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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
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 */
41struct 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 */
59struct 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
250#define UMAC_MPD_CTRL 0x620
251#define MPD_EN (1 << 0)
252#define MSEQ_LEN_SHIFT 16
253#define MSEQ_LEN_MASK 0xff
254#define PSW_EN (1 << 27)
255
256#define UMAC_PSW_MS 0x624
257#define UMAC_PSW_LS 0x628
258#define UMAC_MDF_CTRL 0x650
259#define UMAC_MDF_ADDR 0x654
260
261/* Receive DMA offset and defines */
262#define SYS_PORT_RDMA_OFFSET 0x2000
263
264#define RDMA_CONTROL 0x1000
265#define RDMA_EN (1 << 0)
266#define RDMA_RING_CFG (1 << 1)
267#define RDMA_DISC_EN (1 << 2)
268#define RDMA_BUF_DATA_OFFSET_SHIFT 4
269#define RDMA_BUF_DATA_OFFSET_MASK 0x3ff
270
271#define RDMA_STATUS 0x1004
272#define RDMA_DISABLED (1 << 0)
273#define RDMA_DESC_RAM_INIT_BUSY (1 << 1)
274#define RDMA_BP_STATUS (1 << 2)
275
276#define RDMA_SCB_BURST_SIZE 0x1008
277
278#define RDMA_RING_BUF_SIZE 0x100c
279#define RDMA_RING_SIZE_SHIFT 16
280
281#define RDMA_WRITE_PTR_HI 0x1010
282#define RDMA_WRITE_PTR_LO 0x1014
283#define RDMA_PROD_INDEX 0x1018
284#define RDMA_PROD_INDEX_MASK 0xffff
285
286#define RDMA_CONS_INDEX 0x101c
287#define RDMA_CONS_INDEX_MASK 0xffff
288
289#define RDMA_START_ADDR_HI 0x1020
290#define RDMA_START_ADDR_LO 0x1024
291#define RDMA_END_ADDR_HI 0x1028
292#define RDMA_END_ADDR_LO 0x102c
293
294#define RDMA_MBDONE_INTR 0x1030
295#define RDMA_INTR_THRESH_MASK 0x1ff
296#define RDMA_TIMEOUT_SHIFT 16
297#define RDMA_TIMEOUT_MASK 0xffff
298
299#define RDMA_XON_XOFF_THRESH 0x1034
300#define RDMA_XON_XOFF_THRESH_MASK 0xffff
301#define RDMA_XOFF_THRESH_SHIFT 16
302
303#define RDMA_READ_PTR_HI 0x1038
304#define RDMA_READ_PTR_LO 0x103c
305
306#define RDMA_OVERRIDE 0x1040
307#define RDMA_LE_MODE (1 << 0)
308#define RDMA_REG_MODE (1 << 1)
309
310#define RDMA_TEST 0x1044
311#define RDMA_TP_OUT_SEL (1 << 0)
312#define RDMA_MEM_SEL (1 << 1)
313
314#define RDMA_DEBUG 0x1048
315
316/* Transmit DMA offset and defines */
317#define TDMA_NUM_RINGS 32 /* rings = queues */
318#define TDMA_PORT_SIZE DESC_SIZE /* two 32-bits words */
319
320#define SYS_PORT_TDMA_OFFSET 0x4000
321#define TDMA_WRITE_PORT_OFFSET 0x0000
322#define TDMA_WRITE_PORT_HI(i) (TDMA_WRITE_PORT_OFFSET + \
323 (i) * TDMA_PORT_SIZE)
324#define TDMA_WRITE_PORT_LO(i) (TDMA_WRITE_PORT_OFFSET + \
325 sizeof(u32) + (i) * TDMA_PORT_SIZE)
326
327#define TDMA_READ_PORT_OFFSET (TDMA_WRITE_PORT_OFFSET + \
328 (TDMA_NUM_RINGS * TDMA_PORT_SIZE))
329#define TDMA_READ_PORT_HI(i) (TDMA_READ_PORT_OFFSET + \
330 (i) * TDMA_PORT_SIZE)
331#define TDMA_READ_PORT_LO(i) (TDMA_READ_PORT_OFFSET + \
332 sizeof(u32) + (i) * TDMA_PORT_SIZE)
333
334#define TDMA_READ_PORT_CMD_OFFSET (TDMA_READ_PORT_OFFSET + \
335 (TDMA_NUM_RINGS * TDMA_PORT_SIZE))
336#define TDMA_READ_PORT_CMD(i) (TDMA_READ_PORT_CMD_OFFSET + \
