1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2 /* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */
3 
4 #ifndef _MLXSW_PCI_HW_H
5 #define _MLXSW_PCI_HW_H
6 
7 #include <linux/bitops.h>
8 
9 #include "item.h"
10 
11 #define MLXSW_PCI_BAR0_SIZE		(1024 * 1024) /* 1MB */
12 #define MLXSW_PCI_PAGE_SIZE		4096
13 
14 #define MLXSW_PCI_CIR_BASE			0x71000
15 #define MLXSW_PCI_CIR_IN_PARAM_HI		MLXSW_PCI_CIR_BASE
16 #define MLXSW_PCI_CIR_IN_PARAM_LO		(MLXSW_PCI_CIR_BASE + 0x04)
17 #define MLXSW_PCI_CIR_IN_MODIFIER		(MLXSW_PCI_CIR_BASE + 0x08)
18 #define MLXSW_PCI_CIR_OUT_PARAM_HI		(MLXSW_PCI_CIR_BASE + 0x0C)
19 #define MLXSW_PCI_CIR_OUT_PARAM_LO		(MLXSW_PCI_CIR_BASE + 0x10)
20 #define MLXSW_PCI_CIR_TOKEN			(MLXSW_PCI_CIR_BASE + 0x14)
21 #define MLXSW_PCI_CIR_CTRL			(MLXSW_PCI_CIR_BASE + 0x18)
22 #define MLXSW_PCI_CIR_CTRL_GO_BIT		BIT(23)
23 #define MLXSW_PCI_CIR_CTRL_EVREQ_BIT		BIT(22)
24 #define MLXSW_PCI_CIR_CTRL_OPCODE_MOD_SHIFT	12
25 #define MLXSW_PCI_CIR_CTRL_STATUS_SHIFT		24
26 #define MLXSW_PCI_CIR_TIMEOUT_MSECS		1000
27 
28 #define MLXSW_PCI_SW_RESET_TIMEOUT_MSECS	900000
29 #define MLXSW_PCI_SW_RESET_WAIT_MSECS		200
30 #define MLXSW_PCI_FW_READY			0xA1844
31 #define MLXSW_PCI_FW_READY_MASK			0xFFFF
32 #define MLXSW_PCI_FW_READY_MAGIC		0x5E
33 
34 #define MLXSW_PCI_DOORBELL_SDQ_OFFSET		0x000
35 #define MLXSW_PCI_DOORBELL_RDQ_OFFSET		0x200
36 #define MLXSW_PCI_DOORBELL_CQ_OFFSET		0x400
37 #define MLXSW_PCI_DOORBELL_EQ_OFFSET		0x600
38 #define MLXSW_PCI_DOORBELL_ARM_CQ_OFFSET	0x800
39 #define MLXSW_PCI_DOORBELL_ARM_EQ_OFFSET	0xA00
40 
41 #define MLXSW_PCI_DOORBELL(offset, type_offset, num)	\
42 	((offset) + (type_offset) + (num) * 4)
43 
44 #define MLXSW_PCI_CQS_MAX	96
45 #define MLXSW_PCI_EQS_COUNT	2
46 #define MLXSW_PCI_EQ_ASYNC_NUM	0
47 #define MLXSW_PCI_EQ_COMP_NUM	1
48 
49 #define MLXSW_PCI_SDQS_MIN	2 /* EMAD and control traffic */
50 #define MLXSW_PCI_SDQ_EMAD_INDEX	0
51 #define MLXSW_PCI_SDQ_EMAD_TC	0
52 #define MLXSW_PCI_SDQ_CTL_TC	3
53 
54 #define MLXSW_PCI_AQ_PAGES	8
55 #define MLXSW_PCI_AQ_SIZE	(MLXSW_PCI_PAGE_SIZE * MLXSW_PCI_AQ_PAGES)
56 #define MLXSW_PCI_WQE_SIZE	32 /* 32 bytes per element */
57 #define MLXSW_PCI_CQE01_SIZE	16 /* 16 bytes per element */
58 #define MLXSW_PCI_CQE2_SIZE	32 /* 32 bytes per element */
59 #define MLXSW_PCI_CQE_SIZE_MAX	MLXSW_PCI_CQE2_SIZE
60 #define MLXSW_PCI_EQE_SIZE	16 /* 16 bytes per element */
61 #define MLXSW_PCI_WQE_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_WQE_SIZE)
62 #define MLXSW_PCI_CQE01_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE01_SIZE)
63 #define MLXSW_PCI_CQE2_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_CQE2_SIZE)
64 #define MLXSW_PCI_EQE_COUNT	(MLXSW_PCI_AQ_SIZE / MLXSW_PCI_EQE_SIZE)
65 #define MLXSW_PCI_EQE_UPDATE_COUNT	0x80
66 
67 #define MLXSW_PCI_WQE_SG_ENTRIES	3
68 #define MLXSW_PCI_WQE_TYPE_ETHERNET	0xA
69 
70 /* pci_wqe_c
71  * If set it indicates that a completion should be reported upon
72  * execution of this descriptor.
