1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
2/*
3 * Copyright(c) 2015 - 2017 Intel Corporation.
4 */
5
6#ifndef _HFI1_MAD_H
7#define _HFI1_MAD_H
8
9#include <rdma/ib_pma.h>
10#include <rdma/opa_smi.h>
11#include <rdma/opa_port_info.h>
12#include "opa_compat.h"
13
14/*
15 * OPA Traps
16 */
17#define OPA_TRAP_GID_NOW_IN_SERVICE             cpu_to_be16(64)
18#define OPA_TRAP_GID_OUT_OF_SERVICE             cpu_to_be16(65)
19#define OPA_TRAP_ADD_MULTICAST_GROUP            cpu_to_be16(66)
20#define OPA_TRAL_DEL_MULTICAST_GROUP            cpu_to_be16(67)
21#define OPA_TRAP_UNPATH                         cpu_to_be16(68)
22#define OPA_TRAP_REPATH                         cpu_to_be16(69)
23#define OPA_TRAP_PORT_CHANGE_STATE              cpu_to_be16(128)
24#define OPA_TRAP_LINK_INTEGRITY                 cpu_to_be16(129)
25#define OPA_TRAP_EXCESSIVE_BUFFER_OVERRUN       cpu_to_be16(130)
26#define OPA_TRAP_FLOW_WATCHDOG                  cpu_to_be16(131)
27#define OPA_TRAP_CHANGE_CAPABILITY              cpu_to_be16(144)
28#define OPA_TRAP_CHANGE_SYSGUID                 cpu_to_be16(145)
29#define OPA_TRAP_BAD_M_KEY                      cpu_to_be16(256)
30#define OPA_TRAP_BAD_P_KEY                      cpu_to_be16(257)
31#define OPA_TRAP_BAD_Q_KEY                      cpu_to_be16(258)
32#define OPA_TRAP_SWITCH_BAD_PKEY                cpu_to_be16(259)
33#define OPA_SMA_TRAP_DATA_LINK_WIDTH            cpu_to_be16(2048)
34
35/*
36 * Generic trap/notice other local changes flags (trap 144).
37 */
38#define	OPA_NOTICE_TRAP_LWDE_CHG        0x08 /* Link Width Downgrade Enable
39					      * changed
40					      */
41#define OPA_NOTICE_TRAP_LSE_CHG         0x04 /* Link Speed Enable changed */
42#define OPA_NOTICE_TRAP_LWE_CHG         0x02 /* Link Width Enable changed */
43#define OPA_NOTICE_TRAP_NODE_DESC_CHG   0x01
44
45struct opa_mad_notice_attr {
46	u8 generic_type;
47	u8 prod_type_msb;
48	__be16 prod_type_lsb;
49	__be16 trap_num;
50	__be16 toggle_count;
51	__be32 issuer_lid;
52	__be32 reserved1;
53	union ib_gid issuer_gid;
54
55	union {
56		struct {
57			u8	details[64];
58		} raw_data;
59
60		struct {
61			union ib_gid	gid;
62		} __packed ntc_64_65_66_67;
63
64		struct {
65			__be32	lid;
66		} __packed ntc_128;
67
68		struct {
69			__be32	lid;		/* where violation happened */
70			u8	port_num;	/* where violation happened */
71		} __packed ntc_129_130_131;
72
73		struct {
74			__be32	lid;		/* LID where change occurred */
75			__be32	new_cap_mask;	/* new capability mask */
76			__be16	reserved2;
77			__be16	cap_mask3;
78			__be16	change_flags;	/* low 4 bits only */
79		} __packed ntc_144;
80
81		struct {
82			__be64	new_sys_guid;
83			__be32	lid;		/* lid where sys guid changed */
84		} __packed ntc_145;
85
86		struct {
87			__be32	lid;
88			__be32	dr_slid;
89			u8	method;
90			u8	dr_trunc_hop;
91			__be16	attr_id;
92			__be32	attr_mod;
93			__be64	mkey;
94			u8	dr_rtn_path[30];
95		} __packed ntc_256;
96
97		struct {
98			__be32		lid1;
99			__be32		lid2;
100			__be32		key;
101			u8		sl;	/* SL: high 5 bits */
102			u8		reserved3[3];
103			union ib_gid	gid1;
104			union ib_gid	gid2;
105			__be32		qp1;	/* high 8 bits reserved */
106			__be32		qp2;	/* high 8 bits reserved */
107		} __packed ntc_257_258;
108
109		struct {
110			__be16		flags;	/* low 8 bits reserved */
111			__be16		pkey;
112			__be32		lid1;
113			__be32		lid2;
114			u8		sl;	/* SL: high 5 bits */
115			u8		reserved4[3];
116			union ib_gid	gid1;
117			union ib_gid	gid2;
118			__be32		qp1;	/* high 8 bits reserved */
119			__be32		qp2;	/* high 8 bits reserved */
120		} __packed ntc_259;
121
122		struct {
123			__be32	lid;
124		} __packed ntc_2048;
125
126	};
127	u8	class_data[];
128};
129
130#define IB_VLARB_LOWPRI_0_31    1
131#define IB_VLARB_LOWPRI_32_63   2
132#define IB_VLARB_HIGHPRI_0_31   3
133#define IB_VLARB_HIGHPRI_32_63  4
134
135#define OPA_MAX_PREEMPT_CAP         32
136#define OPA_VLARB_LOW_ELEMENTS       0
137#define OPA_VLARB_HIGH_ELEMENTS      1
138#define OPA_VLARB_PREEMPT_ELEMENTS   2
139#define OPA_VLARB_PREEMPT_MATRIX     3
140
141#define IB_PMA_PORT_COUNTERS_CONG       cpu_to_be16(0xFF00)
142#define LINK_SPEED_25G		1
143#define LINK_SPEED_12_5G	2
144#define LINK_WIDTH_DEFAULT	4
145#define DECIMAL_FACTORING	1000
146/*
147 * The default link width is multiplied by 1000
148 * to get accurate value after division.
