1 /*
2  * Copyright (c) 2007 Cisco Systems, Inc.  All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *	- Redistributions of source code must retain the above
15  *	  copyright notice, this list of conditions and the following
16  *	  disclaimer.
17  *
18  *	- Redistributions in binary form must reproduce the above
19  *	  copyright notice, this list of conditions and the following
20  *	  disclaimer in the documentation and/or other materials
21  *	  provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  */
32 
33 #ifndef MLX4_QP_H
34 #define MLX4_QP_H
35 
36 #include <linux/types.h>
37 #include <linux/if_ether.h>
38 
39 #include <linux/mlx4/device.h>
40 
41 #define MLX4_INVALID_LKEY	0x100
42 
43 enum mlx4_qp_optpar {
44 	MLX4_QP_OPTPAR_ALT_ADDR_PATH		= 1 << 0,
45 	MLX4_QP_OPTPAR_RRE			= 1 << 1,
46 	MLX4_QP_OPTPAR_RAE			= 1 << 2,
47 	MLX4_QP_OPTPAR_RWE			= 1 << 3,
48 	MLX4_QP_OPTPAR_PKEY_INDEX		= 1 << 4,
49 	MLX4_QP_OPTPAR_Q_KEY			= 1 << 5,
50 	MLX4_QP_OPTPAR_RNR_TIMEOUT		= 1 << 6,
51 	MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH	= 1 << 7,
52 	MLX4_QP_OPTPAR_SRA_MAX			= 1 << 8,
53 	MLX4_QP_OPTPAR_RRA_MAX			= 1 << 9,
54 	MLX4_QP_OPTPAR_PM_STATE			= 1 << 10,
55 	MLX4_QP_OPTPAR_RETRY_COUNT		= 1 << 12,
56 	MLX4_QP_OPTPAR_RNR_RETRY		= 1 << 13,
57 	MLX4_QP_OPTPAR_ACK_TIMEOUT		= 1 << 14,
58 	MLX4_QP_OPTPAR_SCHED_QUEUE		= 1 << 16,
59 	MLX4_QP_OPTPAR_COUNTER_INDEX		= 1 << 20,
60 	MLX4_QP_OPTPAR_VLAN_STRIPPING		= 1 << 21,
61 };
62 
63 enum mlx4_qp_state {
64 	MLX4_QP_STATE_RST			= 0,
65 	MLX4_QP_STATE_INIT			= 1,
66 	MLX4_QP_STATE_RTR			= 2,
67 	MLX4_QP_STATE_RTS			= 3,
68 	MLX4_QP_STATE_SQER			= 4,
69 	MLX4_QP_STATE_SQD			= 5,
70 	MLX4_QP_STATE_ERR			= 6,
71 	MLX4_QP_STATE_SQ_DRAINING		= 7,
72 	MLX4_QP_NUM_STATE
73 };
74 
75 enum {
76 	MLX4_QP_ST_RC				= 0x0,
77 	MLX4_QP_ST_UC				= 0x1,
78 	MLX4_QP_ST_RD				= 0x2,
79 	MLX4_QP_ST_UD				= 0x3,
80 	MLX4_QP_ST_XRC				= 0x6,
81 	MLX4_QP_ST_MLX				= 0x7
82 };
83 
84 enum {
85 	MLX4_QP_PM_MIGRATED			= 0x3,
86 	MLX4_QP_PM_ARMED			= 0x0,
87 	MLX4_QP_PM_REARM			= 0x1
88 };
89 
90 enum {
91 	/* params1 */
92 	MLX4_QP_BIT_SRE				= 1 << 15,
93 	MLX4_QP_BIT_SWE				= 1 << 14,
94 	MLX4_QP_BIT_SAE				= 1 << 13,
95 	/* params2 */
96 	MLX4_QP_BIT_RRE				= 1 << 15,
97 	MLX4_QP_BIT_RWE				= 1 << 14,
98 	MLX4_QP_BIT_RAE				= 1 << 13,
99 	MLX4_QP_BIT_FPP				= 1 <<	3,
100 	MLX4_QP_BIT_RIC				= 1 <<	4,
101 };
102 
103 enum {
104 	MLX4_RSS_HASH_XOR			= 0,
105 	MLX4_RSS_HASH_TOP			= 1,
106 
107 	MLX4_RSS_UDP_IPV6			= 1 << 0,
108 	MLX4_RSS_UDP_IPV4			= 1 << 1,
109 	MLX4_RSS_TCP_IPV6			= 1 << 2,
110 	MLX4_RSS_IPV6				= 1 << 3,