73  */
74 MLXSW_ITEM32(pci, wqe, c, 0x00, 31, 1);
75 
76 /* pci_wqe_lp
77  * Local Processing, set if packet should be processed by the local
78  * switch hardware:
79  * For Ethernet EMAD (Direct Route and non Direct Route) -
80  * must be set if packet destination is local device
81  * For InfiniBand CTL - must be set if packet destination is local device
82  * Otherwise it must be clear
83  * Local Process packets must not exceed the size of 2K (including payload
84  * and headers).
85  */
86 MLXSW_ITEM32(pci, wqe, lp, 0x00, 30, 1);
87 
88 /* pci_wqe_type
89  * Packet type.
90  */
91 MLXSW_ITEM32(pci, wqe, type, 0x00, 23, 4);
92 
93 /* pci_wqe_byte_count
94  * Size of i-th scatter/gather entry, 0 if entry is unused.
95  */
96 MLXSW_ITEM16_INDEXED(pci, wqe, byte_count, 0x02, 0, 14, 0x02, 0x00, false);
97 
98 /* pci_wqe_address
99  * Physical address of i-th scatter/gather entry.
100  * Gather Entries must be 2Byte aligned.
101  */
102 MLXSW_ITEM64_INDEXED(pci, wqe, address, 0x08, 0, 64, 0x8, 0x0, false);
103 
104 enum mlxsw_pci_cqe_v {
105 	MLXSW_PCI_CQE_V0,
106 	MLXSW_PCI_CQE_V1,
107 	MLXSW_PCI_CQE_V2,
108 };
109 
110 #define mlxsw_pci_cqe_item_helpers(name, v0, v1, v2)				\
111 static inline u32 mlxsw_pci_cqe_##name##_get(enum mlxsw_pci_cqe_v v, char *cqe)	\
112 {										\
113 	switch (v) {								\
114 	default:								\
115 	case MLXSW_PCI_CQE_V0:							\
116 		return mlxsw_pci_cqe##v0##_##name##_get(cqe);			\
117 	case MLXSW_PCI_CQE_V1:							\
118 		return mlxsw_pci_cqe##v1##_##name##_get(cqe);			\
119 	case MLXSW_PCI_CQE_V2:							\
120 		return mlxsw_pci_cqe##v2##_##name##_get(cqe);			\
121 	}									\
122 }										\
123 static inline void mlxsw_pci_cqe_##name##_set(enum mlxsw_pci_cqe_v v,		\
124 					      char *cqe, u32 val)		\
125 {										\
126 	switch (v) {								\
127 	default:								\
128 	case MLXSW_PCI_CQE_V0:							\
129 		mlxsw_pci_cqe##v0##_##name##_set(cqe, val);			\
130 		break;								\
131 	case MLXSW_PCI_CQE_V1:							\
132 		mlxsw_pci_cqe##v1##_##name##_set(cqe, val);			\
133 		break;								\
134 	case MLXSW_PCI_CQE_V2:							\
135 		mlxsw_pci_cqe##v2##_##name##_set(cqe, val);			\
136 		break;								\
137 	}									\
138 }
139 
140 /* pci_cqe_lag
141  * Packet arrives from a port which is a LAG
142  */
143 MLXSW_ITEM32(pci, cqe0, lag, 0x00, 23, 1);
144 MLXSW_ITEM32(pci, cqe12, lag, 0x00, 24, 1);
145 mlxsw_pci_cqe_item_helpers(lag, 0, 12, 12);
146 
147 /* pci_cqe_system_port/lag_id
148  * When lag=0: System port on which the packet was received
149  * When lag=1:
150  * bits [15:4] LAG ID on which the packet was received
151  * bits [3:0] sub_port on which the packet was received
152  */
153 MLXSW_ITEM32(pci, cqe, system_port, 0x00, 0, 16);
154 MLXSW_ITEM32(pci, cqe0, lag_id, 0x00, 4, 12);
155 MLXSW_ITEM32(pci, cqe12, lag_id, 0x00, 0, 16);
156 mlxsw_pci_cqe_item_helpers(lag_id, 0, 12, 12);
157 MLXSW_ITEM32(pci, cqe0, lag_subport, 0x00, 0, 4);
158 MLXSW_ITEM32(pci, cqe12, lag_subport, 0x00, 16, 8);
159 mlxsw_pci_cqe_item_helpers(lag_subport, 0, 12, 12);
160 
161 /* pci_cqe_wqe_counter
162  * WQE count of the WQEs completed on the associated dqn
163  */
164 MLXSW_ITEM32(pci, cqe, wqe_counter, 0x04, 16, 16);
165 
166 /* pci_cqe_byte_count
167  * Byte count of received packets including additional two
168  * Reserved Bytes that are append to the end of the frame.
