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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 */
43struct 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 */
61struct 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.*/
497struct 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 */
511struct 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 */
535struct 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
558struct 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 */
578enum 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
644struct 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
653struct 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 */
662struct 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
670enum bcm_sysport_type {
671 SYSTEMPORT = 0,
672 SYSTEMPORT_LITE,
673};
674
675struct bcm_sysport_hw_params {
676 bool is_lite;
677 unsigned int num_rx_desc_words;
678};
679
680struct 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 */
689struct 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 */
709struct 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 */
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#include <linux/net_dim.h>
16
17/* Receive/transmit descriptor format */
18#define DESC_ADDR_HI_STATUS_LEN 0x00
19#define DESC_ADDR_HI_SHIFT 0
20#define DESC_ADDR_HI_MASK 0xff
21#define DESC_STATUS_SHIFT 8
22#define DESC_STATUS_MASK 0x3ff
23#define DESC_LEN_SHIFT 18
24#define DESC_LEN_MASK 0x7fff
25#define DESC_ADDR_LO 0x04
26
27/* HW supports 40-bit addressing hence the */
28#define DESC_SIZE (WORDS_PER_DESC * sizeof(u32))
29
30/* Default RX buffer allocation size */
31#define RX_BUF_LENGTH 2048
32
33/* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(4) + FCS(4) = 1526.
34 * 1536 is multiple of 256 bytes
35 */
36#define ENET_BRCM_TAG_LEN 4
37#define ENET_PAD 10
38#define UMAC_MAX_MTU_SIZE (ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
39 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)
40
41/* Transmit status block */
42struct bcm_tsb {
43 u32 pcp_dei_vid;
44#define PCP_DEI_MASK 0xf
45#define VID_SHIFT 4
46#define VID_MASK 0xfff
47 u32 l4_ptr_dest_map;
48#define L4_CSUM_PTR_MASK 0x1ff
49#define L4_PTR_SHIFT 9
50#define L4_PTR_MASK 0x1ff
51#define L4_UDP (1 << 18)
52#define L4_LENGTH_VALID (1 << 19)
53#define DEST_MAP_SHIFT 20
54#define DEST_MAP_MASK 0x1ff
55};
56
57/* Receive status block uses the same
58 * definitions as the DMA descriptor
59 */
60struct bcm_rsb {
61 u32 rx_status_len;
62 u32 brcm_egress_tag;
63};
64
65/* Common Receive/Transmit status bits */
66#define DESC_L4_CSUM (1 << 7)
67#define DESC_SOP (1 << 8)
68#define DESC_EOP (1 << 9)
69
70/* Receive Status bits */
71#define RX_STATUS_UCAST 0
72#define RX_STATUS_BCAST 0x04
73#define RX_STATUS_MCAST 0x08
74#define RX_STATUS_L2_MCAST 0x0c
75#define RX_STATUS_ERR (1 << 4)
76#define RX_STATUS_OVFLOW (1 << 5)
77#define RX_STATUS_PARSE_FAIL (1 << 6)
78
79/* Transmit Status bits */
80#define TX_STATUS_VLAN_NO_ACT 0x00
81#define TX_STATUS_VLAN_PCP_TSB 0x01
82#define TX_STATUS_VLAN_QUEUE 0x02
83#define TX_STATUS_VLAN_VID_TSB 0x03
84#define TX_STATUS_OWR_CRC (1 << 2)
85#define TX_STATUS_APP_CRC (1 << 3)
86#define TX_STATUS_BRCM_TAG_NO_ACT 0