111 	MLX4_RSS_TCP_IPV4			= 1 << 4,
112 	MLX4_RSS_IPV4				= 1 << 5,
113 
114 	MLX4_RSS_BY_OUTER_HEADERS		= 0 << 6,
115 	MLX4_RSS_BY_INNER_HEADERS		= 2 << 6,
116 	MLX4_RSS_BY_INNER_HEADERS_IPONLY	= 3 << 6,
117 
118 	/* offset of mlx4_rss_context within mlx4_qp_context.pri_path */
119 	MLX4_RSS_OFFSET_IN_QPC_PRI_PATH		= 0x24,
120 	/* offset of being RSS indirection QP within mlx4_qp_context.flags */
121 	MLX4_RSS_QPC_FLAG_OFFSET		= 13,
122 };
123 
124 #define MLX4_EN_RSS_KEY_SIZE 40
125 
126 struct mlx4_rss_context {
127 	__be32			base_qpn;
128 	__be32			default_qpn;
129 	u16			reserved;
130 	u8			hash_fn;
131 	u8			flags;
132 	__be32			rss_key[MLX4_EN_RSS_KEY_SIZE / sizeof(__be32)];
133 	__be32			base_qpn_udp;
134 };
135 
136 struct mlx4_qp_path {
137 	u8			fl;
138 	union {
139 		u8			vlan_control;
140 		u8			control;
141 	};
142 	u8			disable_pkey_check;
143 	u8			pkey_index;
144 	u8			counter_index;
145 	u8			grh_mylmc;
146 	__be16			rlid;
147 	u8			ackto;
148 	u8			mgid_index;
149 	u8			static_rate;
150 	u8			hop_limit;
151 	__be32			tclass_flowlabel;
152 	u8			rgid[16];
153 	u8			sched_queue;
154 	u8			vlan_index;
155 	u8			feup;
156 	u8			fvl_rx;
157 	u8			reserved4[2];
158 	u8			dmac[ETH_ALEN];
159 };
160 
161 enum { /* fl */
162 	MLX4_FL_CV	= 1 << 6,
163 	MLX4_FL_ETH_HIDE_CQE_VLAN	= 1 << 2,
164 	MLX4_FL_ETH_SRC_CHECK_MC_LB	= 1 << 1,
165 	MLX4_FL_ETH_SRC_CHECK_UC_LB	= 1 << 0,
166 };
167 
168 enum { /* control */
169 	MLX4_CTRL_ETH_SRC_CHECK_IF_COUNTER	= 1 << 7,
170 };
171 
172 enum { /* vlan_control */
173 	MLX4_VLAN_CTRL_ETH_TX_BLOCK_TAGGED	= 1 << 6,
174 	MLX4_VLAN_CTRL_ETH_TX_BLOCK_PRIO_TAGGED	= 1 << 5, /* 802.1p priority tag */
175 	MLX4_VLAN_CTRL_ETH_TX_BLOCK_UNTAGGED	= 1 << 4,
176 	MLX4_VLAN_CTRL_ETH_RX_BLOCK_TAGGED	= 1 << 2,
177 	MLX4_VLAN_CTRL_ETH_RX_BLOCK_PRIO_TAGGED	= 1 << 1, /* 802.1p priority tag */
178 	MLX4_VLAN_CTRL_ETH_RX_BLOCK_UNTAGGED	= 1 << 0
179 };
180 
181 enum { /* feup */
182 	MLX4_FEUP_FORCE_ETH_UP          = 1 << 6, /* force Eth UP */
183 	MLX4_FSM_FORCE_ETH_SRC_MAC      = 1 << 5, /* force Source MAC */
184 	MLX4_FVL_FORCE_ETH_VLAN         = 1 << 3  /* force Eth vlan */
185 };
186 
187 enum { /* fvl_rx */
188 	MLX4_FVL_RX_FORCE_ETH_VLAN      = 1 << 0 /* enforce Eth rx vlan */
189 };
190 
191 struct mlx4_qp_context {
192 	__be32			flags;
193 	__be32			pd;
194 	u8			mtu_msgmax;
195 	u8			rq_size_stride;
196 	u8			sq_size_stride;
197 	u8			rlkey;
198 	__be32			usr_page;
199 	__be32			local_qpn;
200 	__be32			remote_qpn;
201 	struct			mlx4_qp_path pri_path;
202 	struct			mlx4_qp_path alt_path;
203 	__be32			params1;