337 (i) * sizeof(u32))
338
339#define TDMA_DESC_RING_00_BASE (TDMA_READ_PORT_CMD_OFFSET + \
340 (TDMA_NUM_RINGS * sizeof(u32)))
341
342/* Register offsets and defines relatives to a specific ring number */
343#define RING_HEAD_TAIL_PTR 0x00
344#define RING_HEAD_MASK 0x7ff
345#define RING_TAIL_SHIFT 11
346#define RING_TAIL_MASK 0x7ff
347#define RING_FLUSH (1 << 24)
348#define RING_EN (1 << 25)
349
350#define RING_COUNT 0x04
351#define RING_COUNT_MASK 0x7ff
352#define RING_BUFF_DONE_SHIFT 11
353#define RING_BUFF_DONE_MASK 0x7ff
354
355#define RING_MAX_HYST 0x08
356#define RING_MAX_THRESH_MASK 0x7ff
357#define RING_HYST_THRESH_SHIFT 11
358#define RING_HYST_THRESH_MASK 0x7ff
359
360#define RING_INTR_CONTROL 0x0c
361#define RING_INTR_THRESH_MASK 0x7ff
362#define RING_EMPTY_INTR_EN (1 << 15)
363#define RING_TIMEOUT_SHIFT 16
364#define RING_TIMEOUT_MASK 0xffff
365
366#define RING_PROD_CONS_INDEX 0x10
367#define RING_PROD_INDEX_MASK 0xffff
368#define RING_CONS_INDEX_SHIFT 16
369#define RING_CONS_INDEX_MASK 0xffff
370
371#define RING_MAPPING 0x14
372#define RING_QID_MASK 0x3
373#define RING_PORT_ID_SHIFT 3
374#define RING_PORT_ID_MASK 0x7
375#define RING_IGNORE_STATUS (1 << 6)
376#define RING_FAILOVER_EN (1 << 7)
377#define RING_CREDIT_SHIFT 8
378#define RING_CREDIT_MASK 0xffff
379
380#define RING_PCP_DEI_VID 0x18
381#define RING_VID_MASK 0x7ff
382#define RING_DEI (1 << 12)
383#define RING_PCP_SHIFT 13
384#define RING_PCP_MASK 0x7
385#define RING_PKT_SIZE_ADJ_SHIFT 16
386#define RING_PKT_SIZE_ADJ_MASK 0xf
387
388#define TDMA_DESC_RING_SIZE 28
389
390/* Defininition for a given TX ring base address */
391#define TDMA_DESC_RING_BASE(i) (TDMA_DESC_RING_00_BASE + \
392 ((i) * TDMA_DESC_RING_SIZE))
393
394/* Ring indexed register addreses */
395#define TDMA_DESC_RING_HEAD_TAIL_PTR(i) (TDMA_DESC_RING_BASE(i) + \
396 RING_HEAD_TAIL_PTR)
397#define TDMA_DESC_RING_COUNT(i) (TDMA_DESC_RING_BASE(i) + \
398 RING_COUNT)
399#define TDMA_DESC_RING_MAX_HYST(i) (TDMA_DESC_RING_BASE(i) + \
400 RING_MAX_HYST)
401#define TDMA_DESC_RING_INTR_CONTROL(i) (TDMA_DESC_RING_BASE(i) + \
402 RING_INTR_CONTROL)
403#define TDMA_DESC_RING_PROD_CONS_INDEX(i) \
404 (TDMA_DESC_RING_BASE(i) + \
405 RING_PROD_CONS_INDEX)
406#define TDMA_DESC_RING_MAPPING(i) (TDMA_DESC_RING_BASE(i) + \
407 RING_MAPPING)
408#define TDMA_DESC_RING_PCP_DEI_VID(i) (TDMA_DESC_RING_BASE(i) + \
409 RING_PCP_DEI_VID)
410
411#define TDMA_CONTROL 0x600
412#define TDMA_EN (1 << 0)
413#define TSB_EN (1 << 1)
414#define TSB_SWAP (1 << 2)
415#define ACB_ALGO (1 << 3)
416#define BUF_DATA_OFFSET_SHIFT 4
417#define BUF_DATA_OFFSET_MASK 0x3ff
418#define VLAN_EN (1 << 14)
419#define SW_BRCM_TAG (1 << 15)
420#define WNC_KPT_SIZE_UPDATE (1 << 16)
421#define SYNC_PKT_SIZE (1 << 17)
422#define ACH_TXDONE_DELAY_SHIFT 18
423#define ACH_TXDONE_DELAY_MASK 0xff
424
425#define TDMA_STATUS 0x604
426#define TDMA_DISABLED (1 << 0)
427#define TDMA_LL_RAM_INIT_BUSY (1 << 1)
428