87#define TX_STATUS_BRCM_TAG_ZERO 0x10
88#define TX_STATUS_BRCM_TAG_ONE_QUEUE 0x20
89#define TX_STATUS_BRCM_TAG_ONE_TSB 0x30
90#define TX_STATUS_SKIP_BYTES (1 << 6)
91
92/* Specific register definitions */
93#define SYS_PORT_TOPCTRL_OFFSET 0
94#define REV_CNTL 0x00
95#define REV_MASK 0xffff
96
97#define RX_FLUSH_CNTL 0x04
98#define RX_FLUSH (1 << 0)
99
100#define TX_FLUSH_CNTL 0x08
101#define TX_FLUSH (1 << 0)
102
103#define MISC_CNTL 0x0c
104#define SYS_CLK_SEL (1 << 0)
105#define TDMA_EOP_SEL (1 << 1)
106
107/* Level-2 Interrupt controller offsets and defines */
108#define SYS_PORT_INTRL2_0_OFFSET 0x200
109#define SYS_PORT_INTRL2_1_OFFSET 0x240
110#define INTRL2_CPU_STATUS 0x00
111#define INTRL2_CPU_SET 0x04
112#define INTRL2_CPU_CLEAR 0x08
113#define INTRL2_CPU_MASK_STATUS 0x0c
114#define INTRL2_CPU_MASK_SET 0x10
115#define INTRL2_CPU_MASK_CLEAR 0x14
116
117/* Level-2 instance 0 interrupt bits */
118#define INTRL2_0_GISB_ERR (1 << 0)
119#define INTRL2_0_RBUF_OVFLOW (1 << 1)
120#define INTRL2_0_TBUF_UNDFLOW (1 << 2)
121#define INTRL2_0_MPD (1 << 3)
122#define INTRL2_0_BRCM_MATCH_TAG (1 << 4)
123#define INTRL2_0_RDMA_MBDONE (1 << 5)
124#define INTRL2_0_OVER_MAX_THRESH (1 << 6)
125#define INTRL2_0_BELOW_HYST_THRESH (1 << 7)
126#define INTRL2_0_FREE_LIST_EMPTY (1 << 8)
127#define INTRL2_0_TX_RING_FULL (1 << 9)
128#define INTRL2_0_DESC_ALLOC_ERR (1 << 10)
129#define INTRL2_0_UNEXP_PKTSIZE_ACK (1 << 11)
130
131/* SYSTEMPORT Lite groups the TX queues interrupts on instance 0 */
132#define INTRL2_0_TDMA_MBDONE_SHIFT 12
133#define INTRL2_0_TDMA_MBDONE_MASK (0xffff << INTRL2_0_TDMA_MBDONE_SHIFT)
134
135/* RXCHK offset and defines */
136#define SYS_PORT_RXCHK_OFFSET 0x300
137
138#define RXCHK_CONTROL 0x00
139#define RXCHK_EN (1 << 0)
140#define RXCHK_SKIP_FCS (1 << 1)
141#define RXCHK_BAD_CSUM_DIS (1 << 2)
142#define RXCHK_BRCM_TAG_EN (1 << 3)
143#define RXCHK_BRCM_TAG_MATCH_SHIFT 4
144#define RXCHK_BRCM_TAG_MATCH_MASK 0xff
145#define RXCHK_PARSE_TNL (1 << 12)
146#define RXCHK_VIOL_EN (1 << 13)
147#define RXCHK_VIOL_DIS (1 << 14)
148#define RXCHK_INCOM_PKT (1 << 15)
149#define RXCHK_V6_DUPEXT_EN (1 << 16)
150#define RXCHK_V6_DUPEXT_DIS (1 << 17)
151#define RXCHK_ETHERTYPE_DIS (1 << 18)
152#define RXCHK_L2_HDR_DIS (1 << 19)
153#define RXCHK_L3_HDR_DIS (1 << 20)
154#define RXCHK_MAC_RX_ERR_DIS (1 << 21)
155#define RXCHK_PARSE_AUTH (1 << 22)
156
157#define RXCHK_BRCM_TAG0 0x04
158#define RXCHK_BRCM_TAG(i) ((i) * RXCHK_BRCM_TAG0)
159#define RXCHK_BRCM_TAG0_MASK 0x24
160#define RXCHK_BRCM_TAG_MASK(i) ((i) * RXCHK_BRCM_TAG0_MASK)
161#define RXCHK_BRCM_TAG_MATCH_STATUS 0x44
162#define RXCHK_ETHERTYPE 0x48
163#define RXCHK_BAD_CSUM_CNTR 0x4C
164#define RXCHK_OTHER_DISC_CNTR 0x50
165
166/* TXCHCK offsets and defines */
167#define SYS_PORT_TXCHK_OFFSET 0x380
168#define TXCHK_PKT_RDY_THRESH 0x00
169
170/* Receive buffer offset and defines */
171#define SYS_PORT_RBUF_OFFSET 0x400
172
173#define RBUF_CONTROL 0x00
174#define RBUF_RSB_EN (1 << 0)
175#define RBUF_4B_ALGN (1 << 1)
176#define RBUF_BRCM_TAG_STRIP (1 << 2)
177#define RBUF_BAD_PKT_DISC (1 << 3)
178#define RBUF_RESUME_THRESH_SHIFT 4
179#define RBUF_RESUME_THRESH_MASK 0xff
180#define RBUF_OK_TO_SEND_SHIFT 12
181#define RBUF_OK_TO_SEND_MASK 0xff