169  * Reserved for Send CQE.
170  */
171 MLXSW_ITEM32(pci, cqe, byte_count, 0x04, 0, 14);
172 
173 #define MLXSW_PCI_CQE2_MIRROR_CONG_INVALID	0xFFFF
174 
175 /* pci_cqe_mirror_cong_high
176  * Congestion level in units of 8KB of the egress traffic class of the original
177  * packet that does mirroring to the CPU. Value of 0xFFFF means that the
178  * congestion level is invalid.
179  */
180 MLXSW_ITEM32(pci, cqe2, mirror_cong_high, 0x08, 16, 4);
181 
182 /* pci_cqe_trap_id
183  * Trap ID that captured the packet.
184  */
185 MLXSW_ITEM32(pci, cqe, trap_id, 0x08, 0, 10);
186 
187 /* pci_cqe_crc
188  * Length include CRC. Indicates the length field includes
189  * the packet's CRC.
190  */
191 MLXSW_ITEM32(pci, cqe0, crc, 0x0C, 8, 1);
192 MLXSW_ITEM32(pci, cqe12, crc, 0x0C, 9, 1);
193 mlxsw_pci_cqe_item_helpers(crc, 0, 12, 12);
194 
195 /* pci_cqe_e
196  * CQE with Error.
197  */
198 MLXSW_ITEM32(pci, cqe0, e, 0x0C, 7, 1);
199 MLXSW_ITEM32(pci, cqe12, e, 0x00, 27, 1);
200 mlxsw_pci_cqe_item_helpers(e, 0, 12, 12);
201 
202 /* pci_cqe_sr
203  * 1 - Send Queue
204  * 0 - Receive Queue
205  */
206 MLXSW_ITEM32(pci, cqe0, sr, 0x0C, 6, 1);
207 MLXSW_ITEM32(pci, cqe12, sr, 0x00, 26, 1);
208 mlxsw_pci_cqe_item_helpers(sr, 0, 12, 12);
209 
210 /* pci_cqe_dqn
211  * Descriptor Queue (DQ) Number.
212  */
213 MLXSW_ITEM32(pci, cqe0, dqn, 0x0C, 1, 5);
214 MLXSW_ITEM32(pci, cqe12, dqn, 0x0C, 1, 6);
215 mlxsw_pci_cqe_item_helpers(dqn, 0, 12, 12);
216 
217 /* pci_cqe_time_stamp_low
218  * Time stamp of the CQE
219  * Format according to time_stamp_type:
220  * 0: uSec - 1.024uSec (default for devices which do not support
221  * time_stamp_type). Only bits 15:0 are valid
222  * 1: FRC - Free Running Clock - units of 1nSec
223  * 2: UTC - time_stamp[37:30] = Sec
224  *	  - time_stamp[29:0] = nSec
225  * 3: Mirror_UTC. UTC time stamp of the original packet that has
226  * MIRROR_SESSION traps
227  *   - time_stamp[37:30] = Sec
228  *   - time_stamp[29:0] = nSec
229  *   Formats 0..2 are configured by
230  *   CONFIG_PROFILE.cqe_time_stamp_type for PTP traps
231  *   Format 3 is used for MIRROR_SESSION traps
232  *   Note that Spectrum does not reveal FRC, UTC and Mirror_UTC
233  */
234 MLXSW_ITEM32(pci, cqe2, time_stamp_low, 0x0C, 16, 16);
235 
236 #define MLXSW_PCI_CQE2_MIRROR_TCLASS_INVALID	0x1F
237 
238 /* pci_cqe_mirror_tclass
239  * The egress traffic class of the original packet that does mirroring to the
240  * CPU. Value of 0x1F means that the traffic class is invalid.