149 */
150#define FACTOR_LINK_WIDTH	(LINK_WIDTH_DEFAULT * DECIMAL_FACTORING)
151
152struct ib_pma_portcounters_cong {
153	u8 reserved;
154	u8 reserved1;
155	__be16 port_check_rate;
156	__be16 symbol_error_counter;
157	u8 link_error_recovery_counter;
158	u8 link_downed_counter;
159	__be16 port_rcv_errors;
160	__be16 port_rcv_remphys_errors;
161	__be16 port_rcv_switch_relay_errors;
162	__be16 port_xmit_discards;
163	u8 port_xmit_constraint_errors;
164	u8 port_rcv_constraint_errors;
165	u8 reserved2;
166	u8 link_overrun_errors; /* LocalLink: 7:4, BufferOverrun: 3:0 */
167	__be16 reserved3;
168	__be16 vl15_dropped;
169	__be64 port_xmit_data;
170	__be64 port_rcv_data;
171	__be64 port_xmit_packets;
172	__be64 port_rcv_packets;
173	__be64 port_xmit_wait;
174	__be64 port_adr_events;
175} __packed;
176
177#define IB_SMP_UNSUP_VERSION    cpu_to_be16(0x0004)
178#define IB_SMP_UNSUP_METHOD     cpu_to_be16(0x0008)
179#define IB_SMP_UNSUP_METH_ATTR  cpu_to_be16(0x000C)
180#define IB_SMP_INVALID_FIELD    cpu_to_be16(0x001C)
181
182#define OPA_MAX_PREEMPT_CAP         32
183#define OPA_VLARB_LOW_ELEMENTS       0
184#define OPA_VLARB_HIGH_ELEMENTS      1
185#define OPA_VLARB_PREEMPT_ELEMENTS   2
186#define OPA_VLARB_PREEMPT_MATRIX     3
187
188#define HFI1_XMIT_RATE_UNSUPPORTED               0x0
189#define HFI1_XMIT_RATE_PICO                      0x7
190/* number of 4nsec cycles equaling 2secs */
191#define HFI1_CONG_TIMER_PSINTERVAL               0x1DCD64EC
192
193#define IB_CC_SVCTYPE_RC 0x0
194#define IB_CC_SVCTYPE_UC 0x1
195#define IB_CC_SVCTYPE_RD 0x2
196#define IB_CC_SVCTYPE_UD 0x3
197
198/*
199 * There should be an equivalent IB #define for the following, but
200 * I cannot find it.