182#define RBUF_CRC_REPLACE (1 << 20)
183#define RBUF_OK_TO_SEND_MODE (1 << 21)
184/* SYSTEMPORT Lite uses two bits here */
185#define RBUF_RSB_SWAP0 (1 << 22)
186#define RBUF_RSB_SWAP1 (1 << 23)
187#define RBUF_ACPI_EN (1 << 23)
188
189#define RBUF_PKT_RDY_THRESH 0x04
190
191#define RBUF_STATUS 0x08
192#define RBUF_WOL_MODE (1 << 0)
193#define RBUF_MPD (1 << 1)
194#define RBUF_ACPI (1 << 2)
195
196#define RBUF_OVFL_DISC_CNTR 0x0c
197#define RBUF_ERR_PKT_CNTR 0x10
198
199/* Transmit buffer offset and defines */
200#define SYS_PORT_TBUF_OFFSET 0x600
201
202#define TBUF_CONTROL 0x00
203#define TBUF_BP_EN (1 << 0)
204#define TBUF_MAX_PKT_THRESH_SHIFT 1
205#define TBUF_MAX_PKT_THRESH_MASK 0x1f
206#define TBUF_FULL_THRESH_SHIFT 8
207#define TBUF_FULL_THRESH_MASK 0x1f
208
209/* UniMAC offset and defines */
210#define SYS_PORT_UMAC_OFFSET 0x800
211
212#define UMAC_CMD 0x008
213#define CMD_TX_EN (1 << 0)
214#define CMD_RX_EN (1 << 1)
215#define CMD_SPEED_SHIFT 2
216#define CMD_SPEED_10 0
217#define CMD_SPEED_100 1
218#define CMD_SPEED_1000 2
219#define CMD_SPEED_2500 3
220#define CMD_SPEED_MASK 3
221#define CMD_PROMISC (1 << 4)
222#define CMD_PAD_EN (1 << 5)
223#define CMD_CRC_FWD (1 << 6)
224#define CMD_PAUSE_FWD (1 << 7)
225#define CMD_RX_PAUSE_IGNORE (1 << 8)
226#define CMD_TX_ADDR_INS (1 << 9)
227#define CMD_HD_EN (1 << 10)
228#define CMD_SW_RESET (1 << 13)
229#define CMD_LCL_LOOP_EN (1 << 15)
230#define CMD_AUTO_CONFIG (1 << 22)
231#define CMD_CNTL_FRM_EN (1 << 23)
232#define CMD_NO_LEN_CHK (1 << 24)
233#define CMD_RMT_LOOP_EN (1 << 25)
234#define CMD_PRBL_EN (1 << 27)
235#define CMD_TX_PAUSE_IGNORE (1 << 28)
236#define CMD_TX_RX_EN (1 << 29)
237#define CMD_RUNT_FILTER_DIS (1 << 30)
238
239#define UMAC_MAC0 0x00c
240#define UMAC_MAC1 0x010
241#define UMAC_MAX_FRAME_LEN 0x014
242
243#define UMAC_TX_FLUSH 0x334
244
245#define UMAC_MIB_START 0x400
246
247/* There is a 0xC gap between the end of RX and beginning of TX stats and then
248 * between the end of TX stats and the beginning of the RX RUNT
249 */
250#define UMAC_MIB_STAT_OFFSET 0xc
251
252#define UMAC_MIB_CTRL 0x580
253#define MIB_RX_CNT_RST (1 << 0)
254#define MIB_RUNT_CNT_RST (1 << 1)
255#define MIB_TX_CNT_RST (1 << 2)
256
257/* These offsets are valid for SYSTEMPORT and SYSTEMPORT Lite */
258#define UMAC_MPD_CTRL 0x620
259#define MPD_EN (1 << 0)
260#define MSEQ_LEN_SHIFT 16
261#define MSEQ_LEN_MASK 0xff
262#define PSW_EN (1 << 27)
263
264#define UMAC_PSW_MS 0x624
265#define UMAC_PSW_LS 0x628
266#define UMAC_MDF_CTRL 0x650
267#define UMAC_MDF_ADDR 0x654
268
269/* Only valid on SYSTEMPORT Lite */
270#define SYS_PORT_GIB_OFFSET 0x1000
271
272#define GIB_CONTROL 0x00
273#define GIB_TX_EN (1 << 0)
274#define GIB_RX_EN (1 << 1)
275#define GIB_TX_FLUSH (1 << 2)
276#define GIB_RX_FLUSH (1 << 3)
277#define GIB_GTX_CLK_SEL_SHIFT 4
278#define GIB_GTX_CLK_EXT_CLK (0 << GIB_GTX_CLK_SEL_SHIFT)
279#define GIB_GTX_CLK_125MHZ (1 << GIB_GTX_CLK_SEL_SHIFT)
280#define GIB_GTX_CLK_250MHZ (2 << GIB_GTX_CLK_SEL_SHIFT)
281#define GIB_FCS_STRIP (1 << 6)
282#define GIB_LCL_LOOP_EN (1 << 7)
283#define GIB_LCL_LOOP_TXEN (1 << 8)
284#define GIB_RMT_LOOP_EN (1 << 9)
285#define GIB_RMT_LOOP_RXEN (1 << 10)
286#define GIB_RX_PAUSE_EN (1 << 11)