204 	u32			reserved1;
205 	__be32			next_send_psn;
206 	__be32			cqn_send;
207 	u32			reserved2[2];
208 	__be32			last_acked_psn;
209 	__be32			ssn;
210 	__be32			params2;
211 	__be32			rnr_nextrecvpsn;
212 	__be32			xrcd;
213 	__be32			cqn_recv;
214 	__be64			db_rec_addr;
215 	__be32			qkey;
216 	__be32			srqn;
217 	__be32			msn;
218 	__be16			rq_wqe_counter;
219 	__be16			sq_wqe_counter;
220 	u32			reserved3;
221 	__be16			rate_limit_params;
222 	u8			reserved4;
223 	u8			qos_vport;
224 	__be32			param3;
225 	__be32			nummmcpeers_basemkey;
226 	u8			log_page_size;
227 	u8			reserved5[2];
228 	u8			mtt_base_addr_h;
229 	__be32			mtt_base_addr_l;
230 	u32			reserved6[10];
231 };
232 
233 struct mlx4_update_qp_context {
234 	__be64			qp_mask;
235 	__be64			primary_addr_path_mask;
236 	__be64			secondary_addr_path_mask;
237 	u64			reserved1;
238 	struct mlx4_qp_context	qp_context;
239 	u64			reserved2[58];
240 };
241 
242 enum {
243 	MLX4_UPD_QP_MASK_PM_STATE	= 32,
244 	MLX4_UPD_QP_MASK_VSD		= 33,
245 	MLX4_UPD_QP_MASK_QOS_VPP	= 34,
246 	MLX4_UPD_QP_MASK_RATE_LIMIT	= 35,
247 };
248 
249 enum {
250 	MLX4_UPD_QP_PATH_MASK_PKEY_INDEX		= 0 + 32,
251 	MLX4_UPD_QP_PATH_MASK_FSM			= 1 + 32,
252 	MLX4_UPD_QP_PATH_MASK_MAC_INDEX			= 2 + 32,
253 	MLX4_UPD_QP_PATH_MASK_FVL			= 3 + 32,
254 	MLX4_UPD_QP_PATH_MASK_CV			= 4 + 32,
255 	MLX4_UPD_QP_PATH_MASK_VLAN_INDEX		= 5 + 32,
256 	MLX4_UPD_QP_PATH_MASK_ETH_HIDE_CQE_VLAN		= 6 + 32,
257 	MLX4_UPD_QP_PATH_MASK_ETH_TX_BLOCK_UNTAGGED	= 7 + 32,
258 	MLX4_UPD_QP_PATH_MASK_ETH_TX_BLOCK_1P		= 8 + 32,
259 	MLX4_UPD_QP_PATH_MASK_ETH_TX_BLOCK_TAGGED	= 9 + 32,
260 	MLX4_UPD_QP_PATH_MASK_ETH_RX_BLOCK_UNTAGGED	= 10 + 32,
261 	MLX4_UPD_QP_PATH_MASK_ETH_RX_BLOCK_1P		= 11 + 32,
262 	MLX4_UPD_QP_PATH_MASK_ETH_RX_BLOCK_TAGGED	= 12 + 32,
263 	MLX4_UPD_QP_PATH_MASK_FEUP			= 13 + 32,
264 	MLX4_UPD_QP_PATH_MASK_SCHED_QUEUE		= 14 + 32,
265 	MLX4_UPD_QP_PATH_MASK_IF_COUNTER_INDEX		= 15 + 32,
266 	MLX4_UPD_QP_PATH_MASK_FVL_RX			= 16 + 32,
267 	MLX4_UPD_QP_PATH_MASK_ETH_SRC_CHECK_UC_LB	= 18 + 32,
268 	MLX4_UPD_QP_PATH_MASK_ETH_SRC_CHECK_MC_LB	= 19 + 32,
269 };
270 
271 enum { /* param3 */
272 	MLX4_STRIP_VLAN = 1 << 30
273 };
274 
275 /* Which firmware version adds support for NEC (NoErrorCompletion) bit */
276 #define MLX4_FW_VER_WQE_CTRL_NEC mlx4_fw_ver(2, 2, 232)
277 
278 enum {
279 	MLX4_WQE_CTRL_NEC		= 1 << 29,
280 	MLX4_WQE_CTRL_IIP		= 1 << 28,
281 	MLX4_WQE_CTRL_ILP		= 1 << 27,
282 	MLX4_WQE_CTRL_FENCE		= 1 << 6,
283 	MLX4_WQE_CTRL_CQ_UPDATE		= 3 << 2,
284 	MLX4_WQE_CTRL_SOLICITED		= 1 << 1,
285 	MLX4_WQE_CTRL_IP_CSUM		= 1 << 4,