429#define TDMA_SCB_BURST_SIZE 0x608
430#define TDMA_OVER_MAX_THRESH_STATUS 0x60c
431#define TDMA_OVER_HYST_THRESH_STATUS 0x610
432#define TDMA_TPID 0x614
433
434#define TDMA_FREE_LIST_HEAD_TAIL_PTR 0x618
435#define TDMA_FREE_HEAD_MASK 0x7ff
436#define TDMA_FREE_TAIL_SHIFT 11
437#define TDMA_FREE_TAIL_MASK 0x7ff
438
439#define TDMA_FREE_LIST_COUNT 0x61c
440#define TDMA_FREE_LIST_COUNT_MASK 0x7ff
441
442#define TDMA_TIER2_ARB_CTRL 0x620
443#define TDMA_ARB_MODE_RR 0
444#define TDMA_ARB_MODE_WEIGHT_RR 0x1
445#define TDMA_ARB_MODE_STRICT 0x2
446#define TDMA_ARB_MODE_DEFICIT_RR 0x3
447#define TDMA_CREDIT_SHIFT 4
448#define TDMA_CREDIT_MASK 0xffff
449
450#define TDMA_TIER1_ARB_0_CTRL 0x624
451#define TDMA_ARB_EN (1 << 0)
452
453#define TDMA_TIER1_ARB_0_QUEUE_EN 0x628
454#define TDMA_TIER1_ARB_1_CTRL 0x62c
455#define TDMA_TIER1_ARB_1_QUEUE_EN 0x630
456#define TDMA_TIER1_ARB_2_CTRL 0x634
457#define TDMA_TIER1_ARB_2_QUEUE_EN 0x638
458#define TDMA_TIER1_ARB_3_CTRL 0x63c
459#define TDMA_TIER1_ARB_3_QUEUE_EN 0x640
460
461#define TDMA_SCB_ENDIAN_OVERRIDE 0x644
462#define TDMA_LE_MODE (1 << 0)
463#define TDMA_REG_MODE (1 << 1)
464
465#define TDMA_TEST 0x648
466#define TDMA_TP_OUT_SEL (1 << 0)
467#define TDMA_MEM_TM (1 << 1)
468
469#define TDMA_DEBUG 0x64c
470
471/* Transmit/Receive descriptor */
472struct dma_desc {
473 u32 addr_status_len;
474 u32 addr_lo;
475};
476
477/* Number of Receive hardware descriptor words */
478#define NUM_HW_RX_DESC_WORDS 1024
479/* Real number of usable descriptors */
480#define NUM_RX_DESC (NUM_HW_RX_DESC_WORDS / WORDS_PER_DESC)
481
482/* Internal linked-list RAM has up to 1536 entries */
483#define NUM_TX_DESC 1536
484
485#define WORDS_PER_DESC (sizeof(struct dma_desc) / sizeof(u32))
486
487/* Rx/Tx common counter group.*/
488struct bcm_sysport_pkt_counters {
489 u32 cnt_64; /* RO Received/Transmited 64 bytes packet */
490 u32 cnt_127; /* RO Rx/Tx 127 bytes packet */
491 u32 cnt_255; /* RO Rx/Tx 65-255 bytes packet */
492 u32 cnt_511; /* RO Rx/Tx 256-511 bytes packet */
493 u32 cnt_1023; /* RO Rx/Tx 512-1023 bytes packet */
494 u32 cnt_1518; /* RO Rx/Tx 1024-1518 bytes packet */
495 u32 cnt_mgv; /* RO Rx/Tx 1519-1522 good VLAN packet */
496 u32 cnt_2047; /* RO Rx/Tx 1522-2047 bytes packet*/
497 u32 cnt_4095; /* RO Rx/Tx 2048-4095 bytes packet*/
498 u32 cnt_9216; /* RO Rx/Tx 4096-9216 bytes packet*/
499};
500
501/* RSV, Receive Status Vector */
502struct bcm_sysport_rx_counters {
503 struct bcm_sysport_pkt_counters pkt_cnt;
504 u32 pkt; /* RO (0x428) Received pkt count*/
505 u32 bytes; /* RO Received byte count */
506 u32 mca; /* RO # of Received multicast pkt */
507 u32 bca; /* RO # of Receive broadcast pkt */
508 u32 fcs; /* RO # of Received FCS error */
509 u32 cf; /* RO # of Received control frame pkt*/
510 u32 pf; /* RO # of Received pause frame pkt */
511 u32 uo; /* RO # of unknown op code pkt */
512 u32 aln; /* RO # of alignment error count */
513 u32 flr; /* RO # of frame length out of range count */