241  */
242 MLXSW_ITEM32(pci, cqe2, mirror_tclass, 0x10, 27, 5);
243 
244 /* pci_cqe_tx_lag
245  * The Tx port of a packet that is mirrored / sampled to the CPU is a LAG.
246  */
247 MLXSW_ITEM32(pci, cqe2, tx_lag, 0x10, 24, 1);
248 
249 /* pci_cqe_tx_lag_subport
250  * The port index within the LAG of a packet that is mirrored / sampled to the
251  * CPU. Reserved when tx_lag is 0.
252  */
253 MLXSW_ITEM32(pci, cqe2, tx_lag_subport, 0x10, 16, 8);
254 
255 #define MLXSW_PCI_CQE2_TX_PORT_MULTI_PORT	0xFFFE
256 #define MLXSW_PCI_CQE2_TX_PORT_INVALID		0xFFFF
257 
258 /* pci_cqe_tx_lag_id
259  * The Tx LAG ID of the original packet that is mirrored / sampled to the CPU.
260  * Value of 0xFFFE means multi-port. Value fo 0xFFFF means that the Tx LAG ID
261  * is invalid. Reserved when tx_lag is 0.
262  */
263 MLXSW_ITEM32(pci, cqe2, tx_lag_id, 0x10, 0, 16);
264 
265 /* pci_cqe_tx_system_port
266  * The Tx port of the original packet that is mirrored / sampled to the CPU.
267  * Value of 0xFFFE means multi-port. Value fo 0xFFFF means that the Tx port is
268  * invalid. Reserved when tx_lag is 1.
269  */
270 MLXSW_ITEM32(pci, cqe2, tx_system_port, 0x10, 0, 16);
271 
272 /* pci_cqe_mirror_cong_low
273  * Congestion level in units of 8KB of the egress traffic class of the original
274  * packet that does mirroring to the CPU. Value of 0xFFFF means that the
275  * congestion level is invalid.
276  */
277 MLXSW_ITEM32(pci, cqe2, mirror_cong_low, 0x14, 20, 12);
278 
279 #define MLXSW_PCI_CQE2_MIRROR_CONG_SHIFT	13	/* Units of 8KB. */
280 
mlxsw_pci_cqe2_mirror_cong_get(const char * cqe)281 static inline u16 mlxsw_pci_cqe2_mirror_cong_get(const char *cqe)
282 {
283 	u16 cong_high = mlxsw_pci_cqe2_mirror_cong_high_get(cqe);
284 	u16 cong_low = mlxsw_pci_cqe2_mirror_cong_low_get(cqe);
285 
286 	return cong_high << 12 | cong_low;
287 }
288 
289 /* pci_cqe_user_def_val_orig_pkt_len
290  * When trap_id is an ACL: User defined value from policy engine action.
291  */
292 MLXSW_ITEM32(pci, cqe2, user_def_val_orig_pkt_len, 0x14, 0, 20);
293 
294 /* pci_cqe_mirror_reason
295  * Mirror reason.
296  */
297 MLXSW_ITEM32(pci, cqe2, mirror_reason, 0x18, 24, 8);
298 
299 enum mlxsw_pci_cqe_time_stamp_type {
300 	MLXSW_PCI_CQE_TIME_STAMP_TYPE_USEC,
301 	MLXSW_PCI_CQE_TIME_STAMP_TYPE_FRC,
302 	MLXSW_PCI_CQE_TIME_STAMP_TYPE_UTC,
303 	MLXSW_PCI_CQE_TIME_STAMP_TYPE_MIRROR_UTC,
304 };
305 
306 /* pci_cqe_time_stamp_type
307  * Time stamp type:
308  * 0: uSec - 1.024uSec (default for devices which do not support
309  * time_stamp_type)
310  * 1: FRC - Free Running Clock - units of 1nSec
311  * 2: UTC
312  * 3: Mirror_UTC. UTC time stamp of the original packet that has
313  * MIRROR_SESSION traps
314  */
315 MLXSW_ITEM32(pci, cqe2, time_stamp_type, 0x18, 22, 2);
316 
317 #define MLXSW_PCI_CQE2_MIRROR_LATENCY_INVALID	0xFFFFFF
318 
319 /* pci_cqe_time_stamp_high
320  * Time stamp of the CQE
321  * Format according to time_stamp_type:
322  * 0: uSec - 1.024uSec (default for devices which do not support