201 */
202#define OPA_CC_LOG_TYPE_HFI	2
203
204struct opa_hfi1_cong_log_event_internal {
205	u32 lqpn;
206	u32 rqpn;
207	u8 sl;
208	u8 svc_type;
209	u32 rlid;
210	u64 timestamp; /* wider than 32 bits to detect 32 bit rollover */
211};
212
213struct opa_hfi1_cong_log_event {
214	u8 local_qp_cn_entry[3];
215	u8 remote_qp_number_cn_entry[3];
216	u8 sl_svc_type_cn_entry; /* 5 bits SL, 3 bits svc type */
217	u8 reserved;
218	__be32 remote_lid_cn_entry;
219	__be32 timestamp_cn_entry;
220} __packed;
221
222#define OPA_CONG_LOG_ELEMS	96
223
224struct opa_hfi1_cong_log {
225	u8 log_type;
226	u8 congestion_flags;
227	__be16 threshold_event_counter;
228	__be32 current_time_stamp;
229	u8 threshold_cong_event_map[OPA_MAX_SLS / 8];
230	struct opa_hfi1_cong_log_event events[OPA_CONG_LOG_ELEMS];
231} __packed;
232
233#define IB_CC_TABLE_CAP_DEFAULT 31
234
235/* Port control flags */
236#define IB_CC_CCS_PC_SL_BASED 0x01
237
238struct opa_congestion_setting_entry {
239	u8 ccti_increase;
240	u8 reserved;
241	__be16 ccti_timer;
242	u8 trigger_threshold;
243	u8 ccti_min; /* min CCTI for cc table */
244} __packed;
245
246struct opa_congestion_setting_entry_shadow {
247	u8 ccti_increase;
248	u8 reserved;
249	u16 ccti_timer;
250	u8 trigger_threshold;
251	u8 ccti_min; /* min CCTI for cc table */
252} __packed;
253
254struct opa_congestion_setting_attr {
255	__be32 control_map;
256	__be16 port_control;
257	struct opa_congestion_setting_entry entries[OPA_MAX_SLS];
258} __packed;
259
260struct opa_congestion_setting_attr_shadow {
261	u32 control_map;
262	u16 port_control;
263	struct opa_congestion_setting_entry_shadow entries[OPA_MAX_SLS];
264} __packed;
265
266#define IB_CC_TABLE_ENTRY_INCREASE_DEFAULT 1
267#define IB_CC_TABLE_ENTRY_TIMER_DEFAULT 1
268
269/* 64 Congestion Control table entries in a single MAD */
270#define IB_CCT_ENTRIES 64
271#define IB_CCT_MIN_ENTRIES (IB_CCT_ENTRIES * 2)
272
273struct ib_cc_table_entry {
274	__be16 entry; /* shift:2, multiplier:14 */
275};
276
277struct ib_cc_table_entry_shadow {
278	u16 entry; /* shift:2, multiplier:14 */
279};
280
281struct ib_cc_table_attr {
282	__be16 ccti_limit; /* max CCTI for cc table */
283	struct ib_cc_table_entry ccti_entries[IB_CCT_ENTRIES];
284} __packed;
285
286struct ib_cc_table_attr_shadow {
287	u16 ccti_limit; /* max CCTI for cc table */
288	struct ib_cc_table_entry_shadow ccti_entries[IB_CCT_ENTRIES];
289} __packed;
290
291#define CC_TABLE_SHADOW_MAX \
292	(IB_CC_TABLE_CAP_DEFAULT * IB_CCT_ENTRIES)
293
294struct cc_table_shadow {
295	u16 ccti_limit; /* max CCTI for cc table */
296	struct ib_cc_table_entry_shadow entries[CC_TABLE_SHADOW_MAX];
297} __packed;
298
299/*
300 * struct cc_state combines the (active) per-port congestion control
301 * table, and the (active) per-SL congestion settings. cc_state data
302 * may need to be read in code paths that we want to be fast, so it
303 * is an RCU protected structure.
304 */
305struct cc_state {
306	struct rcu_head rcu;
307	struct cc_table_shadow cct;
308	struct opa_congestion_setting_attr_shadow cong_setting;
309};
310
311/*
312 * OPA BufferControl MAD
313 */
314
315/* attribute modifier macros */
316#define OPA_AM_NPORT_SHIFT	24
317#define OPA_AM_NPORT_MASK	0xff
318#define OPA_AM_NPORT_SMASK	(OPA_AM_NPORT_MASK << OPA_AM_NPORT_SHIFT)
319#define OPA_AM_NPORT(am)	(((am) >> OPA_AM_NPORT_SHIFT) & \
320					OPA_AM_NPORT_MASK)
321
322#define OPA_AM_NBLK_SHIFT	24
323#define OPA_AM_NBLK_MASK	0xff
324#define OPA_AM_NBLK_SMASK	(OPA_AM_NBLK_MASK << OPA_AM_NBLK_SHIFT)
325#define OPA_AM_NBLK(am)		(((am) >> OPA_AM_NBLK_SHIFT) & \
326					OPA_AM_NBLK_MASK)
327
328#define OPA_AM_START_BLK_SHIFT	0
329#define OPA_AM_START_BLK_MASK	0xff
330#define OPA_AM_START_BLK_SMASK	(OPA_AM_START_BLK_MASK << \
331					OPA_AM_START_BLK_SHIFT)