514 u32 cde; /* RO # of code error pkt */
515 u32 fcr; /* RO # of carrier sense error pkt */
516 u32 ovr; /* RO # of oversize pkt*/
517 u32 jbr; /* RO # of jabber count */
518 u32 mtue; /* RO # of MTU error pkt*/
519 u32 pok; /* RO # of Received good pkt */
520 u32 uc; /* RO # of unicast pkt */
521 u32 ppp; /* RO # of PPP pkt */
522 u32 rcrc; /* RO (0x470),# of CRC match pkt */
523};
524
525/* TSV, Transmit Status Vector */
526struct bcm_sysport_tx_counters {
527 struct bcm_sysport_pkt_counters pkt_cnt;
528 u32 pkts; /* RO (0x4a8) Transmited pkt */
529 u32 mca; /* RO # of xmited multicast pkt */
530 u32 bca; /* RO # of xmited broadcast pkt */
531 u32 pf; /* RO # of xmited pause frame count */
532 u32 cf; /* RO # of xmited control frame count */
533 u32 fcs; /* RO # of xmited FCS error count */
534 u32 ovr; /* RO # of xmited oversize pkt */
535 u32 drf; /* RO # of xmited deferral pkt */
536 u32 edf; /* RO # of xmited Excessive deferral pkt*/
537 u32 scl; /* RO # of xmited single collision pkt */
538 u32 mcl; /* RO # of xmited multiple collision pkt*/
539 u32 lcl; /* RO # of xmited late collision pkt */
540 u32 ecl; /* RO # of xmited excessive collision pkt*/
541 u32 frg; /* RO # of xmited fragments pkt*/
542 u32 ncl; /* RO # of xmited total collision count */
543 u32 jbr; /* RO # of xmited jabber count*/
544 u32 bytes; /* RO # of xmited byte count */
545 u32 pok; /* RO # of xmited good pkt */
546 u32 uc; /* RO (0x4f0) # of xmited unicast pkt */
547};
548
549struct bcm_sysport_mib {
550 struct bcm_sysport_rx_counters rx;
551 struct bcm_sysport_tx_counters tx;
552 u32 rx_runt_cnt;
553 u32 rx_runt_fcs;
554 u32 rx_runt_fcs_align;
555 u32 rx_runt_bytes;
556 u32 rxchk_bad_csum;
557 u32 rxchk_other_pkt_disc;
558 u32 rbuf_ovflow_cnt;
559 u32 rbuf_err_cnt;
560 u32 alloc_rx_buff_failed;
561 u32 rx_dma_failed;
562 u32 tx_dma_failed;
563};
564
565/* HW maintains a large list of counters */
566enum bcm_sysport_stat_type {
567 BCM_SYSPORT_STAT_NETDEV = -1,
568 BCM_SYSPORT_STAT_MIB_RX,
569 BCM_SYSPORT_STAT_MIB_TX,
570 BCM_SYSPORT_STAT_RUNT,
571 BCM_SYSPORT_STAT_RXCHK,
572 BCM_SYSPORT_STAT_RBUF,
573 BCM_SYSPORT_STAT_SOFT,
574};
575
576/* Macros to help define ethtool statistics */
577#define STAT_NETDEV(m) { \
578 .stat_string = __stringify(m), \
579 .stat_sizeof = sizeof(((struct net_device_stats *)0)->m), \
580 .stat_offset = offsetof(struct net_device_stats, m), \
581 .type = BCM_SYSPORT_STAT_NETDEV, \
582}
583
584#define STAT_MIB(str, m, _type) { \
585 .stat_string = str, \
586 .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
587 .stat_offset = offsetof(struct bcm_sysport_priv, m), \
588 .type = _type, \
589}
590
591#define STAT_MIB_RX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_RX)
592#define STAT_MIB_TX(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_MIB_TX)
593#define STAT_RUNT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_RUNT)
