring indexed register addreses */
386 #define TDMA_DESC_RING_HEAD_TAIL_PTR(i)	(TDMA_DESC_RING_BASE(i) + \
387 					RING_HEAD_TAIL_PTR)
388 #define TDMA_DESC_RING_COUNT(i)		(TDMA_DESC_RING_BASE(i) + \
389 					RING_COUNT)
390 #define TDMA_DESC_RING_MAX_HYST(i)	(TDMA_DESC_RING_BASE(i) + \
391 					RING_MAX_HYST)
392 #define TDMA_DESC_RING_INTR_CONTROL(i)	(TDMA_DESC_RING_BASE(i) + \
393 					RING_INTR_CONTROL)
394 #define TDMA_DESC_RING_PROD_CONS_INDEX(i) \
395 					(TDMA_DESC_RING_BASE(i) + \
396 					RING_PROD_CONS_INDEX)
397 #define TDMA_DESC_RING_MAPPING(i)	(TDMA_DESC_RING_BASE(i) + \
398 					RING_MAPPING)
399 #define TDMA_DESC_RING_PCP_DEI_VID(i)	(TDMA_DESC_RING_BASE(i) + \
400 					RING_PCP_DEI_VID)
401 
402 #define TDMA_CONTROL			0x600
403 #define  TDMA_EN			(1 << 0)
404 #define  TSB_EN				(1 << 1)
405 #define  TSB_SWAP			(1 << 2)
406 #define  ACB_ALGO			(1 << 3)
407 #define  BUF_DATA_OFFSET_SHIFT		4
408 #define  BUF_DATA_OFFSET_MASK		0x3ff
409 #define  VLAN_EN			(1 << 14)
410 #define  SW_BRCM_TAG			(1 << 15)
411 #define  WNC_KPT_SIZE_UPDATE		(1 << 16)
412 #define  SYNC_PKT_SIZE			(1 << 17)
413 #define  ACH_TXDONE_DELAY_SHIFT		18
414 #define  ACH_TXDONE_DELAY_MASK		0xff
415 
416 #define TDMA_STATUS			0x604
417 #define  TDMA_DISABLED			(1 << 0)
418 #define  TDMA_LL_RAM_INIT_BUSY		(1 << 1)
419 
420 #define TDMA_SCB_BURST_SIZE		0x608
421 #define TDMA_OVER_MAX_THRESH_STATUS	0x60c
422 #define TDMA_OVER_HYST_THRESH_STATUS	0x610
423 #define TDMA_TPID			0x614
424 
425 #define TDMA_FREE_LIST_HEAD_TAIL_PTR	0x618
426 #define  TDMA_FREE_HEAD_MASK		0x7ff
427 #define  TDMA_FREE_TAIL_SHIFT		11
428 #define  TDMA_FREE_TAIL_MASK		0x7ff
429 
430 #define TDMA_FREE_LIST_COUNT		0x61c
431 #define  TDMA_FREE_LIST_COUNT_MASK	0x7ff
432 
433 #define TDMA_TIER2_ARB_CTRL		0x620
434 #define  TDMA_ARB_MODE_RR		0
435 #define  TDMA_ARB_MODE_WEIGHT_RR	0x1
436 #define  TDMA_ARB_MODE_STRICT		0x2
437 #define  TDMA_ARB_MODE_DEFICIT_RR	0x3
438 #define  TDMA_CREDIT_SHIFT		4
439 #define  TDMA_CREDIT_MASK		0xffff
440 
441 #define TDMA_TIER1_ARB_0_CTRL		0x624
442 #define  TDMA_ARB_EN			(1 << 0)
443 
444 #define TDMA_TIER1_ARB_0_QUEUE_EN	0x628
445 #define TDMA_TIER1_ARB_1_CTRL		0x62c
446 #define TDMA_TIER1_ARB_1_QUEUE_EN	0x630
447 #define TDMA_TIER1_ARB_2_CTRL		0x634
448 #define TDMA_TIER1_ARB_2_QUEUE_EN	0x638
449 #define TDMA_TIER1_ARB_3_CTRL		0x63c
450 #define TDMA_TIER1_ARB_3_QUEUE_EN	0x640
451 
452 #define TDMA_SCB_ENDIAN_OVERRIDE	0x644
453 #define  TDMA_LE_MODE			(1 << 0)
454 #define  TDMA_REG_MODE			(1 << 1)
455 
456 #define TDMA_TEST			0x648
457 #define  TDMA_TP_OUT_SEL		(1 << 0)
458 #define  TDMA_MEM_TM			(1 << 1)
459 
460 #define TDMA_DEBUG			0x64c
461 
462 /* Transmit/Receive descriptor */
463 struct dma_desc {
464 	u32	addr_status_len;
465 	u32	addr_lo;
466 };
467 
468 /* Number of Receive hardware descriptor words */
469 #define NUM_HW_RX_DESC_WORDS		1024
470 /* Real number of usable descriptors */
471 #define NUM_RX_DESC			(NUM_HW_RX_DESC_WORDS / WORDS_PER_DESC)
472 
473 /* Internal linked-list RAM has up to 1536 entries */
474 #define NUM_TX_DESC			1536
475 
476 #define WORDS_PER_DESC			(sizeof(struct dma_desc) / sizeof(u32))
477 
478 /* Rx/Tx common counter group.*/
479 struct bcm_sysport_pkt_counters {
480 	u32	cnt_64;		/* RO Received/Transmited 64 bytes packet */
481 	u32	cnt_127;	/* RO Rx/Tx 127 bytes packet */
482 	u32	cnt_255;	/* RO Rx/Tx 65-255 bytes packet */
483 	u32	cnt_511;	/* RO Rx/Tx 256-511 bytes packet */