287#define GIB_PREAMBLE_LEN_SHIFT 12
288#define GIB_PREAMBLE_LEN_MASK 0xf
289#define GIB_IPG_LEN_SHIFT 16
290#define GIB_IPG_LEN_MASK 0x3f
291#define GIB_PAD_EXTENSION_SHIFT 22
292#define GIB_PAD_EXTENSION_MASK 0x3f
293
294#define GIB_MAC1 0x08
295#define GIB_MAC0 0x0c
296
297/* Receive DMA offset and defines */
298#define SYS_PORT_RDMA_OFFSET 0x2000
299
300#define RDMA_CONTROL 0x1000
301#define RDMA_EN (1 << 0)
302#define RDMA_RING_CFG (1 << 1)
303#define RDMA_DISC_EN (1 << 2)
304#define RDMA_BUF_DATA_OFFSET_SHIFT 4
305#define RDMA_BUF_DATA_OFFSET_MASK 0x3ff
306
307#define RDMA_STATUS 0x1004
308#define RDMA_DISABLED (1 << 0)
309#define RDMA_DESC_RAM_INIT_BUSY (1 << 1)
310#define RDMA_BP_STATUS (1 << 2)
311
312#define RDMA_SCB_BURST_SIZE 0x1008
313
314#define RDMA_RING_BUF_SIZE 0x100c
315#define RDMA_RING_SIZE_SHIFT 16
316
317#define RDMA_WRITE_PTR_HI 0x1010
318#define RDMA_WRITE_PTR_LO 0x1014
319#define RDMA_PROD_INDEX 0x1018
320#define RDMA_PROD_INDEX_MASK 0xffff
321
322#define RDMA_CONS_INDEX 0x101c
323#define RDMA_CONS_INDEX_MASK 0xffff
324
325#define RDMA_START_ADDR_HI 0x1020
326#define RDMA_START_ADDR_LO 0x1024
327#define RDMA_END_ADDR_HI 0x1028
328#define RDMA_END_ADDR_LO 0x102c
329
330#define RDMA_MBDONE_INTR 0x1030
331#define RDMA_INTR_THRESH_MASK 0x1ff
332#define RDMA_TIMEOUT_SHIFT 16
333#define RDMA_TIMEOUT_MASK 0xffff
334
335#define RDMA_XON_XOFF_THRESH 0x1034
336#define RDMA_XON_XOFF_THRESH_MASK 0xffff
337#define RDMA_XOFF_THRESH_SHIFT 16
338
339#define RDMA_READ_PTR_HI 0x1038
340#define RDMA_READ_PTR_LO 0x103c
341
342#define RDMA_OVERRIDE 0x1040
343#define RDMA_LE_MODE (1 << 0)
344#define RDMA_REG_MODE (1 << 1)
345
346#define RDMA_TEST 0x1044
347#define RDMA_TP_OUT_SEL (1 << 0)
348#define RDMA_MEM_SEL (1 << 1)
349
350#define RDMA_DEBUG 0x1048
351
352/* Transmit DMA offset and defines */
353#define TDMA_NUM_RINGS 32 /* rings = queues */
354#define TDMA_PORT_SIZE DESC_SIZE /* two 32-bits words */
355
356#define SYS_PORT_TDMA_OFFSET 0x4000
357#define TDMA_WRITE_PORT_OFFSET 0x0000
358#define TDMA_WRITE_PORT_HI(i) (TDMA_WRITE_PORT_OFFSET + \
359 (i) * TDMA_PORT_SIZE)
360#define TDMA_WRITE_PORT_LO(i) (TDMA_WRITE_PORT_OFFSET + \
361 sizeof(u32) + (i) * TDMA_PORT_SIZE)
362
363#define TDMA_READ_PORT_OFFSET (TDMA_WRITE_PORT_OFFSET + \
364 (TDMA_NUM_RINGS * TDMA_PORT_SIZE))
365#define TDMA_READ_PORT_HI(i) (TDMA_READ_PORT_OFFSET + \
366 (i) * TDMA_PORT_SIZE)
367#define TDMA_READ_PORT_LO(i) (TDMA_READ_PORT_OFFSET + \
368 sizeof(u32) + (i) * TDMA_PORT_SIZE)
369
370#define TDMA_READ_PORT_CMD_OFFSET (TDMA_READ_PORT_OFFSET + \
371 (TDMA_NUM_RINGS * TDMA_PORT_SIZE))
372#define TDMA_READ_PORT_CMD(i) (TDMA_READ_PORT_CMD_OFFSET + \
373 (i) * sizeof(u32))
374
375#define TDMA_DESC_RING_00_BASE (TDMA_READ_PORT_CMD_OFFSET + \
376 (TDMA_NUM_RINGS * sizeof(u32)))
377
378/* Register offsets and defines relatives to a specific ring number */
379#define RING_HEAD_TAIL_PTR 0x00
380#define RING_HEAD_MASK 0x7ff
381#define RING_TAIL_SHIFT 11
382#define RING_TAIL_MASK 0x7ff
383#define RING_FLUSH (1 << 24)
384#define RING_EN (1 << 25)
385
386#define RING_COUNT 0x04
387#define RING_COUNT_MASK 0x7ff
388#define RING_BUFF_DONE_SHIFT 11
389#define RING_BUFF_DONE_MASK 0x7ff
390
391#define RING_MAX_HYST 0x08