594#define STAT_MIB_SOFT(str, m) STAT_MIB(str, m, BCM_SYSPORT_STAT_SOFT)
595
596#define STAT_RXCHK(str, m, ofs) { \
597 .stat_string = str, \
598 .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
599 .stat_offset = offsetof(struct bcm_sysport_priv, m), \
600 .type = BCM_SYSPORT_STAT_RXCHK, \
601 .reg_offset = ofs, \
602}
603
604#define STAT_RBUF(str, m, ofs) { \
605 .stat_string = str, \
606 .stat_sizeof = sizeof(((struct bcm_sysport_priv *)0)->m), \
607 .stat_offset = offsetof(struct bcm_sysport_priv, m), \
608 .type = BCM_SYSPORT_STAT_RBUF, \
609 .reg_offset = ofs, \
610}
611
612struct bcm_sysport_stats {
613 char stat_string[ETH_GSTRING_LEN];
614 int stat_sizeof;
615 int stat_offset;
616 enum bcm_sysport_stat_type type;
617 /* reg offset from UMAC base for misc counters */
618 u16 reg_offset;
619};
620
621/* Software house keeping helper structure */
622struct bcm_sysport_cb {
623 struct sk_buff *skb; /* SKB for RX packets */
624 void __iomem *bd_addr; /* Buffer descriptor PHYS addr */
625
626 DEFINE_DMA_UNMAP_ADDR(dma_addr);
627 DEFINE_DMA_UNMAP_LEN(dma_len);
628};
629
630/* Software view of the TX ring */
631struct bcm_sysport_tx_ring {
632 spinlock_t lock; /* Ring lock for tx reclaim/xmit */
633 struct napi_struct napi; /* NAPI per tx queue */
634 dma_addr_t desc_dma; /* DMA cookie */
635 unsigned int index; /* Ring index */
636 unsigned int size; /* Ring current size */
637 unsigned int alloc_size; /* Ring one-time allocated size */
638 unsigned int desc_count; /* Number of descriptors */
639 unsigned int curr_desc; /* Current descriptor */
640 unsigned int c_index; /* Last consumer index */
641 unsigned int p_index; /* Current producer index */
642 struct bcm_sysport_cb *cbs; /* Transmit control blocks */
643 struct dma_desc *desc_cpu; /* CPU view of the descriptor */
644 struct bcm_sysport_priv *priv; /* private context backpointer */
645};
646
647/* Driver private structure */
648struct bcm_sysport_priv {
649 void __iomem *base;
650 u32 irq0_stat;
651 u32 irq0_mask;
652 u32 irq1_stat;
653 u32 irq1_mask;
654 struct napi_struct napi ____cacheline_aligned;
655 struct net_device *netdev;
656 struct platform_device *pdev;
657 int irq0;
658 int irq1;
659 int wol_irq;
660
661 /* Transmit rings */
662 struct bcm_sysport_tx_ring tx_rings[TDMA_NUM_RINGS];
663
664 /* Receive queue */
665 void __iomem *rx_bds;
666 struct bcm_sysport_cb *rx_cbs;
667 unsigned int num_rx_bds;
668 unsigned int rx_read_ptr;
669 unsigned int rx_c_index;
670
671 /* PHY device */
672 struct device_node *phy_dn;
673 struct phy_device *phydev;
674 phy_interface_t phy_interface;
675 int old_pause;
676 int old_link;
677 int old_duplex;
678
679 /* Misc fields */
680 unsigned int rx_chk_en:1;
681 unsigned int tsb_en:1;
682 unsigned int crc_fwd:1;
683 u16 rev;
684 u32 wolopts;
685 unsigned int wol_irq_disabled:1;
686
687 /* MIB related fields */
688 struct bcm_sysport_mib mib;
689
690 /* Ethtool */
691 u32 msg_enable;
692};
693#endif /* __BCM_SYSPORT_H */