332#define OPA_AM_START_BLK(am)	(((am) >> OPA_AM_START_BLK_SHIFT) & \
333					OPA_AM_START_BLK_MASK)
334
335#define OPA_AM_PORTNUM_SHIFT	0
336#define OPA_AM_PORTNUM_MASK	0xff
337#define OPA_AM_PORTNUM_SMASK	(OPA_AM_PORTNUM_MASK << OPA_AM_PORTNUM_SHIFT)
338#define OPA_AM_PORTNUM(am)	(((am) >> OPA_AM_PORTNUM_SHIFT) & \
339					OPA_AM_PORTNUM_MASK)
340
341#define OPA_AM_ASYNC_SHIFT	12
342#define OPA_AM_ASYNC_MASK	0x1
343#define OPA_AM_ASYNC_SMASK	(OPA_AM_ASYNC_MASK << OPA_AM_ASYNC_SHIFT)
344#define OPA_AM_ASYNC(am)	(((am) >> OPA_AM_ASYNC_SHIFT) & \
345					OPA_AM_ASYNC_MASK)
346
347#define OPA_AM_START_SM_CFG_SHIFT	9
348#define OPA_AM_START_SM_CFG_MASK	0x1
349#define OPA_AM_START_SM_CFG_SMASK	(OPA_AM_START_SM_CFG_MASK << \
350						OPA_AM_START_SM_CFG_SHIFT)
351#define OPA_AM_START_SM_CFG(am)		(((am) >> OPA_AM_START_SM_CFG_SHIFT) \
352						& OPA_AM_START_SM_CFG_MASK)
353
354#define OPA_AM_CI_ADDR_SHIFT	19
355#define OPA_AM_CI_ADDR_MASK	0xfff
356#define OPA_AM_CI_ADDR_SMASK	(OPA_AM_CI_ADDR_MASK << OPA_CI_ADDR_SHIFT)
357#define OPA_AM_CI_ADDR(am)	(((am) >> OPA_AM_CI_ADDR_SHIFT) & \
358					OPA_AM_CI_ADDR_MASK)
359
360#define OPA_AM_CI_LEN_SHIFT	13
361#define OPA_AM_CI_LEN_MASK	0x3f
362#define OPA_AM_CI_LEN_SMASK	(OPA_AM_CI_LEN_MASK << OPA_CI_LEN_SHIFT)
363#define OPA_AM_CI_LEN(am)	(((am) >> OPA_AM_CI_LEN_SHIFT) & \
364					OPA_AM_CI_LEN_MASK)
365
366/* error info macros */
367#define OPA_EI_STATUS_SMASK	0x80
368#define OPA_EI_CODE_SMASK	0x0f
369
370struct vl_limit {
371	__be16 dedicated;
372	__be16 shared;
373};
374
375struct buffer_control {
376	__be16 reserved;
377	__be16 overall_shared_limit;
378	struct vl_limit vl[OPA_MAX_VLS];
379};
380
381struct sc2vlnt {
382	u8 vlnt[32]; /* 5 bit VL, 3 bits reserved */
383};
384
385/*
386 * The PortSamplesControl.CounterMasks field is an array of 3 bit fields
387 * which specify the N'th counter's capabilities. See ch. 16.1.3.2.
388 * We support 5 counters which only count the mandatory quantities.
389 */
390#define COUNTER_MASK(q, n) (q << ((9 - n) * 3))
391#define COUNTER_MASK0_9 \
392	cpu_to_be32(COUNTER_MASK(1, 0) | \
393		    COUNTER_MASK(1, 1) | \
394		    COUNTER_MASK(1, 2) | \
395		    COUNTER_MASK(1, 3) | \
396		    COUNTER_MASK(1, 4))
397
398void hfi1_event_pkey_change(struct hfi1_devdata *dd, u32 port);
399void hfi1_handle_trap_timer(struct timer_list *t);
400u16 tx_link_width(u16 link_width);
401u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd, u16 link_width,
402			   u16 link_speed, int vl);
403/**
404 * get_link_speed - determine whether 12.5G or 25G speed
405 * @link_speed: the speed of active link
406 * @return: Return 2 if link speed identified as 12.5G
407 * or return 1 if link speed is 25G.
408 *
409 * The function indirectly calculate required link speed
410 * value for convert_xmit_counter function. If the link
411 * speed is 25G, the function return as 1 as it is required
412 * by xmit counter conversion formula :-( 25G / link_speed).
413 * This conversion will provide value 1 if current
414 * link speed is 25G or 2 if 12.5G.This is done to avoid
415 * 12.5 float number conversion.
416 */
417static inline u16 get_link_speed(u16 link_speed)
418{
419	return (link_speed == 1) ?
420		 LINK_SPEED_12_5G : LINK_SPEED_25G;
421}
422
423/**
424 * convert_xmit_counter - calculate flit times for given xmit counter
425 * value
426 * @xmit_wait_val: current xmit counter value
427 * @link_width: width of active link
428 * @link_speed: speed of active link
429 * @return: return xmit counter value in flit times.
430 */
431static inline u64 convert_xmit_counter(u64 xmit_wait_val, u16 link_width,
432				       u16 link_speed)
433{
434	return (xmit_wait_val * 2 * (FACTOR_LINK_WIDTH / link_width)
435		 * link_speed) / DECIMAL_FACTORING;
436}
437#endif				/* _HFI1_MAD_H */
438