392#define RING_MAX_THRESH_MASK 0x7ff
393#define RING_HYST_THRESH_SHIFT 11
394#define RING_HYST_THRESH_MASK 0x7ff
395
396#define RING_INTR_CONTROL 0x0c
397#define RING_INTR_THRESH_MASK 0x7ff
398#define RING_EMPTY_INTR_EN (1 << 15)
399#define RING_TIMEOUT_SHIFT 16
400#define RING_TIMEOUT_MASK 0xffff
401
402#define RING_PROD_CONS_INDEX 0x10
403#define RING_PROD_INDEX_MASK 0xffff
404#define RING_CONS_INDEX_SHIFT 16
405#define RING_CONS_INDEX_MASK 0xffff
406
407#define RING_MAPPING 0x14
408#define RING_QID_MASK 0x7
409#define RING_PORT_ID_SHIFT 3
410#define RING_PORT_ID_MASK 0x7
411#define RING_IGNORE_STATUS (1 << 6)
412#define RING_FAILOVER_EN (1 << 7)
413#define RING_CREDIT_SHIFT 8
414#define RING_CREDIT_MASK 0xffff
415
416#define RING_PCP_DEI_VID 0x18
417#define RING_VID_MASK 0x7ff
418#define RING_DEI (1 << 12)
419#define RING_PCP_SHIFT 13
420#define RING_PCP_MASK 0x7
421#define RING_PKT_SIZE_ADJ_SHIFT 16
422#define RING_PKT_SIZE_ADJ_MASK 0xf
423
424#define TDMA_DESC_RING_SIZE 28
425
426/* Defininition for a given TX ring base address */
427#define TDMA_DESC_RING_BASE(i) (TDMA_DESC_RING_00_BASE + \
428 ((i) * TDMA_DESC_RING_SIZE))
429
430/* Ring indexed register addreses */
431#define TDMA_DESC_RING_HEAD_TAIL_PTR(i) (TDMA_DESC_RING_BASE(i) + \
432 RING_HEAD_TAIL_PTR)
433#define TDMA_DESC_RING_COUNT(i) (TDMA_DESC_RING_BASE(i) + \
434 RING_COUNT)
435#define TDMA_DESC_RING_MAX_HYST(i) (TDMA_DESC_RING_BASE(i) + \
436 RING_MAX_HYST)
437#define TDMA_DESC_RING_INTR_CONTROL(i) (TDMA_DESC_RING_BASE(i) + \
438 RING_INTR_CONTROL)
439#define TDMA_DESC_RING_PROD_CONS_INDEX(i) \
440 (TDMA_DESC_RING_BASE(i) + \
441 RING_PROD_CONS_INDEX)
442#define TDMA_DESC_RING_MAPPING(i) (TDMA_DESC_RING_BASE(i) + \
443 RING_MAPPING)
444#define TDMA_DESC_RING_PCP_DEI_VID(i) (TDMA_DESC_RING_BASE(i) + \
445 RING_PCP_DEI_VID)
446
447#define TDMA_CONTROL 0x600
448#define TDMA_EN 0
449#define TSB_EN 1
450/* Uses 2 bits on SYSTEMPORT Lite and shifts everything by 1 bit, we
451 * keep the SYSTEMPORT layout here and adjust with tdma_control_bit()
452 */
453#define TSB_SWAP0 2
454#define TSB_SWAP1 3
455#define ACB_ALGO 3
456#define BUF_DATA_OFFSET_SHIFT 4
457#define BUF_DATA_OFFSET_MASK 0x3ff
458#define VLAN_EN 14
459#define SW_BRCM_TAG 15
460#define WNC_KPT_SIZE_UPDATE 16
461#define SYNC_PKT_SIZE 17
462#define ACH_TXDONE_DELAY_SHIFT 18
463#define ACH_TXDONE_DELAY_MASK 0xff
464
465#define TDMA_STATUS 0x604
466#define TDMA_DISABLED (1 << 0)
467#define TDMA_LL_RAM_INIT_BUSY (1 << 1)
468
469#define TDMA_SCB_BURST_SIZE 0x608
470#define TDMA_OVER_MAX_THRESH_STATUS 0x60c
471#define TDMA_OVER_HYST_THRESH_STATUS 0x610
472#define TDMA_TPID 0x614
473
474#define TDMA_FREE_LIST_HEAD_TAIL_PTR 0x618
475#define TDMA_FREE_HEAD_MASK 0x7ff
476#define TDMA_FREE_TAIL_SHIFT 11
477#define TDMA_FREE_TAIL_MASK 0x7ff
478
479#define TDMA_FREE_LIST_COUNT 0x61c
480#define TDMA_FREE_LIST_COUNT_MASK 0x7ff
481
482#define TDMA_TIER2_ARB_CTRL 0x620
483#define TDMA_ARB_MODE_RR 0
484#define TDMA_ARB_MODE_WEIGHT_RR 0x1
485#define TDMA_ARB_MODE_STRICT 0x2
486#define TDMA_ARB_MODE_DEFICIT_RR 0x3
487#define TDMA_CREDIT_SHIFT 4
488#define TDMA_CREDIT_MASK 0xffff
489
490#define TDMA_TIER1_ARB_0_CTRL 0x624
491#define TDMA_ARB_EN (1 << 0)
492