484 	u32	cnt_1023;	/* RO Rx/Tx 512-1023 bytes packet */
485 	u32	cnt_1518;	/* RO Rx/Tx 1024-1518 bytes packet */
486 	u32	cnt_mgv;	/* RO Rx/Tx 1519-1522 good VLAN packet */
487 	u32	cnt_2047;	/* RO Rx/Tx 1522-2047 bytes packet*/
488 	u32	cnt_4095;	/* RO Rx/Tx 2048-4095 bytes packet*/
489 	u32	cnt_9216;	/* RO Rx/Tx 4096-9216 bytes packet*/
490 };
491 
492 /* RSV, Receive Status Vector */
493 struct bcm_sysport_rx_counters {
494 	struct  bcm_sysport_pkt_counters pkt_cnt;
495 	u32	pkt;		/* RO (0x428) Received pkt count*/
496 	u32	bytes;		/* RO Received byte count */
497 	u32	mca;		/* RO # of Received multicast pkt */
498 	u32	bca;		/* RO # of Receive broadcast pkt */
499 	u32	fcs;		/* RO # of Received FCS error  */
500 	u32	cf;		/* RO # of Received control frame pkt*/
501 	u32	pf;		/* RO # of Received pause frame pkt */
502 	u32	uo;		/* RO # of unknown op code pkt */
503 	u32	aln;		/* RO # of alignment error count */
504 	u32	flr;		/* RO # of frame length out of range count */
505 	u32	cde;		/* RO # of code error pkt */
506 	u32	fcr;		/* RO # of carrier sense error pkt */
507 	u32	ovr;		/* RO # of oversize pkt*/
508 	u32	jbr;		/* RO # of jabber count */
509 	u32	mtue;		/* RO # of MTU error pkt*/
510 	u32	pok;		/* RO # of Received good pkt */
511 	u32	uc;		/* RO # of unicast pkt */
512 	u32	ppp;		/* RO # of PPP pkt */
513 	u32	rcrc;		/* RO (0x470),# of CRC match pkt */
514 };
515 
516 /* TSV, Transmit Status Vector */
517 struct bcm_sysport_tx_counters {
518 	struct bcm_sysport_pkt_counters pkt_cnt;
519 	u32	pkts;		/* RO (0x4a8) Transmited pkt */
520 	u32	mca;		/* RO # of xmited multicast pkt */
521 	u32	bca;		/* RO # of xmited broadcast pkt */
522 	u32	pf;		/* RO # of xmited pause frame count */
523 	u32	cf;		/* RO # of xmited control frame count */
524 	u32	fcs;		/* RO # of xmited FCS error count */
525 	u32	ovr;		/* RO # of xmited oversize pkt */
526 	u32	drf;		/* RO # of xmited deferral pkt */
527 	u32	edf;		/* RO # of xmited Excessive deferral pkt*/
528 	u32	scl;		/* RO # of xmited single collision pkt */
529 	u32	mcl;		/* RO # of xmited multiple collision pkt*/
530 	u32	lcl;		/* RO # of xmited late collision pkt */
531 	u32	ecl;		/* RO # of xmited excessive collision pkt*/
532 	u32	frg;		/* RO # of xmited fragments pkt*/
533 	u32	ncl;		/* RO # of xmited total collision count */
534 	u32	jbr;		/* RO # of xmited jabber count*/
535 	u32	bytes;		/* RO # of xmited byte count */
536 	u32	pok;		/* RO # of xmited good pkt */
537 	u32	uc;		/* RO (0x0x4f0)# of xmited unitcast pkt */
538 };
539 
540 struct bcm_sysport_mib {
541 	struct bcm_sysport_rx_counters rx;
542 	struct bcm_sysport_tx_counters tx;
543 	u32 rx_runt_cnt;
544 	u32 rx_runt_fcs;
545 	u32 rx_runt_fcs_align;
546 	u32 rx_runt_bytes;
547 	u32 rxchk_bad_csum;
548 	u32 rxchk_other_pkt_disc;
549 	u32 rbuf_ovflow_cnt;
550 	u32 rbuf_err_cnt;
551 };
552 
553 /* HW maintains a large list of counters */
554 enum bcm_sysport_stat_type {
555 	BCM_SYSPORT_STAT_NETDEV = -1,
556 	BCM_SYSPORT_STAT_MIB_RX,
557 	BCM_SYSPORT_STAT_MIB_TX,
558 	BCM_SYSPORT_STAT_RUNT,
559 	BCM_SYSPORT_STAT_RXCHK,
560 	BCM_SYSPORT_STAT_RBUF,
561 };
562 
563 /* Macros to help define ethtool statistics */
564 #define STAT_NETDEV(m) { \
565 	.stat_string = __stringify(m), \
566 	.stat_sizeof = sizeof(((struct net_device_stats *)0)->m), \
567 	.stat_offset = offsetof(struct net_device_stats, m), \
568 	.type = BCM_SYSPORT_STAT_NETDEV, \
569 }
570 
571 #define STAT_MIB(str, m, _type) { \