286 	MLX4_WQE_CTRL_TCP_UDP_CSUM	= 1 << 5,
287 	MLX4_WQE_CTRL_INS_CVLAN		= 1 << 6,
288 	MLX4_WQE_CTRL_INS_SVLAN		= 1 << 7,
289 	MLX4_WQE_CTRL_STRONG_ORDER	= 1 << 7,
290 	MLX4_WQE_CTRL_FORCE_LOOPBACK	= 1 << 0,
291 };
292 
293 struct mlx4_wqe_ctrl_seg {
294 	__be32			owner_opcode;
295 	union {
296 		struct {
297 			__be16			vlan_tag;
298 			u8			ins_vlan;
299 			u8			fence_size;
300 		};
301 		__be32			bf_qpn;
302 	};
303 	/*
304 	 * High 24 bits are SRC remote buffer; low 8 bits are flags:
305 	 * [7]   SO (strong ordering)
306 	 * [5]   TCP/UDP checksum
307 	 * [4]   IP checksum
308 	 * [3:2] C (generate completion queue entry)
309 	 * [1]   SE (solicited event)
310 	 * [0]   FL (force loopback)
311 	 */
312 	union {
313 		__be32			srcrb_flags;
314 		__be16			srcrb_flags16[2];
315 	};
316 	/*
317 	 * imm is immediate data for send/RDMA write w/ immediate;
318 	 * also invalidation key for send with invalidate; input
319 	 * modifier for WQEs on CCQs.
320 	 */
321 	__be32			imm;
322 };
323 
324 enum {
325 	MLX4_WQE_MLX_VL15	= 1 << 17,
326 	MLX4_WQE_MLX_SLR	= 1 << 16
327 };
328 
329 struct mlx4_wqe_mlx_seg {
330 	u8			owner;
331 	u8			reserved1[2];
332 	u8			opcode;
333 	__be16			sched_prio;
334 	u8			reserved2;
335 	u8			size;
336 	/*
337 	 * [17]    VL15
338 	 * [16]    SLR
339 	 * [15:12] static rate
340 	 * [11:8]  SL
341 	 * [4]     ICRC
342 	 * [3:2]   C
343 	 * [0]     FL (force loopback)
344 	 */
345 	__be32			flags;
346 	__be16			rlid;
347 	u16			reserved3;
348 };
349 
350 struct mlx4_wqe_datagram_seg {
351 	__be32			av[8];
352 	__be32			dqpn;
353 	__be32			qkey;
354 	__be16			vlan;
355 	u8			mac[ETH_ALEN];
356 };
357 
358 struct mlx4_wqe_lso_seg {
359 	__be32			mss_hdr_size;
360 	__be32			header[0];
361 };
362 
363 enum mlx4_wqe_bind_seg_flags2 {
364 	MLX4_WQE_BIND_ZERO_BASED = (1 << 30),
365 	MLX4_WQE_BIND_TYPE_2     = (1 << 31),
366 };
367 
368 struct mlx4_wqe_bind_seg {
369 	__be32			flags1;
370 	__be32			flags2;
371 	__be32			new_rkey;
372 	__be32			lkey;
373 	__be64			addr;
374 	__be64			length;
375 };
376 
377 enum {
378 	MLX4_WQE_FMR_PERM_LOCAL_READ	= 1 << 27,
379 	MLX4_WQE_FMR_PERM_LOCAL_WRITE	= 1 << 28,
380 	MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_READ	= 1 << 29,
381 	MLX4_WQE_FMR_AND_BIND_PERM_REMOTE_WRITE	= 1 << 30,
382 	MLX4_WQE_FMR_AND_BIND_PERM_ATOMIC	= 1 << 31
383 };
384 
385 struct mlx4_wqe_fmr_seg {
386 	__be32			flags;
387 	__be32			mem_key;
388 	__be64			buf_list;
389 	__be64			start_addr;
390 	__be64			reg_len;
391 	__be32			offset;
392 	__be32			page_size;
393 	u32			reserved[2];
394 };
395 