493#define TDMA_TIER1_ARB_0_QUEUE_EN 0x628
494#define TDMA_TIER1_ARB_1_CTRL 0x62c
495#define TDMA_TIER1_ARB_1_QUEUE_EN 0x630
496#define TDMA_TIER1_ARB_2_CTRL 0x634
497#define TDMA_TIER1_ARB_2_QUEUE_EN 0x638
498#define TDMA_TIER1_ARB_3_CTRL 0x63c
499#define TDMA_TIER1_ARB_3_QUEUE_EN 0x640
500
501#define TDMA_SCB_ENDIAN_OVERRIDE 0x644
502#define TDMA_LE_MODE (1 << 0)
503#define TDMA_REG_MODE (1 << 1)
504
505#define TDMA_TEST 0x648
506#define TDMA_TP_OUT_SEL (1 << 0)
507#define TDMA_MEM_TM (1 << 1)
508
509#define TDMA_DEBUG 0x64c
510
511/* Transmit/Receive descriptor */
512struct dma_desc {
513 u32 addr_status_len;
514 u32 addr_lo;
515};
516
517/* Number of Receive hardware descriptor words */
518#define SP_NUM_HW_RX_DESC_WORDS 1024
519#define SP_LT_NUM_HW_RX_DESC_WORDS 256
520
521/* Internal linked-list RAM size */
522#define SP_NUM_TX_DESC 1536
523#define SP_LT_NUM_TX_DESC 256
524
525#define WORDS_PER_DESC (sizeof(struct dma_desc) / sizeof(u32))
526
527/* Rx/Tx common counter group.*/
528struct bcm_sysport_pkt_counters {
529 u32 cnt_64; /* RO Received/Transmited 64 bytes packet */
530 u32 cnt_127; /* RO Rx/Tx 127 bytes packet */
531 u32 cnt_255; /* RO Rx/Tx 65-255 bytes packet */
532 u32 cnt_511; /* RO Rx/Tx 256-511 bytes packet */
533 u32 cnt_1023; /* RO Rx/Tx 512-1023 bytes packet */
534 u32 cnt_1518; /* RO Rx/Tx 1024-1518 bytes packet */
535 u32 cnt_mgv; /* RO Rx/Tx 1519-1522 good VLAN packet */
536 u32 cnt_2047; /* RO Rx/Tx 1522-2047 bytes packet*/
537 u32 cnt_4095; /* RO Rx/Tx 2048-4095 bytes packet*/
538 u32 cnt_9216; /* RO Rx/Tx 4096-9216 bytes packet*/
539};
540
541/* RSV, Receive Status Vector */
542struct bcm_sysport_rx_counters {
543 struct bcm_sysport_pkt_counters pkt_cnt;
544 u32 pkt; /* RO (0x428) Received pkt count*/
545 u32 bytes; /* RO Received byte count */
546 u32 mca; /* RO # of Received multicast pkt */
547 u32 bca; /* RO # of Receive broadcast pkt */
548 u32 fcs; /* RO # of Received FCS error */
549 u32 cf; /* RO # of Received control frame pkt*/
550 u32 pf; /* RO # of Received pause frame pkt */
551 u32 uo; /* RO # of unknown op code pkt */
552 u32 aln; /* RO # of alignment error count */
553 u32 flr; /* RO # of frame length out of range count */
554 u32 cde; /* RO # of code error pkt */
555 u32 fcr; /* RO # of carrier sense error pkt */
556 u32 ovr; /* RO # of oversize pkt*/
557 u32 jbr; /* RO # of jabber count */
558 u32 mtue; /* RO # of MTU error pkt*/
559 u32 pok; /* RO # of Received good pkt */
560 u32 uc; /* RO # of unicast pkt */
561 u32 ppp; /* RO # of PPP pkt */
562 u32 rcrc; /* RO (0x470),# of CRC match pkt */
563};
564
565/* TSV, Transmit Status Vector */
566struct bcm_sysport_tx_counters {
567 struct bcm_sysport_pkt_counters pkt_cnt;
568 u32 pkts; /* RO (0x4a8) Transmited pkt */
569 u32 mca; /* RO # of xmited multicast pkt */
570 u32 bca; /* RO # of xmited broadcast pkt */
571 u32 pf; /* RO # of xmited pause frame count */
572 u32 cf; /* RO # of xmited control frame count */
573 u32 fcs; /* RO # of xmited FCS error count */
574 u32 ovr; /* RO # of xmited oversize pkt */
575 u32 drf; /* RO # of xmited deferral pkt */
576 u32 edf; /* RO # of xmited Excessive deferral pkt*/
577 u32 scl; /* RO # of xmited single collision pkt */