323  * time_stamp_type). Only bits 15:0 are valid
324  * 1: FRC - Free Running Clock - units of 1nSec
325  * 2: UTC - time_stamp[37:30] = Sec
326  *	  - time_stamp[29:0] = nSec
327  * 3: Mirror_UTC. UTC time stamp of the original packet that has
328  * MIRROR_SESSION traps
329  *   - time_stamp[37:30] = Sec
330  *   - time_stamp[29:0] = nSec
331  *   Formats 0..2 are configured by
332  *   CONFIG_PROFILE.cqe_time_stamp_type for PTP traps
333  *   Format 3 is used for MIRROR_SESSION traps
334  *   Note that Spectrum does not reveal FRC, UTC and Mirror_UTC
335  */
336 MLXSW_ITEM32(pci, cqe2, time_stamp_high, 0x18, 0, 22);
337 
mlxsw_pci_cqe2_time_stamp_get(const char * cqe)338 static inline u64 mlxsw_pci_cqe2_time_stamp_get(const char *cqe)
339 {
340 	u64 ts_high = mlxsw_pci_cqe2_time_stamp_high_get(cqe);
341 	u64 ts_low = mlxsw_pci_cqe2_time_stamp_low_get(cqe);
342 
343 	return ts_high << 16 | ts_low;
344 }
345 
mlxsw_pci_cqe2_time_stamp_sec_get(const char * cqe)346 static inline u8 mlxsw_pci_cqe2_time_stamp_sec_get(const char *cqe)
347 {
348 	u64 full_ts = mlxsw_pci_cqe2_time_stamp_get(cqe);
349 
350 	return full_ts >> 30 & 0xFF;
351 }
352 
mlxsw_pci_cqe2_time_stamp_nsec_get(const char * cqe)353 static inline u32 mlxsw_pci_cqe2_time_stamp_nsec_get(const char *cqe)
354 {
355 	u64 full_ts = mlxsw_pci_cqe2_time_stamp_get(cqe);
356 
357 	return full_ts & 0x3FFFFFFF;
358 }
359 
360 /* pci_cqe_mirror_latency
361  * End-to-end latency of the original packet that does mirroring to the CPU.
362  * Value of 0xFFFFFF means that the latency is invalid. Units are according to
363  * MOGCR.mirror_latency_units.
364  */
365 MLXSW_ITEM32(pci, cqe2, mirror_latency, 0x1C, 8, 24);
366 
367 /* pci_cqe_owner
368  * Ownership bit.
369  */
370 MLXSW_ITEM32(pci, cqe01, owner, 0x0C, 0, 1);
371 MLXSW_ITEM32(pci, cqe2, owner, 0x1C, 0, 1);
372 mlxsw_pci_cqe_item_helpers(owner, 01, 01, 2);
373 
374 /* pci_eqe_event_type
375  * Event type.
376  */
377 MLXSW_ITEM32(pci, eqe, event_type, 0x0C, 24, 8);
378 #define MLXSW_PCI_EQE_EVENT_TYPE_COMP	0x00
379 #define MLXSW_PCI_EQE_EVENT_TYPE_CMD	0x0A
380 
381 /* pci_eqe_event_sub_type
382  * Event type.
383  */
384 MLXSW_ITEM32(pci, eqe, event_sub_type, 0x0C, 16, 8);
385 
386 /* pci_eqe_cqn
387  * Completion Queue that triggered this EQE.
388  */
389 MLXSW_ITEM32(pci, eqe, cqn, 0x0C, 8, 7);
390 
391 /* pci_eqe_owner
392  * Ownership bit.
393  */
394 MLXSW_ITEM32(pci, eqe, owner, 0x0C, 0, 1);
395 
396 /* pci_eqe_cmd_token
397  * Command completion event - token
398  */
399 MLXSW_ITEM32(pci, eqe, cmd_token, 0x00, 16, 16);
400 
401 /* pci_eqe_cmd_status
402  * Command completion event - status
403  */
404 MLXSW_ITEM32(pci, eqe, cmd_status, 0x00, 0, 8);
405 
406 /* pci_eqe_cmd_out_param_h
407  * Command completion event - output parameter - higher part
408  */
409 MLXSW_ITEM32(pci, eqe, cmd_out_param_h, 0x04, 0, 32);
410 
411 /* pci_eqe_cmd_out_param_l
412  * Command completion event - output parameter - lower part
413  */
414 MLXSW_ITEM32(pci, eqe, cmd_out_param_l, 0x08, 0, 32);
415 
416 #endif
417