572 	.stat_string = str, \
573 	.stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
574 	.stat_offset = offsetof(struct bcm_sysport_priv, m), \
575 	.type = _type, \
576 }
577 
578 #define STAT_MIB_RX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_RX)
579 #define STAT_MIB_TX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_TX)
580 #define STAT_RUNT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_RUNT)
581 
582 #define STAT_RXCHK(str, m, ofs) { \
583 	.stat_string = str, \
584 	.stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
585 	.stat_offset = offsetof(struct bcm_sysport_priv, m), \
586 	.type = BCM_SYSPORT_STAT_RXCHK, \
587 	.reg_offset = ofs, \
588 }
589 
590 #define STAT_RBUF(str, m, ofs) { \
591 	.stat_string = str, \
592 	.stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
593 	.stat_offset = offsetof(struct bcm_sysport_priv, m), \
594 	.type = BCM_SYSPORT_STAT_RBUF, \
595 	.reg_offset = ofs, \
596 }
597 
598 struct bcm_sysport_stats {
599 	char stat_string[ETH_GSTRING_LEN];
600 	int stat_sizeof;
601 	int stat_offset;
602 	enum bcm_sysport_stat_type type;
603 	/* reg offset from UMAC base for misc counters */
604 	u16 reg_offset;
605 };
606 
607 /* Software house keeping helper structure */
608 struct bcm_sysport_cb {
609 	struct sk_buff	*skb;		/* SKB for RX packets */
610 	void __iomem	*bd_addr;	/* Buffer descriptor PHYS addr */
611 
612 	DEFINE_DMA_UNMAP_ADDR(dma_addr);
613 	DEFINE_DMA_UNMAP_LEN(dma_len);
614 };
615 
616 /* Software view of the TX ring */
617 struct bcm_sysport_tx_ring {
618 	spinlock_t	lock;		/* Ring lock for tx reclaim/xmit */
619 	struct napi_struct napi;	/* NAPI per tx queue */
620 	dma_addr_t	desc_dma;	/* DMA cookie */
621 	unsigned int	index;		/* Ring index */
622 	unsigned int	size;		/* Ring current size */
623 	unsigned int	alloc_size;	/* Ring one-time allocated size */
624 	unsigned int	desc_count;	/* Number of descriptors */
625 	unsigned int	curr_desc;	/* Current descriptor */
626 	unsigned int	c_index;	/* Last consumer index */
627 	unsigned int	p_index;	/* Current producer index */
628 	struct bcm_sysport_cb *cbs;	/* Transmit control blocks */
629 	struct dma_desc	*desc_cpu;	/* CPU view of the descriptor */
630 	struct bcm_sysport_priv *priv;	/* private context backpointer */
631 };
632 
633 /* Driver private structure */
634 struct bcm_sysport_priv {
635 	void __iomem		*base;
636 	u32			irq0_stat;
637 	u32			irq0_mask;
638 	u32			irq1_stat;
639 	u32			irq1_mask;
640 	struct napi_struct	napi ____cacheline_aligned;
641 	struct net_device	*netdev;
642 	struct platform_device	*pdev;
643 	int			irq0;
644 	int			irq1;
645 
646 	/* Transmit rings */
647 	struct bcm_sysport_tx_ring tx_rings[TDMA_NUM_RINGS];
648 
649 	/* Receive queue */
650 	void __iomem		*rx_bds;
651 	void __iomem		*rx_bd_assign_ptr;
652 	unsigned int		rx_bd_assign_index;
653 	struct bcm_sysport_cb	*rx_cbs;
654 	unsigned int		num_rx_bds;
655 	unsigned int		rx_read_ptr;
656 	unsigned int		rx_c_index;
657 
658 	/* PHY device */
659 	struct device_node	*phy_dn;
660 	struct phy_device	*phydev;
661 	phy_interface_t		phy_interface;
662 	int			old_pause;
663 	int			old_link;
664 	int			old_duplex;
665 
666 	/* Misc fields */
667 	unsigned int		rx_csum_en:1;
668 	unsigned int		tsb_en:1;
669 	unsigned int		crc_fwd:1;
670 	u16			rev;
671 
672 	/* MIB related fields */
673 	struct bcm_sysport_mib	mib;
674 
675 	/* Ethtool */
676 	u32			msg_enable;
677 };
678 #endif /* __BCM_SYSPORT_H */
679