396 struct mlx4_wqe_fmr_ext_seg {
397 	u8			flags;
398 	u8			reserved;
399 	__be16			app_mask;
400 	__be16			wire_app_tag;
401 	__be16			mem_app_tag;
402 	__be32			wire_ref_tag_base;
403 	__be32			mem_ref_tag_base;
404 };
405 
406 struct mlx4_wqe_local_inval_seg {
407 	u64			reserved1;
408 	__be32			mem_key;
409 	u32			reserved2;
410 	u64			reserved3[2];
411 };
412 
413 struct mlx4_wqe_raddr_seg {
414 	__be64			raddr;
415 	__be32			rkey;
416 	u32			reserved;
417 };
418 
419 struct mlx4_wqe_atomic_seg {
420 	__be64			swap_add;
421 	__be64			compare;
422 };
423 
424 struct mlx4_wqe_masked_atomic_seg {
425 	__be64			swap_add;
426 	__be64			compare;
427 	__be64			swap_add_mask;
428 	__be64			compare_mask;
429 };
430 
431 struct mlx4_wqe_data_seg {
432 	__be32			byte_count;
433 	__be32			lkey;
434 	__be64			addr;
435 };
436 
437 enum {
438 	MLX4_INLINE_ALIGN	= 64,
439 	MLX4_INLINE_SEG		= 1 << 31,
440 };
441 
442 struct mlx4_wqe_inline_seg {
443 	__be32			byte_count;
444 };
445 
446 enum mlx4_update_qp_attr {
447 	MLX4_UPDATE_QP_SMAC		= 1 << 0,
448 	MLX4_UPDATE_QP_VSD		= 1 << 1,
449 	MLX4_UPDATE_QP_RATE_LIMIT	= 1 << 2,
450 	MLX4_UPDATE_QP_QOS_VPORT	= 1 << 3,
451 	MLX4_UPDATE_QP_ETH_SRC_CHECK_MC_LB      = 1 << 4,
452 	MLX4_UPDATE_QP_SUPPORTED_ATTRS	= (1 << 5) - 1
453 };
454 
455 enum mlx4_update_qp_params_flags {
456 	MLX4_UPDATE_QP_PARAMS_FLAGS_ETH_CHECK_MC_LB     = 1 << 0,
457 	MLX4_UPDATE_QP_PARAMS_FLAGS_VSD_ENABLE		= 1 << 1,
458 };
459 
460 struct mlx4_update_qp_params {
461 	u8	smac_index;
462 	u8	qos_vport;
463 	u32	flags;
464 	u16	rate_unit;
465 	u16	rate_val;
466 };
467 
468 int mlx4_update_qp(struct mlx4_dev *dev, u32 qpn,
469 		   enum mlx4_update_qp_attr attr,
470 		   struct mlx4_update_qp_params *params);
471 int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
472 		   enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
473 		   struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar,
474 		   int sqd_event, struct mlx4_qp *qp);
475 
476 int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp,
477 		  struct mlx4_qp_context *context);
478 
479 int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
480 		     struct mlx4_qp_context *context,
481 		     struct mlx4_qp *qp, enum mlx4_qp_state *qp_state);
482 
__mlx4_qp_lookup(struct mlx4_dev * dev,u32 qpn)483 static inline struct mlx4_qp *__mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)
484 {
485 	return radix_tree_lookup(&dev->qp_table_tree, qpn & (dev->caps.num_qps - 1));
486 }
487 
488 void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp);
489 
490 #endif /* MLX4_QP_H */
491