578 u32 mcl; /* RO # of xmited multiple collision pkt*/
579 u32 lcl; /* RO # of xmited late collision pkt */
580 u32 ecl; /* RO # of xmited excessive collision pkt*/
581 u32 frg; /* RO # of xmited fragments pkt*/
582 u32 ncl; /* RO # of xmited total collision count */
583 u32 jbr; /* RO # of xmited jabber count*/
584 u32 bytes; /* RO # of xmited byte count */
585 u32 pok; /* RO # of xmited good pkt */
586 u32 uc; /* RO (0x4f0) # of xmited unicast pkt */
587};
588
589struct bcm_sysport_mib {
590 struct bcm_sysport_rx_counters rx;
591 struct bcm_sysport_tx_counters tx;
592 u32 rx_runt_cnt;
593 u32 rx_runt_fcs;
594 u32 rx_runt_fcs_align;
595 u32 rx_runt_bytes;
596 u32 rxchk_bad_csum;
597 u32 rxchk_other_pkt_disc;
598 u32 rbuf_ovflow_cnt;
599 u32 rbuf_err_cnt;
600 u32 alloc_rx_buff_failed;
601 u32 rx_dma_failed;
602 u32 tx_dma_failed;
603};
604
605/* HW maintains a large list of counters */
606enum bcm_sysport_stat_type {
607 BCM_SYSPORT_STAT_NETDEV = -1,
608 BCM_SYSPORT_STAT_NETDEV64,
609 BCM_SYSPORT_STAT_MIB_RX,
610 BCM_SYSPORT_STAT_MIB_TX,
611 BCM_SYSPORT_STAT_RUNT,
612 BCM_SYSPORT_STAT_RXCHK,
613 BCM_SYSPORT_STAT_RBUF,
614 BCM_SYSPORT_STAT_SOFT,
615};
616
617/* Macros to help define ethtool statistics */
618#define STAT_NETDEV(m) { \
619 .stat_string = __stringify(m), \
620 .stat_sizeof = sizeof(((struct net_device_stats *)0)->m), \
621 .stat_offset = offsetof(struct net_device_stats, m), \
622 .type = BCM_SYSPORT_STAT_NETDEV, \
623}
624
625#define STAT_NETDEV64(m) { \
626 .stat_string = __stringify(m), \
627 .stat_sizeof = sizeof(((struct bcm_sysport_stats64 *)0)->m), \
628 .stat_offset = offsetof(struct bcm_sysport_stats64, m), \
629 .type = BCM_SYSPORT_STAT_NETDEV64, \
630}
631
632#define STAT_MIB(str, m, _type) { \
633 .stat_string = str, \
634 .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
635 .stat_offset = offsetof(struct bcm_sysport_priv, m), \
636 .type = _type, \
637}
638
639#define STAT_MIB_RX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_RX)
640#define STAT_MIB_TX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_TX)
641#define STAT_RUNT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_RUNT)
642#define STAT_MIB_SOFT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_SOFT)
643
644#define STAT_RXCHK(str, m, ofs) { \
645 .stat_string = str, \
646 .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
647 .stat_offset = offsetof(struct bcm_sysport_priv, m), \
648 .type = BCM_SYSPORT_STAT_RXCHK, \
649 .reg_offset = ofs, \
650}
651
652#define STAT_RBUF(str, m, ofs) { \
653 .stat_string = str, \
654 .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
655 .stat_offset = offsetof(struct bcm_sysport_priv, m), \
656 .type = BCM_SYSPORT_STAT_RBUF, \
657 .reg_offset = ofs, \
658}
659
660/* TX bytes and packets */
661#define NUM_SYSPORT_TXQ_STAT 2
662
663struct bcm_sysport_stats {
664 char stat_string[ETH_GSTRING_LEN];
665 int stat_sizeof;
666 int stat_offset;
667 enum bcm_sysport_stat_type type;
668 /* reg offset from UMAC base for misc counters */
669 u16 reg_offset;
670};
671
672struct bcm_sysport_stats64 {
673 /* 64bit stats on 32bit/64bit Machine */
674 u64 rx_packets;
675 u64 rx_bytes;
676 u64 tx_packets;
677 u64 tx_bytes;
678};
679
680/* Software house keeping helper structure */
681struct bcm_sysport_cb {
682 struct sk_buff *skb; /* SKB for RX packets */
683 void __iomem *bd_addr; /* Buffer descriptor PHYS addr */
684
685 DEFINE_DMA_UNMAP_ADDR(dma_addr);
686 DEFINE_DMA_UNMAP_LEN(dma_len);
687};
688
689enum bcm_sysport_type {
690 SYSTEMPORT = 0,
691 SYSTEMPORT_LITE,
692};
693
694struct bcm_sysport_hw_params {
695 bool is_lite;
696 unsigned int num_rx_desc_words;
697};
698
699struct bcm_sysport_net_dim {
700 u16 use_dim;
701 u16 event_ctr;
702 unsigned long packets;
703 unsigned long bytes;
704 struct net_dim dim;
705};
706
707/* Software view of the TX ring */
708struct bcm_sysport_tx_ring {
709 spinlock_t lock; /* Ring lock for tx reclaim/xmit */
710 struct napi_struct napi; /* NAPI per tx queue */
711 dma_addr_t desc_dma; /* DMA cookie */
712 unsigned int index; /* Ring index */
713 unsigned int size; /* Ring current size */
714 unsigned int alloc_size; /* Ring one-time allocated size */
715 unsigned int desc_count; /* Number of descriptors */
716 unsigned int curr_desc; /* Current descriptor */
717 unsigned int c_index; /* Last consumer index */
718 unsigned int clean_index; /* Current clean index */
719 struct bcm_sysport_cb *cbs; /* Transmit control blocks */
720 struct dma_desc *desc_cpu; /* CPU view of the descriptor */
721 struct bcm_sysport_priv *priv; /* private context backpointer */
722 unsigned long packets; /* packets statistics */
723 unsigned long bytes; /* bytes statistics */
724 unsigned int switch_queue; /* switch port queue number */
725 unsigned int switch_port; /* switch port queue number */
726 bool inspect; /* inspect switch port and queue */
727};
728
729/* Driver private structure */
730struct bcm_sysport_priv {
731 void __iomem *base;
732 u32 irq0_stat;
733 u32 irq0_mask;
734 u32 irq1_stat;
735 u32 irq1_mask;
736 bool is_lite;
737 unsigned int num_rx_desc_words;
738 struct napi_struct napi ____cacheline_aligned;
739 struct net_device *netdev;
740 struct platform_device *pdev;
741 int irq0;
742 int irq1;
743 int wol_irq;
744
745 /* Transmit rings */
746 struct bcm_sysport_tx_ring *tx_rings;
747
748 /* Receive queue */
749 void __iomem *rx_bds;
750 struct bcm_sysport_cb *rx_cbs;
751 unsigned int num_rx_bds;
752 unsigned int rx_read_ptr;
753 unsigned int rx_c_index;
754
755 struct bcm_sysport_net_dim dim;
756 u32 rx_max_coalesced_frames;
757 u32 rx_coalesce_usecs;
758
759 /* PHY device */
760 struct device_node *phy_dn;
761 phy_interface_t phy_interface;
762 int old_pause;
763 int old_link;
764 int old_duplex;
765
766 /* Misc fields */
767 unsigned int rx_chk_en:1;
768 unsigned int tsb_en:1;
769 unsigned int crc_fwd:1;
770 u16 rev;
771 u32 wolopts;
772 unsigned int wol_irq_disabled:1;
773
774 /* MIB related fields */
775 struct bcm_sysport_mib mib;
776
777 /* Ethtool */
778 u32 msg_enable;
779
780 struct bcm_sysport_stats64 stats64;
781
782 /* For atomic update generic 64bit value on 32bit Machine */
783 struct u64_stats_sync syncp;
784
785 /* map information between switch port queues and local queues */
786 struct notifier_block dsa_notifier;
787 unsigned int per_port_num_tx_queues;
788 unsigned long queue_bitmap;
789 struct bcm_sysport_tx_ring *ring_map[DSA_MAX_PORTS * 8];
790
791};
792#endif /* __BCM_SYSPORT_H */